diff --git a/camera/CameraBase.cpp b/camera/CameraBase.cpp
index 15d7715..68e73f2 100644
--- a/camera/CameraBase.cpp
+++ b/camera/CameraBase.cpp
@@ -20,6 +20,7 @@
 #include <utils/Log.h>
 #include <utils/threads.h>
 #include <utils/Mutex.h>
+#include <cutils/properties.h>
 
 #include <android/hardware/ICameraService.h>
 
@@ -90,6 +91,12 @@
 {
     Mutex::Autolock _l(gLock);
     if (gCameraService.get() == 0) {
+        char value[PROPERTY_VALUE_MAX];
+        property_get("config.disable_cameraservice", value, "0");
+        if (strncmp(value, "0", 2) != 0 && strncasecmp(value, "false", 6) != 0) {
+            return gCameraService;
+        }
+
         sp<IServiceManager> sm = defaultServiceManager();
         sp<IBinder> binder;
         do {
@@ -131,7 +138,7 @@
         c->mStatus = NO_ERROR;
     } else {
         ALOGW("An error occurred while connecting to camera %d: %s", cameraId,
-                (cs != nullptr) ? "Service not available" : ret.toString8().string());
+                (cs == nullptr) ? "Service not available" : ret.toString8().string());
         c.clear();
     }
     return c;
diff --git a/camera/CameraMetadata.cpp b/camera/CameraMetadata.cpp
index c78fc5d..373b94e 100644
--- a/camera/CameraMetadata.cpp
+++ b/camera/CameraMetadata.cpp
@@ -20,8 +20,9 @@
 #include <utils/Log.h>
 #include <utils/Errors.h>
 
-#include <camera/CameraMetadata.h>
 #include <binder/Parcel.h>
+#include <camera/CameraMetadata.h>
+#include <camera/VendorTagDescriptor.h>
 
 namespace android {
 
@@ -277,6 +278,18 @@
     return updateImpl(tag, (const void*)string.string(), string.size() + 1);
 }
 
+status_t CameraMetadata::update(const camera_metadata_ro_entry &entry) {
+    status_t res;
+    if (mLocked) {
+        ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+    if ( (res = checkType(entry.tag, entry.type)) != OK) {
+        return res;
+    }
+    return updateImpl(entry.tag, (const void*)entry.data.u8, entry.count);
+}
+
 status_t CameraMetadata::updateImpl(uint32_t tag, const void *data,
         size_t data_count) {
     status_t res;
@@ -681,4 +694,99 @@
     mBuffer = otherBuf;
 }
 
+status_t CameraMetadata::getTagFromName(const char *name,
+        const VendorTagDescriptor* vTags, uint32_t *tag) {
+
+    if (name == nullptr || tag == nullptr) return BAD_VALUE;
+
+    size_t nameLength = strlen(name);
+
+    const SortedVector<String8> *vendorSections;
+    size_t vendorSectionCount = 0;
+
+    if (vTags != NULL) {
+        vendorSections = vTags->getAllSectionNames();
+        vendorSectionCount = vendorSections->size();
+    }
+
+    // First, find the section by the longest string match
+    const char *section = NULL;
+    size_t sectionIndex = 0;
+    size_t sectionLength = 0;
+    size_t totalSectionCount = ANDROID_SECTION_COUNT + vendorSectionCount;
+    for (size_t i = 0; i < totalSectionCount; ++i) {
+
+        const char *str = (i < ANDROID_SECTION_COUNT) ? camera_metadata_section_names[i] :
+                (*vendorSections)[i - ANDROID_SECTION_COUNT].string();
+
+        ALOGV("%s: Trying to match against section '%s'", __FUNCTION__, str);
+
+        if (strstr(name, str) == name) { // name begins with the section name
+            size_t strLength = strlen(str);
+
+            ALOGV("%s: Name begins with section name", __FUNCTION__);
+
+            // section name is the longest we've found so far
+            if (section == NULL || sectionLength < strLength) {
+                section = str;
+                sectionIndex = i;
+                sectionLength = strLength;
+
+                ALOGV("%s: Found new best section (%s)", __FUNCTION__, section);
+            }
+        }
+    }
+
+    // TODO: Make above get_camera_metadata_section_from_name ?
+
+    if (section == NULL) {
+        return NAME_NOT_FOUND;
+    } else {
+        ALOGV("%s: Found matched section '%s' (%zu)",
+              __FUNCTION__, section, sectionIndex);
+    }
+
+    // Get the tag name component of the name
+    const char *nameTagName = name + sectionLength + 1; // x.y.z -> z
+    if (sectionLength + 1 >= nameLength) {
+        return BAD_VALUE;
+    }
+
+    // Match rest of name against the tag names in that section only
+    uint32_t candidateTag = 0;
+    if (sectionIndex < ANDROID_SECTION_COUNT) {
+        // Match built-in tags (typically android.*)
+        uint32_t tagBegin, tagEnd; // [tagBegin, tagEnd)
+        tagBegin = camera_metadata_section_bounds[sectionIndex][0];
+        tagEnd = camera_metadata_section_bounds[sectionIndex][1];
+
+        for (candidateTag = tagBegin; candidateTag < tagEnd; ++candidateTag) {
+            const char *tagName = get_camera_metadata_tag_name(candidateTag);
+
+            if (strcmp(nameTagName, tagName) == 0) {
+                ALOGV("%s: Found matched tag '%s' (%d)",
+                      __FUNCTION__, tagName, candidateTag);
+                break;
+            }
+        }
+
+        if (candidateTag == tagEnd) {
+            return NAME_NOT_FOUND;
+        }
+    } else if (vTags != NULL) {
+        // Match vendor tags (typically com.*)
+        const String8 sectionName(section);
+        const String8 tagName(nameTagName);
+
+        status_t res = OK;
+        if ((res = vTags->lookupTag(tagName, sectionName, &candidateTag)) != OK) {
+            return NAME_NOT_FOUND;
+        }
+    }
+
+    *tag = candidateTag;
+    return OK;
+}
+
+
 }; // namespace android
diff --git a/camera/VendorTagDescriptor.cpp b/camera/VendorTagDescriptor.cpp
index ca9cfd5..f3b3dbb 100644
--- a/camera/VendorTagDescriptor.cpp
+++ b/camera/VendorTagDescriptor.cpp
@@ -280,8 +280,8 @@
     return res;
 }
 
-SortedVector<String8> VendorTagDescriptor::getAllSectionNames() const {
-    return mSections;
+const SortedVector<String8>* VendorTagDescriptor::getAllSectionNames() const {
+    return &mSections;
 }
 
 status_t VendorTagDescriptor::lookupTag(const String8& name, const String8& section, /*out*/uint32_t* tag) const {
diff --git a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
index 1e8744b..96ecfa0 100644
--- a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
+++ b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
@@ -121,4 +121,6 @@
     void tearDown(int streamId);
 
     void prepare2(int maxCount, int streamId);
+
+    void setDeferredConfiguration(int streamId, in OutputConfiguration outputConfiguration);
 }
diff --git a/camera/camera2/CaptureRequest.cpp b/camera/camera2/CaptureRequest.cpp
index fb43708..0d689a6 100644
--- a/camera/camera2/CaptureRequest.cpp
+++ b/camera/camera2/CaptureRequest.cpp
@@ -37,7 +37,7 @@
     mMetadata.clear();
     mSurfaceList.clear();
 
-    status_t err;
+    status_t err = OK;
 
     if ((err = mMetadata.readFromParcel(parcel)) != OK) {
         ALOGE("%s: Failed to read metadata from parcel", __FUNCTION__);
@@ -65,19 +65,16 @@
         }
 
         // Surface.writeToParcel
-        const char16_t* name = parcel->readString16Inplace(&len);
-        ALOGV("%s: Read surface name = %s", __FUNCTION__,
-            name != NULL ? String8(name).string() : "<null>");
-        sp<IBinder> binder(parcel->readStrongBinder());
-        ALOGV("%s: Read surface binder = %p",
-              __FUNCTION__, binder.get());
+        view::Surface surfaceShim;
+        if ((err = surfaceShim.readFromParcel(parcel)) != OK) {
+            ALOGE("%s: Failed to read output target Surface %d from parcel: %s (%d)",
+                    __FUNCTION__, i, strerror(-err), err);
+            return err;
+        }
 
         sp<Surface> surface;
-
-        if (binder != NULL) {
-            sp<IGraphicBufferProducer> gbp =
-                    interface_cast<IGraphicBufferProducer>(binder);
-            surface = new Surface(gbp);
+        if (surfaceShim.graphicBufferProducer != NULL) {
+            surface = new Surface(surfaceShim.graphicBufferProducer);
         }
 
         mSurfaceList.push_back(surface);
@@ -99,7 +96,7 @@
         return BAD_VALUE;
     }
 
-    status_t err;
+    status_t err = OK;
 
     if ((err = mMetadata.writeToParcel(parcel)) != OK) {
         return err;
@@ -111,20 +108,18 @@
     parcel->writeInt32(size);
 
     for (int32_t i = 0; i < size; ++i) {
-        sp<Surface> surface = mSurfaceList[i];
-
-        sp<IBinder> binder;
-        if (surface != 0) {
-            binder = IInterface::asBinder(surface->getIGraphicBufferProducer());
-        }
-
         // not sure if readParcelableArray does this, hard to tell from source
         parcel->writeString16(String16("android.view.Surface"));
 
         // Surface.writeToParcel
-        parcel->writeString16(String16("unknown_name"));
-        // Surface.nativeWriteToParcel
-        parcel->writeStrongBinder(binder);
+        view::Surface surfaceShim;
+        surfaceShim.name = String16("unknown_name");
+        surfaceShim.graphicBufferProducer = mSurfaceList[i]->getIGraphicBufferProducer();
+        if ((err = surfaceShim.writeToParcel(parcel)) != OK) {
+            ALOGE("%s: Failed to write output target Surface %d to parcel: %s (%d)",
+                    __FUNCTION__, i, strerror(-err), err);
+            return err;
+        }
     }
 
     parcel->writeInt32(mIsReprocess ? 1 : 0);
diff --git a/camera/camera2/OutputConfiguration.cpp b/camera/camera2/OutputConfiguration.cpp
index 3247d0d..38e1c01 100644
--- a/camera/camera2/OutputConfiguration.cpp
+++ b/camera/camera2/OutputConfiguration.cpp
@@ -42,9 +42,24 @@
     return mSurfaceSetID;
 }
 
+int OutputConfiguration::getSurfaceType() const {
+    return mSurfaceType;
+}
+
+int OutputConfiguration::getWidth() const {
+    return mWidth;
+}
+
+int OutputConfiguration::getHeight() const {
+    return mHeight;
+}
+
 OutputConfiguration::OutputConfiguration() :
         mRotation(INVALID_ROTATION),
-        mSurfaceSetID(INVALID_SET_ID) {
+        mSurfaceSetID(INVALID_SET_ID),
+        mSurfaceType(SURFACE_TYPE_UNKNOWN),
+        mWidth(0),
+        mHeight(0) {
 }
 
 OutputConfiguration::OutputConfiguration(const Parcel& parcel) :
@@ -70,18 +85,48 @@
         return err;
     }
 
+    int surfaceType = SURFACE_TYPE_UNKNOWN;
+    if ((err = parcel->readInt32(&surfaceType)) != OK) {
+        ALOGE("%s: Failed to read surface type from parcel", __FUNCTION__);
+        return err;
+    }
+
+    int width = 0;
+    if ((err = parcel->readInt32(&width)) != OK) {
+        ALOGE("%s: Failed to read surface width from parcel", __FUNCTION__);
+        return err;
+    }
+
+    int height = 0;
+    if ((err = parcel->readInt32(&height)) != OK) {
+        ALOGE("%s: Failed to read surface height from parcel", __FUNCTION__);
+        return err;
+    }
+
     view::Surface surfaceShim;
     if ((err = surfaceShim.readFromParcel(parcel)) != OK) {
-        ALOGE("%s: Failed to read surface from parcel", __FUNCTION__);
-        return err;
+        // Read surface failure for deferred surface configuration is expected.
+        if (surfaceType == SURFACE_TYPE_SURFACE_VIEW ||
+                surfaceType == SURFACE_TYPE_SURFACE_TEXTURE) {
+            ALOGV("%s: Get null surface from a deferred surface configuration (%dx%d)",
+                    __FUNCTION__, width, height);
+            err = OK;
+        } else {
+            ALOGE("%s: Failed to read surface from parcel", __FUNCTION__);
+            return err;
+        }
     }
 
     mGbp = surfaceShim.graphicBufferProducer;
     mRotation = rotation;
     mSurfaceSetID = setID;
+    mSurfaceType = surfaceType;
+    mWidth = width;
+    mHeight = height;
 
-    ALOGV("%s: OutputConfiguration: bp = %p, name = %s, rotation = %d, setId = %d", __FUNCTION__,
-            mGbp.get(), String8(surfaceShim.name).string(), mRotation, mSurfaceSetID);
+    ALOGV("%s: OutputConfiguration: bp = %p, name = %s, rotation = %d, setId = %d,"
+            "surfaceType = %d", __FUNCTION__, mGbp.get(), String8(surfaceShim.name).string(),
+            mRotation, mSurfaceSetID, mSurfaceType);
 
     return err;
 }
@@ -104,6 +149,15 @@
     err = parcel->writeInt32(mSurfaceSetID);
     if (err != OK) return err;
 
+    err = parcel->writeInt32(mSurfaceType);
+    if (err != OK) return err;
+
+    err = parcel->writeInt32(mWidth);
+    if (err != OK) return err;
+
+    err = parcel->writeInt32(mHeight);
+    if (err != OK) return err;
+
     view::Surface surfaceShim;
     surfaceShim.name = String16("unknown_name"); // name of surface
     surfaceShim.graphicBufferProducer = mGbp;
diff --git a/camera/cameraserver/cameraserver.rc b/camera/cameraserver/cameraserver.rc
index 16d9da8..fea5a1d 100644
--- a/camera/cameraserver/cameraserver.rc
+++ b/camera/cameraserver/cameraserver.rc
@@ -1,6 +1,6 @@
 service cameraserver /system/bin/cameraserver
     class main
     user cameraserver
-    group audio camera drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct
+    group audio camera input drmrpc
     ioprio rt 4
-    writepid /dev/cpuset/foreground/tasks
+    writepid /dev/cpuset/camera-daemon/tasks /dev/stune/top-app/tasks
diff --git a/camera/ndk/Android.bp b/camera/ndk/Android.bp
index 6f2351f..c5fc646 100644
--- a/camera/ndk/Android.bp
+++ b/camera/ndk/Android.bp
@@ -20,4 +20,5 @@
     name: "libcamera2ndk.ndk",
     symbol_file: "libcamera2ndk.map.txt",
     first_version: "24",
+    unversioned_until: "current",
 }
diff --git a/camera/ndk/impl/ACameraManager.cpp b/camera/ndk/impl/ACameraManager.cpp
index 26d6679..35555ff 100644
--- a/camera/ndk/impl/ACameraManager.cpp
+++ b/camera/ndk/impl/ACameraManager.cpp
@@ -22,6 +22,7 @@
 #include "ACameraMetadata.h"
 #include "ACameraDevice.h"
 #include <utils/Vector.h>
+#include <cutils/properties.h>
 #include <stdlib.h>
 #include <camera/VendorTagDescriptor.h>
 
@@ -71,9 +72,19 @@
     mCameraService.clear();
 }
 
+static bool isCameraServiceDisabled() {
+    char value[PROPERTY_VALUE_MAX];
+    property_get("config.disable_cameraservice", value, "0");
+    return (strncmp(value, "0", 2) != 0 && strncasecmp(value, "false", 6) != 0);
+}
+
 sp<hardware::ICameraService> CameraManagerGlobal::getCameraService() {
     Mutex::Autolock _l(mLock);
     if (mCameraService.get() == nullptr) {
+        if (isCameraServiceDisabled()) {
+            return mCameraService;
+        }
+
         sp<IServiceManager> sm = defaultServiceManager();
         sp<IBinder> binder;
         do {
@@ -302,6 +313,13 @@
 camera_status_t
 ACameraManager::getOrCreateCameraIdListLocked(ACameraIdList** cameraIdList) {
     if (mCachedCameraIdList.numCameras == kCameraIdListNotInit) {
+        if (isCameraServiceDisabled()) {
+            mCachedCameraIdList.numCameras = 0;
+            mCachedCameraIdList.cameraIds = new const char*[0];
+            *cameraIdList = &mCachedCameraIdList;
+            return ACAMERA_OK;
+        }
+
         int numCameras = 0;
         Vector<char *> cameraIds;
         sp<hardware::ICameraService> cs = CameraManagerGlobal::getInstance().getCameraService();
diff --git a/cmds/screenrecord/screenrecord.cpp b/cmds/screenrecord/screenrecord.cpp
index 36a7e73..59d5661 100644
--- a/cmds/screenrecord/screenrecord.cpp
+++ b/cmds/screenrecord/screenrecord.cpp
@@ -80,7 +80,7 @@
 static uint32_t gTimeLimitSec = kMaxTimeLimitSec;
 
 // Set by signal handler to stop recording.
-static volatile bool gStopRequested;
+static volatile bool gStopRequested = false;
 
 // Previous signal handler state, restored after first hit.
 static struct sigaction gOrigSigactionINT;
@@ -334,9 +334,6 @@
         return err;
     }
 
-    // This is set by the signal handler.
-    gStopRequested = false;
-
     // Run until we're signaled.
     while (!gStopRequested) {
         size_t bufIndex, offset, size;
@@ -640,6 +637,11 @@
         case FORMAT_MP4: {
             // Configure muxer.  We have to wait for the CSD blob from the encoder
             // before we can start it.
+            err = unlink(fileName);
+            if (err != 0 && errno != ENOENT) {
+                fprintf(stderr, "ERROR: couldn't remove existing file\n");
+                abort();
+            }
             int fd = open(fileName, O_CREAT | O_LARGEFILE | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
             if (fd < 0) {
                 fprintf(stderr, "ERROR: couldn't open file\n");
@@ -718,7 +720,7 @@
     if (muxer != NULL) {
         // If we don't stop muxer explicitly, i.e. let the destructor run,
         // it may hang (b/11050628).
-        muxer->stop();
+        err = muxer->stop();
     } else if (rawFp != stdout) {
         fclose(rawFp);
     }
diff --git a/cmds/stagefright/SimplePlayer.h b/cmds/stagefright/SimplePlayer.h
index ae9dfd2..0d8c74a 100644
--- a/cmds/stagefright/SimplePlayer.h
+++ b/cmds/stagefright/SimplePlayer.h
@@ -22,7 +22,7 @@
 
 struct ABuffer;
 struct ALooper;
-struct AudioTrack;
+class AudioTrack;
 class IGraphicBufferProducer;
 struct MediaCodec;
 struct NuMediaExtractor;
diff --git a/drm/mediadrm/plugins/clearkey/DrmFactory.cpp b/drm/mediadrm/plugins/clearkey/DrmFactory.cpp
index 40275cf..d27956c 100644
--- a/drm/mediadrm/plugins/clearkey/DrmFactory.cpp
+++ b/drm/mediadrm/plugins/clearkey/DrmFactory.cpp
@@ -24,6 +24,7 @@
 
 #include "DrmPlugin.h"
 #include "ClearKeyUUID.h"
+#include "MimeType.h"
 #include "SessionLibrary.h"
 
 namespace clearkeydrm {
@@ -32,10 +33,14 @@
     return isClearKeyUUID(uuid);
 }
 
-bool DrmFactory::isContentTypeSupported(const android::String8 &initDataType) {
+bool DrmFactory::isContentTypeSupported(const android::String8 &type) {
     // This should match the types handed by InitDataParser.
-    return initDataType == "cenc" ||
-           initDataType == "webm";
+    return type == kIsoBmffVideoMimeType ||
+        type == kIsoBmffAudioMimeType ||
+        type == kCencInitDataFormat ||
+        type == kWebmVideoMimeType ||
+        type == kWebmAudioMimeType ||
+        type == kWebmInitDataFormat;
 }
 
 android::status_t DrmFactory::createDrmPlugin(
diff --git a/drm/mediadrm/plugins/clearkey/DrmFactory.h b/drm/mediadrm/plugins/clearkey/DrmFactory.h
index 164d3d0..87db982 100644
--- a/drm/mediadrm/plugins/clearkey/DrmFactory.h
+++ b/drm/mediadrm/plugins/clearkey/DrmFactory.h
@@ -32,7 +32,7 @@
 
     virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
 
-    virtual bool isContentTypeSupported(const android::String8 &initDataType);
+    virtual bool isContentTypeSupported(const android::String8 &mimeType);
 
     virtual android::status_t createDrmPlugin(
             const uint8_t uuid[16], android::DrmPlugin** plugin);
diff --git a/drm/mediadrm/plugins/clearkey/DrmPlugin.cpp b/drm/mediadrm/plugins/clearkey/DrmPlugin.cpp
index e5ee403..86bf047 100644
--- a/drm/mediadrm/plugins/clearkey/DrmPlugin.cpp
+++ b/drm/mediadrm/plugins/clearkey/DrmPlugin.cpp
@@ -46,7 +46,7 @@
 status_t DrmPlugin::getKeyRequest(
         const Vector<uint8_t>& scope,
         const Vector<uint8_t>& initData,
-        const String8& initDataType,
+        const String8& mimeType,
         KeyType keyType,
         const KeyedVector<String8, String8>& optionalParameters,
         Vector<uint8_t>& request,
@@ -62,7 +62,7 @@
     if (!session.get()) {
         return android::ERROR_DRM_SESSION_NOT_OPENED;
     }
-    return session->getKeyRequest(initData, initDataType, &request);
+    return session->getKeyRequest(initData, mimeType, &request);
 }
 
 status_t DrmPlugin::provideKeyResponse(
diff --git a/drm/mediadrm/plugins/clearkey/DrmPlugin.h b/drm/mediadrm/plugins/clearkey/DrmPlugin.h
index 820bda2..c4d934e 100644
--- a/drm/mediadrm/plugins/clearkey/DrmPlugin.h
+++ b/drm/mediadrm/plugins/clearkey/DrmPlugin.h
@@ -49,7 +49,7 @@
 
     virtual status_t getKeyRequest(
             const Vector<uint8_t>& scope,
-            const Vector<uint8_t>& initData,
+            const Vector<uint8_t>& mimeType,
             const String8& initDataType,
             KeyType keyType,
             const KeyedVector<String8, String8>& optionalParameters,
diff --git a/drm/mediadrm/plugins/clearkey/InitDataParser.cpp b/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
index c22d73a..0216b8d 100644
--- a/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
+++ b/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
@@ -27,6 +27,7 @@
 #include "InitDataParser.h"
 
 #include "ClearKeyUUID.h"
+#include "MimeType.h"
 #include "Utils.h"
 
 namespace clearkeydrm {
@@ -41,16 +42,20 @@
 }
 
 android::status_t InitDataParser::parse(const Vector<uint8_t>& initData,
-        const String8& initDataType,
+        const String8& type,
         Vector<uint8_t>* licenseRequest) {
     // Build a list of the key IDs
     Vector<const uint8_t*> keyIds;
-    if (initDataType == "cenc") {
+    if (type == kIsoBmffVideoMimeType ||
+        type == kIsoBmffAudioMimeType ||
+        type == kCencInitDataFormat) {
         android::status_t res = parsePssh(initData, &keyIds);
         if (res != android::OK) {
             return res;
         }
-    } else if (initDataType == "webm") {
+    } else if (type == kWebmVideoMimeType ||
+        type == kWebmAudioMimeType ||
+        type == kWebmInitDataFormat) {
         // WebM "init data" is just a single key ID
         if (initData.size() != kKeyIdSize) {
             return android::ERROR_DRM_CANNOT_HANDLE;
diff --git a/drm/mediadrm/plugins/clearkey/InitDataParser.h b/drm/mediadrm/plugins/clearkey/InitDataParser.h
index 9505d2a..a9707bf 100644
--- a/drm/mediadrm/plugins/clearkey/InitDataParser.h
+++ b/drm/mediadrm/plugins/clearkey/InitDataParser.h
@@ -29,7 +29,7 @@
     InitDataParser() {}
 
     android::status_t parse(const android::Vector<uint8_t>& initData,
-            const android::String8& initDataType,
+            const android::String8& type,
             android::Vector<uint8_t>* licenseRequest);
 
 private:
diff --git a/drm/mediadrm/plugins/clearkey/MimeType.h b/drm/mediadrm/plugins/clearkey/MimeType.h
new file mode 100644
index 0000000..085f17a
--- /dev/null
+++ b/drm/mediadrm/plugins/clearkey/MimeType.h
@@ -0,0 +1,15 @@
+#ifndef CLEARKEY_MIMETYPE_H_
+#define CLEARKEY_MIMETYPE_H_
+
+#include <utils/String8.h>
+
+namespace {
+    const android::String8 kCencInitDataFormat("cenc");
+    const android::String8 kIsoBmffAudioMimeType("audio/mp4");
+    const android::String8 kIsoBmffVideoMimeType("video/mp4");
+    const android::String8 kWebmInitDataFormat("webm");
+    const android::String8 kWebmAudioMimeType("audio/webm");
+    const android::String8 kWebmVideoMimeType("video/webm");
+}
+
+#endif // CLEARKEY_MIMETYPE_H_
diff --git a/drm/mediadrm/plugins/clearkey/Session.cpp b/drm/mediadrm/plugins/clearkey/Session.cpp
index 95016f5..d210f5e 100644
--- a/drm/mediadrm/plugins/clearkey/Session.cpp
+++ b/drm/mediadrm/plugins/clearkey/Session.cpp
@@ -36,10 +36,10 @@
 
 status_t Session::getKeyRequest(
         const Vector<uint8_t>& initData,
-        const String8& initDataType,
+        const String8& mimeType,
         Vector<uint8_t>* keyRequest) const {
     InitDataParser parser;
-    return parser.parse(initData, initDataType, keyRequest);
+    return parser.parse(initData, mimeType, keyRequest);
 }
 
 status_t Session::provideKeyResponse(const Vector<uint8_t>& response) {
diff --git a/drm/mediadrm/plugins/clearkey/Session.h b/drm/mediadrm/plugins/clearkey/Session.h
index cab0dc3..0933506 100644
--- a/drm/mediadrm/plugins/clearkey/Session.h
+++ b/drm/mediadrm/plugins/clearkey/Session.h
@@ -38,7 +38,7 @@
     const android::Vector<uint8_t>& sessionId() const { return mSessionId; }
 
     android::status_t getKeyRequest(
-            const android::Vector<uint8_t>& initData,
+            const android::Vector<uint8_t>& mimeType,
             const android::String8& initDataType,
             android::Vector<uint8_t>* keyRequest) const;
 
diff --git a/drm/mediadrm/plugins/clearkey/tests/InitDataParserUnittest.cpp b/drm/mediadrm/plugins/clearkey/tests/InitDataParserUnittest.cpp
index 4ba65ed..e275108 100644
--- a/drm/mediadrm/plugins/clearkey/tests/InitDataParserUnittest.cpp
+++ b/drm/mediadrm/plugins/clearkey/tests/InitDataParserUnittest.cpp
@@ -30,27 +30,27 @@
 
 namespace {
     const size_t kKeyIdSize = 16;
-    const String8 kCencType("cenc");
-    const String8 kWebMType("webm");
+    const String8 kCencMimeType("video/mp4");
+    const String8 kWebmMimeType("video/webm");
     const String8 kBase64Padding("=");
 }
 
 class InitDataParserTest : public ::testing::Test {
   protected:
     status_t attemptParse(const Vector<uint8_t>& initData,
-                          const String8& initDataType,
+                          const String8& mimeType,
                           Vector<uint8_t>* licenseRequest) {
         InitDataParser parser;
-        return parser.parse(initData, initDataType, licenseRequest);
+        return parser.parse(initData, mimeType, licenseRequest);
     }
 
     void attemptParseExpectingSuccess(const Vector<uint8_t>& initData,
-                                      const String8& initDataType,
+                                      const String8& mimeType,
                                       const Vector<String8>& expectedKeys) {
         const String8 kRequestPrefix("{\"kids\":[");
         const String8 kRequestSuffix("],\"type\":\"temporary\"}");
         Vector<uint8_t> request;
-        ASSERT_EQ(android::OK, attemptParse(initData, initDataType, &request));
+        ASSERT_EQ(android::OK, attemptParse(initData, mimeType, &request));
 
         String8 requestString(reinterpret_cast<const char*>(request.array()),
                               request.size());
@@ -68,9 +68,9 @@
     }
 
     void attemptParseExpectingFailure(const Vector<uint8_t>& initData,
-                                      const String8& initDataType) {
+                                      const String8& mimeType) {
         Vector<uint8_t> request;
-        ASSERT_NE(android::OK, attemptParse(initData, initDataType, &request));
+        ASSERT_NE(android::OK, attemptParse(initData, mimeType, &request));
         EXPECT_EQ(0, request.size());
     }
 };
@@ -93,7 +93,7 @@
     Vector<String8> expectedKeys;
     expectedKeys.push(String8("01234567890ABCDE"));
 
-    attemptParseExpectingSuccess(initData, kCencType, expectedKeys);
+    attemptParseExpectingSuccess(initData, kCencMimeType, expectedKeys);
 }
 
 TEST_F(InitDataParserTest, ParsesMultipleKeyPssh) {
@@ -120,7 +120,7 @@
     expectedKeys.push(String8("ClearKeyClearKey"));
     expectedKeys.push(String8(" GOOGLE  GOOGLE "));
 
-    attemptParseExpectingSuccess(initData, kCencType, expectedKeys);
+    attemptParseExpectingSuccess(initData, kCencMimeType, expectedKeys);
 }
 
 TEST_F(InitDataParserTest, ParsesWebM) {
@@ -134,7 +134,7 @@
     Vector<String8> expectedKeys;
     expectedKeys.push(String8("01234567890ABCDE"));
 
-    attemptParseExpectingSuccess(initData, kWebMType, expectedKeys);
+    attemptParseExpectingSuccess(initData, kWebmMimeType, expectedKeys);
 }
 
 TEST_F(InitDataParserTest, FailsForPsshTooSmall) {
@@ -147,7 +147,7 @@
     Vector<uint8_t> initData;
     initData.appendArray(pssh, 16);
 
-    attemptParseExpectingFailure(initData, kCencType);
+    attemptParseExpectingFailure(initData, kCencMimeType);
 }
 
 TEST_F(InitDataParserTest, FailsForWebMTooSmall) {
@@ -157,7 +157,7 @@
     Vector<uint8_t> initData;
     initData.appendArray(initDataRaw, 8);
 
-    attemptParseExpectingFailure(initData, kWebMType);
+    attemptParseExpectingFailure(initData, kWebmMimeType);
 }
 
 TEST_F(InitDataParserTest, FailsForPsshBadSystemId) {
@@ -175,7 +175,7 @@
     Vector<uint8_t> initData;
     initData.appendArray(pssh, 52);
 
-    attemptParseExpectingFailure(initData, kCencType);
+    attemptParseExpectingFailure(initData, kCencMimeType);
 }
 
 TEST_F(InitDataParserTest, FailsForPsshBadSize) {
@@ -193,7 +193,7 @@
     Vector<uint8_t> initData;
     initData.appendArray(pssh, 52);
 
-    attemptParseExpectingFailure(initData, kCencType);
+    attemptParseExpectingFailure(initData, kCencMimeType);
 }
 
 TEST_F(InitDataParserTest, FailsForPsshWrongVersion) {
@@ -211,7 +211,7 @@
     Vector<uint8_t> initData;
     initData.appendArray(pssh, 52);
 
-    attemptParseExpectingFailure(initData, kCencType);
+    attemptParseExpectingFailure(initData, kCencMimeType);
 }
 
 TEST_F(InitDataParserTest, FailsForPsshBadKeyCount) {
@@ -229,7 +229,7 @@
     Vector<uint8_t> initData;
     initData.appendArray(pssh, 52);
 
-    attemptParseExpectingFailure(initData, kCencType);
+    attemptParseExpectingFailure(initData, kCencMimeType);
 }
 
 }  // namespace clearkeydrm
diff --git a/include/camera/CameraMetadata.h b/include/camera/CameraMetadata.h
index 28f47a1..d284477 100644
--- a/include/camera/CameraMetadata.h
+++ b/include/camera/CameraMetadata.h
@@ -18,12 +18,15 @@
 #define ANDROID_CLIENT_CAMERA2_CAMERAMETADATA_CPP
 
 #include "system/camera_metadata.h"
+
 #include <utils/String8.h>
 #include <utils/Vector.h>
 #include <binder/Parcelable.h>
 
 namespace android {
 
+class VendorTagDescriptor;
+
 /**
  * A convenience wrapper around the C-based camera_metadata_t library.
  */
@@ -137,6 +140,8 @@
             const camera_metadata_rational_t *data, size_t data_count);
     status_t update(uint32_t tag,
             const String8 &string);
+    status_t update(const camera_metadata_ro_entry &entry);
+
 
     template<typename T>
     status_t update(uint32_t tag, Vector<T> data) {
@@ -206,6 +211,15 @@
     static status_t writeToParcel(Parcel &parcel,
                                   const camera_metadata_t* metadata);
 
+    /**
+     * Find tag id for a given tag name, also checking vendor tags if available.
+     * On success, returns OK and writes the tag id into tag.
+     *
+     * This is a slow method.
+     */
+    static status_t getTagFromName(const char *name,
+            const VendorTagDescriptor* vTags, uint32_t *tag);
+
   private:
     camera_metadata_t *mBuffer;
     mutable bool       mLocked;
diff --git a/include/camera/CameraParameters2.h b/include/camera/CameraParameters2.h
index 88ad812..f691cd6 100644
--- a/include/camera/CameraParameters2.h
+++ b/include/camera/CameraParameters2.h
@@ -151,7 +151,7 @@
         }
 
         ssize_t removeItem(const KeyT& key) {
-            size_t vectorIdx = (size_t) indexOfKey(key);
+            ssize_t vectorIdx = indexOfKey(key);
 
             if (vectorIdx < 0) {
                 return vectorIdx;
diff --git a/include/camera/VendorTagDescriptor.h b/include/camera/VendorTagDescriptor.h
index 06cad50..bfc8c96 100644
--- a/include/camera/VendorTagDescriptor.h
+++ b/include/camera/VendorTagDescriptor.h
@@ -81,8 +81,10 @@
         /**
          * Convenience method to get a vector containing all vendor tag
          * sections, or an empty vector if none are defined.
+         * The pointer is valid for the lifetime of the VendorTagDescriptor,
+         * or until readParcel or copyFrom is invoked.
          */
-        SortedVector<String8> getAllSectionNames() const;
+        const SortedVector<String8>* getAllSectionNames() const;
 
         /**
          * Lookup the tag id for a given tag name and section.
diff --git a/include/camera/camera2/OutputConfiguration.h b/include/camera/camera2/OutputConfiguration.h
index 72a3753..cf8f3c6 100644
--- a/include/camera/camera2/OutputConfiguration.h
+++ b/include/camera/camera2/OutputConfiguration.h
@@ -33,10 +33,17 @@
 
     static const int INVALID_ROTATION;
     static const int INVALID_SET_ID;
+    enum SurfaceType{
+        SURFACE_TYPE_UNKNOWN = -1,
+        SURFACE_TYPE_SURFACE_VIEW = 0,
+        SURFACE_TYPE_SURFACE_TEXTURE = 1
+    };
     sp<IGraphicBufferProducer> getGraphicBufferProducer() const;
     int                        getRotation() const;
     int                        getSurfaceSetID() const;
-
+    int                        getSurfaceType() const;
+    int                        getWidth() const;
+    int                        getHeight() const;
     /**
      * Keep impl up-to-date with OutputConfiguration.java in frameworks/base
      */
@@ -60,7 +67,10 @@
     bool operator == (const OutputConfiguration& other) const {
         return (mGbp == other.mGbp &&
                 mRotation == other.mRotation &&
-                mSurfaceSetID == other.mSurfaceSetID);
+                mSurfaceSetID == other.mSurfaceSetID &&
+                mSurfaceType == other.mSurfaceType &&
+                mWidth == other.mWidth &&
+                mHeight == other.mHeight);
     }
     bool operator != (const OutputConfiguration& other) const {
         return !(*this == other);
@@ -71,6 +81,16 @@
         if (mSurfaceSetID != other.mSurfaceSetID) {
             return mSurfaceSetID < other.mSurfaceSetID;
         }
+        if (mSurfaceType != other.mSurfaceType) {
+            return mSurfaceType < other.mSurfaceType;
+        }
+        if (mWidth != other.mWidth) {
+            return mWidth < other.mWidth;
+        }
+        if (mHeight != other.mHeight) {
+            return mHeight < other.mHeight;
+        }
+
         return mRotation < other.mRotation;
     }
     bool operator > (const OutputConfiguration& other) const {
@@ -81,6 +101,9 @@
     sp<IGraphicBufferProducer> mGbp;
     int                        mRotation;
     int                        mSurfaceSetID;
+    int                        mSurfaceType;
+    int                        mWidth;
+    int                        mHeight;
     // helper function
     static String16 readMaybeEmptyString16(const Parcel* parcel);
 };
diff --git a/include/media/AudioEffect.h b/include/media/AudioEffect.h
index 6af1962..7f6ccac 100644
--- a/include/media/AudioEffect.h
+++ b/include/media/AudioEffect.h
@@ -462,7 +462,7 @@
         }
 
         // IBinder::DeathRecipient
-        virtual void binderDied(const wp<IBinder>& who) {
+        virtual void binderDied(const wp<IBinder>& /*who*/) {
             sp<AudioEffect> effect = mEffect.promote();
             if (effect != 0) {
                 effect->binderDied();
diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index 2fa1a4e..63076e9 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -491,6 +491,9 @@
      */
             uint32_t    getInputFramesLost() const;
 
+    /* Get the flags */
+            audio_input_flags_t getFlags() const { AutoMutex _l(mLock); return mFlags; }
+
 private:
     /* copying audio record objects is not allowed */
                         AudioRecord(const AudioRecord& other);
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 2174b2f..d67ad44 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -200,6 +200,9 @@
                                              const char *device_address, const char *device_name);
     static audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
                                                                 const char *device_address);
+    static status_t handleDeviceConfigChange(audio_devices_t device,
+                                             const char *device_address,
+                                             const char *device_name);
     static status_t setPhoneState(audio_mode_t state);
     static status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
     static audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage);
diff --git a/include/media/ExtendedAudioBufferProvider.h b/include/media/ExtendedAudioBufferProvider.h
index 168ceed..51e4713 100644
--- a/include/media/ExtendedAudioBufferProvider.h
+++ b/include/media/ExtendedAudioBufferProvider.h
@@ -31,7 +31,7 @@
 
     // Invoked by buffer consumer when a new timestamp is available.
     // Default implementation ignores the timestamp.
-    virtual void    onTimestamp(const ExtendedTimestamp& timestamp) { }
+    virtual void    onTimestamp(const ExtendedTimestamp& /*timestamp*/) { }
 };
 
 }   // namespace android
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 984bc02..096f7ef 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -44,16 +44,6 @@
 public:
     DECLARE_META_INTERFACE(AudioFlinger);
 
-    // or-able bits shared by createTrack and openRecord, but not all combinations make sense
-    enum {
-        TRACK_DEFAULT = 0,  // client requests a default AudioTrack
-        // FIXME: obsolete
-        // TRACK_TIMED= 1,  // client requests a TimedAudioTrack
-        TRACK_FAST    = 2,  // client requests a fast AudioTrack or AudioRecord
-        TRACK_OFFLOAD = 4,  // client requests offload to hw codec
-        TRACK_DIRECT = 8,   // client requests a direct output
-    };
-    typedef uint32_t track_flags_t;
 
     // invariant on exit for all APIs that return an sp<>:
     //   (return value != 0) == (*status == NO_ERROR)
@@ -67,7 +57,7 @@
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
                                 size_t *pFrameCount,
-                                track_flags_t *flags,
+                                audio_output_flags_t *flags,
                                 const sp<IMemory>& sharedBuffer,
                                 // On successful return, AudioFlinger takes over the handle
                                 // reference and will release it when the track is destroyed.
@@ -89,7 +79,7 @@
                                 audio_channel_mask_t channelMask,
                                 const String16& callingPackage,
                                 size_t *pFrameCount,
-                                track_flags_t *flags,
+                                audio_input_flags_t *flags,
                                 pid_t pid,
                                 pid_t tid,  // -1 means unused, otherwise must be valid non-0
                                 int clientUid,
diff --git a/include/media/IAudioPolicyService.h b/include/media/IAudioPolicyService.h
index ef15a0c..f9dcbea 100644
--- a/include/media/IAudioPolicyService.h
+++ b/include/media/IAudioPolicyService.h
@@ -48,6 +48,9 @@
                                               const char *device_name) = 0;
     virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
                                                                   const char *device_address) = 0;
+    virtual status_t handleDeviceConfigChange(audio_devices_t device,
+                                              const char *device_address,
+                                              const char *device_name) = 0;
     virtual status_t setPhoneState(audio_mode_t state) = 0;
     virtual status_t setForceUse(audio_policy_force_use_t usage,
                                     audio_policy_forced_cfg_t config) = 0;
diff --git a/include/media/IDataSource.h b/include/media/IDataSource.h
index 838e29f..655f337 100644
--- a/include/media/IDataSource.h
+++ b/include/media/IDataSource.h
@@ -25,6 +25,7 @@
 namespace android {
 
 class IMemory;
+class DecryptHandle;
 
 // A binder interface for implementing a stagefright DataSource remotely.
 class IDataSource : public IInterface {
@@ -47,6 +48,8 @@
     virtual uint32_t getFlags() = 0;
     // get a description of the source, e.g. the url or filename it is based on
     virtual String8 toString() = 0;
+    // Initialize DRM and return a DecryptHandle.
+    virtual sp<DecryptHandle> DrmInitialization(const char *mime) = 0;
 
 private:
     DISALLOW_EVIL_CONSTRUCTORS(IDataSource);
diff --git a/include/media/IMediaPlayerService.h b/include/media/IMediaPlayerService.h
index 8266b0b..f21bb3a 100644
--- a/include/media/IMediaPlayerService.h
+++ b/include/media/IMediaPlayerService.h
@@ -32,7 +32,7 @@
 namespace android {
 
 struct IHDCP;
-struct IMediaCodecList;
+class IMediaCodecList;
 struct IMediaHTTPService;
 class IMediaRecorder;
 class IOMX;
diff --git a/include/media/IMediaSource.h b/include/media/IMediaSource.h
index 4056d54..2bde782 100644
--- a/include/media/IMediaSource.h
+++ b/include/media/IMediaSource.h
@@ -18,14 +18,17 @@
 
 #define IMEDIA_SOURCE_BASE_H_
 
+#include <map>
+
 #include <binder/IInterface.h>
+#include <binder/IMemory.h>
+#include <media/stagefright/MediaBuffer.h>
 #include <media/stagefright/MediaErrors.h>
 
 namespace android {
 
 struct MediaSource;
 class MetaData;
-class MediaBuffer;
 class MediaBufferGroup;
 
 class IMediaSource : public IInterface {
@@ -56,7 +59,7 @@
     // a) not request a seek
     // b) not be late, i.e. lateness_us = 0
     struct ReadOptions {
-        enum SeekMode {
+        enum SeekMode : int32_t {
             SEEK_PREVIOUS_SYNC,
             SEEK_NEXT_SYNC,
             SEEK_CLOSEST_SYNC,
@@ -72,6 +75,7 @@
         void clearSeekTo();
         bool getSeekTo(int64_t *time_us, SeekMode *mode) const;
 
+        // TODO: remove this if unused.
         void setLateBy(int64_t lateness_us);
         int64_t getLateBy() const;
 
@@ -79,6 +83,11 @@
         void clearNonBlocking();
         bool getNonBlocking() const;
 
+        // Used to clear all non-persistent options for multiple buffer reads.
+        void clearNonPersistent() {
+            clearSeekTo();
+        }
+
     private:
         enum Options {
             kSeekTo_Option      = 1,
@@ -98,21 +107,33 @@
     // A result of INFO_FORMAT_CHANGED indicates that the format of this
     // MediaSource has changed mid-stream, the client can continue reading
     // but should be prepared for buffers of the new configuration.
+    //
+    // TODO: consider removing read() in favor of readMultiple().
     virtual status_t read(
             MediaBuffer **buffer, const ReadOptions *options = NULL) = 0;
 
-    // Returns a vector of new buffers of data. The vector size could be
-    // <= |maxNumBuffers|. Used for buffers with small size
-    // since all buffer data are passed back by binder, not shared memory.
+    // Returns a vector of new buffers of data, where the new buffers are added
+    // to the end of the vector.
     // Call blocks until an error is encountered, or the end of the stream is
     // reached, or format change is hit, or |kMaxNumReadMultiple| buffers have
     // been read.
-    // End of stream is signalled by a result of ERROR_END_OF_STREAM.
+    // End of stream is signaled by a result of ERROR_END_OF_STREAM.
     // A result of INFO_FORMAT_CHANGED indicates that the format of this
     // MediaSource has changed mid-stream, the client can continue reading
     // but should be prepared for buffers of the new configuration.
+    //
+    // ReadOptions may be specified. Persistent options apply to all reads;
+    // non-persistent options (e.g. seek) apply only to the first read.
     virtual status_t readMultiple(
-            Vector<MediaBuffer *> *buffers, uint32_t maxNumBuffers = 1) = 0;
+            Vector<MediaBuffer *> *buffers, uint32_t maxNumBuffers = 1,
+            const ReadOptions *options = nullptr) = 0;
+
+    // Returns true if |readMultiple| is supported, otherwise false.
+    virtual bool supportReadMultiple() = 0;
+
+    // Returns true if |read| supports nonblocking option, otherwise false.
+    // |readMultiple| if supported, always allows the nonblocking option.
+    virtual bool supportNonblockingRead() = 0;
 
     // Causes this source to suspend pulling data from its upstream source
     // until a subsequent read-with-seek. Currently only supported by
@@ -144,17 +165,102 @@
         return ERROR_UNSUPPORTED;
     }
 
+    // TODO: Implement this for local media sources.
     virtual status_t readMultiple(
-            Vector<MediaBuffer *> * /* buffers */, uint32_t /* maxNumBuffers = 1 */) {
+            Vector<MediaBuffer *> * /* buffers */, uint32_t /* maxNumBuffers = 1 */,
+            const ReadOptions * /* options = nullptr */) {
         return ERROR_UNSUPPORTED;
     }
+
+    virtual bool supportReadMultiple() {
+        return false;
+    }
+
+    // Override in source if nonblocking reads are supported.
+    virtual bool supportNonblockingRead() {
+        return false;
+    }
+
+    static const size_t kBinderMediaBuffers = 4; // buffers managed by BnMediaSource
+    static const size_t kTransferSharedAsSharedThreshold = 4 * 1024;  // if >= shared, else inline
+    static const size_t kTransferInlineAsSharedThreshold = 64 * 1024; // if >= shared, else inline
+    static const size_t kInlineMaxTransfer = 256 * 1024; // Binder size limited to BINDER_VM_SIZE.
+
 protected:
     virtual ~BnMediaSource();
 
 private:
-    MediaBufferGroup *mGroup;
-};
+    uint32_t mBuffersSinceStop; // Buffer tracking variable
 
+    std::unique_ptr<MediaBufferGroup> mGroup;
+
+    // To prevent marshalling IMemory with each read transaction, we cache the IMemory pointer
+    // into a map.
+    //
+    // This is converted into an index, which is used to identify the associated memory
+    // on the receiving side.  We hold a reference to the IMemory here to ensure it doesn't
+    // change underneath us.
+
+    struct IndexCache {
+        IndexCache() : mIndex(0) { }
+
+        // Returns the index of the IMemory stored in cache or 0 if not found.
+        uint64_t lookup(const sp<IMemory> &mem) {
+            auto p = mMemoryToIndex.find(mem.get());
+            if (p == mMemoryToIndex.end()) {
+                return 0;
+            }
+            if (MediaBuffer::isDeadObject(p->second.first)) {
+                // this object's dead
+                ALOGW("Attempting to lookup a dead IMemory");
+                (void)mMemoryToIndex.erase(p);
+                return 0;
+            }
+            ALOGW_IF(p->second.first.get() != mem.get(), "Mismatched buffers without reset");
+            return p->second.second;
+        }
+
+        // Returns the index of the IMemory stored in the index cache.
+        uint64_t insert(const sp<IMemory> &mem) {
+            auto p = mMemoryToIndex.find(mem.get());
+            if (p == mMemoryToIndex.end()) {
+                if (mIndex == UINT64_MAX) {
+                    ALOGE("Index overflow");
+                    mIndex = 1; // skip overflow condition and hope for the best
+                } else {
+                    ++mIndex;
+                }
+                (void)mMemoryToIndex.emplace(// C++11 mem.get(), std::make_pair(mem, mIndex))
+                        std::piecewise_construct,
+                        std::forward_as_tuple(mem.get()), std::forward_as_tuple(mem, mIndex));
+                return mIndex;
+            }
+            ALOGW("IMemory already inserted into cache");
+            return p->second.second;
+        }
+
+        void reset() {
+            mMemoryToIndex.clear();
+            mIndex = 0;
+        }
+
+        void gc() {
+            for (auto it = mMemoryToIndex.begin(); it != mMemoryToIndex.end(); ) {
+                if (MediaBuffer::isDeadObject(it->second.first)) {
+                    it = mMemoryToIndex.erase(it);
+                } else {
+                    ++it;
+                }
+            }
+        }
+
+    private:
+        uint64_t mIndex;
+        // C++14 unordered_map erase on iterator is stable; C++11 has no guarantee.
+        // Could key on uintptr_t instead of IMemory *
+        std::map<IMemory *, std::pair<sp<IMemory>, uint64_t>> mMemoryToIndex;
+    } mIndexCache;
+};
 
 }  // namespace android
 
diff --git a/include/media/IOMX.h b/include/media/IOMX.h
index 15d691f..ffa6d6d 100644
--- a/include/media/IOMX.h
+++ b/include/media/IOMX.h
@@ -192,6 +192,7 @@
         INTERNAL_OPTION_START_TIME, // data is an int64_t
         INTERNAL_OPTION_TIME_LAPSE, // data is an int64_t[2]
         INTERNAL_OPTION_COLOR_ASPECTS, // data is ColorAspects
+        INTERNAL_OPTION_TIME_OFFSET, // data is an int64_t
     };
     virtual status_t setInternalOption(
             node_id node,
@@ -260,7 +261,7 @@
 
 protected:
     // check if the codec is secure.
-    virtual bool isSecure(IOMX::node_id node) {
+    virtual bool isSecure(IOMX::node_id /*node*/) {
         return false;
     }
 };
diff --git a/include/media/MediaCodecInfo.h b/include/media/MediaCodecInfo.h
index 48d0407..6b50f22 100644
--- a/include/media/MediaCodecInfo.h
+++ b/include/media/MediaCodecInfo.h
@@ -74,7 +74,7 @@
 
         DISALLOW_EVIL_CONSTRUCTORS(Capabilities);
 
-        friend class MediaCodecInfo;
+        friend struct MediaCodecInfo;
     };
 
     // Use a subclass to allow setting fields on construction without allowing
@@ -136,7 +136,7 @@
 
     DISALLOW_EVIL_CONSTRUCTORS(MediaCodecInfo);
 
-    friend class MediaCodecList;
+    friend struct MediaCodecList;
     friend class MediaCodecListOverridesTest;
 };
 
diff --git a/include/media/MediaMetadataRetrieverInterface.h b/include/media/MediaMetadataRetrieverInterface.h
index bce6ee3..a5e1350 100644
--- a/include/media/MediaMetadataRetrieverInterface.h
+++ b/include/media/MediaMetadataRetrieverInterface.h
@@ -54,9 +54,9 @@
     MediaMetadataRetrieverInterface() {}
 
     virtual             ~MediaMetadataRetrieverInterface() {}
-    virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) { return NULL; }
+    virtual VideoFrame* getFrameAtTime(int64_t /*timeUs*/, int /*option*/) { return NULL; }
     virtual MediaAlbumArt* extractAlbumArt() { return NULL; }
-    virtual const char* extractMetadata(int keyCode) { return NULL; }
+    virtual const char* extractMetadata(int /*keyCode*/) { return NULL; }
 };
 
 }; // namespace android
diff --git a/include/media/MediaRecorderBase.h b/include/media/MediaRecorderBase.h
index 5195993..42151ea 100644
--- a/include/media/MediaRecorderBase.h
+++ b/include/media/MediaRecorderBase.h
@@ -46,7 +46,7 @@
                                const sp<ICameraRecordingProxy>& proxy) = 0;
     virtual status_t setPreviewSurface(const sp<IGraphicBufferProducer>& surface) = 0;
     virtual status_t setOutputFile(int fd, int64_t offset, int64_t length) = 0;
-    virtual status_t setOutputFileAuxiliary(int fd) {return INVALID_OPERATION;}
+    virtual status_t setOutputFileAuxiliary(int /*fd*/) {return INVALID_OPERATION;}
     virtual status_t setParameters(const String8& params) = 0;
     virtual status_t setListener(const sp<IMediaRecorderClient>& listener) = 0;
     virtual status_t setClientName(const String16& clientName) = 0;
diff --git a/include/media/ToneGenerator.h b/include/media/ToneGenerator.h
index 7b706b6..9fd5f61 100644
--- a/include/media/ToneGenerator.h
+++ b/include/media/ToneGenerator.h
@@ -193,15 +193,21 @@
         TONE_JAPAN_DIAL,            // Dial tone: 400Hz, continuous
         TONE_JAPAN_BUSY,            // Busy tone: 400Hz, 500ms ON, 500ms OFF...
         TONE_JAPAN_RADIO_ACK,       // Radio path acknowlegment: 400Hz, 1s ON, 2s OFF...
-        // UK Supervisory tones
-        TONE_UK_RINGTONE,           // Ring Tone: A 400Hz + 450Hz tone repeated in a 0.4s on, 0.2s off, 0.4s on, 2.0s off pattern.
+        // GB Supervisory tones
+        TONE_GB_RINGTONE,           // Ring Tone: A 400Hz + 450Hz tone repeated in a 0.4s on, 0.2s off, 0.4s on, 2.0s off pattern.
+        // AUSTRALIA Supervisory tones
+        TONE_AUSTRALIA_RINGTONE,    // Ring tone: A 400Hz + 450Hz tone repeated in a 0.4s on, 0.2s off, 0.4s on, 2.0s off pattern.
+        TONE_AUSTRALIA_BUSY,        // Busy tone: 425 Hz repeated in a 0.375s on, 0.375s off pattern.
+        TONE_AUSTRALIA_CALL_WAITING,// Call waiting tone: 425Hz tone repeated in a 0.2s on, 0.2s off, 0.2s on, 4.4s off pattern.
+        TONE_AUSTRALIA_CONGESTION,  // Congestion tone: 425Hz tone repeated in a 0.375s on, 0.375s off pattern
         NUM_ALTERNATE_TONES
     };
 
     enum region {
         ANSI,
         JAPAN,
-        UK,
+        GB,
+        AUSTRALIA,
         CEPT,
         NUM_REGIONS
     };
diff --git a/include/media/Visualizer.h b/include/media/Visualizer.h
index ec0dad5..7bb9e8b 100644
--- a/include/media/Visualizer.h
+++ b/include/media/Visualizer.h
@@ -95,8 +95,7 @@
 
     // install a callback to receive periodic captures. The capture rate is specified in milliHertz
     // and the capture format is according to flags  (see callback_flags).
-    status_t setCaptureCallBack(capture_cbk_t cbk, void* user, uint32_t flags, uint32_t rate,
-                                bool force = false);
+    status_t setCaptureCallBack(capture_cbk_t cbk, void* user, uint32_t flags, uint32_t rate);
 
     // set the capture size capture size must be a power of two in the range
     // [VISUALIZER_CAPTURE_SIZE_MAX. VISUALIZER_CAPTURE_SIZE_MIN]
diff --git a/include/media/nbaio/NBAIO.h b/include/media/nbaio/NBAIO.h
index 120de4f..212f8e8 100644
--- a/include/media/nbaio/NBAIO.h
+++ b/include/media/nbaio/NBAIO.h
@@ -212,7 +212,7 @@
     // Returns NO_ERROR if a timestamp is available.  The timestamp includes the total number
     // of frames presented to an external observer, together with the value of CLOCK_MONOTONIC
     // as of this presentation count.  The timestamp parameter is undefined if error is returned.
-    virtual status_t getTimestamp(ExtendedTimestamp &timestamp) { return INVALID_OPERATION; }
+    virtual status_t getTimestamp(ExtendedTimestamp& /*timestamp*/) { return INVALID_OPERATION; }
 
 protected:
     NBAIO_Sink(const NBAIO_Format& format = Format_Invalid) : NBAIO_Port(format), mFramesWritten(0)
@@ -299,7 +299,7 @@
 
     // Invoked asynchronously by corresponding sink when a new timestamp is available.
     // Default implementation ignores the timestamp.
-    virtual void    onTimestamp(const ExtendedTimestamp& timestamp) { }
+    virtual void    onTimestamp(const ExtendedTimestamp& /*timestamp*/) { }
 
 protected:
     NBAIO_Source(const NBAIO_Format& format = Format_Invalid) : NBAIO_Port(format), mFramesRead(0)
diff --git a/include/media/stagefright/ACodec.h b/include/media/stagefright/ACodec.h
index c41d0f0..b59319c 100644
--- a/include/media/stagefright/ACodec.h
+++ b/include/media/stagefright/ACodec.h
@@ -35,7 +35,7 @@
 namespace android {
 
 struct ABuffer;
-struct MemoryDealer;
+class MemoryDealer;
 struct DescribeColorFormat2Params;
 struct DataConverter;
 
@@ -315,11 +315,12 @@
 
     status_t handleSetSurface(const sp<Surface> &surface);
     status_t setupNativeWindowSizeFormatAndUsage(
-            ANativeWindow *nativeWindow /* nonnull */, int *finalUsage /* nonnull */);
+            ANativeWindow *nativeWindow /* nonnull */, int *finalUsage /* nonnull */,
+            bool reconnect);
 
     status_t configureOutputBuffersFromNativeWindow(
             OMX_U32 *nBufferCount, OMX_U32 *nBufferSize,
-            OMX_U32 *nMinUndequeuedBuffers);
+            OMX_U32 *nMinUndequeuedBuffers, bool preregister);
     status_t allocateOutputMetadataBuffers();
     status_t submitOutputMetadataBuffer();
     void signalSubmitOutputMetadataBufferIfEOS_workaround();
@@ -371,6 +372,10 @@
             int32_t width, int32_t height,
             OMX_VIDEO_CODINGTYPE compressionFormat, float frameRate = -1.0);
 
+    // sets |portIndex| port buffer numbers to be |bufferNum|. NOTE: Component could reject
+    // this setting if the |bufferNum| is less than the minimum buffer num of the port.
+    status_t setPortBufferNum(OMX_U32 portIndex, int bufferNum);
+
     // gets index or sets it to 0 on error. Returns error from codec.
     status_t initDescribeColorAspectsIndex();
 
@@ -480,13 +485,19 @@
     status_t getIntraRefreshPeriod(uint32_t *intraRefreshPeriod);
     status_t setIntraRefreshPeriod(uint32_t intraRefreshPeriod, bool inConfigure);
 
+    // Configures temporal layering based on |msg|. |inConfigure| shall be true iff this is called
+    // during configure() call. on success the configured layering is set in |outputFormat|. If
+    // |outputFormat| is mOutputFormat, it is copied to trigger an output format changed event.
+    status_t configureTemporalLayers(
+            const sp<AMessage> &msg, bool inConfigure, sp<AMessage> &outputFormat);
+
     status_t setMinBufferSize(OMX_U32 portIndex, size_t size);
 
     status_t setupMPEG4EncoderParameters(const sp<AMessage> &msg);
     status_t setupH263EncoderParameters(const sp<AMessage> &msg);
     status_t setupAVCEncoderParameters(const sp<AMessage> &msg);
     status_t setupHEVCEncoderParameters(const sp<AMessage> &msg);
-    status_t setupVPXEncoderParameters(const sp<AMessage> &msg);
+    status_t setupVPXEncoderParameters(const sp<AMessage> &msg, sp<AMessage> &outputFormat);
 
     status_t verifySupportForProfileAndLevel(int32_t profile, int32_t level);
 
diff --git a/include/media/stagefright/CameraSource.h b/include/media/stagefright/CameraSource.h
index c2e75a6..c604f2d 100644
--- a/include/media/stagefright/CameraSource.h
+++ b/include/media/stagefright/CameraSource.h
@@ -216,10 +216,10 @@
 
     // Returns true if need to skip the current frame.
     // Called from dataCallbackTimestamp.
-    virtual bool skipCurrentFrame(int64_t timestampUs) {return false;}
+    virtual bool skipCurrentFrame(int64_t /*timestampUs*/) {return false;}
 
     // Callback called when still camera raw data is available.
-    virtual void dataCallback(int32_t msgType, const sp<IMemory> &data) {}
+    virtual void dataCallback(int32_t /*msgType*/, const sp<IMemory>& /*data*/) {}
 
     virtual void dataCallbackTimestamp(int64_t timestampUs, int32_t msgType,
             const sp<IMemory> &data);
diff --git a/include/media/stagefright/CodecBase.h b/include/media/stagefright/CodecBase.h
index be2835d..e057075 100644
--- a/include/media/stagefright/CodecBase.h
+++ b/include/media/stagefright/CodecBase.h
@@ -73,10 +73,10 @@
     virtual void onMessageReceived(const sp<AMessage> &msg) = 0;
 
     virtual status_t queryCapabilities(
-            const AString &name, const AString &mime, bool isEncoder,
-            sp<MediaCodecInfo::Capabilities> *caps /* nonnull */) { return INVALID_OPERATION; }
+            const AString& /*name*/, const AString& /*mime*/, bool /*isEncoder*/,
+            sp<MediaCodecInfo::Capabilities>* /*caps*/ /* nonnull */) { return INVALID_OPERATION; }
 
-    virtual status_t setSurface(const sp<Surface> &surface) { return INVALID_OPERATION; }
+    virtual status_t setSurface(const sp<Surface>& /*surface*/) { return INVALID_OPERATION; }
 
     virtual void signalFlush() = 0;
     virtual void signalResume() = 0;
@@ -89,8 +89,8 @@
         virtual size_t countBuffers() = 0;
         virtual IOMX::buffer_id bufferIDAt(size_t index) const = 0;
         virtual sp<ABuffer> bufferAt(size_t index) const = 0;
-        virtual sp<NativeHandle> handleAt(size_t index) const { return NULL; };
-        virtual sp<RefBase> memRefAt(size_t index) const { return NULL; }
+        virtual sp<NativeHandle> handleAt(size_t /*index*/) const { return NULL; };
+        virtual sp<RefBase> memRefAt(size_t /*index*/) const { return NULL; }
 
     protected:
         PortDescription();
diff --git a/include/media/stagefright/ColorConverter.h b/include/media/stagefright/ColorConverter.h
index 85ba920..270c809 100644
--- a/include/media/stagefright/ColorConverter.h
+++ b/include/media/stagefright/ColorConverter.h
@@ -70,6 +70,9 @@
     status_t convertYUV420Planar(
             const BitmapParams &src, const BitmapParams &dst);
 
+    status_t convertYUV420PlanarUseLibYUV(
+            const BitmapParams &src, const BitmapParams &dst);
+
     status_t convertQCOMYUV420SemiPlanar(
             const BitmapParams &src, const BitmapParams &dst);
 
diff --git a/include/media/stagefright/DataSource.h b/include/media/stagefright/DataSource.h
index 0254545..052b9b7 100644
--- a/include/media/stagefright/DataSource.h
+++ b/include/media/stagefright/DataSource.h
@@ -96,7 +96,7 @@
         return String8("<unspecified>");
     }
 
-    virtual status_t reconnectAtOffset(off64_t offset) {
+    virtual status_t reconnectAtOffset(off64_t /*offset*/) {
         return ERROR_UNSUPPORTED;
     }
 
@@ -114,10 +114,10 @@
     static void RegisterDefaultSniffers();
 
     // for DRM
-    virtual sp<DecryptHandle> DrmInitialization(const char *mime = NULL) {
+    virtual sp<DecryptHandle> DrmInitialization(const char * /*mime*/ = NULL) {
         return NULL;
     }
-    virtual void getDrmInfo(sp<DecryptHandle> &handle, DrmManagerClient **client) {};
+    virtual void getDrmInfo(sp<DecryptHandle> &/*handle*/, DrmManagerClient ** /*client*/) {};
 
     virtual String8 getUri() {
         return String8();
diff --git a/include/media/stagefright/FrameRenderTracker.h b/include/media/stagefright/FrameRenderTracker.h
index 8396657..327d260 100644
--- a/include/media/stagefright/FrameRenderTracker.h
+++ b/include/media/stagefright/FrameRenderTracker.h
@@ -82,7 +82,7 @@
         sp<GraphicBuffer> mGraphicBuffer;
         sp<Fence> mFence;
 
-        friend class FrameRenderTracker;
+        friend struct FrameRenderTracker;
     };
 
     FrameRenderTracker();
diff --git a/include/media/stagefright/MPEG4Writer.h b/include/media/stagefright/MPEG4Writer.h
index a6901a8..a8ba095 100644
--- a/include/media/stagefright/MPEG4Writer.h
+++ b/include/media/stagefright/MPEG4Writer.h
@@ -27,7 +27,7 @@
 
 namespace android {
 
-class AMessage;
+struct AMessage;
 class MediaBuffer;
 class MetaData;
 
@@ -65,6 +65,7 @@
 
     status_t setGeoData(int latitudex10000, int longitudex10000);
     status_t setCaptureRate(float captureFps);
+    status_t setTemporalLayerCount(uint32_t layerCount);
     virtual void setStartTimeOffsetMs(int ms) { mStartTimeOffsetMs = ms; }
     virtual int32_t getStartTimeOffsetMs() const { return mStartTimeOffsetMs; }
 
@@ -187,6 +188,7 @@
     // Acquire lock before calling these methods
     off64_t addSample_l(MediaBuffer *buffer);
     off64_t addLengthPrefixedSample_l(MediaBuffer *buffer);
+    off64_t addMultipleLengthPrefixedSamples_l(MediaBuffer *buffer);
 
     bool exceedsFileSizeLimit();
     bool use32BitFileOffset() const;
diff --git a/include/media/stagefright/MediaBuffer.h b/include/media/stagefright/MediaBuffer.h
index 4baa68c..2c0ebe7 100644
--- a/include/media/stagefright/MediaBuffer.h
+++ b/include/media/stagefright/MediaBuffer.h
@@ -18,6 +18,8 @@
 
 #define MEDIA_BUFFER_H_
 
+#include <atomic>
+#include <list>
 #include <media/stagefright/foundation/MediaBufferBase.h>
 
 #include <pthread.h>
@@ -60,11 +62,22 @@
 
     explicit MediaBuffer(const sp<ABuffer> &buffer);
 
-    // Decrements the reference count and returns the buffer to its
-    // associated MediaBufferGroup if the reference count drops to 0.
+    MediaBuffer(const sp<IMemory> &mem) :
+        MediaBuffer((uint8_t *)mem->pointer() + sizeof(SharedControl), mem->size()) {
+        // delegate and override mMemory
+        mMemory = mem;
+    }
+
+    // If MediaBufferGroup is set, decrement the local reference count;
+    // if the local reference count drops to 0, return the buffer to the
+    // associated MediaBufferGroup.
+    //
+    // If no MediaBufferGroup is set, the local reference count must be zero
+    // when called, whereupon the MediaBuffer is deleted.
     virtual void release();
 
-    // Increments the reference count.
+    // Increments the local reference count.
+    // Use only when MediaBufferGroup is set.
     virtual void add_ref();
 
     void *data() const;
@@ -89,11 +102,56 @@
     // MetaData.
     MediaBuffer *clone();
 
-    int refcount() const;
+    // sum of localRefcount() and remoteRefcount()
+    int refcount() const {
+        return localRefcount() + remoteRefcount();
+    }
+
+    int localRefcount() const {
+        return mRefCount;
+    }
+
+    int remoteRefcount() const {
+        if (mMemory.get() == nullptr || mMemory->pointer() == nullptr) return 0;
+        int32_t remoteRefcount =
+                reinterpret_cast<SharedControl *>(mMemory->pointer())->getRemoteRefcount();
+        // Sanity check so that remoteRefCount() is non-negative.
+        return remoteRefcount >= 0 ? remoteRefcount : 0; // do not allow corrupted data.
+    }
+
+    // returns old value
+    int addRemoteRefcount(int32_t value) {
+        if (mMemory.get() == nullptr || mMemory->pointer() == nullptr) return 0;
+        return reinterpret_cast<SharedControl *>(mMemory->pointer())->addRemoteRefcount(value);
+    }
+
+    bool isDeadObject() const {
+        return isDeadObject(mMemory);
+    }
+
+    static bool isDeadObject(const sp<IMemory> &memory) {
+        if (memory.get() == nullptr || memory->pointer() == nullptr) return false;
+        return reinterpret_cast<SharedControl *>(memory->pointer())->isDeadObject();
+    }
+
+    // Sticky on enabling of shared memory MediaBuffers. By default we don't use
+    // shared memory for MediaBuffers, but we enable this for those processes
+    // that export MediaBuffers.
+    static void useSharedMemory() {
+        std::atomic_store_explicit(
+                &mUseSharedMemory, (int_least32_t)1, std::memory_order_seq_cst);
+    }
 
 protected:
+    // true if MediaBuffer is observed (part of a MediaBufferGroup).
+    inline bool isObserved() const {
+        return mObserver != nullptr;
+    }
+
     virtual ~MediaBuffer();
 
+    sp<IMemory> mMemory;
+
 private:
     friend class MediaBufferGroup;
     friend class OMXDecoder;
@@ -105,7 +163,6 @@
     void claim();
 
     MediaBufferObserver *mObserver;
-    MediaBuffer *mNextBuffer;
     int mRefCount;
 
     void *mData;
@@ -119,12 +176,59 @@
 
     MediaBuffer *mOriginal;
 
-    void setNextBuffer(MediaBuffer *buffer);
-    MediaBuffer *nextBuffer();
+    static std::atomic_int_least32_t mUseSharedMemory;
 
     MediaBuffer(const MediaBuffer &);
     MediaBuffer &operator=(const MediaBuffer &);
-    sp<IMemory> mMemory;
+
+    // SharedControl block at the start of IMemory.
+    struct SharedControl {
+        enum {
+            FLAG_DEAD_OBJECT = (1 << 0),
+        };
+
+        // returns old value
+        inline int32_t addRemoteRefcount(int32_t value) {
+            return std::atomic_fetch_add_explicit(
+                    &mRemoteRefcount, (int_least32_t)value, std::memory_order_seq_cst);
+        }
+
+        inline int32_t getRemoteRefcount() const {
+            return std::atomic_load_explicit(&mRemoteRefcount, std::memory_order_seq_cst);
+        }
+
+        inline void setRemoteRefcount(int32_t value) {
+            std::atomic_store_explicit(
+                    &mRemoteRefcount, (int_least32_t)value, std::memory_order_seq_cst);
+        }
+
+        inline bool isDeadObject() const {
+            return (std::atomic_load_explicit(
+                    &mFlags, std::memory_order_seq_cst) & FLAG_DEAD_OBJECT) != 0;
+        }
+
+        inline void setDeadObject() {
+            (void)std::atomic_fetch_or_explicit(
+                    &mFlags, (int_least32_t)FLAG_DEAD_OBJECT, std::memory_order_seq_cst);
+        }
+
+        inline void clear() {
+            std::atomic_store_explicit(
+                    &mFlags, (int_least32_t)0, std::memory_order_seq_cst);
+            std::atomic_store_explicit(
+                    &mRemoteRefcount, (int_least32_t)0, std::memory_order_seq_cst);
+        }
+
+    private:
+        // Caution: atomic_int_fast32_t is 64 bits on LP64.
+        std::atomic_int_least32_t mFlags;
+        std::atomic_int_least32_t mRemoteRefcount;
+        int32_t unused[6]; // additional buffer space
+    };
+
+    inline SharedControl *getSharedControl() const {
+         return reinterpret_cast<SharedControl *>(mMemory->pointer());
+     }
 };
 
 }  // namespace android
diff --git a/include/media/stagefright/MediaBufferGroup.h b/include/media/stagefright/MediaBufferGroup.h
index 7ca3fa1..3051406 100644
--- a/include/media/stagefright/MediaBufferGroup.h
+++ b/include/media/stagefright/MediaBufferGroup.h
@@ -29,11 +29,17 @@
 
 class MediaBufferGroup : public MediaBufferObserver {
 public:
-    MediaBufferGroup();
+    MediaBufferGroup(size_t growthLimit = 0);
+
+    // create a media buffer group with preallocated buffers
+    MediaBufferGroup(size_t buffers, size_t buffer_size, size_t growthLimit = 0);
+
     ~MediaBufferGroup();
 
     void add_buffer(MediaBuffer *buffer);
 
+    bool has_buffers();
+
     // If nonBlocking is false, it blocks until a buffer is available and
     // passes it to the caller in *buffer, while returning OK.
     // The returned buffer will have a reference count of 1.
@@ -45,7 +51,9 @@
     status_t acquire_buffer(
             MediaBuffer **buffer, bool nonBlocking = false, size_t requestedSize = 0);
 
-protected:
+    size_t buffers() const { return mBuffers.size(); }
+
+    // If buffer is nullptr, have acquire_buffer() check for remote release.
     virtual void signalBufferReturned(MediaBuffer *buffer);
 
 private:
@@ -53,8 +61,8 @@
 
     Mutex mLock;
     Condition mCondition;
-
-    MediaBuffer *mFirstBuffer, *mLastBuffer;
+    size_t mGrowthLimit;  // Do not automatically grow group larger than this.
+    std::list<MediaBuffer *> mBuffers;
 
     MediaBufferGroup(const MediaBufferGroup &);
     MediaBufferGroup &operator=(const MediaBufferGroup &);
diff --git a/include/media/stagefright/MediaCodec.h b/include/media/stagefright/MediaCodec.h
index 497974d..d18aad8 100644
--- a/include/media/stagefright/MediaCodec.h
+++ b/include/media/stagefright/MediaCodec.h
@@ -36,11 +36,11 @@
 class IBatteryStats;
 struct ICrypto;
 class IMemory;
-struct MemoryDealer;
+class MemoryDealer;
 class IResourceManagerClient;
 class IResourceManagerService;
 struct PersistentSurface;
-struct SoftwareRenderer;
+class SoftwareRenderer;
 class Surface;
 
 struct MediaCodec : public AHandler {
diff --git a/include/media/stagefright/MediaCodecSource.h b/include/media/stagefright/MediaCodecSource.h
index cc62786..18b1955 100644
--- a/include/media/stagefright/MediaCodecSource.h
+++ b/include/media/stagefright/MediaCodecSource.h
@@ -49,7 +49,8 @@
 
     bool isVideo() const { return mIsVideo; }
     sp<IGraphicBufferProducer> getGraphicBufferProducer();
-    void setInputBufferTimeOffset(int64_t timeOffsetUs);
+    status_t setInputBufferTimeOffset(int64_t timeOffsetUs);
+    int64_t getFirstSampleSystemTimeUs();
 
     // MediaSource
     virtual status_t start(MetaData *params = NULL);
@@ -79,6 +80,7 @@
         kWhatStop,
         kWhatPause,
         kWhatSetInputBufferTimeOffset,
+        kWhatGetFirstSampleSystemTimeUs,
         kWhatStopStalled,
     };
 
@@ -90,6 +92,7 @@
             uint32_t flags = 0);
 
     status_t onStart(MetaData *params);
+    void onPause();
     status_t init();
     status_t initEncoder();
     void releaseEncoder();
@@ -123,6 +126,8 @@
     List<size_t> mAvailEncoderInputIndices;
     List<int64_t> mDecodingTimeQueue; // decoding time (us) for video
     int64_t mInputBufferTimeOffsetUs;
+    int64_t mFirstSampleSystemTimeUs;
+    bool mPausePending;
 
     // audio drift time
     int64_t mFirstSampleTimeUs;
diff --git a/include/media/stagefright/MediaExtractor.h b/include/media/stagefright/MediaExtractor.h
index 6bf8c9e..f383e72 100644
--- a/include/media/stagefright/MediaExtractor.h
+++ b/include/media/stagefright/MediaExtractor.h
@@ -24,7 +24,7 @@
 namespace android {
 
 class DataSource;
-class MediaSource;
+struct MediaSource;
 class MetaData;
 
 class MediaExtractor : public BnMediaExtractor {
@@ -65,10 +65,10 @@
     bool getDrmFlag() {
         return mIsDrm;
     }
-    virtual char* getDrmTrackInfo(size_t trackID, int *len) {
+    virtual char* getDrmTrackInfo(size_t /*trackID*/, int * /*len*/) {
         return NULL;
     }
-    virtual void setUID(uid_t uid) {
+    virtual void setUID(uid_t /*uid*/) {
     }
 
     virtual const char * name() { return "<unspecified>"; }
diff --git a/include/media/stagefright/MediaFilter.h b/include/media/stagefright/MediaFilter.h
index d0a572c..5725f88 100644
--- a/include/media/stagefright/MediaFilter.h
+++ b/include/media/stagefright/MediaFilter.h
@@ -23,7 +23,7 @@
 
 struct ABuffer;
 struct GraphicBufferListener;
-struct MemoryDealer;
+class MemoryDealer;
 struct SimpleFilter;
 
 struct MediaFilter : public CodecBase {
diff --git a/include/media/stagefright/MediaWriter.h b/include/media/stagefright/MediaWriter.h
index b6476c9..2b19523 100644
--- a/include/media/stagefright/MediaWriter.h
+++ b/include/media/stagefright/MediaWriter.h
@@ -44,11 +44,11 @@
         mListener = listener;
     }
 
-    virtual status_t dump(int fd, const Vector<String16>& args) {
+    virtual status_t dump(int /*fd*/, const Vector<String16>& /*args*/) {
         return OK;
     }
 
-    virtual void setStartTimeOffsetMs(int ms) {}
+    virtual void setStartTimeOffsetMs(int /*ms*/) {}
     virtual int32_t getStartTimeOffsetMs() const { return 0; }
 
 protected:
diff --git a/include/media/stagefright/MetaData.h b/include/media/stagefright/MetaData.h
index be7e5c1..6ba7b32 100644
--- a/include/media/stagefright/MetaData.h
+++ b/include/media/stagefright/MetaData.h
@@ -204,6 +204,8 @@
                                    // transfer Function, value defined by ColorAspects.Transfer.
     kKeyColorMatrix      = 'cMtx', // int32_t,
                                    // color Matrix, value defined by ColorAspects.MatrixCoeffs.
+    kKeyTemporalLayerId  = 'iLyr', // int32_t, temporal layer-id. 0-based (0 => base layer)
+    kKeyTemporalLayerCount = 'cLyr', // int32_t, number of temporal layers encoded
 };
 
 enum {
diff --git a/include/media/stagefright/NuMediaExtractor.h b/include/media/stagefright/NuMediaExtractor.h
index 03e2185..dd31447 100644
--- a/include/media/stagefright/NuMediaExtractor.h
+++ b/include/media/stagefright/NuMediaExtractor.h
@@ -34,7 +34,7 @@
 class DataSource;
 struct IMediaHTTPService;
 class MediaBuffer;
-struct MediaExtractor;
+class MediaExtractor;
 struct MediaSource;
 class MetaData;
 
diff --git a/include/media/stagefright/SurfaceUtils.h b/include/media/stagefright/SurfaceUtils.h
index c1a9c0a..13d580c 100644
--- a/include/media/stagefright/SurfaceUtils.h
+++ b/include/media/stagefright/SurfaceUtils.h
@@ -24,9 +24,14 @@
 
 namespace android {
 
+/**
+ * Configures |nativeWindow| for given |width|x|height|, pixel |format|, |rotation| and |usage|.
+ * If |reconnect| is true, reconnects to the native window before hand.
+ * @return first error encountered, or NO_ERROR on success.
+ */
 status_t setNativeWindowSizeFormatAndUsage(
         ANativeWindow *nativeWindow /* nonnull */,
-        int width, int height, int format, int rotation, int usage);
+        int width, int height, int format, int rotation, int usage, bool reconnect);
 status_t pushBlankBuffersToNativeWindow(ANativeWindow *nativeWindow /* nonnull */);
 
 } // namespace android
diff --git a/include/media/stagefright/foundation/AMessage.h b/include/media/stagefright/foundation/AMessage.h
index 04782ce..782f8e6 100644
--- a/include/media/stagefright/foundation/AMessage.h
+++ b/include/media/stagefright/foundation/AMessage.h
@@ -123,6 +123,9 @@
     bool findBuffer(const char *name, sp<ABuffer> *buffer) const;
     bool findMessage(const char *name, sp<AMessage> *obj) const;
 
+    // finds any numeric type cast to a float
+    bool findAsFloat(const char *name, float *value) const;
+
     bool findRect(
             const char *name,
             int32_t *left, int32_t *top, int32_t *right, int32_t *bottom) const;
diff --git a/include/private/media/AudioTrackShared.h b/include/private/media/AudioTrackShared.h
index ffdb9b5..7becf57 100644
--- a/include/private/media/AudioTrackShared.h
+++ b/include/private/media/AudioTrackShared.h
@@ -522,6 +522,12 @@
         mTimestampMutator.push(timestamp);
     }
 
+    // Flushes the shared ring buffer if the client had requested it using mStreaming.mFlush.
+    // If flush occurs then:
+    //   cblk->u.mStreaming.mFront, ServerProxy::mFlush and ServerProxy::mFlushed will be modified
+    //   client will be notified via Futex
+    virtual void    flushBufferIfNeeded();
+
     // Total count of the number of flushed frames since creation (never reset).
     virtual int64_t     framesFlushed() const { return mFlushed; }
 
diff --git a/include/radio/Radio.h b/include/radio/Radio.h
index 302bf16..a4dfdd1 100644
--- a/include/radio/Radio.h
+++ b/include/radio/Radio.h
@@ -75,7 +75,7 @@
 private:
             Radio(radio_handle_t handle,
                             const sp<RadioCallback>&);
-            static const sp<IRadioService>& getRadioService();
+            static const sp<IRadioService> getRadioService();
 
             Mutex                   mLock;
             sp<IRadio>              mIRadio;
diff --git a/include/soundtrigger/SoundTrigger.h b/include/soundtrigger/SoundTrigger.h
index bf5e1de..9a05cac 100644
--- a/include/soundtrigger/SoundTrigger.h
+++ b/include/soundtrigger/SoundTrigger.h
@@ -68,7 +68,7 @@
 private:
             SoundTrigger(sound_trigger_module_handle_t module,
                             const sp<SoundTriggerCallback>&);
-            static const sp<ISoundTriggerHwService>& getSoundTriggerHwService();
+            static const sp<ISoundTriggerHwService> getSoundTriggerHwService();
 
             Mutex                               mLock;
             sp<ISoundTrigger>                   mISoundTrigger;
diff --git a/media/audioserver/audioserver.rc b/media/audioserver/audioserver.rc
index 2409157..80f78b6 100644
--- a/media/audioserver/audioserver.rc
+++ b/media/audioserver/audioserver.rc
@@ -4,4 +4,4 @@
     # media gid needed for /dev/fm (radio) and for /data/misc/media (tee)
     group audio camera drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct
     ioprio rt 4
-    writepid /dev/cpuset/foreground/tasks
+    writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks
diff --git a/media/common_time/Android.mk b/media/common_time/Android.mk
index 632acbc..aaa0db2 100644
--- a/media/common_time/Android.mk
+++ b/media/common_time/Android.mk
@@ -19,4 +19,6 @@
                           libutils \
                           liblog
 
+LOCAL_CFLAGS := -Wall -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libaudioclient/Android.bp b/media/libaudioclient/Android.bp
new file mode 100644
index 0000000..03dce0c
--- /dev/null
+++ b/media/libaudioclient/Android.bp
@@ -0,0 +1,45 @@
+cc_library_shared {
+    name: "libaudioclient",
+    srcs: [
+        "AudioEffect.cpp",
+        "AudioPolicy.cpp",
+        "AudioRecord.cpp",
+        "AudioSystem.cpp",
+        "AudioTrack.cpp",
+        "AudioTrackShared.cpp",
+        "IAudioFlinger.cpp",
+        "IAudioFlingerClient.cpp",
+        "IAudioPolicyService.cpp",
+        "IAudioPolicyServiceClient.cpp",
+        "IAudioRecord.cpp",
+        "IAudioTrack.cpp",
+        "IEffect.cpp",
+        "IEffectClient.cpp",
+        "ToneGenerator.cpp",
+    ],
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libutils",
+        "libbinder",
+        "libdl",
+        "libaudioutils",
+    ],
+    export_shared_lib_headers: ["libbinder"],
+    // for memory heap analysis
+    static_libs: [
+        "libc_malloc_debug_backtrace",
+        "libc_logging",
+    ],
+    cflags: [
+        "-Werror",
+        "-Wno-error=deprecated-declarations",
+        "-Wall",
+    ],
+    sanitize: {
+        misc_undefined : [
+            "unsigned-integer-overflow",
+            "signed-integer-overflow",
+        ],
+    },
+}
diff --git a/media/libaudioclient/Android.mk b/media/libaudioclient/Android.mk
deleted file mode 100644
index 348ab50..0000000
--- a/media/libaudioclient/Android.mk
+++ /dev/null
@@ -1,50 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES += \
-    AudioEffect.cpp \
-    AudioPolicy.cpp \
-    AudioRecord.cpp \
-    AudioSystem.cpp \
-    AudioTrack.cpp \
-    AudioTrackShared.cpp \
-    IAudioFlinger.cpp \
-    IAudioFlingerClient.cpp \
-    IAudioPolicyService.cpp \
-    IAudioPolicyServiceClient.cpp \
-    IAudioRecord.cpp \
-    IAudioTrack.cpp \
-    IEffect.cpp \
-    IEffectClient.cpp \
-    ToneGenerator.cpp \
-
-LOCAL_SHARED_LIBRARIES := \
-	liblog libcutils libutils libbinder \
-        libdl libaudioutils \
-
-LOCAL_EXPORT_SHARED_LIBRARY_HEADERS := libbinder
-
-# for memory heap analysis
-LOCAL_STATIC_LIBRARIES := libc_malloc_debug_backtrace libc_logging
-
-LOCAL_MODULE:= libaudioclient
-
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-
-LOCAL_C_INCLUDES := \
-    $(TOP)/frameworks/native/include/media/openmax \
-    $(TOP)/frameworks/av/include/media/ \
-    $(TOP)/frameworks/av/media/libstagefright \
-    $(TOP)/frameworks/av/media/libmedia/aidl \
-    $(call include-path-for, audio-utils)
-
-LOCAL_EXPORT_C_INCLUDE_DIRS := \
-    frameworks/av/include/media \
-    frameworks/av/media/libmedia/aidl
-
-LOCAL_CFLAGS += -Werror -Wno-error=deprecated-declarations -Wall
-LOCAL_SANITIZE := unsigned-integer-overflow signed-integer-overflow
-
-include $(BUILD_SHARED_LIBRARY)
-
diff --git a/media/libaudioclient/AudioRecord.cpp b/media/libaudioclient/AudioRecord.cpp
index d9bb856..ff5903d 100644
--- a/media/libaudioclient/AudioRecord.cpp
+++ b/media/libaudioclient/AudioRecord.cpp
@@ -593,11 +593,10 @@
     size_t notificationFrames = mNotificationFramesReq;
     size_t frameCount = mReqFrameCount;
 
-    IAudioFlinger::track_flags_t trackFlags = IAudioFlinger::TRACK_DEFAULT;
+    audio_input_flags_t flags = mFlags;
 
     pid_t tid = -1;
     if (mFlags & AUDIO_INPUT_FLAG_FAST) {
-        trackFlags |= IAudioFlinger::TRACK_FAST;
         if (mAudioRecordThread != 0) {
             tid = mAudioRecordThread->getTid();
         }
@@ -615,7 +614,7 @@
                                                        mChannelMask,
                                                        opPackageName,
                                                        &temp,
-                                                       &trackFlags,
+                                                       &flags,
                                                        mClientPid,
                                                        tid,
                                                        mClientUid,
@@ -638,7 +637,7 @@
 
     mAwaitBoost = false;
     if (mFlags & AUDIO_INPUT_FLAG_FAST) {
-        if (trackFlags & IAudioFlinger::TRACK_FAST) {
+        if (flags & AUDIO_INPUT_FLAG_FAST) {
             ALOGI("AUDIO_INPUT_FLAG_FAST successful; frameCount %zu", frameCount);
             mAwaitBoost = true;
         } else {
@@ -648,6 +647,7 @@
             continue;   // retry
         }
     }
+    mFlags = flags;
 
     if (iMem == 0) {
         ALOGE("Could not get control block");
@@ -891,6 +891,9 @@
             if (read > 0) {
                 break;
             }
+            if (err == TIMED_OUT || err == -EINTR) {
+                err = WOULD_BLOCK;
+            }
             return ssize_t(err);
         }
 
@@ -921,7 +924,7 @@
         int32_t tryCounter = kMaxTries;
         uint32_t pollUs = 10000;
         do {
-            int policy = sched_getscheduler(0);
+            int policy = sched_getscheduler(0) & ~SCHED_RESET_ON_FORK;
             if (policy == SCHED_FIFO || policy == SCHED_RR) {
                 break;
             }
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 33974e0..bbe6a8f 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -751,6 +751,25 @@
     return aps->getDeviceConnectionState(device, device_address);
 }
 
+status_t AudioSystem::handleDeviceConfigChange(audio_devices_t device,
+                                               const char *device_address,
+                                               const char *device_name)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    const char *address = "";
+    const char *name = "";
+
+    if (aps == 0) return PERMISSION_DENIED;
+
+    if (device_address != NULL) {
+        address = device_address;
+    }
+    if (device_name != NULL) {
+        name = device_name;
+    }
+    return aps->handleDeviceConfigChange(device, address, name);
+}
+
 status_t AudioSystem::setPhoneState(audio_mode_t state)
 {
     if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE;
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index b2fc960..c96f16a 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -1372,24 +1372,15 @@
         }
     }
 
-    IAudioFlinger::track_flags_t trackFlags = IAudioFlinger::TRACK_DEFAULT;
+    audio_output_flags_t flags = mFlags;
 
     pid_t tid = -1;
     if (mFlags & AUDIO_OUTPUT_FLAG_FAST) {
-        trackFlags |= IAudioFlinger::TRACK_FAST;
         if (mAudioTrackThread != 0 && !mThreadCanCallJava) {
             tid = mAudioTrackThread->getTid();
         }
     }
 
-    if (mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) {
-        trackFlags |= IAudioFlinger::TRACK_OFFLOAD;
-    }
-
-    if (mFlags & AUDIO_OUTPUT_FLAG_DIRECT) {
-        trackFlags |= IAudioFlinger::TRACK_DIRECT;
-    }
-
     size_t temp = frameCount;   // temp may be replaced by a revised value of frameCount,
                                 // but we will still need the original value also
     audio_session_t originalSessionId = mSessionId;
@@ -1398,7 +1389,7 @@
                                                       mFormat,
                                                       mChannelMask,
                                                       &temp,
-                                                      &trackFlags,
+                                                      &flags,
                                                       mSharedBuffer,
                                                       output,
                                                       mClientPid,
@@ -1451,23 +1442,23 @@
 
     mAwaitBoost = false;
     if (mFlags & AUDIO_OUTPUT_FLAG_FAST) {
-        if (trackFlags & IAudioFlinger::TRACK_FAST) {
+        if (flags & AUDIO_OUTPUT_FLAG_FAST) {
             ALOGV("AUDIO_OUTPUT_FLAG_FAST successful; frameCount %zu", frameCount);
             if (!mThreadCanCallJava) {
                 mAwaitBoost = true;
             }
         } else {
             ALOGW("AUDIO_OUTPUT_FLAG_FAST denied by server; frameCount %zu", frameCount);
-            mFlags = (audio_output_flags_t) (mFlags & ~AUDIO_OUTPUT_FLAG_FAST);
         }
     }
+    mFlags = flags;
 
     // Make sure that application is notified with sufficient margin before underrun.
     // The client can divide the AudioTrack buffer into sub-buffers,
     // and expresses its desire to server as the notification frame count.
     if (mSharedBuffer == 0 && audio_is_linear_pcm(mFormat)) {
         size_t maxNotificationFrames;
-        if (trackFlags & IAudioFlinger::TRACK_FAST) {
+        if (mFlags & AUDIO_OUTPUT_FLAG_FAST) {
             // notify every HAL buffer, regardless of the size of the track buffer
             maxNotificationFrames = afFrameCountHAL;
         } else {
@@ -1748,6 +1739,9 @@
             if (written > 0) {
                 break;
             }
+            if (err == TIMED_OUT || err == -EINTR) {
+                err = WOULD_BLOCK;
+            }
             return ssize_t(err);
         }
 
@@ -1783,7 +1777,7 @@
         int32_t tryCounter = kMaxTries;
         uint32_t pollUs = 10000;
         do {
-            int policy = sched_getscheduler(0);
+            int policy = sched_getscheduler(0) & ~SCHED_RESET_ON_FORK;
             if (policy == SCHED_FIFO || policy == SCHED_RR) {
                 break;
             }
diff --git a/media/libaudioclient/AudioTrackShared.cpp b/media/libaudioclient/AudioTrackShared.cpp
index 7119517..846f8b8 100644
--- a/media/libaudioclient/AudioTrackShared.cpp
+++ b/media/libaudioclient/AudioTrackShared.cpp
@@ -622,6 +622,56 @@
 }
 
 __attribute__((no_sanitize("integer")))
+void ServerProxy::flushBufferIfNeeded()
+{
+    audio_track_cblk_t* cblk = mCblk;
+    // The acquire_load is not really required. But since the write is a release_store in the
+    // client, using acquire_load here makes it easier for people to maintain the code,
+    // and the logic for communicating ipc variables seems somewhat standard,
+    // and there really isn't much penalty for 4 or 8 byte atomics.
+    int32_t flush = android_atomic_acquire_load(&cblk->u.mStreaming.mFlush);
+    if (flush != mFlush) {
+        ALOGV("ServerProxy::flushBufferIfNeeded() mStreaming.mFlush = 0x%x, mFlush = 0x%0x",
+                flush, mFlush);
+        int32_t rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear);
+        int32_t front = cblk->u.mStreaming.mFront;
+
+        // effectively obtain then release whatever is in the buffer
+        const size_t overflowBit = mFrameCountP2 << 1;
+        const size_t mask = overflowBit - 1;
+        int32_t newFront = (front & ~mask) | (flush & mask);
+        ssize_t filled = rear - newFront;
+        if (filled >= (ssize_t)overflowBit) {
+            // front and rear offsets span the overflow bit of the p2 mask
+            // so rebasing newFront on the front offset is off by the overflow bit.
+            // adjust newFront to match rear offset.
+            ALOGV("flush wrap: filled %zx >= overflowBit %zx", filled, overflowBit);
+            newFront += overflowBit;
+            filled -= overflowBit;
+        }
+        // Rather than shutting down on a corrupt flush, just treat it as a full flush
+        if (!(0 <= filled && (size_t) filled <= mFrameCount)) {
+            ALOGE("mFlush %#x -> %#x, front %#x, rear %#x, mask %#x, newFront %#x, "
+                    "filled %zd=%#x",
+                    mFlush, flush, front, rear,
+                    (unsigned)mask, newFront, filled, (unsigned)filled);
+            newFront = rear;
+        }
+        mFlush = flush;
+        android_atomic_release_store(newFront, &cblk->u.mStreaming.mFront);
+        // There is no danger from a false positive, so err on the side of caution
+        if (true /*front != newFront*/) {
+            int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex);
+            if (!(old & CBLK_FUTEX_WAKE)) {
+                (void) syscall(__NR_futex, &cblk->mFutex,
+                        mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1);
+            }
+        }
+        mFlushed += (newFront - front) & mask;
+    }
+}
+
+__attribute__((no_sanitize("integer")))
 status_t ServerProxy::obtainBuffer(Buffer* buffer, bool ackFlush)
 {
     LOG_ALWAYS_FATAL_IF(buffer == NULL || buffer->mFrameCount == 0);
@@ -636,44 +686,9 @@
     int32_t rear;
     // See notes on barriers at ClientProxy::obtainBuffer()
     if (mIsOut) {
-        int32_t flush = cblk->u.mStreaming.mFlush;
+        flushBufferIfNeeded(); // might modify mFront
         rear = android_atomic_acquire_load(&cblk->u.mStreaming.mRear);
         front = cblk->u.mStreaming.mFront;
-        if (flush != mFlush) {
-            // effectively obtain then release whatever is in the buffer
-            const size_t overflowBit = mFrameCountP2 << 1;
-            const size_t mask = overflowBit - 1;
-            int32_t newFront = (front & ~mask) | (flush & mask);
-            ssize_t filled = rear - newFront;
-            if (filled >= (ssize_t)overflowBit) {
-                // front and rear offsets span the overflow bit of the p2 mask
-                // so rebasing newFront on the front offset is off by the overflow bit.
-                // adjust newFront to match rear offset.
-                ALOGV("flush wrap: filled %zx >= overflowBit %zx", filled, overflowBit);
-                newFront += overflowBit;
-                filled -= overflowBit;
-            }
-            // Rather than shutting down on a corrupt flush, just treat it as a full flush
-            if (!(0 <= filled && (size_t) filled <= mFrameCount)) {
-                ALOGE("mFlush %#x -> %#x, front %#x, rear %#x, mask %#x, newFront %#x, "
-                        "filled %zd=%#x",
-                        mFlush, flush, front, rear,
-                        (unsigned)mask, newFront, filled, (unsigned)filled);
-                newFront = rear;
-            }
-            mFlush = flush;
-            android_atomic_release_store(newFront, &cblk->u.mStreaming.mFront);
-            // There is no danger from a false positive, so err on the side of caution
-            if (true /*front != newFront*/) {
-                int32_t old = android_atomic_or(CBLK_FUTEX_WAKE, &cblk->mFutex);
-                if (!(old & CBLK_FUTEX_WAKE)) {
-                    (void) syscall(__NR_futex, &cblk->mFutex,
-                            mClientInServer ? FUTEX_WAKE_PRIVATE : FUTEX_WAKE, 1);
-                }
-            }
-            mFlushed += (newFront - front) & mask;
-            front = newFront;
-        }
     } else {
         front = android_atomic_acquire_load(&cblk->u.mStreaming.mFront);
         rear = cblk->u.mStreaming.mRear;
diff --git a/media/libaudioclient/IAudioFlinger.cpp b/media/libaudioclient/IAudioFlinger.cpp
index 4fc3c9f..65fdedb 100644
--- a/media/libaudioclient/IAudioFlinger.cpp
+++ b/media/libaudioclient/IAudioFlinger.cpp
@@ -101,7 +101,7 @@
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
                                 size_t *pFrameCount,
-                                track_flags_t *flags,
+                                audio_output_flags_t *flags,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_io_handle_t output,
                                 pid_t pid,
@@ -119,7 +119,7 @@
         data.writeInt32(channelMask);
         size_t frameCount = pFrameCount != NULL ? *pFrameCount : 0;
         data.writeInt64(frameCount);
-        track_flags_t lFlags = flags != NULL ? *flags : (track_flags_t) TRACK_DEFAULT;
+        audio_output_flags_t lFlags = flags != NULL ? *flags : AUDIO_OUTPUT_FLAG_NONE;
         data.writeInt32(lFlags);
         // haveSharedBuffer
         if (sharedBuffer != 0) {
@@ -145,7 +145,7 @@
             if (pFrameCount != NULL) {
                 *pFrameCount = frameCount;
             }
-            lFlags = reply.readInt32();
+            lFlags = (audio_output_flags_t)reply.readInt32();
             if (flags != NULL) {
                 *flags = lFlags;
             }
@@ -180,7 +180,7 @@
                                 audio_channel_mask_t channelMask,
                                 const String16& opPackageName,
                                 size_t *pFrameCount,
-                                track_flags_t *flags,
+                                audio_input_flags_t *flags,
                                 pid_t pid,
                                 pid_t tid,
                                 int clientUid,
@@ -200,7 +200,7 @@
         data.writeString16(opPackageName);
         size_t frameCount = pFrameCount != NULL ? *pFrameCount : 0;
         data.writeInt64(frameCount);
-        track_flags_t lFlags = flags != NULL ? *flags : (track_flags_t) TRACK_DEFAULT;
+        audio_input_flags_t lFlags = flags != NULL ? *flags : AUDIO_INPUT_FLAG_NONE;
         data.writeInt32(lFlags);
         data.writeInt32((int32_t) pid);
         data.writeInt32((int32_t) tid);
@@ -221,7 +221,7 @@
             if (pFrameCount != NULL) {
                 *pFrameCount = frameCount;
             }
-            lFlags = reply.readInt32();
+            lFlags = (audio_input_flags_t)reply.readInt32();
             if (flags != NULL) {
                 *flags = lFlags;
             }
@@ -947,7 +947,7 @@
             audio_format_t format = (audio_format_t) data.readInt32();
             audio_channel_mask_t channelMask = data.readInt32();
             size_t frameCount = data.readInt64();
-            track_flags_t flags = (track_flags_t) data.readInt32();
+            audio_output_flags_t flags = (audio_output_flags_t) data.readInt32();
             bool haveSharedBuffer = data.readInt32() != 0;
             sp<IMemory> buffer;
             if (haveSharedBuffer) {
@@ -986,7 +986,7 @@
             audio_channel_mask_t channelMask = data.readInt32();
             const String16& opPackageName = data.readString16();
             size_t frameCount = data.readInt64();
-            track_flags_t flags = (track_flags_t) data.readInt32();
+            audio_input_flags_t flags = (audio_input_flags_t) data.readInt32();
             pid_t pid = (pid_t) data.readInt32();
             pid_t tid = (pid_t) data.readInt32();
             int clientUid = data.readInt32();
diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index 946da8a..0ac5726 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -33,6 +33,7 @@
 enum {
     SET_DEVICE_CONNECTION_STATE = IBinder::FIRST_CALL_TRANSACTION,
     GET_DEVICE_CONNECTION_STATE,
+    HANDLE_DEVICE_CONFIG_CHANGE,
     SET_PHONE_STATE,
     SET_RINGER_MODE,    // reserved, no longer used
     SET_FORCE_USE,
@@ -116,6 +117,19 @@
         return static_cast <audio_policy_dev_state_t>(reply.readInt32());
     }
 
+    virtual status_t handleDeviceConfigChange(audio_devices_t device,
+                                              const char *device_address,
+                                              const char *device_name)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
+        data.writeInt32(static_cast <uint32_t>(device));
+        data.writeCString(device_address);
+        data.writeCString(device_name);
+        remote()->transact(HANDLE_DEVICE_CONFIG_CHANGE, data, &reply);
+        return static_cast <status_t> (reply.readInt32());
+    }
+
     virtual status_t setPhoneState(audio_mode_t state)
     {
         Parcel data, reply;
@@ -821,10 +835,15 @@
                     static_cast <audio_policy_dev_state_t>(data.readInt32());
             const char *device_address = data.readCString();
             const char *device_name = data.readCString();
-            reply->writeInt32(static_cast<uint32_t> (setDeviceConnectionState(device,
-                                                                              state,
-                                                                              device_address,
-                                                                              device_name)));
+            if (device_address == nullptr || device_name == nullptr) {
+                ALOGE("Bad Binder transaction: SET_DEVICE_CONNECTION_STATE for device %u", device);
+                reply->writeInt32(static_cast<int32_t> (BAD_VALUE));
+            } else {
+                reply->writeInt32(static_cast<uint32_t> (setDeviceConnectionState(device,
+                                                                                  state,
+                                                                                  device_address,
+                                                                                  device_name)));
+            }
             return NO_ERROR;
         } break;
 
@@ -833,8 +852,30 @@
             audio_devices_t device =
                     static_cast<audio_devices_t> (data.readInt32());
             const char *device_address = data.readCString();
-            reply->writeInt32(static_cast<uint32_t> (getDeviceConnectionState(device,
-                                                                              device_address)));
+            if (device_address == nullptr) {
+                ALOGE("Bad Binder transaction: GET_DEVICE_CONNECTION_STATE for device %u", device);
+                reply->writeInt32(static_cast<int32_t> (AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE));
+            } else {
+                reply->writeInt32(static_cast<uint32_t> (getDeviceConnectionState(device,
+                                                                                  device_address)));
+            }
+            return NO_ERROR;
+        } break;
+
+        case HANDLE_DEVICE_CONFIG_CHANGE: {
+            CHECK_INTERFACE(IAudioPolicyService, data, reply);
+            audio_devices_t device =
+                    static_cast <audio_devices_t>(data.readInt32());
+            const char *device_address = data.readCString();
+            const char *device_name = data.readCString();
+            if (device_address == nullptr || device_name == nullptr) {
+                ALOGE("Bad Binder transaction: HANDLE_DEVICE_CONFIG_CHANGE for device %u", device);
+                reply->writeInt32(static_cast<int32_t> (BAD_VALUE));
+            } else {
+                reply->writeInt32(static_cast<uint32_t> (handleDeviceConfigChange(device,
+                                                                                  device_address,
+                                                                                  device_name)));
+            }
             return NO_ERROR;
         } break;
 
diff --git a/media/libaudioclient/ToneGenerator.cpp b/media/libaudioclient/ToneGenerator.cpp
index 612d174..7a72237 100644
--- a/media/libaudioclient/ToneGenerator.cpp
+++ b/media/libaudioclient/ToneGenerator.cpp
@@ -746,10 +746,31 @@
                         { .duration = 2000, .waveFreq = { 0 }, 0, 0},
                         { .duration = 0, .waveFreq = { 0 }, 0, 0}},
           .repeatCnt = ToneGenerator::TONEGEN_INF,
-          .repeatSegment = 0 },                              // TONE_UK_RINGTONE
-
-
-
+          .repeatSegment = 0 },                              // TONE_GB_RINGTONE
+        { .segments = { { .duration = 400, .waveFreq = { 400, 450, 0 }, 0, 0 },
+                        { .duration = 200, .waveFreq = { 0 }, 0, 0 },
+                        { .duration = 400, .waveFreq = { 400, 450, 0 }, 0, 0 },
+                        { .duration = 2000, .waveFreq = { 0 }, 0, 0},
+                        { .duration = 0, .waveFreq = { 0 }, 0, 0}},
+          .repeatCnt = ToneGenerator::TONEGEN_INF,
+          .repeatSegment = 0 },                              // TONE_AUSTRALIA_RINGTONE
+        { .segments = { { .duration = 375, .waveFreq = { 425, 0 }, 0, 0 },
+                        { .duration = 375, .waveFreq = { 0 }, 0, 0 },
+                        { .duration = 0 , .waveFreq = { 0 }, 0, 0}},
+          .repeatCnt = ToneGenerator::TONEGEN_INF,
+          .repeatSegment = 0 },                              // TONE_AUSTRALIA_BUSY
+        { .segments = { { .duration = 200, .waveFreq = { 425, 0 }, 0, 0 },
+                        { .duration = 200, .waveFreq = { 0 }, 0, 0 },
+                        { .duration = 200, .waveFreq = { 425, 0 }, 0, 0 },
+                        { .duration = 4400, .waveFreq = { 0 }, 0, 0 },
+                        { .duration = 0 , .waveFreq = { 0 }, 0, 0}},
+          .repeatCnt = ToneGenerator::TONEGEN_INF,
+          .repeatSegment = 0 },                              // TONE_AUSTRALIA_CALL_WAITING
+        { .segments = { { .duration = 375, .waveFreq = { 425, 0 }, 0, 0 },
+                        { .duration = 375, .waveFreq = { 0 }, 0, 0 },
+                        { .duration = 0 , .waveFreq = { 0 }, 0, 0}},
+          .repeatCnt = ToneGenerator::TONEGEN_INF,
+          .repeatSegment = 0 },                              // TONE_AUSTRALIA_CONGESTION
 };
 
 // Used by ToneGenerator::getToneForRegion() to convert user specified supervisory tone type
@@ -775,7 +796,7 @@
             TONE_SUP_CALL_WAITING,       // TONE_SUP_CALL_WAITING
             TONE_SUP_RINGTONE            // TONE_SUP_RINGTONE
         },
-        {   // UK
+        {   // GB
             TONE_SUP_DIAL,               // TONE_SUP_DIAL
             TONE_SUP_BUSY,               // TONE_SUP_BUSY
             TONE_SUP_CONGESTION,         // TONE_SUP_CONGESTION
@@ -783,9 +804,18 @@
             TONE_SUP_RADIO_NOTAVAIL,     // TONE_SUP_RADIO_NOTAVAIL
             TONE_SUP_ERROR,              // TONE_SUP_ERROR
             TONE_SUP_CALL_WAITING,       // TONE_SUP_CALL_WAITING
-            TONE_UK_RINGTONE             // TONE_SUP_RINGTONE
+            TONE_GB_RINGTONE             // TONE_SUP_RINGTONE
+        },
+        {   // AUSTRALIA
+            TONE_ANSI_DIAL,             // TONE_SUP_DIAL
+            TONE_AUSTRALIA_BUSY,        // TONE_SUP_BUSY
+            TONE_AUSTRALIA_CONGESTION,  // TONE_SUP_CONGESTION
+            TONE_SUP_RADIO_ACK,         // TONE_SUP_RADIO_ACK
+            TONE_SUP_RADIO_NOTAVAIL,    // TONE_SUP_RADIO_NOTAVAIL
+            TONE_SUP_ERROR,             // TONE_SUP_ERROR
+            TONE_AUSTRALIA_CALL_WAITING,// TONE_SUP_CALL_WAITING
+            TONE_AUSTRALIA_RINGTONE     // TONE_SUP_RINGTONE
         }
-
 };
 
 
@@ -839,9 +869,10 @@
         mRegion = ANSI;
     } else if (strstr(value, "jp") != NULL) {
         mRegion = JAPAN;
-    } else if (strcmp(value,"uk") == 0 ||
-               strcmp(value,"uk,uk") == 0) {
-        mRegion = UK;
+    } else if (strstr(value, "gb") != NULL) {
+        mRegion = GB;
+    } else if (strstr(value, "au") != NULL) {
+        mRegion = AUSTRALIA;
     } else {
         mRegion = CEPT;
     }
@@ -1064,47 +1095,37 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 bool ToneGenerator::initAudioTrack() {
-
-    // Open audio track in mono, PCM 16bit, default sampling rate, default buffer size
+    // Open audio track in mono, PCM 16bit, default sampling rate.
     mpAudioTrack = new AudioTrack();
-    ALOGV("Create Track: %p", mpAudioTrack.get());
+    ALOGV("AudioTrack(%p) created", mpAudioTrack.get());
 
-    mpAudioTrack->set(mStreamType,
-                      0,    // sampleRate
-                      AUDIO_FORMAT_PCM_16_BIT,
-                      AUDIO_CHANNEL_OUT_MONO,
-                      0,    // frameCount
-                      AUDIO_OUTPUT_FLAG_FAST,
-                      audioCallback,
-                      this, // user
-                      0,    // notificationFrames
-                      0,    // sharedBuffer
-                      mThreadCanCallJava,
-                      AUDIO_SESSION_ALLOCATE,
-                      AudioTrack::TRANSFER_CALLBACK);
+    const size_t frameCount = mProcessSize;
+    status_t status = mpAudioTrack->set(
+            mStreamType,
+            0,    // sampleRate
+            AUDIO_FORMAT_PCM_16_BIT,
+            AUDIO_CHANNEL_OUT_MONO,
+            frameCount,
+            AUDIO_OUTPUT_FLAG_FAST,
+            audioCallback,
+            this, // user
+            0,    // notificationFrames
+            0,    // sharedBuffer
+            mThreadCanCallJava,
+            AUDIO_SESSION_ALLOCATE,
+            AudioTrack::TRANSFER_CALLBACK);
 
-    if (mpAudioTrack->initCheck() != NO_ERROR) {
-        ALOGE("AudioTrack->initCheck failed");
-        goto initAudioTrack_exit;
+    if (status != NO_ERROR) {
+        ALOGE("AudioTrack(%p) set failed with error %d", mpAudioTrack.get(), status);
+        mpAudioTrack.clear();
+        return false;
     }
 
     mpAudioTrack->setVolume(mVolume);
-
     mState = TONE_INIT;
-
     return true;
-
-initAudioTrack_exit:
-
-    ALOGV("Init failed: %p", mpAudioTrack.get());
-
-    // Cleanup
-    mpAudioTrack.clear();
-
-    return false;
 }
 
-
 ////////////////////////////////////////////////////////////////////////////////
 //
 //    Method:        ToneGenerator::audioCallback()
diff --git a/media/libeffects/downmix/EffectDownmix.c b/media/libeffects/downmix/EffectDownmix.c
index 9823c55..5b74845 100644
--- a/media/libeffects/downmix/EffectDownmix.c
+++ b/media/libeffects/downmix/EffectDownmix.c
@@ -16,11 +16,14 @@
 
 #define LOG_TAG "EffectDownmix"
 //#define LOG_NDEBUG 0
-#include <log/log.h>
+
 #include <inttypes.h>
+#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdbool.h>
+
+#include <log/log.h>
+
 #include "EffectDownmix.h"
 
 // Do not submit with DOWNMIX_TEST_CHANNEL_INDEX defined, strictly for testing
diff --git a/media/libeffects/factory/EffectsFactory.c b/media/libeffects/factory/EffectsFactory.c
index db7865a..ba20ac2 100644
--- a/media/libeffects/factory/EffectsFactory.c
+++ b/media/libeffects/factory/EffectsFactory.c
@@ -18,13 +18,17 @@
 //#define LOG_NDEBUG 0
 
 #include "EffectsFactory.h"
-#include <string.h>
-#include <stdlib.h>
-#include <dlfcn.h>
 
-#include <cutils/misc.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
 #include <cutils/config_utils.h>
+#include <cutils/misc.h>
 #include <cutils/properties.h>
+#include <log/log.h>
+
 #include <audio_effects/audio_effects_conf.h>
 
 static list_elem_t *gEffectList; // list of effect_entry_t: all currently created effects
diff --git a/media/libeffects/factory/EffectsFactory.h b/media/libeffects/factory/EffectsFactory.h
index 518800d..b7936e0 100644
--- a/media/libeffects/factory/EffectsFactory.h
+++ b/media/libeffects/factory/EffectsFactory.h
@@ -17,9 +17,10 @@
 #ifndef ANDROID_EFFECTSFACTORY_H_
 #define ANDROID_EFFECTSFACTORY_H_
 
-#include <cutils/log.h>
-#include <pthread.h>
 #include <dirent.h>
+#include <pthread.h>
+
+#include <android/log.h>
 #include <hardware/audio_effect.h>
 
 #if __cplusplus
diff --git a/media/libeffects/loudness/EffectLoudnessEnhancer.cpp b/media/libeffects/loudness/EffectLoudnessEnhancer.cpp
index a5a1a3f..cf00e60 100644
--- a/media/libeffects/loudness/EffectLoudnessEnhancer.cpp
+++ b/media/libeffects/loudness/EffectLoudnessEnhancer.cpp
@@ -16,13 +16,17 @@
 
 #define LOG_TAG "EffectLE"
 //#define LOG_NDEBUG 0
-#include <cutils/log.h>
+
 #include <assert.h>
+#include <math.h>
 #include <stdlib.h>
 #include <string.h>
-#include <new>
 #include <time.h>
-#include <math.h>
+
+#include <new>
+
+#include <log/log.h>
+
 #include <audio_effects/effect_loudnessenhancer.h>
 #include "dsp/core/dynamic_range_compression.h"
 
diff --git a/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h b/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h
index da75ceb..7ea0593 100644
--- a/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h
+++ b/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h
@@ -16,13 +16,15 @@
 #ifndef LE_FX_ENGINE_DSP_CORE_DYNAMIC_RANGE_COMPRESSION_INL_H_
 #define LE_FX_ENGINE_DSP_CORE_DYNAMIC_RANGE_COMPRESSION_INL_H_
 
+#ifndef LOG_TAG
+#define LOG_TAG NULL
+#endif
 //#define LOG_NDEBUG 0
-#include <cutils/log.h>
 
+#include <log/log.h>
 
 namespace le_fx {
 
-
 inline void AdaptiveDynamicRangeCompression::set_knee_threshold(float decibel) {
   // Converts to 1og-base
   knee_threshold_in_decibel_ = decibel;
diff --git a/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp b/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp
index 7bd068e..578f58a 100644
--- a/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp
+++ b/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+//#define LOG_NDEBUG 0
 
 #include <cmath>
 
@@ -22,9 +23,7 @@
 #include "dsp/core/interpolation.h"
 #include "dsp/core/dynamic_range_compression.h"
 
-//#define LOG_NDEBUG 0
-#include <cutils/log.h>
-
+#include <android/log.h>
 
 namespace le_fx {
 
diff --git a/media/libeffects/loudness/dsp/core/dynamic_range_compression.h b/media/libeffects/loudness/dsp/core/dynamic_range_compression.h
index 2821a78..04455c5 100644
--- a/media/libeffects/loudness/dsp/core/dynamic_range_compression.h
+++ b/media/libeffects/loudness/dsp/core/dynamic_range_compression.h
@@ -16,14 +16,14 @@
 #ifndef LE_FX_ENGINE_DSP_CORE_DYNAMIC_RANGE_COMPRESSION_H_
 #define LE_FX_ENGINE_DSP_CORE_DYNAMIC_RANGE_COMPRESSION_H_
 
+//#define LOG_NDEBUG 0
+
 #include "common/core/types.h"
 #include "common/core/math.h"
 #include "dsp/core/basic.h"
 #include "dsp/core/interpolation.h"
 
-//#define LOG_NDEBUG 0
-#include <cutils/log.h>
-
+#include <android/log.h>
 
 namespace le_fx {
 
diff --git a/media/libeffects/loudness/dsp/core/interpolator_base-inl.h b/media/libeffects/loudness/dsp/core/interpolator_base-inl.h
index bd08b65..fb87c79 100644
--- a/media/libeffects/loudness/dsp/core/interpolator_base-inl.h
+++ b/media/libeffects/loudness/dsp/core/interpolator_base-inl.h
@@ -16,13 +16,15 @@
 
 #ifndef LE_FX_ENGINE_DSP_CORE_INTERPOLATOR_BASE_INL_H_
 #define LE_FX_ENGINE_DSP_CORE_INTERPOLATOR_BASE_INL_H_
+#ifndef LOG_TAG
+#define LOG_TAG NULL
+#endif
+//#define LOG_NDEBUG 0
+
+#include <log/log.h>
 
 #include "dsp/core/basic.h"
 
-//#define LOG_NDEBUG 0
-#include <cutils/log.h>
-
-
 namespace le_fx {
 
 namespace sigmod {
@@ -112,7 +114,7 @@
     if (x_data_[n + 1] <= x_data_[n]) {
       ALOGE("InterpolatorBase::Initialize: xData are not ordered or "
               "contain equal values (X[%d] <= X[%d]) (%.5e <= %.5e)",
-              n + 1, n, x_data_[n + 1], x_data_[n]);
+            n + 1, n, x_data_[n + 1], x_data_[n]);
       status_ = false;
       return false;
     }
diff --git a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.cpp b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.cpp
index d7b5f65..80f783d 100644
--- a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.cpp
+++ b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.cpp
@@ -25,11 +25,11 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <cutils/log.h>
+#include <log/log.h>
+
 #include "EffectBundle.h"
 #include "math.h"
 
-
 // effect_handle_t interface implementation for bass boost
 extern "C" const struct effect_interface_s gLvmEffectInterface;
 
diff --git a/media/libeffects/lvm/wrapper/Reverb/EffectReverb.cpp b/media/libeffects/lvm/wrapper/Reverb/EffectReverb.cpp
index f7dcdda..fc82dd1 100644
--- a/media/libeffects/lvm/wrapper/Reverb/EffectReverb.cpp
+++ b/media/libeffects/lvm/wrapper/Reverb/EffectReverb.cpp
@@ -25,7 +25,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <cutils/log.h>
+#include <log/log.h>
+
 #include "EffectReverb.h"
 // from Reverb/lib
 #include "LVREV.h"
diff --git a/media/libeffects/proxy/EffectProxy.cpp b/media/libeffects/proxy/EffectProxy.cpp
index 7f777e7..0eddc15 100644
--- a/media/libeffects/proxy/EffectProxy.cpp
+++ b/media/libeffects/proxy/EffectProxy.cpp
@@ -17,13 +17,16 @@
 #define LOG_TAG "EffectProxy"
 //#define LOG_NDEBUG 0
 
-#include <cutils/log.h>
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 #include <new>
+
 #include <EffectProxy.h>
+
+#include <log/log.h>
 #include <utils/threads.h>
+
 #include <media/EffectsFactoryApi.h>
 
 namespace android {
diff --git a/media/libeffects/testlibs/EffectEqualizer.cpp b/media/libeffects/testlibs/EffectEqualizer.cpp
index 3cb13f2..db4d009 100644
--- a/media/libeffects/testlibs/EffectEqualizer.cpp
+++ b/media/libeffects/testlibs/EffectEqualizer.cpp
@@ -18,17 +18,20 @@
 #define ARRAY_SIZE(array) (sizeof array / sizeof array[0])
 //
 #define LOG_NDEBUG 0
-#include <cutils/log.h>
+
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+
 #include <new>
+
+#include <log/log.h>
+
 #include "AudioEqualizer.h"
 #include "AudioBiquadFilter.h"
 #include "AudioFormatAdapter.h"
 #include <audio_effects/effect_equalizer.h>
 
-
 // effect_handle_t interface implementation for equalizer effect
 extern "C" const struct effect_interface_s gEqualizerInterface;
 
diff --git a/media/libeffects/testlibs/EffectReverb.c b/media/libeffects/testlibs/EffectReverb.c
index f056d19..fce9bed 100644
--- a/media/libeffects/testlibs/EffectReverb.c
+++ b/media/libeffects/testlibs/EffectReverb.c
@@ -16,10 +16,13 @@
 
 #define LOG_TAG "EffectReverb"
 //#define LOG_NDEBUG 0
-#include <cutils/log.h>
+
+#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdbool.h>
+
+#include <log/log.h>
+
 #include "EffectReverb.h"
 #include "EffectsMath.h"
 
diff --git a/media/libeffects/testlibs/EffectsMath.c b/media/libeffects/testlibs/EffectsMath.c
index 41ec662..efd9e87 100644
--- a/media/libeffects/testlibs/EffectsMath.c
+++ b/media/libeffects/testlibs/EffectsMath.c
@@ -15,9 +15,11 @@
  */
 #define LOG_TAG "EFFECTSMATH"
 //#define LOG_NDEBUG 0
-#include <cutils/log.h>
+
 #include <assert.h>
 
+#include <android/log.h>
+
 #include "EffectsMath.h"
 
 // gLogTab contains pre-calculated values of log2(1 + ai5*2^-1 + ai4*2^-2 + ai3*2^-3 + ai2*2^-4 + ai1*2^-5 + ai0*2^-6)
diff --git a/media/libeffects/visualizer/EffectVisualizer.cpp b/media/libeffects/visualizer/EffectVisualizer.cpp
index 0c310c5..0eaa3dc 100644
--- a/media/libeffects/visualizer/EffectVisualizer.cpp
+++ b/media/libeffects/visualizer/EffectVisualizer.cpp
@@ -16,16 +16,19 @@
 
 #define LOG_TAG "EffectVisualizer"
 //#define LOG_NDEBUG 0
-#include <log/log.h>
+
 #include <assert.h>
 #include <inttypes.h>
+#include <math.h>
 #include <stdlib.h>
 #include <string.h>
-#include <new>
 #include <time.h>
-#include <math.h>
-#include <audio_effects/effect_visualizer.h>
 
+#include <new>
+
+#include <log/log.h>
+
+#include <audio_effects/effect_visualizer.h>
 
 extern "C" {
 
@@ -599,6 +602,19 @@
         } break;
 
     case VISUALIZER_CMD_MEASURE: {
+        if (pReplyData == NULL || replySize == NULL ||
+                *replySize < (sizeof(int32_t) * MEASUREMENT_COUNT)) {
+            if (replySize == NULL) {
+                ALOGV("VISUALIZER_CMD_MEASURE() error replySize NULL");
+            } else {
+                ALOGV("VISUALIZER_CMD_MEASURE() error *replySize %" PRIu32
+                        " < (sizeof(int32_t) * MEASUREMENT_COUNT) %" PRIu32,
+                        *replySize,
+                        uint32_t(sizeof(int32_t)) * MEASUREMENT_COUNT);
+            }
+            android_errorWriteLog(0x534e4554, "30229821");
+            return -EINVAL;
+        }
         uint16_t peakU16 = 0;
         float sumRmsSquared = 0.0f;
         uint8_t nbValidMeasurements = 0;
diff --git a/media/libmedia/ICrypto.cpp b/media/libmedia/ICrypto.cpp
index ee7f757..7b261be 100644
--- a/media/libmedia/ICrypto.cpp
+++ b/media/libmedia/ICrypto.cpp
@@ -150,10 +150,10 @@
 
         if (isCryptoError(result)) {
             errorDetailMsg->setTo(reply.readCString());
-        }
-
-        if (dstType == kDestinationTypeVmPointer && result >= 0) {
-            reply.read(dstPtr, result);
+        } else if (dstType == kDestinationTypeVmPointer) {
+            // For the non-secure case, copy the decrypted
+            // data from shared memory to its final destination
+            memcpy(dstPtr, sharedBuffer->pointer(), result);
         }
 
         return result;
@@ -369,7 +369,11 @@
             if (dstType == kDestinationTypeVmPointer) {
                 if (result >= 0) {
                     CHECK_LE(result, static_cast<ssize_t>(totalSize));
-                    reply->write(dstPtr, result);
+                    // For the non-secure case, pass the decrypted
+                    // data back via the shared buffer rather than
+                    // copying it separately over binder to avoid
+                    // binder's 1MB limit.
+                    memcpy(sharedBuffer->pointer(), dstPtr, result);
                 }
                 free(dstPtr);
                 dstPtr = NULL;
diff --git a/media/libmedia/IDataSource.cpp b/media/libmedia/IDataSource.cpp
index 9da1a70..7df3b65 100644
--- a/media/libmedia/IDataSource.cpp
+++ b/media/libmedia/IDataSource.cpp
@@ -23,6 +23,7 @@
 
 #include <binder/IMemory.h>
 #include <binder/Parcel.h>
+#include <drm/drm_framework_common.h>
 #include <media/stagefright/foundation/ADebug.h>
 
 namespace android {
@@ -34,6 +35,7 @@
     CLOSE,
     GET_FLAGS,
     TO_STRING,
+    DRM_INITIALIZATION,
 };
 
 struct BpDataSource : public BpInterface<IDataSource> {
@@ -85,6 +87,47 @@
         remote()->transact(TO_STRING, data, &reply);
         return reply.readString8();
     }
+
+    virtual sp<DecryptHandle> DrmInitialization(const char *mime) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
+        if (mime == NULL) {
+            data.writeInt32(0);
+        } else {
+            data.writeInt32(1);
+            data.writeCString(mime);
+        }
+        remote()->transact(DRM_INITIALIZATION, data, &reply);
+        sp<DecryptHandle> handle;
+        if (reply.dataAvail() != 0) {
+            handle = new DecryptHandle();
+            handle->decryptId = reply.readInt32();
+            handle->mimeType = reply.readString8();
+            handle->decryptApiType = reply.readInt32();
+            handle->status = reply.readInt32();
+
+            const int bufferLength = data.readInt32();
+            if (bufferLength != -1) {
+                handle->decryptInfo = new DecryptInfo();
+                handle->decryptInfo->decryptBufferLength = bufferLength;
+            }
+
+            size_t size = data.readInt32();
+            for (size_t i = 0; i < size; ++i) {
+                DrmCopyControl key = (DrmCopyControl)data.readInt32();
+                int value = data.readInt32();
+                handle->copyControlVector.add(key, value);
+            }
+
+            size = data.readInt32();
+            for (size_t i = 0; i < size; ++i) {
+                String8 key = data.readString8();
+                String8 value = data.readString8();
+                handle->extendedData.add(key, value);
+            }
+        }
+        return handle;
+    }
 };
 
 IMPLEMENT_META_INTERFACE(DataSource, "android.media.IDataSource");
@@ -127,6 +170,42 @@
             reply->writeString8(toString());
             return NO_ERROR;
         } break;
+        case DRM_INITIALIZATION: {
+            CHECK_INTERFACE(IDataSource, data, reply);
+            const char *mime = NULL;
+            const int32_t flag = data.readInt32();
+            if (flag != 0) {
+                mime = data.readCString();
+            }
+            sp<DecryptHandle> handle = DrmInitialization(mime);
+            if (handle != NULL) {
+                reply->writeInt32(handle->decryptId);
+                reply->writeString8(handle->mimeType);
+                reply->writeInt32(handle->decryptApiType);
+                reply->writeInt32(handle->status);
+
+                if (handle->decryptInfo != NULL) {
+                    reply->writeInt32(handle->decryptInfo->decryptBufferLength);
+                } else {
+                    reply->writeInt32(-1);
+                }
+
+                size_t size = handle->copyControlVector.size();
+                reply->writeInt32(size);
+                for (size_t i = 0; i < size; ++i) {
+                    reply->writeInt32(handle->copyControlVector.keyAt(i));
+                    reply->writeInt32(handle->copyControlVector.valueAt(i));
+                }
+
+                size = handle->extendedData.size();
+                reply->writeInt32(size);
+                for (size_t i = 0; i < size; ++i) {
+                    reply->writeString8(handle->extendedData.keyAt(i));
+                    reply->writeString8(handle->extendedData.valueAt(i));
+                }
+            }
+            return NO_ERROR;
+        } break;
 
         default:
             return BBinder::onTransact(code, data, reply, flags);
diff --git a/media/libmedia/IDrm.cpp b/media/libmedia/IDrm.cpp
index d2b3aae..c4558c6 100644
--- a/media/libmedia/IDrm.cpp
+++ b/media/libmedia/IDrm.cpp
@@ -891,7 +891,7 @@
             readVector(data, keyId);
             readVector(data, message);
             readVector(data, signature);
-            bool match;
+            bool match = false;
             uint32_t result = verify(sessionId, keyId, message, signature, match);
             reply->writeInt32(match);
             reply->writeInt32(result);
diff --git a/media/libmedia/IMediaExtractor.cpp b/media/libmedia/IMediaExtractor.cpp
index e8ad75b..4be1118 100644
--- a/media/libmedia/IMediaExtractor.cpp
+++ b/media/libmedia/IMediaExtractor.cpp
@@ -160,6 +160,9 @@
             if (data.readUint32(&idx) == NO_ERROR &&
                     data.readUint32(&flags) == NO_ERROR) {
                 sp<MetaData> meta = getTrackMetaData(idx, flags);
+                if (meta == NULL) {
+                    return UNKNOWN_ERROR;
+                }
                 meta->writeToParcel(*reply);
                 return NO_ERROR;
             }
@@ -206,11 +209,16 @@
     for (size_t i = 0; i < tracks.size(); i++) {
         const String8 desc = trackDescriptions.itemAt(i);
         str.appendFormat("    track {%s} ", desc.string());
-        const sp<IMediaSource> source = tracks.itemAt(i).promote();
-        if (source == NULL) {
-            str.append(": deleted\n");
+        wp<IMediaSource> wSource = tracks.itemAt(i);
+        if (wSource == NULL) {
+            str.append(": null\n");
         } else {
-            str.appendFormat(": active\n");
+            const sp<IMediaSource> source = wSource.promote();
+            if (source == NULL) {
+                str.append(": deleted\n");
+            } else {
+                str.appendFormat(": active\n");
+            }
         }
     }
     return str;
@@ -229,9 +237,14 @@
         if (extractor != NULL && extractor == ex) {
             if (instance.tracks.size() > 5) {
                 instance.tracks.resize(5);
+                instance.trackDescriptions.resize(5);
             }
             instance.tracks.push_front(source);
-            instance.trackDescriptions.add(source->getFormat()->toString());
+            if (source != NULL) {
+                instance.trackDescriptions.push_front(source->getFormat()->toString());
+            } else {
+                instance.trackDescriptions.push_front(String8::empty());
+            }
             break;
         }
     }
diff --git a/media/libmedia/IMediaExtractorService.cpp b/media/libmedia/IMediaExtractorService.cpp
index dcbbde2..d170c22 100644
--- a/media/libmedia/IMediaExtractorService.cpp
+++ b/media/libmedia/IMediaExtractorService.cpp
@@ -71,6 +71,9 @@
                 ALOGE("Error reading source from parcel");
                 return ret;
             }
+            // If we make an extractor through Binder, enabled shared memory
+            // for MediaBuffers for this process.
+            MediaBuffer::useSharedMemory();
             sp<IDataSource> source = interface_cast<IDataSource>(b);
             const char *mime = data.readCString();
             sp<IMediaExtractor> ex = makeExtractor(source, mime);
diff --git a/media/libmedia/IMediaSource.cpp b/media/libmedia/IMediaSource.cpp
index 7e40e4f..595bad9 100644
--- a/media/libmedia/IMediaSource.cpp
+++ b/media/libmedia/IMediaSource.cpp
@@ -36,79 +36,39 @@
     STOP,
     PAUSE,
     GETFORMAT,
-    READ,
+    // READ, deprecated
     READMULTIPLE,
-    RELEASE_BUFFER
+    RELEASE_BUFFER,
+    SUPPORT_NONBLOCKING_READ,
 };
 
 enum {
     NULL_BUFFER,
     SHARED_BUFFER,
-    INLINE_BUFFER
+    INLINE_BUFFER,
+    SHARED_BUFFER_INDEX,
 };
 
-class RemoteMediaBufferReleaser : public BBinder {
-public:
-    RemoteMediaBufferReleaser(MediaBuffer *buf, sp<BnMediaSource> owner) {
-        mBuf = buf;
-        mOwner = owner;
-    }
-    ~RemoteMediaBufferReleaser() {
-        if (mBuf) {
-            ALOGW("RemoteMediaBufferReleaser dtor called while still holding buffer");
-            mBuf->release();
-        }
-    }
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0) {
-        if (code == RELEASE_BUFFER) {
-            mBuf->release();
-            mBuf = NULL;
-            return OK;
-        } else {
-            return BBinder::onTransact(code, data, reply, flags);
-        }
-    }
-private:
-    MediaBuffer *mBuf;
-    // Keep a ref to ensure MediaBuffer is released before the owner, i.e., BnMediaSource,
-    // because BnMediaSource needs to delete MediaBufferGroup in its dtor and
-    // MediaBufferGroup dtor requires all MediaBuffer's have 0 ref count.
-    sp<BnMediaSource> mOwner;
-};
-
-
 class RemoteMediaBufferWrapper : public MediaBuffer {
 public:
-    RemoteMediaBufferWrapper(sp<IMemory> mem, sp<IBinder> source);
+    RemoteMediaBufferWrapper(const sp<IMemory> &mem)
+        : MediaBuffer(mem) {
+        ALOGV("RemoteMediaBufferWrapper: creating %p", this);
+    }
+
 protected:
-    virtual ~RemoteMediaBufferWrapper();
-private:
-    sp<IMemory> mMemory;
-    sp<IBinder> mRemoteSource;
+    virtual ~RemoteMediaBufferWrapper() {
+        // Release our interest in the MediaBuffer's shared memory.
+        int32_t old = addRemoteRefcount(-1);
+        ALOGV("RemoteMediaBufferWrapper: releasing %p, refcount %d", this, old - 1);
+        mMemory.clear(); // don't set the dead object flag.
+    }
 };
 
-RemoteMediaBufferWrapper::RemoteMediaBufferWrapper(sp<IMemory> mem, sp<IBinder> source)
-: MediaBuffer(mem->pointer(), mem->size()) {
-    mMemory = mem;
-    mRemoteSource = source;
-}
-
-RemoteMediaBufferWrapper::~RemoteMediaBufferWrapper() {
-    mMemory.clear();
-    // Explicitly ask the remote side to release the buffer. We could also just clear
-    // mRemoteSource, but that doesn't immediately release the reference on the remote side.
-    Parcel data, reply;
-    mRemoteSource->transact(RELEASE_BUFFER, data, &reply);
-    mRemoteSource.clear();
-}
-
 class BpMediaSource : public BpInterface<IMediaSource> {
 public:
     BpMediaSource(const sp<IBinder>& impl)
-        : BpInterface<IMediaSource>(impl)
+        : BpInterface<IMediaSource>(impl), mBuffersSinceStop(0)
     {
     }
 
@@ -135,7 +95,10 @@
         ALOGV("stop");
         Parcel data, reply;
         data.writeInterfaceToken(BpMediaSource::getInterfaceDescriptor());
-        return remote()->transact(STOP, data, &reply);
+        status_t status = remote()->transact(STOP, data, &reply);
+        mMemoryCache.reset();
+        mBuffersSinceStop = 0;
+        return status;
     }
 
     virtual sp<MetaData> getFormat() {
@@ -151,46 +114,16 @@
     }
 
     virtual status_t read(MediaBuffer **buffer, const ReadOptions *options) {
-        ALOGV("read");
-        Parcel data, reply;
-        data.writeInterfaceToken(BpMediaSource::getInterfaceDescriptor());
-        if (options) {
-            data.writeByteArray(sizeof(*options), (uint8_t*) options);
-        }
-        status_t ret = remote()->transact(READ, data, &reply);
-        if (ret != NO_ERROR) {
-            return ret;
-        }
-        // wrap the returned data in a MediaBuffer
-        ret = reply.readInt32();
-        int32_t buftype = reply.readInt32();
-        if (buftype == SHARED_BUFFER) {
-            sp<IBinder> remote = reply.readStrongBinder();
-            sp<IBinder> binder = reply.readStrongBinder();
-            sp<IMemory> mem = interface_cast<IMemory>(binder);
-            if (mem == NULL) {
-                ALOGE("received NULL IMemory for shared buffer");
-            }
-            size_t offset = reply.readInt32();
-            size_t length = reply.readInt32();
-            MediaBuffer *buf = new RemoteMediaBufferWrapper(mem, remote);
-            buf->set_range(offset, length);
-            buf->meta_data()->updateFromParcel(reply);
-            *buffer = buf;
-        } else if (buftype == NULL_BUFFER) {
-            ALOGV("got status %d and NULL buffer", ret);
-            *buffer = NULL;
-        } else {
-            int32_t len = reply.readInt32();
-            ALOGV("got status %d and len %d", ret, len);
-            *buffer = new MediaBuffer(len);
-            reply.read((*buffer)->data(), len);
-            (*buffer)->meta_data()->updateFromParcel(reply);
-        }
+        Vector<MediaBuffer *> buffers;
+        status_t ret = readMultiple(&buffers, 1 /* maxNumBuffers */, options);
+        *buffer = buffers.size() == 0 ? nullptr : buffers[0];
+        ALOGV("read status %d, bufferCount %u, sinceStop %u",
+                ret, *buffer != nullptr, mBuffersSinceStop);
         return ret;
     }
 
-    virtual status_t readMultiple(Vector<MediaBuffer *> *buffers, uint32_t maxNumBuffers) {
+    virtual status_t readMultiple(
+            Vector<MediaBuffer *> *buffers, uint32_t maxNumBuffers, const ReadOptions *options) {
         ALOGV("readMultiple");
         if (buffers == NULL || !buffers->isEmpty()) {
             return BAD_VALUE;
@@ -198,29 +131,78 @@
         Parcel data, reply;
         data.writeInterfaceToken(BpMediaSource::getInterfaceDescriptor());
         data.writeUint32(maxNumBuffers);
+        if (options != nullptr) {
+            data.writeByteArray(sizeof(*options), (uint8_t*) options);
+        }
         status_t ret = remote()->transact(READMULTIPLE, data, &reply);
+        mMemoryCache.gc();
         if (ret != NO_ERROR) {
             return ret;
         }
         // wrap the returned data in a vector of MediaBuffers
-        int32_t bufCount = 0;
-        while (1) {
-            if (reply.readInt32() == 0) {
-                break;
+        int32_t buftype;
+        uint32_t bufferCount = 0;
+        while ((buftype = reply.readInt32()) != NULL_BUFFER) {
+            LOG_ALWAYS_FATAL_IF(bufferCount >= maxNumBuffers,
+                    "Received %u+ buffers and requested %u buffers",
+                    bufferCount + 1, maxNumBuffers);
+            MediaBuffer *buf;
+            if (buftype == SHARED_BUFFER || buftype == SHARED_BUFFER_INDEX) {
+                uint64_t index = reply.readUint64();
+                ALOGV("Received %s index %llu",
+                        buftype == SHARED_BUFFER ? "SHARED_BUFFER" : "SHARED_BUFFER_INDEX",
+                        (unsigned long long) index);
+                sp<IMemory> mem;
+                if (buftype == SHARED_BUFFER) {
+                    sp<IBinder> binder = reply.readStrongBinder();
+                    mem = interface_cast<IMemory>(binder);
+                    LOG_ALWAYS_FATAL_IF(mem.get() == nullptr,
+                            "Received NULL IMemory for shared buffer");
+                    mMemoryCache.insert(index, mem);
+                } else {
+                    mem = mMemoryCache.lookup(index);
+                    LOG_ALWAYS_FATAL_IF(mem.get() == nullptr,
+                            "Received invalid IMemory index for shared buffer: %llu",
+                            (unsigned long long)index);
+                }
+                size_t offset = reply.readInt32();
+                size_t length = reply.readInt32();
+                buf = new RemoteMediaBufferWrapper(mem);
+                buf->set_range(offset, length);
+                buf->meta_data()->updateFromParcel(reply);
+            } else { // INLINE_BUFFER
+                int32_t len = reply.readInt32();
+                ALOGV("INLINE_BUFFER status %d and len %d", ret, len);
+                buf = new MediaBuffer(len);
+                reply.read(buf->data(), len);
+                buf->meta_data()->updateFromParcel(reply);
             }
-            int32_t len = reply.readInt32();
-            ALOGV("got len %d", len);
-            MediaBuffer *buf = new MediaBuffer(len);
-            reply.read(buf->data(), len);
-            buf->meta_data()->updateFromParcel(reply);
             buffers->push_back(buf);
-            ++bufCount;
+            ++bufferCount;
+            ++mBuffersSinceStop;
         }
         ret = reply.readInt32();
-        ALOGV("got status %d, bufCount %d", ret, bufCount);
+        ALOGV("readMultiple status %d, bufferCount %u, sinceStop %u",
+                ret, bufferCount, mBuffersSinceStop);
         return ret;
     }
 
+    // Binder proxy adds readMultiple support.
+    virtual bool supportReadMultiple() {
+        return true;
+    }
+
+    virtual bool supportNonblockingRead() {
+        ALOGV("supportNonblockingRead");
+        Parcel data, reply;
+        data.writeInterfaceToken(BpMediaSource::getInterfaceDescriptor());
+        status_t ret = remote()->transact(SUPPORT_NONBLOCKING_READ, data, &reply);
+        if (ret == NO_ERROR) {
+            return reply.readInt32() != 0;
+        }
+        return false;
+    }
+
     virtual status_t pause() {
         ALOGV("pause");
         Parcel data, reply;
@@ -234,10 +216,51 @@
     }
 
 private:
+
+    uint32_t mBuffersSinceStop; // Buffer tracking variable
+
     // NuPlayer passes pointers-to-metadata around, so we use this to keep the metadata alive
     // XXX: could we use this for caching, or does metadata change on the fly?
     sp<MetaData> mMetaData;
 
+    // Cache all IMemory objects received from MediaExtractor.
+    // We gc IMemory objects that are no longer active (referenced by a MediaBuffer).
+
+    struct MemoryCache {
+        sp<IMemory> lookup(uint64_t index) {
+            auto p = mIndexToMemory.find(index);
+            if (p == mIndexToMemory.end()) {
+                ALOGE("cannot find index!");
+                return nullptr;
+            }
+            return p->second;
+        }
+
+        void insert(uint64_t index, const sp<IMemory> &mem) {
+            if (mIndexToMemory.find(index) != mIndexToMemory.end()) {
+                ALOGE("index %llu already present", (unsigned long long)index);
+                return;
+            }
+            (void)mIndexToMemory.emplace(index, mem);
+        }
+
+        void reset() {
+            mIndexToMemory.clear();
+        }
+
+        void gc() {
+            for (auto it = mIndexToMemory.begin(); it != mIndexToMemory.end(); ) {
+                if (MediaBuffer::isDeadObject(it->second)) {
+                    it = mIndexToMemory.erase(it);
+                } else {
+                    ++it;
+                }
+            }
+        }
+    private:
+        // C++14 unordered_map erase on iterator is stable; C++11 has no guarantee.
+        std::map<uint64_t, sp<IMemory>> mIndexToMemory;
+    } mMemoryCache;
 };
 
 IMPLEMENT_META_INTERFACE(MediaSource, "android.media.IMediaSource");
@@ -246,12 +269,11 @@
 #define LOG_TAG "BnMediaSource"
 
 BnMediaSource::BnMediaSource()
-    : mGroup(NULL) {
+    : mBuffersSinceStop(0)
+    , mGroup(new MediaBufferGroup(kBinderMediaBuffers /* growthLimit */)) {
 }
 
 BnMediaSource::~BnMediaSource() {
-    delete mGroup;
-    mGroup = NULL;
 }
 
 status_t BnMediaSource::onTransact(
@@ -274,11 +296,16 @@
         case STOP: {
             ALOGV("stop");
             CHECK_INTERFACE(IMediaSource, data, reply);
-            return stop();
+            mGroup->signalBufferReturned(nullptr);
+            status_t status = stop();
+            mIndexCache.reset();
+            mBuffersSinceStop = 0;
+            return status;
         }
         case PAUSE: {
             ALOGV("pause");
             CHECK_INTERFACE(IMediaSource, data, reply);
+            mGroup->signalBufferReturned(nullptr);
             return pause();
         }
         case GETFORMAT: {
@@ -291,116 +318,130 @@
             }
             return UNKNOWN_ERROR;
         }
-        case READ: {
-            ALOGV("read");
-            CHECK_INTERFACE(IMediaSource, data, reply);
-            status_t ret;
-            MediaBuffer *buf = NULL;
-            ReadOptions opts;
-            uint32_t len;
-            if (data.readUint32(&len) == NO_ERROR &&
-                    len == sizeof(opts) && data.read((void*)&opts, len) == NO_ERROR) {
-                ret = read(&buf, &opts);
-            } else {
-                ret = read(&buf, NULL);
-            }
-
-            reply->writeInt32(ret);
-            if (buf != NULL) {
-                size_t usedSize = buf->range_length();
-                // even if we're using shared memory, we might not want to use it, since for small
-                // sizes it's faster to copy data through the Binder transaction
-                // On the other hand, if the data size is large enough, it's better to use shared
-                // memory. When data is too large, binder can't handle it.
-                if (usedSize >= MediaBuffer::kSharedMemThreshold) {
-                    ALOGV("use shared memory: %zu", usedSize);
-
-                    MediaBuffer *transferBuf = buf;
-                    size_t offset = buf->range_offset();
-                    if (transferBuf->mMemory == NULL) {
-                        if (mGroup == NULL) {
-                            mGroup = new MediaBufferGroup;
-                            size_t allocateSize = usedSize;
-                            if (usedSize < SIZE_MAX / 3) {
-                                allocateSize = usedSize * 3 / 2;
-                            }
-                            mGroup->add_buffer(new MediaBuffer(allocateSize));
-                        }
-
-                        MediaBuffer *newBuf = NULL;
-                        ret = mGroup->acquire_buffer(
-                                &newBuf, false /* nonBlocking */, usedSize);
-                        if (ret != OK || newBuf == NULL || newBuf->mMemory == NULL) {
-                            ALOGW("failed to acquire shared memory, ret %d", ret);
-                            buf->release();
-                            if (newBuf != NULL) {
-                                newBuf->release();
-                            }
-                            reply->writeInt32(NULL_BUFFER);
-                            return NO_ERROR;
-                        }
-                        transferBuf = newBuf;
-                        memcpy(transferBuf->data(), (uint8_t*)buf->data() + buf->range_offset(),
-                                buf->range_length());
-                        offset = 0;
-                    }
-
-                    reply->writeInt32(SHARED_BUFFER);
-                    RemoteMediaBufferReleaser *wrapper =
-                        new RemoteMediaBufferReleaser(transferBuf, this);
-                    reply->writeStrongBinder(wrapper);
-                    reply->writeStrongBinder(IInterface::asBinder(transferBuf->mMemory));
-                    reply->writeInt32(offset);
-                    reply->writeInt32(usedSize);
-                    buf->meta_data()->writeToParcel(*reply);
-                    if (buf->mMemory == NULL) {
-                        buf->release();
-                    }
-                } else {
-                    // buffer is small: copy it
-                    if (buf->mMemory != NULL) {
-                        ALOGV("%zu shared mem available, but only %zu used", buf->mMemory->size(), buf->range_length());
-                    }
-                    reply->writeInt32(INLINE_BUFFER);
-                    reply->writeByteArray(buf->range_length(), (uint8_t*)buf->data() + buf->range_offset());
-                    buf->meta_data()->writeToParcel(*reply);
-                    buf->release();
-                }
-            } else {
-                ALOGV("ret %d, buf %p", ret, buf);
-                reply->writeInt32(NULL_BUFFER);
-            }
-            return NO_ERROR;
-        }
         case READMULTIPLE: {
-            ALOGV("readmultiple");
+            ALOGV("readMultiple");
             CHECK_INTERFACE(IMediaSource, data, reply);
+
+            // Get max number of buffers to read.
             uint32_t maxNumBuffers;
             data.readUint32(&maxNumBuffers);
-            status_t ret = NO_ERROR;
-            uint32_t bufferCount = 0;
             if (maxNumBuffers > kMaxNumReadMultiple) {
                 maxNumBuffers = kMaxNumReadMultiple;
             }
-            while (bufferCount < maxNumBuffers) {
-                if (reply->dataSize() >= MediaBuffer::kSharedMemThreshold) {
+
+            // Get read options, if any.
+            ReadOptions opts;
+            uint32_t len;
+            const bool useOptions =
+                    data.readUint32(&len) == NO_ERROR
+                    && len == sizeof(opts)
+                    && data.read((void *)&opts, len) == NO_ERROR;
+
+            mGroup->signalBufferReturned(nullptr);
+            mIndexCache.gc();
+            size_t inlineTransferSize = 0;
+            status_t ret = NO_ERROR;
+            uint32_t bufferCount = 0;
+            for (; bufferCount < maxNumBuffers; ++bufferCount, ++mBuffersSinceStop) {
+                MediaBuffer *buf = nullptr;
+                ret = read(&buf, useOptions ? &opts : nullptr);
+                opts.clearNonPersistent(); // Remove options that only apply to first buffer.
+                if (ret != NO_ERROR || buf == nullptr) {
                     break;
                 }
 
-                MediaBuffer *buf = NULL;
-                ret = read(&buf, NULL);
-                if (ret != NO_ERROR || buf == NULL) {
-                    break;
+                // Even if we're using shared memory, we might not want to use it, since for small
+                // sizes it's faster to copy data through the Binder transaction
+                // On the other hand, if the data size is large enough, it's better to use shared
+                // memory. When data is too large, binder can't handle it.
+                //
+                // TODO: reduce MediaBuffer::kSharedMemThreshold
+                MediaBuffer *transferBuf = nullptr;
+                const size_t length = buf->range_length();
+                size_t offset = buf->range_offset();
+                if (length >= (supportNonblockingRead() && buf->mMemory != nullptr ?
+                        kTransferSharedAsSharedThreshold : kTransferInlineAsSharedThreshold)) {
+                    if (buf->mMemory != nullptr) {
+                        ALOGV("Use shared memory: %zu", length);
+                        transferBuf = buf;
+                    } else {
+                        ALOGD("Large buffer %zu without IMemory!", length);
+                        ret = mGroup->acquire_buffer(
+                                &transferBuf, false /* nonBlocking */, length);
+                        if (ret != OK
+                                || transferBuf == nullptr
+                                || transferBuf->mMemory == nullptr) {
+                            ALOGW("Failed to acquire shared memory, size %zu, ret %d",
+                                    length, ret);
+                            if (transferBuf != nullptr) {
+                                transferBuf->release();
+                                transferBuf = nullptr;
+                            }
+                            // Current buffer transmit inline; no more additional buffers.
+                            maxNumBuffers = 0;
+                        } else {
+                            memcpy(transferBuf->data(), (uint8_t*)buf->data() + offset, length);
+                            offset = 0;
+                            if (!mGroup->has_buffers()) {
+                                maxNumBuffers = 0; // No more MediaBuffers, stop readMultiple.
+                            }
+                        }
+                    }
                 }
-                ++bufferCount;
-                reply->writeInt32(1);  // indicate one more MediaBuffer.
-                reply->writeByteArray(
-                        buf->range_length(), (uint8_t*)buf->data() + buf->range_offset());
-                buf->meta_data()->writeToParcel(*reply);
+                if (transferBuf != nullptr) { // Using shared buffers.
+                    if (!transferBuf->isObserved()) {
+                        // Transfer buffer must be part of a MediaBufferGroup.
+                        ALOGV("adding shared memory buffer %p to local group", transferBuf);
+                        mGroup->add_buffer(transferBuf);
+                        transferBuf->add_ref(); // We have already acquired buffer.
+                    }
+                    uint64_t index = mIndexCache.lookup(transferBuf->mMemory);
+                    if (index == 0) {
+                        index = mIndexCache.insert(transferBuf->mMemory);
+                        reply->writeInt32(SHARED_BUFFER);
+                        reply->writeUint64(index);
+                        reply->writeStrongBinder(IInterface::asBinder(transferBuf->mMemory));
+                        ALOGV("SHARED_BUFFER(%p) %llu",
+                                transferBuf, (unsigned long long)index);
+                    } else {
+                        reply->writeInt32(SHARED_BUFFER_INDEX);
+                        reply->writeUint64(index);
+                        ALOGV("SHARED_BUFFER_INDEX(%p) %llu",
+                                transferBuf, (unsigned long long)index);
+                    }
+                    reply->writeInt32(offset);
+                    reply->writeInt32(length);
+                    buf->meta_data()->writeToParcel(*reply);
+                    transferBuf->addRemoteRefcount(1);
+                    if (transferBuf != buf) {
+                        transferBuf->release(); // release local ref
+                    } else if (!supportNonblockingRead()) {
+                        maxNumBuffers = 0; // stop readMultiple with one shared buffer.
+                    }
+                } else {
+                    ALOGV_IF(buf->mMemory != nullptr,
+                            "INLINE(%p) %zu shared mem available, but only %zu used",
+                            buf, buf->mMemory->size(), length);
+                    reply->writeInt32(INLINE_BUFFER);
+                    reply->writeByteArray(length, (uint8_t*)buf->data() + offset);
+                    buf->meta_data()->writeToParcel(*reply);
+                    inlineTransferSize += length;
+                    if (inlineTransferSize > kInlineMaxTransfer) {
+                        maxNumBuffers = 0; // stop readMultiple if inline transfer is too large.
+                    }
+                }
                 buf->release();
             }
-            reply->writeInt32(0);  // indicate no more MediaBuffer.
+            reply->writeInt32(NULL_BUFFER); // Indicate no more MediaBuffers.
             reply->writeInt32(ret);
+            ALOGV("readMultiple status %d, bufferCount %u, sinceStop %u",
+                    ret, bufferCount, mBuffersSinceStop);
+            return NO_ERROR;
+        }
+        case SUPPORT_NONBLOCKING_READ: {
+            ALOGV("supportNonblockingRead");
+            CHECK_INTERFACE(IMediaSource, data, reply);
+            reply->writeInt32((int32_t)supportNonblockingRead());
             return NO_ERROR;
         }
         default:
diff --git a/media/libmedia/IOMX.cpp b/media/libmedia/IOMX.cpp
index 6d5e7f6..beca464 100644
--- a/media/libmedia/IOMX.cpp
+++ b/media/libmedia/IOMX.cpp
@@ -758,7 +758,7 @@
                     params = mmap(NULL, allocSize, PROT_READ | PROT_WRITE,
                             MAP_PRIVATE | MAP_ANONYMOUS, -1 /* fd */, 0 /* offset */);
                 }
-                if (params != MAP_FAILED) {
+                if (params != MAP_FAILED && params != NULL) {
                     err = data.read(params, size);
                     if (err != OK) {
                         android_errorWriteLog(0x534e4554, "26914474");
@@ -775,31 +775,35 @@
                             // mark the last page as inaccessible, to avoid exploitation
                             // of codecs that access past the end of the allocation because
                             // they didn't check the size
-                            mprotect((char*)params + allocSize - pageSize, pageSize, PROT_NONE);
-                            switch (code) {
-                                case GET_PARAMETER:
-                                    err = getParameter(node, index, params, size);
-                                    break;
-                                case SET_PARAMETER:
-                                    err = setParameter(node, index, params, size);
-                                    break;
-                                case GET_CONFIG:
-                                    err = getConfig(node, index, params, size);
-                                    break;
-                                case SET_CONFIG:
-                                    err = setConfig(node, index, params, size);
-                                    break;
-                                case SET_INTERNAL_OPTION:
-                                {
-                                    InternalOptionType type =
-                                        (InternalOptionType)data.readInt32();
+                            if (mprotect((char*)params + allocSize - pageSize, pageSize,
+                                    PROT_NONE) != 0) {
+                                ALOGE("mprotect failed: %s", strerror(errno));
+                            } else {
+                                switch (code) {
+                                    case GET_PARAMETER:
+                                        err = getParameter(node, index, params, size);
+                                        break;
+                                    case SET_PARAMETER:
+                                        err = setParameter(node, index, params, size);
+                                        break;
+                                    case GET_CONFIG:
+                                        err = getConfig(node, index, params, size);
+                                        break;
+                                    case SET_CONFIG:
+                                        err = setConfig(node, index, params, size);
+                                        break;
+                                    case SET_INTERNAL_OPTION:
+                                    {
+                                        InternalOptionType type =
+                                            (InternalOptionType)data.readInt32();
 
-                                    err = setInternalOption(node, index, type, params, size);
-                                    break;
+                                        err = setInternalOption(node, index, type, params, size);
+                                        break;
+                                    }
+
+                                    default:
+                                        TRESPASS();
                                 }
-
-                                default:
-                                    TRESPASS();
                             }
                         }
                     }
diff --git a/media/libmedia/Visualizer.cpp b/media/libmedia/Visualizer.cpp
index 31e310b..37bf0bd 100644
--- a/media/libmedia/Visualizer.cpp
+++ b/media/libmedia/Visualizer.cpp
@@ -55,7 +55,7 @@
 {
     ALOGV("Visualizer::~Visualizer()");
     setEnabled(false);
-    setCaptureCallBack(NULL, NULL, 0, 0, true);
+    setCaptureCallBack(NULL, NULL, 0, 0);
 }
 
 status_t Visualizer::setEnabled(bool enabled)
@@ -77,13 +77,11 @@
 
     status_t status = AudioEffect::setEnabled(enabled);
 
-    if (status == NO_ERROR) {
-        if (t != 0) {
-            if (enabled) {
-                t->run("Visualizer");
-            } else {
-                t->requestExit();
-            }
+    if (t != 0) {
+        if (enabled && status == NO_ERROR) {
+            t->run("Visualizer");
+        } else {
+            t->requestExit();
         }
     }
 
@@ -95,14 +93,14 @@
 }
 
 status_t Visualizer::setCaptureCallBack(capture_cbk_t cbk, void* user, uint32_t flags,
-        uint32_t rate, bool force)
+        uint32_t rate)
 {
     if (rate > CAPTURE_RATE_MAX) {
         return BAD_VALUE;
     }
     Mutex::Autolock _l(mCaptureLock);
 
-    if (force || mEnabled) {
+    if (mEnabled) {
         return INVALID_OPERATION;
     }
 
diff --git a/media/libmedia/mediaplayer.cpp b/media/libmedia/mediaplayer.cpp
index 8725dfe..fbe749c 100644
--- a/media/libmedia/mediaplayer.cpp
+++ b/media/libmedia/mediaplayer.cpp
@@ -395,7 +395,9 @@
         return BAD_VALUE;
     }
     Mutex::Autolock _l(mLock);
-    if (mPlayer == 0) return INVALID_OPERATION;
+    if (mPlayer == 0 || (mCurrentState & MEDIA_PLAYER_STOPPED)) {
+        return INVALID_OPERATION;
+    }
 
     if (rate.mSpeed != 0.f && !(mCurrentState & MEDIA_PLAYER_STARTED)
             && (mCurrentState & (MEDIA_PLAYER_PREPARED | MEDIA_PLAYER_PAUSED
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index d3c6c5d..95c91d1 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -558,6 +558,12 @@
     mClients.remove(client);
 }
 
+bool MediaPlayerService::hasClient(wp<Client> client)
+{
+    Mutex::Autolock lock(mLock);
+    return mClients.indexOf(client) != NAME_NOT_FOUND;
+}
+
 MediaPlayerService::Client::Client(
         const sp<MediaPlayerService>& service, pid_t pid,
         int32_t connId, const sp<IMediaPlayerClient>& client,
@@ -1086,6 +1092,10 @@
     ALOGV("setNextPlayer");
     Mutex::Autolock l(mLock);
     sp<Client> c = static_cast<Client*>(player.get());
+    if (c != NULL && !mService->hasClient(c)) {
+      return BAD_VALUE;
+    }
+
     mNextClient = c;
 
     if (c != NULL) {
@@ -1845,7 +1855,7 @@
                 mCallbackData->setOutput(this);
             }
             delete newcbd;
-            return OK;
+            return updateTrack();
         }
     }
 
@@ -1867,17 +1877,26 @@
     mFrameSize = t->frameSize();
     mTrack = t;
 
+    return updateTrack();
+}
+
+status_t MediaPlayerService::AudioOutput::updateTrack() {
+    if (mTrack == NULL) {
+        return NO_ERROR;
+    }
+
     status_t res = NO_ERROR;
     // Note some output devices may give us a direct track even though we don't specify it.
     // Example: Line application b/17459982.
-    if ((t->getFlags() & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
-        res = t->setPlaybackRate(mPlaybackRate);
+    if ((mTrack->getFlags()
+            & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
+        res = mTrack->setPlaybackRate(mPlaybackRate);
         if (res == NO_ERROR) {
-            t->setAuxEffectSendLevel(mSendLevel);
-            res = t->attachAuxEffect(mAuxEffectId);
+            mTrack->setAuxEffectSendLevel(mSendLevel);
+            res = mTrack->attachAuxEffect(mAuxEffectId);
         }
     }
-    ALOGV("open() DONE status %d", res);
+    ALOGV("updateTrack() DONE status %d", res);
     return res;
 }
 
@@ -1929,6 +1948,7 @@
                     continue;
                 }
                 callbackData->mSwitching = true; // begin track switch
+                callbackData->setOutput(NULL);
 #else
                 // tryBeginTrackSwitch() returns false if the callback has the lock.
                 if (!mCallbackData->tryBeginTrackSwitch()) {
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 817d10f..601b046 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -135,6 +135,7 @@
                 int event, void *me, void *info);
                void             deleteRecycledTrack_l();
                void             close_l();
+           status_t             updateTrack();
 
         sp<AudioTrack>          mTrack;
         sp<AudioTrack>          mRecycledTrack;
@@ -226,6 +227,7 @@
     virtual status_t            dump(int fd, const Vector<String16>& args);
 
             void                removeClient(const wp<Client>& client);
+            bool                hasClient(wp<Client> client);
 
     enum {
         MEDIASERVER_PROCESS_DEATH = 0,
diff --git a/media/libmediaplayerservice/MediaRecorderClient.h b/media/libmediaplayerservice/MediaRecorderClient.h
index eceb653..b2d0f0e 100644
--- a/media/libmediaplayerservice/MediaRecorderClient.h
+++ b/media/libmediaplayerservice/MediaRecorderClient.h
@@ -22,7 +22,7 @@
 
 namespace android {
 
-class MediaRecorderBase;
+struct MediaRecorderBase;
 class MediaPlayerService;
 class ICameraRecordingProxy;
 class IGraphicBufferProducer;
diff --git a/media/libmediaplayerservice/StagefrightRecorder.cpp b/media/libmediaplayerservice/StagefrightRecorder.cpp
index 2d8d029..cdb0a7b 100644
--- a/media/libmediaplayerservice/StagefrightRecorder.cpp
+++ b/media/libmediaplayerservice/StagefrightRecorder.cpp
@@ -22,6 +22,8 @@
 #include "WebmWriter.h"
 #include "StagefrightRecorder.h"
 
+#include <algorithm>
+
 #include <android/hardware/ICamera.h>
 
 #include <binder/IPCThreadState.h>
@@ -57,6 +59,11 @@
 
 namespace android {
 
+static const float kTypicalDisplayRefreshingRate = 60.f;
+// display refresh rate drops on battery saver
+static const float kMinTypicalDisplayRefreshingRate = kTypicalDisplayRefreshingRate / 2;
+static const int kMaxNumVideoTemporalLayers = 8;
+
 // To collect the encoder usage for the battery app
 static void addBatteryData(uint32_t params) {
     sp<IBinder> binder =
@@ -820,6 +827,9 @@
             break;
     }
 
+    ALOGV("Recording frameRate: %d captureFps: %f",
+            mFrameRate, mCaptureFps);
+
     return status;
 }
 
@@ -1562,9 +1572,44 @@
         format->setInt32("level", mVideoEncoderLevel);
     }
 
+    uint32_t tsLayers = 1;
+    bool preferBFrames = true; // we like B-frames as it produces better quality per bitrate
     format->setInt32("priority", 0 /* realtime */);
+    float maxPlaybackFps = mFrameRate; // assume video is only played back at normal speed
+
     if (mCaptureFpsEnable) {
         format->setFloat("operating-rate", mCaptureFps);
+
+        // enable layering for all time lapse and high frame rate recordings
+        if (mFrameRate / mCaptureFps >= 1.9) { // time lapse
+            preferBFrames = false;
+            tsLayers = 2; // use at least two layers as resulting video will likely be sped up
+        } else if (mCaptureFps > maxPlaybackFps) { // slow-mo
+            maxPlaybackFps = mCaptureFps; // assume video will be played back at full capture speed
+            preferBFrames = false;
+        }
+    }
+
+    for (uint32_t tryLayers = 1; tryLayers <= kMaxNumVideoTemporalLayers; ++tryLayers) {
+        if (tryLayers > tsLayers) {
+            tsLayers = tryLayers;
+        }
+        // keep going until the base layer fps falls below the typical display refresh rate
+        float baseLayerFps = maxPlaybackFps / (1 << (tryLayers - 1));
+        if (baseLayerFps < kMinTypicalDisplayRefreshingRate / 0.9) {
+            break;
+        }
+    }
+
+    if (tsLayers > 1) {
+        uint32_t bLayers = std::min(2u, tsLayers - 1); // use up-to 2 B-layers
+        uint32_t pLayers = tsLayers - bLayers;
+        format->setString(
+                "ts-schema", AStringPrintf("android.generic.%u+%u", pLayers, bLayers));
+
+        // TODO: some encoders do not support B-frames with temporal layering, and we have a
+        // different preference based on use-case. We could move this into camera profiles.
+        format->setInt32("android._prefer-b-frames", preferBFrames);
     }
 
     if (mMetaDataStoredInVideoBuffers != kMetadataBufferTypeInvalid) {
@@ -1762,19 +1807,38 @@
         return OK;
     }
 
-    // 30 ms buffer to avoid timestamp overlap
-    mTotalPausedDurationUs += (systemTime() / 1000) - mPauseStartTimeUs - 30000;
+    int64_t bufferStartTimeUs = 0;
+    bool allSourcesStarted = true;
+    for (const auto &source : { mAudioEncoderSource, mVideoEncoderSource }) {
+        if (source == nullptr) {
+            continue;
+        }
+        int64_t timeUs = source->getFirstSampleSystemTimeUs();
+        if (timeUs < 0) {
+            allSourcesStarted = false;
+        }
+        if (bufferStartTimeUs < timeUs) {
+            bufferStartTimeUs = timeUs;
+        }
+    }
+
+    if (allSourcesStarted) {
+        if (mPauseStartTimeUs < bufferStartTimeUs) {
+            mPauseStartTimeUs = bufferStartTimeUs;
+        }
+        // 30 ms buffer to avoid timestamp overlap
+        mTotalPausedDurationUs += (systemTime() / 1000) - mPauseStartTimeUs - 30000;
+    }
     double timeOffset = -mTotalPausedDurationUs;
     if (mCaptureFpsEnable) {
         timeOffset *= mCaptureFps / mFrameRate;
     }
-    if (mAudioEncoderSource != NULL) {
-        mAudioEncoderSource->setInputBufferTimeOffset((int64_t)timeOffset);
-        mAudioEncoderSource->start();
-    }
-    if (mVideoEncoderSource != NULL) {
-        mVideoEncoderSource->setInputBufferTimeOffset((int64_t)timeOffset);
-        mVideoEncoderSource->start();
+    for (const auto &source : { mAudioEncoderSource, mVideoEncoderSource }) {
+        if (source == nullptr) {
+            continue;
+        }
+        source->setInputBufferTimeOffset((int64_t)timeOffset);
+        source->start();
     }
     mPauseStartTimeUs = 0;
 
diff --git a/media/libmediaplayerservice/nuplayer/GenericSource.cpp b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
index 60ead4a..57a7286 100644
--- a/media/libmediaplayerservice/nuplayer/GenericSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
@@ -691,6 +691,12 @@
           break;
       }
 
+      case kWhatGetTrackInfo:
+      {
+          onGetTrackInfo(msg);
+          break;
+      }
+
       case kWhatSelectTrack:
       {
           onSelectTrack(msg);
@@ -960,6 +966,34 @@
 }
 
 sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
+    sp<AMessage> msg = new AMessage(kWhatGetTrackInfo, this);
+    msg->setSize("trackIndex", trackIndex);
+
+    sp<AMessage> response;
+    sp<RefBase> format;
+    status_t err = msg->postAndAwaitResponse(&response);
+    if (err == OK && response != NULL) {
+        CHECK(response->findObject("format", &format));
+        return static_cast<AMessage*>(format.get());
+    } else {
+        return NULL;
+    }
+}
+
+void NuPlayer::GenericSource::onGetTrackInfo(const sp<AMessage>& msg) const {
+    size_t trackIndex;
+    CHECK(msg->findSize("trackIndex", &trackIndex));
+
+    sp<AMessage> response = new AMessage;
+    sp<AMessage> format = doGetTrackInfo(trackIndex);
+    response->setObject("format", format);
+
+    sp<AReplyToken> replyID;
+    CHECK(msg->senderAwaitsResponse(&replyID));
+    response->postReply(replyID);
+}
+
+sp<AMessage> NuPlayer::GenericSource::doGetTrackInfo(size_t trackIndex) const {
     size_t trackCount = mSources.size();
     if (trackIndex >= trackCount) {
         return NULL;
@@ -1298,6 +1332,13 @@
     }
 #endif
 
+    if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
+        int32_t layerId;
+        if (mb->meta_data()->findInt32(kKeyTemporalLayerId, &layerId)) {
+            meta->setInt32("temporal-layer-id", layerId);
+        }
+    }
+
     if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
         const char *mime;
         CHECK(mTimedTextTrack.mSource != NULL
@@ -1378,7 +1419,7 @@
             if (mIsWidevine) {
                 maxBuffers = 2;
             } else {
-                maxBuffers = 4;
+                maxBuffers = 8;  // too large of a number may influence seeks
             }
             break;
         case MEDIA_TRACK_TYPE_AUDIO:
@@ -1410,23 +1451,24 @@
     MediaSource::ReadOptions options;
 
     bool seeking = false;
-
     if (seekTimeUs >= 0) {
         options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
         seeking = true;
     }
 
-    if (mIsWidevine) {
+    const bool couldReadMultiple = (!mIsWidevine && track->mSource->supportReadMultiple());
+
+    if (mIsWidevine || couldReadMultiple) {
         options.setNonBlocking();
     }
 
-    bool couldReadMultiple = (!mIsWidevine && trackType == MEDIA_TRACK_TYPE_AUDIO);
     for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
         Vector<MediaBuffer *> mediaBuffers;
         status_t err = NO_ERROR;
 
-        if (!seeking && couldReadMultiple) {
-            err = track->mSource->readMultiple(&mediaBuffers, (maxBuffers - numBuffers));
+        if (couldReadMultiple) {
+            err = track->mSource->readMultiple(
+                    &mediaBuffers, maxBuffers - numBuffers, &options);
         } else {
             MediaBuffer *mbuf = NULL;
             err = track->mSource->read(&mbuf, &options);
@@ -1435,7 +1477,7 @@
             }
         }
 
-        options.clearSeekTo();
+        options.clearNonPersistent();
 
         size_t id = 0;
         size_t count = mediaBuffers.size();
diff --git a/media/libmediaplayerservice/nuplayer/GenericSource.h b/media/libmediaplayerservice/nuplayer/GenericSource.h
index 0957778..e92a2ae 100644
--- a/media/libmediaplayerservice/nuplayer/GenericSource.h
+++ b/media/libmediaplayerservice/nuplayer/GenericSource.h
@@ -251,6 +251,9 @@
     void onGetFormatMeta(const sp<AMessage>& msg) const;
     sp<MetaData> doGetFormatMeta(bool audio) const;
 
+    void onGetTrackInfo(const sp<AMessage>& msg) const;
+    sp<AMessage> doGetTrackInfo(size_t trackIndex) const;
+
     void onGetSelectedTrack(const sp<AMessage>& msg) const;
     ssize_t doGetSelectedTrack(media_track_type type) const;
 
diff --git a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp
index 3fffdc1a..5027e01 100644
--- a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp
@@ -30,6 +30,7 @@
 #include <media/stagefright/MediaErrors.h>
 #include <media/stagefright/MetaData.h>
 #include <media/stagefright/MediaDefs.h>
+#include <media/stagefright/Utils.h>
 
 namespace android {
 
@@ -100,26 +101,38 @@
 void NuPlayer::HTTPLiveSource::start() {
 }
 
-sp<AMessage> NuPlayer::HTTPLiveSource::getFormat(bool audio) {
-    sp<AMessage> format;
-    status_t err = -EWOULDBLOCK;
+sp<MetaData> NuPlayer::HTTPLiveSource::getFormatMeta(bool audio) {
+    sp<MetaData> meta;
     if (mLiveSession != NULL) {
-        err = mLiveSession->getStreamFormat(
+        mLiveSession->getStreamFormatMeta(
                 audio ? LiveSession::STREAMTYPE_AUDIO
                       : LiveSession::STREAMTYPE_VIDEO,
-                &format);
+                &meta);
     }
 
+    return meta;
+}
+
+sp<AMessage> NuPlayer::HTTPLiveSource::getFormat(bool audio) {
+    sp<MetaData> meta;
+    status_t err = -EWOULDBLOCK;
+    if (mLiveSession != NULL) {
+        err = mLiveSession->getStreamFormatMeta(
+                audio ? LiveSession::STREAMTYPE_AUDIO
+                      : LiveSession::STREAMTYPE_VIDEO,
+                &meta);
+    }
+
+    sp<AMessage> format;
     if (err == -EWOULDBLOCK) {
         format = new AMessage();
         format->setInt32("err", err);
         return format;
     }
 
-    if (err != OK) {
+    if (err != OK || convertMetaDataToMessage(meta, &format) != OK) {
         return NULL;
     }
-
     return format;
 }
 
diff --git a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h
index 9e0ec2f..574937d 100644
--- a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h
+++ b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h
@@ -38,6 +38,7 @@
     virtual void start();
 
     virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
+    virtual sp<MetaData> getFormatMeta(bool audio);
     virtual sp<AMessage> getFormat(bool audio);
 
     virtual status_t feedMoreTSData();
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index 258bc11..53a1843 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -784,12 +784,9 @@
             }
 
             if (mVideoDecoder != NULL) {
-                float rate = getFrameRate();
-                if (rate > 0) {
-                    sp<AMessage> params = new AMessage();
-                    params->setFloat("operating-rate", rate * mPlaybackSettings.mSpeed);
-                    mVideoDecoder->setParameters(params);
-                }
+                sp<AMessage> params = new AMessage();
+                params->setFloat("playback-speed", mPlaybackSettings.mSpeed);
+                mVideoDecoder->setParameters(params);
             }
 
             sp<AMessage> response = new AMessage;
@@ -1341,17 +1338,26 @@
         flags |= Renderer::FLAG_REAL_TIME;
     }
 
+    bool hasAudio = (mSource->getFormat(true /* audio */) != NULL);
+    bool hasVideo = (mSource->getFormat(false /* audio */) != NULL);
+    if (!hasAudio && !hasVideo) {
+        ALOGE("no metadata for either audio or video source");
+        mSource->stop();
+        mSourceStarted = false;
+        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, ERROR_MALFORMED);
+        return;
+    }
+    ALOGV_IF(!hasAudio, "no metadata for audio source");  // video only stream
+
     sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
-    ALOGV_IF(audioMeta == NULL, "no metadata for audio source");  // video only stream
+
     audio_stream_type_t streamType = AUDIO_STREAM_MUSIC;
     if (mAudioSink != NULL) {
         streamType = mAudioSink->getAudioStreamType();
     }
 
-    sp<AMessage> videoFormat = mSource->getFormat(false /* audio */);
-
     mOffloadAudio =
-        canOffloadStream(audioMeta, (videoFormat != NULL), mSource->isStreaming(), streamType)
+        canOffloadStream(audioMeta, hasVideo, mSource->isStreaming(), streamType)
                 && (mPlaybackSettings.mSpeed == 1.f && mPlaybackSettings.mPitch == 1.f);
     if (mOffloadAudio) {
         flags |= Renderer::FLAG_OFFLOAD_AUDIO;
@@ -1680,6 +1686,27 @@
             return err;
         }
     }
+
+    if (!audio) {
+        sp<AMessage> params = new AMessage();
+        float rate = getFrameRate();
+        if (rate > 0) {
+            params->setFloat("frame-rate-total", rate);
+        }
+
+        sp<MetaData> fileMeta = getFileMeta();
+        if (fileMeta != NULL) {
+            int32_t videoTemporalLayerCount;
+            if (fileMeta->findInt32(kKeyTemporalLayerCount, &videoTemporalLayerCount)
+                    && videoTemporalLayerCount > 0) {
+                params->setInt32("temporal-layer-count", videoTemporalLayerCount);
+            }
+        }
+
+        if (params->countEntries() > 0) {
+            (*decoder)->setParameters(params);
+        }
+    }
     return OK;
 }
 
@@ -1691,6 +1718,16 @@
         notifyListener(MEDIA_SET_VIDEO_SIZE, 0, 0);
         return;
     }
+    int32_t err = OK;
+    inputFormat->findInt32("err", &err);
+    if (err == -EWOULDBLOCK) {
+        ALOGW("Video meta is not available yet!");
+        return;
+    }
+    if (err != OK) {
+        ALOGW("Something is wrong with video meta!");
+        return;
+    }
 
     int32_t displayWidth, displayHeight;
     if (outputFormat != NULL) {
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
index 4678956..cf38efc 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
@@ -19,6 +19,8 @@
 #include <utils/Log.h>
 #include <inttypes.h>
 
+#include <algorithm>
+
 #include "NuPlayerCCDecoder.h"
 #include "NuPlayerDecoder.h"
 #include "NuPlayerRenderer.h"
@@ -41,6 +43,12 @@
 
 namespace android {
 
+static float kDisplayRefreshingRate = 60.f; // TODO: get this from the display
+
+// The default total video frame rate of a stream when that info is not available from
+// the source.
+static float kDefaultVideoFrameRateTotal = 30.f;
+
 static inline bool getAudioDeepBufferSetting() {
     return property_get_bool("media.stagefright.audio.deep", false /* default_value */);
 }
@@ -69,11 +77,17 @@
       mIsSecure(false),
       mFormatChangePending(false),
       mTimeChangePending(false),
+      mFrameRateTotal(kDefaultVideoFrameRateTotal),
+      mPlaybackSpeed(1.0f),
+      mNumVideoTemporalLayerTotal(1), // decode all layers
+      mNumVideoTemporalLayerAllowed(1),
+      mCurrentMaxVideoTemporalLayerId(0),
       mResumePending(false),
       mComponentName("decoder") {
     mCodecLooper = new ALooper;
     mCodecLooper->setName("NPDecoder-CL");
     mCodecLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
+    mVideoTemporalLayerAggregateFps[0] = mFrameRateTotal;
 }
 
 NuPlayer::Decoder::~Decoder() {
@@ -329,11 +343,68 @@
 }
 
 void NuPlayer::Decoder::onSetParameters(const sp<AMessage> &params) {
-    if (mCodec == NULL) {
-        ALOGW("onSetParameters called before codec is created.");
-        return;
+    bool needAdjustLayers = false;
+    float frameRateTotal;
+    if (params->findFloat("frame-rate-total", &frameRateTotal)
+            && mFrameRateTotal != frameRateTotal) {
+        needAdjustLayers = true;
+        mFrameRateTotal = frameRateTotal;
     }
-    mCodec->setParameters(params);
+
+    int32_t numVideoTemporalLayerTotal;
+    if (params->findInt32("temporal-layer-count", &numVideoTemporalLayerTotal)
+            && numVideoTemporalLayerTotal >= 0
+            && numVideoTemporalLayerTotal <= kMaxNumVideoTemporalLayers
+            && mNumVideoTemporalLayerTotal != numVideoTemporalLayerTotal) {
+        needAdjustLayers = true;
+        mNumVideoTemporalLayerTotal = std::max(numVideoTemporalLayerTotal, 1);
+    }
+
+    if (needAdjustLayers && mNumVideoTemporalLayerTotal > 1) {
+        // TODO: For now, layer fps is calculated for some specific architectures.
+        // But it really should be extracted from the stream.
+        mVideoTemporalLayerAggregateFps[0] =
+            mFrameRateTotal / (float)(1ll << (mNumVideoTemporalLayerTotal - 1));
+        for (int32_t i = 1; i < mNumVideoTemporalLayerTotal; ++i) {
+            mVideoTemporalLayerAggregateFps[i] =
+                mFrameRateTotal / (float)(1ll << (mNumVideoTemporalLayerTotal - i))
+                + mVideoTemporalLayerAggregateFps[i - 1];
+        }
+    }
+
+    float playbackSpeed;
+    if (params->findFloat("playback-speed", &playbackSpeed)
+            && mPlaybackSpeed != playbackSpeed) {
+        needAdjustLayers = true;
+        mPlaybackSpeed = playbackSpeed;
+    }
+
+    if (needAdjustLayers) {
+        float decodeFrameRate = mFrameRateTotal;
+        // enable temporal layering optimization only if we know the layering depth
+        if (mNumVideoTemporalLayerTotal > 1) {
+            int32_t layerId;
+            for (layerId = 0; layerId < mNumVideoTemporalLayerTotal - 1; ++layerId) {
+                if (mVideoTemporalLayerAggregateFps[layerId] * mPlaybackSpeed
+                        >= kDisplayRefreshingRate * 0.9) {
+                    break;
+                }
+            }
+            mNumVideoTemporalLayerAllowed = layerId + 1;
+            decodeFrameRate = mVideoTemporalLayerAggregateFps[layerId];
+        }
+        ALOGV("onSetParameters: allowed layers=%d, decodeFps=%g",
+                mNumVideoTemporalLayerAllowed, decodeFrameRate);
+
+        if (mCodec == NULL) {
+            ALOGW("onSetParameters called before codec is created.");
+            return;
+        }
+
+        sp<AMessage> codecParams = new AMessage();
+        codecParams->setFloat("operating-rate", decodeFrameRate * mPlaybackSpeed);
+        mCodec->setParameters(codecParams);
+    }
 }
 
 void NuPlayer::Decoder::onSetRenderer(const sp<Renderer> &renderer) {
@@ -742,13 +813,33 @@
         }
 
         dropAccessUnit = false;
-        if (!mIsAudio
-                && !mIsSecure
-                && mRenderer->getVideoLateByUs() > 100000ll
-                && mIsVideoAVC
-                && !IsAVCReferenceFrame(accessUnit)) {
-            dropAccessUnit = true;
-            ++mNumInputFramesDropped;
+        if (!mIsAudio && !mIsSecure) {
+            int32_t layerId = 0;
+            bool haveLayerId = accessUnit->meta()->findInt32("temporal-layer-id", &layerId);
+            if (mRenderer->getVideoLateByUs() > 100000ll
+                    && mIsVideoAVC
+                    && !IsAVCReferenceFrame(accessUnit)) {
+                dropAccessUnit = true;
+            } else if (haveLayerId && mNumVideoTemporalLayerTotal > 1) {
+                // Add only one layer each time.
+                if (layerId > mCurrentMaxVideoTemporalLayerId + 1
+                        || layerId >= mNumVideoTemporalLayerAllowed) {
+                    dropAccessUnit = true;
+                    ALOGV("dropping layer(%d), speed=%g, allowed layer count=%d, max layerId=%d",
+                            layerId, mPlaybackSpeed, mNumVideoTemporalLayerAllowed,
+                            mCurrentMaxVideoTemporalLayerId);
+                } else if (layerId > mCurrentMaxVideoTemporalLayerId) {
+                    mCurrentMaxVideoTemporalLayerId = layerId;
+                } else if (layerId == 0 && mNumVideoTemporalLayerTotal > 1 && IsIDR(accessUnit)) {
+                    mCurrentMaxVideoTemporalLayerId = mNumVideoTemporalLayerTotal - 1;
+                }
+            }
+            if (dropAccessUnit) {
+                if (layerId <= mCurrentMaxVideoTemporalLayerId && layerId > 0) {
+                    mCurrentMaxVideoTemporalLayerId = layerId - 1;
+                }
+                ++mNumInputFramesDropped;
+            }
         }
     } while (dropAccessUnit);
 
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.h b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.h
index ae08b4b..0c619ed 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.h
@@ -57,6 +57,10 @@
         kWhatSetVideoSurface     = 'sSur'
     };
 
+    enum {
+        kMaxNumVideoTemporalLayers = 32,
+    };
+
     sp<Surface> mSurface;
 
     sp<Source> mSource;
@@ -90,6 +94,12 @@
     bool mIsSecure;
     bool mFormatChangePending;
     bool mTimeChangePending;
+    float mFrameRateTotal;
+    float mPlaybackSpeed;
+    int32_t mNumVideoTemporalLayerTotal;
+    int32_t mNumVideoTemporalLayerAllowed;
+    int32_t mCurrentMaxVideoTemporalLayerId;
+    float mVideoTemporalLayerAggregateFps[kMaxNumVideoTemporalLayers];
 
     bool mResumePending;
     AString mComponentName;
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
index b47a4f1..b742762 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
@@ -141,6 +141,17 @@
         mAudioSink->flush();
         mAudioSink->close();
     }
+
+    // Try to avoid racing condition in case callback is still on.
+    Mutex::Autolock autoLock(mLock);
+    mUseAudioCallback = false;
+    flushQueue(&mAudioQueue);
+    flushQueue(&mVideoQueue);
+    mWakeLock.clear();
+    mMediaClock.clear();
+    mVideoScheduler.clear();
+    mNotify.clear();
+    mAudioSink.clear();
 }
 
 void NuPlayer::Renderer::queueBuffer(
@@ -744,7 +755,7 @@
         case MediaPlayerBase::AudioSink::CB_EVENT_STREAM_END:
         {
             ALOGV("AudioSink::CB_EVENT_STREAM_END");
-            me->notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
+            me->notifyEOSCallback();
             break;
         }
 
@@ -759,6 +770,16 @@
     return 0;
 }
 
+void NuPlayer::Renderer::notifyEOSCallback() {
+    Mutex::Autolock autoLock(mLock);
+
+    if (!mUseAudioCallback) {
+        return;
+    }
+
+    notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
+}
+
 size_t NuPlayer::Renderer::fillAudioBuffer(void *buffer, size_t size) {
     Mutex::Autolock autoLock(mLock);
 
@@ -1190,8 +1211,10 @@
             msg->setWhat(kWhatPostDrainVideoQueue);
             msg->post(postDelayUs);
             mVideoScheduler->restart();
-            ALOGI("possible video time jump of %dms or uninitialized media clock, retrying in %dms",
-                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
+            ALOGI("possible video time jump of %dms (%lld : %lld) or uninitialized media clock,"
+                    " retrying in %dms",
+                    (int)(delayUs / 1000), (long long)mediaTimeUs,
+                    (long long)mAudioFirstAnchorTimeMediaUs, (int)(postDelayUs / 1000));
             mDrainVideoQueuePending = true;
             return;
         }
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
index 004e21c..fe7f8fa 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.h
@@ -212,6 +212,7 @@
     status_t getCurrentPositionFromAnchor(
             int64_t *mediaUs, int64_t nowUs, bool allowPastQueuedVideo = false);
 
+    void notifyEOSCallback();
     size_t fillAudioBuffer(void *buffer, size_t size);
 
     bool onDrainAudioQueue();
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
index 3a96138..438db0c 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
@@ -77,7 +77,11 @@
     // an error or ERROR_END_OF_STREAM if not.
     virtual status_t feedMoreTSData() = 0;
 
+    // Returns non-NULL format when the specified track exists.
+    // When the format has "err" set to -EWOULDBLOCK, source needs more time to get valid meta data.
+    // Returns NULL if the specified track doesn't exist or is invalid;
     virtual sp<AMessage> getFormat(bool audio);
+
     virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
     virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
 
diff --git a/media/libmediaplayerservice/nuplayer/RTSPSource.cpp b/media/libmediaplayerservice/nuplayer/RTSPSource.cpp
index 1b7dff5..c4e5df7 100644
--- a/media/libmediaplayerservice/nuplayer/RTSPSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/RTSPSource.cpp
@@ -58,6 +58,7 @@
       mDisconnectReplyID(0),
       mBuffering(false),
       mInPreparationPhase(true),
+      mEOSPending(false),
       mSeekGeneration(0),
       mEOSTimeoutAudio(0),
       mEOSTimeoutVideo(0) {
@@ -200,34 +201,28 @@
     status_t finalResult;
     if (!source->hasBufferAvailable(&finalResult)) {
         if (finalResult == OK) {
-            int64_t mediaDurationUs = 0;
-            getDuration(&mediaDurationUs);
-            sp<AnotherPacketSource> otherSource = getSource(!audio);
-            status_t otherFinalResult;
 
-            // If other source already signaled EOS, this source should also signal EOS
-            if (otherSource != NULL &&
-                    !otherSource->hasBufferAvailable(&otherFinalResult) &&
-                    otherFinalResult == ERROR_END_OF_STREAM) {
-                source->signalEOS(ERROR_END_OF_STREAM);
+            // If other source already signaled EOS, this source should also return EOS
+            if (sourceReachedEOS(!audio)) {
                 return ERROR_END_OF_STREAM;
             }
 
             // If this source has detected near end, give it some time to retrieve more
-            // data before signaling EOS
+            // data before returning EOS
+            int64_t mediaDurationUs = 0;
+            getDuration(&mediaDurationUs);
             if (source->isFinished(mediaDurationUs)) {
                 int64_t eosTimeout = audio ? mEOSTimeoutAudio : mEOSTimeoutVideo;
                 if (eosTimeout == 0) {
                     setEOSTimeout(audio, ALooper::GetNowUs());
                 } else if ((ALooper::GetNowUs() - eosTimeout) > kNearEOSTimeoutUs) {
                     setEOSTimeout(audio, 0);
-                    source->signalEOS(ERROR_END_OF_STREAM);
                     return ERROR_END_OF_STREAM;
                 }
                 return -EWOULDBLOCK;
             }
 
-            if (!(otherSource != NULL && otherSource->isFinished(mediaDurationUs))) {
+            if (!sourceNearEOS(!audio)) {
                 // We should not enter buffering mode
                 // if any of the sources already have detected EOS.
                 startBufferingIfNecessary();
@@ -306,6 +301,7 @@
 
     mState = SEEKING;
     mHandler->seek(seekTimeUs);
+    mEOSPending = false;
 }
 
 void NuPlayer::RTSPSource::schedulePollBuffering() {
@@ -314,14 +310,20 @@
 }
 
 void NuPlayer::RTSPSource::checkBuffering(
-        bool *prepared, bool *underflow, bool *overflow, bool *startServer) {
+        bool *prepared, bool *underflow, bool *overflow, bool *startServer, bool *finished) {
     size_t numTracks = mTracks.size();
-    size_t preparedCount, underflowCount, overflowCount, startCount;
-    preparedCount = underflowCount = overflowCount = startCount = 0;
-    for (size_t i = 0; i < numTracks; ++i) {
+    size_t preparedCount, underflowCount, overflowCount, startCount, finishedCount;
+    preparedCount = underflowCount = overflowCount = startCount = finishedCount = 0;
+
+    size_t count = numTracks;
+    for (size_t i = 0; i < count; ++i) {
         status_t finalResult;
         TrackInfo *info = &mTracks.editItemAt(i);
         sp<AnotherPacketSource> src = info->mSource;
+        if (src == NULL) {
+            --numTracks;
+            continue;
+        }
         int64_t bufferedDurationUs = src->getBufferedDurationUs(&finalResult);
 
         // isFinished when duration is 0 checks for EOS result only
@@ -331,6 +333,7 @@
 
         if (src->isFinished(/* duration */ 0)) {
             ++overflowCount;
+            ++finishedCount;
         } else {
             if (bufferedDurationUs < kUnderflowMarkUs) {
                 ++underflowCount;
@@ -348,11 +351,12 @@
     *underflow   = (underflowCount > 0);
     *overflow    = (overflowCount == numTracks);
     *startServer = (startCount > 0);
+    *finished    = (finishedCount > 0);
 }
 
 void NuPlayer::RTSPSource::onPollBuffering() {
-    bool prepared, underflow, overflow, startServer;
-    checkBuffering(&prepared, &underflow, &overflow, &startServer);
+    bool prepared, underflow, overflow, startServer, finished;
+    checkBuffering(&prepared, &underflow, &overflow, &startServer, &finished);
 
     if (prepared && mInPreparationPhase) {
         mInPreparationPhase = false;
@@ -363,8 +367,11 @@
         startBufferingIfNecessary();
     }
 
-    if (overflow && mHandler != NULL) {
+    if (haveSufficientDataOnAllTracks()) {
         stopBufferingIfNecessary();
+    }
+
+    if (overflow && mHandler != NULL) {
         mHandler->pause();
     }
 
@@ -372,9 +379,72 @@
         mHandler->resume();
     }
 
+    if (finished && mHandler != NULL) {
+        mHandler->cancelAccessUnitTimeoutCheck();
+    }
+
     schedulePollBuffering();
 }
 
+void NuPlayer::RTSPSource::signalSourceEOS(status_t result) {
+    const bool audio = true;
+    const bool video = false;
+
+    sp<AnotherPacketSource> source = getSource(audio);
+    if (source != NULL) {
+        source->signalEOS(result);
+    }
+
+    source = getSource(video);
+    if (source != NULL) {
+        source->signalEOS(result);
+    }
+}
+
+bool NuPlayer::RTSPSource::sourceReachedEOS(bool audio) {
+    sp<AnotherPacketSource> source = getSource(audio);
+    status_t finalResult;
+    return (source != NULL &&
+            !source->hasBufferAvailable(&finalResult) &&
+            finalResult == ERROR_END_OF_STREAM);
+}
+
+bool NuPlayer::RTSPSource::sourceNearEOS(bool audio) {
+    sp<AnotherPacketSource> source = getSource(audio);
+    int64_t mediaDurationUs = 0;
+    getDuration(&mediaDurationUs);
+    return (source != NULL && source->isFinished(mediaDurationUs));
+}
+
+void NuPlayer::RTSPSource::onSignalEOS(const sp<AMessage> &msg) {
+    int32_t generation;
+    CHECK(msg->findInt32("generation", &generation));
+
+    if (generation != mSeekGeneration) {
+        return;
+    }
+
+    if (mEOSPending) {
+        signalSourceEOS(ERROR_END_OF_STREAM);
+        mEOSPending = false;
+    }
+}
+
+void NuPlayer::RTSPSource::postSourceEOSIfNecessary() {
+    const bool audio = true;
+    const bool video = false;
+    // If a source has detected near end, give it some time to retrieve more
+    // data before signaling EOS
+    if (sourceNearEOS(audio) || sourceNearEOS(video)) {
+        if (!mEOSPending) {
+            sp<AMessage> msg = new AMessage(kWhatSignalEOS, this);
+            msg->setInt32("generation", mSeekGeneration);
+            msg->post(kNearEOSTimeoutUs);
+            mEOSPending = true;
+        }
+    }
+}
+
 void NuPlayer::RTSPSource::onMessageReceived(const sp<AMessage> &msg) {
     if (msg->what() == kWhatDisconnect) {
         sp<AReplyToken> replyID;
@@ -402,6 +472,9 @@
     } else if (msg->what() == kWhatPollBuffering) {
         onPollBuffering();
         return;
+    } else if (msg->what() == kWhatSignalEOS) {
+        onSignalEOS(msg);
+        return;
     }
 
     CHECK_EQ(msg->what(), (int)kWhatNotify);
@@ -511,16 +584,10 @@
                 }
 
                 if (err != OK) {
-                    sp<AnotherPacketSource> source = getSource(false /* audio */);
-                    if (source != NULL) {
-                        source->signalEOS(err);
-                    }
-
-                    source = getSource(true /* audio */);
-                    if (source != NULL) {
-                        source->signalEOS(err);
-                    }
+                    signalSourceEOS(err);
                 }
+
+                postSourceEOSIfNecessary();
                 break;
             }
 
@@ -548,6 +615,7 @@
 
                 source->queueAccessUnit(accessUnit);
             }
+            postSourceEOSIfNecessary();
             break;
         }
 
@@ -558,17 +626,7 @@
             CHECK_NE(finalResult, (status_t)OK);
 
             if (mTSParser != NULL) {
-                sp<AnotherPacketSource> source = getSource(false /* audio */);
-                if (source != NULL) {
-                    source->signalEOS(finalResult);
-                }
-
-                source = getSource(true /* audio */);
-                if (source != NULL) {
-                    source->signalEOS(finalResult);
-                }
-
-                return;
+                signalSourceEOS(finalResult);
             }
 
             size_t trackIndex;
diff --git a/media/libmediaplayerservice/nuplayer/RTSPSource.h b/media/libmediaplayerservice/nuplayer/RTSPSource.h
index a6a7644..c7834ef 100644
--- a/media/libmediaplayerservice/nuplayer/RTSPSource.h
+++ b/media/libmediaplayerservice/nuplayer/RTSPSource.h
@@ -64,6 +64,7 @@
         kWhatDisconnect      = 'disc',
         kWhatPerformSeek     = 'seek',
         kWhatPollBuffering   = 'poll',
+        kWhatSignalEOS       = 'eos ',
     };
 
     enum State {
@@ -106,6 +107,7 @@
     Mutex mBufferingLock;
     bool mBuffering;
     bool mInPreparationPhase;
+    bool mEOSPending;
 
     sp<ALooper> mLooper;
     sp<MyHandler> mHandler;
@@ -133,7 +135,12 @@
 
     void performSeek(int64_t seekTimeUs);
     void schedulePollBuffering();
-    void checkBuffering(bool *prepared, bool *underflow, bool *overflow, bool *startServer);
+    void checkBuffering(
+            bool *prepared,
+            bool *underflow,
+            bool *overflow,
+            bool *startServer,
+            bool *finished);
     void onPollBuffering();
 
     bool haveSufficientDataOnAllTracks();
@@ -144,6 +151,13 @@
     bool stopBufferingIfNecessary();
     void finishSeek(status_t err);
 
+    void postSourceEOSIfNecessary();
+    void signalSourceEOS(status_t result);
+    void onSignalEOS(const sp<AMessage> &msg);
+
+    bool sourceNearEOS(bool audio);
+    bool sourceReachedEOS(bool audio);
+
     DISALLOW_EVIL_CONSTRUCTORS(RTSPSource);
 };
 
diff --git a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
index 47ec3e9..d6b1e8c 100644
--- a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
@@ -233,8 +233,8 @@
         return format;
     }
     status_t err = convertMetaDataToMessage(meta, &format);
-    if (err != OK) {
-        format->setInt32("err", err);
+    if (err != OK) { // format may have been cleared on error
+        return NULL;
     }
     return format;
 }
diff --git a/media/libstagefright/AACExtractor.cpp b/media/libstagefright/AACExtractor.cpp
index 19efc53..7449aa7 100644
--- a/media/libstagefright/AACExtractor.cpp
+++ b/media/libstagefright/AACExtractor.cpp
@@ -174,7 +174,9 @@
     if (mDataSource->getSize(&streamSize) == OK) {
          while (offset < streamSize) {
             if ((frameSize = getAdtsFrameLength(source, offset, NULL)) == 0) {
-                return;
+                ALOGW("prematured AAC stream (%lld vs %lld)",
+                        (long long)offset, (long long)streamSize);
+                break;
             }
 
             mOffsetVector.push(offset);
diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index 07f5960..e7057ce 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -675,7 +675,10 @@
     }
 
     int usageBits = 0;
-    status_t err = setupNativeWindowSizeFormatAndUsage(nativeWindow, &usageBits);
+    // no need to reconnect as we will not dequeue all buffers
+    status_t err = setupNativeWindowSizeFormatAndUsage(
+            nativeWindow, &usageBits,
+            !storingMetadataInDecodedBuffers() || mLegacyAdaptiveExperiment /* reconnect */);
     if (err != OK) {
         return err;
     }
@@ -949,7 +952,8 @@
 }
 
 status_t ACodec::setupNativeWindowSizeFormatAndUsage(
-        ANativeWindow *nativeWindow /* nonnull */, int *finalUsage /* nonnull */) {
+        ANativeWindow *nativeWindow /* nonnull */, int *finalUsage /* nonnull */,
+        bool reconnect) {
     OMX_PARAM_PORTDEFINITIONTYPE def;
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexOutput;
@@ -987,12 +991,14 @@
             def.format.video.nFrameHeight,
             def.format.video.eColorFormat,
             mRotationDegrees,
-            usage);
+            usage,
+            reconnect);
 }
 
 status_t ACodec::configureOutputBuffersFromNativeWindow(
         OMX_U32 *bufferCount, OMX_U32 *bufferSize,
-        OMX_U32 *minUndequeuedBuffers) {
+        OMX_U32 *minUndequeuedBuffers, bool preregister) {
+
     OMX_PARAM_PORTDEFINITIONTYPE def;
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexOutput;
@@ -1001,7 +1007,8 @@
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
 
     if (err == OK) {
-        err = setupNativeWindowSizeFormatAndUsage(mNativeWindow.get(), &mNativeWindowUsageBits);
+        err = setupNativeWindowSizeFormatAndUsage(
+                mNativeWindow.get(), &mNativeWindowUsageBits, preregister /* reconnect */);
     }
     if (err != OK) {
         mNativeWindowUsageBits = 0;
@@ -1083,7 +1090,7 @@
 status_t ACodec::allocateOutputBuffersFromNativeWindow() {
     OMX_U32 bufferCount, bufferSize, minUndequeuedBuffers;
     status_t err = configureOutputBuffersFromNativeWindow(
-            &bufferCount, &bufferSize, &minUndequeuedBuffers);
+            &bufferCount, &bufferSize, &minUndequeuedBuffers, true /* preregister */);
     if (err != 0)
         return err;
     mNumUndequeuedBuffers = minUndequeuedBuffers;
@@ -1169,7 +1176,8 @@
 status_t ACodec::allocateOutputMetadataBuffers() {
     OMX_U32 bufferCount, bufferSize, minUndequeuedBuffers;
     status_t err = configureOutputBuffersFromNativeWindow(
-            &bufferCount, &bufferSize, &minUndequeuedBuffers);
+            &bufferCount, &bufferSize, &minUndequeuedBuffers,
+            mLegacyAdaptiveExperiment /* preregister */);
     if (err != 0)
         return err;
     mNumUndequeuedBuffers = minUndequeuedBuffers;
@@ -2455,6 +2463,109 @@
     return OK;
 }
 
+status_t ACodec::configureTemporalLayers(
+        const sp<AMessage> &msg, bool inConfigure, sp<AMessage> &outputFormat) {
+    if (!mIsVideo || !mIsEncoder) {
+        return INVALID_OPERATION;
+    }
+
+    AString tsSchema;
+    if (!msg->findString("ts-schema", &tsSchema)) {
+        return OK;
+    }
+
+    unsigned int numLayers = 0;
+    unsigned int numBLayers = 0;
+    int tags;
+    char dummy;
+    OMX_VIDEO_ANDROID_TEMPORALLAYERINGPATTERNTYPE pattern =
+        OMX_VIDEO_AndroidTemporalLayeringPatternNone;
+    if (sscanf(tsSchema.c_str(), "webrtc.vp8.%u-layer%c", &numLayers, &dummy) == 1
+            && numLayers > 0) {
+        pattern = OMX_VIDEO_AndroidTemporalLayeringPatternWebRTC;
+    } else if ((tags = sscanf(tsSchema.c_str(), "android.generic.%u%c%u%c",
+                    &numLayers, &dummy, &numBLayers, &dummy))
+            && (tags == 1 || (tags == 3 && dummy == '+'))
+            && numLayers > 0 && numLayers < UINT32_MAX - numBLayers) {
+        numLayers += numBLayers;
+        pattern = OMX_VIDEO_AndroidTemporalLayeringPatternAndroid;
+    } else {
+        ALOGI("Ignoring unsupported ts-schema [%s]", tsSchema.c_str());
+        return BAD_VALUE;
+    }
+
+    OMX_VIDEO_PARAM_ANDROID_TEMPORALLAYERINGTYPE layerParams;
+    InitOMXParams(&layerParams);
+    layerParams.nPortIndex = kPortIndexOutput;
+
+    status_t err = mOMX->getParameter(
+        mNode, (OMX_INDEXTYPE)OMX_IndexParamAndroidVideoTemporalLayering,
+        &layerParams, sizeof(layerParams));
+
+    if (err != OK) {
+        return err;
+    } else if (!(layerParams.eSupportedPatterns & pattern)) {
+        return BAD_VALUE;
+    }
+
+    numLayers = min(numLayers, layerParams.nLayerCountMax);
+    numBLayers = min(numBLayers, layerParams.nBLayerCountMax);
+
+    if (!inConfigure) {
+        OMX_VIDEO_CONFIG_ANDROID_TEMPORALLAYERINGTYPE layerConfig;
+        InitOMXParams(&layerConfig);
+        layerConfig.nPortIndex = kPortIndexOutput;
+        layerConfig.ePattern = pattern;
+        layerConfig.nPLayerCountActual = numLayers - numBLayers;
+        layerConfig.nBLayerCountActual = numBLayers;
+        layerConfig.bBitrateRatiosSpecified = OMX_FALSE;
+
+        err = mOMX->setConfig(
+                mNode, (OMX_INDEXTYPE)OMX_IndexConfigAndroidVideoTemporalLayering,
+                &layerConfig, sizeof(layerConfig));
+    } else {
+        layerParams.ePattern = pattern;
+        layerParams.nPLayerCountActual = numLayers - numBLayers;
+        layerParams.nBLayerCountActual = numBLayers;
+        layerParams.bBitrateRatiosSpecified = OMX_FALSE;
+
+        err = mOMX->setParameter(
+                mNode, (OMX_INDEXTYPE)OMX_IndexParamAndroidVideoTemporalLayering,
+                &layerParams, sizeof(layerParams));
+    }
+
+    AString configSchema;
+    if (pattern == OMX_VIDEO_AndroidTemporalLayeringPatternAndroid) {
+        configSchema = AStringPrintf("android.generic.%u+%u", numLayers - numBLayers, numBLayers);
+    } else if (pattern == OMX_VIDEO_AndroidTemporalLayeringPatternWebRTC) {
+        configSchema = AStringPrintf("webrtc.vp8.%u", numLayers);
+    }
+
+    if (err != OK) {
+        ALOGW("Failed to set temporal layers to %s (requested %s)",
+                configSchema.c_str(), tsSchema.c_str());
+        return err;
+    }
+
+    err = mOMX->getParameter(
+            mNode, (OMX_INDEXTYPE)OMX_IndexParamAndroidVideoTemporalLayering,
+            &layerParams, sizeof(layerParams));
+
+    if (err == OK) {
+        ALOGD("Temporal layers requested:%s configured:%s got:%s(%u: P=%u, B=%u)",
+                tsSchema.c_str(), configSchema.c_str(),
+                asString(layerParams.ePattern), layerParams.ePattern,
+                layerParams.nPLayerCountActual, layerParams.nBLayerCountActual);
+
+        if (outputFormat.get() == mOutputFormat.get()) {
+            mOutputFormat = mOutputFormat->dup(); // trigger an output format change event
+        }
+        // assume we got what we configured
+        outputFormat->setString("ts-schema", configSchema);
+    }
+    return err;
+}
+
 status_t ACodec::setMinBufferSize(OMX_U32 portIndex, size_t size) {
     OMX_PARAM_PORTDEFINITIONTYPE def;
     InitOMXParams(&def);
@@ -3140,6 +3251,29 @@
     return ERROR_UNSUPPORTED;
 }
 
+status_t ACodec::setPortBufferNum(OMX_U32 portIndex, int bufferNum) {
+    OMX_PARAM_PORTDEFINITIONTYPE def;
+    InitOMXParams(&def);
+    def.nPortIndex = portIndex;
+    status_t err;
+    ALOGD("Setting [%s] %s port buffer number: %d", mComponentName.c_str(),
+            portIndex == kPortIndexInput ? "input" : "output", bufferNum);
+    err = mOMX->getParameter(
+        mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
+    if (err != OK) {
+        return err;
+    }
+    def.nBufferCountActual = bufferNum;
+    err = mOMX->setParameter(
+        mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
+    if (err != OK) {
+        // Component could reject this request.
+        ALOGW("Fail to set [%s] %s port buffer number: %d", mComponentName.c_str(),
+            portIndex == kPortIndexInput ? "input" : "output", bufferNum);
+    }
+    return OK;
+}
+
 status_t ACodec::setupVideoDecoder(
         const char *mime, const sp<AMessage> &msg, bool haveNativeWindow,
         bool usingSwRenderer, sp<AMessage> &outputFormat) {
@@ -3196,6 +3330,24 @@
         return err;
     }
 
+    // Set the component input buffer number to be |tmp|. If succeed,
+    // component will set input port buffer number to be |tmp|. If fail,
+    // component will keep the same buffer number as before.
+    if (msg->findInt32("android._num-input-buffers", &tmp)) {
+        err = setPortBufferNum(kPortIndexInput, tmp);
+        if (err != OK)
+            return err;
+    }
+
+    // Set the component output buffer number to be |tmp|. If succeed,
+    // component will set output port buffer number to be |tmp|. If fail,
+    // component will keep the same buffer number as before.
+    if (msg->findInt32("android._num-output-buffers", &tmp)) {
+        err = setPortBufferNum(kPortIndexOutput, tmp);
+        if (err != OK)
+            return err;
+    }
+
     int32_t frameRateInt;
     float frameRateFloat;
     if (!msg->findFloat("frame-rate", &frameRateFloat)) {
@@ -3722,13 +3874,17 @@
 
         case OMX_VIDEO_CodingVP8:
         case OMX_VIDEO_CodingVP9:
-            err = setupVPXEncoderParameters(msg);
+            err = setupVPXEncoderParameters(msg, outputFormat);
             break;
 
         default:
             break;
     }
 
+    if (err != OK) {
+        return err;
+    }
+
     // Set up color aspects on input, but propagate them to the output format, as they will
     // not be read back from encoder.
     err = setColorAspectsForVideoEncoder(msg, outputFormat, inputFormat);
@@ -3747,6 +3903,29 @@
         err = OK;
     }
 
+    if (err != OK) {
+        return err;
+    }
+
+    switch (compressionFormat) {
+        case OMX_VIDEO_CodingAVC:
+        case OMX_VIDEO_CodingHEVC:
+            err = configureTemporalLayers(msg, true /* inConfigure */, outputFormat);
+            if (err != OK) {
+                err = OK; // ignore failure
+            }
+            break;
+
+        case OMX_VIDEO_CodingVP8:
+        case OMX_VIDEO_CodingVP9:
+            // TODO: do we need to support android.generic layering? webrtc layering is
+            // already set up in setupVPXEncoderParameters.
+            break;
+
+        default:
+            break;
+    }
+
     if (err == OK) {
         ALOGI("setupVideoEncoder succeeded");
     }
@@ -3791,14 +3970,31 @@
     return err;
 }
 
-static OMX_U32 setPFramesSpacing(int32_t iFramesInterval, int32_t frameRate) {
-    if (iFramesInterval < 0) {
-        return 0xFFFFFFFF;
-    } else if (iFramesInterval == 0) {
+static OMX_U32 setPFramesSpacing(
+        float iFramesInterval /* seconds */, int32_t frameRate, uint32_t BFramesSpacing = 0) {
+    // BFramesSpacing is the number of B frames between I/P frames
+    // PFramesSpacing (the value to be returned) is the number of P frames between I frames
+    //
+    // keyFrameInterval = ((PFramesSpacing + 1) * BFramesSpacing) + PFramesSpacing + 1
+    //                                     ^^^                            ^^^        ^^^
+    //                              number of B frames                number of P    I frame
+    //
+    //                  = (PFramesSpacing + 1) * (BFramesSpacing + 1)
+    //
+    // E.g.
+    //      I   P   I  : I-interval: 8, nPFrames 1, nBFrames 3
+    //       BBB BBB
+
+    if (iFramesInterval < 0) { // just 1 key frame
+        return 0xFFFFFFFE; // don't use maxint as key-frame-interval calculation will add 1
+    } else if (iFramesInterval == 0) { // just key frames
         return 0;
     }
-    OMX_U32 ret = frameRate * iFramesInterval;
-    return ret;
+
+    // round down as key-frame-interval is an upper limit
+    uint32_t keyFrameInterval = uint32_t(frameRate * iFramesInterval);
+    OMX_U32 ret = keyFrameInterval / (BFramesSpacing + 1);
+    return ret > 0 ? ret - 1 : 0;
 }
 
 static OMX_VIDEO_CONTROLRATETYPE getBitrateMode(const sp<AMessage> &msg) {
@@ -3811,9 +4007,10 @@
 }
 
 status_t ACodec::setupMPEG4EncoderParameters(const sp<AMessage> &msg) {
-    int32_t bitrate, iFrameInterval;
+    int32_t bitrate;
+    float iFrameInterval;
     if (!msg->findInt32("bitrate", &bitrate)
-            || !msg->findInt32("i-frame-interval", &iFrameInterval)) {
+            || !msg->findAsFloat("i-frame-interval", &iFrameInterval)) {
         return INVALID_OPERATION;
     }
 
@@ -3846,11 +4043,11 @@
     mpeg4type.nAllowedPictureTypes =
         OMX_VIDEO_PictureTypeI | OMX_VIDEO_PictureTypeP;
 
-    mpeg4type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate);
+    mpeg4type.nBFrames = 0;
+    mpeg4type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate, mpeg4type.nBFrames);
     if (mpeg4type.nPFrames == 0) {
         mpeg4type.nAllowedPictureTypes = OMX_VIDEO_PictureTypeI;
     }
-    mpeg4type.nBFrames = 0;
     mpeg4type.nIDCVLCThreshold = 0;
     mpeg4type.bACPred = OMX_TRUE;
     mpeg4type.nMaxPacketSize = 256;
@@ -3892,9 +4089,10 @@
 }
 
 status_t ACodec::setupH263EncoderParameters(const sp<AMessage> &msg) {
-    int32_t bitrate, iFrameInterval;
+    int32_t bitrate;
+    float iFrameInterval;
     if (!msg->findInt32("bitrate", &bitrate)
-            || !msg->findInt32("i-frame-interval", &iFrameInterval)) {
+            || !msg->findAsFloat("i-frame-interval", &iFrameInterval)) {
         return INVALID_OPERATION;
     }
 
@@ -3923,11 +4121,11 @@
     h263type.nAllowedPictureTypes =
         OMX_VIDEO_PictureTypeI | OMX_VIDEO_PictureTypeP;
 
-    h263type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate);
+    h263type.nBFrames = 0;
+    h263type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate, h263type.nBFrames);
     if (h263type.nPFrames == 0) {
         h263type.nAllowedPictureTypes = OMX_VIDEO_PictureTypeI;
     }
-    h263type.nBFrames = 0;
 
     int32_t profile;
     if (msg->findInt32("profile", &profile)) {
@@ -4020,9 +4218,10 @@
 }
 
 status_t ACodec::setupAVCEncoderParameters(const sp<AMessage> &msg) {
-    int32_t bitrate, iFrameInterval;
+    int32_t bitrate;
+    float iFrameInterval;
     if (!msg->findInt32("bitrate", &bitrate)
-            || !msg->findInt32("i-frame-interval", &iFrameInterval)) {
+            || !msg->findAsFloat("i-frame-interval", &iFrameInterval)) {
         return INVALID_OPERATION;
     }
 
@@ -4078,8 +4277,17 @@
         h264type.eProfile = static_cast<OMX_VIDEO_AVCPROFILETYPE>(profile);
         h264type.eLevel = static_cast<OMX_VIDEO_AVCLEVELTYPE>(level);
     } else {
-        // Use baseline profile for AVC recording if profile is not specified.
         h264type.eProfile = OMX_VIDEO_AVCProfileBaseline;
+#if 0   /* DON'T YET DEFAULT TO HIGHEST PROFILE */
+        // Use largest supported profile for AVC recording if profile is not specified.
+        for (OMX_VIDEO_AVCPROFILETYPE profile : {
+                OMX_VIDEO_AVCProfileHigh, OMX_VIDEO_AVCProfileMain }) {
+            if (verifySupportForProfileAndLevel(profile, 0) == OK) {
+                h264type.eProfile = profile;
+                break;
+            }
+        }
+#endif
     }
 
     ALOGI("setupAVCEncoderParameters with [profile: %s] [level: %s]",
@@ -4090,7 +4298,7 @@
         h264type.bUseHadamard = OMX_TRUE;
         h264type.nRefFrames = 1;
         h264type.nBFrames = 0;
-        h264type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate);
+        h264type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate, h264type.nBFrames);
         if (h264type.nPFrames == 0) {
             h264type.nAllowedPictureTypes = OMX_VIDEO_PictureTypeI;
         }
@@ -4108,7 +4316,7 @@
         h264type.bUseHadamard = OMX_TRUE;
         h264type.nRefFrames = 2;
         h264type.nBFrames = 1;
-        h264type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate);
+        h264type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate, h264type.nBFrames);
         h264type.nAllowedPictureTypes =
             OMX_VIDEO_PictureTypeI | OMX_VIDEO_PictureTypeP | OMX_VIDEO_PictureTypeB;
         h264type.nRefIdx10ActiveMinus1 = 0;
@@ -4140,13 +4348,42 @@
         return err;
     }
 
+    // TRICKY: if we are enabling temporal layering as well, some codecs may not support layering
+    // when B-frames are enabled. Detect this now so we can disable B frames if temporal layering
+    // is preferred.
+    AString tsSchema;
+    int32_t preferBFrames = (int32_t)false;
+    if (msg->findString("ts-schema", &tsSchema)
+            && (!msg->findInt32("android._prefer-b-frames", &preferBFrames) || !preferBFrames)) {
+        OMX_VIDEO_PARAM_ANDROID_TEMPORALLAYERINGTYPE layering;
+        InitOMXParams(&layering);
+        layering.nPortIndex = kPortIndexOutput;
+        if (mOMX->getParameter(
+                        mNode, (OMX_INDEXTYPE)OMX_IndexParamAndroidVideoTemporalLayering,
+                        &layering, sizeof(layering)) == OK
+                && layering.eSupportedPatterns
+                && layering.nBLayerCountMax == 0) {
+            h264type.nBFrames = 0;
+            h264type.nPFrames = setPFramesSpacing(iFrameInterval, frameRate, h264type.nBFrames);
+            h264type.nAllowedPictureTypes &= ~OMX_VIDEO_PictureTypeB;
+            ALOGI("disabling B-frames");
+            err = mOMX->setParameter(
+                    mNode, OMX_IndexParamVideoAvc, &h264type, sizeof(h264type));
+
+            if (err != OK) {
+                return err;
+            }
+        }
+    }
+
     return configureBitrate(bitrate, bitrateMode);
 }
 
 status_t ACodec::setupHEVCEncoderParameters(const sp<AMessage> &msg) {
-    int32_t bitrate, iFrameInterval;
+    int32_t bitrate;
+    float iFrameInterval;
     if (!msg->findInt32("bitrate", &bitrate)
-            || !msg->findInt32("i-frame-interval", &iFrameInterval)) {
+            || !msg->findAsFloat("i-frame-interval", &iFrameInterval)) {
         return INVALID_OPERATION;
     }
 
@@ -4188,7 +4425,7 @@
         hevcType.eLevel = static_cast<OMX_VIDEO_HEVCLEVELTYPE>(level);
     }
     // TODO: finer control?
-    hevcType.nKeyFrameInterval = setPFramesSpacing(iFrameInterval, frameRate);
+    hevcType.nKeyFrameInterval = setPFramesSpacing(iFrameInterval, frameRate) + 1;
 
     err = mOMX->setParameter(
             mNode, (OMX_INDEXTYPE)OMX_IndexParamVideoHevc, &hevcType, sizeof(hevcType));
@@ -4199,9 +4436,9 @@
     return configureBitrate(bitrate, bitrateMode);
 }
 
-status_t ACodec::setupVPXEncoderParameters(const sp<AMessage> &msg) {
+status_t ACodec::setupVPXEncoderParameters(const sp<AMessage> &msg, sp<AMessage> &outputFormat) {
     int32_t bitrate;
-    int32_t iFrameInterval = 0;
+    float iFrameInterval = 0;
     size_t tsLayers = 0;
     OMX_VIDEO_ANDROID_VPXTEMPORALLAYERPATTERNTYPE pattern =
         OMX_VIDEO_VPXTemporalLayerPatternNone;
@@ -4215,7 +4452,7 @@
     if (!msg->findInt32("bitrate", &bitrate)) {
         return INVALID_OPERATION;
     }
-    msg->findInt32("i-frame-interval", &iFrameInterval);
+    msg->findAsFloat("i-frame-interval", &iFrameInterval);
 
     OMX_VIDEO_CONTROLRATETYPE bitrateMode = getBitrateMode(msg);
 
@@ -4229,19 +4466,31 @@
     }
 
     AString tsSchema;
+    OMX_VIDEO_ANDROID_TEMPORALLAYERINGPATTERNTYPE tsType =
+        OMX_VIDEO_AndroidTemporalLayeringPatternNone;
+
     if (msg->findString("ts-schema", &tsSchema)) {
-        if (tsSchema == "webrtc.vp8.1-layer") {
+        unsigned int numLayers = 0;
+        unsigned int numBLayers = 0;
+        int tags;
+        char dummy;
+        if (sscanf(tsSchema.c_str(), "webrtc.vp8.%u-layer%c", &numLayers, &dummy) == 1
+                && numLayers > 0) {
             pattern = OMX_VIDEO_VPXTemporalLayerPatternWebRTC;
-            tsLayers = 1;
-        } else if (tsSchema == "webrtc.vp8.2-layer") {
+            tsType = OMX_VIDEO_AndroidTemporalLayeringPatternWebRTC;
+            tsLayers = numLayers;
+        } else if ((tags = sscanf(tsSchema.c_str(), "android.generic.%u%c%u%c",
+                        &numLayers, &dummy, &numBLayers, &dummy))
+                && (tags == 1 || (tags == 3 && dummy == '+'))
+                && numLayers > 0 && numLayers < UINT32_MAX - numBLayers) {
             pattern = OMX_VIDEO_VPXTemporalLayerPatternWebRTC;
-            tsLayers = 2;
-        } else if (tsSchema == "webrtc.vp8.3-layer") {
-            pattern = OMX_VIDEO_VPXTemporalLayerPatternWebRTC;
-            tsLayers = 3;
+            // VPX does not have a concept of B-frames, so just count all layers
+            tsType = OMX_VIDEO_AndroidTemporalLayeringPatternAndroid;
+            tsLayers = numLayers + numBLayers;
         } else {
-            ALOGW("Unsupported ts-schema [%s]", tsSchema.c_str());
+            ALOGW("Ignoring unsupported ts-schema [%s]", tsSchema.c_str());
         }
+        tsLayers = min(tsLayers, (size_t)OMX_VIDEO_ANDROID_MAXVP8TEMPORALLAYERS);
     }
 
     OMX_VIDEO_PARAM_ANDROID_VP8ENCODERTYPE vp8type;
@@ -4253,7 +4502,7 @@
 
     if (err == OK) {
         if (iFrameInterval > 0) {
-            vp8type.nKeyFrameInterval = setPFramesSpacing(iFrameInterval, frameRate);
+            vp8type.nKeyFrameInterval = setPFramesSpacing(iFrameInterval, frameRate) + 1;
         }
         vp8type.eTemporalPattern = pattern;
         vp8type.nTemporalLayerCount = tsLayers;
@@ -4273,6 +4522,12 @@
                 &vp8type, sizeof(vp8type));
         if (err != OK) {
             ALOGW("Extended VP8 parameters set failed: %d", err);
+        } else if (tsType == OMX_VIDEO_AndroidTemporalLayeringPatternWebRTC) {
+            // advertise even single layer WebRTC layering, as it is defined
+            outputFormat->setString("ts-schema", AStringPrintf("webrtc.vp8.%u-layer", tsLayers));
+        } else if (tsLayers > 0) {
+            // tsType == OMX_VIDEO_AndroidTemporalLayeringPatternAndroid
+            outputFormat->setString("ts-schema", AStringPrintf("android.generic.%u", tsLayers));
         }
     }
 
@@ -4803,32 +5058,21 @@
                             sizeof(vp8type));
 
                     if (err == OK) {
-                        AString tsSchema = "none";
-                        if (vp8type.eTemporalPattern
-                                == OMX_VIDEO_VPXTemporalLayerPatternWebRTC) {
-                            switch (vp8type.nTemporalLayerCount) {
-                                case 1:
-                                {
-                                    tsSchema = "webrtc.vp8.1-layer";
-                                    break;
-                                }
-                                case 2:
-                                {
-                                    tsSchema = "webrtc.vp8.2-layer";
-                                    break;
-                                }
-                                case 3:
-                                {
-                                    tsSchema = "webrtc.vp8.3-layer";
-                                    break;
-                                }
-                                default:
-                                {
-                                    break;
-                                }
+                        if (vp8type.eTemporalPattern == OMX_VIDEO_VPXTemporalLayerPatternWebRTC
+                                && vp8type.nTemporalLayerCount > 0
+                                && vp8type.nTemporalLayerCount
+                                        <= OMX_VIDEO_ANDROID_MAXVP8TEMPORALLAYERS) {
+                            // advertise as android.generic if we configured for android.generic
+                            AString origSchema;
+                            if (notify->findString("ts-schema", &origSchema)
+                                    && origSchema.startsWith("android.generic")) {
+                                notify->setString("ts-schema", AStringPrintf(
+                                        "android.generic.%u", vp8type.nTemporalLayerCount));
+                            } else {
+                                notify->setString("ts-schema", AStringPrintf(
+                                        "webrtc.vp8.%u-layer", vp8type.nTemporalLayerCount));
                             }
                         }
-                        notify->setString("ts-schema", tsSchema);
                     }
                     // Fall through to set up mime.
                 }
@@ -7237,6 +7481,23 @@
         }
     }
 
+    int64_t timeOffsetUs;
+    if (params->findInt64("time-offset-us", &timeOffsetUs)) {
+        status_t err = mOMX->setInternalOption(
+            mNode,
+            kPortIndexInput,
+            IOMX::INTERNAL_OPTION_TIME_OFFSET,
+            &timeOffsetUs,
+            sizeof(timeOffsetUs));
+
+        if (err != OK) {
+            ALOGE("[%s] Unable to set input buffer time offset (err %d)",
+                mComponentName.c_str(),
+                err);
+            return err;
+        }
+    }
+
     int64_t skipFramesBeforeUs;
     if (params->findInt64("skip-frames-before", &skipFramesBeforeUs)) {
         status_t err =
@@ -7301,7 +7562,12 @@
         }
     }
 
-    return OK;
+    status_t err = configureTemporalLayers(params, false /* inConfigure */, mOutputFormat);
+    if (err != OK) {
+        err = OK; // ignore failure
+    }
+
+    return err;
 }
 
 void ACodec::onSignalEndOfInputStream() {
diff --git a/media/libstagefright/AMRExtractor.cpp b/media/libstagefright/AMRExtractor.cpp
index 1458802..0e98db8 100644
--- a/media/libstagefright/AMRExtractor.cpp
+++ b/media/libstagefright/AMRExtractor.cpp
@@ -100,7 +100,10 @@
 static status_t getFrameSizeByOffset(const sp<DataSource> &source,
         off64_t offset, bool isWide, size_t *frameSize) {
     uint8_t header;
-    if (source->readAt(offset, &header, 1) < 1) {
+    ssize_t count = source->readAt(offset, &header, 1);
+    if (count == 0) {
+        return ERROR_END_OF_STREAM;
+    } else if (count < 0) {
         return ERROR_IO;
     }
 
@@ -140,7 +143,10 @@
 
     if (mDataSource->getSize(&streamSize) == OK) {
          while (offset < streamSize) {
-            if (getFrameSizeByOffset(source, offset, mIsWide, &frameSize) != OK) {
+             status_t status = getFrameSizeByOffset(source, offset, mIsWide, &frameSize);
+             if (status == ERROR_END_OF_STREAM) {
+                 break;
+             } else if (status != OK) {
                 return;
             }
 
diff --git a/media/libstagefright/Android.mk b/media/libstagefright/Android.mk
index c4214c6..604ad7c 100644
--- a/media/libstagefright/Android.mk
+++ b/media/libstagefright/Android.mk
@@ -99,6 +99,7 @@
 
 LOCAL_STATIC_LIBRARIES := \
         libstagefright_color_conversion \
+        libyuv_static \
         libstagefright_aacenc \
         libstagefright_matroska \
         libstagefright_mediafilter \
diff --git a/media/libstagefright/CallbackDataSource.cpp b/media/libstagefright/CallbackDataSource.cpp
index f14d34d..0434bab 100644
--- a/media/libstagefright/CallbackDataSource.cpp
+++ b/media/libstagefright/CallbackDataSource.cpp
@@ -51,7 +51,7 @@
 }
 
 ssize_t CallbackDataSource::readAt(off64_t offset, void* data, size_t size) {
-    if (mMemory == NULL) {
+    if (mMemory == NULL || data == NULL) {
         return -1;
     }
 
@@ -109,6 +109,10 @@
     }
 }
 
+sp<DecryptHandle> CallbackDataSource::DrmInitialization(const char *mime) {
+    return mIDataSource->DrmInitialization(mime);
+}
+
 TinyCacheSource::TinyCacheSource(const sp<DataSource>& source)
     : mSource(source), mCachedOffset(0), mCachedSize(0) {
     mName = String8::format("TinyCacheSource(%s)", mSource->toString().string());
@@ -146,12 +150,19 @@
         }
     }
 
+
     // Fill the cache and copy to the caller.
     const ssize_t numRead = mSource->readAt(offset, mCache, kCacheSize);
     if (numRead <= 0) {
+        // Flush cache on error
+        mCachedSize = 0;
+        mCachedOffset = 0;
         return numRead;
     }
     if ((size_t)numRead > kCacheSize) {
+        // Flush cache on error
+        mCachedSize = 0;
+        mCachedOffset = 0;
         return ERROR_OUT_OF_RANGE;
     }
 
@@ -172,4 +183,11 @@
     return mSource->flags();
 }
 
+sp<DecryptHandle> TinyCacheSource::DrmInitialization(const char *mime) {
+    // flush cache when DrmInitialization occurs since decrypted
+    // data may differ from what is in cache.
+    mCachedOffset = 0;
+    mCachedSize = 0;
+    return mSource->DrmInitialization(mime);
+}
 } // namespace android
diff --git a/media/libstagefright/CameraSource.cpp b/media/libstagefright/CameraSource.cpp
index 5fc9237..408ad7a 100644
--- a/media/libstagefright/CameraSource.cpp
+++ b/media/libstagefright/CameraSource.cpp
@@ -1117,6 +1117,9 @@
         int64_t token = IPCThreadState::self()->clearCallingIdentity();
         mCamera->releaseRecordingFrameHandle(handle);
         IPCThreadState::self()->restoreCallingIdentity(token);
+    } else {
+        native_handle_close(handle);
+        native_handle_delete(handle);
     }
 }
 
diff --git a/media/libstagefright/DataSource.cpp b/media/libstagefright/DataSource.cpp
index 163a527..2cfadba 100644
--- a/media/libstagefright/DataSource.cpp
+++ b/media/libstagefright/DataSource.cpp
@@ -231,7 +231,7 @@
         }
 
         String8 cacheConfig;
-        bool disconnectAtHighwatermark;
+        bool disconnectAtHighwatermark = false;
         KeyedVector<String8, String8> nonCacheSpecificHeaders;
         if (headers != NULL) {
             nonCacheSpecificHeaders = *headers;
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index e873dce..02be033 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -44,6 +44,7 @@
 
 #include <byteswap.h>
 #include "include/ID3.h"
+#include "include/avc_utils.h"
 
 #ifndef UINT32_MAX
 #define UINT32_MAX       (4294967295U)
@@ -54,6 +55,10 @@
 enum {
     // max track header chunk to return
     kMaxTrackHeaderSize = 32,
+
+    // maximum size of an atom. Some atoms can be bigger according to the spec,
+    // but we only allow up to this size.
+    kMaxAtomSize = 64 * 1024 * 1024,
 };
 
 class MPEG4Source : public MediaSource {
@@ -74,6 +79,7 @@
     virtual sp<MetaData> getFormat();
 
     virtual status_t read(MediaBuffer **buffer, const ReadOptions *options = NULL);
+    virtual bool supportNonblockingRead() { return true; }
     virtual status_t fragmentedRead(MediaBuffer **buffer, const ReadOptions *options = NULL);
 
 protected:
@@ -368,8 +374,8 @@
       mMdatFound(false),
       mDataSource(source),
       mInitCheck(NO_INIT),
-      mHasVideo(false),
       mHeaderTimescale(0),
+      mIsQT(false),
       mFirstTrack(NULL),
       mLastTrack(NULL),
       mFileMetaData(new MetaData),
@@ -472,7 +478,8 @@
             } else {
                 uint32_t sampleIndex;
                 uint32_t sampleTime;
-                if (track->sampleTable->findThumbnailSample(&sampleIndex) == OK
+                if (track->timescale != 0 &&
+                        track->sampleTable->findThumbnailSample(&sampleIndex) == OK
                         && track->sampleTable->getMetaDataForSample(
                             sampleIndex, NULL /* offset */, NULL /* size */,
                             &sampleTime) == OK) {
@@ -538,11 +545,13 @@
     }
 
     if (mInitCheck == OK) {
-        if (mHasVideo) {
+        if (findTrackByMimePrefix("video/") != NULL) {
             mFileMetaData->setCString(
                     kKeyMIMEType, MEDIA_MIMETYPE_CONTAINER_MPEG4);
-        } else {
+        } else if (findTrackByMimePrefix("audio/") != NULL) {
             mFileMetaData->setCString(kKeyMIMEType, "audio/mp4");
+        } else {
+            mFileMetaData->setCString(kKeyMIMEType, "application/octet-stream");
         }
     } else {
         mInitCheck = err;
@@ -877,6 +886,13 @@
         ALOGE("b/23540914");
         return ERROR_MALFORMED;
     }
+    if (chunk_type != FOURCC('m', 'd', 'a', 't') && chunk_data_size > kMaxAtomSize) {
+        char errMsg[100];
+        sprintf(errMsg, "%s atom has size %" PRId64, chunk, chunk_data_size);
+        ALOGE("%s (b/28615448)", errMsg);
+        android_errorWriteWithInfoLog(0x534e4554, "28615448", -1, errMsg, strlen(errMsg));
+        return ERROR_MALFORMED;
+    }
 
     if (chunk_type != FOURCC('c', 'p', 'r', 't')
             && chunk_type != FOURCC('c', 'o', 'v', 'r')
@@ -913,7 +929,12 @@
         case FOURCC('s', 'i', 'n', 'f'):
         case FOURCC('s', 'c', 'h', 'i'):
         case FOURCC('e', 'd', 't', 's'):
+        case FOURCC('w', 'a', 'v', 'e'):
         {
+            if (chunk_type == FOURCC('m', 'o', 'o', 'v') && depth != 0) {
+                ALOGE("moov: depth %d", depth);
+                return ERROR_MALFORMED;
+            }
             if (chunk_type == FOURCC('m', 'o', 'o', 'f') && !mMoofFound) {
                 // store the offset of the first segment
                 mMoofFound = true;
@@ -942,6 +963,10 @@
 
             bool isTrack = false;
             if (chunk_type == FOURCC('t', 'r', 'a', 'k')) {
+                if (depth != 1) {
+                    ALOGE("trak: depth %d", depth);
+                    return ERROR_MALFORMED;
+                }
                 isTrack = true;
 
                 Track *track = new Track;
@@ -965,6 +990,10 @@
             while (*offset < stop_offset) {
                 status_t err = parseChunk(offset, depth + 1);
                 if (err != OK) {
+                    if (isTrack) {
+                        mLastTrack->skipTrack = true;
+                        break;
+                    }
                     return err;
                 }
             }
@@ -989,7 +1018,9 @@
                         while (cur && cur->next != mLastTrack) {
                             cur = cur->next;
                         }
-                        cur->next = NULL;
+                        if (cur) {
+                            cur->next = NULL;
+                        }
                         delete mLastTrack;
                         mLastTrack = cur;
                     }
@@ -1310,10 +1341,6 @@
 
         case FOURCC('s', 't', 's', 'd'):
         {
-            if (chunk_data_size < 8) {
-                return ERROR_MALFORMED;
-            }
-
             uint8_t buffer[8];
             if (chunk_data_size < (off64_t)sizeof(buffer)) {
                 return ERROR_MALFORMED;
@@ -1370,6 +1397,13 @@
         case FOURCC('s', 'a', 'm', 'r'):
         case FOURCC('s', 'a', 'w', 'b'):
         {
+            if (mIsQT && chunk_type == FOURCC('m', 'p', '4', 'a')
+                    && depth >= 1 && mPath[depth - 1] == FOURCC('w', 'a', 'v', 'e')) {
+                // Ignore mp4a embedded in QT wave atom
+                *offset += chunk_size;
+                break;
+            }
+
             uint8_t buffer[8 + 20];
             if (chunk_data_size < (ssize_t)sizeof(buffer)) {
                 // Basic AudioSampleEntry size.
@@ -1382,6 +1416,7 @@
             }
 
             uint16_t data_ref_index __unused = U16_AT(&buffer[6]);
+            uint16_t version = U16_AT(&buffer[8]);
             uint32_t num_channels = U16_AT(&buffer[16]);
 
             uint16_t sample_size = U16_AT(&buffer[18]);
@@ -1390,6 +1425,42 @@
             if (mLastTrack == NULL)
                 return ERROR_MALFORMED;
 
+            off64_t stop_offset = *offset + chunk_size;
+            *offset = data_offset + sizeof(buffer);
+
+            if (mIsQT && chunk_type == FOURCC('m', 'p', '4', 'a')) {
+                if (version == 1) {
+                    if (mDataSource->readAt(*offset, buffer, 16) < 16) {
+                        return ERROR_IO;
+                    }
+
+#if 0
+                    U32_AT(buffer);  // samples per packet
+                    U32_AT(&buffer[4]);  // bytes per packet
+                    U32_AT(&buffer[8]);  // bytes per frame
+                    U32_AT(&buffer[12]);  // bytes per sample
+#endif
+                    *offset += 16;
+                } else if (version == 2) {
+                    uint8_t v2buffer[36];
+                    if (mDataSource->readAt(*offset, v2buffer, 36) < 36) {
+                        return ERROR_IO;
+                    }
+
+#if 0
+                    U32_AT(v2buffer);  // size of struct only
+                    sample_rate = (uint32_t)U64_AT(&v2buffer[4]);  // audio sample rate
+                    num_channels = U32_AT(&v2buffer[12]);  // num audio channels
+                    U32_AT(&v2buffer[16]);  // always 0x7f000000
+                    sample_size = (uint16_t)U32_AT(&v2buffer[20]);  // const bits per channel
+                    U32_AT(&v2buffer[24]);  // format specifc flags
+                    U32_AT(&v2buffer[28]);  // const bytes per audio packet
+                    U32_AT(&v2buffer[32]);  // const LPCM frames per audio packet
+#endif
+                    *offset += 36;
+                }
+            }
+
             if (chunk_type != FOURCC('e', 'n', 'c', 'a')) {
                 // if the chunk type is enca, we'll get the type from the sinf/frma box later
                 mLastTrack->meta->setCString(kKeyMIMEType, FourCC2MIME(chunk_type));
@@ -1400,8 +1471,6 @@
             mLastTrack->meta->setInt32(kKeyChannelCount, num_channels);
             mLastTrack->meta->setInt32(kKeySampleRate, sample_rate);
 
-            off64_t stop_offset = *offset + chunk_size;
-            *offset = data_offset + sizeof(buffer);
             while (*offset < stop_offset) {
                 status_t err = parseChunk(offset, depth + 1);
                 if (err != OK) {
@@ -1424,8 +1493,6 @@
         case FOURCC('h', 'v', 'c', '1'):
         case FOURCC('h', 'e', 'v', '1'):
         {
-            mHasVideo = true;
-
             uint8_t buffer[78];
             if (chunk_data_size < (ssize_t)sizeof(buffer)) {
                 // Basic VideoSampleEntry size.
@@ -1686,8 +1753,9 @@
 
             // Worst case the location string length would be 18,
             // for instance +90.0000-180.0000, without the trailing "/" and
-            // the string length + language code.
-            char buffer[18];
+            // the string length + language code, and some devices include
+            // an additional 8 bytes of altitude, e.g. +007.186
+            char buffer[18 + 8];
 
             // Substracting 5 from the data size is because the text string length +
             // language code takes 4 bytes, and the trailing slash "/" takes 1 byte.
@@ -1767,6 +1835,9 @@
         case FOURCC('b', 't', 'r', 't'):
         {
             *offset += chunk_size;
+            if (mLastTrack == NULL) {
+                return ERROR_MALFORMED;
+            }
 
             uint8_t buffer[12];
             if (chunk_data_size != sizeof(buffer)) {
@@ -1936,6 +2007,10 @@
         {
             *offset += chunk_size;
 
+            if (depth != 1) {
+                ALOGE("mvhd: depth %d", depth);
+                return ERROR_MALFORMED;
+            }
             if (chunk_data_size < 32) {
                 return ERROR_MALFORMED;
             }
@@ -2238,6 +2313,38 @@
             return UNKNOWN_ERROR; // stop parsing after sidx
         }
 
+        case FOURCC('f', 't', 'y', 'p'):
+        {
+            if (chunk_data_size < 8 || depth != 0) {
+                return ERROR_MALFORMED;
+            }
+
+            off64_t stop_offset = *offset + chunk_size;
+            uint32_t numCompatibleBrands = (chunk_data_size - 8) / 4;
+            for (size_t i = 0; i < numCompatibleBrands + 2; ++i) {
+                if (i == 1) {
+                    // Skip this index, it refers to the minorVersion,
+                    // not a brand.
+                    continue;
+                }
+
+                uint32_t brand;
+                if (mDataSource->readAt(data_offset + 4 * i, &brand, 4) < 4) {
+                    return ERROR_MALFORMED;
+                }
+
+                brand = ntohl(brand);
+                if (brand == FOURCC('q', 't', ' ', ' ')) {
+                    mIsQT = true;
+                    break;
+                }
+            }
+
+            *offset = stop_offset;
+
+            break;
+        }
+
         default:
         {
             // check if we're parsing 'ilst' for meta keys
@@ -2471,6 +2578,15 @@
         if (!strcasecmp(mMetaKeyMap[index].c_str(), "com.android.capture.fps")) {
             mFileMetaData->setFloat(kKeyCaptureFramerate, *(float *)&val);
         }
+    } else if (dataType == 67 && dataSize >= 4) {
+        // BE signed int32
+        uint32_t val;
+        if (!mDataSource->getUInt32(offset, &val)) {
+            return ERROR_MALFORMED;
+        }
+        if (!strcasecmp(mMetaKeyMap[index].c_str(), "com.android.video.temporal_layers_count")) {
+            mFileMetaData->setInt32(kKeyTemporalLayerCount, val);
+        }
     } else {
         // add more keys if needed
         ALOGV("ignoring key: type %d, size %d", dataType, dataSize);
@@ -3553,13 +3669,20 @@
 
     // A somewhat arbitrary limit that should be sufficient for 8k video frames
     // If you see the message below for a valid input stream: increase the limit
-    if (max_size > 64 * 1024 * 1024) {
-        ALOGE("bogus max input size: %zu", max_size);
+    const size_t kMaxBufferSize = 64 * 1024 * 1024;
+    if (max_size > kMaxBufferSize) {
+        ALOGE("bogus max input size: %zu > %zu", max_size, kMaxBufferSize);
         return ERROR_MALFORMED;
     }
-    mGroup = new MediaBufferGroup;
-    mGroup->add_buffer(new MediaBuffer(max_size));
+    if (max_size == 0) {
+        ALOGE("zero max input size");
+        return ERROR_MALFORMED;
+    }
 
+    // Allow up to kMaxBuffers, but not if the total exceeds kMaxBufferSize.
+    const size_t kMaxBuffers = 8;
+    const size_t buffers = min(kMaxBufferSize / max_size, kMaxBuffers);
+    mGroup = new MediaBufferGroup(buffers, max_size);
     mSrcBuffer = new (std::nothrow) uint8_t[max_size];
     if (mSrcBuffer == NULL) {
         // file probably specified a bad max size
@@ -3766,7 +3889,12 @@
         return OK;
     }
     if (smplcnt > mCurrentSampleInfoAllocSize) {
-        mCurrentSampleInfoSizes = (uint8_t*) realloc(mCurrentSampleInfoSizes, smplcnt);
+        uint8_t * newPtr =  (uint8_t*) realloc(mCurrentSampleInfoSizes, smplcnt);
+        if (newPtr == NULL) {
+            ALOGE("failed to realloc %u -> %u", mCurrentSampleInfoAllocSize, smplcnt);
+            return NO_MEMORY;
+        }
+        mCurrentSampleInfoSizes = newPtr;
         mCurrentSampleInfoAllocSize = smplcnt;
     }
 
@@ -3805,6 +3933,7 @@
     if (entrycount > mCurrentSampleInfoOffsetsAllocSize) {
         uint64_t *newPtr = (uint64_t *)realloc(mCurrentSampleInfoOffsets, entrycount * 8);
         if (newPtr == NULL) {
+            ALOGE("failed to realloc %u -> %u", mCurrentSampleInfoOffsetsAllocSize, entrycount * 8);
             return NO_MEMORY;
         }
         mCurrentSampleInfoOffsets = newPtr;
@@ -4015,11 +4144,13 @@
     if (!mDataSource->getUInt32(offset, &flags)) {
         return ERROR_MALFORMED;
     }
-    ALOGV("fragment run flags: %08x", flags);
-
-    if (flags & 0xff000000) {
-        return -EINVAL;
-    }
+    // |version| only affects SampleCompositionTimeOffset field.
+    // If version == 0, SampleCompositionTimeOffset is uint32_t;
+    // Otherwise, SampleCompositionTimeOffset is int32_t.
+    // Sample.compositionOffset is defined as int32_t.
+    uint8_t version = flags >> 24;
+    flags &= 0xffffff;
+    ALOGV("fragment run version: 0x%02x, flags: 0x%06x", version, flags);
 
     if ((flags & kFirstSampleFlagsPresent) && (flags & kSampleFlagsPresent)) {
         // These two shall not be used together.
@@ -4186,6 +4317,11 @@
 
     CHECK(mStarted);
 
+    if (options != nullptr && options->getNonBlocking() && !mGroup->has_buffers()) {
+        *out = nullptr;
+        return WOULD_BLOCK;
+    }
+
     if (mFirstMoofOffset > 0) {
         return fragmentedRead(out, options);
     }
@@ -4276,8 +4412,8 @@
         // fall through
     }
 
-    off64_t offset;
-    size_t size;
+    off64_t offset = 0;
+    size_t size = 0;
     uint32_t cts, stts;
     bool isSyncSample;
     bool newBuffer = false;
@@ -4464,6 +4600,12 @@
                     kKeyTargetTime, targetSampleTimeUs);
         }
 
+        if (mIsAVC) {
+            uint32_t layerId = FindAVCLayerId(
+                    (const uint8_t *)mBuffer->data(), mBuffer->range_length());
+            mBuffer->meta_data()->setInt32(kKeyTemporalLayerId, layerId);
+        }
+
         if (isSyncSample) {
             mBuffer->meta_data()->setInt32(kKeyIsSyncFrame, 1);
         }
@@ -4627,6 +4769,12 @@
                         kKeyTargetTime, targetSampleTimeUs);
             }
 
+            if (mIsAVC) {
+                uint32_t layerId = FindAVCLayerId(
+                        (const uint8_t *)mBuffer->data(), mBuffer->range_length());
+                mBuffer->meta_data()->setInt32(kKeyTemporalLayerId, layerId);
+            }
+
             if (isSyncSample) {
                 mBuffer->meta_data()->setInt32(kKeyIsSyncFrame, 1);
             }
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
old mode 100644
new mode 100755
index 16e52a2..9de5c26
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -17,6 +17,8 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "MPEG4Writer"
 
+#include <algorithm>
+
 #include <arpa/inet.h>
 #include <fcntl.h>
 #include <inttypes.h>
@@ -28,8 +30,11 @@
 
 #include <utils/Log.h>
 
+#include <functional>
+
 #include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/foundation/AMessage.h>
+#include <media/stagefright/foundation/AUtils.h>
 #include <media/stagefright/foundation/ColorUtils.h>
 #include <media/stagefright/MPEG4Writer.h>
 #include <media/stagefright/MediaBuffer.h>
@@ -43,6 +48,7 @@
 
 #include "include/ESDS.h"
 #include "include/HevcUtils.h"
+#include "include/avc_utils.h"
 
 #ifndef __predict_false
 #define __predict_false(exp) __builtin_expect((exp) != 0, 0)
@@ -70,6 +76,7 @@
 static const char kMetaKey_Build[]      = "com.android.build";
 #endif
 static const char kMetaKey_CaptureFps[] = "com.android.capture.fps";
+static const char kMetaKey_TemporalLayerCount[] = "com.android.video.temporal_layers_count";
 
 static const uint8_t kMandatoryHevcNalUnitTypes[3] = {
     kHevcNalUnitTypeVps,
@@ -117,18 +124,18 @@
     };
 
     // A helper class to handle faster write box with table entries
-    template<class TYPE>
+    template<class TYPE, unsigned ENTRY_SIZE>
+    // ENTRY_SIZE: # of values in each entry
     struct ListTableEntries {
-        ListTableEntries(uint32_t elementCapacity, uint32_t entryCapacity)
+        static_assert(ENTRY_SIZE > 0, "ENTRY_SIZE must be positive");
+        ListTableEntries(uint32_t elementCapacity)
             : mElementCapacity(elementCapacity),
-            mEntryCapacity(entryCapacity),
             mTotalNumTableEntries(0),
             mNumValuesInCurrEntry(0),
             mCurrTableEntriesElement(NULL) {
             CHECK_GT(mElementCapacity, 0);
-            CHECK_GT(mEntryCapacity, 0);
             // Ensure no integer overflow on allocation in add().
-            CHECK_LT(mEntryCapacity, UINT32_MAX / mElementCapacity);
+            CHECK_LT(ENTRY_SIZE, UINT32_MAX / mElementCapacity);
         }
 
         // Free the allocated memory.
@@ -145,10 +152,10 @@
         // @arg value must be in network byte order
         // @arg pos location the value must be in.
         void set(const TYPE& value, uint32_t pos) {
-            CHECK_LT(pos, mTotalNumTableEntries * mEntryCapacity);
+            CHECK_LT(pos, mTotalNumTableEntries * ENTRY_SIZE);
 
             typename List<TYPE *>::iterator it = mTableEntryList.begin();
-            uint32_t iterations = (pos / (mElementCapacity * mEntryCapacity));
+            uint32_t iterations = (pos / (mElementCapacity * ENTRY_SIZE));
             while (it != mTableEntryList.end() && iterations > 0) {
                 ++it;
                 --iterations;
@@ -156,7 +163,7 @@
             CHECK(it != mTableEntryList.end());
             CHECK_EQ(iterations, 0);
 
-            (*it)[(pos % (mElementCapacity * mEntryCapacity))] = value;
+            (*it)[(pos % (mElementCapacity * ENTRY_SIZE))] = value;
         }
 
         // Get the value at the given position by the given value.
@@ -164,12 +171,12 @@
         // @arg pos location the value must be in.
         // @return true if a value is found.
         bool get(TYPE& value, uint32_t pos) const {
-            if (pos >= mTotalNumTableEntries * mEntryCapacity) {
+            if (pos >= mTotalNumTableEntries * ENTRY_SIZE) {
                 return false;
             }
 
             typename List<TYPE *>::iterator it = mTableEntryList.begin();
-            uint32_t iterations = (pos / (mElementCapacity * mEntryCapacity));
+            uint32_t iterations = (pos / (mElementCapacity * ENTRY_SIZE));
             while (it != mTableEntryList.end() && iterations > 0) {
                 ++it;
                 --iterations;
@@ -177,27 +184,42 @@
             CHECK(it != mTableEntryList.end());
             CHECK_EQ(iterations, 0);
 
-            value = (*it)[(pos % (mElementCapacity * mEntryCapacity))];
+            value = (*it)[(pos % (mElementCapacity * ENTRY_SIZE))];
             return true;
         }
 
+        // adjusts all values by |adjust(value)|
+        void adjustEntries(
+                std::function<void(size_t /* ix */, TYPE(& /* entry */)[ENTRY_SIZE])> update) {
+            size_t nEntries = mTotalNumTableEntries + mNumValuesInCurrEntry / ENTRY_SIZE;
+            size_t ix = 0;
+            for (TYPE *entryArray : mTableEntryList) {
+                size_t num = std::min(nEntries, (size_t)mElementCapacity);
+                for (size_t i = 0; i < num; ++i) {
+                    update(ix++, (TYPE(&)[ENTRY_SIZE])(*entryArray));
+                    entryArray += ENTRY_SIZE;
+                }
+                nEntries -= num;
+            }
+        }
+
         // Store a single value.
         // @arg value must be in network byte order.
         void add(const TYPE& value) {
             CHECK_LT(mNumValuesInCurrEntry, mElementCapacity);
             uint32_t nEntries = mTotalNumTableEntries % mElementCapacity;
-            uint32_t nValues  = mNumValuesInCurrEntry % mEntryCapacity;
+            uint32_t nValues  = mNumValuesInCurrEntry % ENTRY_SIZE;
             if (nEntries == 0 && nValues == 0) {
-                mCurrTableEntriesElement = new TYPE[mEntryCapacity * mElementCapacity];
+                mCurrTableEntriesElement = new TYPE[ENTRY_SIZE * mElementCapacity];
                 CHECK(mCurrTableEntriesElement != NULL);
                 mTableEntryList.push_back(mCurrTableEntriesElement);
             }
 
-            uint32_t pos = nEntries * mEntryCapacity + nValues;
+            uint32_t pos = nEntries * ENTRY_SIZE + nValues;
             mCurrTableEntriesElement[pos] = value;
 
             ++mNumValuesInCurrEntry;
-            if ((mNumValuesInCurrEntry % mEntryCapacity) == 0) {
+            if ((mNumValuesInCurrEntry % ENTRY_SIZE) == 0) {
                 ++mTotalNumTableEntries;
                 mNumValuesInCurrEntry = 0;
             }
@@ -208,17 +230,17 @@
         // 2. followed by the values in the table enties in order
         // @arg writer the writer to actual write to the storage
         void write(MPEG4Writer *writer) const {
-            CHECK_EQ(mNumValuesInCurrEntry % mEntryCapacity, 0);
+            CHECK_EQ(mNumValuesInCurrEntry % ENTRY_SIZE, 0);
             uint32_t nEntries = mTotalNumTableEntries;
             writer->writeInt32(nEntries);
             for (typename List<TYPE *>::iterator it = mTableEntryList.begin();
                 it != mTableEntryList.end(); ++it) {
                 CHECK_GT(nEntries, 0);
                 if (nEntries >= mElementCapacity) {
-                    writer->write(*it, sizeof(TYPE) * mEntryCapacity, mElementCapacity);
+                    writer->write(*it, sizeof(TYPE) * ENTRY_SIZE, mElementCapacity);
                     nEntries -= mElementCapacity;
                 } else {
-                    writer->write(*it, sizeof(TYPE) * mEntryCapacity, nEntries);
+                    writer->write(*it, sizeof(TYPE) * ENTRY_SIZE, nEntries);
                     break;
                 }
             }
@@ -229,9 +251,8 @@
 
     private:
         uint32_t         mElementCapacity;  // # entries in an element
-        uint32_t         mEntryCapacity;    // # of values in each entry
         uint32_t         mTotalNumTableEntries;
-        uint32_t         mNumValuesInCurrEntry;  // up to mEntryCapacity
+        uint32_t         mNumValuesInCurrEntry;  // up to ENTRY_SIZE
         TYPE             *mCurrTableEntriesElement;
         mutable List<TYPE *>     mTableEntryList;
 
@@ -251,9 +272,11 @@
     bool mIsHevc;
     bool mIsAudio;
     bool mIsMPEG4;
+    bool mIsMalformed;
     int32_t mTrackId;
     int64_t mTrackDurationUs;
     int64_t mMaxChunkDurationUs;
+    int64_t mLastDecodingTimeUs;
 
     int64_t mEstimatedTrackSizeBytes;
     int64_t mMdatSizeBytes;
@@ -265,14 +288,14 @@
     List<MediaBuffer *> mChunkSamples;
 
     bool                mSamplesHaveSameSize;
-    ListTableEntries<uint32_t> *mStszTableEntries;
+    ListTableEntries<uint32_t, 1> *mStszTableEntries;
 
-    ListTableEntries<uint32_t> *mStcoTableEntries;
-    ListTableEntries<off64_t> *mCo64TableEntries;
-    ListTableEntries<uint32_t> *mStscTableEntries;
-    ListTableEntries<uint32_t> *mStssTableEntries;
-    ListTableEntries<uint32_t> *mSttsTableEntries;
-    ListTableEntries<uint32_t> *mCttsTableEntries;
+    ListTableEntries<uint32_t, 1> *mStcoTableEntries;
+    ListTableEntries<off64_t, 1> *mCo64TableEntries;
+    ListTableEntries<uint32_t, 3> *mStscTableEntries;
+    ListTableEntries<uint32_t, 1> *mStssTableEntries;
+    ListTableEntries<uint32_t, 2> *mSttsTableEntries;
+    ListTableEntries<uint32_t, 2> *mCttsTableEntries;
 
     int64_t mMinCttsOffsetTimeUs;
     int64_t mMaxCttsOffsetTimeUs;
@@ -1162,6 +1185,37 @@
     }
 }
 
+off64_t MPEG4Writer::addMultipleLengthPrefixedSamples_l(MediaBuffer *buffer) {
+    off64_t old_offset = mOffset;
+
+    const size_t kExtensionNALSearchRange = 64; // bytes to look for non-VCL NALUs
+
+    const uint8_t *dataStart = (const uint8_t *)buffer->data() + buffer->range_offset();
+    const uint8_t *currentNalStart = dataStart;
+    const uint8_t *nextNalStart;
+    const uint8_t *data = dataStart;
+    size_t nextNalSize;
+    size_t searchSize = buffer->range_length() > kExtensionNALSearchRange ?
+                   kExtensionNALSearchRange : buffer->range_length();
+
+    while (getNextNALUnit(&data, &searchSize, &nextNalStart,
+            &nextNalSize, true) == OK) {
+        size_t currentNalSize = nextNalStart - currentNalStart - 4 /* strip start-code */;
+        MediaBuffer *nalBuf = new MediaBuffer((void *)currentNalStart, currentNalSize);
+        addLengthPrefixedSample_l(nalBuf);
+        nalBuf->release();
+
+        currentNalStart = nextNalStart;
+    }
+
+    size_t currentNalOffset = currentNalStart - dataStart;
+    buffer->set_range(buffer->range_offset() + currentNalOffset,
+            buffer->range_length() - currentNalOffset);
+    addLengthPrefixedSample_l(buffer);
+
+    return old_offset;
+}
+
 off64_t MPEG4Writer::addLengthPrefixedSample_l(MediaBuffer *buffer) {
     off64_t old_offset = mOffset;
 
@@ -1381,6 +1435,19 @@
     return OK;
 }
 
+status_t MPEG4Writer::setTemporalLayerCount(uint32_t layerCount) {
+    if (layerCount > 9) {
+        return BAD_VALUE;
+    }
+
+    if (layerCount > 0) {
+        mMetaKeys->setInt32(kMetaKey_TemporalLayerCount, layerCount);
+        mMoovExtraSize += sizeof(kMetaKey_TemporalLayerCount) + 4 + 32;
+    }
+
+    return OK;
+}
+
 void MPEG4Writer::write(const void *data, size_t size) {
     write(data, 1, size);
 }
@@ -1470,17 +1537,18 @@
       mPaused(false),
       mResumed(false),
       mStarted(false),
+      mIsMalformed(false),
       mTrackId(trackId),
       mTrackDurationUs(0),
       mEstimatedTrackSizeBytes(0),
       mSamplesHaveSameSize(true),
-      mStszTableEntries(new ListTableEntries<uint32_t>(1000, 1)),
-      mStcoTableEntries(new ListTableEntries<uint32_t>(1000, 1)),
-      mCo64TableEntries(new ListTableEntries<off64_t>(1000, 1)),
-      mStscTableEntries(new ListTableEntries<uint32_t>(1000, 3)),
-      mStssTableEntries(new ListTableEntries<uint32_t>(1000, 1)),
-      mSttsTableEntries(new ListTableEntries<uint32_t>(1000, 2)),
-      mCttsTableEntries(new ListTableEntries<uint32_t>(1000, 2)),
+      mStszTableEntries(new ListTableEntries<uint32_t, 1>(1000)),
+      mStcoTableEntries(new ListTableEntries<uint32_t, 1>(1000)),
+      mCo64TableEntries(new ListTableEntries<off64_t, 1>(1000)),
+      mStscTableEntries(new ListTableEntries<uint32_t, 3>(1000)),
+      mStssTableEntries(new ListTableEntries<uint32_t, 1>(1000)),
+      mSttsTableEntries(new ListTableEntries<uint32_t, 2>(1000)),
+      mCttsTableEntries(new ListTableEntries<uint32_t, 2>(1000)),
       mCodecSpecificData(NULL),
       mCodecSpecificDataSize(0),
       mGotAllCodecSpecificData(false),
@@ -1496,6 +1564,14 @@
     mIsMPEG4 = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_MPEG4) ||
                !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AAC);
 
+    // store temporal layer count
+    if (!mIsAudio) {
+        int32_t count;
+        if (mMeta->findInt32(kKeyTemporalLayerCount, &count) && count > 1) {
+            mOwner->setTemporalLayerCount(count);
+        }
+    }
+
     setTimeScale();
 }
 
@@ -1684,7 +1760,7 @@
         List<MediaBuffer *>::iterator it = chunk->mSamples.begin();
 
         off64_t offset = (chunk->mTrack->isAvc() || chunk->mTrack->isHevc())
-                                ? addLengthPrefixedSample_l(*it)
+                                ? addMultipleLengthPrefixedSamples_l(*it)
                                 : addSample_l(*it);
 
         if (isFirstSample) {
@@ -1874,6 +1950,7 @@
     mEstimatedTrackSizeBytes = 0;
     mMdatSizeBytes = 0;
     mMaxChunkDurationUs = 0;
+    mLastDecodingTimeUs = -1;
 
     pthread_create(&mThread, &attr, ThreadWrapper, this);
     pthread_attr_destroy(&attr);
@@ -2404,12 +2481,16 @@
             ALOGW("Recorded file size exceeds limit %" PRId64 "bytes",
                     mOwner->mMaxFileSizeLimitBytes);
             mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED, 0);
+            copy->release();
+            mSource->stop();
             break;
         }
         if (mOwner->exceedsFileDurationLimit()) {
             ALOGW("Recorded file duration exceeds limit %" PRId64 "microseconds",
                     mOwner->mMaxFileDurationLimitUs);
             mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_DURATION_REACHED, 0);
+            copy->release();
+            mSource->stop();
             break;
         }
 
@@ -2430,13 +2511,17 @@
             int64_t durExcludingEarlierPausesUs = timestampUs - previousPausedDurationUs;
             if (WARN_UNLESS(durExcludingEarlierPausesUs >= 0ll, "for %s track", trackName)) {
                 copy->release();
-                return ERROR_MALFORMED;
+                mSource->stop();
+                mIsMalformed = true;
+                break;
             }
 
             int64_t pausedDurationUs = durExcludingEarlierPausesUs - mTrackDurationUs;
             if (WARN_UNLESS(pausedDurationUs >= lastDurationUs, "for %s track", trackName)) {
                 copy->release();
-                return ERROR_MALFORMED;
+                mSource->stop();
+                mIsMalformed = true;
+                break;
             }
 
             previousPausedDurationUs += pausedDurationUs - lastDurationUs;
@@ -2446,7 +2531,9 @@
         timestampUs -= previousPausedDurationUs;
         if (WARN_UNLESS(timestampUs >= 0ll, "for %s track", trackName)) {
             copy->release();
-            return ERROR_MALFORMED;
+            mSource->stop();
+            mIsMalformed = true;
+            break;
         }
 
         if (!mIsAudio) {
@@ -2458,11 +2545,24 @@
             int64_t decodingTimeUs;
             CHECK(meta_data->findInt64(kKeyDecodingTime, &decodingTimeUs));
             decodingTimeUs -= previousPausedDurationUs;
+
+            // ensure non-negative, monotonic decoding time
+            if (mLastDecodingTimeUs < 0) {
+                decodingTimeUs = std::max((int64_t)0, decodingTimeUs);
+            } else {
+                // increase decoding time by at least 1 tick
+                decodingTimeUs = std::max(
+                        mLastDecodingTimeUs + divUp(1000000, mTimeScale), decodingTimeUs);
+            }
+
+            mLastDecodingTimeUs = decodingTimeUs;
             cttsOffsetTimeUs =
                     timestampUs + kMaxCttsOffsetTimeUs - decodingTimeUs;
             if (WARN_UNLESS(cttsOffsetTimeUs >= 0ll, "for %s track", trackName)) {
                 copy->release();
-                return ERROR_MALFORMED;
+                mSource->stop();
+                mIsMalformed = true;
+                break;
             }
 
             timestampUs = decodingTimeUs;
@@ -2474,7 +2574,9 @@
                     (cttsOffsetTimeUs * mTimeScale + 500000LL) / 1000000LL;
             if (WARN_UNLESS(currCttsOffsetTimeTicks <= 0x0FFFFFFFFLL, "for %s track", trackName)) {
                 copy->release();
-                return ERROR_MALFORMED;
+                mSource->stop();
+                mIsMalformed = true;
+                break;
             }
 
             if (mStszTableEntries->count() == 0) {
@@ -2516,7 +2618,9 @@
 
         if (WARN_UNLESS(timestampUs >= 0ll, "for %s track", trackName)) {
             copy->release();
-            return ERROR_MALFORMED;
+            mSource->stop();
+            mIsMalformed = true;
+            break;
         }
 
         ALOGV("%s media time stamp: %" PRId64 " and previous paused duration %" PRId64,
@@ -2538,7 +2642,8 @@
                     (long long)timestampUs, (long long)lastTimestampUs, trackName);
             copy->release();
             mSource->stop();
-            return UNKNOWN_ERROR;
+            mIsMalformed = true;
+            break;
         }
 
         // if the duration is different for this sample, see if it is close enough to the previous
@@ -2593,7 +2698,7 @@
             trackProgressStatus(timestampUs);
         }
         if (!hasMultipleTracks) {
-            off64_t offset = (mIsAvc || mIsHevc) ? mOwner->addLengthPrefixedSample_l(copy)
+            off64_t offset = (mIsAvc || mIsHevc) ? mOwner->addMultipleLengthPrefixedSamples_l(copy)
                                  : mOwner->addSample_l(copy);
 
             uint32_t count = (mOwner->use32BitFileOffset()
@@ -2694,6 +2799,10 @@
 }
 
 bool MPEG4Writer::Track::isTrackMalFormed() const {
+    if (mIsMalformed) {
+        return true;
+    }
+
     if (mStszTableEntries->count() == 0) {                      // no samples written
         ALOGE("The number of recorded samples is 0");
         return true;
@@ -2944,8 +3053,6 @@
     mOwner->writeInt16(0x18);        // depth
     mOwner->writeInt16(-1);          // predefined
 
-    CHECK_LT(23 + mCodecSpecificDataSize, 128);
-
     if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG4, mime)) {
         writeMp4vEsdsBox();
     } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_H263, mime)) {
@@ -3065,6 +3172,10 @@
 void MPEG4Writer::Track::writeMp4vEsdsBox() {
     CHECK(mCodecSpecificData);
     CHECK_GT(mCodecSpecificDataSize, 0);
+
+    // Make sure all sizes encode to a single byte.
+    CHECK_LT(23 + mCodecSpecificDataSize, 128);
+
     mOwner->beginBox("esds");
 
     mOwner->writeInt32(0);    // version=0, flags=0
@@ -3177,13 +3288,22 @@
 
 void MPEG4Writer::Track::writeMdhdBox(uint32_t now) {
     int64_t trakDurationUs = getDurationUs();
+    int64_t mdhdDuration = (trakDurationUs * mTimeScale + 5E5) / 1E6;
     mOwner->beginBox("mdhd");
-    mOwner->writeInt32(0);             // version=0, flags=0
-    mOwner->writeInt32(now);           // creation time
-    mOwner->writeInt32(now);           // modification time
-    mOwner->writeInt32(mTimeScale);    // media timescale
-    int32_t mdhdDuration = (trakDurationUs * mTimeScale + 5E5) / 1E6;
-    mOwner->writeInt32(mdhdDuration);  // use media timescale
+
+    if (mdhdDuration > UINT32_MAX) {
+        mOwner->writeInt32((1 << 24));            // version=1, flags=0
+        mOwner->writeInt64((int64_t)now);         // creation time
+        mOwner->writeInt64((int64_t)now);         // modification time
+        mOwner->writeInt32(mTimeScale);           // media timescale
+        mOwner->writeInt64(mdhdDuration);         // media timescale
+    } else {
+        mOwner->writeInt32(0);                      // version=0, flags=0
+        mOwner->writeInt32(now);                    // creation time
+        mOwner->writeInt32(now);                    // modification time
+        mOwner->writeInt32(mTimeScale);             // media timescale
+        mOwner->writeInt32((int32_t)mdhdDuration);  // use media timescale
+    }
     // Language follows the three letter standard ISO-639-2/T
     // 'e', 'n', 'g' for "English", for instance.
     // Each character is packed as the difference between its ASCII value and 0x60.
@@ -3312,10 +3432,12 @@
 
     mOwner->beginBox("ctts");
     mOwner->writeInt32(0);  // version=0, flags=0
-    uint32_t duration;
-    CHECK(mCttsTableEntries->get(duration, 1));
-    duration = htonl(duration);  // Back host byte order
-    mCttsTableEntries->set(htonl(duration + getStartTimeOffsetScaledTime() - mMinCttsOffsetTimeUs), 1);
+    uint32_t delta = mMinCttsOffsetTimeUs - getStartTimeOffsetScaledTime();
+    mCttsTableEntries->adjustEntries([delta](size_t /* ix */, uint32_t (&value)[2]) {
+        // entries are <count, ctts> pairs; adjust only ctts
+        uint32_t duration = htonl(value[1]); // back to host byte order
+        value[1] = htonl(duration - delta);
+    });
     mCttsTableEntries->write(mOwner);
     mOwner->endBox();  // ctts
 }
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index b51853e..b088775 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -1791,9 +1791,8 @@
                         err = BAD_VALUE;
                     } else {
                         err = connectToSurface(surface);
-                        if (err == BAD_VALUE) {
-                            // assuming reconnecting to same surface
-                            // TODO: check if it is the same surface
+                        if (err == ALREADY_EXISTS) {
+                            // reconnecting to same surface
                             err = OK;
                         } else {
                             if (err == OK) {
@@ -2161,14 +2160,19 @@
             CHECK(msg->findPointer("buffers", (void **)&dstBuffers));
 
             dstBuffers->clear();
-            const Vector<BufferInfo> &srcBuffers = mPortBuffers[portIndex];
+            // If we're using input surface (either non-persistent created by
+            // createInputSurface(), or persistent set by setInputSurface()),
+            // give the client an empty input buffers array.
+            if (portIndex != kPortIndexInput || !mHaveInputSurface) {
+                const Vector<BufferInfo> &srcBuffers = mPortBuffers[portIndex];
 
-            for (size_t i = 0; i < srcBuffers.size(); ++i) {
-                const BufferInfo &info = srcBuffers.itemAt(i);
+                for (size_t i = 0; i < srcBuffers.size(); ++i) {
+                    const BufferInfo &info = srcBuffers.itemAt(i);
 
-                dstBuffers->push_back(
-                        (portIndex == kPortIndexInput && mCrypto != NULL)
-                                ? info.mEncryptedData : info.mData);
+                    dstBuffers->push_back(
+                            (portIndex == kPortIndexInput && mCrypto != NULL)
+                                    ? info.mEncryptedData : info.mData);
+                }
             }
 
             (new AMessage)->postReply(replyID);
@@ -2683,11 +2687,17 @@
 status_t MediaCodec::connectToSurface(const sp<Surface> &surface) {
     status_t err = OK;
     if (surface != NULL) {
+        uint64_t oldId, newId;
+        if (mSurface != NULL
+                && surface->getUniqueId(&newId) == NO_ERROR
+                && mSurface->getUniqueId(&oldId) == NO_ERROR
+                && newId == oldId) {
+            ALOGI("[%s] connecting to the same surface. Nothing to do.", mComponentName.c_str());
+            return ALREADY_EXISTS;
+        }
+
         err = native_window_api_connect(surface.get(), NATIVE_WINDOW_API_MEDIA);
-        if (err == BAD_VALUE) {
-            ALOGI("native window already connected. Assuming no change of surface");
-            return err;
-        } else if (err == OK) {
+        if (err == OK) {
             // Require a fresh set of buffers after each connect by using a unique generation
             // number. Rely on the fact that max supported process id by Linux is 2^22.
             // PID is never 0 so we don't have to worry that we use the default generation of 0.
@@ -2709,7 +2719,8 @@
             ALOGE("native_window_api_connect returned an error: %s (%d)", strerror(-err), err);
         }
     }
-    return err;
+    // do not return ALREADY_EXISTS unless surfaces are the same
+    return err == ALREADY_EXISTS ? BAD_VALUE : err;
 }
 
 status_t MediaCodec::disconnectFromSurface() {
diff --git a/media/libstagefright/MediaCodecSource.cpp b/media/libstagefright/MediaCodecSource.cpp
index d7cf1e9..35c07ca 100644
--- a/media/libstagefright/MediaCodecSource.cpp
+++ b/media/libstagefright/MediaCodecSource.cpp
@@ -336,10 +336,21 @@
     return NULL;
 }
 
-void MediaCodecSource::setInputBufferTimeOffset(int64_t timeOffsetUs) {
+status_t MediaCodecSource::setInputBufferTimeOffset(int64_t timeOffsetUs) {
     sp<AMessage> msg = new AMessage(kWhatSetInputBufferTimeOffset, mReflector);
     msg->setInt64("time-offset-us", timeOffsetUs);
-    postSynchronouslyAndReturnError(msg);
+    return postSynchronouslyAndReturnError(msg);
+}
+
+int64_t MediaCodecSource::getFirstSampleSystemTimeUs() {
+    sp<AMessage> msg = new AMessage(kWhatGetFirstSampleSystemTimeUs, mReflector);
+    sp<AMessage> response;
+    msg->postAndAwaitResponse(&response);
+    int64_t timeUs;
+    if (!response->findInt64("time-us", &timeUs)) {
+        timeUs = -1ll;
+    }
+    return timeUs;
 }
 
 status_t MediaCodecSource::start(MetaData* params) {
@@ -408,6 +419,8 @@
       mEncoderDataSpace(0),
       mGraphicBufferConsumer(consumer),
       mInputBufferTimeOffsetUs(0),
+      mFirstSampleSystemTimeUs(-1ll),
+      mPausePending(false),
       mFirstSampleTimeUs(-1ll),
       mGeneration(0) {
     CHECK(mLooper != NULL);
@@ -646,6 +659,17 @@
 
         if (mbuf != NULL) {
             CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
+            if (mFirstSampleSystemTimeUs < 0ll) {
+                mFirstSampleSystemTimeUs = systemTime() / 1000;
+                if (mPausePending) {
+                    mPausePending = false;
+                    onPause();
+                    mbuf->release();
+                    mAvailEncoderInputIndices.push_back(bufferIndex);
+                    return OK;
+                }
+            }
+
             timeUs += mInputBufferTimeOffsetUs;
 
             // push decoding time for video, or drift time for audio
@@ -656,7 +680,6 @@
                 if (mFirstSampleTimeUs < 0ll) {
                     mFirstSampleTimeUs = timeUs;
                 }
-
                 int64_t driftTimeUs = 0;
                 if (mbuf->meta_data()->findInt64(kKeyDriftTime, &driftTimeUs)
                         && driftTimeUs) {
@@ -708,6 +731,10 @@
 
     if (mStarted) {
         ALOGI("MediaCodecSource (%s) resuming", mIsVideo ? "video" : "audio");
+        if (mPausePending) {
+            mPausePending = false;
+            return OK;
+        }
         if (mIsVideo) {
             mEncoder->requestIDRFrame();
         }
@@ -754,6 +781,15 @@
     return OK;
 }
 
+void MediaCodecSource::onPause() {
+    if (mFlags & FLAG_USE_SURFACE_INPUT) {
+        suspend();
+    } else {
+        CHECK(mPuller != NULL);
+        mPuller->pause();
+    }
+}
+
 void MediaCodecSource::onMessageReceived(const sp<AMessage> &msg) {
     switch (msg->what()) {
     case kWhatPullerNotify:
@@ -823,15 +859,23 @@
             }
 
             MediaBuffer *mbuf = new MediaBuffer(outbuf->size());
-            memcpy(mbuf->data(), outbuf->data(), outbuf->size());
+            mbuf->setObserver(this);
+            mbuf->add_ref();
 
             if (!(flags & MediaCodec::BUFFER_FLAG_CODECCONFIG)) {
                 if (mIsVideo) {
                     int64_t decodingTimeUs;
                     if (mFlags & FLAG_USE_SURFACE_INPUT) {
-                        // Time offset is not applied at
-                        // feedEncoderInputBuffer() in surface input case.
-                        timeUs += mInputBufferTimeOffsetUs;
+                        if (mFirstSampleSystemTimeUs < 0ll) {
+                            mFirstSampleSystemTimeUs = systemTime() / 1000;
+                            if (mPausePending) {
+                                mPausePending = false;
+                                onPause();
+                                mbuf->release();
+                                break;
+                            }
+                        }
+                        // Timestamp offset is already adjusted in GraphicBufferSource.
                         // GraphicBufferSource is supposed to discard samples
                         // queued before start, and offset timeUs by start time
                         CHECK_GE(timeUs, 0ll);
@@ -867,8 +911,7 @@
             if (flags & MediaCodec::BUFFER_FLAG_SYNCFRAME) {
                 mbuf->meta_data()->setInt32(kKeyIsSyncFrame, true);
             }
-            mbuf->setObserver(this);
-            mbuf->add_ref();
+            memcpy(mbuf->data(), outbuf->data(), outbuf->size());
 
             {
                 Mutexed<Output>::Locked output(mOutput);
@@ -959,11 +1002,10 @@
 
     case kWhatPause:
     {
-        if (mFlags & FLAG_USE_SURFACE_INPUT) {
-            suspend();
+        if (mFirstSampleSystemTimeUs < 0) {
+            mPausePending = true;
         } else {
-            CHECK(mPuller != NULL);
-            mPuller->pause();
+            onPause();
         }
         break;
     }
@@ -971,10 +1013,28 @@
     {
         sp<AReplyToken> replyID;
         CHECK(msg->senderAwaitsResponse(&replyID));
-
+        status_t err = OK;
         CHECK(msg->findInt64("time-offset-us", &mInputBufferTimeOffsetUs));
 
+        // Propagate the timestamp offset to GraphicBufferSource.
+        if (mIsVideo) {
+            sp<AMessage> params = new AMessage;
+            params->setInt64("time-offset-us", mInputBufferTimeOffsetUs);
+            err = mEncoder->setParameters(params);
+        }
+
         sp<AMessage> response = new AMessage;
+        response->setInt32("err", err);
+        response->postReply(replyID);
+        break;
+    }
+    case kWhatGetFirstSampleSystemTimeUs:
+    {
+        sp<AReplyToken> replyID;
+        CHECK(msg->senderAwaitsResponse(&replyID));
+
+        sp<AMessage> response = new AMessage;
+        response->setInt64("time-us", mFirstSampleSystemTimeUs);
         response->postReply(replyID);
         break;
     }
diff --git a/media/libstagefright/MediaExtractor.cpp b/media/libstagefright/MediaExtractor.cpp
index 1c6c882..92ce88c 100644
--- a/media/libstagefright/MediaExtractor.cpp
+++ b/media/libstagefright/MediaExtractor.cpp
@@ -88,6 +88,7 @@
     virtual void close();
     virtual uint32_t getFlags();
     virtual String8 toString();
+    virtual sp<DecryptHandle> DrmInitialization(const char *mime);
 
 private:
     sp<IMemory> mMemory;
@@ -134,6 +135,10 @@
     return mName;
 }
 
+sp<DecryptHandle> RemoteDataSource::DrmInitialization(const char *mime) {
+    return mSource->DrmInitialization(mime);
+}
+
 // static
 sp<IMediaExtractor> MediaExtractor::Create(
         const sp<DataSource> &source, const char *mime) {
@@ -146,10 +151,6 @@
         ALOGW("creating media extractor in calling process");
         return CreateFromService(source, mime);
     } else {
-        // remote extractor
-        ALOGV("get service manager");
-        sp<IBinder> binder = defaultServiceManager()->getService(String16("media.extractor"));
-
         // Check if it's WVM, since WVMExtractor needs to be created in the media server process,
         // not the extractor process.
         String8 mime8;
@@ -160,6 +161,21 @@
             return new WVMExtractor(source);
         }
 
+        // Check if it's es-based DRM, since DRMExtractor needs to be created in the media server
+        // process, not the extractor process.
+        if (SniffDRM(source, &mime8, &confidence, &meta)) {
+            const char *drmMime = mime8.string();
+            ALOGV("Detected media content as '%s' with confidence %.2f", drmMime, confidence);
+            if (!strncmp(drmMime, "drm+es_based+", 13)) {
+                // DRMExtractor sets container metadata kKeyIsDRM to 1
+                return new DRMExtractor(source, drmMime + 14);
+            }
+        }
+
+        // remote extractor
+        ALOGV("get service manager");
+        sp<IBinder> binder = defaultServiceManager()->getService(String16("media.extractor"));
+
         if (binder != 0) {
             sp<IMediaExtractorService> mediaExService(interface_cast<IMediaExtractorService>(binder));
             sp<IMediaExtractor> ex = mediaExService->makeExtractor(RemoteDataSource::wrap(source), mime);
diff --git a/media/libstagefright/NuMediaExtractor.cpp b/media/libstagefright/NuMediaExtractor.cpp
index a669dca..276d731 100644
--- a/media/libstagefright/NuMediaExtractor.cpp
+++ b/media/libstagefright/NuMediaExtractor.cpp
@@ -305,7 +305,10 @@
 
     sp<IMediaSource> source = mImpl->getTrack(index);
 
-    CHECK_EQ((status_t)OK, source->start());
+    status_t ret = source->start();
+    if (ret != OK) {
+        return ret;
+    }
 
     mSelectedTracks.push();
     TrackInfo *info = &mSelectedTracks.editItemAt(mSelectedTracks.size() - 1);
diff --git a/media/libstagefright/OMXClient.cpp b/media/libstagefright/OMXClient.cpp
index e994069..e40dbcf 100644
--- a/media/libstagefright/OMXClient.cpp
+++ b/media/libstagefright/OMXClient.cpp
@@ -303,6 +303,12 @@
 status_t MuxOMX::freeNode(node_id node) {
     Mutex::Autolock autoLock(mLock);
 
+    // exit if we have already freed the node
+    if (mNodeLocation.indexOfKey(node) < 0) {
+        ALOGD("MuxOMX::freeNode: node %d seems to be released already --- ignoring.", node);
+        return OK;
+    }
+
     status_t err = getOMX_l(node)->freeNode(node);
 
     if (err != OK) {
diff --git a/media/libstagefright/SampleIterator.cpp b/media/libstagefright/SampleIterator.cpp
index ad7b6fd..4134698 100644
--- a/media/libstagefright/SampleIterator.cpp
+++ b/media/libstagefright/SampleIterator.cpp
@@ -94,8 +94,6 @@
         + mFirstChunk;
 
     if (!mInitialized || chunk != mCurrentChunkIndex) {
-        mCurrentChunkIndex = chunk;
-
         status_t err;
         if ((err = getChunkOffset(chunk, &mCurrentChunkOffset)) != OK) {
             ALOGE("getChunkOffset return error");
@@ -106,18 +104,21 @@
 
         uint32_t firstChunkSampleIndex =
             mFirstChunkSampleIndex
-                + mSamplesPerChunk * (mCurrentChunkIndex - mFirstChunk);
+                + mSamplesPerChunk * (chunk - mFirstChunk);
 
         for (uint32_t i = 0; i < mSamplesPerChunk; ++i) {
             size_t sampleSize;
             if ((err = getSampleSizeDirect(
                             firstChunkSampleIndex + i, &sampleSize)) != OK) {
                 ALOGE("getSampleSizeDirect return error");
+                mCurrentChunkSampleSizes.clear();
                 return err;
             }
 
             mCurrentChunkSampleSizes.push(sampleSize);
         }
+
+        mCurrentChunkIndex = chunk;
     }
 
     uint32_t chunkRelativeSampleIndex =
@@ -304,8 +305,16 @@
         return ERROR_OUT_OF_RANGE;
     }
 
-    while (sampleIndex >= mTTSSampleIndex + mTTSCount) {
-        if (mTimeToSampleIndex == mTable->mTimeToSampleCount) {
+    while (true) {
+        if (mTTSSampleIndex > UINT32_MAX - mTTSCount) {
+            return ERROR_OUT_OF_RANGE;
+        }
+        if(sampleIndex < mTTSSampleIndex + mTTSCount) {
+            break;
+        }
+        if (mTimeToSampleIndex == mTable->mTimeToSampleCount ||
+            (mTTSDuration != 0 && mTTSCount > UINT32_MAX / mTTSDuration) ||
+            mTTSSampleTime > UINT32_MAX - (mTTSCount * mTTSDuration)) {
             return ERROR_OUT_OF_RANGE;
         }
 
diff --git a/media/libstagefright/SampleTable.cpp b/media/libstagefright/SampleTable.cpp
index 8e49e9b..8061bc6 100644
--- a/media/libstagefright/SampleTable.cpp
+++ b/media/libstagefright/SampleTable.cpp
@@ -18,6 +18,8 @@
 //#define LOG_NDEBUG 0
 #include <utils/Log.h>
 
+#include <limits>
+
 #include "include/SampleTable.h"
 #include "include/SampleIterator.h"
 
@@ -45,6 +47,8 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
+const off64_t kMaxOffset = std::numeric_limits<off64_t>::max();
+
 struct SampleTable::CompositionDeltaLookup {
     CompositionDeltaLookup();
 
@@ -123,7 +127,7 @@
       mNumSampleSizes(0),
       mHasTimeToSample(false),
       mTimeToSampleCount(0),
-      mTimeToSample(),
+      mTimeToSample(NULL),
       mSampleTimeEntries(NULL),
       mCompositionTimeDeltaEntries(NULL),
       mNumCompositionTimeDeltaEntries(0),
@@ -132,7 +136,8 @@
       mNumSyncSamples(0),
       mSyncSamples(NULL),
       mLastSyncSampleIndex(0),
-      mSampleToChunkEntries(NULL) {
+      mSampleToChunkEntries(NULL),
+      mTotalSize(0) {
     mSampleIterator = new SampleIterator(this);
 }
 
@@ -143,6 +148,9 @@
     delete[] mSyncSamples;
     mSyncSamples = NULL;
 
+    delete[] mTimeToSample;
+    mTimeToSample = NULL;
+
     delete mCompositionDeltaLookup;
     mCompositionDeltaLookup = NULL;
 
@@ -234,27 +242,55 @@
 
     mNumSampleToChunkOffsets = U32_AT(&header[4]);
 
-    if ((data_size - 8) / 12 < mNumSampleToChunkOffsets) {
+    if ((data_size - 8) / sizeof(SampleToChunkEntry) < mNumSampleToChunkOffsets) {
         return ERROR_MALFORMED;
     }
 
-    if (SIZE_MAX / sizeof(SampleToChunkEntry) <= (size_t)mNumSampleToChunkOffsets)
+    if ((uint64_t)kMaxTotalSize / sizeof(SampleToChunkEntry) <=
+            (uint64_t)mNumSampleToChunkOffsets) {
+        ALOGE("Sample-to-chunk table size too large.");
         return ERROR_OUT_OF_RANGE;
+    }
+
+    mTotalSize += (uint64_t)mNumSampleToChunkOffsets *
+            sizeof(SampleToChunkEntry);
+    if (mTotalSize > kMaxTotalSize) {
+        ALOGE("Sample-to-chunk table size would make sample table too large.\n"
+              "    Requested sample-to-chunk table size = %llu\n"
+              "    Eventual sample table size >= %llu\n"
+              "    Allowed sample table size = %llu\n",
+              (unsigned long long)mNumSampleToChunkOffsets *
+                      sizeof(SampleToChunkEntry),
+              (unsigned long long)mTotalSize,
+              (unsigned long long)kMaxTotalSize);
+        return ERROR_OUT_OF_RANGE;
+    }
 
     mSampleToChunkEntries =
         new (std::nothrow) SampleToChunkEntry[mNumSampleToChunkOffsets];
-    if (!mSampleToChunkEntries)
+    if (!mSampleToChunkEntries) {
+        ALOGE("Cannot allocate sample-to-chunk table with %llu entries.",
+                (unsigned long long)mNumSampleToChunkOffsets);
         return ERROR_OUT_OF_RANGE;
+    }
+
+    if (mNumSampleToChunkOffsets == 0) {
+        return OK;
+    }
+
+    if ((off64_t)(kMaxOffset - 8 -
+            ((mNumSampleToChunkOffsets - 1) * sizeof(SampleToChunkEntry)))
+            < mSampleToChunkOffset) {
+        return ERROR_MALFORMED;
+    }
 
     for (uint32_t i = 0; i < mNumSampleToChunkOffsets; ++i) {
-        uint8_t buffer[12];
-
-        if ((SIZE_MAX - 8 - (i * 12)) < (size_t)mSampleToChunkOffset) {
-            return ERROR_MALFORMED;
-        }
+        uint8_t buffer[sizeof(SampleToChunkEntry)];
 
         if (mDataSource->readAt(
-                    mSampleToChunkOffset + 8 + i * 12, buffer, sizeof(buffer))
+                    mSampleToChunkOffset + 8 + i * sizeof(SampleToChunkEntry),
+                    buffer,
+                    sizeof(buffer))
                 != (ssize_t)sizeof(buffer)) {
             return ERROR_IO;
         }
@@ -355,28 +391,48 @@
     }
 
     mTimeToSampleCount = U32_AT(&header[4]);
-    if ((uint64_t)mTimeToSampleCount >
-        (uint64_t)UINT32_MAX / (2 * sizeof(uint32_t))) {
+    if (mTimeToSampleCount > UINT32_MAX / (2 * sizeof(uint32_t))) {
         // Choose this bound because
         // 1) 2 * sizeof(uint32_t) is the amount of memory needed for one
         //    time-to-sample entry in the time-to-sample table.
         // 2) mTimeToSampleCount is the number of entries of the time-to-sample
         //    table.
         // 3) We hope that the table size does not exceed UINT32_MAX.
-        ALOGE("  Error: Time-to-sample table size too large.");
+        ALOGE("Time-to-sample table size too large.");
         return ERROR_OUT_OF_RANGE;
     }
 
     // Note: At this point, we know that mTimeToSampleCount * 2 will not
     // overflow because of the above condition.
-    if (!mDataSource->getVector(data_offset + 8, &mTimeToSample,
-                                mTimeToSampleCount * 2)) {
-        ALOGE("  Error: Incomplete data read for time-to-sample table.");
+
+    uint64_t allocSize = (uint64_t)mTimeToSampleCount * 2 * sizeof(uint32_t);
+    mTotalSize += allocSize;
+    if (mTotalSize > kMaxTotalSize) {
+        ALOGE("Time-to-sample table size would make sample table too large.\n"
+              "    Requested time-to-sample table size = %llu\n"
+              "    Eventual sample table size >= %llu\n"
+              "    Allowed sample table size = %llu\n",
+              (unsigned long long)allocSize,
+              (unsigned long long)mTotalSize,
+              (unsigned long long)kMaxTotalSize);
+        return ERROR_OUT_OF_RANGE;
+    }
+
+    mTimeToSample = new (std::nothrow) uint32_t[mTimeToSampleCount * 2];
+    if (!mTimeToSample) {
+        ALOGE("Cannot allocate time-to-sample table with %llu entries.",
+                (unsigned long long)mTimeToSampleCount);
+        return ERROR_OUT_OF_RANGE;
+    }
+
+    if (mDataSource->readAt(data_offset + 8, mTimeToSample,
+            (size_t)allocSize) < (ssize_t)allocSize) {
+        ALOGE("Incomplete data read for time-to-sample table.");
         return ERROR_IO;
     }
 
-    for (size_t i = 0; i < mTimeToSample.size(); ++i) {
-        mTimeToSample.editItemAt(i) = ntohl(mTimeToSample[i]);
+    for (size_t i = 0; i < mTimeToSampleCount * 2; ++i) {
+        mTimeToSample[i] = ntohl(mTimeToSample[i]);
     }
 
     mHasTimeToSample = true;
@@ -418,18 +474,33 @@
     }
 
     mNumCompositionTimeDeltaEntries = numEntries;
-    uint64_t allocSize = (uint64_t)numEntries * 2 * sizeof(uint32_t);
-    if (allocSize > UINT32_MAX) {
+    uint64_t allocSize = (uint64_t)numEntries * 2 * sizeof(int32_t);
+    if (allocSize > kMaxTotalSize) {
+        ALOGE("Composition-time-to-sample table size too large.");
+        return ERROR_OUT_OF_RANGE;
+    }
+
+    mTotalSize += allocSize;
+    if (mTotalSize > kMaxTotalSize) {
+        ALOGE("Composition-time-to-sample table would make sample table too large.\n"
+              "    Requested composition-time-to-sample table size = %llu\n"
+              "    Eventual sample table size >= %llu\n"
+              "    Allowed sample table size = %llu\n",
+              (unsigned long long)allocSize,
+              (unsigned long long)mTotalSize,
+              (unsigned long long)kMaxTotalSize);
         return ERROR_OUT_OF_RANGE;
     }
 
     mCompositionTimeDeltaEntries = new (std::nothrow) int32_t[2 * numEntries];
-    if (!mCompositionTimeDeltaEntries)
+    if (!mCompositionTimeDeltaEntries) {
+        ALOGE("Cannot allocate composition-time-to-sample table with %llu "
+                "entries.", (unsigned long long)numEntries);
         return ERROR_OUT_OF_RANGE;
+    }
 
-    if (mDataSource->readAt(
-                data_offset + 8, mCompositionTimeDeltaEntries, numEntries * 8)
-            < (ssize_t)numEntries * 8) {
+    if (mDataSource->readAt(data_offset + 8, mCompositionTimeDeltaEntries,
+            (size_t)allocSize) < (ssize_t)allocSize) {
         delete[] mCompositionTimeDeltaEntries;
         mCompositionTimeDeltaEntries = NULL;
 
@@ -470,18 +541,33 @@
         ALOGV("Table of sync samples is empty or has only a single entry!");
     }
 
-    uint64_t allocSize = mNumSyncSamples * (uint64_t)sizeof(uint32_t);
-    if (allocSize > SIZE_MAX) {
+    uint64_t allocSize = (uint64_t)mNumSyncSamples * sizeof(uint32_t);
+    if (allocSize > kMaxTotalSize) {
+        ALOGE("Sync sample table size too large.");
+        return ERROR_OUT_OF_RANGE;
+    }
+
+    mTotalSize += allocSize;
+    if (mTotalSize > kMaxTotalSize) {
+        ALOGE("Sync sample table size would make sample table too large.\n"
+              "    Requested sync sample table size = %llu\n"
+              "    Eventual sample table size >= %llu\n"
+              "    Allowed sample table size = %llu\n",
+              (unsigned long long)allocSize,
+              (unsigned long long)mTotalSize,
+              (unsigned long long)kMaxTotalSize);
         return ERROR_OUT_OF_RANGE;
     }
 
     mSyncSamples = new (std::nothrow) uint32_t[mNumSyncSamples];
-    if (!mSyncSamples)
+    if (!mSyncSamples) {
+        ALOGE("Cannot allocate sync sample table with %llu entries.",
+                (unsigned long long)mNumSyncSamples);
         return ERROR_OUT_OF_RANGE;
+    }
 
-    size_t size = mNumSyncSamples * sizeof(uint32_t);
-    if (mDataSource->readAt(mSyncSampleOffset + 8, mSyncSamples, size)
-            != (ssize_t)size) {
+    if (mDataSource->readAt(mSyncSampleOffset + 8, mSyncSamples,
+            (size_t)allocSize) != (ssize_t)allocSize) {
         return ERROR_IO;
     }
 
@@ -553,9 +639,24 @@
         return;
     }
 
-    mSampleTimeEntries = new (std::nothrow) SampleTimeEntry[mNumSampleSizes];
-    if (!mSampleTimeEntries)
+    mTotalSize += (uint64_t)mNumSampleSizes * sizeof(SampleTimeEntry);
+    if (mTotalSize > kMaxTotalSize) {
+        ALOGE("Sample entry table size would make sample table too large.\n"
+              "    Requested sample entry table size = %llu\n"
+              "    Eventual sample table size >= %llu\n"
+              "    Allowed sample table size = %llu\n",
+              (unsigned long long)mNumSampleSizes * sizeof(SampleTimeEntry),
+              (unsigned long long)mTotalSize,
+              (unsigned long long)kMaxTotalSize);
         return;
+    }
+
+    mSampleTimeEntries = new (std::nothrow) SampleTimeEntry[mNumSampleSizes];
+    if (!mSampleTimeEntries) {
+        ALOGE("Cannot allocate sample entry table with %llu entries.",
+                (unsigned long long)mNumSampleSizes);
+        return;
+    }
 
     uint32_t sampleIndex = 0;
     uint32_t sampleTime = 0;
diff --git a/media/libstagefright/SimpleDecodingSource.cpp b/media/libstagefright/SimpleDecodingSource.cpp
index 1b44a00..de21c5e 100644
--- a/media/libstagefright/SimpleDecodingSource.cpp
+++ b/media/libstagefright/SimpleDecodingSource.cpp
@@ -43,7 +43,9 @@
     CHECK(meta->findCString(kKeyMIMEType, &mime));
 
     sp<AMessage> format = new AMessage;
-    convertMetaDataToMessage(source->getFormat(), &format);
+    if (convertMetaDataToMessage(source->getFormat(), &format) != OK) {
+        return NULL;
+    }
 
     Vector<AString> matchingCodecs;
     MediaCodecList::findMatchingCodecs(
diff --git a/media/libstagefright/StagefrightMediaScanner.cpp b/media/libstagefright/StagefrightMediaScanner.cpp
index db33e83..f0c27ac 100644
--- a/media/libstagefright/StagefrightMediaScanner.cpp
+++ b/media/libstagefright/StagefrightMediaScanner.cpp
@@ -40,7 +40,7 @@
         ".mpeg", ".ogg", ".mid", ".smf", ".imy", ".wma", ".aac",
         ".wav", ".amr", ".midi", ".xmf", ".rtttl", ".rtx", ".ota",
         ".mkv", ".mka", ".webm", ".ts", ".fl", ".flac", ".mxmf",
-        ".avi", ".mpeg", ".mpg", ".awb", ".mpga"
+        ".avi", ".mpeg", ".mpg", ".awb", ".mpga", ".mov"
     };
     static const size_t kNumValidExtensions =
         sizeof(kValidExtensions) / sizeof(kValidExtensions[0]);
@@ -122,6 +122,7 @@
         { "writer", METADATA_KEY_WRITER },
         { "compilation", METADATA_KEY_COMPILATION },
         { "isdrm", METADATA_KEY_IS_DRM },
+        { "date", METADATA_KEY_DATE },
         { "width", METADATA_KEY_VIDEO_WIDTH },
         { "height", METADATA_KEY_VIDEO_HEIGHT },
     };
diff --git a/media/libstagefright/StagefrightMetadataRetriever.cpp b/media/libstagefright/StagefrightMetadataRetriever.cpp
index a62e1a2..be5067d 100644
--- a/media/libstagefright/StagefrightMetadataRetriever.cpp
+++ b/media/libstagefright/StagefrightMetadataRetriever.cpp
@@ -22,6 +22,7 @@
 #include <utils/Log.h>
 #include <gui/Surface.h>
 
+#include "include/avc_utils.h"
 #include "include/StagefrightMetadataRetriever.h"
 
 #include <media/ICrypto.h>
@@ -157,6 +158,15 @@
     // TODO: Use Flexible color instead
     videoFormat->setInt32("color-format", OMX_COLOR_FormatYUV420Planar);
 
+    // For the thumbnail extraction case, try to allocate single buffer in both
+    // input and output ports, if seeking to a sync frame. NOTE: This request may
+    // fail if component requires more than that for decoding.
+    bool isSeekingClosest = (seekMode == MediaSource::ReadOptions::SEEK_CLOSEST);
+    if (!isSeekingClosest) {
+        videoFormat->setInt32("android._num-input-buffers", 1);
+        videoFormat->setInt32("android._num-output-buffers", 1);
+    }
+
     status_t err;
     sp<ALooper> looper = new ALooper;
     looper->start();
@@ -237,6 +247,18 @@
     int64_t timeUs;
     size_t retriesLeft = kRetryCount;
     bool done = false;
+    const char *mime;
+    bool success = format->findCString(kKeyMIMEType, &mime);
+    if (!success) {
+        ALOGE("Could not find mime type");
+        return NULL;
+    }
+
+    bool isAvcOrHevc = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC)
+            || !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_HEVC);
+
+    bool firstSample = true;
+    int64_t targetTimeUs = -1ll;
 
     do {
         size_t inputIndex = -1;
@@ -264,6 +286,11 @@
                 haveMoreInputs = false;
                 break;
             }
+            if (firstSample && isSeekingClosest) {
+                mediaBuffer->meta_data()->findInt64(kKeyTargetTime, &targetTimeUs);
+                ALOGV("Seeking closest: targetTimeUs=%lld", (long long)targetTimeUs);
+            }
+            firstSample = false;
 
             if (mediaBuffer->range_length() > codecBuffer->capacity()) {
                 ALOGE("buffer size (%zu) too large for codec input size (%zu)",
@@ -276,6 +303,12 @@
                 memcpy(codecBuffer->data(),
                         (const uint8_t*)mediaBuffer->data() + mediaBuffer->range_offset(),
                         mediaBuffer->range_length());
+                if (isAvcOrHevc && IsIDR(codecBuffer) && !isSeekingClosest) {
+                    // Only need to decode one IDR frame, unless we're seeking with CLOSEST
+                    // option, in which case we need to actually decode to targetTimeUs.
+                    haveMoreInputs = false;
+                    flags |= MediaCodec::BUFFER_FLAG_EOS;
+                }
             }
 
             mediaBuffer->release();
@@ -319,8 +352,13 @@
                     ALOGV("Timed-out waiting for output.. retries left = %zu", retriesLeft);
                     err = OK;
                 } else if (err == OK) {
-                    ALOGV("Received an output buffer");
-                    done = true;
+                    // If we're seeking with CLOSEST option and obtained a valid targetTimeUs
+                    // from the extractor, decode to the specified frame. Otherwise we're done.
+                    done = (targetTimeUs < 0ll) || (timeUs >= targetTimeUs);
+                    ALOGV("Received an output buffer, timeUs=%lld", (long long)timeUs);
+                    if (!done) {
+                        err = decoder->releaseOutputBuffer(index);
+                    }
                 } else {
                     ALOGW("Received error %d (%s) instead of output", err, asString(err));
                     done = true;
diff --git a/media/libstagefright/SurfaceUtils.cpp b/media/libstagefright/SurfaceUtils.cpp
index 9940822..568837a 100644
--- a/media/libstagefright/SurfaceUtils.cpp
+++ b/media/libstagefright/SurfaceUtils.cpp
@@ -26,8 +26,25 @@
 
 status_t setNativeWindowSizeFormatAndUsage(
         ANativeWindow *nativeWindow /* nonnull */,
-        int width, int height, int format, int rotation, int usage) {
-    status_t err = native_window_set_buffers_dimensions(nativeWindow, width, height);
+        int width, int height, int format, int rotation, int usage, bool reconnect) {
+    status_t err = NO_ERROR;
+
+    // In some cases we need to reconnect so that we can dequeue all buffers
+    if (reconnect) {
+        err = native_window_api_disconnect(nativeWindow, NATIVE_WINDOW_API_MEDIA);
+        if (err != NO_ERROR) {
+            ALOGE("native_window_api_disconnect failed: %s (%d)", strerror(-err), -err);
+            return err;
+        }
+
+        err = native_window_api_connect(nativeWindow, NATIVE_WINDOW_API_MEDIA);
+        if (err != NO_ERROR) {
+            ALOGE("native_window_api_connect failed: %s (%d)", strerror(-err), -err);
+            return err;
+        }
+    }
+
+    err = native_window_set_buffers_dimensions(nativeWindow, width, height);
     if (err != NO_ERROR) {
         ALOGE("native_window_set_buffers_dimensions failed: %s (%d)", strerror(-err), -err);
         return err;
@@ -124,7 +141,8 @@
     }
 
     err = setNativeWindowSizeFormatAndUsage(
-            nativeWindow, 1, 1, HAL_PIXEL_FORMAT_RGBX_8888, 0, GRALLOC_USAGE_SW_WRITE_OFTEN);
+            nativeWindow, 1, 1, HAL_PIXEL_FORMAT_RGBX_8888, 0, GRALLOC_USAGE_SW_WRITE_OFTEN,
+            false /* reconnect */);
     if (err != NO_ERROR) {
         goto error;
     }
diff --git a/media/libstagefright/Utils.cpp b/media/libstagefright/Utils.cpp
index 2b3fd7b..36be7a0 100644
--- a/media/libstagefright/Utils.cpp
+++ b/media/libstagefright/Utils.cpp
@@ -22,6 +22,7 @@
 #include <sys/stat.h>
 
 #include <utility>
+#include <vector>
 
 #include "include/ESDS.h"
 #include "include/HevcUtils.h"
@@ -1316,6 +1317,20 @@
         }
 
         convertMessageToMetaDataColorAspects(msg, meta);
+
+        AString tsSchema;
+        if (msg->findString("ts-schema", &tsSchema)) {
+            unsigned int numLayers = 0;
+            unsigned int numBLayers = 0;
+            char dummy;
+            int tags = sscanf(tsSchema.c_str(), "android.generic.%u%c%u%c",
+                    &numLayers, &dummy, &numBLayers, &dummy);
+            if ((tags == 1 || (tags == 3 && dummy == '+'))
+                    && numLayers > 0 && numLayers < UINT32_MAX - numBLayers
+                    && numLayers + numBLayers <= INT32_MAX) {
+                meta->setInt32(kKeyTemporalLayerCount, numLayers + numBLayers);
+            }
+        }
     } else if (mime.startsWith("audio/")) {
         int32_t numChannels;
         if (msg->findInt32("channel-count", &numChannels)) {
@@ -1377,24 +1392,24 @@
     // reassemble the csd data into its original form
     sp<ABuffer> csd0, csd1, csd2;
     if (msg->findBuffer("csd-0", &csd0)) {
+        int csd0size = csd0->size();
         if (mime == MEDIA_MIMETYPE_VIDEO_AVC) {
             sp<ABuffer> csd1;
             if (msg->findBuffer("csd-1", &csd1)) {
-                char avcc[1024]; // that oughta be enough, right?
-                size_t outsize = reassembleAVCC(csd0, csd1, avcc);
-                meta->setData(kKeyAVCC, kKeyAVCC, avcc, outsize);
+                std::vector<char> avcc(csd0size + csd1->size() + 1024);
+                size_t outsize = reassembleAVCC(csd0, csd1, avcc.data());
+                meta->setData(kKeyAVCC, kKeyAVCC, avcc.data(), outsize);
             }
         } else if (mime == MEDIA_MIMETYPE_AUDIO_AAC || mime == MEDIA_MIMETYPE_VIDEO_MPEG4) {
-            int csd0size = csd0->size();
-            char esds[csd0size + 31];
+            std::vector<char> esds(csd0size + 31);
             // The written ESDS is actually for an audio stream, but it's enough
             // for transporting the CSD to muxers.
-            reassembleESDS(csd0, esds);
-            meta->setData(kKeyESDS, kKeyESDS, esds, sizeof(esds));
+            reassembleESDS(csd0, esds.data());
+            meta->setData(kKeyESDS, kKeyESDS, esds.data(), esds.size());
         } else if (mime == MEDIA_MIMETYPE_VIDEO_HEVC) {
-            uint8_t hvcc[1024]; // that oughta be enough, right?
-            size_t outsize = reassembleHVCC(csd0, hvcc, 1024, 4);
-            meta->setData(kKeyHVCC, kKeyHVCC, hvcc, outsize);
+            std::vector<uint8_t> hvcc(csd0size + 1024);
+            size_t outsize = reassembleHVCC(csd0, hvcc.data(), hvcc.size(), 4);
+            meta->setData(kKeyHVCC, kKeyHVCC, hvcc.data(), outsize);
         } else if (mime == MEDIA_MIMETYPE_VIDEO_VP9) {
             meta->setData(kKeyVp9CodecPrivate, 0, csd0->data(), csd0->size());
         } else if (mime == MEDIA_MIMETYPE_AUDIO_OPUS) {
diff --git a/media/libstagefright/WAVExtractor.cpp b/media/libstagefright/WAVExtractor.cpp
index 4bc2c6d..780b746 100644
--- a/media/libstagefright/WAVExtractor.cpp
+++ b/media/libstagefright/WAVExtractor.cpp
@@ -70,6 +70,8 @@
     virtual status_t read(
             MediaBuffer **buffer, const ReadOptions *options = NULL);
 
+    virtual bool supportNonblockingRead() { return true; }
+
 protected:
     virtual ~WAVSource();
 
@@ -378,8 +380,8 @@
 
     CHECK(!mStarted);
 
-    mGroup = new MediaBufferGroup;
-    mGroup->add_buffer(new MediaBuffer(kMaxFrameSize));
+    // some WAV files may have large audio buffers that use shared memory transfer.
+    mGroup = new MediaBufferGroup(4 /* buffers */, kMaxFrameSize);
 
     if (mBitsPerSample == 8) {
         // As a temporary buffer for 8->16 bit conversion.
@@ -416,6 +418,10 @@
         MediaBuffer **out, const ReadOptions *options) {
     *out = NULL;
 
+    if (options != nullptr && options->getNonBlocking() && !mGroup->has_buffers()) {
+        return WOULD_BLOCK;
+    }
+
     int64_t seekTimeUs;
     ReadOptions::SeekMode mode;
     if (options != NULL && options->getSeekTo(&seekTimeUs, &mode)) {
diff --git a/media/libstagefright/avc_utils.cpp b/media/libstagefright/avc_utils.cpp
index ccf3440..0396dc6 100644
--- a/media/libstagefright/avc_utils.cpp
+++ b/media/libstagefright/avc_utils.cpp
@@ -491,6 +491,28 @@
     return true;
 }
 
+uint32_t FindAVCLayerId(const uint8_t *data, size_t size) {
+    CHECK(data != NULL);
+
+    const unsigned kSvcNalType = 0xE;
+    const unsigned kSvcNalSearchRange = 32;
+    // SVC NAL
+    // |---0 1110|1--- ----|---- ----|iii- ---|
+    //       ^                        ^
+    //   NAL-type = 0xE               layer-Id
+    //
+    // layer_id 0 is for base layer, while 1, 2, ... are enhancement layers.
+    // Layer n uses reference frames from layer 0, 1, ..., n-1.
+
+    uint32_t layerId = 0;
+    sp<ABuffer> svcNAL = FindNAL(
+            data, size > kSvcNalSearchRange ? kSvcNalSearchRange : size, kSvcNalType);
+    if (svcNAL != NULL && svcNAL->size() >= 4) {
+        layerId = (*(svcNAL->data() + 3) >> 5) & 0x7;
+    }
+    return layerId;
+}
+
 sp<MetaData> MakeAACCodecSpecificData(
         unsigned profile, unsigned sampling_freq_index,
         unsigned channel_configuration) {
diff --git a/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp b/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp
index 696d2da..5a47510 100644
--- a/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp
+++ b/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp
@@ -59,6 +59,7 @@
 /*----------------------------------------------------------------------------
 ; INCLUDES
 ----------------------------------------------------------------------------*/
+#define LOG_TAG "a_refl"
 #include <log/log.h>
 
 #include "a_refl.h"
diff --git a/media/libstagefright/codecs/avcdec/SoftAVCDec.cpp b/media/libstagefright/codecs/avcdec/SoftAVCDec.cpp
index 801eebd..8694c73 100644
--- a/media/libstagefright/codecs/avcdec/SoftAVCDec.cpp
+++ b/media/libstagefright/codecs/avcdec/SoftAVCDec.cpp
@@ -123,7 +123,8 @@
       mStride(mWidth),
       mInputOffset(0){
     initPorts(
-            kNumBuffers, INPUT_BUF_SIZE, kNumBuffers, CODEC_MIME_TYPE);
+            1 /* numMinInputBuffers */, kNumBuffers, INPUT_BUF_SIZE,
+            1 /* numMinOutputBuffers */, kNumBuffers, CODEC_MIME_TYPE);
 
     GETTIME(&mTimeStart, NULL);
 
@@ -383,6 +384,48 @@
     resetPlugin();
 }
 
+bool SoftAVC::getVUIParams() {
+    IV_API_CALL_STATUS_T status;
+    ih264d_ctl_get_vui_params_ip_t s_ctl_get_vui_params_ip;
+    ih264d_ctl_get_vui_params_op_t s_ctl_get_vui_params_op;
+
+    s_ctl_get_vui_params_ip.e_cmd = IVD_CMD_VIDEO_CTL;
+    s_ctl_get_vui_params_ip.e_sub_cmd =
+        (IVD_CONTROL_API_COMMAND_TYPE_T)IH264D_CMD_CTL_GET_VUI_PARAMS;
+
+    s_ctl_get_vui_params_ip.u4_size =
+        sizeof(ih264d_ctl_get_vui_params_ip_t);
+
+    s_ctl_get_vui_params_op.u4_size = sizeof(ih264d_ctl_get_vui_params_op_t);
+
+    status = ivdec_api_function(
+            (iv_obj_t *)mCodecCtx, (void *)&s_ctl_get_vui_params_ip,
+            (void *)&s_ctl_get_vui_params_op);
+
+    if (status != IV_SUCCESS) {
+        ALOGW("Error in getting VUI params: 0x%x",
+                s_ctl_get_vui_params_op.u4_error_code);
+        return false;
+    }
+
+    int32_t primaries = s_ctl_get_vui_params_op.u1_colour_primaries;
+    int32_t transfer = s_ctl_get_vui_params_op.u1_tfr_chars;
+    int32_t coeffs = s_ctl_get_vui_params_op.u1_matrix_coeffs;
+    bool fullRange = s_ctl_get_vui_params_op.u1_video_full_range_flag;
+
+    ColorAspects colorAspects;
+    ColorUtils::convertIsoColorAspectsToCodecAspects(
+            primaries, transfer, coeffs, fullRange, colorAspects);
+
+    // Update color aspects if necessary.
+    if (colorAspectsDiffer(colorAspects, mBitstreamColorAspects)) {
+        mBitstreamColorAspects = colorAspects;
+        status_t err = handleColorAspectsChange();
+        CHECK(err == OK);
+    }
+    return true;
+}
+
 bool SoftAVC::setDecodeArgs(
         ivd_video_decode_ip_t *ps_dec_ip,
         ivd_video_decode_op_t *ps_dec_op,
@@ -604,6 +647,8 @@
 
             bool resChanged = (IVD_RES_CHANGED == (s_dec_op.u4_error_code & 0xFF));
 
+            getVUIParams();
+
             GETTIME(&mTimeEnd, NULL);
             /* Compute time taken for decode() */
             TIME_DIFF(mTimeStart, mTimeEnd, timeTaken);
@@ -639,16 +684,22 @@
                 continue;
             }
 
+            // Combine the resolution change and coloraspects change in one PortSettingChange event
+            // if necessary.
             if ((0 < s_dec_op.u4_pic_wd) && (0 < s_dec_op.u4_pic_ht)) {
                 uint32_t width = s_dec_op.u4_pic_wd;
                 uint32_t height = s_dec_op.u4_pic_ht;
                 bool portWillReset = false;
                 handlePortSettingsChange(&portWillReset, width, height);
-
                 if (portWillReset) {
                     resetDecoder();
                     return;
                 }
+            } else if (mUpdateColorAspects) {
+                notify(OMX_EventPortSettingsChanged, kOutputPortIndex,
+                    kDescribeColorAspectsIndex, NULL);
+                mUpdateColorAspects = false;
+                return;
             }
 
             if (s_dec_op.u4_output_present) {
@@ -705,6 +756,10 @@
     }
 }
 
+int SoftAVC::getColorAspectPreference() {
+    return kPreferBitstream;
+}
+
 }  // namespace android
 
 android::SoftOMXComponent *createSoftOMXComponent(
diff --git a/media/libstagefright/codecs/avcdec/SoftAVCDec.h b/media/libstagefright/codecs/avcdec/SoftAVCDec.h
index 38b24a6..2a71188 100644
--- a/media/libstagefright/codecs/avcdec/SoftAVCDec.h
+++ b/media/libstagefright/codecs/avcdec/SoftAVCDec.h
@@ -59,6 +59,7 @@
     virtual void onQueueFilled(OMX_U32 portIndex);
     virtual void onPortFlushCompleted(OMX_U32 portIndex);
     virtual void onReset();
+    virtual int getColorAspectPreference();
 private:
     // Number of input and output buffers
     enum {
@@ -117,6 +118,8 @@
             OMX_BUFFERHEADERTYPE *outHeader,
             size_t timeStampIx);
 
+    bool getVUIParams();
+
     DISALLOW_EVIL_CONSTRUCTORS(SoftAVC);
 };
 
diff --git a/media/libstagefright/codecs/avcenc/SoftAVCEnc.cpp b/media/libstagefright/codecs/avcenc/SoftAVCEnc.cpp
index 6ec8c41..9e7a3be 100644
--- a/media/libstagefright/codecs/avcenc/SoftAVCEnc.cpp
+++ b/media/libstagefright/codecs/avcenc/SoftAVCEnc.cpp
@@ -1016,10 +1016,10 @@
 
             if ((avcType->nAllowedPictureTypes & OMX_VIDEO_PictureTypeB) &&
                     avcType->nPFrames) {
-                mBframes = avcType->nBFrames / avcType->nPFrames;
+                mBframes = avcType->nBFrames;
             }
 
-            mIInterval = avcType->nPFrames + avcType->nBFrames;
+            mIInterval = (avcType->nPFrames + 1) * (avcType->nBFrames + 1);
             mConstrainedIntraFlag = avcType->bconstIpred;
 
             if (OMX_VIDEO_AVCLoopFilterDisable == avcType->eLoopFilterMode)
@@ -1033,7 +1033,9 @@
                     || avcType->bDirect8x8Inference != OMX_FALSE
                     || avcType->bDirectSpatialTemporal != OMX_FALSE
                     || avcType->nCabacInitIdc != 0) {
-                return OMX_ErrorUndefined;
+                // OMX does not allow a way to signal what values are wrong, so it's
+                // best for components to just do best effort in supporting these values
+                ALOGV("ignoring unsupported settings");
             }
 
             if (OK != ConvertOmxAvcLevelToAvcSpecLevel(avcType->eLevel, &mAVCEncLevel)) {
diff --git a/media/libstagefright/codecs/hevcdec/SoftHEVC.cpp b/media/libstagefright/codecs/hevcdec/SoftHEVC.cpp
index 0215a11..5c70387 100644
--- a/media/libstagefright/codecs/hevcdec/SoftHEVC.cpp
+++ b/media/libstagefright/codecs/hevcdec/SoftHEVC.cpp
@@ -182,6 +182,48 @@
     return OK;
 }
 
+bool SoftHEVC::getVUIParams() {
+    IV_API_CALL_STATUS_T status;
+    ihevcd_cxa_ctl_get_vui_params_ip_t s_ctl_get_vui_params_ip;
+    ihevcd_cxa_ctl_get_vui_params_op_t s_ctl_get_vui_params_op;
+
+    s_ctl_get_vui_params_ip.e_cmd = IVD_CMD_VIDEO_CTL;
+    s_ctl_get_vui_params_ip.e_sub_cmd =
+        (IVD_CONTROL_API_COMMAND_TYPE_T)IHEVCD_CXA_CMD_CTL_GET_VUI_PARAMS;
+
+    s_ctl_get_vui_params_ip.u4_size =
+        sizeof(ihevcd_cxa_ctl_get_vui_params_ip_t);
+
+    s_ctl_get_vui_params_op.u4_size = sizeof(ihevcd_cxa_ctl_get_vui_params_op_t);
+
+    status = ivdec_api_function(
+            (iv_obj_t *)mCodecCtx, (void *)&s_ctl_get_vui_params_ip,
+            (void *)&s_ctl_get_vui_params_op);
+
+    if (status != IV_SUCCESS) {
+        ALOGW("Error in getting VUI params: 0x%x",
+                s_ctl_get_vui_params_op.u4_error_code);
+        return false;
+    }
+
+    int32_t primaries = s_ctl_get_vui_params_op.u1_colour_primaries;
+    int32_t transfer = s_ctl_get_vui_params_op.u1_transfer_characteristics;
+    int32_t coeffs = s_ctl_get_vui_params_op.u1_matrix_coefficients;
+    bool fullRange = s_ctl_get_vui_params_op.u1_video_full_range_flag;
+
+    ColorAspects colorAspects;
+    ColorUtils::convertIsoColorAspectsToCodecAspects(
+            primaries, transfer, coeffs, fullRange, colorAspects);
+
+    // Update color aspects if necessary.
+    if (colorAspectsDiffer(colorAspects, mBitstreamColorAspects)) {
+        mBitstreamColorAspects = colorAspects;
+        status_t err = handleColorAspectsChange();
+        CHECK(err == OK);
+    }
+    return true;
+}
+
 status_t SoftHEVC::resetDecoder() {
     ivd_ctl_reset_ip_t s_ctl_ip;
     ivd_ctl_reset_op_t s_ctl_op;
@@ -554,6 +596,8 @@
 
             bool resChanged = (IVD_RES_CHANGED == (s_dec_op.u4_error_code & 0xFF));
 
+            getVUIParams();
+
             GETTIME(&mTimeEnd, NULL);
             /* Compute time taken for decode() */
             TIME_DIFF(mTimeStart, mTimeEnd, timeTaken);
@@ -589,6 +633,8 @@
                 continue;
             }
 
+            // Combine the resolution change and coloraspects change in one PortSettingChange event
+            // if necessary.
             if ((0 < s_dec_op.u4_pic_wd) && (0 < s_dec_op.u4_pic_ht)) {
                 uint32_t width = s_dec_op.u4_pic_wd;
                 uint32_t height = s_dec_op.u4_pic_ht;
@@ -599,6 +645,11 @@
                     resetDecoder();
                     return;
                 }
+            } else if (mUpdateColorAspects) {
+                notify(OMX_EventPortSettingsChanged, kOutputPortIndex,
+                    kDescribeColorAspectsIndex, NULL);
+                mUpdateColorAspects = false;
+                return;
             }
 
             if (s_dec_op.u4_output_present) {
@@ -654,6 +705,10 @@
     }
 }
 
+int SoftHEVC::getColorAspectPreference() {
+    return kPreferBitstream;
+}
+
 }  // namespace android
 
 android::SoftOMXComponent *createSoftOMXComponent(const char *name,
diff --git a/media/libstagefright/codecs/hevcdec/SoftHEVC.h b/media/libstagefright/codecs/hevcdec/SoftHEVC.h
index 3c76b59..e7c2127 100644
--- a/media/libstagefright/codecs/hevcdec/SoftHEVC.h
+++ b/media/libstagefright/codecs/hevcdec/SoftHEVC.h
@@ -61,6 +61,7 @@
     virtual void onQueueFilled(OMX_U32 portIndex);
     virtual void onPortFlushCompleted(OMX_U32 portIndex);
     virtual void onReset();
+    virtual int getColorAspectPreference();
 private:
     // Number of input and output buffers
     enum {
@@ -112,6 +113,8 @@
         OMX_BUFFERHEADERTYPE *outHeader,
         size_t timeStampIx);
 
+    bool getVUIParams();
+
     DISALLOW_EVIL_CONSTRUCTORS (SoftHEVC);
 };
 
diff --git a/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp b/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp
index bb59ae4..1dd631a 100644
--- a/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp
+++ b/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp
@@ -210,8 +210,17 @@
             PortInfo *port = editPortInfo(1);
             OMX_BUFFERHEADERTYPE *outHeader = port->mBuffers.editItemAt(1).mHeader;
 
+            OMX_U32 yFrameSize = sizeof(uint8) * mHandle->size;
+            if ((outHeader->nAllocLen < yFrameSize) ||
+                    (outHeader->nAllocLen - yFrameSize < yFrameSize / 2)) {
+                ALOGE("Too small output buffer for reference frame: %lu bytes",
+                        (unsigned long)outHeader->nAllocLen);
+                android_errorWriteLog(0x534e4554, "30033990");
+                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
+                mSignalledError = true;
+                return;
+            }
             PVSetReferenceYUV(mHandle, outHeader->pBuffer);
-
             mFramesConfigured = true;
         }
 
@@ -229,7 +238,16 @@
         int32_t bufferSize = inHeader->nFilledLen;
         int32_t tmp = bufferSize;
 
-        OMX_U32 frameSize = (mWidth * mHeight * 3) / 2;
+        OMX_U32 frameSize;
+        OMX_U64 yFrameSize = (OMX_U64)mWidth * (OMX_U64)mHeight;
+        if (yFrameSize > ((OMX_U64)UINT32_MAX / 3) * 2) {
+            ALOGE("Frame size too large");
+            notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
+            mSignalledError = true;
+            return;
+        }
+        frameSize = (OMX_U32)(yFrameSize + (yFrameSize / 2));
+
         if (outHeader->nAllocLen < frameSize) {
             android_errorWriteLog(0x534e4554, "27833616");
             ALOGE("Insufficient output buffer size");
diff --git a/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp b/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp
index 03e4119..8393d79 100644
--- a/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp
+++ b/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp
@@ -15,11 +15,15 @@
  * and limitations under the License.
  * -------------------------------------------------------------------
  */
+
+#define LOG_TAG "conceal"
+
+#include "log/log.h"
+
 #include "mp4dec_lib.h" /* video decoder function prototypes */
 #include "vlc_decode.h"
 #include "bitstream.h"
 #include "scaling.h"
-#include "log/log.h"
 
 /* ====================================================================== /
 Function : ConcealTexture_I()
diff --git a/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp b/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp
index 7638bb7..f496b0c 100644
--- a/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp
+++ b/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp
@@ -76,7 +76,7 @@
             176 /* width */, 144 /* height */,
             callbacks, appData, component),
       mEncodeMode(COMBINE_MODE_WITH_ERR_RES),
-      mIDRFrameRefreshIntervalInSec(1),
+      mKeyFrameInterval(30),
       mNumInputFrames(-1),
       mStarted(false),
       mSawInputEOS(false),
@@ -116,6 +116,10 @@
         ALOGE("Failed to get default encoding parameters");
         return OMX_ErrorUndefined;
     }
+    if (mFramerate == 0) {
+        ALOGE("Framerate should not be 0");
+        return OMX_ErrorUndefined;
+    }
     mEncParams->encMode = mEncodeMode;
     mEncParams->encWidth[0] = mWidth;
     mEncParams->encHeight[0] = mHeight;
@@ -159,14 +163,7 @@
     }
 
     // Set IDR frame refresh interval
-    if (mIDRFrameRefreshIntervalInSec < 0) {
-        mEncParams->intraPeriod = -1;
-    } else if (mIDRFrameRefreshIntervalInSec == 0) {
-        mEncParams->intraPeriod = 1;  // All I frames
-    } else {
-        mEncParams->intraPeriod =
-            (mIDRFrameRefreshIntervalInSec * mFramerate) >> 16;
-    }
+    mEncParams->intraPeriod = mKeyFrameInterval;
 
     mEncParams->numIntraMB = 0;
     mEncParams->sceneDetect = PV_ON;
@@ -378,6 +375,8 @@
                 return OMX_ErrorUndefined;
             }
 
+            mKeyFrameInterval = int32_t(mpeg4type->nPFrames + 1);
+
             return OMX_ErrorNone;
         }
 
diff --git a/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.h b/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.h
index 3389c37..bb6ea92 100644
--- a/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.h
+++ b/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.h
@@ -63,7 +63,7 @@
     } InputBufferInfo;
 
     MP4EncodingMode mEncodeMode;
-    int32_t  mIDRFrameRefreshIntervalInSec;
+    int32_t  mKeyFrameInterval; // 1: all I-frames, <0: infinite
 
     int64_t  mNumInputFrames;
     bool     mStarted;
diff --git a/media/libstagefright/codecs/mp3dec/SoftMP3.cpp b/media/libstagefright/codecs/mp3dec/SoftMP3.cpp
index 4cde54e..0822c34 100644
--- a/media/libstagefright/codecs/mp3dec/SoftMP3.cpp
+++ b/media/libstagefright/codecs/mp3dec/SoftMP3.cpp
@@ -120,6 +120,17 @@
     mIsFirst = true;
 }
 
+void *SoftMP3::memsetSafe(OMX_BUFFERHEADERTYPE *outHeader, int c, size_t len) {
+    if (len > outHeader->nAllocLen) {
+        ALOGE("memset buffer too small: got %u, expected %zu", outHeader->nAllocLen, len);
+        android_errorWriteLog(0x534e4554, "29422022");
+        notify(OMX_EventError, OMX_ErrorUndefined, OUTPUT_BUFFER_TOO_SMALL, NULL);
+        mSignalledError = true;
+        return NULL;
+    }
+    return memset(outHeader->pBuffer, c, len);
+}
+
 OMX_ERRORTYPE SoftMP3::internalGetParameter(
         OMX_INDEXTYPE index, OMX_PTR params) {
     switch (index) {
@@ -300,7 +311,10 @@
                     outHeader->nOffset = 0;
                     outHeader->nFilledLen = kPVMP3DecoderDelay * mNumChannels * sizeof(int16_t);
 
-                    memset(outHeader->pBuffer, 0, outHeader->nFilledLen);
+                    if (!memsetSafe(outHeader, 0, outHeader->nFilledLen)) {
+                        return;
+                    }
+
                 }
                 outHeader->nFlags = OMX_BUFFERFLAG_EOS;
                 mSignalledOutputEos = true;
@@ -312,9 +326,9 @@
                 // if mIsFirst is true as we may not have a valid
                 // mConfig->samplingRate and mConfig->num_channels?
                 ALOGV_IF(mIsFirst, "insufficient data for first frame, sending silence");
-                memset(outHeader->pBuffer,
-                       0,
-                       mConfig->outputFrameSize * sizeof(int16_t));
+                if (!memsetSafe(outHeader, 0, mConfig->outputFrameSize * sizeof(int16_t))) {
+                    return;
+                }
 
                 if (inHeader) {
                     mConfig->inputBufferUsedLength = inHeader->nFilledLen;
diff --git a/media/libstagefright/codecs/mp3dec/SoftMP3.h b/media/libstagefright/codecs/mp3dec/SoftMP3.h
index f9e7b53..3bfa6c7 100644
--- a/media/libstagefright/codecs/mp3dec/SoftMP3.h
+++ b/media/libstagefright/codecs/mp3dec/SoftMP3.h
@@ -72,6 +72,7 @@
 
     void initPorts();
     void initDecoder();
+    void *memsetSafe(OMX_BUFFERHEADERTYPE *outHeader, int c, size_t len);
 
     DISALLOW_EVIL_CONSTRUCTORS(SoftMP3);
 };
diff --git a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp
index 5210683..5ed037a 100644
--- a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp
+++ b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp
@@ -460,6 +460,47 @@
     resetPlugin();
 }
 
+bool SoftMPEG2::getSeqInfo() {
+    IV_API_CALL_STATUS_T status;
+    impeg2d_ctl_get_seq_info_ip_t s_ctl_get_seq_info_ip;
+    impeg2d_ctl_get_seq_info_op_t s_ctl_get_seq_info_op;
+
+    s_ctl_get_seq_info_ip.e_cmd = IVD_CMD_VIDEO_CTL;
+    s_ctl_get_seq_info_ip.e_sub_cmd =
+        (IVD_CONTROL_API_COMMAND_TYPE_T)IMPEG2D_CMD_CTL_GET_SEQ_INFO;
+
+    s_ctl_get_seq_info_ip.u4_size = sizeof(impeg2d_ctl_get_seq_info_ip_t);
+    s_ctl_get_seq_info_op.u4_size = sizeof(impeg2d_ctl_get_seq_info_op_t);
+
+    status = ivdec_api_function(
+            (iv_obj_t *)mCodecCtx, (void *)&s_ctl_get_seq_info_ip,
+            (void *)&s_ctl_get_seq_info_op);
+
+    if (status != IV_SUCCESS) {
+        ALOGW("Error in getting Sequence info: 0x%x",
+                s_ctl_get_seq_info_op.u4_error_code);
+        return false;
+    }
+
+
+    int32_t primaries = s_ctl_get_seq_info_op.u1_colour_primaries;
+    int32_t transfer = s_ctl_get_seq_info_op.u1_transfer_characteristics;
+    int32_t coeffs = s_ctl_get_seq_info_op.u1_matrix_coefficients;
+    bool fullRange = false;  // mpeg2 video has limited range.
+
+    ColorAspects colorAspects;
+    ColorUtils::convertIsoColorAspectsToCodecAspects(
+            primaries, transfer, coeffs, fullRange, colorAspects);
+
+    // Update color aspects if necessary.
+    if (colorAspectsDiffer(colorAspects, mBitstreamColorAspects)) {
+        mBitstreamColorAspects = colorAspects;
+        status_t err = handleColorAspectsChange();
+        CHECK(err == OK);
+    }
+    return true;
+}
+
 OMX_ERRORTYPE SoftMPEG2::internalSetParameter(OMX_INDEXTYPE index, const OMX_PTR params) {
     const uint32_t oldWidth = mWidth;
     const uint32_t oldHeight = mHeight;
@@ -650,6 +691,8 @@
             bool unsupportedDimensions = (IMPEG2D_UNSUPPORTED_DIMENSIONS == s_dec_op.u4_error_code);
             bool resChanged = (IVD_RES_CHANGED == (s_dec_op.u4_error_code & 0xFF));
 
+            getSeqInfo();
+
             GETTIME(&mTimeEnd, NULL);
             /* Compute time taken for decode() */
             TIME_DIFF(mTimeStart, mTimeEnd, timeTaken);
@@ -705,6 +748,8 @@
                 continue;
             }
 
+            // Combine the resolution change and coloraspects change in one PortSettingChange event
+            // if necessary.
             if ((0 < s_dec_op.u4_pic_wd) && (0 < s_dec_op.u4_pic_ht)) {
                 uint32_t width = s_dec_op.u4_pic_wd;
                 uint32_t height = s_dec_op.u4_pic_ht;
@@ -715,6 +760,11 @@
                     resetDecoder();
                     return;
                 }
+            } else if (mUpdateColorAspects) {
+                notify(OMX_EventPortSettingsChanged, kOutputPortIndex,
+                    kDescribeColorAspectsIndex, NULL);
+                mUpdateColorAspects = false;
+                return;
             }
 
             if (s_dec_op.u4_output_present) {
@@ -783,6 +833,10 @@
     }
 }
 
+int SoftMPEG2::getColorAspectPreference() {
+    return kPreferBitstream;
+}
+
 }  // namespace android
 
 android::SoftOMXComponent *createSoftOMXComponent(
diff --git a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h
index 9d82c6d..1921a23 100644
--- a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h
+++ b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h
@@ -63,6 +63,7 @@
     virtual void onQueueFilled(OMX_U32 portIndex);
     virtual void onPortFlushCompleted(OMX_U32 portIndex);
     virtual void onReset();
+    virtual int getColorAspectPreference();
     virtual OMX_ERRORTYPE internalSetParameter(OMX_INDEXTYPE index, const OMX_PTR params);
 private:
     // Number of input and output buffers
@@ -125,6 +126,8 @@
             OMX_BUFFERHEADERTYPE *outHeader,
             size_t timeStampIx);
 
+    bool getSeqInfo();
+
     DISALLOW_EVIL_CONSTRUCTORS(SoftMPEG2);
 };
 
diff --git a/media/libstagefright/codecs/on2/dec/SoftVPX.cpp b/media/libstagefright/codecs/on2/dec/SoftVPX.cpp
index 8022467..3490008 100644
--- a/media/libstagefright/codecs/on2/dec/SoftVPX.cpp
+++ b/media/libstagefright/codecs/on2/dec/SoftVPX.cpp
@@ -156,7 +156,7 @@
         outHeader->nFlags = 0;
         outHeader->nFilledLen = (outputBufferWidth() * outputBufferHeight() * 3) / 2;
         outHeader->nTimeStamp = *(OMX_TICKS *)mImg->user_priv;
-        if (outHeader->nAllocLen >= outHeader->nFilledLen) {
+        if (outputBufferSafe(outHeader)) {
             uint8_t *dst = outHeader->pBuffer;
             const uint8_t *srcY = (const uint8_t *)mImg->planes[VPX_PLANE_Y];
             const uint8_t *srcU = (const uint8_t *)mImg->planes[VPX_PLANE_U];
@@ -166,8 +166,6 @@
             size_t srcVStride = mImg->stride[VPX_PLANE_V];
             copyYV12FrameToOutputBuffer(dst, srcY, srcU, srcV, srcYStride, srcUStride, srcVStride);
         } else {
-            ALOGE("b/27597103, buffer too small");
-            android_errorWriteLog(0x534e4554, "27597103");
             outHeader->nFilledLen = 0;
         }
 
@@ -197,6 +195,25 @@
     return true;
 }
 
+bool SoftVPX::outputBufferSafe(OMX_BUFFERHEADERTYPE *outHeader) {
+    uint32_t width = outputBufferWidth();
+    uint32_t height = outputBufferHeight();
+    uint64_t nFilledLen = width;
+    nFilledLen *= height;
+    if (nFilledLen > UINT32_MAX / 3) {
+        ALOGE("b/29421675, nFilledLen overflow %llu w %u h %u",
+                (unsigned long long)nFilledLen, width, height);
+        android_errorWriteLog(0x534e4554, "29421675");
+        return false;
+    } else if (outHeader->nAllocLen < outHeader->nFilledLen) {
+        ALOGE("b/27597103, buffer too small");
+        android_errorWriteLog(0x534e4554, "27597103");
+        return false;
+    }
+
+    return true;
+}
+
 void SoftVPX::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mOutputPortSettingsChange != NONE || mEOSStatus == OUTPUT_FRAMES_FLUSHED) {
         return;
diff --git a/media/libstagefright/codecs/on2/dec/SoftVPX.h b/media/libstagefright/codecs/on2/dec/SoftVPX.h
index 8ccbae2..84cf79c 100644
--- a/media/libstagefright/codecs/on2/dec/SoftVPX.h
+++ b/media/libstagefright/codecs/on2/dec/SoftVPX.h
@@ -66,6 +66,7 @@
     status_t initDecoder();
     status_t destroyDecoder();
     bool outputBuffers(bool flushDecoder, bool display, bool eos, bool *portWillReset);
+    bool outputBufferSafe(OMX_BUFFERHEADERTYPE *outHeader);
 
     DISALLOW_EVIL_CONSTRUCTORS(SoftVPX);
 };
diff --git a/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c b/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c
index f820dfd..a9b38e5 100644
--- a/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c
@@ -35,10 +35,12 @@
 /*------------------------------------------------------------------------------
     1. Include headers
 ------------------------------------------------------------------------------*/
-#include <log/log.h>
 
 #include <stdlib.h>
 #include <string.h>
+
+#include <log/log.h>
+
 #include "basetype.h"
 #include "h264bsd_container.h"
 #include "H264SwDecApi.h"
diff --git a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_dpb.c b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_dpb.c
index 799bd16..bd9eee9 100644
--- a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_dpb.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_dpb.c
@@ -61,6 +61,7 @@
 #include "basetype.h"
 
 #include <log/log.h>
+
 /*------------------------------------------------------------------------------
     2. External compiler flags
 --------------------------------------------------------------------------------
diff --git a/media/libstagefright/colorconversion/Android.mk b/media/libstagefright/colorconversion/Android.mk
index 32e2dfd..0bf9701 100644
--- a/media/libstagefright/colorconversion/Android.mk
+++ b/media/libstagefright/colorconversion/Android.mk
@@ -7,7 +7,11 @@
 
 LOCAL_C_INCLUDES := \
         $(TOP)/frameworks/native/include/media/openmax \
-        $(TOP)/hardware/msm7k
+        $(TOP)/hardware/msm7k \
+        $(TOP)/external/libyuv/files/include
+
+LOCAL_STATIC_LIBRARIES := \
+        libyuv_static \
 
 LOCAL_CFLAGS += -Werror
 LOCAL_CLANG := true
diff --git a/media/libstagefright/colorconversion/ColorConverter.cpp b/media/libstagefright/colorconversion/ColorConverter.cpp
index 597167f..3ca7cc0 100644
--- a/media/libstagefright/colorconversion/ColorConverter.cpp
+++ b/media/libstagefright/colorconversion/ColorConverter.cpp
@@ -22,6 +22,10 @@
 #include <media/stagefright/ColorConverter.h>
 #include <media/stagefright/MediaErrors.h>
 
+#include "libyuv/convert_from.h"
+
+#define USE_LIBYUV
+
 namespace android {
 
 ColorConverter::ColorConverter(
@@ -103,7 +107,11 @@
 
     switch (mSrcFormat) {
         case OMX_COLOR_FormatYUV420Planar:
+#ifdef USE_LIBYUV
+            err = convertYUV420PlanarUseLibYUV(src, dst);
+#else
             err = convertYUV420Planar(src, dst);
+#endif
             break;
 
         case OMX_COLOR_FormatCbYCrY:
@@ -196,6 +204,34 @@
     return OK;
 }
 
+status_t ColorConverter::convertYUV420PlanarUseLibYUV(
+        const BitmapParams &src, const BitmapParams &dst) {
+    if (!((src.mCropLeft & 1) == 0
+            && src.cropWidth() == dst.cropWidth()
+            && src.cropHeight() == dst.cropHeight())) {
+        return ERROR_UNSUPPORTED;
+    }
+
+    uint16_t *dst_ptr = (uint16_t *)dst.mBits
+        + dst.mCropTop * dst.mWidth + dst.mCropLeft;
+
+    const uint8_t *src_y =
+        (const uint8_t *)src.mBits + src.mCropTop * src.mWidth + src.mCropLeft;
+
+    const uint8_t *src_u =
+        (const uint8_t *)src_y + src.mWidth * src.mHeight
+        + src.mCropTop * (src.mWidth / 2) + src.mCropLeft / 2;
+
+    const uint8_t *src_v =
+        src_u + (src.mWidth / 2) * (src.mHeight / 2);
+
+
+    libyuv::I420ToRGB565(src_y, src.mWidth, src_u, src.mWidth / 2, src_v, src.mWidth / 2,
+            (uint8 *)dst_ptr, dst.mWidth * 2, dst.mWidth, dst.mHeight);
+
+    return OK;
+}
+
 status_t ColorConverter::convertYUV420Planar(
         const BitmapParams &src, const BitmapParams &dst) {
     if (!((src.mCropLeft & 1) == 0
diff --git a/media/libstagefright/foundation/AMessage.cpp b/media/libstagefright/foundation/AMessage.cpp
index 00f2755..1b0db33 100644
--- a/media/libstagefright/foundation/AMessage.cpp
+++ b/media/libstagefright/foundation/AMessage.cpp
@@ -17,11 +17,13 @@
 #define LOG_TAG "AMessage"
 //#define LOG_NDEBUG 0
 //#define DUMP_STATS
-#include <cutils/log.h>
+
+#include <ctype.h>
 
 #include "AMessage.h"
 
-#include <ctype.h>
+#include <binder/Parcel.h>
+#include <log/log.h>
 
 #include "AAtomizer.h"
 #include "ABuffer.h"
@@ -30,7 +32,6 @@
 #include "AHandler.h"
 #include "AString.h"
 
-#include <binder/Parcel.h>
 #include <media/stagefright/foundation/hexdump.h>
 
 namespace android {
@@ -212,6 +213,33 @@
     return NULL;
 }
 
+bool AMessage::findAsFloat(const char *name, float *value) const {
+    size_t i = findItemIndex(name, strlen(name));
+    if (i < mNumItems) {
+        const Item *item = &mItems[i];
+        switch (item->mType) {
+            case kTypeFloat:
+                *value = item->u.floatValue;
+                return true;
+            case kTypeDouble:
+                *value = (float)item->u.doubleValue;
+                return true;
+            case kTypeInt64:
+                *value = (float)item->u.int64Value;
+                return true;
+            case kTypeInt32:
+                *value = (float)item->u.int32Value;
+                return true;
+            case kTypeSize:
+                *value = (float)item->u.sizeValue;
+                return true;
+            default:
+                return false;
+        }
+    }
+    return false;
+}
+
 bool AMessage::contains(const char *name) const {
     size_t i = findItemIndex(name, strlen(name));
     return i < mNumItems;
diff --git a/media/libstagefright/foundation/ColorUtils.cpp b/media/libstagefright/foundation/ColorUtils.cpp
index e329766..d7439b2 100644
--- a/media/libstagefright/foundation/ColorUtils.cpp
+++ b/media/libstagefright/foundation/ColorUtils.cpp
@@ -286,6 +286,7 @@
         { 15, ColorAspects::TransferSMPTE170M },
         { 16, ColorAspects::TransferST2084 },
         { 17, ColorAspects::TransferST428 },
+        { 18, ColorAspects::TransferHLG },
     }
 };
 
diff --git a/media/libstagefright/foundation/MediaBuffer.cpp b/media/libstagefright/foundation/MediaBuffer.cpp
index fa8e241..16000ef 100644
--- a/media/libstagefright/foundation/MediaBuffer.cpp
+++ b/media/libstagefright/foundation/MediaBuffer.cpp
@@ -30,9 +30,11 @@
 
 namespace android {
 
+/* static */
+std::atomic_int_least32_t MediaBuffer::mUseSharedMemory(0);
+
 MediaBuffer::MediaBuffer(void *data, size_t size)
     : mObserver(NULL),
-      mNextBuffer(NULL),
       mRefCount(0),
       mData(data),
       mSize(size),
@@ -45,7 +47,6 @@
 
 MediaBuffer::MediaBuffer(size_t size)
     : mObserver(NULL),
-      mNextBuffer(NULL),
       mRefCount(0),
       mData(NULL),
       mSize(size),
@@ -54,11 +55,14 @@
       mOwnsData(true),
       mMetaData(new MetaData),
       mOriginal(NULL) {
-    if (size < kSharedMemThreshold) {
+    if (size < kSharedMemThreshold
+            || std::atomic_load_explicit(&mUseSharedMemory, std::memory_order_seq_cst) == 0) {
         mData = malloc(size);
     } else {
-        sp<MemoryDealer> memoryDealer = new MemoryDealer(size, "MediaBuffer");
-        mMemory = memoryDealer->allocate(size);
+        ALOGV("creating memoryDealer");
+        sp<MemoryDealer> memoryDealer =
+                new MemoryDealer(size + sizeof(SharedControl), "MediaBuffer");
+        mMemory = memoryDealer->allocate(size + sizeof(SharedControl));
         if (mMemory == NULL) {
             ALOGW("Failed to allocate shared memory, trying regular allocation!");
             mData = malloc(size);
@@ -66,7 +70,8 @@
                 ALOGE("Out of memory");
             }
         } else {
-            mData = mMemory->pointer();
+            getSharedControl()->clear();
+            mData = (uint8_t *)mMemory->pointer() + sizeof(SharedControl);
             ALOGV("Allocated shared mem buffer of size %zu @ %p", size, mData);
         }
     }
@@ -74,7 +79,6 @@
 
 MediaBuffer::MediaBuffer(const sp<GraphicBuffer>& graphicBuffer)
     : mObserver(NULL),
-      mNextBuffer(NULL),
       mRefCount(0),
       mData(NULL),
       mSize(1),
@@ -88,7 +92,6 @@
 
 MediaBuffer::MediaBuffer(const sp<ABuffer> &buffer)
     : mObserver(NULL),
-      mNextBuffer(NULL),
       mRefCount(0),
       mData(buffer->data()),
       mSize(buffer->size()),
@@ -102,6 +105,7 @@
 
 void MediaBuffer::release() {
     if (mObserver == NULL) {
+        // Legacy contract for MediaBuffer without a MediaBufferGroup.
         CHECK_EQ(mRefCount, 0);
         delete this;
         return;
@@ -183,6 +187,10 @@
         mOriginal->release();
         mOriginal = NULL;
     }
+
+   if (mMemory.get() != nullptr) {
+       getSharedControl()->setDeadObject();
+   }
 }
 
 void MediaBuffer::setObserver(MediaBufferObserver *observer) {
@@ -190,18 +198,6 @@
     mObserver = observer;
 }
 
-void MediaBuffer::setNextBuffer(MediaBuffer *buffer) {
-    mNextBuffer = buffer;
-}
-
-MediaBuffer *MediaBuffer::nextBuffer() {
-    return mNextBuffer;
-}
-
-int MediaBuffer::refcount() const {
-    return mRefCount;
-}
-
 MediaBuffer *MediaBuffer::clone() {
     CHECK(mGraphicBuffer == NULL);
 
diff --git a/media/libstagefright/foundation/MediaBufferGroup.cpp b/media/libstagefright/foundation/MediaBufferGroup.cpp
index 9022324..54f768a 100644
--- a/media/libstagefright/foundation/MediaBufferGroup.cpp
+++ b/media/libstagefright/foundation/MediaBufferGroup.cpp
@@ -23,20 +23,78 @@
 
 namespace android {
 
-MediaBufferGroup::MediaBufferGroup()
-    : mFirstBuffer(NULL),
-      mLastBuffer(NULL) {
+// std::min is not constexpr in C++11
+template<typename T>
+constexpr T MIN(const T &a, const T &b) { return a <= b ? a : b; }
+
+// MediaBufferGroup may create shared memory buffers at a
+// smaller threshold than an isolated new MediaBuffer.
+static const size_t kSharedMemoryThreshold = MIN(
+        (size_t)MediaBuffer::kSharedMemThreshold, (size_t)(4 * 1024));
+
+MediaBufferGroup::MediaBufferGroup(size_t growthLimit) :
+    mGrowthLimit(growthLimit) {
+}
+
+MediaBufferGroup::MediaBufferGroup(size_t buffers, size_t buffer_size, size_t growthLimit)
+    : mGrowthLimit(growthLimit) {
+
+    if (buffer_size >= kSharedMemoryThreshold) {
+        ALOGD("creating MemoryDealer");
+        // Using a single MemoryDealer is efficient for a group of shared memory objects.
+        // This loop guarantees that we use shared memory (no fallback to malloc).
+
+        size_t alignment = MemoryDealer::getAllocationAlignment();
+        size_t augmented_size = buffer_size + sizeof(MediaBuffer::SharedControl);
+        size_t total = (augmented_size + alignment - 1) / alignment * alignment * buffers;
+        sp<MemoryDealer> memoryDealer = new MemoryDealer(total, "MediaBufferGroup");
+
+        for (size_t i = 0; i < buffers; ++i) {
+            sp<IMemory> mem = memoryDealer->allocate(augmented_size);
+            if (mem.get() == nullptr || mem->pointer() == nullptr) {
+                ALOGW("Only allocated %zu shared buffers of size %zu", i, buffer_size);
+                break;
+            }
+            MediaBuffer *buffer = new MediaBuffer(mem);
+            buffer->getSharedControl()->clear();
+            add_buffer(buffer);
+        }
+        return;
+    }
+
+    // Non-shared memory allocation.
+    for (size_t i = 0; i < buffers; ++i) {
+        MediaBuffer *buffer = new MediaBuffer(buffer_size);
+        if (buffer->data() == nullptr) {
+            delete buffer; // don't call release, it's not properly formed
+            ALOGW("Only allocated %zu malloc buffers of size %zu", i, buffer_size);
+            break;
+        }
+        add_buffer(buffer);
+    }
 }
 
 MediaBufferGroup::~MediaBufferGroup() {
-    MediaBuffer *next;
-    for (MediaBuffer *buffer = mFirstBuffer; buffer != NULL;
-         buffer = next) {
-        next = buffer->nextBuffer();
+    for (MediaBuffer *buffer : mBuffers) {
+        if (buffer->refcount() != 0) {
+            const int localRefcount = buffer->localRefcount();
+            const int remoteRefcount = buffer->remoteRefcount();
 
-        CHECK_EQ(buffer->refcount(), 0);
+            // Fatal if we have a local refcount.
+            LOG_ALWAYS_FATAL_IF(localRefcount != 0,
+                    "buffer(%p) localRefcount %d != 0, remoteRefcount %d",
+                    buffer, localRefcount, remoteRefcount);
 
-        buffer->setObserver(NULL);
+            // Log an error if we have a remaining remote refcount,
+            // as the remote process may have died or may have inappropriate behavior.
+            // The shared memory associated with the MediaBuffer will
+            // automatically be reclaimed when there are no remaining fds
+            // associated with it.
+            ALOGE("buffer(%p) has residual remoteRefcount %d",
+                    buffer, remoteRefcount);
+        }
+        // gracefully delete.
+        buffer->setObserver(nullptr);
         buffer->release();
     }
 }
@@ -45,87 +103,83 @@
     Mutex::Autolock autoLock(mLock);
 
     buffer->setObserver(this);
+    mBuffers.emplace_back(buffer);
+    // optionally: mGrowthLimit = max(mGrowthLimit, mBuffers.size());
+}
 
-    if (mLastBuffer) {
-        mLastBuffer->setNextBuffer(buffer);
-    } else {
-        mFirstBuffer = buffer;
+bool MediaBufferGroup::has_buffers() {
+    if (mBuffers.size() < mGrowthLimit) {
+        return true; // We can add more buffers internally.
     }
-
-    mLastBuffer = buffer;
+    for (MediaBuffer *buffer : mBuffers) {
+        if (buffer->refcount() == 0) {
+            return true;
+        }
+    }
+    return false;
 }
 
 status_t MediaBufferGroup::acquire_buffer(
         MediaBuffer **out, bool nonBlocking, size_t requestedSize) {
     Mutex::Autolock autoLock(mLock);
-
     for (;;) {
-        MediaBuffer *freeBuffer = NULL;
-        MediaBuffer *freeBufferPrevious = NULL;
-        MediaBuffer *buffer = NULL;
-        MediaBuffer *bufferPrevious = NULL;
         size_t smallest = requestedSize;
-        for (buffer = mFirstBuffer;
-             buffer != NULL; buffer = buffer->nextBuffer()) {
-            if (buffer->refcount() == 0) {
-               if (buffer->size() >= requestedSize) {
-                   break;
-               } else if (buffer->size() < smallest) {
-                   freeBuffer = buffer;
-                   freeBufferPrevious = bufferPrevious;
-               }
+        MediaBuffer *buffer = nullptr;
+        auto free = mBuffers.end();
+        for (auto it = mBuffers.begin(); it != mBuffers.end(); ++it) {
+            if ((*it)->refcount() == 0) {
+                const size_t size = (*it)->size();
+                if (size >= requestedSize) {
+                    buffer = *it;
+                    break;
+                }
+                if (size < smallest) {
+                    smallest = size; // always free the smallest buf
+                    free = it;
+                }
             }
-            bufferPrevious = buffer;
         }
-
-        if (buffer == NULL && freeBuffer != NULL) {
-            ALOGV("allocate new buffer, requested size %zu vs available %zu",
-                    requestedSize, freeBuffer->size());
-            size_t allocateSize = requestedSize;
-            if (requestedSize < SIZE_MAX / 3) {
-                allocateSize = requestedSize * 3 / 2;
+        if (buffer == nullptr
+                && (free != mBuffers.end() || mBuffers.size() < mGrowthLimit)) {
+            // We alloc before we free so failure leaves group unchanged.
+            const size_t allocateSize = requestedSize < SIZE_MAX / 3 * 2 /* NB: ordering */ ?
+                    requestedSize * 3 / 2 : requestedSize;
+            buffer = new MediaBuffer(allocateSize);
+            if (buffer->data() == nullptr) {
+                ALOGE("Allocation failure for size %zu", allocateSize);
+                delete buffer; // Invalid alloc, prefer not to call release.
+                buffer = nullptr;
+            } else {
+                buffer->setObserver(this);
+                if (free != mBuffers.end()) {
+                    ALOGV("reallocate buffer, requested size %zu vs available %zu",
+                            requestedSize, (*free)->size());
+                    (*free)->setObserver(nullptr);
+                    (*free)->release();
+                    *free = buffer; // in-place replace
+                } else {
+                    ALOGV("allocate buffer, requested size %zu", requestedSize);
+                    mBuffers.emplace_back(buffer);
+                }
             }
-            MediaBuffer *newBuffer = new MediaBuffer(allocateSize);
-            newBuffer->setObserver(this);
-            if (freeBuffer == mFirstBuffer) {
-                mFirstBuffer = newBuffer;
-            }
-            if (freeBuffer == mLastBuffer) {
-                mLastBuffer = newBuffer;
-            }
-            newBuffer->setNextBuffer(freeBuffer->nextBuffer());
-            if (freeBufferPrevious != NULL) {
-                freeBufferPrevious->setNextBuffer(newBuffer);
-            }
-            freeBuffer->setObserver(NULL);
-            freeBuffer->release();
-
-            buffer = newBuffer;
         }
-
-        if (buffer != NULL) {
+        if (buffer != nullptr) {
             buffer->add_ref();
             buffer->reset();
-
             *out = buffer;
-            goto exit;
+            return OK;
         }
-
         if (nonBlocking) {
-            *out = NULL;
+            *out = nullptr;
             return WOULD_BLOCK;
         }
-
-        // All buffers are in use. Block until one of them is returned to us.
+        // All buffers are in use, block until one of them is returned.
         mCondition.wait(mLock);
     }
-
-exit:
-    return OK;
+    // Never gets here.
 }
 
 void MediaBufferGroup::signalBufferReturned(MediaBuffer *) {
-    Mutex::Autolock autoLock(mLock);
     mCondition.signal();
 }
 
diff --git a/media/libstagefright/foundation/MetaData.cpp b/media/libstagefright/foundation/MetaData.cpp
index b4abc60..a8965f0 100644
--- a/media/libstagefright/foundation/MetaData.cpp
+++ b/media/libstagefright/foundation/MetaData.cpp
@@ -392,8 +392,12 @@
 }
 
 status_t MetaData::writeToParcel(Parcel &parcel) {
+    status_t ret;
     size_t numItems = mItems.size();
-    parcel.writeUint32(uint32_t(numItems));
+    ret = parcel.writeUint32(uint32_t(numItems));
+    if (ret) {
+        return ret;
+    }
     for (size_t i = 0; i < numItems; i++) {
         int32_t key = mItems.keyAt(i);
         const typed_data &item = mItems.valueAt(i);
@@ -401,9 +405,32 @@
         const void *data;
         size_t size;
         item.getData(&type, &data, &size);
-        parcel.writeInt32(key);
-        parcel.writeUint32(type);
-        parcel.writeByteArray(size, (uint8_t*)data);
+        ret = parcel.writeInt32(key);
+        if (ret) {
+            return ret;
+        }
+        ret = parcel.writeUint32(type);
+        if (ret) {
+            return ret;
+        }
+        if (type == TYPE_NONE) {
+            android::Parcel::WritableBlob blob;
+            ret = parcel.writeUint32(static_cast<uint32_t>(size));
+            if (ret) {
+                return ret;
+            }
+            ret = parcel.writeBlob(size, false, &blob);
+            if (ret) {
+                return ret;
+            }
+            memcpy(blob.data(), data, size);
+            blob.release();
+        } else {
+            ret = parcel.writeByteArray(size, (uint8_t*)data);
+            if (ret) {
+                return ret;
+            }
+        }
     }
     return OK;
 }
@@ -422,8 +449,20 @@
             if (ret != OK) {
                 break;
             }
-            // copy data directly from Parcel storage, then advance position
-            setData(key, type, parcel.readInplace(size), size);
+            // copy data from Blob, which may be inline in Parcel storage,
+            // then advance position
+            if (type == TYPE_NONE) {
+                android::Parcel::ReadableBlob blob;
+                ret = parcel.readBlob(size, &blob);
+                if (ret != OK) {
+                    break;
+                }
+                setData(key, type, blob.data(), size);
+                blob.release();
+            } else {
+                // copy data directly from Parcel storage, then advance position
+                setData(key, type, parcel.readInplace(size), size);
+            }
          }
 
         return OK;
diff --git a/media/libstagefright/http/MediaHTTP.cpp b/media/libstagefright/http/MediaHTTP.cpp
index 76ec625..5b18814 100644
--- a/media/libstagefright/http/MediaHTTP.cpp
+++ b/media/libstagefright/http/MediaHTTP.cpp
@@ -58,15 +58,19 @@
         extHeaders.add(String8("User-Agent"), String8(MakeUserAgent().c_str()));
     }
 
-    bool success = mHTTPConnection->connect(uri, &extHeaders);
+    mLastURI = uri;
+    // reconnect() calls with uri == old mLastURI.c_str(), which gets zapped
+    // as part of the above assignment. Ensure no accidental later use.
+    uri = NULL;
+
+    bool success = mHTTPConnection->connect(mLastURI.c_str(), &extHeaders);
 
     mLastHeaders = extHeaders;
-    mLastURI = uri;
 
     mCachedSizeValid = false;
 
     if (success) {
-        AString sanitized = uriDebugString(uri);
+        AString sanitized = uriDebugString(mLastURI);
         mName = String8::format("MediaHTTP(%s)", sanitized.c_str());
     }
 
diff --git a/media/libstagefright/httplive/HTTPDownloader.cpp b/media/libstagefright/httplive/HTTPDownloader.cpp
index 861b85a..793695a 100644
--- a/media/libstagefright/httplive/HTTPDownloader.cpp
+++ b/media/libstagefright/httplive/HTTPDownloader.cpp
@@ -256,10 +256,6 @@
 
         return NULL;
     }
-
-    if (curPlaylistHash != NULL) {
-        memcpy(curPlaylistHash, hash, sizeof(hash));
-    }
 #endif
 
     sp<M3UParser> playlist =
@@ -271,6 +267,13 @@
         return NULL;
     }
 
+#if defined(__ANDROID__)
+    if (curPlaylistHash != NULL) {
+
+        memcpy(curPlaylistHash, hash, sizeof(hash));
+    }
+#endif
+
     return playlist;
 }
 
diff --git a/media/libstagefright/httplive/LiveSession.cpp b/media/libstagefright/httplive/LiveSession.cpp
index 8e8fa52..f673426 100644
--- a/media/libstagefright/httplive/LiveSession.cpp
+++ b/media/libstagefright/httplive/LiveSession.cpp
@@ -467,28 +467,28 @@
     return err;
 }
 
-status_t LiveSession::getStreamFormat(StreamType stream, sp<AMessage> *format) {
+status_t LiveSession::getStreamFormatMeta(StreamType stream, sp<MetaData> *meta) {
     if (!(mStreamMask & stream)) {
         return UNKNOWN_ERROR;
     }
 
     sp<AnotherPacketSource> packetSource = mPacketSources.valueFor(stream);
 
-    sp<MetaData> meta = packetSource->getFormat();
+    *meta = packetSource->getFormat();
 
-    if (meta == NULL) {
+    if (*meta == NULL) {
         return -EWOULDBLOCK;
     }
 
     if (stream == STREAMTYPE_AUDIO) {
         // set AAC input buffer size to 32K bytes (256kbps x 1sec)
-        meta->setInt32(kKeyMaxInputSize, 32 * 1024);
+        (*meta)->setInt32(kKeyMaxInputSize, 32 * 1024);
     } else if (stream == STREAMTYPE_VIDEO) {
-        meta->setInt32(kKeyMaxWidth, mMaxWidth);
-        meta->setInt32(kKeyMaxHeight, mMaxHeight);
+        (*meta)->setInt32(kKeyMaxWidth, mMaxWidth);
+        (*meta)->setInt32(kKeyMaxHeight, mMaxHeight);
     }
 
-    return convertMetaDataToMessage(meta, format);
+    return OK;
 }
 
 sp<HTTPDownloader> LiveSession::getHTTPDownloader() {
diff --git a/media/libstagefright/httplive/LiveSession.h b/media/libstagefright/httplive/LiveSession.h
index de7cefd..65a824e 100644
--- a/media/libstagefright/httplive/LiveSession.h
+++ b/media/libstagefright/httplive/LiveSession.h
@@ -75,7 +75,7 @@
     int64_t calculateMediaTimeUs(int64_t firstTimeUs, int64_t timeUs, int32_t discontinuitySeq);
     status_t dequeueAccessUnit(StreamType stream, sp<ABuffer> *accessUnit);
 
-    status_t getStreamFormat(StreamType stream, sp<AMessage> *format);
+    status_t getStreamFormatMeta(StreamType stream, sp<MetaData> *meta);
 
     sp<HTTPDownloader> getHTTPDownloader();
 
diff --git a/media/libstagefright/id3/ID3.cpp b/media/libstagefright/id3/ID3.cpp
index 86b668c..aaf6b3d 100644
--- a/media/libstagefright/id3/ID3.cpp
+++ b/media/libstagefright/id3/ID3.cpp
@@ -77,7 +77,10 @@
       mFirstFrameOffset(0),
       mVersion(ID3_UNKNOWN),
       mRawSize(0) {
-    sp<MemorySource> source = new MemorySource(data, size);
+    sp<MemorySource> source = new (std::nothrow) MemorySource(data, size);
+
+    if (source == NULL)
+        return;
 
     mIsValid = parseV2(source, 0);
 
@@ -545,6 +548,10 @@
         n -= skipped;
     }
 
+    if (n <= 0) {
+       return;
+    }
+
     if (encoding == 0x00) {
         // supposedly ISO 8859-1
         id->setTo((const char*)frameData + 1, n);
@@ -558,11 +565,16 @@
         const char16_t *framedata = (const char16_t *) (frameData + 1);
         char16_t *framedatacopy = NULL;
 #if BYTE_ORDER == LITTLE_ENDIAN
-        framedatacopy = new char16_t[len];
-        for (int i = 0; i < len; i++) {
-            framedatacopy[i] = bswap_16(framedata[i]);
+        if (len > 0) {
+            framedatacopy = new (std::nothrow) char16_t[len];
+            if (framedatacopy == NULL) {
+                return;
+            }
+            for (int i = 0; i < len; i++) {
+                framedatacopy[i] = bswap_16(framedata[i]);
+            }
+            framedata = framedatacopy;
         }
-        framedata = framedatacopy;
 #endif
         id->setTo(framedata, len);
         if (framedatacopy != NULL) {
@@ -575,15 +587,26 @@
         const char16_t *framedata = (const char16_t *) (frameData + 1);
         char16_t *framedatacopy = NULL;
         if (*framedata == 0xfffe) {
-            // endianness marker doesn't match host endianness, convert
-            framedatacopy = new char16_t[len];
+            // endianness marker != host endianness, convert & skip
+            if (len <= 1) {
+                return;         // nothing after the marker
+            }
+            framedatacopy = new (std::nothrow) char16_t[len];
+            if (framedatacopy == NULL) {
+                return;
+            }
             for (int i = 0; i < len; i++) {
                 framedatacopy[i] = bswap_16(framedata[i]);
             }
             framedata = framedatacopy;
-        }
-        // If the string starts with an endianness marker, skip it
-        if (*framedata == 0xfeff) {
+            // and skip over the marker
+            framedata++;
+            len--;
+        } else if (*framedata == 0xfeff) {
+            // endianness marker == host endianness, skip it
+            if (len <= 1) {
+                return;         // nothing after the marker
+            }
             framedata++;
             len--;
         }
@@ -598,12 +621,16 @@
         }
         if (eightBit) {
             // collapse to 8 bit, then let the media scanner client figure out the real encoding
-            char *frame8 = new char[len];
-            for (int i = 0; i < len; i++) {
-                frame8[i] = framedata[i];
+            char *frame8 = new (std::nothrow) char[len];
+            if (frame8 != NULL) {
+                for (int i = 0; i < len; i++) {
+                    frame8[i] = framedata[i];
+                }
+                id->setTo(frame8, len);
+                delete [] frame8;
+            } else {
+                id->setTo(framedata, len);
             }
-            id->setTo(frame8, len);
-            delete [] frame8;
         } else {
             id->setTo(framedata, len);
         }
diff --git a/media/libstagefright/include/CallbackDataSource.h b/media/libstagefright/include/CallbackDataSource.h
index f582c53..80cd1f7 100644
--- a/media/libstagefright/include/CallbackDataSource.h
+++ b/media/libstagefright/include/CallbackDataSource.h
@@ -41,6 +41,7 @@
     virtual String8 toString() {
         return mName;
     }
+    virtual sp<DecryptHandle> DrmInitialization(const char *mime = NULL);
 
 private:
     sp<IDataSource> mIDataSource;
@@ -68,6 +69,7 @@
     virtual String8 toString() {
         return mName;
     }
+    virtual sp<DecryptHandle> DrmInitialization(const char *mime = NULL);
 
 private:
     // 2kb comes from experimenting with the time-to-first-frame from a MediaPlayer
diff --git a/media/libstagefright/include/MPEG4Extractor.h b/media/libstagefright/include/MPEG4Extractor.h
index 9ed116a..89ad137 100644
--- a/media/libstagefright/include/MPEG4Extractor.h
+++ b/media/libstagefright/include/MPEG4Extractor.h
@@ -93,8 +93,8 @@
 
     sp<DataSource> mDataSource;
     status_t mInitCheck;
-    bool mHasVideo;
     uint32_t mHeaderTimescale;
+    bool mIsQT;
 
     Track *mFirstTrack, *mLastTrack;
 
diff --git a/media/libstagefright/include/OMXNodeInstance.h b/media/libstagefright/include/OMXNodeInstance.h
index bdd4811..6411267 100644
--- a/media/libstagefright/include/OMXNodeInstance.h
+++ b/media/libstagefright/include/OMXNodeInstance.h
@@ -21,6 +21,7 @@
 #include "OMX.h"
 
 #include <utils/RefBase.h>
+#include <utils/SortedVector.h>
 #include <utils/threads.h>
 
 namespace android {
@@ -151,6 +152,9 @@
     OMX_HANDLETYPE mHandle;
     sp<IOMXObserver> mObserver;
     bool mDying;
+    bool mSailed;  // configuration is set (no more meta-mode changes)
+    bool mQueriedProhibitedExtensions;
+    SortedVector<OMX_INDEXTYPE> mProhibitedExtensions;
     bool mIsSecure;
 
     // Lock only covers mGraphicBufferSource.  We can't always use mLock
@@ -204,6 +208,8 @@
     OMX::buffer_id findBufferID(OMX_BUFFERHEADERTYPE *bufferHeader);
     void invalidateBufferID(OMX::buffer_id buffer);
 
+    bool isProhibitedIndex_l(OMX_INDEXTYPE index);
+
     status_t useGraphicBuffer2_l(
             OMX_U32 portIndex, const sp<GraphicBuffer> &graphicBuffer,
             OMX::buffer_id *buffer);
diff --git a/media/libstagefright/include/SampleTable.h b/media/libstagefright/include/SampleTable.h
index 0b42229..eb1a674 100644
--- a/media/libstagefright/include/SampleTable.h
+++ b/media/libstagefright/include/SampleTable.h
@@ -24,7 +24,6 @@
 #include <media/stagefright/MediaErrors.h>
 #include <utils/RefBase.h>
 #include <utils/threads.h>
-#include <utils/Vector.h>
 
 namespace android {
 
@@ -96,6 +95,9 @@
     static const uint32_t kSampleSizeType32;
     static const uint32_t kSampleSizeTypeCompact;
 
+    // Limit the total size of all internal tables to 200MiB.
+    static const size_t kMaxTotalSize = 200 * (1 << 20);
+
     sp<DataSource> mDataSource;
     Mutex mLock;
 
@@ -113,7 +115,7 @@
 
     bool mHasTimeToSample;
     uint32_t mTimeToSampleCount;
-    Vector<uint32_t> mTimeToSample;
+    uint32_t* mTimeToSample;
 
     struct SampleTimeEntry {
         uint32_t mSampleIndex;
@@ -139,6 +141,9 @@
     };
     SampleToChunkEntry *mSampleToChunkEntries;
 
+    // Approximate size of all tables combined.
+    uint64_t mTotalSize;
+
     friend struct SampleIterator;
 
     // normally we don't round
diff --git a/media/libstagefright/include/SoftVideoDecoderOMXComponent.h b/media/libstagefright/include/SoftVideoDecoderOMXComponent.h
index 4529007..c9fd745 100644
--- a/media/libstagefright/include/SoftVideoDecoderOMXComponent.h
+++ b/media/libstagefright/include/SoftVideoDecoderOMXComponent.h
@@ -21,6 +21,7 @@
 #include "SimpleSoftOMXComponent.h"
 
 #include <media/stagefright/foundation/AHandlerReflector.h>
+#include <media/stagefright/foundation/ColorUtils.h>
 #include <media/IOMX.h>
 
 #include <utils/RefBase.h>
@@ -43,6 +44,16 @@
             OMX_COMPONENTTYPE **component);
 
 protected:
+    enum {
+        kDescribeColorAspectsIndex = kPrepareForAdaptivePlaybackIndex + 1,
+    };
+
+    enum {
+        kNotSupported,
+        kPreferBitstream,
+        kPreferContainer,
+    };
+
     virtual void onPortEnableCompleted(OMX_U32 portIndex, bool enabled);
     virtual void onReset();
 
@@ -55,15 +66,37 @@
     virtual OMX_ERRORTYPE getConfig(
             OMX_INDEXTYPE index, OMX_PTR params);
 
+    virtual OMX_ERRORTYPE setConfig(
+            OMX_INDEXTYPE index, const OMX_PTR params);
+
     virtual OMX_ERRORTYPE getExtensionIndex(
             const char *name, OMX_INDEXTYPE *index);
 
+    virtual bool supportsDescribeColorAspects();
+
+    virtual int getColorAspectPreference();
+
+    // This function sets both minimum buffer count and actual buffer count of
+    // input port to be |numInputBuffers|. It will also set both minimum buffer
+    // count and actual buffer count of output port to be |numOutputBuffers|.
     void initPorts(OMX_U32 numInputBuffers,
             OMX_U32 inputBufferSize,
             OMX_U32 numOutputBuffers,
             const char *mimeType,
             OMX_U32 minCompressionRatio = 1u);
 
+    // This function sets input port's minimum buffer count to |numMinInputBuffers|,
+    // sets input port's actual buffer count to |numInputBuffers|, sets output port's
+    // minimum buffer count to |numMinOutputBuffers| and sets output port's actual buffer
+    // count to be |numOutputBuffers|.
+    void initPorts(OMX_U32 numMinInputBuffers,
+            OMX_U32 numInputBuffers,
+            OMX_U32 inputBufferSize,
+            OMX_U32 numMinOutputBuffers,
+            OMX_U32 numOutputBuffers,
+            const char *mimeType,
+            OMX_U32 minCompressionRatio = 1u);
+
     virtual void updatePortDefinitions(bool updateCrop = true, bool updateInputSize = false);
 
     uint32_t outputBufferWidth();
@@ -74,6 +107,10 @@
         kCropSet,
         kCropChanged,
     };
+
+    // This function will handle several port change events which include
+    // size changed, crop changed, stride changed and coloraspects changed.
+    // It will trigger OMX_EventPortSettingsChanged event if necessary.
     void handlePortSettingsChange(
             bool *portWillReset, uint32_t width, uint32_t height,
             CropSettingsMode cropSettingsMode = kCropUnSet, bool fakeStride = false);
@@ -99,6 +136,29 @@
         AWAITING_ENABLED
     } mOutputPortSettingsChange;
 
+    bool mUpdateColorAspects;
+
+    Mutex mColorAspectsLock;
+    // color aspects passed from the framework.
+    ColorAspects mDefaultColorAspects;
+    // color aspects parsed from the bitstream.
+    ColorAspects mBitstreamColorAspects;
+    // final color aspects after combining the above two aspects.
+    ColorAspects mFinalColorAspects;
+
+    bool colorAspectsDiffer(const ColorAspects &a, const ColorAspects &b);
+
+    // This functions takes two color aspects and updates the mFinalColorAspects
+    // based on |preferredAspects|.
+    void updateFinalColorAspects(
+            const ColorAspects &otherAspects, const ColorAspects &preferredAspects);
+
+    // This function will update the mFinalColorAspects based on codec preference.
+    status_t handleColorAspectsChange();
+
+    // Helper function to dump the ColorAspects.
+    void dumpColorAspects(const ColorAspects &colorAspects);
+
 private:
     uint32_t mMinInputBufferSize;
     uint32_t mMinCompressionRatio;
diff --git a/media/libstagefright/include/avc_utils.h b/media/libstagefright/include/avc_utils.h
index 8e308e9..b2ef360 100644
--- a/media/libstagefright/include/avc_utils.h
+++ b/media/libstagefright/include/avc_utils.h
@@ -85,6 +85,7 @@
 
 bool IsIDR(const sp<ABuffer> &accessUnit);
 bool IsAVCReferenceFrame(const sp<ABuffer> &accessUnit);
+uint32_t FindAVCLayerId(const uint8_t *data, size_t size);
 
 const char *AVCProfileToString(uint8_t profile);
 
diff --git a/media/libstagefright/mpeg2ts/ATSParser.cpp b/media/libstagefright/mpeg2ts/ATSParser.cpp
index b863d67..844479e 100644
--- a/media/libstagefright/mpeg2ts/ATSParser.cpp
+++ b/media/libstagefright/mpeg2ts/ATSParser.cpp
@@ -701,6 +701,10 @@
         }
 
         mPayloadStarted = true;
+        // There should be at most 2 elements in |mPesStartOffsets|.
+        while (mPesStartOffsets.size() >= 2) {
+            mPesStartOffsets.erase(mPesStartOffsets.begin());
+        }
         mPesStartOffsets.push_back(offset);
     }
 
@@ -1104,15 +1108,20 @@
             mSource->queueAccessUnit(accessUnit);
         }
 
-        if ((event != NULL) && !found && mQueue->getFormat() != NULL) {
+        // Every access unit has a pesStartOffset queued in |mPesStartOffsets|.
+        off64_t pesStartOffset = -1;
+        if (!mPesStartOffsets.empty()) {
+            pesStartOffset = *mPesStartOffsets.begin();
+            mPesStartOffsets.erase(mPesStartOffsets.begin());
+        }
+
+        if (pesStartOffset >= 0 && (event != NULL) && !found && mQueue->getFormat() != NULL) {
             int32_t sync = 0;
             if (accessUnit->meta()->findInt32("isSync", &sync) && sync) {
                 int64_t timeUs;
                 if (accessUnit->meta()->findInt64("timeUs", &timeUs)) {
                     found = true;
-                    off64_t pesStartOffset = *mPesStartOffsets.begin();
                     event->init(pesStartOffset, mSource, timeUs);
-                    mPesStartOffsets.erase(mPesStartOffsets.begin());
                 }
             }
         }
diff --git a/media/libstagefright/omx/GraphicBufferSource.cpp b/media/libstagefright/omx/GraphicBufferSource.cpp
index 63424f7..1d819b5 100644
--- a/media/libstagefright/omx/GraphicBufferSource.cpp
+++ b/media/libstagefright/omx/GraphicBufferSource.cpp
@@ -139,13 +139,13 @@
     mRepeatLastFrameTimestamp(-1ll),
     mLatestBufferId(-1),
     mLatestBufferFrameNum(0),
-    mLatestBufferUseCount(0),
     mLatestBufferFence(Fence::NO_FENCE),
     mRepeatBufferDeferred(false),
     mTimePerCaptureUs(-1ll),
     mTimePerFrameUs(-1ll),
     mPrevCaptureUs(-1ll),
-    mPrevFrameUs(-1ll) {
+    mPrevFrameUs(-1ll),
+    mInputBufferTimeOffsetUs(0ll) {
 
     ALOGV("GraphicBufferSource w=%u h=%u c=%u",
             bufferWidth, bufferHeight, bufferCount);
@@ -397,12 +397,16 @@
     sp<Fence> fence = new Fence(fenceFd);
     if (mBufferSlot[id] != NULL &&
         mBufferSlot[id]->handle == codecBuffer.mGraphicBuffer->handle) {
-        ALOGV("cbi %d matches bq slot %d, handle=%p",
-                cbi, id, mBufferSlot[id]->handle);
+        mBufferUseCount[id]--;
 
-        if (id == mLatestBufferId) {
-            CHECK_GT(mLatestBufferUseCount--, 0);
-        } else {
+        ALOGV("codecBufferEmptied: slot=%d, cbi=%d, useCount=%d, handle=%p",
+                id, cbi, mBufferUseCount[id], mBufferSlot[id]->handle);
+
+        if (mBufferUseCount[id] < 0) {
+            ALOGW("mBufferUseCount for bq slot %d < 0 (=%d)", id, mBufferUseCount[id]);
+            mBufferUseCount[id] = 0;
+        }
+        if (id != mLatestBufferId && mBufferUseCount[id] == 0) {
             releaseBuffer(id, codecBuffer.mFrameNumber, mBufferSlot[id], fence);
         }
     } else {
@@ -613,6 +617,7 @@
     if (item.mGraphicBuffer != NULL) {
         ALOGV("fillCodecBuffer_l: setting mBufferSlot %d", item.mSlot);
         mBufferSlot[item.mSlot] = item.mGraphicBuffer;
+        mBufferUseCount[item.mSlot] = 0;
     }
 
     if (item.mDataSpace != mLastDataSpace) {
@@ -698,7 +703,7 @@
         return false;
     }
 
-    ++mLatestBufferUseCount;
+    ++mBufferUseCount[item.mSlot];
 
     /* repeat last frame up to kRepeatLastFrameCount times.
      * in case of static scene, a single repeat might not get rid of encoder
@@ -719,10 +724,8 @@
 
 void GraphicBufferSource::setLatestBuffer_l(
         const BufferItem &item, bool dropped) {
-    ALOGV("setLatestBuffer_l");
-
     if (mLatestBufferId >= 0) {
-        if (mLatestBufferUseCount == 0) {
+        if (mBufferUseCount[mLatestBufferId] == 0) {
             releaseBuffer(mLatestBufferId, mLatestBufferFrameNum,
                     mBufferSlot[mLatestBufferId], mLatestBufferFence);
             // mLatestBufferFence will be set to new fence just below
@@ -733,7 +736,13 @@
     mLatestBufferFrameNum = item.mFrameNumber;
     mRepeatLastFrameTimestamp = item.mTimestamp + mRepeatAfterUs * 1000;
 
-    mLatestBufferUseCount = dropped ? 0 : 1;
+    if (!dropped) {
+        ++mBufferUseCount[item.mSlot];
+    }
+
+    ALOGV("setLatestBuffer_l: slot=%d, useCount=%d",
+            item.mSlot, mBufferUseCount[item.mSlot]);
+
     mRepeatBufferDeferred = false;
     mRepeatLastFrameCount = kRepeatLastFrameCount;
     mLatestBufferFence = item.mFence;
@@ -774,8 +783,11 @@
 
 int64_t GraphicBufferSource::getTimestamp(const BufferItem &item) {
     int64_t timeUs = item.mTimestamp / 1000;
+    timeUs += mInputBufferTimeOffsetUs;
 
-    if (mTimePerCaptureUs > 0ll) {
+    if (mTimePerCaptureUs > 0ll
+            && (mTimePerCaptureUs > 2 * mTimePerFrameUs
+            || mTimePerFrameUs > 2 * mTimePerCaptureUs)) {
         // Time lapse or slow motion mode
         if (mPrevCaptureUs < 0ll) {
             // first capture
@@ -800,40 +812,45 @@
                 static_cast<long long>(mPrevFrameUs));
 
         return mPrevFrameUs;
-    } else if (mMaxTimestampGapUs > 0ll) {
-        /* Cap timestamp gap between adjacent frames to specified max
-         *
-         * In the scenario of cast mirroring, encoding could be suspended for
-         * prolonged periods. Limiting the pts gap to workaround the problem
-         * where encoder's rate control logic produces huge frames after a
-         * long period of suspension.
-         */
-
+    } else {
         int64_t originalTimeUs = timeUs;
-        if (mPrevOriginalTimeUs >= 0ll) {
-            if (originalTimeUs < mPrevOriginalTimeUs) {
+        if (originalTimeUs <= mPrevOriginalTimeUs) {
                 // Drop the frame if it's going backward in time. Bad timestamp
                 // could disrupt encoder's rate control completely.
-                ALOGW("Dropping frame that's going backward in time");
-                return -1;
-            }
-            int64_t timestampGapUs = originalTimeUs - mPrevOriginalTimeUs;
-            timeUs = (timestampGapUs < mMaxTimestampGapUs ?
-                    timestampGapUs : mMaxTimestampGapUs) + mPrevModifiedTimeUs;
+            ALOGW("Dropping frame that's going backward in time");
+            return -1;
         }
+
+        if (mMaxTimestampGapUs > 0ll) {
+            //TODO: Fix the case when mMaxTimestampGapUs and mTimePerCaptureUs are both set.
+
+            /* Cap timestamp gap between adjacent frames to specified max
+             *
+             * In the scenario of cast mirroring, encoding could be suspended for
+             * prolonged periods. Limiting the pts gap to workaround the problem
+             * where encoder's rate control logic produces huge frames after a
+             * long period of suspension.
+             */
+            if (mPrevOriginalTimeUs >= 0ll) {
+                int64_t timestampGapUs = originalTimeUs - mPrevOriginalTimeUs;
+                timeUs = (timestampGapUs < mMaxTimestampGapUs ?
+                    timestampGapUs : mMaxTimestampGapUs) + mPrevModifiedTimeUs;
+            }
+            mOriginalTimeUs.add(timeUs, originalTimeUs);
+            ALOGV("IN  timestamp: %lld -> %lld",
+                static_cast<long long>(originalTimeUs),
+                static_cast<long long>(timeUs));
+        }
+
         mPrevOriginalTimeUs = originalTimeUs;
         mPrevModifiedTimeUs = timeUs;
-        mOriginalTimeUs.add(timeUs, originalTimeUs);
-        ALOGV("IN  timestamp: %lld -> %lld",
-            static_cast<long long>(originalTimeUs),
-            static_cast<long long>(timeUs));
     }
 
     return timeUs;
 }
 
 status_t GraphicBufferSource::submitBuffer_l(const BufferItem &item, int cbi) {
-    ALOGV("submitBuffer_l cbi=%d", cbi);
+    ALOGV("submitBuffer_l: slot=%d, cbi=%d", item.mSlot, cbi);
 
     int64_t timeUs = getTimestamp(item);
     if (timeUs < 0ll) {
@@ -927,6 +944,7 @@
 void GraphicBufferSource::releaseBuffer(
         int &id, uint64_t frameNum,
         const sp<GraphicBuffer> buffer, const sp<Fence> &fence) {  // NOLINT
+    ALOGV("releaseBuffer: slot=%d", id);
     if (mIsPersistent) {
         mConsumer->detachBuffer(id);
         mBufferSlot[id] = NULL;
@@ -970,6 +988,7 @@
             if (item.mGraphicBuffer != NULL) {
                 ALOGV("onFrameAvailable: setting mBufferSlot %d", item.mSlot);
                 mBufferSlot[item.mSlot] = item.mGraphicBuffer;
+                mBufferUseCount[item.mSlot] = 0;
             }
 
             releaseBuffer(item.mSlot, item.mFrameNumber,
@@ -1003,6 +1022,7 @@
     for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
         if ((slotMask & 0x01) != 0) {
             mBufferSlot[i] = NULL;
+            mBufferUseCount[i] = 0;
         }
         slotMask >>= 1;
     }
@@ -1045,6 +1065,18 @@
     return OK;
 }
 
+status_t GraphicBufferSource::setInputBufferTimeOffset(int64_t timeOffsetUs) {
+    Mutex::Autolock autoLock(mMutex);
+
+    // timeOffsetUs must be negative for adjustment.
+    if (timeOffsetUs >= 0ll) {
+        return INVALID_OPERATION;
+    }
+
+    mInputBufferTimeOffsetUs = timeOffsetUs;
+    return OK;
+}
+
 status_t GraphicBufferSource::setMaxFps(float maxFps) {
     Mutex::Autolock autoLock(mMutex);
 
diff --git a/media/libstagefright/omx/GraphicBufferSource.h b/media/libstagefright/omx/GraphicBufferSource.h
index c8b0e62..aa4ceb3 100644
--- a/media/libstagefright/omx/GraphicBufferSource.h
+++ b/media/libstagefright/omx/GraphicBufferSource.h
@@ -131,6 +131,10 @@
     // of suspension on input.
     status_t setMaxTimestampGapUs(int64_t maxGapUs);
 
+    // Sets the input buffer timestamp offset.
+    // When set, the sample's timestamp will be adjusted with the timeOffsetUs.
+    status_t setInputBufferTimeOffset(int64_t timeOffsetUs);
+
     // When set, the max frame rate fed to the encoder will be capped at maxFps.
     status_t setMaxFps(float maxFps);
 
@@ -291,6 +295,7 @@
     // is done processing a GraphicBuffer, we can use this to map back
     // to a slot number.
     sp<GraphicBuffer> mBufferSlot[BufferQueue::NUM_BUFFER_SLOTS];
+    int32_t mBufferUseCount[BufferQueue::NUM_BUFFER_SLOTS];
 
     // Tracks codec buffers.
     Vector<CodecBuffer> mCodecBuffers;
@@ -323,7 +328,6 @@
 
     int mLatestBufferId;
     uint64_t mLatestBufferFrameNum;
-    int32_t mLatestBufferUseCount;
     sp<Fence> mLatestBufferFence;
 
     // The previous buffer should've been repeated but
@@ -336,6 +340,8 @@
     int64_t mPrevCaptureUs;
     int64_t mPrevFrameUs;
 
+    int64_t mInputBufferTimeOffsetUs;
+
     MetadataBufferType mMetadataBufferType;
     ColorAspects mColorAspects;
 
diff --git a/media/libstagefright/omx/OMXNodeInstance.cpp b/media/libstagefright/omx/OMXNodeInstance.cpp
index 0c1b2a2..8c10310 100644
--- a/media/libstagefright/omx/OMXNodeInstance.cpp
+++ b/media/libstagefright/omx/OMXNodeInstance.cpp
@@ -93,26 +93,34 @@
 namespace android {
 
 struct BufferMeta {
-    explicit BufferMeta(const sp<IMemory> &mem, OMX_U32 portIndex, bool is_backup = false)
+    explicit BufferMeta(
+            const sp<IMemory> &mem, OMX_U32 portIndex, bool copyToOmx,
+            bool copyFromOmx, OMX_U8 *backup)
         : mMem(mem),
-          mIsBackup(is_backup),
-          mPortIndex(portIndex) {
+          mCopyFromOmx(copyFromOmx),
+          mCopyToOmx(copyToOmx),
+          mPortIndex(portIndex),
+          mBackup(backup) {
     }
 
     explicit BufferMeta(size_t size, OMX_U32 portIndex)
         : mSize(size),
-          mIsBackup(false),
-          mPortIndex(portIndex) {
+          mCopyFromOmx(false),
+          mCopyToOmx(false),
+          mPortIndex(portIndex),
+          mBackup(NULL) {
     }
 
     explicit BufferMeta(const sp<GraphicBuffer> &graphicBuffer, OMX_U32 portIndex)
         : mGraphicBuffer(graphicBuffer),
-          mIsBackup(false),
-          mPortIndex(portIndex) {
+          mCopyFromOmx(false),
+          mCopyToOmx(false),
+          mPortIndex(portIndex),
+          mBackup(NULL) {
     }
 
     void CopyFromOMX(const OMX_BUFFERHEADERTYPE *header) {
-        if (!mIsBackup) {
+        if (!mCopyFromOmx) {
             return;
         }
 
@@ -123,7 +131,7 @@
     }
 
     void CopyToOMX(const OMX_BUFFERHEADERTYPE *header) {
-        if (!mIsBackup) {
+        if (!mCopyToOmx) {
             return;
         }
 
@@ -163,13 +171,19 @@
         return mPortIndex;
     }
 
+    ~BufferMeta() {
+        delete[] mBackup;
+    }
+
 private:
     sp<GraphicBuffer> mGraphicBuffer;
     sp<NativeHandle> mNativeHandle;
     sp<IMemory> mMem;
     size_t mSize;
-    bool mIsBackup;
+    bool mCopyFromOmx;
+    bool mCopyToOmx;
     OMX_U32 mPortIndex;
+    OMX_U8 *mBackup;
 
     BufferMeta(const BufferMeta &);
     BufferMeta &operator=(const BufferMeta &);
@@ -196,6 +210,8 @@
       mHandle(NULL),
       mObserver(observer),
       mDying(false),
+      mSailed(false),
+      mQueriedProhibitedExtensions(false),
       mBufferIDCount(0)
 {
     mName = ADebug::GetDebugName(name);
@@ -355,7 +371,11 @@
 
 status_t OMXNodeInstance::sendCommand(
         OMX_COMMANDTYPE cmd, OMX_S32 param) {
-    const sp<GraphicBufferSource>& bufferSource(getGraphicBufferSource());
+    if (cmd == OMX_CommandStateSet) {
+        // There are no configurations past first StateSet command.
+        mSailed = true;
+    }
+    const sp<GraphicBufferSource> bufferSource(getGraphicBufferSource());
     if (bufferSource != NULL && cmd == OMX_CommandStateSet) {
         if (param == OMX_StateIdle) {
             // Initiating transition from Executing -> Idle
@@ -388,10 +408,57 @@
     return StatusFromOMXError(err);
 }
 
+bool OMXNodeInstance::isProhibitedIndex_l(OMX_INDEXTYPE index) {
+    // these extensions can only be used from OMXNodeInstance, not by clients directly.
+    static const char *restricted_extensions[] = {
+        "OMX.google.android.index.storeMetaDataInBuffers",
+        "OMX.google.android.index.storeANWBufferInMetadata",
+        "OMX.google.android.index.prepareForAdaptivePlayback",
+        "OMX.google.android.index.configureVideoTunnelMode",
+        "OMX.google.android.index.useAndroidNativeBuffer2",
+        "OMX.google.android.index.useAndroidNativeBuffer",
+        "OMX.google.android.index.enableAndroidNativeBuffers",
+        "OMX.google.android.index.allocateNativeHandle",
+        "OMX.google.android.index.getAndroidNativeBufferUsage",
+    };
+
+    if ((index > OMX_IndexComponentStartUnused && index <= OMX_IndexParamStandardComponentRole)
+            || (index > OMX_IndexPortStartUnused && index <= OMX_IndexParamCompBufferSupplier)
+            || (index > OMX_IndexAudioStartUnused && index <= OMX_IndexConfigAudioChannelVolume)
+            || (index > OMX_IndexVideoStartUnused && index <= OMX_IndexConfigVideoNalSize)
+            || (index > OMX_IndexCommonStartUnused
+                    && index <= OMX_IndexConfigCommonTransitionEffect)
+            || (index > (OMX_INDEXTYPE)OMX_IndexExtAudioStartUnused
+                    && index <= (OMX_INDEXTYPE)OMX_IndexParamAudioProfileQuerySupported)
+            || (index > (OMX_INDEXTYPE)OMX_IndexExtVideoStartUnused
+                    && index <= (OMX_INDEXTYPE)OMX_IndexConfigAndroidVideoTemporalLayering)
+            || (index > (OMX_INDEXTYPE)OMX_IndexExtOtherStartUnused
+                    && index <= (OMX_INDEXTYPE)OMX_IndexParamConsumerUsageBits)) {
+        return false;
+    }
+
+    if (!mQueriedProhibitedExtensions) {
+        for (size_t i = 0; i < NELEM(restricted_extensions); ++i) {
+            OMX_INDEXTYPE ext;
+            if (OMX_GetExtensionIndex(mHandle, (OMX_STRING)restricted_extensions[i], &ext) == OMX_ErrorNone) {
+                mProhibitedExtensions.add(ext);
+            }
+        }
+        mQueriedProhibitedExtensions = true;
+    }
+
+    return mProhibitedExtensions.indexOf(index) >= 0;
+}
+
 status_t OMXNodeInstance::getParameter(
         OMX_INDEXTYPE index, void *params, size_t /* size */) {
     Mutex::Autolock autoLock(mLock);
 
+    if (isProhibitedIndex_l(index)) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return BAD_INDEX;
+    }
+
     OMX_ERRORTYPE err = OMX_GetParameter(mHandle, index, params);
     OMX_INDEXEXTTYPE extIndex = (OMX_INDEXEXTTYPE)index;
     // some errors are expected for getParameter
@@ -407,6 +474,11 @@
     OMX_INDEXEXTTYPE extIndex = (OMX_INDEXEXTTYPE)index;
     CLOG_CONFIG(setParameter, "%s(%#x), %zu@%p)", asString(extIndex), index, size, params);
 
+    if (isProhibitedIndex_l(index)) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return BAD_INDEX;
+    }
+
     OMX_ERRORTYPE err = OMX_SetParameter(
             mHandle, index, const_cast<void *>(params));
     CLOG_IF_ERROR(setParameter, err, "%s(%#x)", asString(extIndex), index);
@@ -417,6 +489,11 @@
         OMX_INDEXTYPE index, void *params, size_t /* size */) {
     Mutex::Autolock autoLock(mLock);
 
+    if (isProhibitedIndex_l(index)) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return BAD_INDEX;
+    }
+
     OMX_ERRORTYPE err = OMX_GetConfig(mHandle, index, params);
     OMX_INDEXEXTTYPE extIndex = (OMX_INDEXEXTTYPE)index;
     // some errors are expected for getConfig
@@ -432,6 +509,11 @@
     OMX_INDEXEXTTYPE extIndex = (OMX_INDEXEXTTYPE)index;
     CLOG_CONFIG(setConfig, "%s(%#x), %zu@%p)", asString(extIndex), index, size, params);
 
+    if (isProhibitedIndex_l(index)) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return BAD_INDEX;
+    }
+
     OMX_ERRORTYPE err = OMX_SetConfig(
             mHandle, index, const_cast<void *>(params));
     CLOG_IF_ERROR(setConfig, err, "%s(%#x)", asString(extIndex), index);
@@ -448,6 +530,12 @@
 
 status_t OMXNodeInstance::enableNativeBuffers(
         OMX_U32 portIndex, OMX_BOOL graphic, OMX_BOOL enable) {
+    if (portIndex >= NELEM(mSecureBufferType)) {
+        ALOGE("b/31385713, portIndex(%u)", portIndex);
+        android_errorWriteLog(0x534e4554, "31385713");
+        return BAD_VALUE;
+    }
+
     Mutex::Autolock autoLock(mLock);
     CLOG_CONFIG(enableNativeBuffers, "%s:%u%s, %d", portString(portIndex), portIndex,
                 graphic ? ", graphic" : "", enable);
@@ -534,6 +622,10 @@
 
 status_t OMXNodeInstance::storeMetaDataInBuffers_l(
         OMX_U32 portIndex, OMX_BOOL enable, MetadataBufferType *type) {
+    if (mSailed) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return INVALID_OPERATION;
+    }
     if (portIndex != kPortIndexInput && portIndex != kPortIndexOutput) {
         android_errorWriteLog(0x534e4554, "26324358");
         if (type != NULL) {
@@ -611,6 +703,10 @@
         OMX_U32 portIndex, OMX_BOOL enable, OMX_U32 maxFrameWidth,
         OMX_U32 maxFrameHeight) {
     Mutex::Autolock autolock(mLock);
+    if (mSailed) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return INVALID_OPERATION;
+    }
     CLOG_CONFIG(prepareForAdaptivePlayback, "%s:%u en=%d max=%ux%u",
             portString(portIndex), portIndex, enable, maxFrameWidth, maxFrameHeight);
 
@@ -641,6 +737,10 @@
         OMX_U32 portIndex, OMX_BOOL tunneled, OMX_U32 audioHwSync,
         native_handle_t **sidebandHandle) {
     Mutex::Autolock autolock(mLock);
+    if (mSailed) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return INVALID_OPERATION;
+    }
     CLOG_CONFIG(configureVideoTunnelMode, "%s:%u tun=%d sync=%u",
             portString(portIndex), portIndex, tunneled, audioHwSync);
 
@@ -688,21 +788,46 @@
     }
 
     Mutex::Autolock autoLock(mLock);
-    if (allottedSize > params->size()) {
+    if (allottedSize > params->size() || portIndex >= NELEM(mNumPortBuffers)) {
         return BAD_VALUE;
     }
 
-    BufferMeta *buffer_meta = new BufferMeta(params, portIndex);
+    // metadata buffers are not connected cross process
+    // use a backup buffer instead of the actual buffer
+    BufferMeta *buffer_meta;
+    bool useBackup = mMetadataType[portIndex] != kMetadataBufferTypeInvalid;
+    OMX_U8 *data = static_cast<OMX_U8 *>(params->pointer());
+    // allocate backup buffer
+    if (useBackup) {
+        data = new (std::nothrow) OMX_U8[allottedSize];
+        if (data == NULL) {
+            return NO_MEMORY;
+        }
+        memset(data, 0, allottedSize);
+
+        // if we are not connecting the buffers, the sizes must match
+        if (allottedSize != params->size()) {
+            CLOG_ERROR(useBuffer, BAD_VALUE, SIMPLE_BUFFER(portIndex, (size_t)allottedSize, data));
+            delete[] data;
+            return BAD_VALUE;
+        }
+
+        buffer_meta = new BufferMeta(
+                params, portIndex, false /* copyToOmx */, false /* copyFromOmx */, data);
+    } else {
+        buffer_meta = new BufferMeta(
+                params, portIndex, false /* copyToOmx */, false /* copyFromOmx */, NULL);
+    }
 
     OMX_BUFFERHEADERTYPE *header;
 
     OMX_ERRORTYPE err = OMX_UseBuffer(
             mHandle, &header, portIndex, buffer_meta,
-            allottedSize, static_cast<OMX_U8 *>(params->pointer()));
+            allottedSize, data);
 
     if (err != OMX_ErrorNone) {
         CLOG_ERROR(useBuffer, err, SIMPLE_BUFFER(
-                portIndex, (size_t)allottedSize, params->pointer()));
+                portIndex, (size_t)allottedSize, data));
 
         delete buffer_meta;
         buffer_meta = NULL;
@@ -901,7 +1026,7 @@
     // update backup buffer for input, codec buffer for output
     return updateGraphicBufferInMeta_l(
             portIndex, graphicBuffer, buffer, header,
-            portIndex == kPortIndexOutput /* updateCodecBuffer */);
+            true /* updateCodecBuffer */);
 }
 
 status_t OMXNodeInstance::updateNativeHandleInMeta(
@@ -919,9 +1044,9 @@
     }
 
     BufferMeta *bufferMeta = (BufferMeta *)(header->pAppPrivate);
-    // update backup buffer for input, codec buffer for output
+    // update backup buffer
     sp<ABuffer> data = bufferMeta->getBuffer(
-            header, portIndex == kPortIndexInput /* backup */, false /* limit */);
+            header, false /* backup */, false /* limit */);
     bufferMeta->setNativeHandle(nativeHandle);
     if (mMetadataType[portIndex] == kMetadataBufferTypeNativeHandleSource
             && data->capacity() >= sizeof(VideoNativeHandleMetadata)) {
@@ -945,7 +1070,16 @@
         OMX_U32 portIndex, const sp<IGraphicBufferConsumer> &bufferConsumer, MetadataBufferType *type) {
     status_t err;
 
-    const sp<GraphicBufferSource>& surfaceCheck = getGraphicBufferSource();
+    // only allow graphic source on input port, when there are no allocated buffers yet
+    if (portIndex != kPortIndexInput) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return BAD_VALUE;
+    } else if (mNumPortBuffers[portIndex] > 0) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return INVALID_OPERATION;
+    }
+
+    const sp<GraphicBufferSource> surfaceCheck = getGraphicBufferSource();
     if (surfaceCheck != NULL) {
         if (portIndex < NELEM(mMetadataType) && type != NULL) {
             *type = mMetadataType[portIndex];
@@ -1088,6 +1222,12 @@
         return BAD_VALUE;
     }
 
+    if (portIndex >= NELEM(mSecureBufferType)) {
+        ALOGE("b/31385713, portIndex(%u)", portIndex);
+        android_errorWriteLog(0x534e4554, "31385713");
+        return BAD_VALUE;
+    }
+
     Mutex::Autolock autoLock(mLock);
 
     BufferMeta *buffer_meta = new BufferMeta(size, portIndex);
@@ -1141,11 +1281,18 @@
     }
 
     Mutex::Autolock autoLock(mLock);
-    if (allottedSize > params->size()) {
+    if (allottedSize > params->size() || portIndex >= NELEM(mNumPortBuffers)) {
         return BAD_VALUE;
     }
 
-    BufferMeta *buffer_meta = new BufferMeta(params, portIndex, true);
+    // metadata buffers are not connected cross process; only copy if not meta
+    bool copy = mMetadataType[portIndex] == kMetadataBufferTypeInvalid;
+
+    BufferMeta *buffer_meta = new BufferMeta(
+            params, portIndex,
+            (portIndex == kPortIndexInput) && copy /* copyToOmx */,
+            (portIndex == kPortIndexOutput) && copy /* copyFromOmx */,
+            NULL /* data */);
 
     OMX_BUFFERHEADERTYPE *header;
 
@@ -1243,6 +1390,12 @@
         OMX_U32 flags, OMX_TICKS timestamp, int fenceFd) {
     Mutex::Autolock autoLock(mLock);
 
+    // no emptybuffer if using input surface
+    if (getGraphicBufferSource() != NULL) {
+        android_errorWriteLog(0x534e4554, "29422020");
+        return INVALID_OPERATION;
+    }
+
     OMX_BUFFERHEADERTYPE *header = findBufferHeader(buffer, kPortIndexInput);
     if (header == NULL) {
         ALOGE("b/25884056");
@@ -1250,23 +1403,11 @@
     }
     BufferMeta *buffer_meta =
         static_cast<BufferMeta *>(header->pAppPrivate);
-    sp<ABuffer> backup = buffer_meta->getBuffer(header, true /* backup */, false /* limit */);
-    sp<ABuffer> codec = buffer_meta->getBuffer(header, false /* backup */, false /* limit */);
 
-    // convert incoming ANW meta buffers if component is configured for gralloc metadata mode
-    // ignore rangeOffset in this case
-    if (mMetadataType[kPortIndexInput] == kMetadataBufferTypeGrallocSource
-            && backup->capacity() >= sizeof(VideoNativeMetadata)
-            && codec->capacity() >= sizeof(VideoGrallocMetadata)
-            && ((VideoNativeMetadata *)backup->base())->eType
-                    == kMetadataBufferTypeANWBuffer) {
-        VideoNativeMetadata &backupMeta = *(VideoNativeMetadata *)backup->base();
-        VideoGrallocMetadata &codecMeta = *(VideoGrallocMetadata *)codec->base();
-        CLOG_BUFFER(emptyBuffer, "converting ANWB %p to handle %p",
-                backupMeta.pBuffer, backupMeta.pBuffer->handle);
-        codecMeta.pHandle = backupMeta.pBuffer != NULL ? backupMeta.pBuffer->handle : NULL;
-        codecMeta.eType = kMetadataBufferTypeGrallocSource;
-        header->nFilledLen = rangeLength ? sizeof(codecMeta) : 0;
+    // set up proper filled length if component is configured for gralloc metadata mode
+    // ignore rangeOffset in this case (as client may be assuming ANW meta buffers).
+    if (mMetadataType[kPortIndexInput] == kMetadataBufferTypeGrallocSource) {
+        header->nFilledLen = rangeLength ? sizeof(VideoGrallocMetadata) : 0;
         header->nOffset = 0;
     } else {
         // rangeLength and rangeOffset must be a subset of the allocated data in the buffer.
@@ -1445,6 +1586,7 @@
         case IOMX::INTERNAL_OPTION_MAX_FPS:           return "MAX_FPS";
         case IOMX::INTERNAL_OPTION_START_TIME:        return "START_TIME";
         case IOMX::INTERNAL_OPTION_TIME_LAPSE:        return "TIME_LAPSE";
+        case IOMX::INTERNAL_OPTION_TIME_OFFSET:       return "TIME_OFFSET";
         default:                                      return def;
     }
 }
@@ -1473,6 +1615,7 @@
         case IOMX::INTERNAL_OPTION_MAX_FPS:
         case IOMX::INTERNAL_OPTION_START_TIME:
         case IOMX::INTERNAL_OPTION_TIME_LAPSE:
+        case IOMX::INTERNAL_OPTION_TIME_OFFSET:
         case IOMX::INTERNAL_OPTION_COLOR_ASPECTS:
         {
             const sp<GraphicBufferSource> &bufferSource =
@@ -1499,6 +1642,13 @@
 
                 CLOG_CONFIG(setInternalOption, "delayUs=%lld", (long long)delayUs);
                 return bufferSource->setRepeatPreviousFrameDelayUs(delayUs);
+            } else if (type == IOMX::INTERNAL_OPTION_TIME_OFFSET) {
+                int64_t timeOffsetUs;
+                if (!getInternalOption(data, size, &timeOffsetUs)) {
+                    return INVALID_OPERATION;
+                }
+                CLOG_CONFIG(setInternalOption, "bufferOffsetUs=%lld", (long long)timeOffsetUs);
+                return bufferSource->setInputBufferTimeOffset(timeOffsetUs);
             } else if (type == IOMX::INTERNAL_OPTION_MAX_TIMESTAMP_GAP) {
                 int64_t maxGapUs;
                 if (!getInternalOption(data, size, &maxGapUs)) {
@@ -1692,6 +1842,13 @@
             && arg2 == OMX_StateExecuting) {
         bufferSource->omxExecuting();
     }
+
+    // allow configuration if we return to the loaded state
+    if (event == OMX_EventCmdComplete
+            && arg1 == OMX_CommandStateSet
+            && arg2 == OMX_StateLoaded) {
+        mSailed = false;
+    }
 }
 
 // static
diff --git a/media/libstagefright/omx/SimpleSoftOMXComponent.cpp b/media/libstagefright/omx/SimpleSoftOMXComponent.cpp
index 60c1e2e..7c975f7 100644
--- a/media/libstagefright/omx/SimpleSoftOMXComponent.cpp
+++ b/media/libstagefright/omx/SimpleSoftOMXComponent.cpp
@@ -426,7 +426,19 @@
 }
 
 void SimpleSoftOMXComponent::onChangeState(OMX_STATETYPE state) {
+    ALOGV("%p requesting change from %d to %d", this, mState, state);
     // We shouldn't be in a state transition already.
+
+    if (mState == OMX_StateLoaded
+            && mTargetState == OMX_StateIdle
+            && state == OMX_StateLoaded) {
+        // OMX specifically allows "canceling" a state transition from loaded
+        // to idle. Pretend we made it to idle, and go back to loaded
+        ALOGV("load->idle canceled");
+        mState = mTargetState = OMX_StateIdle;
+        state = OMX_StateLoaded;
+    }
+
     CHECK_EQ((int)mState, (int)mTargetState);
 
     switch (mState) {
@@ -469,6 +481,13 @@
     CHECK_EQ((int)port->mTransition, (int)PortInfo::NONE);
     CHECK(port->mDef.bEnabled == !enable);
 
+    if (port->mDef.eDir != OMX_DirOutput) {
+        ALOGE("Port enable/disable allowed only on output ports.");
+        notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
+        android_errorWriteLog(0x534e4554, "29421804");
+        return;
+    }
+
     if (!enable) {
         port->mDef.bEnabled = OMX_FALSE;
         port->mTransition = PortInfo::DISABLING;
@@ -599,6 +618,7 @@
         }
 
         if (transitionComplete) {
+            ALOGV("state transition from %d to %d complete", mState, mTargetState);
             mState = mTargetState;
 
             if (mState == OMX_StateLoaded) {
@@ -606,6 +626,8 @@
             }
 
             notify(OMX_EventCmdComplete, OMX_CommandStateSet, mState, NULL);
+        } else {
+            ALOGV("state transition from %d to %d not yet complete", mState, mTargetState);
         }
     }
 
diff --git a/media/libstagefright/omx/SoftVideoDecoderOMXComponent.cpp b/media/libstagefright/omx/SoftVideoDecoderOMXComponent.cpp
index d3553bd..409cef7 100644
--- a/media/libstagefright/omx/SoftVideoDecoderOMXComponent.cpp
+++ b/media/libstagefright/omx/SoftVideoDecoderOMXComponent.cpp
@@ -68,6 +68,11 @@
         mCodingType(codingType),
         mProfileLevels(profileLevels),
         mNumProfileLevels(numProfileLevels) {
+
+    // init all the color aspects to be Unspecified.
+    memset(&mDefaultColorAspects, 0, sizeof(ColorAspects));
+    memset(&mBitstreamColorAspects, 0, sizeof(ColorAspects));
+    memset(&mFinalColorAspects, 0, sizeof(ColorAspects));
 }
 
 void SoftVideoDecoderOMXComponent::initPorts(
@@ -76,6 +81,18 @@
         OMX_U32 numOutputBuffers,
         const char *mimeType,
         OMX_U32 minCompressionRatio) {
+    initPorts(numInputBuffers, numInputBuffers, inputBufferSize,
+            numOutputBuffers, numOutputBuffers, mimeType, minCompressionRatio);
+}
+
+void SoftVideoDecoderOMXComponent::initPorts(
+        OMX_U32 numMinInputBuffers,
+        OMX_U32 numInputBuffers,
+        OMX_U32 inputBufferSize,
+        OMX_U32 numMinOutputBuffers,
+        OMX_U32 numOutputBuffers,
+        const char *mimeType,
+        OMX_U32 minCompressionRatio) {
     mMinInputBufferSize = inputBufferSize;
     mMinCompressionRatio = minCompressionRatio;
 
@@ -84,8 +101,8 @@
 
     def.nPortIndex = kInputPortIndex;
     def.eDir = OMX_DirInput;
-    def.nBufferCountMin = numInputBuffers;
-    def.nBufferCountActual = def.nBufferCountMin;
+    def.nBufferCountMin = numMinInputBuffers;
+    def.nBufferCountActual = numInputBuffers;
     def.nBufferSize = inputBufferSize;
     def.bEnabled = OMX_TRUE;
     def.bPopulated = OMX_FALSE;
@@ -107,8 +124,8 @@
 
     def.nPortIndex = kOutputPortIndex;
     def.eDir = OMX_DirOutput;
-    def.nBufferCountMin = numOutputBuffers;
-    def.nBufferCountActual = def.nBufferCountMin;
+    def.nBufferCountMin = numMinOutputBuffers;
+    def.nBufferCountActual = numOutputBuffers;
     def.bEnabled = OMX_TRUE;
     def.bPopulated = OMX_FALSE;
     def.eDomain = OMX_PortDomainVideo;
@@ -224,9 +241,66 @@
             notify(OMX_EventPortSettingsChanged, kOutputPortIndex,
                    OMX_IndexConfigCommonOutputCrop, NULL);
         }
+    } else if (mUpdateColorAspects) {
+        notify(OMX_EventPortSettingsChanged, kOutputPortIndex,
+                kDescribeColorAspectsIndex, NULL);
+        mUpdateColorAspects = false;
     }
 }
 
+void SoftVideoDecoderOMXComponent::dumpColorAspects(const ColorAspects &colorAspects) {
+    ALOGD("dumpColorAspects: (R:%d(%s), P:%d(%s), M:%d(%s), T:%d(%s)) ",
+            colorAspects.mRange, asString(colorAspects.mRange),
+            colorAspects.mPrimaries, asString(colorAspects.mPrimaries),
+            colorAspects.mMatrixCoeffs, asString(colorAspects.mMatrixCoeffs),
+            colorAspects.mTransfer, asString(colorAspects.mTransfer));
+}
+
+bool SoftVideoDecoderOMXComponent::colorAspectsDiffer(
+        const ColorAspects &a, const ColorAspects &b) {
+    if (a.mRange != b.mRange
+        || a.mPrimaries != b.mPrimaries
+        || a.mTransfer != b.mTransfer
+        || a.mMatrixCoeffs != b.mMatrixCoeffs) {
+        return true;
+    }
+    return false;
+}
+
+void SoftVideoDecoderOMXComponent::updateFinalColorAspects(
+        const ColorAspects &otherAspects, const ColorAspects &preferredAspects) {
+    Mutex::Autolock autoLock(mColorAspectsLock);
+    ColorAspects newAspects;
+    newAspects.mRange = preferredAspects.mRange != ColorAspects::RangeUnspecified ?
+        preferredAspects.mRange : otherAspects.mRange;
+    newAspects.mPrimaries = preferredAspects.mPrimaries != ColorAspects::PrimariesUnspecified ?
+        preferredAspects.mPrimaries : otherAspects.mPrimaries;
+    newAspects.mTransfer = preferredAspects.mTransfer != ColorAspects::TransferUnspecified ?
+        preferredAspects.mTransfer : otherAspects.mTransfer;
+    newAspects.mMatrixCoeffs = preferredAspects.mMatrixCoeffs != ColorAspects::MatrixUnspecified ?
+        preferredAspects.mMatrixCoeffs : otherAspects.mMatrixCoeffs;
+
+    // Check to see if need update mFinalColorAspects.
+    if (colorAspectsDiffer(mFinalColorAspects, newAspects)) {
+        mFinalColorAspects = newAspects;
+        mUpdateColorAspects = true;
+    }
+}
+
+status_t SoftVideoDecoderOMXComponent::handleColorAspectsChange() {
+    int perference = getColorAspectPreference();
+    ALOGD("Color Aspects preference: %d ", perference);
+
+    if (perference == kPreferBitstream) {
+        updateFinalColorAspects(mDefaultColorAspects, mBitstreamColorAspects);
+    } else if (perference == kPreferContainer) {
+        updateFinalColorAspects(mBitstreamColorAspects, mDefaultColorAspects);
+    } else {
+        return OMX_ErrorUnsupportedSetting;
+    }
+    return OK;
+}
+
 void SoftVideoDecoderOMXComponent::copyYV12FrameToOutputBuffer(
         uint8_t *dst, const uint8_t *srcY, const uint8_t *srcU, const uint8_t *srcV,
         size_t srcYStride, size_t srcUStride, size_t srcVStride) {
@@ -450,7 +524,7 @@
 
 OMX_ERRORTYPE SoftVideoDecoderOMXComponent::getConfig(
         OMX_INDEXTYPE index, OMX_PTR params) {
-    switch (index) {
+    switch ((int)index) {
         case OMX_IndexConfigCommonOutputCrop:
         {
             OMX_CONFIG_RECTTYPE *rectParams = (OMX_CONFIG_RECTTYPE *)params;
@@ -470,22 +544,88 @@
 
             return OMX_ErrorNone;
         }
+        case kDescribeColorAspectsIndex:
+        {
+            if (!supportsDescribeColorAspects()) {
+                return OMX_ErrorUnsupportedIndex;
+            }
+
+            DescribeColorAspectsParams* colorAspectsParams =
+                    (DescribeColorAspectsParams *)params;
+
+            if (colorAspectsParams->nPortIndex != kOutputPortIndex) {
+                return OMX_ErrorBadParameter;
+            }
+
+            colorAspectsParams->sAspects = mFinalColorAspects;
+            if (colorAspectsParams->bRequestingDataSpace || colorAspectsParams->bDataSpaceChanged) {
+                return OMX_ErrorUnsupportedSetting;
+            }
+
+            return OMX_ErrorNone;
+        }
 
         default:
             return OMX_ErrorUnsupportedIndex;
     }
 }
 
+OMX_ERRORTYPE SoftVideoDecoderOMXComponent::setConfig(
+        OMX_INDEXTYPE index, const OMX_PTR params){
+    switch ((int)index) {
+        case kDescribeColorAspectsIndex:
+        {
+            if (!supportsDescribeColorAspects()) {
+                return OMX_ErrorUnsupportedIndex;
+            }
+            const DescribeColorAspectsParams* colorAspectsParams =
+                    (const DescribeColorAspectsParams *)params;
+
+            if (!isValidOMXParam(colorAspectsParams)) {
+                return OMX_ErrorBadParameter;
+            }
+
+            if (colorAspectsParams->nPortIndex != kOutputPortIndex) {
+                return OMX_ErrorBadParameter;
+            }
+
+            // Update color aspects if necessary.
+            if (colorAspectsDiffer(colorAspectsParams->sAspects, mDefaultColorAspects)) {
+                mDefaultColorAspects = colorAspectsParams->sAspects;
+                status_t err = handleColorAspectsChange();
+                CHECK(err == OK);
+            }
+            return OMX_ErrorNone;
+        }
+
+        default:
+            return OMX_ErrorUnsupportedIndex;
+    }
+}
+
+
 OMX_ERRORTYPE SoftVideoDecoderOMXComponent::getExtensionIndex(
         const char *name, OMX_INDEXTYPE *index) {
     if (!strcmp(name, "OMX.google.android.index.prepareForAdaptivePlayback")) {
         *(int32_t*)index = kPrepareForAdaptivePlaybackIndex;
         return OMX_ErrorNone;
+    } else if (!strcmp(name, "OMX.google.android.index.describeColorAspects")
+                && supportsDescribeColorAspects()) {
+        *(int32_t*)index = kDescribeColorAspectsIndex;
+        return OMX_ErrorNone;
     }
 
     return SimpleSoftOMXComponent::getExtensionIndex(name, index);
 }
 
+bool SoftVideoDecoderOMXComponent::supportsDescribeColorAspects() {
+    return getColorAspectPreference() != kNotSupported;
+}
+
+int SoftVideoDecoderOMXComponent::getColorAspectPreference() {
+    return kNotSupported;
+}
+
 void SoftVideoDecoderOMXComponent::onReset() {
     mOutputPortSettingsChange = NONE;
 }
diff --git a/media/libstagefright/rtsp/ASessionDescription.cpp b/media/libstagefright/rtsp/ASessionDescription.cpp
index 98498e9..8b0331a 100644
--- a/media/libstagefright/rtsp/ASessionDescription.cpp
+++ b/media/libstagefright/rtsp/ASessionDescription.cpp
@@ -17,6 +17,7 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "ASessionDescription"
 #include <utils/Log.h>
+#include <cutils/log.h>
 
 #include "ASessionDescription.h"
 
@@ -211,13 +212,15 @@
 
     *PT = x;
 
-    char key[20];
-    sprintf(key, "a=rtpmap:%lu", x);
-
-    CHECK(findAttribute(index, key, desc));
-
-    sprintf(key, "a=fmtp:%lu", x);
-    if (!findAttribute(index, key, params)) {
+    char key[32];
+    snprintf(key, sizeof(key), "a=rtpmap:%lu", x);
+    if (findAttribute(index, key, desc)) {
+        snprintf(key, sizeof(key), "a=fmtp:%lu", x);
+        if (!findAttribute(index, key, params)) {
+            params->clear();
+        }
+    } else {
+        desc->clear();
         params->clear();
     }
 }
@@ -228,8 +231,11 @@
     *width = 0;
     *height = 0;
 
-    char key[20];
-    sprintf(key, "a=framesize:%lu", PT);
+    char key[33];
+    snprintf(key, sizeof(key), "a=framesize:%lu", PT);
+    if (PT > 9999999) {
+        android_errorWriteLog(0x534e4554, "25747670");
+    }
     AString value;
     if (!findAttribute(index, key, &value)) {
         return false;
diff --git a/media/libstagefright/rtsp/MyHandler.h b/media/libstagefright/rtsp/MyHandler.h
index f9a9ab9..76e2e6e 100644
--- a/media/libstagefright/rtsp/MyHandler.h
+++ b/media/libstagefright/rtsp/MyHandler.h
@@ -1042,49 +1042,13 @@
                     return;
                 }
 
-                sp<ABuffer> accessUnit;
-                CHECK(msg->findBuffer("access-unit", &accessUnit));
-
-                uint32_t seqNum = (uint32_t)accessUnit->int32Data();
-
                 if (mSeekPending) {
                     ALOGV("we're seeking, dropping stale packet.");
                     break;
                 }
 
-                if (track->mNewSegment) {
-                    // The sequence number from RTP packet has only 16 bits and is extended
-                    // by ARTPSource. Only the low 16 bits of seq in RTP-Info of reply of
-                    // RTSP "PLAY" command should be used to detect the first RTP packet
-                    // after seeking.
-                    if (track->mAllowedStaleAccessUnits > 0) {
-                        if ((((seqNum ^ track->mFirstSeqNumInSegment) & 0xffff) != 0)) {
-                            // Not the first rtp packet of the stream after seeking, discarding.
-                            track->mAllowedStaleAccessUnits--;
-                            ALOGV("discarding stale access unit (0x%x : 0x%x)",
-                                 seqNum, track->mFirstSeqNumInSegment);
-                            break;
-                        }
-                    } else { // track->mAllowedStaleAccessUnits <= 0
-                        mNumAccessUnitsReceived = 0;
-                        ALOGW_IF(track->mAllowedStaleAccessUnits == 0,
-                             "Still no first rtp packet after %d stale ones",
-                             kMaxAllowedStaleAccessUnits);
-                        track->mAllowedStaleAccessUnits = -1;
-                        break;
-                    }
-
-                    // Now found the first rtp packet of the stream after seeking.
-                    track->mFirstSeqNumInSegment = seqNum;
-                    track->mNewSegment = false;
-                }
-
-                if (seqNum < track->mFirstSeqNumInSegment) {
-                    ALOGV("dropping stale access-unit (%d < %d)",
-                         seqNum, track->mFirstSeqNumInSegment);
-                    break;
-                }
-
+                sp<ABuffer> accessUnit;
+                CHECK(msg->findBuffer("access-unit", &accessUnit));
                 onAccessUnitComplete(trackIndex, accessUnit);
                 break;
             }
@@ -1444,6 +1408,11 @@
         msg->post((mKeepAliveTimeoutUs * 9) / 10);
     }
 
+    void cancelAccessUnitTimeoutCheck() {
+        ALOGV("cancelAccessUnitTimeoutCheck");
+        ++mCheckGeneration;
+    }
+
     void postAccessUnitTimeoutCheck() {
         if (mCheckPending) {
             return;
@@ -1828,14 +1797,8 @@
 
             // Time is now established, lets start timestamping immediately
             for (size_t i = 0; i < mTracks.size(); ++i) {
-                TrackInfo *trackInfo = &mTracks.editItemAt(i);
-                while (!trackInfo->mPackets.empty()) {
-                    sp<ABuffer> accessUnit = *trackInfo->mPackets.begin();
-                    trackInfo->mPackets.erase(trackInfo->mPackets.begin());
-
-                    if (addMediaTimestamp(i, trackInfo, accessUnit)) {
-                        postQueueAccessUnit(i, accessUnit);
-                    }
+                if (OK != processAccessUnitQueue(i)) {
+                    return;
                 }
             }
             for (size_t i = 0; i < mTracks.size(); ++i) {
@@ -1848,38 +1811,83 @@
         }
     }
 
-    void onAccessUnitComplete(
-            int32_t trackIndex, const sp<ABuffer> &accessUnit) {
-        ALOGV("onAccessUnitComplete track %d", trackIndex);
-
-        if(!mPlayResponseParsed){
-            ALOGI("play response is not parsed, storing accessunit");
-            TrackInfo *track = &mTracks.editItemAt(trackIndex);
-            track->mPackets.push_back(accessUnit);
-            return;
-        }
-
-        handleFirstAccessUnit();
-
+    status_t processAccessUnitQueue(int32_t trackIndex) {
         TrackInfo *track = &mTracks.editItemAt(trackIndex);
-
-        if (!mAllTracksHaveTime) {
-            ALOGV("storing accessUnit, no time established yet");
-            track->mPackets.push_back(accessUnit);
-            return;
-        }
-
         while (!track->mPackets.empty()) {
             sp<ABuffer> accessUnit = *track->mPackets.begin();
             track->mPackets.erase(track->mPackets.begin());
 
+            uint32_t seqNum = (uint32_t)accessUnit->int32Data();
+            if (track->mNewSegment) {
+                // The sequence number from RTP packet has only 16 bits and is extended
+                // by ARTPSource. Only the low 16 bits of seq in RTP-Info of reply of
+                // RTSP "PLAY" command should be used to detect the first RTP packet
+                // after seeking.
+                if (mSeekable) {
+                    if (track->mAllowedStaleAccessUnits > 0) {
+                        uint32_t seqNum16 = seqNum & 0xffff;
+                        uint32_t firstSeqNumInSegment16 = track->mFirstSeqNumInSegment & 0xffff;
+                        if (seqNum16 > firstSeqNumInSegment16 + kMaxAllowedStaleAccessUnits
+                                || seqNum16 < firstSeqNumInSegment16) {
+                            // Not the first rtp packet of the stream after seeking, discarding.
+                            track->mAllowedStaleAccessUnits--;
+                            ALOGV("discarding stale access unit (0x%x : 0x%x)",
+                                 seqNum, track->mFirstSeqNumInSegment);
+                            continue;
+                        }
+                        ALOGW_IF(seqNum16 != firstSeqNumInSegment16,
+                                "Missing the first packet(%u), now take packet(%u) as first one",
+                                track->mFirstSeqNumInSegment, seqNum);
+                    } else { // track->mAllowedStaleAccessUnits <= 0
+                        mNumAccessUnitsReceived = 0;
+                        ALOGW_IF(track->mAllowedStaleAccessUnits == 0,
+                             "Still no first rtp packet after %d stale ones",
+                             kMaxAllowedStaleAccessUnits);
+                        track->mAllowedStaleAccessUnits = -1;
+                        return UNKNOWN_ERROR;
+                    }
+                }
+
+                // Now found the first rtp packet of the stream after seeking.
+                track->mFirstSeqNumInSegment = seqNum;
+                track->mNewSegment = false;
+            }
+
+            if (seqNum < track->mFirstSeqNumInSegment) {
+                ALOGV("dropping stale access-unit (%d < %d)",
+                     seqNum, track->mFirstSeqNumInSegment);
+                continue;
+            }
+
             if (addMediaTimestamp(trackIndex, track, accessUnit)) {
                 postQueueAccessUnit(trackIndex, accessUnit);
             }
         }
+        return OK;
+    }
 
-        if (addMediaTimestamp(trackIndex, track, accessUnit)) {
-            postQueueAccessUnit(trackIndex, accessUnit);
+    void onAccessUnitComplete(
+            int32_t trackIndex, const sp<ABuffer> &accessUnit) {
+        TrackInfo *track = &mTracks.editItemAt(trackIndex);
+        track->mPackets.push_back(accessUnit);
+
+        uint32_t seqNum = (uint32_t)accessUnit->int32Data();
+        ALOGV("onAccessUnitComplete track %d storing accessunit %u", trackIndex, seqNum);
+
+        if(!mPlayResponseParsed){
+            ALOGV("play response is not parsed");
+            return;
+        }
+
+        handleFirstAccessUnit();
+
+        if (!mAllTracksHaveTime) {
+            ALOGV("storing accessUnit, no time established yet");
+            return;
+        }
+
+        if (OK != processAccessUnitQueue(trackIndex)) {
+            return;
         }
 
         if (track->mEOSReceived) {
diff --git a/media/libstagefright/wifi-display/rtp/RTPSender.cpp b/media/libstagefright/wifi-display/rtp/RTPSender.cpp
index c66a898..83af393 100644
--- a/media/libstagefright/wifi-display/rtp/RTPSender.cpp
+++ b/media/libstagefright/wifi-display/rtp/RTPSender.cpp
@@ -762,10 +762,16 @@
     return OK;
 }
 
-status_t RTPSender::parseAPP(const uint8_t *data, size_t size __unused) {
-    if (!memcmp("late", &data[8], 4)) {
-        int64_t avgLatencyUs = (int64_t)U64_AT(&data[12]);
-        int64_t maxLatencyUs = (int64_t)U64_AT(&data[20]);
+status_t RTPSender::parseAPP(const uint8_t *data, size_t size) {
+    static const size_t late_offset = 8;
+    static const char late_string[] = "late";
+    static const size_t avgLatencyUs_offset = late_offset + sizeof(late_string) - 1;
+    static const size_t maxLatencyUs_offset = avgLatencyUs_offset + sizeof(int64_t);
+
+    if ((size >= (maxLatencyUs_offset + sizeof(int64_t)))
+            && !memcmp(late_string, &data[late_offset], sizeof(late_string) - 1)) {
+        int64_t avgLatencyUs = (int64_t)U64_AT(&data[avgLatencyUs_offset]);
+        int64_t maxLatencyUs = (int64_t)U64_AT(&data[maxLatencyUs_offset]);
 
         sp<AMessage> notify = mNotify->dup();
         notify->setInt32("what", kWhatInformSender);
diff --git a/media/mediaserver/mediaserver.rc b/media/mediaserver/mediaserver.rc
index b777d5c..f6c325c 100644
--- a/media/mediaserver/mediaserver.rc
+++ b/media/mediaserver/mediaserver.rc
@@ -3,4 +3,4 @@
     user media
     group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm
     ioprio rt 4
-    writepid /dev/cpuset/foreground/tasks
+    writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks
diff --git a/media/mtp/Android.mk b/media/mtp/Android.mk
index cb7e4aa..58753ff 100644
--- a/media/mtp/Android.mk
+++ b/media/mtp/Android.mk
@@ -19,26 +19,31 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:=                                       \
+                  AsyncIO.cpp                           \
                   MtpDataPacket.cpp                     \
                   MtpDebug.cpp                          \
+                  MtpDevHandle.cpp                      \
                   MtpDevice.cpp                         \
-                  MtpEventPacket.cpp                    \
                   MtpDeviceInfo.cpp                     \
+                  MtpEventPacket.cpp                    \
+                  MtpFfsHandle.cpp                      \
                   MtpObjectInfo.cpp                     \
                   MtpPacket.cpp                         \
                   MtpProperty.cpp                       \
                   MtpRequestPacket.cpp                  \
                   MtpResponsePacket.cpp                 \
                   MtpServer.cpp                         \
+                  MtpStorage.cpp                        \
                   MtpStorageInfo.cpp                    \
                   MtpStringBuffer.cpp                   \
-                  MtpStorage.cpp                        \
                   MtpUtils.cpp                          \
 
 LOCAL_MODULE:= libmtp
 
 LOCAL_CFLAGS := -DMTP_DEVICE -DMTP_HOST -Wall -Wextra -Werror
 
-LOCAL_SHARED_LIBRARIES := libutils libcutils liblog libusbhost libbinder
+LOCAL_SHARED_LIBRARIES := libbase libutils libcutils liblog libusbhost libbinder
 
 include $(BUILD_SHARED_LIBRARY)
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/media/mtp/AsyncIO.cpp b/media/mtp/AsyncIO.cpp
new file mode 100644
index 0000000..e77ad38
--- /dev/null
+++ b/media/mtp/AsyncIO.cpp
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <condition_variable>
+#include <memory>
+#include <mutex>
+#include <queue>
+
+#include "AsyncIO.h"
+
+namespace {
+
+void read_func(struct aiocb *aiocbp) {
+    aiocbp->ret = TEMP_FAILURE_RETRY(pread(aiocbp->aio_fildes,
+                aiocbp->aio_buf, aiocbp->aio_nbytes, aiocbp->aio_offset));
+    if (aiocbp->ret == -1) aiocbp->error = errno;
+}
+
+void write_func(struct aiocb *aiocbp) {
+    aiocbp->ret = TEMP_FAILURE_RETRY(pwrite(aiocbp->aio_fildes,
+                aiocbp->aio_buf, aiocbp->aio_nbytes, aiocbp->aio_offset));
+    if (aiocbp->ret == -1) aiocbp->error = errno;
+}
+
+void splice_read_func(struct aiocb *aiocbp) {
+    loff_t long_offset = aiocbp->aio_offset;
+    aiocbp->ret = TEMP_FAILURE_RETRY(splice(aiocbp->aio_fildes,
+                &long_offset, aiocbp->aio_sink,
+                NULL, aiocbp->aio_nbytes, 0));
+    if (aiocbp->ret == -1) aiocbp->error = errno;
+}
+
+void splice_write_func(struct aiocb *aiocbp) {
+    loff_t long_offset = aiocbp->aio_offset;
+    aiocbp->ret = TEMP_FAILURE_RETRY(splice(aiocbp->aio_fildes, NULL,
+                aiocbp->aio_sink, &long_offset,
+                aiocbp->aio_nbytes, 0));
+    if (aiocbp->ret == -1) aiocbp->error = errno;
+}
+
+std::queue<std::unique_ptr<struct aiocb>> queue;
+std::mutex queue_lock;
+std::condition_variable queue_cond;
+std::condition_variable write_cond;
+int done = 1;
+void splice_write_pool_func(int) {
+    while(1) {
+        std::unique_lock<std::mutex> lk(queue_lock);
+        queue_cond.wait(lk, []{return !queue.empty() || done;});
+        if (queue.empty() && done) {
+            return;
+        }
+        std::unique_ptr<struct aiocb> aiocbp = std::move(queue.front());
+        queue.pop();
+        lk.unlock();
+        write_cond.notify_one();
+        splice_write_func(aiocbp.get());
+        close(aiocbp->aio_fildes);
+    }
+}
+
+void write_pool_func(int) {
+    while(1) {
+        std::unique_lock<std::mutex> lk(queue_lock);
+        queue_cond.wait(lk, []{return !queue.empty() || done;});
+        if (queue.empty() && done) {
+            return;
+        }
+        std::unique_ptr<struct aiocb> aiocbp = std::move(queue.front());
+        queue.pop();
+        lk.unlock();
+        write_cond.notify_one();
+        aiocbp->ret = TEMP_FAILURE_RETRY(pwrite(aiocbp->aio_fildes,
+                    aiocbp->aio_pool_buf.get(), aiocbp->aio_nbytes, aiocbp->aio_offset));
+        if (aiocbp->ret == -1) aiocbp->error = errno;
+    }
+}
+
+constexpr int NUM_THREADS = 1;
+constexpr int MAX_QUEUE_SIZE = 10;
+std::thread pool[NUM_THREADS];
+
+} // end anonymous namespace
+
+void aio_pool_init(void(f)(int)) {
+    CHECK(done == 1);
+    done = 0;
+    for (int i = 0; i < NUM_THREADS; i++) {
+        pool[i] = std::thread(f, i);
+    }
+}
+
+void aio_pool_splice_init() {
+    aio_pool_init(splice_write_pool_func);
+}
+
+void aio_pool_write_init() {
+    aio_pool_init(write_pool_func);
+}
+
+void aio_pool_end() {
+    done = 1;
+    for (int i = 0; i < NUM_THREADS; i++) {
+        std::unique_lock<std::mutex> lk(queue_lock);
+        lk.unlock();
+        queue_cond.notify_one();
+    }
+
+    for (int i = 0; i < NUM_THREADS; i++) {
+        pool[i].join();
+    }
+}
+
+// used for both writes and splices depending on which init was used before.
+int aio_pool_write(struct aiocb *aiocbp) {
+    std::unique_lock<std::mutex> lk(queue_lock);
+    write_cond.wait(lk, []{return queue.size() < MAX_QUEUE_SIZE;});
+    queue.push(std::unique_ptr<struct aiocb>(aiocbp));
+    lk.unlock();
+    queue_cond.notify_one();
+    return 0;
+}
+
+int aio_read(struct aiocb *aiocbp) {
+    aiocbp->thread = std::thread(read_func, aiocbp);
+    return 0;
+}
+
+int aio_write(struct aiocb *aiocbp) {
+    aiocbp->thread = std::thread(write_func, aiocbp);
+    return 0;
+}
+
+int aio_splice_read(struct aiocb *aiocbp) {
+    aiocbp->thread = std::thread(splice_read_func, aiocbp);
+    return 0;
+}
+
+int aio_splice_write(struct aiocb *aiocbp) {
+    aiocbp->thread = std::thread(splice_write_func, aiocbp);
+    return 0;
+}
+
+int aio_error(const struct aiocb *aiocbp) {
+    return aiocbp->error;
+}
+
+ssize_t aio_return(struct aiocb *aiocbp) {
+    return aiocbp->ret;
+}
+
+int aio_suspend(struct aiocb *aiocbp[], int n,
+        const struct timespec *) {
+    for (int i = 0; i < n; i++) {
+        aiocbp[i]->thread.join();
+    }
+    return 0;
+}
+
+int aio_cancel(int, struct aiocb *) {
+    // Not implemented
+    return -1;
+}
+
diff --git a/media/mtp/AsyncIO.h b/media/mtp/AsyncIO.h
new file mode 100644
index 0000000..f7515a2
--- /dev/null
+++ b/media/mtp/AsyncIO.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _ASYNCIO_H
+#define _ASYNCIO_H
+
+#include <fcntl.h>
+#include <linux/aio_abi.h>
+#include <memory>
+#include <signal.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <time.h>
+#include <thread>
+#include <unistd.h>
+
+/**
+ * Provides a subset of POSIX aio operations, as well
+ * as similar operations with splice and threadpools.
+ */
+
+struct aiocb {
+    int aio_fildes;     // Assumed to be the source for splices
+    void *aio_buf;      // Unused for splices
+
+    // Used for threadpool operations only, freed automatically
+    std::unique_ptr<char[]> aio_pool_buf;
+
+    off_t aio_offset;
+    size_t aio_nbytes;
+
+    int aio_sink;       // Unused for non splice r/w
+
+    // Used internally
+    std::thread thread;
+    ssize_t ret;
+    int error;
+};
+
+// Submit a request for IO to be completed
+int aio_read(struct aiocb *);
+int aio_write(struct aiocb *);
+int aio_splice_read(struct aiocb *);
+int aio_splice_write(struct aiocb *);
+
+// Suspend current thread until given IO is complete, at which point
+// its return value and any errors can be accessed
+int aio_suspend(struct aiocb *[], int, const struct timespec *);
+int aio_error(const struct aiocb *);
+ssize_t aio_return(struct aiocb *);
+int aio_cancel(int, struct aiocb *);
+
+// Initialize a threadpool to perform IO. Only one pool can be
+// running at a time.
+void aio_pool_write_init();
+void aio_pool_splice_init();
+// Suspend current thread until all queued work is complete, then ends the threadpool
+void aio_pool_end();
+// Submit IO work for the threadpool to complete. Memory associated with the work is
+// freed automatically when the work is complete.
+int aio_pool_write(struct aiocb *);
+
+#endif // ASYNCIO_H
+
diff --git a/media/mtp/IMtpHandle.h b/media/mtp/IMtpHandle.h
new file mode 100644
index 0000000..9185255
--- /dev/null
+++ b/media/mtp/IMtpHandle.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef _IMTP_HANDLE_H
+#define _IMTP_HANDLE_H
+
+#include <linux/usb/f_mtp.h>
+
+constexpr char FFS_MTP_EP0[] = "/dev/usb-ffs/mtp/ep0";
+
+class IMtpHandle {
+public:
+    // Return number of bytes read/written, or -1 and errno is set
+    virtual int read(void *data, int len) = 0;
+    virtual int write(const void *data, int len) = 0;
+
+    // Return 0 if send/receive is successful, or -1 and errno is set
+    virtual int receiveFile(mtp_file_range mfr) = 0;
+    virtual int sendFile(mtp_file_range mfr) = 0;
+    virtual int sendEvent(mtp_event me) = 0;
+
+    // Return 0 if operation is successful, or -1 else
+    virtual int start() = 0;
+    virtual int configure(bool ptp) = 0;
+
+    virtual void close() = 0;
+
+    virtual ~IMtpHandle() {}
+};
+
+IMtpHandle *get_ffs_handle();
+IMtpHandle *get_mtp_handle();
+
+#endif // _IMTP_HANDLE_H
+
diff --git a/media/mtp/MtpDataPacket.cpp b/media/mtp/MtpDataPacket.cpp
index 0381edf..0ddee86 100644
--- a/media/mtp/MtpDataPacket.cpp
+++ b/media/mtp/MtpDataPacket.cpp
@@ -24,6 +24,7 @@
 
 #include "MtpDataPacket.h"
 #include "MtpStringBuffer.h"
+#include "IMtpHandle.h"
 
 namespace android {
 
@@ -417,9 +418,9 @@
         putUInt16(0);
 }
 
-#ifdef MTP_DEVICE 
-int MtpDataPacket::read(int fd) {
-    int ret = ::read(fd, mBuffer, MTP_BUFFER_SIZE);
+#ifdef MTP_DEVICE
+int MtpDataPacket::read(IMtpHandle *h) {
+    int ret = h->read(mBuffer, MTP_BUFFER_SIZE);
     if (ret < MTP_CONTAINER_HEADER_SIZE)
         return -1;
     mPacketSize = ret;
@@ -427,20 +428,20 @@
     return ret;
 }
 
-int MtpDataPacket::write(int fd) {
+int MtpDataPacket::write(IMtpHandle *h) {
     MtpPacket::putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
     MtpPacket::putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_DATA);
-    int ret = ::write(fd, mBuffer, mPacketSize);
+    int ret = h->write(mBuffer, mPacketSize);
     return (ret < 0 ? ret : 0);
 }
 
-int MtpDataPacket::writeData(int fd, void* data, uint32_t length) {
+int MtpDataPacket::writeData(IMtpHandle *h, void* data, uint32_t length) {
     allocate(length + MTP_CONTAINER_HEADER_SIZE);
     memcpy(mBuffer + MTP_CONTAINER_HEADER_SIZE, data, length);
     length += MTP_CONTAINER_HEADER_SIZE;
     MtpPacket::putUInt32(MTP_CONTAINER_LENGTH_OFFSET, length);
     MtpPacket::putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_DATA);
-    int ret = ::write(fd, mBuffer, length);
+    int ret = h->write(mBuffer, length);
     return (ret < 0 ? ret : 0);
 }
 
diff --git a/media/mtp/MtpDataPacket.h b/media/mtp/MtpDataPacket.h
index 6240f28..3a6b6cb 100644
--- a/media/mtp/MtpDataPacket.h
+++ b/media/mtp/MtpDataPacket.h
@@ -20,6 +20,7 @@
 #include "MtpPacket.h"
 #include "mtp.h"
 
+class IMtpHandle;
 struct usb_device;
 struct usb_request;
 
@@ -95,12 +96,12 @@
 
 
 #ifdef MTP_DEVICE
-    // fill our buffer with data from the given file descriptor
-    int                 read(int fd);
+    // fill our buffer with data from the given usb handle
+    int                 read(IMtpHandle *h);
 
-    // write our data to the given file descriptor
-    int                 write(int fd);
-    int                 writeData(int fd, void* data, uint32_t length);
+    // write our data to the given usb handle
+    int                 write(IMtpHandle *h);
+    int                 writeData(IMtpHandle *h, void* data, uint32_t length);
 #endif
 
 #ifdef MTP_HOST
diff --git a/media/mtp/MtpDevHandle.cpp b/media/mtp/MtpDevHandle.cpp
new file mode 100644
index 0000000..afc0525
--- /dev/null
+++ b/media/mtp/MtpDevHandle.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or         implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utils/Log.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <cutils/properties.h>
+#include <dirent.h>
+#include <errno.h>
+#include <linux/usb/ch9.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/endian.h>
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+#include "IMtpHandle.h"
+
+constexpr char mtp_dev_path[] = "/dev/mtp_usb";
+
+class MtpDevHandle : public IMtpHandle {
+private:
+    android::base::unique_fd mFd;
+
+public:
+    MtpDevHandle();
+    ~MtpDevHandle();
+    int read(void *data, int len);
+    int write(const void *data, int len);
+
+    int receiveFile(mtp_file_range mfr);
+    int sendFile(mtp_file_range mfr);
+    int sendEvent(mtp_event me);
+
+    int start();
+    void close();
+
+    int configure(bool ptp);
+};
+
+MtpDevHandle::MtpDevHandle()
+    : mFd(-1) {};
+
+MtpDevHandle::~MtpDevHandle() {}
+
+int MtpDevHandle::read(void *data, int len) {
+    return ::read(mFd, data, len);
+}
+
+int MtpDevHandle::write(const void *data, int len) {
+    return ::write(mFd, data, len);
+}
+
+int MtpDevHandle::receiveFile(mtp_file_range mfr) {
+    return ioctl(mFd, MTP_RECEIVE_FILE, reinterpret_cast<unsigned long>(&mfr));
+}
+
+int MtpDevHandle::sendFile(mtp_file_range mfr) {
+    return ioctl(mFd, MTP_SEND_FILE_WITH_HEADER, reinterpret_cast<unsigned long>(&mfr));
+}
+
+int MtpDevHandle::sendEvent(mtp_event me) {
+    return ioctl(mFd, MTP_SEND_EVENT, reinterpret_cast<unsigned long>(&me));
+}
+
+int MtpDevHandle::start() {
+    mFd = android::base::unique_fd(TEMP_FAILURE_RETRY(open(mtp_dev_path, O_RDWR)));
+    if (mFd == -1) return -1;
+    return 0;
+}
+
+void MtpDevHandle::close() {
+    mFd.reset();
+}
+
+int MtpDevHandle::configure(bool) {
+    // Nothing to do, driver can configure itself
+    return 0;
+}
+
+IMtpHandle *get_mtp_handle() {
+    return new MtpDevHandle();
+}
diff --git a/media/mtp/MtpEventPacket.cpp b/media/mtp/MtpEventPacket.cpp
index 8e13ea9..fbee72f 100644
--- a/media/mtp/MtpEventPacket.cpp
+++ b/media/mtp/MtpEventPacket.cpp
@@ -19,12 +19,8 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <fcntl.h>
-#include <sys/ioctl.h>
 
-#ifdef MTP_DEVICE
-#include <linux/usb/f_mtp.h>
-#endif
-
+#include "IMtpHandle.h"
 #include "MtpEventPacket.h"
 
 #include <usbhost/usbhost.h>
@@ -40,7 +36,7 @@
 }
 
 #ifdef MTP_DEVICE
-int MtpEventPacket::write(int fd) {
+int MtpEventPacket::write(IMtpHandle *h) {
     struct mtp_event    event;
 
     putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
@@ -48,7 +44,7 @@
 
     event.data = mBuffer;
     event.length = mPacketSize;
-    int ret = ::ioctl(fd, MTP_SEND_EVENT, (unsigned long)&event);
+    int ret = h->sendEvent(event);
     return (ret < 0 ? ret : 0);
 }
 #endif
diff --git a/media/mtp/MtpEventPacket.h b/media/mtp/MtpEventPacket.h
index a8779fd..3f3b6a3 100644
--- a/media/mtp/MtpEventPacket.h
+++ b/media/mtp/MtpEventPacket.h
@@ -20,6 +20,8 @@
 #include "MtpPacket.h"
 #include "mtp.h"
 
+class IMtpHandle;
+
 namespace android {
 
 class MtpEventPacket : public MtpPacket {
@@ -29,8 +31,8 @@
     virtual             ~MtpEventPacket();
 
 #ifdef MTP_DEVICE
-    // write our data to the given file descriptor
-    int                 write(int fd);
+    // write our data to the given usb handle
+    int                 write(IMtpHandle *h);
 #endif
 
 #ifdef MTP_HOST
diff --git a/media/mtp/MtpFfsHandle.cpp b/media/mtp/MtpFfsHandle.cpp
new file mode 100644
index 0000000..58d2bb8
--- /dev/null
+++ b/media/mtp/MtpFfsHandle.cpp
@@ -0,0 +1,704 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/functionfs.h>
+#include <mutex>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/endian.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <vector>
+
+#include "AsyncIO.h"
+#include "MtpFfsHandle.h"
+#include "mtp.h"
+
+#define cpu_to_le16(x)  htole16(x)
+#define cpu_to_le32(x)  htole32(x)
+
+#define FUNCTIONFS_ENDPOINT_ALLOC       _IOR('g', 231, __u32)
+
+namespace {
+
+constexpr char FFS_MTP_EP_IN[] = "/dev/usb-ffs/mtp/ep1";
+constexpr char FFS_MTP_EP_OUT[] = "/dev/usb-ffs/mtp/ep2";
+constexpr char FFS_MTP_EP_INTR[] = "/dev/usb-ffs/mtp/ep3";
+
+constexpr int MAX_PACKET_SIZE_FS = 64;
+constexpr int MAX_PACKET_SIZE_HS = 512;
+constexpr int MAX_PACKET_SIZE_SS = 1024;
+
+// Must be divisible by all max packet size values
+constexpr int MAX_FILE_CHUNK_SIZE = 3145728;
+
+// Safe values since some devices cannot handle large DMAs
+// To get good performance, override these with
+// higher values per device using the properties
+// sys.usb.ffs.max_read and sys.usb.ffs.max_write
+constexpr int USB_FFS_MAX_WRITE = MTP_BUFFER_SIZE;
+constexpr int USB_FFS_MAX_READ = MTP_BUFFER_SIZE;
+
+static_assert(USB_FFS_MAX_WRITE > 0, "Max r/w values must be > 0!");
+static_assert(USB_FFS_MAX_READ > 0, "Max r/w values must be > 0!");
+
+constexpr unsigned int MAX_MTP_FILE_SIZE = 0xFFFFFFFF;
+
+constexpr size_t ENDPOINT_ALLOC_RETRIES = 10;
+
+struct func_desc {
+    struct usb_interface_descriptor intf;
+    struct usb_endpoint_descriptor_no_audio sink;
+    struct usb_endpoint_descriptor_no_audio source;
+    struct usb_endpoint_descriptor_no_audio intr;
+} __attribute__((packed));
+
+struct ss_func_desc {
+    struct usb_interface_descriptor intf;
+    struct usb_endpoint_descriptor_no_audio sink;
+    struct usb_ss_ep_comp_descriptor sink_comp;
+    struct usb_endpoint_descriptor_no_audio source;
+    struct usb_ss_ep_comp_descriptor source_comp;
+    struct usb_endpoint_descriptor_no_audio intr;
+    struct usb_ss_ep_comp_descriptor intr_comp;
+} __attribute__((packed));
+
+struct desc_v1 {
+    struct usb_functionfs_descs_head_v1 {
+        __le32 magic;
+        __le32 length;
+        __le32 fs_count;
+        __le32 hs_count;
+    } __attribute__((packed)) header;
+    struct func_desc fs_descs, hs_descs;
+} __attribute__((packed));
+
+struct desc_v2 {
+    struct usb_functionfs_descs_head_v2 header;
+    // The rest of the structure depends on the flags in the header.
+    __le32 fs_count;
+    __le32 hs_count;
+    __le32 ss_count;
+    struct func_desc fs_descs, hs_descs;
+    struct ss_func_desc ss_descs;
+} __attribute__((packed));
+
+const struct usb_interface_descriptor mtp_interface_desc = {
+    .bLength = USB_DT_INTERFACE_SIZE,
+    .bDescriptorType = USB_DT_INTERFACE,
+    .bInterfaceNumber = 0,
+    .bNumEndpoints = 3,
+    .bInterfaceClass = USB_CLASS_STILL_IMAGE,
+    .bInterfaceSubClass = 1,
+    .bInterfaceProtocol = 1,
+    .iInterface = 1,
+};
+
+const struct usb_interface_descriptor ptp_interface_desc = {
+    .bLength = USB_DT_INTERFACE_SIZE,
+    .bDescriptorType = USB_DT_INTERFACE,
+    .bInterfaceNumber = 0,
+    .bNumEndpoints = 3,
+    .bInterfaceClass = USB_CLASS_STILL_IMAGE,
+    .bInterfaceSubClass = 1,
+    .bInterfaceProtocol = 1,
+};
+
+const struct usb_endpoint_descriptor_no_audio fs_sink = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 1 | USB_DIR_IN,
+    .bmAttributes = USB_ENDPOINT_XFER_BULK,
+    .wMaxPacketSize = MAX_PACKET_SIZE_FS,
+};
+
+const struct usb_endpoint_descriptor_no_audio fs_source = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 2 | USB_DIR_OUT,
+    .bmAttributes = USB_ENDPOINT_XFER_BULK,
+    .wMaxPacketSize = MAX_PACKET_SIZE_FS,
+};
+
+const struct usb_endpoint_descriptor_no_audio fs_intr = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 3 | USB_DIR_IN,
+    .bmAttributes = USB_ENDPOINT_XFER_INT,
+    .wMaxPacketSize = MAX_PACKET_SIZE_FS,
+    .bInterval = 6,
+};
+
+const struct usb_endpoint_descriptor_no_audio hs_sink = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 1 | USB_DIR_IN,
+    .bmAttributes = USB_ENDPOINT_XFER_BULK,
+    .wMaxPacketSize = MAX_PACKET_SIZE_HS,
+};
+
+const struct usb_endpoint_descriptor_no_audio hs_source = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 2 | USB_DIR_OUT,
+    .bmAttributes = USB_ENDPOINT_XFER_BULK,
+    .wMaxPacketSize = MAX_PACKET_SIZE_HS,
+};
+
+const struct usb_endpoint_descriptor_no_audio hs_intr = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 3 | USB_DIR_IN,
+    .bmAttributes = USB_ENDPOINT_XFER_INT,
+    .wMaxPacketSize = MAX_PACKET_SIZE_HS,
+    .bInterval = 6,
+};
+
+const struct usb_endpoint_descriptor_no_audio ss_sink = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 1 | USB_DIR_IN,
+    .bmAttributes = USB_ENDPOINT_XFER_BULK,
+    .wMaxPacketSize = MAX_PACKET_SIZE_SS,
+};
+
+const struct usb_endpoint_descriptor_no_audio ss_source = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 2 | USB_DIR_OUT,
+    .bmAttributes = USB_ENDPOINT_XFER_BULK,
+    .wMaxPacketSize = MAX_PACKET_SIZE_SS,
+};
+
+const struct usb_endpoint_descriptor_no_audio ss_intr = {
+    .bLength = USB_DT_ENDPOINT_SIZE,
+    .bDescriptorType = USB_DT_ENDPOINT,
+    .bEndpointAddress = 3 | USB_DIR_IN,
+    .bmAttributes = USB_ENDPOINT_XFER_INT,
+    .wMaxPacketSize = MAX_PACKET_SIZE_SS,
+    .bInterval = 6,
+};
+
+const struct usb_ss_ep_comp_descriptor ss_sink_comp = {
+    .bLength = sizeof(ss_sink_comp),
+    .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+    .bMaxBurst = 2,
+};
+
+const struct usb_ss_ep_comp_descriptor ss_source_comp = {
+    .bLength = sizeof(ss_source_comp),
+    .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+    .bMaxBurst = 2,
+};
+
+const struct usb_ss_ep_comp_descriptor ss_intr_comp = {
+    .bLength = sizeof(ss_intr_comp),
+    .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+};
+
+const struct func_desc mtp_fs_descriptors = {
+    .intf = mtp_interface_desc,
+    .sink = fs_sink,
+    .source = fs_source,
+    .intr = fs_intr,
+};
+
+const struct func_desc mtp_hs_descriptors = {
+    .intf = mtp_interface_desc,
+    .sink = hs_sink,
+    .source = hs_source,
+    .intr = hs_intr,
+};
+
+const struct ss_func_desc mtp_ss_descriptors = {
+    .intf = mtp_interface_desc,
+    .sink = ss_sink,
+    .sink_comp = ss_sink_comp,
+    .source = ss_source,
+    .source_comp = ss_source_comp,
+    .intr = ss_intr,
+    .intr_comp = ss_intr_comp,
+};
+
+const struct func_desc ptp_fs_descriptors = {
+    .intf = ptp_interface_desc,
+    .sink = fs_sink,
+    .source = fs_source,
+    .intr = fs_intr,
+};
+
+const struct func_desc ptp_hs_descriptors = {
+    .intf = ptp_interface_desc,
+    .sink = hs_sink,
+    .source = hs_source,
+    .intr = hs_intr,
+};
+
+const struct ss_func_desc ptp_ss_descriptors = {
+    .intf = ptp_interface_desc,
+    .sink = ss_sink,
+    .sink_comp = ss_sink_comp,
+    .source = ss_source,
+    .source_comp = ss_source_comp,
+    .intr = ss_intr,
+    .intr_comp = ss_intr_comp,
+};
+
+#define STR_INTERFACE "MTP"
+const struct {
+    struct usb_functionfs_strings_head header;
+    struct {
+        __le16 code;
+        const char str1[sizeof(STR_INTERFACE)];
+    } __attribute__((packed)) lang0;
+} __attribute__((packed)) strings = {
+    .header = {
+        .magic = cpu_to_le32(FUNCTIONFS_STRINGS_MAGIC),
+        .length = cpu_to_le32(sizeof(strings)),
+        .str_count = cpu_to_le32(1),
+        .lang_count = cpu_to_le32(1),
+    },
+    .lang0 = {
+        .code = cpu_to_le16(0x0409),
+        .str1 = STR_INTERFACE,
+    },
+};
+
+} // anonymous namespace
+
+namespace android {
+
+MtpFfsHandle::MtpFfsHandle() :
+    mMaxWrite(USB_FFS_MAX_WRITE),
+    mMaxRead(USB_FFS_MAX_READ) {}
+
+MtpFfsHandle::~MtpFfsHandle() {}
+
+void MtpFfsHandle::closeEndpoints() {
+    mIntr.reset();
+    mBulkIn.reset();
+    mBulkOut.reset();
+}
+
+bool MtpFfsHandle::initFunctionfs() {
+    ssize_t ret;
+    struct desc_v1 v1_descriptor;
+    struct desc_v2 v2_descriptor;
+
+    v2_descriptor.header.magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2);
+    v2_descriptor.header.length = cpu_to_le32(sizeof(v2_descriptor));
+    v2_descriptor.header.flags = FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC |
+                                 FUNCTIONFS_HAS_SS_DESC;
+    v2_descriptor.fs_count = 4;
+    v2_descriptor.hs_count = 4;
+    v2_descriptor.ss_count = 7;
+    v2_descriptor.fs_descs = mPtp ? ptp_fs_descriptors : mtp_fs_descriptors;
+    v2_descriptor.hs_descs = mPtp ? ptp_hs_descriptors : mtp_hs_descriptors;
+    v2_descriptor.ss_descs = mPtp ? ptp_ss_descriptors : mtp_ss_descriptors;
+
+    if (mControl < 0) { // might have already done this before
+        mControl.reset(TEMP_FAILURE_RETRY(open(FFS_MTP_EP0, O_RDWR)));
+        if (mControl < 0) {
+            PLOG(ERROR) << FFS_MTP_EP0 << ": cannot open control endpoint";
+            goto err;
+        }
+
+        ret = TEMP_FAILURE_RETRY(::write(mControl, &v2_descriptor, sizeof(v2_descriptor)));
+        if (ret < 0) {
+            v1_descriptor.header.magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC);
+            v1_descriptor.header.length = cpu_to_le32(sizeof(v1_descriptor));
+            v1_descriptor.header.fs_count = 4;
+            v1_descriptor.header.hs_count = 4;
+            v1_descriptor.fs_descs = mPtp ? ptp_fs_descriptors : mtp_fs_descriptors;
+            v1_descriptor.hs_descs = mPtp ? ptp_hs_descriptors : mtp_hs_descriptors;
+            PLOG(ERROR) << FFS_MTP_EP0 << "Switching to V1 descriptor format";
+            ret = TEMP_FAILURE_RETRY(::write(mControl, &v1_descriptor, sizeof(v1_descriptor)));
+            if (ret < 0) {
+                PLOG(ERROR) << FFS_MTP_EP0 << "Writing descriptors failed";
+                goto err;
+            }
+        }
+        ret = TEMP_FAILURE_RETRY(::write(mControl, &strings, sizeof(strings)));
+        if (ret < 0) {
+            PLOG(ERROR) << FFS_MTP_EP0 << "Writing strings failed";
+            goto err;
+        }
+    }
+    if (mBulkIn > -1 || mBulkOut > -1 || mIntr > -1)
+        LOG(WARNING) << "Endpoints were not closed before configure!";
+
+    return true;
+
+err:
+    closeConfig();
+    return false;
+}
+
+void MtpFfsHandle::closeConfig() {
+    mControl.reset();
+}
+
+int MtpFfsHandle::writeHandle(int fd, const void* data, int len) {
+    LOG(VERBOSE) << "MTP about to write fd = " << fd << ", len=" << len;
+    int ret = 0;
+    const char* buf = static_cast<const char*>(data);
+    while (len > 0) {
+        int write_len = std::min(mMaxWrite, len);
+        int n = TEMP_FAILURE_RETRY(::write(fd, buf, write_len));
+
+        if (n < 0) {
+            PLOG(ERROR) << "write ERROR: fd = " << fd << ", n = " << n;
+            return -1;
+        } else if (n < write_len) {
+            errno = EIO;
+            PLOG(ERROR) << "less written than expected";
+            return -1;
+        }
+        buf += n;
+        len -= n;
+        ret += n;
+    }
+    return ret;
+}
+
+int MtpFfsHandle::readHandle(int fd, void* data, int len) {
+    LOG(VERBOSE) << "MTP about to read fd = " << fd << ", len=" << len;
+    int ret = 0;
+    char* buf = static_cast<char*>(data);
+    while (len > 0) {
+        int read_len = std::min(mMaxRead, len);
+        int n = TEMP_FAILURE_RETRY(::read(fd, buf, read_len));
+        if (n < 0) {
+            PLOG(ERROR) << "read ERROR: fd = " << fd << ", n = " << n;
+            return -1;
+        }
+        ret += n;
+        if (n < read_len) // done reading early
+            break;
+        buf += n;
+        len -= n;
+    }
+    return ret;
+}
+
+int MtpFfsHandle::spliceReadHandle(int fd, int pipe_out, int len) {
+    LOG(VERBOSE) << "MTP about to splice read fd = " << fd << ", len=" << len;
+    int ret = 0;
+    loff_t dummyoff;
+    while (len > 0) {
+        int read_len = std::min(mMaxRead, len);
+        dummyoff = 0;
+        int n = TEMP_FAILURE_RETRY(splice(fd, &dummyoff, pipe_out, nullptr, read_len, 0));
+        if (n < 0) {
+            PLOG(ERROR) << "splice read ERROR: fd = " << fd << ", n = " << n;
+            return -1;
+        }
+        ret += n;
+        if (n < read_len) // done reading early
+            break;
+        len -= n;
+    }
+    return ret;
+}
+
+int MtpFfsHandle::read(void* data, int len) {
+    return readHandle(mBulkOut, data, len);
+}
+
+int MtpFfsHandle::write(const void* data, int len) {
+    return writeHandle(mBulkIn, data, len);
+}
+
+int MtpFfsHandle::start() {
+    mLock.lock();
+
+    mBulkIn.reset(TEMP_FAILURE_RETRY(open(FFS_MTP_EP_IN, O_RDWR)));
+    if (mBulkIn < 0) {
+        PLOG(ERROR) << FFS_MTP_EP_IN << ": cannot open bulk in ep";
+        return -1;
+    }
+
+    mBulkOut.reset(TEMP_FAILURE_RETRY(open(FFS_MTP_EP_OUT, O_RDWR)));
+    if (mBulkOut < 0) {
+        PLOG(ERROR) << FFS_MTP_EP_OUT << ": cannot open bulk out ep";
+        return -1;
+    }
+
+    mIntr.reset(TEMP_FAILURE_RETRY(open(FFS_MTP_EP_INTR, O_RDWR)));
+    if (mIntr < 0) {
+        PLOG(ERROR) << FFS_MTP_EP0 << ": cannot open intr ep";
+        return -1;
+    }
+
+    mBuffer1.resize(MAX_FILE_CHUNK_SIZE);
+    mBuffer2.resize(MAX_FILE_CHUNK_SIZE);
+    posix_madvise(mBuffer1.data(), MAX_FILE_CHUNK_SIZE,
+            POSIX_MADV_SEQUENTIAL | POSIX_MADV_WILLNEED);
+    posix_madvise(mBuffer2.data(), MAX_FILE_CHUNK_SIZE,
+            POSIX_MADV_SEQUENTIAL | POSIX_MADV_WILLNEED);
+
+    // Get device specific r/w size
+    mMaxWrite = android::base::GetIntProperty("sys.usb.ffs.max_write", USB_FFS_MAX_WRITE);
+    mMaxRead = android::base::GetIntProperty("sys.usb.ffs.max_read", USB_FFS_MAX_READ);
+
+    size_t attempts = 0;
+    while (mMaxWrite >= USB_FFS_MAX_WRITE && mMaxRead >= USB_FFS_MAX_READ &&
+            attempts < ENDPOINT_ALLOC_RETRIES) {
+        // If larger contiguous chunks of memory aren't available, attempt to try
+        // smaller allocations.
+        if (ioctl(mBulkIn, FUNCTIONFS_ENDPOINT_ALLOC, static_cast<__u32>(mMaxWrite)) ||
+            ioctl(mBulkOut, FUNCTIONFS_ENDPOINT_ALLOC, static_cast<__u32>(mMaxRead))) {
+            if (errno == ENODEV) {
+                // Driver hasn't enabled endpoints yet.
+                std::this_thread::sleep_for(std::chrono::milliseconds(100));
+                attempts += 1;
+                continue;
+            }
+            mMaxWrite /= 2;
+            mMaxRead /=2;
+        } else {
+            return 0;
+        }
+    }
+    // Try to start MtpServer anyway, with the smallest max r/w values
+    PLOG(ERROR) << "Functionfs could not allocate any memory!";
+    return 0;
+}
+
+int MtpFfsHandle::configure(bool usePtp) {
+    // Wait till previous server invocation has closed
+    std::lock_guard<std::mutex> lk(mLock);
+
+    // If ptp is changed, the configuration must be rewritten
+    if (mPtp != usePtp) {
+        closeEndpoints();
+        closeConfig();
+    }
+    mPtp = usePtp;
+
+    if (!initFunctionfs()) {
+        return -1;
+    }
+
+    return 0;
+}
+
+void MtpFfsHandle::close() {
+    closeEndpoints();
+    mLock.unlock();
+}
+
+/* Read from USB and write to a local file. */
+int MtpFfsHandle::receiveFile(mtp_file_range mfr) {
+    // When receiving files, the incoming length is given in 32 bits.
+    // A >4G file is given as 0xFFFFFFFF
+    uint32_t file_length = mfr.length;
+    uint64_t offset = lseek(mfr.fd, 0, SEEK_CUR);
+
+    char *data = mBuffer1.data();
+    char *data2 = mBuffer2.data();
+
+    struct aiocb aio;
+    aio.aio_fildes = mfr.fd;
+    aio.aio_buf = nullptr;
+    struct aiocb *aiol[] = {&aio};
+    int ret;
+    size_t length;
+    bool read = false;
+    bool write = false;
+
+    posix_fadvise(mfr.fd, 0, 0, POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE);
+
+    // Break down the file into pieces that fit in buffers
+    while (file_length > 0 || write) {
+        if (file_length > 0) {
+            length = std::min(static_cast<uint32_t>(MAX_FILE_CHUNK_SIZE), file_length);
+
+            // Read data from USB
+            if ((ret = readHandle(mBulkOut, data, length)) == -1) {
+                return -1;
+            }
+
+            if (file_length != MAX_MTP_FILE_SIZE && ret < static_cast<int>(length)) {
+                errno = EIO;
+                return -1;
+            }
+            read = true;
+        }
+
+        if (write) {
+            // get the return status of the last write request
+            aio_suspend(aiol, 1, nullptr);
+
+            int written = aio_return(&aio);
+            if (written == -1) {
+                errno = aio_error(&aio);
+                return -1;
+            }
+            if (static_cast<size_t>(written) < aio.aio_nbytes) {
+                errno = EIO;
+                return -1;
+            }
+            write = false;
+        }
+
+        if (read) {
+            // Enqueue a new write request
+            aio.aio_buf = data;
+            aio.aio_sink = mfr.fd;
+            aio.aio_offset = offset;
+            aio.aio_nbytes = ret;
+            aio_write(&aio);
+
+            if (file_length == MAX_MTP_FILE_SIZE) {
+                // For larger files, receive until a short packet is received.
+                if (static_cast<size_t>(ret) < length) {
+                    file_length = 0;
+                }
+            } else {
+                file_length -= ret;
+            }
+
+            offset += ret;
+            std::swap(data, data2);
+
+            write = true;
+            read = false;
+        }
+    }
+    return 0;
+}
+
+/* Read from a local file and send over USB. */
+int MtpFfsHandle::sendFile(mtp_file_range mfr) {
+    uint64_t file_length = mfr.length;
+    uint32_t given_length = std::min(static_cast<uint64_t>(MAX_MTP_FILE_SIZE),
+            file_length + sizeof(mtp_data_header));
+    uint64_t offset = mfr.offset;
+    struct usb_endpoint_descriptor mBulkIn_desc;
+    int packet_size;
+
+    if (ioctl(mBulkIn, FUNCTIONFS_ENDPOINT_DESC, reinterpret_cast<unsigned long>(&mBulkIn_desc))) {
+        PLOG(ERROR) << "Could not get FFS bulk-in descriptor";
+        packet_size = MAX_PACKET_SIZE_HS;
+    } else {
+        packet_size = mBulkIn_desc.wMaxPacketSize;
+    }
+
+    // If file_length is larger than a size_t, truncating would produce the wrong comparison.
+    // Instead, promote the left side to 64 bits, then truncate the small result.
+    int init_read_len = std::min(
+            static_cast<uint64_t>(packet_size - sizeof(mtp_data_header)), file_length);
+
+    char *data = mBuffer1.data();
+    char *data2 = mBuffer2.data();
+
+    posix_fadvise(mfr.fd, 0, 0, POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE);
+
+    struct aiocb aio;
+    aio.aio_fildes = mfr.fd;
+    struct aiocb *aiol[] = {&aio};
+    int ret, length;
+    bool read = false;
+    bool write = false;
+
+    // Send the header data
+    mtp_data_header *header = reinterpret_cast<mtp_data_header*>(data);
+    header->length = __cpu_to_le32(given_length);
+    header->type = __cpu_to_le16(2); /* data packet */
+    header->command = __cpu_to_le16(mfr.command);
+    header->transaction_id = __cpu_to_le32(mfr.transaction_id);
+
+    // Some hosts don't support header/data separation even though MTP allows it
+    // Handle by filling first packet with initial file data
+    if (TEMP_FAILURE_RETRY(pread(mfr.fd, reinterpret_cast<char*>(data) +
+                    sizeof(mtp_data_header), init_read_len, offset))
+            != init_read_len) return -1;
+    if (writeHandle(mBulkIn, data, sizeof(mtp_data_header) + init_read_len) == -1) return -1;
+    if (file_length == static_cast<unsigned>(init_read_len)) return 0;
+    file_length -= init_read_len;
+    offset += init_read_len;
+    ret = 0;
+
+    // Break down the file into pieces that fit in buffers
+    while(file_length > 0) {
+        if (read) {
+            // Wait for the previous read to finish
+            aio_suspend(aiol, 1, nullptr);
+            ret = aio_return(&aio);
+            if (ret == -1) {
+                errno = aio_error(&aio);
+                return -1;
+            }
+            if (static_cast<size_t>(ret) < aio.aio_nbytes) {
+                errno = EIO;
+                return -1;
+            }
+
+            file_length -= ret;
+            offset += ret;
+            std::swap(data, data2);
+            read = false;
+            write = true;
+        }
+
+        if (file_length > 0) {
+            length = std::min(static_cast<uint64_t>(MAX_FILE_CHUNK_SIZE), file_length);
+            // Queue up another read
+            aio.aio_buf = data;
+            aio.aio_offset = offset;
+            aio.aio_nbytes = length;
+            aio_read(&aio);
+            read = true;
+        }
+
+        if (write) {
+            if (writeHandle(mBulkIn, data2, ret) == -1)
+                return -1;
+            write = false;
+        }
+    }
+
+    if (given_length == MAX_MTP_FILE_SIZE && ret % packet_size == 0) {
+        // If the last packet wasn't short, send a final empty packet
+        if (writeHandle(mBulkIn, data, 0) == -1) return -1;
+    }
+
+    return 0;
+}
+
+int MtpFfsHandle::sendEvent(mtp_event me) {
+    unsigned length = me.length;
+    int ret = writeHandle(mIntr, me.data, length);
+    return static_cast<unsigned>(ret) == length ? 0 : -1;
+}
+
+} // namespace android
+
+IMtpHandle *get_ffs_handle() {
+    return new android::MtpFfsHandle();
+}
+
diff --git a/media/mtp/MtpFfsHandle.h b/media/mtp/MtpFfsHandle.h
new file mode 100644
index 0000000..b4d5a97
--- /dev/null
+++ b/media/mtp/MtpFfsHandle.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _MTP_FFS_HANDLE_H
+#define _MTP_FFS_HANDLE_H
+
+#include <android-base/unique_fd.h>
+#include <IMtpHandle.h>
+
+namespace android {
+
+class MtpFfsHandleTest;
+
+class MtpFfsHandle : public IMtpHandle {
+    friend class android::MtpFfsHandleTest;
+private:
+    int writeHandle(int fd, const void *data, int len);
+    int readHandle(int fd, void *data, int len);
+    int spliceReadHandle(int fd, int fd_out, int len);
+    bool initFunctionfs();
+    void closeConfig();
+    void closeEndpoints();
+
+    bool mPtp;
+
+    std::mutex mLock;
+
+    android::base::unique_fd mControl;
+    // "in" from the host's perspective => sink for mtp server
+    android::base::unique_fd mBulkIn;
+    // "out" from the host's perspective => source for mtp server
+    android::base::unique_fd mBulkOut;
+    android::base::unique_fd mIntr;
+
+    int mMaxWrite;
+    int mMaxRead;
+
+    std::vector<char> mBuffer1;
+    std::vector<char> mBuffer2;
+
+public:
+    int read(void *data, int len);
+    int write(const void *data, int len);
+
+    int receiveFile(mtp_file_range mfr);
+    int sendFile(mtp_file_range mfr);
+    int sendEvent(mtp_event me);
+
+    /**
+     * Open ffs endpoints and allocate necessary kernel and user memory.
+     * Will sleep until endpoints are enabled, for up to 1 second.
+     */
+    int start();
+    void close();
+
+    int configure(bool ptp);
+
+    MtpFfsHandle();
+    ~MtpFfsHandle();
+};
+
+struct mtp_data_header {
+    /* length of packet, including this header */
+    __le32 length;
+    /* container type (2 for data packet) */
+    __le16 type;
+    /* MTP command code */
+    __le16 command;
+    /* MTP transaction ID */
+    __le32 transaction_id;
+};
+
+} // namespace android
+
+#endif // _MTP_FF_HANDLE_H
+
diff --git a/media/mtp/MtpPacket.h b/media/mtp/MtpPacket.h
index 4da53bf..d47c91d 100644
--- a/media/mtp/MtpPacket.h
+++ b/media/mtp/MtpPacket.h
@@ -17,6 +17,8 @@
 #ifndef _MTP_PACKET_H
 #define _MTP_PACKET_H
 
+#include <android-base/macros.h>
+
 #include "MtpTypes.h"
 
 struct usb_device;
@@ -66,6 +68,8 @@
     uint32_t            getUInt32(int offset) const;
     void                putUInt16(int offset, uint16_t value);
     void                putUInt32(int offset, uint32_t value);
+
+    DISALLOW_COPY_AND_ASSIGN(MtpPacket);
 };
 
 }; // namespace android
diff --git a/media/mtp/MtpRequestPacket.cpp b/media/mtp/MtpRequestPacket.cpp
index 471967f..e0e86a9 100644
--- a/media/mtp/MtpRequestPacket.cpp
+++ b/media/mtp/MtpRequestPacket.cpp
@@ -20,6 +20,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 
+#include "IMtpHandle.h"
 #include "MtpRequestPacket.h"
 
 #include <usbhost/usbhost.h>
@@ -36,8 +37,8 @@
 }
 
 #ifdef MTP_DEVICE
-int MtpRequestPacket::read(int fd) {
-    int ret = ::read(fd, mBuffer, mBufferSize);
+int MtpRequestPacket::read(IMtpHandle *h) {
+    int ret = h->read(mBuffer, mBufferSize);
     if (ret < 0) {
         // file read error
         return ret;
diff --git a/media/mtp/MtpRequestPacket.h b/media/mtp/MtpRequestPacket.h
index 79b798d..d1dc0ff 100644
--- a/media/mtp/MtpRequestPacket.h
+++ b/media/mtp/MtpRequestPacket.h
@@ -20,6 +20,7 @@
 #include "MtpPacket.h"
 #include "mtp.h"
 
+class IMtpHandle;
 struct usb_request;
 
 namespace android {
@@ -31,8 +32,8 @@
     virtual             ~MtpRequestPacket();
 
 #ifdef MTP_DEVICE
-    // fill our buffer with data from the given file descriptor
-    int                 read(int fd);
+    // fill our buffer with data from the given usb handle
+    int                 read(IMtpHandle *h);
 #endif
 
 #ifdef MTP_HOST
diff --git a/media/mtp/MtpResponsePacket.cpp b/media/mtp/MtpResponsePacket.cpp
index c2b41e4..f186b37 100644
--- a/media/mtp/MtpResponsePacket.cpp
+++ b/media/mtp/MtpResponsePacket.cpp
@@ -20,6 +20,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 
+#include "IMtpHandle.h"
 #include "MtpResponsePacket.h"
 
 #include <usbhost/usbhost.h>
@@ -35,10 +36,10 @@
 }
 
 #ifdef MTP_DEVICE
-int MtpResponsePacket::write(int fd) {
+int MtpResponsePacket::write(IMtpHandle *h) {
     putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
     putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_RESPONSE);
-    int ret = ::write(fd, mBuffer, mPacketSize);
+    int ret = h->write(mBuffer, mPacketSize);
     return (ret < 0 ? ret : 0);
 }
 #endif
diff --git a/media/mtp/MtpResponsePacket.h b/media/mtp/MtpResponsePacket.h
index 592ad4a..29a72ba 100644
--- a/media/mtp/MtpResponsePacket.h
+++ b/media/mtp/MtpResponsePacket.h
@@ -20,6 +20,8 @@
 #include "MtpPacket.h"
 #include "mtp.h"
 
+class IMtpHandle;
+
 namespace android {
 
 class MtpResponsePacket : public MtpPacket {
@@ -29,8 +31,8 @@
     virtual             ~MtpResponsePacket();
 
 #ifdef MTP_DEVICE
-    // write our data to the given file descriptor
-    int                 write(int fd);
+    // write our data to the given usb handle
+    int                 write(IMtpHandle *h);
 #endif
 
 #ifdef MTP_HOST
diff --git a/media/mtp/MtpServer.cpp b/media/mtp/MtpServer.cpp
index 90f1a77..5a1d6dc 100644
--- a/media/mtp/MtpServer.cpp
+++ b/media/mtp/MtpServer.cpp
@@ -14,18 +14,17 @@
  * limitations under the License.
  */
 
+#include <android-base/properties.h>
+#include <chrono>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/types.h>
-#include <sys/ioctl.h>
 #include <sys/stat.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <errno.h>
 #include <sys/stat.h>
-#include <dirent.h>
-
-#include <cutils/properties.h>
 
 #define LOG_TAG "MtpServer"
 
@@ -37,8 +36,6 @@
 #include "MtpStorage.h"
 #include "MtpStringBuffer.h"
 
-#include <linux/usb/f_mtp.h>
-
 namespace android {
 
 static const MtpOperationCode kSupportedOperationCodes[] = {
@@ -97,14 +94,21 @@
     MTP_EVENT_DEVICE_PROP_CHANGED,
 };
 
-MtpServer::MtpServer(int fd, MtpDatabase* database, bool ptp,
-                    int fileGroup, int filePerm, int directoryPerm)
-    :   mFD(fd),
-        mDatabase(database),
+MtpServer::MtpServer(MtpDatabase* database, bool ptp,
+                    int fileGroup, int filePerm, int directoryPerm,
+                    const MtpString& deviceInfoManufacturer,
+                    const MtpString& deviceInfoModel,
+                    const MtpString& deviceInfoDeviceVersion,
+                    const MtpString& deviceInfoSerialNumber)
+    :   mDatabase(database),
         mPtp(ptp),
         mFileGroup(fileGroup),
         mFilePermission(filePerm),
         mDirectoryPermission(directoryPerm),
+        mDeviceInfoManufacturer(deviceInfoManufacturer),
+        mDeviceInfoModel(deviceInfoModel),
+        mDeviceInfoDeviceVersion(deviceInfoDeviceVersion),
+        mDeviceInfoSerialNumber(deviceInfoSerialNumber),
         mSessionID(0),
         mSessionOpen(false),
         mSendObjectHandle(kInvalidObjectHandle),
@@ -116,6 +120,21 @@
 MtpServer::~MtpServer() {
 }
 
+IMtpHandle* MtpServer::sHandle = nullptr;
+
+int MtpServer::configure(bool usePtp) {
+    if (sHandle == nullptr) {
+        bool ffs_ok = access(FFS_MTP_EP0, W_OK) == 0;
+        sHandle = ffs_ok ? get_ffs_handle() : get_mtp_handle();
+    }
+
+    int ret = sHandle->configure(usePtp);
+    if (ret) ALOGE("Failed to configure MTP driver!");
+    else android::base::SetProperty("sys.usb.ffs.mtp.ready", "1");
+
+    return ret;
+}
+
 void MtpServer::addStorage(MtpStorage* storage) {
     Mutex::Autolock autoLock(mMutex);
 
@@ -143,24 +162,31 @@
         if (storage->getStorageID() == id)
             return storage;
     }
-    return NULL;
+    return nullptr;
 }
 
 bool MtpServer::hasStorage(MtpStorageID id) {
     if (id == 0 || id == 0xFFFFFFFF)
         return mStorages.size() > 0;
-    return (getStorage(id) != NULL);
+    return (getStorage(id) != nullptr);
 }
 
 void MtpServer::run() {
-    int fd = mFD;
+    if (!sHandle) {
+        ALOGE("MtpServer was never configured!");
+        return;
+    }
 
-    ALOGV("MtpServer::run fd: %d\n", fd);
+    if (sHandle->start()) {
+        ALOGE("Failed to start usb driver!");
+        sHandle->close();
+        return;
+    }
 
     while (1) {
-        int ret = mRequest.read(fd);
+        int ret = mRequest.read(sHandle);
         if (ret < 0) {
-            ALOGV("request read returned %d, errno: %d", ret, errno);
+            ALOGE("request read returned %d, errno: %d", ret, errno);
             if (errno == ECANCELED) {
                 // return to top of loop and wait for next command
                 continue;
@@ -171,15 +197,13 @@
         MtpTransactionID transaction = mRequest.getTransactionID();
 
         ALOGV("operation: %s", MtpDebug::getOperationCodeName(operation));
-        mRequest.dump();
-
         // FIXME need to generalize this
         bool dataIn = (operation == MTP_OPERATION_SEND_OBJECT_INFO
                     || operation == MTP_OPERATION_SET_OBJECT_REFERENCES
                     || operation == MTP_OPERATION_SET_OBJECT_PROP_VALUE
                     || operation == MTP_OPERATION_SET_DEVICE_PROP_VALUE);
         if (dataIn) {
-            int ret = mData.read(fd);
+            int ret = mData.read(sHandle);
             if (ret < 0) {
                 ALOGE("data read returned %d, errno: %d", ret, errno);
                 if (errno == ECANCELED) {
@@ -189,7 +213,6 @@
                 break;
             }
             ALOGV("received data:");
-            mData.dump();
         } else {
             mData.reset();
         }
@@ -199,8 +222,7 @@
                 mData.setOperationCode(operation);
                 mData.setTransactionID(transaction);
                 ALOGV("sending data:");
-                mData.dump();
-                ret = mData.write(fd);
+                ret = mData.write(sHandle);
                 if (ret < 0) {
                     ALOGE("request write returned %d, errno: %d", ret, errno);
                     if (errno == ECANCELED) {
@@ -213,9 +235,8 @@
 
             mResponse.setTransactionID(transaction);
             ALOGV("sending response %04X", mResponse.getResponseCode());
-            ret = mResponse.write(fd);
+            ret = mResponse.write(sHandle);
             const int savedErrno = errno;
-            mResponse.dump();
             if (ret < 0) {
                 ALOGE("request write returned %d, errno: %d", ret, errno);
                 if (savedErrno == ECANCELED) {
@@ -240,8 +261,8 @@
 
     if (mSessionOpen)
         mDatabase->sessionEnded();
-    close(fd);
-    mFD = -1;
+
+    sHandle->close();
 }
 
 void MtpServer::sendObjectAdded(MtpObjectHandle handle) {
@@ -274,8 +295,8 @@
         mEvent.setEventCode(code);
         mEvent.setTransactionID(mRequest.getTransactionID());
         mEvent.setParameter(1, param1);
-        int ret = mEvent.write(mFD);
-        ALOGV("mEvent.write returned %d\n", ret);
+        if (mEvent.write(sHandle))
+            ALOGE("Mtp send event failed: %s", strerror(errno));
     }
 }
 
@@ -291,7 +312,7 @@
         ObjectEdit* edit = mObjectEditList[i];
         if (edit->mHandle == handle) return edit;
     }
-    return NULL;
+    return nullptr;
 }
 
 void MtpServer::removeEditObject(MtpObjectHandle handle) {
@@ -438,7 +459,6 @@
 
 MtpResponseCode MtpServer::doGetDeviceInfo() {
     MtpStringBuffer   string;
-    char prop_value[PROPERTY_VALUE_MAX];
 
     MtpObjectFormatList* playbackFormats = mDatabase->getSupportedPlaybackFormats();
     MtpObjectFormatList* captureFormats = mDatabase->getSupportedCaptureFormats();
@@ -470,19 +490,10 @@
     mData.putAUInt16(captureFormats); // Capture Formats
     mData.putAUInt16(playbackFormats);  // Playback Formats
 
-    property_get("ro.product.manufacturer", prop_value, "unknown manufacturer");
-    string.set(prop_value);
-    mData.putString(string);   // Manufacturer
-
-    property_get("ro.product.model", prop_value, "MTP Device");
-    string.set(prop_value);
-    mData.putString(string);   // Model
-    string.set("1.0");
-    mData.putString(string);   // Device Version
-
-    property_get("ro.serialno", prop_value, "????????");
-    string.set(prop_value);
-    mData.putString(string);   // Serial Number
+    mData.putString(mDeviceInfoManufacturer); // Manufacturer
+    mData.putString(mDeviceInfoModel); // Model
+    mData.putString(mDeviceInfoDeviceVersion); // Device Version
+    mData.putString(mDeviceInfoSerialNumber); // Serial Number
 
     delete playbackFormats;
     delete captureFormats;
@@ -775,6 +786,8 @@
     if (result != MTP_RESPONSE_OK)
         return result;
 
+    auto start = std::chrono::steady_clock::now();
+
     const char* filePath = (const char *)pathBuf;
     mtp_file_range  mfr;
     mfr.fd = open(filePath, O_RDONLY);
@@ -787,8 +800,9 @@
     mfr.transaction_id = mRequest.getTransactionID();
 
     // then transfer the file
-    int ret = ioctl(mFD, MTP_SEND_FILE_WITH_HEADER, (unsigned long)&mfr);
+    int ret = sHandle->sendFile(mfr);
     if (ret < 0) {
+        ALOGE("Mtp send file got error %s", strerror(errno));
         if (errno == ECANCELED) {
             result = MTP_RESPONSE_TRANSACTION_CANCELLED;
         } else {
@@ -798,7 +812,13 @@
         result = MTP_RESPONSE_OK;
     }
 
-    ALOGV("MTP_SEND_FILE_WITH_HEADER returned %d\n", ret);
+    auto end = std::chrono::steady_clock::now();
+    std::chrono::duration<double> diff = end - start;
+    struct stat sstat;
+    fstat(mfr.fd, &sstat);
+    uint64_t finalsize = sstat.st_size;
+    ALOGV("Sent a file over MTP. Time: %f s, Size: %" PRIu64 ", Rate: %f bytes/s",
+            diff.count(), finalsize, ((double) finalsize) / diff.count());
     close(mfr.fd);
     return result;
 }
@@ -813,7 +833,7 @@
         // send data
         mData.setOperationCode(mRequest.getOperationCode());
         mData.setTransactionID(mRequest.getTransactionID());
-        mData.writeData(mFD, thumb, thumbSize);
+        mData.writeData(sHandle, thumb, thumbSize);
         free(thumb);
         return MTP_RESPONSE_OK;
     } else {
@@ -867,7 +887,7 @@
     mResponse.setParameter(1, length);
 
     // transfer the file
-    int ret = ioctl(mFD, MTP_SEND_FILE_WITH_HEADER, (unsigned long)&mfr);
+    int ret = sHandle->sendFile(mfr);
     ALOGV("MTP_SEND_FILE_WITH_HEADER returned %d\n", ret);
     result = MTP_RESPONSE_OK;
     if (ret < 0) {
@@ -927,6 +947,10 @@
     if (!mData.getUInt32(temp32)) return MTP_RESPONSE_INVALID_PARAMETER;  // sequence number
     MtpStringBuffer name, created, modified;
     if (!mData.getString(name)) return MTP_RESPONSE_INVALID_PARAMETER;    // file name
+    if (name.getCharCount() == 0) {
+        ALOGE("empty name");
+        return MTP_RESPONSE_INVALID_PARAMETER;
+    }
     if (!mData.getString(created)) return MTP_RESPONSE_INVALID_PARAMETER;      // date created
     if (!mData.getString(modified)) return MTP_RESPONSE_INVALID_PARAMETER;     // date modified
     // keywords follow
@@ -991,6 +1015,8 @@
     int ret, initialData;
     bool isCanceled = false;
 
+    auto start = std::chrono::steady_clock::now();
+
     if (mSendObjectHandle == kInvalidObjectHandle) {
         ALOGE("Expected SendObjectInfo before SendObject");
         result = MTP_RESPONSE_NO_VALID_OBJECT_INFO;
@@ -998,7 +1024,7 @@
     }
 
     // read the header, and possibly some data
-    ret = mData.read(mFD);
+    ret = mData.read(sHandle);
     if (ret < MTP_CONTAINER_HEADER_SIZE) {
         result = MTP_RESPONSE_GENERAL_ERROR;
         goto done;
@@ -1034,19 +1060,22 @@
                 mfr.length = mSendObjectFileSize - initialData;
             }
 
-            ALOGV("receiving %s\n", (const char *)mSendObjectFilePath);
+            mfr.command = 0;
+            mfr.transaction_id = 0;
+
             // transfer the file
-            ret = ioctl(mFD, MTP_RECEIVE_FILE, (unsigned long)&mfr);
+            ret = sHandle->receiveFile(mfr);
             if ((ret < 0) && (errno == ECANCELED)) {
                 isCanceled = true;
             }
-
-            ALOGV("MTP_RECEIVE_FILE returned %d\n", ret);
         }
     }
+    struct stat sstat;
+    fstat(mfr.fd, &sstat);
     close(mfr.fd);
 
     if (ret < 0) {
+        ALOGE("Mtp receive file got error %s", strerror(errno));
         unlink(mSendObjectFilePath);
         if (isCanceled)
             result = MTP_RESPONSE_TRANSACTION_CANCELLED;
@@ -1062,6 +1091,12 @@
             result == MTP_RESPONSE_OK);
     mSendObjectHandle = kInvalidObjectHandle;
     mSendObjectFormat = 0;
+
+    auto end = std::chrono::steady_clock::now();
+    std::chrono::duration<double> diff = end - start;
+    uint64_t finalsize = sstat.st_size;
+    ALOGV("Got a file over MTP. Time: %fs, Size: %" PRIu64 ", Rate: %f bytes/s",
+            diff.count(), finalsize, ((double) finalsize) / diff.count());
     return result;
 }
 
@@ -1205,7 +1240,7 @@
     ALOGV("receiving partial %s %" PRIu64 " %" PRIu32, filePath, offset, length);
 
     // read the header, and possibly some data
-    int ret = mData.read(mFD);
+    int ret = mData.read(sHandle);
     if (ret < MTP_CONTAINER_HEADER_SIZE)
         return MTP_RESPONSE_GENERAL_ERROR;
     int initialData = ret - MTP_CONTAINER_HEADER_SIZE;
@@ -1225,13 +1260,14 @@
             mfr.fd = edit->mFD;
             mfr.offset = offset;
             mfr.length = length;
+            mfr.command = 0;
+            mfr.transaction_id = 0;
 
             // transfer the file
-            ret = ioctl(mFD, MTP_RECEIVE_FILE, (unsigned long)&mfr);
+            ret = sHandle->receiveFile(mfr);
             if ((ret < 0) && (errno == ECANCELED)) {
                 isCanceled = true;
             }
-            ALOGV("MTP_RECEIVE_FILE returned %d", ret);
         }
     }
     if (ret < 0) {
diff --git a/media/mtp/MtpServer.h b/media/mtp/MtpServer.h
index b3a11e0..64d1b72 100644
--- a/media/mtp/MtpServer.h
+++ b/media/mtp/MtpServer.h
@@ -23,8 +23,12 @@
 #include "MtpEventPacket.h"
 #include "mtp.h"
 #include "MtpUtils.h"
+#include "IMtpHandle.h"
 
 #include <utils/threads.h>
+#include <queue>
+#include <memory>
+#include <mutex>
 
 namespace android {
 
@@ -34,9 +38,6 @@
 class MtpServer {
 
 private:
-    // file descriptor for MTP kernel driver
-    int                 mFD;
-
     MtpDatabase*        mDatabase;
 
     // appear as a PTP device
@@ -48,6 +49,15 @@
     int                 mFilePermission;
     int                 mDirectoryPermission;
 
+    // Manufacturer to report in DeviceInfo
+    MtpString           mDeviceInfoManufacturer;
+    // Model to report in DeviceInfo
+    MtpString           mDeviceInfoModel;
+    // Device version to report in DeviceInfo
+    MtpString           mDeviceInfoDeviceVersion;
+    // Serial number to report in DeviceInfo
+    MtpString           mDeviceInfoSerialNumber;
+
     // current session ID
     MtpSessionID        mSessionID;
     // true if we have an open session and mSessionID is valid
@@ -56,10 +66,13 @@
     MtpRequestPacket    mRequest;
     MtpDataPacket       mData;
     MtpResponsePacket   mResponse;
+
     MtpEventPacket      mEvent;
 
     MtpStorageList      mStorages;
 
+    static IMtpHandle*  sHandle;
+
     // handle for new object, set by SendObjectInfo and used by SendObject
     MtpObjectHandle     mSendObjectHandle;
     MtpObjectFormat     mSendObjectFormat;
@@ -90,8 +103,12 @@
     Vector<ObjectEdit*>  mObjectEditList;
 
 public:
-                        MtpServer(int fd, MtpDatabase* database, bool ptp,
-                                    int fileGroup, int filePerm, int directoryPerm);
+                        MtpServer(MtpDatabase* database, bool ptp,
+                                    int fileGroup, int filePerm, int directoryPerm,
+                                    const MtpString& deviceInfoManufacturer,
+                                    const MtpString& deviceInfoModel,
+                                    const MtpString& deviceInfoDeviceVersion,
+                                    const MtpString& deviceInfoSerialNumber);
     virtual             ~MtpServer();
 
     MtpStorage*         getStorage(MtpStorageID id);
@@ -100,6 +117,7 @@
     void                addStorage(MtpStorage* storage);
     void                removeStorage(MtpStorage* storage);
 
+    static int          configure(bool usePtp);
     void                run();
 
     void                sendObjectAdded(MtpObjectHandle handle);
diff --git a/media/mtp/tests/Android.mk b/media/mtp/tests/Android.mk
new file mode 100644
index 0000000..ace0d40
--- /dev/null
+++ b/media/mtp/tests/Android.mk
@@ -0,0 +1,51 @@
+# Build the unit tests.
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+
+LOCAL_MODULE := mtp_ffs_handle_test
+
+LOCAL_MODULE_TAGS := tests
+
+LOCAL_SRC_FILES := \
+	MtpFfsHandle_test.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+	libbase \
+	libcutils \
+	libmedia \
+	libmtp \
+	libutils \
+	liblog
+
+LOCAL_C_INCLUDES := \
+	frameworks/av/media/mtp \
+
+LOCAL_CFLAGS += -Werror -Wall
+
+include $(BUILD_NATIVE_TEST)
+
+include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+
+LOCAL_MODULE := async_io_test
+
+LOCAL_MODULE_TAGS := tests
+
+LOCAL_SRC_FILES := \
+	AsyncIO_test.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+	libbase \
+	libcutils \
+	libmedia \
+	libmtp \
+	libutils \
+	liblog
+
+LOCAL_C_INCLUDES := \
+	frameworks/av/media/mtp \
+
+LOCAL_CFLAGS += -Werror -Wall
+
+include $(BUILD_NATIVE_TEST)
diff --git a/media/mtp/tests/AsyncIO_test.cpp b/media/mtp/tests/AsyncIO_test.cpp
new file mode 100644
index 0000000..b5f4538
--- /dev/null
+++ b/media/mtp/tests/AsyncIO_test.cpp
@@ -0,0 +1,192 @@
+/*
+ * Copyright 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "AsyncIO_test.cpp"
+
+#include <android-base/test_utils.h>
+#include <fcntl.h>
+#include <gtest/gtest.h>
+#include <string>
+#include <unistd.h>
+#include <utils/Log.h>
+
+#include "AsyncIO.h"
+
+namespace android {
+
+constexpr int TEST_PACKET_SIZE = 512;
+constexpr int POOL_COUNT = 10;
+
+static const std::string dummyDataStr =
+    "/*\n * Copyright 2015 The Android Open Source Project\n *\n * Licensed un"
+    "der the Apache License, Version 2.0 (the \"License\");\n * you may not us"
+    "e this file except in compliance with the License.\n * You may obtain a c"
+    "opy of the License at\n *\n *      http://www.apache.org/licenses/LICENSE"
+    "-2.0\n *\n * Unless required by applicable law or agreed to in writing, s"
+    "oftware\n * distributed under the License is distributed on an \"AS IS\" "
+    "BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express o"
+    "r implied.\n * Se";
+
+
+class AsyncIOTest : public ::testing::Test {
+protected:
+    TemporaryFile dummy_file;
+
+    AsyncIOTest() {}
+    ~AsyncIOTest() {}
+};
+
+TEST_F(AsyncIOTest, testRead) {
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    EXPECT_EQ(write(dummy_file.fd, dummyDataStr.c_str(), TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    struct aiocb aio;
+    struct aiocb *aiol[] = {&aio};
+    aio.aio_fildes = dummy_file.fd;
+    aio.aio_buf = buf;
+    aio.aio_offset = 0;
+    aio.aio_nbytes = TEST_PACKET_SIZE;
+
+    EXPECT_EQ(aio_read(&aio), 0);
+    EXPECT_EQ(aio_suspend(aiol, 1, nullptr), 0);
+    EXPECT_EQ(aio_return(&aio), TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+TEST_F(AsyncIOTest, testWrite) {
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    struct aiocb aio;
+    struct aiocb *aiol[] = {&aio};
+    aio.aio_fildes = dummy_file.fd;
+    aio.aio_buf = const_cast<char*>(dummyDataStr.c_str());
+    aio.aio_offset = 0;
+    aio.aio_nbytes = TEST_PACKET_SIZE;
+
+    EXPECT_EQ(aio_write(&aio), 0);
+    EXPECT_EQ(aio_suspend(aiol, 1, nullptr), 0);
+    EXPECT_EQ(aio_return(&aio), TEST_PACKET_SIZE);
+    EXPECT_EQ(read(dummy_file.fd, buf, TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+TEST_F(AsyncIOTest, testError) {
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    struct aiocb aio;
+    struct aiocb *aiol[] = {&aio};
+    aio.aio_fildes = -1;
+    aio.aio_buf = const_cast<char*>(dummyDataStr.c_str());
+    aio.aio_offset = 0;
+    aio.aio_nbytes = TEST_PACKET_SIZE;
+
+    EXPECT_EQ(aio_write(&aio), 0);
+    EXPECT_EQ(aio_suspend(aiol, 1, nullptr), 0);
+    EXPECT_EQ(aio_return(&aio), -1);
+    EXPECT_EQ(aio_error(&aio), EBADF);
+}
+
+TEST_F(AsyncIOTest, testSpliceRead) {
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    int pipeFd[2];
+    EXPECT_EQ(pipe(pipeFd), 0);
+    EXPECT_EQ(write(dummy_file.fd, dummyDataStr.c_str(), TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    struct aiocb aio;
+    struct aiocb *aiol[] = {&aio};
+    aio.aio_fildes = dummy_file.fd;
+    aio.aio_sink = pipeFd[1];
+    aio.aio_offset = 0;
+    aio.aio_nbytes = TEST_PACKET_SIZE;
+
+    EXPECT_EQ(aio_splice_read(&aio), 0);
+    EXPECT_EQ(aio_suspend(aiol, 1, nullptr), 0);
+    EXPECT_EQ(aio_return(&aio), TEST_PACKET_SIZE);
+
+    EXPECT_EQ(read(pipeFd[0], buf, TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+TEST_F(AsyncIOTest, testSpliceWrite) {
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    int pipeFd[2];
+    EXPECT_EQ(pipe(pipeFd), 0);
+    EXPECT_EQ(write(pipeFd[1], dummyDataStr.c_str(), TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    struct aiocb aio;
+    struct aiocb *aiol[] = {&aio};
+    aio.aio_fildes = pipeFd[0];
+    aio.aio_sink = dummy_file.fd;
+    aio.aio_offset = 0;
+    aio.aio_nbytes = TEST_PACKET_SIZE;
+
+    EXPECT_EQ(aio_splice_write(&aio), 0);
+    EXPECT_EQ(aio_suspend(aiol, 1, nullptr), 0);
+    EXPECT_EQ(aio_return(&aio), TEST_PACKET_SIZE);
+    EXPECT_EQ(read(dummy_file.fd, buf, TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+TEST_F(AsyncIOTest, testPoolWrite) {
+    aio_pool_write_init();
+    char buf[TEST_PACKET_SIZE * POOL_COUNT + 1];
+    buf[TEST_PACKET_SIZE * POOL_COUNT] = '\0';
+
+    for (int i = 0; i < POOL_COUNT; i++) {
+        struct aiocb *aiop = new struct aiocb;
+        aiop->aio_fildes = dummy_file.fd;
+        aiop->aio_pool_buf = std::unique_ptr<char[]>(new char[TEST_PACKET_SIZE]);
+        memcpy(aiop->aio_pool_buf.get(), dummyDataStr.c_str(), TEST_PACKET_SIZE);
+        aiop->aio_offset = i * TEST_PACKET_SIZE;
+        aiop->aio_nbytes = TEST_PACKET_SIZE;
+        EXPECT_EQ(aio_pool_write(aiop), 0);
+    }
+    aio_pool_end();
+    EXPECT_EQ(read(dummy_file.fd, buf, TEST_PACKET_SIZE * POOL_COUNT), TEST_PACKET_SIZE * POOL_COUNT);
+
+    std::stringstream ss;
+    for (int i = 0; i < POOL_COUNT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_STREQ(buf, ss.str().c_str());
+}
+
+TEST_F(AsyncIOTest, testSplicePoolWrite) {
+    aio_pool_splice_init();
+    char buf[TEST_PACKET_SIZE * POOL_COUNT + 1];
+    buf[TEST_PACKET_SIZE * POOL_COUNT] = '\0';
+
+    for (int i = 0; i < POOL_COUNT; i++) {
+        int pipeFd[2];
+        EXPECT_EQ(pipe(pipeFd), 0);
+        EXPECT_EQ(write(pipeFd[1], dummyDataStr.c_str(), TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+        struct aiocb *aiop = new struct aiocb;
+        aiop->aio_fildes = pipeFd[0];
+        aiop->aio_sink = dummy_file.fd;
+        aiop->aio_offset = i * TEST_PACKET_SIZE;
+        aiop->aio_nbytes = TEST_PACKET_SIZE;
+        EXPECT_EQ(aio_pool_write(aiop), 0);
+    }
+    aio_pool_end();
+    EXPECT_EQ(read(dummy_file.fd, buf, TEST_PACKET_SIZE * POOL_COUNT), TEST_PACKET_SIZE * POOL_COUNT);
+
+    std::stringstream ss;
+    for (int i = 0; i < POOL_COUNT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_STREQ(buf, ss.str().c_str());
+}
+
+} // namespace android
diff --git a/media/mtp/tests/MtpFfsHandle_test.cpp b/media/mtp/tests/MtpFfsHandle_test.cpp
new file mode 100644
index 0000000..e575148
--- /dev/null
+++ b/media/mtp/tests/MtpFfsHandle_test.cpp
@@ -0,0 +1,280 @@
+/*
+ * Copyright 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "MtpFfsHandle_test.cpp"
+
+#include <android-base/unique_fd.h>
+#include <android-base/test_utils.h>
+#include <fcntl.h>
+#include <gtest/gtest.h>
+#include <memory>
+#include <random>
+#include <string>
+#include <unistd.h>
+#include <utils/Log.h>
+
+#include "MtpFfsHandle.h"
+
+namespace android {
+
+constexpr int MAX_FILE_CHUNK_SIZE = 3 * 1024 * 1024;
+
+constexpr int TEST_PACKET_SIZE = 512;
+constexpr int SMALL_MULT = 30;
+constexpr int MED_MULT = 510;
+
+static const std::string dummyDataStr =
+    "/*\n * Copyright 2015 The Android Open Source Project\n *\n * Licensed un"
+    "der the Apache License, Version 2.0 (the \"License\");\n * you may not us"
+    "e this file except in compliance with the License.\n * You may obtain a c"
+    "opy of the License at\n *\n *      http://www.apache.org/licenses/LICENSE"
+    "-2.0\n *\n * Unless required by applicable law or agreed to in writing, s"
+    "oftware\n * distributed under the License is distributed on an \"AS IS\" "
+    "BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express o"
+    "r implied.\n * Se";
+
+/**
+ * Functional tests for the MtpFfsHandle class. Ensures header and data integrity
+ * by mocking ffs endpoints as pipes to capture input / output.
+ */
+class MtpFfsHandleTest : public ::testing::Test {
+protected:
+    std::unique_ptr<IMtpHandle> handle;
+
+    // Pipes for reading endpoint data
+    android::base::unique_fd bulk_in;
+    android::base::unique_fd bulk_out;
+    android::base::unique_fd intr;
+
+    TemporaryFile dummy_file;
+
+    MtpFfsHandleTest() {
+        int fd[2];
+        handle = std::unique_ptr<IMtpHandle>(get_ffs_handle());
+        MtpFfsHandle *ffs_handle = static_cast<MtpFfsHandle*>(handle.get());
+        EXPECT_TRUE(ffs_handle != NULL);
+
+        EXPECT_EQ(pipe(fd), 0);
+        EXPECT_EQ(fcntl(fd[0], F_SETPIPE_SZ, 1048576), 1048576);
+        bulk_in.reset(fd[0]);
+        ffs_handle->mBulkIn.reset(fd[1]);
+
+        EXPECT_EQ(pipe(fd), 0);
+        EXPECT_EQ(fcntl(fd[0], F_SETPIPE_SZ, 1048576), 1048576);
+        bulk_out.reset(fd[1]);
+        ffs_handle->mBulkOut.reset(fd[0]);
+
+        EXPECT_EQ(pipe(fd), 0);
+        intr.reset(fd[0]);
+        ffs_handle->mIntr.reset(fd[1]);
+
+        ffs_handle->mBuffer1.resize(MAX_FILE_CHUNK_SIZE);
+        ffs_handle->mBuffer2.resize(MAX_FILE_CHUNK_SIZE);
+    }
+
+    ~MtpFfsHandleTest() {}
+};
+
+TEST_F(MtpFfsHandleTest, testRead) {
+    EXPECT_EQ(write(bulk_out, dummyDataStr.c_str(), TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    EXPECT_EQ(handle->read(buf, TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+TEST_F(MtpFfsHandleTest, testWrite) {
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+    EXPECT_EQ(handle->write(dummyDataStr.c_str(), TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    EXPECT_EQ(read(bulk_in, buf, TEST_PACKET_SIZE), TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+TEST_F(MtpFfsHandleTest, testReceiveFileSmall) {
+    std::stringstream ss;
+    mtp_file_range mfr;
+    int size = TEST_PACKET_SIZE * SMALL_MULT;
+    char buf[size + 1];
+    buf[size] = '\0';
+
+    mfr.length = size;
+    mfr.fd = dummy_file.fd;
+    for (int i = 0; i < SMALL_MULT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_EQ(write(bulk_out, ss.str().c_str(), size), size);
+    EXPECT_EQ(handle->receiveFile(mfr), 0);
+
+    EXPECT_EQ(read(dummy_file.fd, buf, size), size);
+
+    EXPECT_STREQ(buf, ss.str().c_str());
+}
+
+TEST_F(MtpFfsHandleTest, testReceiveFileMed) {
+    std::stringstream ss;
+    mtp_file_range mfr;
+    int size = TEST_PACKET_SIZE * MED_MULT;
+    char buf[size + 1];
+    buf[size] = '\0';
+
+    mfr.length = size;
+    mfr.fd = dummy_file.fd;
+    for (int i = 0; i < MED_MULT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_EQ(write(bulk_out, ss.str().c_str(), size), size);
+    EXPECT_EQ(handle->receiveFile(mfr), 0);
+
+    EXPECT_EQ(read(dummy_file.fd, buf, size), size);
+
+    EXPECT_STREQ(buf, ss.str().c_str());
+}
+
+TEST_F(MtpFfsHandleTest, testSendFileSmall) {
+    std::stringstream ss;
+    mtp_file_range mfr;
+    mfr.command = 42;
+    mfr.transaction_id = 1337;
+    mfr.offset = 0;
+    int size = TEST_PACKET_SIZE * SMALL_MULT;
+    char buf[size + sizeof(mtp_data_header) + 1];
+    buf[size + sizeof(mtp_data_header)] = '\0';
+
+    mfr.length = size;
+    mfr.fd = dummy_file.fd;
+    for (int i = 0; i < SMALL_MULT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_EQ(write(dummy_file.fd, ss.str().c_str(), size), size);
+    EXPECT_EQ(handle->sendFile(mfr), 0);
+
+    EXPECT_EQ(read(bulk_in, buf, size + sizeof(mtp_data_header)),
+            static_cast<long>(size + sizeof(mtp_data_header)));
+
+    struct mtp_data_header *header = reinterpret_cast<struct mtp_data_header*>(buf);
+    EXPECT_STREQ(buf + sizeof(mtp_data_header), ss.str().c_str());
+    EXPECT_EQ(header->length, static_cast<unsigned int>(size + sizeof(mtp_data_header)));
+    EXPECT_EQ(header->type, static_cast<unsigned int>(2));
+    EXPECT_EQ(header->command, static_cast<unsigned int>(42));
+    EXPECT_EQ(header->transaction_id, static_cast<unsigned int>(1337));
+}
+
+TEST_F(MtpFfsHandleTest, testSendFileMed) {
+    std::stringstream ss;
+    mtp_file_range mfr;
+    mfr.command = 42;
+    mfr.transaction_id = 1337;
+    mfr.offset = 0;
+    int size = TEST_PACKET_SIZE * MED_MULT;
+    char buf[size + sizeof(mtp_data_header) + 1];
+    buf[size + sizeof(mtp_data_header)] = '\0';
+
+    mfr.length = size;
+    mfr.fd = dummy_file.fd;
+    for (int i = 0; i < MED_MULT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_EQ(write(dummy_file.fd, ss.str().c_str(), size), size);
+    EXPECT_EQ(handle->sendFile(mfr), 0);
+
+    EXPECT_EQ(read(bulk_in, buf, size + sizeof(mtp_data_header)),
+            static_cast<long>(size + sizeof(mtp_data_header)));
+
+    struct mtp_data_header *header = reinterpret_cast<struct mtp_data_header*>(buf);
+    EXPECT_STREQ(buf + sizeof(mtp_data_header), ss.str().c_str());
+    EXPECT_EQ(header->length, static_cast<unsigned int>(size + sizeof(mtp_data_header)));
+    EXPECT_EQ(header->type, static_cast<unsigned int>(2));
+    EXPECT_EQ(header->command, static_cast<unsigned int>(42));
+    EXPECT_EQ(header->transaction_id, static_cast<unsigned int>(1337));
+}
+
+TEST_F(MtpFfsHandleTest, testSendFileMedPartial) {
+    std::stringstream ss;
+    mtp_file_range mfr;
+    mfr.fd = dummy_file.fd;
+    mfr.command = 42;
+    mfr.transaction_id = 1337;
+    int size = TEST_PACKET_SIZE * MED_MULT;
+    char buf[size + 1];
+    buf[size] = '\0';
+
+    for (int i = 0; i < MED_MULT; i++)
+        ss << dummyDataStr;
+
+    EXPECT_EQ(write(dummy_file.fd, ss.str().c_str(), size), size);
+
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::uniform_int_distribution<> dis(1, TEST_PACKET_SIZE);
+    int offset = 0;
+    while (offset != size) {
+        mfr.offset = offset;
+        int length = std::min(size - offset, dis(gen));
+        mfr.length = length;
+        char temp_buf[length + sizeof(mtp_data_header)];
+        EXPECT_EQ(handle->sendFile(mfr), 0);
+
+        EXPECT_EQ(read(bulk_in, temp_buf, length + sizeof(mtp_data_header)),
+                static_cast<long>(length + sizeof(mtp_data_header)));
+
+        struct mtp_data_header *header = reinterpret_cast<struct mtp_data_header*>(temp_buf);
+        EXPECT_EQ(header->length, static_cast<unsigned int>(length + sizeof(mtp_data_header)));
+        EXPECT_EQ(header->type, static_cast<unsigned int>(2));
+        EXPECT_EQ(header->command, static_cast<unsigned int>(42));
+        EXPECT_EQ(header->transaction_id, static_cast<unsigned int>(1337));
+        memcpy(buf + offset, temp_buf + sizeof(mtp_data_header), length);
+        offset += length;
+    }
+    EXPECT_STREQ(buf, ss.str().c_str());
+}
+
+TEST_F(MtpFfsHandleTest, testSendFileEmpty) {
+    mtp_file_range mfr;
+    mfr.command = 42;
+    mfr.transaction_id = 1337;
+    mfr.offset = 0;
+    int size = 0;
+    char buf[size + sizeof(mtp_data_header) + 1];
+    buf[size + sizeof(mtp_data_header)] = '\0';
+
+    mfr.length = size;
+    mfr.fd = dummy_file.fd;
+
+    EXPECT_EQ(handle->sendFile(mfr), 0);
+
+    EXPECT_EQ(read(bulk_in, buf, size + sizeof(mtp_data_header)),
+            static_cast<long>(size + sizeof(mtp_data_header)));
+
+    struct mtp_data_header *header = reinterpret_cast<struct mtp_data_header*>(buf);
+    EXPECT_EQ(header->length, static_cast<unsigned int>(size + sizeof(mtp_data_header)));
+    EXPECT_EQ(header->type, static_cast<unsigned int>(2));
+    EXPECT_EQ(header->command, static_cast<unsigned int>(42));
+    EXPECT_EQ(header->transaction_id, static_cast<unsigned int>(1337));
+}
+
+TEST_F(MtpFfsHandleTest, testSendEvent) {
+    struct mtp_event event;
+    event.length = TEST_PACKET_SIZE;
+    event.data = const_cast<char*>(dummyDataStr.c_str());
+    char buf[TEST_PACKET_SIZE + 1];
+    buf[TEST_PACKET_SIZE] = '\0';
+
+    handle->sendEvent(event);
+    read(intr, buf, TEST_PACKET_SIZE);
+    EXPECT_STREQ(buf, dummyDataStr.c_str());
+}
+
+} // namespace android
diff --git a/media/ndk/Android.bp b/media/ndk/Android.bp
index 1ac1eeb..e4e3d8f 100644
--- a/media/ndk/Android.bp
+++ b/media/ndk/Android.bp
@@ -20,4 +20,5 @@
     name: "libmediandk.ndk",
     symbol_file: "libmediandk.map.txt",
     first_version: "21",
+    unversioned_until: "current",
 }
diff --git a/media/ndk/Android.mk b/media/ndk/Android.mk
index f287761..a4f999f 100644
--- a/media/ndk/Android.mk
+++ b/media/ndk/Android.mk
@@ -40,7 +40,7 @@
 
 LOCAL_CFLAGS += -fvisibility=hidden -D EXPORT='__attribute__ ((visibility ("default")))'
 
-LOCAL_CFLAGS += -Werror
+LOCAL_CFLAGS += -Werror -Wall
 
 LOCAL_SHARED_LIBRARIES := \
     libbinder \
diff --git a/media/ndk/NdkMediaExtractor.cpp b/media/ndk/NdkMediaExtractor.cpp
index 1118959..805eafb 100644
--- a/media/ndk/NdkMediaExtractor.cpp
+++ b/media/ndk/NdkMediaExtractor.cpp
@@ -86,7 +86,6 @@
     jobject service = NULL;
     if (env == NULL) {
         ALOGE("setDataSource(path) must be called from Java thread");
-        env->ExceptionClear();
         return AMEDIA_ERROR_UNSUPPORTED;
     }
 
@@ -148,7 +147,14 @@
 EXPORT
 bool AMediaExtractor_advance(AMediaExtractor *mData) {
     //ALOGV("advance");
-    return mData->mImpl->advance();
+    status_t err = mData->mImpl->advance();
+    if (err == ERROR_END_OF_STREAM) {
+        return false;
+    } else if (err != OK) {
+        ALOGE("sf error code: %d", err);
+        return false;
+    }
+    return true;
 }
 
 EXPORT
@@ -343,9 +349,9 @@
 
     const void *key;
     size_t keysize;
-    if (meta->findData(kKeyCryptoIV, &type, &key, &keysize)) {
+    if (meta->findData(kKeyCryptoKey, &type, &key, &keysize)) {
         if (keysize != 16) {
-            // IVs must be 16 bytes in length.
+            // Keys must be 16 bytes in length.
             return NULL;
         }
     }
diff --git a/radio/IRadio.cpp b/radio/IRadio.cpp
index 0881a91..e6dbdc3 100644
--- a/radio/IRadio.cpp
+++ b/radio/IRadio.cpp
@@ -16,6 +16,7 @@
 */
 
 #define LOG_TAG "IRadio"
+//#define LOG_NDEBUG 0
 #include <utils/Log.h>
 #include <utils/Errors.h>
 #include <binder/IMemory.h>
@@ -23,7 +24,7 @@
 #include <radio/IRadioService.h>
 #include <radio/IRadioClient.h>
 #include <system/radio.h>
-#include <system/radio_metadata.h>
+#include <system/RadioMetadataWrapper.h>
 
 namespace android {
 
@@ -303,12 +304,9 @@
         case GET_PROGRAM_INFORMATION: {
             CHECK_INTERFACE(IRadio, data, reply);
             struct radio_program_info info;
+            RadioMetadataWrapper metadataWrapper(&info.metadata);
 
-            status_t status = radio_metadata_allocate(&info.metadata, 0, 0);
-            if (status != NO_ERROR) {
-                return status;
-            }
-            status = getProgramInformation(&info);
+            status_t status = getProgramInformation(&info);
             reply->writeInt32(status);
             if (status == NO_ERROR) {
                 reply->write(&info, sizeof(struct radio_program_info));
@@ -321,7 +319,6 @@
                     reply->writeInt32(0);
                 }
             }
-            radio_metadata_deallocate(info.metadata);
             return NO_ERROR;
         }
         case HAS_CONTROL: {
diff --git a/radio/Radio.cpp b/radio/Radio.cpp
index e3554c2..3c04fb0 100644
--- a/radio/Radio.cpp
+++ b/radio/Radio.cpp
@@ -55,7 +55,7 @@
     sp<DeathNotifier>         gDeathNotifier;
 }; // namespace anonymous
 
-const sp<IRadioService>& Radio::getRadioService()
+const sp<IRadioService> Radio::getRadioService()
 {
     Mutex::Autolock _l(gLock);
     if (gRadioService.get() == 0) {
@@ -84,7 +84,7 @@
                             uint32_t *numModules)
 {
     ALOGV("listModules()");
-    const sp<IRadioService>& service = getRadioService();
+    const sp<IRadioService> service = getRadioService();
     if (service == 0) {
         return NO_INIT;
     }
@@ -98,7 +98,7 @@
 {
     ALOGV("attach()");
     sp<Radio> radio;
-    const sp<IRadioService>& service = getRadioService();
+    const sp<IRadioService> service = getRadioService();
     if (service == 0) {
         return radio;
     }
diff --git a/services/audioflinger/Android.mk b/services/audioflinger/Android.mk
index 35c1853..5c28e46 100644
--- a/services/audioflinger/Android.mk
+++ b/services/audioflinger/Android.mk
@@ -14,6 +14,8 @@
     liblog \
     libbinder
 
+LOCAL_CFLAGS := -Wall -Werror
+
 include $(BUILD_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index b7b669b..17cef11 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -132,6 +132,9 @@
     case AUDIO_FORMAT_AC3: return "ac-3";
     case AUDIO_FORMAT_E_AC3: return "e-ac-3";
     case AUDIO_FORMAT_IEC61937: return "iec61937";
+    case AUDIO_FORMAT_DTS: return "dts";
+    case AUDIO_FORMAT_DTS_HD: return "dts-hd";
+    case AUDIO_FORMAT_DOLBY_TRUEHD: return "dolby-truehd";
     default:
         break;
     }
@@ -576,7 +579,7 @@
         audio_format_t format,
         audio_channel_mask_t channelMask,
         size_t *frameCount,
-        IAudioFlinger::track_flags_t *flags,
+        audio_output_flags_t *flags,
         const sp<IMemory>& sharedBuffer,
         audio_io_handle_t output,
         pid_t pid,
@@ -660,7 +663,7 @@
                 sp<PlaybackThread> t = mPlaybackThreads.valueAt(i);
                 if (mPlaybackThreads.keyAt(i) != output) {
                     uint32_t sessions = t->hasAudioSession(lSessionId);
-                    if (sessions & PlaybackThread::EFFECT_SESSION) {
+                    if (sessions & ThreadBase::EFFECT_SESSION) {
                         effectThread = t.get();
                         break;
                     }
@@ -1101,14 +1104,20 @@
     // AUDIO_IO_HANDLE_NONE means the parameters are global to the audio hardware interface
     if (ioHandle == AUDIO_IO_HANDLE_NONE) {
         Mutex::Autolock _l(mLock);
-        status_t final_result = NO_ERROR;
+        // result will remain NO_INIT if no audio device is present
+        status_t final_result = NO_INIT;
         {
             AutoMutex lock(mHardwareLock);
             mHardwareStatus = AUDIO_HW_SET_PARAMETER;
             for (size_t i = 0; i < mAudioHwDevs.size(); i++) {
                 audio_hw_device_t *dev = mAudioHwDevs.valueAt(i)->hwDevice();
                 status_t result = dev->set_parameters(dev, keyValuePairs.string());
-                final_result = result ?: final_result;
+                // return success if at least one audio device accepts the parameters as not all
+                // HALs are requested to support all parameters. If no audio device supports the
+                // requested parameters, the last error is reported.
+                if (final_result != NO_ERROR) {
+                    final_result = result;
+                }
             }
             mHardwareStatus = AUDIO_HW_IDLE;
         }
@@ -1467,7 +1476,7 @@
         audio_channel_mask_t channelMask,
         const String16& opPackageName,
         size_t *frameCount,
-        IAudioFlinger::track_flags_t *flags,
+        audio_input_flags_t *flags,
         pid_t pid,
         pid_t tid,
         int clientUid,
@@ -1698,14 +1707,14 @@
 uint32_t AudioFlinger::getPrimaryOutputSamplingRate()
 {
     Mutex::Autolock _l(mLock);
-    PlaybackThread *thread = primaryPlaybackThread_l();
+    PlaybackThread *thread = fastPlaybackThread_l();
     return thread != NULL ? thread->sampleRate() : 0;
 }
 
 size_t AudioFlinger::getPrimaryOutputFrameCount()
 {
     Mutex::Autolock _l(mLock);
-    PlaybackThread *thread = primaryPlaybackThread_l();
+    PlaybackThread *thread = fastPlaybackThread_l();
     return thread != NULL ? thread->frameCountHAL() : 0;
 }
 
@@ -1766,7 +1775,7 @@
     for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
         sp<PlaybackThread> thread = mPlaybackThreads.valueAt(i);
         uint32_t sessions = thread->hasAudioSession(sessionId);
-        if (sessions & PlaybackThread::TRACK_SESSION) {
+        if (sessions & ThreadBase::TRACK_SESSION) {
             AudioParameter param = AudioParameter();
             param.addInt(String8(AUDIO_PARAMETER_STREAM_HW_AV_SYNC), value);
             thread->setParameters(param.toString());
@@ -2199,7 +2208,7 @@
         }
 #endif
 
-        AudioStreamIn *inputStream = new AudioStreamIn(inHwDev, inStream);
+        AudioStreamIn *inputStream = new AudioStreamIn(inHwDev, inStream, flags);
 
         // Start record thread
         // RecordThread requires both input and output device indication to forward to audio
@@ -2532,6 +2541,25 @@
     return thread->outDevice();
 }
 
+AudioFlinger::PlaybackThread *AudioFlinger::fastPlaybackThread_l() const
+{
+    size_t minFrameCount = 0;
+    PlaybackThread *minThread = NULL;
+    for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
+        PlaybackThread *thread = mPlaybackThreads.valueAt(i).get();
+        if (!thread->isDuplicating()) {
+            size_t frameCount = thread->frameCountHAL();
+            if (frameCount != 0 && (minFrameCount == 0 || frameCount < minFrameCount ||
+                    (frameCount == minFrameCount && thread->hasFastMixer() &&
+                    /*minThread != NULL &&*/ !minThread->hasFastMixer()))) {
+                minFrameCount = frameCount;
+                minThread = thread;
+            }
+        }
+    }
+    return minThread;
+}
+
 sp<AudioFlinger::SyncEvent> AudioFlinger::createSyncEvent(AudioSystem::sync_event_t type,
                                     audio_session_t triggerSession,
                                     audio_session_t listenerSession,
@@ -2824,14 +2852,11 @@
         return INVALID_OPERATION;
     }
 
-    // Check whether the destination thread has a channel count of FCC_2, which is
-    // currently required for (most) effects. Prevent moving the effect chain here rather
-    // than disabling the addEffect_l() call in dstThread below.
-    if ((dstThread->type() == ThreadBase::MIXER || dstThread->isDuplicating()) &&
-            dstThread->mChannelCount != FCC_2) {
+    // Check whether the destination thread and all effects in the chain are compatible
+    if (!chain->isCompatibleWithThread_l(dstThread)) {
         ALOGW("moveEffectChain_l() effect chain failed because"
-                " destination thread %p channel count(%u) != %u",
-                dstThread, dstThread->mChannelCount, FCC_2);
+                " destination thread %p is not compatible with effects in the chain",
+                dstThread);
         return INVALID_OPERATION;
     }
 
@@ -3039,7 +3064,7 @@
             }
         } else {
             if (fd >= 0) {
-                dprintf(fd, "unable to rotate tees in %.*s: %s\n", teePathLen, teePath,
+                dprintf(fd, "unable to rotate tees in %.*s: %s\n", (int) teePathLen, teePath,
                         strerror(errno));
             }
         }
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 10762e6..c4b89f8 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -104,7 +104,7 @@
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
                                 size_t *pFrameCount,
-                                IAudioFlinger::track_flags_t *flags,
+                                audio_output_flags_t *flags,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_io_handle_t output,
                                 pid_t pid,
@@ -120,7 +120,7 @@
                                 audio_channel_mask_t channelMask,
                                 const String16& opPackageName,
                                 size_t *pFrameCount,
-                                IAudioFlinger::track_flags_t *flags,
+                                audio_input_flags_t *flags,
                                 pid_t pid,
                                 pid_t tid,
                                 int clientUid,
@@ -575,6 +575,9 @@
               PlaybackThread *primaryPlaybackThread_l() const;
               audio_devices_t primaryOutputDevice_l() const;
 
+              // return the playback thread with smallest HAL buffer size, and prefer fast
+              PlaybackThread *fastPlaybackThread_l() const;
+
               sp<PlaybackThread> getEffectThread_l(audio_session_t sessionId, int EffectId);
 
 
@@ -609,11 +612,12 @@
     struct AudioStreamIn {
         AudioHwDevice* const audioHwDev;
         audio_stream_in_t* const stream;
+        audio_input_flags_t flags;
 
         audio_hw_device_t* hwDev() const { return audioHwDev->hwDevice(); }
 
-        AudioStreamIn(AudioHwDevice *dev, audio_stream_in_t *in) :
-            audioHwDev(dev), stream(in) {}
+        AudioStreamIn(AudioHwDevice *dev, audio_stream_in_t *in, audio_input_flags_t flags) :
+            audioHwDev(dev), stream(in), flags(flags) {}
     };
 
     // for mAudioSessionRefs only
diff --git a/services/audioflinger/AudioMixer.cpp b/services/audioflinger/AudioMixer.cpp
index d8f2556..945f4b3 100644
--- a/services/audioflinger/AudioMixer.cpp
+++ b/services/audioflinger/AudioMixer.cpp
@@ -430,7 +430,7 @@
 {
     ALOGV("AudioMixer::deleteTrackName(%d)", name);
     name -= TRACK0;
-    ALOG_ASSERT(uint32_t(name) < MAX_NUM_TRACKS, "bad track name %d", name);
+    LOG_ALWAYS_FATAL_IF(name < 0 || name >= (int)MAX_NUM_TRACKS, "bad track name %d", name);
     ALOGV("deleteTrackName(%d)", name);
     track_t& track(mState.tracks[ name ]);
     if (track.enabled) {
@@ -1611,8 +1611,13 @@
         // in == NULL can happen if the track was flushed just after having
         // been enabled for mixing.
         if (in == NULL || (((uintptr_t)in) & 3)) {
-            memset(out, 0, numFrames
-                    * t.mMixerChannelCount * audio_bytes_per_sample(t.mMixerFormat));
+            if ( AUDIO_FORMAT_PCM_FLOAT == t.mMixerFormat ) {
+                 memset((char*)fout, 0, numFrames
+                         * t.mMixerChannelCount * audio_bytes_per_sample(t.mMixerFormat));
+            } else {
+                 memset((char*)out, 0, numFrames
+                         * t.mMixerChannelCount * audio_bytes_per_sample(t.mMixerFormat));
+            }
             ALOGE_IF((((uintptr_t)in) & 3),
                     "process__OneTrack16BitsStereoNoResampling: misaligned buffer"
                     " %p track %d, channels %d, needs %08x, volume %08x vfl %f vfr %f",
diff --git a/services/audioflinger/AudioResampler.cpp b/services/audioflinger/AudioResampler.cpp
index 4f8b413..8b7259d 100644
--- a/services/audioflinger/AudioResampler.cpp
+++ b/services/audioflinger/AudioResampler.cpp
@@ -17,11 +17,14 @@
 #define LOG_TAG "AudioResampler"
 //#define LOG_NDEBUG 0
 
+#include <pthread.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <sys/types.h>
-#include <cutils/log.h>
+
 #include <cutils/properties.h>
+#include <log/log.h>
+
 #include <audio_utils/primitives.h>
 #include "AudioResampler.h"
 #include "AudioResamplerSinc.h"
diff --git a/services/audioflinger/AudioResamplerCubic.cpp b/services/audioflinger/AudioResamplerCubic.cpp
index 9c3c7cb..9fb6699 100644
--- a/services/audioflinger/AudioResamplerCubic.cpp
+++ b/services/audioflinger/AudioResamplerCubic.cpp
@@ -19,7 +19,8 @@
 #include <stdint.h>
 #include <string.h>
 #include <sys/types.h>
-#include <cutils/log.h>
+
+#include <log/log.h>
 
 #include "AudioResampler.h"
 #include "AudioResamplerCubic.h"
diff --git a/services/audioflinger/AudioResamplerCubic.h b/services/audioflinger/AudioResamplerCubic.h
index 4b45b0b..f218fd9 100644
--- a/services/audioflinger/AudioResamplerCubic.h
+++ b/services/audioflinger/AudioResamplerCubic.h
@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 #include <sys/types.h>
-#include <cutils/log.h>
+#include <android/log.h>
 
 #include "AudioResampler.h"
 
diff --git a/services/audioflinger/AudioResamplerDyn.cpp b/services/audioflinger/AudioResamplerDyn.cpp
index b7ca5d9..213cd1a 100644
--- a/services/audioflinger/AudioResamplerDyn.cpp
+++ b/services/audioflinger/AudioResamplerDyn.cpp
@@ -29,9 +29,10 @@
 #include <utils/Log.h>
 #include <audio_utils/primitives.h>
 
-#include "AudioResamplerFirOps.h" // USE_NEON and USE_INLINE_ASSEMBLY defined here
+#include "AudioResamplerFirOps.h" // USE_NEON, USE_SSE and USE_INLINE_ASSEMBLY defined here
 #include "AudioResamplerFirProcess.h"
 #include "AudioResamplerFirProcessNeon.h"
+#include "AudioResamplerFirProcessSSE.h"
 #include "AudioResamplerFirGen.h" // requires math.h
 #include "AudioResamplerDyn.h"
 
diff --git a/services/audioflinger/AudioResamplerDyn.h b/services/audioflinger/AudioResamplerDyn.h
index 3b1c381..f8b8fa1 100644
--- a/services/audioflinger/AudioResamplerDyn.h
+++ b/services/audioflinger/AudioResamplerDyn.h
@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 #include <sys/types.h>
-#include <cutils/log.h>
+#include <android/log.h>
 
 #include "AudioResampler.h"
 
diff --git a/services/audioflinger/AudioResamplerFirOps.h b/services/audioflinger/AudioResamplerFirOps.h
index 2a26496..776903c 100644
--- a/services/audioflinger/AudioResamplerFirOps.h
+++ b/services/audioflinger/AudioResamplerFirOps.h
@@ -36,6 +36,13 @@
 #include <arm_neon.h>
 #endif
 
+#if defined(__SSSE3__)  // Should be supported in x86 ABI for both 32 & 64-bit.
+#define USE_SSE (true)
+#include <tmmintrin.h>
+#else
+#define USE_SSE (false)
+#endif
+
 template<typename T, typename U>
 struct is_same
 {
diff --git a/services/audioflinger/AudioResamplerFirProcessSSE.h b/services/audioflinger/AudioResamplerFirProcessSSE.h
new file mode 100644
index 0000000..63ed052
--- /dev/null
+++ b/services/audioflinger/AudioResamplerFirProcessSSE.h
@@ -0,0 +1,215 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_AUDIO_RESAMPLER_FIR_PROCESS_SSE_H
+#define ANDROID_AUDIO_RESAMPLER_FIR_PROCESS_SSE_H
+
+namespace android {
+
+// depends on AudioResamplerFirOps.h, AudioResamplerFirProcess.h
+
+#if USE_SSE
+
+#define TO_STRING2(x) #x
+#define TO_STRING(x) TO_STRING2(x)
+// uncomment to print GCC version, may be relevant for intrinsic optimizations
+/* #pragma message ("GCC version: " TO_STRING(__GNUC__) \
+        "." TO_STRING(__GNUC_MINOR__) \
+        "." TO_STRING(__GNUC_PATCHLEVEL__)) */
+
+//
+// SSEx specializations are enabled for Process() and ProcessL() in AudioResamplerFirProcess.h
+//
+
+template <int CHANNELS, int STRIDE, bool FIXED>
+static inline void ProcessSSEIntrinsic(float* out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* sP,
+        const float* sN,
+        const float* volumeLR,
+        float lerpP,
+        const float* coefsP1,
+        const float* coefsN1)
+{
+    ALOG_ASSERT(count > 0 && (count & 7) == 0); // multiple of 8
+    COMPILE_TIME_ASSERT_FUNCTION_SCOPE(CHANNELS == 1 || CHANNELS == 2);
+
+    sP -= CHANNELS*(4-1);   // adjust sP for a loop iteration of four
+
+    __m128 interp;
+    if (!FIXED) {
+        interp = _mm_set1_ps(lerpP);
+    }
+
+    __m128 accL, accR;
+    accL = _mm_setzero_ps();
+    if (CHANNELS == 2) {
+        accR = _mm_setzero_ps();
+    }
+
+    do {
+        __m128 posCoef = _mm_load_ps(coefsP);
+        __m128 negCoef = _mm_load_ps(coefsN);
+        coefsP += 4;
+        coefsN += 4;
+
+        if (!FIXED) { // interpolate
+            __m128 posCoef1 = _mm_load_ps(coefsP1);
+            __m128 negCoef1 = _mm_load_ps(coefsN1);
+            coefsP1 += 4;
+            coefsN1 += 4;
+
+            // Calculate the final coefficient for interpolation
+            // posCoef = interp * (posCoef1 - posCoef) + posCoef
+            // negCoef = interp * (negCoef - negCoef1) + negCoef1
+            posCoef1 = _mm_sub_ps(posCoef1, posCoef);
+            negCoef = _mm_sub_ps(negCoef, negCoef1);
+
+            posCoef1 = _mm_mul_ps(posCoef1, interp);
+            negCoef = _mm_mul_ps(negCoef, interp);
+
+            posCoef = _mm_add_ps(posCoef1, posCoef);
+            negCoef = _mm_add_ps(negCoef, negCoef1);
+        }
+        switch (CHANNELS) {
+        case 1: {
+            __m128 posSamp = _mm_loadu_ps(sP);
+            __m128 negSamp = _mm_loadu_ps(sN);
+            sP -= 4;
+            sN += 4;
+
+            posSamp = _mm_shuffle_ps(posSamp, posSamp, 0x1B);
+            posSamp = _mm_mul_ps(posSamp, posCoef);
+            negSamp = _mm_mul_ps(negSamp, negCoef);
+
+            accL = _mm_add_ps(accL, posSamp);
+            accL = _mm_add_ps(accL, negSamp);
+        } break;
+        case 2: {
+            __m128 posSamp0 = _mm_loadu_ps(sP);
+            __m128 posSamp1 = _mm_loadu_ps(sP+4);
+            __m128 negSamp0 = _mm_loadu_ps(sN);
+            __m128 negSamp1 = _mm_loadu_ps(sN+4);
+            sP -= 8;
+            sN += 8;
+
+            // deinterleave everything and reverse the positives
+            __m128 posSampL = _mm_shuffle_ps(posSamp1, posSamp0, 0x22);
+            __m128 posSampR = _mm_shuffle_ps(posSamp1, posSamp0, 0x77);
+            __m128 negSampL = _mm_shuffle_ps(negSamp0, negSamp1, 0x88);
+            __m128 negSampR = _mm_shuffle_ps(negSamp0, negSamp1, 0xDD);
+
+            posSampL = _mm_mul_ps(posSampL, posCoef);
+            posSampR = _mm_mul_ps(posSampR, posCoef);
+            negSampL = _mm_mul_ps(negSampL, negCoef);
+            negSampR = _mm_mul_ps(negSampR, negCoef);
+
+            accL = _mm_add_ps(accL, posSampL);
+            accR = _mm_add_ps(accR, posSampR);
+            accL = _mm_add_ps(accL, negSampL);
+            accR = _mm_add_ps(accR, negSampR);
+        } break;
+        }
+    } while (count -= 4);
+
+    // multiply by volume and save
+    __m128 vLR = _mm_setzero_ps();
+    __m128 outSamp;
+    vLR = _mm_loadl_pi(vLR, reinterpret_cast<const __m64*>(volumeLR));
+    outSamp = _mm_loadl_pi(vLR, reinterpret_cast<__m64*>(out));
+
+    // combine and funnel down accumulator
+    __m128 outAccum = _mm_setzero_ps();
+    if (CHANNELS == 1) {
+        // duplicate accL to both L and R
+        outAccum = _mm_add_ps(accL, _mm_movehl_ps(accL, accL));
+        outAccum = _mm_add_ps(outAccum, _mm_shuffle_ps(outAccum, outAccum, 0x11));
+    } else if (CHANNELS == 2) {
+        // accR contains R, fold in
+        outAccum = _mm_hadd_ps(accL, accR);
+        outAccum = _mm_hadd_ps(outAccum, outAccum);
+    }
+
+    outAccum = _mm_mul_ps(outAccum, vLR);
+    outSamp = _mm_add_ps(outSamp, outAccum);
+    _mm_storel_pi(reinterpret_cast<__m64*>(out), outSamp);
+}
+
+template<>
+inline void ProcessL<1, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* sP,
+        const float* sN,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<1, 16, true>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            0 /*lerpP*/, NULL /*coefsP1*/, NULL /*coefsN1*/);
+}
+
+template<>
+inline void ProcessL<2, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* sP,
+        const float* sN,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<2, 16, true>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            0 /*lerpP*/, NULL /*coefsP1*/, NULL /*coefsN1*/);
+}
+
+template<>
+inline void Process<1, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* coefsP1,
+        const float* coefsN1,
+        const float* sP,
+        const float* sN,
+        float lerpP,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<1, 16, false>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            lerpP, coefsP1, coefsN1);
+}
+
+template<>
+inline void Process<2, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* coefsP1,
+        const float* coefsN1,
+        const float* sP,
+        const float* sN,
+        float lerpP,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<2, 16, false>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            lerpP, coefsP1, coefsN1);
+}
+
+#endif //USE_SSE
+
+} // namespace android
+
+#endif /*ANDROID_AUDIO_RESAMPLER_FIR_PROCESS_SSE_H*/
diff --git a/services/audioflinger/AudioResamplerSinc.h b/services/audioflinger/AudioResamplerSinc.h
index 0fbeac8..df8b45a 100644
--- a/services/audioflinger/AudioResamplerSinc.h
+++ b/services/audioflinger/AudioResamplerSinc.h
@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 #include <sys/types.h>
-#include <cutils/log.h>
+#include <android/log.h>
 
 #include "AudioResampler.h"
 
diff --git a/services/audioflinger/BufferProviders.cpp b/services/audioflinger/BufferProviders.cpp
index 2ca2cac..7b6dfcb 100644
--- a/services/audioflinger/BufferProviders.cpp
+++ b/services/audioflinger/BufferProviders.cpp
@@ -474,18 +474,18 @@
     ALOGV("processFrames(%zu %zu)  remaining(%zu)", *dstFrames, *srcFrames, mRemaining);
     // Note dstFrames is the required number of frames.
 
-    // Ensure consumption from src is as expected.
-    //TODO: add logic to track "very accurate" consumption related to speed, original sampling
-    //rate, actual frames processed.
-    const size_t targetSrc = *dstFrames * mPlaybackRate.mSpeed;
-    if (*srcFrames < targetSrc) { // limit dst frames to that possible
-        *dstFrames = *srcFrames / mPlaybackRate.mSpeed;
-    } else if (*srcFrames > targetSrc + 1) {
-        *srcFrames = targetSrc + 1;
-    }
-
     if (!mAudioPlaybackRateValid) {
         //fallback mode
+        // Ensure consumption from src is as expected.
+        // TODO: add logic to track "very accurate" consumption related to speed, original sampling
+        // rate, actual frames processed.
+
+        const size_t targetSrc = *dstFrames * mPlaybackRate.mSpeed;
+        if (*srcFrames < targetSrc) { // limit dst frames to that possible
+            *dstFrames = *srcFrames / mPlaybackRate.mSpeed;
+        } else if (*srcFrames > targetSrc + 1) {
+            *srcFrames = targetSrc + 1;
+        }
         if (*dstFrames > 0) {
             switch(mPlaybackRate.mFallbackMode) {
             case AUDIO_TIMESTRETCH_FALLBACK_CUT_REPEAT:
diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index 53b0ff1..20d2896 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -216,9 +216,10 @@
     return mHandles.size();
 }
 
-void AudioFlinger::EffectModule::updateState() {
+bool AudioFlinger::EffectModule::updateState() {
     Mutex::Autolock _l(mLock);
 
+    bool started = false;
     switch (mState) {
     case RESTART:
         reset_l();
@@ -233,6 +234,7 @@
         }
         if (start_l() == NO_ERROR) {
             mState = ACTIVE;
+            started = true;
         } else {
             mState = IDLE;
         }
@@ -256,6 +258,8 @@
     default: //IDLE , ACTIVE, DESTROYED
         break;
     }
+
+    return started;
 }
 
 void AudioFlinger::EffectModule::process()
@@ -275,12 +279,29 @@
                                         mConfig.inputCfg.buffer.s32,
                                         mConfig.inputCfg.buffer.frameCount/2);
         }
+        int ret;
+        if (isProcessImplemented()) {
+            // do the actual processing in the effect engine
+            ret = (*mEffectInterface)->process(mEffectInterface,
+                                                   &mConfig.inputCfg.buffer,
+                                                   &mConfig.outputCfg.buffer);
+        } else {
+            if (mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) {
+                size_t frameCnt = mConfig.inputCfg.buffer.frameCount * FCC_2;  //always stereo here
+                int16_t *in = mConfig.inputCfg.buffer.s16;
+                int16_t *out = mConfig.outputCfg.buffer.s16;
 
-        // do the actual processing in the effect engine
-        int ret = (*mEffectInterface)->process(mEffectInterface,
-                                               &mConfig.inputCfg.buffer,
-                                               &mConfig.outputCfg.buffer);
-
+                if (mConfig.outputCfg.accessMode == EFFECT_BUFFER_ACCESS_ACCUMULATE) {
+                    for (size_t i = 0; i < frameCnt; i++) {
+                        out[i] = clamp16((int32_t)out[i] + (int32_t)in[i]);
+                    }
+                } else {
+                    memcpy(mConfig.outputCfg.buffer.raw, mConfig.inputCfg.buffer.raw,
+                           frameCnt * sizeof(int16_t));
+                }
+            }
+            ret = -ENODATA;
+        }
         // force transition to IDLE state when engine is ready
         if (mState == STOPPED && ret == -ENODATA) {
             mDisableWaitCnt = 1;
@@ -297,7 +318,7 @@
         // accumulate input onto output
         sp<EffectChain> chain = mChain.promote();
         if (chain != 0 && chain->activeTrackCnt() != 0) {
-            size_t frameCnt = mConfig.inputCfg.buffer.frameCount * 2;  //always stereo here
+            size_t frameCnt = mConfig.inputCfg.buffer.frameCount * FCC_2;  //always stereo here
             int16_t *in = mConfig.inputCfg.buffer.s16;
             int16_t *out = mConfig.outputCfg.buffer.s16;
             for (size_t i = 0; i < frameCnt; i++) {
@@ -464,10 +485,22 @@
     }
 }
 
+// start() must be called with PlaybackThread::mLock or EffectChain::mLock held
 status_t AudioFlinger::EffectModule::start()
 {
-    Mutex::Autolock _l(mLock);
-    return start_l();
+    sp<EffectChain> chain;
+    status_t status;
+    {
+        Mutex::Autolock _l(mLock);
+        status = start_l();
+        if (status == NO_ERROR) {
+            chain = mChain.promote();
+        }
+    }
+    if (chain != 0) {
+        chain->resetVolume_l();
+    }
+    return status;
 }
 
 status_t AudioFlinger::EffectModule::start_l()
@@ -491,10 +524,6 @@
     }
     if (status == 0) {
         addEffectToHal_l();
-        sp<EffectChain> chain = mChain.promote();
-        if (chain != 0) {
-            chain->forceVolume();
-        }
     }
     return status;
 }
@@ -545,6 +574,13 @@
     return NO_ERROR;
 }
 
+// round up delta valid if value and divisor are positive.
+template <typename T>
+static T roundUpDelta(const T &value, const T &divisor) {
+    T remainder = value % divisor;
+    return remainder == 0 ? 0 : divisor - remainder;
+}
+
 status_t AudioFlinger::EffectModule::command(uint32_t cmdCode,
                                              uint32_t cmdSize,
                                              void *pCmdData,
@@ -566,6 +602,22 @@
         android_errorWriteLog(0x534e4554, "29251553");
         return -EINVAL;
     }
+    if ((cmdCode == EFFECT_CMD_SET_PARAM
+            || cmdCode == EFFECT_CMD_SET_PARAM_DEFERRED) &&  // DEFERRED not generally used
+        (sizeof(effect_param_t) > cmdSize
+            || ((effect_param_t *)pCmdData)->psize > cmdSize
+                                                     - sizeof(effect_param_t)
+            || ((effect_param_t *)pCmdData)->vsize > cmdSize
+                                                     - sizeof(effect_param_t)
+                                                     - ((effect_param_t *)pCmdData)->psize
+            || roundUpDelta(((effect_param_t *)pCmdData)->psize, (uint32_t)sizeof(int)) >
+                                                     cmdSize
+                                                     - sizeof(effect_param_t)
+                                                     - ((effect_param_t *)pCmdData)->psize
+                                                     - ((effect_param_t *)pCmdData)->vsize)) {
+        android_errorWriteLog(0x534e4554, "30204301");
+        return -EINVAL;
+    }
     status_t status = (*mEffectInterface)->command(mEffectInterface,
                                                    cmdCode,
                                                    cmdSize,
@@ -1351,7 +1403,7 @@
                                         audio_session_t sessionId)
     : mThread(thread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), mTailBufferCount(0),
       mOwnInBuffer(false), mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX),
-      mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX), mForceVolume(false)
+      mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX)
 {
     mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC);
     if (thread == NULL) {
@@ -1473,8 +1525,12 @@
             mEffects[i]->process();
         }
     }
+    bool doResetVolume = false;
     for (size_t i = 0; i < size; i++) {
-        mEffects[i]->updateState();
+        doResetVolume = mEffects[i]->updateState() || doResetVolume;
+    }
+    if (doResetVolume) {
+        resetVolume_l();
     }
 }
 
@@ -1655,8 +1711,8 @@
     }
 }
 
-// setVolume_l() must be called with PlaybackThread::mLock held
-bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right)
+// setVolume_l() must be called with PlaybackThread::mLock or EffectChain::mLock held
+bool AudioFlinger::EffectChain::setVolume_l(uint32_t *left, uint32_t *right, bool force)
 {
     uint32_t newLeft = *left;
     uint32_t newRight = *right;
@@ -1674,7 +1730,7 @@
         }
     }
 
-    if (!isVolumeForced() && ctrlIdx == mVolumeCtrlIdx &&
+    if (!force && ctrlIdx == mVolumeCtrlIdx &&
             *left == mLeftVolume && *right == mRightVolume) {
         if (hasControl) {
             *left = mNewLeftVolume;
@@ -1716,6 +1772,16 @@
     return hasControl;
 }
 
+// resetVolume_l() must be called with PlaybackThread::mLock or EffectChain::mLock held
+void AudioFlinger::EffectChain::resetVolume_l()
+{
+    if ((mLeftVolume != UINT_MAX) && (mRightVolume != UINT_MAX)) {
+        uint32_t left = mLeftVolume;
+        uint32_t right = mRightVolume;
+        (void)setVolume_l(&left, &right, true);
+    }
+}
+
 void AudioFlinger::EffectChain::syncHalEffectsState()
 {
     Mutex::Autolock _l(mLock);
@@ -1968,4 +2034,61 @@
     }
 }
 
+void AudioFlinger::EffectChain::checkOutputFlagCompatibility(audio_output_flags_t *flags) const
+{
+    if ((*flags & AUDIO_OUTPUT_FLAG_RAW) != 0 && !isRawCompatible()) {
+        *flags = (audio_output_flags_t)(*flags & ~AUDIO_OUTPUT_FLAG_RAW);
+    }
+    if ((*flags & AUDIO_OUTPUT_FLAG_FAST) != 0 && !isFastCompatible()) {
+        *flags = (audio_output_flags_t)(*flags & ~AUDIO_OUTPUT_FLAG_FAST);
+    }
+}
+
+void AudioFlinger::EffectChain::checkInputFlagCompatibility(audio_input_flags_t *flags) const
+{
+    if ((*flags & AUDIO_INPUT_FLAG_RAW) != 0 && !isRawCompatible()) {
+        *flags = (audio_input_flags_t)(*flags & ~AUDIO_INPUT_FLAG_RAW);
+    }
+    if ((*flags & AUDIO_INPUT_FLAG_FAST) != 0 && !isFastCompatible()) {
+        *flags = (audio_input_flags_t)(*flags & ~AUDIO_INPUT_FLAG_FAST);
+    }
+}
+
+bool AudioFlinger::EffectChain::isRawCompatible() const
+{
+    Mutex::Autolock _l(mLock);
+    for (const auto &effect : mEffects) {
+        if (effect->isProcessImplemented()) {
+            return false;
+        }
+    }
+    // Allow effects without processing.
+    return true;
+}
+
+bool AudioFlinger::EffectChain::isFastCompatible() const
+{
+    Mutex::Autolock _l(mLock);
+    for (const auto &effect : mEffects) {
+        if (effect->isProcessImplemented()
+                && effect->isImplementationSoftware()) {
+            return false;
+        }
+    }
+    // Allow effects without processing or hw accelerated effects.
+    return true;
+}
+
+// isCompatibleWithThread_l() must be called with thread->mLock held
+bool AudioFlinger::EffectChain::isCompatibleWithThread_l(const sp<ThreadBase>& thread) const
+{
+    Mutex::Autolock _l(mLock);
+    for (size_t i = 0; i < mEffects.size(); i++) {
+        if (thread->checkEffectCompatibility_l(&(mEffects[i]->desc()), mSessionId) != NO_ERROR) {
+            return false;
+        }
+    }
+    return true;
+}
+
 } // namespace android
diff --git a/services/audioflinger/Effects.h b/services/audioflinger/Effects.h
index 37be54c..96cb607 100644
--- a/services/audioflinger/Effects.h
+++ b/services/audioflinger/Effects.h
@@ -60,7 +60,7 @@
 
     int         id() const { return mId; }
     void process();
-    void updateState();
+    bool updateState();
     status_t command(uint32_t cmdCode,
                      uint32_t cmdSize,
                      void *pCmdData,
@@ -117,6 +117,10 @@
     void             unlock() { mLock.unlock(); }
     bool             isOffloadable() const
                         { return (mDescriptor.flags & EFFECT_FLAG_OFFLOAD_SUPPORTED) != 0; }
+    bool             isImplementationSoftware() const
+                        { return (mDescriptor.flags & EFFECT_FLAG_HW_ACC_MASK) == 0; }
+    bool             isProcessImplemented() const
+                        { return (mDescriptor.flags & EFFECT_FLAG_NO_PROCESS) == 0; }
     status_t         setOffloaded(bool offloaded, audio_io_handle_t io);
     bool             isOffloaded() const;
     void             addEffectToHal_l();
@@ -275,7 +279,8 @@
     sp<EffectModule> getEffectFromId_l(int id);
     sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type);
     // FIXME use float to improve the dynamic range
-    bool setVolume_l(uint32_t *left, uint32_t *right);
+    bool setVolume_l(uint32_t *left, uint32_t *right, bool force = false);
+    void resetVolume_l();
     void setDevice_l(audio_devices_t device);
     void setMode_l(audio_mode_t mode);
     void setAudioSource_l(audio_source_t source);
@@ -321,15 +326,23 @@
     // At least one non offloadable effect in the chain is enabled
     bool isNonOffloadableEnabled();
 
-    // use release_cas because we don't care about the observed value, just want to make sure the
-    // new value is observable.
-    void forceVolume() { android_atomic_release_cas(false, true, &mForceVolume); }
-    // use acquire_cas because we are interested in the observed value and
-    // we are the only observers.
-    bool isVolumeForced() { return (android_atomic_acquire_cas(true, false, &mForceVolume) == 0); }
-
     void syncHalEffectsState();
 
+    // flags is an ORed set of audio_output_flags_t which is updated on return.
+    void checkOutputFlagCompatibility(audio_output_flags_t *flags) const;
+
+    // flags is an ORed set of audio_input_flags_t which is updated on return.
+    void checkInputFlagCompatibility(audio_input_flags_t *flags) const;
+
+    // Is this EffectChain compatible with the RAW audio flag.
+    bool isRawCompatible() const;
+
+    // Is this EffectChain compatible with the FAST audio flag.
+    bool isFastCompatible() const;
+
+    // isCompatibleWithThread_l() must be called with thread->mLock held
+    bool isCompatibleWithThread_l(const sp<ThreadBase>& thread) const;
+
     void dump(int fd, const Vector<String16>& args);
 
 protected:
@@ -361,30 +374,29 @@
 
     void setThread(const sp<ThreadBase>& thread);
 
-    wp<ThreadBase> mThread;     // parent mixer thread
-    Mutex mLock;                // mutex protecting effect list
-    Vector< sp<EffectModule> > mEffects; // list of effect modules
-    audio_session_t mSessionId; // audio session ID
-    int16_t *mInBuffer;         // chain input buffer
-    int16_t *mOutBuffer;        // chain output buffer
+             wp<ThreadBase> mThread;     // parent mixer thread
+    mutable  Mutex mLock;        // mutex protecting effect list
+             Vector< sp<EffectModule> > mEffects; // list of effect modules
+             audio_session_t mSessionId; // audio session ID
+             int16_t *mInBuffer;         // chain input buffer
+             int16_t *mOutBuffer;        // chain output buffer
 
     // 'volatile' here means these are accessed with atomic operations instead of mutex
     volatile int32_t mActiveTrackCnt;    // number of active tracks connected
     volatile int32_t mTrackCnt;          // number of tracks connected
 
-    int32_t mTailBufferCount;   // current effect tail buffer count
-    int32_t mMaxTailBuffers;    // maximum effect tail buffers
-    bool mOwnInBuffer;          // true if the chain owns its input buffer
-    int mVolumeCtrlIdx;         // index of insert effect having control over volume
-    uint32_t mLeftVolume;       // previous volume on left channel
-    uint32_t mRightVolume;      // previous volume on right channel
-    uint32_t mNewLeftVolume;       // new volume on left channel
-    uint32_t mNewRightVolume;      // new volume on right channel
-    uint32_t mStrategy; // strategy for this effect chain
-    // mSuspendedEffects lists all effects currently suspended in the chain.
-    // Use effect type UUID timelow field as key. There is no real risk of identical
-    // timeLow fields among effect type UUIDs.
-    // Updated by updateSuspendedSessions_l() only.
-    KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects;
-    volatile int32_t mForceVolume; // force next volume command because a new effect was enabled
+             int32_t mTailBufferCount;   // current effect tail buffer count
+             int32_t mMaxTailBuffers;    // maximum effect tail buffers
+             bool mOwnInBuffer;          // true if the chain owns its input buffer
+             int mVolumeCtrlIdx;         // index of insert effect having control over volume
+             uint32_t mLeftVolume;       // previous volume on left channel
+             uint32_t mRightVolume;      // previous volume on right channel
+             uint32_t mNewLeftVolume;       // new volume on left channel
+             uint32_t mNewRightVolume;      // new volume on right channel
+             uint32_t mStrategy; // strategy for this effect chain
+             // mSuspendedEffects lists all effects currently suspended in the chain.
+             // Use effect type UUID timelow field as key. There is no real risk of identical
+             // timeLow fields among effect type UUIDs.
+             // Updated by updateSuspendedSessions_l() only.
+             KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects;
 };
diff --git a/services/audioflinger/FastCapture.cpp b/services/audioflinger/FastCapture.cpp
index d202169..873a9ad 100644
--- a/services/audioflinger/FastCapture.cpp
+++ b/services/audioflinger/FastCapture.cpp
@@ -31,7 +31,7 @@
 
 /*static*/ const FastCaptureState FastCapture::sInitial;
 
-FastCapture::FastCapture() : FastThread(),
+FastCapture::FastCapture() : FastThread("cycleC_ms", "loadC_us"),
     mInputSource(NULL), mInputSourceGen(0), mPipeSink(NULL), mPipeSinkGen(0),
     mReadBuffer(NULL), mReadBufferState(-1), mFormat(Format_Invalid), mSampleRate(0),
     // mDummyDumpState
diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index e41d7bc..93f7ce5 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -46,7 +46,7 @@
 
 /*static*/ const FastMixerState FastMixer::sInitial;
 
-FastMixer::FastMixer() : FastThread(),
+FastMixer::FastMixer() : FastThread("cycle_ms", "load_us"),
     // mFastTrackNames
     // mGenerations
     mOutputSink(NULL),
diff --git a/services/audioflinger/FastThread.cpp b/services/audioflinger/FastThread.cpp
index 5ca579b..dca7bf9 100644
--- a/services/audioflinger/FastThread.cpp
+++ b/services/audioflinger/FastThread.cpp
@@ -35,7 +35,7 @@
 
 namespace android {
 
-FastThread::FastThread() : Thread(false /*canCallJava*/),
+FastThread::FastThread(const char *cycleMs, const char *loadUs) : Thread(false /*canCallJava*/),
     // re-initialized to &sInitial by subclass constructor
     mPrevious(NULL), mCurrent(NULL),
     /* mOldTs({0, 0}), */
@@ -72,11 +72,15 @@
     frameCount(0),
 #endif
     mAttemptedWrite(false)
+    // mCycleMs(cycleMs)
+    // mLoadUs(loadUs)
 {
     mOldTs.tv_sec = 0;
     mOldTs.tv_nsec = 0;
     mMeasuredWarmupTs.tv_sec = 0;
     mMeasuredWarmupTs.tv_nsec = 0;
+    strlcpy(mCycleMs, cycleMs, sizeof(mCycleMs));
+    strlcpy(mLoadUs, loadUs, sizeof(mLoadUs));
 }
 
 FastThread::~FastThread()
@@ -163,7 +167,7 @@
                 if (old <= 0) {
                     syscall(__NR_futex, coldFutexAddr, FUTEX_WAIT_PRIVATE, old - 1, NULL);
                 }
-                int policy = sched_getscheduler(0);
+                int policy = sched_getscheduler(0) & ~SCHED_RESET_ON_FORK;
                 if (!(policy == SCHED_FIFO || policy == SCHED_RR)) {
                     ALOGE("did not receive expected priority boost");
                 }
@@ -336,8 +340,8 @@
                     // this store #4 is not atomic with respect to stores #1, #2, #3 above, but
                     // the newest open & oldest closed halves are atomic with respect to each other
                     mDumpState->mBounds = mBounds;
-                    ATRACE_INT("cycle_ms", monotonicNs / 1000000);
-                    ATRACE_INT("load_us", loadNs / 1000);
+                    ATRACE_INT(mCycleMs, monotonicNs / 1000000);
+                    ATRACE_INT(mLoadUs, loadNs / 1000);
                 }
 #endif
             } else {
diff --git a/services/audioflinger/FastThread.h b/services/audioflinger/FastThread.h
index 2efb6de..816b666 100644
--- a/services/audioflinger/FastThread.h
+++ b/services/audioflinger/FastThread.h
@@ -30,7 +30,7 @@
 class FastThread : public Thread {
 
 public:
-            FastThread();
+            FastThread(const char *cycleMs, const char *loadUs);
     virtual ~FastThread();
 
 private:
@@ -88,6 +88,9 @@
     FastThreadState::Command mCommand;
     bool            mAttemptedWrite;
 
+    char            mCycleMs[16];   // cycle_ms + suffix
+    char            mLoadUs[16];    // load_us + suffix
+
 };  // class FastThread
 
 }   // android
diff --git a/services/audioflinger/PatchPanel.cpp b/services/audioflinger/PatchPanel.cpp
index f8671b5..bee17fd 100644
--- a/services/audioflinger/PatchPanel.cpp
+++ b/services/audioflinger/PatchPanel.cpp
@@ -168,12 +168,46 @@
                 ALOGV("createAudioPatch() removing patch handle %d", *handle);
                 halHandle = mPatches[index]->mHalHandle;
                 Patch *removedPatch = mPatches[index];
+                // free resources owned by the removed patch if applicable
+                // 1) if a software patch is present, release the playback and capture threads and
+                // tracks created. This will also release the corresponding audio HAL patches
                 if ((removedPatch->mRecordPatchHandle
                         != AUDIO_PATCH_HANDLE_NONE) ||
                         (removedPatch->mPlaybackPatchHandle !=
                                 AUDIO_PATCH_HANDLE_NONE)) {
                     clearPatchConnections(removedPatch);
                 }
+                // 2) if the new patch and old patch source or sink are devices from different
+                // hw modules,  clear the audio HAL patches now because they will not be updated
+                // by call to create_audio_patch() below which will happen on a different HW module
+                if (halHandle != AUDIO_PATCH_HANDLE_NONE) {
+                    audio_module_handle_t hwModule = AUDIO_MODULE_HANDLE_NONE;
+                    if ((removedPatch->mAudioPatch.sources[0].type == AUDIO_PORT_TYPE_DEVICE) &&
+                        ((patch->sources[0].type != AUDIO_PORT_TYPE_DEVICE) ||
+                          (removedPatch->mAudioPatch.sources[0].ext.device.hw_module !=
+                           patch->sources[0].ext.device.hw_module))) {
+                        hwModule = removedPatch->mAudioPatch.sources[0].ext.device.hw_module;
+                    } else if ((patch->num_sinks == 0) ||
+                            ((removedPatch->mAudioPatch.sinks[0].type == AUDIO_PORT_TYPE_DEVICE) &&
+                             ((patch->sinks[0].type != AUDIO_PORT_TYPE_DEVICE) ||
+                              (removedPatch->mAudioPatch.sinks[0].ext.device.hw_module !=
+                               patch->sinks[0].ext.device.hw_module)))) {
+                        // Note on (patch->num_sinks == 0): this situation should not happen as
+                        // these special patches are only created by the policy manager but just
+                        // in case, systematically clear the HAL patch.
+                        // Note that removedPatch->mAudioPatch.num_sinks cannot be 0 here because
+                        // halHandle would be AUDIO_PATCH_HANDLE_NONE in this case.
+                        hwModule = removedPatch->mAudioPatch.sinks[0].ext.device.hw_module;
+                    }
+                    if (hwModule != AUDIO_MODULE_HANDLE_NONE) {
+                        ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(hwModule);
+                        if (index >= 0) {
+                            audio_hw_device_t *hwDevice =
+                                    audioflinger->mAudioHwDevs.valueAt(index)->hwDevice();
+                            hwDevice->release_audio_patch(hwDevice, halHandle);
+                        }
+                    }
+                }
                 mPatches.removeAt(index);
                 delete removedPatch;
                 break;
@@ -437,7 +471,7 @@
                                              format,
                                              frameCount,
                                              NULL,
-                                             IAudioFlinger::TRACK_DEFAULT);
+                                             AUDIO_INPUT_FLAG_NONE);
     if (patch->mPatchRecord == 0) {
         return NO_MEMORY;
     }
@@ -457,7 +491,7 @@
                                            format,
                                            frameCount,
                                            patch->mPatchRecord->buffer(),
-                                           IAudioFlinger::TRACK_DEFAULT);
+                                           AUDIO_OUTPUT_FLAG_NONE);
     if (patch->mPatchTrack == 0) {
         return NO_MEMORY;
     }
diff --git a/services/audioflinger/PatchPanel.h b/services/audioflinger/PatchPanel.h
index a56932c..d37c0d3 100644
--- a/services/audioflinger/PatchPanel.h
+++ b/services/audioflinger/PatchPanel.h
@@ -62,12 +62,24 @@
 
         struct audio_patch              mAudioPatch;
         audio_patch_handle_t            mHandle;
+        // handle for audio HAL patch handle present only when the audio HAL version is >= 3.0
         audio_patch_handle_t            mHalHandle;
+        // below members are used by a software audio patch connecting a source device from a
+        // given audio HW module to a sink device on an other audio HW module.
+        // playback thread created by createAudioPatch() and released by clearPatchConnections() if
+        // no existing playback thread can be used by the software patch
         sp<PlaybackThread>              mPlaybackThread;
+        // audio track created by createPatchConnections() and released by clearPatchConnections()
         sp<PlaybackThread::PatchTrack>  mPatchTrack;
+        // record thread created by createAudioPatch() and released by clearPatchConnections()
         sp<RecordThread>                mRecordThread;
+        // audio record created by createPatchConnections() and released by clearPatchConnections()
         sp<RecordThread::PatchRecord>   mPatchRecord;
+        // handle for audio patch connecting source device to record thread input.
+        // created by createPatchConnections() and released by clearPatchConnections()
         audio_patch_handle_t            mRecordPatchHandle;
+        // handle for audio patch connecting playback thread output to sink device
+        // created by createPatchConnections() and released by clearPatchConnections()
         audio_patch_handle_t            mPlaybackPatchHandle;
 
     };
diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 270e27f..5601bde 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -33,7 +33,7 @@
                                 const sp<IMemory>& sharedBuffer,
                                 audio_session_t sessionId,
                                 int uid,
-                                IAudioFlinger::track_flags_t flags,
+                                audio_output_flags_t flags,
                                 track_type type);
     virtual             ~Track();
     virtual status_t    initCheck() const;
@@ -55,8 +55,9 @@
             audio_stream_type_t streamType() const {
                 return mStreamType;
             }
-            bool        isOffloaded() const { return (mFlags & IAudioFlinger::TRACK_OFFLOAD) != 0; }
-            bool        isDirect() const { return (mFlags & IAudioFlinger::TRACK_DIRECT) != 0; }
+            bool        isOffloaded() const
+                                { return (mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0; }
+            bool        isDirect() const { return (mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0; }
             status_t    setParameters(const String8& keyValuePairs);
             status_t    attachAuxEffect(int EffectId);
             void        setAuxBuffer(int EffectId, int32_t *buffer);
@@ -72,6 +73,8 @@
 
     virtual status_t    setSyncEvent(const sp<SyncEvent>& event);
 
+    virtual bool        isFastTrack() const { return (mFlags & AUDIO_OUTPUT_FLAG_FAST) != 0; }
+
 protected:
     // for numerous
     friend class PlaybackThread;
@@ -166,7 +169,7 @@
     AudioTrackServerProxy*  mAudioTrackServerProxy;
     bool                mResumeToStopping; // track was paused in stopping state.
     bool                mFlushHwPending; // track requests for thread flush
-
+    audio_output_flags_t mFlags;
 };  // end of Track
 
 
@@ -226,7 +229,7 @@
                                    audio_format_t format,
                                    size_t frameCount,
                                    void *buffer,
-                                   IAudioFlinger::track_flags_t flags);
+                                   audio_output_flags_t flags);
     virtual             ~PatchTrack();
 
     virtual status_t    start(AudioSystem::sync_event_t event =
diff --git a/services/audioflinger/RecordTracks.h b/services/audioflinger/RecordTracks.h
index 13396a6..123e033 100644
--- a/services/audioflinger/RecordTracks.h
+++ b/services/audioflinger/RecordTracks.h
@@ -31,7 +31,7 @@
                                 void *buffer,
                                 audio_session_t sessionId,
                                 int uid,
-                                IAudioFlinger::track_flags_t flags,
+                                audio_input_flags_t flags,
                                 track_type type);
     virtual             ~RecordTrack();
     virtual status_t    initCheck() const;
@@ -58,6 +58,9 @@
                                              int64_t sourceFramesRead,
                                              uint32_t halSampleRate,
                                              const ExtendedTimestamp &timestamp);
+
+    virtual bool        isFastTrack() const { return (mFlags & AUDIO_INPUT_FLAG_FAST) != 0; }
+
 private:
     friend class AudioFlinger;  // for mState
 
@@ -86,6 +89,7 @@
 
             // used by the record thread to convert frames to proper destination format
             RecordBufferConverter              *mRecordBufferConverter;
+            audio_input_flags_t                mFlags;
 };
 
 // playback track, used by PatchPanel
@@ -98,7 +102,7 @@
                 audio_format_t format,
                 size_t frameCount,
                 void *buffer,
-                IAudioFlinger::track_flags_t flags);
+                audio_input_flags_t flags);
     virtual             ~PatchRecord();
 
     // AudioBufferProvider interface
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index e028e0e..8a4fbb5 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1256,6 +1256,144 @@
     }
 }
 
+// checkEffectCompatibility_l() must be called with ThreadBase::mLock held
+status_t AudioFlinger::RecordThread::checkEffectCompatibility_l(
+        const effect_descriptor_t *desc, audio_session_t sessionId)
+{
+    // No global effect sessions on record threads
+    if (sessionId == AUDIO_SESSION_OUTPUT_MIX || sessionId == AUDIO_SESSION_OUTPUT_STAGE) {
+        ALOGW("checkEffectCompatibility_l(): global effect %s on record thread %s",
+                desc->name, mThreadName);
+        return BAD_VALUE;
+    }
+    // only pre processing effects on record thread
+    if ((desc->flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_PRE_PROC) {
+        ALOGW("checkEffectCompatibility_l(): non pre processing effect %s on record thread %s",
+                desc->name, mThreadName);
+        return BAD_VALUE;
+    }
+
+    // always allow effects without processing load or latency
+    if ((desc->flags & EFFECT_FLAG_NO_PROCESS_MASK) == EFFECT_FLAG_NO_PROCESS) {
+        return NO_ERROR;
+    }
+
+    audio_input_flags_t flags = mInput->flags;
+    if (hasFastCapture() || (flags & AUDIO_INPUT_FLAG_FAST)) {
+        if (flags & AUDIO_INPUT_FLAG_RAW) {
+            ALOGW("checkEffectCompatibility_l(): effect %s on record thread %s in raw mode",
+                  desc->name, mThreadName);
+            return BAD_VALUE;
+        }
+        if ((desc->flags & EFFECT_FLAG_HW_ACC_TUNNEL) == 0) {
+            ALOGW("checkEffectCompatibility_l(): non HW effect %s on record thread %s in fast mode",
+                  desc->name, mThreadName);
+            return BAD_VALUE;
+        }
+    }
+    return NO_ERROR;
+}
+
+// checkEffectCompatibility_l() must be called with ThreadBase::mLock held
+status_t AudioFlinger::PlaybackThread::checkEffectCompatibility_l(
+        const effect_descriptor_t *desc, audio_session_t sessionId)
+{
+    // no preprocessing on playback threads
+    if ((desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC) {
+        ALOGW("checkEffectCompatibility_l(): pre processing effect %s created on playback"
+                " thread %s", desc->name, mThreadName);
+        return BAD_VALUE;
+    }
+
+    switch (mType) {
+    case MIXER: {
+        // Reject any effect on mixer multichannel sinks.
+        // TODO: fix both format and multichannel issues with effects.
+        if (mChannelCount != FCC_2) {
+            ALOGW("checkEffectCompatibility_l(): effect %s for multichannel(%d) on MIXER"
+                    " thread %s", desc->name, mChannelCount, mThreadName);
+            return BAD_VALUE;
+        }
+        audio_output_flags_t flags = mOutput->flags;
+        if (hasFastMixer() || (flags & AUDIO_OUTPUT_FLAG_FAST)) {
+            if (sessionId == AUDIO_SESSION_OUTPUT_MIX) {
+                // global effects are applied only to non fast tracks if they are SW
+                if ((desc->flags & EFFECT_FLAG_HW_ACC_TUNNEL) == 0) {
+                    break;
+                }
+            } else if (sessionId == AUDIO_SESSION_OUTPUT_STAGE) {
+                // only post processing on output stage session
+                if ((desc->flags & EFFECT_FLAG_TYPE_MASK) != EFFECT_FLAG_TYPE_POST_PROC) {
+                    ALOGW("checkEffectCompatibility_l(): non post processing effect %s not allowed"
+                            " on output stage session", desc->name);
+                    return BAD_VALUE;
+                }
+            } else {
+                // no restriction on effects applied on non fast tracks
+                if ((hasAudioSession_l(sessionId) & ThreadBase::FAST_SESSION) == 0) {
+                    break;
+                }
+            }
+
+            // always allow effects without processing load or latency
+            if ((desc->flags & EFFECT_FLAG_NO_PROCESS_MASK) == EFFECT_FLAG_NO_PROCESS) {
+                break;
+            }
+            if (flags & AUDIO_OUTPUT_FLAG_RAW) {
+                ALOGW("checkEffectCompatibility_l(): effect %s on playback thread in raw mode",
+                      desc->name);
+                return BAD_VALUE;
+            }
+            if ((desc->flags & EFFECT_FLAG_HW_ACC_TUNNEL) == 0) {
+                ALOGW("checkEffectCompatibility_l(): non HW effect %s on playback thread"
+                        " in fast mode", desc->name);
+                return BAD_VALUE;
+            }
+        }
+    } break;
+    case OFFLOAD:
+        // nothing actionable on offload threads, if the effect:
+        //   - is offloadable: the effect can be created
+        //   - is NOT offloadable: the effect should still be created, but EffectHandle::enable()
+        //     will take care of invalidating the tracks of the thread
+        break;
+    case DIRECT:
+        // Reject any effect on Direct output threads for now, since the format of
+        // mSinkBuffer is not guaranteed to be compatible with effect processing (PCM 16 stereo).
+        ALOGW("checkEffectCompatibility_l(): effect %s on DIRECT output thread %s",
+                desc->name, mThreadName);
+        return BAD_VALUE;
+    case DUPLICATING:
+        // Reject any effect on mixer multichannel sinks.
+        // TODO: fix both format and multichannel issues with effects.
+        if (mChannelCount != FCC_2) {
+            ALOGW("checkEffectCompatibility_l(): effect %s for multichannel(%d)"
+                    " on DUPLICATING thread %s", desc->name, mChannelCount, mThreadName);
+            return BAD_VALUE;
+        }
+        if ((sessionId == AUDIO_SESSION_OUTPUT_STAGE) || (sessionId == AUDIO_SESSION_OUTPUT_MIX)) {
+            ALOGW("checkEffectCompatibility_l(): global effect %s on DUPLICATING"
+                    " thread %s", desc->name, mThreadName);
+            return BAD_VALUE;
+        }
+        if ((desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) {
+            ALOGW("checkEffectCompatibility_l(): post processing effect %s on"
+                    " DUPLICATING thread %s", desc->name, mThreadName);
+            return BAD_VALUE;
+        }
+        if ((desc->flags & EFFECT_FLAG_HW_ACC_TUNNEL) != 0) {
+            ALOGW("checkEffectCompatibility_l(): HW tunneled effect %s on"
+                    " DUPLICATING thread %s", desc->name, mThreadName);
+            return BAD_VALUE;
+        }
+        break;
+    default:
+        LOG_ALWAYS_FATAL("checkEffectCompatibility_l(): wrong thread type %d", mType);
+    }
+
+    return NO_ERROR;
+}
+
 // ThreadBase::createEffect_l() must be called with AudioFlinger::mLock held
 sp<AudioFlinger::EffectHandle> AudioFlinger::ThreadBase::createEffect_l(
         const sp<AudioFlinger::Client>& client,
@@ -1280,54 +1418,16 @@
         goto Exit;
     }
 
-    // Reject any effect on Direct output threads for now, since the format of
-    // mSinkBuffer is not guaranteed to be compatible with effect processing (PCM 16 stereo).
-    if (mType == DIRECT) {
-        ALOGW("createEffect_l() Cannot add effect %s on Direct output type thread %s",
-                desc->name, mThreadName);
-        lStatus = BAD_VALUE;
-        goto Exit;
-    }
-
-    // Reject any effect on mixer or duplicating multichannel sinks.
-    // TODO: fix both format and multichannel issues with effects.
-    if ((mType == MIXER || mType == DUPLICATING) && mChannelCount != FCC_2) {
-        ALOGW("createEffect_l() Cannot add effect %s for multichannel(%d) %s threads",
-                desc->name, mChannelCount, mType == MIXER ? "MIXER" : "DUPLICATING");
-        lStatus = BAD_VALUE;
-        goto Exit;
-    }
-
-    // Allow global effects only on offloaded and mixer threads
-    if (sessionId == AUDIO_SESSION_OUTPUT_MIX) {
-        switch (mType) {
-        case MIXER:
-        case OFFLOAD:
-            break;
-        case DIRECT:
-        case DUPLICATING:
-        case RECORD:
-        default:
-            ALOGW("createEffect_l() Cannot add global effect %s on thread %s",
-                    desc->name, mThreadName);
-            lStatus = BAD_VALUE;
-            goto Exit;
-        }
-    }
-
-    // Only Pre processor effects are allowed on input threads and only on input threads
-    if ((mType == RECORD) != ((desc->flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC)) {
-        ALOGW("createEffect_l() effect %s (flags %08x) created on wrong thread type %d",
-                desc->name, desc->flags, mType);
-        lStatus = BAD_VALUE;
-        goto Exit;
-    }
-
     ALOGV("createEffect_l() thread %p effect %s on session %d", this, desc->name, sessionId);
 
     { // scope for mLock
         Mutex::Autolock _l(mLock);
 
+        lStatus = checkEffectCompatibility_l(desc, sessionId);
+        if (lStatus != NO_ERROR) {
+            goto Exit;
+        }
+
         // check for existing effect chain with the requested audio session
         chain = getEffectChain_l(sessionId);
         if (chain == 0) {
@@ -1763,7 +1863,7 @@
         size_t *pFrameCount,
         const sp<IMemory>& sharedBuffer,
         audio_session_t sessionId,
-        IAudioFlinger::track_flags_t *flags,
+        audio_output_flags_t *flags,
         pid_t tid,
         int uid,
         status_t *status)
@@ -1771,9 +1871,22 @@
     size_t frameCount = *pFrameCount;
     sp<Track> track;
     status_t lStatus;
+    audio_output_flags_t outputFlags = mOutput->flags;
+
+    // special case for FAST flag considered OK if fast mixer is present
+    if (hasFastMixer()) {
+        outputFlags = (audio_output_flags_t)(outputFlags | AUDIO_OUTPUT_FLAG_FAST);
+    }
+
+    // Check if requested flags are compatible with output stream flags
+    if ((*flags & outputFlags) != *flags) {
+        ALOGW("createTrack_l(): mismatch between requested flags (%08x) and output flags (%08x)",
+              *flags, outputFlags);
+        *flags = (audio_output_flags_t)(*flags & outputFlags);
+    }
 
     // client expresses a preference for FAST, but we get the final say
-    if (*flags & IAudioFlinger::TRACK_FAST) {
+    if (*flags & AUDIO_OUTPUT_FLAG_FAST) {
       if (
             // PCM data
             audio_is_linear_pcm(format) &&
@@ -1801,8 +1914,29 @@
             }
             frameCount = max(frameCount, mFrameCount * sFastTrackMultiplier); // incl framecount 0
         }
-        ALOGV("AUDIO_OUTPUT_FLAG_FAST accepted: frameCount=%zu mFrameCount=%zu",
-                frameCount, mFrameCount);
+
+        // check compatibility with audio effects.
+        { // scope for mLock
+            Mutex::Autolock _l(mLock);
+            for (audio_session_t session : {
+                    AUDIO_SESSION_OUTPUT_STAGE,
+                    AUDIO_SESSION_OUTPUT_MIX,
+                    sessionId,
+                }) {
+                sp<EffectChain> chain = getEffectChain_l(session);
+                if (chain.get() != nullptr) {
+                    audio_output_flags_t old = *flags;
+                    chain->checkOutputFlagCompatibility(flags);
+                    if (old != *flags) {
+                        ALOGV("AUDIO_OUTPUT_FLAGS denied by effect, session=%d old=%#x new=%#x",
+                                (int)session, (int)old, (int)*flags);
+                    }
+                }
+            }
+        }
+        ALOGV_IF((*flags & AUDIO_OUTPUT_FLAG_FAST) != 0,
+                 "AUDIO_OUTPUT_FLAG_FAST accepted: frameCount=%zu mFrameCount=%zu",
+                 frameCount, mFrameCount);
       } else {
         ALOGV("AUDIO_OUTPUT_FLAG_FAST denied: sharedBuffer=%p frameCount=%zu "
                 "mFrameCount=%zu format=%#x mFormat=%#x isLinear=%d channelMask=%#x "
@@ -1811,7 +1945,7 @@
                 sharedBuffer.get(), frameCount, mFrameCount, format, mFormat,
                 audio_is_linear_pcm(format),
                 channelMask, sampleRate, mSampleRate, hasFastMixer(), tid, mFastTrackAvailMask);
-        *flags &= ~IAudioFlinger::TRACK_FAST;
+        *flags = (audio_output_flags_t)(*flags & ~AUDIO_OUTPUT_FLAG_FAST);
       }
     }
     // For normal PCM streaming tracks, update minimum frame count.
@@ -1819,7 +1953,7 @@
     // to be at least 2 x the normal mixer frame count and cover audio hardware latency.
     // This is probably too conservative, but legacy application code may depend on it.
     // If you change this calculation, also review the start threshold which is related.
-    if (!(*flags & IAudioFlinger::TRACK_FAST)
+    if (!(*flags & AUDIO_OUTPUT_FLAG_FAST)
             && audio_has_proportional_frames(format) && sharedBuffer == 0) {
         // this must match AudioTrack.cpp calculateMinFrameCount().
         // TODO: Move to a common library
@@ -1927,7 +2061,7 @@
             chain->incTrackCnt();
         }
 
-        if ((*flags & IAudioFlinger::TRACK_FAST) && (tid != -1)) {
+        if ((*flags & AUDIO_OUTPUT_FLAG_FAST) && (tid != -1)) {
             pid_t callingPid = IPCThreadState::self()->getCallingPid();
             // we don't have CAP_SYS_NICE, nor do we want to have it as it's too powerful,
             // so ask activity manager to do this on our behalf
@@ -2171,6 +2305,12 @@
     mCallbackThread->resetDraining();
 }
 
+void AudioFlinger::PlaybackThread::errorCallback()
+{
+    ALOG_ASSERT(mCallbackThread != 0);
+    mCallbackThread->setAsyncError();
+}
+
 void AudioFlinger::PlaybackThread::resetWriteBlocked(uint32_t sequence)
 {
     Mutex::Autolock _l(mLock);
@@ -2205,6 +2345,9 @@
     case STREAM_CBK_EVENT_DRAIN_READY:
         me->drainCallback();
         break;
+    case STREAM_CBK_EVENT_ERROR:
+        me->errorCallback();
+        break;
     default:
         ALOGW("asyncCallback() unknown event %d", event);
         break;
@@ -2295,6 +2438,7 @@
             kUseFastMixer == FastMixer_Dynamic)) {
         size_t minNormalFrameCount = (kMinNormalSinkBufferSizeMs * mSampleRate) / 1000;
         size_t maxNormalFrameCount = (kMaxNormalSinkBufferSizeMs * mSampleRate) / 1000;
+
         // round up minimum and round down maximum to nearest 16 frames to satisfy AudioMixer
         minNormalFrameCount = (minNormalFrameCount + 15) & ~15;
         maxNormalFrameCount = maxNormalFrameCount & ~15;
@@ -2311,18 +2455,7 @@
                 multiplier = (double) maxNormalFrameCount / (double) mFrameCount;
             }
         } else {
-            // prefer an even multiplier, for compatibility with doubling of fast tracks due to HAL
-            // SRC (it would be unusual for the normal sink buffer size to not be a multiple of fast
-            // track, but we sometimes have to do this to satisfy the maximum frame count
-            // constraint)
-            // FIXME this rounding up should not be done if no HAL SRC
-            uint32_t truncMult = (uint32_t) multiplier;
-            if ((truncMult & 1)) {
-                if ((truncMult + 1) * mFrameCount <= maxNormalFrameCount) {
-                    ++truncMult;
-                }
-            }
-            multiplier = (double) truncMult;
+            multiplier = floor(multiplier);
         }
     }
     mNormalFrameCount = multiplier * mFrameCount;
@@ -2407,9 +2540,9 @@
     }
 }
 
-uint32_t AudioFlinger::PlaybackThread::hasAudioSession(audio_session_t sessionId) const
+// hasAudioSession_l() must be called with ThreadBase::mLock held
+uint32_t AudioFlinger::PlaybackThread::hasAudioSession_l(audio_session_t sessionId) const
 {
-    Mutex::Autolock _l(mLock);
     uint32_t result = 0;
     if (getEffectChain_l(sessionId) != 0) {
         result = EFFECT_SESSION;
@@ -2419,6 +2552,9 @@
         sp<Track> track = mTracks[i];
         if (sessionId == track->sessionId() && !track->isInvalid()) {
             result |= TRACK_SESSION;
+            if (track->isFastTrack()) {
+                result |= FAST_SESSION;
+            }
             break;
         }
     }
@@ -2920,7 +3056,7 @@
                 if (timestamp.mTimeNs[ExtendedTimestamp::LOCATION_KERNEL] >= 0) {
                     kernelLocationUpdate = true;
                 } else {
-                    ALOGV("getTimestamp error - no valid kernel position");
+                    ALOGVV("getTimestamp error - no valid kernel position");
                 }
 
                 // copy over kernel info
@@ -2975,9 +3111,9 @@
                 if (!keepWakeLock()) {
                     releaseWakeLock_l();
                     released = true;
+                    mWakeLockUids.clear();
+                    mActiveTracksGeneration++;
                 }
-                mWakeLockUids.clear();
-                mActiveTracksGeneration++;
                 ALOGV("wait async completion");
                 mWaitWorkCV.wait(mLock);
                 ALOGV("async completion/wake");
@@ -3188,6 +3324,11 @@
                         // (1) mixer threads without a fast mixer (which has its own warm-up)
                         // (2) minimum buffer sized tracks (even if the track is full,
                         //     the app won't fill fast enough to handle the sudden draw).
+                        //
+                        // Total time spent in last processing cycle equals time spent in
+                        // 1. threadLoop_write, as well as time spent in
+                        // 2. threadLoop_mix (significant for heavy mixing, especially
+                        //                    on low tier processors)
 
                         // it's OK if deltaMs is an overestimate.
                         const int32_t deltaMs =
@@ -3201,6 +3342,9 @@
                                     " ret(%zd) deltaMs(%d) requires sleep %d ms",
                                     this, ret, deltaMs, throttleMs);
                             mThreadThrottleTimeMs += throttleMs;
+                            // Throttle must be attributed to the previous mixer loop's write time
+                            // to allow back-to-back throttling.
+                            lastWriteFinished += throttleMs * 1000000;
                         } else {
                             uint32_t diff = mThreadThrottleTimeMs - mThreadThrottleEndMs;
                             if (diff > 0) {
@@ -3308,10 +3452,15 @@
 status_t AudioFlinger::MixerThread::createAudioPatch_l(const struct audio_patch *patch,
                                                           audio_patch_handle_t *handle)
 {
-    AutoPark<FastMixer> park(mFastMixer);
-
-    status_t status = PlaybackThread::createAudioPatch_l(patch, handle);
-
+    status_t status;
+    if (property_get_bool("af.patch_park", false /* default_value */)) {
+        // Park FastMixer to avoid potential DOS issues with writing to the HAL
+        // or if HAL does not properly lock against access.
+        AutoPark<FastMixer> park(mFastMixer);
+        status = PlaybackThread::createAudioPatch_l(patch, handle);
+    } else {
+        status = PlaybackThread::createAudioPatch_l(patch, handle);
+    }
     return status;
 }
 
@@ -3393,10 +3542,15 @@
 
 status_t AudioFlinger::MixerThread::releaseAudioPatch_l(const audio_patch_handle_t handle)
 {
-    AutoPark<FastMixer> park(mFastMixer);
-
-    status_t status = PlaybackThread::releaseAudioPatch_l(handle);
-
+    status_t status;
+    if (property_get_bool("af.patch_park", false /* default_value */)) {
+        // Park FastMixer to avoid potential DOS issues with writing to the HAL
+        // or if HAL does not properly lock against access.
+        AutoPark<FastMixer> park(mFastMixer);
+        status = PlaybackThread::releaseAudioPatch_l(handle);
+    } else {
+        status = PlaybackThread::releaseAudioPatch_l(handle);
+    }
     return status;
 }
 
@@ -3778,6 +3932,13 @@
     broadcast_l();
 }
 
+void AudioFlinger::PlaybackThread::onAsyncError()
+{
+    for (int i = AUDIO_STREAM_SYSTEM; i < (int)AUDIO_STREAM_CNT; i++) {
+        invalidateTracks((audio_stream_type_t)i);
+    }
+}
+
 void AudioFlinger::MixerThread::threadLoop_mix()
 {
     // mix buffers...
@@ -4421,10 +4582,25 @@
     return mixerStatus;
 }
 
+// trackCountForUid_l() must be called with ThreadBase::mLock held
+uint32_t AudioFlinger::PlaybackThread::trackCountForUid_l(uid_t uid)
+{
+    uint32_t trackCount = 0;
+    for (size_t i = 0; i < mTracks.size() ; i++) {
+        if (mTracks[i]->uid() == (int)uid) {
+            trackCount++;
+        }
+    }
+    return trackCount;
+}
+
 // getTrackName_l() must be called with ThreadBase::mLock held
 int AudioFlinger::MixerThread::getTrackName_l(audio_channel_mask_t channelMask,
-        audio_format_t format, audio_session_t sessionId)
+        audio_format_t format, audio_session_t sessionId, uid_t uid)
 {
+    if (trackCountForUid_l(uid) > (PlaybackThread::kMaxTracksPerUid - 1)) {
+        return -1;
+    }
     return mAudioMixer->getTrackName(channelMask, format, sessionId);
 }
 
@@ -4529,7 +4705,7 @@
             mAudioMixer = new AudioMixer(mNormalFrameCount, mSampleRate);
             for (size_t i = 0; i < mTracks.size() ; i++) {
                 int name = getTrackName_l(mTracks[i]->mChannelMask,
-                        mTracks[i]->mFormat, mTracks[i]->mSessionId);
+                        mTracks[i]->mFormat, mTracks[i]->mSessionId, mTracks[i]->uid());
                 if (name < 0) {
                     break;
                 }
@@ -4736,9 +4912,12 @@
             }
         } else if (track->isResumePending()) {
             track->resumeAck();
-            if (last && mHwPaused) {
-                doHwResume = true;
-                mHwPaused = false;
+            if (last) {
+                mLeftVolFloat = mRightVolFloat = -1.0;
+                if (mHwPaused) {
+                    doHwResume = true;
+                    mHwPaused = false;
+                }
             }
         }
 
@@ -4764,8 +4943,10 @@
 
             if (track->mFillingUpStatus == Track::FS_FILLED) {
                 track->mFillingUpStatus = Track::FS_ACTIVE;
-                // make sure processVolume_l() will apply new volume even if 0
-                mLeftVolFloat = mRightVolFloat = -1.0;
+                if (last) {
+                    // make sure processVolume_l() will apply new volume even if 0
+                    mLeftVolFloat = mRightVolFloat = -1.0;
+                }
                 if (!mHwSupportsPause) {
                     track->resumeAck();
                 }
@@ -4969,8 +5150,11 @@
 
 // getTrackName_l() must be called with ThreadBase::mLock held
 int AudioFlinger::DirectOutputThread::getTrackName_l(audio_channel_mask_t channelMask __unused,
-        audio_format_t format __unused, audio_session_t sessionId __unused)
+        audio_format_t format __unused, audio_session_t sessionId __unused, uid_t uid)
 {
+    if (trackCountForUid_l(uid) > (PlaybackThread::kMaxTracksPerUid - 1)) {
+        return -1;
+    }
     return 0;
 }
 
@@ -5094,7 +5278,8 @@
     :   Thread(false /*canCallJava*/),
         mPlaybackThread(playbackThread),
         mWriteAckSequence(0),
-        mDrainSequence(0)
+        mDrainSequence(0),
+        mAsyncError(false)
 {
 }
 
@@ -5112,11 +5297,13 @@
     while (!exitPending()) {
         uint32_t writeAckSequence;
         uint32_t drainSequence;
+        bool asyncError;
 
         {
             Mutex::Autolock _l(mLock);
             while (!((mWriteAckSequence & 1) ||
                      (mDrainSequence & 1) ||
+                     mAsyncError ||
                      exitPending())) {
                 mWaitWorkCV.wait(mLock);
             }
@@ -5130,6 +5317,8 @@
             mWriteAckSequence &= ~1;
             drainSequence = mDrainSequence;
             mDrainSequence &= ~1;
+            asyncError = mAsyncError;
+            mAsyncError = false;
         }
         {
             sp<AudioFlinger::PlaybackThread> playbackThread = mPlaybackThread.promote();
@@ -5140,6 +5329,9 @@
                 if (drainSequence & 1) {
                     playbackThread->resetDraining(drainSequence >> 1);
                 }
+                if (asyncError) {
+                    playbackThread->onAsyncError();
+                }
             }
         }
     }
@@ -5188,12 +5380,20 @@
     }
 }
 
+void AudioFlinger::AsyncCallbackThread::setAsyncError()
+{
+    Mutex::Autolock _l(mLock);
+    mAsyncError = true;
+    mWaitWorkCV.signal();
+}
+
 
 // ----------------------------------------------------------------------------
 AudioFlinger::OffloadThread::OffloadThread(const sp<AudioFlinger>& audioFlinger,
         AudioStreamOut* output, audio_io_handle_t id, uint32_t device, bool systemReady)
     :   DirectOutputThread(audioFlinger, output, id, device, OFFLOAD, systemReady),
-        mPausedWriteLength(0), mPausedBytesRemaining(0), mKeepWakeLock(true)
+        mPausedWriteLength(0), mPausedBytesRemaining(0), mKeepWakeLock(true),
+        mOffloadUnderrunPosition(~0LL)
 {
     //FIXME: mStandby should be set to true by ThreadBase constructor
     mStandby = true;
@@ -5303,6 +5503,8 @@
                 // enable write to audio HAL
                 mSleepTimeUs = 0;
 
+                mLeftVolFloat = mRightVolFloat = -1.0;
+
                 // Do not handle new data in this iteration even if track->framesReady()
                 mixerStatus = MIXER_TRACKS_ENABLED;
             }
@@ -5311,8 +5513,10 @@
             ALOGVV("OffloadThread: track %d s=%08x [OK]", track->name(), cblk->mServer);
             if (track->mFillingUpStatus == Track::FS_FILLED) {
                 track->mFillingUpStatus = Track::FS_ACTIVE;
-                // make sure processVolume_l() will apply new volume even if 0
-                mLeftVolFloat = mRightVolFloat = -1.0;
+                if (last) {
+                    // make sure processVolume_l() will apply new volume even if 0
+                    mLeftVolFloat = mRightVolFloat = -1.0;
+                }
             }
 
             if (last) {
@@ -5399,12 +5603,30 @@
                 // No buffers for this track. Give it a few chances to
                 // fill a buffer, then remove it from active list.
                 if (--(track->mRetryCount) <= 0) {
-                    ALOGV("OffloadThread: BUFFER TIMEOUT: remove(%d) from active list",
-                          track->name());
-                    tracksToRemove->add(track);
-                    // indicate to client process that the track was disabled because of underrun;
-                    // it will then automatically call start() when data is available
-                    track->disable();
+                    bool running = false;
+                    if (mOutput->stream->get_presentation_position != nullptr) {
+                        uint64_t position = 0;
+                        struct timespec unused;
+                        // The running check restarts the retry counter at least once.
+                        int ret = mOutput->stream->get_presentation_position(
+                                mOutput->stream, &position, &unused);
+                        if (ret == NO_ERROR && position != mOffloadUnderrunPosition) {
+                            running = true;
+                            mOffloadUnderrunPosition = position;
+                        }
+                        ALOGVV("underrun counter, running(%d): %lld vs %lld", running,
+                                (long long)position, (long long)mOffloadUnderrunPosition);
+                    }
+                    if (running) { // still running, give us more time.
+                        track->mRetryCount = kMaxTrackRetriesOffload;
+                    } else {
+                        ALOGV("OffloadThread: BUFFER TIMEOUT: remove(%d) from active list",
+                                track->name());
+                        tracksToRemove->add(track);
+                        // indicate to client process that the track was disabled because of underrun;
+                        // it will then automatically call start() when data is available
+                        track->disable();
+                    }
                 } else if (last){
                     mixerStatus = MIXER_TRACKS_ENABLED;
                 }
@@ -5461,6 +5683,7 @@
     mPausedBytesRemaining = 0;
     // reset bytes written count to reflect that DSP buffers are empty after flush.
     mBytesWritten = 0;
+    mOffloadUnderrunPosition = ~0LL;
 
     if (mUseAsyncWrite) {
         // discard any pending drain or write ack by incrementing sequence
@@ -5582,12 +5805,15 @@
                                             mChannelMask,
                                             frameCount,
                                             IPCThreadState::self()->getCallingUid());
-    if (outputTrack->cblk() != NULL) {
-        thread->setStreamVolume(AUDIO_STREAM_PATCH, 1.0f);
-        mOutputTracks.add(outputTrack);
-        ALOGV("addOutputTrack() track %p, on thread %p", outputTrack.get(), thread);
-        updateWaitTime_l();
+    status_t status = outputTrack != 0 ? outputTrack->initCheck() : (status_t) NO_MEMORY;
+    if (status != NO_ERROR) {
+        ALOGE("addOutputTrack() initCheck failed %d", status);
+        return;
     }
+    thread->setStreamVolume(AUDIO_STREAM_PATCH, 1.0f);
+    mOutputTracks.add(outputTrack);
+    ALOGV("addOutputTrack() track %p, on thread %p", outputTrack.get(), thread);
+    updateWaitTime_l();
 }
 
 void AudioFlinger::DuplicatingThread::removeOutputTrack(MixerThread *thread)
@@ -5857,14 +6083,6 @@
     for (;;) {
         Vector< sp<EffectChain> > effectChains;
 
-        // sleep with mutex unlocked
-        if (sleepUs > 0) {
-            ATRACE_BEGIN("sleep");
-            usleep(sleepUs);
-            ATRACE_END();
-            sleepUs = 0;
-        }
-
         // activeTracks accumulates a copy of a subset of mActiveTracks
         Vector< sp<RecordTrack> > activeTracks;
 
@@ -5885,6 +6103,15 @@
                 break;
             }
 
+            // sleep with mutex unlocked
+            if (sleepUs > 0) {
+                ATRACE_BEGIN("sleepC");
+                mWaitWorkCV.waitRelative(mLock, microseconds((nsecs_t)sleepUs));
+                ATRACE_END();
+                sleepUs = 0;
+                continue;
+            }
+
             // if no active track(s), then standby and release wakelock
             size_t size = mActiveTracks.size();
             if (size == 0) {
@@ -5908,6 +6135,7 @@
             }
 
             bool doBroadcast = false;
+            bool allStopped = true;
             for (size_t i = 0; i < size; ) {
 
                 activeTrack = mActiveTracks[i];
@@ -5936,15 +6164,18 @@
                 case TrackBase::STARTING_1:
                     sleepUs = 10000;
                     i++;
+                    allStopped = false;
                     continue;
 
                 case TrackBase::STARTING_2:
                     doBroadcast = true;
                     mStandby = false;
                     activeTrack->mState = TrackBase::ACTIVE;
+                    allStopped = false;
                     break;
 
                 case TrackBase::ACTIVE:
+                    allStopped = false;
                     break;
 
                 case TrackBase::IDLE:
@@ -5964,6 +6195,10 @@
                     fastTrack = activeTrack;
                 }
             }
+
+            if (allStopped) {
+                standbyIfNotAlreadyInStandby();
+            }
             if (doBroadcast) {
                 mStartStopCond.broadcast();
             }
@@ -6071,7 +6306,8 @@
         mTimestamp.mTimeNs[ExtendedTimestamp::LOCATION_SERVER] = systemTime();
 
         // Update server timestamp with kernel stats
-        if (mInput->stream->get_capture_position != nullptr) {
+        if (mInput->stream->get_capture_position != nullptr
+                && mPipeSource.get() == nullptr /* don't obtain for FastCapture, could block */) {
             int64_t position, time;
             int ret = mInput->stream->get_capture_position(mInput->stream, &position, &time);
             if (ret == NO_ERROR) {
@@ -6295,16 +6531,30 @@
         audio_session_t sessionId,
         size_t *notificationFrames,
         int uid,
-        IAudioFlinger::track_flags_t *flags,
+        audio_input_flags_t *flags,
         pid_t tid,
         status_t *status)
 {
     size_t frameCount = *pFrameCount;
     sp<RecordTrack> track;
     status_t lStatus;
+    audio_input_flags_t inputFlags = mInput->flags;
+
+    // special case for FAST flag considered OK if fast capture is present
+    if (hasFastCapture()) {
+        inputFlags = (audio_input_flags_t)(inputFlags | AUDIO_INPUT_FLAG_FAST);
+    }
+
+    // Check if requested flags are compatible with output stream flags
+    if ((*flags & inputFlags) != *flags) {
+        ALOGW("createRecordTrack_l(): mismatch between requested flags (%08x) and"
+                " input flags (%08x)",
+              *flags, inputFlags);
+        *flags = (audio_input_flags_t)(*flags & inputFlags);
+    }
 
     // client expresses a preference for FAST, but we get the final say
-    if (*flags & IAudioFlinger::TRACK_FAST) {
+    if (*flags & AUDIO_INPUT_FLAG_FAST) {
       if (
             // we formerly checked for a callback handler (non-0 tid),
             // but that is no longer required for TRANSFER_OBTAIN mode
@@ -6324,8 +6574,21 @@
             // there are sufficient fast track slots available
             mFastTrackAvail
         ) {
-        ALOGV("AUDIO_INPUT_FLAG_FAST accepted: frameCount=%zu mFrameCount=%zu",
-                frameCount, mFrameCount);
+          // check compatibility with audio effects.
+          Mutex::Autolock _l(mLock);
+          // Do not accept FAST flag if the session has software effects
+          sp<EffectChain> chain = getEffectChain_l(sessionId);
+          if (chain != 0) {
+              audio_input_flags_t old = *flags;
+              chain->checkInputFlagCompatibility(flags);
+              if (old != *flags) {
+                  ALOGV("AUDIO_INPUT_FLAGS denied by effect old=%#x new=%#x",
+                          (int)old, (int)*flags);
+              }
+          }
+          ALOGV_IF((*flags & AUDIO_INPUT_FLAG_FAST) != 0,
+                   "AUDIO_INPUT_FLAG_FAST accepted: frameCount=%zu mFrameCount=%zu",
+                   frameCount, mFrameCount);
       } else {
         ALOGV("AUDIO_INPUT_FLAG_FAST denied: frameCount=%zu mFrameCount=%zu mPipeFramesP2=%zu "
                 "format=%#x isLinear=%d channelMask=%#x sampleRate=%u mSampleRate=%u "
@@ -6333,12 +6596,12 @@
                 frameCount, mFrameCount, mPipeFramesP2,
                 format, audio_is_linear_pcm(format), channelMask, sampleRate, mSampleRate,
                 hasFastCapture(), tid, mFastTrackAvail);
-        *flags &= ~IAudioFlinger::TRACK_FAST;
+        *flags = (audio_input_flags_t)(*flags & ~AUDIO_INPUT_FLAG_FAST);
       }
     }
 
     // compute track buffer size in frames, and suggest the notification frame count
-    if (*flags & IAudioFlinger::TRACK_FAST) {
+    if (*flags & AUDIO_INPUT_FLAG_FAST) {
         // fast track: frame count is exactly the pipe depth
         frameCount = mPipeFramesP2;
         // ignore requested notificationFrames, and always notify exactly once every HAL buffer
@@ -6394,7 +6657,7 @@
         setEffectSuspended_l(FX_IID_AEC, suspend, sessionId);
         setEffectSuspended_l(FX_IID_NS, suspend, sessionId);
 
-        if ((*flags & IAudioFlinger::TRACK_FAST) && (tid != -1)) {
+        if ((*flags & AUDIO_INPUT_FLAG_FAST) && (tid != -1)) {
             pid_t callingPid = IPCThreadState::self()->getCallingPid();
             // we don't have CAP_SYS_NICE, nor do we want to have it as it's too powerful,
             // so ask activity manager to do this on our behalf
@@ -6518,6 +6781,8 @@
     }
     // note that threadLoop may still be processing the track at this point [without lock]
     recordTrack->mState = TrackBase::PAUSING;
+    // signal thread to stop
+    mWaitWorkCV.broadcast();
     // do not wait for mStartStopCond if exiting
     if (exitPending()) {
         return true;
@@ -7215,9 +7480,9 @@
     return mInput->stream->get_input_frames_lost(mInput->stream);
 }
 
-uint32_t AudioFlinger::RecordThread::hasAudioSession(audio_session_t sessionId) const
+// hasAudioSession_l() must be called with ThreadBase::mLock held
+uint32_t AudioFlinger::RecordThread::hasAudioSession_l(audio_session_t sessionId) const
 {
-    Mutex::Autolock _l(mLock);
     uint32_t result = 0;
     if (getEffectChain_l(sessionId) != 0) {
         result = EFFECT_SESSION;
@@ -7226,6 +7491,9 @@
     for (size_t i = 0; i < mTracks.size(); ++i) {
         if (sessionId == mTracks[i]->sessionId()) {
             result |= TRACK_SESSION;
+            if (mTracks[i]->isFastTrack()) {
+                result |= FAST_SESSION;
+            }
             break;
         }
     }
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index c56c74a..a55655f 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -301,8 +301,10 @@
                 enum effect_state {
                     EFFECT_SESSION = 0x1,   // the audio session corresponds to at least one
                                             // effect
-                    TRACK_SESSION = 0x2     // the audio session corresponds to at least one
+                    TRACK_SESSION = 0x2,    // the audio session corresponds to at least one
                                             // track
+                    FAST_SESSION = 0x4      // the audio session corresponds to at least one
+                                            // fast track
                 };
 
                 // get effect chain corresponding to session Id.
@@ -335,9 +337,16 @@
                 void removeEffect_l(const sp< EffectModule>& effect);
                 // detach all tracks connected to an auxiliary effect
     virtual     void detachAuxEffect_l(int effectId __unused) {}
-                // returns either EFFECT_SESSION if effects on this audio session exist in one
-                // chain, or TRACK_SESSION if tracks on this audio session exist, or both
-                virtual uint32_t hasAudioSession(audio_session_t sessionId) const = 0;
+                // returns a combination of:
+                // - EFFECT_SESSION if effects on this audio session exist in one chain
+                // - TRACK_SESSION if tracks on this audio session exist
+                // - FAST_SESSION if fast tracks on this audio session exist
+    virtual     uint32_t hasAudioSession_l(audio_session_t sessionId) const = 0;
+                uint32_t hasAudioSession(audio_session_t sessionId) const {
+                    Mutex::Autolock _l(mLock);
+                    return hasAudioSession_l(sessionId);
+                }
+
                 // the value returned by default implementation is not important as the
                 // strategy is only meaningful for PlaybackThread which implements this method
                 virtual uint32_t getStrategyForSession_l(audio_session_t sessionId __unused)
@@ -374,6 +383,10 @@
 
                         void systemReady();
 
+                // checkEffectCompatibility_l() must be called with ThreadBase::mLock held
+                virtual status_t    checkEffectCompatibility_l(const effect_descriptor_t *desc,
+                                                               audio_session_t sessionId) = 0;
+
     mutable     Mutex                   mLock;
 
 protected:
@@ -493,6 +506,8 @@
     static const int8_t kMaxTrackRetriesOffload = 20;
     static const int8_t kMaxTrackStartupRetriesOffload = 100;
     static const int8_t kMaxTrackStopRetriesOffload = 2;
+    // 14 tracks max per client allows for 2 misbehaving application leaving 4 available tracks.
+    static const uint32_t kMaxTracksPerUid = 14;
 
     PlaybackThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
                    audio_io_handle_t id, audio_devices_t device, type_t type, bool systemReady);
@@ -506,6 +521,9 @@
     // RefBase
     virtual     void        onFirstRef();
 
+    virtual     status_t    checkEffectCompatibility_l(const effect_descriptor_t *desc,
+                                                       audio_session_t sessionId);
+
 protected:
     // Code snippets that were lifted up out of threadLoop()
     virtual     void        threadLoop_mix() = 0;
@@ -527,6 +545,7 @@
                 void        resetWriteBlocked(uint32_t sequence);
                 void        drainCallback();
                 void        resetDraining(uint32_t sequence);
+                void        errorCallback();
 
     static      int         asyncCallback(stream_callback_event_t event, void *param, void *cookie);
 
@@ -534,6 +553,7 @@
     virtual     bool        waitingAsyncCallback_l();
     virtual     bool        shouldStandby_l();
     virtual     void        onAddNewTrack_l();
+                void        onAsyncError(); // error reported by AsyncCallbackThread
 
     // ThreadBase virtuals
     virtual     void        preExit();
@@ -566,7 +586,7 @@
                                 size_t *pFrameCount,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_session_t sessionId,
-                                IAudioFlinger::track_flags_t *flags,
+                                audio_output_flags_t *flags,
                                 pid_t tid,
                                 int uid,
                                 status_t *status /*non-NULL*/);
@@ -605,7 +625,7 @@
 
                 virtual status_t addEffectChain_l(const sp<EffectChain>& chain);
                 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain);
-                virtual uint32_t hasAudioSession(audio_session_t sessionId) const;
+                virtual uint32_t hasAudioSession_l(audio_session_t sessionId) const;
                 virtual uint32_t getStrategyForSession_l(audio_session_t sessionId);
 
 
@@ -718,8 +738,8 @@
 
     // Allocate a track name for a given channel mask.
     //   Returns name >= 0 if successful, -1 on failure.
-    virtual int             getTrackName_l(audio_channel_mask_t channelMask,
-                                           audio_format_t format, audio_session_t sessionId) = 0;
+    virtual int             getTrackName_l(audio_channel_mask_t channelMask, audio_format_t format,
+                                           audio_session_t sessionId, uid_t uid) = 0;
     virtual void            deleteTrackName_l(int name) = 0;
 
     // Time to sleep between cycles when:
@@ -749,6 +769,8 @@
                                     && mHwSupportsPause
                                     && (mOutput->flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC); }
 
+                uint32_t    trackCountForUid_l(uid_t uid);
+
 private:
 
     friend class AudioFlinger;      // for numerous
@@ -871,8 +893,8 @@
 
 protected:
     virtual     mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove);
-    virtual     int         getTrackName_l(audio_channel_mask_t channelMask,
-                                           audio_format_t format, audio_session_t sessionId);
+    virtual     int         getTrackName_l(audio_channel_mask_t channelMask, audio_format_t format,
+                                           audio_session_t sessionId, uid_t uid);
     virtual     void        deleteTrackName_l(int name);
     virtual     uint32_t    idleSleepTimeUs() const;
     virtual     uint32_t    suspendSleepTimeUs() const;
@@ -951,8 +973,8 @@
     virtual     void        flushHw_l();
 
 protected:
-    virtual     int         getTrackName_l(audio_channel_mask_t channelMask,
-                                           audio_format_t format, audio_session_t sessionId);
+    virtual     int         getTrackName_l(audio_channel_mask_t channelMask, audio_format_t format,
+                                           audio_session_t sessionId, uid_t uid);
     virtual     void        deleteTrackName_l(int name);
     virtual     uint32_t    activeSleepTimeUs() const;
     virtual     uint32_t    idleSleepTimeUs() const;
@@ -1003,12 +1025,16 @@
     virtual     bool        waitingAsyncCallback_l();
     virtual     void        invalidateTracks(audio_stream_type_t streamType);
 
-    virtual     bool        keepWakeLock() const { return mKeepWakeLock; }
+    virtual     bool        keepWakeLock() const { return (mKeepWakeLock || (mDrainSequence & 1)); }
 
 private:
     size_t      mPausedWriteLength;     // length in bytes of write interrupted by pause
     size_t      mPausedBytesRemaining;  // bytes still waiting in mixbuffer after resume
     bool        mKeepWakeLock;          // keep wake lock while waiting for write callback
+    uint64_t    mOffloadUnderrunPosition; // Current frame position for offloaded playback
+                                          // used and valid only during underrun.  ~0 if
+                                          // no underrun has occurred during playback and
+                                          // is not reset on standby.
 };
 
 class AsyncCallbackThread : public Thread {
@@ -1029,6 +1055,7 @@
             void        resetWriteBlocked();
             void        setDraining(uint32_t sequence);
             void        resetDraining();
+            void        setAsyncError();
 
 private:
     const wp<PlaybackThread>   mPlaybackThread;
@@ -1042,6 +1069,7 @@
     uint32_t                   mDrainSequence;
     Condition                  mWaitWorkCV;
     Mutex                      mLock;
+    bool                       mAsyncError;
 };
 
 class DuplicatingThread : public MixerThread {
@@ -1259,7 +1287,7 @@
                     audio_session_t sessionId,
                     size_t *notificationFrames,
                     int uid,
-                    IAudioFlinger::track_flags_t *flags,
+                    audio_input_flags_t *flags,
                     pid_t tid,
                     status_t *status /*non-NULL*/);
 
@@ -1293,7 +1321,7 @@
 
     virtual status_t addEffectChain_l(const sp<EffectChain>& chain);
     virtual size_t removeEffectChain_l(const sp<EffectChain>& chain);
-    virtual uint32_t hasAudioSession(audio_session_t sessionId) const;
+    virtual uint32_t hasAudioSession_l(audio_session_t sessionId) const;
 
             // Return the set of unique session IDs across all tracks.
             // The keys are the session IDs, and the associated values are meaningless.
@@ -1309,6 +1337,9 @@
             bool        hasFastCapture() const { return mFastCapture != 0; }
     virtual void        getAudioPortConfig(struct audio_port_config *config);
 
+    virtual status_t    checkEffectCompatibility_l(const effect_descriptor_t *desc,
+                                                   audio_session_t sessionId);
+
 private:
             // Enter standby if not already in standby, and set mStandby flag
             void    standbyIfNotAlreadyInStandby();
diff --git a/services/audioflinger/TrackBase.h b/services/audioflinger/TrackBase.h
index 67a5e58..6b97246 100644
--- a/services/audioflinger/TrackBase.h
+++ b/services/audioflinger/TrackBase.h
@@ -63,7 +63,6 @@
                                 void *buffer,
                                 audio_session_t sessionId,
                                 int uid,
-                                IAudioFlinger::track_flags_t flags,
                                 bool isOut,
                                 alloc_type alloc = ALLOC_CBLK,
                                 track_type type = TYPE_DEFAULT);
@@ -81,7 +80,7 @@
 
             sp<IMemory> getBuffers() const { return mBufferMemory; }
             void*       buffer() const { return mBuffer; }
-            bool        isFastTrack() const { return (mFlags & IAudioFlinger::TRACK_FAST) != 0; }
+    virtual bool        isFastTrack() const = 0;
             bool        isOutputTrack() const { return (mType == TYPE_OUTPUT); }
             bool        isPatchTrack() const { return (mType == TYPE_PATCH); }
             bool        isExternalTrack() const { return !isOutputTrack() && !isPatchTrack(); }
@@ -156,7 +155,6 @@
     const audio_session_t mSessionId;
     int                 mUid;
     Vector < sp<SyncEvent> >mSyncEvents;
-    const IAudioFlinger::track_flags_t mFlags;
     const bool          mIsOut;
     ServerProxy*        mServerProxy;
     const int           mId;
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index 364e339..ba6e6e5 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -73,7 +73,6 @@
             void *buffer,
             audio_session_t sessionId,
             int clientUid,
-            IAudioFlinger::track_flags_t flags,
             bool isOut,
             alloc_type alloc,
             track_type type)
@@ -93,7 +92,6 @@
                 mChannelCount * audio_bytes_per_sample(format) : sizeof(int8_t)),
         mFrameCount(frameCount),
         mSessionId(sessionId),
-        mFlags(flags),
         mIsOut(isOut),
         mServerProxy(NULL),
         mId(android_atomic_inc(&nextTrackId)),
@@ -345,11 +343,11 @@
             const sp<IMemory>& sharedBuffer,
             audio_session_t sessionId,
             int uid,
-            IAudioFlinger::track_flags_t flags,
+            audio_output_flags_t flags,
             track_type type)
     :   TrackBase(thread, client, sampleRate, format, channelMask, frameCount,
                   (sharedBuffer != 0) ? sharedBuffer->pointer() : buffer,
-                  sessionId, uid, flags, true /*isOut*/,
+                  sessionId, uid, true /*isOut*/,
                   (type == TYPE_PATCH) ? ( buffer == NULL ? ALLOC_LOCAL : ALLOC_NONE) : ALLOC_CBLK,
                   type),
     mFillingUpStatus(FS_INVALID),
@@ -368,7 +366,8 @@
     mIsInvalid(false),
     mAudioTrackServerProxy(NULL),
     mResumeToStopping(false),
-    mFlushHwPending(false)
+    mFlushHwPending(false),
+    mFlags(flags)
 {
     // client == 0 implies sharedBuffer == 0
     ALOG_ASSERT(!(client == 0 && sharedBuffer != 0));
@@ -389,13 +388,13 @@
     }
     mServerProxy = mAudioTrackServerProxy;
 
-    mName = thread->getTrackName_l(channelMask, format, sessionId);
+    mName = thread->getTrackName_l(channelMask, format, sessionId, uid);
     if (mName < 0) {
         ALOGE("no more track names available");
         return;
     }
     // only allocate a fast track index if we were able to allocate a normal track name
-    if (flags & IAudioFlinger::TRACK_FAST) {
+    if (flags & AUDIO_OUTPUT_FLAG_FAST) {
         // FIXME: Not calling framesReadyIsCalledByMultipleThreads() exposes a potential
         // race with setSyncEvent(). However, if we call it, we cannot properly start
         // static fast tracks (SoundPool) immediately after stopping.
@@ -778,6 +777,13 @@
         Mutex::Autolock _l(thread->mLock);
         PlaybackThread *playbackThread = (PlaybackThread *)thread.get();
 
+        // Flush the ring buffer now if the track is not active in the PlaybackThread.
+        // Otherwise the flush would not be done until the track is resumed.
+        // Requires FastTrack removal be BLOCK_UNTIL_ACKED
+        if (playbackThread->mActiveTracks.indexOf(this) < 0) {
+            (void)mServerProxy->flushBufferIfNeeded();
+        }
+
         if (isOffloaded()) {
             // If offloaded we allow flush during any state except terminated
             // and keep the track active to avoid problems if user is seeking
@@ -829,6 +835,10 @@
     if (!isOffloaded() && !isDirect())
         return;
 
+    // Clear the client ring buffer so that the app can prime the buffer while paused.
+    // Otherwise it might not get cleared until playback is resumed and obtainBuffer() is called.
+    mServerProxy->flushBufferIfNeeded();
+
     mFlushHwPending = false;
 }
 
@@ -1133,7 +1143,7 @@
             int uid)
     :   Track(playbackThread, NULL, AUDIO_STREAM_PATCH,
               sampleRate, format, channelMask, frameCount,
-              NULL, 0, AUDIO_SESSION_NONE, uid, IAudioFlinger::TRACK_DEFAULT,
+              NULL, 0, AUDIO_SESSION_NONE, uid, AUDIO_OUTPUT_FLAG_NONE,
               TYPE_OUTPUT),
     mActive(false), mSourceThread(sourceThread), mClientProxy(NULL)
 {
@@ -1329,7 +1339,7 @@
                                                      audio_format_t format,
                                                      size_t frameCount,
                                                      void *buffer,
-                                                     IAudioFlinger::track_flags_t flags)
+                                                     audio_output_flags_t flags)
     :   Track(playbackThread, NULL, streamType,
               sampleRate, format, channelMask, frameCount,
               buffer, 0, AUDIO_SESSION_NONE, getuid(), flags, TYPE_PATCH),
@@ -1468,19 +1478,19 @@
             void *buffer,
             audio_session_t sessionId,
             int uid,
-            IAudioFlinger::track_flags_t flags,
+            audio_input_flags_t flags,
             track_type type)
     :   TrackBase(thread, client, sampleRate, format,
-                  channelMask, frameCount, buffer, sessionId, uid,
-                  flags, false /*isOut*/,
+                  channelMask, frameCount, buffer, sessionId, uid, false /*isOut*/,
                   (type == TYPE_DEFAULT) ?
-                          ((flags & IAudioFlinger::TRACK_FAST) ? ALLOC_PIPE : ALLOC_CBLK) :
+                          ((flags & AUDIO_INPUT_FLAG_FAST) ? ALLOC_PIPE : ALLOC_CBLK) :
                           ((buffer == NULL) ? ALLOC_LOCAL : ALLOC_NONE),
                   type),
         mOverflow(false),
         mFramesToDrop(0),
         mResamplerBufferProvider(NULL), // initialize in case of early constructor exit
-        mRecordBufferConverter(NULL)
+        mRecordBufferConverter(NULL),
+        mFlags(flags)
 {
     if (mCblk == NULL) {
         return;
@@ -1505,7 +1515,7 @@
 
     mResamplerBufferProvider = new ResamplerBufferProvider(this);
 
-    if (flags & IAudioFlinger::TRACK_FAST) {
+    if (flags & AUDIO_INPUT_FLAG_FAST) {
         ALOG_ASSERT(thread->mFastTrackAvail);
         thread->mFastTrackAvail = false;
     }
@@ -1664,7 +1674,7 @@
                                                      audio_format_t format,
                                                      size_t frameCount,
                                                      void *buffer,
-                                                     IAudioFlinger::track_flags_t flags)
+                                                     audio_input_flags_t flags)
     :   RecordTrack(recordThread, NULL, sampleRate, format, channelMask, frameCount,
                 buffer, AUDIO_SESSION_NONE, getuid(), flags, TYPE_PATCH),
                 mProxy(new ClientProxy(mCblk, mBuffer, frameCount, mFrameSize, false, true))
diff --git a/services/audioflinger/tests/resampler_tests.cpp b/services/audioflinger/tests/resampler_tests.cpp
index 9e375db..b0d384d 100644
--- a/services/audioflinger/tests/resampler_tests.cpp
+++ b/services/audioflinger/tests/resampler_tests.cpp
@@ -17,22 +17,25 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "audioflinger_resampler_tests"
 
-#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <fcntl.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
-#include <errno.h>
 #include <time.h>
-#include <math.h>
-#include <vector>
-#include <utility>
+#include <unistd.h>
+
 #include <iostream>
-#include <cutils/log.h>
+#include <utility>
+#include <vector>
+
 #include <gtest/gtest.h>
+#include <log/log.h>
 #include <media/AudioBufferProvider.h>
+
 #include "AudioResampler.h"
 #include "test_utils.h"
 
diff --git a/services/audioflinger/tests/test_utils.h b/services/audioflinger/tests/test_utils.h
index 283c768..b61a929 100644
--- a/services/audioflinger/tests/test_utils.h
+++ b/services/audioflinger/tests/test_utils.h
@@ -17,6 +17,12 @@
 #ifndef ANDROID_AUDIO_TEST_UTILS_H
 #define ANDROID_AUDIO_TEST_UTILS_H
 
+#ifndef LOG_TAG
+#define LOG_TAG "test_utils"
+#endif
+
+#include <log/log.h>
+
 #include <audio_utils/sndfile.h>
 
 #ifndef ARRAY_SIZE
diff --git a/services/audiopolicy/Android.mk b/services/audiopolicy/Android.mk
index 407a264..69d22c0 100644
--- a/services/audiopolicy/Android.mk
+++ b/services/audiopolicy/Android.mk
@@ -49,6 +49,7 @@
 LOCAL_MODULE:= libaudiopolicyservice
 
 LOCAL_CFLAGS += -fvisibility=hidden
+LOCAL_CFLAGS += -Wall -Werror
 
 include $(BUILD_SHARED_LIBRARY)
 
@@ -101,6 +102,8 @@
 LOCAL_CFLAGS += -DUSE_XML_AUDIO_POLICY_CONF
 endif #ifeq ($(USE_XML_AUDIO_POLICY_CONF), 1)
 
+LOCAL_CFLAGS += -Wall -Werror
+
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
 LOCAL_MODULE:= libaudiopolicymanagerdefault
@@ -124,6 +127,8 @@
     $(TOPDIR)frameworks/av/services/audiopolicy/common/include \
     $(TOPDIR)frameworks/av/services/audiopolicy/engine/interface
 
+LOCAL_CFLAGS := -Wall -Werror
+
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
 LOCAL_MODULE:= libaudiopolicymanager
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index bb8a8fa..d1b86da 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -81,6 +81,10 @@
     // retrieve a device connection status
     virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
                                                                           const char *device_address) = 0;
+    // indicate a change in device configuration
+    virtual status_t handleDeviceConfigChange(audio_devices_t device,
+                                              const char *device_address,
+                                              const char *device_name) = 0;
     // indicate a change in phone state. Valid phones states are defined by audio_mode_t
     virtual void setPhoneState(audio_mode_t state) = 0;
     // force using a specific device category for the specified usage
diff --git a/services/audiopolicy/common/managerdefinitions/Android.mk b/services/audiopolicy/common/managerdefinitions/Android.mk
index 8ca36ea..02118c4 100644
--- a/services/audiopolicy/common/managerdefinitions/Android.mk
+++ b/services/audiopolicy/common/managerdefinitions/Android.mk
@@ -63,6 +63,8 @@
 
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
+LOCAL_CFLAGS := -Wall -Werror
+
 LOCAL_MODULE := libaudiopolicycomponents
 
 include $(BUILD_STATIC_LIBRARY)
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
index ccea023..e689320 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
@@ -93,7 +93,9 @@
 
     sp<AudioInputDescriptor> getInputFromId(audio_port_handle_t id) const;
 
-    uint32_t activeInputsCount() const;
+    // count active capture sessions using one of the specified devices.
+    // ignore devices if AUDIO_DEVICE_IN_DEFAULT is passed
+    uint32_t activeInputsCountOnDevices(audio_devices_t devices = AUDIO_DEVICE_IN_DEFAULT) const;
 
     /**
      * return io handle of active input or 0 if no input is active
diff --git a/services/audiopolicy/common/managerdefinitions/include/TypeConverter.h b/services/audiopolicy/common/managerdefinitions/include/TypeConverter.h
index b828f81..1612714 100644
--- a/services/audiopolicy/common/managerdefinitions/include/TypeConverter.h
+++ b/services/audiopolicy/common/managerdefinitions/include/TypeConverter.h
@@ -131,6 +131,7 @@
 typedef TypeConverter<StreamTraits> StreamTypeConverter;
 typedef TypeConverter<DeviceCategoryTraits> DeviceCategoryConverter;
 
+inline
 static SampleRateTraits::Collection samplingRatesFromString(const std::string &samplingRates,
                                                             const char *del = "|")
 {
@@ -139,6 +140,7 @@
     return samplingRateCollection;
 }
 
+inline
 static FormatTraits::Collection formatsFromString(const std::string &formats, const char *del = "|")
 {
     FormatTraits::Collection formatCollection;
@@ -146,6 +148,7 @@
     return formatCollection;
 }
 
+inline
 static audio_format_t formatFromString(const std::string &literalFormat)
 {
     audio_format_t format;
@@ -156,6 +159,7 @@
     return format;
 }
 
+inline
 static audio_channel_mask_t channelMaskFromString(const std::string &literalChannels)
 {
     audio_channel_mask_t channels;
@@ -166,6 +170,7 @@
     return channels;
 }
 
+inline
 static ChannelTraits::Collection channelMasksFromString(const std::string &channels,
                                                         const char *del = "|")
 {
@@ -176,6 +181,7 @@
     return channelMaskCollection;
 }
 
+inline
 static InputChannelTraits::Collection inputChannelMasksFromString(const std::string &inChannels,
                                                                   const char *del = "|")
 {
@@ -185,6 +191,7 @@
     return inputChannelMaskCollection;
 }
 
+inline
 static OutputChannelTraits::Collection outputChannelMasksFromString(const std::string &outChannels,
                                                                     const char *del = "|")
 {
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
index 6dacaa4..c7d2ee4 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
@@ -222,12 +222,14 @@
     return inputDesc;
 }
 
-uint32_t AudioInputCollection::activeInputsCount() const
+uint32_t AudioInputCollection::activeInputsCountOnDevices(audio_devices_t devices) const
 {
     uint32_t count = 0;
     for (size_t i = 0; i < size(); i++) {
         const sp<AudioInputDescriptor>  inputDescriptor = valueAt(i);
-        if (inputDescriptor->isActive()) {
+        if (inputDescriptor->isActive() &&
+                ((devices == AUDIO_DEVICE_IN_DEFAULT) ||
+                 ((inputDescriptor->mDevice & devices & ~AUDIO_DEVICE_BIT_IN) != 0))) {
             count++;
         }
     }
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp
index f382dec..6059009 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp
@@ -20,7 +20,8 @@
 #include "AudioPatch.h"
 #include "AudioGain.h"
 #include "TypeConverter.h"
-#include <cutils/log.h>
+
+#include <log/log.h>
 #include <utils/String8.h>
 
 namespace android {
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioSession.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioSession.cpp
index da983c5..a246c3d 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioSession.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioSession.cpp
@@ -21,7 +21,8 @@
 #include "AudioSession.h"
 #include "AudioGain.h"
 #include "TypeConverter.h"
-#include <cutils/log.h>
+
+#include <log/log.h>
 #include <utils/String8.h>
 
 namespace android {
diff --git a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
index b687f3e..ba2b9e3 100644
--- a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
@@ -104,7 +104,6 @@
 
 ssize_t DeviceVector::remove(const sp<DeviceDescriptor>& item)
 {
-    size_t i;
     ssize_t ret = indexOf(item);
 
     if (ret < 0) {
diff --git a/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp b/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
index 3e5bb7d..2ecd6b1 100644
--- a/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
@@ -383,6 +383,7 @@
             sp<AudioPort> source = ctx->findPortByTagName(String8(devTag));
             if (source == NULL) {
                 ALOGE("%s: no source found with name=%s", __FUNCTION__, devTag);
+                free(sourcesLiteral);
                 return BAD_VALUE;
             }
             sources.add(source);
diff --git a/services/audiopolicy/common/managerdefinitions/src/TypeConverter.cpp b/services/audiopolicy/common/managerdefinitions/src/TypeConverter.cpp
index f639551..48bfd79 100644
--- a/services/audiopolicy/common/managerdefinitions/src/TypeConverter.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/TypeConverter.cpp
@@ -142,6 +142,7 @@
     MAKE_STRING_FROM_ENUM(AUDIO_FORMAT_DTS),
     MAKE_STRING_FROM_ENUM(AUDIO_FORMAT_DTS_HD),
     MAKE_STRING_FROM_ENUM(AUDIO_FORMAT_IEC61937),
+    MAKE_STRING_FROM_ENUM(AUDIO_FORMAT_DOLBY_TRUEHD),
 };
 template<>
 const size_t FormatConverter::mSize = sizeof(FormatConverter::mTable) /
diff --git a/services/audiopolicy/common/managerdefinitions/src/VolumeCurve.cpp b/services/audiopolicy/common/managerdefinitions/src/VolumeCurve.cpp
index ab2b51f..14caf7c 100644
--- a/services/audiopolicy/common/managerdefinitions/src/VolumeCurve.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/VolumeCurve.cpp
@@ -34,7 +34,8 @@
     // Where would this volume index been inserted in the curve point
     size_t indexInUiPosition = mCurvePoints.orderOf(CurvePoint(volIdx, 0));
     if (indexInUiPosition >= nbCurvePoints) {
-        return 0.0f; // out of bounds
+        //use last point of table
+        return mCurvePoints[nbCurvePoints - 1].mAttenuationInMb / 100.0f;
     }
     if (indexInUiPosition == 0) {
         if (indexInUiPosition != mCurvePoints[0].mIndex) {
diff --git a/services/audiopolicy/config/a2dp_audio_policy_configuration.xml b/services/audiopolicy/config/a2dp_audio_policy_configuration.xml
index ced7463..7bcab5c 100644
--- a/services/audiopolicy/config/a2dp_audio_policy_configuration.xml
+++ b/services/audiopolicy/config/a2dp_audio_policy_configuration.xml
@@ -2,11 +2,7 @@
 <!-- A2dp Audio HAL Audio Policy Configuration file -->
 <module name="a2dp" halVersion="2.0">
     <mixPorts>
-        <mixPort name="a2dp output" role="source">
-            <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
-                     samplingRates="44100"
-                     channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
-        </mixPort>
+        <mixPort name="a2dp output" role="source"/>
         <mixPort name="a2dp input" role="sink">
             <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                      samplingRates="44100,48000"
diff --git a/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp b/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp
index 6872e52..fe15d86 100755
--- a/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp
+++ b/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp
@@ -48,7 +48,7 @@
 
     virtual void info(const string &log)
     {
-        ALOGD("policy-parameter-manager: %s", log.c_str());
+        ALOGV("policy-parameter-manager: %s", log.c_str());
     }
     virtual void warning(const string &log)
     {
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 696ac5e..f64c4f9 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -49,6 +49,9 @@
 
 namespace android {
 
+//FIXME: workaround for truncated touch sounds
+// to be removed when the problem is handled by system UI
+#define TOUCH_SOUND_FIXED_DELAY_MS 100
 // ----------------------------------------------------------------------------
 // AudioPolicyInterface implementation
 // ----------------------------------------------------------------------------
@@ -281,6 +284,9 @@
         }
 
         closeAllInputs();
+        // As the input device list can impact the output device selection, update
+        // getDeviceForStrategy() cache
+        updateDevicesAndOutputs();
 
         if (mEngine->getPhoneState() == AUDIO_MODE_IN_CALL && hasPrimaryOutput()) {
             audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, false /*fromCache*/);
@@ -327,15 +333,60 @@
             AUDIO_POLICY_DEVICE_STATE_AVAILABLE : AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
 }
 
-void AudioPolicyManager::updateCallRouting(audio_devices_t rxDevice, int delayMs)
+status_t AudioPolicyManager::handleDeviceConfigChange(audio_devices_t device,
+                                                      const char *device_address,
+                                                      const char *device_name)
+{
+    status_t status;
+
+    ALOGV("handleDeviceConfigChange(() device: 0x%X, address %s name %s",
+          device, device_address, device_name);
+
+    // connect/disconnect only 1 device at a time
+    if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE;
+
+    // Check if the device is currently connected
+    sp<DeviceDescriptor> devDesc =
+            mHwModules.getDeviceDescriptor(device, device_address, device_name);
+    ssize_t index = mAvailableOutputDevices.indexOf(devDesc);
+    if (index < 0) {
+        // Nothing to do: device is not connected
+        return NO_ERROR;
+    }
+
+    // Toggle the device state: UNAVAILABLE -> AVAILABLE
+    // This will force reading again the device configuration
+    status = setDeviceConnectionState(device,
+                                      AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
+                                      device_address, device_name);
+    if (status != NO_ERROR) {
+        ALOGW("handleDeviceConfigChange() error disabling connection state: %d",
+              status);
+        return status;
+    }
+
+    status = setDeviceConnectionState(device,
+                                      AUDIO_POLICY_DEVICE_STATE_AVAILABLE,
+                                      device_address, device_name);
+    if (status != NO_ERROR) {
+        ALOGW("handleDeviceConfigChange() error enabling connection state: %d",
+              status);
+        return status;
+    }
+
+    return NO_ERROR;
+}
+
+uint32_t AudioPolicyManager::updateCallRouting(audio_devices_t rxDevice, uint32_t delayMs)
 {
     bool createTxPatch = false;
     status_t status;
     audio_patch_handle_t afPatchHandle;
     DeviceVector deviceList;
+    uint32_t muteWaitMs = 0;
 
     if(!hasPrimaryOutput()) {
-        return;
+        return muteWaitMs;
     }
     audio_devices_t txDevice = getDeviceAndMixForInputSource(AUDIO_SOURCE_VOICE_COMMUNICATION);
     ALOGV("updateCallRouting device rxDevice %08x txDevice %08x", rxDevice, txDevice);
@@ -355,7 +406,7 @@
     // via setOutputDevice() on primary output.
     // Otherwise, create two audio patches for TX and RX path.
     if (availablePrimaryOutputDevices() & rxDevice) {
-        setOutputDevice(mPrimaryOutput, rxDevice, true, delayMs);
+        muteWaitMs = setOutputDevice(mPrimaryOutput, rxDevice, true, delayMs);
         // If the TX device is also on the primary HW module, setOutputDevice() will take care
         // of it due to legacy implementation. If not, create a patch.
         if ((availablePrimaryInputDevices() & txDevice & ~AUDIO_DEVICE_BIT_IN)
@@ -395,7 +446,7 @@
         }
 
         afPatchHandle = AUDIO_PATCH_HANDLE_NONE;
-        status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, 0);
+        status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, delayMs);
         ALOGW_IF(status != NO_ERROR, "updateCallRouting() error %d creating RX audio patch",
                                                status);
         if (status == NO_ERROR) {
@@ -454,7 +505,7 @@
         }
 
         afPatchHandle = AUDIO_PATCH_HANDLE_NONE;
-        status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, 0);
+        status = mpClientInterface->createAudioPatch(&patch, &afPatchHandle, delayMs);
         ALOGW_IF(status != NO_ERROR, "setPhoneState() error %d creating TX audio patch",
                                                status);
         if (status == NO_ERROR) {
@@ -463,6 +514,8 @@
             mCallTxPatch->mUid = mUidCached;
         }
     }
+
+    return muteWaitMs;
 }
 
 void AudioPolicyManager::setPhoneState(audio_mode_t state)
@@ -595,18 +648,26 @@
     checkOutputForAllStrategies();
     updateDevicesAndOutputs();
 
+    //FIXME: workaround for truncated touch sounds
+    // to be removed when the problem is handled by system UI
+    uint32_t delayMs = 0;
+    uint32_t waitMs = 0;
+    if (usage == AUDIO_POLICY_FORCE_FOR_COMMUNICATION) {
+        delayMs = TOUCH_SOUND_FIXED_DELAY_MS;
+    }
     if (mEngine->getPhoneState() == AUDIO_MODE_IN_CALL && hasPrimaryOutput()) {
         audio_devices_t newDevice = getNewOutputDevice(mPrimaryOutput, true /*fromCache*/);
-        updateCallRouting(newDevice);
+        waitMs = updateCallRouting(newDevice, delayMs);
     }
     for (size_t i = 0; i < mOutputs.size(); i++) {
         sp<SwAudioOutputDescriptor> outputDesc = mOutputs.valueAt(i);
         audio_devices_t newDevice = getNewOutputDevice(outputDesc, true /*fromCache*/);
         if ((mEngine->getPhoneState() != AUDIO_MODE_IN_CALL) || (outputDesc != mPrimaryOutput)) {
-            setOutputDevice(outputDesc, newDevice, (newDevice != AUDIO_DEVICE_NONE));
+            waitMs = setOutputDevice(outputDesc, newDevice, (newDevice != AUDIO_DEVICE_NONE),
+                                     delayMs);
         }
         if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) {
-            applyStreamVolumes(outputDesc, newDevice, 0, true);
+            applyStreamVolumes(outputDesc, newDevice, waitMs, true);
         }
     }
 
@@ -786,7 +847,6 @@
         const audio_offload_info_t *offloadInfo)
 {
     audio_io_handle_t output = AUDIO_IO_HANDLE_NONE;
-    uint32_t latency = 0;
     status_t status;
 
 #ifdef AUDIO_POLICY_TEST
@@ -1165,8 +1225,10 @@
         beaconMuteLatency = handleEventForBeacon(STARTING_OUTPUT);
     }
 
+    // force device change if the output is inactive and no audio patch is already present.
     // check active before incrementing usage count
-    bool force = !outputDesc->isActive();
+    bool force = !outputDesc->isActive() &&
+            (outputDesc->getPatchHandle() == AUDIO_PATCH_HANDLE_NONE);
 
     // increment usage count for this stream on the requested output:
     // NOTE that the usage count is the same for duplicated output and hardware output which is
@@ -1186,12 +1248,17 @@
         for (size_t i = 0; i < mOutputs.size(); i++) {
             sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i);
             if (desc != outputDesc) {
-                // force a device change if any other output is managed by the same hw
-                // module and has a current device selection that differs from selected device.
+                // force a device change if any other output is:
+                // - managed by the same hw module
+                // - has a current device selection that differs from selected device.
+                // - supports currently selected device
+                // - has an active audio patch
                 // In this case, the audio HAL must receive the new device selection so that it can
                 // change the device currently selected by the other active output.
                 if (outputDesc->sharesHwModuleWith(desc) &&
-                    desc->device() != device) {
+                        desc->device() != device &&
+                        desc->supportedDevices() & device &&
+                        desc->getPatchHandle() != AUDIO_PATCH_HANDLE_NONE) {
                     force = true;
                 }
                 // wait for audio on other active outputs to be presented when starting
@@ -1224,7 +1291,12 @@
         if (strategy == STRATEGY_SONIFICATION) {
             mpClientInterface->invalidateStream(AUDIO_STREAM_ACCESSIBILITY);
         }
+
+        if (waitMs > muteWaitMs) {
+            *delayMs = waitMs - muteWaitMs;
+        }
     }
+
     return NO_ERROR;
 }
 
@@ -1298,17 +1370,23 @@
 
             // force restoring the device selection on other active outputs if it differs from the
             // one being selected for this output
+            uint32_t delayMs = outputDesc->latency()*2;
             for (size_t i = 0; i < mOutputs.size(); i++) {
-                audio_io_handle_t curOutput = mOutputs.keyAt(i);
                 sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i);
                 if (desc != outputDesc &&
                         desc->isActive() &&
                         outputDesc->sharesHwModuleWith(desc) &&
                         (newDevice != desc->device())) {
+                    audio_devices_t newDevice2 = getNewOutputDevice(desc, false /*fromCache*/);
+                    bool force = desc->device() != newDevice2;
                     setOutputDevice(desc,
-                                    getNewOutputDevice(desc, false /*fromCache*/),
-                                    true,
-                                    outputDesc->latency()*2);
+                                    newDevice2,
+                                    force,
+                                    delayMs);
+                    // re-apply device specific volume if not done by setOutputDevice()
+                    if (!force) {
+                        applyStreamVolumes(desc, newDevice2, delayMs);
+                    }
                 }
             }
             // update the outputs if stopping one with a stream that can affect notification routing
@@ -1499,6 +1577,8 @@
                                   profileFlags);
         if (profile != 0) {
             break; // success
+        } else if (profileFlags & AUDIO_INPUT_FLAG_RAW) {
+            profileFlags = (audio_input_flags_t) (profileFlags & ~AUDIO_INPUT_FLAG_RAW); // retry
         } else if (profileFlags != AUDIO_INPUT_FLAG_NONE) {
             profileFlags = AUDIO_INPUT_FLAG_NONE; // retry
         } else { // fail
@@ -1663,10 +1743,15 @@
                     MIX_STATE_MIXING);
         }
 
-        if (mInputs.activeInputsCount() == 0) {
+        // indicate active capture to sound trigger service if starting capture from a mic on
+        // primary HW module
+        audio_devices_t device = getNewInputDevice(input);
+        audio_devices_t primaryInputDevices = availablePrimaryInputDevices();
+        if (((device & primaryInputDevices & ~AUDIO_DEVICE_BIT_IN) != 0) &&
+                mInputs.activeInputsCountOnDevices(primaryInputDevices) == 0) {
             SoundTrigger::setCaptureState(true);
         }
-        setInputDevice(input, getNewInputDevice(input), true /* force */);
+        setInputDevice(input, device, true /* force */);
 
         // automatically enable the remote submix output when input is started if not
         // used by a policy mix of type MIX_TYPE_RECORDERS
@@ -1743,9 +1828,14 @@
             }
         }
 
+        audio_devices_t device = inputDesc->mDevice;
         resetInputDevice(input);
 
-        if (mInputs.activeInputsCount() == 0) {
+        // indicate inactive capture to sound trigger service if stopping capture from a mic on
+        // primary HW module
+        audio_devices_t primaryInputDevices = availablePrimaryInputDevices();
+        if (((device & primaryInputDevices & ~AUDIO_DEVICE_BIT_IN) != 0) &&
+                mInputs.activeInputsCountOnDevices(primaryInputDevices) == 0) {
             SoundTrigger::setCaptureState(false);
         }
         inputDesc->clearPreemptedSessions();
@@ -1804,7 +1894,7 @@
         ssize_t patch_index = mAudioPatches.indexOfKey(inputDesc->getPatchHandle());
         if (patch_index >= 0) {
             sp<AudioPatch> patchDesc = mAudioPatches.valueAt(patch_index);
-            status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
+            (void) /*status_t status*/ mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
             mAudioPatches.removeItemsAt(patch_index);
             patchRemoved = true;
         }
@@ -1883,21 +1973,27 @@
                 continue;
             }
             routing_strategy curStrategy = getStrategy((audio_stream_type_t)curStream);
-            audio_devices_t curStreamDevice = getDeviceForStrategy(curStrategy, true /*fromCache*/);
-            if ((curStreamDevice & device) == 0) {
+            audio_devices_t curStreamDevice = getDeviceForStrategy(curStrategy, false /*fromCache*/);
+            if ((device != AUDIO_DEVICE_OUT_DEFAULT_FOR_VOLUME) &&
+                    ((curStreamDevice & device) == 0)) {
                 continue;
             }
-            bool applyDefault = false;
+            bool applyVolume;
             if (device != AUDIO_DEVICE_OUT_DEFAULT_FOR_VOLUME) {
                 curStreamDevice |= device;
-            } else if (!mVolumeCurves->hasVolumeIndexForDevice(
-                    stream, Volume::getDeviceForVolume(curStreamDevice))) {
-                applyDefault = true;
+                applyVolume = (curDevice & curStreamDevice) != 0;
+            } else {
+                applyVolume = !mVolumeCurves->hasVolumeIndexForDevice(
+                        stream, Volume::getDeviceForVolume(curStreamDevice));
             }
 
-            if (applyDefault || ((curDevice & curStreamDevice) != 0)) {
+            if (applyVolume) {
+                //FIXME: workaround for truncated touch sounds
+                // delayed volume change for system stream to be removed when the problem is
+                // handled by system UI
                 status_t volStatus =
-                        checkAndSetVolume((audio_stream_type_t)curStream, index, desc, curDevice);
+                        checkAndSetVolume((audio_stream_type_t)curStream, index, desc, curDevice,
+                            (stream == AUDIO_STREAM_SYSTEM) ? TOUCH_SOUND_FIXED_DELAY_MS : 0);
                 if (volStatus != NO_ERROR) {
                     status = volStatus;
                 }
@@ -2717,7 +2813,6 @@
                            true,
                            NULL);
         } else if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE) {
-            audio_patch_handle_t afPatchHandle = patchDesc->mAfPatchHandle;
             status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
             ALOGV("releaseAudioPatch() patch panel returned %d patchHandle %d",
                                                               status, patchDesc->mAfPatchHandle);
@@ -3196,6 +3291,7 @@
     }
     mEngine->setObserver(this);
     status_t status = mEngine->initCheck();
+    (void) status;
     ALOG_ASSERT(status == NO_ERROR, "Policy engine not initialized(err=%d)", status);
 
     // mAvailableOutputDevices and mAvailableInputDevices now contain all attached devices
@@ -4075,7 +4171,7 @@
     ssize_t index = mAudioPatches.indexOfKey(outputDesc->getPatchHandle());
     if (index >= 0) {
         sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index);
-        status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
+        (void) /*status_t status*/ mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
         mAudioPatches.removeItemsAt(index);
         mpClientInterface->onAudioPatchListUpdate();
     }
@@ -4104,7 +4200,7 @@
     ssize_t index = mAudioPatches.indexOfKey(inputDesc->getPatchHandle());
     if (index >= 0) {
         sp<AudioPatch> patchDesc = mAudioPatches.valueAt(index);
-        status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
+        (void) /*status_t status*/ mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
         mAudioPatches.removeItemsAt(index);
         mpClientInterface->onAudioPatchListUpdate();
     }
@@ -4121,7 +4217,7 @@
 
     ALOGVV("getOutputsForDevice() device %04x", device);
     for (size_t i = 0; i < openOutputs.size(); i++) {
-        ALOGVV("output %d isDuplicated=%d device=%04x",
+        ALOGVV("output %zu isDuplicated=%d device=%04x",
                 i, openOutputs.valueAt(i)->isDuplicated(),
                 openOutputs.valueAt(i)->supportedDevices());
         if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) {
@@ -4384,7 +4480,7 @@
         }
         routing_strategy curStrategy = getStrategy((audio_stream_type_t)curStream);
         audio_devices_t curDevices =
-                getDeviceForStrategy((routing_strategy)curStrategy, true /*fromCache*/);
+                getDeviceForStrategy((routing_strategy)curStrategy, false /*fromCache*/);
         SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(curDevices, mOutputs);
         for (size_t i = 0; i < outputs.size(); i++) {
             sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(outputs[i]);
@@ -4562,7 +4658,7 @@
                         == AUDIO_DEVICE_NONE) {
                     continue;
                 }
-                ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x)",
+                ALOGVV("checkDeviceMuteStrategies() %s strategy %zu (curDevice %04x)",
                       mute ? "muting" : "unmuting", i, curDevice);
                 setStrategyMute((routing_strategy)i, mute, desc, mute ? 0 : delayMs);
                 if (isStrategyActive(desc, (routing_strategy)i)) {
@@ -4584,15 +4680,20 @@
     // temporary mute output if device selection changes to avoid volume bursts due to
     // different per device volumes
     if (outputDesc->isActive() && (device != prevDevice)) {
-        if (muteWaitMs < outputDesc->latency() * 2) {
-            muteWaitMs = outputDesc->latency() * 2;
+        uint32_t tempMuteWaitMs = outputDesc->latency() * 2;
+        // temporary mute duration is conservatively set to 4 times the reported latency
+        uint32_t tempMuteDurationMs = outputDesc->latency() * 4;
+        if (muteWaitMs < tempMuteWaitMs) {
+            muteWaitMs = tempMuteWaitMs;
         }
+
         for (size_t i = 0; i < NUM_STRATEGIES; i++) {
             if (isStrategyActive(outputDesc, (routing_strategy)i)) {
-                setStrategyMute((routing_strategy)i, true, outputDesc);
-                // do tempMute unmute after twice the mute wait time
+                // make sure that we do not start the temporary mute period too early in case of
+                // delayed device change
+                setStrategyMute((routing_strategy)i, true, outputDesc, delayMs);
                 setStrategyMute((routing_strategy)i, false, outputDesc,
-                                muteWaitMs *2, device);
+                                delayMs + tempMuteDurationMs, device);
             }
         }
     }
@@ -4910,6 +5011,18 @@
                                         audio_devices_t device)
 {
     float volumeDB = mVolumeCurves->volIndexToDb(stream, Volume::getDeviceCategory(device), index);
+
+    // handle the case of accessibility active while a ringtone is playing: if the ringtone is much
+    // louder than the accessibility prompt, the prompt cannot be heard, thus masking the touch
+    // exploration of the dialer UI. In this situation, bring the accessibility volume closer to
+    // the ringtone volume
+    if ((stream == AUDIO_STREAM_ACCESSIBILITY)
+            && (AUDIO_MODE_RINGTONE == mEngine->getPhoneState())
+            && isStreamActive(AUDIO_STREAM_RING, 0)) {
+        const float ringVolumeDB = computeVolume(AUDIO_STREAM_RING, index, device);
+        return ringVolumeDB - 4 > volumeDB ? ringVolumeDB - 4 : volumeDB;
+    }
+
     // if a headset is connected, apply the following rules to ring tones and notifications
     // to avoid sound level bursts in user's ears:
     // - always attenuate notifications volume by 6dB
@@ -5409,7 +5522,6 @@
                                              AudioProfileVector &profiles)
 {
     String8 reply;
-    char *value;
 
     // Format MUST be checked first to update the list of AudioProfile
     if (profiles.hasDynamicFormat()) {
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 5e801af..3cfe508 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -93,6 +93,9 @@
                                                           const char *device_name);
         virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
                                                                               const char *device_address);
+        virtual status_t handleDeviceConfigChange(audio_devices_t device,
+                                                  const char *device_address,
+                                                  const char *device_name);
         virtual void setPhoneState(audio_mode_t state);
         virtual void setForceUse(audio_policy_force_use_t usage,
                                  audio_policy_forced_cfg_t config);
@@ -477,7 +480,7 @@
             return mAvailableInputDevices.getDevicesFromHwModule(mPrimaryOutput->getModuleHandle());
         }
 
-        void updateCallRouting(audio_devices_t rxDevice, int delayMs = 0);
+        uint32_t updateCallRouting(audio_devices_t rxDevice, uint32_t delayMs = 0);
 
         // if argument "device" is different from AUDIO_DEVICE_NONE,  startSource() will force
         // the re-evaluation of the output device.
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 451ce84..c5323d1 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -37,9 +37,6 @@
     if (!settingsAllowed()) {
         return PERMISSION_DENIED;
     }
-    if (!audio_is_output_device(device) && !audio_is_input_device(device)) {
-        return BAD_VALUE;
-    }
     if (state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE &&
             state != AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) {
         return BAD_VALUE;
@@ -62,6 +59,23 @@
                                                       device_address);
 }
 
+status_t AudioPolicyService::handleDeviceConfigChange(audio_devices_t device,
+                                                  const char *device_address,
+                                                  const char *device_name)
+{
+    if (mAudioPolicyManager == NULL) {
+        return NO_INIT;
+    }
+    if (!settingsAllowed()) {
+        return PERMISSION_DENIED;
+    }
+
+    ALOGV("handleDeviceConfigChange()");
+    Mutex::Autolock _l(mLock);
+    return mAudioPolicyManager->handleDeviceConfigChange(device, device_address,
+                                                         device_name);
+}
+
 status_t AudioPolicyService::setPhoneState(audio_mode_t state)
 {
     if (mAudioPolicyManager == NULL) {
diff --git a/services/audiopolicy/service/AudioPolicyService.cpp b/services/audiopolicy/service/AudioPolicyService.cpp
index 9cc8449..52ed73e 100644
--- a/services/audiopolicy/service/AudioPolicyService.cpp
+++ b/services/audiopolicy/service/AudioPolicyService.cpp
@@ -52,9 +52,11 @@
 
 static const nsecs_t kAudioCommandTimeoutNs = seconds(3); // 3 seconds
 
+#ifdef USE_LEGACY_AUDIO_POLICY
 namespace {
     extern struct audio_policy_service_ops aps_ops;
 };
+#endif
 
 // ----------------------------------------------------------------------------
 
@@ -66,11 +68,6 @@
 
 void AudioPolicyService::onFirstRef()
 {
-    char value[PROPERTY_VALUE_MAX];
-    const struct hw_module_t *module;
-    int forced_val;
-    int rc;
-
     {
         Mutex::Autolock _l(mLock);
 
@@ -85,7 +82,8 @@
         ALOGI("AudioPolicyService CSTOR in legacy mode");
 
         /* instantiate the audio policy manager */
-        rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module);
+        const struct hw_module_t *module;
+        int rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module);
         if (rc) {
             return;
         }
@@ -989,6 +987,18 @@
             delayMs = 1;
         } break;
 
+        case SET_VOICE_VOLUME: {
+            VoiceVolumeData *data = (VoiceVolumeData *)command->mParam.get();
+            VoiceVolumeData *data2 = (VoiceVolumeData *)command2->mParam.get();
+            ALOGV("Filtering out voice volume command value %f replaced by %f",
+                  data2->mVolume, data->mVolume);
+            removedCommands.add(command2);
+            command->mTime = command2->mTime;
+            // force delayMs to non 0 so that code below does not request to wait for
+            // command status as the command is now delayed
+            delayMs = 1;
+        } break;
+
         case CREATE_AUDIO_PATCH:
         case RELEASE_AUDIO_PATCH: {
             audio_patch_handle_t handle;
@@ -1198,6 +1208,7 @@
 int aps_set_voice_volume(void *service, float volume, int delay_ms);
 };
 
+#ifdef USE_LEGACY_AUDIO_POLICY
 namespace {
     struct audio_policy_service_ops aps_ops = {
         .open_output           = aps_open_output,
@@ -1220,5 +1231,6 @@
         .open_input_on_module  = aps_open_input_on_module,
     };
 }; // namespace <unnamed>
+#endif
 
 }; // namespace android
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index def6405..8c9b23c 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -66,6 +66,9 @@
     virtual audio_policy_dev_state_t getDeviceConnectionState(
                                                                 audio_devices_t device,
                                                                 const char *device_address);
+    virtual status_t handleDeviceConfigChange(audio_devices_t device,
+                                              const char *device_address,
+                                              const char *device_name);
     virtual status_t setPhoneState(audio_mode_t state);
     virtual status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
     virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage);
diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index 6b5421d..7feed6b 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -51,7 +51,8 @@
     device3/Camera3BufferManager.cpp \
     gui/RingBufferConsumer.cpp \
     utils/CameraTraces.cpp \
-    utils/AutoConditionLock.cpp
+    utils/AutoConditionLock.cpp \
+    utils/TagMonitor.cpp
 
 LOCAL_SHARED_LIBRARIES:= \
     libui \
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index 5062a08..85faac6 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -470,8 +470,8 @@
         // CameraInfo is for android.hardware.Camera which does not
         // support external camera facing. The closest approximation would be
         // front camera.
-        if (cameraInfo->orientation == CAMERA_FACING_EXTERNAL) {
-            cameraInfo->orientation = CAMERA_FACING_FRONT;
+        if (cameraInfo->facing == CAMERA_FACING_EXTERNAL) {
+            cameraInfo->facing = CAMERA_FACING_FRONT;
         }
     }
     return rc;
@@ -914,8 +914,9 @@
 // Can camera service trust the caller based on the calling UID?
 static bool isTrustedCallingUid(uid_t uid) {
     switch (uid) {
-        case AID_MEDIA:         // mediaserver
+        case AID_MEDIA:        // mediaserver
         case AID_CAMERASERVER: // cameraserver
+        case AID_RADIO:        // telephony
             return true;
         default:
             return false;
@@ -2142,6 +2143,8 @@
     }
 
     finishCameraOps();
+    // Notify flashlight that a camera device is closed.
+    mCameraService->mFlashlight->deviceClosed(String8::format("%d", mCameraId));
     ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid);
 
     // client shouldn't be able to call into us anymore
@@ -2239,10 +2242,6 @@
         // Transition device state to CLOSED
         mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED,
                 String8::format("%d", mCameraId));
-
-        // Notify flashlight that a camera device is closed.
-        mCameraService->mFlashlight->deviceClosed(
-                String8::format("%d", mCameraId));
     }
     // Always stop watching, even if no camera op is active
     if (mOpsCallback != NULL) {
@@ -2557,7 +2556,8 @@
                 write(fd, result.string(), result.size());
             } else {
                 result.appendFormat("  Facing: %s\n",
-                        info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT");
+                        info.facing == CAMERA_FACING_BACK ? "BACK" :
+                                info.facing == CAMERA_FACING_FRONT ? "FRONT" : "EXTERNAL");
                 result.appendFormat("  Orientation: %d\n", info.orientation);
                 int deviceVersion;
                 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) {
diff --git a/services/camera/libcameraservice/api1/Camera2Client.cpp b/services/camera/libcameraservice/api1/Camera2Client.cpp
index 7b5b11a..bcd62d6 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.cpp
+++ b/services/camera/libcameraservice/api1/Camera2Client.cpp
@@ -322,6 +322,9 @@
             p.fastInfo.bestStillCaptureFpsRange[0],
             p.fastInfo.bestStillCaptureFpsRange[1]);
 
+    result.appendFormat("    Use zero shutter lag: %s\n",
+            p.useZeroShutterLag() ? "yes" : "no");
+
     result.append("  Current streams:\n");
     result.appendFormat("    Preview stream ID: %d\n",
             getPreviewStreamId());
@@ -813,7 +816,7 @@
         }
     }
 
-    if (params.zslMode && !params.recordingHint &&
+    if (params.useZeroShutterLag() &&
             getRecordingStreamId() == NO_STREAM) {
         res = updateProcessorStream(mZslProcessor, params);
         if (res != OK) {
@@ -1362,7 +1365,7 @@
 
             return OK;
         }
-        if (l.mParameters.zslMode) {
+        if (l.mParameters.allowZslMode) {
             mZslProcessor->clearZslQueue();
         }
     }
@@ -1460,7 +1463,7 @@
 
         // Clear ZSL buffer queue when Jpeg size is changed.
         bool jpegStreamChanged = mJpegProcessor->getStreamId() != lastJpegStreamId;
-        if (l.mParameters.zslMode && jpegStreamChanged) {
+        if (l.mParameters.allowZslMode && jpegStreamChanged) {
             ALOGV("%s: Camera %d: Clear ZSL buffer queue when Jpeg size is changed",
                     __FUNCTION__, mCameraId);
             mZslProcessor->clearZslQueue();
@@ -1495,7 +1498,7 @@
     if (res != OK) return res;
     Parameters::focusMode_t focusModeAfter = l.mParameters.focusMode;
 
-    if (l.mParameters.zslMode && focusModeAfter != focusModeBefore) {
+    if (l.mParameters.allowZslMode && focusModeAfter != focusModeBefore) {
         mZslProcessor->clearZslQueue();
     }
 
diff --git a/services/camera/libcameraservice/api1/client2/CaptureSequencer.cpp b/services/camera/libcameraservice/api1/client2/CaptureSequencer.cpp
index 9dd1721..b65f1c7 100644
--- a/services/camera/libcameraservice/api1/client2/CaptureSequencer.cpp
+++ b/services/camera/libcameraservice/api1/client2/CaptureSequencer.cpp
@@ -338,7 +338,7 @@
         return DONE;
     }
 
-    else if (l.mParameters.zslMode &&
+    else if (l.mParameters.useZeroShutterLag() &&
             l.mParameters.state == Parameters::STILL_CAPTURE &&
             l.mParameters.flashMode != Parameters::FLASH_MODE_ON) {
         nextState = ZSL_START;
diff --git a/services/camera/libcameraservice/api1/client2/JpegProcessor.cpp b/services/camera/libcameraservice/api1/client2/JpegProcessor.cpp
index ffe96fc..d6d8dde 100644
--- a/services/camera/libcameraservice/api1/client2/JpegProcessor.cpp
+++ b/services/camera/libcameraservice/api1/client2/JpegProcessor.cpp
@@ -67,10 +67,15 @@
 }
 
 void JpegProcessor::onBufferReleased(const BufferInfo& bufferInfo) {
-    Mutex::Autolock l(mInputMutex);
     ALOGV("%s", __FUNCTION__);
-
     if (bufferInfo.mError) {
+        // Only lock in case of error, since we get one of these for each
+        // onFrameAvailable as well, and scheduling may delay this call late
+        // enough to run into later preview restart operations, for non-error
+        // cases.
+        // b/29524651
+        ALOGV("%s: JPEG buffer lost", __FUNCTION__);
+        Mutex::Autolock l(mInputMutex);
         mCaptureDone = true;
         mCaptureSuccess = false;
         mCaptureDoneSignal.signal();
diff --git a/services/camera/libcameraservice/api1/client2/Parameters.cpp b/services/camera/libcameraservice/api1/client2/Parameters.cpp
index 5779176..9d5f33c 100644
--- a/services/camera/libcameraservice/api1/client2/Parameters.cpp
+++ b/services/camera/libcameraservice/api1/client2/Parameters.cpp
@@ -908,12 +908,12 @@
     property_get("camera.disable_zsl_mode", value, "0");
     if (!strcmp(value,"1") || slowJpegMode) {
         ALOGI("Camera %d: Disabling ZSL mode", cameraId);
-        zslMode = false;
+        allowZslMode = false;
     } else {
-        zslMode = true;
+        allowZslMode = true;
     }
 
-    ALOGI("%s: zslMode: %d slowJpegMode %d", __FUNCTION__, zslMode, slowJpegMode);
+    ALOGI("%s: allowZslMode: %d slowJpegMode %d", __FUNCTION__, allowZslMode, slowJpegMode);
 
     state = STOPPED;
 
@@ -1127,6 +1127,8 @@
     ALOGV("Camera %d: Flexible YUV %s supported",
             cameraId, fastInfo.useFlexibleYuv ? "is" : "is not");
 
+    fastInfo.maxJpegSize = getMaxSize(getAvailableJpegSizes());
+
     return OK;
 }
 
@@ -2231,6 +2233,25 @@
     return pictureSizeOverriden;
 }
 
+bool Parameters::useZeroShutterLag() const {
+    // If ZSL mode is disabled, don't use it
+    if (!allowZslMode) return false;
+    // If recording hint is enabled, don't do ZSL
+    if (recordingHint) return false;
+    // If still capture size is no bigger than preview or video size,
+    // don't do ZSL
+    if (pictureWidth <= previewWidth || pictureHeight <= previewHeight ||
+            pictureWidth <= videoWidth || pictureHeight <= videoHeight) {
+        return false;
+    }
+    // If still capture size is less than quarter of max, don't do ZSL
+    if ((pictureWidth * pictureHeight) <
+            (fastInfo.maxJpegSize.width * fastInfo.maxJpegSize.height / 4) ) {
+        return false;
+    }
+    return true;
+}
+
 const char* Parameters::getStateName(State state) {
 #define CASE_ENUM_TO_CHAR(x) case x: return(#x); break;
     switch(state) {
diff --git a/services/camera/libcameraservice/api1/client2/Parameters.h b/services/camera/libcameraservice/api1/client2/Parameters.h
index a6e816c..798aab5 100644
--- a/services/camera/libcameraservice/api1/client2/Parameters.h
+++ b/services/camera/libcameraservice/api1/client2/Parameters.h
@@ -161,9 +161,9 @@
     bool previewCallbackOneShot;
     bool previewCallbackSurface;
 
-    bool zslMode;
+    bool allowZslMode;
     // Whether the jpeg stream is slower than 30FPS and can slow down preview.
-    // When slowJpegMode is true, zslMode must be false to avoid slowing down preview.
+    // When slowJpegMode is true, allowZslMode must be false to avoid slowing down preview.
     bool slowJpegMode;
 
     // Overall camera state
@@ -219,6 +219,7 @@
         DefaultKeyedVector<uint8_t, OverrideModes> sceneModeOverrides;
         float minFocalLength;
         bool useFlexibleYuv;
+        Size maxJpegSize;
     } fastInfo;
 
     // Quirks information; these are short-lived flags to enable workarounds for
@@ -271,6 +272,8 @@
     status_t recoverOverriddenJpegSize();
     // if video snapshot size is currently overridden
     bool isJpegSizeOverridden();
+    // whether zero shutter lag should be used for non-recording operation
+    bool useZeroShutterLag() const;
 
     // Calculate the crop region rectangle, either tightly about the preview
     // resolution, or a region just based on the active array; both take
diff --git a/services/camera/libcameraservice/api1/client2/StreamingProcessor.cpp b/services/camera/libcameraservice/api1/client2/StreamingProcessor.cpp
index 4c2d0bd..bf92a2b 100644
--- a/services/camera/libcameraservice/api1/client2/StreamingProcessor.cpp
+++ b/services/camera/libcameraservice/api1/client2/StreamingProcessor.cpp
@@ -115,7 +115,7 @@
 
         // Use CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG for ZSL streaming case.
         if (client->getCameraDeviceVersion() >= CAMERA_DEVICE_API_VERSION_3_0) {
-            if (params.zslMode && !params.recordingHint) {
+            if (params.useZeroShutterLag() && !params.recordingHint) {
                 res = device->createDefaultRequest(CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG,
                         &mPreviewRequest);
             } else {
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
index 2ebd5a8..b4f8e21 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
@@ -338,13 +338,15 @@
 
     status_t err = mDevice->configureStreams(isConstrainedHighSpeed);
     if (err == BAD_VALUE) {
-        res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                "Camera %d: Unsupported set of inputs/outputs provided",
+        String8 msg = String8::format("Camera %d: Unsupported set of inputs/outputs provided",
                 mCameraId);
+        ALOGE("%s: %s", __FUNCTION__, msg.string());
+        res = STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     } else if (err != OK) {
-        res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error configuring streams: %s (%d)",
+        String8 msg = String8::format("Camera %d: Error configuring streams: %s (%d)",
                 mCameraId, strerror(-err), err);
+        ALOGE("%s: %s", __FUNCTION__, msg.string());
+        res = STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
 
     return res;
@@ -365,6 +367,7 @@
 
     bool isInput = false;
     ssize_t index = NAME_NOT_FOUND;
+    ssize_t dIndex = NAME_NOT_FOUND;
 
     if (mInputStream.configured && mInputStream.id == streamId) {
         isInput = true;
@@ -378,10 +381,19 @@
         }
 
         if (index == NAME_NOT_FOUND) {
-            String8 msg = String8::format("Camera %d: Invalid stream ID (%d) specified, no such "
-                    "stream created yet", mCameraId, streamId);
-            ALOGW("%s: %s", __FUNCTION__, msg.string());
-            return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
+            // See if this stream is one of the deferred streams.
+            for (size_t i = 0; i < mDeferredStreams.size(); ++i) {
+                if (streamId == mDeferredStreams[i]) {
+                    dIndex = i;
+                    break;
+                }
+            }
+            if (dIndex == NAME_NOT_FOUND) {
+                String8 msg = String8::format("Camera %d: Invalid stream ID (%d) specified, no such"
+                        " stream created yet", mCameraId, streamId);
+                ALOGW("%s: %s", __FUNCTION__, msg.string());
+                return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
+            }
         }
     }
 
@@ -396,8 +408,10 @@
     } else {
         if (isInput) {
             mInputStream.configured = false;
-        } else {
+        } else if (index != NAME_NOT_FOUND) {
             mStreamMap.removeItemsAt(index);
+        } else {
+            mDeferredStreams.removeItemsAt(dIndex);
         }
     }
 
@@ -416,14 +430,30 @@
     Mutex::Autolock icl(mBinderSerializationLock);
 
     sp<IGraphicBufferProducer> bufferProducer = outputConfiguration.getGraphicBufferProducer();
-    if (bufferProducer == NULL) {
-        ALOGE("%s: bufferProducer must not be null", __FUNCTION__);
+    bool deferredConsumer = bufferProducer == NULL;
+    int surfaceType = outputConfiguration.getSurfaceType();
+    bool validSurfaceType = ((surfaceType == OutputConfiguration::SURFACE_TYPE_SURFACE_VIEW) ||
+            (surfaceType == OutputConfiguration::SURFACE_TYPE_SURFACE_TEXTURE));
+    if (deferredConsumer && !validSurfaceType) {
+        ALOGE("%s: Target surface is invalid: bufferProducer = %p, surfaceType = %d.",
+                __FUNCTION__, bufferProducer.get(), surfaceType);
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, "Target Surface is invalid");
     }
+
     if (!mDevice.get()) {
         return STATUS_ERROR(CameraService::ERROR_DISCONNECTED, "Camera device no longer alive");
     }
 
+    int width, height, format;
+    int32_t consumerUsage;
+    android_dataspace dataSpace;
+    status_t err;
+
+    // Create stream for deferred surface case.
+    if (deferredConsumer) {
+        return createDeferredSurfaceStreamLocked(outputConfiguration, newStreamId);
+    }
+
     // Don't create multiple streams for the same target surface
     {
         ssize_t index = mStreamMap.indexOfKey(IInterface::asBinder(bufferProducer));
@@ -435,13 +465,10 @@
         }
     }
 
-    status_t err;
-
     // HACK b/10949105
     // Query consumer usage bits to set async operation mode for
     // GLConsumer using controlledByApp parameter.
     bool useAsync = false;
-    int32_t consumerUsage;
     if ((err = bufferProducer->query(NATIVE_WINDOW_CONSUMER_USAGE_BITS,
             &consumerUsage)) != OK) {
         String8 msg = String8::format("Camera %d: Failed to query Surface consumer usage: %s (%d)",
@@ -450,8 +477,8 @@
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
     if (consumerUsage & GraphicBuffer::USAGE_HW_TEXTURE) {
-        ALOGW("%s: Camera %d: Forcing asynchronous mode for stream",
-                __FUNCTION__, mCameraId);
+        ALOGW("%s: Camera %d with consumer usage flag: 0x%x: Forcing asynchronous mode for stream",
+                __FUNCTION__, mCameraId, consumerUsage);
         useAsync = true;
     }
 
@@ -467,9 +494,6 @@
     sp<Surface> surface = new Surface(bufferProducer, useAsync);
     ANativeWindow *anw = surface.get();
 
-    int width, height, format;
-    android_dataspace dataSpace;
-
     if ((err = anw->query(anw, NATIVE_WINDOW_WIDTH, &width)) != OK) {
         String8 msg = String8::format("Camera %d: Failed to query Surface width: %s (%d)",
                 mCameraId, strerror(-err), err);
@@ -527,29 +551,12 @@
     } else {
         mStreamMap.add(binder, streamId);
 
-        ALOGV("%s: Camera %d: Successfully created a new stream ID %d",
-              __FUNCTION__, mCameraId, streamId);
+        ALOGV("%s: Camera %d: Successfully created a new stream ID %d for output surface"
+                " (%d x %d) with format 0x%x.",
+              __FUNCTION__, mCameraId, streamId, width, height, format);
 
-        /**
-         * Set the stream transform flags to automatically
-         * rotate the camera stream for preview use cases.
-         */
-        int32_t transform = 0;
-        err = getRotationTransformLocked(&transform);
-
-        if (err != OK) {
-            // Error logged by getRotationTransformLocked.
-            return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION,
-                    "Unable to calculate rotation transform for new stream");
-        }
-
-        err = mDevice->setStreamTransform(streamId, transform);
-        if (err != OK) {
-            String8 msg = String8::format("Failed to set stream transform (stream id %d)",
-                    streamId);
-            ALOGE("%s: %s", __FUNCTION__, msg.string());
-            return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
-        }
+        // Set transform flags to ensure preview to be rotated correctly.
+        res = setStreamTransformLocked(streamId);
 
         *newStreamId = streamId;
     }
@@ -557,6 +564,84 @@
     return res;
 }
 
+binder::Status CameraDeviceClient::createDeferredSurfaceStreamLocked(
+        const hardware::camera2::params::OutputConfiguration &outputConfiguration,
+        /*out*/
+        int* newStreamId) {
+    int width, height, format, surfaceType;
+    int32_t consumerUsage;
+    android_dataspace dataSpace;
+    status_t err;
+    binder::Status res;
+
+    if (!mDevice.get()) {
+        return STATUS_ERROR(CameraService::ERROR_DISCONNECTED, "Camera device no longer alive");
+    }
+
+    // Infer the surface info for deferred surface stream creation.
+    width = outputConfiguration.getWidth();
+    height = outputConfiguration.getHeight();
+    surfaceType = outputConfiguration.getSurfaceType();
+    format = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
+    dataSpace = android_dataspace_t::HAL_DATASPACE_UNKNOWN;
+    // Hardcode consumer usage flags: SurfaceView--0x900, SurfaceTexture--0x100.
+    consumerUsage = GraphicBuffer::USAGE_HW_TEXTURE;
+    if (surfaceType == OutputConfiguration::SURFACE_TYPE_SURFACE_VIEW) {
+        consumerUsage |= GraphicBuffer::USAGE_HW_COMPOSER;
+    }
+    int streamId = camera3::CAMERA3_STREAM_ID_INVALID;
+    err = mDevice->createStream(/*surface*/nullptr, width, height, format, dataSpace,
+            static_cast<camera3_stream_rotation_t>(outputConfiguration.getRotation()),
+            &streamId, outputConfiguration.getSurfaceSetID(), consumerUsage);
+
+    if (err != OK) {
+        res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
+                "Camera %d: Error creating output stream (%d x %d, fmt %x, dataSpace %x): %s (%d)",
+                mCameraId, width, height, format, dataSpace, strerror(-err), err);
+    } else {
+        // Can not add streamId to mStreamMap here, as the surface is deferred. Add it to
+        // a separate list to track. Once the deferred surface is set, this id will be
+        // relocated to mStreamMap.
+        mDeferredStreams.push_back(streamId);
+
+        ALOGV("%s: Camera %d: Successfully created a new stream ID %d for a deferred surface"
+                " (%d x %d) stream with format 0x%x.",
+              __FUNCTION__, mCameraId, streamId, width, height, format);
+
+        // Set transform flags to ensure preview to be rotated correctly.
+        res = setStreamTransformLocked(streamId);
+
+        *newStreamId = streamId;
+    }
+    return res;
+}
+
+binder::Status CameraDeviceClient::setStreamTransformLocked(int streamId) {
+    int32_t transform = 0;
+    status_t err;
+    binder::Status res;
+
+    if (!mDevice.get()) {
+        return STATUS_ERROR(CameraService::ERROR_DISCONNECTED, "Camera device no longer alive");
+    }
+
+    err = getRotationTransformLocked(&transform);
+    if (err != OK) {
+        // Error logged by getRotationTransformLocked.
+        return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION,
+                "Unable to calculate rotation transform for new stream");
+    }
+
+    err = mDevice->setStreamTransform(streamId, transform);
+    if (err != OK) {
+        String8 msg = String8::format("Failed to set stream transform (stream id %d)",
+                streamId);
+        ALOGE("%s: %s", __FUNCTION__, msg.string());
+        return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
+    }
+
+    return res;
+}
 
 binder::Status CameraDeviceClient::createInputStream(
         int width, int height, int format,
@@ -966,6 +1051,76 @@
     return res;
 }
 
+binder::Status CameraDeviceClient::setDeferredConfiguration(int32_t streamId,
+        const hardware::camera2::params::OutputConfiguration &outputConfiguration) {
+    ATRACE_CALL();
+
+    binder::Status res;
+    if (!(res = checkPidStatus(__FUNCTION__)).isOk()) return res;
+
+    Mutex::Autolock icl(mBinderSerializationLock);
+
+    sp<IGraphicBufferProducer> bufferProducer = outputConfiguration.getGraphicBufferProducer();
+
+    // Client code should guarantee that the surface is from SurfaceView or SurfaceTexture.
+    if (bufferProducer == NULL) {
+        ALOGE("%s: bufferProducer must not be null", __FUNCTION__);
+        return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, "Target Surface is invalid");
+    }
+    // Check if this stram id is one of the deferred streams
+    ssize_t index = NAME_NOT_FOUND;
+    for (size_t i = 0; i < mDeferredStreams.size(); i++) {
+        if (streamId == mDeferredStreams[i]) {
+            index = i;
+            break;
+        }
+    }
+    if (index == NAME_NOT_FOUND) {
+        String8 msg = String8::format("Camera %d: deferred surface is set to a unknown stream"
+                "(ID %d)", mCameraId, streamId);
+        ALOGW("%s: %s", __FUNCTION__, msg.string());
+        return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
+    }
+
+    if (!mDevice.get()) {
+        return STATUS_ERROR(CameraService::ERROR_DISCONNECTED, "Camera device no longer alive");
+    }
+
+    // Don't create multiple streams for the same target surface
+    {
+        ssize_t index = mStreamMap.indexOfKey(IInterface::asBinder(bufferProducer));
+        if (index != NAME_NOT_FOUND) {
+            String8 msg = String8::format("Camera %d: Surface already has a stream created "
+                    " for it (ID %zd)", mCameraId, index);
+            ALOGW("%s: %s", __FUNCTION__, msg.string());
+            return STATUS_ERROR(CameraService::ERROR_ALREADY_EXISTS, msg.string());
+        }
+    }
+
+    status_t err;
+
+    // Always set to async, as we know the deferred surface is for preview streaming.
+    sp<Surface> consumerSurface = new Surface(bufferProducer, /*useAsync*/true);
+
+    // Finish the deferred stream configuration with the surface.
+    err = mDevice->setConsumerSurface(streamId, consumerSurface);
+    if (err == OK) {
+        sp<IBinder> binder = IInterface::asBinder(bufferProducer);
+        mStreamMap.add(binder, streamId);
+        mDeferredStreams.removeItemsAt(index);
+    } else if (err == NO_INIT) {
+        res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
+                "Camera %d: Deferred surface is invalid: %s (%d)",
+                mCameraId, strerror(-err), err);
+    } else {
+        res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
+                "Camera %d: Error setting output stream deferred surface: %s (%d)",
+                mCameraId, strerror(-err), err);
+    }
+
+    return res;
+}
+
 status_t CameraDeviceClient::dump(int fd, const Vector<String16>& args) {
     return BasicClient::dump(fd, args);
 }
@@ -991,6 +1146,11 @@
         for (size_t i = 0; i < mStreamMap.size(); i++) {
             result.appendFormat("      Stream %d\n", mStreamMap.valueAt(i));
         }
+    } else if (!mDeferredStreams.isEmpty()) {
+        result.append("    Current deferred surface output stream IDs:\n");
+        for (auto& streamId : mDeferredStreams) {
+            result.appendFormat("      Stream %d\n", streamId);
+        }
     } else {
         result.append("    No output streams configured.\n");
     }
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.h b/services/camera/libcameraservice/api2/CameraDeviceClient.h
index 5a9a2d6..de283ea 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.h
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.h
@@ -131,6 +131,10 @@
     // Prepare stream by preallocating up to maxCount of its buffers
     virtual binder::Status prepare2(int32_t maxCount, int32_t streamId);
 
+    // Set the deferred surface for a stream.
+    virtual binder::Status setDeferredConfiguration(int32_t streamId,
+            const hardware::camera2::params::OutputConfiguration &outputConfiguration);
+
     /**
      * Interface used by CameraService
      */
@@ -188,6 +192,15 @@
     // Find the square of the euclidean distance between two points
     static int64_t euclidDistSquare(int32_t x0, int32_t y0, int32_t x1, int32_t y1);
 
+    // Create an output stream with surface deferred for future.
+    binder::Status createDeferredSurfaceStreamLocked(
+            const hardware::camera2::params::OutputConfiguration &outputConfiguration,
+            int* newStreamId = NULL);
+
+    // Set the stream transform flags to automatically rotate the camera stream for preview use
+    // cases.
+    binder::Status setStreamTransformLocked(int streamId);
+
     // Find the closest dimensions for a given format in available stream configurations with
     // a width <= ROUNDING_WIDTH_CAP
     static const int32_t ROUNDING_WIDTH_CAP = 1920;
@@ -216,6 +229,10 @@
 
     int32_t mRequestIdCounter;
 
+    // The list of output streams whose surfaces are deferred. We have to track them separately
+    // as there are no surfaces available and can not be put into mStreamMap. Once the deferred
+    // Surface is configured, the stream id will be moved to mStreamMap.
+    Vector<int32_t> mDeferredStreams;
 };
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.cpp b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
index c0d6da6..ccd1e4d 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.cpp
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
@@ -104,7 +104,8 @@
         return res;
     }
 
-    res = mDevice->setNotifyCallback(this);
+    wp<CameraDeviceBase::NotificationListener> weakThis(this);
+    res = mDevice->setNotifyCallback(weakThis);
 
     return OK;
 }
diff --git a/services/camera/libcameraservice/common/CameraDeviceBase.h b/services/camera/libcameraservice/common/CameraDeviceBase.h
index 35ec531..984d84b 100644
--- a/services/camera/libcameraservice/common/CameraDeviceBase.h
+++ b/services/camera/libcameraservice/common/CameraDeviceBase.h
@@ -110,7 +110,8 @@
     virtual status_t createStream(sp<Surface> consumer,
             uint32_t width, uint32_t height, int format,
             android_dataspace dataSpace, camera3_stream_rotation_t rotation, int *id,
-            int streamSetId = camera3::CAMERA3_STREAM_SET_ID_INVALID) = 0;
+            int streamSetId = camera3::CAMERA3_STREAM_SET_ID_INVALID,
+            uint32_t consumerUsage = 0) = 0;
 
     /**
      * Create an input stream of width, height, and format.
@@ -189,7 +190,7 @@
     /**
      * Abstract class for HAL notification listeners
      */
-    class NotificationListener {
+    class NotificationListener : public virtual RefBase {
       public:
         // The set of notifications is a merge of the notifications required for
         // API1 and API2.
@@ -218,7 +219,7 @@
      * Connect HAL notifications to a listener. Overwrites previous
      * listener. Set to NULL to stop receiving notifications.
      */
-    virtual status_t setNotifyCallback(NotificationListener *listener) = 0;
+    virtual status_t setNotifyCallback(wp<NotificationListener> listener) = 0;
 
     /**
      * Whether the device supports calling notifyAutofocus, notifyAutoExposure,
@@ -312,6 +313,12 @@
      * Get the HAL device version.
      */
     virtual uint32_t getDeviceVersion() = 0;
+
+    /**
+     * Set the deferred consumer surface and finish the rest of the stream configuration.
+     */
+    virtual status_t setConsumerSurface(int streamId, sp<Surface> consumer) = 0;
+
 };
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 13292aa..94bc303 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -42,6 +42,7 @@
 #include <utils/Log.h>
 #include <utils/Trace.h>
 #include <utils/Timers.h>
+#include <cutils/properties.h>
 
 #include <android/hardware/camera2/ICameraDeviceUser.h>
 
@@ -169,6 +170,9 @@
         return res;
     }
 
+    /** Register in-flight map to the status tracker */
+    mInFlightStatusId = mStatusTracker->addComponent();
+
     /** Create buffer manager */
     mBufferManager = new Camera3BufferManager();
 
@@ -256,7 +260,7 @@
     ATRACE_CALL();
     Mutex::Autolock il(mInterfaceLock);
 
-    ALOGV("%s: E", __FUNCTION__);
+    ALOGI("%s: E", __FUNCTION__);
 
     status_t res = OK;
 
@@ -333,7 +337,7 @@
         internalUpdateStatusLocked(STATUS_UNINITIALIZED);
     }
 
-    ALOGV("%s: X", __FUNCTION__);
+    ALOGI("%s: X", __FUNCTION__);
     return res;
 }
 
@@ -530,12 +534,26 @@
             mId, __FUNCTION__);
 
     bool dumpTemplates = false;
+
     String16 templatesOption("-t");
+    String16 monitorOption("-m");
     int n = args.size();
     for (int i = 0; i < n; i++) {
         if (args[i] == templatesOption) {
             dumpTemplates = true;
         }
+        if (args[i] == monitorOption) {
+            if (i + 1 < n) {
+                String8 monitorTags = String8(args[i + 1]);
+                if (monitorTags == "off") {
+                    mTagMonitor.disableMonitoring();
+                } else {
+                    mTagMonitor.parseTagsToMonitor(monitorTags);
+                }
+            } else {
+                mTagMonitor.disableMonitoring();
+            }
+        }
     }
 
     String8 lines;
@@ -622,6 +640,8 @@
         }
     }
 
+    mTagMonitor.dumpMonitoredMetadata(fd);
+
     if (mHal3Device != NULL) {
         lines = String8("    HAL device dump:\n");
         write(fd, lines.string(), lines.size());
@@ -990,12 +1010,13 @@
 
 status_t Camera3Device::createStream(sp<Surface> consumer,
         uint32_t width, uint32_t height, int format, android_dataspace dataSpace,
-        camera3_stream_rotation_t rotation, int *id, int streamSetId) {
+        camera3_stream_rotation_t rotation, int *id, int streamSetId, uint32_t consumerUsage) {
     ATRACE_CALL();
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
-    ALOGV("Camera %d: Creating new stream %d: %d x %d, format %d, dataspace %d rotation %d",
-            mId, mNextStreamId, width, height, format, dataSpace, rotation);
+    ALOGV("Camera %d: Creating new stream %d: %d x %d, format %d, dataspace %d rotation %d"
+            " consumer usage 0x%x", mId, mNextStreamId, width, height, format, dataSpace, rotation,
+            consumerUsage);
 
     status_t res;
     bool wasActive = false;
@@ -1032,6 +1053,19 @@
     if (mDeviceVersion <= CAMERA_DEVICE_API_VERSION_3_2) {
         streamSetId = CAMERA3_STREAM_SET_ID_INVALID;
     }
+
+    // HAL3.1 doesn't support deferred consumer stream creation as it requires buffer registration
+    // which requires a consumer surface to be available.
+    if (consumer == nullptr && mDeviceVersion < CAMERA_DEVICE_API_VERSION_3_2) {
+        ALOGE("HAL3.1 doesn't support deferred consumer stream creation");
+        return BAD_VALUE;
+    }
+
+    if (consumer == nullptr && format != HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
+        ALOGE("Deferred consumer stream creation only support IMPLEMENTATION_DEFINED format");
+        return BAD_VALUE;
+    }
+
     // Use legacy dataspace values for older HALs
     if (mDeviceVersion <= CAMERA_DEVICE_API_VERSION_3_3) {
         dataSpace = mapToLegacyDataspace(dataSpace);
@@ -1063,6 +1097,10 @@
         newStream = new Camera3OutputStream(mNextStreamId, consumer,
                 width, height, rawOpaqueBufferSize, format, dataSpace, rotation,
                 mTimestampOffset, streamSetId);
+    } else if (consumer == nullptr) {
+        newStream = new Camera3OutputStream(mNextStreamId,
+                width, height, format, consumerUsage, dataSpace, rotation,
+                mTimestampOffset, streamSetId);
     } else {
         newStream = new Camera3OutputStream(mNextStreamId, consumer,
                 width, height, format, dataSpace, rotation,
@@ -1445,7 +1483,7 @@
 }
 
 
-status_t Camera3Device::setNotifyCallback(NotificationListener *listener) {
+status_t Camera3Device::setNotifyCallback(wp<NotificationListener> listener) {
     ATRACE_CALL();
     Mutex::Autolock l(mOutputLock);
 
@@ -1578,15 +1616,9 @@
     ALOGV("%s: Camera %d: Flushing all requests", __FUNCTION__, mId);
     Mutex::Autolock il(mInterfaceLock);
 
-    NotificationListener* listener;
-    {
-        Mutex::Autolock l(mOutputLock);
-        listener = mListener;
-    }
-
     {
         Mutex::Autolock l(mLock);
-        mRequestThread->clear(listener, /*out*/frameNumber);
+        mRequestThread->clear(/*out*/frameNumber);
     }
 
     status_t res;
@@ -1712,16 +1744,55 @@
         // state changes
         if (mPauseStateNotify) return;
     }
-    NotificationListener *listener;
+
+    sp<NotificationListener> listener;
     {
         Mutex::Autolock l(mOutputLock);
-        listener = mListener;
+        listener = mListener.promote();
     }
     if (idle && listener != NULL) {
         listener->notifyIdle();
     }
 }
 
+status_t Camera3Device::setConsumerSurface(int streamId, sp<Surface> consumer) {
+    ATRACE_CALL();
+    ALOGV("%s: Camera %d: set consumer surface for stream %d", __FUNCTION__, mId, streamId);
+    Mutex::Autolock il(mInterfaceLock);
+    Mutex::Autolock l(mLock);
+
+    if (consumer == nullptr) {
+        CLOGE("Null consumer is passed!");
+        return BAD_VALUE;
+    }
+
+    ssize_t idx = mOutputStreams.indexOfKey(streamId);
+    if (idx == NAME_NOT_FOUND) {
+        CLOGE("Stream %d is unknown", streamId);
+        return idx;
+    }
+    sp<Camera3OutputStreamInterface> stream = mOutputStreams[idx];
+    status_t res = stream->setConsumer(consumer);
+    if (res != OK) {
+        CLOGE("Stream %d set consumer failed (error %d %s) ", streamId, res, strerror(-res));
+        return res;
+    }
+
+    if (!stream->isConfiguring()) {
+        CLOGE("Stream %d was already fully configured.", streamId);
+        return INVALID_OPERATION;
+    }
+
+    res = stream->finishConfiguration(mHal3Device);
+    if (res != OK) {
+        SET_ERR_L("Can't finish configuring output stream %d: %s (%d)",
+                stream->getId(), strerror(-res), res);
+        return res;
+    }
+
+    return OK;
+}
+
 /**
  * Camera3Device private methods
  */
@@ -1781,6 +1852,13 @@
         sp<Camera3OutputStreamInterface> stream =
                 mOutputStreams.editValueAt(idx);
 
+        // It is illegal to include a deferred consumer output stream into a request
+        if (stream->isConsumerConfigurationDeferred()) {
+            CLOGE("Stream %d hasn't finished configuration yet due to deferred consumer",
+                    stream->getId());
+            return NULL;
+        }
+
         // Lazy completion of stream configuration (allocation/registration)
         // on first use
         if (stream->isConfiguring()) {
@@ -1948,7 +2026,7 @@
     for (size_t i = 0; i < mOutputStreams.size(); i++) {
         sp<Camera3OutputStreamInterface> outputStream =
             mOutputStreams.editValueAt(i);
-        if (outputStream->isConfiguring()) {
+        if (outputStream->isConfiguring() && !outputStream->isConsumerConfigurationDeferred()) {
             res = outputStream->finishConfiguration(mHal3Device);
             if (res != OK) {
                 CLOGE("Can't finish configuring output stream %d: %s (%d)",
@@ -1963,19 +2041,20 @@
     // across configure_streams() calls
     mRequestThread->configurationComplete(mIsConstrainedHighSpeedConfiguration);
 
-    // Boost priority of request thread for high speed recording to SCHED_FIFO
-    if (mIsConstrainedHighSpeedConfiguration) {
+    char value[PROPERTY_VALUE_MAX];
+    property_get("camera.fifo.disable", value, "0");
+    int32_t disableFifo = atoi(value);
+    if (disableFifo != 1) {
+        // Boost priority of request thread to SCHED_FIFO.
         pid_t requestThreadTid = mRequestThread->getTid();
         res = requestPriority(getpid(), requestThreadTid,
-                kConstrainedHighSpeedThreadPriority, /*asynchronous*/ false);
+                kRequestThreadPriority, /*asynchronous*/ false);
         if (res != OK) {
             ALOGW("Can't set realtime priority for request processing thread: %s (%d)",
                     strerror(-res), res);
         } else {
             ALOGD("Set real time priority for request queue thread (tid %d)", requestThreadTid);
         }
-    } else {
-        // TODO: Set/restore normal priority for normal use cases
     }
 
     // Update device state
@@ -2094,8 +2173,9 @@
     internalUpdateStatusLocked(STATUS_ERROR);
 
     // Notify upstream about a device error
-    if (mListener != NULL) {
-        mListener->notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE,
+    sp<NotificationListener> listener = mListener.promote();
+    if (listener != NULL) {
+        listener->notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE,
                 CaptureResultExtras());
     }
 
@@ -2119,6 +2199,10 @@
             aeTriggerCancelOverride));
     if (res < 0) return res;
 
+    if (mInFlightMap.size() == 1) {
+        mStatusTracker->markComponentActive(mInFlightStatusId);
+    }
+
     return OK;
 }
 
@@ -2175,6 +2259,11 @@
 
         mInFlightMap.removeItemsAt(idx, 1);
 
+        // Indicate idle inFlightMap to the status tracker
+        if (mInFlightMap.size() == 0) {
+            mStatusTracker->markComponentIdle(mInFlightStatusId, Fence::NO_FENCE);
+        }
+
         ALOGVV("%s: removed frame %d from InFlightMap", __FUNCTION__, frameNumber);
      }
 
@@ -2283,13 +2372,16 @@
     captureResult.mMetadata.sort();
 
     // Check that there's a timestamp in the result metadata
-    camera_metadata_entry entry = captureResult.mMetadata.find(ANDROID_SENSOR_TIMESTAMP);
-    if (entry.count == 0) {
+    camera_metadata_entry timestamp = captureResult.mMetadata.find(ANDROID_SENSOR_TIMESTAMP);
+    if (timestamp.count == 0) {
         SET_ERR("No timestamp provided by HAL for frame %d!",
                 frameNumber);
         return;
     }
 
+    mTagMonitor.monitorMetadata(TagMonitor::RESULT,
+            frameNumber, timestamp.data.i64[0], captureResult.mMetadata);
+
     insertResultLocked(&captureResult, frameNumber, aeTriggerCancelOverride);
 }
 
@@ -2485,10 +2577,10 @@
 
 void Camera3Device::notify(const camera3_notify_msg *msg) {
     ATRACE_CALL();
-    NotificationListener *listener;
+    sp<NotificationListener> listener;
     {
         Mutex::Autolock l(mOutputLock);
-        listener = mListener;
+        listener = mListener.promote();
     }
 
     if (msg == NULL) {
@@ -2512,7 +2604,7 @@
 }
 
 void Camera3Device::notifyError(const camera3_error_msg_t &msg,
-        NotificationListener *listener) {
+        sp<NotificationListener> listener) {
 
     // Map camera HAL error codes to ICameraDeviceCallback error codes
     // Index into this with the HAL error code
@@ -2583,7 +2675,7 @@
 }
 
 void Camera3Device::notifyShutter(const camera3_shutter_msg_t &msg,
-        NotificationListener *listener) {
+        sp<NotificationListener> listener) {
     ssize_t idx;
 
     // Set timestamp for the request in the in-flight tracking
@@ -2658,6 +2750,11 @@
 }
 
 
+void Camera3Device::monitorMetadata(TagMonitor::eventSource source,
+        int64_t frameNumber, nsecs_t timestamp, const CameraMetadata& metadata) {
+    mTagMonitor.monitorMetadata(source, frameNumber, timestamp, metadata);
+}
+
 /**
  * RequestThread inner class methods
  */
@@ -2687,7 +2784,7 @@
 }
 
 void Camera3Device::RequestThread::setNotificationListener(
-        NotificationListener *listener) {
+        wp<NotificationListener> listener) {
     Mutex::Autolock l(mRequestLock);
     mListener = listener;
 }
@@ -2822,7 +2919,6 @@
 }
 
 status_t Camera3Device::RequestThread::clear(
-        NotificationListener *listener,
         /*out*/int64_t *lastFrameNumber) {
     Mutex::Autolock l(mRequestLock);
     ALOGV("RequestThread::%s:", __FUNCTION__);
@@ -2831,6 +2927,7 @@
 
     // Send errors for all requests pending in the request queue, including
     // pending repeating requests
+    sp<NotificationListener> listener = mListener.promote();
     if (listener != NULL) {
         for (RequestList::iterator it = mRequestQueue.begin();
                  it != mRequestQueue.end(); ++it) {
@@ -2972,6 +3069,7 @@
 void Camera3Device::RequestThread::checkAndStopRepeatingRequest() {
     bool surfaceAbandoned = false;
     int64_t lastFrameNumber = 0;
+    sp<NotificationListener> listener;
     {
         Mutex::Autolock l(mRequestLock);
         // Check all streams needed by repeating requests are still valid. Otherwise, stop
@@ -2988,9 +3086,11 @@
                 break;
             }
         }
+        listener = mListener.promote();
     }
-    if (surfaceAbandoned) {
-        mListener->notifyRepeatingRequestError(lastFrameNumber);
+
+    if (listener != NULL && surfaceAbandoned) {
+        listener->notifyRepeatingRequestError(lastFrameNumber);
     }
 }
 
@@ -3086,6 +3186,12 @@
 
             camera_metadata_t* cloned = clone_camera_metadata(nextRequest.halRequest.settings);
             mLatestRequest.acquire(cloned);
+
+            sp<Camera3Device> parent = mParent.promote();
+            if (parent != NULL) {
+                parent->monitorMetadata(TagMonitor::REQUEST, nextRequest.halRequest.frame_number,
+                        0, mLatestRequest);
+            }
         }
 
         if (nextRequest.halRequest.settings != NULL) {
@@ -3327,8 +3433,9 @@
 
         if (sendRequestError) {
             Mutex::Autolock l(mRequestLock);
-            if (mListener != NULL) {
-                mListener->notifyError(
+            sp<NotificationListener> listener = mListener.promote();
+            if (listener != NULL) {
+                listener->notifyError(
                         hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST,
                         captureRequest->mResultExtras);
             }
@@ -3467,8 +3574,10 @@
                 // error
                 ALOGE("%s: Can't get input buffer, skipping request:"
                         " %s (%d)", __FUNCTION__, strerror(-res), res);
-                if (mListener != NULL) {
-                    mListener->notifyError(
+
+                sp<NotificationListener> listener = mListener.promote();
+                if (listener != NULL) {
+                    listener->notifyError(
                             hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST,
                             nextRequest->mResultExtras);
                 }
@@ -3748,13 +3857,14 @@
     status_t res;
 
     Mutex::Autolock l(mLock);
+    sp<NotificationListener> listener = mListener.promote();
 
     res = stream->startPrepare(maxCount);
     if (res == OK) {
         // No preparation needed, fire listener right off
         ALOGV("%s: Stream %d already prepared", __FUNCTION__, stream->getId());
-        if (mListener) {
-            mListener->notifyPrepared(stream->getId());
+        if (listener != NULL) {
+            listener->notifyPrepared(stream->getId());
         }
         return OK;
     } else if (res != NOT_ENOUGH_DATA) {
@@ -3769,8 +3879,8 @@
         res = Thread::run("C3PrepThread", PRIORITY_BACKGROUND);
         if (res != OK) {
             ALOGE("%s: Unable to start preparer stream: %d (%s)", __FUNCTION__, res, strerror(-res));
-            if (mListener) {
-                mListener->notifyPrepared(stream->getId());
+            if (listener != NULL) {
+                listener->notifyPrepared(stream->getId());
             }
             return res;
         }
@@ -3798,7 +3908,7 @@
     return OK;
 }
 
-void Camera3Device::PreparerThread::setNotificationListener(NotificationListener *listener) {
+void Camera3Device::PreparerThread::setNotificationListener(wp<NotificationListener> listener) {
     Mutex::Autolock l(mLock);
     mListener = listener;
 }
@@ -3845,10 +3955,11 @@
 
     // This stream has finished, notify listener
     Mutex::Autolock l(mLock);
-    if (mListener) {
+    sp<NotificationListener> listener = mListener.promote();
+    if (listener != NULL) {
         ALOGV("%s: Stream %d prepare done, signaling listener", __FUNCTION__,
                 mCurrentStream->getId());
-        mListener->notifyPrepared(mCurrentStream->getId());
+        listener->notifyPrepared(mCurrentStream->getId());
     }
 
     ATRACE_ASYNC_END("stream prepare", mCurrentStream->getId());
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index 6170820..33429a6 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -30,6 +30,7 @@
 #include "common/CameraDeviceBase.h"
 #include "device3/StatusTracker.h"
 #include "device3/Camera3BufferManager.h"
+#include "utils/TagMonitor.h"
 
 /**
  * Function pointer types with C calling convention to
@@ -95,11 +96,14 @@
 
     // Actual stream creation/deletion is delayed until first request is submitted
     // If adding streams while actively capturing, will pause device before adding
-    // stream, reconfiguring device, and unpausing.
+    // stream, reconfiguring device, and unpausing. If the client create a stream
+    // with nullptr consumer surface, the client must then call setConsumer()
+    // and finish the stream configuration before starting output streaming.
     virtual status_t createStream(sp<Surface> consumer,
             uint32_t width, uint32_t height, int format,
             android_dataspace dataSpace, camera3_stream_rotation_t rotation, int *id,
-            int streamSetId = camera3::CAMERA3_STREAM_SET_ID_INVALID);
+            int streamSetId = camera3::CAMERA3_STREAM_SET_ID_INVALID,
+            uint32_t consumerUsage = 0);
     virtual status_t createInputStream(
             uint32_t width, uint32_t height, int format,
             int *id);
@@ -128,7 +132,7 @@
     // Transitions to the idle state on success
     virtual status_t waitUntilDrained();
 
-    virtual status_t setNotifyCallback(NotificationListener *listener);
+    virtual status_t setNotifyCallback(wp<NotificationListener> listener);
     virtual bool     willNotify3A();
     virtual status_t waitForNextFrame(nsecs_t timeout);
     virtual status_t getNextResult(CaptureResult *frame);
@@ -160,6 +164,12 @@
     // Methods called by subclasses
     void             notifyStatus(bool idle); // updates from StatusTracker
 
+    /**
+     * Set the deferred consumer surface to the output stream and finish the deferred
+     * consumer configuration.
+     */
+    virtual status_t setConsumerSurface(int streamId, sp<Surface> consumer);
+
   private:
     static const size_t        kDumpLockAttempts  = 10;
     static const size_t        kDumpSleepDuration = 100000; // 0.10 sec
@@ -168,7 +178,7 @@
     static const size_t        kInFlightWarnLimit = 20;
     static const size_t        kInFlightWarnLimitHighSpeed = 256; // batch size 32 * pipe depth 8
     // SCHED_FIFO priority for request submission thread in HFR mode
-    static const int           kConstrainedHighSpeedThreadPriority = 1;
+    static const int           kRequestThreadPriority = 1;
 
     struct                     RequestTrigger;
     // minimal jpeg buffer size: 256KB + blob header
@@ -450,7 +460,7 @@
                 camera3_device_t *hal3Device,
                 bool aeLockAvailable);
 
-        void     setNotificationListener(NotificationListener *listener);
+        void     setNotificationListener(wp<NotificationListener> listener);
 
         /**
          * Call after stream (re)-configuration is completed.
@@ -475,9 +485,7 @@
         /**
          * Remove all queued and repeating requests, and pending triggers
          */
-        status_t clear(NotificationListener *listener,
-                       /*out*/
-                       int64_t *lastFrameNumber = NULL);
+        status_t clear(/*out*/int64_t *lastFrameNumber = NULL);
 
         /**
          * Flush all pending requests in HAL.
@@ -593,7 +601,7 @@
         wp<camera3::StatusTracker>  mStatusTracker;
         camera3_device_t  *mHal3Device;
 
-        NotificationListener *mListener;
+        wp<NotificationListener> mListener;
 
         const int          mId;       // The camera ID
         int                mStatusId; // The RequestThread's component ID for
@@ -717,6 +725,7 @@
 
     Mutex                  mInFlightLock; // Protects mInFlightMap
     InFlightMap            mInFlightMap;
+    int                    mInFlightStatusId;
 
     status_t registerInFlight(uint32_t frameNumber,
             int32_t numBuffers, CaptureResultExtras resultExtras, bool hasInput,
@@ -749,7 +758,7 @@
         PreparerThread();
         ~PreparerThread();
 
-        void setNotificationListener(NotificationListener *listener);
+        void setNotificationListener(wp<NotificationListener> listener);
 
         /**
          * Queue up a stream to be prepared. Streams are processed by a background thread in FIFO
@@ -770,7 +779,7 @@
 
         // Guarded by mLock
 
-        NotificationListener *mListener;
+        wp<NotificationListener> mListener;
         List<sp<camera3::Camera3StreamInterface> > mPendingStreams;
         bool mActive;
         bool mCancelNow;
@@ -799,7 +808,7 @@
     uint32_t               mNextReprocessShutterFrameNumber;
     List<CaptureResult>   mResultQueue;
     Condition              mResultSignal;
-    NotificationListener  *mListener;
+    wp<NotificationListener>  mListener;
 
     /**** End scope for mOutputLock ****/
 
@@ -812,9 +821,9 @@
 
     // Specific notify handlers
     void notifyError(const camera3_error_msg_t &msg,
-            NotificationListener *listener);
+            sp<NotificationListener> listener);
     void notifyShutter(const camera3_shutter_msg_t &msg,
-            NotificationListener *listener);
+            sp<NotificationListener> listener);
 
     // helper function to return the output buffers to the streams.
     void returnOutputBuffers(const camera3_stream_buffer_t *outputBuffers,
@@ -846,6 +855,16 @@
 
     /**** End scope for mInFlightLock ****/
 
+    // Debug tracker for metadata tag value changes
+    // - Enabled with the -m <taglist> option to dumpsys, such as
+    //   dumpsys -m android.control.aeState,android.control.aeMode
+    // - Disabled with -m off
+    // - dumpsys -m 3a is a shortcut for ae/af/awbMode, State, and Triggers
+    TagMonitor mTagMonitor;
+
+    void monitorMetadata(TagMonitor::eventSource source, int64_t frameNumber,
+            nsecs_t timestamp, const CameraMetadata& metadata);
+
     /**
      * Static callback forwarding methods from HAL to instance
      */
diff --git a/services/camera/libcameraservice/device3/Camera3DummyStream.cpp b/services/camera/libcameraservice/device3/Camera3DummyStream.cpp
index 6354ef7..5123785 100644
--- a/services/camera/libcameraservice/device3/Camera3DummyStream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3DummyStream.cpp
@@ -103,6 +103,15 @@
     return false;
 }
 
+bool Camera3DummyStream::isConsumerConfigurationDeferred() const {
+    return false;
+}
+
+status_t Camera3DummyStream::setConsumer(sp<Surface> consumer) {
+    ALOGE("%s: Stream %d: Dummy stream doesn't support set consumer surface %p!",
+            __FUNCTION__, mId, consumer.get());
+    return INVALID_OPERATION;
+}
 }; // namespace camera3
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/device3/Camera3DummyStream.h b/services/camera/libcameraservice/device3/Camera3DummyStream.h
index 1f37e93..18e8a23 100644
--- a/services/camera/libcameraservice/device3/Camera3DummyStream.h
+++ b/services/camera/libcameraservice/device3/Camera3DummyStream.h
@@ -61,6 +61,16 @@
      */
     bool isVideoStream() const;
 
+    /**
+     * Return if the consumer configuration of this stream is deferred.
+     */
+    virtual bool isConsumerConfigurationDeferred() const;
+
+    /**
+     * Set the consumer surface to the output stream.
+     */
+    virtual status_t setConsumer(sp<Surface> consumer);
+
   protected:
 
     /**
diff --git a/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp b/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp
index 4824974..cb39244 100644
--- a/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp
+++ b/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp
@@ -124,6 +124,7 @@
     switch (mState) {
         case STATE_IN_RECONFIG:
         case STATE_CONFIGURED:
+        case STATE_ABANDONED:
             // OK
             break;
         default:
diff --git a/services/camera/libcameraservice/device3/Camera3OutputStream.cpp b/services/camera/libcameraservice/device3/Camera3OutputStream.cpp
index dff5a49..7229929 100644
--- a/services/camera/libcameraservice/device3/Camera3OutputStream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3OutputStream.cpp
@@ -42,7 +42,8 @@
         mTransform(0),
         mTraceFirstBuffer(true),
         mUseBufferManager(false),
-        mTimestampOffset(timestampOffset) {
+        mTimestampOffset(timestampOffset),
+        mConsumerUsage(0) {
 
     if (mConsumer == NULL) {
         ALOGE("%s: Consumer is NULL!", __FUNCTION__);
@@ -66,7 +67,8 @@
         mTraceFirstBuffer(true),
         mUseMonoTimestamp(false),
         mUseBufferManager(false),
-        mTimestampOffset(timestampOffset) {
+        mTimestampOffset(timestampOffset),
+        mConsumerUsage(0) {
 
     if (format != HAL_PIXEL_FORMAT_BLOB && format != HAL_PIXEL_FORMAT_RAW_OPAQUE) {
         ALOGE("%s: Bad format for size-only stream: %d", __FUNCTION__,
@@ -84,6 +86,39 @@
     }
 }
 
+Camera3OutputStream::Camera3OutputStream(int id,
+        uint32_t width, uint32_t height, int format,
+        uint32_t consumerUsage, android_dataspace dataSpace,
+        camera3_stream_rotation_t rotation, nsecs_t timestampOffset, int setId) :
+        Camera3IOStreamBase(id, CAMERA3_STREAM_OUTPUT, width, height,
+                            /*maxSize*/0, format, dataSpace, rotation, setId),
+        mConsumer(nullptr),
+        mTransform(0),
+        mTraceFirstBuffer(true),
+        mUseBufferManager(false),
+        mTimestampOffset(timestampOffset),
+        mConsumerUsage(consumerUsage) {
+    // Deferred consumer only support preview surface format now.
+    if (format != HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
+        ALOGE("%s: Deferred consumer only supports IMPLEMENTATION_DEFINED format now!",
+                __FUNCTION__);
+        mState = STATE_ERROR;
+    }
+
+    // Sanity check for the consumer usage flag.
+    if ((consumerUsage & GraphicBuffer::USAGE_HW_TEXTURE) == 0 &&
+            (consumerUsage & GraphicBuffer::USAGE_HW_COMPOSER) == 0) {
+        ALOGE("%s: Deferred consumer usage flag is illegal (0x%x)!", __FUNCTION__, consumerUsage);
+        mState = STATE_ERROR;
+    }
+
+    mConsumerName = String8("Deferred");
+    if (setId > CAMERA3_STREAM_SET_ID_INVALID) {
+        mBufferReleasedListener = new BufferReleasedListener(this);
+    }
+
+}
+
 Camera3OutputStream::Camera3OutputStream(int id, camera3_stream_type_t type,
                                          uint32_t width, uint32_t height,
                                          int format,
@@ -96,7 +131,8 @@
         mTransform(0),
         mTraceFirstBuffer(true),
         mUseMonoTimestamp(false),
-        mUseBufferManager(false) {
+        mUseBufferManager(false),
+        mConsumerUsage(0) {
 
     if (setId > CAMERA3_STREAM_SET_ID_INVALID) {
         mBufferReleasedListener = new BufferReleasedListener(this);
@@ -235,6 +271,7 @@
      */
     if (buffer.status == CAMERA3_BUFFER_STATUS_ERROR) {
         // Cancel buffer
+        ALOGW("A frame is dropped for stream %d", mId);
         res = currentConsumer->cancelBuffer(currentConsumer.get(),
                 container_of(buffer.buffer, ANativeWindowBuffer, handle),
                 anwReleaseFence);
@@ -481,11 +518,16 @@
         return res;
     }
 
+    // Stream configuration was not finished (can only be in STATE_IN_CONFIG or STATE_CONSTRUCTED
+    // state), don't need change the stream state, return OK.
+    if (mConsumer == nullptr) {
+        return OK;
+    }
+
     ALOGV("%s: disconnecting stream %d from native window", __FUNCTION__, getId());
 
     res = native_window_api_disconnect(mConsumer.get(),
                                        NATIVE_WINDOW_API_CAMERA);
-
     /**
      * This is not an error. if client calling process dies, the window will
      * also die and all calls to it will return DEAD_OBJECT, thus it's already
@@ -527,6 +569,12 @@
 
     status_t res;
     int32_t u = 0;
+    if (mConsumer == nullptr) {
+        // mConsumerUsage was sanitized before the Camera3OutputStream was constructed.
+        *usage = mConsumerUsage;
+        return OK;
+    }
+
     res = static_cast<ANativeWindow*>(mConsumer.get())->query(mConsumer.get(),
             NATIVE_WINDOW_CONSUMER_USAGE_BITS, &u);
 
@@ -562,7 +610,7 @@
 status_t Camera3OutputStream::setBufferManager(sp<Camera3BufferManager> bufferManager) {
     Mutex::Autolock l(mLock);
     if (mState != STATE_CONSTRUCTED) {
-        ALOGE("%s: this method can only be called when stream in in CONSTRUCTED state.",
+        ALOGE("%s: this method can only be called when stream in CONSTRUCTED state.",
                 __FUNCTION__);
         return INVALID_OPERATION;
     }
@@ -611,9 +659,9 @@
         *buffer = 0;
         ALOGW("%s: the released buffer has already been freed by the buffer queue!", __FUNCTION__);
     } else if (res != OK) {
-        // Other errors are fatal.
+        // Treat other errors as abandonment
         ALOGE("%s: detach next buffer failed: %s (%d).", __FUNCTION__, strerror(-res), res);
-        mState = STATE_ERROR;
+        mState = STATE_ABANDONED;
         return res;
     }
 
@@ -628,6 +676,26 @@
     return OK;
 }
 
+bool Camera3OutputStream::isConsumerConfigurationDeferred() const {
+    Mutex::Autolock l(mLock);
+    return mConsumer == nullptr;
+}
+
+status_t Camera3OutputStream::setConsumer(sp<Surface> consumer) {
+    if (consumer == nullptr) {
+        ALOGE("%s: it's illegal to set a null consumer surface!", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+
+    if (mConsumer != nullptr) {
+        ALOGE("%s: consumer surface was already set!", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+
+    mConsumer = consumer;
+    return OK;
+}
+
 bool Camera3OutputStream::isConsumedByHWComposer() const {
     uint32_t usage = 0;
     status_t res = getEndpointUsage(&usage);
diff --git a/services/camera/libcameraservice/device3/Camera3OutputStream.h b/services/camera/libcameraservice/device3/Camera3OutputStream.h
index 46c1465..12d497e 100644
--- a/services/camera/libcameraservice/device3/Camera3OutputStream.h
+++ b/services/camera/libcameraservice/device3/Camera3OutputStream.h
@@ -94,6 +94,16 @@
             android_dataspace dataSpace, camera3_stream_rotation_t rotation,
             nsecs_t timestampOffset, int setId = CAMERA3_STREAM_SET_ID_INVALID);
 
+    /**
+     * Set up a stream with deferred consumer for formats that have 2 dimensions, such as
+     * RAW and YUV. The consumer must be set before using this stream for output. A valid
+     * stream set id needs to be set to support buffer sharing between multiple streams.
+     */
+    Camera3OutputStream(int id, uint32_t width, uint32_t height, int format,
+            uint32_t consumerUsage, android_dataspace dataSpace,
+            camera3_stream_rotation_t rotation, nsecs_t timestampOffset,
+            int setId = CAMERA3_STREAM_SET_ID_INVALID);
+
     virtual ~Camera3OutputStream();
 
     /**
@@ -122,6 +132,16 @@
      */
     bool isConsumedByHWTexture() const;
 
+    /**
+     * Return if the consumer configuration of this stream is deferred.
+     */
+    virtual bool isConsumerConfigurationDeferred() const;
+
+    /**
+     * Set the consumer surface to the output stream.
+     */
+    virtual status_t setConsumer(sp<Surface> consumer);
+
     class BufferReleasedListener : public BnProducerListener {
         public:
           BufferReleasedListener(wp<Camera3OutputStream> parent) : mParent(parent) {}
@@ -164,6 +184,7 @@
     virtual status_t disconnectLocked();
 
     sp<Surface> mConsumer;
+
   private:
 
     static const nsecs_t       kDequeueBufferTimeout   = 1000000000; // 1 sec
@@ -203,6 +224,12 @@
     nsecs_t mTimestampOffset;
 
     /**
+     * Consumer end point usage flag set by the constructor for the deferred
+     * consumer case.
+     */
+    uint32_t    mConsumerUsage;
+
+    /**
      * Internal Camera3Stream interface
      */
     virtual status_t getBufferLocked(camera3_stream_buffer *buffer);
diff --git a/services/camera/libcameraservice/device3/Camera3OutputStreamInterface.h b/services/camera/libcameraservice/device3/Camera3OutputStreamInterface.h
index 50dce55..3f83c89 100644
--- a/services/camera/libcameraservice/device3/Camera3OutputStreamInterface.h
+++ b/services/camera/libcameraservice/device3/Camera3OutputStreamInterface.h
@@ -41,6 +41,16 @@
     virtual bool isVideoStream() const = 0;
 
     /**
+     * Return if the consumer configuration of this stream is deferred.
+     */
+    virtual bool isConsumerConfigurationDeferred() const = 0;
+
+    /**
+     * Set the consumer surface to the output stream.
+     */
+    virtual status_t setConsumer(sp<Surface> consumer) = 0;
+
+    /**
      * Detach an unused buffer from the stream.
      *
      * buffer must be non-null; fenceFd may null, and if it is non-null, but
@@ -49,7 +59,6 @@
      *
      */
     virtual status_t detachBuffer(sp<GraphicBuffer>* buffer, int* fenceFd) = 0;
-
 };
 
 } // namespace camera3
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.cpp b/services/camera/libcameraservice/device3/Camera3Stream.cpp
index 96d62d4..3ffd9d1 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Stream.cpp
@@ -55,7 +55,7 @@
     mMaxSize(maxSize),
     mState(STATE_CONSTRUCTED),
     mStatusId(StatusTracker::NO_STATUS_ID),
-    mStreamUnpreparable(false),
+    mStreamUnpreparable(true),
     mOldUsage(0),
     mOldMaxBuffers(0),
     mPrepared(false),
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.h b/services/camera/libcameraservice/device3/Camera3Stream.h
index 0755700..1ff215d 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.h
+++ b/services/camera/libcameraservice/device3/Camera3Stream.h
@@ -175,7 +175,8 @@
      *   OK on a successful configuration
      *   NO_INIT in case of a serious error from the HAL device
      *   NO_MEMORY in case of an error registering buffers
-     *   INVALID_OPERATION in case connecting to the consumer failed
+     *   INVALID_OPERATION in case connecting to the consumer failed or consumer
+     *       doesn't exist yet.
      */
     status_t         finishConfiguration(camera3_device *hal3Device);
 
diff --git a/services/camera/libcameraservice/utils/TagMonitor.cpp b/services/camera/libcameraservice/utils/TagMonitor.cpp
new file mode 100644
index 0000000..f1b65bd
--- /dev/null
+++ b/services/camera/libcameraservice/utils/TagMonitor.cpp
@@ -0,0 +1,281 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Camera3-TagMonitor"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+//#define LOG_NDEBUG 0
+
+#include "TagMonitor.h"
+
+#include <inttypes.h>
+#include <utils/Log.h>
+#include <camera/VendorTagDescriptor.h>
+
+namespace android {
+
+TagMonitor::TagMonitor():
+        mMonitoringEnabled(false),
+        mMonitoringEvents(kMaxMonitorEvents)
+{}
+
+const char* TagMonitor::k3aTags =
+        "android.control.aeMode, android.control.afMode, android.control.awbMode,"
+        "android.control.aeState, android.control.afState, android.control.awbState,"
+        "android.control.aePrecaptureTrigger, android.control.afTrigger,"
+        "android.control.aeRegions, android.control.awbRegions, android.control.afRegions,"
+        "android.control.aeExposureCompensation, android.control.aeLock, android.control.awbLock,"
+        "android.control.aeAntibandingMode, android.control.aeTargetFpsRange,"
+        "android.control.effectMode, android.control.mode, android.control.sceneMode,"
+        "android.control.videoStabilizationMode";
+
+void TagMonitor::parseTagsToMonitor(String8 tagNames) {
+    std::lock_guard<std::mutex> lock(mMonitorMutex);
+
+    // Expand shorthands
+    if (ssize_t idx = tagNames.find("3a") != -1) {
+        ssize_t end = tagNames.find(",", idx);
+        char* start = tagNames.lockBuffer(tagNames.size());
+        start[idx] = '\0';
+        char* rest = (end != -1) ? (start + end) : (start + tagNames.size());
+        tagNames = String8::format("%s%s%s", start, k3aTags, rest);
+    }
+
+    sp<VendorTagDescriptor> vTags =
+            VendorTagDescriptor::getGlobalVendorTagDescriptor();
+
+    bool gotTag = false;
+
+    char *tokenized = tagNames.lockBuffer(tagNames.size());
+    char *savePtr;
+    char *nextTagName = strtok_r(tokenized, ", ", &savePtr);
+    while (nextTagName != nullptr) {
+        uint32_t tag;
+        status_t res = CameraMetadata::getTagFromName(nextTagName, vTags.get(), &tag);
+        if (res != OK) {
+            ALOGW("%s: Unknown tag %s, ignoring", __FUNCTION__, nextTagName);
+        } else {
+            if (!gotTag) {
+                mMonitoredTagList.clear();
+                gotTag = true;
+            }
+            mMonitoredTagList.push_back(tag);
+        }
+        nextTagName = strtok_r(nullptr, ", ", &savePtr);
+    }
+
+    tagNames.unlockBuffer();
+
+    if (gotTag) {
+        // Got at least one new tag
+        mMonitoringEnabled = true;
+    }
+}
+
+void TagMonitor::disableMonitoring() {
+    mMonitoringEnabled = false;
+    mLastMonitoredRequestValues.clear();
+    mLastMonitoredResultValues.clear();
+}
+
+void TagMonitor::monitorMetadata(eventSource source, int64_t frameNumber, nsecs_t timestamp,
+        const CameraMetadata& metadata) {
+    if (!mMonitoringEnabled) return;
+
+    std::lock_guard<std::mutex> lock(mMonitorMutex);
+
+    if (timestamp == 0) {
+        timestamp = systemTime(SYSTEM_TIME_BOOTTIME);
+    }
+
+    for (auto tag : mMonitoredTagList) {
+        camera_metadata_ro_entry entry = metadata.find(tag);
+        CameraMetadata &lastValues = (source == REQUEST) ?
+                mLastMonitoredRequestValues : mLastMonitoredResultValues;
+        camera_metadata_entry lastEntry = lastValues.find(tag);
+
+        if (entry.count > 0) {
+            bool isDifferent = false;
+            if (lastEntry.count > 0) {
+                // Have a last value, compare to see if changed
+                if (lastEntry.type == entry.type &&
+                        lastEntry.count == entry.count) {
+                    // Same type and count, compare values
+                    size_t bytesPerValue = camera_metadata_type_size[lastEntry.type];
+                    size_t entryBytes = bytesPerValue * lastEntry.count;
+                    int cmp = memcmp(entry.data.u8, lastEntry.data.u8, entryBytes);
+                    if (cmp != 0) {
+                        isDifferent = true;
+                    }
+                } else {
+                    // Count or type has changed
+                    isDifferent = true;
+                }
+            } else {
+                // No last entry, so always consider to be different
+                isDifferent = true;
+            }
+
+            if (isDifferent) {
+                ALOGV("%s: Tag %s changed", __FUNCTION__, get_camera_metadata_tag_name(tag));
+                lastValues.update(entry);
+                mMonitoringEvents.emplace(source, frameNumber, timestamp, entry);
+            }
+        } else if (lastEntry.count > 0) {
+            // Value has been removed
+            ALOGV("%s: Tag %s removed", __FUNCTION__, get_camera_metadata_tag_name(tag));
+            lastValues.erase(tag);
+            entry.tag = tag;
+            entry.type = get_camera_metadata_tag_type(tag);
+            entry.count = 0;
+            mMonitoringEvents.emplace(source, frameNumber, timestamp, entry);
+        }
+    }
+}
+
+void TagMonitor::dumpMonitoredMetadata(int fd) {
+    std::lock_guard<std::mutex> lock(mMonitorMutex);
+
+    if (mMonitoringEnabled) {
+        dprintf(fd, "     Tag monitoring enabled for tags:\n");
+        for (uint32_t tag : mMonitoredTagList) {
+            dprintf(fd, "        %s.%s\n",
+                    get_camera_metadata_section_name(tag),
+                    get_camera_metadata_tag_name(tag));
+        }
+    } else {
+        dprintf(fd, "     Tag monitoring disabled (enable with -m <name1,..,nameN>)\n");
+    }
+    if (mMonitoringEvents.size() > 0) {
+        dprintf(fd, "     Monitored tag event log:\n");
+        for (const auto& event : mMonitoringEvents) {
+            int indentation = (event.source == REQUEST) ? 15 : 30;
+            dprintf(fd, "        f%d:%" PRId64 "ns: %*s%s.%s: ",
+                    event.frameNumber, event.timestamp,
+                    indentation,
+                    event.source == REQUEST ? "REQ:" : "RES:",
+                    get_camera_metadata_section_name(event.tag),
+                    get_camera_metadata_tag_name(event.tag));
+            if (event.newData.size() == 0) {
+                dprintf(fd, " (Removed)\n");
+            } else {
+                printData(fd, event.newData.data(), event.tag,
+                        event.type, event.newData.size() / camera_metadata_type_size[event.type],
+                        indentation + 18);
+            }
+        }
+    }
+
+}
+
+// TODO: Consolidate with printData from camera_metadata.h
+
+#define CAMERA_METADATA_ENUM_STRING_MAX_SIZE 29
+
+void TagMonitor::printData(int fd, const uint8_t *data_ptr, uint32_t tag,
+        int type, int count, int indentation) {
+    static int values_per_line[NUM_TYPES] = {
+        [TYPE_BYTE]     = 16,
+        [TYPE_INT32]    = 8,
+        [TYPE_FLOAT]    = 8,
+        [TYPE_INT64]    = 4,
+        [TYPE_DOUBLE]   = 4,
+        [TYPE_RATIONAL] = 4,
+    };
+    size_t type_size = camera_metadata_type_size[type];
+    char value_string_tmp[CAMERA_METADATA_ENUM_STRING_MAX_SIZE];
+    uint32_t value;
+
+    int lines = count / values_per_line[type];
+    if (count % values_per_line[type] != 0) lines++;
+
+    int index = 0;
+    int j, k;
+    for (j = 0; j < lines; j++) {
+        dprintf(fd, "%*s[", (j != 0) ? indentation + 4 : 0, "");
+        for (k = 0;
+             k < values_per_line[type] && count > 0;
+             k++, count--, index += type_size) {
+
+            switch (type) {
+                case TYPE_BYTE:
+                    value = *(data_ptr + index);
+                    if (camera_metadata_enum_snprint(tag,
+                                                     value,
+                                                     value_string_tmp,
+                                                     sizeof(value_string_tmp))
+                        == OK) {
+                        dprintf(fd, "%s ", value_string_tmp);
+                    } else {
+                        dprintf(fd, "%hhu ",
+                                *(data_ptr + index));
+                    }
+                    break;
+                case TYPE_INT32:
+                    value =
+                            *(int32_t*)(data_ptr + index);
+                    if (camera_metadata_enum_snprint(tag,
+                                                     value,
+                                                     value_string_tmp,
+                                                     sizeof(value_string_tmp))
+                        == OK) {
+                        dprintf(fd, "%s ", value_string_tmp);
+                    } else {
+                        dprintf(fd, "%" PRId32 " ",
+                                *(int32_t*)(data_ptr + index));
+                    }
+                    break;
+                case TYPE_FLOAT:
+                    dprintf(fd, "%0.8f ",
+                            *(float*)(data_ptr + index));
+                    break;
+                case TYPE_INT64:
+                    dprintf(fd, "%" PRId64 " ",
+                            *(int64_t*)(data_ptr + index));
+                    break;
+                case TYPE_DOUBLE:
+                    dprintf(fd, "%0.8f ",
+                            *(double*)(data_ptr + index));
+                    break;
+                case TYPE_RATIONAL: {
+                    int32_t numerator = *(int32_t*)(data_ptr + index);
+                    int32_t denominator = *(int32_t*)(data_ptr + index + 4);
+                    dprintf(fd, "(%d / %d) ",
+                            numerator, denominator);
+                    break;
+                }
+                default:
+                    dprintf(fd, "??? ");
+            }
+        }
+        dprintf(fd, "]\n");
+    }
+}
+
+template<typename T>
+TagMonitor::MonitorEvent::MonitorEvent(eventSource src, uint32_t frameNumber, nsecs_t timestamp,
+        const T &value) :
+        source(src),
+        frameNumber(frameNumber),
+        timestamp(timestamp),
+        tag(value.tag),
+        type(value.type),
+        newData(value.data.u8, value.data.u8 + camera_metadata_type_size[value.type] * value.count) {
+}
+
+TagMonitor::MonitorEvent::~MonitorEvent() {
+}
+
+} // namespace android
diff --git a/services/camera/libcameraservice/utils/TagMonitor.h b/services/camera/libcameraservice/utils/TagMonitor.h
new file mode 100644
index 0000000..d7aa419
--- /dev/null
+++ b/services/camera/libcameraservice/utils/TagMonitor.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SERVERS_CAMERA_TAGMONITOR_H
+#define ANDROID_SERVERS_CAMERA_TAGMONITOR_H
+
+#include <vector>
+#include <atomic>
+#include <mutex>
+
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+#include <utils/Timers.h>
+
+#include <media/RingBuffer.h>
+#include <system/camera_metadata.h>
+#include <camera/CameraMetadata.h>
+
+namespace android {
+
+/**
+ * A monitor for camera metadata values.
+ * Tracks changes to specified metadata values over time, keeping a circular
+ * buffer log that can be dumped at will. */
+class TagMonitor {
+  public:
+    enum eventSource {
+        REQUEST,
+        RESULT
+    };
+
+    TagMonitor();
+
+    // Parse tag name list (comma-separated) and if valid, enable monitoring
+    // If invalid, do nothing.
+    // Recognizes "3a" as a shortcut for enabling tracking 3A state, mode, and
+    // triggers
+    void parseTagsToMonitor(String8 tagNames);
+
+    // Disable monitoring; does not clear the event log
+    void disableMonitoring();
+
+    // Scan through the metadata and update the monitoring information
+    void monitorMetadata(eventSource source, int64_t frameNumber,
+            nsecs_t timestamp, const CameraMetadata& metadata);
+
+    // Dump current event log to the provided fd
+    void dumpMonitoredMetadata(int fd);
+
+  private:
+
+    static void printData(int fd, const uint8_t *data_ptr, uint32_t tag,
+            int type, int count, int indentation);
+
+    std::atomic<bool> mMonitoringEnabled;
+    std::mutex mMonitorMutex;
+
+    // Current tags to monitor and record changes to
+    std::vector<uint32_t> mMonitoredTagList;
+
+    // Latest-seen values of tracked tags
+    CameraMetadata mLastMonitoredRequestValues;
+    CameraMetadata mLastMonitoredResultValues;
+
+    /**
+     * A monitoring event
+     * Stores a new metadata field value and the timestamp at which it changed.
+     * Copies the source metadata value array and frees it on destruct.
+     */
+    struct MonitorEvent {
+        template<typename T>
+        MonitorEvent(eventSource src, uint32_t frameNumber, nsecs_t timestamp,
+                const T &newValue);
+        ~MonitorEvent();
+
+        eventSource source;
+        uint32_t frameNumber;
+        nsecs_t timestamp;
+        uint32_t tag;
+        uint8_t type;
+        std::vector<uint8_t> newData;
+    };
+
+    // A ring buffer for tracking the last kMaxMonitorEvents metadata changes
+    static const int kMaxMonitorEvents = 100;
+    RingBuffer<MonitorEvent> mMonitoringEvents;
+
+    // 3A fields to use with the "3a" option
+    static const char *k3aTags;
+};
+
+} // namespace android
+
+#endif
diff --git a/services/mediacodec/minijail/minijail.cpp b/services/mediacodec/minijail/minijail.cpp
index 72bb1af..463f161 100644
--- a/services/mediacodec/minijail/minijail.cpp
+++ b/services/mediacodec/minijail/minijail.cpp
@@ -15,7 +15,12 @@
 ** limitations under the License.
 */
 
-#include <cutils/log.h>
+#define LOG_TAG "minijail"
+
+#include <unistd.h>
+
+#include <log/log.h>
+
 #include <libminijail.h>
 
 #include "minijail.h"
diff --git a/services/mediaextractor/minijail/minijail.cpp b/services/mediaextractor/minijail/minijail.cpp
index 421a1e0..c44d00d 100644
--- a/services/mediaextractor/minijail/minijail.cpp
+++ b/services/mediaextractor/minijail/minijail.cpp
@@ -15,7 +15,12 @@
 ** limitations under the License.
 */
 
-#include <cutils/log.h>
+#define LOG_TAG "minijail"
+
+#include <unistd.h>
+
+#include <log/log.h>
+
 #include <libminijail.h>
 
 #include "minijail.h"
diff --git a/services/radio/RadioService.cpp b/services/radio/RadioService.cpp
index 5a3f750..3448678 100644
--- a/services/radio/RadioService.cpp
+++ b/services/radio/RadioService.cpp
@@ -84,10 +84,11 @@
     radio_properties_t properties;
     properties.handle =
             (radio_handle_t)android_atomic_inc(&mNextUniqueId);
-
-    ALOGI("loaded default module %s, handle %d", properties.product, properties.handle);
-
     convertProperties(&properties, &halProperties);
+
+    ALOGI("loaded default module %s, ver %s, handle %d", properties.product,
+        properties.version, properties.handle);
+
     sp<Module> module = new Module(dev, properties);
     mModules.add(properties.handle, module);
 }
diff --git a/services/soundtrigger/Android.mk b/services/soundtrigger/Android.mk
index 90bcdbc..0f5bbba 100644
--- a/services/soundtrigger/Android.mk
+++ b/services/soundtrigger/Android.mk
@@ -39,6 +39,8 @@
 
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
+LOCAL_CFLAGS := -Wall -Werror
+
 LOCAL_MODULE:= libsoundtriggerservice
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/services/soundtrigger/SoundTriggerHwService.cpp b/services/soundtrigger/SoundTriggerHwService.cpp
index ac379bd..6a52b9c 100644
--- a/services/soundtrigger/SoundTriggerHwService.cpp
+++ b/services/soundtrigger/SoundTriggerHwService.cpp
@@ -542,6 +542,22 @@
     struct sound_trigger_sound_model *sound_model =
             (struct sound_trigger_sound_model *)modelMemory->pointer();
 
+    size_t structSize;
+    if (sound_model->type == SOUND_MODEL_TYPE_KEYPHRASE) {
+        structSize = sizeof(struct sound_trigger_phrase_sound_model);
+    } else {
+        structSize = sizeof(struct sound_trigger_sound_model);
+    }
+
+    if (sound_model->data_offset < structSize ||
+           sound_model->data_size > (UINT_MAX - sound_model->data_offset) ||
+           modelMemory->size() < sound_model->data_offset ||
+           sound_model->data_size > (modelMemory->size() - sound_model->data_offset)) {
+        android_errorWriteLog(0x534e4554, "30148546");
+        ALOGE("loadSoundModel() data_size is too big");
+        return BAD_VALUE;
+    }
+
     AutoMutex lock(mLock);
 
     if (mModels.size() >= mDescriptor.properties.max_sound_models) {
@@ -607,11 +623,23 @@
         return PERMISSION_DENIED;
     }
 
-    if (dataMemory != 0 && dataMemory->pointer() == NULL) {
-        ALOGE("startRecognition() dataMemory is non-0 but has NULL pointer()");
+    if (dataMemory == 0 || dataMemory->pointer() == NULL) {
+        ALOGE("startRecognition() dataMemory is 0 or has NULL pointer()");
         return BAD_VALUE;
 
     }
+
+    struct sound_trigger_recognition_config *config =
+            (struct sound_trigger_recognition_config *)dataMemory->pointer();
+
+    if (config->data_offset < sizeof(struct sound_trigger_recognition_config) ||
+            config->data_size > (UINT_MAX - config->data_offset) ||
+            dataMemory->size() < config->data_offset ||
+            config->data_size > (dataMemory->size() - config->data_offset)) {
+        ALOGE("startRecognition() data_size is too big");
+        return BAD_VALUE;
+    }
+
     AutoMutex lock(mLock);
     if (mServiceState == SOUND_TRIGGER_STATE_DISABLED) {
         return INVALID_OPERATION;
@@ -620,17 +648,11 @@
     if (model == 0) {
         return BAD_VALUE;
     }
-    if ((dataMemory == 0) ||
-            (dataMemory->size() < sizeof(struct sound_trigger_recognition_config))) {
-        return BAD_VALUE;
-    }
 
     if (model->mState == Model::STATE_ACTIVE) {
         return INVALID_OPERATION;
     }
 
-    struct sound_trigger_recognition_config *config =
-            (struct sound_trigger_recognition_config *)dataMemory->pointer();
 
     //TODO: get capture handle and device from audio policy service
     config->capture_handle = model->mCaptureIOHandle;
diff --git a/soundtrigger/SoundTrigger.cpp b/soundtrigger/SoundTrigger.cpp
index 2138cb7..e959b83 100644
--- a/soundtrigger/SoundTrigger.cpp
+++ b/soundtrigger/SoundTrigger.cpp
@@ -55,7 +55,7 @@
     sp<DeathNotifier>         gDeathNotifier;
 }; // namespace anonymous
 
-const sp<ISoundTriggerHwService>& SoundTrigger::getSoundTriggerHwService()
+const sp<ISoundTriggerHwService> SoundTrigger::getSoundTriggerHwService()
 {
     Mutex::Autolock _l(gLock);
     if (gSoundTriggerHwService.get() == 0) {
@@ -84,7 +84,7 @@
                                  uint32_t *numModules)
 {
     ALOGV("listModules()");
-    const sp<ISoundTriggerHwService>& service = getSoundTriggerHwService();
+    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
     if (service == 0) {
         return NO_INIT;
     }
@@ -96,7 +96,7 @@
 {
     ALOGV("attach()");
     sp<SoundTrigger> soundTrigger;
-    const sp<ISoundTriggerHwService>& service = getSoundTriggerHwService();
+    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
     if (service == 0) {
         return soundTrigger;
     }
@@ -116,7 +116,7 @@
 status_t SoundTrigger::setCaptureState(bool active)
 {
     ALOGV("setCaptureState(%d)", active);
-    const sp<ISoundTriggerHwService>& service = getSoundTriggerHwService();
+    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
     if (service == 0) {
         return NO_INIT;
     }