diff --git a/camera/ndk/impl/ACameraMetadata.cpp b/camera/ndk/impl/ACameraMetadata.cpp
index ab99e38..c0da592 100644
--- a/camera/ndk/impl/ACameraMetadata.cpp
+++ b/camera/ndk/impl/ACameraMetadata.cpp
@@ -278,6 +278,7 @@
         case ACAMERA_CONTROL_SCENE_MODE:
         case ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE:
         case ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST:
+        case ACAMERA_CONTROL_ENABLE_ZSL:
         case ACAMERA_EDGE_MODE:
         case ACAMERA_FLASH_MODE:
         case ACAMERA_HOT_PIXEL_MODE:
diff --git a/drm/libmediadrm/Android.mk b/drm/libmediadrm/Android.mk
index 3f0e663..14740e6 100644
--- a/drm/libmediadrm/Android.mk
+++ b/drm/libmediadrm/Android.mk
@@ -7,14 +7,21 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-    Crypto.cpp \
-    Drm.cpp \
     DrmSessionManager.cpp \
     ICrypto.cpp \
     IDrm.cpp \
     IDrmClient.cpp \
     IMediaDrmService.cpp \
     SharedLibrary.cpp
+ifeq ($(ENABLE_TREBLE), true)
+LOCAL_SRC_FILES += \
+    DrmHal.cpp \
+    CryptoHal.cpp
+else
+LOCAL_SRC_FILES += \
+    Drm.cpp \
+    Crypto.cpp
+endif
 
 LOCAL_SHARED_LIBRARIES := \
     libbinder \
@@ -24,6 +31,13 @@
     libmediautils \
     libstagefright_foundation \
     libutils
+ifeq ($(ENABLE_TREBLE), true)
+LOCAL_SHARED_LIBRARIES += \
+    android.hidl.base@1.0 \
+    android.hardware.drm@1.0 \
+    libhidlbase \
+    libhidlmemory
+endif
 
 LOCAL_CFLAGS += -Werror -Wno-error=deprecated-declarations -Wall
 
diff --git a/drm/libmediadrm/Crypto.cpp b/drm/libmediadrm/Crypto.cpp
index 79633cb..d93dad6 100644
--- a/drm/libmediadrm/Crypto.cpp
+++ b/drm/libmediadrm/Crypto.cpp
@@ -233,16 +233,12 @@
     return mPlugin->requiresSecureDecoderComponent(mime);
 }
 
-ssize_t Crypto::decrypt(
-        DestinationType dstType,
-        const uint8_t key[16],
-        const uint8_t iv[16],
-        CryptoPlugin::Mode mode,
-        const CryptoPlugin::Pattern &pattern,
-        const sp<IMemory> &sharedBuffer, size_t offset,
+ssize_t Crypto::decrypt(const uint8_t key[16], const uint8_t iv[16],
+        CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
+        const sp<IMemory> &source, size_t offset,
         const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
-        void *dstPtr,
-        AString *errorDetailMsg) {
+        const ICrypto::DestinationBuffer &destination, AString *errorDetailMsg) {
+
     Mutex::Autolock autoLock(mLock);
 
     if (mInitCheck != OK) {
@@ -253,12 +249,21 @@
         return -EINVAL;
     }
 
-    const void *srcPtr = static_cast<uint8_t *>(sharedBuffer->pointer()) + offset;
+    const void *srcPtr = static_cast<uint8_t *>(source->pointer()) + offset;
 
-    return mPlugin->decrypt(
-            dstType != kDestinationTypeVmPointer,
-            key, iv, mode, pattern, srcPtr, subSamples, numSubSamples, dstPtr,
-            errorDetailMsg);
+    void *destPtr;
+    bool secure = false;
+    if (destination.mType == kDestinationTypeNativeHandle) {
+        destPtr = static_cast<void *>(destination.mHandle);
+        secure = true;
+    } else {
+        destPtr = destination.mSharedMemory->pointer();
+    }
+
+    ssize_t result = mPlugin->decrypt(secure, key, iv, mode, pattern, srcPtr, subSamples,
+            numSubSamples, destPtr, errorDetailMsg);
+
+    return result;
 }
 
 void Crypto::notifyResolution(uint32_t width, uint32_t height) {
diff --git a/drm/libmediadrm/CryptoHal.cpp b/drm/libmediadrm/CryptoHal.cpp
new file mode 100644
index 0000000..f1f3b01
--- /dev/null
+++ b/drm/libmediadrm/CryptoHal.cpp
@@ -0,0 +1,328 @@
+/*
+ * Copyright (C) 2017 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_NDEBUG 0
+#define LOG_TAG "CryptoHal"
+#include <utils/Log.h>
+#include <dirent.h>
+#include <dlfcn.h>
+
+#include <android/hardware/drm/1.0/types.h>
+
+#include <binder/IMemory.h>
+#include <cutils/native_handle.h>
+#include <media/CryptoHal.h>
+#include <media/hardware/CryptoAPI.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AString.h>
+#include <media/stagefright/foundation/hexdump.h>
+#include <media/stagefright/MediaErrors.h>
+
+using ::android::hardware::drm::V1_0::BufferType;
+using ::android::hardware::drm::V1_0::DestinationBuffer;
+using ::android::hardware::drm::V1_0::ICryptoFactory;
+using ::android::hardware::drm::V1_0::ICryptoPlugin;
+using ::android::hardware::drm::V1_0::Mode;
+using ::android::hardware::drm::V1_0::Pattern;
+using ::android::hardware::drm::V1_0::SharedBuffer;
+using ::android::hardware::drm::V1_0::Status;
+using ::android::hardware::drm::V1_0::SubSample;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_handle;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+
+namespace android {
+
+static status_t toStatusT(Status status) {
+    switch (status) {
+    case Status::OK:
+        return OK;
+    case Status::ERROR_DRM_NO_LICENSE:
+        return ERROR_DRM_NO_LICENSE;
+    case Status::ERROR_DRM_LICENSE_EXPIRED:
+        return ERROR_DRM_LICENSE_EXPIRED;
+    case Status::ERROR_DRM_RESOURCE_BUSY:
+        return ERROR_DRM_RESOURCE_BUSY;
+    case Status::ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION:
+        return ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION;
+    case Status::ERROR_DRM_SESSION_NOT_OPENED:
+        return ERROR_DRM_SESSION_NOT_OPENED;
+    case Status::ERROR_DRM_CANNOT_HANDLE:
+        return ERROR_DRM_CANNOT_HANDLE;
+    default:
+        return UNKNOWN_ERROR;
+    }
+}
+
+
+static hidl_vec<uint8_t> toHidlVec(const Vector<uint8_t> &vector) {
+    hidl_vec<uint8_t> vec;
+    vec.setToExternal(const_cast<uint8_t *>(vector.array()), vector.size());
+    return vec;
+}
+
+static hidl_vec<uint8_t> toHidlVec(const void *ptr, size_t size) {
+    hidl_vec<uint8_t> vec;
+    vec.resize(size);
+    memcpy(vec.data(), ptr, size);
+    return vec;
+}
+
+static hidl_array<uint8_t, 16> toHidlArray16(const uint8_t *ptr) {
+    if (!ptr) {
+        return hidl_array<uint8_t, 16>();
+    }
+    return hidl_array<uint8_t, 16>(ptr);
+}
+
+
+static ::SharedBuffer toSharedBuffer(const sp<IMemory>& sharedBuffer) {
+    ssize_t offset;
+    size_t size;
+    sharedBuffer->getMemory(&offset, &size);
+
+    ::SharedBuffer buffer;
+    buffer.offset = offset >= 0 ? offset : 0;
+    buffer.size = size;
+    return buffer;
+}
+
+static String8 toString8(hidl_string hString) {
+    return String8(hString.c_str());
+}
+
+
+CryptoHal::CryptoHal()
+    : mFactory(makeCryptoFactory()),
+      mInitCheck((mFactory == NULL) ? ERROR_UNSUPPORTED : NO_INIT),
+      mHeapBase(NULL) {
+}
+
+CryptoHal::~CryptoHal() {
+}
+
+
+sp<ICryptoFactory> CryptoHal::makeCryptoFactory() {
+    sp<ICryptoFactory> factory = ICryptoFactory::getService("crypto");
+    if (factory == NULL) {
+        ALOGE("Failed to make crypto factory");
+    }
+    return factory;
+}
+
+sp<ICryptoPlugin> CryptoHal::makeCryptoPlugin(const uint8_t uuid[16],
+        const void *initData, size_t initDataSize) {
+    if (mFactory == NULL){
+        return NULL;
+    }
+
+    sp<ICryptoPlugin> plugin;
+    Return<void> hResult = mFactory->createPlugin(toHidlArray16(uuid),
+            toHidlVec(initData, initDataSize),
+            [&](Status status, const sp<ICryptoPlugin>& hPlugin) {
+                if (status != Status::OK) {
+                    ALOGE("Failed to make crypto plugin");
+                    return;
+                }
+                plugin = hPlugin;
+            }
+        );
+    return plugin;
+}
+
+
+status_t CryptoHal::initCheck() const {
+    return mInitCheck;
+}
+
+
+bool CryptoHal::isCryptoSchemeSupported(const uint8_t uuid[16]) {
+    Mutex::Autolock autoLock(mLock);
+    if (mFactory != NULL) {
+        return mFactory->isCryptoSchemeSupported(uuid);
+    }
+    return false;
+}
+
+status_t CryptoHal::createPlugin(
+        const uint8_t uuid[16], const void *data, size_t size) {
+    Mutex::Autolock autoLock(mLock);
+
+    mPlugin = makeCryptoPlugin(uuid, data, size);
+
+    if (mPlugin == NULL) {
+        mInitCheck = ERROR_UNSUPPORTED;
+    } else {
+        mInitCheck = OK;
+    }
+
+    return mInitCheck;
+}
+
+status_t CryptoHal::destroyPlugin() {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    mPlugin.clear();
+    return OK;
+}
+
+bool CryptoHal::requiresSecureDecoderComponent(const char *mime) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    return mPlugin->requiresSecureDecoderComponent(hidl_string(mime));
+}
+
+
+/**
+ * If the heap base isn't set, get the heap base from the IMemory
+ * and send it to the HAL so it can map a remote heap of the same
+ * size.  Once the heap base is established, shared memory buffers
+ * are sent by providing an offset into the heap and a buffer size.
+ */
+status_t CryptoHal::setHeapBase(const sp<IMemory>& sharedBuffer) {
+    sp<IMemoryHeap> heap = sharedBuffer->getMemory(NULL, NULL);
+    if (mHeapBase != heap->getBase()) {
+        int fd = heap->getHeapID();
+        native_handle_t* nativeHandle = native_handle_create(1, 0);
+        nativeHandle->data[0] = fd;
+        auto hidlHandle = hidl_handle(nativeHandle);
+        auto hidlMemory = hidl_memory("ashmem", hidlHandle, heap->getSize());
+        mHeapBase = heap->getBase();
+        Return<void> hResult = mPlugin->setSharedBufferBase(hidlMemory);
+        if (!hResult.isOk()) {
+            return DEAD_OBJECT;
+        }
+    }
+    return OK;
+}
+
+ssize_t CryptoHal::decrypt(const uint8_t keyId[16], const uint8_t iv[16],
+        CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
+        const sp<IMemory> &source, size_t offset,
+        const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
+        const ICrypto::DestinationBuffer &destination, AString *errorDetailMsg) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    // Establish the base of the shared memory heap
+    setHeapBase(source);
+
+    Mode hMode;
+    switch(mode) {
+    case CryptoPlugin::kMode_Unencrypted:
+        hMode = Mode::UNENCRYPTED ;
+        break;
+    case CryptoPlugin::kMode_AES_CTR:
+        hMode = Mode::AES_CTR;
+        break;
+    case CryptoPlugin::kMode_AES_WV:
+        hMode = Mode::AES_CBC_CTS;
+        break;
+    case CryptoPlugin::kMode_AES_CBC:
+        hMode = Mode::AES_CBC;
+        break;
+    default:
+        return UNKNOWN_ERROR;
+    }
+
+    Pattern hPattern;
+    hPattern.encryptBlocks = pattern.mEncryptBlocks;
+    hPattern.skipBlocks = pattern.mSkipBlocks;
+
+    std::vector<SubSample> stdSubSamples;
+    for (size_t i = 0; i < numSubSamples; i++) {
+        SubSample subSample;
+        subSample.numBytesOfClearData = subSamples[i].mNumBytesOfClearData;
+        subSample.numBytesOfEncryptedData = subSamples[i].mNumBytesOfEncryptedData;
+        stdSubSamples.push_back(subSample);
+    }
+    auto hSubSamples = hidl_vec<SubSample>(stdSubSamples);
+
+    bool secure;
+    ::DestinationBuffer hDestination;
+    if (destination.mType == kDestinationTypeSharedMemory) {
+        hDestination.type = BufferType::SHARED_MEMORY;
+        hDestination.nonsecureMemory = toSharedBuffer(destination.mSharedMemory);
+        secure = false;
+    } else {
+        hDestination.type = BufferType::NATIVE_HANDLE;
+        hDestination.secureMemory = hidl_handle(destination.mHandle);
+        secure = true;
+    }
+
+
+    status_t err = UNKNOWN_ERROR;
+    uint32_t bytesWritten = 0;
+
+    Return<void> hResult = mPlugin->decrypt(secure, toHidlArray16(keyId), toHidlArray16(iv), hMode,
+            hPattern, hSubSamples, toSharedBuffer(source), offset, hDestination,
+            [&](Status status, uint32_t hBytesWritten, hidl_string hDetailedError) {
+                if (status == Status::OK) {
+                    bytesWritten = hBytesWritten;
+                    *errorDetailMsg = toString8(hDetailedError);
+                }
+                err = toStatusT(status);
+            }
+        );
+
+    if (!hResult.isOk()) {
+        err = DEAD_OBJECT;
+    }
+
+    if (err == OK) {
+        return bytesWritten;
+    }
+    return err;
+}
+
+void CryptoHal::notifyResolution(uint32_t width, uint32_t height) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return;
+    }
+
+    mPlugin->notifyResolution(width, height);
+}
+
+status_t CryptoHal::setMediaDrmSession(const Vector<uint8_t> &sessionId) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    return toStatusT(mPlugin->setMediaDrmSession(toHidlVec(sessionId)));
+}
+
+}  // namespace android
diff --git a/drm/libmediadrm/Drm.cpp b/drm/libmediadrm/Drm.cpp
index 07e9414..e3176e3 100644
--- a/drm/libmediadrm/Drm.cpp
+++ b/drm/libmediadrm/Drm.cpp
@@ -303,7 +303,8 @@
     return true;
 }
 
-status_t Drm::createPlugin(const uint8_t uuid[16]) {
+status_t Drm::createPlugin(const uint8_t uuid[16],
+                           const String8& /* appPackageName */) {
     Mutex::Autolock autoLock(mLock);
 
     if (mPlugin != NULL) {
@@ -319,7 +320,12 @@
     }
 
     status_t result = mFactory->createDrmPlugin(uuid, &mPlugin);
-    mPlugin->setListener(this);
+    if (mPlugin) {
+        mPlugin->setListener(this);
+    } else {
+        ALOGE("Failed to create plugin");
+        return UNEXPECTED_NULL;
+    }
     return result;
 }
 
diff --git a/drm/libmediadrm/DrmHal.cpp b/drm/libmediadrm/DrmHal.cpp
new file mode 100644
index 0000000..42dce35
--- /dev/null
+++ b/drm/libmediadrm/DrmHal.cpp
@@ -0,0 +1,942 @@
+/*
+ * Copyright (C) 2017 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_NDEBUG 0
+#define LOG_TAG "DrmHal"
+#include <utils/Log.h>
+
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+#include <dirent.h>
+#include <dlfcn.h>
+
+#include <android/hardware/drm/1.0/IDrmFactory.h>
+#include <android/hardware/drm/1.0/IDrmPlugin.h>
+#include <android/hardware/drm/1.0/types.h>
+
+#include <media/DrmHal.h>
+#include <media/DrmSessionClientInterface.h>
+#include <media/DrmSessionManager.h>
+#include <media/drm/DrmAPI.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AString.h>
+#include <media/stagefright/foundation/hexdump.h>
+#include <media/stagefright/MediaErrors.h>
+
+using ::android::hardware::drm::V1_0::EventType;
+using ::android::hardware::drm::V1_0::IDrmFactory;
+using ::android::hardware::drm::V1_0::IDrmPlugin;
+using ::android::hardware::drm::V1_0::KeyedVector;
+using ::android::hardware::drm::V1_0::KeyRequestType;
+using ::android::hardware::drm::V1_0::KeyStatus;
+using ::android::hardware::drm::V1_0::KeyStatusType;
+using ::android::hardware::drm::V1_0::KeyType;
+using ::android::hardware::drm::V1_0::KeyValue;
+using ::android::hardware::drm::V1_0::SecureStop;
+using ::android::hardware::drm::V1_0::Status;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+namespace android {
+
+static inline int getCallingPid() {
+    return IPCThreadState::self()->getCallingPid();
+}
+
+static bool checkPermission(const char* permissionString) {
+    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
+    bool ok = checkCallingPermission(String16(permissionString));
+    if (!ok) ALOGE("Request requires %s", permissionString);
+    return ok;
+}
+
+static const Vector<uint8_t> toVector(const hidl_vec<uint8_t> &vec) {
+    Vector<uint8_t> vector;
+    vector.appendArray(vec.data(), vec.size());
+    return *const_cast<const Vector<uint8_t> *>(&vector);
+}
+
+static hidl_vec<uint8_t> toHidlVec(const Vector<uint8_t> &vector) {
+    hidl_vec<uint8_t> vec;
+    vec.setToExternal(const_cast<uint8_t *>(vector.array()), vector.size());
+    return vec;
+}
+
+static String8 toString8(const hidl_string &string) {
+    return String8(string.c_str());
+}
+
+static hidl_string toHidlString(const String8& string) {
+    return hidl_string(string.string());
+}
+
+
+static ::KeyedVector toHidlKeyedVector(const KeyedVector<String8, String8>&
+        keyedVector) {
+    std::vector<KeyValue> stdKeyedVector;
+    for (size_t i = 0; i < keyedVector.size(); i++) {
+        KeyValue keyValue;
+        keyValue.key = toHidlString(keyedVector.keyAt(i));
+        keyValue.value = toHidlString(keyedVector.valueAt(i));
+        stdKeyedVector.push_back(keyValue);
+    }
+    return ::KeyedVector(stdKeyedVector);
+}
+
+static KeyedVector<String8, String8> toKeyedVector(const ::KeyedVector&
+        hKeyedVector) {
+    KeyedVector<String8, String8> keyedVector;
+    for (size_t i = 0; i < hKeyedVector.size(); i++) {
+        keyedVector.add(toString8(hKeyedVector[i].key),
+                toString8(hKeyedVector[i].value));
+    }
+    return keyedVector;
+}
+
+static List<Vector<uint8_t> > toSecureStops(const hidl_vec<SecureStop>&
+        hSecureStops) {
+    List<Vector<uint8_t> > secureStops;
+    for (size_t i = 0; i < hSecureStops.size(); i++) {
+        secureStops.push_back(toVector(hSecureStops[i].opaqueData));
+    }
+    return secureStops;
+}
+
+static status_t toStatusT(Status status) {
+    switch (status) {
+    case Status::OK:
+        return OK;
+        break;
+    case Status::ERROR_DRM_NO_LICENSE:
+        return ERROR_DRM_NO_LICENSE;
+        break;
+    case Status::ERROR_DRM_LICENSE_EXPIRED:
+        return ERROR_DRM_LICENSE_EXPIRED;
+        break;
+    case Status::ERROR_DRM_SESSION_NOT_OPENED:
+        return ERROR_DRM_SESSION_NOT_OPENED;
+        break;
+    case Status::ERROR_DRM_CANNOT_HANDLE:
+        return ERROR_DRM_CANNOT_HANDLE;
+        break;
+    case Status::ERROR_DRM_INVALID_STATE:
+        return ERROR_DRM_TAMPER_DETECTED;
+        break;
+    case Status::BAD_VALUE:
+        return BAD_VALUE;
+        break;
+    case Status::ERROR_DRM_NOT_PROVISIONED:
+        return ERROR_DRM_NOT_PROVISIONED;
+        break;
+    case Status::ERROR_DRM_RESOURCE_BUSY:
+        return ERROR_DRM_RESOURCE_BUSY;
+        break;
+    case Status::ERROR_DRM_DEVICE_REVOKED:
+        return ERROR_DRM_DEVICE_REVOKED;
+        break;
+    case Status::ERROR_DRM_UNKNOWN:
+    default:
+        return ERROR_DRM_UNKNOWN;
+        break;
+    }
+}
+
+
+Mutex DrmHal::mLock;
+
+struct DrmSessionClient : public DrmSessionClientInterface {
+    explicit DrmSessionClient(DrmHal* drm) : mDrm(drm) {}
+
+    virtual bool reclaimSession(const Vector<uint8_t>& sessionId) {
+        sp<DrmHal> drm = mDrm.promote();
+        if (drm == NULL) {
+            return true;
+        }
+        status_t err = drm->closeSession(sessionId);
+        if (err != OK) {
+            return false;
+        }
+        drm->sendEvent(EventType::SESSION_RECLAIMED,
+                toHidlVec(sessionId), hidl_vec<uint8_t>());
+        return true;
+    }
+
+protected:
+    virtual ~DrmSessionClient() {}
+
+private:
+    wp<DrmHal> mDrm;
+
+    DISALLOW_EVIL_CONSTRUCTORS(DrmSessionClient);
+};
+
+DrmHal::DrmHal()
+   : mDrmSessionClient(new DrmSessionClient(this)),
+     mFactory(makeDrmFactory()),
+     mInitCheck((mFactory == NULL) ? ERROR_UNSUPPORTED : NO_INIT) {
+}
+
+DrmHal::~DrmHal() {
+    DrmSessionManager::Instance()->removeDrm(mDrmSessionClient);
+}
+
+sp<IDrmFactory> DrmHal::makeDrmFactory() {
+    sp<IDrmFactory> factory = IDrmFactory::getService("drm");
+    if (factory == NULL) {
+        ALOGE("Failed to make drm factory");
+    }
+    return factory;
+}
+
+sp<IDrmPlugin> DrmHal::makeDrmPlugin(const uint8_t uuid[16],
+        const String8& appPackageName) {
+    if (mFactory == NULL){
+        return NULL;
+    }
+
+    sp<IDrmPlugin> plugin;
+    Return<void> hResult = mFactory->createPlugin(uuid, appPackageName.string(),
+            [&](Status status, const sp<IDrmPlugin>& hPlugin) {
+      if (status != Status::OK) {
+        ALOGD("Failed to make drm plugin");
+        return;
+      }
+      plugin = hPlugin;
+    }
+    );
+    return plugin;
+}
+
+status_t DrmHal::initCheck() const {
+    return mInitCheck;
+}
+
+status_t DrmHal::setListener(const sp<IDrmClient>& listener)
+{
+    Mutex::Autolock lock(mEventLock);
+    if (mListener != NULL){
+        IInterface::asBinder(mListener)->unlinkToDeath(this);
+    }
+    if (listener != NULL) {
+        IInterface::asBinder(listener)->linkToDeath(this);
+    }
+    mListener = listener;
+    return NO_ERROR;
+}
+
+Return<void> DrmHal::sendEvent(EventType hEventType,
+        const hidl_vec<uint8_t>& sessionId, const hidl_vec<uint8_t>& data) {
+
+    mEventLock.lock();
+    sp<IDrmClient> listener = mListener;
+    mEventLock.unlock();
+
+    if (listener != NULL) {
+        Parcel obj;
+        writeByteArray(obj, sessionId);
+        writeByteArray(obj, data);
+
+        Mutex::Autolock lock(mNotifyLock);
+        DrmPlugin::EventType eventType;
+        switch(hEventType) {
+        case EventType::PROVISION_REQUIRED:
+            eventType = DrmPlugin::kDrmPluginEventProvisionRequired;
+            break;
+        case EventType::KEY_NEEDED:
+            eventType = DrmPlugin::kDrmPluginEventKeyNeeded;
+            break;
+        case EventType::KEY_EXPIRED:
+            eventType = DrmPlugin::kDrmPluginEventKeyExpired;
+            break;
+        case EventType::VENDOR_DEFINED:
+            eventType = DrmPlugin::kDrmPluginEventVendorDefined;
+            break;
+        default:
+            return Void();
+        }
+        listener->notify(eventType, 0, &obj);
+    }
+    return Void();
+}
+
+Return<void> DrmHal::sendExpirationUpdate(const hidl_vec<uint8_t>& sessionId,
+        int64_t expiryTimeInMS) {
+
+    mEventLock.lock();
+    sp<IDrmClient> listener = mListener;
+    mEventLock.unlock();
+
+    if (listener != NULL) {
+        Parcel obj;
+        writeByteArray(obj, sessionId);
+        obj.writeInt64(expiryTimeInMS);
+
+        Mutex::Autolock lock(mNotifyLock);
+        listener->notify(DrmPlugin::kDrmPluginEventExpirationUpdate, 0, &obj);
+    }
+    return Void();
+}
+
+Return<void> DrmHal::sendKeysChange(const hidl_vec<uint8_t>& sessionId,
+        const hidl_vec<KeyStatus>& keyStatusList, bool hasNewUsableKey) {
+
+    mEventLock.lock();
+    sp<IDrmClient> listener = mListener;
+    mEventLock.unlock();
+
+    if (listener != NULL) {
+        Parcel obj;
+        writeByteArray(obj, sessionId);
+
+        size_t nKeys = keyStatusList.size();
+        obj.writeInt32(nKeys);
+        for (size_t i = 0; i < nKeys; ++i) {
+            const KeyStatus &keyStatus = keyStatusList[i];
+            writeByteArray(obj, keyStatus.keyId);
+            uint32_t type;
+            switch(keyStatus.type) {
+            case KeyStatusType::USABLE:
+                type = DrmPlugin::kKeyStatusType_Usable;
+                break;
+            case KeyStatusType::EXPIRED:
+                type = DrmPlugin::kKeyStatusType_Expired;
+                break;
+            case KeyStatusType::OUTPUTNOTALLOWED:
+                type = DrmPlugin::kKeyStatusType_OutputNotAllowed;
+                break;
+            case KeyStatusType::STATUSPENDING:
+                type = DrmPlugin::kKeyStatusType_StatusPending;
+                break;
+            case KeyStatusType::INTERNALERROR:
+            default:
+                type = DrmPlugin::kKeyStatusType_InternalError;
+                break;
+            }
+            obj.writeInt32(type);
+        }
+        obj.writeInt32(hasNewUsableKey);
+
+        Mutex::Autolock lock(mNotifyLock);
+        listener->notify(DrmPlugin::kDrmPluginEventKeysChange, 0, &obj);
+    }
+    return Void();
+}
+
+bool DrmHal::isCryptoSchemeSupported(const uint8_t uuid[16], const String8 &mimeType) {
+    Mutex::Autolock autoLock(mLock);
+    bool result = false;
+
+    if (mFactory != NULL && mFactory->isCryptoSchemeSupported(uuid)) {
+        if (mimeType != "") {
+            result = mFactory->isContentTypeSupported(mimeType.string());
+        }
+    }
+    return result;
+}
+
+status_t DrmHal::createPlugin(const uint8_t uuid[16],
+        const String8& appPackageName) {
+    Mutex::Autolock autoLock(mLock);
+
+    mPlugin = makeDrmPlugin(uuid, appPackageName);
+
+    if (mPlugin == NULL) {
+        mInitCheck = ERROR_UNSUPPORTED;
+    } else {
+        mInitCheck = OK;
+        mPlugin->setListener(this);
+    }
+
+    return mInitCheck;
+}
+
+status_t DrmHal::destroyPlugin() {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    setListener(NULL);
+    mPlugin.clear();
+
+    return OK;
+}
+
+status_t DrmHal::openSession(Vector<uint8_t> &sessionId) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t  err = UNKNOWN_ERROR;
+
+    bool retry = true;
+    do {
+        hidl_vec<uint8_t> hSessionId;
+
+        Return<void> hResult = mPlugin->openSession(
+                [&](Status status, const hidl_vec<uint8_t>& id) {
+                    if (status == Status::OK) {
+                        sessionId = toVector(id);
+                    }
+                    err = toStatusT(status);
+                }
+            );
+
+        if (!hResult.isOk()) {
+            err = DEAD_OBJECT;
+        }
+
+        if (err == ERROR_DRM_RESOURCE_BUSY && retry) {
+            mLock.unlock();
+            // reclaimSession may call back to closeSession, since mLock is
+            // shared between Drm instances, we should unlock here to avoid
+            // deadlock.
+            retry = DrmSessionManager::Instance()->reclaimSession(getCallingPid());
+            mLock.lock();
+        } else {
+            retry = false;
+        }
+    } while (retry);
+
+    if (err == OK) {
+        DrmSessionManager::Instance()->addSession(getCallingPid(),
+                mDrmSessionClient, sessionId);
+    }
+    return err;
+}
+
+status_t DrmHal::closeSession(Vector<uint8_t> const &sessionId) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    Status status = mPlugin->closeSession(toHidlVec(sessionId));
+    if (status == Status::OK) {
+        DrmSessionManager::Instance()->removeSession(sessionId);
+    }
+    return toStatusT(status);
+}
+
+status_t DrmHal::getKeyRequest(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &initData, String8 const &mimeType,
+        DrmPlugin::KeyType keyType, KeyedVector<String8,
+        String8> const &optionalParameters, Vector<uint8_t> &request,
+        String8 &defaultUrl, DrmPlugin::KeyRequestType *keyRequestType) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    KeyType hKeyType;
+    if (keyType == DrmPlugin::kKeyType_Streaming) {
+        hKeyType = KeyType::STREAMING;
+    } else if (keyType == DrmPlugin::kKeyType_Offline) {
+        hKeyType = KeyType::OFFLINE;
+    } else if (keyType == DrmPlugin::kKeyType_Release) {
+        hKeyType = KeyType::RELEASE;
+    } else {
+        return BAD_VALUE;
+    }
+
+    ::KeyedVector hOptionalParameters = toHidlKeyedVector(optionalParameters);
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->getKeyRequest(toHidlVec(sessionId),
+            toHidlVec(initData), toHidlString(mimeType), hKeyType, hOptionalParameters,
+            [&](Status status, const hidl_vec<uint8_t>& hRequest,
+                    KeyRequestType hKeyRequestType, const hidl_string& hDefaultUrl) {
+
+                if (status == Status::OK) {
+                    request = toVector(hRequest);
+                    defaultUrl = toString8(hDefaultUrl);
+
+                    switch (hKeyRequestType) {
+                    case KeyRequestType::INITIAL:
+                        *keyRequestType = DrmPlugin::kKeyRequestType_Initial;
+                        break;
+                    case KeyRequestType::RENEWAL:
+                        *keyRequestType = DrmPlugin::kKeyRequestType_Renewal;
+                        break;
+                    case KeyRequestType::RELEASE:
+                        *keyRequestType = DrmPlugin::kKeyRequestType_Release;
+                        break;
+                    default:
+                        *keyRequestType = DrmPlugin::kKeyRequestType_Unknown;
+                        break;
+                    }
+                    err = toStatusT(status);
+                }
+            });
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::provideKeyResponse(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &response, Vector<uint8_t> &keySetId) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->provideKeyResponse(toHidlVec(sessionId),
+            toHidlVec(response),
+            [&](Status status, const hidl_vec<uint8_t>& hKeySetId) {
+                if (status == Status::OK) {
+                    keySetId = toVector(hKeySetId);
+                }
+                err = toStatusT(status);
+            }
+        );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::removeKeys(Vector<uint8_t> const &keySetId) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    return toStatusT(mPlugin->removeKeys(toHidlVec(keySetId)));
+}
+
+status_t DrmHal::restoreKeys(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &keySetId) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    return toStatusT(mPlugin->restoreKeys(toHidlVec(sessionId),
+                    toHidlVec(keySetId)));
+}
+
+status_t DrmHal::queryKeyStatus(Vector<uint8_t> const &sessionId,
+        KeyedVector<String8, String8> &infoMap) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    ::KeyedVector hInfoMap;
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->queryKeyStatus(toHidlVec(sessionId),
+            [&](Status status, const hidl_vec<KeyValue>& map) {
+                if (status == Status::OK) {
+                    infoMap = toKeyedVector(map);
+                }
+                err = toStatusT(status);
+            }
+        );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::getProvisionRequest(String8 const &certType,
+        String8 const &certAuthority, Vector<uint8_t> &request,
+        String8 &defaultUrl) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->getProvisionRequest(
+            toHidlString(certType), toHidlString(certAuthority),
+            [&](Status status, const hidl_vec<uint8_t>& hRequest,
+                    const hidl_string& hDefaultUrl) {
+                if (status == Status::OK) {
+                    request = toVector(hRequest);
+                    defaultUrl = toString8(hDefaultUrl);
+                }
+                err = toStatusT(status);
+            }
+        );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::provideProvisionResponse(Vector<uint8_t> const &response,
+        Vector<uint8_t> &certificate, Vector<uint8_t> &wrappedKey) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->provideProvisionResponse(toHidlVec(response),
+            [&](Status status, const hidl_vec<uint8_t>& hCertificate,
+                    const hidl_vec<uint8_t>& hWrappedKey) {
+                if (status == Status::OK) {
+                    certificate = toVector(hCertificate);
+                    wrappedKey = toVector(hWrappedKey);
+                }
+                err = toStatusT(status);
+            }
+        );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::getSecureStops(List<Vector<uint8_t> > &secureStops) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->getSecureStops(
+            [&](Status status, const hidl_vec<SecureStop>& hSecureStops) {
+                if (status == Status::OK) {
+                    secureStops = toSecureStops(hSecureStops);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+
+status_t DrmHal::getSecureStop(Vector<uint8_t> const &ssid, Vector<uint8_t> &secureStop) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->getSecureStop(toHidlVec(ssid),
+            [&](Status status, const SecureStop& hSecureStop) {
+                if (status == Status::OK) {
+                    secureStop = toVector(hSecureStop.opaqueData);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::releaseSecureStops(Vector<uint8_t> const &ssRelease) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    return toStatusT(mPlugin->releaseSecureStop(toHidlVec(ssRelease)));
+}
+
+status_t DrmHal::releaseAllSecureStops() {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    return toStatusT(mPlugin->releaseAllSecureStops());
+}
+
+status_t DrmHal::getPropertyString(String8 const &name, String8 &value ) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->getPropertyString(toHidlString(name),
+            [&](Status status, const hidl_string& hValue) {
+                if (status == Status::OK) {
+                    value = toString8(hValue);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::getPropertyByteArray(String8 const &name, Vector<uint8_t> &value ) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->getPropertyByteArray(toHidlString(name),
+            [&](Status status, const hidl_vec<uint8_t>& hValue) {
+                if (status == Status::OK) {
+                    value = toVector(hValue);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::setPropertyString(String8 const &name, String8 const &value ) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    Status status =  mPlugin->setPropertyString(toHidlString(name),
+            toHidlString(value));
+    return toStatusT(status);
+}
+
+status_t DrmHal::setPropertyByteArray(String8 const &name,
+                                   Vector<uint8_t> const &value ) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    Status status = mPlugin->setPropertyByteArray(toHidlString(name),
+            toHidlVec(value));
+    return toStatusT(status);
+}
+
+
+status_t DrmHal::setCipherAlgorithm(Vector<uint8_t> const &sessionId,
+                                 String8 const &algorithm) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    Status status = mPlugin->setCipherAlgorithm(toHidlVec(sessionId),
+            toHidlString(algorithm));
+    return toStatusT(status);
+}
+
+status_t DrmHal::setMacAlgorithm(Vector<uint8_t> const &sessionId,
+                              String8 const &algorithm) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    Status status = mPlugin->setMacAlgorithm(toHidlVec(sessionId),
+            toHidlString(algorithm));
+    return toStatusT(status);
+}
+
+status_t DrmHal::encrypt(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &keyId, Vector<uint8_t> const &input,
+        Vector<uint8_t> const &iv, Vector<uint8_t> &output) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->encrypt(toHidlVec(sessionId),
+            toHidlVec(keyId), toHidlVec(input), toHidlVec(iv),
+            [&](Status status, const hidl_vec<uint8_t>& hOutput) {
+                if (status == Status::OK) {
+                    output = toVector(hOutput);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::decrypt(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &keyId, Vector<uint8_t> const &input,
+        Vector<uint8_t> const &iv, Vector<uint8_t> &output) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    status_t  err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->decrypt(toHidlVec(sessionId),
+            toHidlVec(keyId), toHidlVec(input), toHidlVec(iv),
+            [&](Status status, const hidl_vec<uint8_t>& hOutput) {
+                if (status == Status::OK) {
+                    output = toVector(hOutput);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::sign(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &keyId, Vector<uint8_t> const &message,
+        Vector<uint8_t> &signature) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->sign(toHidlVec(sessionId),
+            toHidlVec(keyId), toHidlVec(message),
+            [&](Status status, const hidl_vec<uint8_t>& hSignature)  {
+                if (status == Status::OK) {
+                    signature = toVector(hSignature);
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::verify(Vector<uint8_t> const &sessionId,
+        Vector<uint8_t> const &keyId, Vector<uint8_t> const &message,
+        Vector<uint8_t> const &signature, bool &match) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->verify(toHidlVec(sessionId),toHidlVec(keyId),
+            toHidlVec(message), toHidlVec(signature),
+            [&](Status status, bool hMatch) {
+                if (status == Status::OK) {
+                    match = hMatch;
+                } else {
+                    match = false;
+                }
+                err = toStatusT(status);
+            }
+    );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+status_t DrmHal::signRSA(Vector<uint8_t> const &sessionId,
+        String8 const &algorithm, Vector<uint8_t> const &message,
+        Vector<uint8_t> const &wrappedKey, Vector<uint8_t> &signature) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    if (!checkPermission("android.permission.ACCESS_DRM_CERTIFICATES")) {
+        return -EPERM;
+    }
+
+    DrmSessionManager::Instance()->useSession(sessionId);
+
+    status_t err = UNKNOWN_ERROR;
+
+    Return<void> hResult = mPlugin->signRSA(toHidlVec(sessionId),
+            toHidlString(algorithm), toHidlVec(message), toHidlVec(wrappedKey),
+            [&](Status status, const hidl_vec<uint8_t>& hSignature) {
+                if (status == Status::OK) {
+                    signature = toVector(hSignature);
+                }
+                err = toStatusT(status);
+            }
+        );
+
+    return hResult.isOk() ? err : DEAD_OBJECT;
+}
+
+void DrmHal::binderDied(const wp<IBinder> &the_late_who __unused)
+{
+    mEventLock.lock();
+    mListener.clear();
+    mEventLock.unlock();
+
+    Mutex::Autolock autoLock(mLock);
+    mPlugin.clear();
+}
+
+void DrmHal::writeByteArray(Parcel &obj, hidl_vec<uint8_t> const &vec)
+{
+    if (vec.size()) {
+        obj.writeInt32(vec.size());
+        obj.write(vec.data(), vec.size());
+    } else {
+        obj.writeInt32(0);
+    }
+}
+
+}  // namespace android
diff --git a/drm/libmediadrm/ICrypto.cpp b/drm/libmediadrm/ICrypto.cpp
index 8ba80c6..10e6bc3 100644
--- a/drm/libmediadrm/ICrypto.cpp
+++ b/drm/libmediadrm/ICrypto.cpp
@@ -94,18 +94,13 @@
         return reply.readInt32() != 0;
     }
 
-    virtual ssize_t decrypt(
-            DestinationType dstType,
-            const uint8_t key[16],
-            const uint8_t iv[16],
+    virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16],
             CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
-            const sp<IMemory> &sharedBuffer, size_t offset,
+            const sp<IMemory> &source, size_t offset,
             const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
-            void *dstPtr,
-            AString *errorDetailMsg) {
+            const DestinationBuffer &destination, AString *errorDetailMsg) {
         Parcel data, reply;
         data.writeInterfaceToken(ICrypto::getInterfaceDescriptor());
-        data.writeInt32((int32_t)dstType);
         data.writeInt32(mode);
         data.writeInt32(pattern.mEncryptBlocks);
         data.writeInt32(pattern.mSkipBlocks);
@@ -130,18 +125,23 @@
         }
 
         data.writeInt32(totalSize);
-        data.writeStrongBinder(IInterface::asBinder(sharedBuffer));
+        data.writeStrongBinder(IInterface::asBinder(source));
         data.writeInt32(offset);
 
         data.writeInt32(numSubSamples);
         data.write(subSamples, sizeof(CryptoPlugin::SubSample) * numSubSamples);
 
-        if (dstType == kDestinationTypeNativeHandle) {
-            data.writeNativeHandle(static_cast<native_handle_t *>(dstPtr));
-        } else if (dstType == kDestinationTypeOpaqueHandle) {
-            data.writeInt64(static_cast<uint64_t>(reinterpret_cast<uintptr_t>(dstPtr)));
+        data.writeInt32((int32_t)destination.mType);
+        if (destination.mType == kDestinationTypeNativeHandle) {
+            if (destination.mHandle == NULL) {
+                return BAD_VALUE;
+            }
+            data.writeNativeHandle(destination.mHandle);
         } else {
-            dstType = kDestinationTypeVmPointer;
+            if (destination.mSharedMemory == NULL) {
+                return BAD_VALUE;
+            }
+            data.writeStrongBinder(IInterface::asBinder(destination.mSharedMemory));
         }
 
         remote()->transact(DECRYPT, data, &reply);
@@ -150,10 +150,6 @@
 
         if (isCryptoError(result)) {
             errorDetailMsg->setTo(reply.readCString());
-        } 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;
@@ -280,7 +276,6 @@
         {
             CHECK_INTERFACE(ICrypto, data, reply);
 
-            DestinationType dstType = (DestinationType)data.readInt32();
             CryptoPlugin::Mode mode = (CryptoPlugin::Mode)data.readInt32();
             CryptoPlugin::Pattern pattern;
             pattern.mEncryptBlocks = data.readInt32();
@@ -293,9 +288,9 @@
             data.read(iv, sizeof(iv));
 
             size_t totalSize = data.readInt32();
-            sp<IMemory> sharedBuffer =
+            sp<IMemory> source =
                 interface_cast<IMemory>(data.readStrongBinder());
-            if (sharedBuffer == NULL) {
+            if (source == NULL) {
                 reply->writeInt32(BAD_VALUE);
                 return OK;
             }
@@ -308,23 +303,26 @@
             }
 
             CryptoPlugin::SubSample *subSamples =
-                new CryptoPlugin::SubSample[numSubSamples];
+                    new CryptoPlugin::SubSample[numSubSamples];
 
-            data.read(
-                    subSamples,
+            data.read(subSamples,
                     sizeof(CryptoPlugin::SubSample) * numSubSamples);
 
-            native_handle_t *nativeHandle = NULL;
-            void *secureBufferId = NULL, *dstPtr;
-            if (dstType == kDestinationTypeNativeHandle) {
-                nativeHandle = data.readNativeHandle();
-                dstPtr = static_cast<void *>(nativeHandle);
-            } else if (dstType == kDestinationTypeOpaqueHandle) {
-                secureBufferId = reinterpret_cast<void *>(static_cast<uintptr_t>(data.readInt64()));
-                dstPtr = secureBufferId;
-            } else {
-                dstType = kDestinationTypeVmPointer;
-                dstPtr = malloc(totalSize);
+            DestinationBuffer destination;
+            destination.mType = (DestinationType)data.readInt32();
+            if (destination.mType == kDestinationTypeNativeHandle) {
+                destination.mHandle = data.readNativeHandle();
+                if (destination.mHandle == NULL) {
+                    reply->writeInt32(BAD_VALUE);
+                    return OK;
+                }
+            } else if (destination.mType == kDestinationTypeSharedMemory) {
+                destination.mSharedMemory =
+                        interface_cast<IMemory>(data.readStrongBinder());
+                if (destination.mSharedMemory == NULL) {
+                    reply->writeInt32(BAD_VALUE);
+                    return OK;
+                }
             }
 
             AString errorDetailMsg;
@@ -348,20 +346,13 @@
 
             if (overflow || sumSubsampleSizes != totalSize) {
                 result = -EINVAL;
-            } else if (totalSize > sharedBuffer->size()) {
+            } else if (totalSize > source->size()) {
                 result = -EINVAL;
-            } else if ((size_t)offset > sharedBuffer->size() - totalSize) {
+            } else if ((size_t)offset > source->size() - totalSize) {
                 result = -EINVAL;
             } else {
-                result = decrypt(
-                    dstType,
-                    key,
-                    iv,
-                    mode, pattern,
-                    sharedBuffer, offset,
-                    subSamples, numSubSamples,
-                    dstPtr,
-                    &errorDetailMsg);
+                result = decrypt(key, iv, mode, pattern, source, offset,
+                        subSamples, numSubSamples, destination, &errorDetailMsg);
             }
 
             reply->writeInt32(result);
@@ -370,23 +361,12 @@
                 reply->writeCString(errorDetailMsg.c_str());
             }
 
-            if (dstType == kDestinationTypeVmPointer) {
-                if (result >= 0) {
-                    CHECK_LE(result, static_cast<ssize_t>(totalSize));
-                    // 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;
-            } else if (dstType == kDestinationTypeNativeHandle) {
+            if (destination.mType == kDestinationTypeNativeHandle) {
                 int err;
-                if ((err = native_handle_close(nativeHandle)) < 0) {
+                if ((err = native_handle_close(destination.mHandle)) < 0) {
                     ALOGW("secure buffer native_handle_close failed: %d", err);
                 }
-                if ((err = native_handle_delete(nativeHandle)) < 0) {
+                if ((err = native_handle_delete(destination.mHandle)) < 0) {
                     ALOGW("secure buffer native_handle_delete failed: %d", err);
                 }
             }
diff --git a/drm/libmediadrm/IDrm.cpp b/drm/libmediadrm/IDrm.cpp
index c4558c6..4e47112 100644
--- a/drm/libmediadrm/IDrm.cpp
+++ b/drm/libmediadrm/IDrm.cpp
@@ -88,13 +88,15 @@
         return reply.readInt32() != 0;
     }
 
-    virtual status_t createPlugin(const uint8_t uuid[16]) {
+    virtual status_t createPlugin(const uint8_t uuid[16],
+                                  const String8& appPackageName) {
         Parcel data, reply;
         data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
         data.write(uuid, 16);
-
+        data.writeString8(appPackageName);
         status_t status = remote()->transact(CREATE_PLUGIN, data, &reply);
         if (status != OK) {
+            ALOGE("createPlugin: binder call failed: %d", status);
             return status;
         }
 
@@ -585,7 +587,6 @@
             data.read(uuid, sizeof(uuid));
             String8 mimeType = data.readString8();
             reply->writeInt32(isCryptoSchemeSupported(uuid, mimeType));
-
             return OK;
         }
 
@@ -594,7 +595,8 @@
             CHECK_INTERFACE(IDrm, data, reply);
             uint8_t uuid[16];
             data.read(uuid, sizeof(uuid));
-            reply->writeInt32(createPlugin(uuid));
+            String8 appPackageName = data.readString8();
+            reply->writeInt32(createPlugin(uuid, appPackageName));
             return OK;
         }
 
diff --git a/drm/mediadrm/plugins/clearkey/DrmFactory.cpp b/drm/mediadrm/plugins/clearkey/DrmFactory.cpp
index d27956c..c83321b 100644
--- a/drm/mediadrm/plugins/clearkey/DrmFactory.cpp
+++ b/drm/mediadrm/plugins/clearkey/DrmFactory.cpp
@@ -44,7 +44,8 @@
 }
 
 android::status_t DrmFactory::createDrmPlugin(
-        const uint8_t uuid[16], android::DrmPlugin** plugin) {
+        const uint8_t uuid[16],
+        android::DrmPlugin** plugin) {
     if (!isCryptoSchemeSupported(uuid)) {
         *plugin = NULL;
         return android::BAD_VALUE;
diff --git a/drm/mediadrm/plugins/clearkey/DrmFactory.h b/drm/mediadrm/plugins/clearkey/DrmFactory.h
index 87db982..0bc0843 100644
--- a/drm/mediadrm/plugins/clearkey/DrmFactory.h
+++ b/drm/mediadrm/plugins/clearkey/DrmFactory.h
@@ -35,7 +35,8 @@
     virtual bool isContentTypeSupported(const android::String8 &mimeType);
 
     virtual android::status_t createDrmPlugin(
-            const uint8_t uuid[16], android::DrmPlugin** plugin);
+            const uint8_t uuid[16],
+            android::DrmPlugin** plugin);
 
 private:
     DISALLOW_EVIL_CONSTRUCTORS(DrmFactory);
diff --git a/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.cpp b/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.cpp
index a38cca9..c82b9d9 100644
--- a/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.cpp
+++ b/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.cpp
@@ -56,7 +56,8 @@
         return true;
     }
 
-    status_t MockDrmFactory::createDrmPlugin(const uint8_t /* uuid */[16], DrmPlugin **plugin)
+    status_t MockDrmFactory::createDrmPlugin(const uint8_t /* uuid */[16],
+                                             DrmPlugin **plugin)
     {
         *plugin = new MockDrmPlugin();
         return OK;
@@ -729,7 +730,7 @@
 
     ssize_t MockDrmPlugin::findSession(Vector<uint8_t> const &sessionId) const
     {
-        ALOGD("findSession: nsessions=%d, size=%d", mSessions.size(), sessionId.size());
+        ALOGD("findSession: nsessions=%u, size=%u", mSessions.size(), sessionId.size());
         for (size_t i = 0; i < mSessions.size(); ++i) {
             if (memcmp(mSessions[i].array(), sessionId.array(), sessionId.size()) == 0) {
                 return i;
@@ -740,7 +741,7 @@
 
     ssize_t MockDrmPlugin::findKeySet(Vector<uint8_t> const &keySetId) const
     {
-        ALOGD("findKeySet: nkeySets=%d, size=%d", mKeySets.size(), keySetId.size());
+        ALOGD("findKeySet: nkeySets=%u, size=%u", mKeySets.size(), keySetId.size());
         for (size_t i = 0; i < mKeySets.size(); ++i) {
             if (memcmp(mKeySets[i].array(), keySetId.array(), keySetId.size()) == 0) {
                 return i;
diff --git a/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.h b/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.h
index 98bdd69..9f8db17 100644
--- a/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.h
+++ b/drm/mediadrm/plugins/mock/MockDrmCryptoPlugin.h
@@ -33,7 +33,8 @@
 
         bool isCryptoSchemeSupported(const uint8_t uuid[16]);
         bool isContentTypeSupported(const String8 &mimeType);
-        status_t createDrmPlugin(const uint8_t uuid[16], DrmPlugin **plugin);
+        status_t createDrmPlugin(const uint8_t uuid[16],
+                                 DrmPlugin **plugin);
     };
 
     class MockCryptoFactory : public CryptoFactory {
diff --git a/include/camera/ndk/NdkCameraMetadataTags.h b/include/camera/ndk/NdkCameraMetadataTags.h
index 0fec983..ced6034 100644
--- a/include/camera/ndk/NdkCameraMetadataTags.h
+++ b/include/camera/ndk/NdkCameraMetadataTags.h
@@ -1515,6 +1515,40 @@
      */
     ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST =                // int32
             ACAMERA_CONTROL_START + 40,
+    /**
+     * <p>Allow camera device to enable zero-shutter-lag mode for requests with
+     * ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     *
+     * <p>This tag may appear in:</p>
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul>
+     *
+     * <p>If enableZsl is <code>true</code>, the camera device may enable zero-shutter-lag mode for requests with
+     * STILL_CAPTURE capture intent. The camera device may use images captured in the past to
+     * produce output images for a zero-shutter-lag request. The result metadata including the
+     * ACAMERA_SENSOR_TIMESTAMP reflects the source frames used to produce output images.
+     * Therefore, the contents of the output images and the result metadata may be out of order
+     * compared to previous regular requests. enableZsl does not affect requests with other
+     * capture intents.</p>
+     * <p>For example, when requests are submitted in the following order:
+     *   Request A: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is PREVIEW
+     *   Request B: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is STILL_CAPTURE</p>
+     * <p>The output images for request B may have contents captured before the output images for
+     * request A, and the result metadata for request B may be older than the result metadata for
+     * request A.</p>
+     * <p>Note that when enableZsl is <code>true</code>, it is not guaranteed to get output images captured in the
+     * past for requests with STILL_CAPTURE capture intent.</p>
+     * <p>The value of enableZsl in capture templates is always <code>false</code> if present.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     * @see ACAMERA_SENSOR_TIMESTAMP
+     */
+    ACAMERA_CONTROL_ENABLE_ZSL =                                // byte (enum)
+            ACAMERA_CONTROL_START + 41,
     ACAMERA_CONTROL_END,
 
     /**
@@ -5762,6 +5796,26 @@
 
 } acamera_metadata_enum_android_control_awb_lock_available_t;
 
+// ACAMERA_CONTROL_ENABLE_ZSL
+typedef enum acamera_metadata_enum_acamera_control_enable_zsl {
+    /**
+     * <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE must be captured
+     * after previous requests.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_ENABLE_ZSL_FALSE                                 = 0,
+
+    /**
+     * <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE may or may not be
+     * captured before previous requests.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_ENABLE_ZSL_TRUE                                  = 1,
+
+} acamera_metadata_enum_android_control_enable_zsl_t;
+
 
 
 // ACAMERA_EDGE_MODE
diff --git a/include/media/Crypto.h b/include/media/Crypto.h
index 7d181d3..ce08f98 100644
--- a/include/media/Crypto.h
+++ b/include/media/Crypto.h
@@ -49,16 +49,11 @@
 
     virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId);
 
-    virtual ssize_t decrypt(
-            DestinationType dstType,
-            const uint8_t key[16],
-            const uint8_t iv[16],
-            CryptoPlugin::Mode mode,
-            const CryptoPlugin::Pattern &pattern,
-            const sp<IMemory> &sharedBuffer, size_t offset,
+    virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16],
+            CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
+            const sp<IMemory> &source, size_t offset,
             const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
-            void *dstPtr,
-            AString *errorDetailMsg);
+            const DestinationBuffer &destination, AString *errorDetailMsg);
 
 private:
     mutable Mutex mLock;
diff --git a/include/media/CryptoHal.h b/include/media/CryptoHal.h
new file mode 100644
index 0000000..1ace957
--- /dev/null
+++ b/include/media/CryptoHal.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2017 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 CRYPTO_HAL_H_
+
+#define CRYPTO_HAL_H_
+
+#include <android/hardware/drm/1.0/ICryptoFactory.h>
+#include <android/hardware/drm/1.0/ICryptoPlugin.h>
+#include <media/ICrypto.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+
+#include "SharedLibrary.h"
+
+namespace android {
+
+struct CryptoHal : public BnCrypto {
+    CryptoHal();
+    virtual ~CryptoHal();
+
+    virtual status_t initCheck() const;
+
+    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
+
+    virtual status_t createPlugin(
+            const uint8_t uuid[16], const void *data, size_t size);
+
+    virtual status_t destroyPlugin();
+
+    virtual bool requiresSecureDecoderComponent(
+            const char *mime) const;
+
+    virtual void notifyResolution(uint32_t width, uint32_t height);
+
+    virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId);
+
+    virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16],
+            CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
+            const sp<IMemory> &source, size_t offset,
+            const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
+            const ICrypto::DestinationBuffer &destination,
+            AString *errorDetailMsg);
+
+private:
+    mutable Mutex mLock;
+
+    sp<SharedLibrary> mLibrary;
+    sp<::android::hardware::drm::V1_0::ICryptoFactory> mFactory;
+    sp<::android::hardware::drm::V1_0::ICryptoPlugin> mPlugin;
+
+    /**
+     * mInitCheck is:
+     *   NO_INIT if a plugin hasn't been created yet
+     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
+     *   OK after a plugin has been created and mPlugin is valid
+     */
+    status_t mInitCheck;
+
+    void *mHeapBase;
+
+    sp<::android::hardware::drm::V1_0::ICryptoFactory>
+            makeCryptoFactory();
+    sp<::android::hardware::drm::V1_0::ICryptoPlugin>
+            makeCryptoPlugin(const uint8_t uuid[16], const void *initData,
+                size_t size);
+
+    status_t setHeapBase(const sp<IMemory> &sharedBuffer);
+
+    DISALLOW_EVIL_CONSTRUCTORS(CryptoHal);
+};
+
+}  // namespace android
+
+#endif  // CRYPTO_HAL_H_
diff --git a/include/media/Drm.h b/include/media/Drm.h
index d40019b..fc869cc 100644
--- a/include/media/Drm.h
+++ b/include/media/Drm.h
@@ -40,7 +40,7 @@
 
     virtual bool isCryptoSchemeSupported(const uint8_t uuid[16], const String8 &mimeType);
 
-    virtual status_t createPlugin(const uint8_t uuid[16]);
+    virtual status_t createPlugin(const uint8_t uuid[16], const String8 &appPackageName);
 
     virtual status_t destroyPlugin();
 
diff --git a/include/media/DrmHal.h b/include/media/DrmHal.h
new file mode 100644
index 0000000..82d2555
--- /dev/null
+++ b/include/media/DrmHal.h
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2017 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 DRM_HAL_H_
+
+#define DRM_HAL_H_
+
+#include <android/hardware/drm/1.0/IDrmPlugin.h>
+#include <android/hardware/drm/1.0/IDrmPluginListener.h>
+#include <android/hardware/drm/1.0/IDrmFactory.h>
+
+#include <media/IDrm.h>
+#include <media/IDrmClient.h>
+#include <utils/threads.h>
+
+using ::android::hardware::drm::V1_0::EventType;
+using ::android::hardware::drm::V1_0::IDrmFactory;
+using ::android::hardware::drm::V1_0::IDrmPlugin;
+using ::android::hardware::drm::V1_0::IDrmPluginListener;
+using ::android::hardware::drm::V1_0::KeyStatus;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+namespace android {
+
+struct DrmSessionClientInterface;
+
+struct DrmHal : public BnDrm,
+             public IBinder::DeathRecipient,
+             public IDrmPluginListener {
+    DrmHal();
+    virtual ~DrmHal();
+
+    virtual status_t initCheck() const;
+
+    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16], const String8 &mimeType);
+
+    virtual status_t createPlugin(const uint8_t uuid[16],
+                                  const String8 &appPackageName);
+
+    virtual status_t destroyPlugin();
+
+    virtual status_t openSession(Vector<uint8_t> &sessionId);
+
+    virtual status_t closeSession(Vector<uint8_t> const &sessionId);
+
+    virtual status_t
+        getKeyRequest(Vector<uint8_t> const &sessionId,
+                      Vector<uint8_t> const &initData,
+                      String8 const &mimeType, DrmPlugin::KeyType keyType,
+                      KeyedVector<String8, String8> const &optionalParameters,
+                      Vector<uint8_t> &request, String8 &defaultUrl,
+                      DrmPlugin::KeyRequestType *keyRequestType);
+
+    virtual status_t provideKeyResponse(Vector<uint8_t> const &sessionId,
+                                        Vector<uint8_t> const &response,
+                                        Vector<uint8_t> &keySetId);
+
+    virtual status_t removeKeys(Vector<uint8_t> const &keySetId);
+
+    virtual status_t restoreKeys(Vector<uint8_t> const &sessionId,
+                                 Vector<uint8_t> const &keySetId);
+
+    virtual status_t queryKeyStatus(Vector<uint8_t> const &sessionId,
+                                    KeyedVector<String8, String8> &infoMap) const;
+
+    virtual status_t getProvisionRequest(String8 const &certType,
+                                         String8 const &certAuthority,
+                                         Vector<uint8_t> &request,
+                                         String8 &defaulUrl);
+
+    virtual status_t provideProvisionResponse(Vector<uint8_t> const &response,
+                                              Vector<uint8_t> &certificate,
+                                              Vector<uint8_t> &wrappedKey);
+
+    virtual status_t getSecureStops(List<Vector<uint8_t> > &secureStops);
+    virtual status_t getSecureStop(Vector<uint8_t> const &ssid, Vector<uint8_t> &secureStop);
+
+    virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease);
+    virtual status_t releaseAllSecureStops();
+
+    virtual status_t getPropertyString(String8 const &name, String8 &value ) const;
+    virtual status_t getPropertyByteArray(String8 const &name,
+                                          Vector<uint8_t> &value ) const;
+    virtual status_t setPropertyString(String8 const &name, String8 const &value ) const;
+    virtual status_t setPropertyByteArray(String8 const &name,
+                                          Vector<uint8_t> const &value ) const;
+
+    virtual status_t setCipherAlgorithm(Vector<uint8_t> const &sessionId,
+                                        String8 const &algorithm);
+
+    virtual status_t setMacAlgorithm(Vector<uint8_t> const &sessionId,
+                                     String8 const &algorithm);
+
+    virtual status_t encrypt(Vector<uint8_t> const &sessionId,
+                             Vector<uint8_t> const &keyId,
+                             Vector<uint8_t> const &input,
+                             Vector<uint8_t> const &iv,
+                             Vector<uint8_t> &output);
+
+    virtual status_t decrypt(Vector<uint8_t> const &sessionId,
+                             Vector<uint8_t> const &keyId,
+                             Vector<uint8_t> const &input,
+                             Vector<uint8_t> const &iv,
+                             Vector<uint8_t> &output);
+
+    virtual status_t sign(Vector<uint8_t> const &sessionId,
+                          Vector<uint8_t> const &keyId,
+                          Vector<uint8_t> const &message,
+                          Vector<uint8_t> &signature);
+
+    virtual status_t verify(Vector<uint8_t> const &sessionId,
+                            Vector<uint8_t> const &keyId,
+                            Vector<uint8_t> const &message,
+                            Vector<uint8_t> const &signature,
+                            bool &match);
+
+    virtual status_t signRSA(Vector<uint8_t> const &sessionId,
+                             String8 const &algorithm,
+                             Vector<uint8_t> const &message,
+                             Vector<uint8_t> const &wrappedKey,
+                             Vector<uint8_t> &signature);
+
+    virtual status_t setListener(const sp<IDrmClient>& listener);
+
+    // Methods of IDrmPluginListener
+    Return<void> sendEvent(EventType eventType,
+            const hidl_vec<uint8_t>& sessionId, const hidl_vec<uint8_t>& data);
+
+    Return<void> sendExpirationUpdate(const hidl_vec<uint8_t>& sessionId,
+            int64_t expiryTimeInMS);
+
+    Return<void> sendKeysChange(const hidl_vec<uint8_t>& sessionId,
+            const hidl_vec<KeyStatus>& keyStatusList, bool hasNewUsableKey);
+
+    virtual void binderDied(const wp<IBinder> &the_late_who);
+
+private:
+    static Mutex mLock;
+
+    sp<DrmSessionClientInterface> mDrmSessionClient;
+
+    sp<IDrmClient> mListener;
+    mutable Mutex mEventLock;
+    mutable Mutex mNotifyLock;
+
+    sp<IDrmFactory> mFactory;
+    sp<IDrmPlugin> mPlugin;
+
+    /**
+     * mInitCheck is:
+     *   NO_INIT if a plugin hasn't been created yet
+     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
+     *   OK after a plugin has been created and mPlugin is valid
+     */
+    status_t mInitCheck;
+
+    sp<IDrmFactory> makeDrmFactory();
+    sp<IDrmPlugin> makeDrmPlugin(const uint8_t uuid[16],
+                                 const String8 &appPackageName);
+
+    void writeByteArray(Parcel &obj, const hidl_vec<uint8_t>& array);
+
+    DISALLOW_EVIL_CONSTRUCTORS(DrmHal);
+};
+
+}  // namespace android
+
+#endif  // DRM_HAL_H_
diff --git a/include/media/ICrypto.h b/include/media/ICrypto.h
index a4bfaf8..8990f4b 100644
--- a/include/media/ICrypto.h
+++ b/include/media/ICrypto.h
@@ -15,8 +15,9 @@
  */
 
 #include <binder/IInterface.h>
-#include <media/stagefright/foundation/ABase.h>
+#include <cutils/native_handle.h>
 #include <media/hardware/CryptoAPI.h>
+#include <media/stagefright/foundation/ABase.h>
 
 #ifndef ANDROID_ICRYPTO_H_
 
@@ -47,21 +48,21 @@
     virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId) = 0;
 
     enum DestinationType {
-        kDestinationTypeVmPointer,    // non-secure
-        kDestinationTypeOpaqueHandle, // secure
+        kDestinationTypeSharedMemory, // non-secure
         kDestinationTypeNativeHandle  // secure
     };
 
-    virtual ssize_t decrypt(
-            DestinationType dstType,
-            const uint8_t key[16],
-            const uint8_t iv[16],
-            CryptoPlugin::Mode mode,
-            const CryptoPlugin::Pattern &pattern,
-            const sp<IMemory> &sharedBuffer, size_t offset,
+    struct DestinationBuffer {
+        DestinationType mType;
+        native_handle_t *mHandle;
+        sp<IMemory> mSharedMemory;
+    };
+
+    virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16],
+            CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
+            const sp<IMemory> &source, size_t offset,
             const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
-            void *dstPtr,
-            AString *errorDetailMsg) = 0;
+            const DestinationBuffer &destination, AString *errorDetailMsg) = 0;
 
 private:
     DISALLOW_EVIL_CONSTRUCTORS(ICrypto);
diff --git a/include/media/IDrm.h b/include/media/IDrm.h
index fd51fd0..a57e372 100644
--- a/include/media/IDrm.h
+++ b/include/media/IDrm.h
@@ -34,7 +34,8 @@
 
     virtual bool isCryptoSchemeSupported(const uint8_t uuid[16], const String8 &mimeType) = 0;
 
-    virtual status_t createPlugin(const uint8_t uuid[16]) = 0;
+    virtual status_t createPlugin(const uint8_t uuid[16],
+                                  const String8 &appPackageName) = 0;
 
     virtual status_t destroyPlugin() = 0;
 
diff --git a/include/media/IMediaPlayer.h b/include/media/IMediaPlayer.h
index f642373..ca865a8 100644
--- a/include/media/IMediaPlayer.h
+++ b/include/media/IMediaPlayer.h
@@ -24,6 +24,7 @@
 #include <system/audio.h>
 
 #include <media/IMediaSource.h>
+#include <media/drm/DrmAPI.h>   // for DrmPlugin::* enum
 
 // Fwd decl to make sure everyone agrees that the scope of struct sockaddr_in is
 // global, and not in android::
@@ -89,6 +90,22 @@
     virtual status_t        setRetransmitEndpoint(const struct sockaddr_in* endpoint) = 0;
     virtual status_t        getRetransmitEndpoint(struct sockaddr_in* endpoint) = 0;
     virtual status_t        setNextPlayer(const sp<IMediaPlayer>& next) = 0;
+    // ModDrm
+    virtual status_t        prepareDrm(const uint8_t uuid[16], const int mode) = 0;
+    virtual status_t        releaseDrm() = 0;
+    virtual status_t        getKeyRequest(Vector<uint8_t> const& scope,
+                                    String8 const &mimeType,
+                                    DrmPlugin::KeyType keyType,
+                                    KeyedVector<String8, String8>& optionalParameters,
+                                    Vector<uint8_t>& request,
+                                    String8& defaultUrl,
+                                    DrmPlugin::KeyRequestType& keyRequestType) = 0;
+    virtual status_t        provideKeyResponse(Vector<uint8_t>& releaseKeySetId,
+                                    Vector<uint8_t>& response,
+                                    Vector<uint8_t>& keySetId) = 0;
+    virtual status_t        restoreKeys(Vector<uint8_t> const& keySetId) = 0;
+    virtual status_t        getDrmPropertyString(String8 const& name, String8& value) = 0;
+    virtual status_t        setDrmPropertyString(String8 const& name, String8 const& value) = 0;
 
     // Invoke a generic method on the player by using opaque parcels
     // for the request and reply.
diff --git a/include/media/MediaAnalyticsItem.h b/include/media/MediaAnalyticsItem.h
index a78aa8b..f050e7f 100644
--- a/include/media/MediaAnalyticsItem.h
+++ b/include/media/MediaAnalyticsItem.h
@@ -40,6 +40,7 @@
 
     friend class MediaAnalyticsService;
     friend class IMediaAnalyticsService;
+    friend class MediaMetricsJNI;
 
     public:
 
diff --git a/include/media/MediaPlayerInterface.h b/include/media/MediaPlayerInterface.h
index 0e815cb..4e18f1f 100644
--- a/include/media/MediaPlayerInterface.h
+++ b/include/media/MediaPlayerInterface.h
@@ -280,6 +280,34 @@
         return INVALID_OPERATION;
     }
 
+    // ModDrm
+    virtual status_t prepareDrm(const uint8_t uuid[16], const int mode) {
+        return INVALID_OPERATION;
+    }
+    virtual status_t releaseDrm() {
+        return INVALID_OPERATION;
+    }
+    virtual status_t getKeyRequest(Vector<uint8_t> const& scope, String8 const& mimeType,
+                             DrmPlugin::KeyType keyType,
+                             KeyedVector<String8, String8>& optionalParameters,
+                             Vector<uint8_t>& request, String8& defaultUrl,
+                             DrmPlugin::KeyRequestType& keyRequestType) {
+        return INVALID_OPERATION;
+    }
+    virtual status_t provideKeyResponse(Vector<uint8_t>& releaseKeySetId,
+                             Vector<uint8_t>& response, Vector<uint8_t>& keySetId) {
+        return INVALID_OPERATION;
+    }
+    virtual status_t restoreKeys(Vector<uint8_t> const& keySetId) {
+        return INVALID_OPERATION;
+    }
+    virtual status_t getDrmPropertyString(String8 const& name, String8& value) {
+        return INVALID_OPERATION;
+    }
+    virtual status_t setDrmPropertyString(String8 const& name, String8 const& value) {
+        return INVALID_OPERATION;
+    }
+
 private:
     friend class MediaPlayerService;
 
diff --git a/include/media/OMXBuffer.h b/include/media/OMXBuffer.h
index 697823f..6f79182 100644
--- a/include/media/OMXBuffer.h
+++ b/include/media/OMXBuffer.h
@@ -21,6 +21,7 @@
 #include <media/IOMX.h>
 #include <system/window.h>
 #include <utils/StrongPointer.h>
+#include <hidl/HidlSupport.h>
 
 namespace android {
 
@@ -35,13 +36,21 @@
             ::android::OMXBuffer const& l);
     inline bool convertTo(::android::OMXBuffer* l,
             ::android::hardware::media::omx::V1_0::CodecBuffer const& t);
-}}}}}
+}
+namespace utils {
+    inline bool wrapAs(::android::hardware::media::omx::V1_0::CodecBuffer* t,
+            ::android::OMXBuffer const& l);
+    inline bool convertTo(::android::OMXBuffer* l,
+            ::android::hardware::media::omx::V1_0::CodecBuffer const& t);
+}
+}}}}
 
 class GraphicBuffer;
 class IMemory;
 class MediaCodecBuffer;
 class NativeHandle;
 struct OMXNodeInstance;
+using hardware::hidl_memory;
 
 // TODO: After complete HIDL transition, this class would be replaced by
 // CodecBuffer.
@@ -54,10 +63,15 @@
     // Default constructor, constructs a buffer of type kBufferTypeInvalid.
     OMXBuffer();
 
-    // Constructs a buffer of type kBufferTypePreset with mRangeLength set to
-    // |codecBuffer|'s size (or 0 if |codecBuffer| is NULL).
+    // Constructs a buffer of type kBufferTypePreset with mRangeOffset set to
+    // |codecBuffer|'s offset and mRangeLength set to |codecBuffer|'s size (or 0
+    // if |codecBuffer| is NULL).
     OMXBuffer(const sp<MediaCodecBuffer> &codecBuffer);
 
+    // Constructs a buffer of type kBufferTypePreset with specified mRangeOffset
+    // and mRangeLength.
+    OMXBuffer(OMX_U32 rangeOffset, OMX_U32 rangeLength);
+
     // Constructs a buffer of type kBufferTypeSharedMem.
     OMXBuffer(const sp<IMemory> &mem);
 
@@ -67,6 +81,9 @@
     // Constructs a buffer of type kBufferTypeNativeHandle.
     OMXBuffer(const sp<NativeHandle> &handle);
 
+    // Constructs a buffer of type kBufferTypeHidlMemory.
+    OMXBuffer(const hidl_memory &hidlMemory);
+
     // Parcelling/Un-parcelling.
     status_t writeToParcel(Parcel *parcel) const;
     status_t readFromParcel(const Parcel *parcel);
@@ -83,13 +100,20 @@
     friend inline bool (::android::hardware::media::omx::V1_0::implementation::
             convertTo)(OMXBuffer* l,
             ::android::hardware::media::omx::V1_0::CodecBuffer const& t);
+    friend inline bool (::android::hardware::media::omx::V1_0::utils::
+            wrapAs)(::android::hardware::media::omx::V1_0::CodecBuffer* t,
+            OMXBuffer const& l);
+    friend inline bool (::android::hardware::media::omx::V1_0::utils::
+            convertTo)(OMXBuffer* l,
+            ::android::hardware::media::omx::V1_0::CodecBuffer const& t);
 
     enum BufferType {
         kBufferTypeInvalid = 0,
         kBufferTypePreset,
         kBufferTypeSharedMem,
-        kBufferTypeANWBuffer,
+        kBufferTypeANWBuffer, // Use only for non-Treble
         kBufferTypeNativeHandle,
+        kBufferTypeHidlMemory // Mapped to CodecBuffer::Type::SHARED_MEM.
     };
 
     BufferType mBufferType;
@@ -109,6 +133,9 @@
     // kBufferTypeNativeHandle
     sp<NativeHandle> mNativeHandle;
 
+    // kBufferTypeHidlMemory
+    hidl_memory mHidlMemory;
+
     // Move assignment
     OMXBuffer &operator=(OMXBuffer&&);
 
diff --git a/include/media/OMXFenceParcelable.h b/include/media/OMXFenceParcelable.h
index f529301..2a8da87 100644
--- a/include/media/OMXFenceParcelable.h
+++ b/include/media/OMXFenceParcelable.h
@@ -26,12 +26,20 @@
 // This is needed temporarily for the OMX HIDL transition.
 namespace hardware {
     struct hidl_handle;
-namespace media { namespace omx { namespace V1_0 { namespace implementation {
+namespace media { namespace omx { namespace V1_0 {
+namespace implementation {
     void wrapAs(::android::OMXFenceParcelable* l,
             ::android::hardware::hidl_handle const& t);
     bool convertTo(::android::OMXFenceParcelable* l,
             ::android::hardware::hidl_handle const& t);
-}}}}}
+}
+namespace utils {
+    void wrapAs(::android::OMXFenceParcelable* l,
+            ::android::hardware::hidl_handle const& t);
+    bool convertTo(::android::OMXFenceParcelable* l,
+            ::android::hardware::hidl_handle const& t);
+}
+}}}}
 
 struct OMXFenceParcelable : public Parcelable {
     OMXFenceParcelable() : mFenceFd(-1) {}
@@ -56,6 +64,12 @@
     friend bool (::android::hardware::media::omx::V1_0::implementation::
             convertTo)(OMXFenceParcelable* l,
             ::android::hardware::hidl_handle const& t);
+    friend void (::android::hardware::media::omx::V1_0::utils::
+            wrapAs)(OMXFenceParcelable* l,
+            ::android::hardware::hidl_handle const& t);
+    friend bool (::android::hardware::media::omx::V1_0::utils::
+            convertTo)(OMXFenceParcelable* l,
+            ::android::hardware::hidl_handle const& t);
 };
 
 inline status_t OMXFenceParcelable::readFromParcel(const Parcel* parcel) {
diff --git a/include/media/PluginLoader.h b/include/media/PluginLoader.h
index 360af2d..a626e16 100644
--- a/include/media/PluginLoader.h
+++ b/include/media/PluginLoader.h
@@ -60,7 +60,10 @@
         }
     }
 
-    T *getFactory(size_t i) const {return factories[i];}
+    T *getFactory(size_t i) const {
+        return factories[i];
+    }
+
     size_t factoryCount() const {return factories.size();}
 
   private:
@@ -74,12 +77,11 @@
             CreateFactoryFunc createFactoryFunc =
                     (CreateFactoryFunc)library->lookup(entry);
             if (createFactoryFunc) {
+                ALOGV("Found plugin factory entry %s in %s", entry, path);
                 libraries.push(library);
-                return createFactoryFunc();
-            } else {
-                ALOGE("Failed to create plugin factory from %s at entry %s: %s",
-                        path, entry, library->lastError());
-            }
+                T* result = createFactoryFunc();
+                return  result;
+           }
         }
         return NULL;
     }
diff --git a/include/media/mediaplayer.h b/include/media/mediaplayer.h
index 5d7c25a..2c5ff1f 100644
--- a/include/media/mediaplayer.h
+++ b/include/media/mediaplayer.h
@@ -55,6 +55,7 @@
     MEDIA_INFO              = 200,
     MEDIA_SUBTITLE_DATA     = 201,
     MEDIA_META_DATA         = 202,
+    MEDIA_DRM_INFO          = 210,
 };
 
 // Generic error codes for the media player framework.  Errors are fatal, the
@@ -260,6 +261,19 @@
             status_t        getParameter(int key, Parcel* reply);
             status_t        setRetransmitEndpoint(const char* addrString, uint16_t port);
             status_t        setNextMediaPlayer(const sp<MediaPlayer>& player);
+            // ModDrm
+            status_t        prepareDrm(const uint8_t uuid[16], const int mode);
+            status_t        releaseDrm();
+            status_t        getKeyRequest(Vector<uint8_t> const& scope, String8 const& mimeType,
+                                    DrmPlugin::KeyType keyType,
+                                    KeyedVector<String8, String8>& optionalParameters,
+                                    Vector<uint8_t>& request, String8& defaultUrl,
+                                    DrmPlugin::KeyRequestType& keyRequestType);
+            status_t        provideKeyResponse(Vector<uint8_t>& releaseKeySetId,
+                                    Vector<uint8_t>& response, Vector<uint8_t>& keySetId);
+            status_t        restoreKeys(Vector<uint8_t> const& keySetId);
+            status_t        getDrmPropertyString(String8 const& name, String8& value);
+            status_t        setDrmPropertyString(String8 const& name, String8 const& value);
 
 private:
             void            clear_l();
diff --git a/include/media/stagefright/MediaCodec.h b/include/media/stagefright/MediaCodec.h
index 2e367bf..699ae48 100644
--- a/include/media/stagefright/MediaCodec.h
+++ b/include/media/stagefright/MediaCodec.h
@@ -25,6 +25,7 @@
 #include <media/hardware/CryptoAPI.h>
 #include <media/MediaCodecInfo.h>
 #include <media/MediaResource.h>
+#include <media/MediaAnalyticsItem.h>
 #include <media/stagefright/foundation/AHandler.h>
 #include <media/stagefright/FrameRenderTracker.h>
 #include <utils/Vector.h>
@@ -172,6 +173,8 @@
 
     status_t getName(AString *componentName) const;
 
+    status_t getMetrics(Parcel *reply);
+
     status_t setParameters(const sp<AMessage> &params);
 
     // Create a MediaCodec notification message from a list of rendered or dropped render infos
@@ -298,6 +301,8 @@
     sp<Surface> mSurface;
     SoftwareRenderer *mSoftRenderer;
 
+    MediaAnalyticsItem *mAnalyticsItem;
+
     sp<AMessage> mOutputFormat;
     sp<AMessage> mInputFormat;
     sp<AMessage> mCallback;
diff --git a/include/media/stagefright/MediaExtractor.h b/include/media/stagefright/MediaExtractor.h
index b460ef7..211f794 100644
--- a/include/media/stagefright/MediaExtractor.h
+++ b/include/media/stagefright/MediaExtractor.h
@@ -20,6 +20,7 @@
 
 #include <media/IMediaExtractor.h>
 #include <media/IMediaSource.h>
+#include <media/MediaAnalyticsItem.h>
 
 namespace android {
 
@@ -69,7 +70,9 @@
 
 protected:
     MediaExtractor();
-    virtual ~MediaExtractor() {}
+    virtual ~MediaExtractor();
+
+    MediaAnalyticsItem *mAnalyticsItem;
 
 private:
 
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index f9ab208..0de3559 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -383,6 +383,10 @@
         if ((mAttributes.flags & AUDIO_FLAG_LOW_LATENCY) != 0) {
             flags = (audio_output_flags_t) (flags | AUDIO_OUTPUT_FLAG_FAST);
         }
+        // check deep buffer after flags have been modified above
+        if (flags == AUDIO_OUTPUT_FLAG_NONE && (mAttributes.flags & AUDIO_FLAG_DEEP_BUFFER) != 0) {
+            flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
+        }
     }
 
     // these below should probably come from the audioFlinger too...
diff --git a/media/libaudiohal/DeviceHalHidl.cpp b/media/libaudiohal/DeviceHalHidl.cpp
index a6ced12..dcedfd3 100644
--- a/media/libaudiohal/DeviceHalHidl.cpp
+++ b/media/libaudiohal/DeviceHalHidl.cpp
@@ -50,6 +50,10 @@
 status_t deviceAddressFromHal(
         audio_devices_t device, const char* halAddress, DeviceAddress* address) {
     address->device = AudioDevice(device);
+
+    if (address == nullptr || strnlen(halAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN) == 0) {
+        return OK;
+    }
     const bool isInput = (device & AUDIO_DEVICE_BIT_IN) != 0;
     if (isInput) device &= ~AUDIO_DEVICE_BIT_IN;
     if ((!isInput && (device & AUDIO_DEVICE_OUT_ALL_A2DP) != 0)
diff --git a/media/libaudiohal/EffectBufferHalLocal.cpp b/media/libaudiohal/EffectBufferHalLocal.cpp
index 7e6ee85..9fe2c7b 100644
--- a/media/libaudiohal/EffectBufferHalLocal.cpp
+++ b/media/libaudiohal/EffectBufferHalLocal.cpp
@@ -75,10 +75,10 @@
 void EffectBufferHalLocal::commit() {
 }
 
-void EffectBufferHalLocal::update(size_t size) {
+void EffectBufferHalLocal::update(size_t) {
 }
 
-void EffectBufferHalLocal::commit(size_t size) {
+void EffectBufferHalLocal::commit(size_t) {
 }
 
 } // namespace android
diff --git a/media/libaudiohal/EffectsFactoryHalHidl.cpp b/media/libaudiohal/EffectsFactoryHalHidl.cpp
index 1ab5dad..ad12654 100644
--- a/media/libaudiohal/EffectsFactoryHalHidl.cpp
+++ b/media/libaudiohal/EffectsFactoryHalHidl.cpp
@@ -17,7 +17,9 @@
 #define LOG_TAG "EffectsFactoryHalHidl"
 //#define LOG_NDEBUG 0
 
+#include <android/hidl/memory/1.0/IAllocator.h>
 #include <cutils/native_handle.h>
+#include <hidl/ServiceManagement.h>
 #include <media/EffectsFactoryApi.h>
 
 #include "ConversionHelperHidl.h"
@@ -45,6 +47,10 @@
 
 EffectsFactoryHalHidl::EffectsFactoryHalHidl() : ConversionHelperHidl("EffectsFactory"){
     mEffectsFactory = IEffectsFactory::getService("audio_effects_factory");
+    // TODO: Waiting should not be needed (b/34772726).
+    // Also remove include of IAllocator.h and ServiceManagement.h
+    android::hardware::details::waitForHwService(
+            hidl::memory::V1_0::IAllocator::descriptor, "ashmem");
 }
 
 EffectsFactoryHalHidl::~EffectsFactoryHalHidl() {
diff --git a/media/libmedia/Android.mk b/media/libmedia/Android.mk
index 0e40206..6c6c369 100644
--- a/media/libmedia/Android.mk
+++ b/media/libmedia/Android.mk
@@ -57,10 +57,11 @@
     StringArray.cpp \
 
 LOCAL_SHARED_LIBRARIES := \
-	libui liblog libcutils libutils libbinder libsonivox libicuuc libicui18n libexpat \
+        libui liblog libcutils libutils libbinder libsonivox libicuuc libicui18n libexpat \
         libcamera_client libstagefright_foundation \
         libgui libdl libaudioutils libaudioclient \
-        libmedia_helper
+        libmedia_helper \
+        libhidlbase \
 
 LOCAL_EXPORT_SHARED_LIBRARY_HEADERS := libbinder libsonivox
 
@@ -72,6 +73,7 @@
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 
 LOCAL_C_INCLUDES := \
+    $(TOP)/system/libhidl/base/include \
     $(TOP)/frameworks/native/include/media/openmax \
     $(TOP)/frameworks/av/include/media/ \
     $(TOP)/frameworks/av/media/libstagefright \
diff --git a/media/libmedia/IMediaPlayer.cpp b/media/libmedia/IMediaPlayer.cpp
index 9ffde4e..966267a 100644
--- a/media/libmedia/IMediaPlayer.cpp
+++ b/media/libmedia/IMediaPlayer.cpp
@@ -70,8 +70,28 @@
     SET_RETRANSMIT_ENDPOINT,
     GET_RETRANSMIT_ENDPOINT,
     SET_NEXT_PLAYER,
+    // ModDrm
+    PREPARE_DRM,
+    RELEASE_DRM,
+    GET_KEY_REQUEST,
+    PROVIDE_KEY_RESPONSE,
+    RESTORE_KEYS,
+    GET_DRM_PROPERTY_STRING,
+    SET_DRM_PROPERTY_STRING,
 };
 
+// ModDrm helpers
+static void readVector(const Parcel& reply, Vector<uint8_t>& vector) {
+    uint32_t size = reply.readUint32();
+    vector.insertAt((size_t)0, size);
+    reply.read(vector.editArray(), size);
+}
+
+static void writeVector(Parcel& data, Vector<uint8_t> const& vector) {
+    data.writeUint32(vector.size());
+    data.write(vector.array(), vector.size());
+}
+
 class BpMediaPlayer: public BpInterface<IMediaPlayer>
 {
 public:
@@ -447,6 +467,137 @@
 
         return err;
     }
+
+    // ModDrm
+    status_t prepareDrm(const uint8_t uuid[16], const int mode)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        data.write(uuid, 16);
+        data.writeInt32(mode);
+
+        status_t status = remote()->transact(PREPARE_DRM, data, &reply);
+        if (status != OK) {
+            ALOGE("prepareDrm: binder call failed: %d", status);
+            return status;
+        }
+
+        return reply.readInt32();
+    }
+
+    status_t releaseDrm()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        status_t status = remote()->transact(RELEASE_DRM, data, &reply);
+        if (status != OK) {
+            ALOGE("releaseDrm: binder call failed: %d", status);
+            return status;
+        }
+
+        return reply.readInt32();
+    }
+
+    status_t getKeyRequest(Vector<uint8_t> const& scope, String8 const& mimeType,
+            DrmPlugin::KeyType keyType, KeyedVector<String8, String8>& optionalParameters,
+            Vector<uint8_t>& request, String8& defaultUrl,
+            DrmPlugin::KeyRequestType& keyRequestType)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        writeVector(data, scope);
+        data.writeString8(mimeType);
+        data.writeInt32((int32_t)keyType);
+
+        data.writeUint32(optionalParameters.size());
+        for (size_t i = 0; i < optionalParameters.size(); ++i) {
+            data.writeString8(optionalParameters.keyAt(i));
+            data.writeString8(optionalParameters.valueAt(i));
+        }
+
+        status_t status = remote()->transact(GET_KEY_REQUEST, data, &reply);
+        if (status != OK) {
+            ALOGE("getKeyRequest: binder call failed: %d", status);
+            return status;
+        }
+
+        readVector(reply, request);
+        defaultUrl = reply.readString8();
+        keyRequestType = (DrmPlugin::KeyRequestType)reply.readInt32();
+
+        return reply.readInt32();
+    }
+
+    status_t provideKeyResponse(Vector<uint8_t>& releaseKeySetId, Vector<uint8_t>& response,
+            Vector<uint8_t> &keySetId)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        writeVector(data, releaseKeySetId);
+        writeVector(data, response);
+
+        status_t status = remote()->transact(PROVIDE_KEY_RESPONSE, data, &reply);
+        if (status != OK) {
+            ALOGE("provideKeyResponse: binder call failed: %d", status);
+            return status;
+        }
+
+        readVector(reply, keySetId);
+
+        return reply.readInt32();
+    }
+
+    status_t restoreKeys(Vector<uint8_t> const& keySetId)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        writeVector(data, keySetId);
+
+        status_t status = remote()->transact(RESTORE_KEYS, data, &reply);
+        if (status != OK) {
+            ALOGE("restoreKeys: binder call failed: %d", status);
+            return status;
+        }
+
+        return reply.readInt32();
+    }
+
+    status_t getDrmPropertyString(String8 const& name, String8& value)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        data.writeString8(name);
+        status_t status = remote()->transact(GET_DRM_PROPERTY_STRING, data, &reply);
+        if (status != OK) {
+            ALOGE("getDrmPropertyString: binder call failed: %d", status);
+            return status;
+        }
+
+        value = reply.readString8();
+        return reply.readInt32();
+    }
+
+    status_t setDrmPropertyString(String8 const& name, String8 const& value)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+
+        data.writeString8(name);
+        data.writeString8(value);
+        status_t status = remote()->transact(SET_DRM_PROPERTY_STRING, data, &reply);
+        if (status != OK) {
+            ALOGE("setDrmPropertyString: binder call failed: %d", status);
+            return status;
+        }
+
+        return reply.readInt32();
+    }
 };
 
 IMPLEMENT_META_INTERFACE(MediaPlayer, "android.media.IMediaPlayer");
@@ -741,6 +892,93 @@
 
             return NO_ERROR;
         } break;
+
+        // ModDrm
+        case PREPARE_DRM: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            uint8_t uuid[16];
+            data.read(uuid, sizeof(uuid));
+
+            int mode = data.readInt32();
+
+            uint32_t result = prepareDrm(uuid, mode);
+            reply->writeInt32(result);
+            return OK;
+        }
+        case RELEASE_DRM: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+
+            uint32_t result = releaseDrm();
+            reply->writeInt32(result);
+            return OK;
+        }
+        case GET_KEY_REQUEST: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+
+            Vector<uint8_t> scope;
+            readVector(data, scope);
+            String8 mimeType = data.readString8();
+            DrmPlugin::KeyType keyType = (DrmPlugin::KeyType)data.readInt32();
+
+            KeyedVector<String8, String8> optionalParameters;
+            uint32_t count = data.readUint32();
+            for (size_t i = 0; i < count; ++i) {
+                String8 key, value;
+                key = data.readString8();
+                value = data.readString8();
+                optionalParameters.add(key, value);
+            }
+
+            Vector<uint8_t> request;
+            String8 defaultUrl;
+            DrmPlugin::KeyRequestType keyRequestType = DrmPlugin::kKeyRequestType_Unknown;
+
+            status_t result = getKeyRequest(scope, mimeType, keyType, optionalParameters,
+                                      request, defaultUrl, keyRequestType);
+
+            writeVector(*reply, request);
+            reply->writeString8(defaultUrl);
+            reply->writeInt32(keyRequestType);
+            reply->writeInt32(result);
+            return OK;
+        }
+        case PROVIDE_KEY_RESPONSE: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            Vector<uint8_t> releaseKeySetId, response, keySetId;
+            readVector(data, releaseKeySetId);
+            readVector(data, response);
+            uint32_t result = provideKeyResponse(releaseKeySetId, response, keySetId);
+            writeVector(*reply, keySetId);
+            reply->writeInt32(result);
+            return OK;
+        }
+        case RESTORE_KEYS: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+
+            Vector<uint8_t> keySetId;
+            readVector(data, keySetId);
+            uint32_t result = restoreKeys(keySetId);
+            reply->writeInt32(result);
+            return OK;
+        }
+        case GET_DRM_PROPERTY_STRING: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            String8 name, value;
+            name = data.readString8();
+            uint32_t result = getDrmPropertyString(name, value);
+            reply->writeString8(value);
+            reply->writeInt32(result);
+            return OK;
+        }
+        case SET_DRM_PROPERTY_STRING: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            String8 name, value;
+            name = data.readString8();
+            value = data.readString8();
+            uint32_t result = setDrmPropertyString(name, value);
+            reply->writeInt32(result);
+            return OK;
+        }
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/media/libmedia/MediaAnalyticsItem.cpp b/media/libmedia/MediaAnalyticsItem.cpp
index 375d1d5..229e747 100644
--- a/media/libmedia/MediaAnalyticsItem.cpp
+++ b/media/libmedia/MediaAnalyticsItem.cpp
@@ -51,7 +51,7 @@
 
 const char * const MediaAnalyticsItem::EnabledProperty  = "media.metrics.enabled";
 const char * const MediaAnalyticsItem::EnabledPropertyPersist  = "persist.media.metrics.enabled";
-const int MediaAnalyticsItem::EnabledProperty_default  = 0;
+const int MediaAnalyticsItem::EnabledProperty_default  = 1;
 
 
 // access functions for the class
diff --git a/media/libmedia/OMXBuffer.cpp b/media/libmedia/OMXBuffer.cpp
index 8ea70e4..c8995c9 100644
--- a/media/libmedia/OMXBuffer.cpp
+++ b/media/libmedia/OMXBuffer.cpp
@@ -17,6 +17,7 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "OMXBuffer"
 
+#include <media/stagefright/foundation/ADebug.h>
 #include <media/MediaCodecBuffer.h>
 #include <media/OMXBuffer.h>
 #include <binder/IMemory.h>
@@ -39,6 +40,12 @@
       mRangeLength(codecBuffer != NULL ? codecBuffer->size() : 0) {
 }
 
+OMXBuffer::OMXBuffer(OMX_U32 rangeOffset, OMX_U32 rangeLength)
+    : mBufferType(kBufferTypePreset),
+      mRangeOffset(rangeOffset),
+      mRangeLength(rangeLength) {
+}
+
 OMXBuffer::OMXBuffer(const sp<IMemory> &mem)
     : mBufferType(kBufferTypeSharedMem),
       mMem(mem) {
@@ -54,10 +61,16 @@
       mNativeHandle(handle) {
 }
 
+OMXBuffer::OMXBuffer(const hidl_memory &hidlMemory)
+    : mBufferType(kBufferTypeHidlMemory),
+      mHidlMemory(hidlMemory) {
+}
+
 OMXBuffer::~OMXBuffer() {
 }
 
 status_t OMXBuffer::writeToParcel(Parcel *parcel) const {
+    CHECK(mBufferType != kBufferTypeHidlMemory);
     parcel->writeInt32(mBufferType);
 
     switch(mBufferType) {
@@ -93,6 +106,7 @@
 
 status_t OMXBuffer::readFromParcel(const Parcel *parcel) {
     BufferType bufferType = (BufferType) parcel->readInt32();
+    CHECK(bufferType != kBufferTypeHidlMemory);
 
     switch(bufferType) {
         case kBufferTypePreset:
@@ -147,10 +161,12 @@
 
 OMXBuffer& OMXBuffer::operator=(OMXBuffer&& source) {
     mBufferType = std::move(source.mBufferType);
+    mRangeOffset = std::move(source.mRangeOffset);
     mRangeLength = std::move(source.mRangeLength);
     mMem = std::move(source.mMem);
     mGraphicBuffer = std::move(source.mGraphicBuffer);
     mNativeHandle = std::move(source.mNativeHandle);
+    mHidlMemory = source.mHidlMemory; // TODO(b/34093434): Use move when available
     return *this;
 }
 
diff --git a/media/libmedia/mediaplayer.cpp b/media/libmedia/mediaplayer.cpp
index 40af8de..2feb035 100644
--- a/media/libmedia/mediaplayer.cpp
+++ b/media/libmedia/mediaplayer.cpp
@@ -36,6 +36,7 @@
 #include <media/AudioSystem.h>
 #include <media/AVSyncSettings.h>
 #include <media/IDataSource.h>
+#include <media/MediaAnalyticsItem.h>
 
 #include <binder/MemoryBase.h>
 
@@ -810,7 +811,11 @@
     ALOGV("MediaPlayer::getParameter(%d)", key);
     Mutex::Autolock _l(mLock);
     if (mPlayer != NULL) {
-        return  mPlayer->getParameter(key, reply);
+        status_t status =  mPlayer->getParameter(key, reply);
+        if (status != OK) {
+            ALOGD("getParameter returns %d", status);
+        }
+        return status;
     }
     ALOGV("getParameter: no active player");
     return INVALID_OPERATION;
@@ -874,7 +879,7 @@
     case MEDIA_NOP: // interface test message
         break;
     case MEDIA_PREPARED:
-        ALOGV("prepared");
+        ALOGV("MediaPlayer::notify() prepared");
         mCurrentState = MEDIA_PLAYER_PREPARED;
         if (mPrepareSync) {
             ALOGV("signal application thread");
@@ -883,6 +888,9 @@
             mSignal.signal();
         }
         break;
+    case MEDIA_DRM_INFO:
+        ALOGV("MediaPlayer::notify() MEDIA_DRM_INFO(%d, %d, %d, %p)", msg, ext1, ext2, obj);
+        break;
     case MEDIA_PLAYBACK_COMPLETE:
         ALOGV("playback complete");
         if (mCurrentState == MEDIA_PLAYER_IDLE) {
@@ -983,4 +991,123 @@
     return mPlayer->setNextPlayer(next == NULL ? NULL : next->mPlayer);
 }
 
+// ModDrm
+status_t MediaPlayer::prepareDrm(const uint8_t uuid[16], const int mode)
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Only allowing it in player's prepared state
+    if (!(mCurrentState & MEDIA_PLAYER_PREPARED)) {
+        ALOGE("prepareDrm must only be called in the prepared state.");
+        return INVALID_OPERATION;
+    }
+
+    status_t ret = mPlayer->prepareDrm(uuid, mode);
+    ALOGV("prepareDrm: ret=%d", ret);
+
+    return ret;
+}
+
+status_t MediaPlayer::releaseDrm()
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Not allowing releaseDrm in an active state
+    if (mCurrentState & (MEDIA_PLAYER_STARTED | MEDIA_PLAYER_PAUSED)) {
+        ALOGE("releaseDrm can not be called in the started/paused state.");
+        return INVALID_OPERATION;
+    }
+
+    status_t ret = mPlayer->releaseDrm();
+    ALOGV("releaseDrm: ret=%d", ret);
+
+    return ret;
+}
+
+status_t MediaPlayer::getKeyRequest(Vector<uint8_t> const& scope, String8 const& mimeType,
+                              DrmPlugin::KeyType keyType,
+                              KeyedVector<String8, String8>& optionalParameters,
+                              Vector<uint8_t>& request, String8& defaultUrl,
+                              DrmPlugin::KeyRequestType& keyRequestType)
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Not enforcing a particular state beyond the checks enforced by the Java layer
+    // Key exchange can happen after the start.
+    status_t ret = mPlayer->getKeyRequest(scope, mimeType, keyType, optionalParameters,
+                                     request, defaultUrl, keyRequestType);
+    ALOGV("getKeyRequest ret=%d  %d %s %d ", ret,
+          (int)request.size(), defaultUrl.string(), (int)keyRequestType);
+
+    return ret;
+}
+
+status_t MediaPlayer::provideKeyResponse(Vector<uint8_t>& releaseKeySetId,
+                              Vector<uint8_t>& response, Vector<uint8_t>& keySetId)
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Not enforcing a particular state beyond the checks enforced by the Java layer
+    // Key exchange can happen after the start.
+    status_t ret = mPlayer->provideKeyResponse(releaseKeySetId, response, keySetId);
+    ALOGV("provideKeyResponse: ret=%d", ret);
+
+    return ret;
+}
+
+status_t MediaPlayer::restoreKeys(Vector<uint8_t> const& keySetId)
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Not enforcing a particular state beyond the checks enforced by the Java layer
+    // Key exchange can happen after the start.
+    status_t ret = mPlayer->restoreKeys(keySetId);
+    ALOGV("restoreKeys: ret=%d", ret);
+
+    return ret;
+}
+
+status_t MediaPlayer::getDrmPropertyString(String8 const& name, String8& value)
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Not enforcing a particular state beyond the checks enforced by the Java layer
+    status_t ret = mPlayer->getDrmPropertyString(name, value);
+    ALOGV("getDrmPropertyString: ret=%d", ret);
+
+    return ret;
+}
+
+status_t MediaPlayer::setDrmPropertyString(String8 const& name, String8 const& value)
+{
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == NULL) {
+        return NO_INIT;
+    }
+
+    // Not enforcing a particular state beyond the checks enforced by the Java layer
+    status_t ret = mPlayer->setDrmPropertyString(name, value);
+    ALOGV("setDrmPropertyString: ret=%d", ret);
+
+    return ret;
+}
+
 } // namespace android
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index db182b2..819973e 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -347,6 +347,32 @@
         virtual status_t        dump(int fd, const Vector<String16>& args);
 
                 audio_session_t getAudioSessionId() { return mAudioSessionId; }
+        // ModDrm
+        virtual status_t prepareDrm(const uint8_t /*uuid*/[16], const int /*mode*/)
+                            { return INVALID_OPERATION; }
+        virtual status_t releaseDrm()
+                            { return INVALID_OPERATION; }
+        virtual status_t getKeyRequest(Vector<uint8_t> const& /*scope*/,
+                                 String8 const& /*mimeType*/,
+                                 DrmPlugin::KeyType /*keyType*/,
+                                 KeyedVector<String8, String8>& /*optionalParameters*/,
+                                 Vector<uint8_t>& /*request*/,
+                                 String8& /*defaultUrl*/,
+                                 DrmPlugin::KeyRequestType& /*keyRequestType*/)
+                            { return INVALID_OPERATION; }
+        virtual status_t provideKeyResponse(Vector<uint8_t>& /*releaseKeySetId*/,
+                                 Vector<uint8_t>& /*response*/,
+                                 Vector<uint8_t>& /*keySetId*/)
+                            { return INVALID_OPERATION; }
+        virtual status_t restoreKeys(Vector<uint8_t> const& /*keySetId*/)
+                            { return INVALID_OPERATION; }
+        virtual status_t getDrmPropertyString(String8 const& /*name*/,
+                                              String8& /*value*/)
+                            { return INVALID_OPERATION; }
+        virtual status_t setDrmPropertyString(String8 const& /*name*/,
+                                              String8 const& /*value*/)
+                            { return INVALID_OPERATION; }
+
 
     private:
         class ServiceDeathNotifier: public IBinder::DeathRecipient
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index 4c576a5..6593fcd 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -1822,7 +1822,8 @@
     // Take into account sample aspect ratio if necessary:
     int32_t sarWidth, sarHeight;
     if (inputFormat->findInt32("sar-width", &sarWidth)
-            && inputFormat->findInt32("sar-height", &sarHeight)) {
+            && inputFormat->findInt32("sar-height", &sarHeight)
+            && sarWidth > 0 && sarHeight > 0) {
         ALOGV("Sample aspect ratio %d : %d", sarWidth, sarHeight);
 
         displayWidth = (displayWidth * sarWidth) / sarHeight;
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
index b8bb8fe..0ddbd63 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
@@ -706,7 +706,16 @@
     return INVALID_OPERATION;
 }
 
-status_t NuPlayerDriver::getParameter(int /* key */, Parcel * /* reply */) {
+status_t NuPlayerDriver::getParameter(int key, Parcel *reply) {
+
+    if (key == FOURCC('m','t','r','X')) {
+        // mtrX -- a play on 'metrics' (not matrix)
+        // gather current info all together, parcel it, and send it back
+        finalizeMetrics("api");
+        mAnalyticsItem->writeToParcel(reply);
+        return OK;
+    }
+
     return INVALID_OPERATION;
 }
 
diff --git a/media/libmediaplayerservice/tests/Android.mk b/media/libmediaplayerservice/tests/Android.mk
index c0b3265..dc761ec 100644
--- a/media/libmediaplayerservice/tests/Android.mk
+++ b/media/libmediaplayerservice/tests/Android.mk
@@ -14,6 +14,8 @@
 	libmediaplayerservice \
 	libmediadrm \
 	libutils \
+	android.hidl.base@1.0 \
+	android.hardware.drm@1.0 \
 
 LOCAL_C_INCLUDES := \
 	frameworks/av/include \
diff --git a/media/liboboe/examples/write_sine/src/write_sine_threaded.cpp b/media/liboboe/examples/write_sine/src/write_sine_threaded.cpp
index aedcc6e..66f018b 100644
--- a/media/liboboe/examples/write_sine/src/write_sine_threaded.cpp
+++ b/media/liboboe/examples/write_sine/src/write_sine_threaded.cpp
@@ -27,6 +27,7 @@
 #include "SineGenerator.h"
 
 #define NUM_SECONDS   10
+
 #define SHARING_MODE  OBOE_SHARING_MODE_EXCLUSIVE
 //#define SHARING_MODE  OBOE_SHARING_MODE_LEGACY
 
@@ -133,15 +134,18 @@
     }
 
     oboe_result_t close() {
-        stop();
-        OboeStream_close(mStream);
-        mStream = OBOE_HANDLE_INVALID;
-        OboeStreamBuilder_delete(mBuilder);
-        mBuilder = OBOE_HANDLE_INVALID;
-        delete mOutputBuffer;
-        mOutputBuffer = nullptr;
-        delete mConversionBuffer;
-        mConversionBuffer = nullptr;
+        if (mStream != OBOE_HANDLE_INVALID) {
+            stop();
+            printf("call OboeStream_close(0x%08x)\n", mStream);  fflush(stdout);
+            OboeStream_close(mStream);
+            mStream = OBOE_HANDLE_INVALID;
+            OboeStreamBuilder_delete(mBuilder);
+            mBuilder = OBOE_HANDLE_INVALID;
+            delete mOutputBuffer;
+            mOutputBuffer = nullptr;
+            delete mConversionBuffer;
+            mConversionBuffer = nullptr;
+        }
         return OBOE_OK;
     }
 
@@ -274,9 +278,9 @@
     printf("player.getFramesPerSecond() = %d\n", player.getFramesPerSecond());
     printf("player.getSamplesPerFrame() = %d\n", player.getSamplesPerFrame());
     myData.sineOsc1.setup(440.0, 48000);
-    myData.sineOsc1.setSweep(300.0, 2000.0, 5.0);
+    myData.sineOsc1.setSweep(300.0, 600.0, 5.0);
     myData.sineOsc2.setup(660.0, 48000);
-    myData.sineOsc2.setSweep(400.0, 3000.0, 7.0);
+    myData.sineOsc2.setSweep(350.0, 900.0, 7.0);
     myData.samplesPerFrame = player.getSamplesPerFrame();
 
     result = player.start();
diff --git a/media/liboboe/include/oboe/OboeAudio.h b/media/liboboe/include/oboe/OboeAudio.h
index 52e3f69..7ad354c 100644
--- a/media/liboboe/include/oboe/OboeAudio.h
+++ b/media/liboboe/include/oboe/OboeAudio.h
@@ -154,7 +154,7 @@
 
 
 /**
- * Request a sample data format, for example OBOE_AUDIO_FORMAT_PCM16.
+ * Request a sample data format, for example OBOE_AUDIO_FORMAT_PCM_I16.
  * The application should query for the actual format after the stream is opened.
  *
  * @return OBOE_OK or a negative error.
diff --git a/media/liboboe/include/oboe/OboeDefinitions.h b/media/liboboe/include/oboe/OboeDefinitions.h
index 9d56a24..9ad7387 100644
--- a/media/liboboe/include/oboe/OboeDefinitions.h
+++ b/media/liboboe/include/oboe/OboeDefinitions.h
@@ -67,12 +67,17 @@
 enum oboe_audio_format_t {
     OBOE_AUDIO_FORMAT_INVALID = -1,
     OBOE_AUDIO_FORMAT_UNSPECIFIED = 0,
-    OBOE_AUDIO_FORMAT_PCM16, // TODO rename to _PCM_I16
+    OBOE_AUDIO_FORMAT_PCM_I16,
     OBOE_AUDIO_FORMAT_PCM_FLOAT,
-    OBOE_AUDIO_FORMAT_PCM824, // TODO rename to _PCM_I8_24
-    OBOE_AUDIO_FORMAT_PCM32  // TODO rename to _PCM_I32
+    OBOE_AUDIO_FORMAT_PCM_I8_24,
+    OBOE_AUDIO_FORMAT_PCM_I32
 };
 
+// TODO These are deprecated. Remove these aliases once all references are replaced.
+#define OBOE_AUDIO_FORMAT_PCM16    OBOE_AUDIO_FORMAT_PCM_I16
+#define OBOE_AUDIO_FORMAT_PCM824   OBOE_AUDIO_FORMAT_PCM_I8_24
+#define OBOE_AUDIO_FORMAT_PCM32    OBOE_AUDIO_FORMAT_PCM_I32
+
 enum {
     OBOE_OK,
     OBOE_ERROR_BASE = -900, // TODO review
@@ -93,7 +98,8 @@
     OBOE_ERROR_TIMEOUT,
     OBOE_ERROR_WOULD_BLOCK,
     OBOE_ERROR_INVALID_ORDER,
-    OBOE_ERROR_OUT_OF_RANGE
+    OBOE_ERROR_OUT_OF_RANGE,
+    OBOE_ERROR_NO_SERVICE
 };
 
 typedef enum {
diff --git a/media/liboboe/src/binding/IOboeAudioService.cpp b/media/liboboe/src/binding/IOboeAudioService.cpp
index a3437b2..2584bc9 100644
--- a/media/liboboe/src/binding/IOboeAudioService.cpp
+++ b/media/liboboe/src/binding/IOboeAudioService.cpp
@@ -20,6 +20,7 @@
 #include "binding/OboeStreamRequest.h"
 #include "binding/OboeStreamConfiguration.h"
 #include "binding/IOboeAudioService.h"
+#include "utility/OboeUtilities.h"
 
 namespace android {
 
@@ -44,7 +45,7 @@
         request.writeToParcel(&data);
         status_t err = remote()->transact(OPEN_STREAM, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_handle_t stream;
@@ -53,14 +54,14 @@
         return stream;
     }
 
-    virtual oboe_result_t closeStream(int32_t streamHandle) override {
+    virtual oboe_result_t closeStream(oboe_handle_t streamHandle) override {
         Parcel data, reply;
         // send command
         data.writeInterfaceToken(IOboeAudioService::getInterfaceDescriptor());
         data.writeInt32(streamHandle);
         status_t err = remote()->transact(CLOSE_STREAM, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_result_t res;
@@ -69,14 +70,14 @@
     }
 
     virtual oboe_result_t getStreamDescription(oboe_handle_t streamHandle,
-                                               AudioEndpointParcelable &parcelable)   {
+                                               oboe::AudioEndpointParcelable &parcelable)   {
         Parcel data, reply;
         // send command
         data.writeInterfaceToken(IOboeAudioService::getInterfaceDescriptor());
         data.writeInt32(streamHandle);
         status_t err = remote()->transact(GET_STREAM_DESCRIPTION, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         parcelable.readFromParcel(&reply);
@@ -97,7 +98,7 @@
         data.writeInt32(streamHandle);
         status_t err = remote()->transact(START_STREAM, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_result_t res;
@@ -112,7 +113,7 @@
         data.writeInt32(streamHandle);
         status_t err = remote()->transact(PAUSE_STREAM, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_result_t res;
@@ -127,7 +128,7 @@
         data.writeInt32(streamHandle);
         status_t err = remote()->transact(FLUSH_STREAM, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_result_t res;
@@ -135,13 +136,6 @@
         return res;
     }
 
-    virtual void tickle() override { // TODO remove after service thread implemented
-        Parcel data;
-        // send command
-        data.writeInterfaceToken(IOboeAudioService::getInterfaceDescriptor());
-        remote()->transact(TICKLE, data, nullptr);
-    }
-
     virtual oboe_result_t registerAudioThread(oboe_handle_t streamHandle, pid_t clientThreadId,
                                               oboe_nanoseconds_t periodNanoseconds)
     override {
@@ -153,7 +147,7 @@
         data.writeInt64(periodNanoseconds);
         status_t err = remote()->transact(REGISTER_AUDIO_THREAD, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_result_t res;
@@ -170,7 +164,7 @@
         data.writeInt32((int32_t) clientThreadId);
         status_t err = remote()->transact(UNREGISTER_AUDIO_THREAD, data, &reply);
         if (err != NO_ERROR) {
-            return OBOE_ERROR_INTERNAL; // TODO consider another error
+            return OboeConvert_androidToOboeResult(err);
         }
         // parse reply
         oboe_result_t res;
@@ -189,8 +183,8 @@
 status_t BnOboeAudioService::onTransact(uint32_t code, const Parcel& data,
                                         Parcel* reply, uint32_t flags) {
     OboeStream stream;
-    OboeStreamRequest request;
-    OboeStreamConfiguration configuration;
+    oboe::OboeStreamRequest request;
+    oboe::OboeStreamConfiguration configuration;
     pid_t pid;
     oboe_nanoseconds_t nanoseconds;
     oboe_result_t result;
@@ -201,7 +195,7 @@
         case OPEN_STREAM: {
             request.readFromParcel(&data);
             stream = openStream(request, configuration);
-            ALOGD("BnOboeAudioService::onTransact OPEN_STREAM 0x%08X", stream);
+            ALOGD("BnOboeAudioService::onTransact OPEN_STREAM server handle = 0x%08X", stream);
             reply->writeInt32(stream);
             configuration.writeToParcel(reply);
             return NO_ERROR;
@@ -221,12 +215,12 @@
             oboe::AudioEndpointParcelable parcelable;
             result = getStreamDescription(stream, parcelable);
             if (result != OBOE_OK) {
-                return -1; // FIXME
+                return OboeConvert_oboeToAndroidStatus(result);
             }
             parcelable.dump();
             result = parcelable.validate();
             if (result != OBOE_OK) {
-                return -1; // FIXME
+                return OboeConvert_oboeToAndroidStatus(result);
             }
             parcelable.writeToParcel(reply);
             reply->writeInt32(result);
@@ -281,12 +275,6 @@
             return NO_ERROR;
         } break;
 
-        case TICKLE: {
-            ALOGV("BnOboeAudioService::onTransact TICKLE");
-            tickle();
-            return NO_ERROR;
-        } break;
-
         default:
             // ALOGW("BnOboeAudioService::onTransact not handled %u", code);
             return BBinder::onTransact(code, data, reply, flags);
diff --git a/media/liboboe/src/binding/IOboeAudioService.h b/media/liboboe/src/binding/IOboeAudioService.h
index 4b4c99c..e2a9c15 100644
--- a/media/liboboe/src/binding/IOboeAudioService.h
+++ b/media/liboboe/src/binding/IOboeAudioService.h
@@ -29,13 +29,6 @@
 #include "binding/OboeStreamRequest.h"
 #include "binding/OboeStreamConfiguration.h"
 
-//using android::status_t;
-//using android::IInterface;
-//using android::BnInterface;
-
-using oboe::AudioEndpointParcelable;
-using oboe::OboeStreamRequest;
-using oboe::OboeStreamConfiguration;
 
 namespace android {
 
@@ -45,16 +38,16 @@
 
     DECLARE_META_INTERFACE(OboeAudioService);
 
-    virtual oboe_handle_t openStream(OboeStreamRequest &request,
-                                     OboeStreamConfiguration &configuration) = 0;
+    virtual oboe_handle_t openStream(oboe::OboeStreamRequest &request,
+                                     oboe::OboeStreamConfiguration &configuration) = 0;
 
-    virtual oboe_result_t closeStream(int32_t streamHandle) = 0;
+    virtual oboe_result_t closeStream(oboe_handle_t streamHandle) = 0;
 
     /* Get an immutable description of the in-memory queues
     * used to communicate with the underlying HAL or Service.
     */
     virtual oboe_result_t getStreamDescription(oboe_handle_t streamHandle,
-                                               AudioEndpointParcelable &parcelable) = 0;
+                                               oboe::AudioEndpointParcelable &parcelable) = 0;
 
     /**
      * Start the flow of data.
@@ -79,14 +72,6 @@
 
     virtual oboe_result_t unregisterAudioThread(oboe_handle_t streamHandle,
                                                 pid_t clientThreadId) = 0;
-
-    /**
-     * Poke server instead of running a background thread.
-     * Cooperative multi-tasking for early development only.
-     * TODO remove tickle() when service has its own thread.
-     */
-    virtual void tickle() { };
-
 };
 
 class BnOboeAudioService : public BnInterface<IOboeAudioService> {
diff --git a/media/liboboe/src/binding/OboeServiceDefinitions.h b/media/liboboe/src/binding/OboeServiceDefinitions.h
index ad00fe2..33a192f 100644
--- a/media/liboboe/src/binding/OboeServiceDefinitions.h
+++ b/media/liboboe/src/binding/OboeServiceDefinitions.h
@@ -37,8 +37,7 @@
     PAUSE_STREAM,
     FLUSH_STREAM,
     REGISTER_AUDIO_THREAD,
-    UNREGISTER_AUDIO_THREAD,
-    TICKLE
+    UNREGISTER_AUDIO_THREAD
 };
 
 } // namespace android
@@ -53,8 +52,7 @@
     PAUSE_STREAM,
     FLUSH_STREAM,
     REGISTER_AUDIO_THREAD,
-    UNREGISTER_AUDIO_THREAD,
-    TICKLE
+    UNREGISTER_AUDIO_THREAD
 };
 
 // TODO Expand this to include all the open parameters.
diff --git a/media/liboboe/src/binding/OboeStreamConfiguration.cpp b/media/liboboe/src/binding/OboeStreamConfiguration.cpp
index 4b8b5b2..124e964 100644
--- a/media/liboboe/src/binding/OboeStreamConfiguration.cpp
+++ b/media/liboboe/src/binding/OboeStreamConfiguration.cpp
@@ -65,10 +65,10 @@
     }
 
     switch (mAudioFormat) {
-    case OBOE_AUDIO_FORMAT_PCM16:
+    case OBOE_AUDIO_FORMAT_PCM_I16:
     case OBOE_AUDIO_FORMAT_PCM_FLOAT:
-    case OBOE_AUDIO_FORMAT_PCM824:
-    case OBOE_AUDIO_FORMAT_PCM32:
+    case OBOE_AUDIO_FORMAT_PCM_I8_24:
+    case OBOE_AUDIO_FORMAT_PCM_I32:
         break;
     default:
         ALOGE("OboeStreamConfiguration.validate() invalid audioFormat = %d", mAudioFormat);
diff --git a/media/liboboe/src/client/AudioStreamInternal.cpp b/media/liboboe/src/client/AudioStreamInternal.cpp
index 0d169e1..dc6fe90 100644
--- a/media/liboboe/src/client/AudioStreamInternal.cpp
+++ b/media/liboboe/src/client/AudioStreamInternal.cpp
@@ -22,6 +22,7 @@
 #include <assert.h>
 
 #include <binder/IServiceManager.h>
+#include <utils/Mutex.h>
 
 #include <oboe/OboeAudio.h>
 
@@ -40,16 +41,40 @@
 using android::IServiceManager;
 using android::defaultServiceManager;
 using android::interface_cast;
+using android::Mutex;
 
 using namespace oboe;
 
+static android::Mutex gServiceLock;
+static sp<IOboeAudioService>  gOboeService;
+
+#define OBOE_SERVICE_NAME   "OboeAudioService"
+
 // Helper function to get access to the "OboeAudioService" service.
-static sp<IOboeAudioService> getOboeAudioService() {
-    sp<IServiceManager> sm = defaultServiceManager();
-    sp<IBinder> binder = sm->getService(String16("OboeAudioService"));
-    // TODO: If the "OboeHack" service is not running, getService times out and binder == 0.
-    sp<IOboeAudioService> service = interface_cast<IOboeAudioService>(binder);
-    return service;
+// This code was modeled after frameworks/av/media/libaudioclient/AudioSystem.cpp
+static const sp<IOboeAudioService> getOboeAudioService() {
+    sp<IBinder> binder;
+    Mutex::Autolock _l(gServiceLock);
+    if (gOboeService == 0) {
+        sp<IServiceManager> sm = defaultServiceManager();
+        // Try several times to get the service.
+        int retries = 4;
+        do {
+            binder = sm->getService(String16(OBOE_SERVICE_NAME)); // This will wait a while.
+            if (binder != 0) {
+                break;
+            }
+        } while (retries-- > 0);
+
+        if (binder != 0) {
+            // TODO Add linkToDeath() like in frameworks/av/media/libaudioclient/AudioSystem.cpp
+            // TODO Create a DeathRecipient that disconnects all active streams.
+            gOboeService = interface_cast<IOboeAudioService>(binder);
+        } else {
+            ALOGE("AudioStreamInternal could not get %s", OBOE_SERVICE_NAME);
+        }
+    }
+    return gOboeService;
 }
 
 AudioStreamInternal::AudioStreamInternal()
@@ -59,9 +84,6 @@
         , mServiceStreamHandle(OBOE_HANDLE_INVALID)
         , mFramesPerBurst(16)
 {
-    // TODO protect against mService being NULL;
-    // TODO Model access to the service on frameworks/av/media/libaudioclient/AudioSystem.cpp
-    mService = getOboeAudioService();
 }
 
 AudioStreamInternal::~AudioStreamInternal() {
@@ -69,6 +91,9 @@
 
 oboe_result_t AudioStreamInternal::open(const AudioStreamBuilder &builder) {
 
+    const sp<IOboeAudioService>& service = getOboeAudioService();
+    if (service == 0) return OBOE_ERROR_NO_SERVICE;
+
     oboe_result_t result = OBOE_OK;
     OboeStreamRequest request;
     OboeStreamConfiguration configuration;
@@ -78,7 +103,7 @@
         return result;
     }
 
-    // Build the request.
+    // Build the request to send to the server.
     request.setUserId(getuid());
     request.setProcessId(getpid());
     request.getConfiguration().setDeviceId(getDeviceId());
@@ -87,7 +112,7 @@
     request.getConfiguration().setAudioFormat(getFormat());
     request.dump();
 
-    mServiceStreamHandle = mService->openStream(request, configuration);
+    mServiceStreamHandle = service->openStream(request, configuration);
     ALOGD("AudioStreamInternal.open(): openStream returned mServiceStreamHandle = 0x%08X",
          (unsigned int)mServiceStreamHandle);
     if (mServiceStreamHandle < 0) {
@@ -105,10 +130,10 @@
         setFormat(configuration.getAudioFormat());
 
         oboe::AudioEndpointParcelable parcelable;
-        result = mService->getStreamDescription(mServiceStreamHandle, parcelable);
+        result = service->getStreamDescription(mServiceStreamHandle, parcelable);
         if (result != OBOE_OK) {
             ALOGE("AudioStreamInternal.open(): getStreamDescriptor returns %d", result);
-            mService->closeStream(mServiceStreamHandle);
+            service->closeStream(mServiceStreamHandle);
             return result;
         }
         // resolve parcelable into a descriptor
@@ -133,11 +158,14 @@
 oboe_result_t AudioStreamInternal::close() {
     ALOGD("AudioStreamInternal.close(): mServiceStreamHandle = 0x%08X", mServiceStreamHandle);
     if (mServiceStreamHandle != OBOE_HANDLE_INVALID) {
-        mService->closeStream(mServiceStreamHandle);
+        oboe_handle_t serviceStreamHandle = mServiceStreamHandle;
         mServiceStreamHandle = OBOE_HANDLE_INVALID;
+        const sp<IOboeAudioService>& oboeService = getOboeAudioService();
+        if (oboeService == 0) return OBOE_ERROR_NO_SERVICE;
+        oboeService->closeStream(serviceStreamHandle);
         return OBOE_OK;
     } else {
-        return OBOE_ERROR_INVALID_STATE;
+        return OBOE_ERROR_INVALID_HANDLE;
     }
 }
 
@@ -148,11 +176,13 @@
     if (mServiceStreamHandle == OBOE_HANDLE_INVALID) {
         return OBOE_ERROR_INVALID_STATE;
     }
+    const sp<IOboeAudioService>& oboeService = getOboeAudioService();
+    if (oboeService == 0) return OBOE_ERROR_NO_SERVICE;
     startTime = Oboe_getNanoseconds(OBOE_CLOCK_MONOTONIC);
     mClockModel.start(startTime);
     processTimestamp(0, startTime);
     setState(OBOE_STREAM_STATE_STARTING);
-    return mService->startStream(mServiceStreamHandle);
+    return oboeService->startStream(mServiceStreamHandle);
 }
 
 oboe_result_t AudioStreamInternal::requestPause()
@@ -161,9 +191,11 @@
     if (mServiceStreamHandle == OBOE_HANDLE_INVALID) {
         return OBOE_ERROR_INVALID_STATE;
     }
+    const sp<IOboeAudioService>& oboeService = getOboeAudioService();
+    if (oboeService == 0) return OBOE_ERROR_NO_SERVICE;
     mClockModel.stop(Oboe_getNanoseconds(OBOE_CLOCK_MONOTONIC));
     setState(OBOE_STREAM_STATE_PAUSING);
-    return mService->pauseStream(mServiceStreamHandle);
+    return oboeService->pauseStream(mServiceStreamHandle);
 }
 
 oboe_result_t AudioStreamInternal::requestFlush() {
@@ -171,8 +203,10 @@
     if (mServiceStreamHandle == OBOE_HANDLE_INVALID) {
         return OBOE_ERROR_INVALID_STATE;
     }
-    setState(OBOE_STREAM_STATE_FLUSHING);
-    return mService->flushStream(mServiceStreamHandle);
+    const sp<IOboeAudioService>& oboeService = getOboeAudioService();
+    if (oboeService == 0) return OBOE_ERROR_NO_SERVICE;
+setState(OBOE_STREAM_STATE_FLUSHING);
+    return oboeService->flushStream(mServiceStreamHandle);
 }
 
 void AudioStreamInternal::onFlushFromServer() {
@@ -208,7 +242,9 @@
     if (mServiceStreamHandle == OBOE_HANDLE_INVALID) {
         return OBOE_ERROR_INVALID_STATE;
     }
-    return mService->registerAudioThread(mServiceStreamHandle,
+    const sp<IOboeAudioService>& oboeService = getOboeAudioService();
+    if (oboeService == 0) return OBOE_ERROR_NO_SERVICE;
+    return oboeService->registerAudioThread(mServiceStreamHandle,
                                          gettid(),
                                          getPeriodNanoseconds());
 }
@@ -218,7 +254,9 @@
     if (mServiceStreamHandle == OBOE_HANDLE_INVALID) {
         return OBOE_ERROR_INVALID_STATE;
     }
-    return mService->unregisterAudioThread(mServiceStreamHandle, gettid());
+    const sp<IOboeAudioService>& oboeService = getOboeAudioService();
+    if (oboeService == 0) return OBOE_ERROR_NO_SERVICE;
+    return oboeService->unregisterAudioThread(mServiceStreamHandle, gettid());
 }
 
 // TODO use oboe_clockid_t all the way down to AudioClock
@@ -305,9 +343,6 @@
 oboe_result_t AudioStreamInternal::processCommands() {
     oboe_result_t result = OBOE_OK;
 
-    // Let the service run in case it is a fake service simulator.
-    mService->tickle(); // TODO use real service thread
-
     while (result == OBOE_OK) {
         OboeServiceMessage message;
         if (mAudioEndpoint.readUpCommand(&message) != 1) {
diff --git a/media/liboboe/src/client/AudioStreamInternal.h b/media/liboboe/src/client/AudioStreamInternal.h
index 6f37761..9459f97 100644
--- a/media/liboboe/src/client/AudioStreamInternal.h
+++ b/media/liboboe/src/client/AudioStreamInternal.h
@@ -114,7 +114,6 @@
     AudioEndpoint            mAudioEndpoint;
     oboe_handle_t            mServiceStreamHandle;
     EndpointDescriptor       mEndpointDescriptor;
-    sp<IOboeAudioService>    mService;
     // Offset from underlying frame position.
     oboe_position_frames_t   mFramesOffsetFromService = 0;
     oboe_position_frames_t   mLastFramesRead = 0;
diff --git a/media/liboboe/src/core/OboeAudio.cpp b/media/liboboe/src/core/OboeAudio.cpp
index d98ca36..be563b5 100644
--- a/media/liboboe/src/core/OboeAudio.cpp
+++ b/media/liboboe/src/core/OboeAudio.cpp
@@ -96,6 +96,7 @@
         OBOE_CASE_ENUM(OBOE_ERROR_WOULD_BLOCK);
         OBOE_CASE_ENUM(OBOE_ERROR_INVALID_ORDER);
         OBOE_CASE_ENUM(OBOE_ERROR_OUT_OF_RANGE);
+        OBOE_CASE_ENUM(OBOE_ERROR_NO_SERVICE);
     }
     return "Unrecognized Oboe error.";
 }
@@ -285,7 +286,6 @@
 
 OBOE_API oboe_result_t  OboeStreamBuilder_delete(OboeStreamBuilder builder)
 {
-    // TODO protect the remove() with a Mutex
     AudioStreamBuilder *streamBuilder = (AudioStreamBuilder *)
             sHandleTracker.remove(OBOE_HANDLE_TYPE_STREAM_BUILDER, builder);
     if (streamBuilder != nullptr) {
@@ -297,9 +297,9 @@
 
 OBOE_API oboe_result_t  OboeStream_close(OboeStream stream)
 {
-    // TODO protect the remove() with a Mutex
     AudioStream *audioStream = (AudioStream *)
             sHandleTracker.remove(OBOE_HANDLE_TYPE_STREAM, (oboe_handle_t)stream);
+    ALOGD("OboeStream_close(0x%08X), audioStream = %p", stream, audioStream);
     if (audioStream != nullptr) {
         audioStream->close();
         delete audioStream;
diff --git a/media/liboboe/src/legacy/AudioStreamRecord.cpp b/media/liboboe/src/legacy/AudioStreamRecord.cpp
index 5854974..bf4bd36 100644
--- a/media/liboboe/src/legacy/AudioStreamRecord.cpp
+++ b/media/liboboe/src/legacy/AudioStreamRecord.cpp
@@ -90,7 +90,7 @@
     if (status != OK) {
         close();
         ALOGE("AudioStreamRecord::open(), initCheck() returned %d", status);
-        return OboeConvert_androidToOboeError(status);
+        return OboeConvert_androidToOboeResult(status);
     }
 
     // Get the actual rate.
@@ -121,11 +121,11 @@
     // Get current position so we can detect when the track is playing.
     status_t err = mAudioRecord->getPosition(&mPositionWhenStarting);
     if (err != OK) {
-        return OboeConvert_androidToOboeError(err);
+        return OboeConvert_androidToOboeResult(err);
     }
     err = mAudioRecord->start();
     if (err != OK) {
-        return OboeConvert_androidToOboeError(err);
+        return OboeConvert_androidToOboeResult(err);
     } else {
         setState(OBOE_STREAM_STATE_STARTING);
     }
@@ -160,7 +160,7 @@
     case OBOE_STREAM_STATE_STARTING:
         err = mAudioRecord->getPosition(&position);
         if (err != OK) {
-            result = OboeConvert_androidToOboeError(err);
+            result = OboeConvert_androidToOboeResult(err);
         } else if (position != mPositionWhenStarting) {
             setState(OBOE_STREAM_STATE_STARTED);
         }
@@ -193,7 +193,7 @@
     if (bytesRead == WOULD_BLOCK) {
         return 0;
     } else if (bytesRead < 0) {
-        return OboeConvert_androidToOboeError(bytesRead);
+        return OboeConvert_androidToOboeResult(bytesRead);
     }
     oboe_size_frames_t framesRead = (oboe_size_frames_t)(bytesRead / bytesPerFrame);
     return (oboe_result_t) framesRead;
diff --git a/media/liboboe/src/legacy/AudioStreamRecord.h b/media/liboboe/src/legacy/AudioStreamRecord.h
index 02ff220..a884ed2 100644
--- a/media/liboboe/src/legacy/AudioStreamRecord.h
+++ b/media/liboboe/src/legacy/AudioStreamRecord.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef LEGACY_AUDIOSTREAMRECORD_H
-#define LEGACY_AUDIOSTREAMRECORD_H
+#ifndef LEGACY_AUDIO_STREAM_RECORD_H
+#define LEGACY_AUDIO_STREAM_RECORD_H
 
 #include <media/AudioRecord.h>
 #include <oboe/OboeAudio.h>
@@ -75,4 +75,4 @@
 
 } /* namespace oboe */
 
-#endif /* LEGACY_AUDIOSTREAMRECORD_H */
+#endif /* LEGACY_AUDIO_STREAM_RECORD_H */
diff --git a/media/liboboe/src/legacy/AudioStreamTrack.cpp b/media/liboboe/src/legacy/AudioStreamTrack.cpp
index b2c4ee1..291e56c 100644
--- a/media/liboboe/src/legacy/AudioStreamTrack.cpp
+++ b/media/liboboe/src/legacy/AudioStreamTrack.cpp
@@ -87,12 +87,10 @@
     // Did we get a valid track?
     status_t status = mAudioTrack->initCheck();
     ALOGD("AudioStreamTrack::open(), initCheck() returned %d", status);
-    // FIXME - this should work - if (status != NO_ERROR) {
-    //         But initCheck() is returning 1 !
-    if (status < 0) {
+    if (status != NO_ERROR) {
         close();
         ALOGE("AudioStreamTrack::open(), initCheck() returned %d", status);
-        return OboeConvert_androidToOboeError(status);
+        return OboeConvert_androidToOboeResult(status);
     }
 
     // Get the actual values from the AudioTrack.
@@ -123,11 +121,11 @@
     // Get current position so we can detect when the track is playing.
     status_t err = mAudioTrack->getPosition(&mPositionWhenStarting);
     if (err != OK) {
-        return OboeConvert_androidToOboeError(err);
+        return OboeConvert_androidToOboeResult(err);
     }
     err = mAudioTrack->start();
     if (err != OK) {
-        return OboeConvert_androidToOboeError(err);
+        return OboeConvert_androidToOboeResult(err);
     } else {
         setState(OBOE_STREAM_STATE_STARTING);
     }
@@ -147,7 +145,7 @@
     mAudioTrack->pause();
     status_t err = mAudioTrack->getPosition(&mPositionWhenPausing);
     if (err != OK) {
-        return OboeConvert_androidToOboeError(err);
+        return OboeConvert_androidToOboeResult(err);
     }
     return OBOE_OK;
 }
@@ -191,7 +189,7 @@
         if (mAudioTrack->stopped()) {
             err = mAudioTrack->getPosition(&position);
             if (err != OK) {
-                return OboeConvert_androidToOboeError(err);
+                return OboeConvert_androidToOboeResult(err);
             } else if (position == mPositionWhenPausing) {
                 // Has stream really stopped advancing?
                 setState(OBOE_STREAM_STATE_PAUSED);
@@ -203,7 +201,7 @@
         {
             err = mAudioTrack->getPosition(&position);
             if (err != OK) {
-                return OboeConvert_androidToOboeError(err);
+                return OboeConvert_androidToOboeResult(err);
             } else if (position == 0) {
                 // Advance frames read to match written.
                 setState(OBOE_STREAM_STATE_FLUSHED);
@@ -239,7 +237,7 @@
         return 0;
     } else if (bytesWritten < 0) {
         ALOGE("invalid write, returned %d", (int)bytesWritten);
-        return OboeConvert_androidToOboeError(bytesWritten);
+        return OboeConvert_androidToOboeResult(bytesWritten);
     }
     oboe_size_frames_t framesWritten = (oboe_size_frames_t)(bytesWritten / bytesPerFrame);
     incrementFramesWritten(framesWritten);
@@ -251,7 +249,7 @@
 {
     ssize_t result = mAudioTrack->setBufferSizeInFrames(requestedFrames);
     if (result != OK) {
-        return OboeConvert_androidToOboeError(result);
+        return OboeConvert_androidToOboeResult(result);
     } else {
         *actualFrames = result;
         return OBOE_OK;
diff --git a/media/liboboe/src/legacy/AudioStreamTrack.h b/media/liboboe/src/legacy/AudioStreamTrack.h
index 8c40884..0c41331 100644
--- a/media/liboboe/src/legacy/AudioStreamTrack.h
+++ b/media/liboboe/src/legacy/AudioStreamTrack.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef LEGACY_AUDIOSTREAMTRACK_H
-#define LEGACY_AUDIOSTREAMTRACK_H
+#ifndef LEGACY_AUDIO_STREAM_TRACK_H
+#define LEGACY_AUDIO_STREAM_TRACK_H
 
 #include <media/AudioTrack.h>
 #include <oboe/OboeAudio.h>
@@ -75,4 +75,4 @@
 
 } /* namespace oboe */
 
-#endif /* LEGACY_AUDIOSTREAMTRACK_H */
+#endif /* LEGACY_AUDIO_STREAM_TRACK_H */
diff --git a/media/liboboe/src/utility/AudioClock.h b/media/liboboe/src/utility/AudioClock.h
index 1a5c209..1779d8b 100644
--- a/media/liboboe/src/utility/AudioClock.h
+++ b/media/liboboe/src/utility/AudioClock.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef UTILITY_AUDIOCLOCK_H
-#define UTILITY_AUDIOCLOCK_H
+#ifndef UTILITY_AUDIO_CLOCK_H
+#define UTILITY_AUDIO_CLOCK_H
 
 #include <stdint.h>
 #include <time.h>
@@ -95,4 +95,4 @@
 };
 
 
-#endif // UTILITY_AUDIOCLOCK_H
+#endif // UTILITY_AUDIO_CLOCK_H
diff --git a/media/liboboe/src/utility/HandleTracker.cpp b/media/liboboe/src/utility/HandleTracker.cpp
index bf5fb63..27cc1f8 100644
--- a/media/liboboe/src/utility/HandleTracker.cpp
+++ b/media/liboboe/src/utility/HandleTracker.cpp
@@ -19,13 +19,16 @@
 //#define LOG_NDEBUG 0
 #include <utils/Log.h>
 
+#include <assert.h>
 #include <new>
 #include <stdint.h>
-#include <assert.h>
+#include <utils/Mutex.h>
 
 #include <oboe/OboeDefinitions.h>
 #include "HandleTracker.h"
 
+using android::Mutex;
+
 // Handle format is: tgggiiii
 // where each letter is 4 bits, t=type, g=generation, i=index
 
@@ -80,15 +83,17 @@
 
 HandleTracker::~HandleTracker()
 {
+    Mutex::Autolock _l(mLock);
     delete[] mHandleAddresses;
     delete[] mHandleHeaders;
+    mHandleAddresses = nullptr;
 }
 
 bool HandleTracker::isInitialized() const {
     return mHandleAddresses != nullptr;
 }
 
-handle_tracker_slot_t HandleTracker::allocateSlot() {
+handle_tracker_slot_t HandleTracker::allocateSlot_l() {
     void **allocated = mNextFreeAddress;
     if (allocated == nullptr) {
         return SLOT_UNAVAILABLE;
@@ -98,7 +103,7 @@
     return (allocated - mHandleAddresses);
 }
 
-handle_tracker_generation_t HandleTracker::nextGeneration(handle_tracker_slot_t index) {
+handle_tracker_generation_t HandleTracker::nextGeneration_l(handle_tracker_slot_t index) {
     handle_tracker_generation_t generation = (mHandleHeaders[index] + 1) & GENERATION_MASK;
     // Avoid generation zero so that 0x0 is not a valid handle.
     if (generation == GENERATION_INVALID) {
@@ -116,15 +121,17 @@
         return static_cast<oboe_handle_t>(OBOE_ERROR_NO_MEMORY);
     }
 
+    Mutex::Autolock _l(mLock);
+
     // Find an empty slot.
-    handle_tracker_slot_t index = allocateSlot();
+    handle_tracker_slot_t index = allocateSlot_l();
     if (index == SLOT_UNAVAILABLE) {
         ALOGE("HandleTracker::put() no room for more handles");
         return static_cast<oboe_handle_t>(OBOE_ERROR_NO_FREE_HANDLES);
     }
 
     // Cycle the generation counter so stale handles can be detected.
-    handle_tracker_generation_t generation = nextGeneration(index); // reads header table
+    handle_tracker_generation_t generation = nextGeneration_l(index); // reads header table
     handle_tracker_header_t inputHeader = buildHeader(type, generation);
 
     // These two writes may need to be observed by other threads or cores during get().
@@ -150,6 +157,8 @@
     }
     handle_tracker_generation_t handleGeneration = extractGeneration(handle);
     handle_tracker_header_t inputHeader = buildHeader(type, handleGeneration);
+    // We do not need to synchronize this access to mHandleHeaders because it is constant for
+    // the lifetime of the handle.
     if (inputHeader != mHandleHeaders[index]) {
         ALOGE("HandleTracker::handleToIndex() inputHeader = 0x%08x != mHandleHeaders[%d] = 0x%08x",
              inputHeader, index, mHandleHeaders[index]);
@@ -165,6 +174,8 @@
     }
     handle_tracker_slot_t index = handleToIndex(type, handle);
     if (index >= 0) {
+        // We do not need to synchronize this access to mHandleHeaders because this slot
+        // is allocated and, therefore, not part of the linked list of free slots.
         return mHandleAddresses[index];
     } else {
         return nullptr;
@@ -175,6 +186,9 @@
     if (!isInitialized()) {
         return nullptr;
     }
+
+    Mutex::Autolock _l(mLock);
+
     handle_tracker_slot_t index = handleToIndex(type,handle);
     if (index >= 0) {
         handle_tracker_address_t address = mHandleAddresses[index];
diff --git a/media/liboboe/src/utility/HandleTracker.h b/media/liboboe/src/utility/HandleTracker.h
index 4c08321..f1bead8 100644
--- a/media/liboboe/src/utility/HandleTracker.h
+++ b/media/liboboe/src/utility/HandleTracker.h
@@ -14,10 +14,11 @@
  * limitations under the License.
  */
 
-#ifndef UTILITY_HANDLETRACKER_H
-#define UTILITY_HANDLETRACKER_H
+#ifndef UTILITY_HANDLE_TRACKER_H
+#define UTILITY_HANDLE_TRACKER_H
 
 #include <stdint.h>
+#include <utils/Mutex.h>
 
 typedef int32_t  handle_tracker_type_t;       // what kind of handle
 typedef int32_t  handle_tracker_slot_t;       // index in allocation table
@@ -53,6 +54,8 @@
     /**
      * Store a pointer and return a handle that can be used to retrieve the pointer.
      *
+     * It is safe to call put() or remove() from multiple threads.
+     *
      * @param expectedType the type of the object to be tracked
      * @param address pointer to be converted to a handle
      * @return a valid handle or a negative error
@@ -75,6 +78,8 @@
      * Free up the storage associated with the handle.
      * Subsequent attempts to use the handle will fail.
      *
+     * Do NOT remove() a handle while get() is being called for the same handle from another thread.
+     *
      * @param expectedType shouldmatch the type we passed to put()
      * @param handle to be removed from tracking
      * @return address associated with handle or nullptr if not found
@@ -83,17 +88,28 @@
 
 private:
     const int32_t               mMaxHandleCount;   // size of array
-    // This is const after initialization.
+    // This address is const after initialization.
     handle_tracker_address_t  * mHandleAddresses;  // address of objects or a free linked list node
-    // This is const after initialization.
+    // This address is const after initialization.
     handle_tracker_header_t   * mHandleHeaders;    // combination of type and generation
-    handle_tracker_address_t  * mNextFreeAddress; // head of the linked list of free nodes in mHandleAddresses
+    // head of the linked list of free nodes in mHandleAddresses
+    handle_tracker_address_t  * mNextFreeAddress;
+
+    // This Mutex protects the linked list of free nodes.
+    // The list is managed using mHandleAddresses and mNextFreeAddress.
+    // The data in mHandleHeaders is only changed by put() and remove().
+    android::Mutex              mLock;
 
     /**
      * Pull slot off of a list of empty slots.
      * @return index or a negative error
      */
-    handle_tracker_slot_t allocateSlot();
+    handle_tracker_slot_t allocateSlot_l();
+
+    /**
+     * Increment the generation for the slot, avoiding zero.
+     */
+    handle_tracker_generation_t nextGeneration_l(handle_tracker_slot_t index);
 
     /**
      * Validate the handle and return the corresponding index.
@@ -107,7 +123,7 @@
      * @param index slot index returned from allocateSlot
      * @return handle or a negative error
      */
-    oboe_handle_t buildHandle(handle_tracker_header_t header, handle_tracker_slot_t index);
+    static oboe_handle_t buildHandle(handle_tracker_header_t header, handle_tracker_slot_t index);
 
     /**
      * Combine a type and a generation field into a header.
@@ -129,11 +145,6 @@
      */
     static handle_tracker_generation_t extractGeneration(oboe_handle_t handle);
 
-    /**
-     * Increment the generation for the slot, avoiding zero.
-     */
-    handle_tracker_generation_t nextGeneration(handle_tracker_slot_t index);
-
 };
 
-#endif //UTILITY_HANDLETRACKER_H
+#endif //UTILITY_HANDLE_TRACKER_H
diff --git a/media/liboboe/src/utility/MonotonicCounter.h b/media/liboboe/src/utility/MonotonicCounter.h
index befad21..81d7f89 100644
--- a/media/liboboe/src/utility/MonotonicCounter.h
+++ b/media/liboboe/src/utility/MonotonicCounter.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef UTILITY_MONOTONICCOUNTER_H
-#define UTILITY_MONOTONICCOUNTER_H
+#ifndef UTILITY_MONOTONIC_COUNTER_H
+#define UTILITY_MONOTONIC_COUNTER_H
 
 #include <stdint.h>
 
@@ -88,4 +88,4 @@
 };
 
 
-#endif //UTILITY_MONOTONICCOUNTER_H
+#endif //UTILITY_MONOTONIC_COUNTER_H
diff --git a/media/liboboe/src/utility/OboeUtilities.cpp b/media/liboboe/src/utility/OboeUtilities.cpp
index d9d2e88..fcf4252 100644
--- a/media/liboboe/src/utility/OboeUtilities.cpp
+++ b/media/liboboe/src/utility/OboeUtilities.cpp
@@ -30,11 +30,11 @@
 oboe_size_bytes_t OboeConvert_formatToSizeInBytes(oboe_audio_format_t format) {
     oboe_size_bytes_t size = OBOE_ERROR_ILLEGAL_ARGUMENT;
     switch (format) {
-        case OBOE_AUDIO_FORMAT_PCM16:
+        case OBOE_AUDIO_FORMAT_PCM_I16:
             size = sizeof(int16_t);
             break;
-        case OBOE_AUDIO_FORMAT_PCM32:
-        case OBOE_AUDIO_FORMAT_PCM824:
+        case OBOE_AUDIO_FORMAT_PCM_I32:
+        case OBOE_AUDIO_FORMAT_PCM_I8_24:
             size = sizeof(int32_t);
             break;
         case OBOE_AUDIO_FORMAT_PCM_FLOAT:
@@ -67,14 +67,47 @@
     }
 }
 
-oboe_result_t OboeConvert_androidToOboeError(status_t error) {
-    if (error >= 0) {
-        return error;
+status_t OboeConvert_oboeToAndroidStatus(oboe_result_t result) {
+    // This covers the case for OBOE_OK and for positive results.
+    if (result >= 0) {
+        return result;
+    }
+    status_t status;
+    switch (result) {
+    case OBOE_ERROR_DISCONNECTED:
+    case OBOE_ERROR_INVALID_HANDLE:
+        status = DEAD_OBJECT;
+        break;
+    case OBOE_ERROR_INVALID_STATE:
+        status = INVALID_OPERATION;
+        break;
+    case OBOE_ERROR_UNEXPECTED_VALUE: // TODO redundant?
+    case OBOE_ERROR_ILLEGAL_ARGUMENT:
+        status = BAD_VALUE;
+        break;
+    case OBOE_ERROR_WOULD_BLOCK:
+        status = WOULD_BLOCK;
+        break;
+    // TODO add more result codes
+    default:
+        status = UNKNOWN_ERROR;
+        break;
+    }
+    return status;
+}
+
+oboe_result_t OboeConvert_androidToOboeResult(status_t status) {
+    // This covers the case for OK and for positive result.
+    if (status >= 0) {
+        return status;
     }
     oboe_result_t result;
-    switch (error) {
-    case OK:
-        result = OBOE_OK;
+    switch (status) {
+    case BAD_TYPE:
+        result = OBOE_ERROR_INVALID_HANDLE;
+        break;
+    case DEAD_OBJECT:
+        result = OBOE_ERROR_DISCONNECTED;
         break;
     case INVALID_OPERATION:
         result = OBOE_ERROR_INVALID_STATE;
@@ -85,7 +118,7 @@
     case WOULD_BLOCK:
         result = OBOE_ERROR_WOULD_BLOCK;
         break;
-    // TODO add more error codes
+    // TODO add more status codes
     default:
         result = OBOE_ERROR_INTERNAL;
         break;
@@ -96,16 +129,16 @@
 audio_format_t OboeConvert_oboeToAndroidDataFormat(oboe_audio_format_t oboeFormat) {
     audio_format_t androidFormat;
     switch (oboeFormat) {
-    case OBOE_AUDIO_FORMAT_PCM16:
+    case OBOE_AUDIO_FORMAT_PCM_I16:
         androidFormat = AUDIO_FORMAT_PCM_16_BIT;
         break;
     case OBOE_AUDIO_FORMAT_PCM_FLOAT:
         androidFormat = AUDIO_FORMAT_PCM_FLOAT;
         break;
-    case OBOE_AUDIO_FORMAT_PCM824:
+    case OBOE_AUDIO_FORMAT_PCM_I8_24:
         androidFormat = AUDIO_FORMAT_PCM_8_24_BIT;
         break;
-    case OBOE_AUDIO_FORMAT_PCM32:
+    case OBOE_AUDIO_FORMAT_PCM_I32:
         androidFormat = AUDIO_FORMAT_PCM_32_BIT;
         break;
     default:
@@ -120,16 +153,16 @@
     oboe_audio_format_t oboeFormat = OBOE_AUDIO_FORMAT_INVALID;
     switch (androidFormat) {
     case AUDIO_FORMAT_PCM_16_BIT:
-        oboeFormat = OBOE_AUDIO_FORMAT_PCM16;
+        oboeFormat = OBOE_AUDIO_FORMAT_PCM_I16;
         break;
     case AUDIO_FORMAT_PCM_FLOAT:
         oboeFormat = OBOE_AUDIO_FORMAT_PCM_FLOAT;
         break;
     case AUDIO_FORMAT_PCM_32_BIT:
-        oboeFormat = OBOE_AUDIO_FORMAT_PCM32;
+        oboeFormat = OBOE_AUDIO_FORMAT_PCM_I32;
         break;
     case AUDIO_FORMAT_PCM_8_24_BIT:
-        oboeFormat = OBOE_AUDIO_FORMAT_PCM824;
+        oboeFormat = OBOE_AUDIO_FORMAT_PCM_I8_24;
         break;
     default:
         oboeFormat = OBOE_AUDIO_FORMAT_INVALID;
diff --git a/media/liboboe/src/utility/OboeUtilities.h b/media/liboboe/src/utility/OboeUtilities.h
index 974ccf6..4096e2a 100644
--- a/media/liboboe/src/utility/OboeUtilities.h
+++ b/media/liboboe/src/utility/OboeUtilities.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef UTILITY_OBOEUTILITIES_H
-#define UTILITY_OBOEUTILITIES_H
+#ifndef UTILITY_OBOE_UTILITIES_H
+#define UTILITY_OBOE_UTILITIES_H
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -25,7 +25,15 @@
 
 #include "oboe/OboeDefinitions.h"
 
-oboe_result_t OboeConvert_androidToOboeError(android::status_t error);
+/**
+ * Convert an Oboe result into the closest matching Android status.
+ */
+android::status_t OboeConvert_oboeToAndroidStatus(oboe_result_t result);
+
+/**
+ * Convert an Android status into the closest matching Oboe result.
+ */
+oboe_result_t OboeConvert_androidToOboeResult(android::status_t status);
 
 void OboeConvert_floatToPcm16(const float *source, int32_t numSamples, int16_t *destination);
 
@@ -51,4 +59,4 @@
  */
 oboe_size_bytes_t OboeConvert_formatToSizeInBytes(oboe_audio_format_t format);
 
-#endif //UTILITY_OBOEUTILITIES_H
+#endif //UTILITY_OBOE_UTILITIES_H
diff --git a/media/libstagefright/ACodecBufferChannel.cpp b/media/libstagefright/ACodecBufferChannel.cpp
index 1db7ab0..296394b 100644
--- a/media/libstagefright/ACodecBufferChannel.cpp
+++ b/media/libstagefright/ACodecBufferChannel.cpp
@@ -88,14 +88,9 @@
 }
 
 status_t ACodecBufferChannel::queueSecureInputBuffer(
-        const sp<MediaCodecBuffer> &buffer,
-        bool secure,
-        const uint8_t *key,
-        const uint8_t *iv,
-        CryptoPlugin::Mode mode,
-        CryptoPlugin::Pattern pattern,
-        const CryptoPlugin::SubSample *subSamples,
-        size_t numSubSamples,
+        const sp<MediaCodecBuffer> &buffer, bool secure, const uint8_t *key,
+        const uint8_t *iv, CryptoPlugin::Mode mode, CryptoPlugin::Pattern pattern,
+        const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
         AString *errorDetailMsg) {
     if (mCrypto == nullptr) {
         return -ENOSYS;
@@ -107,35 +102,32 @@
         return -ENOENT;
     }
 
-    void *dst_pointer = nullptr;
-    ICrypto::DestinationType dst_type = ICrypto::kDestinationTypeOpaqueHandle;
-
+    ICrypto::DestinationBuffer destination;
     if (secure) {
-        sp<SecureBuffer> secureData = static_cast<SecureBuffer *>(it->mCodecBuffer.get());
-        dst_pointer = secureData->getDestinationPointer();
-        dst_type = secureData->getDestinationType();
+        sp<SecureBuffer> secureData =
+                static_cast<SecureBuffer *>(it->mCodecBuffer.get());
+        destination.mType = secureData->getDestinationType();
+        if (destination.mType != ICrypto::kDestinationTypeNativeHandle) {
+            return BAD_VALUE;
+        }
+        destination.mHandle =
+                static_cast<native_handle_t *>(secureData->getDestinationPointer());
     } else {
-        dst_pointer = it->mCodecBuffer->base();
-        dst_type = ICrypto::kDestinationTypeVmPointer;
+        destination.mType = ICrypto::kDestinationTypeSharedMemory;
+        destination.mSharedMemory = mDecryptDestination;
     }
-
-    ssize_t result = mCrypto->decrypt(
-            dst_type,
-            key,
-            iv,
-            mode,
-            pattern,
-            it->mSharedEncryptedBuffer,
-            it->mClientBuffer->offset(),
-            subSamples,
-            numSubSamples,
-            dst_pointer,
-            errorDetailMsg);
+    ssize_t result = mCrypto->decrypt(key, iv, mode, pattern,
+            it->mSharedEncryptedBuffer, it->mClientBuffer->offset(),
+            subSamples, numSubSamples, destination, errorDetailMsg);
 
     if (result < 0) {
         return result;
     }
 
+    if (destination.mType == ICrypto::kDestinationTypeSharedMemory) {
+        memcpy(it->mCodecBuffer->base(), destination.mSharedMemory->pointer(), result);
+    }
+
     it->mCodecBuffer->setRange(0, result);
 
     // Copy metadata from client to codec buffer.
@@ -228,7 +220,14 @@
                 (size_t sum, const BufferAndId& elem) {
                     return sum + align(elem.mBuffer->capacity(), alignment);
                 });
-        mDealer = new MemoryDealer(totalSize, "ACodecBufferChannel");
+        size_t maxSize = std::accumulate(
+                array.begin(), array.end(), 0u,
+                [alignment = MemoryDealer::getAllocationAlignment()]
+                (size_t max, const BufferAndId& elem) {
+                    return std::max(max, align(elem.mBuffer->capacity(), alignment));
+                });
+        mDealer = new MemoryDealer(totalSize + maxSize, "ACodecBufferChannel");
+        mDecryptDestination = mDealer->allocate(maxSize);
     }
     std::vector<const BufferInfo> inputBuffers;
     for (const BufferAndId &elem : array) {
diff --git a/media/libstagefright/Android.mk b/media/libstagefright/Android.mk
index 25dd6b1..c2407f7 100644
--- a/media/libstagefright/Android.mk
+++ b/media/libstagefright/Android.mk
@@ -113,6 +113,7 @@
         libstagefright_foundation \
         libdl \
         libRScpp \
+	libhidlbase \
 
 LOCAL_EXPORT_SHARED_LIBRARY_HEADERS := libmedia
 
diff --git a/media/libstagefright/BufferImpl.cpp b/media/libstagefright/BufferImpl.cpp
index 37a40ec..40eb942 100644
--- a/media/libstagefright/BufferImpl.cpp
+++ b/media/libstagefright/BufferImpl.cpp
@@ -51,8 +51,7 @@
 }
 
 ICrypto::DestinationType SecureBuffer::getDestinationType() {
-    return mHandle == nullptr ? ICrypto::kDestinationTypeOpaqueHandle
-                              : ICrypto::kDestinationTypeNativeHandle;
+    return ICrypto::kDestinationTypeNativeHandle;
 }
 
 }  // namespace android
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
index 192eccd..d46ef3c 100755
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -79,6 +79,8 @@
 static const char kMetaKey_CaptureFps[] = "com.android.capture.fps";
 static const char kMetaKey_TemporalLayerCount[] = "com.android.video.temporal_layers_count";
 
+static const int kTimestampDebugCount = 10;
+
 static const uint8_t kMandatoryHevcNalUnitTypes[3] = {
     kHevcNalUnitTypeVps,
     kHevcNalUnitTypeSps,
@@ -305,6 +307,9 @@
     int64_t mMinCttsOffsetTimeUs;
     int64_t mMaxCttsOffsetTimeUs;
 
+    // Save the last 10 frames' timestamp for debug.
+    std::list<std::pair<int64_t, int64_t>> mTimestampDebugHelper;
+
     // Sequence parameter set or picture parameter set
     struct AVCParamSet {
         AVCParamSet(uint16_t length, const uint8_t *data)
@@ -334,6 +339,8 @@
     // Update the audio track's drift information.
     void updateDriftTime(const sp<MetaData>& meta);
 
+    void dumpTimeStamps();
+
     int32_t getStartTimeOffsetScaledTime() const;
 
     static void *ThreadWrapper(void *me);
@@ -2501,6 +2508,17 @@
     }
 }
 
+void MPEG4Writer::Track::dumpTimeStamps() {
+    ALOGE("Dumping %s track's last 10 frames timestamp ", getTrackType());
+    std::string timeStampString;
+    for (std::list<std::pair<int64_t, int64_t>>::iterator num = mTimestampDebugHelper.begin();
+            num != mTimestampDebugHelper.end(); ++num) {
+        timeStampString += "(" + std::to_string(num->first)+
+                "us, " + std::to_string(num->second) + "us) ";
+    }
+    ALOGE("%s", timeStampString.c_str());
+}
+
 status_t MPEG4Writer::Track::threadEntry() {
     int32_t count = 0;
     const int64_t interleaveDurationUs = mOwner->interleaveDuration();
@@ -2706,8 +2724,9 @@
             previousPausedDurationUs += pausedDurationUs - lastDurationUs;
             mResumed = false;
         }
-
+        std::pair<int64_t, int64_t> timestampPair;
         timestampUs -= previousPausedDurationUs;
+        timestampPair.first = timestampUs;
         if (WARN_UNLESS(timestampUs >= 0ll, "for %s track", trackName)) {
             copy->release();
             mSource->stop();
@@ -2729,9 +2748,11 @@
             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);
+                // increase decoding time by at least the larger vaule of 1 tick and
+                // 0.1 milliseconds. This needs to take into account the possible
+                // delta adjustment in DurationTicks in below.
+                decodingTimeUs = std::max(mLastDecodingTimeUs +
+                        std::max(100, divUp(1000000, mTimeScale)), decodingTimeUs);
             }
 
             mLastDecodingTimeUs = decodingTimeUs;
@@ -2864,6 +2885,12 @@
         lastDurationUs = timestampUs - lastTimestampUs;
         lastDurationTicks = currDurationTicks;
         lastTimestampUs = timestampUs;
+        timestampPair.second = timestampUs;
+        // Insert the timestamp into the mTimestampDebugHelper
+        if (mTimestampDebugHelper.size() >= kTimestampDebugCount) {
+            mTimestampDebugHelper.pop_front();
+        }
+        mTimestampDebugHelper.push_back(timestampPair);
 
         if (isSync != 0) {
             addOneStssTableEntry(mStszTableEntries->count());
@@ -2919,6 +2946,7 @@
     }
 
     if (isTrackMalFormed()) {
+        dumpTimeStamps();
         err = ERROR_MALFORMED;
     }
 
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index 9eca982..5dc9ffa 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -33,6 +33,7 @@
 #include <media/IOMX.h>
 #include <media/IResourceManagerService.h>
 #include <media/MediaCodecBuffer.h>
+#include <media/MediaAnalyticsItem.h>
 #include <media/stagefright/foundation/ABuffer.h>
 #include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/foundation/AMessage.h>
@@ -57,6 +58,13 @@
 
 namespace android {
 
+// key for media statistics
+static const char *CodecKeyName = "codec";
+// attrs for media statistics
+static const char *CodecMime = "mime";
+static const char *CodecCodec = "codec";
+
+
 static int64_t getId(const sp<IResourceManagerClient> &client) {
     return (int64_t) client.get();
 }
@@ -476,11 +484,27 @@
     } else {
         mUid = uid;
     }
+    // set up our new record, get a sessionID, put it into the in-progress list
+    mAnalyticsItem = new MediaAnalyticsItem(CodecKeyName);
+    if (mAnalyticsItem != NULL) {
+        (void) mAnalyticsItem->generateSessionID();
+        // don't record it yet; only at the end, when we have decided that we have
+        // data worth writing (e.g. .count() > 0)
+    }
 }
 
 MediaCodec::~MediaCodec() {
     CHECK_EQ(mState, UNINITIALIZED);
     mResourceManagerService->removeResource(getId(mResourceManagerClient));
+
+    if (mAnalyticsItem != NULL ) {
+        if (mAnalyticsItem->count() > 0) {
+            mAnalyticsItem->setFinalized(true);
+            mAnalyticsItem->selfrecord();
+        }
+        delete mAnalyticsItem;
+        mAnalyticsItem = NULL;
+    }
 }
 
 // static
@@ -600,6 +624,19 @@
         msg->setInt32("encoder", encoder);
     }
 
+    if (mAnalyticsItem != NULL) {
+        if (nameIsType) {
+            // name is the mime type
+            mAnalyticsItem->setCString(CodecMime, name.c_str());
+        } else {
+            mAnalyticsItem->setCString(CodecCodec, name.c_str());
+        }
+        mAnalyticsItem->setCString("mode", mIsVideo ? "video" : "audio");
+        //mAnalyticsItem->setInt32("type", nameIsType);
+        if (nameIsType)
+            mAnalyticsItem->setInt32("encoder", encoder);
+    }
+
     status_t err;
     Vector<MediaResource> resources;
     MediaResource::Type type =
@@ -652,6 +689,12 @@
             mRotationDegrees = 0;
         }
 
+        if (mAnalyticsItem != NULL) {
+            mAnalyticsItem->setInt32("width", mVideoWidth);
+            mAnalyticsItem->setInt32("height", mVideoHeight);
+            mAnalyticsItem->setInt32("rotation", mRotationDegrees);
+        }
+
         // Prevent possible integer overflow in downstream code.
         if (mInitIsEncoder
                 && (uint64_t)mVideoWidth * mVideoHeight > (uint64_t)INT32_MAX / 4) {
@@ -666,6 +709,10 @@
 
     if (crypto != NULL) {
         msg->setPointer("crypto", crypto.get());
+        if (mAnalyticsItem != NULL) {
+            // XXX: save indication that it's crypto in some way...
+            mAnalyticsItem->setInt32("crypto", 1);
+        }
     }
 
     // save msg for reset
@@ -1058,6 +1105,21 @@
     return OK;
 }
 
+status_t MediaCodec::getMetrics(Parcel *reply) {
+
+    // shouldn't happen, but be safe
+    if (mAnalyticsItem == NULL) {
+        return UNKNOWN_ERROR;
+    }
+
+    // XXX: go get current values for whatever in-flight data we want
+
+    // send it back to the caller.
+    mAnalyticsItem->writeToParcel(reply);
+
+    return OK;
+}
+
 status_t MediaCodec::getInputBuffers(Vector<sp<MediaCodecBuffer> > *buffers) const {
     sp<AMessage> msg = new AMessage(kWhatGetBuffers, this);
     msg->setInt32("portIndex", kPortIndexInput);
diff --git a/media/libstagefright/MediaExtractor.cpp b/media/libstagefright/MediaExtractor.cpp
index df4d9bf..677d43e 100644
--- a/media/libstagefright/MediaExtractor.cpp
+++ b/media/libstagefright/MediaExtractor.cpp
@@ -36,6 +36,7 @@
 #include <binder/IServiceManager.h>
 #include <binder/MemoryDealer.h>
 
+#include <media/MediaAnalyticsItem.h>
 #include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/foundation/AMessage.h>
 #include <media/stagefright/DataSource.h>
@@ -47,9 +48,16 @@
 #include <utils/String8.h>
 #include <private/android_filesystem_config.h>
 
+// still doing some on/off toggling here.
+#define MEDIA_LOG       1
+
 
 namespace android {
 
+// key for media statistics
+static const char *KeyName_Extractor = "extractor";
+// attrs for media statistics
+
 MediaExtractor::MediaExtractor() {
     if (!LOG_NDEBUG) {
         uid_t uid = getuid();
@@ -57,8 +65,29 @@
         ALOGI("extractor created in uid: %d (%s)", getuid(), pw->pw_name);
     }
 
+    mAnalyticsItem = NULL;
+    if (MEDIA_LOG) {
+        mAnalyticsItem = new MediaAnalyticsItem(KeyName_Extractor);
+        (void) mAnalyticsItem->generateSessionID();
+    }
 }
 
+MediaExtractor::~MediaExtractor() {
+
+    // log the current record, provided it has some information worth recording
+    if (MEDIA_LOG) {
+        if (mAnalyticsItem != NULL) {
+            if (mAnalyticsItem->count() > 0) {
+                mAnalyticsItem->setFinalized(true);
+                mAnalyticsItem->selfrecord();
+            }
+        }
+    }
+    if (mAnalyticsItem != NULL) {
+        delete mAnalyticsItem;
+        mAnalyticsItem = NULL;
+    }
+}
 
 sp<MetaData> MediaExtractor::getMetaData() {
     return new MetaData;
@@ -214,6 +243,31 @@
         ret = new MidiExtractor(source);
     }
 
+    if (ret != NULL) {
+       // track the container format (mpeg, aac, wvm, etc)
+       if (MEDIA_LOG) {
+          if (ret->mAnalyticsItem != NULL) {
+              ret->mAnalyticsItem->setCString("fmt",  ret->name());
+              // tracks (size_t)
+              ret->mAnalyticsItem->setInt32("ntrk",  ret->countTracks());
+              // metadata
+              sp<MetaData> pMetaData = ret->getMetaData();
+              if (pMetaData != NULL) {
+                String8 xx = pMetaData->toString();
+                ALOGD("metadata says: %s", xx.string());
+                // can grab various fields like:
+                // 'titl' -- but this verges into PII
+                // 'mime'
+                const char *mime = NULL;
+                if (pMetaData->findCString(kKeyMIMEType, &mime)) {
+                    ret->mAnalyticsItem->setCString("mime",  mime);
+                }
+                // what else is interesting here?
+              }
+          }
+       }
+    }
+
     return ret;
 }
 
diff --git a/media/libstagefright/avc_utils.cpp b/media/libstagefright/avc_utils.cpp
index 9f15cf7..6e7ef35 100644
--- a/media/libstagefright/avc_utils.cpp
+++ b/media/libstagefright/avc_utils.cpp
@@ -420,8 +420,8 @@
     meta->setInt32(kKeyWidth, width);
     meta->setInt32(kKeyHeight, height);
 
-    if (sarWidth > 1 || sarHeight > 1) {
-        // We treat 0:0 (unspecified) as 1:1.
+    if ((sarWidth > 0 && sarHeight > 0) && (sarWidth != 1 || sarHeight != 1)) {
+        // We treat *:0 and 0:* (unspecified) as 1:1.
 
         meta->setInt32(kKeySARWidth, sarWidth);
         meta->setInt32(kKeySARHeight, sarHeight);
@@ -457,7 +457,10 @@
     const uint8_t *nalStart;
     size_t nalSize;
     while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
-        CHECK_GT(nalSize, 0u);
+        if (nalSize == 0u) {
+            ALOGW("skipping empty nal unit from potentially malformed bitstream");
+            continue;
+        }
 
         unsigned nalType = nalStart[0] & 0x1f;
 
diff --git a/media/libstagefright/include/ACodecBufferChannel.h b/media/libstagefright/include/ACodecBufferChannel.h
index d52ce53..ce9bd3c 100644
--- a/media/libstagefright/include/ACodecBufferChannel.h
+++ b/media/libstagefright/include/ACodecBufferChannel.h
@@ -115,6 +115,7 @@
     const sp<AMessage> mOutputBufferDrained;
 
     sp<MemoryDealer> mDealer;
+    sp<IMemory> mDecryptDestination;
 
     // These should only be accessed via std::atomic_* functions.
     //
diff --git a/media/libstagefright/include/OMXNodeInstance.h b/media/libstagefright/include/OMXNodeInstance.h
index dae7380..c7e60ca 100644
--- a/media/libstagefright/include/OMXNodeInstance.h
+++ b/media/libstagefright/include/OMXNodeInstance.h
@@ -27,11 +27,14 @@
 #include <utils/SortedVector.h>
 #include "OmxNodeOwner.h"
 
+#include <android/hidl/memory/1.0/IMemory.h>
+
 namespace android {
 class IOMXBufferSource;
 class IOMXObserver;
 struct OMXMaster;
 class OMXBuffer;
+typedef hidl::memory::V1_0::IMemory IHidlMemory;
 
 struct OMXNodeInstance : public BnOMXNode {
     OMXNodeInstance(
@@ -184,7 +187,7 @@
 
     status_t useBuffer_l(
             OMX_U32 portIndex, const sp<IMemory> &params,
-            IOMX::buffer_id *buffer);
+            const sp<IHidlMemory> &hParams, IOMX::buffer_id *buffer);
 
     status_t useGraphicBuffer_l(
             OMX_U32 portIndex, const sp<GraphicBuffer> &graphicBuffer,
diff --git a/media/libstagefright/omx/Android.mk b/media/libstagefright/omx/Android.mk
index 9af0735..82b8143 100644
--- a/media/libstagefright/omx/Android.mk
+++ b/media/libstagefright/omx/Android.mk
@@ -17,7 +17,8 @@
 LOCAL_C_INCLUDES += \
         $(TOP)/frameworks/av/media/libstagefright \
         $(TOP)/frameworks/native/include/media/hardware \
-        $(TOP)/frameworks/native/include/media/openmax
+        $(TOP)/frameworks/native/include/media/openmax \
+        $(TOP)/system/libhidl/base/include \
 
 LOCAL_SHARED_LIBRARIES :=               \
         libbinder                       \
@@ -28,7 +29,10 @@
         libgui                          \
         libcutils                       \
         libstagefright_foundation       \
-        libdl
+        libdl                           \
+        libhidlbase                     \
+        libhidlmemory                   \
+        android.hidl.memory@1.0         \
 
 LOCAL_MODULE:= libstagefright_omx
 LOCAL_CFLAGS += -Werror -Wall
@@ -39,4 +43,5 @@
 
 ################################################################################
 
+include $(call all-makefiles-under,$(LOCAL_PATH)/hal)
 include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/media/libstagefright/omx/OMXNodeInstance.cpp b/media/libstagefright/omx/OMXNodeInstance.cpp
index bbfa48f..03aaa71 100644
--- a/media/libstagefright/omx/OMXNodeInstance.cpp
+++ b/media/libstagefright/omx/OMXNodeInstance.cpp
@@ -42,6 +42,8 @@
 #include <utils/NativeHandle.h>
 #include <media/OMXBuffer.h>
 
+#include <hidlmemory/mapping.h>
+
 static const OMX_U32 kPortIndexInput = 0;
 static const OMX_U32 kPortIndexOutput = 1;
 
@@ -106,8 +108,10 @@
 
 struct BufferMeta {
     explicit BufferMeta(
-            const sp<IMemory> &mem, OMX_U32 portIndex, bool copy, OMX_U8 *backup)
+            const sp<IMemory> &mem, const sp<IHidlMemory> &hidlMemory,
+            OMX_U32 portIndex, bool copy, OMX_U8 *backup)
         : mMem(mem),
+          mHidlMemory(hidlMemory),
           mCopyFromOmx(portIndex == kPortIndexOutput && copy),
           mCopyToOmx(portIndex == kPortIndexInput && copy),
           mPortIndex(portIndex),
@@ -129,6 +133,12 @@
           mBackup(NULL) {
     }
 
+    OMX_U8 *getPointer() {
+        return mMem.get() ? static_cast<OMX_U8*>(mMem->pointer()) :
+                mHidlMemory.get() ? static_cast<OMX_U8*>(
+                static_cast<void*>(mHidlMemory->getPointer())) : nullptr;
+    }
+
     void CopyFromOMX(const OMX_BUFFERHEADERTYPE *header) {
         if (!mCopyFromOmx) {
             return;
@@ -137,7 +147,7 @@
         // check component returns proper range
         sp<ABuffer> codec = getBuffer(header, true /* limit */);
 
-        memcpy((OMX_U8 *)mMem->pointer() + header->nOffset, codec->data(), codec->size());
+        memcpy(getPointer() + header->nOffset, codec->data(), codec->size());
     }
 
     void CopyToOMX(const OMX_BUFFERHEADERTYPE *header) {
@@ -146,7 +156,7 @@
         }
 
         memcpy(header->pBuffer + header->nOffset,
-                (const OMX_U8 *)mMem->pointer() + header->nOffset,
+                getPointer() + header->nOffset,
                 header->nFilledLen);
     }
 
@@ -184,6 +194,7 @@
     sp<GraphicBuffer> mGraphicBuffer;
     sp<NativeHandle> mNativeHandle;
     sp<IMemory> mMem;
+    sp<IHidlMemory> mHidlMemory;
     bool mCopyFromOmx;
     bool mCopyToOmx;
     OMX_U32 mPortIndex;
@@ -1021,29 +1032,49 @@
     Mutex::Autolock autoLock(mLock);
 
     switch (omxBuffer.mBufferType) {
-    case OMXBuffer::kBufferTypePreset:
-        return useBuffer_l(portIndex, NULL, buffer);
+        case OMXBuffer::kBufferTypePreset:
+            return useBuffer_l(portIndex, NULL, NULL, buffer);
 
-    case OMXBuffer::kBufferTypeSharedMem:
-        return useBuffer_l(portIndex, omxBuffer.mMem, buffer);
+        case OMXBuffer::kBufferTypeSharedMem:
+            return useBuffer_l(portIndex, omxBuffer.mMem, NULL, buffer);
 
-    case OMXBuffer::kBufferTypeANWBuffer:
-        return useGraphicBuffer_l(portIndex, omxBuffer.mGraphicBuffer, buffer);
+        case OMXBuffer::kBufferTypeANWBuffer:
+            return useGraphicBuffer_l(portIndex, omxBuffer.mGraphicBuffer, buffer);
 
-    default:
-        break;
+        case OMXBuffer::kBufferTypeHidlMemory: {
+                sp<IHidlMemory> hidlMemory = mapMemory(omxBuffer.mHidlMemory);
+                return useBuffer_l(portIndex, NULL, hidlMemory, buffer);
+            }
+        default:
+            break;
     }
 
     return BAD_VALUE;
 }
 
 status_t OMXNodeInstance::useBuffer_l(
-        OMX_U32 portIndex, const sp<IMemory> &params, IOMX::buffer_id *buffer) {
+        OMX_U32 portIndex, const sp<IMemory> &params,
+        const sp<IHidlMemory> &hParams, IOMX::buffer_id *buffer) {
     BufferMeta *buffer_meta;
     OMX_BUFFERHEADERTYPE *header;
     OMX_ERRORTYPE err = OMX_ErrorNone;
     bool isMetadata = mMetadataType[portIndex] != kMetadataBufferTypeInvalid;
 
+    size_t paramsSize;
+    void* paramsPointer;
+    if (params != NULL && hParams != NULL) {
+        return BAD_VALUE;
+    }
+    if (params != NULL) {
+        paramsPointer = params->pointer();
+        paramsSize = params->size();
+    } else if (hParams != NULL) {
+        paramsPointer = hParams->getPointer();
+        paramsSize = hParams->getSize();
+    } else {
+        paramsPointer = nullptr;
+    }
+
     OMX_U32 allottedSize;
     if (isMetadata) {
         if (mMetadataType[portIndex] == kMetadataBufferTypeGrallocSource) {
@@ -1057,11 +1088,11 @@
         }
     } else {
         // NULL params is allowed only in metadata mode.
-        if (params == NULL) {
+        if (paramsPointer == nullptr) {
             ALOGE("b/25884056");
             return BAD_VALUE;
         }
-        allottedSize = params->size();
+        allottedSize = paramsSize;
     }
 
     bool isOutputGraphicMetadata = (portIndex == kPortIndexOutput) &&
@@ -1077,7 +1108,7 @@
     if (!isOutputGraphicMetadata && (mQuirks & requiresAllocateBufferBit)) {
         // metadata buffers are not connected cross process; only copy if not meta.
         buffer_meta = new BufferMeta(
-                    params, portIndex, !isMetadata /* copy */, NULL /* data */);
+                    params, hParams, portIndex, !isMetadata /* copy */, NULL /* data */);
 
         err = OMX_AllocateBuffer(
                 mHandle, &header, portIndex, buffer_meta, allottedSize);
@@ -1085,7 +1116,7 @@
         if (err != OMX_ErrorNone) {
             CLOG_ERROR(allocateBuffer, err,
                     SIMPLE_BUFFER(portIndex, (size_t)allottedSize,
-                            params != NULL ? params->pointer() : NULL));
+                            paramsPointer));
         }
     } else {
         OMX_U8 *data = NULL;
@@ -1100,12 +1131,12 @@
             memset(data, 0, allottedSize);
 
             buffer_meta = new BufferMeta(
-                    params, portIndex, false /* copy */, data);
+                    params, hParams, portIndex, false /* copy */, data);
         } else {
             data = static_cast<OMX_U8 *>(params->pointer());
 
             buffer_meta = new BufferMeta(
-                    params, portIndex, false /* copy */, NULL);
+                    params, hParams, portIndex, false /* copy */, NULL);
         }
 
         err = OMX_UseBuffer(
@@ -1139,7 +1170,7 @@
     }
 
     CLOG_BUFFER(useBuffer, NEW_BUFFER_FMT(
-            *buffer, portIndex, "%u(%zu)@%p", allottedSize, params->size(), params->pointer()));
+            *buffer, portIndex, "%u(%zu)@%p", allottedSize, paramsSize, paramsPointer));
     return OK;
 }
 
@@ -1281,7 +1312,7 @@
         return BAD_VALUE;
     }
 
-    status_t err = useBuffer_l(portIndex, NULL, buffer);
+    status_t err = useBuffer_l(portIndex, NULL, NULL, buffer);
     if (err != OK) {
         return err;
     }
diff --git a/media/libstagefright/omx/hal/1.0/Android.mk b/media/libstagefright/omx/hal/1.0/Android.mk
index 1633486..c14e909 100644
--- a/media/libstagefright/omx/hal/1.0/Android.mk
+++ b/media/libstagefright/omx/hal/1.0/Android.mk
@@ -1,38 +1,3 @@
 LOCAL_PATH := $(call my-dir)
+include $(call all-makefiles-under,$(LOCAL_PATH))
 
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.media.omx@1.0-impl
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_SRC_FILES := \
-    WGraphicBufferSource.cpp \
-    WOmx.cpp \
-    WOmxBufferSource.cpp \
-    WOmxNode.cpp \
-    WOmxObserver.cpp \
-    Omx.cpp \
-    OmxNode.cpp \
-
-LOCAL_SHARED_LIBRARIES := \
-    libmedia \
-    libstagefright_foundation \
-    libstagefright_omx \
-    libui \
-    libhidlbase \
-    libhidltransport \
-    libhwbinder \
-    libutils \
-    libcutils \
-    libbinder \
-    android.hardware.media.omx@1.0 \
-    android.hardware.graphics.common@1.0 \
-    android.hardware.media@1.0 \
-    android.hidl.base@1.0 \
-
-LOCAL_C_INCLUDES += \
-        $(TOP) \
-        $(TOP)/frameworks/av/include/media \
-        $(TOP)/frameworks/av/media/libstagefright/include \
-        $(TOP)/frameworks/native/include/media/hardware \
-        $(TOP)/frameworks/native/include/media/openmax
-
-include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/omx/hal/1.0/Conversion.h b/media/libstagefright/omx/hal/1.0/Conversion.h
deleted file mode 100644
index d42e5bf..0000000
--- a/media/libstagefright/omx/hal/1.0/Conversion.h
+++ /dev/null
@@ -1,799 +0,0 @@
-#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
-#define ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
-
-#include <hidl/MQDescriptor.h>
-
-#include <unistd.h>
-#include <vector>
-#include <list>
-
-#include <frameworks/native/include/binder/Binder.h>
-#include <frameworks/native/include/binder/Status.h>
-
-#include <OMXFenceParcelable.h>
-#include <cutils/native_handle.h>
-
-#include <IOMX.h>
-#include <VideoAPI.h>
-#include <OMXBuffer.h>
-#include <android/IOMXBufferSource.h>
-#include <android/IGraphicBufferSource.h>
-
-#include <android/hardware/media/omx/1.0/types.h>
-#include <android/hardware/media/omx/1.0/IOmx.h>
-#include <android/hardware/media/omx/1.0/IOmxNode.h>
-#include <android/hardware/media/omx/1.0/IOmxBufferSource.h>
-#include <android/hardware/media/omx/1.0/IOmxObserver.h>
-#include <android/hardware/media/omx/1.0/IGraphicBufferSource.h>
-
-namespace android {
-namespace hardware {
-namespace media {
-namespace omx {
-namespace V1_0 {
-namespace implementation {
-
-using ::android::hardware::hidl_array;
-using ::android::hardware::hidl_string;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::sp;
-
-using ::android::hardware::hidl_handle;
-using ::android::String8;
-using ::android::OMXFenceParcelable;
-
-using ::android::hardware::media::omx::V1_0::Message;
-using ::android::omx_message;
-
-using ::android::hardware::media::omx::V1_0::ColorAspects;
-
-using ::android::hardware::graphics::common::V1_0::Dataspace;
-
-using ::android::hardware::graphics::common::V1_0::PixelFormat;
-
-using ::android::OMXBuffer;
-
-using ::android::hardware::media::omx::V1_0::IOmx;
-using ::android::IOMX;
-
-using ::android::hardware::media::omx::V1_0::IOmxNode;
-using ::android::IOMXNode;
-
-using ::android::hardware::media::omx::V1_0::IOmxObserver;
-using ::android::IOMXObserver;
-
-using ::android::hardware::media::omx::V1_0::IOmxBufferSource;
-using ::android::IOMXBufferSource;
-
-// native_handle_t helper functions.
-
-/**
- * \brief Take an fd and create a native handle containing only the given fd.
- * The created handle will need to be deleted manually with
- * `native_handle_delete()`.
- *
- * \param[in] fd The source file descriptor (of type `int`).
- * \return The create `native_handle_t*` that contains the given \p fd. If the
- * supplied \p fd is negative, the created native handle will contain no file
- * descriptors.
- *
- * If the native handle cannot be created, the return value will be
- * `nullptr`.
- *
- * This function does not duplicate the file descriptor.
- */
-inline native_handle_t* native_handle_create_from_fd(int fd) {
-    if (fd < 0) {
-        return native_handle_create(0, 0);
-    }
-    native_handle_t* nh = native_handle_create(1, 0);
-    if (nh == nullptr) {
-        return nullptr;
-    }
-    nh->data[0] = fd;
-    return nh;
-}
-
-/**
- * \brief Extract a file descriptor from a native handle.
- *
- * \param[in] nh The source `native_handle_t*`.
- * \param[in] index The index of the file descriptor in \p nh to read from. This
- * input has the default value of `0`.
- * \return The `index`-th file descriptor in \p nh. If \p nh does not have
- * enough file descriptors, the returned value will be `-1`.
- *
- * This function does not duplicate the file descriptor.
- */
-inline int native_handle_read_fd(native_handle_t const* nh, int index = 0) {
-    return ((nh == nullptr) || (nh->numFds == 0) ||
-            (nh->numFds <= index) || (index < 0)) ?
-            -1 : nh->data[index];
-}
-
-/**
- * Conversion functions
- * ====================
- *
- * There are two main directions of conversion:
- * - `inTargetType(...)`: Create a wrapper whose lifetime depends on the
- *   input. The wrapper has type `TargetType`.
- * - `toTargetType(...)`: Create a standalone object of type `TargetType` that
- *   corresponds to the input. The lifetime of the output does not depend on the
- *   lifetime of the input.
- * - `wrapIn(TargetType*, ...)`: Same as `inTargetType()`, but for `TargetType`
- *   that cannot be copied and/or moved efficiently, or when there are multiple
- *   output arguments.
- * - `convertTo(TargetType*, ...)`: Same as `toTargetType()`, but for
- *   `TargetType` that cannot be copied and/or moved efficiently, or when there
- *   are multiple output arguments.
- *
- * `wrapIn()` and `convertTo()` functions will take output arguments before
- * input arguments. Some of these functions might return a value to indicate
- * success or error.
- *
- * In converting or wrapping something as a Treble type that contains a
- * `hidl_handle`, `native_handle_t*` will need to be created and returned as
- * an additional output argument, hence only `wrapIn()` or `convertTo()` would
- * be available. The caller must call `native_handle_delete()` to deallocate the
- * returned native handle when it is no longer needed.
- *
- * For types that contain file descriptors, `inTargetType()` and `wrapAs()` do
- * not perform duplication of file descriptors, while `toTargetType()` and
- * `convertTo()` do.
- */
-
-/**
- * \brief Convert `binder::Status` to `Return<void>`.
- *
- * \param[in] l The source `binder::Status`.
- * \return The corresponding `Return<void>`.
- */
-// convert: ::android::binder::Status -> Return<void>
-inline Return<void> toHardwareStatus(
-        ::android::binder::Status const& l) {
-    if (l.exceptionCode() == ::android::binder::Status::EX_SERVICE_SPECIFIC) {
-        return ::android::hardware::Status::fromServiceSpecificError(
-                l.serviceSpecificErrorCode(),
-                l.exceptionMessage());
-    }
-    return ::android::hardware::Status::fromExceptionCode(
-            l.exceptionCode(),
-            l.exceptionMessage());
-}
-
-/**
- * \brief Convert `Return<void>` to `binder::Status`.
- *
- * \param[in] t The source `Return<void>`.
- * \return The corresponding `binder::Status`.
- */
-// convert: Return<void> -> ::android::binder::Status
-inline ::android::binder::Status toBinderStatus(
-        Return<void> const& t) {
-    return ::android::binder::Status::fromExceptionCode(
-            t.isOk() ? OK : UNKNOWN_ERROR,
-            t.description().c_str());
-}
-
-/**
- * \brief Convert `Return<Status>` to `status_t`. This is for legacy binder
- * calls.
- *
- * \param[in] t The source `Return<Status>`.
- * \return The corresponding `status_t`.
- *
- * This function first check if \p t has a transport error. If it does, then the
- * return value is the transport error code. Otherwise, the return value is
- * converted from `Status` contained inside \p t.
- *
- * Note:
- * - This `Status` is omx-specific. It is defined in `types.hal`.
- * - The name of this function is not `convert`.
- */
-// convert: Status -> status_t
-inline status_t toStatusT(Return<Status> const& t) {
-    return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) : UNKNOWN_ERROR;
-}
-
-/**
- * \brief Convert `Return<void>` to `status_t`. This is for legacy binder calls.
- *
- * \param[in] t The source `Return<void>`.
- * \return The corresponding `status_t`.
- */
-// convert: Return<void> -> status_t
-inline status_t toStatusT(Return<void> const& t) {
-    return t.isOk() ? OK : UNKNOWN_ERROR;
-}
-
-/**
- * \brief Convert `Status` to `status_t`. This is for legacy binder calls.
- *
- * \param[in] t The source `Status`.
- * \return the corresponding `status_t`.
- */
-// convert: Status -> status_t
-inline status_t toStatusT(Status const& t) {
-    return static_cast<status_t>(t);
-}
-
-/**
- * \brief Convert `status_t` to `Status`.
- *
- * \param[in] l The source `status_t`.
- * \return The corresponding `Status`.
- */
-// convert: status_t -> Status
-inline Status toStatus(status_t l) {
-    return static_cast<Status>(l);
-}
-
-/**
- * \brief Wrap `native_handle_t*` in `hidl_handle`.
- *
- * \param[in] nh The source `native_handle_t*`.
- * \return The `hidl_handle` that points to \p nh.
- */
-// wrap: native_handle_t* -> hidl_handle
-inline hidl_handle inHidlHandle(native_handle_t const* nh) {
-    return hidl_handle(nh);
-}
-
-/**
- * \brief Wrap an `omx_message` and construct the corresponding `Message`.
- *
- * \param[out] t The wrapper of type `Message`.
- * \param[out] nh The native_handle_t referred to by `t->fence`.
- * \param[in] l The source `omx_message`.
- * \return `true` if the wrapping is successful; `false` otherwise.
- *
- * Upon success, \p nh will be created to hold the file descriptor stored in
- * `l.fenceFd`, and `t->fence` will point to \p nh. \p nh will need to be
- * destroyed manually by `native_handle_delete()` when \p t is no longer needed.
- *
- * Upon failure, \p nh will not be created and will not need to be deleted. \p t
- * will be invalid.
- */
-// wrap, omx_message -> Message, native_handle_t*
-inline bool wrapAs(Message* t, native_handle_t** nh, omx_message const& l) {
-    *nh = native_handle_create_from_fd(l.fenceFd);
-    if (!*nh) {
-        return false;
-    }
-    t->fence = inHidlHandle(*nh);
-    switch (l.type) {
-        case omx_message::EVENT:
-            t->type = Message::Type::EVENT;
-            t->data.eventData.data1 = l.u.event_data.data1;
-            t->data.eventData.data2 = l.u.event_data.data2;
-            t->data.eventData.data3 = l.u.event_data.data3;
-            t->data.eventData.data4 = l.u.event_data.data4;
-            break;
-        case omx_message::EMPTY_BUFFER_DONE:
-            t->type = Message::Type::EMPTY_BUFFER_DONE;
-            t->data.bufferData.buffer = l.u.buffer_data.buffer;
-            break;
-        case omx_message::FILL_BUFFER_DONE:
-            t->type = Message::Type::FILL_BUFFER_DONE;
-            t->data.extendedBufferData.buffer = l.u.extended_buffer_data.buffer;
-            t->data.extendedBufferData.rangeOffset = l.u.extended_buffer_data.range_offset;
-            t->data.extendedBufferData.rangeLength = l.u.extended_buffer_data.range_length;
-            t->data.extendedBufferData.flags = l.u.extended_buffer_data.flags;
-            t->data.extendedBufferData.timestampUs = l.u.extended_buffer_data.timestamp;
-            break;
-        case omx_message::FRAME_RENDERED:
-            t->type = Message::Type::FRAME_RENDERED;
-            t->data.renderData.timestampUs = l.u.render_data.timestamp;
-            t->data.renderData.systemTimeNs = l.u.render_data.nanoTime;
-            break;
-        default:
-            native_handle_delete(*nh);
-            return false;
-    }
-    return true;
-}
-
-/**
- * \brief Wrap a `Message` inside an `omx_message`.
- *
- * \param[out] l The wrapper of type `omx_message`.
- * \param[in] t The source `Message`.
- * \return `true` if the wrapping is successful; `false` otherwise.
- */
-// wrap: Message -> omx_message
-inline bool wrapAs(omx_message* l, Message const& t) {
-    l->fenceFd = native_handle_read_fd(t.fence);
-    switch (t.type) {
-        case Message::Type::EVENT:
-            l->type = omx_message::EVENT;
-            l->u.event_data.data1 = t.data.eventData.data1;
-            l->u.event_data.data2 = t.data.eventData.data2;
-            l->u.event_data.data3 = t.data.eventData.data3;
-            l->u.event_data.data4 = t.data.eventData.data4;
-            break;
-        case Message::Type::EMPTY_BUFFER_DONE:
-            l->type = omx_message::EMPTY_BUFFER_DONE;
-            l->u.buffer_data.buffer = t.data.bufferData.buffer;
-            break;
-        case Message::Type::FILL_BUFFER_DONE:
-            l->type = omx_message::FILL_BUFFER_DONE;
-            l->u.extended_buffer_data.buffer = t.data.extendedBufferData.buffer;
-            l->u.extended_buffer_data.range_offset = t.data.extendedBufferData.rangeOffset;
-            l->u.extended_buffer_data.range_length = t.data.extendedBufferData.rangeLength;
-            l->u.extended_buffer_data.flags = t.data.extendedBufferData.flags;
-            l->u.extended_buffer_data.timestamp = t.data.extendedBufferData.timestampUs;
-            break;
-        case Message::Type::FRAME_RENDERED:
-            l->type = omx_message::FRAME_RENDERED;
-            l->u.render_data.timestamp = t.data.renderData.timestampUs;
-            l->u.render_data.nanoTime = t.data.renderData.systemTimeNs;
-            break;
-        default:
-            return false;
-    }
-    return true;
-}
-
-/**
- * \brief Similar to `wrapTo(omx_message*, Message const&)`, but the output will
- * have an extended lifetime.
- *
- * \param[out] l The output `omx_message`.
- * \param[in] t The source `Message`.
- * \return `true` if the conversion is successful; `false` otherwise.
- *
- * This function calls `wrapto()`, then attempts to clone the file descriptor
- * for the fence if it is not `-1`. If the clone cannot be made, `false` will be
- * returned.
- */
-// convert: Message -> omx_message
-inline bool convertTo(omx_message* l, Message const& t) {
-    if (!wrapAs(l, t)) {
-        return false;
-    }
-    if (l->fenceFd == -1) {
-        return true;
-    }
-    l->fenceFd = dup(l->fenceFd);
-    return l->fenceFd != -1;
-}
-
-/**
- * \brief Wrap an `OMXFenceParcelable` inside a `hidl_handle`.
- *
- * \param[out] t The wrapper of type `hidl_handle`.
- * \param[out] nh The native handle created to hold the file descriptor inside
- * \p l.
- * \param[in] l The source `OMXFenceParcelable`, which essentially contains one
- * file descriptor.
- * \return `true` if \p t and \p nh are successfully created to wrap around \p
- * l; `false` otherwise.
- *
- * On success, \p nh needs to be deleted by the caller with
- * `native_handle_delete()` after \p t and \p nh are no longer needed.
- *
- * On failure, \p nh will not need to be deleted, and \p t will hold an invalid
- * value.
- */
-// wrap: OMXFenceParcelable -> hidl_handle, native_handle_t*
-inline bool wrapAs(hidl_handle* t, native_handle_t** nh,
-        OMXFenceParcelable const& l) {
-    *nh = native_handle_create_from_fd(l.get());
-    if (!*nh) {
-        return false;
-    }
-    *t = *nh;
-    return true;
-}
-
-/**
- * \brief Wrap a `hidl_handle` inside an `OMXFenceParcelable`.
- *
- * \param[out] l The wrapper of type `OMXFenceParcelable`.
- * \param[in] t The source `hidl_handle`.
- */
-// wrap: hidl_handle -> OMXFenceParcelable
-inline void wrapAs(OMXFenceParcelable* l, hidl_handle const& t) {
-    l->mFenceFd = native_handle_read_fd(t);
-}
-
-/**
- * \brief Convert a `hidl_handle` to `OMXFenceParcelable`. If `hidl_handle`
- * contains file descriptors, the first file descriptor will be duplicated and
- * stored in the output `OMXFenceParcelable`.
- *
- * \param[out] l The output `OMXFenceParcelable`.
- * \param[in] t The input `hidl_handle`.
- * \return `false` if \p t contains a valid file descriptor but duplication
- * fails; `true` otherwise.
- */
-// convert: hidl_handle -> OMXFenceParcelable
-inline bool convertTo(OMXFenceParcelable* l, hidl_handle const& t) {
-    int fd = native_handle_read_fd(t);
-    if (fd != -1) {
-        fd = dup(fd);
-        if (fd == -1) {
-            return false;
-        }
-    }
-    l->mFenceFd = fd;
-    return true;
-}
-
-/**
- * \brief Convert `::android::ColorAspects` to `ColorAspects`.
- *
- * \param[in] l The source `::android::ColorAspects`.
- * \return The corresponding `ColorAspects`.
- */
-// convert: ::android::ColorAspects -> ColorAspects
-inline ColorAspects toHardwareColorAspects(::android::ColorAspects const& l) {
-    return ColorAspects{
-            static_cast<ColorAspects::Range>(l.mRange),
-            static_cast<ColorAspects::Primaries>(l.mPrimaries),
-            static_cast<ColorAspects::Transfer>(l.mTransfer),
-            static_cast<ColorAspects::MatrixCoeffs>(l.mMatrixCoeffs)};
-}
-
-/**
- * \brief Convert `int32_t` to `ColorAspects`.
- *
- * \param[in] l The source `int32_t`.
- * \return The corresponding `ColorAspects`.
- */
-// convert: int32_t -> ColorAspects
-inline ColorAspects toHardwareColorAspects(int32_t l) {
-    return ColorAspects{
-            static_cast<ColorAspects::Range>((l >> 24) & 0xFF),
-            static_cast<ColorAspects::Primaries>((l >> 16) & 0xFF),
-            static_cast<ColorAspects::Transfer>(l & 0xFF),
-            static_cast<ColorAspects::MatrixCoeffs>((l >> 8) & 0xFF)};
-}
-
-/**
- * \brief Convert `ColorAspects` to `::android::ColorAspects`.
- *
- * \param[in] t The source `ColorAspects`.
- * \return The corresponding `::android::ColorAspects`.
- */
-// convert: ColorAspects -> ::android::ColorAspects
-inline int32_t toCompactColorAspects(ColorAspects const& t) {
-    return static_cast<int32_t>(
-            (static_cast<uint32_t>(t.range) << 24) |
-            (static_cast<uint32_t>(t.primaries) << 16) |
-            (static_cast<uint32_t>(t.transfer)) |
-            (static_cast<uint32_t>(t.matrixCoeffs) << 8));
-}
-
-/**
- * \brief Convert `int32_t` to `Dataspace`.
- *
- * \param[in] l The source `int32_t`.
- * \result The corresponding `Dataspace`.
- */
-// convert: int32_t -> Dataspace
-inline Dataspace toHardwareDataspace(int32_t l) {
-    return static_cast<Dataspace>(l);
-}
-
-/**
- * \brief Convert `Dataspace` to `int32_t`.
- *
- * \param[in] t The source `Dataspace`.
- * \result The corresponding `int32_t`.
- */
-// convert: Dataspace -> int32_t
-inline int32_t toRawDataspace(Dataspace const& t) {
-    return static_cast<int32_t>(t);
-}
-
-/**
- * \brief Wrap an opaque buffer inside a `hidl_vec<uint8_t>`.
- *
- * \param[in] l The pointer to the beginning of the opaque buffer.
- * \param[in] size The size of the buffer.
- * \return A `hidl_vec<uint8_t>` that points to the buffer.
- */
-// wrap: void*, size_t -> hidl_vec<uint8_t>
-inline hidl_vec<uint8_t> inHidlBytes(void const* l, size_t size) {
-    hidl_vec<uint8_t> t;
-    t.setToExternal(static_cast<uint8_t*>(const_cast<void*>(l)), size, false);
-    return t;
-}
-
-/**
- * \brief Create a `hidl_vec<uint8_t>` that is a copy of an opaque buffer.
- *
- * \param[in] l The pointer to the beginning of the opaque buffer.
- * \param[in] size The size of the buffer.
- * \return A `hidl_vec<uint8_t>` that is a copy of the input buffer.
- */
-// convert: void*, size_t -> hidl_vec<uint8_t>
-inline hidl_vec<uint8_t> toHidlBytes(void const* l, size_t size) {
-    hidl_vec<uint8_t> t;
-    t.resize(size);
-    uint8_t const* src = static_cast<uint8_t const*>(l);
-    std::copy(src, src + size, t.data());
-    return t;
-}
-
-/**
- * \brief Wrap `OMXBuffer` in `CodecBuffer`.
- *
- * \param[out] t The wrapper of type `CodecBuffer`.
- * \param[in] l The source `OMXBuffer`.
- * \return `true` if the wrapping is successful; `false` otherwise.
- *
- * TODO: Use HIDL's shared memory.
- */
-// wrap: OMXBuffer -> CodecBuffer
-inline bool wrapAs(CodecBuffer* t, OMXBuffer const& l) {
-    switch (l.mBufferType) {
-        case OMXBuffer::kBufferTypeInvalid: {
-            t->type = CodecBuffer::Type::INVALID;
-            return true;
-        }
-        case OMXBuffer::kBufferTypePreset: {
-            t->type = CodecBuffer::Type::PRESET;
-            t->attr.preset.rangeLength = static_cast<uint32_t>(l.mRangeLength);
-            return true;
-        }
-        case OMXBuffer::kBufferTypeSharedMem: {
-            t->type = CodecBuffer::Type::SHARED_MEM;
-/* TODO: Use HIDL's shared memory.
-            ssize_t offset;
-            size_t size;
-            native_handle_t* handle;
-            sp<IMemoryHeap> memoryHeap = l.mMem->getMemory(&offset, &size);
-            t->attr.sharedMem.size = static_cast<uint32_t>(size);
-            t->attr.sharedMem.flags = static_cast<uint32_t>(memoryHeap->getFlags());
-            t->attr.sharedMem.offset = static_cast<uint32_t>(offset);
-            if (!convertFd2Handle(memoryHeap->getHeapID(), nh)) {
-                return false;
-            }
-            t->nativeHandle = hidl_handle(*nh);
-            return true;*/
-            return false;
-        }
-        case OMXBuffer::kBufferTypeANWBuffer: {
-            t->type = CodecBuffer::Type::ANW_BUFFER;
-            t->attr.anwBuffer.width = l.mGraphicBuffer->getWidth();
-            t->attr.anwBuffer.height = l.mGraphicBuffer->getHeight();
-            t->attr.anwBuffer.stride = l.mGraphicBuffer->getStride();
-            t->attr.anwBuffer.format = static_cast<PixelFormat>(l.mGraphicBuffer->getPixelFormat());
-            t->attr.anwBuffer.layerCount = l.mGraphicBuffer->getLayerCount();
-            t->attr.anwBuffer.usage = l.mGraphicBuffer->getUsage();
-            t->nativeHandle = hidl_handle(l.mGraphicBuffer->handle);
-            return true;
-        }
-        case OMXBuffer::kBufferTypeNativeHandle: {
-            t->type = CodecBuffer::Type::NATIVE_HANDLE;
-            t->nativeHandle = hidl_handle(l.mNativeHandle->handle());
-            return true;
-        }
-    }
-    return false;
-}
-
-/**
- * \brief Convert `CodecBuffer` to `OMXBuffer`.
- *
- * \param[out] l The destination `OMXBuffer`.
- * \param[in] t The source `CodecBuffer`.
- * \return `true` if successful; `false` otherwise.
- *
- * TODO: Use HIDL's shared memory.
- */
-// convert: CodecBuffer -> OMXBuffer
-inline bool convertTo(OMXBuffer* l, CodecBuffer const& t) {
-    switch (t.type) {
-        case CodecBuffer::Type::INVALID: {
-            *l = OMXBuffer();
-            return true;
-        }
-        case CodecBuffer::Type::PRESET: {
-            *l = OMXBuffer(t.attr.preset.rangeLength);
-            return true;
-        }
-        case CodecBuffer::Type::SHARED_MEM: {
-/* TODO: Use HIDL's memory.
-            *l = OMXBuffer();
-            return true;*/
-            return false;
-        }
-        case CodecBuffer::Type::ANW_BUFFER: {
-            *l = OMXBuffer(sp<GraphicBuffer>(new GraphicBuffer(
-                    t.attr.anwBuffer.width,
-                    t.attr.anwBuffer.height,
-                    static_cast<::android::PixelFormat>(
-                            t.attr.anwBuffer.format),
-                    t.attr.anwBuffer.layerCount,
-                    t.attr.anwBuffer.usage,
-                    t.attr.anwBuffer.stride,
-                    native_handle_clone(t.nativeHandle),
-                    true)));
-            return true;
-        }
-        case CodecBuffer::Type::NATIVE_HANDLE: {
-            *l = OMXBuffer(NativeHandle::create(
-                    native_handle_clone(t.nativeHandle), true));
-            return true;
-        }
-    }
-    return false;
-}
-
-/**
- * \brief Convert `IOMX::ComponentInfo` to `IOmx::ComponentInfo`.
- *
- * \param[out] t The destination `IOmx::ComponentInfo`.
- * \param[in] l The source `IOMX::ComponentInfo`.
- */
-// convert: IOMX::ComponentInfo -> IOmx::ComponentInfo
-inline bool convertTo(IOmx::ComponentInfo* t, IOMX::ComponentInfo const& l) {
-    t->mName = l.mName.string();
-    t->mRoles.resize(l.mRoles.size());
-    size_t i = 0;
-    for (auto& role : l.mRoles) {
-        t->mRoles[i++] = role.string();
-    }
-    return true;
-}
-
-/**
- * \brief Convert `IOmx::ComponentInfo` to `IOMX::ComponentInfo`.
- *
- * \param[out] l The destination `IOMX::ComponentInfo`.
- * \param[in] t The source `IOmx::ComponentInfo`.
- */
-// convert: IOmx::ComponentInfo -> IOMX::ComponentInfo
-inline bool convertTo(IOMX::ComponentInfo* l, IOmx::ComponentInfo const& t) {
-    l->mName = t.mName.c_str();
-    l->mRoles.clear();
-    for (size_t i = 0; i < t.mRoles.size(); ++i) {
-        l->mRoles.push_back(String8(t.mRoles[i].c_str()));
-    }
-    return true;
-}
-
-/**
- * \brief Convert `OMX_BOOL` to `bool`.
- *
- * \param[in] l The source `OMX_BOOL`.
- * \return The destination `bool`.
- */
-// convert: OMX_BOOL -> bool
-inline bool toRawBool(OMX_BOOL l) {
-    return l == OMX_FALSE ? false : true;
-}
-
-/**
- * \brief Convert `bool` to `OMX_BOOL`.
- *
- * \param[in] t The source `bool`.
- * \return The destination `OMX_BOOL`.
- */
-// convert: bool -> OMX_BOOL
-inline OMX_BOOL toEnumBool(bool t) {
-    return t ? OMX_TRUE : OMX_FALSE;
-}
-
-/**
- * \brief Convert `OMX_COMMANDTYPE` to `uint32_t`.
- *
- * \param[in] l The source `OMX_COMMANDTYPE`.
- * \return The underlying value of type `uint32_t`.
- *
- * `OMX_COMMANDTYPE` is an enum type whose underlying type is `uint32_t`.
- */
-// convert: OMX_COMMANDTYPE -> uint32_t
-inline uint32_t toRawCommandType(OMX_COMMANDTYPE l) {
-    return static_cast<uint32_t>(l);
-}
-
-/**
- * \brief Convert `uint32_t` to `OMX_COMMANDTYPE`.
- *
- * \param[in] t The source `uint32_t`.
- * \return The corresponding enum value of type `OMX_COMMANDTYPE`.
- *
- * `OMX_COMMANDTYPE` is an enum type whose underlying type is `uint32_t`.
- */
-// convert: uint32_t -> OMX_COMMANDTYPE
-inline OMX_COMMANDTYPE toEnumCommandType(uint32_t t) {
-    return static_cast<OMX_COMMANDTYPE>(t);
-}
-
-/**
- * \brief Convert `OMX_INDEXTYPE` to `uint32_t`.
- *
- * \param[in] l The source `OMX_INDEXTYPE`.
- * \return The underlying value of type `uint32_t`.
- *
- * `OMX_INDEXTYPE` is an enum type whose underlying type is `uint32_t`.
- */
-// convert: OMX_INDEXTYPE -> uint32_t
-inline uint32_t toRawIndexType(OMX_INDEXTYPE l) {
-    return static_cast<uint32_t>(l);
-}
-
-/**
- * \brief Convert `uint32_t` to `OMX_INDEXTYPE`.
- *
- * \param[in] t The source `uint32_t`.
- * \return The corresponding enum value of type `OMX_INDEXTYPE`.
- *
- * `OMX_INDEXTYPE` is an enum type whose underlying type is `uint32_t`.
- */
-// convert: uint32_t -> OMX_INDEXTYPE
-inline OMX_INDEXTYPE toEnumIndexType(uint32_t t) {
-    return static_cast<OMX_INDEXTYPE>(t);
-}
-
-/**
- * \brief Convert `IOMX::PortMode` to `PortMode`.
- *
- * \param[in] l The source `IOMX::PortMode`.
- * \return The destination `PortMode`.
- */
-// convert: IOMX::PortMode -> PortMode
-inline PortMode toHardwarePortMode(IOMX::PortMode l) {
-    return static_cast<PortMode>(l);
-}
-
-/**
- * \brief Convert `PortMode` to `IOMX::PortMode`.
- *
- * \param[in] t The source `PortMode`.
- * \return The destination `IOMX::PortMode`.
- */
-// convert: PortMode -> IOMX::PortMode
-inline IOMX::PortMode toIOMXPortMode(PortMode t) {
-    return static_cast<IOMX::PortMode>(t);
-}
-
-/**
- * \brief Convert `OMX_TICKS` to `uint64_t`.
- *
- * \param[in] l The source `OMX_TICKS`.
- * \return The destination `uint64_t`.
- */
-// convert: OMX_TICKS -> uint64_t
-inline uint64_t toRawTicks(OMX_TICKS l) {
-#ifndef OMX_SKIP64BIT
-    return static_cast<uint64_t>(l);
-#else
-    return static_cast<uint64_t>(l.nLowPart) |
-            static_cast<uint64_t>(l.nHighPart << 32);
-#endif
-}
-
-/**
- * \brief Convert 'uint64_t` to `OMX_TICKS`.
- *
- * \param[in] l The source `uint64_t`.
- * \return The destination `OMX_TICKS`.
- */
-// convert: uint64_t -> OMX_TICKS
-inline OMX_TICKS toOMXTicks(uint64_t t) {
-#ifndef OMX_SKIP64BIT
-    return static_cast<OMX_TICKS>(t);
-#else
-    return OMX_TICKS{
-            static_cast<uint32_t>(t & 0xFFFFFFFF),
-            static_cast<uint32_t>(t >> 32)};
-#endif
-}
-
-
-}  // namespace implementation
-}  // namespace V1_0
-}  // namespace omx
-}  // namespace media
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
diff --git a/media/libstagefright/omx/hal/1.0/Omx.cpp b/media/libstagefright/omx/hal/1.0/Omx.cpp
deleted file mode 100644
index cb23191..0000000
--- a/media/libstagefright/omx/hal/1.0/Omx.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-#include "Omx.h"
-
-namespace android {
-namespace hardware {
-namespace media {
-namespace omx {
-namespace V1_0 {
-namespace implementation {
-
-// Methods from ::android::hardware::media::omx::V1_0::IOmx follow.
-Return<void> Omx::listNodes(listNodes_cb _hidl_cb) {
-    // TODO implement
-    return Void();
-}
-
-Return<void> Omx::allocateNode(const hidl_string& name, const sp<IOmxObserver>& observer, allocateNode_cb _hidl_cb) {
-    // TODO implement
-    return Void();
-}
-
-
-// Methods from ::android::hidl::base::V1_0::IBase follow.
-
-IOmx* HIDL_FETCH_IOmx(const char* /* name */) {
-    return new Omx();
-}
-
-}  // namespace implementation
-}  // namespace V1_0
-}  // namespace omx
-}  // namespace media
-}  // namespace hardware
-}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/Omx.h b/media/libstagefright/omx/hal/1.0/Omx.h
deleted file mode 100644
index 5d06444..0000000
--- a/media/libstagefright/omx/hal/1.0/Omx.h
+++ /dev/null
@@ -1,48 +0,0 @@
-#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMX_H
-#define ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMX_H
-
-#include <android/hardware/media/omx/1.0/IOmx.h>
-#include <hidl/MQDescriptor.h>
-#include <hidl/Status.h>
-
-#include <IOMX.h>
-
-namespace android {
-namespace hardware {
-namespace media {
-namespace omx {
-namespace V1_0 {
-namespace implementation {
-
-using ::android::hardware::media::omx::V1_0::IOmx;
-using ::android::hardware::media::omx::V1_0::IOmxNode;
-using ::android::hardware::media::omx::V1_0::IOmxObserver;
-using ::android::hardware::media::omx::V1_0::Status;
-using ::android::hidl::base::V1_0::IBase;
-using ::android::hardware::hidl_array;
-using ::android::hardware::hidl_memory;
-using ::android::hardware::hidl_string;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::sp;
-
-struct Omx : public IOmx {
-    // Methods from ::android::hardware::media::omx::V1_0::IOmx follow.
-    Return<void> listNodes(listNodes_cb _hidl_cb) override;
-    Return<void> allocateNode(const hidl_string& name, const sp<IOmxObserver>& observer, allocateNode_cb _hidl_cb) override;
-
-    // Methods from ::android::hidl::base::V1_0::IBase follow.
-
-};
-
-extern "C" IOmx* HIDL_FETCH_IOmx(const char* name);
-
-}  // namespace implementation
-}  // namespace V1_0
-}  // namespace omx
-}  // namespace media
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMX_H
diff --git a/media/libstagefright/omx/hal/1.0/WOmx.cpp b/media/libstagefright/omx/hal/1.0/WOmx.cpp
deleted file mode 100644
index 25bcfe9..0000000
--- a/media/libstagefright/omx/hal/1.0/WOmx.cpp
+++ /dev/null
@@ -1,95 +0,0 @@
-#include "WOmx.h"
-#include "WOmxNode.h"
-#include "WOmxObserver.h"
-#include "Conversion.h"
-
-namespace android {
-namespace hardware {
-namespace media {
-namespace omx {
-namespace V1_0 {
-namespace implementation {
-
-// LWOmx
-LWOmx::LWOmx(sp<IOmx> const& base) : mBase(base) {
-}
-
-status_t LWOmx::listNodes(List<IOMX::ComponentInfo>* list) {
-    status_t fnStatus;
-    status_t transStatus = toStatusT(mBase->listNodes(
-            [&fnStatus, list](
-                    Status status,
-                    hidl_vec<IOmx::ComponentInfo> const& nodeList) {
-                fnStatus = toStatusT(status);
-                list->clear();
-                for (size_t i = 0; i < nodeList.size(); ++i) {
-                    auto newInfo = list->insert(
-                            list->end(), IOMX::ComponentInfo());
-                    convertTo(&*newInfo, nodeList[i]);
-                }
-            }));
-    return transStatus == NO_ERROR ? fnStatus : transStatus;
-}
-
-status_t LWOmx::allocateNode(
-        char const* name,
-        sp<IOMXObserver> const& observer,
-        sp<IOMXNode>* omxNode) {
-    status_t fnStatus;
-    status_t transStatus = toStatusT(mBase->allocateNode(
-            name, new TWOmxObserver(observer),
-            [&fnStatus, omxNode](Status status, sp<IOmxNode> const& node) {
-                fnStatus = toStatusT(status);
-                *omxNode = new LWOmxNode(node);
-            }));
-    return transStatus == NO_ERROR ? fnStatus : transStatus;
-}
-
-status_t LWOmx::createInputSurface(
-        sp<::android::IGraphicBufferProducer>* /* bufferProducer */,
-        sp<::android::IGraphicBufferSource>* /* bufferSource */) {
-    // TODO: Implement.
-    return INVALID_OPERATION;
-}
-
-::android::IBinder* LWOmx::onAsBinder() {
-    return nullptr;
-}
-
-// TWOmx
-TWOmx::TWOmx(sp<IOMX> const& base) : mBase(base) {
-}
-
-Return<void> TWOmx::listNodes(listNodes_cb _hidl_cb) {
-    List<IOMX::ComponentInfo> lList;
-    Status status = toStatus(mBase->listNodes(&lList));
-
-    hidl_vec<IOmx::ComponentInfo> tList;
-    tList.resize(lList.size());
-    size_t i = 0;
-    for (auto const& lInfo : lList) {
-        convertTo(&(tList[i++]), lInfo);
-    }
-    _hidl_cb(status, tList);
-    return Void();
-}
-
-Return<void> TWOmx::allocateNode(
-        const hidl_string& name,
-        const sp<IOmxObserver>& observer,
-        allocateNode_cb _hidl_cb) {
-    sp<IOMXNode> omxNode;
-    Status status = toStatus(mBase->allocateNode(
-            name, new LWOmxObserver(observer), &omxNode));
-    _hidl_cb(status, new TWOmxNode(omxNode));
-    return Void();
-}
-
-// TODO: Add createInputSurface().
-
-}  // namespace implementation
-}  // namespace V1_0
-}  // namespace omx
-}  // namespace media
-}  // namespace hardware
-}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/impl/Android.mk b/media/libstagefright/omx/hal/1.0/impl/Android.mk
new file mode 100644
index 0000000..ccd19d8
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/Android.mk
@@ -0,0 +1,45 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.media.omx@1.0-impl
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := \
+    WGraphicBufferSource.cpp \
+    WOmx.cpp \
+    WOmxBufferProducer.cpp \
+    WOmxBufferSource.cpp \
+    WOmxNode.cpp \
+    WOmxObserver.cpp \
+    WOmxProducerListener.cpp \
+    Omx.cpp \
+    OmxNode.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+    libmedia \
+    libstagefright_foundation \
+    libstagefright_omx \
+    libui \
+    libgui \
+    libhidlbase \
+    libhidltransport \
+    libhwbinder \
+    libhidlmemory \
+    libutils \
+    libcutils \
+    libbinder \
+    liblog \
+    android.hardware.media.omx@1.0 \
+    android.hardware.graphics.common@1.0 \
+    android.hardware.media@1.0 \
+    android.hidl.base@1.0 \
+
+LOCAL_C_INCLUDES += \
+        $(TOP) \
+        $(TOP)/frameworks/av/include/media \
+        $(TOP)/frameworks/av/media/libstagefright/include \
+        $(TOP)/frameworks/av/media/libstagefright/omx \
+        $(TOP)/frameworks/native/include/media/hardware \
+        $(TOP)/frameworks/native/include/media/openmax \
+        $(TOP)/frameworks/native/include \
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/omx/hal/1.0/impl/Conversion.h b/media/libstagefright/omx/hal/1.0/impl/Conversion.h
new file mode 100644
index 0000000..9cfb4f2
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/Conversion.h
@@ -0,0 +1,2154 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
+
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <hidlmemory/mapping.h>
+#include <android/hidl/memory/1.0/IMemory.h>
+
+#include <unistd.h>
+#include <vector>
+#include <list>
+
+#include <binder/Binder.h>
+#include <binder/Status.h>
+#include <ui/FenceTime.h>
+
+#include <OMXFenceParcelable.h>
+#include <cutils/native_handle.h>
+#include <gui/IGraphicBufferProducer.h>
+
+#include <IOMX.h>
+#include <VideoAPI.h>
+#include <OMXBuffer.h>
+#include <android/IOMXBufferSource.h>
+#include <android/IGraphicBufferSource.h>
+
+#include <android/hardware/media/omx/1.0/types.h>
+#include <android/hardware/media/omx/1.0/IOmx.h>
+#include <android/hardware/media/omx/1.0/IOmxNode.h>
+#include <android/hardware/media/omx/1.0/IOmxBufferProducer.h>
+#include <android/hardware/media/omx/1.0/IOmxBufferSource.h>
+#include <android/hardware/media/omx/1.0/IOmxObserver.h>
+#include <android/hardware/media/omx/1.0/IOmxProducerListener.h>
+#include <android/hardware/media/omx/1.0/IGraphicBufferSource.h>
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_handle;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+using ::android::String8;
+using ::android::OMXFenceParcelable;
+
+using ::android::hardware::media::omx::V1_0::Message;
+using ::android::omx_message;
+
+using ::android::hardware::media::omx::V1_0::ColorAspects;
+using ::android::hardware::media::V1_0::Rect;
+using ::android::hardware::media::V1_0::Region;
+
+using ::android::hardware::graphics::common::V1_0::Dataspace;
+
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+
+using ::android::OMXBuffer;
+
+using ::android::hardware::media::V1_0::AnwBuffer;
+using ::android::GraphicBuffer;
+
+using ::android::hardware::media::omx::V1_0::IOmx;
+using ::android::IOMX;
+
+using ::android::hardware::media::omx::V1_0::IOmxNode;
+using ::android::IOMXNode;
+
+using ::android::hardware::media::omx::V1_0::IOmxObserver;
+using ::android::IOMXObserver;
+
+using ::android::hardware::media::omx::V1_0::IOmxBufferSource;
+using ::android::IOMXBufferSource;
+
+using ::android::hardware::media::omx::V1_0::IOmxBufferProducer;
+using ::android::IGraphicBufferProducer;
+
+// native_handle_t helper functions.
+
+/**
+ * \brief Take an fd and create a native handle containing only the given fd.
+ * The created handle will need to be deleted manually with
+ * `native_handle_delete()`.
+ *
+ * \param[in] fd The source file descriptor (of type `int`).
+ * \return The create `native_handle_t*` that contains the given \p fd. If the
+ * supplied \p fd is negative, the created native handle will contain no file
+ * descriptors.
+ *
+ * If the native handle cannot be created, the return value will be
+ * `nullptr`.
+ *
+ * This function does not duplicate the file descriptor.
+ */
+inline native_handle_t* native_handle_create_from_fd(int fd) {
+    if (fd < 0) {
+        return native_handle_create(0, 0);
+    }
+    native_handle_t* nh = native_handle_create(1, 0);
+    if (nh == nullptr) {
+        return nullptr;
+    }
+    nh->data[0] = fd;
+    return nh;
+}
+
+/**
+ * \brief Extract a file descriptor from a native handle.
+ *
+ * \param[in] nh The source `native_handle_t*`.
+ * \param[in] index The index of the file descriptor in \p nh to read from. This
+ * input has the default value of `0`.
+ * \return The `index`-th file descriptor in \p nh. If \p nh does not have
+ * enough file descriptors, the returned value will be `-1`.
+ *
+ * This function does not duplicate the file descriptor.
+ */
+inline int native_handle_read_fd(native_handle_t const* nh, int index = 0) {
+    return ((nh == nullptr) || (nh->numFds == 0) ||
+            (nh->numFds <= index) || (index < 0)) ?
+            -1 : nh->data[index];
+}
+
+/**
+ * Conversion functions
+ * ====================
+ *
+ * There are two main directions of conversion:
+ * - `inTargetType(...)`: Create a wrapper whose lifetime depends on the
+ *   input. The wrapper has type `TargetType`.
+ * - `toTargetType(...)`: Create a standalone object of type `TargetType` that
+ *   corresponds to the input. The lifetime of the output does not depend on the
+ *   lifetime of the input.
+ * - `wrapIn(TargetType*, ...)`: Same as `inTargetType()`, but for `TargetType`
+ *   that cannot be copied and/or moved efficiently, or when there are multiple
+ *   output arguments.
+ * - `convertTo(TargetType*, ...)`: Same as `toTargetType()`, but for
+ *   `TargetType` that cannot be copied and/or moved efficiently, or when there
+ *   are multiple output arguments.
+ *
+ * `wrapIn()` and `convertTo()` functions will take output arguments before
+ * input arguments. Some of these functions might return a value to indicate
+ * success or error.
+ *
+ * In converting or wrapping something as a Treble type that contains a
+ * `hidl_handle`, `native_handle_t*` will need to be created and returned as
+ * an additional output argument, hence only `wrapIn()` or `convertTo()` would
+ * be available. The caller must call `native_handle_delete()` to deallocate the
+ * returned native handle when it is no longer needed.
+ *
+ * For types that contain file descriptors, `inTargetType()` and `wrapAs()` do
+ * not perform duplication of file descriptors, while `toTargetType()` and
+ * `convertTo()` do.
+ */
+
+/**
+ * \brief Convert `binder::Status` to `Return<void>`.
+ *
+ * \param[in] l The source `binder::Status`.
+ * \return The corresponding `Return<void>`.
+ */
+// convert: ::android::binder::Status -> Return<void>
+inline Return<void> toHardwareStatus(
+        ::android::binder::Status const& l) {
+    if (l.exceptionCode() == ::android::binder::Status::EX_SERVICE_SPECIFIC) {
+        return ::android::hardware::Status::fromServiceSpecificError(
+                l.serviceSpecificErrorCode(),
+                l.exceptionMessage());
+    }
+    return ::android::hardware::Status::fromExceptionCode(
+            l.exceptionCode(),
+            l.exceptionMessage());
+}
+
+/**
+ * \brief Convert `Return<void>` to `binder::Status`.
+ *
+ * \param[in] t The source `Return<void>`.
+ * \return The corresponding `binder::Status`.
+ */
+// convert: Return<void> -> ::android::binder::Status
+inline ::android::binder::Status toBinderStatus(
+        Return<void> const& t) {
+    return ::android::binder::Status::fromExceptionCode(
+            t.isOk() ? OK : UNKNOWN_ERROR,
+            t.description().c_str());
+}
+
+/**
+ * \brief Convert `Return<Status>` to `status_t`. This is for legacy binder
+ * calls.
+ *
+ * \param[in] t The source `Return<Status>`.
+ * \return The corresponding `status_t`.
+ *
+ * This function first check if \p t has a transport error. If it does, then the
+ * return value is the transport error code. Otherwise, the return value is
+ * converted from `Status` contained inside \p t.
+ *
+ * Note:
+ * - This `Status` is omx-specific. It is defined in `types.hal`.
+ * - The name of this function is not `convert`.
+ */
+// convert: Status -> status_t
+inline status_t toStatusT(Return<Status> const& t) {
+    return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) : UNKNOWN_ERROR;
+}
+
+/**
+ * \brief Convert `Return<void>` to `status_t`. This is for legacy binder calls.
+ *
+ * \param[in] t The source `Return<void>`.
+ * \return The corresponding `status_t`.
+ */
+// convert: Return<void> -> status_t
+inline status_t toStatusT(Return<void> const& t) {
+    return t.isOk() ? OK : UNKNOWN_ERROR;
+}
+
+/**
+ * \brief Convert `Status` to `status_t`. This is for legacy binder calls.
+ *
+ * \param[in] t The source `Status`.
+ * \return the corresponding `status_t`.
+ */
+// convert: Status -> status_t
+inline status_t toStatusT(Status const& t) {
+    return static_cast<status_t>(t);
+}
+
+/**
+ * \brief Convert `status_t` to `Status`.
+ *
+ * \param[in] l The source `status_t`.
+ * \return The corresponding `Status`.
+ */
+// convert: status_t -> Status
+inline Status toStatus(status_t l) {
+    return static_cast<Status>(l);
+}
+
+/**
+ * \brief Wrap `native_handle_t*` in `hidl_handle`.
+ *
+ * \param[in] nh The source `native_handle_t*`.
+ * \return The `hidl_handle` that points to \p nh.
+ */
+// wrap: native_handle_t* -> hidl_handle
+inline hidl_handle inHidlHandle(native_handle_t const* nh) {
+    return hidl_handle(nh);
+}
+
+/**
+ * \brief Wrap an `omx_message` and construct the corresponding `Message`.
+ *
+ * \param[out] t The wrapper of type `Message`.
+ * \param[out] nh The native_handle_t referred to by `t->fence`.
+ * \param[in] l The source `omx_message`.
+ * \return `true` if the wrapping is successful; `false` otherwise.
+ *
+ * Upon success, \p nh will be created to hold the file descriptor stored in
+ * `l.fenceFd`, and `t->fence` will point to \p nh. \p nh will need to be
+ * destroyed manually by `native_handle_delete()` when \p t is no longer needed.
+ *
+ * Upon failure, \p nh will not be created and will not need to be deleted. \p t
+ * will be invalid.
+ */
+// wrap, omx_message -> Message, native_handle_t*
+inline bool wrapAs(Message* t, native_handle_t** nh, omx_message const& l) {
+    *nh = native_handle_create_from_fd(l.fenceFd);
+    if (!*nh) {
+        return false;
+    }
+    t->fence = inHidlHandle(*nh);
+    switch (l.type) {
+        case omx_message::EVENT:
+            t->type = Message::Type::EVENT;
+            t->data.eventData.data1 = l.u.event_data.data1;
+            t->data.eventData.data2 = l.u.event_data.data2;
+            t->data.eventData.data3 = l.u.event_data.data3;
+            t->data.eventData.data4 = l.u.event_data.data4;
+            break;
+        case omx_message::EMPTY_BUFFER_DONE:
+            t->type = Message::Type::EMPTY_BUFFER_DONE;
+            t->data.bufferData.buffer = l.u.buffer_data.buffer;
+            break;
+        case omx_message::FILL_BUFFER_DONE:
+            t->type = Message::Type::FILL_BUFFER_DONE;
+            t->data.extendedBufferData.buffer = l.u.extended_buffer_data.buffer;
+            t->data.extendedBufferData.rangeOffset =
+                    l.u.extended_buffer_data.range_offset;
+            t->data.extendedBufferData.rangeLength =
+                    l.u.extended_buffer_data.range_length;
+            t->data.extendedBufferData.flags = l.u.extended_buffer_data.flags;
+            t->data.extendedBufferData.timestampUs =
+                    l.u.extended_buffer_data.timestamp;
+            break;
+        case omx_message::FRAME_RENDERED:
+            t->type = Message::Type::FRAME_RENDERED;
+            t->data.renderData.timestampUs = l.u.render_data.timestamp;
+            t->data.renderData.systemTimeNs = l.u.render_data.nanoTime;
+            break;
+        default:
+            native_handle_delete(*nh);
+            return false;
+    }
+    return true;
+}
+
+/**
+ * \brief Wrap a `Message` inside an `omx_message`.
+ *
+ * \param[out] l The wrapper of type `omx_message`.
+ * \param[in] t The source `Message`.
+ * \return `true` if the wrapping is successful; `false` otherwise.
+ */
+// wrap: Message -> omx_message
+inline bool wrapAs(omx_message* l, Message const& t) {
+    l->fenceFd = native_handle_read_fd(t.fence);
+    switch (t.type) {
+        case Message::Type::EVENT:
+            l->type = omx_message::EVENT;
+            l->u.event_data.data1 = t.data.eventData.data1;
+            l->u.event_data.data2 = t.data.eventData.data2;
+            l->u.event_data.data3 = t.data.eventData.data3;
+            l->u.event_data.data4 = t.data.eventData.data4;
+            break;
+        case Message::Type::EMPTY_BUFFER_DONE:
+            l->type = omx_message::EMPTY_BUFFER_DONE;
+            l->u.buffer_data.buffer = t.data.bufferData.buffer;
+            break;
+        case Message::Type::FILL_BUFFER_DONE:
+            l->type = omx_message::FILL_BUFFER_DONE;
+            l->u.extended_buffer_data.buffer = t.data.extendedBufferData.buffer;
+            l->u.extended_buffer_data.range_offset =
+                    t.data.extendedBufferData.rangeOffset;
+            l->u.extended_buffer_data.range_length =
+                    t.data.extendedBufferData.rangeLength;
+            l->u.extended_buffer_data.flags = t.data.extendedBufferData.flags;
+            l->u.extended_buffer_data.timestamp =
+                    t.data.extendedBufferData.timestampUs;
+            break;
+        case Message::Type::FRAME_RENDERED:
+            l->type = omx_message::FRAME_RENDERED;
+            l->u.render_data.timestamp = t.data.renderData.timestampUs;
+            l->u.render_data.nanoTime = t.data.renderData.systemTimeNs;
+            break;
+        default:
+            return false;
+    }
+    return true;
+}
+
+/**
+ * \brief Similar to `wrapTo(omx_message*, Message const&)`, but the output will
+ * have an extended lifetime.
+ *
+ * \param[out] l The output `omx_message`.
+ * \param[in] t The source `Message`.
+ * \return `true` if the conversion is successful; `false` otherwise.
+ *
+ * This function calls `wrapto()`, then attempts to duplicate the file
+ * descriptor for the fence if it is not `-1`. If duplication fails, `false`
+ * will be returned.
+ */
+// convert: Message -> omx_message
+inline bool convertTo(omx_message* l, Message const& t) {
+    if (!wrapAs(l, t)) {
+        return false;
+    }
+    if (l->fenceFd == -1) {
+        return true;
+    }
+    l->fenceFd = dup(l->fenceFd);
+    return l->fenceFd != -1;
+}
+
+/**
+ * \brief Wrap an `OMXFenceParcelable` inside a `hidl_handle`.
+ *
+ * \param[out] t The wrapper of type `hidl_handle`.
+ * \param[out] nh The native handle created to hold the file descriptor inside
+ * \p l.
+ * \param[in] l The source `OMXFenceParcelable`, which essentially contains one
+ * file descriptor.
+ * \return `true` if \p t and \p nh are successfully created to wrap around \p
+ * l; `false` otherwise.
+ *
+ * On success, \p nh needs to be deleted by the caller with
+ * `native_handle_delete()` after \p t and \p nh are no longer needed.
+ *
+ * On failure, \p nh will not need to be deleted, and \p t will hold an invalid
+ * value.
+ */
+// wrap: OMXFenceParcelable -> hidl_handle, native_handle_t*
+inline bool wrapAs(hidl_handle* t, native_handle_t** nh,
+        OMXFenceParcelable const& l) {
+    *nh = native_handle_create_from_fd(l.get());
+    if (!*nh) {
+        return false;
+    }
+    *t = *nh;
+    return true;
+}
+
+/**
+ * \brief Wrap a `hidl_handle` inside an `OMXFenceParcelable`.
+ *
+ * \param[out] l The wrapper of type `OMXFenceParcelable`.
+ * \param[in] t The source `hidl_handle`.
+ */
+// wrap: hidl_handle -> OMXFenceParcelable
+inline void wrapAs(OMXFenceParcelable* l, hidl_handle const& t) {
+    l->mFenceFd = native_handle_read_fd(t);
+}
+
+/**
+ * \brief Convert a `hidl_handle` to `OMXFenceParcelable`. If `hidl_handle`
+ * contains file descriptors, the first file descriptor will be duplicated and
+ * stored in the output `OMXFenceParcelable`.
+ *
+ * \param[out] l The output `OMXFenceParcelable`.
+ * \param[in] t The input `hidl_handle`.
+ * \return `false` if \p t contains a valid file descriptor but duplication
+ * fails; `true` otherwise.
+ */
+// convert: hidl_handle -> OMXFenceParcelable
+inline bool convertTo(OMXFenceParcelable* l, hidl_handle const& t) {
+    int fd = native_handle_read_fd(t);
+    if (fd != -1) {
+        fd = dup(fd);
+        if (fd == -1) {
+            return false;
+        }
+    }
+    l->mFenceFd = fd;
+    return true;
+}
+
+/**
+ * \brief Convert `::android::ColorAspects` to `ColorAspects`.
+ *
+ * \param[in] l The source `::android::ColorAspects`.
+ * \return The corresponding `ColorAspects`.
+ */
+// convert: ::android::ColorAspects -> ColorAspects
+inline ColorAspects toHardwareColorAspects(::android::ColorAspects const& l) {
+    return ColorAspects{
+            static_cast<ColorAspects::Range>(l.mRange),
+            static_cast<ColorAspects::Primaries>(l.mPrimaries),
+            static_cast<ColorAspects::Transfer>(l.mTransfer),
+            static_cast<ColorAspects::MatrixCoeffs>(l.mMatrixCoeffs)};
+}
+
+/**
+ * \brief Convert `int32_t` to `ColorAspects`.
+ *
+ * \param[in] l The source `int32_t`.
+ * \return The corresponding `ColorAspects`.
+ */
+// convert: int32_t -> ColorAspects
+inline ColorAspects toHardwareColorAspects(int32_t l) {
+    return ColorAspects{
+            static_cast<ColorAspects::Range>((l >> 24) & 0xFF),
+            static_cast<ColorAspects::Primaries>((l >> 16) & 0xFF),
+            static_cast<ColorAspects::Transfer>(l & 0xFF),
+            static_cast<ColorAspects::MatrixCoeffs>((l >> 8) & 0xFF)};
+}
+
+/**
+ * \brief Convert `ColorAspects` to `::android::ColorAspects`.
+ *
+ * \param[in] t The source `ColorAspects`.
+ * \return The corresponding `::android::ColorAspects`.
+ */
+// convert: ColorAspects -> ::android::ColorAspects
+inline int32_t toCompactColorAspects(ColorAspects const& t) {
+    return static_cast<int32_t>(
+            (static_cast<uint32_t>(t.range) << 24) |
+            (static_cast<uint32_t>(t.primaries) << 16) |
+            (static_cast<uint32_t>(t.transfer)) |
+            (static_cast<uint32_t>(t.matrixCoeffs) << 8));
+}
+
+/**
+ * \brief Convert `int32_t` to `Dataspace`.
+ *
+ * \param[in] l The source `int32_t`.
+ * \result The corresponding `Dataspace`.
+ */
+// convert: int32_t -> Dataspace
+inline Dataspace toHardwareDataspace(int32_t l) {
+    return static_cast<Dataspace>(l);
+}
+
+/**
+ * \brief Convert `Dataspace` to `int32_t`.
+ *
+ * \param[in] t The source `Dataspace`.
+ * \result The corresponding `int32_t`.
+ */
+// convert: Dataspace -> int32_t
+inline int32_t toRawDataspace(Dataspace const& t) {
+    return static_cast<int32_t>(t);
+}
+
+/**
+ * \brief Wrap an opaque buffer inside a `hidl_vec<uint8_t>`.
+ *
+ * \param[in] l The pointer to the beginning of the opaque buffer.
+ * \param[in] size The size of the buffer.
+ * \return A `hidl_vec<uint8_t>` that points to the buffer.
+ */
+// wrap: void*, size_t -> hidl_vec<uint8_t>
+inline hidl_vec<uint8_t> inHidlBytes(void const* l, size_t size) {
+    hidl_vec<uint8_t> t;
+    t.setToExternal(static_cast<uint8_t*>(const_cast<void*>(l)), size, false);
+    return t;
+}
+
+/**
+ * \brief Create a `hidl_vec<uint8_t>` that is a copy of an opaque buffer.
+ *
+ * \param[in] l The pointer to the beginning of the opaque buffer.
+ * \param[in] size The size of the buffer.
+ * \return A `hidl_vec<uint8_t>` that is a copy of the input buffer.
+ */
+// convert: void*, size_t -> hidl_vec<uint8_t>
+inline hidl_vec<uint8_t> toHidlBytes(void const* l, size_t size) {
+    hidl_vec<uint8_t> t;
+    t.resize(size);
+    uint8_t const* src = static_cast<uint8_t const*>(l);
+    std::copy(src, src + size, t.data());
+    return t;
+}
+
+/**
+ * \brief Wrap `OMXBuffer` in `CodecBuffer`.
+ *
+ * \param[out] t The wrapper of type `CodecBuffer`.
+ * \param[in] l The source `OMXBuffer`.
+ * \return `true` if the wrapping is successful; `false` otherwise.
+ */
+// wrap: OMXBuffer -> CodecBuffer
+inline bool wrapAs(CodecBuffer* t, OMXBuffer const& l) {
+    t->nativeHandle = hidl_handle();
+    t->sharedMemory = hidl_memory();
+    switch (l.mBufferType) {
+        case OMXBuffer::kBufferTypeInvalid: {
+            t->type = CodecBuffer::Type::INVALID;
+            return true;
+        }
+        case OMXBuffer::kBufferTypePreset: {
+            t->type = CodecBuffer::Type::PRESET;
+            t->attr.preset.rangeLength = static_cast<uint32_t>(l.mRangeLength);
+            t->attr.preset.rangeOffset = static_cast<uint32_t>(l.mRangeOffset);
+            return true;
+        }
+        case OMXBuffer::kBufferTypeHidlMemory: {
+            t->type = CodecBuffer::Type::SHARED_MEM;
+            t->sharedMemory = l.mHidlMemory;
+            return true;
+        }
+        case OMXBuffer::kBufferTypeSharedMem: {
+            // This is not supported.
+            return false;
+        }
+        case OMXBuffer::kBufferTypeANWBuffer: {
+            t->type = CodecBuffer::Type::ANW_BUFFER;
+            t->attr.anwBuffer.width = l.mGraphicBuffer->getWidth();
+            t->attr.anwBuffer.height = l.mGraphicBuffer->getHeight();
+            t->attr.anwBuffer.stride = l.mGraphicBuffer->getStride();
+            t->attr.anwBuffer.format = static_cast<PixelFormat>(
+                    l.mGraphicBuffer->getPixelFormat());
+            t->attr.anwBuffer.layerCount = l.mGraphicBuffer->getLayerCount();
+            t->attr.anwBuffer.usage = l.mGraphicBuffer->getUsage();
+            t->nativeHandle = hidl_handle(l.mGraphicBuffer->handle);
+            return true;
+        }
+        case OMXBuffer::kBufferTypeNativeHandle: {
+            t->type = CodecBuffer::Type::NATIVE_HANDLE;
+            t->nativeHandle = hidl_handle(l.mNativeHandle->handle());
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * \brief Convert `CodecBuffer` to `OMXBuffer`.
+ *
+ * \param[out] l The destination `OMXBuffer`.
+ * \param[in] t The source `CodecBuffer`.
+ * \return `true` if successful; `false` otherwise.
+ */
+// convert: CodecBuffer -> OMXBuffer
+inline bool convertTo(OMXBuffer* l, CodecBuffer const& t) {
+    switch (t.type) {
+        case CodecBuffer::Type::INVALID: {
+            *l = OMXBuffer();
+            return true;
+        }
+        case CodecBuffer::Type::PRESET: {
+            *l = OMXBuffer(
+                    t.attr.preset.rangeOffset,
+                    t.attr.preset.rangeLength);
+            return true;
+        }
+        case CodecBuffer::Type::SHARED_MEM: {
+            *l = OMXBuffer(t.sharedMemory);
+            return true;
+        }
+        case CodecBuffer::Type::ANW_BUFFER: {
+            *l = OMXBuffer(sp<GraphicBuffer>(new GraphicBuffer(
+                    t.attr.anwBuffer.width,
+                    t.attr.anwBuffer.height,
+                    static_cast<::android::PixelFormat>(
+                            t.attr.anwBuffer.format),
+                    t.attr.anwBuffer.layerCount,
+                    t.attr.anwBuffer.usage,
+                    t.attr.anwBuffer.stride,
+                    native_handle_clone(t.nativeHandle),
+                    true)));
+            return true;
+        }
+        case CodecBuffer::Type::NATIVE_HANDLE: {
+            *l = OMXBuffer(NativeHandle::create(
+                    native_handle_clone(t.nativeHandle), true));
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * \brief Convert `IOMX::ComponentInfo` to `IOmx::ComponentInfo`.
+ *
+ * \param[out] t The destination `IOmx::ComponentInfo`.
+ * \param[in] l The source `IOMX::ComponentInfo`.
+ */
+// convert: IOMX::ComponentInfo -> IOmx::ComponentInfo
+inline bool convertTo(IOmx::ComponentInfo* t, IOMX::ComponentInfo const& l) {
+    t->mName = l.mName.string();
+    t->mRoles.resize(l.mRoles.size());
+    size_t i = 0;
+    for (auto& role : l.mRoles) {
+        t->mRoles[i++] = role.string();
+    }
+    return true;
+}
+
+/**
+ * \brief Convert `IOmx::ComponentInfo` to `IOMX::ComponentInfo`.
+ *
+ * \param[out] l The destination `IOMX::ComponentInfo`.
+ * \param[in] t The source `IOmx::ComponentInfo`.
+ */
+// convert: IOmx::ComponentInfo -> IOMX::ComponentInfo
+inline bool convertTo(IOMX::ComponentInfo* l, IOmx::ComponentInfo const& t) {
+    l->mName = t.mName.c_str();
+    l->mRoles.clear();
+    for (size_t i = 0; i < t.mRoles.size(); ++i) {
+        l->mRoles.push_back(String8(t.mRoles[i].c_str()));
+    }
+    return true;
+}
+
+/**
+ * \brief Convert `OMX_BOOL` to `bool`.
+ *
+ * \param[in] l The source `OMX_BOOL`.
+ * \return The destination `bool`.
+ */
+// convert: OMX_BOOL -> bool
+inline bool toRawBool(OMX_BOOL l) {
+    return l == OMX_FALSE ? false : true;
+}
+
+/**
+ * \brief Convert `bool` to `OMX_BOOL`.
+ *
+ * \param[in] t The source `bool`.
+ * \return The destination `OMX_BOOL`.
+ */
+// convert: bool -> OMX_BOOL
+inline OMX_BOOL toEnumBool(bool t) {
+    return t ? OMX_TRUE : OMX_FALSE;
+}
+
+/**
+ * \brief Convert `OMX_COMMANDTYPE` to `uint32_t`.
+ *
+ * \param[in] l The source `OMX_COMMANDTYPE`.
+ * \return The underlying value of type `uint32_t`.
+ *
+ * `OMX_COMMANDTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: OMX_COMMANDTYPE -> uint32_t
+inline uint32_t toRawCommandType(OMX_COMMANDTYPE l) {
+    return static_cast<uint32_t>(l);
+}
+
+/**
+ * \brief Convert `uint32_t` to `OMX_COMMANDTYPE`.
+ *
+ * \param[in] t The source `uint32_t`.
+ * \return The corresponding enum value of type `OMX_COMMANDTYPE`.
+ *
+ * `OMX_COMMANDTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: uint32_t -> OMX_COMMANDTYPE
+inline OMX_COMMANDTYPE toEnumCommandType(uint32_t t) {
+    return static_cast<OMX_COMMANDTYPE>(t);
+}
+
+/**
+ * \brief Convert `OMX_INDEXTYPE` to `uint32_t`.
+ *
+ * \param[in] l The source `OMX_INDEXTYPE`.
+ * \return The underlying value of type `uint32_t`.
+ *
+ * `OMX_INDEXTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: OMX_INDEXTYPE -> uint32_t
+inline uint32_t toRawIndexType(OMX_INDEXTYPE l) {
+    return static_cast<uint32_t>(l);
+}
+
+/**
+ * \brief Convert `uint32_t` to `OMX_INDEXTYPE`.
+ *
+ * \param[in] t The source `uint32_t`.
+ * \return The corresponding enum value of type `OMX_INDEXTYPE`.
+ *
+ * `OMX_INDEXTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: uint32_t -> OMX_INDEXTYPE
+inline OMX_INDEXTYPE toEnumIndexType(uint32_t t) {
+    return static_cast<OMX_INDEXTYPE>(t);
+}
+
+/**
+ * \brief Convert `IOMX::PortMode` to `PortMode`.
+ *
+ * \param[in] l The source `IOMX::PortMode`.
+ * \return The destination `PortMode`.
+ */
+// convert: IOMX::PortMode -> PortMode
+inline PortMode toHardwarePortMode(IOMX::PortMode l) {
+    return static_cast<PortMode>(l);
+}
+
+/**
+ * \brief Convert `PortMode` to `IOMX::PortMode`.
+ *
+ * \param[in] t The source `PortMode`.
+ * \return The destination `IOMX::PortMode`.
+ */
+// convert: PortMode -> IOMX::PortMode
+inline IOMX::PortMode toIOMXPortMode(PortMode t) {
+    return static_cast<IOMX::PortMode>(t);
+}
+
+/**
+ * \brief Convert `OMX_TICKS` to `uint64_t`.
+ *
+ * \param[in] l The source `OMX_TICKS`.
+ * \return The destination `uint64_t`.
+ */
+// convert: OMX_TICKS -> uint64_t
+inline uint64_t toRawTicks(OMX_TICKS l) {
+#ifndef OMX_SKIP64BIT
+    return static_cast<uint64_t>(l);
+#else
+    return static_cast<uint64_t>(l.nLowPart) |
+            static_cast<uint64_t>(l.nHighPart << 32);
+#endif
+}
+
+/**
+ * \brief Convert `uint64_t` to `OMX_TICKS`.
+ *
+ * \param[in] l The source `uint64_t`.
+ * \return The destination `OMX_TICKS`.
+ */
+// convert: uint64_t -> OMX_TICKS
+inline OMX_TICKS toOMXTicks(uint64_t t) {
+#ifndef OMX_SKIP64BIT
+    return static_cast<OMX_TICKS>(t);
+#else
+    return OMX_TICKS{
+            static_cast<uint32_t>(t & 0xFFFFFFFF),
+            static_cast<uint32_t>(t >> 32)};
+#endif
+}
+
+/**
+ * \brief Wrap `GraphicBuffer` in `AnwBuffer`.
+ *
+ * \param[out] t The wrapper of type `AnwBuffer`.
+ * \param[in] l The source `GraphicBuffer`.
+ */
+// wrap: GraphicBuffer -> AnwBuffer
+inline void wrapAs(AnwBuffer* t, GraphicBuffer const& l) {
+    t->attr.width = l.getWidth();
+    t->attr.height = l.getHeight();
+    t->attr.stride = l.getStride();
+    t->attr.format = static_cast<PixelFormat>(l.getPixelFormat());
+    t->attr.layerCount = l.getLayerCount();
+    t->attr.usage = l.getUsage();
+    t->attr.id = l.getId();
+    t->attr.generationNumber = l.getGenerationNumber();
+    t->nativeHandle = hidl_handle(l.handle);
+}
+
+/**
+ * \brief Convert `AnwBuffer` to `GraphicBuffer`.
+ *
+ * \param[out] l The destination `GraphicBuffer`.
+ * \param[in] t The source `AnwBuffer`.
+ *
+ * This function will duplicate all file descriptors in \p t.
+ */
+// convert: AnwBuffer -> GraphicBuffer
+// Ref: frameworks/native/libs/ui/GraphicBuffer.cpp: GraphicBuffer::flatten
+inline bool convertTo(GraphicBuffer* l, AnwBuffer const& t) {
+    native_handle_t* handle = t.nativeHandle == nullptr ?
+            nullptr : native_handle_clone(t.nativeHandle);
+
+    size_t const numInts = 12 + (handle ? handle->numInts : 0);
+    int32_t* ints = new int32_t[numInts];
+
+    size_t numFds = static_cast<size_t>(handle ? handle->numFds : 0);
+    int* fds = new int[numFds];
+
+    ints[0] = 'GBFR';
+    ints[1] = static_cast<int32_t>(t.attr.width);
+    ints[2] = static_cast<int32_t>(t.attr.height);
+    ints[3] = static_cast<int32_t>(t.attr.stride);
+    ints[4] = static_cast<int32_t>(t.attr.format);
+    ints[5] = static_cast<int32_t>(t.attr.layerCount);
+    ints[6] = static_cast<int32_t>(t.attr.usage);
+    ints[7] = static_cast<int32_t>(t.attr.id >> 32);
+    ints[8] = static_cast<int32_t>(t.attr.id & 0xFFFFFFFF);
+    ints[9] = static_cast<int32_t>(t.attr.generationNumber);
+    ints[10] = 0;
+    ints[11] = 0;
+    if (handle) {
+        ints[10] = static_cast<int32_t>(handle->numFds);
+        ints[11] = static_cast<int32_t>(handle->numInts);
+        int* intsStart = handle->data + handle->numFds;
+        std::copy(handle->data, intsStart, fds);
+        std::copy(intsStart, intsStart + handle->numInts, &ints[12]);
+    }
+
+    void const* constBuffer = static_cast<void const*>(ints);
+    size_t size = numInts * sizeof(int32_t);
+    int const* constFds = static_cast<int const*>(fds);
+    status_t status = l->unflatten(constBuffer, size, constFds, numFds);
+
+    delete [] fds;
+    delete [] ints;
+    native_handle_delete(handle);
+    return status == NO_ERROR;
+}
+
+/**
+ * Conversion functions for types outside media
+ * ============================================
+ *
+ * Some objects in libui and libgui that were made to go through binder calls do
+ * not expose ways to read or write their fields to the public. To pass an
+ * object of this kind through the HIDL boundary, translation functions need to
+ * work around the access restriction by using the publicly available
+ * `flatten()` and `unflatten()` functions.
+ *
+ * All `flatten()` and `unflatten()` overloads follow the same convention as
+ * follows:
+ *
+ *     status_t flatten(ObjectType const& object,
+ *                      [OtherType const& other, ...]
+ *                      void*& buffer, size_t& size,
+ *                      int*& fds, size_t& numFds)
+ *
+ *     status_t unflatten(ObjectType* object,
+ *                        [OtherType* other, ...,]
+ *                        void*& buffer, size_t& size,
+ *                        int*& fds, size_t& numFds)
+ *
+ * The number of `other` parameters varies depending on the `ObjectType`. For
+ * example, in the process of unflattening an object that contains
+ * `hidl_handle`, `other` is needed to hold `native_handle_t` objects that will
+ * be created.
+ *
+ * The last four parameters always work the same way in all overloads of
+ * `flatten()` and `unflatten()`:
+ * - For `flatten()`, `buffer` is the pointer to the non-fd buffer to be filled,
+ *   `size` is the size (in bytes) of the non-fd buffer pointed to by `buffer`,
+ *   `fds` is the pointer to the fd buffer to be filled, and `numFds` is the
+ *   size (in ints) of the fd buffer pointed to by `fds`.
+ * - For `unflatten()`, `buffer` is the pointer to the non-fd buffer to be read
+ *   from, `size` is the size (in bytes) of the non-fd buffer pointed to by
+ *   `buffer`, `fds` is the pointer to the fd buffer to be read from, and
+ *   `numFds` is the size (in ints) of the fd buffer pointed to by `fds`.
+ * - After a successful call to `flatten()` or `unflatten()`, `buffer` and `fds`
+ *   will be advanced, while `size` and `numFds` will be decreased to reflect
+ *   how much storage/data of the two buffers (fd and non-fd) have been used.
+ * - After an unsuccessful call, the values of `buffer`, `size`, `fds` and
+ *   `numFds` are invalid.
+ *
+ * The return value of a successful `flatten()` or `unflatten()` call will be
+ * `OK` (also aliased as `NO_ERROR`). Any other values indicate a failure.
+ *
+ * For each object type that supports flattening, there will be two accompanying
+ * functions: `getFlattenedSize()` and `getFdCount()`. `getFlattenedSize()` will
+ * return the size of the non-fd buffer that the object will need for
+ * flattening. `getFdCount()` will return the size of the fd buffer that the
+ * object will need for flattening.
+ *
+ * The set of these four functions, `getFlattenedSize()`, `getFdCount()`,
+ * `flatten()` and `unflatten()`, are similar to functions of the same name in
+ * the abstract class `Flattenable`. The only difference is that functions in
+ * this file are not member functions of the object type. For example, we write
+ *
+ *     flatten(x, buffer, size, fds, numFds)
+ *
+ * instead of
+ *
+ *     x.flatten(buffer, size, fds, numFds)
+ *
+ * because we cannot modify the type of `x`.
+ *
+ * There is one exception to the naming convention: `hidl_handle` that
+ * represents a fence. The four functions for this "Fence" type have the word
+ * "Fence" attched to their names because the object type, which is
+ * `hidl_handle`, does not carry the special meaning that the object itself can
+ * only contain zero or one file descriptor.
+ */
+
+// Ref: frameworks/native/libs/ui/Fence.cpp
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten a fence.
+ *
+ * \param[in] fence The input fence of type `hidl_handle`.
+ * \return The required size of the flat buffer.
+ *
+ * The current version of this function always returns 4, which is the number of
+ * bytes required to store the number of file descriptors contained in the fd
+ * part of the flat buffer.
+ */
+inline size_t getFenceFlattenedSize(hidl_handle const& /* fence */) {
+    return 4;
+};
+
+/**
+ * \brief Return the number of file descriptors contained in a fence.
+ *
+ * \param[in] fence The input fence of type `hidl_handle`.
+ * \return `0` if \p fence does not contain a valid file descriptor, or `1`
+ * otherwise.
+ */
+inline size_t getFenceFdCount(hidl_handle const& fence) {
+    return native_handle_read_fd(fence) == -1 ? 0 : 1;
+}
+
+/**
+ * \brief Unflatten `Fence` to `hidl_handle`.
+ *
+ * \param[out] fence The destination `hidl_handle`.
+ * \param[out] nh The underlying native handle.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR`, \p nh will point to a newly created
+ * native handle, which needs to be deleted with `native_handle_delete()`
+ * afterwards.
+ */
+inline status_t unflattenFence(hidl_handle* fence, native_handle_t** nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < 4) {
+        return NO_MEMORY;
+    }
+
+    uint32_t numFdsInHandle;
+    FlattenableUtils::read(buffer, size, numFdsInHandle);
+
+    if (numFdsInHandle > 1) {
+        return BAD_VALUE;
+    }
+
+    if (numFds < numFdsInHandle) {
+        return NO_MEMORY;
+    }
+
+    if (numFdsInHandle) {
+        *nh = native_handle_create_from_fd(*fds);
+        if (*nh == nullptr) {
+            return NO_MEMORY;
+        }
+        *fence = hidl_handle(*nh);
+        ++fds;
+        --numFds;
+    } else {
+        *nh = nullptr;
+        *fence = hidl_handle();
+    }
+
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `hidl_handle` as `Fence`.
+ *
+ * \param[in] t The source `hidl_handle`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ */
+inline status_t flattenFence(hidl_handle const& fence,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (size < getFenceFlattenedSize(fence) ||
+            numFds < getFenceFdCount(fence)) {
+        return NO_MEMORY;
+    }
+    // Cast to uint32_t since the size of a size_t can vary between 32- and
+    // 64-bit processes
+    FlattenableUtils::write(buffer, size,
+            static_cast<uint32_t>(getFenceFdCount(fence)));
+    int fd = native_handle_read_fd(fence);
+    if (fd != -1) {
+        *fds = fd;
+        ++fds;
+        --numFds;
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Wrap `Fence` in `hidl_handle`.
+ *
+ * \param[out] t The wrapper of type `hidl_handle`.
+ * \param[out] nh The native handle pointed to by \p t.
+ * \param[in] l The source `Fence`.
+ *
+ * On success, \p nh will hold a newly created native handle, which must be
+ * deleted manually with `native_handle_delete()` afterwards.
+ */
+// wrap: Fence -> hidl_handle
+inline bool wrapAs(hidl_handle* t, native_handle_t** nh, Fence const& l) {
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = l.getFdCount();
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = static_cast<int*>(baseFds.get());
+    size_t numFds = baseNumFds;
+    if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (unflattenFence(t, nh, constBuffer, size, constFds, numFds)
+            != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `hidl_handle` to `Fence`.
+ *
+ * \param[out] l The destination `Fence`. `l` must not have been used
+ * (`l->isValid()` must return `false`) before this function is called.
+ * \param[in] t The source `hidl_handle`.
+ *
+ * If \p t contains a valid file descriptor, it will be duplicated.
+ */
+// convert: hidl_handle -> Fence
+inline bool convertTo(Fence* l, hidl_handle const& t) {
+    int fd = native_handle_read_fd(t);
+    if (fd != -1) {
+        fd = dup(fd);
+        if (fd == -1) {
+            return false;
+        }
+    }
+    native_handle_t* nh = native_handle_create_from_fd(fd);
+    if (nh == nullptr) {
+        if (fd != -1) {
+            close(fd);
+        }
+        return false;
+    }
+
+    size_t const baseSize = getFenceFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        native_handle_delete(nh);
+        return false;
+    }
+
+    size_t const baseNumFds = getFenceFdCount(t);
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        native_handle_delete(nh);
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = static_cast<int*>(baseFds.get());
+    size_t numFds = baseNumFds;
+    if (flattenFence(hidl_handle(nh), buffer, size, fds, numFds) != NO_ERROR) {
+        native_handle_delete(nh);
+        return false;
+    }
+    native_handle_delete(nh);
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/ui/FenceTime.cpp: FenceTime::Snapshot
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten
+ * `FenceTimeSnapshot`.
+ *
+ * \param[in] t The input `FenceTimeSnapshot`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(
+        IOmxBufferProducer::FenceTimeSnapshot const& t) {
+    constexpr size_t min = sizeof(t.state);
+    switch (t.state) {
+        case IOmxBufferProducer::FenceTimeSnapshot::State::EMPTY:
+            return min;
+        case IOmxBufferProducer::FenceTimeSnapshot::State::FENCE:
+            return min + getFenceFlattenedSize(t.fence);
+        case IOmxBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME:
+            return min + sizeof(
+                    ::android::FenceTime::Snapshot::signalTime);
+    }
+    return 0;
+}
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `FenceTimeSnapshot`.
+ *
+ * \param[in] t The input `FenceTimeSnapshot`.
+ * \return The number of file descriptors contained in \p snapshot.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::FenceTimeSnapshot const& t) {
+    return t.state ==
+            IOmxBufferProducer::FenceTimeSnapshot::State::FENCE ?
+            getFenceFdCount(t.fence) : 0;
+}
+
+/**
+ * \brief Flatten `FenceTimeSnapshot`.
+ *
+ * \param[in] t The source `FenceTimeSnapshot`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate the file descriptor in `t.fence` if `t.state ==
+ * FENCE`.
+ */
+inline status_t flatten(IOmxBufferProducer::FenceTimeSnapshot const& t,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    switch (t.state) {
+        case IOmxBufferProducer::FenceTimeSnapshot::State::EMPTY:
+            FlattenableUtils::write(buffer, size,
+                    ::android::FenceTime::Snapshot::State::EMPTY);
+            return NO_ERROR;
+        case IOmxBufferProducer::FenceTimeSnapshot::State::FENCE:
+            FlattenableUtils::write(buffer, size,
+                    ::android::FenceTime::Snapshot::State::FENCE);
+            return flattenFence(t.fence, buffer, size, fds, numFds);
+        case IOmxBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME:
+            FlattenableUtils::write(buffer, size,
+                    ::android::FenceTime::Snapshot::State::SIGNAL_TIME);
+            FlattenableUtils::write(buffer, size, t.signalTimeNs);
+            return NO_ERROR;
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Unflatten `FenceTimeSnapshot`.
+ *
+ * \param[out] t The destination `FenceTimeSnapshot`.
+ * \param[out] nh The underlying native handle.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR` and the constructed snapshot contains a
+ * file descriptor, \p nh will be created to hold that file descriptor. In this
+ * case, \p nh needs to be deleted with `native_handle_delete()` afterwards.
+ */
+inline status_t unflatten(
+        IOmxBufferProducer::FenceTimeSnapshot* t, native_handle_t** nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < sizeof(t->state)) {
+        return NO_MEMORY;
+    }
+
+    ::android::FenceTime::Snapshot::State state;
+    FlattenableUtils::read(buffer, size, state);
+    switch (state) {
+        case ::android::FenceTime::Snapshot::State::EMPTY:
+            t->state = IOmxBufferProducer::FenceTimeSnapshot::State::EMPTY;
+            return NO_ERROR;
+        case ::android::FenceTime::Snapshot::State::FENCE:
+            t->state = IOmxBufferProducer::FenceTimeSnapshot::State::FENCE;
+            return unflattenFence(&t->fence, nh, buffer, size, fds, numFds);
+        case ::android::FenceTime::Snapshot::State::SIGNAL_TIME:
+            t->state = IOmxBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME;
+            if (size < sizeof(t->signalTimeNs)) {
+                return NO_MEMORY;
+            }
+            FlattenableUtils::read(buffer, size, t->signalTimeNs);
+            return NO_ERROR;
+    }
+    return NO_ERROR;
+}
+
+// Ref: frameworks/native/libs/gui/FrameTimestamps.cpp: FrameEventsDelta
+
+/**
+ * \brief Return a lower bound on the size of the non-fd buffer required to
+ * flatten `FrameEventsDelta`.
+ *
+ * \param[in] t The input `FrameEventsDelta`.
+ * \return A lower bound on the size of the flat buffer.
+ */
+constexpr size_t minFlattenedSize(
+        IOmxBufferProducer::FrameEventsDelta const& /* t */) {
+    return sizeof(uint64_t) + // mFrameNumber
+            sizeof(uint8_t) + // mIndex
+            sizeof(uint8_t) + // mAddPostCompositeCalled
+            sizeof(uint8_t) + // mAddRetireCalled
+            sizeof(uint8_t) + // mAddReleaseCalled
+            sizeof(nsecs_t) + // mPostedTime
+            sizeof(nsecs_t) + // mRequestedPresentTime
+            sizeof(nsecs_t) + // mLatchTime
+            sizeof(nsecs_t) + // mFirstRefreshStartTime
+            sizeof(nsecs_t); // mLastRefreshStartTime
+}
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten
+ * `FrameEventsDelta`.
+ *
+ * \param[in] t The input `FrameEventsDelta`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(
+        IOmxBufferProducer::FrameEventsDelta const& t) {
+    return minFlattenedSize(t) +
+            getFlattenedSize(t.gpuCompositionDoneFence) +
+            getFlattenedSize(t.displayPresentFence) +
+            getFlattenedSize(t.displayRetireFence) +
+            getFlattenedSize(t.releaseFence);
+};
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `FrameEventsDelta`.
+ *
+ * \param[in] t The input `FrameEventsDelta`.
+ * \return The number of file descriptors contained in \p t.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::FrameEventsDelta const& t) {
+    return getFdCount(t.gpuCompositionDoneFence) +
+            getFdCount(t.displayPresentFence) +
+            getFdCount(t.displayRetireFence) +
+            getFdCount(t.releaseFence);
+};
+
+/**
+ * \brief Unflatten `FrameEventsDelta`.
+ *
+ * \param[out] t The destination `FrameEventsDelta`.
+ * \param[out] nh The underlying array of native handles.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR`, \p nh will have length 4, and it will be
+ * populated with `nullptr` or newly created handles. Each non-null slot in \p
+ * nh will need to be deleted manually with `native_handle_delete()`.
+ */
+inline status_t unflatten(IOmxBufferProducer::FrameEventsDelta* t,
+        std::vector<native_handle_t*>* nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < minFlattenedSize(*t)) {
+        return NO_MEMORY;
+    }
+    FlattenableUtils::read(buffer, size, t->frameNumber);
+
+    // These were written as uint8_t for alignment.
+    uint8_t temp = 0;
+    FlattenableUtils::read(buffer, size, temp);
+    size_t index = static_cast<size_t>(temp);
+    if (index >= ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
+        return BAD_VALUE;
+    }
+    t->index = static_cast<uint32_t>(index);
+
+    FlattenableUtils::read(buffer, size, temp);
+    t->addPostCompositeCalled = static_cast<bool>(temp);
+    FlattenableUtils::read(buffer, size, temp);
+    t->addRetireCalled = static_cast<bool>(temp);
+    FlattenableUtils::read(buffer, size, temp);
+    t->addReleaseCalled = static_cast<bool>(temp);
+
+    FlattenableUtils::read(buffer, size, t->postedTimeNs);
+    FlattenableUtils::read(buffer, size, t->requestedPresentTimeNs);
+    FlattenableUtils::read(buffer, size, t->latchTimeNs);
+    FlattenableUtils::read(buffer, size, t->firstRefreshStartTimeNs);
+    FlattenableUtils::read(buffer, size, t->lastRefreshStartTimeNs);
+    FlattenableUtils::read(buffer, size, t->dequeueReadyTime);
+
+    // Fences
+    IOmxBufferProducer::FenceTimeSnapshot* tSnapshot[4];
+    tSnapshot[0] = &t->gpuCompositionDoneFence;
+    tSnapshot[1] = &t->displayPresentFence;
+    tSnapshot[2] = &t->displayRetireFence;
+    tSnapshot[3] = &t->releaseFence;
+    nh->resize(4);
+    for (size_t snapshotIndex = 0; snapshotIndex < 4; ++snapshotIndex) {
+        status_t status = unflatten(
+                tSnapshot[snapshotIndex], &((*nh)[snapshotIndex]),
+                buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            while (snapshotIndex > 0) {
+                --snapshotIndex;
+                if ((*nh)[snapshotIndex] != nullptr) {
+                    native_handle_delete((*nh)[snapshotIndex]);
+                }
+            }
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `FrameEventsDelta`.
+ *
+ * \param[in] t The source `FrameEventsDelta`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate file descriptors contained in \p t.
+ */
+// Ref: frameworks/native/libs/gui/FrameTimestamp.cpp:
+//      FrameEventsDelta::flatten
+inline status_t flatten(IOmxBufferProducer::FrameEventsDelta const& t,
+        void*& buffer, size_t& size, int*& fds, size_t numFds) {
+    // Check that t.index is within a valid range.
+    if (t.index >= static_cast<uint32_t>(FrameEventHistory::MAX_FRAME_HISTORY)
+            || t.index > std::numeric_limits<uint8_t>::max()) {
+        return BAD_VALUE;
+    }
+
+    FlattenableUtils::write(buffer, size, t.frameNumber);
+
+    // These are static_cast to uint8_t for alignment.
+    FlattenableUtils::write(buffer, size, static_cast<uint8_t>(t.index));
+    FlattenableUtils::write(
+            buffer, size, static_cast<uint8_t>(t.addPostCompositeCalled));
+    FlattenableUtils::write(
+            buffer, size, static_cast<uint8_t>(t.addRetireCalled));
+    FlattenableUtils::write(
+            buffer, size, static_cast<uint8_t>(t.addReleaseCalled));
+
+    FlattenableUtils::write(buffer, size, t.postedTimeNs);
+    FlattenableUtils::write(buffer, size, t.requestedPresentTimeNs);
+    FlattenableUtils::write(buffer, size, t.latchTimeNs);
+    FlattenableUtils::write(buffer, size, t.firstRefreshStartTimeNs);
+    FlattenableUtils::write(buffer, size, t.lastRefreshStartTimeNs);
+    FlattenableUtils::write(buffer, size, t.dequeueReadyTime);
+
+    // Fences
+    IOmxBufferProducer::FenceTimeSnapshot const* tSnapshot[4];
+    tSnapshot[0] = &t.gpuCompositionDoneFence;
+    tSnapshot[1] = &t.displayPresentFence;
+    tSnapshot[2] = &t.displayRetireFence;
+    tSnapshot[3] = &t.releaseFence;
+    for (size_t snapshotIndex = 0; snapshotIndex < 4; ++snapshotIndex) {
+        status_t status = flatten(
+                *(tSnapshot[snapshotIndex]), buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+// Ref: frameworks/native/libs/gui/FrameTimestamps.cpp: FrameEventHistoryDelta
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::FrameEventHistoryDelta`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(
+        IOmxBufferProducer::FrameEventHistoryDelta const& t) {
+    size_t size = 4;
+    for (size_t i = 0; i < t.size(); ++i) {
+        size += getFlattenedSize(t[i]);
+    }
+    return size;
+}
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::FrameEventHistoryDelta`.
+ * \return The number of file descriptors contained in \p t.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::FrameEventHistoryDelta const& t) {
+    size_t numFds = 0;
+    for (size_t i = 0; i < t.size(); ++i) {
+        numFds += getFdCount(t[i]);
+    }
+    return numFds;
+}
+
+/**
+ * \brief Unflatten `FrameEventHistoryDelta`.
+ *
+ * \param[out] t The destination `FrameEventHistoryDelta`.
+ * \param[out] nh The underlying array of arrays of native handles.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR`, \p nh will be populated with `nullptr` or
+ * newly created handles. The second dimension of \p nh will be 4. Each non-null
+ * slot in \p nh will need to be deleted manually with `native_handle_delete()`.
+ */
+inline status_t unflatten(
+        IOmxBufferProducer::FrameEventHistoryDelta* t,
+        std::vector<std::vector<native_handle_t*> >* nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < 4) {
+        return NO_MEMORY;
+    }
+
+    uint32_t deltaCount = 0;
+    FlattenableUtils::read(buffer, size, deltaCount);
+    if (static_cast<size_t>(deltaCount) >
+            ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
+        return BAD_VALUE;
+    }
+    t->resize(deltaCount);
+    nh->resize(deltaCount);
+    for (size_t deltaIndex = 0; deltaIndex < deltaCount; ++deltaIndex) {
+        status_t status = unflatten(
+                &((*t)[deltaIndex]), &((*nh)[deltaIndex]),
+                buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `FrameEventHistoryDelta`.
+ *
+ * \param[in] t The source `FrameEventHistoryDelta`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate file descriptors contained in \p t.
+ */
+inline status_t flatten(
+        IOmxBufferProducer::FrameEventHistoryDelta const& t,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (t.size() > ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
+        return BAD_VALUE;
+    }
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, static_cast<uint32_t>(t.size()));
+    for (size_t deltaIndex = 0; deltaIndex < t.size(); ++deltaIndex) {
+        status_t status = flatten(t[deltaIndex], buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Wrap `::android::FrameEventHistoryData` in
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * \param[out] t The wrapper of type
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ * \param[out] nh The array of array of native handles that are referred to by
+ * members of \p t.
+ * \param[in] l The source `::android::FrameEventHistoryDelta`.
+ *
+ * On success, each member of \p nh will be either `nullptr` or a newly created
+ * native handle. All the non-`nullptr` elements must be deleted individually
+ * with `native_handle_delete()`.
+ */
+inline bool wrapAs(IOmxBufferProducer::FrameEventHistoryDelta* t,
+        std::vector<std::vector<native_handle_t*> >* nh,
+        ::android::FrameEventHistoryDelta const& l) {
+
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = l.getFdCount();
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = baseFds.get();
+    size_t numFds = baseNumFds;
+    if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (unflatten(t, nh, constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::FrameEventHistoryDelta` to
+ * `::android::FrameEventHistoryDelta`.
+ *
+ * \param[out] l The destination `::android::FrameEventHistoryDelta`.
+ * \param[in] t The source `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * This function will duplicate all file descriptors contained in \p t.
+ */
+inline bool convertTo(
+        ::android::FrameEventHistoryDelta* l,
+        IOmxBufferProducer::FrameEventHistoryDelta const& t) {
+
+    size_t const baseSize = getFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = getFdCount(t);
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = static_cast<int*>(baseFds.get());
+    size_t numFds = baseNumFds;
+    if (flatten(t, buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/ui/Region.cpp
+
+/**
+ * \brief Return the size of the buffer required to flatten `Region`.
+ *
+ * \param[in] t The input `Region`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(Region const& t) {
+    return sizeof(uint32_t) + t.size() * sizeof(::android::Rect);
+}
+
+/**
+ * \brief Unflatten `Region`.
+ *
+ * \param[out] t The destination `Region`.
+ * \param[in,out] buffer The pointer to the flat buffer.
+ * \param[in,out] size The size of the flat buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ */
+inline status_t unflatten(Region* t, void const*& buffer, size_t& size) {
+    if (size < sizeof(uint32_t)) {
+        return NO_MEMORY;
+    }
+
+    uint32_t numRects = 0;
+    FlattenableUtils::read(buffer, size, numRects);
+    if (size < numRects * sizeof(Rect)) {
+        return NO_MEMORY;
+    }
+    if (numRects > (UINT32_MAX / sizeof(Rect))) {
+        return NO_MEMORY;
+    }
+
+    t->resize(numRects);
+    for (size_t r = 0; r < numRects; ++r) {
+        ::android::Rect rect(::android::Rect::EMPTY_RECT);
+        status_t status = rect.unflatten(buffer, size);
+        if (status != NO_ERROR) {
+            return status;
+        }
+        FlattenableUtils::advance(buffer, size, sizeof(rect));
+        (*t)[r] = Rect{
+                static_cast<int32_t>(rect.left),
+                static_cast<int32_t>(rect.top),
+                static_cast<int32_t>(rect.right),
+                static_cast<int32_t>(rect.bottom)};
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `Region`.
+ *
+ * \param[in] t The source `Region`.
+ * \param[in,out] buffer The pointer to the flat buffer.
+ * \param[in,out] size The size of the flat buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ */
+inline status_t flatten(Region const& t, void*& buffer, size_t& size) {
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, static_cast<uint32_t>(t.size()));
+    for (size_t r = 0; r < t.size(); ++r) {
+        ::android::Rect rect(
+                static_cast<int32_t>(t[r].left),
+                static_cast<int32_t>(t[r].top),
+                static_cast<int32_t>(t[r].right),
+                static_cast<int32_t>(t[r].bottom));
+        status_t status = rect.flatten(buffer, size);
+        if (status != NO_ERROR) {
+            return status;
+        }
+        FlattenableUtils::advance(buffer, size, sizeof(rect));
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Convert `::android::Region` to `Region`.
+ *
+ * \param[out] t The destination `Region`.
+ * \param[in] l The source `::android::Region`.
+ */
+// convert: ::android::Region -> Region
+inline bool convertTo(Region* t, ::android::Region const& l) {
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    if (l.flatten(buffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    if (unflatten(t, constBuffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `Region` to `::android::Region`.
+ *
+ * \param[out] l The destination `::android::Region`.
+ * \param[in] t The source `Region`.
+ */
+// convert: Region -> ::android::Region
+inline bool convertTo(::android::Region* l, Region const& t) {
+    size_t const baseSize = getFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    if (flatten(t, buffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    if (l->unflatten(constBuffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/gui/IGraphicBufferProducer.cpp:
+//      IGraphicBufferProducer::QueueBufferInput
+
+/**
+ * \brief Return a lower bound on the size of the buffer required to flatten
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::QueueBufferInput`.
+ * \return A lower bound on the size of the flat buffer.
+ */
+constexpr size_t minFlattenedSize(
+        IOmxBufferProducer::QueueBufferInput const& /* t */) {
+    return sizeof(int64_t) + // timestamp
+            sizeof(int) + // isAutoTimestamp
+            sizeof(android_dataspace) + // dataSpace
+            sizeof(::android::Rect) + // crop
+            sizeof(int) + // scalingMode
+            sizeof(uint32_t) + // transform
+            sizeof(uint32_t) + // stickyTransform
+            sizeof(bool); // getFrameTimestamps
+}
+
+/**
+ * \brief Return the size of the buffer required to flatten
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::QueueBufferInput`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(IOmxBufferProducer::QueueBufferInput const& t) {
+    return minFlattenedSize(t) +
+            getFenceFlattenedSize(t.fence) +
+            getFlattenedSize(t.surfaceDamage);
+}
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::QueueBufferInput`.
+ * \return The number of file descriptors contained in \p t.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::QueueBufferInput const& t) {
+    return getFenceFdCount(t.fence);
+}
+
+/**
+ * \brief Flatten `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The source `IOmxBufferProducer::QueueBufferInput`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate the file descriptor in `t.fence`. */
+inline status_t flatten(IOmxBufferProducer::QueueBufferInput const& t,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, t.timestamp);
+    FlattenableUtils::write(buffer, size, static_cast<int>(t.isAutoTimestamp));
+    FlattenableUtils::write(buffer, size,
+            static_cast<android_dataspace_t>(t.dataSpace));
+    FlattenableUtils::write(buffer, size, ::android::Rect(
+            static_cast<int32_t>(t.crop.left),
+            static_cast<int32_t>(t.crop.top),
+            static_cast<int32_t>(t.crop.right),
+            static_cast<int32_t>(t.crop.bottom)));
+    FlattenableUtils::write(buffer, size, static_cast<int>(t.scalingMode));
+    FlattenableUtils::write(buffer, size, t.transform);
+    FlattenableUtils::write(buffer, size, t.stickyTransform);
+    FlattenableUtils::write(buffer, size, t.getFrameTimestamps);
+
+    status_t status = flattenFence(t.fence, buffer, size, fds, numFds);
+    if (status != NO_ERROR) {
+        return status;
+    }
+    return flatten(t.surfaceDamage, buffer, size);
+}
+
+/**
+ * \brief Unflatten `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[out] t The destination `IOmxBufferProducer::QueueBufferInput`.
+ * \param[out] nh The underlying native handle for `t->fence`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR` and `t->fence` contains a valid file
+ * descriptor, \p nh will be a newly created native handle holding that file
+ * descriptor. \p nh needs to be deleted with `native_handle_delete()`
+ * afterwards.
+ */
+inline status_t unflatten(
+        IOmxBufferProducer::QueueBufferInput* t, native_handle_t** nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < minFlattenedSize(*t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::read(buffer, size, t->timestamp);
+    int lIsAutoTimestamp;
+    FlattenableUtils::read(buffer, size, lIsAutoTimestamp);
+    t->isAutoTimestamp = static_cast<int32_t>(lIsAutoTimestamp);
+    android_dataspace_t lDataSpace;
+    FlattenableUtils::read(buffer, size, lDataSpace);
+    t->dataSpace = static_cast<Dataspace>(lDataSpace);
+    Rect lCrop;
+    FlattenableUtils::read(buffer, size, lCrop);
+    t->crop = Rect{
+            static_cast<int32_t>(lCrop.left),
+            static_cast<int32_t>(lCrop.top),
+            static_cast<int32_t>(lCrop.right),
+            static_cast<int32_t>(lCrop.bottom)};
+    int lScalingMode;
+    FlattenableUtils::read(buffer, size, lScalingMode);
+    t->scalingMode = static_cast<int32_t>(lScalingMode);
+    FlattenableUtils::read(buffer, size, t->transform);
+    FlattenableUtils::read(buffer, size, t->stickyTransform);
+    FlattenableUtils::read(buffer, size, t->getFrameTimestamps);
+
+    status_t status = unflattenFence(&(t->fence), nh,
+            buffer, size, fds, numFds);
+    if (status != NO_ERROR) {
+        return status;
+    }
+    return unflatten(&(t->surfaceDamage), buffer, size);
+}
+
+/**
+ * \brief Wrap `IGraphicBufferProducer::QueueBufferInput` in
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[out] t The wrapper of type
+ * `IOmxBufferProducer::QueueBufferInput`.
+ * \param[out] nh The underlying native handle for `t->fence`.
+ * \param[in] l The source `IGraphicBufferProducer::QueueBufferInput`.
+ *
+ * If the return value is `true` and `t->fence` contains a valid file
+ * descriptor, \p nh will be a newly created native handle holding that file
+ * descriptor. \p nh needs to be deleted with `native_handle_delete()`
+ * afterwards.
+ */
+inline bool wrapAs(
+        IOmxBufferProducer::QueueBufferInput* t,
+        native_handle_t** nh,
+        IGraphicBufferProducer::QueueBufferInput const& l) {
+
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = l.getFdCount();
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = baseFds.get();
+    size_t numFds = baseNumFds;
+    if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (unflatten(t, nh, constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::QueueBufferInput` to
+ * `IGraphicBufferProducer::QueueBufferInput`.
+ *
+ * \param[out] l The destination `IGraphicBufferProducer::QueueBufferInput`.
+ * \param[in] t The source `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * If `t.fence` has a valid file descriptor, it will be duplicated.
+ */
+inline bool convertTo(
+        IGraphicBufferProducer::QueueBufferInput* l,
+        IOmxBufferProducer::QueueBufferInput const& t) {
+
+    size_t const baseSize = getFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = getFdCount(t);
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = baseFds.get();
+    size_t numFds = baseNumFds;
+    if (flatten(t, buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/gui/IGraphicBufferProducer.cpp:
+//      IGraphicBufferProducer::QueueBufferOutput
+
+/**
+ * \brief Wrap `IGraphicBufferProducer::QueueBufferOutput` in
+ * `IOmxBufferProducer::QueueBufferOutput`.
+ *
+ * \param[out] t The wrapper of type
+ * `IOmxBufferProducer::QueueBufferOutput`.
+ * \param[out] nh The array of array of native handles that are referred to by
+ * members of \p t.
+ * \param[in] l The source `IGraphicBufferProducer::QueueBufferOutput`.
+ *
+ * On success, each member of \p nh will be either `nullptr` or a newly created
+ * native handle. All the non-`nullptr` elements must be deleted individually
+ * with `native_handle_delete()`.
+ */
+// wrap: IGraphicBufferProducer::QueueBufferOutput ->
+// IOmxBufferProducer::QueueBufferOutput
+inline bool wrapAs(IOmxBufferProducer::QueueBufferOutput* t,
+        std::vector<std::vector<native_handle_t*> >* nh,
+        IGraphicBufferProducer::QueueBufferOutput const& l) {
+    if (!wrapAs(&(t->frameTimestamps), nh, l.frameTimestamps)) {
+        return false;
+    }
+    t->width = l.width;
+    t->height = l.height;
+    t->transformHint = l.transformHint;
+    t->numPendingBuffers = l.numPendingBuffers;
+    t->nextFrameNumber = l.nextFrameNumber;
+    return true;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::QueueBufferOutput` to
+ * `IGraphicBufferProducer::QueueBufferOutput`.
+ *
+ * \param[out] l The destination `IGraphicBufferProducer::QueueBufferOutput`.
+ * \param[in] t The source `IOmxBufferProducer::QueueBufferOutput`.
+ *
+ * This function will duplicate all file descriptors contained in \p t.
+ */
+// convert: IOmxBufferProducer::QueueBufferOutput ->
+// IGraphicBufferProducer::QueueBufferOutput
+inline bool convertTo(
+        IGraphicBufferProducer::QueueBufferOutput* l,
+        IOmxBufferProducer::QueueBufferOutput const& t) {
+    if (!convertTo(&(l->frameTimestamps), t.frameTimestamps)) {
+        return false;
+    }
+    l->width = t.width;
+    l->height = t.height;
+    l->transformHint = t.transformHint;
+    l->numPendingBuffers = t.numPendingBuffers;
+    l->nextFrameNumber = t.nextFrameNumber;
+    return true;
+}
+
+/**
+ * \brief Convert `IGraphicBufferProducer::DisconnectMode` to
+ * `IOmxBufferProducer::DisconnectMode`.
+ *
+ * \param[in] l The source `IGraphicBufferProducer::DisconnectMode`.
+ * \return The corresponding `IOmxBufferProducer::DisconnectMode`.
+ */
+inline IOmxBufferProducer::DisconnectMode toOmxDisconnectMode(
+        IGraphicBufferProducer::DisconnectMode l) {
+    switch (l) {
+        case IGraphicBufferProducer::DisconnectMode::Api:
+            return IOmxBufferProducer::DisconnectMode::API;
+        case IGraphicBufferProducer::DisconnectMode::AllLocal:
+            return IOmxBufferProducer::DisconnectMode::ALL_LOCAL;
+    }
+    return IOmxBufferProducer::DisconnectMode::API;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::DisconnectMode` to
+ * `IGraphicBufferProducer::DisconnectMode`.
+ *
+ * \param[in] l The source `IOmxBufferProducer::DisconnectMode`.
+ * \return The corresponding `IGraphicBufferProducer::DisconnectMode`.
+ */
+inline IGraphicBufferProducer::DisconnectMode toGuiDisconnectMode(
+        IOmxBufferProducer::DisconnectMode t) {
+    switch (t) {
+        case IOmxBufferProducer::DisconnectMode::API:
+            return IGraphicBufferProducer::DisconnectMode::Api;
+        case IOmxBufferProducer::DisconnectMode::ALL_LOCAL:
+            return IGraphicBufferProducer::DisconnectMode::AllLocal;
+    }
+    return IGraphicBufferProducer::DisconnectMode::Api;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
diff --git a/media/libstagefright/omx/hal/1.0/impl/Omx.cpp b/media/libstagefright/omx/hal/1.0/impl/Omx.cpp
new file mode 100644
index 0000000..eddcc77
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/Omx.cpp
@@ -0,0 +1,209 @@
+/*
+ * 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.
+ */
+
+#include <list>
+
+#include "Omx.h"
+#include <IOMX.h>
+#include <OMXMaster.h>
+#include <OMXNodeInstance.h>
+#include <GraphicBufferSource.h>
+#include <gui/IGraphicBufferProducer.h>
+
+#include <OMX_AsString.h>
+#include <OMXUtils.h>
+
+#include "WOmxNode.h"
+#include "WOmxObserver.h"
+#include "WOmxBufferProducer.h"
+#include "WGraphicBufferSource.h"
+#include "Conversion.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+constexpr size_t kMaxNodeInstances = (1 << 16);
+
+Omx::Omx() : mMaster(new OMXMaster()) {
+}
+
+Omx::~Omx() {
+    delete mMaster;
+}
+
+Return<void> Omx::listNodes(listNodes_cb _hidl_cb) {
+    std::list<::android::IOMX::ComponentInfo> list;
+    OMX_U32 index = 0;
+    char componentName[256];
+    for (OMX_U32 index = 0;
+            mMaster->enumerateComponents(
+            componentName, sizeof(componentName), index) == OMX_ErrorNone;
+            ++index) {
+        list.push_back(::android::IOMX::ComponentInfo());
+        ::android::IOMX::ComponentInfo& info = list.back();
+        info.mName = componentName;
+        ::android::Vector<::android::String8> roles;
+        OMX_ERRORTYPE err =
+                mMaster->getRolesOfComponent(componentName, &roles);
+        if (err == OMX_ErrorNone) {
+            for (OMX_U32 i = 0; i < roles.size(); ++i) {
+                info.mRoles.push_back(roles[i]);
+            }
+        }
+    }
+
+    hidl_vec<ComponentInfo> tList;
+    tList.resize(list.size());
+    size_t i = 0;
+    for (auto const& info : list) {
+        convertTo(&(tList[i++]), info);
+    }
+    _hidl_cb(toStatus(OK), tList);
+    return Void();
+}
+
+Return<void> Omx::allocateNode(
+        const hidl_string& name,
+        const sp<IOmxObserver>& observer,
+        allocateNode_cb _hidl_cb) {
+
+    using ::android::IOMXNode;
+    using ::android::IOMXObserver;
+
+    Mutex::Autolock autoLock(mLock);
+    if (mLiveNodes.size() == kMaxNodeInstances) {
+        _hidl_cb(toStatus(NO_MEMORY), nullptr);
+        return Void();
+    }
+
+    sp<OMXNodeInstance> instance = new OMXNodeInstance(
+            this, new LWOmxObserver(observer), name);
+
+    OMX_COMPONENTTYPE *handle;
+    OMX_ERRORTYPE err = mMaster->makeComponentInstance(
+            name, &OMXNodeInstance::kCallbacks,
+            instance.get(), &handle);
+
+    if (err != OMX_ErrorNone) {
+        ALOGE("FAILED to allocate omx component '%s' err=%s(%#x)",
+                name.c_str(), asString(err), err);
+
+        _hidl_cb(toStatus(StatusFromOMXError(err)), nullptr);
+        return Void();
+    }
+    instance->setHandle(handle);
+
+    mLiveNodes.add(observer.get(), instance);
+    observer->linkToDeath(this, 0);
+    mNode2Observer.add(instance.get(), observer.get());
+
+    _hidl_cb(toStatus(OK), new TWOmxNode(instance));
+    return Void();
+}
+
+Return<void> Omx::createInputSurface(createInputSurface_cb _hidl_cb) {
+    sp<::android::IGraphicBufferProducer> bufferProducer;
+    sp<::android::IGraphicBufferSource> bufferSource;
+
+    sp<GraphicBufferSource> graphicBufferSource = new GraphicBufferSource();
+    status_t err = graphicBufferSource->initCheck();
+    if (err != OK) {
+        ALOGE("Failed to create persistent input surface: %s (%d)",
+                strerror(-err), err);
+        _hidl_cb(toStatus(err), nullptr, nullptr);
+        return Void();
+    }
+    bufferProducer = graphicBufferSource->getIGraphicBufferProducer();
+    bufferSource = graphicBufferSource;
+
+    _hidl_cb(toStatus(OK),
+            new TWOmxBufferProducer(bufferProducer),
+            new TWGraphicBufferSource(bufferSource));
+    return Void();
+}
+
+void Omx::serviceDied(uint64_t /* cookie */, wp<IBase> const& who) {
+    sp<OMXNodeInstance> instance;
+    {
+        Mutex::Autolock autoLock(mLock);
+
+        ssize_t index = mLiveNodes.indexOfKey(who);
+
+        if (index < 0) {
+            ALOGE("b/27597103, nonexistent observer on serviceDied");
+            android_errorWriteLog(0x534e4554, "27597103");
+            return;
+        }
+
+        instance = mLiveNodes.editValueAt(index);
+        mLiveNodes.removeItemsAt(index);
+        mNode2Observer.removeItem(instance.get());
+    }
+    instance->onObserverDied();
+}
+
+status_t Omx::freeNode(sp<OMXNodeInstance> const& instance) {
+    if (instance == NULL) {
+        return OK;
+    }
+
+    wp<IBase> observer;
+    {
+        Mutex::Autolock autoLock(mLock);
+        ssize_t observerIndex = mNode2Observer.indexOfKey(instance.get());
+        if (observerIndex < 0) {
+            return OK;
+        }
+        observer = mNode2Observer.valueAt(observerIndex);
+        ssize_t nodeIndex = mLiveNodes.indexOfKey(observer);
+        if (nodeIndex < 0) {
+            return OK;
+        }
+        mNode2Observer.removeItemsAt(observerIndex);
+        mLiveNodes.removeItemsAt(nodeIndex);
+    }
+
+    {
+        sp<IBase> sObserver = observer.promote();
+        if (sObserver != nullptr) {
+            sObserver->unlinkToDeath(this);
+        }
+    }
+
+    OMX_ERRORTYPE err = OMX_ErrorNone;
+    if (instance->handle() != NULL) {
+        err = mMaster->destroyComponentInstance(
+                static_cast<OMX_COMPONENTTYPE*>(instance->handle()));
+    }
+    return StatusFromOMXError(err);
+}
+
+// Methods from ::android::hidl::base::V1_0::IBase follow.
+
+IOmx* HIDL_FETCH_IOmx(const char* /* name */) {
+    return new Omx();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/impl/Omx.h b/media/libstagefright/omx/hal/1.0/impl/Omx.h
new file mode 100644
index 0000000..7633820
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/Omx.h
@@ -0,0 +1,91 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMX_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMX_H
+
+#include <android/hardware/media/omx/1.0/IOmx.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+#include <utils/threads.h>
+#include <utils/KeyedVector.h>
+#include <OmxNodeOwner.h>
+
+namespace android {
+
+struct OMXMaster;
+
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::media::omx::V1_0::IOmx;
+using ::android::hardware::media::omx::V1_0::IOmxNode;
+using ::android::hardware::media::omx::V1_0::IOmxObserver;
+using ::android::hardware::media::omx::V1_0::Status;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_death_recipient;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+using ::android::wp;
+
+using ::android::OMXMaster;
+using ::android::OmxNodeOwner;
+using ::android::OMXNodeInstance;
+
+struct Omx : public IOmx, public hidl_death_recipient, public OmxNodeOwner {
+    Omx();
+    virtual ~Omx();
+
+    // Methods from IOmx
+    Return<void> listNodes(listNodes_cb _hidl_cb) override;
+    Return<void> allocateNode(
+            const hidl_string& name,
+            const sp<IOmxObserver>& observer,
+            allocateNode_cb _hidl_cb) override;
+    Return<void> createInputSurface(createInputSurface_cb _hidl_cb) override;
+
+    // Method from hidl_death_recipient
+    void serviceDied(uint64_t cookie, const wp<IBase>& who) override;
+
+    // Method from OmxNodeOwner
+    virtual status_t freeNode(sp<OMXNodeInstance> const& instance) override;
+
+protected:
+    OMXMaster* mMaster;
+    Mutex mLock;
+    KeyedVector<wp<IBase>, sp<OMXNodeInstance> > mLiveNodes;
+    KeyedVector<OMXNodeInstance*, wp<IBase> > mNode2Observer;
+};
+
+extern "C" IOmx* HIDL_FETCH_IOmx(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMX_H
diff --git a/media/libstagefright/omx/hal/1.0/OmxNode.cpp b/media/libstagefright/omx/hal/1.0/impl/OmxNode.cpp
similarity index 85%
rename from media/libstagefright/omx/hal/1.0/OmxNode.cpp
rename to media/libstagefright/omx/hal/1.0/impl/OmxNode.cpp
index 08d1cd7..f62269f 100644
--- a/media/libstagefright/omx/hal/1.0/OmxNode.cpp
+++ b/media/libstagefright/omx/hal/1.0/impl/OmxNode.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include <IOMX.h>
 #include <OMXNodeInstance.h>
 #include "OmxNode.h"
diff --git a/media/libstagefright/omx/hal/1.0/OmxNode.h b/media/libstagefright/omx/hal/1.0/impl/OmxNode.h
similarity index 85%
rename from media/libstagefright/omx/hal/1.0/OmxNode.h
rename to media/libstagefright/omx/hal/1.0/impl/OmxNode.h
index e05e107..fc19306 100644
--- a/media/libstagefright/omx/hal/1.0/OmxNode.h
+++ b/media/libstagefright/omx/hal/1.0/impl/OmxNode.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMXNODE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_OMXNODE_H
 
diff --git a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.cpp b/media/libstagefright/omx/hal/1.0/impl/WGraphicBufferSource.cpp
similarity index 86%
rename from media/libstagefright/omx/hal/1.0/WGraphicBufferSource.cpp
rename to media/libstagefright/omx/hal/1.0/impl/WGraphicBufferSource.cpp
index 0ec31f2..9de8e3e 100644
--- a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.cpp
+++ b/media/libstagefright/omx/hal/1.0/impl/WGraphicBufferSource.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include "WGraphicBufferSource.h"
 #include "Conversion.h"
 #include "WOmxNode.h"
diff --git a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.h b/media/libstagefright/omx/hal/1.0/impl/WGraphicBufferSource.h
similarity index 85%
rename from media/libstagefright/omx/hal/1.0/WGraphicBufferSource.h
rename to media/libstagefright/omx/hal/1.0/impl/WGraphicBufferSource.h
index 66977ad..0b9f2ed 100644
--- a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.h
+++ b/media/libstagefright/omx/hal/1.0/impl/WGraphicBufferSource.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WGRAPHICBUFFERSOURCE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WGRAPHICBUFFERSOURCE_H
 
diff --git a/media/libstagefright/omx/hal/1.0/impl/WOmx.cpp b/media/libstagefright/omx/hal/1.0/impl/WOmx.cpp
new file mode 100644
index 0000000..0fa8c4c
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmx.cpp
@@ -0,0 +1,130 @@
+/*
+ * 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.
+ */
+
+#include "WOmx.h"
+#include "WOmxNode.h"
+#include "WOmxObserver.h"
+#include "WOmxBufferProducer.h"
+#include "WGraphicBufferSource.h"
+#include "Conversion.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+// LWOmx
+LWOmx::LWOmx(sp<IOmx> const& base) : mBase(base) {
+}
+
+status_t LWOmx::listNodes(List<IOMX::ComponentInfo>* list) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->listNodes(
+            [&fnStatus, list](
+                    Status status,
+                    hidl_vec<IOmx::ComponentInfo> const& nodeList) {
+                fnStatus = toStatusT(status);
+                list->clear();
+                for (size_t i = 0; i < nodeList.size(); ++i) {
+                    auto newInfo = list->insert(
+                            list->end(), IOMX::ComponentInfo());
+                    convertTo(&*newInfo, nodeList[i]);
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmx::allocateNode(
+        char const* name,
+        sp<IOMXObserver> const& observer,
+        sp<IOMXNode>* omxNode) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->allocateNode(
+            name, new TWOmxObserver(observer),
+            [&fnStatus, omxNode](Status status, sp<IOmxNode> const& node) {
+                fnStatus = toStatusT(status);
+                *omxNode = new LWOmxNode(node);
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmx::createInputSurface(
+        sp<::android::IGraphicBufferProducer>* bufferProducer,
+        sp<::android::IGraphicBufferSource>* bufferSource) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->createInputSurface(
+            [&fnStatus, bufferProducer, bufferSource] (
+                    Status status,
+                    sp<IOmxBufferProducer> const& tProducer,
+                    sp<IGraphicBufferSource> const& tSource) {
+                fnStatus = toStatusT(status);
+                *bufferProducer = new LWOmxBufferProducer(tProducer);
+                *bufferSource = new LWGraphicBufferSource(tSource);
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+::android::IBinder* LWOmx::onAsBinder() {
+    return nullptr;
+}
+
+// TWOmx
+TWOmx::TWOmx(sp<IOMX> const& base) : mBase(base) {
+}
+
+Return<void> TWOmx::listNodes(listNodes_cb _hidl_cb) {
+    List<IOMX::ComponentInfo> lList;
+    Status status = toStatus(mBase->listNodes(&lList));
+
+    hidl_vec<IOmx::ComponentInfo> tList;
+    tList.resize(lList.size());
+    size_t i = 0;
+    for (auto const& lInfo : lList) {
+        convertTo(&(tList[i++]), lInfo);
+    }
+    _hidl_cb(status, tList);
+    return Void();
+}
+
+Return<void> TWOmx::allocateNode(
+        const hidl_string& name,
+        const sp<IOmxObserver>& observer,
+        allocateNode_cb _hidl_cb) {
+    sp<IOMXNode> omxNode;
+    Status status = toStatus(mBase->allocateNode(
+            name, new LWOmxObserver(observer), &omxNode));
+    _hidl_cb(status, new TWOmxNode(omxNode));
+    return Void();
+}
+
+Return<void> TWOmx::createInputSurface(createInputSurface_cb _hidl_cb) {
+    sp<::android::IGraphicBufferProducer> lProducer;
+    sp<::android::IGraphicBufferSource> lSource;
+    status_t status = mBase->createInputSurface(&lProducer, &lSource);
+    _hidl_cb(toStatus(status),
+             new TWOmxBufferProducer(lProducer),
+             new TWGraphicBufferSource(lSource));
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/WOmx.h b/media/libstagefright/omx/hal/1.0/impl/WOmx.h
similarity index 75%
rename from media/libstagefright/omx/hal/1.0/WOmx.h
rename to media/libstagefright/omx/hal/1.0/impl/WOmx.h
index b07c4f2..5618d27 100644
--- a/media/libstagefright/omx/hal/1.0/WOmx.h
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmx.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMX_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMX_H
 
@@ -62,6 +78,7 @@
             const hidl_string& name,
             const sp<IOmxObserver>& observer,
             allocateNode_cb _hidl_cb) override;
+    Return<void> createInputSurface(createInputSurface_cb _hidl_cb) override;
 
 };
 
diff --git a/media/libstagefright/omx/hal/1.0/impl/WOmxBufferProducer.cpp b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferProducer.cpp
new file mode 100644
index 0000000..a459c9f
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferProducer.cpp
@@ -0,0 +1,594 @@
+/*
+ * 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.
+ */
+
+#include "WOmxBufferProducer.h"
+#include "WOmxProducerListener.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+// TWOmxBufferProducer
+TWOmxBufferProducer::TWOmxBufferProducer(
+        sp<IGraphicBufferProducer> const& base):
+    mBase(base) {
+}
+
+Return<void> TWOmxBufferProducer::requestBuffer(
+        int32_t slot, requestBuffer_cb _hidl_cb) {
+    sp<GraphicBuffer> buf;
+    status_t status = mBase->requestBuffer(slot, &buf);
+    AnwBuffer anwBuffer;
+    wrapAs(&anwBuffer, *buf);
+    _hidl_cb(toStatus(status), anwBuffer);
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::setMaxDequeuedBufferCount(
+        int32_t maxDequeuedBuffers) {
+    return toStatus(mBase->setMaxDequeuedBufferCount(
+            static_cast<int>(maxDequeuedBuffers)));
+}
+
+Return<Status> TWOmxBufferProducer::setAsyncMode(bool async) {
+    return toStatus(mBase->setAsyncMode(async));
+}
+
+Return<void> TWOmxBufferProducer::dequeueBuffer(
+        uint32_t width, uint32_t height,
+        PixelFormat format, uint32_t usage,
+        bool getFrameTimestamps, dequeueBuffer_cb _hidl_cb) {
+    int slot;
+    sp<Fence> fence;
+    ::android::FrameEventHistoryDelta outTimestamps;
+    status_t status = mBase->dequeueBuffer(
+            &slot, &fence,
+            width, height,
+            static_cast<::android::PixelFormat>(format), usage,
+            getFrameTimestamps ? &outTimestamps : nullptr);
+
+    hidl_handle tFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tFence, &nh, *fence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::dequeueBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+    FrameEventHistoryDelta tOutTimestamps;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (getFrameTimestamps && !wrapAs(&tOutTimestamps, &nhAA, outTimestamps)) {
+        native_handle_delete(nh);
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::dequeueBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+
+    _hidl_cb(toStatus(status),
+            static_cast<int32_t>(slot),
+            tFence,
+            tOutTimestamps);
+    native_handle_delete(nh);
+    if (getFrameTimestamps) {
+        for (auto& nhA : nhAA) {
+            for (auto& handle : nhA) {
+                if (handle != nullptr) {
+                    native_handle_delete(handle);
+                }
+            }
+        }
+    }
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::detachBuffer(int32_t slot) {
+    return toStatus(mBase->detachBuffer(slot));
+}
+
+Return<void> TWOmxBufferProducer::detachNextBuffer(
+        detachNextBuffer_cb _hidl_cb) {
+    sp<GraphicBuffer> outBuffer;
+    sp<Fence> outFence;
+    status_t status = mBase->detachNextBuffer(&outBuffer, &outFence);
+
+    AnwBuffer tBuffer;
+    wrapAs(&tBuffer, *outBuffer);
+    hidl_handle tFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tFence, &nh, *outFence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::detachNextBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+
+    _hidl_cb(toStatus(status), tBuffer, tFence);
+    native_handle_delete(nh);
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::attachBuffer(
+        const AnwBuffer& buffer,
+        attachBuffer_cb _hidl_cb) {
+    int outSlot;
+    sp<GraphicBuffer> lBuffer = new GraphicBuffer();
+    if (!convertTo(lBuffer.get(), buffer)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::attachBuffer(): "
+                "Cannot convert AnwBuffer to GraphicBuffer"));
+    }
+    status_t status = mBase->attachBuffer(&outSlot, lBuffer);
+
+    _hidl_cb(toStatus(status), static_cast<int32_t>(outSlot));
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::queueBuffer(
+        int32_t slot, const QueueBufferInput& input,
+        queueBuffer_cb _hidl_cb) {
+    IGraphicBufferProducer::QueueBufferInput lInput(
+            0, false, HAL_DATASPACE_UNKNOWN,
+            ::android::Rect(0, 0, 1, 1),
+            NATIVE_WINDOW_SCALING_MODE_FREEZE,
+            0, ::android::Fence::NO_FENCE);
+    if (!convertTo(&lInput, input)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::queueBuffer(): "
+                "Cannot convert IOmxBufferProducer::QueueBufferInput "
+                "to IGraphicBufferProducer::QueueBufferInput"));
+    }
+    IGraphicBufferProducer::QueueBufferOutput lOutput;
+    status_t status = mBase->queueBuffer(
+            static_cast<int>(slot), lInput, &lOutput);
+
+    QueueBufferOutput tOutput;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (!wrapAs(&tOutput, &nhAA, lOutput)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::queueBuffer(): "
+                "Cannot wrap IGraphicBufferProducer::QueueBufferOutput "
+                "in IOmxBufferProducer::QueueBufferOutput"));
+    }
+
+    _hidl_cb(toStatus(status), tOutput);
+    for (auto& nhA : nhAA) {
+        for (auto& nh : nhA) {
+            if (nh != nullptr) {
+                native_handle_delete(nh);
+            }
+        }
+    }
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::cancelBuffer(
+        int32_t slot, const hidl_handle& fence) {
+    sp<Fence> lFence = new Fence();
+    if (!convertTo(lFence.get(), fence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::cancelBuffer(): "
+                "Cannot convert hidl_handle to Fence"));
+    }
+    return toStatus(mBase->cancelBuffer(static_cast<int>(slot), lFence));
+}
+
+Return<void> TWOmxBufferProducer::query(int32_t what, query_cb _hidl_cb) {
+    int lValue;
+    int lReturn = mBase->query(static_cast<int>(what), &lValue);
+    _hidl_cb(static_cast<int32_t>(lReturn), static_cast<int32_t>(lValue));
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::connect(
+        const sp<IOmxProducerListener>& listener,
+        int32_t api, bool producerControlledByApp, connect_cb _hidl_cb) {
+    sp<IProducerListener> lListener = new LWOmxProducerListener(listener);
+    IGraphicBufferProducer::QueueBufferOutput lOutput;
+    status_t status = mBase->connect(lListener,
+            static_cast<int>(api),
+            producerControlledByApp,
+            &lOutput);
+
+    QueueBufferOutput tOutput;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (!wrapAs(&tOutput, &nhAA, lOutput)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::connect(): "
+                "Cannot wrap IGraphicBufferProducer::QueueBufferOutput "
+                "in IOmxBufferProducer::QueueBufferOutput"));
+    }
+
+    _hidl_cb(toStatus(status), tOutput);
+    for (auto& nhA : nhAA) {
+        for (auto& nh : nhA) {
+            if (nh != nullptr) {
+                native_handle_delete(nh);
+            }
+        }
+    }
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::disconnect(
+        int32_t api, DisconnectMode mode) {
+    return toStatus(mBase->disconnect(
+            static_cast<int>(api),
+            toGuiDisconnectMode(mode)));
+}
+
+Return<Status> TWOmxBufferProducer::setSidebandStream(const hidl_handle& stream) {
+    return toStatus(mBase->setSidebandStream(NativeHandle::create(
+            native_handle_clone(stream), true)));
+}
+
+Return<void> TWOmxBufferProducer::allocateBuffers(
+        uint32_t width, uint32_t height, PixelFormat format, uint32_t usage) {
+    mBase->allocateBuffers(
+            width, height,
+            static_cast<::android::PixelFormat>(format),
+            usage);
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::allowAllocation(bool allow) {
+    return toStatus(mBase->allowAllocation(allow));
+}
+
+Return<Status> TWOmxBufferProducer::setGenerationNumber(uint32_t generationNumber) {
+    return toStatus(mBase->setGenerationNumber(generationNumber));
+}
+
+Return<void> TWOmxBufferProducer::getConsumerName(getConsumerName_cb _hidl_cb) {
+    _hidl_cb(mBase->getConsumerName().string());
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::setSharedBufferMode(bool sharedBufferMode) {
+    return toStatus(mBase->setSharedBufferMode(sharedBufferMode));
+}
+
+Return<Status> TWOmxBufferProducer::setAutoRefresh(bool autoRefresh) {
+    return toStatus(mBase->setAutoRefresh(autoRefresh));
+}
+
+Return<Status> TWOmxBufferProducer::setDequeueTimeout(int64_t timeoutNs) {
+    return toStatus(mBase->setDequeueTimeout(timeoutNs));
+}
+
+Return<void> TWOmxBufferProducer::getLastQueuedBuffer(
+        getLastQueuedBuffer_cb _hidl_cb) {
+    sp<GraphicBuffer> lOutBuffer = new GraphicBuffer();
+    sp<Fence> lOutFence = new Fence();
+    float lOutTransformMatrix[16];
+    status_t status = mBase->getLastQueuedBuffer(
+            &lOutBuffer, &lOutFence, lOutTransformMatrix);
+
+    AnwBuffer tOutBuffer;
+    wrapAs(&tOutBuffer, *lOutBuffer);
+    hidl_handle tOutFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tOutFence, &nh, *lOutFence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::getLastQueuedBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+    hidl_array<float, 16> tOutTransformMatrix(lOutTransformMatrix);
+
+    _hidl_cb(toStatus(status), tOutBuffer, tOutFence, tOutTransformMatrix);
+    native_handle_delete(nh);
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::getFrameTimestamps(
+        getFrameTimestamps_cb _hidl_cb) {
+    ::android::FrameEventHistoryDelta lDelta;
+    mBase->getFrameTimestamps(&lDelta);
+
+    FrameEventHistoryDelta tDelta;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (!wrapAs(&tDelta, &nhAA, lDelta)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::getFrameTimestamps(): "
+                "Cannot wrap ::android::FrameEventHistoryDelta "
+                "in FrameEventHistoryDelta"));
+    }
+
+    _hidl_cb(tDelta);
+    for (auto& nhA : nhAA) {
+        for (auto& nh : nhA) {
+            if (nh != nullptr) {
+                native_handle_delete(nh);
+            }
+        }
+    }
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::getUniqueId(getUniqueId_cb _hidl_cb) {
+    uint64_t outId;
+    status_t status = mBase->getUniqueId(&outId);
+    _hidl_cb(toStatus(status), outId);
+    return Void();
+}
+
+// LWOmxBufferProducer
+
+LWOmxBufferProducer::LWOmxBufferProducer(sp<IOmxBufferProducer> const& base) :
+    mBase(base) {
+}
+
+status_t LWOmxBufferProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
+    *buf = new GraphicBuffer();
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->requestBuffer(
+            static_cast<int32_t>(slot),
+            [&fnStatus, &buf] (Status status, AnwBuffer const& buffer) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(buf->get(), buffer)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::setMaxDequeuedBufferCount(
+        int maxDequeuedBuffers) {
+    return toStatusT(mBase->setMaxDequeuedBufferCount(
+            static_cast<int32_t>(maxDequeuedBuffers)));
+}
+
+status_t LWOmxBufferProducer::setAsyncMode(bool async) {
+    return toStatusT(mBase->setAsyncMode(async));
+}
+
+status_t LWOmxBufferProducer::dequeueBuffer(
+        int* slot, sp<Fence>* fence,
+        uint32_t w, uint32_t h, ::android::PixelFormat format,
+        uint32_t usage, FrameEventHistoryDelta* outTimestamps) {
+    *fence = new Fence();
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->dequeueBuffer(
+            w, h, static_cast<PixelFormat>(format), usage,
+            outTimestamps != nullptr,
+            [&fnStatus, slot, fence, outTimestamps] (
+                    Status status,
+                    int32_t tSlot,
+                    hidl_handle const& tFence,
+                    IOmxBufferProducer::FrameEventHistoryDelta const& tTs) {
+                fnStatus = toStatusT(status);
+                *slot = tSlot;
+                if (!convertTo(fence->get(), tFence)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                if (outTimestamps && !convertTo(outTimestamps, tTs)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::detachBuffer(int slot) {
+    return toStatusT(mBase->detachBuffer(static_cast<int>(slot)));
+}
+
+status_t LWOmxBufferProducer::detachNextBuffer(
+        sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence) {
+    *outBuffer = new GraphicBuffer();
+    *outFence = new Fence();
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->detachNextBuffer(
+            [&fnStatus, outBuffer, outFence] (
+                    Status status,
+                    AnwBuffer const& tBuffer,
+                    hidl_handle const& tFence) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(outFence->get(), tFence)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                if (!convertTo(outBuffer->get(), tBuffer)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::attachBuffer(
+        int* outSlot, const sp<GraphicBuffer>& buffer) {
+    AnwBuffer tBuffer;
+    wrapAs(&tBuffer, *buffer);
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->attachBuffer(tBuffer,
+            [&fnStatus, outSlot] (Status status, int32_t slot) {
+                fnStatus = toStatusT(status);
+                *outSlot = slot;
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::queueBuffer(
+        int slot,
+        const QueueBufferInput& input,
+        QueueBufferOutput* output) {
+    IOmxBufferProducer::QueueBufferInput tInput;
+    native_handle_t* nh;
+    if (!wrapAs(&tInput, &nh, input)) {
+        return BAD_VALUE;
+    }
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->queueBuffer(slot, tInput,
+            [&fnStatus, output] (
+                    Status status,
+                    IOmxBufferProducer::QueueBufferOutput const& tOutput) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(output, tOutput)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    native_handle_delete(nh);
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::cancelBuffer(int slot, const sp<Fence>& fence) {
+    hidl_handle tFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tFence, &nh, *fence)) {
+        return BAD_VALUE;
+    }
+
+    status_t status = toStatusT(mBase->cancelBuffer(
+            static_cast<int32_t>(slot), tFence));
+    native_handle_delete(nh);
+    return status;
+}
+
+int LWOmxBufferProducer::query(int what, int* value) {
+    int result;
+    status_t transStatus = toStatusT(mBase->query(
+            static_cast<int32_t>(what),
+            [&result, value] (int32_t tResult, int32_t tValue) {
+                result = static_cast<int>(tResult);
+                *value = static_cast<int>(tValue);
+            }));
+    return transStatus == NO_ERROR ? result : static_cast<int>(transStatus);
+}
+
+status_t LWOmxBufferProducer::connect(
+        const sp<IProducerListener>& listener, int api,
+        bool producerControlledByApp, QueueBufferOutput* output) {
+    sp<IOmxProducerListener> tListener = new TWOmxProducerListener(listener);
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->connect(
+            tListener, static_cast<int32_t>(api), producerControlledByApp,
+            [&fnStatus, output] (
+                    Status status,
+                    IOmxBufferProducer::QueueBufferOutput const& tOutput) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(output, tOutput)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::disconnect(int api, DisconnectMode mode) {
+    return toStatusT(mBase->disconnect(
+            static_cast<int32_t>(api), toOmxDisconnectMode(mode)));
+}
+
+status_t LWOmxBufferProducer::setSidebandStream(
+        const sp<NativeHandle>& stream) {
+    return toStatusT(mBase->setSidebandStream(stream->handle()));
+}
+
+void LWOmxBufferProducer::allocateBuffers(uint32_t width, uint32_t height,
+        ::android::PixelFormat format, uint32_t usage) {
+    mBase->allocateBuffers(
+            width, height, static_cast<PixelFormat>(format), usage);
+}
+
+status_t LWOmxBufferProducer::allowAllocation(bool allow) {
+    return toStatusT(mBase->allowAllocation(allow));
+}
+
+status_t LWOmxBufferProducer::setGenerationNumber(uint32_t generationNumber) {
+    return toStatusT(mBase->setGenerationNumber(generationNumber));
+}
+
+String8 LWOmxBufferProducer::getConsumerName() const {
+    String8 lName;
+    mBase->getConsumerName([&lName] (hidl_string const& name) {
+                lName = name.c_str();
+            });
+    return lName;
+}
+
+status_t LWOmxBufferProducer::setSharedBufferMode(bool sharedBufferMode) {
+    return toStatusT(mBase->setSharedBufferMode(sharedBufferMode));
+}
+
+status_t LWOmxBufferProducer::setAutoRefresh(bool autoRefresh) {
+    return toStatusT(mBase->setAutoRefresh(autoRefresh));
+}
+
+status_t LWOmxBufferProducer::setDequeueTimeout(nsecs_t timeout) {
+    return toStatusT(mBase->setDequeueTimeout(static_cast<int64_t>(timeout)));
+}
+
+status_t LWOmxBufferProducer::getLastQueuedBuffer(
+        sp<GraphicBuffer>* outBuffer,
+        sp<Fence>* outFence,
+        float outTransformMatrix[16]) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->getLastQueuedBuffer(
+            [&fnStatus, outBuffer, outFence, &outTransformMatrix] (
+                    Status status,
+                    AnwBuffer const& buffer,
+                    hidl_handle const& fence,
+                    hidl_array<float, 16> const& transformMatrix) {
+                fnStatus = toStatusT(status);
+                *outBuffer = new GraphicBuffer();
+                if (!convertTo(outBuffer->get(), buffer)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                *outFence = new Fence();
+                if (!convertTo(outFence->get(), fence)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                std::copy(transformMatrix.data(),
+                        transformMatrix.data() + 16,
+                        outTransformMatrix);
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+void LWOmxBufferProducer::getFrameTimestamps(FrameEventHistoryDelta* outDelta) {
+    mBase->getFrameTimestamps([outDelta] (
+            IOmxBufferProducer::FrameEventHistoryDelta const& tDelta) {
+                convertTo(outDelta, tDelta);
+            });
+}
+
+status_t LWOmxBufferProducer::getUniqueId(uint64_t* outId) const {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->getUniqueId(
+            [&fnStatus, outId] (Status status, uint64_t id) {
+                fnStatus = toStatusT(status);
+                *outId = id;
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+::android::IBinder* LWOmxBufferProducer::onAsBinder() {
+    return nullptr;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/impl/WOmxBufferProducer.h b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferProducer.h
new file mode 100644
index 0000000..a991f49
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferProducer.h
@@ -0,0 +1,142 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERPRODUCER_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERPRODUCER_H
+
+#include <android/hardware/media/omx/1.0/IOmxBufferProducer.h>
+#include <binder/Binder.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/IProducerListener.h>
+#include "Conversion.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+using ::android::hardware::media::omx::V1_0::IOmxBufferProducer;
+using ::android::hardware::media::omx::V1_0::IOmxProducerListener;
+using ::android::hardware::media::omx::V1_0::Status;
+using ::android::hardware::media::V1_0::AnwBuffer;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+using ::android::IGraphicBufferProducer;
+using ::android::IProducerListener;
+
+struct TWOmxBufferProducer : public IOmxBufferProducer {
+    sp<IGraphicBufferProducer> mBase;
+    TWOmxBufferProducer(sp<IGraphicBufferProducer> const& base);
+    Return<void> requestBuffer(int32_t slot, requestBuffer_cb _hidl_cb)
+            override;
+    Return<Status> setMaxDequeuedBufferCount(int32_t maxDequeuedBuffers)
+            override;
+    Return<Status> setAsyncMode(bool async) override;
+    Return<void> dequeueBuffer(
+            uint32_t width, uint32_t height, PixelFormat format, uint32_t usage,
+            bool getFrameTimestamps, dequeueBuffer_cb _hidl_cb) override;
+    Return<Status> detachBuffer(int32_t slot) override;
+    Return<void> detachNextBuffer(detachNextBuffer_cb _hidl_cb) override;
+    Return<void> attachBuffer(const AnwBuffer& buffer, attachBuffer_cb _hidl_cb)
+            override;
+    Return<void> queueBuffer(
+            int32_t slot, const IOmxBufferProducer::QueueBufferInput& input,
+            queueBuffer_cb _hidl_cb) override;
+    Return<Status> cancelBuffer(int32_t slot, const hidl_handle& fence)
+            override;
+    Return<void> query(int32_t what, query_cb _hidl_cb) override;
+    Return<void> connect(const sp<IOmxProducerListener>& listener,
+            int32_t api, bool producerControlledByApp,
+            connect_cb _hidl_cb) override;
+    Return<Status> disconnect(
+            int32_t api,
+            IOmxBufferProducer::DisconnectMode mode) override;
+    Return<Status> setSidebandStream(const hidl_handle& stream) override;
+    Return<void> allocateBuffers(
+            uint32_t width, uint32_t height,
+            PixelFormat format, uint32_t usage) override;
+    Return<Status> allowAllocation(bool allow) override;
+    Return<Status> setGenerationNumber(uint32_t generationNumber) override;
+    Return<void> getConsumerName(getConsumerName_cb _hidl_cb) override;
+    Return<Status> setSharedBufferMode(bool sharedBufferMode) override;
+    Return<Status> setAutoRefresh(bool autoRefresh) override;
+    Return<Status> setDequeueTimeout(int64_t timeoutNs) override;
+    Return<void> getLastQueuedBuffer(getLastQueuedBuffer_cb _hidl_cb) override;
+    Return<void> getFrameTimestamps(getFrameTimestamps_cb _hidl_cb) override;
+    Return<void> getUniqueId(getUniqueId_cb _hidl_cb) override;
+};
+
+struct LWOmxBufferProducer : public IGraphicBufferProducer {
+    sp<IOmxBufferProducer> mBase;
+    LWOmxBufferProducer(sp<IOmxBufferProducer> const& base);
+
+    status_t requestBuffer(int slot, sp<GraphicBuffer>* buf) override;
+    status_t setMaxDequeuedBufferCount(int maxDequeuedBuffers) override;
+    status_t setAsyncMode(bool async) override;
+    status_t dequeueBuffer(int* slot, sp<Fence>* fence, uint32_t w,
+            uint32_t h, ::android::PixelFormat format, uint32_t usage,
+            FrameEventHistoryDelta* outTimestamps) override;
+    status_t detachBuffer(int slot) override;
+    status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence)
+            override;
+    status_t attachBuffer(int* outSlot, const sp<GraphicBuffer>& buffer)
+            override;
+    status_t queueBuffer(int slot,
+            const QueueBufferInput& input,
+            QueueBufferOutput* output) override;
+    status_t cancelBuffer(int slot, const sp<Fence>& fence) override;
+    int query(int what, int* value) override;
+    status_t connect(const sp<IProducerListener>& listener, int api,
+            bool producerControlledByApp, QueueBufferOutput* output) override;
+    status_t disconnect(int api, DisconnectMode mode = DisconnectMode::Api)
+            override;
+    status_t setSidebandStream(const sp<NativeHandle>& stream) override;
+    void allocateBuffers(uint32_t width, uint32_t height,
+            ::android::PixelFormat format, uint32_t usage) override;
+    status_t allowAllocation(bool allow) override;
+    status_t setGenerationNumber(uint32_t generationNumber) override;
+    String8 getConsumerName() const override;
+    status_t setSharedBufferMode(bool sharedBufferMode) override;
+    status_t setAutoRefresh(bool autoRefresh) override;
+    status_t setDequeueTimeout(nsecs_t timeout) override;
+    status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
+          sp<Fence>* outFence, float outTransformMatrix[16]) override;
+    void getFrameTimestamps(FrameEventHistoryDelta* outDelta) override;
+    status_t getUniqueId(uint64_t* outId) const override;
+protected:
+    ::android::IBinder* onAsBinder() override;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERPRODUCER_H
diff --git a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.cpp b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferSource.cpp
similarity index 77%
rename from media/libstagefright/omx/hal/1.0/WOmxBufferSource.cpp
rename to media/libstagefright/omx/hal/1.0/impl/WOmxBufferSource.cpp
index 79eb1be..2e00894 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.cpp
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferSource.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include "WOmxBufferSource.h"
 #include "Conversion.h"
 #include <utils/String8.h>
@@ -82,7 +98,10 @@
 Return<void> TWOmxBufferSource::onInputBufferEmptied(
         uint32_t buffer, hidl_handle const& fence) {
     OMXFenceParcelable fenceParcelable;
-    wrapAs(&fenceParcelable, fence);
+    if (!convertTo(&fenceParcelable, fence)) {
+      return ::android::hardware::Status::fromExceptionCode(
+              ::android::hardware::Status::EX_BAD_PARCELABLE);
+    }
     return toHardwareStatus(mBase->onInputBufferEmptied(
             static_cast<int32_t>(buffer), fenceParcelable));
 }
diff --git a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.h b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferSource.h
similarity index 79%
rename from media/libstagefright/omx/hal/1.0/WOmxBufferSource.h
rename to media/libstagefright/omx/hal/1.0/impl/WOmxBufferSource.h
index 3ba9453..a2e940f 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.h
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxBufferSource.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERSOURCE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERSOURCE_H
 
diff --git a/media/libstagefright/omx/hal/1.0/WOmxNode.cpp b/media/libstagefright/omx/hal/1.0/impl/WOmxNode.cpp
similarity index 92%
rename from media/libstagefright/omx/hal/1.0/WOmxNode.cpp
rename to media/libstagefright/omx/hal/1.0/impl/WOmxNode.cpp
index 0e781d8..df3ef78 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxNode.cpp
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxNode.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include <IOMX.h>
 #include <OMXNodeInstance.h>
 #include "WOmxNode.h"
@@ -50,7 +66,6 @@
 status_t LWOmxNode::setParameter(
         OMX_INDEXTYPE index, const void *params, size_t size) {
     hidl_vec<uint8_t> tParams = inHidlBytes(params, size);
-    tParams = inHidlBytes(params, size);
     return toStatusT(mBase->setParameter(
             toRawIndexType(index), tParams));
 }
@@ -102,7 +117,8 @@
             [&fnStatus, sidebandHandle](
                     Status status, hidl_handle const& outSidebandHandle) {
                 fnStatus = toStatusT(status);
-                *sidebandHandle = native_handle_clone(outSidebandHandle);
+                *sidebandHandle = outSidebandHandle == nullptr ?
+                        nullptr : native_handle_clone(outSidebandHandle);
             }));
     return transStatus == NO_ERROR ? fnStatus : transStatus;
 }
@@ -229,8 +245,8 @@
 }
 
 // TODO: this is temporary, will be removed when quirks move to OMX side.
-status_t LWOmxNode::setQuirks(OMX_U32 /* quirks */) {
-    return NO_ERROR;
+status_t LWOmxNode::setQuirks(OMX_U32 quirks) {
+    return toStatusT(mBase->setQuirks(static_cast<uint32_t>(quirks)));;
 }
 
 ::android::IBinder* LWOmxNode::onAsBinder() {
@@ -306,7 +322,7 @@
 Return<void> TWOmxNode::configureVideoTunnelMode(
         uint32_t portIndex, bool tunneled, uint32_t audioHwSync,
         configureVideoTunnelMode_cb _hidl_cb) {
-    native_handle_t* sidebandHandle;
+    native_handle_t* sidebandHandle = nullptr;
     Status status = toStatus(mBase->configureVideoTunnelMode(
             portIndex,
             toEnumBool(tunneled),
@@ -412,6 +428,10 @@
     return toStatus(mBase->dispatchMessage(lMsg));
 }
 
+Return<void> TWOmxNode::setQuirks(uint32_t quirks) {
+    mBase->setQuirks(static_cast<OMX_U32>(quirks));
+    return Void();
+}
 
 }  // namespace implementation
 }  // namespace V1_0
diff --git a/media/libstagefright/omx/hal/1.0/WOmxNode.h b/media/libstagefright/omx/hal/1.0/impl/WOmxNode.h
similarity index 89%
rename from media/libstagefright/omx/hal/1.0/WOmxNode.h
rename to media/libstagefright/omx/hal/1.0/impl/WOmxNode.h
index 3a459d6..d606f3a 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxNode.h
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxNode.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXNODE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXNODE_H
 
@@ -137,6 +153,7 @@
             hidl_string const& parameterName,
             getExtensionIndex_cb _hidl_cb) override;
     Return<Status> dispatchMessage(Message const& msg) override;
+    Return<void> setQuirks(uint32_t quirks) override;
 };
 
 }  // namespace implementation
diff --git a/media/libstagefright/omx/hal/1.0/WOmxObserver.cpp b/media/libstagefright/omx/hal/1.0/impl/WOmxObserver.cpp
similarity index 70%
rename from media/libstagefright/omx/hal/1.0/WOmxObserver.cpp
rename to media/libstagefright/omx/hal/1.0/impl/WOmxObserver.cpp
index f3ad8d3..87e7961 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxObserver.cpp
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxObserver.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include "WOmxObserver.h"
 
 #include <vector>
diff --git a/media/libstagefright/omx/hal/1.0/WOmxObserver.h b/media/libstagefright/omx/hal/1.0/impl/WOmxObserver.h
similarity index 73%
rename from media/libstagefright/omx/hal/1.0/WOmxObserver.h
rename to media/libstagefright/omx/hal/1.0/impl/WOmxObserver.h
index c8ab296..85593c3 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxObserver.h
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxObserver.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXOBSERVER_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXOBSERVER_H
 
diff --git a/media/libstagefright/omx/hal/1.0/impl/WOmxProducerListener.cpp b/media/libstagefright/omx/hal/1.0/impl/WOmxProducerListener.cpp
new file mode 100644
index 0000000..fa6e9aa
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxProducerListener.cpp
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+#include "WOmxProducerListener.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+// TWOmxProducerListener
+TWOmxProducerListener::TWOmxProducerListener(
+        sp<IProducerListener> const& base):
+    mBase(base) {
+}
+
+Return<void> TWOmxProducerListener::onBufferReleased() {
+    mBase->onBufferReleased();
+    return Void();
+}
+
+Return<bool> TWOmxProducerListener::needsReleaseNotify() {
+    return mBase->needsReleaseNotify();
+}
+
+// LWOmxProducerListener
+LWOmxProducerListener::LWOmxProducerListener(
+        sp<IOmxProducerListener> const& base):
+    mBase(base) {
+}
+
+void LWOmxProducerListener::onBufferReleased() {
+    mBase->onBufferReleased();
+}
+
+bool LWOmxProducerListener::needsReleaseNotify() {
+    return static_cast<bool>(mBase->needsReleaseNotify());
+}
+
+::android::IBinder* LWOmxProducerListener::onAsBinder() {
+    return nullptr;
+}
+
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/impl/WOmxProducerListener.h b/media/libstagefright/omx/hal/1.0/impl/WOmxProducerListener.h
new file mode 100644
index 0000000..b93a555
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/impl/WOmxProducerListener.h
@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXPRODUCERLISTENER_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXPRODUCERLISTENER_H
+
+#include <android/hardware/media/omx/1.0/IOmxProducerListener.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+#include <binder/IBinder.h>
+#include <gui/IProducerListener.h>
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::media::omx::V1_0::IOmxProducerListener;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+using ::android::IProducerListener;
+
+struct TWOmxProducerListener : public IOmxProducerListener {
+    sp<IProducerListener> mBase;
+    TWOmxProducerListener(sp<IProducerListener> const& base);
+    Return<void> onBufferReleased() override;
+    Return<bool> needsReleaseNotify() override;
+};
+
+class LWOmxProducerListener : public IProducerListener {
+public:
+    sp<IOmxProducerListener> mBase;
+    LWOmxProducerListener(sp<IOmxProducerListener> const& base);
+    void onBufferReleased() override;
+    bool needsReleaseNotify() override;
+protected:
+    ::android::IBinder* onAsBinder() override;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXPRODUCERLISTENER_H
diff --git a/media/libstagefright/omx/hal/1.0/utils/Android.mk b/media/libstagefright/omx/hal/1.0/utils/Android.mk
new file mode 100644
index 0000000..6930c87
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/Android.mk
@@ -0,0 +1,42 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.media.omx@1.0-utils
+LOCAL_SRC_FILES := \
+    WGraphicBufferSource.cpp \
+    WOmx.cpp \
+    WOmxBufferProducer.cpp \
+    WOmxBufferSource.cpp \
+    WOmxNode.cpp \
+    WOmxObserver.cpp \
+    WOmxProducerListener.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+    libmedia \
+    libstagefright_foundation \
+    libstagefright_omx \
+    libui \
+    libgui \
+    libhidlbase \
+    libhidltransport \
+    libhwbinder \
+    libhidlmemory \
+    libutils \
+    libcutils \
+    libbinder \
+    liblog \
+    android.hardware.media.omx@1.0 \
+    android.hardware.graphics.common@1.0 \
+    android.hardware.media@1.0 \
+    android.hidl.base@1.0 \
+
+LOCAL_C_INCLUDES += \
+        $(TOP) \
+        $(TOP)/frameworks/av/include/media \
+        $(TOP)/frameworks/av/media/libstagefright/include \
+        $(TOP)/frameworks/av/media/libstagefright/omx \
+        $(TOP)/frameworks/native/include/media/hardware \
+        $(TOP)/frameworks/native/include/media/openmax \
+        $(TOP)/frameworks/native/include \
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/omx/hal/1.0/utils/Conversion.h b/media/libstagefright/omx/hal/1.0/utils/Conversion.h
new file mode 100644
index 0000000..6a99d8c
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/Conversion.h
@@ -0,0 +1,2154 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
+
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <hidlmemory/mapping.h>
+#include <android/hidl/memory/1.0/IMemory.h>
+
+#include <unistd.h>
+#include <vector>
+#include <list>
+
+#include <binder/Binder.h>
+#include <binder/Status.h>
+#include <ui/FenceTime.h>
+
+#include <OMXFenceParcelable.h>
+#include <cutils/native_handle.h>
+#include <gui/IGraphicBufferProducer.h>
+
+#include <IOMX.h>
+#include <VideoAPI.h>
+#include <OMXBuffer.h>
+#include <android/IOMXBufferSource.h>
+#include <android/IGraphicBufferSource.h>
+
+#include <android/hardware/media/omx/1.0/types.h>
+#include <android/hardware/media/omx/1.0/IOmx.h>
+#include <android/hardware/media/omx/1.0/IOmxNode.h>
+#include <android/hardware/media/omx/1.0/IOmxBufferProducer.h>
+#include <android/hardware/media/omx/1.0/IOmxBufferSource.h>
+#include <android/hardware/media/omx/1.0/IOmxObserver.h>
+#include <android/hardware/media/omx/1.0/IOmxProducerListener.h>
+#include <android/hardware/media/omx/1.0/IGraphicBufferSource.h>
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace utils {
+
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_handle;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+using ::android::String8;
+using ::android::OMXFenceParcelable;
+
+using ::android::hardware::media::omx::V1_0::Message;
+using ::android::omx_message;
+
+using ::android::hardware::media::omx::V1_0::ColorAspects;
+using ::android::hardware::media::V1_0::Rect;
+using ::android::hardware::media::V1_0::Region;
+
+using ::android::hardware::graphics::common::V1_0::Dataspace;
+
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+
+using ::android::OMXBuffer;
+
+using ::android::hardware::media::V1_0::AnwBuffer;
+using ::android::GraphicBuffer;
+
+using ::android::hardware::media::omx::V1_0::IOmx;
+using ::android::IOMX;
+
+using ::android::hardware::media::omx::V1_0::IOmxNode;
+using ::android::IOMXNode;
+
+using ::android::hardware::media::omx::V1_0::IOmxObserver;
+using ::android::IOMXObserver;
+
+using ::android::hardware::media::omx::V1_0::IOmxBufferSource;
+using ::android::IOMXBufferSource;
+
+using ::android::hardware::media::omx::V1_0::IOmxBufferProducer;
+using ::android::IGraphicBufferProducer;
+
+// native_handle_t helper functions.
+
+/**
+ * \brief Take an fd and create a native handle containing only the given fd.
+ * The created handle will need to be deleted manually with
+ * `native_handle_delete()`.
+ *
+ * \param[in] fd The source file descriptor (of type `int`).
+ * \return The create `native_handle_t*` that contains the given \p fd. If the
+ * supplied \p fd is negative, the created native handle will contain no file
+ * descriptors.
+ *
+ * If the native handle cannot be created, the return value will be
+ * `nullptr`.
+ *
+ * This function does not duplicate the file descriptor.
+ */
+inline native_handle_t* native_handle_create_from_fd(int fd) {
+    if (fd < 0) {
+        return native_handle_create(0, 0);
+    }
+    native_handle_t* nh = native_handle_create(1, 0);
+    if (nh == nullptr) {
+        return nullptr;
+    }
+    nh->data[0] = fd;
+    return nh;
+}
+
+/**
+ * \brief Extract a file descriptor from a native handle.
+ *
+ * \param[in] nh The source `native_handle_t*`.
+ * \param[in] index The index of the file descriptor in \p nh to read from. This
+ * input has the default value of `0`.
+ * \return The `index`-th file descriptor in \p nh. If \p nh does not have
+ * enough file descriptors, the returned value will be `-1`.
+ *
+ * This function does not duplicate the file descriptor.
+ */
+inline int native_handle_read_fd(native_handle_t const* nh, int index = 0) {
+    return ((nh == nullptr) || (nh->numFds == 0) ||
+            (nh->numFds <= index) || (index < 0)) ?
+            -1 : nh->data[index];
+}
+
+/**
+ * Conversion functions
+ * ====================
+ *
+ * There are two main directions of conversion:
+ * - `inTargetType(...)`: Create a wrapper whose lifetime depends on the
+ *   input. The wrapper has type `TargetType`.
+ * - `toTargetType(...)`: Create a standalone object of type `TargetType` that
+ *   corresponds to the input. The lifetime of the output does not depend on the
+ *   lifetime of the input.
+ * - `wrapIn(TargetType*, ...)`: Same as `inTargetType()`, but for `TargetType`
+ *   that cannot be copied and/or moved efficiently, or when there are multiple
+ *   output arguments.
+ * - `convertTo(TargetType*, ...)`: Same as `toTargetType()`, but for
+ *   `TargetType` that cannot be copied and/or moved efficiently, or when there
+ *   are multiple output arguments.
+ *
+ * `wrapIn()` and `convertTo()` functions will take output arguments before
+ * input arguments. Some of these functions might return a value to indicate
+ * success or error.
+ *
+ * In converting or wrapping something as a Treble type that contains a
+ * `hidl_handle`, `native_handle_t*` will need to be created and returned as
+ * an additional output argument, hence only `wrapIn()` or `convertTo()` would
+ * be available. The caller must call `native_handle_delete()` to deallocate the
+ * returned native handle when it is no longer needed.
+ *
+ * For types that contain file descriptors, `inTargetType()` and `wrapAs()` do
+ * not perform duplication of file descriptors, while `toTargetType()` and
+ * `convertTo()` do.
+ */
+
+/**
+ * \brief Convert `binder::Status` to `Return<void>`.
+ *
+ * \param[in] l The source `binder::Status`.
+ * \return The corresponding `Return<void>`.
+ */
+// convert: ::android::binder::Status -> Return<void>
+inline Return<void> toHardwareStatus(
+        ::android::binder::Status const& l) {
+    if (l.exceptionCode() == ::android::binder::Status::EX_SERVICE_SPECIFIC) {
+        return ::android::hardware::Status::fromServiceSpecificError(
+                l.serviceSpecificErrorCode(),
+                l.exceptionMessage());
+    }
+    return ::android::hardware::Status::fromExceptionCode(
+            l.exceptionCode(),
+            l.exceptionMessage());
+}
+
+/**
+ * \brief Convert `Return<void>` to `binder::Status`.
+ *
+ * \param[in] t The source `Return<void>`.
+ * \return The corresponding `binder::Status`.
+ */
+// convert: Return<void> -> ::android::binder::Status
+inline ::android::binder::Status toBinderStatus(
+        Return<void> const& t) {
+    return ::android::binder::Status::fromExceptionCode(
+            t.isOk() ? OK : UNKNOWN_ERROR,
+            t.description().c_str());
+}
+
+/**
+ * \brief Convert `Return<Status>` to `status_t`. This is for legacy binder
+ * calls.
+ *
+ * \param[in] t The source `Return<Status>`.
+ * \return The corresponding `status_t`.
+ *
+ * This function first check if \p t has a transport error. If it does, then the
+ * return value is the transport error code. Otherwise, the return value is
+ * converted from `Status` contained inside \p t.
+ *
+ * Note:
+ * - This `Status` is omx-specific. It is defined in `types.hal`.
+ * - The name of this function is not `convert`.
+ */
+// convert: Status -> status_t
+inline status_t toStatusT(Return<Status> const& t) {
+    return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) : UNKNOWN_ERROR;
+}
+
+/**
+ * \brief Convert `Return<void>` to `status_t`. This is for legacy binder calls.
+ *
+ * \param[in] t The source `Return<void>`.
+ * \return The corresponding `status_t`.
+ */
+// convert: Return<void> -> status_t
+inline status_t toStatusT(Return<void> const& t) {
+    return t.isOk() ? OK : UNKNOWN_ERROR;
+}
+
+/**
+ * \brief Convert `Status` to `status_t`. This is for legacy binder calls.
+ *
+ * \param[in] t The source `Status`.
+ * \return the corresponding `status_t`.
+ */
+// convert: Status -> status_t
+inline status_t toStatusT(Status const& t) {
+    return static_cast<status_t>(t);
+}
+
+/**
+ * \brief Convert `status_t` to `Status`.
+ *
+ * \param[in] l The source `status_t`.
+ * \return The corresponding `Status`.
+ */
+// convert: status_t -> Status
+inline Status toStatus(status_t l) {
+    return static_cast<Status>(l);
+}
+
+/**
+ * \brief Wrap `native_handle_t*` in `hidl_handle`.
+ *
+ * \param[in] nh The source `native_handle_t*`.
+ * \return The `hidl_handle` that points to \p nh.
+ */
+// wrap: native_handle_t* -> hidl_handle
+inline hidl_handle inHidlHandle(native_handle_t const* nh) {
+    return hidl_handle(nh);
+}
+
+/**
+ * \brief Wrap an `omx_message` and construct the corresponding `Message`.
+ *
+ * \param[out] t The wrapper of type `Message`.
+ * \param[out] nh The native_handle_t referred to by `t->fence`.
+ * \param[in] l The source `omx_message`.
+ * \return `true` if the wrapping is successful; `false` otherwise.
+ *
+ * Upon success, \p nh will be created to hold the file descriptor stored in
+ * `l.fenceFd`, and `t->fence` will point to \p nh. \p nh will need to be
+ * destroyed manually by `native_handle_delete()` when \p t is no longer needed.
+ *
+ * Upon failure, \p nh will not be created and will not need to be deleted. \p t
+ * will be invalid.
+ */
+// wrap, omx_message -> Message, native_handle_t*
+inline bool wrapAs(Message* t, native_handle_t** nh, omx_message const& l) {
+    *nh = native_handle_create_from_fd(l.fenceFd);
+    if (!*nh) {
+        return false;
+    }
+    t->fence = inHidlHandle(*nh);
+    switch (l.type) {
+        case omx_message::EVENT:
+            t->type = Message::Type::EVENT;
+            t->data.eventData.data1 = l.u.event_data.data1;
+            t->data.eventData.data2 = l.u.event_data.data2;
+            t->data.eventData.data3 = l.u.event_data.data3;
+            t->data.eventData.data4 = l.u.event_data.data4;
+            break;
+        case omx_message::EMPTY_BUFFER_DONE:
+            t->type = Message::Type::EMPTY_BUFFER_DONE;
+            t->data.bufferData.buffer = l.u.buffer_data.buffer;
+            break;
+        case omx_message::FILL_BUFFER_DONE:
+            t->type = Message::Type::FILL_BUFFER_DONE;
+            t->data.extendedBufferData.buffer = l.u.extended_buffer_data.buffer;
+            t->data.extendedBufferData.rangeOffset =
+                    l.u.extended_buffer_data.range_offset;
+            t->data.extendedBufferData.rangeLength =
+                    l.u.extended_buffer_data.range_length;
+            t->data.extendedBufferData.flags = l.u.extended_buffer_data.flags;
+            t->data.extendedBufferData.timestampUs =
+                    l.u.extended_buffer_data.timestamp;
+            break;
+        case omx_message::FRAME_RENDERED:
+            t->type = Message::Type::FRAME_RENDERED;
+            t->data.renderData.timestampUs = l.u.render_data.timestamp;
+            t->data.renderData.systemTimeNs = l.u.render_data.nanoTime;
+            break;
+        default:
+            native_handle_delete(*nh);
+            return false;
+    }
+    return true;
+}
+
+/**
+ * \brief Wrap a `Message` inside an `omx_message`.
+ *
+ * \param[out] l The wrapper of type `omx_message`.
+ * \param[in] t The source `Message`.
+ * \return `true` if the wrapping is successful; `false` otherwise.
+ */
+// wrap: Message -> omx_message
+inline bool wrapAs(omx_message* l, Message const& t) {
+    l->fenceFd = native_handle_read_fd(t.fence);
+    switch (t.type) {
+        case Message::Type::EVENT:
+            l->type = omx_message::EVENT;
+            l->u.event_data.data1 = t.data.eventData.data1;
+            l->u.event_data.data2 = t.data.eventData.data2;
+            l->u.event_data.data3 = t.data.eventData.data3;
+            l->u.event_data.data4 = t.data.eventData.data4;
+            break;
+        case Message::Type::EMPTY_BUFFER_DONE:
+            l->type = omx_message::EMPTY_BUFFER_DONE;
+            l->u.buffer_data.buffer = t.data.bufferData.buffer;
+            break;
+        case Message::Type::FILL_BUFFER_DONE:
+            l->type = omx_message::FILL_BUFFER_DONE;
+            l->u.extended_buffer_data.buffer = t.data.extendedBufferData.buffer;
+            l->u.extended_buffer_data.range_offset =
+                    t.data.extendedBufferData.rangeOffset;
+            l->u.extended_buffer_data.range_length =
+                    t.data.extendedBufferData.rangeLength;
+            l->u.extended_buffer_data.flags = t.data.extendedBufferData.flags;
+            l->u.extended_buffer_data.timestamp =
+                    t.data.extendedBufferData.timestampUs;
+            break;
+        case Message::Type::FRAME_RENDERED:
+            l->type = omx_message::FRAME_RENDERED;
+            l->u.render_data.timestamp = t.data.renderData.timestampUs;
+            l->u.render_data.nanoTime = t.data.renderData.systemTimeNs;
+            break;
+        default:
+            return false;
+    }
+    return true;
+}
+
+/**
+ * \brief Similar to `wrapTo(omx_message*, Message const&)`, but the output will
+ * have an extended lifetime.
+ *
+ * \param[out] l The output `omx_message`.
+ * \param[in] t The source `Message`.
+ * \return `true` if the conversion is successful; `false` otherwise.
+ *
+ * This function calls `wrapto()`, then attempts to duplicate the file
+ * descriptor for the fence if it is not `-1`. If duplication fails, `false`
+ * will be returned.
+ */
+// convert: Message -> omx_message
+inline bool convertTo(omx_message* l, Message const& t) {
+    if (!wrapAs(l, t)) {
+        return false;
+    }
+    if (l->fenceFd == -1) {
+        return true;
+    }
+    l->fenceFd = dup(l->fenceFd);
+    return l->fenceFd != -1;
+}
+
+/**
+ * \brief Wrap an `OMXFenceParcelable` inside a `hidl_handle`.
+ *
+ * \param[out] t The wrapper of type `hidl_handle`.
+ * \param[out] nh The native handle created to hold the file descriptor inside
+ * \p l.
+ * \param[in] l The source `OMXFenceParcelable`, which essentially contains one
+ * file descriptor.
+ * \return `true` if \p t and \p nh are successfully created to wrap around \p
+ * l; `false` otherwise.
+ *
+ * On success, \p nh needs to be deleted by the caller with
+ * `native_handle_delete()` after \p t and \p nh are no longer needed.
+ *
+ * On failure, \p nh will not need to be deleted, and \p t will hold an invalid
+ * value.
+ */
+// wrap: OMXFenceParcelable -> hidl_handle, native_handle_t*
+inline bool wrapAs(hidl_handle* t, native_handle_t** nh,
+        OMXFenceParcelable const& l) {
+    *nh = native_handle_create_from_fd(l.get());
+    if (!*nh) {
+        return false;
+    }
+    *t = *nh;
+    return true;
+}
+
+/**
+ * \brief Wrap a `hidl_handle` inside an `OMXFenceParcelable`.
+ *
+ * \param[out] l The wrapper of type `OMXFenceParcelable`.
+ * \param[in] t The source `hidl_handle`.
+ */
+// wrap: hidl_handle -> OMXFenceParcelable
+inline void wrapAs(OMXFenceParcelable* l, hidl_handle const& t) {
+    l->mFenceFd = native_handle_read_fd(t);
+}
+
+/**
+ * \brief Convert a `hidl_handle` to `OMXFenceParcelable`. If `hidl_handle`
+ * contains file descriptors, the first file descriptor will be duplicated and
+ * stored in the output `OMXFenceParcelable`.
+ *
+ * \param[out] l The output `OMXFenceParcelable`.
+ * \param[in] t The input `hidl_handle`.
+ * \return `false` if \p t contains a valid file descriptor but duplication
+ * fails; `true` otherwise.
+ */
+// convert: hidl_handle -> OMXFenceParcelable
+inline bool convertTo(OMXFenceParcelable* l, hidl_handle const& t) {
+    int fd = native_handle_read_fd(t);
+    if (fd != -1) {
+        fd = dup(fd);
+        if (fd == -1) {
+            return false;
+        }
+    }
+    l->mFenceFd = fd;
+    return true;
+}
+
+/**
+ * \brief Convert `::android::ColorAspects` to `ColorAspects`.
+ *
+ * \param[in] l The source `::android::ColorAspects`.
+ * \return The corresponding `ColorAspects`.
+ */
+// convert: ::android::ColorAspects -> ColorAspects
+inline ColorAspects toHardwareColorAspects(::android::ColorAspects const& l) {
+    return ColorAspects{
+            static_cast<ColorAspects::Range>(l.mRange),
+            static_cast<ColorAspects::Primaries>(l.mPrimaries),
+            static_cast<ColorAspects::Transfer>(l.mTransfer),
+            static_cast<ColorAspects::MatrixCoeffs>(l.mMatrixCoeffs)};
+}
+
+/**
+ * \brief Convert `int32_t` to `ColorAspects`.
+ *
+ * \param[in] l The source `int32_t`.
+ * \return The corresponding `ColorAspects`.
+ */
+// convert: int32_t -> ColorAspects
+inline ColorAspects toHardwareColorAspects(int32_t l) {
+    return ColorAspects{
+            static_cast<ColorAspects::Range>((l >> 24) & 0xFF),
+            static_cast<ColorAspects::Primaries>((l >> 16) & 0xFF),
+            static_cast<ColorAspects::Transfer>(l & 0xFF),
+            static_cast<ColorAspects::MatrixCoeffs>((l >> 8) & 0xFF)};
+}
+
+/**
+ * \brief Convert `ColorAspects` to `::android::ColorAspects`.
+ *
+ * \param[in] t The source `ColorAspects`.
+ * \return The corresponding `::android::ColorAspects`.
+ */
+// convert: ColorAspects -> ::android::ColorAspects
+inline int32_t toCompactColorAspects(ColorAspects const& t) {
+    return static_cast<int32_t>(
+            (static_cast<uint32_t>(t.range) << 24) |
+            (static_cast<uint32_t>(t.primaries) << 16) |
+            (static_cast<uint32_t>(t.transfer)) |
+            (static_cast<uint32_t>(t.matrixCoeffs) << 8));
+}
+
+/**
+ * \brief Convert `int32_t` to `Dataspace`.
+ *
+ * \param[in] l The source `int32_t`.
+ * \result The corresponding `Dataspace`.
+ */
+// convert: int32_t -> Dataspace
+inline Dataspace toHardwareDataspace(int32_t l) {
+    return static_cast<Dataspace>(l);
+}
+
+/**
+ * \brief Convert `Dataspace` to `int32_t`.
+ *
+ * \param[in] t The source `Dataspace`.
+ * \result The corresponding `int32_t`.
+ */
+// convert: Dataspace -> int32_t
+inline int32_t toRawDataspace(Dataspace const& t) {
+    return static_cast<int32_t>(t);
+}
+
+/**
+ * \brief Wrap an opaque buffer inside a `hidl_vec<uint8_t>`.
+ *
+ * \param[in] l The pointer to the beginning of the opaque buffer.
+ * \param[in] size The size of the buffer.
+ * \return A `hidl_vec<uint8_t>` that points to the buffer.
+ */
+// wrap: void*, size_t -> hidl_vec<uint8_t>
+inline hidl_vec<uint8_t> inHidlBytes(void const* l, size_t size) {
+    hidl_vec<uint8_t> t;
+    t.setToExternal(static_cast<uint8_t*>(const_cast<void*>(l)), size, false);
+    return t;
+}
+
+/**
+ * \brief Create a `hidl_vec<uint8_t>` that is a copy of an opaque buffer.
+ *
+ * \param[in] l The pointer to the beginning of the opaque buffer.
+ * \param[in] size The size of the buffer.
+ * \return A `hidl_vec<uint8_t>` that is a copy of the input buffer.
+ */
+// convert: void*, size_t -> hidl_vec<uint8_t>
+inline hidl_vec<uint8_t> toHidlBytes(void const* l, size_t size) {
+    hidl_vec<uint8_t> t;
+    t.resize(size);
+    uint8_t const* src = static_cast<uint8_t const*>(l);
+    std::copy(src, src + size, t.data());
+    return t;
+}
+
+/**
+ * \brief Wrap `OMXBuffer` in `CodecBuffer`.
+ *
+ * \param[out] t The wrapper of type `CodecBuffer`.
+ * \param[in] l The source `OMXBuffer`.
+ * \return `true` if the wrapping is successful; `false` otherwise.
+ */
+// wrap: OMXBuffer -> CodecBuffer
+inline bool wrapAs(CodecBuffer* t, OMXBuffer const& l) {
+    t->nativeHandle = hidl_handle();
+    t->sharedMemory = hidl_memory();
+    switch (l.mBufferType) {
+        case OMXBuffer::kBufferTypeInvalid: {
+            t->type = CodecBuffer::Type::INVALID;
+            return true;
+        }
+        case OMXBuffer::kBufferTypePreset: {
+            t->type = CodecBuffer::Type::PRESET;
+            t->attr.preset.rangeLength = static_cast<uint32_t>(l.mRangeLength);
+            t->attr.preset.rangeOffset = static_cast<uint32_t>(l.mRangeOffset);
+            return true;
+        }
+        case OMXBuffer::kBufferTypeHidlMemory: {
+            t->type = CodecBuffer::Type::SHARED_MEM;
+            t->sharedMemory = l.mHidlMemory;
+            return true;
+        }
+        case OMXBuffer::kBufferTypeSharedMem: {
+            // This is not supported.
+            return false;
+        }
+        case OMXBuffer::kBufferTypeANWBuffer: {
+            t->type = CodecBuffer::Type::ANW_BUFFER;
+            t->attr.anwBuffer.width = l.mGraphicBuffer->getWidth();
+            t->attr.anwBuffer.height = l.mGraphicBuffer->getHeight();
+            t->attr.anwBuffer.stride = l.mGraphicBuffer->getStride();
+            t->attr.anwBuffer.format = static_cast<PixelFormat>(
+                    l.mGraphicBuffer->getPixelFormat());
+            t->attr.anwBuffer.layerCount = l.mGraphicBuffer->getLayerCount();
+            t->attr.anwBuffer.usage = l.mGraphicBuffer->getUsage();
+            t->nativeHandle = hidl_handle(l.mGraphicBuffer->handle);
+            return true;
+        }
+        case OMXBuffer::kBufferTypeNativeHandle: {
+            t->type = CodecBuffer::Type::NATIVE_HANDLE;
+            t->nativeHandle = hidl_handle(l.mNativeHandle->handle());
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * \brief Convert `CodecBuffer` to `OMXBuffer`.
+ *
+ * \param[out] l The destination `OMXBuffer`.
+ * \param[in] t The source `CodecBuffer`.
+ * \return `true` if successful; `false` otherwise.
+ */
+// convert: CodecBuffer -> OMXBuffer
+inline bool convertTo(OMXBuffer* l, CodecBuffer const& t) {
+    switch (t.type) {
+        case CodecBuffer::Type::INVALID: {
+            *l = OMXBuffer();
+            return true;
+        }
+        case CodecBuffer::Type::PRESET: {
+            *l = OMXBuffer(
+                    t.attr.preset.rangeOffset,
+                    t.attr.preset.rangeLength);
+            return true;
+        }
+        case CodecBuffer::Type::SHARED_MEM: {
+            *l = OMXBuffer(t.sharedMemory);
+            return true;
+        }
+        case CodecBuffer::Type::ANW_BUFFER: {
+            *l = OMXBuffer(sp<GraphicBuffer>(new GraphicBuffer(
+                    t.attr.anwBuffer.width,
+                    t.attr.anwBuffer.height,
+                    static_cast<::android::PixelFormat>(
+                            t.attr.anwBuffer.format),
+                    t.attr.anwBuffer.layerCount,
+                    t.attr.anwBuffer.usage,
+                    t.attr.anwBuffer.stride,
+                    native_handle_clone(t.nativeHandle),
+                    true)));
+            return true;
+        }
+        case CodecBuffer::Type::NATIVE_HANDLE: {
+            *l = OMXBuffer(NativeHandle::create(
+                    native_handle_clone(t.nativeHandle), true));
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * \brief Convert `IOMX::ComponentInfo` to `IOmx::ComponentInfo`.
+ *
+ * \param[out] t The destination `IOmx::ComponentInfo`.
+ * \param[in] l The source `IOMX::ComponentInfo`.
+ */
+// convert: IOMX::ComponentInfo -> IOmx::ComponentInfo
+inline bool convertTo(IOmx::ComponentInfo* t, IOMX::ComponentInfo const& l) {
+    t->mName = l.mName.string();
+    t->mRoles.resize(l.mRoles.size());
+    size_t i = 0;
+    for (auto& role : l.mRoles) {
+        t->mRoles[i++] = role.string();
+    }
+    return true;
+}
+
+/**
+ * \brief Convert `IOmx::ComponentInfo` to `IOMX::ComponentInfo`.
+ *
+ * \param[out] l The destination `IOMX::ComponentInfo`.
+ * \param[in] t The source `IOmx::ComponentInfo`.
+ */
+// convert: IOmx::ComponentInfo -> IOMX::ComponentInfo
+inline bool convertTo(IOMX::ComponentInfo* l, IOmx::ComponentInfo const& t) {
+    l->mName = t.mName.c_str();
+    l->mRoles.clear();
+    for (size_t i = 0; i < t.mRoles.size(); ++i) {
+        l->mRoles.push_back(String8(t.mRoles[i].c_str()));
+    }
+    return true;
+}
+
+/**
+ * \brief Convert `OMX_BOOL` to `bool`.
+ *
+ * \param[in] l The source `OMX_BOOL`.
+ * \return The destination `bool`.
+ */
+// convert: OMX_BOOL -> bool
+inline bool toRawBool(OMX_BOOL l) {
+    return l == OMX_FALSE ? false : true;
+}
+
+/**
+ * \brief Convert `bool` to `OMX_BOOL`.
+ *
+ * \param[in] t The source `bool`.
+ * \return The destination `OMX_BOOL`.
+ */
+// convert: bool -> OMX_BOOL
+inline OMX_BOOL toEnumBool(bool t) {
+    return t ? OMX_TRUE : OMX_FALSE;
+}
+
+/**
+ * \brief Convert `OMX_COMMANDTYPE` to `uint32_t`.
+ *
+ * \param[in] l The source `OMX_COMMANDTYPE`.
+ * \return The underlying value of type `uint32_t`.
+ *
+ * `OMX_COMMANDTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: OMX_COMMANDTYPE -> uint32_t
+inline uint32_t toRawCommandType(OMX_COMMANDTYPE l) {
+    return static_cast<uint32_t>(l);
+}
+
+/**
+ * \brief Convert `uint32_t` to `OMX_COMMANDTYPE`.
+ *
+ * \param[in] t The source `uint32_t`.
+ * \return The corresponding enum value of type `OMX_COMMANDTYPE`.
+ *
+ * `OMX_COMMANDTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: uint32_t -> OMX_COMMANDTYPE
+inline OMX_COMMANDTYPE toEnumCommandType(uint32_t t) {
+    return static_cast<OMX_COMMANDTYPE>(t);
+}
+
+/**
+ * \brief Convert `OMX_INDEXTYPE` to `uint32_t`.
+ *
+ * \param[in] l The source `OMX_INDEXTYPE`.
+ * \return The underlying value of type `uint32_t`.
+ *
+ * `OMX_INDEXTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: OMX_INDEXTYPE -> uint32_t
+inline uint32_t toRawIndexType(OMX_INDEXTYPE l) {
+    return static_cast<uint32_t>(l);
+}
+
+/**
+ * \brief Convert `uint32_t` to `OMX_INDEXTYPE`.
+ *
+ * \param[in] t The source `uint32_t`.
+ * \return The corresponding enum value of type `OMX_INDEXTYPE`.
+ *
+ * `OMX_INDEXTYPE` is an enum type whose underlying type is `uint32_t`.
+ */
+// convert: uint32_t -> OMX_INDEXTYPE
+inline OMX_INDEXTYPE toEnumIndexType(uint32_t t) {
+    return static_cast<OMX_INDEXTYPE>(t);
+}
+
+/**
+ * \brief Convert `IOMX::PortMode` to `PortMode`.
+ *
+ * \param[in] l The source `IOMX::PortMode`.
+ * \return The destination `PortMode`.
+ */
+// convert: IOMX::PortMode -> PortMode
+inline PortMode toHardwarePortMode(IOMX::PortMode l) {
+    return static_cast<PortMode>(l);
+}
+
+/**
+ * \brief Convert `PortMode` to `IOMX::PortMode`.
+ *
+ * \param[in] t The source `PortMode`.
+ * \return The destination `IOMX::PortMode`.
+ */
+// convert: PortMode -> IOMX::PortMode
+inline IOMX::PortMode toIOMXPortMode(PortMode t) {
+    return static_cast<IOMX::PortMode>(t);
+}
+
+/**
+ * \brief Convert `OMX_TICKS` to `uint64_t`.
+ *
+ * \param[in] l The source `OMX_TICKS`.
+ * \return The destination `uint64_t`.
+ */
+// convert: OMX_TICKS -> uint64_t
+inline uint64_t toRawTicks(OMX_TICKS l) {
+#ifndef OMX_SKIP64BIT
+    return static_cast<uint64_t>(l);
+#else
+    return static_cast<uint64_t>(l.nLowPart) |
+            static_cast<uint64_t>(l.nHighPart << 32);
+#endif
+}
+
+/**
+ * \brief Convert `uint64_t` to `OMX_TICKS`.
+ *
+ * \param[in] l The source `uint64_t`.
+ * \return The destination `OMX_TICKS`.
+ */
+// convert: uint64_t -> OMX_TICKS
+inline OMX_TICKS toOMXTicks(uint64_t t) {
+#ifndef OMX_SKIP64BIT
+    return static_cast<OMX_TICKS>(t);
+#else
+    return OMX_TICKS{
+            static_cast<uint32_t>(t & 0xFFFFFFFF),
+            static_cast<uint32_t>(t >> 32)};
+#endif
+}
+
+/**
+ * \brief Wrap `GraphicBuffer` in `AnwBuffer`.
+ *
+ * \param[out] t The wrapper of type `AnwBuffer`.
+ * \param[in] l The source `GraphicBuffer`.
+ */
+// wrap: GraphicBuffer -> AnwBuffer
+inline void wrapAs(AnwBuffer* t, GraphicBuffer const& l) {
+    t->attr.width = l.getWidth();
+    t->attr.height = l.getHeight();
+    t->attr.stride = l.getStride();
+    t->attr.format = static_cast<PixelFormat>(l.getPixelFormat());
+    t->attr.layerCount = l.getLayerCount();
+    t->attr.usage = l.getUsage();
+    t->attr.id = l.getId();
+    t->attr.generationNumber = l.getGenerationNumber();
+    t->nativeHandle = hidl_handle(l.handle);
+}
+
+/**
+ * \brief Convert `AnwBuffer` to `GraphicBuffer`.
+ *
+ * \param[out] l The destination `GraphicBuffer`.
+ * \param[in] t The source `AnwBuffer`.
+ *
+ * This function will duplicate all file descriptors in \p t.
+ */
+// convert: AnwBuffer -> GraphicBuffer
+// Ref: frameworks/native/libs/ui/GraphicBuffer.cpp: GraphicBuffer::flatten
+inline bool convertTo(GraphicBuffer* l, AnwBuffer const& t) {
+    native_handle_t* handle = t.nativeHandle == nullptr ?
+            nullptr : native_handle_clone(t.nativeHandle);
+
+    size_t const numInts = 12 + (handle ? handle->numInts : 0);
+    int32_t* ints = new int32_t[numInts];
+
+    size_t numFds = static_cast<size_t>(handle ? handle->numFds : 0);
+    int* fds = new int[numFds];
+
+    ints[0] = 'GBFR';
+    ints[1] = static_cast<int32_t>(t.attr.width);
+    ints[2] = static_cast<int32_t>(t.attr.height);
+    ints[3] = static_cast<int32_t>(t.attr.stride);
+    ints[4] = static_cast<int32_t>(t.attr.format);
+    ints[5] = static_cast<int32_t>(t.attr.layerCount);
+    ints[6] = static_cast<int32_t>(t.attr.usage);
+    ints[7] = static_cast<int32_t>(t.attr.id >> 32);
+    ints[8] = static_cast<int32_t>(t.attr.id & 0xFFFFFFFF);
+    ints[9] = static_cast<int32_t>(t.attr.generationNumber);
+    ints[10] = 0;
+    ints[11] = 0;
+    if (handle) {
+        ints[10] = static_cast<int32_t>(handle->numFds);
+        ints[11] = static_cast<int32_t>(handle->numInts);
+        int* intsStart = handle->data + handle->numFds;
+        std::copy(handle->data, intsStart, fds);
+        std::copy(intsStart, intsStart + handle->numInts, &ints[12]);
+    }
+
+    void const* constBuffer = static_cast<void const*>(ints);
+    size_t size = numInts * sizeof(int32_t);
+    int const* constFds = static_cast<int const*>(fds);
+    status_t status = l->unflatten(constBuffer, size, constFds, numFds);
+
+    delete [] fds;
+    delete [] ints;
+    native_handle_delete(handle);
+    return status == NO_ERROR;
+}
+
+/**
+ * Conversion functions for types outside media
+ * ============================================
+ *
+ * Some objects in libui and libgui that were made to go through binder calls do
+ * not expose ways to read or write their fields to the public. To pass an
+ * object of this kind through the HIDL boundary, translation functions need to
+ * work around the access restriction by using the publicly available
+ * `flatten()` and `unflatten()` functions.
+ *
+ * All `flatten()` and `unflatten()` overloads follow the same convention as
+ * follows:
+ *
+ *     status_t flatten(ObjectType const& object,
+ *                      [OtherType const& other, ...]
+ *                      void*& buffer, size_t& size,
+ *                      int*& fds, size_t& numFds)
+ *
+ *     status_t unflatten(ObjectType* object,
+ *                        [OtherType* other, ...,]
+ *                        void*& buffer, size_t& size,
+ *                        int*& fds, size_t& numFds)
+ *
+ * The number of `other` parameters varies depending on the `ObjectType`. For
+ * example, in the process of unflattening an object that contains
+ * `hidl_handle`, `other` is needed to hold `native_handle_t` objects that will
+ * be created.
+ *
+ * The last four parameters always work the same way in all overloads of
+ * `flatten()` and `unflatten()`:
+ * - For `flatten()`, `buffer` is the pointer to the non-fd buffer to be filled,
+ *   `size` is the size (in bytes) of the non-fd buffer pointed to by `buffer`,
+ *   `fds` is the pointer to the fd buffer to be filled, and `numFds` is the
+ *   size (in ints) of the fd buffer pointed to by `fds`.
+ * - For `unflatten()`, `buffer` is the pointer to the non-fd buffer to be read
+ *   from, `size` is the size (in bytes) of the non-fd buffer pointed to by
+ *   `buffer`, `fds` is the pointer to the fd buffer to be read from, and
+ *   `numFds` is the size (in ints) of the fd buffer pointed to by `fds`.
+ * - After a successful call to `flatten()` or `unflatten()`, `buffer` and `fds`
+ *   will be advanced, while `size` and `numFds` will be decreased to reflect
+ *   how much storage/data of the two buffers (fd and non-fd) have been used.
+ * - After an unsuccessful call, the values of `buffer`, `size`, `fds` and
+ *   `numFds` are invalid.
+ *
+ * The return value of a successful `flatten()` or `unflatten()` call will be
+ * `OK` (also aliased as `NO_ERROR`). Any other values indicate a failure.
+ *
+ * For each object type that supports flattening, there will be two accompanying
+ * functions: `getFlattenedSize()` and `getFdCount()`. `getFlattenedSize()` will
+ * return the size of the non-fd buffer that the object will need for
+ * flattening. `getFdCount()` will return the size of the fd buffer that the
+ * object will need for flattening.
+ *
+ * The set of these four functions, `getFlattenedSize()`, `getFdCount()`,
+ * `flatten()` and `unflatten()`, are similar to functions of the same name in
+ * the abstract class `Flattenable`. The only difference is that functions in
+ * this file are not member functions of the object type. For example, we write
+ *
+ *     flatten(x, buffer, size, fds, numFds)
+ *
+ * instead of
+ *
+ *     x.flatten(buffer, size, fds, numFds)
+ *
+ * because we cannot modify the type of `x`.
+ *
+ * There is one exception to the naming convention: `hidl_handle` that
+ * represents a fence. The four functions for this "Fence" type have the word
+ * "Fence" attched to their names because the object type, which is
+ * `hidl_handle`, does not carry the special meaning that the object itself can
+ * only contain zero or one file descriptor.
+ */
+
+// Ref: frameworks/native/libs/ui/Fence.cpp
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten a fence.
+ *
+ * \param[in] fence The input fence of type `hidl_handle`.
+ * \return The required size of the flat buffer.
+ *
+ * The current version of this function always returns 4, which is the number of
+ * bytes required to store the number of file descriptors contained in the fd
+ * part of the flat buffer.
+ */
+inline size_t getFenceFlattenedSize(hidl_handle const& /* fence */) {
+    return 4;
+};
+
+/**
+ * \brief Return the number of file descriptors contained in a fence.
+ *
+ * \param[in] fence The input fence of type `hidl_handle`.
+ * \return `0` if \p fence does not contain a valid file descriptor, or `1`
+ * otherwise.
+ */
+inline size_t getFenceFdCount(hidl_handle const& fence) {
+    return native_handle_read_fd(fence) == -1 ? 0 : 1;
+}
+
+/**
+ * \brief Unflatten `Fence` to `hidl_handle`.
+ *
+ * \param[out] fence The destination `hidl_handle`.
+ * \param[out] nh The underlying native handle.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR`, \p nh will point to a newly created
+ * native handle, which needs to be deleted with `native_handle_delete()`
+ * afterwards.
+ */
+inline status_t unflattenFence(hidl_handle* fence, native_handle_t** nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < 4) {
+        return NO_MEMORY;
+    }
+
+    uint32_t numFdsInHandle;
+    FlattenableUtils::read(buffer, size, numFdsInHandle);
+
+    if (numFdsInHandle > 1) {
+        return BAD_VALUE;
+    }
+
+    if (numFds < numFdsInHandle) {
+        return NO_MEMORY;
+    }
+
+    if (numFdsInHandle) {
+        *nh = native_handle_create_from_fd(*fds);
+        if (*nh == nullptr) {
+            return NO_MEMORY;
+        }
+        *fence = hidl_handle(*nh);
+        ++fds;
+        --numFds;
+    } else {
+        *nh = nullptr;
+        *fence = hidl_handle();
+    }
+
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `hidl_handle` as `Fence`.
+ *
+ * \param[in] t The source `hidl_handle`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ */
+inline status_t flattenFence(hidl_handle const& fence,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (size < getFenceFlattenedSize(fence) ||
+            numFds < getFenceFdCount(fence)) {
+        return NO_MEMORY;
+    }
+    // Cast to uint32_t since the size of a size_t can vary between 32- and
+    // 64-bit processes
+    FlattenableUtils::write(buffer, size,
+            static_cast<uint32_t>(getFenceFdCount(fence)));
+    int fd = native_handle_read_fd(fence);
+    if (fd != -1) {
+        *fds = fd;
+        ++fds;
+        --numFds;
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Wrap `Fence` in `hidl_handle`.
+ *
+ * \param[out] t The wrapper of type `hidl_handle`.
+ * \param[out] nh The native handle pointed to by \p t.
+ * \param[in] l The source `Fence`.
+ *
+ * On success, \p nh will hold a newly created native handle, which must be
+ * deleted manually with `native_handle_delete()` afterwards.
+ */
+// wrap: Fence -> hidl_handle
+inline bool wrapAs(hidl_handle* t, native_handle_t** nh, Fence const& l) {
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = l.getFdCount();
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = static_cast<int*>(baseFds.get());
+    size_t numFds = baseNumFds;
+    if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (unflattenFence(t, nh, constBuffer, size, constFds, numFds)
+            != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `hidl_handle` to `Fence`.
+ *
+ * \param[out] l The destination `Fence`. `l` must not have been used
+ * (`l->isValid()` must return `false`) before this function is called.
+ * \param[in] t The source `hidl_handle`.
+ *
+ * If \p t contains a valid file descriptor, it will be duplicated.
+ */
+// convert: hidl_handle -> Fence
+inline bool convertTo(Fence* l, hidl_handle const& t) {
+    int fd = native_handle_read_fd(t);
+    if (fd != -1) {
+        fd = dup(fd);
+        if (fd == -1) {
+            return false;
+        }
+    }
+    native_handle_t* nh = native_handle_create_from_fd(fd);
+    if (nh == nullptr) {
+        if (fd != -1) {
+            close(fd);
+        }
+        return false;
+    }
+
+    size_t const baseSize = getFenceFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        native_handle_delete(nh);
+        return false;
+    }
+
+    size_t const baseNumFds = getFenceFdCount(t);
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        native_handle_delete(nh);
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = static_cast<int*>(baseFds.get());
+    size_t numFds = baseNumFds;
+    if (flattenFence(hidl_handle(nh), buffer, size, fds, numFds) != NO_ERROR) {
+        native_handle_delete(nh);
+        return false;
+    }
+    native_handle_delete(nh);
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/ui/FenceTime.cpp: FenceTime::Snapshot
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten
+ * `FenceTimeSnapshot`.
+ *
+ * \param[in] t The input `FenceTimeSnapshot`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(
+        IOmxBufferProducer::FenceTimeSnapshot const& t) {
+    constexpr size_t min = sizeof(t.state);
+    switch (t.state) {
+        case IOmxBufferProducer::FenceTimeSnapshot::State::EMPTY:
+            return min;
+        case IOmxBufferProducer::FenceTimeSnapshot::State::FENCE:
+            return min + getFenceFlattenedSize(t.fence);
+        case IOmxBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME:
+            return min + sizeof(
+                    ::android::FenceTime::Snapshot::signalTime);
+    }
+    return 0;
+}
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `FenceTimeSnapshot`.
+ *
+ * \param[in] t The input `FenceTimeSnapshot`.
+ * \return The number of file descriptors contained in \p snapshot.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::FenceTimeSnapshot const& t) {
+    return t.state ==
+            IOmxBufferProducer::FenceTimeSnapshot::State::FENCE ?
+            getFenceFdCount(t.fence) : 0;
+}
+
+/**
+ * \brief Flatten `FenceTimeSnapshot`.
+ *
+ * \param[in] t The source `FenceTimeSnapshot`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate the file descriptor in `t.fence` if `t.state ==
+ * FENCE`.
+ */
+inline status_t flatten(IOmxBufferProducer::FenceTimeSnapshot const& t,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    switch (t.state) {
+        case IOmxBufferProducer::FenceTimeSnapshot::State::EMPTY:
+            FlattenableUtils::write(buffer, size,
+                    ::android::FenceTime::Snapshot::State::EMPTY);
+            return NO_ERROR;
+        case IOmxBufferProducer::FenceTimeSnapshot::State::FENCE:
+            FlattenableUtils::write(buffer, size,
+                    ::android::FenceTime::Snapshot::State::FENCE);
+            return flattenFence(t.fence, buffer, size, fds, numFds);
+        case IOmxBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME:
+            FlattenableUtils::write(buffer, size,
+                    ::android::FenceTime::Snapshot::State::SIGNAL_TIME);
+            FlattenableUtils::write(buffer, size, t.signalTimeNs);
+            return NO_ERROR;
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Unflatten `FenceTimeSnapshot`.
+ *
+ * \param[out] t The destination `FenceTimeSnapshot`.
+ * \param[out] nh The underlying native handle.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR` and the constructed snapshot contains a
+ * file descriptor, \p nh will be created to hold that file descriptor. In this
+ * case, \p nh needs to be deleted with `native_handle_delete()` afterwards.
+ */
+inline status_t unflatten(
+        IOmxBufferProducer::FenceTimeSnapshot* t, native_handle_t** nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < sizeof(t->state)) {
+        return NO_MEMORY;
+    }
+
+    ::android::FenceTime::Snapshot::State state;
+    FlattenableUtils::read(buffer, size, state);
+    switch (state) {
+        case ::android::FenceTime::Snapshot::State::EMPTY:
+            t->state = IOmxBufferProducer::FenceTimeSnapshot::State::EMPTY;
+            return NO_ERROR;
+        case ::android::FenceTime::Snapshot::State::FENCE:
+            t->state = IOmxBufferProducer::FenceTimeSnapshot::State::FENCE;
+            return unflattenFence(&t->fence, nh, buffer, size, fds, numFds);
+        case ::android::FenceTime::Snapshot::State::SIGNAL_TIME:
+            t->state = IOmxBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME;
+            if (size < sizeof(t->signalTimeNs)) {
+                return NO_MEMORY;
+            }
+            FlattenableUtils::read(buffer, size, t->signalTimeNs);
+            return NO_ERROR;
+    }
+    return NO_ERROR;
+}
+
+// Ref: frameworks/native/libs/gui/FrameTimestamps.cpp: FrameEventsDelta
+
+/**
+ * \brief Return a lower bound on the size of the non-fd buffer required to
+ * flatten `FrameEventsDelta`.
+ *
+ * \param[in] t The input `FrameEventsDelta`.
+ * \return A lower bound on the size of the flat buffer.
+ */
+constexpr size_t minFlattenedSize(
+        IOmxBufferProducer::FrameEventsDelta const& /* t */) {
+    return sizeof(uint64_t) + // mFrameNumber
+            sizeof(uint8_t) + // mIndex
+            sizeof(uint8_t) + // mAddPostCompositeCalled
+            sizeof(uint8_t) + // mAddRetireCalled
+            sizeof(uint8_t) + // mAddReleaseCalled
+            sizeof(nsecs_t) + // mPostedTime
+            sizeof(nsecs_t) + // mRequestedPresentTime
+            sizeof(nsecs_t) + // mLatchTime
+            sizeof(nsecs_t) + // mFirstRefreshStartTime
+            sizeof(nsecs_t); // mLastRefreshStartTime
+}
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten
+ * `FrameEventsDelta`.
+ *
+ * \param[in] t The input `FrameEventsDelta`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(
+        IOmxBufferProducer::FrameEventsDelta const& t) {
+    return minFlattenedSize(t) +
+            getFlattenedSize(t.gpuCompositionDoneFence) +
+            getFlattenedSize(t.displayPresentFence) +
+            getFlattenedSize(t.displayRetireFence) +
+            getFlattenedSize(t.releaseFence);
+};
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `FrameEventsDelta`.
+ *
+ * \param[in] t The input `FrameEventsDelta`.
+ * \return The number of file descriptors contained in \p t.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::FrameEventsDelta const& t) {
+    return getFdCount(t.gpuCompositionDoneFence) +
+            getFdCount(t.displayPresentFence) +
+            getFdCount(t.displayRetireFence) +
+            getFdCount(t.releaseFence);
+};
+
+/**
+ * \brief Unflatten `FrameEventsDelta`.
+ *
+ * \param[out] t The destination `FrameEventsDelta`.
+ * \param[out] nh The underlying array of native handles.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR`, \p nh will have length 4, and it will be
+ * populated with `nullptr` or newly created handles. Each non-null slot in \p
+ * nh will need to be deleted manually with `native_handle_delete()`.
+ */
+inline status_t unflatten(IOmxBufferProducer::FrameEventsDelta* t,
+        std::vector<native_handle_t*>* nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < minFlattenedSize(*t)) {
+        return NO_MEMORY;
+    }
+    FlattenableUtils::read(buffer, size, t->frameNumber);
+
+    // These were written as uint8_t for alignment.
+    uint8_t temp = 0;
+    FlattenableUtils::read(buffer, size, temp);
+    size_t index = static_cast<size_t>(temp);
+    if (index >= ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
+        return BAD_VALUE;
+    }
+    t->index = static_cast<uint32_t>(index);
+
+    FlattenableUtils::read(buffer, size, temp);
+    t->addPostCompositeCalled = static_cast<bool>(temp);
+    FlattenableUtils::read(buffer, size, temp);
+    t->addRetireCalled = static_cast<bool>(temp);
+    FlattenableUtils::read(buffer, size, temp);
+    t->addReleaseCalled = static_cast<bool>(temp);
+
+    FlattenableUtils::read(buffer, size, t->postedTimeNs);
+    FlattenableUtils::read(buffer, size, t->requestedPresentTimeNs);
+    FlattenableUtils::read(buffer, size, t->latchTimeNs);
+    FlattenableUtils::read(buffer, size, t->firstRefreshStartTimeNs);
+    FlattenableUtils::read(buffer, size, t->lastRefreshStartTimeNs);
+    FlattenableUtils::read(buffer, size, t->dequeueReadyTime);
+
+    // Fences
+    IOmxBufferProducer::FenceTimeSnapshot* tSnapshot[4];
+    tSnapshot[0] = &t->gpuCompositionDoneFence;
+    tSnapshot[1] = &t->displayPresentFence;
+    tSnapshot[2] = &t->displayRetireFence;
+    tSnapshot[3] = &t->releaseFence;
+    nh->resize(4);
+    for (size_t snapshotIndex = 0; snapshotIndex < 4; ++snapshotIndex) {
+        status_t status = unflatten(
+                tSnapshot[snapshotIndex], &((*nh)[snapshotIndex]),
+                buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            while (snapshotIndex > 0) {
+                --snapshotIndex;
+                if ((*nh)[snapshotIndex] != nullptr) {
+                    native_handle_delete((*nh)[snapshotIndex]);
+                }
+            }
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `FrameEventsDelta`.
+ *
+ * \param[in] t The source `FrameEventsDelta`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate file descriptors contained in \p t.
+ */
+// Ref: frameworks/native/libs/gui/FrameTimestamp.cpp:
+//      FrameEventsDelta::flatten
+inline status_t flatten(IOmxBufferProducer::FrameEventsDelta const& t,
+        void*& buffer, size_t& size, int*& fds, size_t numFds) {
+    // Check that t.index is within a valid range.
+    if (t.index >= static_cast<uint32_t>(FrameEventHistory::MAX_FRAME_HISTORY)
+            || t.index > std::numeric_limits<uint8_t>::max()) {
+        return BAD_VALUE;
+    }
+
+    FlattenableUtils::write(buffer, size, t.frameNumber);
+
+    // These are static_cast to uint8_t for alignment.
+    FlattenableUtils::write(buffer, size, static_cast<uint8_t>(t.index));
+    FlattenableUtils::write(
+            buffer, size, static_cast<uint8_t>(t.addPostCompositeCalled));
+    FlattenableUtils::write(
+            buffer, size, static_cast<uint8_t>(t.addRetireCalled));
+    FlattenableUtils::write(
+            buffer, size, static_cast<uint8_t>(t.addReleaseCalled));
+
+    FlattenableUtils::write(buffer, size, t.postedTimeNs);
+    FlattenableUtils::write(buffer, size, t.requestedPresentTimeNs);
+    FlattenableUtils::write(buffer, size, t.latchTimeNs);
+    FlattenableUtils::write(buffer, size, t.firstRefreshStartTimeNs);
+    FlattenableUtils::write(buffer, size, t.lastRefreshStartTimeNs);
+    FlattenableUtils::write(buffer, size, t.dequeueReadyTime);
+
+    // Fences
+    IOmxBufferProducer::FenceTimeSnapshot const* tSnapshot[4];
+    tSnapshot[0] = &t.gpuCompositionDoneFence;
+    tSnapshot[1] = &t.displayPresentFence;
+    tSnapshot[2] = &t.displayRetireFence;
+    tSnapshot[3] = &t.releaseFence;
+    for (size_t snapshotIndex = 0; snapshotIndex < 4; ++snapshotIndex) {
+        status_t status = flatten(
+                *(tSnapshot[snapshotIndex]), buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+// Ref: frameworks/native/libs/gui/FrameTimestamps.cpp: FrameEventHistoryDelta
+
+/**
+ * \brief Return the size of the non-fd buffer required to flatten
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::FrameEventHistoryDelta`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(
+        IOmxBufferProducer::FrameEventHistoryDelta const& t) {
+    size_t size = 4;
+    for (size_t i = 0; i < t.size(); ++i) {
+        size += getFlattenedSize(t[i]);
+    }
+    return size;
+}
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::FrameEventHistoryDelta`.
+ * \return The number of file descriptors contained in \p t.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::FrameEventHistoryDelta const& t) {
+    size_t numFds = 0;
+    for (size_t i = 0; i < t.size(); ++i) {
+        numFds += getFdCount(t[i]);
+    }
+    return numFds;
+}
+
+/**
+ * \brief Unflatten `FrameEventHistoryDelta`.
+ *
+ * \param[out] t The destination `FrameEventHistoryDelta`.
+ * \param[out] nh The underlying array of arrays of native handles.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR`, \p nh will be populated with `nullptr` or
+ * newly created handles. The second dimension of \p nh will be 4. Each non-null
+ * slot in \p nh will need to be deleted manually with `native_handle_delete()`.
+ */
+inline status_t unflatten(
+        IOmxBufferProducer::FrameEventHistoryDelta* t,
+        std::vector<std::vector<native_handle_t*> >* nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < 4) {
+        return NO_MEMORY;
+    }
+
+    uint32_t deltaCount = 0;
+    FlattenableUtils::read(buffer, size, deltaCount);
+    if (static_cast<size_t>(deltaCount) >
+            ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
+        return BAD_VALUE;
+    }
+    t->resize(deltaCount);
+    nh->resize(deltaCount);
+    for (size_t deltaIndex = 0; deltaIndex < deltaCount; ++deltaIndex) {
+        status_t status = unflatten(
+                &((*t)[deltaIndex]), &((*nh)[deltaIndex]),
+                buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `FrameEventHistoryDelta`.
+ *
+ * \param[in] t The source `FrameEventHistoryDelta`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate file descriptors contained in \p t.
+ */
+inline status_t flatten(
+        IOmxBufferProducer::FrameEventHistoryDelta const& t,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (t.size() > ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
+        return BAD_VALUE;
+    }
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, static_cast<uint32_t>(t.size()));
+    for (size_t deltaIndex = 0; deltaIndex < t.size(); ++deltaIndex) {
+        status_t status = flatten(t[deltaIndex], buffer, size, fds, numFds);
+        if (status != NO_ERROR) {
+            return status;
+        }
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Wrap `::android::FrameEventHistoryData` in
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * \param[out] t The wrapper of type
+ * `IOmxBufferProducer::FrameEventHistoryDelta`.
+ * \param[out] nh The array of array of native handles that are referred to by
+ * members of \p t.
+ * \param[in] l The source `::android::FrameEventHistoryDelta`.
+ *
+ * On success, each member of \p nh will be either `nullptr` or a newly created
+ * native handle. All the non-`nullptr` elements must be deleted individually
+ * with `native_handle_delete()`.
+ */
+inline bool wrapAs(IOmxBufferProducer::FrameEventHistoryDelta* t,
+        std::vector<std::vector<native_handle_t*> >* nh,
+        ::android::FrameEventHistoryDelta const& l) {
+
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = l.getFdCount();
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = baseFds.get();
+    size_t numFds = baseNumFds;
+    if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (unflatten(t, nh, constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::FrameEventHistoryDelta` to
+ * `::android::FrameEventHistoryDelta`.
+ *
+ * \param[out] l The destination `::android::FrameEventHistoryDelta`.
+ * \param[in] t The source `IOmxBufferProducer::FrameEventHistoryDelta`.
+ *
+ * This function will duplicate all file descriptors contained in \p t.
+ */
+inline bool convertTo(
+        ::android::FrameEventHistoryDelta* l,
+        IOmxBufferProducer::FrameEventHistoryDelta const& t) {
+
+    size_t const baseSize = getFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = getFdCount(t);
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = static_cast<int*>(baseFds.get());
+    size_t numFds = baseNumFds;
+    if (flatten(t, buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/ui/Region.cpp
+
+/**
+ * \brief Return the size of the buffer required to flatten `Region`.
+ *
+ * \param[in] t The input `Region`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(Region const& t) {
+    return sizeof(uint32_t) + t.size() * sizeof(::android::Rect);
+}
+
+/**
+ * \brief Unflatten `Region`.
+ *
+ * \param[out] t The destination `Region`.
+ * \param[in,out] buffer The pointer to the flat buffer.
+ * \param[in,out] size The size of the flat buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ */
+inline status_t unflatten(Region* t, void const*& buffer, size_t& size) {
+    if (size < sizeof(uint32_t)) {
+        return NO_MEMORY;
+    }
+
+    uint32_t numRects = 0;
+    FlattenableUtils::read(buffer, size, numRects);
+    if (size < numRects * sizeof(Rect)) {
+        return NO_MEMORY;
+    }
+    if (numRects > (UINT32_MAX / sizeof(Rect))) {
+        return NO_MEMORY;
+    }
+
+    t->resize(numRects);
+    for (size_t r = 0; r < numRects; ++r) {
+        ::android::Rect rect(::android::Rect::EMPTY_RECT);
+        status_t status = rect.unflatten(buffer, size);
+        if (status != NO_ERROR) {
+            return status;
+        }
+        FlattenableUtils::advance(buffer, size, sizeof(rect));
+        (*t)[r] = Rect{
+                static_cast<int32_t>(rect.left),
+                static_cast<int32_t>(rect.top),
+                static_cast<int32_t>(rect.right),
+                static_cast<int32_t>(rect.bottom)};
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Flatten `Region`.
+ *
+ * \param[in] t The source `Region`.
+ * \param[in,out] buffer The pointer to the flat buffer.
+ * \param[in,out] size The size of the flat buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ */
+inline status_t flatten(Region const& t, void*& buffer, size_t& size) {
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, static_cast<uint32_t>(t.size()));
+    for (size_t r = 0; r < t.size(); ++r) {
+        ::android::Rect rect(
+                static_cast<int32_t>(t[r].left),
+                static_cast<int32_t>(t[r].top),
+                static_cast<int32_t>(t[r].right),
+                static_cast<int32_t>(t[r].bottom));
+        status_t status = rect.flatten(buffer, size);
+        if (status != NO_ERROR) {
+            return status;
+        }
+        FlattenableUtils::advance(buffer, size, sizeof(rect));
+    }
+    return NO_ERROR;
+}
+
+/**
+ * \brief Convert `::android::Region` to `Region`.
+ *
+ * \param[out] t The destination `Region`.
+ * \param[in] l The source `::android::Region`.
+ */
+// convert: ::android::Region -> Region
+inline bool convertTo(Region* t, ::android::Region const& l) {
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    if (l.flatten(buffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    if (unflatten(t, constBuffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `Region` to `::android::Region`.
+ *
+ * \param[out] l The destination `::android::Region`.
+ * \param[in] t The source `Region`.
+ */
+// convert: Region -> ::android::Region
+inline bool convertTo(::android::Region* l, Region const& t) {
+    size_t const baseSize = getFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    if (flatten(t, buffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    if (l->unflatten(constBuffer, size) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/gui/IGraphicBufferProducer.cpp:
+//      IGraphicBufferProducer::QueueBufferInput
+
+/**
+ * \brief Return a lower bound on the size of the buffer required to flatten
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::QueueBufferInput`.
+ * \return A lower bound on the size of the flat buffer.
+ */
+constexpr size_t minFlattenedSize(
+        IOmxBufferProducer::QueueBufferInput const& /* t */) {
+    return sizeof(int64_t) + // timestamp
+            sizeof(int) + // isAutoTimestamp
+            sizeof(android_dataspace) + // dataSpace
+            sizeof(::android::Rect) + // crop
+            sizeof(int) + // scalingMode
+            sizeof(uint32_t) + // transform
+            sizeof(uint32_t) + // stickyTransform
+            sizeof(bool); // getFrameTimestamps
+}
+
+/**
+ * \brief Return the size of the buffer required to flatten
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::QueueBufferInput`.
+ * \return The required size of the flat buffer.
+ */
+inline size_t getFlattenedSize(IOmxBufferProducer::QueueBufferInput const& t) {
+    return minFlattenedSize(t) +
+            getFenceFlattenedSize(t.fence) +
+            getFlattenedSize(t.surfaceDamage);
+}
+
+/**
+ * \brief Return the number of file descriptors contained in
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The input `IOmxBufferProducer::QueueBufferInput`.
+ * \return The number of file descriptors contained in \p t.
+ */
+inline size_t getFdCount(
+        IOmxBufferProducer::QueueBufferInput const& t) {
+    return getFenceFdCount(t.fence);
+}
+
+/**
+ * \brief Flatten `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[in] t The source `IOmxBufferProducer::QueueBufferInput`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * This function will duplicate the file descriptor in `t.fence`. */
+inline status_t flatten(IOmxBufferProducer::QueueBufferInput const& t,
+        void*& buffer, size_t& size, int*& fds, size_t& numFds) {
+    if (size < getFlattenedSize(t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, t.timestamp);
+    FlattenableUtils::write(buffer, size, static_cast<int>(t.isAutoTimestamp));
+    FlattenableUtils::write(buffer, size,
+            static_cast<android_dataspace_t>(t.dataSpace));
+    FlattenableUtils::write(buffer, size, ::android::Rect(
+            static_cast<int32_t>(t.crop.left),
+            static_cast<int32_t>(t.crop.top),
+            static_cast<int32_t>(t.crop.right),
+            static_cast<int32_t>(t.crop.bottom)));
+    FlattenableUtils::write(buffer, size, static_cast<int>(t.scalingMode));
+    FlattenableUtils::write(buffer, size, t.transform);
+    FlattenableUtils::write(buffer, size, t.stickyTransform);
+    FlattenableUtils::write(buffer, size, t.getFrameTimestamps);
+
+    status_t status = flattenFence(t.fence, buffer, size, fds, numFds);
+    if (status != NO_ERROR) {
+        return status;
+    }
+    return flatten(t.surfaceDamage, buffer, size);
+}
+
+/**
+ * \brief Unflatten `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[out] t The destination `IOmxBufferProducer::QueueBufferInput`.
+ * \param[out] nh The underlying native handle for `t->fence`.
+ * \param[in,out] buffer The pointer to the flat non-fd buffer.
+ * \param[in,out] size The size of the flat non-fd buffer.
+ * \param[in,out] fds The pointer to the flat fd buffer.
+ * \param[in,out] numFds The size of the flat fd buffer.
+ * \return `NO_ERROR` on success; other value on failure.
+ *
+ * If the return value is `NO_ERROR` and `t->fence` contains a valid file
+ * descriptor, \p nh will be a newly created native handle holding that file
+ * descriptor. \p nh needs to be deleted with `native_handle_delete()`
+ * afterwards.
+ */
+inline status_t unflatten(
+        IOmxBufferProducer::QueueBufferInput* t, native_handle_t** nh,
+        void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
+    if (size < minFlattenedSize(*t)) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::read(buffer, size, t->timestamp);
+    int lIsAutoTimestamp;
+    FlattenableUtils::read(buffer, size, lIsAutoTimestamp);
+    t->isAutoTimestamp = static_cast<int32_t>(lIsAutoTimestamp);
+    android_dataspace_t lDataSpace;
+    FlattenableUtils::read(buffer, size, lDataSpace);
+    t->dataSpace = static_cast<Dataspace>(lDataSpace);
+    Rect lCrop;
+    FlattenableUtils::read(buffer, size, lCrop);
+    t->crop = Rect{
+            static_cast<int32_t>(lCrop.left),
+            static_cast<int32_t>(lCrop.top),
+            static_cast<int32_t>(lCrop.right),
+            static_cast<int32_t>(lCrop.bottom)};
+    int lScalingMode;
+    FlattenableUtils::read(buffer, size, lScalingMode);
+    t->scalingMode = static_cast<int32_t>(lScalingMode);
+    FlattenableUtils::read(buffer, size, t->transform);
+    FlattenableUtils::read(buffer, size, t->stickyTransform);
+    FlattenableUtils::read(buffer, size, t->getFrameTimestamps);
+
+    status_t status = unflattenFence(&(t->fence), nh,
+            buffer, size, fds, numFds);
+    if (status != NO_ERROR) {
+        return status;
+    }
+    return unflatten(&(t->surfaceDamage), buffer, size);
+}
+
+/**
+ * \brief Wrap `IGraphicBufferProducer::QueueBufferInput` in
+ * `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * \param[out] t The wrapper of type
+ * `IOmxBufferProducer::QueueBufferInput`.
+ * \param[out] nh The underlying native handle for `t->fence`.
+ * \param[in] l The source `IGraphicBufferProducer::QueueBufferInput`.
+ *
+ * If the return value is `true` and `t->fence` contains a valid file
+ * descriptor, \p nh will be a newly created native handle holding that file
+ * descriptor. \p nh needs to be deleted with `native_handle_delete()`
+ * afterwards.
+ */
+inline bool wrapAs(
+        IOmxBufferProducer::QueueBufferInput* t,
+        native_handle_t** nh,
+        IGraphicBufferProducer::QueueBufferInput const& l) {
+
+    size_t const baseSize = l.getFlattenedSize();
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = l.getFdCount();
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = baseFds.get();
+    size_t numFds = baseNumFds;
+    if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (unflatten(t, nh, constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::QueueBufferInput` to
+ * `IGraphicBufferProducer::QueueBufferInput`.
+ *
+ * \param[out] l The destination `IGraphicBufferProducer::QueueBufferInput`.
+ * \param[in] t The source `IOmxBufferProducer::QueueBufferInput`.
+ *
+ * If `t.fence` has a valid file descriptor, it will be duplicated.
+ */
+inline bool convertTo(
+        IGraphicBufferProducer::QueueBufferInput* l,
+        IOmxBufferProducer::QueueBufferInput const& t) {
+
+    size_t const baseSize = getFlattenedSize(t);
+    std::unique_ptr<uint8_t[]> baseBuffer(
+            new (std::nothrow) uint8_t[baseSize]);
+    if (!baseBuffer) {
+        return false;
+    }
+
+    size_t const baseNumFds = getFdCount(t);
+    std::unique_ptr<int[]> baseFds(
+            new (std::nothrow) int[baseNumFds]);
+    if (!baseFds) {
+        return false;
+    }
+
+    void* buffer = static_cast<void*>(baseBuffer.get());
+    size_t size = baseSize;
+    int* fds = baseFds.get();
+    size_t numFds = baseNumFds;
+    if (flatten(t, buffer, size, fds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    void const* constBuffer = static_cast<void const*>(baseBuffer.get());
+    size = baseSize;
+    int const* constFds = static_cast<int const*>(baseFds.get());
+    numFds = baseNumFds;
+    if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
+        return false;
+    }
+
+    return true;
+}
+
+// Ref: frameworks/native/libs/gui/IGraphicBufferProducer.cpp:
+//      IGraphicBufferProducer::QueueBufferOutput
+
+/**
+ * \brief Wrap `IGraphicBufferProducer::QueueBufferOutput` in
+ * `IOmxBufferProducer::QueueBufferOutput`.
+ *
+ * \param[out] t The wrapper of type
+ * `IOmxBufferProducer::QueueBufferOutput`.
+ * \param[out] nh The array of array of native handles that are referred to by
+ * members of \p t.
+ * \param[in] l The source `IGraphicBufferProducer::QueueBufferOutput`.
+ *
+ * On success, each member of \p nh will be either `nullptr` or a newly created
+ * native handle. All the non-`nullptr` elements must be deleted individually
+ * with `native_handle_delete()`.
+ */
+// wrap: IGraphicBufferProducer::QueueBufferOutput ->
+// IOmxBufferProducer::QueueBufferOutput
+inline bool wrapAs(IOmxBufferProducer::QueueBufferOutput* t,
+        std::vector<std::vector<native_handle_t*> >* nh,
+        IGraphicBufferProducer::QueueBufferOutput const& l) {
+    if (!wrapAs(&(t->frameTimestamps), nh, l.frameTimestamps)) {
+        return false;
+    }
+    t->width = l.width;
+    t->height = l.height;
+    t->transformHint = l.transformHint;
+    t->numPendingBuffers = l.numPendingBuffers;
+    t->nextFrameNumber = l.nextFrameNumber;
+    return true;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::QueueBufferOutput` to
+ * `IGraphicBufferProducer::QueueBufferOutput`.
+ *
+ * \param[out] l The destination `IGraphicBufferProducer::QueueBufferOutput`.
+ * \param[in] t The source `IOmxBufferProducer::QueueBufferOutput`.
+ *
+ * This function will duplicate all file descriptors contained in \p t.
+ */
+// convert: IOmxBufferProducer::QueueBufferOutput ->
+// IGraphicBufferProducer::QueueBufferOutput
+inline bool convertTo(
+        IGraphicBufferProducer::QueueBufferOutput* l,
+        IOmxBufferProducer::QueueBufferOutput const& t) {
+    if (!convertTo(&(l->frameTimestamps), t.frameTimestamps)) {
+        return false;
+    }
+    l->width = t.width;
+    l->height = t.height;
+    l->transformHint = t.transformHint;
+    l->numPendingBuffers = t.numPendingBuffers;
+    l->nextFrameNumber = t.nextFrameNumber;
+    return true;
+}
+
+/**
+ * \brief Convert `IGraphicBufferProducer::DisconnectMode` to
+ * `IOmxBufferProducer::DisconnectMode`.
+ *
+ * \param[in] l The source `IGraphicBufferProducer::DisconnectMode`.
+ * \return The corresponding `IOmxBufferProducer::DisconnectMode`.
+ */
+inline IOmxBufferProducer::DisconnectMode toOmxDisconnectMode(
+        IGraphicBufferProducer::DisconnectMode l) {
+    switch (l) {
+        case IGraphicBufferProducer::DisconnectMode::Api:
+            return IOmxBufferProducer::DisconnectMode::API;
+        case IGraphicBufferProducer::DisconnectMode::AllLocal:
+            return IOmxBufferProducer::DisconnectMode::ALL_LOCAL;
+    }
+    return IOmxBufferProducer::DisconnectMode::API;
+}
+
+/**
+ * \brief Convert `IOmxBufferProducer::DisconnectMode` to
+ * `IGraphicBufferProducer::DisconnectMode`.
+ *
+ * \param[in] l The source `IOmxBufferProducer::DisconnectMode`.
+ * \return The corresponding `IGraphicBufferProducer::DisconnectMode`.
+ */
+inline IGraphicBufferProducer::DisconnectMode toGuiDisconnectMode(
+        IOmxBufferProducer::DisconnectMode t) {
+    switch (t) {
+        case IOmxBufferProducer::DisconnectMode::API:
+            return IGraphicBufferProducer::DisconnectMode::Api;
+        case IOmxBufferProducer::DisconnectMode::ALL_LOCAL:
+            return IGraphicBufferProducer::DisconnectMode::AllLocal;
+    }
+    return IGraphicBufferProducer::DisconnectMode::Api;
+}
+
+}  // namespace utils
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
diff --git a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.cpp b/media/libstagefright/omx/hal/1.0/utils/WGraphicBufferSource.cpp
similarity index 85%
copy from media/libstagefright/omx/hal/1.0/WGraphicBufferSource.cpp
copy to media/libstagefright/omx/hal/1.0/utils/WGraphicBufferSource.cpp
index 0ec31f2..037e9b2 100644
--- a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.cpp
+++ b/media/libstagefright/omx/hal/1.0/utils/WGraphicBufferSource.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include "WGraphicBufferSource.h"
 #include "Conversion.h"
 #include "WOmxNode.h"
@@ -8,7 +24,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using android::ColorUtils;
 
@@ -116,7 +132,7 @@
     return toHardwareStatus(mBase->signalEndOfInputStream());
 }
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.h b/media/libstagefright/omx/hal/1.0/utils/WGraphicBufferSource.h
similarity index 84%
copy from media/libstagefright/omx/hal/1.0/WGraphicBufferSource.h
copy to media/libstagefright/omx/hal/1.0/utils/WGraphicBufferSource.h
index 66977ad..17a4486 100644
--- a/media/libstagefright/omx/hal/1.0/WGraphicBufferSource.h
+++ b/media/libstagefright/omx/hal/1.0/utils/WGraphicBufferSource.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WGRAPHICBUFFERSOURCE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WGRAPHICBUFFERSOURCE_H
 
@@ -17,7 +33,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using ::android::hardware::graphics::common::V1_0::Dataspace;
 using ::android::hardware::media::omx::V1_0::ColorAspects;
@@ -82,7 +98,7 @@
     Return<void> signalEndOfInputStream() override;
 };
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/utils/WOmx.cpp b/media/libstagefright/omx/hal/1.0/utils/WOmx.cpp
new file mode 100644
index 0000000..07c9255
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmx.cpp
@@ -0,0 +1,130 @@
+/*
+ * 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.
+ */
+
+#include "WOmx.h"
+#include "WOmxNode.h"
+#include "WOmxObserver.h"
+#include "WOmxBufferProducer.h"
+#include "WGraphicBufferSource.h"
+#include "Conversion.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace utils {
+
+// LWOmx
+LWOmx::LWOmx(sp<IOmx> const& base) : mBase(base) {
+}
+
+status_t LWOmx::listNodes(List<IOMX::ComponentInfo>* list) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->listNodes(
+            [&fnStatus, list](
+                    Status status,
+                    hidl_vec<IOmx::ComponentInfo> const& nodeList) {
+                fnStatus = toStatusT(status);
+                list->clear();
+                for (size_t i = 0; i < nodeList.size(); ++i) {
+                    auto newInfo = list->insert(
+                            list->end(), IOMX::ComponentInfo());
+                    convertTo(&*newInfo, nodeList[i]);
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmx::allocateNode(
+        char const* name,
+        sp<IOMXObserver> const& observer,
+        sp<IOMXNode>* omxNode) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->allocateNode(
+            name, new TWOmxObserver(observer),
+            [&fnStatus, omxNode](Status status, sp<IOmxNode> const& node) {
+                fnStatus = toStatusT(status);
+                *omxNode = new LWOmxNode(node);
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmx::createInputSurface(
+        sp<::android::IGraphicBufferProducer>* bufferProducer,
+        sp<::android::IGraphicBufferSource>* bufferSource) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->createInputSurface(
+            [&fnStatus, bufferProducer, bufferSource] (
+                    Status status,
+                    sp<IOmxBufferProducer> const& tProducer,
+                    sp<IGraphicBufferSource> const& tSource) {
+                fnStatus = toStatusT(status);
+                *bufferProducer = new LWOmxBufferProducer(tProducer);
+                *bufferSource = new LWGraphicBufferSource(tSource);
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+::android::IBinder* LWOmx::onAsBinder() {
+    return nullptr;
+}
+
+// TWOmx
+TWOmx::TWOmx(sp<IOMX> const& base) : mBase(base) {
+}
+
+Return<void> TWOmx::listNodes(listNodes_cb _hidl_cb) {
+    List<IOMX::ComponentInfo> lList;
+    Status status = toStatus(mBase->listNodes(&lList));
+
+    hidl_vec<IOmx::ComponentInfo> tList;
+    tList.resize(lList.size());
+    size_t i = 0;
+    for (auto const& lInfo : lList) {
+        convertTo(&(tList[i++]), lInfo);
+    }
+    _hidl_cb(status, tList);
+    return Void();
+}
+
+Return<void> TWOmx::allocateNode(
+        const hidl_string& name,
+        const sp<IOmxObserver>& observer,
+        allocateNode_cb _hidl_cb) {
+    sp<IOMXNode> omxNode;
+    Status status = toStatus(mBase->allocateNode(
+            name, new LWOmxObserver(observer), &omxNode));
+    _hidl_cb(status, new TWOmxNode(omxNode));
+    return Void();
+}
+
+Return<void> TWOmx::createInputSurface(createInputSurface_cb _hidl_cb) {
+    sp<::android::IGraphicBufferProducer> lProducer;
+    sp<::android::IGraphicBufferSource> lSource;
+    status_t status = mBase->createInputSurface(&lProducer, &lSource);
+    _hidl_cb(toStatus(status),
+             new TWOmxBufferProducer(lProducer),
+             new TWGraphicBufferSource(lSource));
+    return Void();
+}
+
+}  // namespace utils
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/WOmx.h b/media/libstagefright/omx/hal/1.0/utils/WOmx.h
similarity index 74%
copy from media/libstagefright/omx/hal/1.0/WOmx.h
copy to media/libstagefright/omx/hal/1.0/utils/WOmx.h
index b07c4f2..26affad 100644
--- a/media/libstagefright/omx/hal/1.0/WOmx.h
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmx.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMX_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMX_H
 
@@ -12,7 +28,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using ::android::hardware::media::omx::V1_0::IOmx;
 using ::android::hardware::media::omx::V1_0::IOmxNode;
@@ -62,10 +78,11 @@
             const hidl_string& name,
             const sp<IOmxObserver>& observer,
             allocateNode_cb _hidl_cb) override;
+    Return<void> createInputSurface(createInputSurface_cb _hidl_cb) override;
 
 };
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/utils/WOmxBufferProducer.cpp b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferProducer.cpp
new file mode 100644
index 0000000..49f2706
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferProducer.cpp
@@ -0,0 +1,594 @@
+/*
+ * 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.
+ */
+
+#include "WOmxBufferProducer.h"
+#include "WOmxProducerListener.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace utils {
+
+// TWOmxBufferProducer
+TWOmxBufferProducer::TWOmxBufferProducer(
+        sp<IGraphicBufferProducer> const& base):
+    mBase(base) {
+}
+
+Return<void> TWOmxBufferProducer::requestBuffer(
+        int32_t slot, requestBuffer_cb _hidl_cb) {
+    sp<GraphicBuffer> buf;
+    status_t status = mBase->requestBuffer(slot, &buf);
+    AnwBuffer anwBuffer;
+    wrapAs(&anwBuffer, *buf);
+    _hidl_cb(toStatus(status), anwBuffer);
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::setMaxDequeuedBufferCount(
+        int32_t maxDequeuedBuffers) {
+    return toStatus(mBase->setMaxDequeuedBufferCount(
+            static_cast<int>(maxDequeuedBuffers)));
+}
+
+Return<Status> TWOmxBufferProducer::setAsyncMode(bool async) {
+    return toStatus(mBase->setAsyncMode(async));
+}
+
+Return<void> TWOmxBufferProducer::dequeueBuffer(
+        uint32_t width, uint32_t height,
+        PixelFormat format, uint32_t usage,
+        bool getFrameTimestamps, dequeueBuffer_cb _hidl_cb) {
+    int slot;
+    sp<Fence> fence;
+    ::android::FrameEventHistoryDelta outTimestamps;
+    status_t status = mBase->dequeueBuffer(
+            &slot, &fence,
+            width, height,
+            static_cast<::android::PixelFormat>(format), usage,
+            getFrameTimestamps ? &outTimestamps : nullptr);
+
+    hidl_handle tFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tFence, &nh, *fence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::dequeueBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+    FrameEventHistoryDelta tOutTimestamps;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (getFrameTimestamps && !wrapAs(&tOutTimestamps, &nhAA, outTimestamps)) {
+        native_handle_delete(nh);
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::dequeueBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+
+    _hidl_cb(toStatus(status),
+            static_cast<int32_t>(slot),
+            tFence,
+            tOutTimestamps);
+    native_handle_delete(nh);
+    if (getFrameTimestamps) {
+        for (auto& nhA : nhAA) {
+            for (auto& handle : nhA) {
+                if (handle != nullptr) {
+                    native_handle_delete(handle);
+                }
+            }
+        }
+    }
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::detachBuffer(int32_t slot) {
+    return toStatus(mBase->detachBuffer(slot));
+}
+
+Return<void> TWOmxBufferProducer::detachNextBuffer(
+        detachNextBuffer_cb _hidl_cb) {
+    sp<GraphicBuffer> outBuffer;
+    sp<Fence> outFence;
+    status_t status = mBase->detachNextBuffer(&outBuffer, &outFence);
+
+    AnwBuffer tBuffer;
+    wrapAs(&tBuffer, *outBuffer);
+    hidl_handle tFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tFence, &nh, *outFence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::detachNextBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+
+    _hidl_cb(toStatus(status), tBuffer, tFence);
+    native_handle_delete(nh);
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::attachBuffer(
+        const AnwBuffer& buffer,
+        attachBuffer_cb _hidl_cb) {
+    int outSlot;
+    sp<GraphicBuffer> lBuffer = new GraphicBuffer();
+    if (!convertTo(lBuffer.get(), buffer)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::attachBuffer(): "
+                "Cannot convert AnwBuffer to GraphicBuffer"));
+    }
+    status_t status = mBase->attachBuffer(&outSlot, lBuffer);
+
+    _hidl_cb(toStatus(status), static_cast<int32_t>(outSlot));
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::queueBuffer(
+        int32_t slot, const QueueBufferInput& input,
+        queueBuffer_cb _hidl_cb) {
+    IGraphicBufferProducer::QueueBufferInput lInput(
+            0, false, HAL_DATASPACE_UNKNOWN,
+            ::android::Rect(0, 0, 1, 1),
+            NATIVE_WINDOW_SCALING_MODE_FREEZE,
+            0, ::android::Fence::NO_FENCE);
+    if (!convertTo(&lInput, input)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::queueBuffer(): "
+                "Cannot convert IOmxBufferProducer::QueueBufferInput "
+                "to IGraphicBufferProducer::QueueBufferInput"));
+    }
+    IGraphicBufferProducer::QueueBufferOutput lOutput;
+    status_t status = mBase->queueBuffer(
+            static_cast<int>(slot), lInput, &lOutput);
+
+    QueueBufferOutput tOutput;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (!wrapAs(&tOutput, &nhAA, lOutput)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::queueBuffer(): "
+                "Cannot wrap IGraphicBufferProducer::QueueBufferOutput "
+                "in IOmxBufferProducer::QueueBufferOutput"));
+    }
+
+    _hidl_cb(toStatus(status), tOutput);
+    for (auto& nhA : nhAA) {
+        for (auto& nh : nhA) {
+            if (nh != nullptr) {
+                native_handle_delete(nh);
+            }
+        }
+    }
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::cancelBuffer(
+        int32_t slot, const hidl_handle& fence) {
+    sp<Fence> lFence = new Fence();
+    if (!convertTo(lFence.get(), fence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::cancelBuffer(): "
+                "Cannot convert hidl_handle to Fence"));
+    }
+    return toStatus(mBase->cancelBuffer(static_cast<int>(slot), lFence));
+}
+
+Return<void> TWOmxBufferProducer::query(int32_t what, query_cb _hidl_cb) {
+    int lValue;
+    int lReturn = mBase->query(static_cast<int>(what), &lValue);
+    _hidl_cb(static_cast<int32_t>(lReturn), static_cast<int32_t>(lValue));
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::connect(
+        const sp<IOmxProducerListener>& listener,
+        int32_t api, bool producerControlledByApp, connect_cb _hidl_cb) {
+    sp<IProducerListener> lListener = new LWOmxProducerListener(listener);
+    IGraphicBufferProducer::QueueBufferOutput lOutput;
+    status_t status = mBase->connect(lListener,
+            static_cast<int>(api),
+            producerControlledByApp,
+            &lOutput);
+
+    QueueBufferOutput tOutput;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (!wrapAs(&tOutput, &nhAA, lOutput)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::connect(): "
+                "Cannot wrap IGraphicBufferProducer::QueueBufferOutput "
+                "in IOmxBufferProducer::QueueBufferOutput"));
+    }
+
+    _hidl_cb(toStatus(status), tOutput);
+    for (auto& nhA : nhAA) {
+        for (auto& nh : nhA) {
+            if (nh != nullptr) {
+                native_handle_delete(nh);
+            }
+        }
+    }
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::disconnect(
+        int32_t api, DisconnectMode mode) {
+    return toStatus(mBase->disconnect(
+            static_cast<int>(api),
+            toGuiDisconnectMode(mode)));
+}
+
+Return<Status> TWOmxBufferProducer::setSidebandStream(const hidl_handle& stream) {
+    return toStatus(mBase->setSidebandStream(NativeHandle::create(
+            native_handle_clone(stream), true)));
+}
+
+Return<void> TWOmxBufferProducer::allocateBuffers(
+        uint32_t width, uint32_t height, PixelFormat format, uint32_t usage) {
+    mBase->allocateBuffers(
+            width, height,
+            static_cast<::android::PixelFormat>(format),
+            usage);
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::allowAllocation(bool allow) {
+    return toStatus(mBase->allowAllocation(allow));
+}
+
+Return<Status> TWOmxBufferProducer::setGenerationNumber(uint32_t generationNumber) {
+    return toStatus(mBase->setGenerationNumber(generationNumber));
+}
+
+Return<void> TWOmxBufferProducer::getConsumerName(getConsumerName_cb _hidl_cb) {
+    _hidl_cb(mBase->getConsumerName().string());
+    return Void();
+}
+
+Return<Status> TWOmxBufferProducer::setSharedBufferMode(bool sharedBufferMode) {
+    return toStatus(mBase->setSharedBufferMode(sharedBufferMode));
+}
+
+Return<Status> TWOmxBufferProducer::setAutoRefresh(bool autoRefresh) {
+    return toStatus(mBase->setAutoRefresh(autoRefresh));
+}
+
+Return<Status> TWOmxBufferProducer::setDequeueTimeout(int64_t timeoutNs) {
+    return toStatus(mBase->setDequeueTimeout(timeoutNs));
+}
+
+Return<void> TWOmxBufferProducer::getLastQueuedBuffer(
+        getLastQueuedBuffer_cb _hidl_cb) {
+    sp<GraphicBuffer> lOutBuffer = new GraphicBuffer();
+    sp<Fence> lOutFence = new Fence();
+    float lOutTransformMatrix[16];
+    status_t status = mBase->getLastQueuedBuffer(
+            &lOutBuffer, &lOutFence, lOutTransformMatrix);
+
+    AnwBuffer tOutBuffer;
+    wrapAs(&tOutBuffer, *lOutBuffer);
+    hidl_handle tOutFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tOutFence, &nh, *lOutFence)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::getLastQueuedBuffer(): "
+                "Cannot wrap Fence in hidl_handle"));
+    }
+    hidl_array<float, 16> tOutTransformMatrix(lOutTransformMatrix);
+
+    _hidl_cb(toStatus(status), tOutBuffer, tOutFence, tOutTransformMatrix);
+    native_handle_delete(nh);
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::getFrameTimestamps(
+        getFrameTimestamps_cb _hidl_cb) {
+    ::android::FrameEventHistoryDelta lDelta;
+    mBase->getFrameTimestamps(&lDelta);
+
+    FrameEventHistoryDelta tDelta;
+    std::vector<std::vector<native_handle_t*> > nhAA;
+    if (!wrapAs(&tDelta, &nhAA, lDelta)) {
+        return ::android::hardware::Status::fromExceptionCode(
+                ::android::hardware::Status::EX_BAD_PARCELABLE,
+                String8("TWOmxBufferProducer::getFrameTimestamps(): "
+                "Cannot wrap ::android::FrameEventHistoryDelta "
+                "in FrameEventHistoryDelta"));
+    }
+
+    _hidl_cb(tDelta);
+    for (auto& nhA : nhAA) {
+        for (auto& nh : nhA) {
+            if (nh != nullptr) {
+                native_handle_delete(nh);
+            }
+        }
+    }
+    return Void();
+}
+
+Return<void> TWOmxBufferProducer::getUniqueId(getUniqueId_cb _hidl_cb) {
+    uint64_t outId;
+    status_t status = mBase->getUniqueId(&outId);
+    _hidl_cb(toStatus(status), outId);
+    return Void();
+}
+
+// LWOmxBufferProducer
+
+LWOmxBufferProducer::LWOmxBufferProducer(sp<IOmxBufferProducer> const& base) :
+    mBase(base) {
+}
+
+status_t LWOmxBufferProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
+    *buf = new GraphicBuffer();
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->requestBuffer(
+            static_cast<int32_t>(slot),
+            [&fnStatus, &buf] (Status status, AnwBuffer const& buffer) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(buf->get(), buffer)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::setMaxDequeuedBufferCount(
+        int maxDequeuedBuffers) {
+    return toStatusT(mBase->setMaxDequeuedBufferCount(
+            static_cast<int32_t>(maxDequeuedBuffers)));
+}
+
+status_t LWOmxBufferProducer::setAsyncMode(bool async) {
+    return toStatusT(mBase->setAsyncMode(async));
+}
+
+status_t LWOmxBufferProducer::dequeueBuffer(
+        int* slot, sp<Fence>* fence,
+        uint32_t w, uint32_t h, ::android::PixelFormat format,
+        uint32_t usage, FrameEventHistoryDelta* outTimestamps) {
+    *fence = new Fence();
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->dequeueBuffer(
+            w, h, static_cast<PixelFormat>(format), usage,
+            outTimestamps != nullptr,
+            [&fnStatus, slot, fence, outTimestamps] (
+                    Status status,
+                    int32_t tSlot,
+                    hidl_handle const& tFence,
+                    IOmxBufferProducer::FrameEventHistoryDelta const& tTs) {
+                fnStatus = toStatusT(status);
+                *slot = tSlot;
+                if (!convertTo(fence->get(), tFence)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                if (outTimestamps && !convertTo(outTimestamps, tTs)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::detachBuffer(int slot) {
+    return toStatusT(mBase->detachBuffer(static_cast<int>(slot)));
+}
+
+status_t LWOmxBufferProducer::detachNextBuffer(
+        sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence) {
+    *outBuffer = new GraphicBuffer();
+    *outFence = new Fence();
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->detachNextBuffer(
+            [&fnStatus, outBuffer, outFence] (
+                    Status status,
+                    AnwBuffer const& tBuffer,
+                    hidl_handle const& tFence) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(outFence->get(), tFence)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                if (!convertTo(outBuffer->get(), tBuffer)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::attachBuffer(
+        int* outSlot, const sp<GraphicBuffer>& buffer) {
+    AnwBuffer tBuffer;
+    wrapAs(&tBuffer, *buffer);
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->attachBuffer(tBuffer,
+            [&fnStatus, outSlot] (Status status, int32_t slot) {
+                fnStatus = toStatusT(status);
+                *outSlot = slot;
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::queueBuffer(
+        int slot,
+        const QueueBufferInput& input,
+        QueueBufferOutput* output) {
+    IOmxBufferProducer::QueueBufferInput tInput;
+    native_handle_t* nh;
+    if (!wrapAs(&tInput, &nh, input)) {
+        return BAD_VALUE;
+    }
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->queueBuffer(slot, tInput,
+            [&fnStatus, output] (
+                    Status status,
+                    IOmxBufferProducer::QueueBufferOutput const& tOutput) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(output, tOutput)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    native_handle_delete(nh);
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::cancelBuffer(int slot, const sp<Fence>& fence) {
+    hidl_handle tFence;
+    native_handle_t* nh;
+    if (!wrapAs(&tFence, &nh, *fence)) {
+        return BAD_VALUE;
+    }
+
+    status_t status = toStatusT(mBase->cancelBuffer(
+            static_cast<int32_t>(slot), tFence));
+    native_handle_delete(nh);
+    return status;
+}
+
+int LWOmxBufferProducer::query(int what, int* value) {
+    int result;
+    status_t transStatus = toStatusT(mBase->query(
+            static_cast<int32_t>(what),
+            [&result, value] (int32_t tResult, int32_t tValue) {
+                result = static_cast<int>(tResult);
+                *value = static_cast<int>(tValue);
+            }));
+    return transStatus == NO_ERROR ? result : static_cast<int>(transStatus);
+}
+
+status_t LWOmxBufferProducer::connect(
+        const sp<IProducerListener>& listener, int api,
+        bool producerControlledByApp, QueueBufferOutput* output) {
+    sp<IOmxProducerListener> tListener = new TWOmxProducerListener(listener);
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->connect(
+            tListener, static_cast<int32_t>(api), producerControlledByApp,
+            [&fnStatus, output] (
+                    Status status,
+                    IOmxBufferProducer::QueueBufferOutput const& tOutput) {
+                fnStatus = toStatusT(status);
+                if (!convertTo(output, tOutput)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+status_t LWOmxBufferProducer::disconnect(int api, DisconnectMode mode) {
+    return toStatusT(mBase->disconnect(
+            static_cast<int32_t>(api), toOmxDisconnectMode(mode)));
+}
+
+status_t LWOmxBufferProducer::setSidebandStream(
+        const sp<NativeHandle>& stream) {
+    return toStatusT(mBase->setSidebandStream(stream->handle()));
+}
+
+void LWOmxBufferProducer::allocateBuffers(uint32_t width, uint32_t height,
+        ::android::PixelFormat format, uint32_t usage) {
+    mBase->allocateBuffers(
+            width, height, static_cast<PixelFormat>(format), usage);
+}
+
+status_t LWOmxBufferProducer::allowAllocation(bool allow) {
+    return toStatusT(mBase->allowAllocation(allow));
+}
+
+status_t LWOmxBufferProducer::setGenerationNumber(uint32_t generationNumber) {
+    return toStatusT(mBase->setGenerationNumber(generationNumber));
+}
+
+String8 LWOmxBufferProducer::getConsumerName() const {
+    String8 lName;
+    mBase->getConsumerName([&lName] (hidl_string const& name) {
+                lName = name.c_str();
+            });
+    return lName;
+}
+
+status_t LWOmxBufferProducer::setSharedBufferMode(bool sharedBufferMode) {
+    return toStatusT(mBase->setSharedBufferMode(sharedBufferMode));
+}
+
+status_t LWOmxBufferProducer::setAutoRefresh(bool autoRefresh) {
+    return toStatusT(mBase->setAutoRefresh(autoRefresh));
+}
+
+status_t LWOmxBufferProducer::setDequeueTimeout(nsecs_t timeout) {
+    return toStatusT(mBase->setDequeueTimeout(static_cast<int64_t>(timeout)));
+}
+
+status_t LWOmxBufferProducer::getLastQueuedBuffer(
+        sp<GraphicBuffer>* outBuffer,
+        sp<Fence>* outFence,
+        float outTransformMatrix[16]) {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->getLastQueuedBuffer(
+            [&fnStatus, outBuffer, outFence, &outTransformMatrix] (
+                    Status status,
+                    AnwBuffer const& buffer,
+                    hidl_handle const& fence,
+                    hidl_array<float, 16> const& transformMatrix) {
+                fnStatus = toStatusT(status);
+                *outBuffer = new GraphicBuffer();
+                if (!convertTo(outBuffer->get(), buffer)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                *outFence = new Fence();
+                if (!convertTo(outFence->get(), fence)) {
+                    fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
+                }
+                std::copy(transformMatrix.data(),
+                        transformMatrix.data() + 16,
+                        outTransformMatrix);
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+void LWOmxBufferProducer::getFrameTimestamps(FrameEventHistoryDelta* outDelta) {
+    mBase->getFrameTimestamps([outDelta] (
+            IOmxBufferProducer::FrameEventHistoryDelta const& tDelta) {
+                convertTo(outDelta, tDelta);
+            });
+}
+
+status_t LWOmxBufferProducer::getUniqueId(uint64_t* outId) const {
+    status_t fnStatus;
+    status_t transStatus = toStatusT(mBase->getUniqueId(
+            [&fnStatus, outId] (Status status, uint64_t id) {
+                fnStatus = toStatusT(status);
+                *outId = id;
+            }));
+    return transStatus == NO_ERROR ? fnStatus : transStatus;
+}
+
+::android::IBinder* LWOmxBufferProducer::onAsBinder() {
+    return nullptr;
+}
+
+}  // namespace utils
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/utils/WOmxBufferProducer.h b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferProducer.h
new file mode 100644
index 0000000..46abd27
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferProducer.h
@@ -0,0 +1,142 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERPRODUCER_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERPRODUCER_H
+
+#include <android/hardware/media/omx/1.0/IOmxBufferProducer.h>
+#include <binder/Binder.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/IProducerListener.h>
+#include "Conversion.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace utils {
+
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+using ::android::hardware::media::omx::V1_0::IOmxBufferProducer;
+using ::android::hardware::media::omx::V1_0::IOmxProducerListener;
+using ::android::hardware::media::omx::V1_0::Status;
+using ::android::hardware::media::V1_0::AnwBuffer;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+using ::android::IGraphicBufferProducer;
+using ::android::IProducerListener;
+
+struct TWOmxBufferProducer : public IOmxBufferProducer {
+    sp<IGraphicBufferProducer> mBase;
+    TWOmxBufferProducer(sp<IGraphicBufferProducer> const& base);
+    Return<void> requestBuffer(int32_t slot, requestBuffer_cb _hidl_cb)
+            override;
+    Return<Status> setMaxDequeuedBufferCount(int32_t maxDequeuedBuffers)
+            override;
+    Return<Status> setAsyncMode(bool async) override;
+    Return<void> dequeueBuffer(
+            uint32_t width, uint32_t height, PixelFormat format, uint32_t usage,
+            bool getFrameTimestamps, dequeueBuffer_cb _hidl_cb) override;
+    Return<Status> detachBuffer(int32_t slot) override;
+    Return<void> detachNextBuffer(detachNextBuffer_cb _hidl_cb) override;
+    Return<void> attachBuffer(const AnwBuffer& buffer, attachBuffer_cb _hidl_cb)
+            override;
+    Return<void> queueBuffer(
+            int32_t slot, const IOmxBufferProducer::QueueBufferInput& input,
+            queueBuffer_cb _hidl_cb) override;
+    Return<Status> cancelBuffer(int32_t slot, const hidl_handle& fence)
+            override;
+    Return<void> query(int32_t what, query_cb _hidl_cb) override;
+    Return<void> connect(const sp<IOmxProducerListener>& listener,
+            int32_t api, bool producerControlledByApp,
+            connect_cb _hidl_cb) override;
+    Return<Status> disconnect(
+            int32_t api,
+            IOmxBufferProducer::DisconnectMode mode) override;
+    Return<Status> setSidebandStream(const hidl_handle& stream) override;
+    Return<void> allocateBuffers(
+            uint32_t width, uint32_t height,
+            PixelFormat format, uint32_t usage) override;
+    Return<Status> allowAllocation(bool allow) override;
+    Return<Status> setGenerationNumber(uint32_t generationNumber) override;
+    Return<void> getConsumerName(getConsumerName_cb _hidl_cb) override;
+    Return<Status> setSharedBufferMode(bool sharedBufferMode) override;
+    Return<Status> setAutoRefresh(bool autoRefresh) override;
+    Return<Status> setDequeueTimeout(int64_t timeoutNs) override;
+    Return<void> getLastQueuedBuffer(getLastQueuedBuffer_cb _hidl_cb) override;
+    Return<void> getFrameTimestamps(getFrameTimestamps_cb _hidl_cb) override;
+    Return<void> getUniqueId(getUniqueId_cb _hidl_cb) override;
+};
+
+struct LWOmxBufferProducer : public IGraphicBufferProducer {
+    sp<IOmxBufferProducer> mBase;
+    LWOmxBufferProducer(sp<IOmxBufferProducer> const& base);
+
+    status_t requestBuffer(int slot, sp<GraphicBuffer>* buf) override;
+    status_t setMaxDequeuedBufferCount(int maxDequeuedBuffers) override;
+    status_t setAsyncMode(bool async) override;
+    status_t dequeueBuffer(int* slot, sp<Fence>* fence, uint32_t w,
+            uint32_t h, ::android::PixelFormat format, uint32_t usage,
+            FrameEventHistoryDelta* outTimestamps) override;
+    status_t detachBuffer(int slot) override;
+    status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence)
+            override;
+    status_t attachBuffer(int* outSlot, const sp<GraphicBuffer>& buffer)
+            override;
+    status_t queueBuffer(int slot,
+            const QueueBufferInput& input,
+            QueueBufferOutput* output) override;
+    status_t cancelBuffer(int slot, const sp<Fence>& fence) override;
+    int query(int what, int* value) override;
+    status_t connect(const sp<IProducerListener>& listener, int api,
+            bool producerControlledByApp, QueueBufferOutput* output) override;
+    status_t disconnect(int api, DisconnectMode mode = DisconnectMode::Api)
+            override;
+    status_t setSidebandStream(const sp<NativeHandle>& stream) override;
+    void allocateBuffers(uint32_t width, uint32_t height,
+            ::android::PixelFormat format, uint32_t usage) override;
+    status_t allowAllocation(bool allow) override;
+    status_t setGenerationNumber(uint32_t generationNumber) override;
+    String8 getConsumerName() const override;
+    status_t setSharedBufferMode(bool sharedBufferMode) override;
+    status_t setAutoRefresh(bool autoRefresh) override;
+    status_t setDequeueTimeout(nsecs_t timeout) override;
+    status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
+          sp<Fence>* outFence, float outTransformMatrix[16]) override;
+    void getFrameTimestamps(FrameEventHistoryDelta* outDelta) override;
+    status_t getUniqueId(uint64_t* outId) const override;
+protected:
+    ::android::IBinder* onAsBinder() override;
+};
+
+}  // namespace utils
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERPRODUCER_H
diff --git a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.cpp b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferSource.cpp
similarity index 76%
copy from media/libstagefright/omx/hal/1.0/WOmxBufferSource.cpp
copy to media/libstagefright/omx/hal/1.0/utils/WOmxBufferSource.cpp
index 79eb1be..1ebd9a7 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.cpp
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferSource.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include "WOmxBufferSource.h"
 #include "Conversion.h"
 #include <utils/String8.h>
@@ -8,7 +24,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 // LWOmxBufferSource
 LWOmxBufferSource::LWOmxBufferSource(sp<IOmxBufferSource> const& base) :
@@ -82,12 +98,15 @@
 Return<void> TWOmxBufferSource::onInputBufferEmptied(
         uint32_t buffer, hidl_handle const& fence) {
     OMXFenceParcelable fenceParcelable;
-    wrapAs(&fenceParcelable, fence);
+    if (!convertTo(&fenceParcelable, fence)) {
+      return ::android::hardware::Status::fromExceptionCode(
+              ::android::hardware::Status::EX_BAD_PARCELABLE);
+    }
     return toHardwareStatus(mBase->onInputBufferEmptied(
             static_cast<int32_t>(buffer), fenceParcelable));
 }
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.h b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferSource.h
similarity index 78%
copy from media/libstagefright/omx/hal/1.0/WOmxBufferSource.h
copy to media/libstagefright/omx/hal/1.0/utils/WOmxBufferSource.h
index 3ba9453..3bf35c5 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxBufferSource.h
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxBufferSource.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERSOURCE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXBUFFERSOURCE_H
 
@@ -14,7 +30,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using ::android::hardware::media::omx::V1_0::IOmxBufferSource;
 using ::android::hidl::base::V1_0::IBase;
@@ -64,7 +80,7 @@
 };
 
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/WOmxNode.cpp b/media/libstagefright/omx/hal/1.0/utils/WOmxNode.cpp
similarity index 92%
copy from media/libstagefright/omx/hal/1.0/WOmxNode.cpp
copy to media/libstagefright/omx/hal/1.0/utils/WOmxNode.cpp
index 0e781d8..dc04b67 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxNode.cpp
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxNode.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include <IOMX.h>
 #include <OMXNodeInstance.h>
 #include "WOmxNode.h"
@@ -11,7 +27,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using ::android::hardware::Void;
 
@@ -50,7 +66,6 @@
 status_t LWOmxNode::setParameter(
         OMX_INDEXTYPE index, const void *params, size_t size) {
     hidl_vec<uint8_t> tParams = inHidlBytes(params, size);
-    tParams = inHidlBytes(params, size);
     return toStatusT(mBase->setParameter(
             toRawIndexType(index), tParams));
 }
@@ -102,7 +117,8 @@
             [&fnStatus, sidebandHandle](
                     Status status, hidl_handle const& outSidebandHandle) {
                 fnStatus = toStatusT(status);
-                *sidebandHandle = native_handle_clone(outSidebandHandle);
+                *sidebandHandle = outSidebandHandle == nullptr ?
+                        nullptr : native_handle_clone(outSidebandHandle);
             }));
     return transStatus == NO_ERROR ? fnStatus : transStatus;
 }
@@ -229,8 +245,8 @@
 }
 
 // TODO: this is temporary, will be removed when quirks move to OMX side.
-status_t LWOmxNode::setQuirks(OMX_U32 /* quirks */) {
-    return NO_ERROR;
+status_t LWOmxNode::setQuirks(OMX_U32 quirks) {
+    return toStatusT(mBase->setQuirks(static_cast<uint32_t>(quirks)));;
 }
 
 ::android::IBinder* LWOmxNode::onAsBinder() {
@@ -306,7 +322,7 @@
 Return<void> TWOmxNode::configureVideoTunnelMode(
         uint32_t portIndex, bool tunneled, uint32_t audioHwSync,
         configureVideoTunnelMode_cb _hidl_cb) {
-    native_handle_t* sidebandHandle;
+    native_handle_t* sidebandHandle = nullptr;
     Status status = toStatus(mBase->configureVideoTunnelMode(
             portIndex,
             toEnumBool(tunneled),
@@ -412,8 +428,12 @@
     return toStatus(mBase->dispatchMessage(lMsg));
 }
 
+Return<void> TWOmxNode::setQuirks(uint32_t quirks) {
+    mBase->setQuirks(static_cast<OMX_U32>(quirks));
+    return Void();
+}
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/WOmxNode.h b/media/libstagefright/omx/hal/1.0/utils/WOmxNode.h
similarity index 89%
copy from media/libstagefright/omx/hal/1.0/WOmxNode.h
copy to media/libstagefright/omx/hal/1.0/utils/WOmxNode.h
index 3a459d6..cb0b1a7 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxNode.h
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxNode.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXNODE_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXNODE_H
 
@@ -13,7 +29,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using ::android::hardware::media::omx::V1_0::CodecBuffer;
 using ::android::hardware::media::omx::V1_0::IOmxBufferSource;
@@ -137,9 +153,10 @@
             hidl_string const& parameterName,
             getExtensionIndex_cb _hidl_cb) override;
     Return<Status> dispatchMessage(Message const& msg) override;
+    Return<void> setQuirks(uint32_t quirks) override;
 };
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/WOmxObserver.cpp b/media/libstagefright/omx/hal/1.0/utils/WOmxObserver.cpp
similarity index 68%
copy from media/libstagefright/omx/hal/1.0/WOmxObserver.cpp
copy to media/libstagefright/omx/hal/1.0/utils/WOmxObserver.cpp
index f3ad8d3..4773572 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxObserver.cpp
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxObserver.cpp
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #include "WOmxObserver.h"
 
 #include <vector>
@@ -12,7 +28,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 // LWOmxObserver
 LWOmxObserver::LWOmxObserver(sp<IOmxObserver> const& base) : mBase(base) {
@@ -51,7 +67,7 @@
     return Return<void>();
 }
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/WOmxObserver.h b/media/libstagefright/omx/hal/1.0/utils/WOmxObserver.h
similarity index 72%
copy from media/libstagefright/omx/hal/1.0/WOmxObserver.h
copy to media/libstagefright/omx/hal/1.0/utils/WOmxObserver.h
index c8ab296..b1e2eb1 100644
--- a/media/libstagefright/omx/hal/1.0/WOmxObserver.h
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxObserver.h
@@ -1,3 +1,19 @@
+/*
+ * 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.
+ */
+
 #ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXOBSERVER_H
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXOBSERVER_H
 
@@ -13,7 +29,7 @@
 namespace media {
 namespace omx {
 namespace V1_0 {
-namespace implementation {
+namespace utils {
 
 using ::android::hardware::media::omx::V1_0::IOmxObserver;
 using ::android::hardware::media::omx::V1_0::Message;
@@ -52,7 +68,7 @@
     Return<void> onMessages(const hidl_vec<Message>& tMessages) override;
 };
 
-}  // namespace implementation
+}  // namespace utils
 }  // namespace V1_0
 }  // namespace omx
 }  // namespace media
diff --git a/media/libstagefright/omx/hal/1.0/utils/WOmxProducerListener.cpp b/media/libstagefright/omx/hal/1.0/utils/WOmxProducerListener.cpp
new file mode 100644
index 0000000..d43215d
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxProducerListener.cpp
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+#include "WOmxProducerListener.h"
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace utils {
+
+// TWOmxProducerListener
+TWOmxProducerListener::TWOmxProducerListener(
+        sp<IProducerListener> const& base):
+    mBase(base) {
+}
+
+Return<void> TWOmxProducerListener::onBufferReleased() {
+    mBase->onBufferReleased();
+    return Void();
+}
+
+Return<bool> TWOmxProducerListener::needsReleaseNotify() {
+    return mBase->needsReleaseNotify();
+}
+
+// LWOmxProducerListener
+LWOmxProducerListener::LWOmxProducerListener(
+        sp<IOmxProducerListener> const& base):
+    mBase(base) {
+}
+
+void LWOmxProducerListener::onBufferReleased() {
+    mBase->onBufferReleased();
+}
+
+bool LWOmxProducerListener::needsReleaseNotify() {
+    return static_cast<bool>(mBase->needsReleaseNotify());
+}
+
+::android::IBinder* LWOmxProducerListener::onAsBinder() {
+    return nullptr;
+}
+
+
+}  // namespace utils
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
diff --git a/media/libstagefright/omx/hal/1.0/utils/WOmxProducerListener.h b/media/libstagefright/omx/hal/1.0/utils/WOmxProducerListener.h
new file mode 100644
index 0000000..5b5e830
--- /dev/null
+++ b/media/libstagefright/omx/hal/1.0/utils/WOmxProducerListener.h
@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXPRODUCERLISTENER_H
+#define ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXPRODUCERLISTENER_H
+
+#include <android/hardware/media/omx/1.0/IOmxProducerListener.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+#include <binder/IBinder.h>
+#include <gui/IProducerListener.h>
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace omx {
+namespace V1_0 {
+namespace utils {
+
+using ::android::hardware::media::omx::V1_0::IOmxProducerListener;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+using ::android::IProducerListener;
+
+struct TWOmxProducerListener : public IOmxProducerListener {
+    sp<IProducerListener> mBase;
+    TWOmxProducerListener(sp<IProducerListener> const& base);
+    Return<void> onBufferReleased() override;
+    Return<bool> needsReleaseNotify() override;
+};
+
+class LWOmxProducerListener : public IProducerListener {
+public:
+    sp<IOmxProducerListener> mBase;
+    LWOmxProducerListener(sp<IOmxProducerListener> const& base);
+    void onBufferReleased() override;
+    bool needsReleaseNotify() override;
+protected:
+    ::android::IBinder* onAsBinder() override;
+};
+
+}  // namespace utils
+}  // namespace V1_0
+}  // namespace omx
+}  // namespace media
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_MEDIA_OMX_V1_0_WOMXPRODUCERLISTENER_H
diff --git a/media/libstagefright/omx/tests/Android.mk b/media/libstagefright/omx/tests/Android.mk
index ec14eb7..5e4ba10 100644
--- a/media/libstagefright/omx/tests/Android.mk
+++ b/media/libstagefright/omx/tests/Android.mk
@@ -9,7 +9,8 @@
 
 LOCAL_C_INCLUDES := \
 	$(TOP)/frameworks/av/media/libstagefright \
-	$(TOP)/frameworks/native/include/media/openmax
+	$(TOP)/frameworks/native/include/media/openmax \
+	$(TOP)/system/libhidl/base/include \
 
 LOCAL_CFLAGS += -Werror -Wall
 
diff --git a/media/ndk/NdkMediaDrm.cpp b/media/ndk/NdkMediaDrm.cpp
index cdce932..7a9240b 100644
--- a/media/ndk/NdkMediaDrm.cpp
+++ b/media/ndk/NdkMediaDrm.cpp
@@ -172,7 +172,8 @@
         return NULL;
     }
 
-    status_t err = drm->createPlugin(uuid);
+    String8 nullPackageName;
+    status_t err = drm->createPlugin(uuid, nullPackageName);
 
     if (err != OK) {
         return NULL;
diff --git a/radio/IRadio.cpp b/radio/IRadio.cpp
index 5bbe7cb..72f3b68 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 {
 
@@ -300,14 +301,9 @@
         case GET_PROGRAM_INFORMATION: {
             CHECK_INTERFACE(IRadio, data, reply);
             struct radio_program_info info;
-            status_t status;
+            RadioMetadataWrapper metadataWrapper(&info.metadata);
 
-            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));
@@ -319,7 +315,6 @@
                     reply->writeUint32(0);
                 }
             }
-            radio_metadata_deallocate(info.metadata);
             return NO_ERROR;
         }
         case HAS_CONTROL: {
diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index 2ce99e2..70929e4 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -1942,7 +1942,9 @@
 
 static void dumpInOutBuffer(
         char *dump, size_t dumpSize, bool isInput, EffectBufferHalInterface *buffer) {
-    if (buffer->externalData() != nullptr) {
+    if (buffer == nullptr) {
+        snprintf(dump, dumpSize, "%p", buffer);
+    } else if (buffer->externalData() != nullptr) {
         snprintf(dump, dumpSize, "%p -> %p",
                 isInput ? buffer->externalData() : buffer->audioBuffer()->raw,
                 isInput ? buffer->audioBuffer()->raw : buffer->externalData());
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
index 5445413..b169bac 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
@@ -57,7 +57,7 @@
     void clearPreemptedSessions();
     bool isActive() const;
     bool isSourceActive(audio_source_t source) const;
-    audio_source_t inputSource() const;
+    audio_source_t inputSource(bool activeOnly = false) const;
     bool isSoundTrigger() const;
     status_t addAudioSession(audio_session_t session,
                              const sp<AudioSession>& audioSession);
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
index 44f9637..2492ed6 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
@@ -63,11 +63,9 @@
     return mId;
 }
 
-audio_source_t AudioInputDescriptor::inputSource() const
+audio_source_t AudioInputDescriptor::inputSource(bool activeOnly) const
 {
-    // TODO: return highest priority input source
-    return mSessions.size() > 0 ? mSessions.valueAt(0)->inputSource() :
-                       AUDIO_SOURCE_DEFAULT;
+    return getHighestPrioritySource(activeOnly);
 }
 
 void AudioInputDescriptor::toAudioPortConfig(struct audio_port_config *dstConfig,
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index e71bb01..eb61ec4 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -1651,13 +1651,15 @@
             } else if (isSoundTrigger) {
                 break;
             }
+
             // force close input if current source is now the highest priority request on this input
             // and current input properties are not exactly as requested.
-            if ((desc->mSamplingRate != samplingRate ||
+            if (!isConcurrentSource(inputSource) && !isConcurrentSource(desc->inputSource()) &&
+                    ((desc->mSamplingRate != samplingRate ||
                     desc->mChannelMask != channelMask ||
                     !audio_formats_match(desc->mFormat, format)) &&
                     (source_priority(desc->getHighestPrioritySource(false /*activeOnly*/)) <
-                     source_priority(inputSource))) {
+                     source_priority(inputSource)))) {
                 ALOGV("%s: ", __FUNCTION__);
                 AudioSessionCollection sessions = desc->getAudioSessions(false /*activeOnly*/);
                 for (size_t j = 0; j < sessions.size(); j++) {
@@ -1715,6 +1717,14 @@
     return input;
 }
 
+//static
+bool AudioPolicyManager::isConcurrentSource(audio_source_t source)
+{
+    return (source == AUDIO_SOURCE_HOTWORD) ||
+            (source == AUDIO_SOURCE_VOICE_RECOGNITION) ||
+            (source == AUDIO_SOURCE_FM_TUNER);
+}
+
 bool AudioPolicyManager::isConcurentCaptureAllowed(const sp<AudioInputDescriptor>& inputDesc,
         const sp<AudioSession>& audioSession)
 {
@@ -1734,16 +1744,14 @@
     // 3) All other active captures are either for re-routing or HOTWORD
 
     if (is_virtual_input_device(inputDesc->mDevice) ||
-            audioSession->inputSource() == AUDIO_SOURCE_HOTWORD ||
-            audioSession->inputSource() == AUDIO_SOURCE_FM_TUNER) {
+            isConcurrentSource(audioSession->inputSource())) {
         return true;
     }
 
     Vector< sp<AudioInputDescriptor> > activeInputs = mInputs.getActiveInputs();
     for (size_t i = 0; i <  activeInputs.size(); i++) {
         sp<AudioInputDescriptor> activeInput = activeInputs[i];
-        if ((activeInput->inputSource() != AUDIO_SOURCE_HOTWORD) &&
-                (activeInput->inputSource() != AUDIO_SOURCE_FM_TUNER) &&
+        if (!isConcurrentSource(activeInput->inputSource(true)) &&
                 !is_virtual_input_device(activeInput->mDevice)) {
             return false;
         }
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 3c5ed3a..cea3f54 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -507,6 +507,8 @@
 
         void clearAudioSources(uid_t uid);
 
+        static bool isConcurrentSource(audio_source_t source);
+
         bool isConcurentCaptureAllowed(const sp<AudioInputDescriptor>& inputDesc,
                 const sp<AudioSession>& audioSession);
 
diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index 5b4d10d..9328d65 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -90,12 +90,6 @@
 
 LOCAL_CFLAGS += -Wall -Wextra -Werror
 
-ifeq ($(ENABLE_TREBLE), true)
-
-  LOCAL_CFLAGS += -DENABLE_TREBLE
-
-endif # ENABLE_TREBLE
-
 LOCAL_MODULE:= libcameraservice
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index f439590..f708654 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -18,12 +18,6 @@
 #define ATRACE_TAG ATRACE_TAG_CAMERA
 //#define LOG_NDEBUG 0
 
-#ifdef ENABLE_TREBLE
-  #define USE_HIDL true
-#else
-  #define USE_HIDL false
-#endif
-
 #include <algorithm>
 #include <climits>
 #include <stdio.h>
@@ -197,10 +191,13 @@
     notifier.noteResetFlashlight();
 
     status_t res = INVALID_OPERATION;
-    if (USE_HIDL) {
-        res = enumerateProviders();
-    } else {
+
+    bool disableTreble = property_get_bool("camera.disable_treble", false);
+    if (disableTreble) {
+        ALOGI("Treble disabled - using legacy path");
         res = loadLegacyHalModule();
+    } else {
+        res = enumerateProviders();
     }
     if (res == OK) {
         mInitialized = true;
diff --git a/services/mediaanalytics/MediaAnalyticsService.cpp b/services/mediaanalytics/MediaAnalyticsService.cpp
index eacafdd..35c1f5b 100644
--- a/services/mediaanalytics/MediaAnalyticsService.cpp
+++ b/services/mediaanalytics/MediaAnalyticsService.cpp
@@ -280,6 +280,7 @@
     nsecs_t ts_since = 0;
     String16 clearOption("-clear");
     String16 sinceOption("-since");
+    String16 helpOption("-help");
     int n = args.size();
     for (int i = 0; i < n; i++) {
         String8 myarg(args[i]);
@@ -298,6 +299,16 @@
             } else {
                 ts_since = 0;
             }
+            // command line is milliseconds; internal units are nano-seconds
+            ts_since *= 1000*1000;
+        } else if (args[i] == helpOption) {
+            result.append("Recognized parameters:\n");
+            result.append("-help        this help message\n");
+            result.append("-clear       clears out saved records\n");
+            result.append("-since XXX   include records since XXX\n");
+            result.append("             (XXX is milliseconds since the UNIX epoch)\n");
+            write(fd, result.string(), result.size());
+            return NO_ERROR;
         }
     }
 
@@ -364,8 +375,6 @@
 }
 
 String8 MediaAnalyticsService::dumpQueue(List<MediaAnalyticsItem *> *theList, nsecs_t ts_since) {
-    const size_t SIZE = 512;
-    char buffer[SIZE];
     String8 result;
     int slot = 0;
 
@@ -379,12 +388,7 @@
                 continue;
             }
             AString entry = (*it)->toString();
-            snprintf(buffer, sizeof(buffer), "%4d: %s",
-                        slot, entry.c_str());
-            result.append(buffer);
-            buffer[0] = '\n';
-            buffer[1] = '\0';
-            result.append(buffer);
+            result.appendFormat("%5d: %s\n", slot, entry.c_str());
             slot++;
         }
     }
diff --git a/services/mediacodec/minijail/seccomp_policy/mediacodec-seccomp-arm.policy b/services/mediacodec/minijail/seccomp_policy/mediacodec-seccomp-arm.policy
index 9a0894d..b7603bc 100644
--- a/services/mediacodec/minijail/seccomp_policy/mediacodec-seccomp-arm.policy
+++ b/services/mediacodec/minijail/seccomp_policy/mediacodec-seccomp-arm.policy
@@ -43,6 +43,7 @@
 sched_yield: 1
 nanosleep: 1
 lseek: 1
+_llseek: 1
 sched_get_priority_max: 1
 sched_get_priority_min: 1
 statfs64: 1
diff --git a/services/mediadrm/Android.mk b/services/mediadrm/Android.mk
index 73109e1..12b9d76 100644
--- a/services/mediadrm/Android.mk
+++ b/services/mediadrm/Android.mk
@@ -16,7 +16,6 @@
 
 include $(CLEAR_VARS)
 
-
 LOCAL_SRC_FILES:= \
     MediaDrmService.cpp \
     main_mediadrmserver.cpp
@@ -26,8 +25,19 @@
     liblog \
     libmediadrm \
     libutils \
+    libandroidfw
+ifeq ($(ENABLE_TREBLE), true)
+LOCAL_SHARED_LIBRARIES += \
+    libhidlbase \
+    libhidlmemory \
+    android.hidl.base@1.0 \
+    android.hardware.drm@1.0
+endif
 
 LOCAL_CFLAGS += -Wall -Wextra -Werror
+ifeq ($(ENABLE_TREBLE), true)
+LOCAL_CFLAGS += -DENABLE_TREBLE=1
+endif
 
 LOCAL_MODULE:= mediadrmserver
 LOCAL_32_BIT_ONLY := true
diff --git a/services/mediadrm/MediaDrmService.cpp b/services/mediadrm/MediaDrmService.cpp
index 331c568..e579dd8 100644
--- a/services/mediadrm/MediaDrmService.cpp
+++ b/services/mediadrm/MediaDrmService.cpp
@@ -21,11 +21,16 @@
 #define LOG_TAG "MediaDrmService"
 
 #include "MediaDrmService.h"
-
 #include <binder/IServiceManager.h>
+#include <utils/Log.h>
+
+#ifdef ENABLE_TREBLE
+#include <media/CryptoHal.h>
+#include <media/DrmHal.h>
+#else
 #include <media/Crypto.h>
 #include <media/Drm.h>
-#include <utils/Log.h>
+#endif
 
 namespace android {
 
@@ -35,11 +40,19 @@
 }
 
 sp<ICrypto> MediaDrmService::makeCrypto() {
+#ifdef ENABLE_TREBLE
+    return new CryptoHal;
+#else
     return new Crypto;
+#endif
 }
 
 sp<IDrm> MediaDrmService::makeDrm() {
+#ifdef ENABLE_TREBLE
+    return new DrmHal;
+#else
     return new Drm;
+#endif
 }
 
 } // namespace android
diff --git a/services/oboeservice/Android.mk b/services/oboeservice/Android.mk
index 07b4d76..5a79b80 100644
--- a/services/oboeservice/Android.mk
+++ b/services/oboeservice/Android.mk
@@ -42,7 +42,9 @@
     OboeAudioService.cpp \
     OboeServiceStreamBase.cpp \
     OboeServiceStreamFakeHal.cpp \
-    OboeServiceMain.cpp
+    TimestampScheduler.cpp \
+    OboeServiceMain.cpp \
+    OboeThread.cpp
 
 LOCAL_CFLAGS += -Wno-unused-parameter
 LOCAL_CFLAGS += -Wall -Werror
diff --git a/services/oboeservice/OboeAudioService.cpp b/services/oboeservice/OboeAudioService.cpp
index caddc1d..001569c 100644
--- a/services/oboeservice/OboeAudioService.cpp
+++ b/services/oboeservice/OboeAudioService.cpp
@@ -34,11 +34,20 @@
 
 typedef enum
 {
+    OBOE_HANDLE_TYPE_DUMMY1, // TODO remove DUMMYs
+    OBOE_HANDLE_TYPE_DUMMY2, // make server handles different than client
     OBOE_HANDLE_TYPE_STREAM,
     OBOE_HANDLE_TYPE_COUNT
 } oboe_service_handle_type_t;
 static_assert(OBOE_HANDLE_TYPE_COUNT <= HANDLE_TRACKER_MAX_TYPES, "Too many handle types.");
 
+android::OboeAudioService::OboeAudioService()
+    : BnOboeAudioService() {
+}
+
+OboeAudioService::~OboeAudioService() {
+}
+
 oboe_handle_t OboeAudioService::openStream(oboe::OboeStreamRequest &request,
                                                 oboe::OboeStreamConfiguration &configuration) {
     OboeServiceStreamBase *serviceStream =  new OboeServiceStreamFakeHal();
@@ -61,7 +70,7 @@
     OboeServiceStreamBase *serviceStream = (OboeServiceStreamBase *)
             mHandleTracker.remove(OBOE_HANDLE_TYPE_STREAM,
                                   streamHandle);
-    ALOGI("OboeAudioService.closeStream(0x%08X)", streamHandle);
+    ALOGD("OboeAudioService.closeStream(0x%08X)", streamHandle);
     if (serviceStream != nullptr) {
         ALOGD("OboeAudioService::closeStream(): deleting serviceStream = %p", serviceStream);
         delete serviceStream;
@@ -79,9 +88,8 @@
 oboe_result_t OboeAudioService::getStreamDescription(
                 oboe_handle_t streamHandle,
                 oboe::AudioEndpointParcelable &parcelable) {
-    ALOGI("OboeAudioService::getStreamDescriptor(), streamHandle = 0x%08x", streamHandle);
     OboeServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
-    ALOGI("OboeAudioService::getStreamDescriptor(), serviceStream = %p", serviceStream);
+    ALOGD("OboeAudioService::getStreamDescription(), serviceStream = %p", serviceStream);
     if (serviceStream == nullptr) {
         return OBOE_ERROR_INVALID_HANDLE;
     }
@@ -90,45 +98,38 @@
 
 oboe_result_t OboeAudioService::startStream(oboe_handle_t streamHandle) {
     OboeServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
-    ALOGI("OboeAudioService::startStream(), serviceStream = %p", serviceStream);
+    ALOGD("OboeAudioService::startStream(), serviceStream = %p", serviceStream);
     if (serviceStream == nullptr) {
         return OBOE_ERROR_INVALID_HANDLE;
     }
-    mLatestHandle = streamHandle;
-    return serviceStream->start();
+    oboe_result_t result = serviceStream->start();
+    return result;
 }
 
 oboe_result_t OboeAudioService::pauseStream(oboe_handle_t streamHandle) {
     OboeServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
-    ALOGI("OboeAudioService::pauseStream(), serviceStream = %p", serviceStream);
+    ALOGD("OboeAudioService::pauseStream(), serviceStream = %p", serviceStream);
     if (serviceStream == nullptr) {
         return OBOE_ERROR_INVALID_HANDLE;
     }
-    return serviceStream->pause();
+    oboe_result_t result = serviceStream->pause();
+    return result;
 }
 
 oboe_result_t OboeAudioService::flushStream(oboe_handle_t streamHandle) {
     OboeServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
-    ALOGI("OboeAudioService::flushStream(), serviceStream = %p", serviceStream);
+    ALOGD("OboeAudioService::flushStream(), serviceStream = %p", serviceStream);
     if (serviceStream == nullptr) {
         return OBOE_ERROR_INVALID_HANDLE;
     }
     return serviceStream->flush();
 }
 
-void OboeAudioService::tickle() {
-    OboeServiceStreamBase *serviceStream = convertHandleToServiceStream(mLatestHandle);
-    //ALOGI("OboeAudioService::tickle(), serviceStream = %p", serviceStream);
-    if (serviceStream != nullptr) {
-        serviceStream->tickle();
-    }
-}
-
 oboe_result_t OboeAudioService::registerAudioThread(oboe_handle_t streamHandle,
                                                          pid_t clientThreadId,
                                                          oboe_nanoseconds_t periodNanoseconds) {
     OboeServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
-    ALOGI("OboeAudioService::registerAudioThread(), serviceStream = %p", serviceStream);
+    ALOGD("OboeAudioService::registerAudioThread(), serviceStream = %p", serviceStream);
     if (serviceStream == nullptr) {
         ALOGE("OboeAudioService::registerAudioThread(), serviceStream == nullptr");
         return OBOE_ERROR_INVALID_HANDLE;
diff --git a/services/oboeservice/OboeAudioService.h b/services/oboeservice/OboeAudioService.h
index df3cbf8..b196f1d 100644
--- a/services/oboeservice/OboeAudioService.h
+++ b/services/oboeservice/OboeAudioService.h
@@ -24,31 +24,32 @@
 
 #include <oboe/OboeDefinitions.h>
 #include <oboe/OboeAudio.h>
-#include "HandleTracker.h"
+#include "utility/HandleTracker.h"
 #include "IOboeAudioService.h"
-#include "OboeService.h"
 #include "OboeServiceStreamBase.h"
 
-using namespace android;
-namespace oboe {
+namespace android {
 
 class OboeAudioService :
     public BinderService<OboeAudioService>,
     public BnOboeAudioService
 {
-    friend class BinderService<OboeAudioService>;   // for OboeAudioService()
+    friend class BinderService<OboeAudioService>;
+
 public:
-// TODO why does this fail?    static const char* getServiceName() ANDROID_API { return "media.audio_oboe"; }
+    OboeAudioService();
+    virtual ~OboeAudioService();
+
     static const char* getServiceName() { return "media.audio_oboe"; }
 
-    virtual oboe_handle_t openStream(OboeStreamRequest &request,
-                                     OboeStreamConfiguration &configuration);
+    virtual oboe_handle_t openStream(oboe::OboeStreamRequest &request,
+                                     oboe::OboeStreamConfiguration &configuration);
 
     virtual oboe_result_t closeStream(oboe_handle_t streamHandle);
 
     virtual oboe_result_t getStreamDescription(
                 oboe_handle_t streamHandle,
-                AudioEndpointParcelable &parcelable);
+                oboe::AudioEndpointParcelable &parcelable);
 
     virtual oboe_result_t startStream(oboe_handle_t streamHandle);
 
@@ -61,16 +62,14 @@
 
     virtual oboe_result_t unregisterAudioThread(oboe_handle_t streamHandle, pid_t pid);
 
-    virtual void tickle();
-
 private:
 
-    OboeServiceStreamBase *convertHandleToServiceStream(oboe_handle_t streamHandle) const;
+    oboe::OboeServiceStreamBase *convertHandleToServiceStream(oboe_handle_t streamHandle) const;
 
     HandleTracker mHandleTracker;
-    oboe_handle_t mLatestHandle = OBOE_ERROR_INVALID_HANDLE; // TODO until we have service threads
+
 };
 
-} /* namespace oboe */
+} /* namespace android */
 
 #endif //OBOE_OBOE_AUDIO_SERVICE_H
diff --git a/services/oboeservice/OboeServiceStreamBase.cpp b/services/oboeservice/OboeServiceStreamBase.cpp
index 6b7e4e5..15b70a5 100644
--- a/services/oboeservice/OboeServiceStreamBase.cpp
+++ b/services/oboeservice/OboeServiceStreamBase.cpp
@@ -40,12 +40,15 @@
 }
 
 OboeServiceStreamBase::~OboeServiceStreamBase() {
+    Mutex::Autolock _l(mLockUpMessageQueue);
     delete mUpMessageQueue;
 }
 
 void OboeServiceStreamBase::sendServiceEvent(oboe_service_event_t event,
                               int32_t data1,
                               int64_t data2) {
+
+    Mutex::Autolock _l(mLockUpMessageQueue);
     OboeServiceMessage command;
     command.what = OboeServiceMessage::code::EVENT;
     command.event.event = event;
diff --git a/services/oboeservice/OboeServiceStreamBase.h b/services/oboeservice/OboeServiceStreamBase.h
index 736c754..33857c6 100644
--- a/services/oboeservice/OboeServiceStreamBase.h
+++ b/services/oboeservice/OboeServiceStreamBase.h
@@ -17,12 +17,14 @@
 #ifndef OBOE_OBOE_SERVICE_STREAM_BASE_H
 #define OBOE_OBOE_SERVICE_STREAM_BASE_H
 
+#include <utils/Mutex.h>
+
 #include "IOboeAudioService.h"
 #include "OboeService.h"
-#include "AudioStream.h"
 #include "fifo/FifoBuffer.h"
 #include "SharedRingBuffer.h"
 #include "AudioEndpointParcelable.h"
+#include "OboeThread.h"
 
 namespace oboe {
 
@@ -30,7 +32,7 @@
 // This should be way more than we need.
 #define QUEUE_UP_CAPACITY_COMMANDS (128)
 
-class OboeServiceStreamBase  {
+class OboeServiceStreamBase {
 
 public:
     OboeServiceStreamBase();
@@ -68,7 +70,11 @@
 
     virtual oboe_result_t close() = 0;
 
-    virtual void tickle() = 0;
+    virtual void sendCurrentTimestamp() = 0;
+
+    oboe_size_frames_t getFramesPerBurst() {
+        return mFramesPerBurst;
+    }
 
     virtual void sendServiceEvent(oboe_service_event_t event,
                                   int32_t data1 = 0,
@@ -77,6 +83,7 @@
     virtual void setRegisteredThread(pid_t pid) {
         mRegisteredClientThread = pid;
     }
+
     virtual pid_t getRegisteredThread() {
         return mRegisteredClientThread;
     }
@@ -92,6 +99,8 @@
     oboe_size_frames_t       mFramesPerBurst = 0;
     oboe_size_frames_t       mCapacityInFrames = 0;
     oboe_size_bytes_t        mCapacityInBytes = 0;
+
+    android::Mutex           mLockUpMessageQueue;
 };
 
 } /* namespace oboe */
diff --git a/services/oboeservice/OboeServiceStreamFakeHal.cpp b/services/oboeservice/OboeServiceStreamFakeHal.cpp
index dbbc860..da4099d 100644
--- a/services/oboeservice/OboeServiceStreamFakeHal.cpp
+++ b/services/oboeservice/OboeServiceStreamFakeHal.cpp
@@ -18,6 +18,8 @@
 //#define LOG_NDEBUG 0
 #include <utils/Log.h>
 
+#include <atomic>
+
 #include "AudioClock.h"
 #include "AudioEndpointParcelable.h"
 
@@ -41,6 +43,7 @@
         : OboeServiceStreamBase()
         , mStreamId(nullptr)
         , mPreviousFrameCounter(0)
+        , mOboeThread()
 {
 }
 
@@ -86,7 +89,8 @@
     // Fill in OboeStreamConfiguration
     configuration.setSampleRate(mSampleRate);
     configuration.setSamplesPerFrame(mmapInfo.channel_count);
-    configuration.setAudioFormat(OBOE_AUDIO_FORMAT_PCM16);
+    configuration.setAudioFormat(OBOE_AUDIO_FORMAT_PCM_I16);
+
     return OBOE_OK;
 }
 
@@ -117,6 +121,10 @@
     oboe_result_t result = fake_hal_start(mStreamId);
     sendServiceEvent(OBOE_SERVICE_EVENT_STARTED);
     mState = OBOE_STREAM_STATE_STARTED;
+    if (result == OBOE_OK) {
+        mThreadEnabled.store(true);
+        result = mOboeThread.start(this);
+    }
     return result;
 }
 
@@ -131,6 +139,8 @@
     mState = OBOE_STREAM_STATE_PAUSED;
     mFramesRead.reset32();
     ALOGD("OboeServiceStreamFakeHal::pause() sent OBOE_SERVICE_EVENT_PAUSED");
+    mThreadEnabled.store(false);
+    result = mOboeThread.stop();
     return result;
 }
 
@@ -166,7 +176,7 @@
         command.what = OboeServiceMessage::code::TIMESTAMP;
         mFramesRead.update32(frameCounter);
         command.timestamp.position = mFramesRead.get();
-        ALOGV("OboeServiceStreamFakeHal::sendCurrentTimestamp() HAL frames = %d, pos = %d",
+        ALOGD("OboeServiceStreamFakeHal::sendCurrentTimestamp() HAL frames = %d, pos = %d",
                 frameCounter, (int)mFramesRead.get());
         command.timestamp.timestamp = AudioClock::getNanoseconds();
         mUpMessageQueue->getFifoBuffer()->write(&command, 1);
@@ -174,17 +184,18 @@
     }
 }
 
-void OboeServiceStreamFakeHal::tickle() {
-    if (mStreamId != nullptr) {
-        switch (mState) {
-            case OBOE_STREAM_STATE_STARTING:
-            case OBOE_STREAM_STATE_STARTED:
-            case OBOE_STREAM_STATE_PAUSING:
-            case OBOE_STREAM_STATE_STOPPING:
-                sendCurrentTimestamp();
-                break;
-            default:
-                break;
+// implement Runnable
+void OboeServiceStreamFakeHal::run() {
+    TimestampScheduler timestampScheduler;
+    timestampScheduler.setBurstPeriod(mFramesPerBurst, mSampleRate);
+    timestampScheduler.start(AudioClock::getNanoseconds());
+    while(mThreadEnabled.load()) {
+        oboe_nanoseconds_t nextTime = timestampScheduler.nextAbsoluteTime();
+        if (AudioClock::getNanoseconds() >= nextTime) {
+            sendCurrentTimestamp();
+        } else  {
+            // Sleep until it is time to send the next timestamp.
+            AudioClock::sleepUntilNanoTime(nextTime);
         }
     }
 }
diff --git a/services/oboeservice/OboeServiceStreamFakeHal.h b/services/oboeservice/OboeServiceStreamFakeHal.h
index b026d34..39b952a 100644
--- a/services/oboeservice/OboeServiceStreamFakeHal.h
+++ b/services/oboeservice/OboeServiceStreamFakeHal.h
@@ -22,10 +22,13 @@
 #include "FakeAudioHal.h"
 #include "MonotonicCounter.h"
 #include "AudioEndpointParcelable.h"
+#include "TimestampScheduler.h"
 
 namespace oboe {
 
-class OboeServiceStreamFakeHal : public OboeServiceStreamBase {
+class OboeServiceStreamFakeHal
+    : public OboeServiceStreamBase
+    , public Runnable {
 
 public:
     OboeServiceStreamFakeHal();
@@ -53,12 +56,10 @@
 
     virtual oboe_result_t close() override;
 
-    virtual void tickle() override;
-
-protected:
-
     void sendCurrentTimestamp();
 
+    virtual void run() override; // to implement Runnable
+
 private:
     fake_hal_stream_ptr    mStreamId; // Move to HAL
 
@@ -68,6 +69,9 @@
     int                    mPreviousFrameCounter = 0;   // from HAL
 
     oboe_stream_state_t    mState = OBOE_STREAM_STATE_UNINITIALIZED;
+
+    OboeThread             mOboeThread;
+    std::atomic<bool>      mThreadEnabled;
 };
 
 } // namespace oboe
diff --git a/services/oboeservice/OboeThread.cpp b/services/oboeservice/OboeThread.cpp
new file mode 100644
index 0000000..9ecfa90
--- /dev/null
+++ b/services/oboeservice/OboeThread.cpp
@@ -0,0 +1,76 @@
+/*
+ * 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 "OboeService"
+//#define LOG_NDEBUG 0
+#include <utils/Log.h>
+
+#include <pthread.h>
+
+#include <oboe/OboeDefinitions.h>
+
+#include "OboeThread.h"
+
+using namespace oboe;
+
+
+OboeThread::OboeThread() {
+    // mThread is a pthread_t of unknown size so we need memset.
+    memset(&mThread, 0, sizeof(mThread));
+}
+
+void OboeThread::dispatch() {
+    if (mRunnable != nullptr) {
+        mRunnable->run();
+    } else {
+        run();
+    }
+}
+
+// This is the entry point for the new thread created by createThread().
+// It converts the 'C' function call to a C++ method call.
+static void * OboeThread_internalThreadProc(void *arg) {
+    OboeThread *oboeThread = (OboeThread *) arg;
+    oboeThread->dispatch();
+    return nullptr;
+}
+
+oboe_result_t OboeThread::start(Runnable *runnable) {
+    if (mHasThread) {
+        return OBOE_ERROR_INVALID_STATE;
+    }
+    mRunnable = runnable; // TODO use atomic?
+    int err = pthread_create(&mThread, nullptr, OboeThread_internalThreadProc, this);
+    if (err != 0) {
+        ALOGE("OboeThread::pthread_create() returned %d", err);
+        // TODO convert errno to oboe_result_t
+        return OBOE_ERROR_INTERNAL;
+    } else {
+        mHasThread = true;
+        return OBOE_OK;
+    }
+}
+
+oboe_result_t OboeThread::stop() {
+    if (!mHasThread) {
+        return OBOE_ERROR_INVALID_STATE;
+    }
+    int err = pthread_join(mThread, nullptr);
+    mHasThread = false;
+    // TODO convert errno to oboe_result_t
+    return err ? OBOE_ERROR_INTERNAL : OBOE_OK;
+}
+
diff --git a/services/oboeservice/OboeThread.h b/services/oboeservice/OboeThread.h
new file mode 100644
index 0000000..48fafc7
--- /dev/null
+++ b/services/oboeservice/OboeThread.h
@@ -0,0 +1,73 @@
+/*
+ * 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 OBOE_THREAD_H
+#define OBOE_THREAD_H
+
+#include <atomic>
+#include <pthread.h>
+
+#include <oboe/OboeDefinitions.h>
+
+namespace oboe {
+
+class Runnable {
+public:
+    Runnable() {};
+    virtual ~Runnable() = default;
+
+    virtual void run() {}
+};
+
+/**
+ * Abstraction for a host thread.
+ */
+class OboeThread
+{
+public:
+    OboeThread();
+    OboeThread(Runnable *runnable);
+    virtual ~OboeThread() = default;
+
+    /**
+     * Start the thread running.
+     */
+    oboe_result_t start(Runnable *runnable = nullptr);
+
+    /**
+     * Join the thread.
+     * The caller must somehow tell the thread to exit before calling join().
+     */
+    oboe_result_t stop();
+
+    /**
+     * This will get called in the thread.
+     * Override this or pass a Runnable to start().
+     */
+    virtual void run() {};
+
+    void dispatch(); // called internally from 'C' thread wrapper
+
+private:
+    Runnable*                mRunnable = nullptr; // TODO make atomic with memory barrier?
+    bool                     mHasThread = false;
+    pthread_t                mThread; // initialized in constructor
+
+};
+
+} /* namespace oboe */
+
+#endif ///OBOE_THREAD_H
diff --git a/services/oboeservice/TimestampScheduler.cpp b/services/oboeservice/TimestampScheduler.cpp
new file mode 100644
index 0000000..17d6c63
--- /dev/null
+++ b/services/oboeservice/TimestampScheduler.cpp
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+
+// for random()
+#include <stdlib.h>
+
+#include "TimestampScheduler.h"
+
+using namespace oboe;
+
+void TimestampScheduler::start(oboe_nanoseconds_t startTime) {
+    mStartTime = startTime;
+    mLastTime = startTime;
+}
+
+oboe_nanoseconds_t TimestampScheduler::nextAbsoluteTime() {
+    int64_t periodsElapsed = (mLastTime - mStartTime) / mBurstPeriod;
+    // This is an arbitrary schedule that could probably be improved.
+    // It starts out sending a timestamp on every period because we want to
+    // get an accurate picture when the stream starts. Then it slows down
+    // to the occasional timestamps needed to detect a slow drift.
+    int64_t minPeriodsToDelay = (periodsElapsed < 10) ? 1 :
+        (periodsElapsed < 100) ? 3 :
+        (periodsElapsed < 1000) ? 10 : 50;
+    oboe_nanoseconds_t sleepTime = minPeriodsToDelay * mBurstPeriod;
+    // Generate a random rectangular distribution one burst wide so that we get
+    // an uncorrelated sampling of the MMAP pointer.
+    sleepTime += (oboe_nanoseconds_t)(random() * mBurstPeriod / RAND_MAX);
+    mLastTime += sleepTime;
+    return mLastTime;
+}
diff --git a/services/oboeservice/TimestampScheduler.h b/services/oboeservice/TimestampScheduler.h
new file mode 100644
index 0000000..041e432
--- /dev/null
+++ b/services/oboeservice/TimestampScheduler.h
@@ -0,0 +1,76 @@
+/*
+ * 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 OBOE_TIMESTAMP_SCHEDULER_H
+#define OBOE_TIMESTAMP_SCHEDULER_H
+
+//#include <stdlib.h> // random()
+
+#include "IOboeAudioService.h"
+#include "OboeService.h"
+#include "AudioStream.h"
+#include "fifo/FifoBuffer.h"
+#include "SharedRingBuffer.h"
+#include "AudioEndpointParcelable.h"
+
+namespace oboe {
+
+/**
+ * Schedule wakeup time for monitoring the position
+ * of an MMAP/NOIRQ buffer.
+ *
+ * Note that this object is not thread safe. Only call it from a single thread.
+ */
+class TimestampScheduler
+{
+public:
+    TimestampScheduler() {};
+    virtual ~TimestampScheduler() = default;
+
+    /**
+     * Start the schedule at the given time.
+     */
+    void start(oboe_nanoseconds_t startTime);
+
+    /**
+     * Calculate the next time that the read position should be
+     * measured.
+     */
+    oboe_nanoseconds_t nextAbsoluteTime();
+
+    void setBurstPeriod(oboe_nanoseconds_t burstPeriod) {
+        mBurstPeriod = burstPeriod;
+    }
+
+    void setBurstPeriod(oboe_size_frames_t framesPerBurst,
+                        oboe_sample_rate_t sampleRate) {
+        mBurstPeriod = OBOE_NANOS_PER_SECOND * framesPerBurst / sampleRate;
+    }
+
+    oboe_nanoseconds_t getBurstPeriod() {
+        return mBurstPeriod;
+    }
+
+private:
+    // Start with an arbitrary default so we do not divide by zero.
+    oboe_nanoseconds_t mBurstPeriod = OBOE_NANOS_PER_MILLISECOND;
+    oboe_nanoseconds_t mStartTime;
+    oboe_nanoseconds_t mLastTime;
+};
+
+} /* namespace oboe */
+
+#endif /* OBOE_TIMESTAMP_SCHEDULER_H */