diff --git a/camera/cameraserver/Android.mk b/camera/cameraserver/Android.mk
index 8c06833..bdafff1 100644
--- a/camera/cameraserver/Android.mk
+++ b/camera/cameraserver/Android.mk
@@ -24,7 +24,11 @@
 	liblog \
 	libutils \
 	libbinder \
-	android.hardware.camera.common@1.0
+	android.hardware.camera.common@1.0 \
+	android.hardware.camera.provider@2.4 \
+	android.hardware.camera.device@1.0 \
+	android.hardware.camera.device@3.2 \
+	android.hidl.manager@1.0
 
 LOCAL_MODULE:= cameraserver
 LOCAL_32_BIT_ONLY := true
diff --git a/camera/ndk/Android.bp b/camera/ndk/Android.bp
index 6f2351f..c5fc646 100644
--- a/camera/ndk/Android.bp
+++ b/camera/ndk/Android.bp
@@ -20,4 +20,5 @@
     name: "libcamera2ndk.ndk",
     symbol_file: "libcamera2ndk.map.txt",
     first_version: "24",
+    unversioned_until: "current",
 }
diff --git a/include/media/audiohal/StreamHalInterface.h b/include/media/audiohal/StreamHalInterface.h
index 5296829..7419c34 100644
--- a/include/media/audiohal/StreamHalInterface.h
+++ b/include/media/audiohal/StreamHalInterface.h
@@ -75,6 +75,10 @@
     // Get current read/write position in the mmap buffer
     virtual status_t getMmapPosition(struct audio_mmap_position *position) = 0;
 
+    // Set the priority of the thread that interacts with the HAL
+    // (must match the priority of the audioflinger's thread that calls 'read' / 'write')
+    virtual status_t setHalThreadPriority(int priority) = 0;
+
   protected:
     // Subclasses can not be constructed directly by clients.
     StreamHalInterface() {}
diff --git a/include/media/nbaio/NBLog.h b/include/media/nbaio/NBLog.h
index 1297b51..acf2d31 100644
--- a/include/media/nbaio/NBLog.h
+++ b/include/media/nbaio/NBLog.h
@@ -21,7 +21,7 @@
 
 #include <binder/IMemory.h>
 #include <utils/Mutex.h>
-#include <audio_utils/roundup.h>
+#include <audio_utils/fifo.h>
 
 namespace android {
 
@@ -55,8 +55,11 @@
 private:
     friend class Writer;
     Event       mEvent;     // event type
-    size_t      mLength;    // length of additional data, 0 <= mLength <= 255
+    uint8_t     mLength;    // length of additional data, 0 <= mLength <= kMaxLength
     const void *mData;      // event type-specific data
+    static const size_t kMaxLength = 255;
+public:
+    static const size_t kOverhead = 3;  // mEvent, mLength, mData[...], duplicate mLength
 };
 
 // representation of a single log entry in shared memory
@@ -70,13 +73,17 @@
 //  byte[2+mLength]     duplicate copy of mLength to permit reverse scan
 //  byte[3+mLength]     start of next log entry
 
-// located in shared memory
+public:
+
+// Located in shared memory, must be POD.
+// Exactly one process must explicitly call the constructor or use placement new.
+// Since this is a POD, the destructor is empty and unnecessary to call it explicitly.
 struct Shared {
-    Shared() : mRear(0) { }
+    Shared() /* mRear initialized via default constructor */ { }
     /*virtual*/ ~Shared() { }
 
-    volatile int32_t mRear;     // index one byte past the end of most recent Entry
-    char    mBuffer[0];         // circular buffer for entries
+    audio_utils_fifo_index  mRear;  // index one byte past the end of most recent Entry
+    char    mBuffer[0];             // circular buffer for entries
 };
 
 public:
@@ -117,10 +124,10 @@
 
     // Input parameter 'size' is the desired size of the timeline in byte units.
     // The size of the shared memory must be at least Timeline::sharedSize(size).
-    Writer(size_t size, void *shared);
-    Writer(size_t size, const sp<IMemory>& iMemory);
+    Writer(void *shared, size_t size);
+    Writer(const sp<IMemory>& iMemory, size_t size);
 
-    virtual ~Writer() { }
+    virtual ~Writer();
 
     virtual void    log(const char *string);
     virtual void    logf(const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
@@ -138,13 +145,16 @@
     sp<IMemory>     getIMemory() const  { return mIMemory; }
 
 private:
+    // 0 <= length <= kMaxLength
     void    log(Event event, const void *data, size_t length);
     void    log(const Entry *entry, bool trusted = false);
 
-    const size_t    mSize;      // circular buffer size in bytes, must be a power of 2
     Shared* const   mShared;    // raw pointer to shared memory
-    const sp<IMemory> mIMemory; // ref-counted version
-    int32_t         mRear;      // my private copy of mShared->mRear
+    sp<IMemory>     mIMemory;   // ref-counted version, initialized in constructor and then const
+    audio_utils_fifo * const mFifo;                 // FIFO itself,
+                                                    // non-NULL unless constructor fails
+    audio_utils_fifo_writer * const mFifoWriter;    // used to write to FIFO,
+                                                    // non-NULL unless dummy constructor used
     bool            mEnabled;   // whether to actually log
 };
 
@@ -154,7 +164,7 @@
 class LockedWriter : public Writer {
 public:
     LockedWriter();
-    LockedWriter(size_t size, void *shared);
+    LockedWriter(void *shared, size_t size);
 
     virtual void    log(const char *string);
     virtual void    logf(const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
@@ -176,21 +186,24 @@
 
     // Input parameter 'size' is the desired size of the timeline in byte units.
     // The size of the shared memory must be at least Timeline::sharedSize(size).
-    Reader(size_t size, const void *shared);
-    Reader(size_t size, const sp<IMemory>& iMemory);
+    Reader(const void *shared, size_t size);
+    Reader(const sp<IMemory>& iMemory, size_t size);
 
-    virtual ~Reader() { }
+    virtual ~Reader();
 
     void    dump(int fd, size_t indent = 0);
     bool    isIMemory(const sp<IMemory>& iMemory) const;
 
 private:
-    const size_t    mSize;      // circular buffer size in bytes, must be a power of 2
-    const Shared* const mShared; // raw pointer to shared memory
-    const sp<IMemory> mIMemory; // ref-counted version
-    int32_t     mFront;         // index of oldest acknowledged Entry
+    /*const*/ Shared* const mShared;    // raw pointer to shared memory, actually const but not
+                                        // declared as const because audio_utils_fifo() constructor
+    sp<IMemory> mIMemory;       // ref-counted version, assigned only in constructor
     int     mFd;                // file descriptor
     int     mIndent;            // indentation level
+    audio_utils_fifo * const mFifo;                 // FIFO itself,
+                                                    // non-NULL unless constructor fails
+    audio_utils_fifo_reader * const mFifoReader;    // used to read from FIFO,
+                                                    // non-NULL unless constructor fails
 
     void    dumpLine(const String8& timestamp, String8& body);
 
diff --git a/media/libaudioclient/Android.bp b/media/libaudioclient/Android.bp
new file mode 100644
index 0000000..03dce0c
--- /dev/null
+++ b/media/libaudioclient/Android.bp
@@ -0,0 +1,45 @@
+cc_library_shared {
+    name: "libaudioclient",
+    srcs: [
+        "AudioEffect.cpp",
+        "AudioPolicy.cpp",
+        "AudioRecord.cpp",
+        "AudioSystem.cpp",
+        "AudioTrack.cpp",
+        "AudioTrackShared.cpp",
+        "IAudioFlinger.cpp",
+        "IAudioFlingerClient.cpp",
+        "IAudioPolicyService.cpp",
+        "IAudioPolicyServiceClient.cpp",
+        "IAudioRecord.cpp",
+        "IAudioTrack.cpp",
+        "IEffect.cpp",
+        "IEffectClient.cpp",
+        "ToneGenerator.cpp",
+    ],
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libutils",
+        "libbinder",
+        "libdl",
+        "libaudioutils",
+    ],
+    export_shared_lib_headers: ["libbinder"],
+    // for memory heap analysis
+    static_libs: [
+        "libc_malloc_debug_backtrace",
+        "libc_logging",
+    ],
+    cflags: [
+        "-Werror",
+        "-Wno-error=deprecated-declarations",
+        "-Wall",
+    ],
+    sanitize: {
+        misc_undefined : [
+            "unsigned-integer-overflow",
+            "signed-integer-overflow",
+        ],
+    },
+}
diff --git a/media/libaudioclient/Android.mk b/media/libaudioclient/Android.mk
deleted file mode 100644
index 348ab50..0000000
--- a/media/libaudioclient/Android.mk
+++ /dev/null
@@ -1,50 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES += \
-    AudioEffect.cpp \
-    AudioPolicy.cpp \
-    AudioRecord.cpp \
-    AudioSystem.cpp \
-    AudioTrack.cpp \
-    AudioTrackShared.cpp \
-    IAudioFlinger.cpp \
-    IAudioFlingerClient.cpp \
-    IAudioPolicyService.cpp \
-    IAudioPolicyServiceClient.cpp \
-    IAudioRecord.cpp \
-    IAudioTrack.cpp \
-    IEffect.cpp \
-    IEffectClient.cpp \
-    ToneGenerator.cpp \
-
-LOCAL_SHARED_LIBRARIES := \
-	liblog libcutils libutils libbinder \
-        libdl libaudioutils \
-
-LOCAL_EXPORT_SHARED_LIBRARY_HEADERS := libbinder
-
-# for memory heap analysis
-LOCAL_STATIC_LIBRARIES := libc_malloc_debug_backtrace libc_logging
-
-LOCAL_MODULE:= libaudioclient
-
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-
-LOCAL_C_INCLUDES := \
-    $(TOP)/frameworks/native/include/media/openmax \
-    $(TOP)/frameworks/av/include/media/ \
-    $(TOP)/frameworks/av/media/libstagefright \
-    $(TOP)/frameworks/av/media/libmedia/aidl \
-    $(call include-path-for, audio-utils)
-
-LOCAL_EXPORT_C_INCLUDE_DIRS := \
-    frameworks/av/include/media \
-    frameworks/av/media/libmedia/aidl
-
-LOCAL_CFLAGS += -Werror -Wno-error=deprecated-declarations -Wall
-LOCAL_SANITIZE := unsigned-integer-overflow signed-integer-overflow
-
-include $(BUILD_SHARED_LIBRARY)
-
diff --git a/media/libaudiohal/Android.mk b/media/libaudiohal/Android.mk
index e82766f..893c626 100644
--- a/media/libaudiohal/Android.mk
+++ b/media/libaudiohal/Android.mk
@@ -3,11 +3,13 @@
 include $(CLEAR_VARS)
 
 LOCAL_SHARED_LIBRARIES := \
+    libbase \
     libcutils \
+    libeffects \
+    libfmq \
     libhardware \
     liblog \
-    libutils \
-    libeffects
+    libutils
 
 ifeq ($(ENABLE_TREBLE), true)
 
diff --git a/media/libaudiohal/ConversionHelperHidl.cpp b/media/libaudiohal/ConversionHelperHidl.cpp
index 1fabfbe..9f9eb75 100644
--- a/media/libaudiohal/ConversionHelperHidl.cpp
+++ b/media/libaudiohal/ConversionHelperHidl.cpp
@@ -82,26 +82,8 @@
     }
 }
 
-// static
-void ConversionHelperHidl::crashIfHalIsDead(const Status& status) {
-    LOG_ALWAYS_FATAL_IF(
-            status.transactionError() == DEAD_OBJECT, "HAL server crashed, need to restart");
-}
-
-status_t ConversionHelperHidl::processReturn(const char* funcName, const Status& status) {
-    const status_t st = status.transactionError();
-    ALOGE_IF(st, "%s %p %s: %s (from rpc)", mClassName, this, funcName, strerror(-st));
-    crashIfHalIsDead(status);
-    return st;
-}
-
-status_t ConversionHelperHidl::processReturn(
-        const char* funcName, const Status& status, hardware::audio::V2_0::Result retval) {
-    const status_t st = status.isOk() ? analyzeResult(retval) : status.transactionError();
-    ALOGE_IF(!status.isOk() && st, "%s %p %s: %s (from rpc)",
-            mClassName, this, funcName, strerror(-st));
-    crashIfHalIsDead(status);
-    return st;
+void ConversionHelperHidl::emitError(const char* funcName, const char* description) {
+    ALOGE("%s %p %s: %s (from rpc)", mClassName, this, funcName, description);
 }
 
 }  // namespace android
diff --git a/media/libaudiohal/ConversionHelperHidl.h b/media/libaudiohal/ConversionHelperHidl.h
index 428daf2..89e6e88 100644
--- a/media/libaudiohal/ConversionHelperHidl.h
+++ b/media/libaudiohal/ConversionHelperHidl.h
@@ -30,9 +30,6 @@
 namespace android {
 
 class ConversionHelperHidl {
-  public:
-    static void crashIfHalIsDead(const Status& status);
-
   protected:
     static status_t keysFromHal(const String8& keys, hidl_vec<hidl_string> *hidlKeys);
     static status_t parametersFromHal(const String8& kvPairs, hidl_vec<ParameterValue> *hidlParams);
@@ -40,18 +37,22 @@
 
     ConversionHelperHidl(const char* className);
 
-    status_t processReturn(const char* funcName, const Return<void>& ret) {
-        return processReturn(funcName, ret.getStatus());
-    }
-
     template<typename R, typename T>
     status_t processReturn(const char* funcName, const Return<R>& ret, T *retval) {
-        if (ret.getStatus().isOk()) {
+        if (ret.isOk()) {
             // This way it also works for enum class to unscoped enum conversion.
             *retval = static_cast<T>(static_cast<R>(ret));
             return OK;
         }
-        return processReturn(funcName, ret.getStatus());
+        return processReturn(funcName, ret);
+    }
+
+    template<typename T>
+    status_t processReturn(const char* funcName, const Return<T>& ret) {
+        if (!ret.isOk()) {
+            emitError(funcName, ret.description().c_str());
+        }
+        return ret.isOk() ? OK : UNKNOWN_ERROR;
     }
 
     status_t processReturn(const char* funcName, const Return<hardware::audio::V2_0::Result>& ret) {
@@ -61,16 +62,21 @@
     template<typename T>
     status_t processReturn(
             const char* funcName, const Return<T>& ret, hardware::audio::V2_0::Result retval) {
-        return processReturn(funcName, ret.getStatus(), retval);
+        const status_t st = ret.isOk() ? analyzeResult(retval) : UNKNOWN_ERROR;
+        if (!ret.isOk()) {
+            emitError(funcName, ret.description().c_str());
+        } else if (st) {
+            emitError(funcName, strerror(st));
+        }
+        return st;
     }
 
   private:
     const char* mClassName;
 
     static status_t analyzeResult(const hardware::audio::V2_0::Result& result);
-    status_t processReturn(const char* funcName, const Status& status);
-    status_t processReturn(
-            const char* funcName, const Status& status, hardware::audio::V2_0::Result retval);
+
+    void emitError(const char* funcName, const char* description);
 };
 
 }  // namespace android
diff --git a/media/libaudiohal/DevicesFactoryHalHidl.cpp b/media/libaudiohal/DevicesFactoryHalHidl.cpp
index efcc089..6444079 100644
--- a/media/libaudiohal/DevicesFactoryHalHidl.cpp
+++ b/media/libaudiohal/DevicesFactoryHalHidl.cpp
@@ -78,13 +78,12 @@
                     *device = new DeviceHalHidl(result);
                 }
             });
-    if (ret.getStatus().isOk()) {
+    if (ret.isOk()) {
         if (retval == Result::OK) return OK;
         else if (retval == Result::INVALID_ARGUMENTS) return BAD_VALUE;
         else return NO_INIT;
     }
-    ConversionHelperHidl::crashIfHalIsDead(ret.getStatus());
-    return ret.getStatus().transactionError();
+    return UNKNOWN_ERROR;
 }
 
 } // namespace android
diff --git a/media/libaudiohal/EffectHalHidl.cpp b/media/libaudiohal/EffectHalHidl.cpp
index 1cd1997..0a58fa0 100644
--- a/media/libaudiohal/EffectHalHidl.cpp
+++ b/media/libaudiohal/EffectHalHidl.cpp
@@ -103,8 +103,7 @@
                     effectDescriptorToHal(result, pDescriptor);
                 }
             });
-    ConversionHelperHidl::crashIfHalIsDead(ret.getStatus());
-    return ret.getStatus().isOk() ? analyzeResult(retval) : ret.getStatus().transactionError();
+    return ret.isOk() ? analyzeResult(retval) : UNKNOWN_ERROR;
 }
 
 } // namespace android
diff --git a/media/libaudiohal/EffectsFactoryHalHidl.cpp b/media/libaudiohal/EffectsFactoryHalHidl.cpp
index bacbe4e..1ab5dad 100644
--- a/media/libaudiohal/EffectsFactoryHalHidl.cpp
+++ b/media/libaudiohal/EffectsFactoryHalHidl.cpp
@@ -43,7 +43,7 @@
     return EffectIsNullUuid(pEffectUuid);
 }
 
-EffectsFactoryHalHidl::EffectsFactoryHalHidl() {
+EffectsFactoryHalHidl::EffectsFactoryHalHidl() : ConversionHelperHidl("EffectsFactory"){
     mEffectsFactory = IEffectsFactory::getService("audio_effects_factory");
 }
 
@@ -60,12 +60,11 @@
                     mLastDescriptors = result;
                 }
             });
-    if (ret.getStatus().isOk()) {
+    if (ret.isOk()) {
         return retval == Result::OK ? OK : NO_INIT;
     }
     mLastDescriptors.resize(0);
-    ConversionHelperHidl::crashIfHalIsDead(ret.getStatus());
-    return ret.getStatus().transactionError();
+    return processReturn(__FUNCTION__, ret);
 }
 
 status_t EffectsFactoryHalHidl::queryNumberEffects(uint32_t *pNumEffects) {
@@ -104,13 +103,12 @@
                     EffectHalHidl::effectDescriptorToHal(result, pDescriptor);
                 }
             });
-    if (ret.getStatus().isOk()) {
+    if (ret.isOk()) {
         if (retval == Result::OK) return OK;
         else if (retval == Result::INVALID_ARGUMENTS) return NAME_NOT_FOUND;
         else return NO_INIT;
     }
-    ConversionHelperHidl::crashIfHalIsDead(ret.getStatus());
-    return ret.getStatus().transactionError();
+    return processReturn(__FUNCTION__, ret);
 }
 
 status_t EffectsFactoryHalHidl::createEffect(
@@ -128,13 +126,12 @@
                     *effect = new EffectHalHidl(result, effectId);
                 }
             });
-    if (ret.getStatus().isOk()) {
+    if (ret.isOk()) {
         if (retval == Result::OK) return OK;
         else if (retval == Result::INVALID_ARGUMENTS) return NAME_NOT_FOUND;
         else return NO_INIT;
     }
-    ConversionHelperHidl::crashIfHalIsDead(ret.getStatus());
-    return ret.getStatus().transactionError();
+    return processReturn(__FUNCTION__, ret);
 }
 
 status_t EffectsFactoryHalHidl::dumpEffects(int fd) {
@@ -143,8 +140,7 @@
     hidlHandle->data[0] = fd;
     Return<void> ret = mEffectsFactory->debugDump(hidlHandle);
     native_handle_delete(hidlHandle);
-    ConversionHelperHidl::crashIfHalIsDead(ret.getStatus());
-    return ret.getStatus().transactionError();
+    return processReturn(__FUNCTION__, ret);
 }
 
 } // namespace android
diff --git a/media/libaudiohal/EffectsFactoryHalHidl.h b/media/libaudiohal/EffectsFactoryHalHidl.h
index f16db17..e89f042 100644
--- a/media/libaudiohal/EffectsFactoryHalHidl.h
+++ b/media/libaudiohal/EffectsFactoryHalHidl.h
@@ -27,7 +27,7 @@
 using ::android::hardware::audio::effect::V2_0::IEffectsFactory;
 using ::android::hardware::hidl_vec;
 
-class EffectsFactoryHalHidl : public EffectsFactoryHalInterface
+class EffectsFactoryHalHidl : public EffectsFactoryHalInterface, public ConversionHelperHidl
 {
   public:
     // Returns the number of different effects in all loaded libraries.
diff --git a/media/libaudiohal/StreamHalHidl.cpp b/media/libaudiohal/StreamHalHidl.cpp
index 2c6e564..5943e22 100644
--- a/media/libaudiohal/StreamHalHidl.cpp
+++ b/media/libaudiohal/StreamHalHidl.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <time.h>
+
 #define LOG_TAG "StreamHalHidl"
 //#define LOG_NDEBUG 0
 
@@ -28,18 +30,23 @@
 using ::android::hardware::audio::common::V2_0::AudioFormat;
 using ::android::hardware::audio::V2_0::AudioDrain;
 using ::android::hardware::audio::V2_0::IStreamOutCallback;
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
-using ::android::hardware::audio::V2_0::TimeSpec;
+using ::android::hardware::audio::V2_0::MessageQueueFlagBits;
 using ::android::hardware::audio::V2_0::MmapBufferInfo;
 using ::android::hardware::audio::V2_0::MmapPosition;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::V2_0::ThreadPriority;
+using ::android::hardware::audio::V2_0::TimeSpec;
+using ::android::hardware::MQDescriptorSync;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
 
 namespace android {
 
 StreamHalHidl::StreamHalHidl(IStream *stream)
-        : ConversionHelperHidl("Stream"), mStream(stream) {
+        : ConversionHelperHidl("Stream"),
+          mHalThreadPriority(static_cast<int>(ThreadPriority::NORMAL)),
+          mStream(stream) {
 }
 
 StreamHalHidl::~StreamHalHidl() {
@@ -176,6 +183,11 @@
     return processReturn("getMmapPosition", ret, retval);
 }
 
+status_t StreamHalHidl::setHalThreadPriority(int priority) {
+    mHalThreadPriority = priority;
+    return OK;
+}
+
 namespace {
 
 /* Notes on callback ownership.
@@ -229,14 +241,21 @@
 }  // namespace
 
 StreamOutHalHidl::StreamOutHalHidl(const sp<IStreamOut>& stream)
-        : StreamHalHidl(stream.get()), mStream(stream) {
+        : StreamHalHidl(stream.get()), mStream(stream), mEfGroup(nullptr),
+          mGetPresentationPositionNotSupported(false), mPPosFromWriteObtained(0) {
 }
 
 StreamOutHalHidl::~StreamOutHalHidl() {
-    if (mCallback.unsafe_get() && mStream != 0) {
-        processReturn("clearCallback", mStream->clearCallback());
+    if (mStream != 0) {
+        if (mCallback.unsafe_get()) {
+            processReturn("clearCallback", mStream->clearCallback());
+        }
+        processReturn("close", mStream->close());
     }
     mCallback.clear();
+    if (mEfGroup) {
+        EventFlag::deleteEventFlag(&mEfGroup);
+    }
 }
 
 status_t StreamOutHalHidl::getFrameSize(size_t *size) {
@@ -256,16 +275,89 @@
 
 status_t StreamOutHalHidl::write(const void *buffer, size_t bytes, size_t *written) {
     if (mStream == 0) return NO_INIT;
-    hidl_vec<uint8_t> hidlData;
-    hidlData.setToExternal(static_cast<uint8_t*>(const_cast<void*>(buffer)), bytes);
+    *written = 0;
+
+    if (bytes == 0 && !mDataMQ) {
+        // Can't determine the size for the MQ buffer. Wait for a non-empty write request.
+        ALOGW_IF(mCallback.unsafe_get(), "First call to async write with 0 bytes");
+        return OK;
+    }
+
+    status_t status;
+    if (!mDataMQ && (status = prepareForWriting(bytes)) != OK) {
+        return status;
+    }
+
+    const size_t availBytes = mDataMQ->availableToWrite();
+    if (bytes > availBytes) { bytes = availBytes; }
+    if (!mDataMQ->write(static_cast<const uint8_t*>(buffer), bytes)) {
+        ALOGW("data message queue write failed");
+    }
+    mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY));
+
+    // TODO: Remove manual event flag handling once blocking MQ is implemented. b/33815422
+    uint32_t efState = 0;
+retry:
+    status_t ret = mEfGroup->wait(
+            static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL), &efState, NS_PER_SEC);
+    if (efState & static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL)) {
+        WriteStatus writeStatus = { Result::NOT_INITIALIZED, 0, 0, { 0, 0 } };
+        mStatusMQ->read(&writeStatus);
+        if (writeStatus.retval == Result::OK) {
+            status = OK;
+            *written = writeStatus.written;
+            mPPosFromWriteFrames = writeStatus.frames;
+            mPPosFromWriteTS.tv_sec = writeStatus.timeStamp.tvSec;
+            mPPosFromWriteTS.tv_nsec = writeStatus.timeStamp.tvNSec;
+            struct timespec timeNow;
+            clock_gettime(CLOCK_MONOTONIC, &timeNow);
+            mPPosFromWriteObtained = timeNow.tv_sec * 1000000 + timeNow.tv_nsec / 1000;
+        } else {
+            status = processReturn("write", writeStatus.retval);
+        }
+        return status;
+    }
+    if (ret == -EAGAIN) {
+        // This normally retries no more than once.
+        goto retry;
+    }
+    return ret;
+}
+
+status_t StreamOutHalHidl::prepareForWriting(size_t bufferSize) {
+    std::unique_ptr<DataMQ> tempDataMQ;
+    std::unique_ptr<StatusMQ> tempStatusMQ;
     Result retval;
-    Return<void> ret = mStream->write(
-            hidlData,
-            [&](Result r, uint64_t w) {
+    Return<void> ret = mStream->prepareForWriting(
+            1, bufferSize, ThreadPriority(mHalThreadPriority),
+            [&](Result r,
+                    const MQDescriptorSync<uint8_t>& dataMQ,
+                    const MQDescriptorSync<WriteStatus>& statusMQ) {
                 retval = r;
-                *written = w;
+                if (retval == Result::OK) {
+                    tempDataMQ.reset(new DataMQ(dataMQ));
+                    tempStatusMQ.reset(new StatusMQ(statusMQ));
+                    if (tempDataMQ->isValid() && tempDataMQ->getEventFlagWord()) {
+                        EventFlag::createEventFlag(tempDataMQ->getEventFlagWord(), &mEfGroup);
+                    }
+                }
             });
-    return processReturn("write", ret, retval);
+    if (!ret.isOk() || retval != Result::OK) {
+        return processReturn("prepareForWriting", ret, retval);
+    }
+    if (!tempDataMQ || !tempDataMQ->isValid() || !tempStatusMQ || !tempStatusMQ->isValid()
+        || !mEfGroup) {
+        ALOGE_IF(!tempDataMQ, "Failed to obtain data message queue for writing");
+        ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "Data message queue for writing is invalid");
+        ALOGE_IF(!tempStatusMQ, "Failed to obtain status message queue for writing");
+        ALOGE_IF(tempStatusMQ && !tempStatusMQ->isValid(),
+                "Status message queue for writing is invalid");
+        ALOGE_IF(!mEfGroup, "Event flag creation for writing failed");
+        return NO_INIT;
+    }
+    mDataMQ = std::move(tempDataMQ);
+    mStatusMQ = std::move(tempStatusMQ);
+    return OK;
 }
 
 status_t StreamOutHalHidl::getRenderPosition(uint32_t *dspFrames) {
@@ -342,6 +434,18 @@
 
 status_t StreamOutHalHidl::getPresentationPosition(uint64_t *frames, struct timespec *timestamp) {
     if (mStream == 0) return NO_INIT;
+    if (mGetPresentationPositionNotSupported) return INVALID_OPERATION;
+    struct timespec timeNow;
+    clock_gettime(CLOCK_MONOTONIC, &timeNow);
+    uint64_t timeStampNow = timeNow.tv_sec * 1000000 + timeNow.tv_nsec / 1000;
+    if (timeStampNow - mPPosFromWriteObtained <= 1000) {
+        // No more than 1 ms passed since the last write, use cached result to avoid binder calls.
+        *frames = mPPosFromWriteFrames;
+        timestamp->tv_sec = mPPosFromWriteTS.tv_sec;
+        timestamp->tv_nsec = mPPosFromWriteTS.tv_nsec;
+        return OK;
+    }
+
     Result retval;
     Return<void> ret = mStream->getPresentationPosition(
             [&](Result r, uint64_t hidlFrames, const TimeSpec& hidlTimeStamp) {
@@ -352,6 +456,9 @@
                     timestamp->tv_nsec = hidlTimeStamp.tvNSec;
                 }
             });
+    if (ret.isOk() && retval == Result::NOT_SUPPORTED) {
+        mGetPresentationPositionNotSupported = true;
+    }
     return processReturn("getPresentationPosition", ret, retval);
 }
 
@@ -378,10 +485,16 @@
 
 
 StreamInHalHidl::StreamInHalHidl(const sp<IStreamIn>& stream)
-        : StreamHalHidl(stream.get()), mStream(stream) {
+        : StreamHalHidl(stream.get()), mStream(stream), mEfGroup(nullptr) {
 }
 
 StreamInHalHidl::~StreamInHalHidl() {
+    if (mStream != 0) {
+        processReturn("close", mStream->close());
+    }
+    if (mEfGroup) {
+        EventFlag::deleteEventFlag(&mEfGroup);
+    }
 }
 
 status_t StreamInHalHidl::getFrameSize(size_t *size) {
@@ -396,17 +509,83 @@
 
 status_t StreamInHalHidl::read(void *buffer, size_t bytes, size_t *read) {
     if (mStream == 0) return NO_INIT;
+    *read = 0;
+
+    if (bytes == 0 && !mDataMQ) {
+        // Can't determine the size for the MQ buffer. Wait for a non-empty read request.
+        return OK;
+    }
+
+    status_t status;
+    if (!mDataMQ) {
+        if ((status = prepareForReading(bytes)) != OK) return status;
+        // Trigger the first read.
+        mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL));
+    }
+
+    // TODO: Remove manual event flag handling once blocking MQ is implemented. b/33815422
+    uint32_t efState = 0;
+retry:
+    status_t ret = mEfGroup->wait(
+            static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY), &efState, NS_PER_SEC);
+    if (efState & static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY)) {
+        ReadStatus readStatus = { Result::NOT_INITIALIZED, 0 };
+        const size_t availToRead = mDataMQ->availableToRead();
+        if (bytes > availToRead) { bytes = availToRead; }
+        mDataMQ->read(static_cast<uint8_t*>(buffer), bytes);
+        mStatusMQ->read(&readStatus);
+        mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL));
+        if (readStatus.retval == Result::OK) {
+            ALOGW_IF(availToRead != readStatus.read,
+                    "HAL read report inconsistent: mq = %d, status = %d",
+                    (int32_t)availToRead, (int32_t)readStatus.read);
+            *read = readStatus.read;
+        } else {
+            status = processReturn("read", readStatus.retval);
+        }
+        return status;
+    }
+    if (ret == -EAGAIN) {
+        // This normally retries no more than once.
+        goto retry;
+    }
+    return ret;
+}
+
+status_t StreamInHalHidl::prepareForReading(size_t bufferSize) {
+    std::unique_ptr<DataMQ> tempDataMQ;
+    std::unique_ptr<StatusMQ> tempStatusMQ;
     Result retval;
-    Return<void> ret = mStream->read(
-            bytes,
-            [&](Result r, const hidl_vec<uint8_t>& hidlData) {
+    Return<void> ret = mStream->prepareForReading(
+            1, bufferSize, ThreadPriority(mHalThreadPriority),
+            [&](Result r,
+                    const MQDescriptorSync<uint8_t>& dataMQ,
+                    const MQDescriptorSync<ReadStatus>& statusMQ) {
                 retval = r;
-                *read = std::min(hidlData.size(), bytes);
                 if (retval == Result::OK) {
-                    memcpy(buffer, &hidlData[0], *read);
+                    tempDataMQ.reset(new DataMQ(dataMQ));
+                    tempStatusMQ.reset(new StatusMQ(statusMQ));
+                    if (tempDataMQ->isValid() && tempDataMQ->getEventFlagWord()) {
+                        EventFlag::createEventFlag(tempDataMQ->getEventFlagWord(), &mEfGroup);
+                    }
                 }
             });
-    return processReturn("read", ret, retval);
+    if (!ret.isOk() || retval != Result::OK) {
+        return processReturn("prepareForReading", ret, retval);
+    }
+    if (!tempDataMQ || !tempDataMQ->isValid() || !tempStatusMQ || !tempStatusMQ->isValid()
+        || !mEfGroup) {
+        ALOGE_IF(!tempDataMQ, "Failed to obtain data message queue for reading");
+        ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "Data message queue for reading is invalid");
+        ALOGE_IF(!tempStatusMQ, "Failed to obtain status message queue for reading");
+        ALOGE_IF(tempStatusMQ && !tempStatusMQ->isValid(),
+                "Status message queue for reading is invalid");
+        ALOGE_IF(!mEfGroup, "Event flag creation for reading failed");
+        return NO_INIT;
+    }
+    mDataMQ = std::move(tempDataMQ);
+    mStatusMQ = std::move(tempStatusMQ);
+    return OK;
 }
 
 status_t StreamInHalHidl::getInputFramesLost(uint32_t *framesLost) {
diff --git a/media/libaudiohal/StreamHalHidl.h b/media/libaudiohal/StreamHalHidl.h
index 377acb4..0093957 100644
--- a/media/libaudiohal/StreamHalHidl.h
+++ b/media/libaudiohal/StreamHalHidl.h
@@ -20,6 +20,8 @@
 #include <android/hardware/audio/2.0/IStream.h>
 #include <android/hardware/audio/2.0/IStreamIn.h>
 #include <android/hardware/audio/2.0/IStreamOut.h>
+#include <fmq/EventFlag.h>
+#include <fmq/MessageQueue.h>
 #include <media/audiohal/StreamHalInterface.h>
 
 #include "ConversionHelperHidl.h"
@@ -27,7 +29,11 @@
 using ::android::hardware::audio::V2_0::IStream;
 using ::android::hardware::audio::V2_0::IStreamIn;
 using ::android::hardware::audio::V2_0::IStreamOut;
+using ::android::hardware::EventFlag;
+using ::android::hardware::MessageQueue;
 using ::android::hardware::Return;
+using ReadStatus = ::android::hardware::audio::V2_0::IStreamIn::ReadStatus;
+using WriteStatus = ::android::hardware::audio::V2_0::IStreamOut::WriteStatus;
 
 namespace android {
 
@@ -80,6 +86,10 @@
     // Get current read/write position in the mmap buffer
     virtual status_t getMmapPosition(struct audio_mmap_position *position);
 
+    // Set the priority of the thread that interacts with the HAL
+    // (must match the priority of the audioflinger's thread that calls 'read' / 'write')
+    virtual status_t setHalThreadPriority(int priority);
+
   protected:
     // Subclasses can not be constructed directly by clients.
     explicit StreamHalHidl(IStream *stream);
@@ -87,6 +97,8 @@
     // The destructor automatically closes the stream.
     virtual ~StreamHalHidl();
 
+    int mHalThreadPriority;
+
   private:
     IStream *mStream;
 };
@@ -143,14 +155,25 @@
 
   private:
     friend class DeviceHalHidl;
+    typedef MessageQueue<uint8_t, hardware::kSynchronizedReadWrite> DataMQ;
+    typedef MessageQueue<WriteStatus, hardware::kSynchronizedReadWrite> StatusMQ;
 
     wp<StreamOutHalInterfaceCallback> mCallback;
     sp<IStreamOut> mStream;
+    std::unique_ptr<DataMQ> mDataMQ;
+    std::unique_ptr<StatusMQ> mStatusMQ;
+    EventFlag* mEfGroup;
+    bool mGetPresentationPositionNotSupported;
+    uint64_t mPPosFromWriteObtained;
+    uint64_t mPPosFromWriteFrames;
+    struct timespec mPPosFromWriteTS;
 
     // Can not be constructed directly by clients.
     StreamOutHalHidl(const sp<IStreamOut>& stream);
 
     virtual ~StreamOutHalHidl();
+
+    status_t prepareForWriting(size_t bufferSize);
 };
 
 class StreamInHalHidl : public StreamInHalInterface, public StreamHalHidl {
@@ -173,13 +196,20 @@
 
   private:
     friend class DeviceHalHidl;
+    typedef MessageQueue<uint8_t, hardware::kSynchronizedReadWrite> DataMQ;
+    typedef MessageQueue<ReadStatus, hardware::kSynchronizedReadWrite> StatusMQ;
 
     sp<IStreamIn> mStream;
+    std::unique_ptr<DataMQ> mDataMQ;
+    std::unique_ptr<StatusMQ> mStatusMQ;
+    EventFlag* mEfGroup;
 
     // Can not be constructed directly by clients.
     StreamInHalHidl(const sp<IStreamIn>& stream);
 
     virtual ~StreamInHalHidl();
+
+    status_t prepareForReading(size_t bufferSize);
 };
 
 } // namespace android
diff --git a/media/libaudiohal/StreamHalLocal.cpp b/media/libaudiohal/StreamHalLocal.cpp
index 61c8898..b25e518 100644
--- a/media/libaudiohal/StreamHalLocal.cpp
+++ b/media/libaudiohal/StreamHalLocal.cpp
@@ -96,6 +96,12 @@
     return mStream->dump(mStream, fd);
 }
 
+status_t StreamHalLocal::setHalThreadPriority(int) {
+    // Don't need to do anything as local hal is executed by audioflinger directly
+    // on the same thread.
+    return OK;
+}
+
 StreamOutHalLocal::StreamOutHalLocal(audio_stream_out_t *stream, sp<DeviceHalLocal> device)
         : StreamHalLocal(&stream->common, device), mStream(stream) {
 }
diff --git a/media/libaudiohal/StreamHalLocal.h b/media/libaudiohal/StreamHalLocal.h
index fbb000a..8c96c1f 100644
--- a/media/libaudiohal/StreamHalLocal.h
+++ b/media/libaudiohal/StreamHalLocal.h
@@ -70,6 +70,10 @@
     // Get current read/write position in the mmap buffer
     virtual status_t getMmapPosition(struct audio_mmap_position *position) = 0;
 
+    // Set the priority of the thread that interacts with the HAL
+    // (must match the priority of the audioflinger's thread that calls 'read' / 'write')
+    virtual status_t setHalThreadPriority(int priority);
+
   protected:
     // Subclasses can not be constructed directly by clients.
     StreamHalLocal(audio_stream_t *stream, sp<DeviceHalLocal> device);
diff --git a/media/libeffects/downmix/EffectDownmix.c b/media/libeffects/downmix/EffectDownmix.c
index 323930a..f27d5ca 100644
--- a/media/libeffects/downmix/EffectDownmix.c
+++ b/media/libeffects/downmix/EffectDownmix.c
@@ -22,7 +22,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <android/log.h>
+#include <log/log.h>
 
 #include "EffectDownmix.h"
 
diff --git a/media/libeffects/factory/EffectsFactory.c b/media/libeffects/factory/EffectsFactory.c
index 74d489b..554c14d 100644
--- a/media/libeffects/factory/EffectsFactory.c
+++ b/media/libeffects/factory/EffectsFactory.c
@@ -24,10 +24,10 @@
 #include <string.h>
 #include <unistd.h>
 
-#include <android/log.h>
 #include <cutils/config_utils.h>
 #include <cutils/misc.h>
 #include <cutils/properties.h>
+#include <log/log.h>
 
 #include <system/audio_effects/audio_effects_conf.h>
 
diff --git a/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h b/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h
index 4f9f438..7ea0593 100644
--- a/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h
+++ b/media/libeffects/loudness/dsp/core/dynamic_range_compression-inl.h
@@ -21,7 +21,7 @@
 #endif
 //#define LOG_NDEBUG 0
 
-#include <android/log.h>
+#include <log/log.h>
 
 namespace le_fx {
 
diff --git a/media/libeffects/loudness/dsp/core/interpolator_base-inl.h b/media/libeffects/loudness/dsp/core/interpolator_base-inl.h
index bdb6818..fb87c79 100644
--- a/media/libeffects/loudness/dsp/core/interpolator_base-inl.h
+++ b/media/libeffects/loudness/dsp/core/interpolator_base-inl.h
@@ -21,7 +21,7 @@
 #endif
 //#define LOG_NDEBUG 0
 
-#include <android/log.h>
+#include <log/log.h>
 
 #include "dsp/core/basic.h"
 
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index f8a6a4e..d1ade1d 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -16,6 +16,9 @@
 
 //#define LOG_NDEBUG 0
 #define LOG_TAG "NuPlayer"
+
+#include <inttypes.h>
+
 #include <utils/Log.h>
 
 #include "NuPlayer.h"
@@ -1287,6 +1290,8 @@
     } else {
         ALOGW("resume called when renderer is gone or not set");
     }
+
+    mLastStartedPlayingTimeNs = systemTime();
 }
 
 status_t NuPlayer::onInstantiateSecureDecoders() {
@@ -1342,26 +1347,26 @@
         flags |= Renderer::FLAG_REAL_TIME;
     }
 
-    sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
-    sp<MetaData> videoMeta = mSource->getFormatMeta(false /* audio */);
-    if (audioMeta == NULL && videoMeta == NULL) {
+    bool hasAudio = (mSource->getFormat(true /* audio */) != NULL);
+    bool hasVideo = (mSource->getFormat(false /* audio */) != NULL);
+    if (!hasAudio && !hasVideo) {
         ALOGE("no metadata for either audio or video source");
         mSource->stop();
         mSourceStarted = false;
         notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, ERROR_MALFORMED);
         return;
     }
-    ALOGV_IF(audioMeta == NULL, "no metadata for audio source");  // video only stream
+    ALOGV_IF(!hasAudio, "no metadata for audio source");  // video only stream
+
+    sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
 
     audio_stream_type_t streamType = AUDIO_STREAM_MUSIC;
     if (mAudioSink != NULL) {
         streamType = mAudioSink->getAudioStreamType();
     }
 
-    sp<AMessage> videoFormat = mSource->getFormat(false /* audio */);
-
     mOffloadAudio =
-        canOffloadStream(audioMeta, (videoFormat != NULL), mSource->isStreaming(), streamType)
+        canOffloadStream(audioMeta, hasVideo, mSource->isStreaming(), streamType)
                 && (mPlaybackSettings.mSpeed == 1.f && mPlaybackSettings.mPitch == 1.f);
     if (mOffloadAudio) {
         flags |= Renderer::FLAG_OFFLOAD_AUDIO;
@@ -1396,6 +1401,8 @@
         mAudioDecoder->setRenderer(mRenderer);
     }
 
+    mLastStartedPlayingTimeNs = systemTime();
+
     postScanSources();
 }
 
@@ -1414,6 +1421,16 @@
     } else {
         ALOGW("pause called when renderer is gone or not set");
     }
+
+    sp<NuPlayerDriver> driver = mDriver.promote();
+    if (driver != NULL) {
+        int64_t now = systemTime();
+        int64_t played = now - mLastStartedPlayingTimeNs;
+        ALOGD("played from %" PRId64 " to %" PRId64 " = %" PRId64 ,
+              mLastStartedPlayingTimeNs, now, played);
+
+        driver->notifyMorePlayingTimeUs((played+500)/1000);
+    }
 }
 
 bool NuPlayer::audioDecoderStillNeeded() {
@@ -1697,6 +1714,16 @@
         notifyListener(MEDIA_SET_VIDEO_SIZE, 0, 0);
         return;
     }
+    int32_t err = OK;
+    inputFormat->findInt32("err", &err);
+    if (err == -EWOULDBLOCK) {
+        ALOGW("Video meta is not available yet!");
+        return;
+    }
+    if (err != OK) {
+        ALOGW("Something is wrong with video meta!");
+        return;
+    }
 
     int32_t displayWidth, displayHeight;
     if (outputFormat != NULL) {
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.h b/media/libmediaplayerservice/nuplayer/NuPlayer.h
index c8b0102..6f737bb 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.h
@@ -158,6 +158,8 @@
     int32_t mVideoDecoderGeneration;
     int32_t mRendererGeneration;
 
+    int64_t mLastStartedPlayingTimeNs;
+
     int64_t mPreviousSeekTimeUs;
 
     List<sp<Action> > mDeferredActions;
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
index 6ec79e6..f7e56e4 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
@@ -31,8 +31,14 @@
 #include <media/stagefright/MetaData.h>
 #include <media/stagefright/Utils.h>
 
+#include <media/IMediaAnalyticsService.h>
+
+static const int kDumpLockRetries = 50;
+static const int kDumpLockSleepUs = 20000;
+
 namespace android {
 
+
 NuPlayerDriver::NuPlayerDriver(pid_t pid)
     : mState(STATE_IDLE),
       mIsAsyncPrepare(false),
@@ -41,14 +47,20 @@
       mDurationUs(-1),
       mPositionUs(-1),
       mSeekInProgress(false),
+      mPlayingTimeUs(0),
       mLooper(new ALooper),
       mPlayerFlags(0),
+      mAnalyticsItem(NULL),
       mAtEOS(false),
       mLooping(false),
       mAutoLoop(false) {
-    ALOGV("NuPlayerDriver(%p)", this);
+    ALOGD("NuPlayerDriver(%p) created, clientPid(%d)", this, pid);
     mLooper->setName("NuPlayerDriver Looper");
 
+    // set up an analytics record
+    mAnalyticsItem = new MediaAnalyticsItem("nuplayer");
+    mAnalyticsItem->generateSessionID();
+
     mLooper->start(
             false, /* runOnCallingThread */
             true,  /* canCallJava */
@@ -63,6 +75,15 @@
 NuPlayerDriver::~NuPlayerDriver() {
     ALOGV("~NuPlayerDriver(%p)", this);
     mLooper->stop();
+
+    // finalize any pending metrics, usually a no-op.
+    finalizeMetrics("destructor");
+    logMetrics("destructor");
+
+    if (mAnalyticsItem != NULL) {
+        delete mAnalyticsItem;
+        mAnalyticsItem = NULL;
+    }
 }
 
 status_t NuPlayerDriver::initCheck() {
@@ -450,8 +471,103 @@
     return OK;
 }
 
+void NuPlayerDriver::finalizeMetrics(const char *where) {
+    if (where == NULL) {
+        where = "unknown";
+    }
+    ALOGD("finalizeMetrics(%p) from %s at state %d", this, where, mState);
+
+    // gather the final stats for this record
+    Vector<sp<AMessage>> trackStats;
+    mPlayer->getStats(&trackStats);
+
+    if (trackStats.size() > 0) {
+        for (size_t i = 0; i < trackStats.size(); ++i) {
+            const sp<AMessage> &stats = trackStats.itemAt(i);
+
+            AString mime;
+            stats->findString("mime", &mime);
+
+            AString name;
+            stats->findString("component-name", &name);
+
+            if (mime.startsWith("video/")) {
+                int32_t width, height;
+                mAnalyticsItem->setCString("video/mime", mime.c_str());
+                if (!name.empty()) {
+                    mAnalyticsItem->setCString("video/codec", name.c_str());
+                }
+
+                if (stats->findInt32("width", &width)
+                        && stats->findInt32("height", &height)) {
+                    mAnalyticsItem->setInt32("wid", width);
+                    mAnalyticsItem->setInt32("ht", height);
+                }
+
+                int64_t numFramesTotal = 0;
+                int64_t numFramesDropped = 0;
+                stats->findInt64("frames-total", &numFramesTotal);
+                stats->findInt64("frames-dropped-output", &numFramesDropped);
+
+                mAnalyticsItem->setInt64("frames", numFramesTotal);
+                mAnalyticsItem->setInt64("dropped", numFramesDropped);
+
+
+            } else if (mime.startsWith("audio/")) {
+                mAnalyticsItem->setCString("audio/mime", mime.c_str());
+                if (!name.empty()) {
+                    mAnalyticsItem->setCString("audio/codec", name.c_str());
+                }
+            }
+        }
+
+        // getDuration() uses mLock for mutex -- careful where we use it.
+        int duration_ms = -1;
+        getDuration(&duration_ms);
+        if (duration_ms != -1) {
+            mAnalyticsItem->setInt64("duration", duration_ms);
+        }
+
+        if (mPlayingTimeUs > 0) {
+            mAnalyticsItem->setInt64("playing", (mPlayingTimeUs+500)/1000 );
+        }
+    }
+}
+
+
+void NuPlayerDriver::logMetrics(const char *where) {
+    if (where == NULL) {
+        where = "unknown";
+    }
+    ALOGD("logMetrics(%p) from %s at state %d", this, where, mState);
+
+    if (mAnalyticsItem == NULL || mAnalyticsItem->isEnabled() == false) {
+        return;
+    }
+
+    // only bother to log non-empty records
+    if (mAnalyticsItem->count() > 0) {
+
+        mAnalyticsItem->setFinalized(true);
+        mAnalyticsItem->selfrecord();
+
+        // re-init in case we prepare() and start() again.
+        delete mAnalyticsItem ;
+        mAnalyticsItem = new MediaAnalyticsItem("nuplayer");
+        if (mAnalyticsItem) {
+            mAnalyticsItem->generateSessionID();
+        }
+    } else {
+        ALOGV("did not have anything to record");
+    }
+}
+
 status_t NuPlayerDriver::reset() {
     ALOGD("reset(%p) at state %d", this, mState);
+
+    finalizeMetrics("reset");
+    logMetrics("reset");
+
     Mutex::Autolock autoLock(mLock);
 
     switch (mState) {
@@ -493,6 +609,7 @@
     mDurationUs = -1;
     mPositionUs = -1;
     mLooping = false;
+    mPlayingTimeUs = 0;
 
     return OK;
 }
@@ -624,6 +741,11 @@
     mDurationUs = durationUs;
 }
 
+void NuPlayerDriver::notifyMorePlayingTimeUs(int64_t playingUs) {
+    Mutex::Autolock autoLock(mLock);
+    mPlayingTimeUs += playingUs;
+}
+
 void NuPlayerDriver::notifySeekComplete() {
     ALOGV("notifySeekComplete(%p)", this);
     Mutex::Autolock autoLock(mLock);
@@ -657,6 +779,24 @@
     AString logString(" NuPlayer\n");
     char buf[256] = {0};
 
+    bool locked = false;
+    for (int i = 0; i < kDumpLockRetries; ++i) {
+        if (mLock.tryLock() == NO_ERROR) {
+            locked = true;
+            break;
+        }
+        usleep(kDumpLockSleepUs);
+    }
+
+    if (locked) {
+        snprintf(buf, sizeof(buf), "  state(%d), atEOS(%d), looping(%d), autoLoop(%d)\n",
+                mState, mAtEOS, mLooping, mAutoLoop);
+        mLock.unlock();
+    } else {
+        snprintf(buf, sizeof(buf), "  NPD(%p) lock is taken\n", this);
+    }
+    logString.append(buf);
+
     for (size_t i = 0; i < trackStats.size(); ++i) {
         const sp<AMessage> &stats = trackStats.itemAt(i);
 
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.h b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.h
index 317b34c..9b784ae 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.h
@@ -16,6 +16,7 @@
 
 #include <media/MediaPlayerInterface.h>
 
+#include <media/MediaAnalyticsItem.h>
 #include <media/stagefright/foundation/ABase.h>
 
 namespace android {
@@ -75,6 +76,7 @@
     void notifyResetComplete();
     void notifySetSurfaceComplete();
     void notifyDuration(int64_t durationUs);
+    void notifyMorePlayingTimeUs(int64_t timeUs);
     void notifySeekComplete();
     void notifySeekComplete_l();
     void notifyListener(int msg, int ext1 = 0, int ext2 = 0, const Parcel *in = NULL);
@@ -112,6 +114,7 @@
     int64_t mDurationUs;
     int64_t mPositionUs;
     bool mSeekInProgress;
+    int64_t mPlayingTimeUs;
     // <<<
 
     sp<ALooper> mLooper;
@@ -119,10 +122,15 @@
     sp<AudioSink> mAudioSink;
     uint32_t mPlayerFlags;
 
+    MediaAnalyticsItem *mAnalyticsItem;
+
     bool mAtEOS;
     bool mLooping;
     bool mAutoLoop;
 
+    void finalizeMetrics(const char *where);
+    void logMetrics(const char *where);
+
     status_t prepare_l();
     status_t start_l();
     void notifyListener_l(int msg, int ext1 = 0, int ext2 = 0, const Parcel *in = NULL);
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
index 5197167..6006730 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
@@ -77,7 +77,11 @@
     // an error or ERROR_END_OF_STREAM if not.
     virtual status_t feedMoreTSData() = 0;
 
+    // Returns non-NULL format when the specified track exists.
+    // When the format has "err" set to -EWOULDBLOCK, source needs more time to get valid meta data.
+    // Returns NULL if the specified track doesn't exist or is invalid;
     virtual sp<AMessage> getFormat(bool audio);
+
     virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
     virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
 
diff --git a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
index 7f9f913..d6b1e8c 100644
--- a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
@@ -234,8 +234,7 @@
     }
     status_t err = convertMetaDataToMessage(meta, &format);
     if (err != OK) { // format may have been cleared on error
-        format = new AMessage;
-        format->setInt32("err", err);
+        return NULL;
     }
     return format;
 }
diff --git a/media/libnbaio/NBLog.cpp b/media/libnbaio/NBLog.cpp
index c728e3e..f019df5 100644
--- a/media/libnbaio/NBLog.cpp
+++ b/media/libnbaio/NBLog.cpp
@@ -23,7 +23,7 @@
 #include <string.h>
 #include <time.h>
 #include <new>
-#include <cutils/atomic.h>
+#include <audio_utils/roundup.h>
 #include <media/nbaio/NBLog.h>
 #include <utils/Log.h>
 #include <utils/String8.h>
@@ -74,19 +74,30 @@
 // ---------------------------------------------------------------------------
 
 NBLog::Writer::Writer()
-    : mSize(0), mShared(NULL), mRear(0), mEnabled(false)
+    : mShared(NULL), mFifo(NULL), mFifoWriter(NULL), mEnabled(false)
 {
 }
 
-NBLog::Writer::Writer(size_t size, void *shared)
-    : mSize(roundup(size)), mShared((Shared *) shared), mRear(0), mEnabled(mShared != NULL)
+NBLog::Writer::Writer(void *shared, size_t size)
+    : mShared((Shared *) shared),
+      mFifo(mShared != NULL ?
+        new audio_utils_fifo(size, sizeof(uint8_t),
+            mShared->mBuffer, mShared->mRear, NULL /*throttlesFront*/) : NULL),
+      mFifoWriter(mFifo != NULL ? new audio_utils_fifo_writer(*mFifo) : NULL),
+      mEnabled(mFifoWriter != NULL)
 {
 }
 
-NBLog::Writer::Writer(size_t size, const sp<IMemory>& iMemory)
-    : mSize(roundup(size)), mShared(iMemory != 0 ? (Shared *) iMemory->pointer() : NULL),
-      mIMemory(iMemory), mRear(0), mEnabled(mShared != NULL)
+NBLog::Writer::Writer(const sp<IMemory>& iMemory, size_t size)
+    : Writer(iMemory != 0 ? (Shared *) iMemory->pointer() : NULL, size)
 {
+    mIMemory = iMemory;
+}
+
+NBLog::Writer::~Writer()
+{
+    delete mFifoWriter;
+    delete mFifo;
 }
 
 void NBLog::Writer::log(const char *string)
@@ -95,8 +106,8 @@
         return;
     }
     size_t length = strlen(string);
-    if (length > 255) {
-        length = 255;
+    if (length > Entry::kMaxLength) {
+        length = Entry::kMaxLength;
     }
     log(EVENT_STRING, string, length);
 }
@@ -117,7 +128,7 @@
     if (!mEnabled) {
         return;
     }
-    char buffer[256];
+    char buffer[Entry::kMaxLength + 1 /*NUL*/];
     int length = vsnprintf(buffer, sizeof(buffer), fmt, ap);
     if (length >= (int) sizeof(buffer)) {
         length = sizeof(buffer) - 1;
@@ -153,7 +164,10 @@
     if (!mEnabled) {
         return;
     }
-    if (data == NULL || length > 255) {
+    if (data == NULL || length > Entry::kMaxLength) {
+        // TODO Perhaps it makes sense to display truncated data or at least a
+        //      message that the data is too long?  The current behavior can create
+        //      a confusion for a programmer debugging their code.
         return;
     }
     switch (event) {
@@ -177,26 +191,16 @@
         log(entry->mEvent, entry->mData, entry->mLength);
         return;
     }
-    size_t rear = mRear & (mSize - 1);
-    size_t written = mSize - rear;      // written = number of bytes that have been written so far
-    size_t need = entry->mLength + 3;   // mEvent, mLength, data[length], mLength
-                                        // need = number of bytes remaining to write
-    if (written > need) {
-        written = need;
-    }
-    size_t i;
+    size_t need = entry->mLength + Entry::kOverhead;    // mEvent, mLength, data[length], mLength
+                                                        // need = number of bytes remaining to write
+
     // FIXME optimize this using memcpy for the data part of the Entry.
     // The Entry could have a method copyTo(ptr, offset, size) to optimize the copy.
-    for (i = 0; i < written; ++i) {
-        mShared->mBuffer[rear + i] = entry->readAt(i);
+    uint8_t temp[Entry::kMaxLength + Entry::kOverhead];
+    for (size_t i = 0; i < need; i++) {
+        temp[i] = entry->readAt(i);
     }
-    if (rear + written == mSize && (need -= written) > 0)  {
-        for (i = 0; i < need; ++i) {
-            mShared->mBuffer[i] = entry->readAt(written + i);
-        }
-        written += need;
-    }
-    android_atomic_release_store(mRear += written, &mShared->mRear);
+    mFifoWriter->write(temp, need);
 }
 
 bool NBLog::Writer::isEnabled() const
@@ -218,8 +222,8 @@
 {
 }
 
-NBLog::LockedWriter::LockedWriter(size_t size, void *shared)
-    : Writer(size, shared)
+NBLog::LockedWriter::LockedWriter(void *shared, size_t size)
+    : Writer(shared, size)
 {
 }
 
@@ -273,60 +277,59 @@
 
 // ---------------------------------------------------------------------------
 
-NBLog::Reader::Reader(size_t size, const void *shared)
-    : mSize(roundup(size)), mShared((const Shared *) shared), mFront(0)
+NBLog::Reader::Reader(const void *shared, size_t size)
+    : mShared((/*const*/ Shared *) shared), /*mIMemory*/
+      mFd(-1), mIndent(0),
+      mFifo(mShared != NULL ?
+        new audio_utils_fifo(size, sizeof(uint8_t),
+            mShared->mBuffer, mShared->mRear, NULL /*throttlesFront*/) : NULL),
+      mFifoReader(mFifo != NULL ? new audio_utils_fifo_reader(*mFifo) : NULL)
 {
 }
 
-NBLog::Reader::Reader(size_t size, const sp<IMemory>& iMemory)
-    : mSize(roundup(size)), mShared(iMemory != 0 ? (const Shared *) iMemory->pointer() : NULL),
-      mIMemory(iMemory), mFront(0)
+NBLog::Reader::Reader(const sp<IMemory>& iMemory, size_t size)
+    : Reader(iMemory != 0 ? (Shared *) iMemory->pointer() : NULL, size)
 {
+    mIMemory = iMemory;
+}
+
+NBLog::Reader::~Reader()
+{
+    delete mFifoReader;
+    delete mFifo;
 }
 
 void NBLog::Reader::dump(int fd, size_t indent)
 {
-    int32_t rear = android_atomic_acquire_load(&mShared->mRear);
-    size_t avail = rear - mFront;
-    if (avail == 0) {
+    if (mFifoReader == NULL) {
         return;
     }
-    size_t lost = 0;
-    if (avail > mSize) {
-        lost = avail - mSize;
-        mFront += lost;
-        avail = mSize;
-    }
-    size_t remaining = avail;       // remaining = number of bytes left to read
-    size_t front = mFront & (mSize - 1);
-    size_t read = mSize - front;    // read = number of bytes that have been read so far
-    if (read > remaining) {
-        read = remaining;
-    }
     // make a copy to avoid race condition with writer
-    uint8_t *copy = new uint8_t[avail];
-    // copy first part of circular buffer up until the wraparound point
-    memcpy(copy, &mShared->mBuffer[front], read);
-    if (front + read == mSize) {
-        if ((remaining -= read) > 0) {
-            // copy second part of circular buffer starting at beginning
-            memcpy(&copy[read], mShared->mBuffer, remaining);
-            read += remaining;
-            // remaining = 0 but not necessary
-        }
-    }
-    mFront += read;
+    size_t capacity = mFifo->capacity();
+
+    // TODO Stack-based allocation of large objects may fail.
+    //      Currently the log buffers are a page or two, which should be safe.
+    //      But if the log buffers ever get a lot larger,
+    //      then change this to allocate from heap when necessary.
+    static size_t kReasonableStackObjectSize = 32768;
+    ALOGW_IF(capacity > kReasonableStackObjectSize, "Stack-based allocation of object may fail");
+    uint8_t copy[capacity];
+
+    size_t lost;
+    ssize_t actual = mFifoReader->read(copy, capacity, NULL /*timeout*/, &lost);
+    ALOG_ASSERT(actual <= capacity);
+    size_t avail = actual > 0 ? (size_t) actual : 0;
     size_t i = avail;
     Event event;
     size_t length;
     struct timespec ts;
     time_t maxSec = -1;
-    while (i >= 3) {
+    while (i >= Entry::kOverhead) {
         length = copy[i - 1];
-        if (length + 3 > i || copy[i - length - 2] != length) {
+        if (length + Entry::kOverhead > i || copy[i - length - 2] != length) {
             break;
         }
-        event = (Event) copy[i - length - 3];
+        event = (Event) copy[i - length - Entry::kOverhead];
         if (event == EVENT_TIMESTAMP) {
             if (length != sizeof(struct timespec)) {
                 // corrupt
@@ -337,7 +340,7 @@
                 maxSec = ts.tv_sec;
             }
         }
-        i -= length + 3;
+        i -= length + Entry::kOverhead;
     }
     mFd = fd;
     mIndent = indent;
@@ -362,7 +365,7 @@
         event = (Event) copy[i];
         length = copy[i + 1];
         const void *data = &copy[i + 2];
-        size_t advance = length + 3;
+        size_t advance = length + Entry::kOverhead;
         switch (event) {
         case EVENT_STRING:
             body.appendFormat("%.*s", (int) length, (const char *) data);
@@ -376,7 +379,7 @@
             long deltaTotal = 0;
             size_t j = i;
             for (;;) {
-                j += sizeof(struct timespec) + 3;
+                j += sizeof(struct timespec) + 3 /*Entry::kOverhead?*/;
                 if (j >= avail || (Event) copy[j] != EVENT_TIMESTAMP) {
                     break;
                 }
@@ -398,7 +401,7 @@
                 deltaTotal += delta;
                 prevNsec = tsNext.tv_nsec;
             }
-            size_t n = (j - i) / (sizeof(struct timespec) + 3);
+            size_t n = (j - i) / (sizeof(struct timespec) + 3 /*Entry::kOverhead?*/);
             if (deferredTimestamp) {
                 dumpLine(timestamp, body);
                 deferredTimestamp = false;
@@ -432,8 +435,6 @@
     if (deferredTimestamp) {
         dumpLine(timestamp, body);
     }
-    // FIXME it would be more efficient to put a char mCopy[256] as a member variable of the dumper
-    delete[] copy;
 }
 
 void NBLog::Reader::dumpLine(const String8& timestamp, String8& body)
diff --git a/media/liboboe/Android.bp b/media/liboboe/Android.bp
index 0d22e65..bfcc049 100644
--- a/media/liboboe/Android.bp
+++ b/media/liboboe/Android.bp
@@ -24,4 +24,5 @@
     name: "liboboe.ndk",
     symbol_file: "liboboe.map.txt",
     first_version: "26",
+    unversioned_until: "current",
 }
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
old mode 100644
new mode 100755
index 0d61bf5..ac15687
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -3260,8 +3260,8 @@
         mOwner->writeInt32(0);
     } else {
         int32_t width, height;
-        bool success = mMeta->findInt32(kKeyWidth, &width);
-        success = success && mMeta->findInt32(kKeyHeight, &height);
+        bool success = mMeta->findInt32(kKeyDisplayWidth, &width);
+        success = success && mMeta->findInt32(kKeyDisplayHeight, &height);
         CHECK(success);
 
         mOwner->writeInt32(width << 16);   // 32-bit fixed-point value
@@ -3309,13 +3309,22 @@
 
 void MPEG4Writer::Track::writeMdhdBox(uint32_t now) {
     int64_t trakDurationUs = getDurationUs();
+    int64_t mdhdDuration = (trakDurationUs * mTimeScale + 5E5) / 1E6;
     mOwner->beginBox("mdhd");
-    mOwner->writeInt32(0);             // version=0, flags=0
-    mOwner->writeInt32(now);           // creation time
-    mOwner->writeInt32(now);           // modification time
-    mOwner->writeInt32(mTimeScale);    // media timescale
-    int32_t mdhdDuration = (trakDurationUs * mTimeScale + 5E5) / 1E6;
-    mOwner->writeInt32(mdhdDuration);  // use media timescale
+
+    if (mdhdDuration > UINT32_MAX) {
+        mOwner->writeInt32((1 << 24));            // version=1, flags=0
+        mOwner->writeInt64((int64_t)now);         // creation time
+        mOwner->writeInt64((int64_t)now);         // modification time
+        mOwner->writeInt32(mTimeScale);           // media timescale
+        mOwner->writeInt64(mdhdDuration);         // media timescale
+    } else {
+        mOwner->writeInt32(0);                      // version=0, flags=0
+        mOwner->writeInt32(now);                    // creation time
+        mOwner->writeInt32(now);                    // modification time
+        mOwner->writeInt32(mTimeScale);             // media timescale
+        mOwner->writeInt32((int32_t)mdhdDuration);  // use media timescale
+    }
     // Language follows the three letter standard ISO-639-2/T
     // 'e', 'n', 'g' for "English", for instance.
     // Each character is packed as the difference between its ASCII value and 0x60.
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index 24f0d20..9eca982 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -2623,14 +2623,7 @@
         info->mData->meta()->setInt32("csd", true);
     }
 
-    // synchronization boundary for getBufferAndFormat
-    sp<MediaCodecBuffer> buffer;
-    {
-        Mutex::Autolock al(mBufferLock);
-        info->mOwnedByClient = false;
-        buffer = info->mData;
-        info->mData.clear();
-    }
+    sp<MediaCodecBuffer> buffer = info->mData;
     status_t err = OK;
     if (mCrypto != NULL) {
         AString *errorDetailMsg;
@@ -2650,6 +2643,13 @@
         err = mBufferChannel->queueInputBuffer(buffer);
     }
 
+    if (err == OK) {
+        // synchronization boundary for getBufferAndFormat
+        Mutex::Autolock al(mBufferLock);
+        info->mOwnedByClient = false;
+        info->mData.clear();
+    }
+
     return err;
 }
 
diff --git a/media/libstagefright/MediaCodecSource.cpp b/media/libstagefright/MediaCodecSource.cpp
index de4d06f..5981b35 100644
--- a/media/libstagefright/MediaCodecSource.cpp
+++ b/media/libstagefright/MediaCodecSource.cpp
@@ -689,7 +689,9 @@
 
             sp<MediaCodecBuffer> inbuf;
             status_t err = mEncoder->getInputBuffer(bufferIndex, &inbuf);
-            if (err != OK || inbuf == NULL) {
+
+            if (err != OK || inbuf == NULL || inbuf->data() == NULL
+                    || mbuf->data() == NULL || mbuf->size() == 0) {
                 mbuf->release();
                 signalEOS();
                 break;
@@ -851,7 +853,8 @@
 
             sp<MediaCodecBuffer> outbuf;
             status_t err = mEncoder->getOutputBuffer(index, &outbuf);
-            if (err != OK || outbuf == NULL) {
+            if (err != OK || outbuf == NULL || outbuf->data() == NULL
+                || outbuf->size() == 0) {
                 signalEOS();
                 break;
             }
diff --git a/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp b/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp
index 9d9cd3b..5a47510 100644
--- a/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp
+++ b/media/libstagefright/codecs/amrnb/dec/src/a_refl.cpp
@@ -60,7 +60,7 @@
 ; INCLUDES
 ----------------------------------------------------------------------------*/
 #define LOG_TAG "a_refl"
-#include <android/log.h>
+#include <log/log.h>
 
 #include "a_refl.h"
 #include "typedef.h"
diff --git a/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp b/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp
index 5baa2a2..8393d79 100644
--- a/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp
+++ b/media/libstagefright/codecs/m4v_h263/dec/src/conceal.cpp
@@ -18,7 +18,7 @@
 
 #define LOG_TAG "conceal"
 
-#include "android/log.h"
+#include "log/log.h"
 
 #include "mp4dec_lib.h" /* video decoder function prototypes */
 #include "vlc_decode.h"
diff --git a/media/libstagefright/omx/hal/1.0/Conversion.h b/media/libstagefright/omx/hal/1.0/Conversion.h
index 44d2c84..d42e5bf 100644
--- a/media/libstagefright/omx/hal/1.0/Conversion.h
+++ b/media/libstagefright/omx/hal/1.0/Conversion.h
@@ -2,7 +2,6 @@
 #define ANDROID_HARDWARE_MEDIA_OMX_V1_0__CONVERSION_H
 
 #include <hidl/MQDescriptor.h>
-#include <hidl/Status.h>
 
 #include <unistd.h>
 #include <vector>
@@ -147,13 +146,13 @@
  */
 
 /**
- * \brief Convert `binder::Status` to `hardware::Status`.
+ * \brief Convert `binder::Status` to `Return<void>`.
  *
  * \param[in] l The source `binder::Status`.
- * \return The corresponding `hardware::Status`.
+ * \return The corresponding `Return<void>`.
  */
-// convert: ::android::binder::Status -> ::android::hardware::Status
-inline ::android::hardware::Status toHardwareStatus(
+// 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(
@@ -166,36 +165,17 @@
 }
 
 /**
- * \brief Convert `hardware::Status` to `binder::Status`.
+ * \brief Convert `Return<void>` to `binder::Status`.
  *
- * \param[in] t The source `hardware::Status`.
+ * \param[in] t The source `Return<void>`.
  * \return The corresponding `binder::Status`.
  */
-// convert: ::android::hardware::Status -> ::android::binder::Status
+// convert: Return<void> -> ::android::binder::Status
 inline ::android::binder::Status toBinderStatus(
-        ::android::hardware::Status const& t) {
-    if (t.exceptionCode() == ::android::hardware::Status::EX_SERVICE_SPECIFIC) {
-        return ::android::binder::Status::fromServiceSpecificError(
-                t.serviceSpecificErrorCode(),
-                t.exceptionMessage());
-    }
+        Return<void> const& t) {
     return ::android::binder::Status::fromExceptionCode(
-            t.exceptionCode(),
-            t.exceptionMessage());
-}
-
-/**
- * \brief Convert `hardware::Return<void>` to `binder::Status`.
- *
- * \param[in] t The source `hardware::Return<void>`.
- * \return The corresponding `binder::Status`.
- *
- * This function simply calls `toBinderStatus(::android::hardware::Status
- * const&)`.
- */
-// convert: ::android::hardware::Return<void> -> ::android::binder::Status
-inline ::android::binder::Status toBinderStatus(Return<void> const& t) {
-    return toBinderStatus(t.getStatus());
+            t.isOk() ? OK : UNKNOWN_ERROR,
+            t.description().c_str());
 }
 
 /**
@@ -215,8 +195,7 @@
  */
 // convert: Status -> status_t
 inline status_t toStatusT(Return<Status> const& t) {
-    return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) :
-            t.getStatus().transactionError();
+    return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) : UNKNOWN_ERROR;
 }
 
 /**
@@ -227,7 +206,7 @@
  */
 // convert: Return<void> -> status_t
 inline status_t toStatusT(Return<void> const& t) {
-    return t.getStatus().transactionError();
+    return t.isOk() ? OK : UNKNOWN_ERROR;
 }
 
 /**
diff --git a/media/ndk/Android.bp b/media/ndk/Android.bp
index 1ac1eeb..e4e3d8f 100644
--- a/media/ndk/Android.bp
+++ b/media/ndk/Android.bp
@@ -20,4 +20,5 @@
     name: "libmediandk.ndk",
     symbol_file: "libmediandk.map.txt",
     first_version: "21",
+    unversioned_until: "current",
 }
diff --git a/radio/IRadio.cpp b/radio/IRadio.cpp
index ebf3859..5bbe7cb 100644
--- a/radio/IRadio.cpp
+++ b/radio/IRadio.cpp
@@ -172,16 +172,11 @@
     virtual status_t getProgramInformation(struct radio_program_info *info)
     {
         Parcel data, reply;
-        if (info == NULL) {
+        if (info == nullptr || info->metadata == nullptr) {
             return BAD_VALUE;
         }
         radio_metadata_t *metadata = info->metadata;
         data.writeInterfaceToken(IRadio::getInterfaceDescriptor());
-        if (metadata != NULL) {
-            data.writeUint32(1);
-        } else {
-            data.writeUint32(0);
-        }
         status_t status = remote()->transact(GET_PROGRAM_INFORMATION, data, &reply);
         if (status == NO_ERROR) {
             status = (status_t)reply.readInt32();
@@ -190,13 +185,13 @@
                 // restore local metadata pointer
                 info->metadata = metadata;
 
-                uint32_t metatataSize = reply.readUint32();
-                if ((metadata != NULL) && (metatataSize != 0)) {
-                    radio_metadata_t *newMetadata = (radio_metadata_t *)malloc(metatataSize);
+                uint32_t metadataSize = reply.readUint32();
+                if (metadataSize != 0) {
+                    radio_metadata_t *newMetadata = (radio_metadata_t *)malloc(metadataSize);
                     if (newMetadata == NULL) {
                         return NO_MEMORY;
                     }
-                    reply.read(newMetadata, metatataSize);
+                    reply.read(newMetadata, metadataSize);
                     status = radio_metadata_add_metadata(&info->metadata, newMetadata);
                     free(newMetadata);
                 }
@@ -306,21 +301,17 @@
             CHECK_INTERFACE(IRadio, data, reply);
             struct radio_program_info info;
             status_t status;
-            // query metadata only if requested by remote side
-            if (data.readUint32() == 1) {
-                status = radio_metadata_allocate(&info.metadata, 0, 0);
-                if (status != NO_ERROR) {
-                    return status;
-                }
-            } else {
-                info.metadata = NULL;
+
+            status = radio_metadata_allocate(&info.metadata, 0, 0);
+            if (status != NO_ERROR) {
+                return status;
             }
             status = getProgramInformation(&info);
 
             reply->writeInt32(status);
             if (status == NO_ERROR) {
                 reply->write(&info, sizeof(struct radio_program_info));
-                if ((info.metadata != NULL) && (radio_metadata_get_count(info.metadata) > 0)) {
+                if (radio_metadata_get_count(info.metadata) > 0) {
                     size_t size = radio_metadata_get_size(info.metadata);
                     reply->writeUint32((uint32_t)size);
                     reply->write(info.metadata, size);
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index d08309b..e4b73c6 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -512,8 +512,11 @@
         return new NBLog::Writer();
     }
 success:
+    NBLog::Shared *sharedRawPtr = (NBLog::Shared *) shared->pointer();
+    new((void *) sharedRawPtr) NBLog::Shared(); // placement new here, but the corresponding
+                                                // explicit destructor not needed since it is POD
     mediaLogService->registerWriter(shared, size, name);
-    return new NBLog::Writer(size, shared);
+    return new NBLog::Writer(shared, size);
 }
 
 void AudioFlinger::unregisterWriter(const sp<NBLog::Writer>& writer)
diff --git a/services/audioflinger/AudioResampler.cpp b/services/audioflinger/AudioResampler.cpp
index 43624a0..8b7259d 100644
--- a/services/audioflinger/AudioResampler.cpp
+++ b/services/audioflinger/AudioResampler.cpp
@@ -22,8 +22,8 @@
 #include <stdlib.h>
 #include <sys/types.h>
 
-#include <android/log.h>
 #include <cutils/properties.h>
+#include <log/log.h>
 
 #include <audio_utils/primitives.h>
 #include "AudioResampler.h"
diff --git a/services/audioflinger/AudioResamplerCubic.cpp b/services/audioflinger/AudioResamplerCubic.cpp
index d27dce7..9fb6699 100644
--- a/services/audioflinger/AudioResamplerCubic.cpp
+++ b/services/audioflinger/AudioResamplerCubic.cpp
@@ -19,7 +19,8 @@
 #include <stdint.h>
 #include <string.h>
 #include <sys/types.h>
-#include <android/log.h>
+
+#include <log/log.h>
 
 #include "AudioResampler.h"
 #include "AudioResamplerCubic.h"
diff --git a/services/audioflinger/AudioResamplerDyn.cpp b/services/audioflinger/AudioResamplerDyn.cpp
index 21914b9..8f7b982 100644
--- a/services/audioflinger/AudioResamplerDyn.cpp
+++ b/services/audioflinger/AudioResamplerDyn.cpp
@@ -29,9 +29,10 @@
 #include <utils/Log.h>
 #include <audio_utils/primitives.h>
 
-#include "AudioResamplerFirOps.h" // USE_NEON and USE_INLINE_ASSEMBLY defined here
+#include "AudioResamplerFirOps.h" // USE_NEON, USE_SSE and USE_INLINE_ASSEMBLY defined here
 #include "AudioResamplerFirProcess.h"
 #include "AudioResamplerFirProcessNeon.h"
+#include "AudioResamplerFirProcessSSE.h"
 #include "AudioResamplerFirGen.h" // requires math.h
 #include "AudioResamplerDyn.h"
 
diff --git a/services/audioflinger/AudioResamplerFirOps.h b/services/audioflinger/AudioResamplerFirOps.h
index 2a26496..2e4cee3 100644
--- a/services/audioflinger/AudioResamplerFirOps.h
+++ b/services/audioflinger/AudioResamplerFirOps.h
@@ -36,6 +36,13 @@
 #include <arm_neon.h>
 #endif
 
+#if defined(__SSSE3__)  // Should be supported in x86 ABI for both 32 & 64-bit.
+#define USE_SSE (true)
+#include <tmmintrin.h>
+#else
+#define USE_SSE (false)
+#endif
+
 template<typename T, typename U>
 struct is_same
 {
@@ -119,7 +126,7 @@
 static inline
 int32_t mulAddRL(int left, uint32_t inRL, int16_t v, int32_t a)
 {
-#if USE_INLINE_ASSEMBLY
+#if 0 // USE_INLINE_ASSEMBLY Seems to fail with Clang b/34110890
     int32_t out;
     if (left) {
         asm( "smlabb %[out], %[v], %[inRL], %[a] \n"
@@ -142,7 +149,7 @@
 static inline
 int32_t mulAddRL(int left, uint32_t inRL, int32_t v, int32_t a)
 {
-#if USE_INLINE_ASSEMBLY
+#if 0 // USE_INLINE_ASSEMBLY Seems to fail with Clang b/34110890
     int32_t out;
     if (left) {
         asm( "smlawb %[out], %[v], %[inRL], %[a] \n"
diff --git a/services/audioflinger/AudioResamplerFirProcessNeon.h b/services/audioflinger/AudioResamplerFirProcessNeon.h
index 3de9edd..1ce76a8 100644
--- a/services/audioflinger/AudioResamplerFirProcessNeon.h
+++ b/services/audioflinger/AudioResamplerFirProcessNeon.h
@@ -155,8 +155,8 @@
             accum2 = vmlal_s16(accum2, vget_low_s16(negSamp.val[1]), vget_low_s16(negCoef));
             accum2 = vmlal_s16(accum2, vget_high_s16(negSamp.val[1]), vget_high_s16(negCoef));
             sP -= 16;
-        }
         } break;
+        }
     } while (count -= 8);
 
     // multiply by volume and save
diff --git a/services/audioflinger/AudioResamplerFirProcessSSE.h b/services/audioflinger/AudioResamplerFirProcessSSE.h
new file mode 100644
index 0000000..63ed052
--- /dev/null
+++ b/services/audioflinger/AudioResamplerFirProcessSSE.h
@@ -0,0 +1,215 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_AUDIO_RESAMPLER_FIR_PROCESS_SSE_H
+#define ANDROID_AUDIO_RESAMPLER_FIR_PROCESS_SSE_H
+
+namespace android {
+
+// depends on AudioResamplerFirOps.h, AudioResamplerFirProcess.h
+
+#if USE_SSE
+
+#define TO_STRING2(x) #x
+#define TO_STRING(x) TO_STRING2(x)
+// uncomment to print GCC version, may be relevant for intrinsic optimizations
+/* #pragma message ("GCC version: " TO_STRING(__GNUC__) \
+        "." TO_STRING(__GNUC_MINOR__) \
+        "." TO_STRING(__GNUC_PATCHLEVEL__)) */
+
+//
+// SSEx specializations are enabled for Process() and ProcessL() in AudioResamplerFirProcess.h
+//
+
+template <int CHANNELS, int STRIDE, bool FIXED>
+static inline void ProcessSSEIntrinsic(float* out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* sP,
+        const float* sN,
+        const float* volumeLR,
+        float lerpP,
+        const float* coefsP1,
+        const float* coefsN1)
+{
+    ALOG_ASSERT(count > 0 && (count & 7) == 0); // multiple of 8
+    COMPILE_TIME_ASSERT_FUNCTION_SCOPE(CHANNELS == 1 || CHANNELS == 2);
+
+    sP -= CHANNELS*(4-1);   // adjust sP for a loop iteration of four
+
+    __m128 interp;
+    if (!FIXED) {
+        interp = _mm_set1_ps(lerpP);
+    }
+
+    __m128 accL, accR;
+    accL = _mm_setzero_ps();
+    if (CHANNELS == 2) {
+        accR = _mm_setzero_ps();
+    }
+
+    do {
+        __m128 posCoef = _mm_load_ps(coefsP);
+        __m128 negCoef = _mm_load_ps(coefsN);
+        coefsP += 4;
+        coefsN += 4;
+
+        if (!FIXED) { // interpolate
+            __m128 posCoef1 = _mm_load_ps(coefsP1);
+            __m128 negCoef1 = _mm_load_ps(coefsN1);
+            coefsP1 += 4;
+            coefsN1 += 4;
+
+            // Calculate the final coefficient for interpolation
+            // posCoef = interp * (posCoef1 - posCoef) + posCoef
+            // negCoef = interp * (negCoef - negCoef1) + negCoef1
+            posCoef1 = _mm_sub_ps(posCoef1, posCoef);
+            negCoef = _mm_sub_ps(negCoef, negCoef1);
+
+            posCoef1 = _mm_mul_ps(posCoef1, interp);
+            negCoef = _mm_mul_ps(negCoef, interp);
+
+            posCoef = _mm_add_ps(posCoef1, posCoef);
+            negCoef = _mm_add_ps(negCoef, negCoef1);
+        }
+        switch (CHANNELS) {
+        case 1: {
+            __m128 posSamp = _mm_loadu_ps(sP);
+            __m128 negSamp = _mm_loadu_ps(sN);
+            sP -= 4;
+            sN += 4;
+
+            posSamp = _mm_shuffle_ps(posSamp, posSamp, 0x1B);
+            posSamp = _mm_mul_ps(posSamp, posCoef);
+            negSamp = _mm_mul_ps(negSamp, negCoef);
+
+            accL = _mm_add_ps(accL, posSamp);
+            accL = _mm_add_ps(accL, negSamp);
+        } break;
+        case 2: {
+            __m128 posSamp0 = _mm_loadu_ps(sP);
+            __m128 posSamp1 = _mm_loadu_ps(sP+4);
+            __m128 negSamp0 = _mm_loadu_ps(sN);
+            __m128 negSamp1 = _mm_loadu_ps(sN+4);
+            sP -= 8;
+            sN += 8;
+
+            // deinterleave everything and reverse the positives
+            __m128 posSampL = _mm_shuffle_ps(posSamp1, posSamp0, 0x22);
+            __m128 posSampR = _mm_shuffle_ps(posSamp1, posSamp0, 0x77);
+            __m128 negSampL = _mm_shuffle_ps(negSamp0, negSamp1, 0x88);
+            __m128 negSampR = _mm_shuffle_ps(negSamp0, negSamp1, 0xDD);
+
+            posSampL = _mm_mul_ps(posSampL, posCoef);
+            posSampR = _mm_mul_ps(posSampR, posCoef);
+            negSampL = _mm_mul_ps(negSampL, negCoef);
+            negSampR = _mm_mul_ps(negSampR, negCoef);
+
+            accL = _mm_add_ps(accL, posSampL);
+            accR = _mm_add_ps(accR, posSampR);
+            accL = _mm_add_ps(accL, negSampL);
+            accR = _mm_add_ps(accR, negSampR);
+        } break;
+        }
+    } while (count -= 4);
+
+    // multiply by volume and save
+    __m128 vLR = _mm_setzero_ps();
+    __m128 outSamp;
+    vLR = _mm_loadl_pi(vLR, reinterpret_cast<const __m64*>(volumeLR));
+    outSamp = _mm_loadl_pi(vLR, reinterpret_cast<__m64*>(out));
+
+    // combine and funnel down accumulator
+    __m128 outAccum = _mm_setzero_ps();
+    if (CHANNELS == 1) {
+        // duplicate accL to both L and R
+        outAccum = _mm_add_ps(accL, _mm_movehl_ps(accL, accL));
+        outAccum = _mm_add_ps(outAccum, _mm_shuffle_ps(outAccum, outAccum, 0x11));
+    } else if (CHANNELS == 2) {
+        // accR contains R, fold in
+        outAccum = _mm_hadd_ps(accL, accR);
+        outAccum = _mm_hadd_ps(outAccum, outAccum);
+    }
+
+    outAccum = _mm_mul_ps(outAccum, vLR);
+    outSamp = _mm_add_ps(outSamp, outAccum);
+    _mm_storel_pi(reinterpret_cast<__m64*>(out), outSamp);
+}
+
+template<>
+inline void ProcessL<1, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* sP,
+        const float* sN,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<1, 16, true>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            0 /*lerpP*/, NULL /*coefsP1*/, NULL /*coefsN1*/);
+}
+
+template<>
+inline void ProcessL<2, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* sP,
+        const float* sN,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<2, 16, true>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            0 /*lerpP*/, NULL /*coefsP1*/, NULL /*coefsN1*/);
+}
+
+template<>
+inline void Process<1, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* coefsP1,
+        const float* coefsN1,
+        const float* sP,
+        const float* sN,
+        float lerpP,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<1, 16, false>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            lerpP, coefsP1, coefsN1);
+}
+
+template<>
+inline void Process<2, 16>(float* const out,
+        int count,
+        const float* coefsP,
+        const float* coefsN,
+        const float* coefsP1,
+        const float* coefsN1,
+        const float* sP,
+        const float* sN,
+        float lerpP,
+        const float* const volumeLR)
+{
+    ProcessSSEIntrinsic<2, 16, false>(out, count, coefsP, coefsN, sP, sN, volumeLR,
+            lerpP, coefsP1, coefsN1);
+}
+
+#endif //USE_SSE
+
+} // namespace android
+
+#endif /*ANDROID_AUDIO_RESAMPLER_FIR_PROCESS_SSE_H*/
diff --git a/services/audioflinger/FastThreadDumpState.cpp b/services/audioflinger/FastThreadDumpState.cpp
index 9df5c4c..964a725 100644
--- a/services/audioflinger/FastThreadDumpState.cpp
+++ b/services/audioflinger/FastThreadDumpState.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <audio_utils/roundup.h>
 #include "FastThreadDumpState.h"
 
 namespace android {
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 724ce3c..abfbf0f 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3649,6 +3649,7 @@
         mFastMixer->run("FastMixer", PRIORITY_URGENT_AUDIO);
         pid_t tid = mFastMixer->getTid();
         sendPrioConfigEvent(getpid_cached, tid, kPriorityFastMixer);
+        stream()->setHalThreadPriority(kPriorityFastMixer);
 
 #ifdef AUDIO_WATCHDOG
         // create and start the watchdog
@@ -5911,6 +5912,7 @@
         mFastCapture->run("FastCapture", ANDROID_PRIORITY_URGENT_AUDIO);
         pid_t tid = mFastCapture->getTid();
         sendPrioConfigEvent(getpid_cached, tid, kPriorityFastCapture);
+        stream()->setHalThreadPriority(kPriorityFastCapture);
 #ifdef AUDIO_WATCHDOG
         // FIXME
 #endif
diff --git a/services/audioflinger/tests/build_and_run_all_unit_tests.sh b/services/audioflinger/tests/build_and_run_all_unit_tests.sh
index 7f4d456..9a71096 100755
--- a/services/audioflinger/tests/build_and_run_all_unit_tests.sh
+++ b/services/audioflinger/tests/build_and_run_all_unit_tests.sh
@@ -15,7 +15,9 @@
 echo "waiting for device"
 adb root && adb wait-for-device remount
 adb push $OUT/system/lib/libaudioresampler.so /system/lib
-adb push $OUT/data/nativetest/resampler_tests /system/bin
+adb push $OUT/system/lib64/libaudioresampler.so /system/lib64
+adb push $OUT/data/nativetest/resampler_tests/resampler_tests /data/nativetest/resampler_tests/resampler_tests
+adb push $OUT/data/nativetest64/resampler_tests/resampler_tests /data/nativetest64/resampler_tests/resampler_tests
 
 sh $ANDROID_BUILD_TOP/frameworks/av/services/audioflinger/tests/run_all_unit_tests.sh
 
diff --git a/services/audioflinger/tests/resampler_tests.cpp b/services/audioflinger/tests/resampler_tests.cpp
index 406b960..77a265f 100644
--- a/services/audioflinger/tests/resampler_tests.cpp
+++ b/services/audioflinger/tests/resampler_tests.cpp
@@ -39,6 +39,17 @@
 #include "AudioResampler.h"
 #include "test_utils.h"
 
+template <typename T>
+static void printData(T *data, size_t size) {
+    const size_t stride = 8;
+    for (size_t i = 0; i < size; ) {
+        for (size_t j = 0; j < stride && i < size; ++j) {
+            std::cout << data[i++] << ' ';  // extra space before newline
+        }
+        std::cout << '\n'; // or endl
+    }
+}
+
 void resample(int channels, void *output,
         size_t outputFrames, const std::vector<size_t> &outputIncr,
         android::AudioBufferProvider *provider, android::AudioResampler *resampler)
@@ -91,7 +102,7 @@
 
     // calculate the output size
     size_t outputFrames = ((int64_t) provider.getNumFrames() * outputFreq) / inputFreq;
-    size_t outputFrameSize = channels * (useFloat ? sizeof(float) : sizeof(int32_t));
+    size_t outputFrameSize = (channels == 1 ? 2 : channels) * (useFloat ? sizeof(float) : sizeof(int32_t));
     size_t outputSize = outputFrameSize * outputFrames;
     outputSize &= ~7;
 
@@ -106,7 +117,7 @@
     // set up the reference run
     std::vector<size_t> refIncr;
     refIncr.push_back(outputFrames);
-    void* reference = malloc(outputSize);
+    void* reference = calloc(outputFrames, outputFrameSize);
     resample(channels, reference, outputFrames, refIncr, &provider, resampler);
 
     provider.reset();
@@ -127,7 +138,7 @@
     outIncr.push_back(1);
     outIncr.push_back(2);
     outIncr.push_back(3);
-    void* test = malloc(outputSize);
+    void* test = calloc(outputFrames, outputFrameSize);
     inputIncr.push_back(1);
     inputIncr.push_back(3);
     provider.setIncr(inputIncr);
@@ -177,7 +188,7 @@
 
     // calculate the output size
     size_t outputFrames = ((int64_t) provider.getNumFrames() * outputFreq) / inputFreq;
-    size_t outputFrameSize = channels * sizeof(TO);
+    size_t outputFrameSize = (channels == 1 ? 2 : channels) * sizeof(TO);
     size_t outputSize = outputFrameSize * outputFrames;
     outputSize &= ~7;
 
@@ -194,7 +205,7 @@
     // set up the reference run
     std::vector<size_t> refIncr;
     refIncr.push_back(outputFrames);
-    void* reference = malloc(outputSize);
+    void* reference = calloc(outputFrames, outputFrameSize);
     resample(channels, reference, outputFrames, refIncr, &provider, resampler);
 
     TO *out = reinterpret_cast<TO *>(reference);
@@ -204,6 +215,8 @@
     const unsigned stopbandFrame = stopband * outputFreq / 1000.;
 
     // check each channel separately
+    if (channels == 1) channels = 2; // workaround (mono duplicates output channel)
+
     for (size_t i = 0; i < channels; ++i) {
         double passbandEnergy = signalEnergy(out, out + passbandFrame * channels, channels);
         double stopbandEnergy = signalEnergy(out + stopbandFrame * channels,
@@ -331,6 +344,34 @@
     }
 }
 
+TEST(audioflinger_resampler, stopbandresponse_integer_mono) {
+    // not all of these may work (old resamplers fail on downsampling)
+    static const enum android::AudioResampler::src_quality kQualityArray[] = {
+            //android::AudioResampler::LOW_QUALITY,
+            //android::AudioResampler::MED_QUALITY,
+            //android::AudioResampler::HIGH_QUALITY,
+            //android::AudioResampler::VERY_HIGH_QUALITY,
+            android::AudioResampler::DYN_LOW_QUALITY,
+            android::AudioResampler::DYN_MED_QUALITY,
+            android::AudioResampler::DYN_HIGH_QUALITY,
+    };
+
+    // in this test we assume a maximum transition band between 12kHz and 20kHz.
+    // there must be at least 60dB relative attenuation between stopband and passband.
+    for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
+        testStopbandDownconversion<int16_t, int32_t>(
+                1, 48000, 32000, 12000, 20000, kQualityArray[i]);
+    }
+
+    // in this test we assume a maximum transition band between 7kHz and 15kHz.
+    // there must be at least 60dB relative attenuation between stopband and passband.
+    // (the weird ratio triggers interpolative resampling)
+    for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
+        testStopbandDownconversion<int16_t, int32_t>(
+                1, 48000, 22101, 7000, 15000, kQualityArray[i]);
+    }
+}
+
 TEST(audioflinger_resampler, stopbandresponse_integer_multichannel) {
     // not all of these may work (old resamplers fail on downsampling)
     static const enum android::AudioResampler::src_quality kQualityArray[] = {
@@ -387,6 +428,34 @@
     }
 }
 
+TEST(audioflinger_resampler, stopbandresponse_float_mono) {
+    // not all of these may work (old resamplers fail on downsampling)
+    static const enum android::AudioResampler::src_quality kQualityArray[] = {
+            //android::AudioResampler::LOW_QUALITY,
+            //android::AudioResampler::MED_QUALITY,
+            //android::AudioResampler::HIGH_QUALITY,
+            //android::AudioResampler::VERY_HIGH_QUALITY,
+            android::AudioResampler::DYN_LOW_QUALITY,
+            android::AudioResampler::DYN_MED_QUALITY,
+            android::AudioResampler::DYN_HIGH_QUALITY,
+    };
+
+    // in this test we assume a maximum transition band between 12kHz and 20kHz.
+    // there must be at least 60dB relative attenuation between stopband and passband.
+    for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
+        testStopbandDownconversion<float, float>(
+                1, 48000, 32000, 12000, 20000, kQualityArray[i]);
+    }
+
+    // in this test we assume a maximum transition band between 7kHz and 15kHz.
+    // there must be at least 60dB relative attenuation between stopband and passband.
+    // (the weird ratio triggers interpolative resampling)
+    for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
+        testStopbandDownconversion<float, float>(
+                1, 48000, 22101, 7000, 15000, kQualityArray[i]);
+    }
+}
+
 TEST(audioflinger_resampler, stopbandresponse_float_multichannel) {
     // not all of these may work (old resamplers fail on downsampling)
     static const enum android::AudioResampler::src_quality kQualityArray[] = {
diff --git a/services/audioflinger/tests/run_all_unit_tests.sh b/services/audioflinger/tests/run_all_unit_tests.sh
index 113f39e..15a94c2 100755
--- a/services/audioflinger/tests/run_all_unit_tests.sh
+++ b/services/audioflinger/tests/run_all_unit_tests.sh
@@ -8,5 +8,5 @@
 echo "waiting for device"
 adb root && adb wait-for-device remount
 
-#adb shell /system/bin/resampler_tests
 adb shell /data/nativetest/resampler_tests/resampler_tests
+adb shell /data/nativetest64/resampler_tests/resampler_tests
diff --git a/services/audioflinger/tests/test_utils.h b/services/audioflinger/tests/test_utils.h
index 283c768..b61a929 100644
--- a/services/audioflinger/tests/test_utils.h
+++ b/services/audioflinger/tests/test_utils.h
@@ -17,6 +17,12 @@
 #ifndef ANDROID_AUDIO_TEST_UTILS_H
 #define ANDROID_AUDIO_TEST_UTILS_H
 
+#ifndef LOG_TAG
+#define LOG_TAG "test_utils"
+#endif
+
+#include <log/log.h>
+
 #include <audio_utils/sndfile.h>
 
 #ifndef ARRAY_SIZE
diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index ef2e8d9..d1edb56 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -28,6 +28,7 @@
     common/Camera2ClientBase.cpp \
     common/CameraDeviceBase.cpp \
     common/CameraModule.cpp \
+    common/CameraProviderManager.cpp \
     common/FrameProcessorBase.cpp \
     api1/CameraClient.cpp \
     api1/Camera2Client.cpp \
@@ -63,25 +64,36 @@
     libmedia \
     libmediautils \
     libcamera_client \
+    libcamera_metadata \
     libgui \
     libhardware \
-    libcamera_metadata \
+    libhidlbase \
+    libhidltransport \
     libjpeg \
     libmemunreachable \
-    android.hardware.camera.common@1.0
+    android.hardware.camera.common@1.0 \
+    android.hardware.camera.provider@2.4 \
+    android.hardware.camera.device@1.0 \
+    android.hardware.camera.device@3.2 \
+    android.hidl.manager@1.0
 
 LOCAL_EXPORT_SHARED_LIBRARY_HEADERS := libbinder libcamera_client
 
 LOCAL_C_INCLUDES += \
     system/media/private/camera/include \
-    frameworks/native/include/media/openmax \
-    external/jpeg
+    frameworks/native/include/media/openmax
 
 LOCAL_EXPORT_C_INCLUDE_DIRS := \
     frameworks/av/services/camera/libcameraservice
 
 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/CameraFlashlight.cpp b/services/camera/libcameraservice/CameraFlashlight.cpp
index 6314ba5..07d88f6 100644
--- a/services/camera/libcameraservice/CameraFlashlight.cpp
+++ b/services/camera/libcameraservice/CameraFlashlight.cpp
@@ -36,10 +36,18 @@
 // CameraFlashlight implementation begins
 // used by camera service to control flashflight.
 /////////////////////////////////////////////////////////////////////
-CameraFlashlight::CameraFlashlight(CameraModule& cameraModule,
-        const camera_module_callbacks_t& callbacks) :
-        mCameraModule(&cameraModule),
-        mCallbacks(&callbacks),
+CameraFlashlight::CameraFlashlight(CameraModule* cameraModule,
+        camera_module_callbacks_t* callbacks) :
+        mCameraModule(cameraModule),
+        mCallbacks(callbacks),
+        mFlashlightMapInitialized(false) {
+}
+
+CameraFlashlight::CameraFlashlight(sp<CameraProviderManager> providerManager,
+        camera_module_callbacks_t* callbacks) :
+        mCameraModule(nullptr),
+        mProviderManager(providerManager),
+        mCallbacks(callbacks),
         mFlashlightMapInitialized(false) {
 }
 
@@ -55,8 +63,10 @@
 
     status_t res = OK;
 
-    if (mCameraModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4) {
-        mFlashControl = new ModuleFlashControl(*mCameraModule, *mCallbacks);
+    if (mCameraModule == nullptr) {
+        mFlashControl = new ProviderFlashControl(mProviderManager);
+    } else if (mCameraModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4) {
+        mFlashControl = new ModuleFlashControl(*mCameraModule);
         if (mFlashControl == NULL) {
             ALOGV("%s: cannot create flash control for module api v2.4+",
                      __FUNCTION__);
@@ -69,7 +79,7 @@
                     CAMERA_MODULE_API_VERSION_2_0) {
             camera_info info;
             res = mCameraModule->getCameraInfo(
-                    atoi(String8(cameraId).string()), &info);
+                    atoi(cameraId.string()), &info);
             if (res) {
                 ALOGE("%s: failed to get camera info for camera %s",
                         __FUNCTION__, cameraId.string());
@@ -157,15 +167,27 @@
 status_t CameraFlashlight::findFlashUnits() {
     Mutex::Autolock l(mLock);
     status_t res;
-    int32_t numCameras = mCameraModule->getNumberOfCameras();
+
+    std::vector<String8> cameraIds;
+    if (mCameraModule) {
+        cameraIds.resize(mCameraModule->getNumberOfCameras());
+        for (size_t i = 0; i < cameraIds.size(); i++) {
+            cameraIds[i] = String8::format("%zu", i);
+        }
+    } else {
+        // No module, must be provider
+        std::vector<std::string> ids = mProviderManager->getCameraDeviceIds();
+        cameraIds.resize(ids.size());
+        for (size_t i = 0; i < cameraIds.size(); i++) {
+            cameraIds[i] = String8(ids[i].c_str());
+        }
+    }
 
     mHasFlashlightMap.clear();
     mFlashlightMapInitialized = false;
 
-    for (int32_t i = 0; i < numCameras; i++) {
+    for (auto &id : cameraIds) {
         bool hasFlash = false;
-        String8 id = String8::format("%d", i);
-
         res = createFlashlightControl(id);
         if (res) {
             ALOGE("%s: failed to create flash control for %s", __FUNCTION__,
@@ -224,7 +246,7 @@
         return NO_INIT;
     }
 
-    if (mCameraModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_4) {
+    if (mCameraModule && mCameraModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_4) {
         // framework is going to open a camera device, all flash light control
         // should be closed for backward compatible support.
         mFlashControl.clear();
@@ -274,7 +296,7 @@
     if (mOpenedCameraIds.size() != 0)
         return OK;
 
-    if (mCameraModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_4) {
+    if (mCameraModule && mCameraModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_4) {
         // notify torch available for all cameras with a flash
         int numCameras = mCameraModule->getNumberOfCameras();
         for (int i = 0; i < numCameras; i++) {
@@ -298,10 +320,35 @@
 // ModuleFlashControl implementation begins
 // Flash control for camera module v2.4 and above.
 /////////////////////////////////////////////////////////////////////
-ModuleFlashControl::ModuleFlashControl(CameraModule& cameraModule,
-        const camera_module_callbacks_t& callbacks) :
+ProviderFlashControl::ProviderFlashControl(sp<CameraProviderManager> providerManager) :
+        mProviderManager(providerManager) {
+}
+
+ProviderFlashControl::~ProviderFlashControl() {
+}
+
+status_t ProviderFlashControl::hasFlashUnit(const String8& cameraId, bool *hasFlash) {
+    if (!hasFlash) {
+        return BAD_VALUE;
+    }
+    *hasFlash = mProviderManager->hasFlashUnit(cameraId.string());
+    return OK;
+}
+
+status_t ProviderFlashControl::setTorchMode(const String8& cameraId, bool enabled) {
+    ALOGV("%s: set camera %s torch mode to %d", __FUNCTION__,
+            cameraId.string(), enabled);
+
+    return mProviderManager->setTorchMode(cameraId.string(), enabled);
+}
+// ProviderFlashControl implementation ends
+
+/////////////////////////////////////////////////////////////////////
+// ModuleFlashControl implementation begins
+// Flash control for camera module v2.4 and above.
+/////////////////////////////////////////////////////////////////////
+ModuleFlashControl::ModuleFlashControl(CameraModule& cameraModule) :
         mCameraModule(&cameraModule) {
-    (void) callbacks;
 }
 
 ModuleFlashControl::~ModuleFlashControl() {
@@ -477,7 +524,7 @@
     }
 
     sp<CameraDeviceBase> device =
-            new Camera3Device(atoi(cameraId.string()));
+            new Camera3Device(cameraId);
     if (device == NULL) {
         return NO_MEMORY;
     }
diff --git a/services/camera/libcameraservice/CameraFlashlight.h b/services/camera/libcameraservice/CameraFlashlight.h
index 59fc87d..b7c7690 100644
--- a/services/camera/libcameraservice/CameraFlashlight.h
+++ b/services/camera/libcameraservice/CameraFlashlight.h
@@ -17,14 +17,17 @@
 #ifndef ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H
 #define ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H
 
-#include "hardware/camera_common.h"
-#include "utils/KeyedVector.h"
-#include "utils/SortedVector.h"
-#include "gui/GLConsumer.h"
-#include "gui/Surface.h"
+#include <gui/GLConsumer.h>
+#include <gui/Surface.h>
+#include <hardware/camera_common.h>
+#include <utils/KeyedVector.h>
+#include <utils/SortedVector.h>
+#include "common/CameraProviderManager.h"
+#include "common/CameraModule.h"
 #include "common/CameraDeviceBase.h"
 #include "device1/CameraHardwareInterface.h"
 
+
 namespace android {
 
 /**
@@ -52,8 +55,10 @@
  */
 class CameraFlashlight : public virtual VirtualLightRefBase {
     public:
-        CameraFlashlight(CameraModule& cameraModule,
-                const camera_module_callbacks_t& callbacks);
+        CameraFlashlight(CameraModule* cameraModule,
+                camera_module_callbacks_t* callbacks);
+        CameraFlashlight(sp<CameraProviderManager> providerManager,
+                camera_module_callbacks_t* callbacks);
         virtual ~CameraFlashlight();
 
         // Find all flash units. This must be called before other methods. All
@@ -88,7 +93,10 @@
         bool hasFlashUnitLocked(const String8& cameraId);
 
         sp<FlashControlBase> mFlashControl;
+
         CameraModule *mCameraModule;
+        sp<CameraProviderManager> mProviderManager;
+
         const camera_module_callbacks_t *mCallbacks;
         SortedVector<String8> mOpenedCameraIds;
 
@@ -100,12 +108,29 @@
 };
 
 /**
+ * Flash control for camera provider v2.4 and above.
+ */
+class ProviderFlashControl : public FlashControlBase {
+    public:
+        ProviderFlashControl(sp<CameraProviderManager> providerManager);
+        virtual ~ProviderFlashControl();
+
+        // FlashControlBase
+        status_t hasFlashUnit(const String8& cameraId, bool *hasFlash);
+        status_t setTorchMode(const String8& cameraId, bool enabled);
+
+    private:
+        sp<CameraProviderManager> mProviderManager;
+
+        Mutex mLock;
+};
+
+/**
  * Flash control for camera module v2.4 and above.
  */
 class ModuleFlashControl : public FlashControlBase {
     public:
-        ModuleFlashControl(CameraModule& cameraModule,
-                const camera_module_callbacks_t& callbacks);
+        ModuleFlashControl(CameraModule& cameraModule);
         virtual ~ModuleFlashControl();
 
         // FlashControlBase
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index 1d9ccb1..c92092c 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -18,6 +18,12 @@
 #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>
@@ -32,6 +38,7 @@
 #include <android/hardware/ICameraClient.h>
 
 #include <android-base/macros.h>
+#include <android-base/parseint.h>
 #include <binder/AppOpsManager.h>
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
@@ -54,8 +61,12 @@
 #include <private/android_filesystem_config.h>
 #include <system/camera_vendor_tags.h>
 #include <system/camera_metadata.h>
+
 #include <system/camera.h>
 
+#include <android/hidl/manager/1.0/IServiceManager.h>
+#include <hidl/ServiceManagement.h>
+
 #include "CameraService.h"
 #include "api1/CameraClient.h"
 #include "api1/Camera2Client.h"
@@ -162,16 +173,11 @@
 
 // ----------------------------------------------------------------------------
 
-// This is ugly and only safe if we never re-create the CameraService, but
-// should be ok for now.
-static CameraService *gCameraService;
-
 CameraService::CameraService() :
         mEventLog(DEFAULT_EVENT_LOG_LENGTH),
         mNumberOfCameras(0), mNumberOfNormalCameras(0),
-        mSoundRef(0), mModule(nullptr) {
+        mSoundRef(0), mInitialized(false), mModule(nullptr) {
     ALOGI("CameraService started (pid=%d)", getpid());
-    gCameraService = this;
 
     this->camera_device_status_change = android::camera_device_status_change;
     this->torch_mode_status_change = android::torch_mode_status_change;
@@ -190,13 +196,27 @@
     notifier.noteResetCamera();
     notifier.noteResetFlashlight();
 
+    status_t res = INVALID_OPERATION;
+    if (USE_HIDL) {
+        res = enumerateProviders();
+    } else {
+        res = loadLegacyHalModule();
+    }
+    if (res == OK) {
+        mInitialized = true;
+    }
+
+    CameraService::pingCameraServiceProxy();
+}
+
+status_t CameraService::loadLegacyHalModule() {
     camera_module_t *rawModule;
     int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID,
             (const hw_module_t **)&rawModule);
     if (err < 0) {
         ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err));
         logServiceError("Could not load camera HAL module", err);
-        return;
+        return INVALID_OPERATION;
     }
 
     mModule = new CameraModule(rawModule);
@@ -208,7 +228,7 @@
 
         delete mModule;
         mModule = nullptr;
-        return;
+        return INVALID_OPERATION;
     }
     ALOGI("Loaded \"%s\" camera module", mModule->getModuleName());
 
@@ -222,7 +242,7 @@
         setUpVendorTags();
     }
 
-    mFlashlight = new CameraFlashlight(*mModule, *this);
+    mFlashlight = new CameraFlashlight(mModule, this);
     status_t res = mFlashlight->findFlashUnits();
     if (res) {
         // impossible because we haven't open any camera devices.
@@ -250,7 +270,7 @@
             if (checkCameraCapabilities(i, info, &latestStrangeCameraId) != OK) {
                 delete mModule;
                 mModule = nullptr;
-                return;
+                return INVALID_OPERATION;
             }
         }
 
@@ -288,9 +308,59 @@
         mModule->setCallbacks(this);
     }
 
-    CameraService::pingCameraServiceProxy();
+    return OK;
 }
 
+status_t CameraService::enumerateProviders() {
+    mCameraProviderManager = new CameraProviderManager();
+    status_t res;
+    res = mCameraProviderManager->initialize(this);
+    if (res != OK) {
+        ALOGE("%s: Unable to initialize camera provider manager: %s (%d)",
+                __FUNCTION__, strerror(-res), res);
+        return res;
+    }
+
+    mNumberOfCameras = mCameraProviderManager->getCameraCount();
+    mNumberOfNormalCameras = mCameraProviderManager->getStandardCameraCount();
+
+    // TODO: Set up vendor tags
+
+    mFlashlight = new CameraFlashlight(mCameraProviderManager, this);
+    res = mFlashlight->findFlashUnits();
+    if (res != OK) {
+        ALOGE("Failed to enumerate flash units: %s (%d)", strerror(-res), res);
+    }
+
+    // TODO: Verify device versions are in support
+
+    for (auto& cameraId : mCameraProviderManager->getCameraDeviceIds()) {
+        hardware::camera::common::V1_0::CameraResourceCost cost;
+        res = mCameraProviderManager->getResourceCost(cameraId, &cost);
+        if (res != OK) {
+            ALOGE("Failed to query device resource cost: %s (%d)", strerror(-res), res);
+            continue;
+        }
+        std::set<String8> conflicting;
+        for (size_t i = 0; i < cost.conflictingDevices.size(); i++) {
+            conflicting.emplace(String8(cost.conflictingDevices[i].c_str()));
+        }
+        String8 id8 = String8(cameraId.c_str());
+
+        Mutex::Autolock lock(mCameraStatesLock);
+        mCameraStates.emplace(id8,
+            std::make_shared<CameraState>(id8, cost.resourceCost, conflicting));
+
+        if (mFlashlight->hasFlashUnit(id8)) {
+            mTorchStatusMap.add(id8,
+                TorchModeStatus::AVAILABLE_OFF);
+        }
+    }
+
+    return OK;
+}
+
+
 sp<ICameraServiceProxy> CameraService::getCameraServiceProxy() {
     sp<ICameraServiceProxy> proxyBinder = nullptr;
 #ifndef __BRILLO__
@@ -318,7 +388,6 @@
         mModule = nullptr;
     }
     VendorTagDescriptor::clearGlobalVendorTagDescriptor();
-    gCameraService = nullptr;
 }
 
 void CameraService::onDeviceStatusChanged(const String8& id,
@@ -473,7 +542,7 @@
 Status CameraService::getCameraInfo(int cameraId,
         CameraInfo* cameraInfo) {
     ATRACE_CALL();
-    if (!mModule) {
+    if (!mInitialized) {
         return STATUS_ERROR(ERROR_DISCONNECTED,
                 "Camera subsystem is not available");
     }
@@ -483,34 +552,42 @@
                 "CameraId is not valid");
     }
 
-    struct camera_info info;
-    Status rc = filterGetInfoErrorCode(
-        mModule->getCameraInfo(cameraId, &info));
+    Status ret = Status::ok();
+    if (mModule != nullptr) {
+        struct camera_info info;
+        ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info));
 
-    if (rc.isOk()) {
-        cameraInfo->facing = info.facing;
-        cameraInfo->orientation = info.orientation;
-        // CameraInfo is for android.hardware.Camera which does not
-        // support external camera facing. The closest approximation would be
-        // front camera.
-        if (cameraInfo->facing == CAMERA_FACING_EXTERNAL) {
-            cameraInfo->facing = CAMERA_FACING_FRONT;
+        if (ret.isOk()) {
+            cameraInfo->facing = info.facing;
+            cameraInfo->orientation = info.orientation;
+            // CameraInfo is for android.hardware.Camera which does not
+            // support external camera facing. The closest approximation would be
+            // front camera.
+            if (cameraInfo->facing == CAMERA_FACING_EXTERNAL) {
+                cameraInfo->facing = hardware::CAMERA_FACING_FRONT;
+            }
         }
-    }
-    return rc;
-}
-
-int CameraService::cameraIdToInt(const String8& cameraId) {
-    errno = 0;
-    size_t pos = 0;
-    int ret = stoi(std::string{cameraId.string()}, &pos);
-    if (errno != 0 || pos != cameraId.size()) {
-        return -1;
+    } else {
+        status_t err = mCameraProviderManager->getCameraInfo(std::to_string(cameraId), cameraInfo);
+        if (err != OK) {
+            ret = STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
+                    "Error retrieving camera info from device %d: %s (%d)", cameraId,
+                    strerror(-err), err);
+        }
     }
     return ret;
 }
 
-Status CameraService::getCameraCharacteristics(const String16& id,
+int CameraService::cameraIdToInt(const String8& cameraId) {
+    int id;
+    bool success = base::ParseInt(cameraId.string(), &id, 0);
+    if (!success) {
+        return -1;
+    }
+    return id;
+}
+
+Status CameraService::getCameraCharacteristics(const String16& cameraId,
         CameraMetadata* cameraInfo) {
     ATRACE_CALL();
     if (!cameraInfo) {
@@ -518,32 +595,42 @@
         return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "cameraInfo is NULL");
     }
 
-    if (!mModule) {
-        ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__);
+    if (!mInitialized) {
+        ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
         return STATUS_ERROR(ERROR_DISCONNECTED,
                 "Camera subsystem is not available");;
     }
 
-    int cameraId = cameraIdToInt(String8(id));
+    Status ret{};
 
-    if (cameraId < 0 || cameraId >= mNumberOfCameras) {
-        ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId);
-        return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
-                "Invalid camera id: %d", cameraId);
-    }
+    if (mModule != nullptr) {
+        int id = cameraIdToInt(String8(cameraId));
 
-    int facing;
-    Status ret;
-    if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 ||
-            getDeviceVersion(cameraId, &facing) < CAMERA_DEVICE_API_VERSION_3_0) {
-        return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, "Can't get camera characteristics"
-                " for devices with HAL version < 3.0, %d is version %x", cameraId,
-                getDeviceVersion(cameraId, &facing));
-    }
-    struct camera_info info;
-    ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info));
-    if (ret.isOk()) {
-        *cameraInfo = info.static_camera_characteristics;
+        if (id < 0 || id >= mNumberOfCameras) {
+            ALOGE("%s: Invalid camera id: %d", __FUNCTION__, id);
+            return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
+                    "Invalid camera id: %d", id);
+        }
+
+        int version = getDeviceVersion(String8(cameraId));
+        if (version < CAMERA_DEVICE_API_VERSION_3_0) {
+            return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, "Can't get camera characteristics"
+                    " for devices with HAL version < 3.0, %d is version %x", id, version);
+        }
+
+        struct camera_info info;
+        ret = filterGetInfoErrorCode(mModule->getCameraInfo(id, &info));
+        if (ret.isOk()) {
+            *cameraInfo = info.static_camera_characteristics;
+        }
+    } else {
+        status_t res = mCameraProviderManager->getCameraCharacteristics(
+                String16::std_string(cameraId), cameraInfo);
+        if (res != OK) {
+            return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to retrieve camera "
+                    "characteristics for device %s: %s (%d)", String8(cameraId).string(),
+                    strerror(-res), res);
+        }
     }
 
     return ret;
@@ -584,8 +671,8 @@
         /*out*/
         hardware::camera2::params::VendorTagDescriptor* desc) {
     ATRACE_CALL();
-    if (!mModule) {
-        ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__);
+    if (!mInitialized) {
+        ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
         return STATUS_ERROR(ERROR_DISCONNECTED, "Camera subsystem not available");
     }
     sp<VendorTagDescriptor> globalDescriptor = VendorTagDescriptor::getGlobalVendorTagDescriptor();
@@ -595,24 +682,37 @@
     return Status::ok();
 }
 
-int CameraService::getDeviceVersion(int cameraId, int* facing) {
+int CameraService::getDeviceVersion(const String8& cameraId, int* facing) {
     ATRACE_CALL();
     struct camera_info info;
-    if (mModule->getCameraInfo(cameraId, &info) != OK) {
-        return -1;
-    }
 
-    int deviceVersion;
-    if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) {
-        deviceVersion = info.device_version;
+    int deviceVersion = 0;
+
+    if (mModule != nullptr) {
+        int id = cameraIdToInt(cameraId);
+        if (id < 0) return -1;
+
+        if (mModule->getCameraInfo(id, &info) != OK) {
+            return -1;
+        }
+
+        if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) {
+            deviceVersion = info.device_version;
+        } else {
+            deviceVersion = CAMERA_DEVICE_API_VERSION_1_0;
+        }
+
+        if (facing) {
+            *facing = info.facing;
+        }
     } else {
-        deviceVersion = CAMERA_DEVICE_API_VERSION_1_0;
+        status_t res;
+        hardware::hidl_version maxVersion{0,0};
+        res = mCameraProviderManager->getHighestSupportedVersion(String8::std_string(cameraId),
+                &maxVersion);
+        if (res == NAME_NOT_FOUND) return -1;
+        deviceVersion = HARDWARE_DEVICE_API_VERSION(maxVersion.get_major(), maxVersion.get_minor());
     }
-
-    if (facing) {
-        *facing = info.facing;
-    }
-
     return deviceVersion;
 }
 
@@ -635,6 +735,8 @@
 
 bool CameraService::setUpVendorTags() {
     ATRACE_CALL();
+    if (mModule == nullptr) return false;
+
     vendor_tag_ops_t vOps = vendor_tag_ops_t();
 
     // Check if vendor operations have been implemented
@@ -671,7 +773,7 @@
 }
 
 Status CameraService::makeClient(const sp<CameraService>& cameraService,
-        const sp<IInterface>& cameraCb, const String16& packageName, int cameraId,
+        const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId,
         int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode,
         int halVersion, int deviceVersion, apiLevel effectiveApiLevel,
         /*out*/sp<BasicClient>* client) {
@@ -683,13 +785,13 @@
           case CAMERA_DEVICE_API_VERSION_1_0:
             if (effectiveApiLevel == API_1) {  // Camera1 API route
                 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get());
-                *client = new CameraClient(cameraService, tmp, packageName, cameraId, facing,
-                        clientPid, clientUid, getpid(), legacyMode);
+                *client = new CameraClient(cameraService, tmp, packageName, cameraIdToInt(cameraId),
+                        facing, clientPid, clientUid, getpid(), legacyMode);
             } else { // Camera2 API route
                 ALOGW("Camera using old HAL version: %d", deviceVersion);
                 return STATUS_ERROR_FMT(ERROR_DEPRECATED_HAL,
-                        "Camera device \"%d\" HAL version %d does not support camera2 API",
-                        cameraId, deviceVersion);
+                        "Camera device \"%s\" HAL version %d does not support camera2 API",
+                        cameraId.string(), deviceVersion);
             }
             break;
           case CAMERA_DEVICE_API_VERSION_3_0:
@@ -699,8 +801,8 @@
           case CAMERA_DEVICE_API_VERSION_3_4:
             if (effectiveApiLevel == API_1) { // Camera1 API route
                 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get());
-                *client = new Camera2Client(cameraService, tmp, packageName, cameraId, facing,
-                        clientPid, clientUid, servicePid, legacyMode);
+                *client = new Camera2Client(cameraService, tmp, packageName, cameraIdToInt(cameraId),
+                        facing, clientPid, clientUid, servicePid, legacyMode);
             } else { // Camera2 API route
                 sp<hardware::camera2::ICameraDeviceCallbacks> tmp =
                         static_cast<hardware::camera2::ICameraDeviceCallbacks*>(cameraCb.get());
@@ -712,8 +814,8 @@
             // Should not be reachable
             ALOGE("Unknown camera device HAL version: %d", deviceVersion);
             return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
-                    "Camera device \"%d\" has unknown HAL version %d",
-                    cameraId, deviceVersion);
+                    "Camera device \"%s\" has unknown HAL version %d",
+                    cameraId.string(), deviceVersion);
         }
     } else {
         // A particular HAL version is requested by caller. Create CameraClient
@@ -722,16 +824,16 @@
             halVersion == CAMERA_DEVICE_API_VERSION_1_0) {
             // Only support higher HAL version device opened as HAL1.0 device.
             sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get());
-            *client = new CameraClient(cameraService, tmp, packageName, cameraId, facing,
-                    clientPid, clientUid, servicePid, legacyMode);
+            *client = new CameraClient(cameraService, tmp, packageName, cameraIdToInt(cameraId),
+                    facing, clientPid, clientUid, servicePid, legacyMode);
         } else {
             // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet.
             ALOGE("Invalid camera HAL version %x: HAL %x device can only be"
                     " opened as HAL %x device", halVersion, deviceVersion,
                     CAMERA_DEVICE_API_VERSION_1_0);
             return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
-                    "Camera device \"%d\" (HAL version %d) cannot be opened as HAL version %d",
-                    cameraId, deviceVersion, halVersion);
+                    "Camera device \"%s\" (HAL version %d) cannot be opened as HAL version %d",
+                    cameraId.string(), deviceVersion, halVersion);
         }
     }
     return Status::ok();
@@ -922,7 +1024,7 @@
 
     int callingPid = getCallingPid();
 
-    if (!mModule) {
+    if (!mInitialized) {
         ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)",
                 callingPid);
         return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
@@ -1288,22 +1390,24 @@
 
     ATRACE_CALL();
     String8 id = String8::format("%d", cameraId);
-    int apiVersion = mModule->getModuleApiVersion();
-    if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED &&
-            apiVersion < CAMERA_MODULE_API_VERSION_2_3) {
-        /*
-         * Either the HAL version is unspecified in which case this just creates
-         * a camera client selected by the latest device version, or
-         * it's a particular version in which case the HAL must supported
-         * the open_legacy call
-         */
-        String8 msg = String8::format("Camera HAL module version %x too old for connectLegacy!",
-                apiVersion);
-        ALOGE("%s: %s",
-                __FUNCTION__, msg.string());
-        logRejected(id, getCallingPid(), String8(clientPackageName),
-                msg);
-        return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
+    if (mModule != nullptr) {
+        int apiVersion = mModule->getModuleApiVersion();
+        if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED &&
+                apiVersion < CAMERA_MODULE_API_VERSION_2_3) {
+            /*
+             * Either the HAL version is unspecified in which case this just creates
+             * a camera client selected by the latest device version, or
+             * it's a particular version in which case the HAL must supported
+             * the open_legacy call
+             */
+            String8 msg = String8::format("Camera HAL module version %x too old for connectLegacy!",
+                    apiVersion);
+            ALOGE("%s: %s",
+                    __FUNCTION__, msg.string());
+            logRejected(id, getCallingPid(), String8(clientPackageName),
+                    msg);
+            return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
+        }
     }
 
     Status ret = Status::ok();
@@ -1438,9 +1542,9 @@
         }
 
         int facing = -1;
-        int deviceVersion = getDeviceVersion(id, /*out*/&facing);
+        int deviceVersion = getDeviceVersion(cameraId, /*out*/&facing);
         sp<BasicClient> tmp = nullptr;
-        if(!(ret = makeClient(this, cameraCb, clientPackageName, id, facing, clientPid,
+        if(!(ret = makeClient(this, cameraCb, clientPackageName, cameraId, facing, clientPid,
                 clientUid, getpid(), legacyMode, halVersion, deviceVersion, effectiveApiLevel,
                 /*out*/&tmp)).isOk()) {
             return ret;
@@ -1450,8 +1554,14 @@
         LOG_ALWAYS_FATAL_IF(client.get() == nullptr, "%s: CameraService in invalid state",
                 __FUNCTION__);
 
-        if ((err = client->initialize(mModule)) != OK) {
-            ALOGE("%s: Could not initialize client from HAL module.", __FUNCTION__);
+        if (mModule != nullptr) {
+            err = client->initialize(mModule);
+        } else {
+            err = client->initialize(mCameraProviderManager);
+        }
+
+        if (err != OK) {
+            ALOGE("%s: Could not initialize client from HAL.", __FUNCTION__);
             // Errors could be from the HAL module open call or from AppOpsManager
             switch(err) {
                 case BAD_VALUE:
@@ -1513,6 +1623,7 @@
 
 Status CameraService::setTorchMode(const String16& cameraId, bool enabled,
         const sp<IBinder>& clientBinder) {
+    Mutex::Autolock lock(mServiceLock);
 
     ATRACE_CALL();
     if (enabled && clientBinder == nullptr) {
@@ -1534,8 +1645,8 @@
 
     StatusInternal cameraStatus = state->getStatus();
     if (cameraStatus != StatusInternal::PRESENT &&
-            cameraStatus != StatusInternal::NOT_PRESENT) {
-        ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string());
+            cameraStatus != StatusInternal::NOT_AVAILABLE) {
+        ALOGE("%s: camera id is invalid %s, status %d", __FUNCTION__, id.string(), (int)cameraStatus);
         return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
                 "Camera ID \"%s\" is a not valid camera ID", id.string());
     }
@@ -1557,7 +1668,7 @@
         }
 
         if (status == TorchModeStatus::NOT_AVAILABLE) {
-            if (cameraStatus == StatusInternal::NOT_PRESENT) {
+            if (cameraStatus == StatusInternal::NOT_AVAILABLE) {
                 ALOGE("%s: torch mode of camera %s is not available because "
                         "camera is in use", __FUNCTION__, id.string());
                 return STATUS_ERROR_FMT(ERROR_CAMERA_IN_USE,
@@ -1754,7 +1865,9 @@
         /*out*/ bool *isSupported) {
     ATRACE_CALL();
 
-    ALOGV("%s: for camera ID = %s", __FUNCTION__, String8(cameraId).string());
+    const String8 id = String8(cameraId);
+
+    ALOGV("%s: for camera ID = %s", __FUNCTION__, id.string());
 
     switch (apiVersion) {
         case API_VERSION_1:
@@ -1768,7 +1881,6 @@
 
     int facing = -1;
 
-    int id = cameraIdToInt(String8(cameraId));
     int deviceVersion = getDeviceVersion(id, &facing);
 
     switch(deviceVersion) {
@@ -1776,30 +1888,30 @@
         case CAMERA_DEVICE_API_VERSION_3_0:
         case CAMERA_DEVICE_API_VERSION_3_1:
             if (apiVersion == API_VERSION_2) {
-                ALOGV("%s: Camera id %d uses HAL version %d <3.2, doesn't support api2 without shim",
-                        __FUNCTION__, id, deviceVersion);
+                ALOGV("%s: Camera id %s uses HAL version %d <3.2, doesn't support api2 without shim",
+                        __FUNCTION__, id.string(), deviceVersion);
                 *isSupported = false;
             } else { // if (apiVersion == API_VERSION_1) {
-                ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported",
-                        __FUNCTION__, id);
+                ALOGV("%s: Camera id %s uses older HAL before 3.2, but api1 is always supported",
+                        __FUNCTION__, id.string());
                 *isSupported = true;
             }
             break;
         case CAMERA_DEVICE_API_VERSION_3_2:
         case CAMERA_DEVICE_API_VERSION_3_3:
         case CAMERA_DEVICE_API_VERSION_3_4:
-            ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly",
-                    __FUNCTION__, id);
+            ALOGV("%s: Camera id %s uses HAL3.2 or newer, supports api1/api2 directly",
+                    __FUNCTION__, id.string());
             *isSupported = true;
             break;
         case -1: {
-            String8 msg = String8::format("Unknown camera ID %d", id);
+            String8 msg = String8::format("Unknown camera ID %s", id.string());
             ALOGE("%s: %s", __FUNCTION__, msg.string());
             return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
         }
         default: {
-            String8 msg = String8::format("Unknown device version %d for device %d",
-                    deviceVersion, id);
+            String8 msg = String8::format("Unknown device version %x for device %s",
+                    deviceVersion, id.string());
             ALOGE("%s: %s", __FUNCTION__, msg.string());
             return STATUS_ERROR(ERROR_INVALID_OPERATION, msg.string());
         }
@@ -1875,6 +1987,8 @@
  * Also check that the device HAL version is still in support
  */
 int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) {
+    if (mModule == nullptr) return NO_INIT;
+
     // device_version undefined in CAMERA_MODULE_API_VERSION_1_0,
     // All CAMERA_MODULE_API_VERSION_1_0 devices are backward-compatible
     if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) {
@@ -2184,24 +2298,25 @@
 CameraService::Client::Client(const sp<CameraService>& cameraService,
         const sp<ICameraClient>& cameraClient,
         const String16& clientPackageName,
-        int cameraId, int cameraFacing,
+        const String8& cameraIdStr, int cameraFacing,
         int clientPid, uid_t clientUid,
         int servicePid) :
         CameraService::BasicClient(cameraService,
                 IInterface::asBinder(cameraClient),
                 clientPackageName,
-                cameraId, cameraFacing,
+                cameraIdStr, cameraFacing,
                 clientPid, clientUid,
-                servicePid)
+                servicePid),
+        mCameraId(CameraService::cameraIdToInt(cameraIdStr))
 {
     int callingPid = getCallingPid();
-    LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId);
+    LOG1("Client::Client E (pid %d, id %d)", callingPid, mCameraId);
 
     mRemoteCallback = cameraClient;
 
     cameraService->loadSound();
 
-    LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId);
+    LOG1("Client::Client X (pid %d, id %d)", callingPid, mCameraId);
 }
 
 // tear down the client
@@ -2209,26 +2324,28 @@
     ALOGV("~Client");
     mDestructionStarted = true;
 
-    mCameraService->releaseSound();
+    sCameraService->releaseSound();
     // unconditionally disconnect. function is idempotent
     Client::disconnect();
 }
 
+sp<CameraService> CameraService::BasicClient::BasicClient::sCameraService;
+
 CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService,
         const sp<IBinder>& remoteCallback,
         const String16& clientPackageName,
-        int cameraId, int cameraFacing,
+        const String8& cameraIdStr, int cameraFacing,
         int clientPid, uid_t clientUid,
         int servicePid):
-        mClientPackageName(clientPackageName), mDisconnected(false)
+        mCameraIdStr(cameraIdStr), mCameraFacing(cameraFacing),
+        mClientPackageName(clientPackageName), mClientPid(clientPid), mClientUid(clientUid),
+        mServicePid(servicePid),
+        mDisconnected(false),
+        mRemoteBinder(remoteCallback)
 {
-    mCameraService = cameraService;
-    mRemoteBinder = remoteCallback;
-    mCameraId = cameraId;
-    mCameraFacing = cameraFacing;
-    mClientPid = clientPid;
-    mClientUid = clientUid;
-    mServicePid = servicePid;
+    if (sCameraService == nullptr) {
+        sCameraService = cameraService;
+    }
     mOpsActive = false;
     mDestructionStarted = false;
 
@@ -2276,19 +2393,20 @@
     }
     mDisconnected = true;
 
-    mCameraService->removeByClient(this);
-    mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid,
+    sCameraService->removeByClient(this);
+    sCameraService->logDisconnected(mCameraIdStr, mClientPid,
             String8(mClientPackageName));
 
     sp<IBinder> remote = getRemote();
     if (remote != nullptr) {
-        remote->unlinkToDeath(mCameraService);
+        remote->unlinkToDeath(sCameraService);
     }
 
     finishCameraOps();
     // Notify flashlight that a camera device is closed.
-    mCameraService->mFlashlight->deviceClosed(String8::format("%d", mCameraId));
-    ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid);
+    sCameraService->mFlashlight->deviceClosed(mCameraIdStr);
+    ALOGI("%s: Disconnected client for camera %s for PID %d", __FUNCTION__, mCameraIdStr.string(),
+            mClientPid);
 
     // client shouldn't be able to call into us anymore
     mClientPid = 0;
@@ -2340,14 +2458,14 @@
             mClientUid, mClientPackageName);
 
     if (res == AppOpsManager::MODE_ERRORED) {
-        ALOGI("Camera %d: Access for \"%s\" has been revoked",
-                mCameraId, String8(mClientPackageName).string());
+        ALOGI("Camera %s: Access for \"%s\" has been revoked",
+                mCameraIdStr.string(), String8(mClientPackageName).string());
         return PERMISSION_DENIED;
     }
 
     if (res == AppOpsManager::MODE_IGNORED) {
-        ALOGI("Camera %d: Access for \"%s\" has been restricted",
-                mCameraId, String8(mClientPackageName).string());
+        ALOGI("Camera %s: Access for \"%s\" has been restricted",
+                mCameraIdStr.string(), String8(mClientPackageName).string());
         // Return the same error as for device policy manager rejection
         return -EACCES;
     }
@@ -2355,12 +2473,11 @@
     mOpsActive = true;
 
     // Transition device availability listeners from PRESENT -> NOT_AVAILABLE
-    mCameraService->updateStatus(StatusInternal::NOT_AVAILABLE,
-            String8::format("%d", mCameraId));
+    sCameraService->updateStatus(StatusInternal::NOT_AVAILABLE, mCameraIdStr);
 
     // Transition device state to OPEN
-    mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN,
-            String8::format("%d", mCameraId));
+    sCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN,
+            mCameraIdStr);
 
     return OK;
 }
@@ -2379,12 +2496,12 @@
                 StatusInternal::ENUMERATING};
 
         // Transition to PRESENT if the camera is not in either of the rejected states
-        mCameraService->updateStatus(StatusInternal::PRESENT,
-                String8::format("%d", mCameraId), rejected);
+        sCameraService->updateStatus(StatusInternal::PRESENT,
+                mCameraIdStr, rejected);
 
         // Transition device state to CLOSED
-        mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED,
-                String8::format("%d", mCameraId));
+        sCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED,
+                mCameraIdStr);
     }
     // Always stop watching, even if no camera op is active
     if (mOpsCallback != NULL) {
@@ -2416,7 +2533,7 @@
             "UNKNOWN");
 
     if (res != AppOpsManager::MODE_ALLOWED) {
-        ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId,
+        ALOGI("Camera %s: Access for \"%s\" revoked", mCameraIdStr.string(),
                 myName.string());
         // Reset the client PID to allow server-initiated disconnect,
         // and to prevent further calls by client.
@@ -2429,17 +2546,6 @@
 
 // ----------------------------------------------------------------------------
 
-// Provide client strong pointer for callbacks.
-sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) {
-    String8 cameraId = String8::format("%d", (int)(intptr_t) user);
-    auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId);
-    if (clientDescriptor != nullptr) {
-        return sp<Client>{
-                static_cast<Client*>(clientDescriptor->getValue().get())};
-    }
-    return sp<Client>{nullptr};
-}
-
 void CameraService::Client::notifyError(int32_t errorCode,
         const CaptureResultExtras& resultExtras) {
     (void) errorCode;
@@ -2645,8 +2751,8 @@
         }
 
         bool hasClient = false;
-        if (!mModule) {
-            result = String8::format("No camera module available!\n");
+        if (!mInitialized) {
+            result = String8::format("No camera HAL available!\n");
             write(fd, result.string(), result.size());
 
             // Dump event log for error information
@@ -2655,6 +2761,13 @@
             if (locked) mServiceLock.unlock();
             return NO_ERROR;
         }
+        if (mModule == nullptr) {
+            mCameraProviderManager->dump(fd, args);
+            // TODO - need way more dumping here
+
+            if (locked) mServiceLock.unlock();
+            return NO_ERROR;
+        }
 
         result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion());
         result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion());
@@ -2692,7 +2805,6 @@
             result = String8::format("Camera %s information:\n", cameraId.string());
             camera_info info;
 
-            // TODO: Change getCameraInfo + HAL to use String cameraIds
             status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info);
             if (rc != OK) {
                 result.appendFormat("  Error reading static information!\n");
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index a6c2fa8..d463b59 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -38,6 +38,7 @@
 #include "CameraFlashlight.h"
 
 #include "common/CameraModule.h"
+#include "common/CameraProviderManager.h"
 #include "media/RingBuffer.h"
 #include "utils/AutoConditionLock.h"
 #include "utils/ClientManager.h"
@@ -57,11 +58,13 @@
 
 class CameraService :
     public BinderService<CameraService>,
-    public ::android::hardware::BnCameraService,
-    public IBinder::DeathRecipient,
-    public camera_module_callbacks_t
+    public virtual ::android::hardware::BnCameraService,
+    public virtual IBinder::DeathRecipient,
+    public camera_module_callbacks_t,
+    public virtual CameraProviderManager::StatusListener
 {
     friend class BinderService<CameraService>;
+    friend class CameraClient;
 public:
     class Client;
     class BasicClient;
@@ -96,11 +99,12 @@
     virtual             ~CameraService();
 
     /////////////////////////////////////////////////////////////////////
-    // HAL Callbacks
+    // HAL Callbacks - implements CameraProviderManager::StatusListener
+
     virtual void        onDeviceStatusChanged(const String8 &cameraId,
-            hardware::camera::common::V1_0::CameraDeviceStatus newHalStatus);
+            hardware::camera::common::V1_0::CameraDeviceStatus newHalStatus) override;
     virtual void        onTorchStatusChanged(const String8& cameraId,
-            hardware::camera::common::V1_0::TorchModeStatus newStatus);
+            hardware::camera::common::V1_0::TorchModeStatus newStatus) override;
 
     /////////////////////////////////////////////////////////////////////
     // ICameraService
@@ -108,7 +112,7 @@
 
     virtual binder::Status     getCameraInfo(int cameraId,
             hardware::CameraInfo* cameraInfo);
-    virtual binder::Status     getCameraCharacteristics(const String16& id,
+    virtual binder::Status     getCameraCharacteristics(const String16& cameraId,
             CameraMetadata* cameraInfo);
     virtual binder::Status     getCameraVendorTagDescriptor(
             /*out*/
@@ -185,7 +189,7 @@
 
     /////////////////////////////////////////////////////////////////////
     // CameraDeviceFactory functionality
-    int                 getDeviceVersion(int cameraId, int* facing = NULL);
+    int                 getDeviceVersion(const String8& cameraId, int* facing = NULL);
 
     /////////////////////////////////////////////////////////////////////
     // Shared utilities
@@ -197,6 +201,7 @@
     class BasicClient : public virtual RefBase {
     public:
         virtual status_t       initialize(CameraModule *module) = 0;
+        virtual status_t       initialize(sp<CameraProviderManager> manager) = 0;
         virtual binder::Status disconnect();
 
         // because we can't virtually inherit IInterface, which breaks
@@ -233,7 +238,7 @@
         BasicClient(const sp<CameraService>& cameraService,
                 const sp<IBinder>& remoteCallback,
                 const String16& clientPackageName,
-                int cameraId,
+                const String8& cameraIdStr,
                 int cameraFacing,
                 int clientPid,
                 uid_t clientUid,
@@ -248,13 +253,13 @@
         bool                            mDestructionStarted;
 
         // these are initialized in the constructor.
-        sp<CameraService>               mCameraService;     // immutable after constructor
-        int                             mCameraId;          // immutable after constructor
-        int                             mCameraFacing;      // immutable after constructor
-        String16                        mClientPackageName; // immutable after constructor
+        static sp<CameraService>        sCameraService;
+        const String8                   mCameraIdStr;
+        const int                       mCameraFacing;
+        String16                        mClientPackageName;
         pid_t                           mClientPid;
-        uid_t                           mClientUid;         // immutable after constructor
-        pid_t                           mServicePid;        // immutable after constructor
+        const uid_t                     mClientUid;
+        const pid_t                     mServicePid;
         bool                            mDisconnected;
 
         // - The app-side Binder interface to receive callbacks from us
@@ -320,7 +325,7 @@
         Client(const sp<CameraService>& cameraService,
                 const sp<hardware::ICameraClient>& cameraClient,
                 const String16& clientPackageName,
-                int cameraId,
+                const String8& cameraIdStr,
                 int cameraFacing,
                 int clientPid,
                 uid_t clientUid,
@@ -343,14 +348,12 @@
         // superclass this can be cast to.
         virtual bool canCastToApiClient(apiLevel level) const;
     protected:
-        // Convert client from cookie.
-        static sp<CameraService::Client> getClientFromCookie(void* user);
-
         // Initialized in constructor
 
         // - The app-side Binder interface to receive callbacks from us
         sp<hardware::ICameraClient>               mRemoteCallback;
 
+        int mCameraId;  // All API1 clients use integer camera IDs
     }; // class Client
 
     /**
@@ -438,6 +441,7 @@
      */
     class CameraState {
     public:
+
         /**
          * Make a new CameraState and set the ID, cost, and conflicting devices using the values
          * returned in the HAL's camera_info struct for each device.
@@ -506,6 +510,12 @@
     // Delay-load the Camera HAL module
     virtual void onFirstRef();
 
+    // Load the legacy HAL module
+    status_t loadLegacyHalModule();
+
+    // Eumerate all camera providers in the system
+    status_t enumerateProviders();
+
     // Check if we can connect, before we acquire the service lock.
     // The returned originalClientPid is the PID of the original process that wants to connect to
     // camera.
@@ -676,7 +686,11 @@
     sp<MediaPlayer>     mSoundPlayer[NUM_SOUNDS];
     int                 mSoundRef;  // reference count (release all MediaPlayer when 0)
 
-    CameraModule*     mModule;
+    // Basic flag on whether the camera subsystem is in a usable state
+    bool                mInitialized;
+
+    CameraModule*       mModule;
+    sp<CameraProviderManager> mCameraProviderManager;
 
     // Guarded by mStatusListenerMutex
     std::vector<sp<hardware::ICameraServiceListener>> mListenerList;
@@ -767,7 +781,7 @@
     static int getCameraPriorityFromProcState(int procState);
 
     static binder::Status makeClient(const sp<CameraService>& cameraService,
-            const sp<IInterface>& cameraCb, const String16& packageName, int cameraId,
+            const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId,
             int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode,
             int halVersion, int deviceVersion, apiLevel effectiveApiLevel,
             /*out*/sp<BasicClient>* client);
diff --git a/services/camera/libcameraservice/api1/Camera2Client.cpp b/services/camera/libcameraservice/api1/Camera2Client.cpp
index bfbf640..3aec562 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.cpp
+++ b/services/camera/libcameraservice/api1/Camera2Client.cpp
@@ -56,7 +56,8 @@
         int servicePid,
         bool legacyMode):
         Camera2ClientBase(cameraService, cameraClient, clientPackageName,
-                cameraId, cameraFacing, clientPid, clientUid, servicePid),
+                String8::format("%d", cameraId), cameraFacing,
+                clientPid, clientUid, servicePid),
         mParameters(cameraId, cameraFacing)
 {
     ATRACE_CALL();
@@ -67,13 +68,22 @@
     mLegacyMode = legacyMode;
 }
 
-status_t Camera2Client::initialize(CameraModule *module)
+status_t Camera2Client::initialize(CameraModule *module) {
+    return initializeImpl(module);
+}
+
+status_t Camera2Client::initialize(sp<CameraProviderManager> manager) {
+    return initializeImpl(manager);
+}
+
+template<typename TProviderPtr>
+status_t Camera2Client::initializeImpl(TProviderPtr providerPtr)
 {
     ATRACE_CALL();
     ALOGV("%s: Initializing client for camera %d", __FUNCTION__, mCameraId);
     status_t res;
 
-    res = Camera2ClientBase::initialize(module);
+    res = Camera2ClientBase::initialize(providerPtr);
     if (res != OK) {
         return res;
     }
@@ -1034,7 +1044,7 @@
     }
 
     if (!restart) {
-        mCameraService->playSound(CameraService::SOUND_RECORDING_START);
+        sCameraService->playSound(CameraService::SOUND_RECORDING_START);
         mStreamingProcessor->updateRecordingRequest(params);
         if (res != OK) {
             ALOGE("%s: Camera %d: Unable to update recording request: %s (%d)",
@@ -1191,7 +1201,7 @@
             return;
     };
 
-    mCameraService->playSound(CameraService::SOUND_RECORDING_STOP);
+    sCameraService->playSound(CameraService::SOUND_RECORDING_STOP);
 
     // Remove recording stream because the video target may be abandoned soon.
     res = stopStream();
@@ -1621,7 +1631,7 @@
 }
 
 status_t Camera2Client::commandPlayRecordingSoundL() {
-    mCameraService->playSound(CameraService::SOUND_RECORDING_START);
+    sCameraService->playSound(CameraService::SOUND_RECORDING_START);
     return OK;
 }
 
diff --git a/services/camera/libcameraservice/api1/Camera2Client.h b/services/camera/libcameraservice/api1/Camera2Client.h
index e2129f5..87c91a0 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.h
+++ b/services/camera/libcameraservice/api1/Camera2Client.h
@@ -98,7 +98,8 @@
 
     virtual ~Camera2Client();
 
-    status_t initialize(CameraModule *module);
+    virtual status_t initialize(CameraModule *module) override;
+    virtual status_t initialize(sp<CameraProviderManager> manager) override;
 
     virtual status_t dump(int fd, const Vector<String16>& args);
 
@@ -219,6 +220,9 @@
 
     // Video snapshot jpeg size overriding helper function
     status_t overrideVideoSnapshotSize(Parameters &params);
+
+    template<typename TProviderPtr>
+    status_t initializeImpl(TProviderPtr providerPtr);
 };
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/api1/CameraClient.cpp b/services/camera/libcameraservice/api1/CameraClient.cpp
index 266fb03..b83d425 100644
--- a/services/camera/libcameraservice/api1/CameraClient.cpp
+++ b/services/camera/libcameraservice/api1/CameraClient.cpp
@@ -41,7 +41,8 @@
         int clientPid, int clientUid,
         int servicePid, bool legacyMode):
         Client(cameraService, cameraClient, clientPackageName,
-                cameraId, cameraFacing, clientPid, clientUid, servicePid)
+                String8::format("%d", cameraId), cameraFacing, clientPid,
+                clientUid, servicePid)
 {
     int callingPid = getCallingPid();
     LOG1("CameraClient::CameraClient E (pid %d, id %d)", callingPid, cameraId);
@@ -61,6 +62,15 @@
 }
 
 status_t CameraClient::initialize(CameraModule *module) {
+    return initializeImpl<CameraModule*>(module);
+}
+
+status_t CameraClient::initialize(sp<CameraProviderManager> manager) {
+    return initializeImpl<sp<CameraProviderManager>>(manager);
+}
+
+template<typename TProviderPtr>
+status_t CameraClient::initializeImpl(TProviderPtr providerPtr) {
     int callingPid = getCallingPid();
     status_t res;
 
@@ -76,7 +86,7 @@
     snprintf(camera_device_name, sizeof(camera_device_name), "%d", mCameraId);
 
     mHardware = new CameraHardwareInterface(camera_device_name);
-    res = mHardware->initialize(module);
+    res = mHardware->initialize(providerPtr);
     if (res != OK) {
         ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
                 __FUNCTION__, mCameraId, strerror(-res), res);
@@ -252,7 +262,7 @@
     // Turn off all messages.
     disableMsgType(CAMERA_MSG_ALL_MSGS);
     mHardware->stopPreview();
-    mCameraService->updateProxyDeviceState(
+    sCameraService->updateProxyDeviceState(
         ICameraServiceProxy::CAMERA_STATE_IDLE,
         String8::format("%d", mCameraId));
     mHardware->cancelPicture();
@@ -414,7 +424,7 @@
     mHardware->setPreviewWindow(mPreviewWindow);
     result = mHardware->startPreview();
     if (result == NO_ERROR) {
-        mCameraService->updateProxyDeviceState(
+        sCameraService->updateProxyDeviceState(
             ICameraServiceProxy::CAMERA_STATE_ACTIVE,
             String8::format("%d", mCameraId));
     }
@@ -440,7 +450,7 @@
 
     // start recording mode
     enableMsgType(CAMERA_MSG_VIDEO_FRAME);
-    mCameraService->playSound(CameraService::SOUND_RECORDING_START);
+    sCameraService->playSound(CameraService::SOUND_RECORDING_START);
     result = mHardware->startRecording();
     if (result != NO_ERROR) {
         ALOGE("mHardware->startRecording() failed with status %d", result);
@@ -457,7 +467,7 @@
 
     disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
     mHardware->stopPreview();
-    mCameraService->updateProxyDeviceState(
+    sCameraService->updateProxyDeviceState(
         ICameraServiceProxy::CAMERA_STATE_IDLE,
         String8::format("%d", mCameraId));
     mPreviewBuffer.clear();
@@ -471,7 +481,7 @@
 
     disableMsgType(CAMERA_MSG_VIDEO_FRAME);
     mHardware->stopRecording();
-    mCameraService->playSound(CameraService::SOUND_RECORDING_STOP);
+    sCameraService->playSound(CameraService::SOUND_RECORDING_STOP);
 
     mPreviewBuffer.clear();
 }
@@ -697,7 +707,7 @@
         }
         return OK;
     } else if (cmd == CAMERA_CMD_PLAY_RECORDING_SOUND) {
-        mCameraService->playSound(CameraService::SOUND_RECORDING_START);
+        sCameraService->playSound(CameraService::SOUND_RECORDING_START);
     } else if (cmd == CAMERA_CMD_SET_VIDEO_BUFFER_COUNT) {
         // Silently ignore this command
         return INVALID_OPERATION;
@@ -748,6 +758,16 @@
     return false;
 }
 
+sp<CameraClient> CameraClient::getClientFromCookie(void* user) {
+    String8 cameraId = String8::format("%d", (int)(intptr_t) user);
+    auto clientDescriptor = sCameraService->mActiveClientManager.get(cameraId);
+    if (clientDescriptor != nullptr) {
+        return sp<CameraClient>{
+                static_cast<CameraClient*>(clientDescriptor->getValue().get())};
+    }
+    return sp<CameraClient>{nullptr};
+}
+
 // Callback messages can be dispatched to internal handlers or pass to our
 // client's callback functions, depending on the message type.
 //
@@ -767,7 +787,7 @@
         int32_t ext2, void* user) {
     LOG2("notifyCallback(%d)", msgType);
 
-    sp<CameraClient> client = static_cast<CameraClient*>(getClientFromCookie(user).get());
+    sp<CameraClient> client = getClientFromCookie(user);
     if (client.get() == nullptr) return;
 
     if (!client->lockIfMessageWanted(msgType)) return;
@@ -787,7 +807,7 @@
         const sp<IMemory>& dataPtr, camera_frame_metadata_t *metadata, void* user) {
     LOG2("dataCallback(%d)", msgType);
 
-    sp<CameraClient> client = static_cast<CameraClient*>(getClientFromCookie(user).get());
+    sp<CameraClient> client = getClientFromCookie(user);
     if (client.get() == nullptr) return;
 
     if (!client->lockIfMessageWanted(msgType)) return;
@@ -820,7 +840,7 @@
         int32_t msgType, const sp<IMemory>& dataPtr, void* user) {
     LOG2("dataCallbackTimestamp(%d)", msgType);
 
-    sp<CameraClient> client = static_cast<CameraClient*>(getClientFromCookie(user).get());
+    sp<CameraClient> client = getClientFromCookie(user);
     if (client.get() == nullptr) return;
 
     if (!client->lockIfMessageWanted(msgType)) return;
@@ -837,7 +857,7 @@
 // snapshot taken callback
 void CameraClient::handleShutter(void) {
     if (mPlayShutterSound) {
-        mCameraService->playSound(CameraService::SOUND_SHUTTER);
+        sCameraService->playSound(CameraService::SOUND_SHUTTER);
     }
 
     sp<hardware::ICameraClient> c = mRemoteCallback;
@@ -850,7 +870,7 @@
 
     // Shutters only happen in response to takePicture, so mark device as
     // idle now, until preview is restarted
-    mCameraService->updateProxyDeviceState(
+    sCameraService->updateProxyDeviceState(
         ICameraServiceProxy::CAMERA_STATE_IDLE,
         String8::format("%d", mCameraId));
 
diff --git a/services/camera/libcameraservice/api1/CameraClient.h b/services/camera/libcameraservice/api1/CameraClient.h
index 4f46fc4..91f00e3 100644
--- a/services/camera/libcameraservice/api1/CameraClient.h
+++ b/services/camera/libcameraservice/api1/CameraClient.h
@@ -70,7 +70,8 @@
             bool legacyMode = false);
     ~CameraClient();
 
-    status_t initialize(CameraModule *module);
+    virtual status_t initialize(CameraModule *module) override;
+    virtual status_t initialize(sp<CameraProviderManager> manager) override;
 
     virtual status_t dump(int fd, const Vector<String16>& args);
 
@@ -78,6 +79,9 @@
 
 private:
 
+    template<typename TProviderPtr>
+    status_t initializeImpl(TProviderPtr providerPtr);
+
     // check whether the calling process matches mClientPid.
     status_t                checkPid() const;
     status_t                checkPidAndHardware() const;  // also check mHardware != 0
@@ -98,6 +102,8 @@
     // internal function used by sendCommand to enable/disable shutter sound.
     status_t                enableShutterSound(bool enable);
 
+    static sp<CameraClient>        getClientFromCookie(void* user);
+
     // these are static callback functions
     static void             notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2, void* user);
     static void             dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
diff --git a/services/camera/libcameraservice/api1/client2/Parameters.cpp b/services/camera/libcameraservice/api1/client2/Parameters.cpp
index 32b99ca..6efe4e3 100644
--- a/services/camera/libcameraservice/api1/client2/Parameters.cpp
+++ b/services/camera/libcameraservice/api1/client2/Parameters.cpp
@@ -917,6 +917,8 @@
     } else {
         allowZslMode = true;
     }
+    // TODO (b/34131351): turn ZSL back on after fixing the issue
+    allowZslMode = false;
 
     ALOGI("%s: allowZslMode: %d slowJpegMode %d", __FUNCTION__, allowZslMode, slowJpegMode);
 
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
index 5166eb5..d490119 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
@@ -46,7 +46,7 @@
         const sp<CameraService>& cameraService,
         const sp<hardware::camera2::ICameraDeviceCallbacks>& remoteCallback,
         const String16& clientPackageName,
-        int cameraId,
+        const String8& cameraId,
         int cameraFacing,
         int clientPid,
         uid_t clientUid,
@@ -67,7 +67,7 @@
 CameraDeviceClient::CameraDeviceClient(const sp<CameraService>& cameraService,
         const sp<hardware::camera2::ICameraDeviceCallbacks>& remoteCallback,
         const String16& clientPackageName,
-        int cameraId,
+        const String8& cameraId,
         int cameraFacing,
         int clientPid,
         uid_t clientUid,
@@ -79,22 +79,30 @@
     mRequestIdCounter(0) {
 
     ATRACE_CALL();
-    ALOGI("CameraDeviceClient %d: Opened", cameraId);
+    ALOGI("CameraDeviceClient %s: Opened", cameraId.string());
 }
 
-status_t CameraDeviceClient::initialize(CameraModule *module)
-{
+status_t CameraDeviceClient::initialize(CameraModule *module) {
+    return initializeImpl(module);
+}
+
+status_t CameraDeviceClient::initialize(sp<CameraProviderManager> manager) {
+    return initializeImpl(manager);
+}
+
+template<typename TProviderPtr>
+status_t CameraDeviceClient::initializeImpl(TProviderPtr providerPtr) {
     ATRACE_CALL();
     status_t res;
 
-    res = Camera2ClientBase::initialize(module);
+    res = Camera2ClientBase::initialize(providerPtr);
     if (res != OK) {
         return res;
     }
 
     String8 threadName;
     mFrameProcessor = new FrameProcessorBase(mDevice);
-    threadName = String8::format("CDU-%d-FrameProc", mCameraId);
+    threadName = String8::format("CDU-%s-FrameProc", mCameraIdStr.string());
     mFrameProcessor->run(threadName.string());
 
     mFrameProcessor->registerListener(FRAME_PROCESSOR_LISTENER_MIN_ID,
@@ -138,8 +146,8 @@
     }
 
     if (requests.empty()) {
-        ALOGE("%s: Camera %d: Sent null request. Rejecting request.",
-              __FUNCTION__, mCameraId);
+        ALOGE("%s: Camera %s: Sent null request. Rejecting request.",
+              __FUNCTION__, mCameraIdStr.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, "Empty request list");
     }
 
@@ -150,13 +158,14 @@
     for (auto&& request: requests) {
         if (request.mIsReprocess) {
             if (!mInputStream.configured) {
-                ALOGE("%s: Camera %d: no input stream is configured.", __FUNCTION__, mCameraId);
+                ALOGE("%s: Camera %s: no input stream is configured.", __FUNCTION__,
+                        mCameraIdStr.string());
                 return STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                        "No input configured for camera %d but request is for reprocessing",
-                        mCameraId);
+                        "No input configured for camera %s but request is for reprocessing",
+                        mCameraIdStr.string());
             } else if (streaming) {
-                ALOGE("%s: Camera %d: streaming reprocess requests not supported.", __FUNCTION__,
-                        mCameraId);
+                ALOGE("%s: Camera %s: streaming reprocess requests not supported.", __FUNCTION__,
+                        mCameraIdStr.string());
                 return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT,
                         "Repeating reprocess requests not supported");
             }
@@ -164,13 +173,13 @@
 
         CameraMetadata metadata(request.mMetadata);
         if (metadata.isEmpty()) {
-            ALOGE("%s: Camera %d: Sent empty metadata packet. Rejecting request.",
-                   __FUNCTION__, mCameraId);
+            ALOGE("%s: Camera %s: Sent empty metadata packet. Rejecting request.",
+                   __FUNCTION__, mCameraIdStr.string());
             return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT,
                     "Request settings are empty");
         } else if (request.mSurfaceList.isEmpty()) {
-            ALOGE("%s: Camera %d: Requests must have at least one surface target. "
-                    "Rejecting request.", __FUNCTION__, mCameraId);
+            ALOGE("%s: Camera %s: Requests must have at least one surface target. "
+                    "Rejecting request.", __FUNCTION__, mCameraIdStr.string());
             return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT,
                     "Request has no output targets");
         }
@@ -195,17 +204,17 @@
 
             // Trying to submit request with surface that wasn't created
             if (idx == NAME_NOT_FOUND) {
-                ALOGE("%s: Camera %d: Tried to submit a request with a surface that"
+                ALOGE("%s: Camera %s: Tried to submit a request with a surface that"
                         " we have not called createStream on",
-                        __FUNCTION__, mCameraId);
+                        __FUNCTION__, mCameraIdStr.string());
                 return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT,
                         "Request targets Surface that is not part of current capture session");
             }
 
             int streamId = mStreamMap.valueAt(idx);
             outputStreamIds.push_back(streamId);
-            ALOGV("%s: Camera %d: Appending output stream %d to request",
-                    __FUNCTION__, mCameraId, streamId);
+            ALOGV("%s: Camera %s: Appending output stream %d to request",
+                    __FUNCTION__, mCameraIdStr.string(), streamId);
         }
 
         metadata.update(ANDROID_REQUEST_OUTPUT_STREAMS, &outputStreamIds[0],
@@ -217,8 +226,9 @@
 
         metadata.update(ANDROID_REQUEST_ID, &(submitInfo->mRequestId), /*size*/1);
         loopCounter++; // loopCounter starts from 1
-        ALOGV("%s: Camera %d: Creating request with ID %d (%d of %zu)",
-              __FUNCTION__, mCameraId, submitInfo->mRequestId, loopCounter, requests.size());
+        ALOGV("%s: Camera %s: Creating request with ID %d (%d of %zu)",
+                __FUNCTION__, mCameraIdStr.string(), submitInfo->mRequestId,
+                loopCounter, requests.size());
 
         metadataRequestList.push_back(metadata);
     }
@@ -228,8 +238,8 @@
         err = mDevice->setStreamingRequestList(metadataRequestList, &(submitInfo->mLastFrameNumber));
         if (err != OK) {
             String8 msg = String8::format(
-                "Camera %d:  Got error %s (%d) after trying to set streaming request",
-                mCameraId, strerror(-err), err);
+                "Camera %s:  Got error %s (%d) after trying to set streaming request",
+                mCameraIdStr.string(), strerror(-err), err);
             ALOGE("%s: %s", __FUNCTION__, msg.string());
             res = STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION,
                     msg.string());
@@ -241,8 +251,8 @@
         err = mDevice->captureList(metadataRequestList, &(submitInfo->mLastFrameNumber));
         if (err != OK) {
             String8 msg = String8::format(
-                "Camera %d: Got error %s (%d) after trying to submit capture request",
-                mCameraId, strerror(-err), err);
+                "Camera %s: Got error %s (%d) after trying to submit capture request",
+                mCameraIdStr.string(), strerror(-err), err);
             ALOGE("%s: %s", __FUNCTION__, msg.string());
             res = STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION,
                     msg.string());
@@ -250,7 +260,7 @@
         ALOGV("%s: requestId = %d ", __FUNCTION__, submitInfo->mRequestId);
     }
 
-    ALOGV("%s: Camera %d: End of function", __FUNCTION__, mCameraId);
+    ALOGV("%s: Camera %s: End of function", __FUNCTION__, mCameraIdStr.string());
     return res;
 }
 
@@ -274,8 +284,8 @@
 
     Mutex::Autolock idLock(mStreamingRequestIdLock);
     if (mStreamingRequestId != requestId) {
-        String8 msg = String8::format("Camera %d: Canceling request ID %d doesn't match "
-                "current request ID %d", mCameraId, requestId, mStreamingRequestId);
+        String8 msg = String8::format("Camera %s: Canceling request ID %d doesn't match "
+                "current request ID %d", mCameraIdStr.string(), requestId, mStreamingRequestId);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
@@ -283,13 +293,13 @@
     err = mDevice->clearStreamingRequest(lastFrameNumber);
 
     if (err == OK) {
-        ALOGV("%s: Camera %d: Successfully cleared streaming request",
-              __FUNCTION__, mCameraId);
+        ALOGV("%s: Camera %s: Successfully cleared streaming request",
+                __FUNCTION__, mCameraIdStr.string());
         mStreamingRequestId = REQUEST_ID_NONE;
     } else {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error clearing streaming request: %s (%d)",
-                mCameraId, strerror(-err), err);
+                "Camera %s: Error clearing streaming request: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
     }
 
     return res;
@@ -328,8 +338,8 @@
         }
         if (!isConstrainedHighSpeedSupported) {
             String8 msg = String8::format(
-                "Camera %d: Try to create a constrained high speed configuration on a device"
-                " that doesn't support it.", mCameraId);
+                "Camera %s: Try to create a constrained high speed configuration on a device"
+                " that doesn't support it.", mCameraIdStr.string());
             ALOGE("%s: %s", __FUNCTION__, msg.string());
             return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT,
                     msg.string());
@@ -338,13 +348,13 @@
 
     status_t err = mDevice->configureStreams(isConstrainedHighSpeed);
     if (err == BAD_VALUE) {
-        String8 msg = String8::format("Camera %d: Unsupported set of inputs/outputs provided",
-                mCameraId);
+        String8 msg = String8::format("Camera %s: Unsupported set of inputs/outputs provided",
+                mCameraIdStr.string());
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         res = STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     } else if (err != OK) {
-        String8 msg = String8::format("Camera %d: Error configuring streams: %s (%d)",
-                mCameraId, strerror(-err), err);
+        String8 msg = String8::format("Camera %s: Error configuring streams: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         res = STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
@@ -389,8 +399,8 @@
                 }
             }
             if (dIndex == NAME_NOT_FOUND) {
-                String8 msg = String8::format("Camera %d: Invalid stream ID (%d) specified, no such"
-                        " stream created yet", mCameraId, streamId);
+                String8 msg = String8::format("Camera %s: Invalid stream ID (%d) specified, no such"
+                        " stream created yet", mCameraIdStr.string(), streamId);
                 ALOGW("%s: %s", __FUNCTION__, msg.string());
                 return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
             }
@@ -401,8 +411,8 @@
     status_t err = mDevice->deleteStream(streamId);
 
     if (err != OK) {
-        String8 msg = String8::format("Camera %d: Unexpected error %s (%d) when deleting stream %d",
-                mCameraId, strerror(-err), err, streamId);
+        String8 msg = String8::format("Camera %s: Unexpected error %s (%d) when deleting stream %d",
+                mCameraIdStr.string(), strerror(-err), err, streamId);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         res = STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     } else {
@@ -458,8 +468,8 @@
     {
         ssize_t index = mStreamMap.indexOfKey(IInterface::asBinder(bufferProducer));
         if (index != NAME_NOT_FOUND) {
-            String8 msg = String8::format("Camera %d: Surface already has a stream created for it "
-                    "(ID %zd)", mCameraId, index);
+            String8 msg = String8::format("Camera %s: Surface already has a stream created for it "
+                    "(ID %zd)", mCameraIdStr.string(), index);
             ALOGW("%s: %s", __FUNCTION__, msg.string());
             return STATUS_ERROR(CameraService::ERROR_ALREADY_EXISTS, msg.string());
         }
@@ -471,14 +481,14 @@
     bool useAsync = false;
     if ((err = bufferProducer->query(NATIVE_WINDOW_CONSUMER_USAGE_BITS,
             &consumerUsage)) != OK) {
-        String8 msg = String8::format("Camera %d: Failed to query Surface consumer usage: %s (%d)",
-                mCameraId, strerror(-err), err);
+        String8 msg = String8::format("Camera %s: Failed to query Surface consumer usage: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
     if (consumerUsage & GraphicBuffer::USAGE_HW_TEXTURE) {
-        ALOGW("%s: Camera %d with consumer usage flag: 0x%x: Forcing asynchronous mode for stream",
-                __FUNCTION__, mCameraId, consumerUsage);
+        ALOGW("%s: Camera %s with consumer usage flag: 0x%x: Forcing asynchronous mode for stream",
+                __FUNCTION__, mCameraIdStr.string(), consumerUsage);
         useAsync = true;
     }
 
@@ -495,27 +505,27 @@
     ANativeWindow *anw = surface.get();
 
     if ((err = anw->query(anw, NATIVE_WINDOW_WIDTH, &width)) != OK) {
-        String8 msg = String8::format("Camera %d: Failed to query Surface width: %s (%d)",
-                mCameraId, strerror(-err), err);
+        String8 msg = String8::format("Camera %s: Failed to query Surface width: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
     if ((err = anw->query(anw, NATIVE_WINDOW_HEIGHT, &height)) != OK) {
-        String8 msg = String8::format("Camera %d: Failed to query Surface height: %s (%d)",
-                mCameraId, strerror(-err), err);
+        String8 msg = String8::format("Camera %s: Failed to query Surface height: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
     if ((err = anw->query(anw, NATIVE_WINDOW_FORMAT, &format)) != OK) {
-        String8 msg = String8::format("Camera %d: Failed to query Surface format: %s (%d)",
-                mCameraId, strerror(-err), err);
+        String8 msg = String8::format("Camera %s: Failed to query Surface format: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
     if ((err = anw->query(anw, NATIVE_WINDOW_DEFAULT_DATASPACE,
                             reinterpret_cast<int*>(&dataSpace))) != OK) {
-        String8 msg = String8::format("Camera %d: Failed to query Surface dataspace: %s (%d)",
-                mCameraId, strerror(-err), err);
+        String8 msg = String8::format("Camera %s: Failed to query Surface dataspace: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
@@ -524,8 +534,8 @@
     //       IMPLEMENTATION_DEFINED. b/9487482
     if (format >= HAL_PIXEL_FORMAT_RGBA_8888 &&
         format <= HAL_PIXEL_FORMAT_BGRA_8888) {
-        ALOGW("%s: Camera %d: Overriding format %#x to IMPLEMENTATION_DEFINED",
-              __FUNCTION__, mCameraId, format);
+        ALOGW("%s: Camera %s: Overriding format %#x to IMPLEMENTATION_DEFINED",
+              __FUNCTION__, mCameraIdStr.string(), format);
         format = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
     }
 
@@ -533,8 +543,8 @@
     if (flexibleConsumer && isPublicFormat(format) &&
             !CameraDeviceClient::roundBufferDimensionNearest(width, height,
             format, dataSpace, mDevice->info(), /*out*/&width, /*out*/&height)) {
-        String8 msg = String8::format("Camera %d: No supported stream configurations with "
-                "format %#x defined, failed to create output stream", mCameraId, format);
+        String8 msg = String8::format("Camera %s: No supported stream configurations with "
+                "format %#x defined, failed to create output stream", mCameraIdStr.string(), format);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
@@ -546,14 +556,14 @@
 
     if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error creating output stream (%d x %d, fmt %x, dataSpace %x): %s (%d)",
-                mCameraId, width, height, format, dataSpace, strerror(-err), err);
+                "Camera %s: Error creating output stream (%d x %d, fmt %x, dataSpace %x): %s (%d)",
+                mCameraIdStr.string(), width, height, format, dataSpace, strerror(-err), err);
     } else {
         mStreamMap.add(binder, streamId);
 
-        ALOGV("%s: Camera %d: Successfully created a new stream ID %d for output surface"
+        ALOGV("%s: Camera %s: Successfully created a new stream ID %d for output surface"
                 " (%d x %d) with format 0x%x.",
-              __FUNCTION__, mCameraId, streamId, width, height, format);
+              __FUNCTION__, mCameraIdStr.string(), streamId, width, height, format);
 
         // Set transform flags to ensure preview to be rotated correctly.
         res = setStreamTransformLocked(streamId);
@@ -596,17 +606,17 @@
 
     if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error creating output stream (%d x %d, fmt %x, dataSpace %x): %s (%d)",
-                mCameraId, width, height, format, dataSpace, strerror(-err), err);
+                "Camera %s: Error creating output stream (%d x %d, fmt %x, dataSpace %x): %s (%d)",
+                mCameraIdStr.string(), width, height, format, dataSpace, strerror(-err), err);
     } else {
         // Can not add streamId to mStreamMap here, as the surface is deferred. Add it to
         // a separate list to track. Once the deferred surface is set, this id will be
         // relocated to mStreamMap.
         mDeferredStreams.push_back(streamId);
 
-        ALOGV("%s: Camera %d: Successfully created a new stream ID %d for a deferred surface"
+        ALOGV("%s: Camera %s: Successfully created a new stream ID %d for a deferred surface"
                 " (%d x %d) stream with format 0x%x.",
-              __FUNCTION__, mCameraId, streamId, width, height, format);
+              __FUNCTION__, mCameraIdStr.string(), streamId, width, height, format);
 
         // Set transform flags to ensure preview to be rotated correctly.
         res = setStreamTransformLocked(streamId);
@@ -661,8 +671,8 @@
     }
 
     if (mInputStream.configured) {
-        String8 msg = String8::format("Camera %d: Already has an input stream "
-                "configured (ID %zd)", mCameraId, mInputStream.id);
+        String8 msg = String8::format("Camera %s: Already has an input stream "
+                "configured (ID %zd)", mCameraIdStr.string(), mInputStream.id);
         ALOGE("%s: %s", __FUNCTION__, msg.string() );
         return STATUS_ERROR(CameraService::ERROR_ALREADY_EXISTS, msg.string());
     }
@@ -676,13 +686,13 @@
         mInputStream.format = format;
         mInputStream.id = streamId;
 
-        ALOGV("%s: Camera %d: Successfully created a new input stream ID %d",
-                __FUNCTION__, mCameraId, streamId);
+        ALOGV("%s: Camera %s: Successfully created a new input stream ID %d",
+                __FUNCTION__, mCameraIdStr.string(), streamId);
 
         *newStreamId = streamId;
     } else {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error creating new input stream: %s (%d)", mCameraId,
+                "Camera %s: Error creating new input stream: %s (%d)", mCameraIdStr.string(),
                 strerror(-err), err);
     }
 
@@ -706,8 +716,8 @@
     status_t err = mDevice->getInputBufferProducer(&producer);
     if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error getting input Surface: %s (%d)",
-                mCameraId, strerror(-err), err);
+                "Camera %s: Error getting input Surface: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
     } else {
         inputSurface->name = String16("CameraInput");
         inputSurface->graphicBufferProducer = producer;
@@ -828,13 +838,13 @@
         request->swap(metadata);
     } else if (err == BAD_VALUE) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                "Camera %d: Template ID %d is invalid or not supported: %s (%d)",
-                mCameraId, templateId, strerror(-err), err);
+                "Camera %s: Template ID %d is invalid or not supported: %s (%d)",
+                mCameraIdStr.string(), templateId, strerror(-err), err);
 
     } else {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error creating default request for template %d: %s (%d)",
-                mCameraId, templateId, strerror(-err), err);
+                "Camera %s: Error creating default request for template %d: %s (%d)",
+                mCameraIdStr.string(), templateId, strerror(-err), err);
     }
     return res;
 }
@@ -882,16 +892,16 @@
     Mutex::Autolock idLock(mStreamingRequestIdLock);
     if (mStreamingRequestId != REQUEST_ID_NONE) {
         String8 msg = String8::format(
-            "Camera %d: Try to waitUntilIdle when there are active streaming requests",
-            mCameraId);
+            "Camera %s: Try to waitUntilIdle when there are active streaming requests",
+            mCameraIdStr.string());
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_INVALID_OPERATION, msg.string());
     }
     status_t err = mDevice->waitUntilDrained();
     if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error waiting to drain: %s (%d)",
-                mCameraId, strerror(-err), err);
+                "Camera %s: Error waiting to drain: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
     }
     ALOGV("%s Done", __FUNCTION__);
     return res;
@@ -917,7 +927,7 @@
     status_t err = mDevice->flush(lastFrameNumber);
     if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error flushing device: %s (%d)", mCameraId, strerror(-err), err);
+                "Camera %s: Error flushing device: %s (%d)", mCameraIdStr.string(), strerror(-err), err);
     }
     return res;
 }
@@ -941,8 +951,8 @@
     }
 
     if (index == NAME_NOT_FOUND) {
-        String8 msg = String8::format("Camera %d: Invalid stream ID (%d) specified, no stream "
-              "with that ID exists", mCameraId, streamId);
+        String8 msg = String8::format("Camera %s: Invalid stream ID (%d) specified, no stream "
+              "with that ID exists", mCameraIdStr.string(), streamId);
         ALOGW("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
@@ -952,11 +962,11 @@
     status_t err = mDevice->prepare(streamId);
     if (err == BAD_VALUE) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                "Camera %d: Stream %d has already been used, and cannot be prepared",
-                mCameraId, streamId);
+                "Camera %s: Stream %d has already been used, and cannot be prepared",
+                mCameraIdStr.string(), streamId);
     } else if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error preparing stream %d: %s (%d)", mCameraId, streamId,
+                "Camera %s: Error preparing stream %d: %s (%d)", mCameraIdStr.string(), streamId,
                 strerror(-err), err);
     }
     return res;
@@ -981,15 +991,15 @@
     }
 
     if (index == NAME_NOT_FOUND) {
-        String8 msg = String8::format("Camera %d: Invalid stream ID (%d) specified, no stream "
-              "with that ID exists", mCameraId, streamId);
+        String8 msg = String8::format("Camera %s: Invalid stream ID (%d) specified, no stream "
+              "with that ID exists", mCameraIdStr.string(), streamId);
         ALOGW("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
 
     if (maxCount <= 0) {
-        String8 msg = String8::format("Camera %d: maxCount (%d) must be greater than 0",
-                mCameraId, maxCount);
+        String8 msg = String8::format("Camera %s: maxCount (%d) must be greater than 0",
+                mCameraIdStr.string(), maxCount);
         ALOGE("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
@@ -999,11 +1009,11 @@
     status_t err = mDevice->prepare(maxCount, streamId);
     if (err == BAD_VALUE) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                "Camera %d: Stream %d has already been used, and cannot be prepared",
-                mCameraId, streamId);
+                "Camera %s: Stream %d has already been used, and cannot be prepared",
+                mCameraIdStr.string(), streamId);
     } else if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error preparing stream %d: %s (%d)", mCameraId, streamId,
+                "Camera %s: Error preparing stream %d: %s (%d)", mCameraIdStr.string(), streamId,
                 strerror(-err), err);
     }
 
@@ -1029,8 +1039,8 @@
     }
 
     if (index == NAME_NOT_FOUND) {
-        String8 msg = String8::format("Camera %d: Invalid stream ID (%d) specified, no stream "
-              "with that ID exists", mCameraId, streamId);
+        String8 msg = String8::format("Camera %s: Invalid stream ID (%d) specified, no stream "
+              "with that ID exists", mCameraIdStr.string(), streamId);
         ALOGW("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
@@ -1040,11 +1050,11 @@
     status_t err = mDevice->tearDown(streamId);
     if (err == BAD_VALUE) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                "Camera %d: Stream %d is still in use, cannot be torn down",
-                mCameraId, streamId);
+                "Camera %s: Stream %d is still in use, cannot be torn down",
+                mCameraIdStr.string(), streamId);
     } else if (err != OK) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error tearing down stream %d: %s (%d)", mCameraId, streamId,
+                "Camera %s: Error tearing down stream %d: %s (%d)", mCameraIdStr.string(), streamId,
                 strerror(-err), err);
     }
 
@@ -1076,8 +1086,8 @@
         }
     }
     if (index == NAME_NOT_FOUND) {
-        String8 msg = String8::format("Camera %d: deferred surface is set to a unknown stream"
-                "(ID %d)", mCameraId, streamId);
+        String8 msg = String8::format("Camera %s: deferred surface is set to a unknown stream"
+                "(ID %d)", mCameraIdStr.string(), streamId);
         ALOGW("%s: %s", __FUNCTION__, msg.string());
         return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
     }
@@ -1090,8 +1100,8 @@
     {
         ssize_t index = mStreamMap.indexOfKey(IInterface::asBinder(bufferProducer));
         if (index != NAME_NOT_FOUND) {
-            String8 msg = String8::format("Camera %d: Surface already has a stream created "
-                    " for it (ID %zd)", mCameraId, index);
+            String8 msg = String8::format("Camera %s: Surface already has a stream created "
+                    " for it (ID %zd)", mCameraIdStr.string(), index);
             ALOGW("%s: %s", __FUNCTION__, msg.string());
             return STATUS_ERROR(CameraService::ERROR_ALREADY_EXISTS, msg.string());
         }
@@ -1110,12 +1120,12 @@
         mDeferredStreams.removeItemsAt(index);
     } else if (err == NO_INIT) {
         res = STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
-                "Camera %d: Deferred surface is invalid: %s (%d)",
-                mCameraId, strerror(-err), err);
+                "Camera %s: Deferred surface is invalid: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
     } else {
         res = STATUS_ERROR_FMT(CameraService::ERROR_INVALID_OPERATION,
-                "Camera %d: Error setting output stream deferred surface: %s (%d)",
-                mCameraId, strerror(-err), err);
+                "Camera %s: Error setting output stream deferred surface: %s (%d)",
+                mCameraIdStr.string(), strerror(-err), err);
     }
 
     return res;
@@ -1127,8 +1137,8 @@
 
 status_t CameraDeviceClient::dumpClient(int fd, const Vector<String16>& args) {
     String8 result;
-    result.appendFormat("CameraDeviceClient[%d] (%p) dump:\n",
-            mCameraId,
+    result.appendFormat("CameraDeviceClient[%s] (%p) dump:\n",
+            mCameraIdStr.string(),
             (getRemoteCallback() != NULL ?
                     IInterface::asBinder(getRemoteCallback()).get() : NULL) );
     result.appendFormat("  Current client UID %u\n", mClientUid);
@@ -1221,15 +1231,15 @@
 void CameraDeviceClient::detachDevice() {
     if (mDevice == 0) return;
 
-    ALOGV("Camera %d: Stopping processors", mCameraId);
+    ALOGV("Camera %s: Stopping processors", mCameraIdStr.string());
 
     mFrameProcessor->removeListener(FRAME_PROCESSOR_LISTENER_MIN_ID,
                                     FRAME_PROCESSOR_LISTENER_MAX_ID,
                                     /*listener*/this);
     mFrameProcessor->requestExit();
-    ALOGV("Camera %d: Waiting for threads", mCameraId);
+    ALOGV("Camera %s: Waiting for threads", mCameraIdStr.string());
     mFrameProcessor->join();
-    ALOGV("Camera %d: Disconnecting device", mCameraId);
+    ALOGV("Camera %s: Disconnecting device", mCameraIdStr.string());
 
     // WORKAROUND: HAL refuses to disconnect while there's streams in flight
     {
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.h b/services/camera/libcameraservice/api2/CameraDeviceClient.h
index 68e453c..2226dd2 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.h
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.h
@@ -42,7 +42,7 @@
     CameraDeviceClientBase(const sp<CameraService>& cameraService,
             const sp<hardware::camera2::ICameraDeviceCallbacks>& remoteCallback,
             const String16& clientPackageName,
-            int cameraId,
+            const String8& cameraId,
             int cameraFacing,
             int clientPid,
             uid_t clientUid,
@@ -142,14 +142,15 @@
     CameraDeviceClient(const sp<CameraService>& cameraService,
             const sp<hardware::camera2::ICameraDeviceCallbacks>& remoteCallback,
             const String16& clientPackageName,
-            int cameraId,
+            const String8& cameraId,
             int cameraFacing,
             int clientPid,
             uid_t clientUid,
             int servicePid);
     virtual ~CameraDeviceClient();
 
-    virtual status_t      initialize(CameraModule *module);
+    virtual status_t      initialize(CameraModule *module) override;
+    virtual status_t      initialize(sp<CameraProviderManager> manager) override;
 
     virtual status_t      dump(int fd, const Vector<String16>& args);
 
@@ -186,6 +187,9 @@
     static const int32_t FRAME_PROCESSOR_LISTENER_MIN_ID = 0;
     static const int32_t FRAME_PROCESSOR_LISTENER_MAX_ID = 0x7fffffffL;
 
+    template<typename TProviderPtr>
+    status_t      initializeImpl(TProviderPtr providerPtr);
+
     /** Utility members */
     binder::Status checkPidStatus(const char* checkLocation);
     bool enforceRequestPermissions(CameraMetadata& metadata);
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.cpp b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
index 7e26153..93a584b 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.cpp
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
@@ -47,7 +47,7 @@
         const sp<CameraService>& cameraService,
         const sp<TCamCallbacks>& remoteCallback,
         const String16& clientPackageName,
-        int cameraId,
+        const String8& cameraId,
         int cameraFacing,
         int clientPid,
         uid_t clientUid,
@@ -55,10 +55,10 @@
         TClientBase(cameraService, remoteCallback, clientPackageName,
                 cameraId, cameraFacing, clientPid, clientUid, servicePid),
         mSharedCameraCallbacks(remoteCallback),
-        mDeviceVersion(cameraService->getDeviceVersion(cameraId)),
+        mDeviceVersion(cameraService->getDeviceVersion(TClientBase::mCameraIdStr)),
         mDeviceActive(false)
 {
-    ALOGI("Camera %d: Opened. Client: %s (PID %d, UID %d)", cameraId,
+    ALOGI("Camera %s: Opened. Client: %s (PID %d, UID %d)", cameraId.string(),
             String8(clientPackageName).string(), clientPid, clientUid);
 
     mInitialClientPid = clientPid;
@@ -80,9 +80,20 @@
 
 template <typename TClientBase>
 status_t Camera2ClientBase<TClientBase>::initialize(CameraModule *module) {
+    return initializeImpl(module);
+}
+
+template <typename TClientBase>
+status_t Camera2ClientBase<TClientBase>::initialize(sp<CameraProviderManager> manager) {
+    return initializeImpl(manager);
+}
+
+template <typename TClientBase>
+template <typename TProviderPtr>
+status_t Camera2ClientBase<TClientBase>::initializeImpl(TProviderPtr providerPtr) {
     ATRACE_CALL();
-    ALOGV("%s: Initializing client for camera %d", __FUNCTION__,
-          TClientBase::mCameraId);
+    ALOGV("%s: Initializing client for camera %s", __FUNCTION__,
+          TClientBase::mCameraIdStr.string());
     status_t res;
 
     // Verify ops permissions
@@ -92,15 +103,15 @@
     }
 
     if (mDevice == NULL) {
-        ALOGE("%s: Camera %d: No device connected",
-                __FUNCTION__, TClientBase::mCameraId);
+        ALOGE("%s: Camera %s: No device connected",
+                __FUNCTION__, TClientBase::mCameraIdStr.string());
         return NO_INIT;
     }
 
-    res = mDevice->initialize(module);
+    res = mDevice->initialize(providerPtr);
     if (res != OK) {
-        ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
-                __FUNCTION__, TClientBase::mCameraId, strerror(-res), res);
+        ALOGE("%s: Camera %s: unable to initialize device: %s (%d)",
+                __FUNCTION__, TClientBase::mCameraIdStr.string(), strerror(-res), res);
         return res;
     }
 
@@ -118,8 +129,8 @@
 
     disconnect();
 
-    ALOGI("Closed Camera %d. Client was: %s (PID %d, UID %u)",
-            TClientBase::mCameraId,
+    ALOGI("Closed Camera %s. Client was: %s (PID %d, UID %u)",
+            TClientBase::mCameraIdStr.string(),
             String8(TClientBase::mClientPackageName).string(),
             mInitialClientPid, TClientBase::mClientUid);
 }
@@ -128,8 +139,8 @@
 status_t Camera2ClientBase<TClientBase>::dumpClient(int fd,
                                               const Vector<String16>& args) {
     String8 result;
-    result.appendFormat("Camera2ClientBase[%d] (%p) PID: %d, dump:\n",
-            TClientBase::mCameraId,
+    result.appendFormat("Camera2ClientBase[%s] (%p) PID: %d, dump:\n",
+            TClientBase::mCameraIdStr.string(),
             (TClientBase::getRemoteCallback() != NULL ?
                     IInterface::asBinder(TClientBase::getRemoteCallback()).get() : NULL),
             TClientBase::mClientPid);
@@ -180,13 +191,13 @@
     if (callingPid != TClientBase::mClientPid &&
         callingPid != TClientBase::mServicePid) return res;
 
-    ALOGV("Camera %d: Shutting down", TClientBase::mCameraId);
+    ALOGV("Camera %s: Shutting down", TClientBase::mCameraIdStr.string());
 
     detachDevice();
 
     CameraService::BasicClient::disconnect();
 
-    ALOGV("Camera %d: Shut down complete complete", TClientBase::mCameraId);
+    ALOGV("Camera %s: Shut down complete complete", TClientBase::mCameraIdStr.string());
 
     return res;
 }
@@ -198,7 +209,7 @@
 
     mDevice.clear();
 
-    ALOGV("Camera %d: Detach complete", TClientBase::mCameraId);
+    ALOGV("Camera %s: Detach complete", TClientBase::mCameraIdStr.string());
 }
 
 template <typename TClientBase>
@@ -211,10 +222,10 @@
     if (TClientBase::mClientPid != 0 &&
         getCallingPid() != TClientBase::mClientPid) {
 
-        ALOGE("%s: Camera %d: Connection attempt from pid %d; "
+        ALOGE("%s: Camera %s: Connection attempt from pid %d; "
                 "current locked to pid %d",
                 __FUNCTION__,
-                TClientBase::mCameraId,
+                TClientBase::mCameraIdStr.string(),
                 getCallingPid(),
                 TClientBase::mClientPid);
         return BAD_VALUE;
@@ -242,8 +253,7 @@
 void Camera2ClientBase<TClientBase>::notifyIdle() {
     if (mDeviceActive) {
         getCameraService()->updateProxyDeviceState(
-            ICameraServiceProxy::CAMERA_STATE_IDLE,
-            String8::format("%d", TClientBase::mCameraId));
+            ICameraServiceProxy::CAMERA_STATE_IDLE, TClientBase::mCameraIdStr);
     }
     mDeviceActive = false;
 
@@ -258,8 +268,7 @@
 
     if (!mDeviceActive) {
         getCameraService()->updateProxyDeviceState(
-            ICameraServiceProxy::CAMERA_STATE_ACTIVE,
-            String8::format("%d", TClientBase::mCameraId));
+            ICameraServiceProxy::CAMERA_STATE_ACTIVE, TClientBase::mCameraIdStr);
     }
     mDeviceActive = true;
 
@@ -322,7 +331,7 @@
 
 template <typename TClientBase>
 int Camera2ClientBase<TClientBase>::getCameraId() const {
-    return TClientBase::mCameraId;
+    return std::stoi(TClientBase::mCameraIdStr.string());
 }
 
 template <typename TClientBase>
@@ -337,7 +346,7 @@
 
 template <typename TClientBase>
 const sp<CameraService>& Camera2ClientBase<TClientBase>::getCameraService() {
-    return TClientBase::mCameraService;
+    return TClientBase::sCameraService;
 }
 
 template <typename TClientBase>
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.h b/services/camera/libcameraservice/common/Camera2ClientBase.h
index 9fd0a78..a4c08ef 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.h
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.h
@@ -49,7 +49,7 @@
     Camera2ClientBase(const sp<CameraService>& cameraService,
                       const sp<TCamCallbacks>& remoteCallback,
                       const String16& clientPackageName,
-                      int cameraId,
+                      const String8& cameraId,
                       int cameraFacing,
                       int clientPid,
                       uid_t clientUid,
@@ -57,6 +57,7 @@
     virtual ~Camera2ClientBase();
 
     virtual status_t      initialize(CameraModule *module);
+    virtual status_t      initialize(sp<CameraProviderManager> manager);
     virtual status_t      dumpClient(int fd, const Vector<String16>& args);
 
     /**
@@ -140,6 +141,10 @@
     virtual void          detachDevice();
 
     bool                  mDeviceActive;
+
+private:
+    template<typename TProviderPtr>
+    status_t              initializeImpl(TProviderPtr providerPtr);
 };
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/common/CameraDeviceBase.h b/services/camera/libcameraservice/common/CameraDeviceBase.h
index f30afe3..40b368e 100644
--- a/services/camera/libcameraservice/common/CameraDeviceBase.h
+++ b/services/camera/libcameraservice/common/CameraDeviceBase.h
@@ -35,6 +35,8 @@
 
 namespace android {
 
+class CameraProviderManager;
+
 /**
  * Base interface for version >= 2 camera device classes, which interface to
  * camera HAL device versions >= 2.
@@ -46,9 +48,10 @@
     /**
      * The device's camera ID
      */
-    virtual int      getId() const = 0;
+    virtual const String8& getId() const = 0;
 
     virtual status_t initialize(CameraModule *module) = 0;
+    virtual status_t initialize(sp<CameraProviderManager> manager) = 0;
     virtual status_t disconnect() = 0;
 
     virtual status_t dump(int fd, const Vector<String16> &args) = 0;
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.cpp b/services/camera/libcameraservice/common/CameraProviderManager.cpp
new file mode 100644
index 0000000..cb965b6
--- /dev/null
+++ b/services/camera/libcameraservice/common/CameraProviderManager.cpp
@@ -0,0 +1,974 @@
+/*
+ * 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 "CameraProviderManager"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+//#define LOG_NDEBUG 0
+
+#include "CameraProviderManager.h"
+
+#include <android/hidl/manager/1.0/IServiceManager.h>
+#include <hidl/ServiceManagement.h>
+
+namespace android {
+
+using namespace ::android::hardware::camera;
+using namespace ::android::hardware::camera::common::V1_0;
+
+namespace {
+// Hardcoded name for the passthrough HAL implementation, since it can't be discovered via the
+// service manager
+const std::string kLegacyProviderName("legacy/0");
+
+// Slash-separated list of provider types to consider for use via the old camera API
+const std::string kStandardProviderTypes("internal/legacy");
+
+} // anonymous namespace
+
+CameraProviderManager::HardwareServiceInteractionProxy
+CameraProviderManager::sHardwareServiceInteractionProxy{};
+
+CameraProviderManager::~CameraProviderManager() {
+}
+
+status_t CameraProviderManager::initialize(wp<CameraProviderManager::StatusListener> listener,
+        ServiceInteractionProxy* proxy) {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+    if (proxy == nullptr) {
+        ALOGE("%s: No valid service interaction proxy provided", __FUNCTION__);
+        return BAD_VALUE;
+    }
+    mListener = listener;
+    mServiceProxy = proxy;
+
+    // Registering will trigger notifications for all already-known providers
+    bool success = mServiceProxy->registerForNotifications(
+        /* instance name, empty means no filter */ "",
+        this);
+    if (!success) {
+        ALOGE("%s: Unable to register with hardware service manager for notifications "
+                "about camera providers", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+
+    // Also see if there's a passthrough HAL, but let's not complain if there's not
+    addProvider(kLegacyProviderName, /*expected*/ false);
+
+    return OK;
+}
+
+int CameraProviderManager::getCameraCount() const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+    int count = 0;
+    for (auto& provider : mProviders) {
+        count += provider->mDevices.size();
+    }
+    return count;
+}
+
+int CameraProviderManager::getStandardCameraCount() const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+    int count = 0;
+    for (auto& provider : mProviders) {
+        if (kStandardProviderTypes.find(provider->getType()) != std::string::npos) {
+            count += provider->mDevices.size();
+        }
+    }
+    return count;
+}
+
+std::vector<std::string> CameraProviderManager::getCameraDeviceIds() const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+    std::vector<std::string> deviceIds;
+    for (auto& provider : mProviders) {
+        for (auto& deviceInfo : provider->mDevices) {
+            deviceIds.push_back(deviceInfo->mId);
+        }
+    }
+    return deviceIds;
+}
+
+bool CameraProviderManager::isValidDevice(const std::string &id, uint16_t majorVersion) const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+    return isValidDeviceLocked(id, majorVersion);
+}
+
+bool CameraProviderManager::isValidDeviceLocked(const std::string &id, uint16_t majorVersion) const {
+    for (auto& provider : mProviders) {
+        for (auto& deviceInfo : provider->mDevices) {
+            if (deviceInfo->mId == id && deviceInfo->mVersion.get_major() == majorVersion) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+bool CameraProviderManager::hasFlashUnit(const std::string &id) const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id);
+    if (deviceInfo == nullptr) return false;
+
+    return deviceInfo->hasFlashUnit();
+}
+
+status_t CameraProviderManager::getResourceCost(const std::string &id,
+        CameraResourceCost* cost) const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id);
+    if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+    *cost = deviceInfo->mResourceCost;
+    return OK;
+}
+
+status_t CameraProviderManager::getCameraInfo(const std::string &id,
+        hardware::CameraInfo* info) const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id);
+    if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+    return deviceInfo->getCameraInfo(info);
+}
+
+status_t CameraProviderManager::getCameraCharacteristics(const std::string &id,
+        CameraMetadata* characteristics) const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id, /*minVersion*/ {3,0}, /*maxVersion*/ {4,0});
+    if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+    return deviceInfo->getCameraCharacteristics(characteristics);
+}
+
+status_t CameraProviderManager::getHighestSupportedVersion(const std::string &id,
+        hardware::hidl_version *v) {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    hardware::hidl_version maxVersion{0,0};
+    bool found = false;
+    for (auto& provider : mProviders) {
+        for (auto& deviceInfo : provider->mDevices) {
+            if (deviceInfo->mId == id) {
+                if (deviceInfo->mVersion > maxVersion) {
+                    maxVersion = deviceInfo->mVersion;
+                    found = true;
+                }
+            }
+        }
+    }
+    if (!found) {
+        return NAME_NOT_FOUND;
+    }
+    *v = maxVersion;
+    return OK;
+}
+
+status_t CameraProviderManager::setTorchMode(const std::string &id, bool enabled) {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id);
+    if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+    return deviceInfo->setTorchMode(enabled);
+}
+
+status_t CameraProviderManager::openSession(const std::string &id,
+        const sp<hardware::camera::device::V3_2::ICameraDeviceCallback>& callback,
+        /*out*/
+        sp<hardware::camera::device::V3_2::ICameraDeviceSession> *session) {
+
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id,
+            /*minVersion*/ {3,0}, /*maxVersion*/ {4,0});
+    if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+    auto *deviceInfo3 = static_cast<ProviderInfo::DeviceInfo3*>(deviceInfo);
+
+    Status status;
+    deviceInfo3->mInterface->open(callback, [&status, &session]
+            (Status s, const sp<device::V3_2::ICameraDeviceSession>& cameraSession) {
+                status = s;
+                if (status == Status::OK) {
+                    *session = cameraSession;
+                }
+            });
+    return mapToStatusT(status);
+}
+
+status_t CameraProviderManager::openSession(const std::string &id,
+        const sp<hardware::camera::device::V1_0::ICameraDeviceCallback>& callback,
+        /*out*/
+        sp<hardware::camera::device::V1_0::ICameraDevice> *session) {
+
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    auto deviceInfo = findDeviceInfoLocked(id,
+            /*minVersion*/ {1,0}, /*maxVersion*/ {2,0});
+    if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+    auto *deviceInfo1 = static_cast<ProviderInfo::DeviceInfo1*>(deviceInfo);
+
+    Status status = deviceInfo1->mInterface->open(callback);
+    if (status == Status::OK) {
+        *session = deviceInfo1->mInterface;
+    }
+    return mapToStatusT(status);
+}
+
+
+hardware::Return<void> CameraProviderManager::onRegistration(
+        const hardware::hidl_string& /*fqName*/,
+        const hardware::hidl_string& name,
+        bool /*preexisting*/) {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    addProvider(name);
+    return hardware::Return<void>();
+}
+
+status_t CameraProviderManager::dump(int fd, const Vector<String16>& args) {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+    dprintf(fd, "Available camera providers and devices:\n");
+    for (auto& provider : mProviders) {
+        provider->dump(fd, args);
+    }
+    return OK;
+}
+
+CameraProviderManager::ProviderInfo::DeviceInfo* CameraProviderManager::findDeviceInfoLocked(
+        const std::string& id,
+        hardware::hidl_version minVersion, hardware::hidl_version maxVersion) const {
+    for (auto& provider : mProviders) {
+        for (auto& deviceInfo : provider->mDevices) {
+            if (deviceInfo->mId == id &&
+                    minVersion <= deviceInfo->mVersion && maxVersion >= deviceInfo->mVersion) {
+                return deviceInfo.get();
+            }
+        }
+    }
+    return nullptr;
+}
+
+
+status_t CameraProviderManager::addProvider(const std::string& newProvider, bool expected) {
+    for (const auto& providerInfo : mProviders) {
+        if (providerInfo->mProviderName == newProvider) {
+            ALOGW("%s: Camera provider HAL with name '%s' already registered", __FUNCTION__,
+                    newProvider.c_str());
+            return ALREADY_EXISTS;
+        }
+    }
+    sp<provider::V2_4::ICameraProvider> interface =
+            mServiceProxy->getService(newProvider);
+
+    if (interface == nullptr) {
+        if (expected) {
+            ALOGW("%s: Camera provider HAL '%s' is not actually available", __FUNCTION__,
+                    newProvider.c_str());
+            return BAD_VALUE;
+        } else {
+            // Not guaranteed to be found, so not an error if it wasn't
+            return OK;
+        }
+    }
+
+    sp<ProviderInfo> providerInfo =
+            new ProviderInfo(newProvider, interface, this);
+    status_t res = providerInfo->initialize();
+    if (res != OK) {
+        return res;
+    }
+
+    mProviders.push_back(providerInfo);
+
+    return OK;
+}
+
+status_t CameraProviderManager::removeProvider(const std::string& provider) {
+    for (auto it = mProviders.begin(); it != mProviders.end(); it++) {
+        if ((*it)->mProviderName == provider) {
+            mProviders.erase(it);
+            return OK;
+        }
+    }
+    ALOGW("%s: Camera provider HAL with name '%s' is not registered", __FUNCTION__,
+            provider.c_str());
+    return NAME_NOT_FOUND;
+}
+
+/**** Methods for ProviderInfo ****/
+
+
+CameraProviderManager::ProviderInfo::ProviderInfo(
+        const std::string &providerName,
+        sp<provider::V2_4::ICameraProvider>& interface,
+        CameraProviderManager *manager) :
+        mProviderName(providerName),
+        mInterface(interface),
+        mManager(manager) {
+    (void) mManager;
+}
+
+status_t CameraProviderManager::ProviderInfo::initialize() {
+    status_t res = parseProviderName(mProviderName, &mType, &mId);
+    if (res != OK) {
+        ALOGE("%s: Invalid provider name, ignoring", __FUNCTION__);
+        return BAD_VALUE;
+    }
+    ALOGI("Connecting to new camera provider: %s", mProviderName.c_str());
+    Status status = mInterface->setCallback(this);
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to register callbacks with camera provider '%s'",
+                __FUNCTION__, mProviderName.c_str());
+        return mapToStatusT(status);
+    }
+    // TODO: Register for hw binder death notifications as well
+
+    // Get initial list of camera devices, if any
+    std::vector<std::string> devices;
+    mInterface->getCameraIdList([&status, &devices](
+            Status idStatus,
+            const hardware::hidl_vec<hardware::hidl_string>& cameraDeviceNames) {
+        status = idStatus;
+        if (status == Status::OK) {
+            for (size_t i = 0; i < cameraDeviceNames.size(); i++) {
+                devices.push_back(cameraDeviceNames[i]);
+            }
+        } });
+
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to query for camera devices from provider '%s'",
+                __FUNCTION__, mProviderName.c_str());
+        return mapToStatusT(status);
+    }
+
+    for (auto& device : devices) {
+        status_t res = addDevice(device);
+        if (res != OK) {
+            ALOGE("%s: Unable to enumerate camera device '%s': %s (%d)",
+                    __FUNCTION__, device.c_str(), strerror(-res), res);
+        }
+    }
+
+    ALOGI("Camera provider %s ready with %zu camera devices",
+            mProviderName.c_str(), mDevices.size());
+
+    return OK;
+}
+
+const std::string& CameraProviderManager::ProviderInfo::getType() const {
+    return mType;
+}
+
+status_t CameraProviderManager::ProviderInfo::addDevice(const std::string& name,
+        CameraDeviceStatus initialStatus, /*out*/ std::string* parsedId) {
+
+    ALOGI("Enumerating new camera device: %s", name.c_str());
+
+    uint16_t major, minor;
+    std::string type, id;
+
+    status_t res = parseDeviceName(name, &major, &minor, &type, &id);
+    if (res != OK) {
+        return res;
+    }
+    if (type != mType) {
+        ALOGE("%s: Device type %s does not match provider type %s", __FUNCTION__,
+                type.c_str(), mType.c_str());
+        return BAD_VALUE;
+    }
+    if (mManager->isValidDeviceLocked(id, major)) {
+        ALOGE("%s: Device %s: ID %s is already in use for device major version %d", __FUNCTION__,
+                name.c_str(), id.c_str(), major);
+        return BAD_VALUE;
+    }
+
+    std::unique_ptr<DeviceInfo> deviceInfo;
+    switch (major) {
+        case 1:
+            deviceInfo = initializeDeviceInfo<DeviceInfo1>(name, id, minor);
+            break;
+        case 3:
+            deviceInfo = initializeDeviceInfo<DeviceInfo3>(name, id, minor);
+            break;
+        default:
+            ALOGE("%s: Device %s: Unknown HIDL device HAL major version %d:", __FUNCTION__,
+                    name.c_str(), major);
+            return BAD_VALUE;
+    }
+    if (deviceInfo == nullptr) return BAD_VALUE;
+    deviceInfo->mStatus = initialStatus;
+
+    mDevices.push_back(std::move(deviceInfo));
+
+    if (parsedId != nullptr) {
+        *parsedId = id;
+    }
+    return OK;
+}
+
+status_t CameraProviderManager::ProviderInfo::dump(int fd, const Vector<String16>&) const {
+    dprintf(fd, "    %s: %zu devices:\n", mProviderName.c_str(), mDevices.size());
+
+    for (auto& device : mDevices) {
+        dprintf(fd, "        %s: Resource cost: %d\n", device->mName.c_str(),
+                device->mResourceCost.resourceCost);
+        if (device->mResourceCost.conflictingDevices.size() > 0) {
+            dprintf(fd, "            Conflicting devices:\n");
+            for (size_t i = 0; i < device->mResourceCost.conflictingDevices.size(); i++) {
+                dprintf(fd, "              %s\n",
+                        device->mResourceCost.conflictingDevices[i].c_str());
+            }
+        }
+    }
+    return OK;
+}
+
+hardware::Return<void> CameraProviderManager::ProviderInfo::cameraDeviceStatusChange(
+        const hardware::hidl_string& cameraDeviceName,
+        CameraDeviceStatus newStatus) {
+    sp<StatusListener> listener;
+    std::string id;
+    {
+        std::lock_guard<std::mutex> lock(mManager->mStatusListenerMutex);
+        bool known = false;
+        for (auto& deviceInfo : mDevices) {
+            if (deviceInfo->mName == cameraDeviceName) {
+                ALOGI("Camera device %s status is now %s, was %s", cameraDeviceName.c_str(),
+                        deviceStatusToString(newStatus), deviceStatusToString(deviceInfo->mStatus));
+                deviceInfo->mStatus = newStatus;
+                // TODO: Handle device removal (NOT_PRESENT)
+                id = deviceInfo->mId;
+                known = true;
+                break;
+            }
+        }
+        // Previously unseen device; status must not be NOT_PRESENT
+        if (!known) {
+            if (newStatus == CameraDeviceStatus::NOT_PRESENT) {
+                ALOGW("Camera provider %s says an unknown camera device %s is not present. Curious.",
+                    mProviderName.c_str(), cameraDeviceName.c_str());
+                return hardware::Void();
+            }
+            addDevice(cameraDeviceName, newStatus, &id);
+        }
+        listener = mManager->mListener.promote();
+    }
+    // Call without lock held to allow reentrancy into provider manager
+    if (listener != nullptr) {
+        listener->onDeviceStatusChanged(String8(id.c_str()), newStatus);
+    }
+    return hardware::Void();
+}
+
+hardware::Return<void> CameraProviderManager::ProviderInfo::torchModeStatusChange(
+        const hardware::hidl_string& cameraDeviceName,
+        TorchModeStatus newStatus) {
+    sp<StatusListener> listener;
+    std::string id;
+    {
+        std::lock_guard<std::mutex> lock(mManager->mStatusListenerMutex);
+        bool known = false;
+        for (auto& deviceInfo : mDevices) {
+            if (deviceInfo->mName == cameraDeviceName) {
+                ALOGI("Camera device %s torch status is now %s", cameraDeviceName.c_str(),
+                        torchStatusToString(newStatus));
+                id = deviceInfo->mId;
+                known = true;
+                break;
+            }
+        }
+        if (!known) {
+            ALOGW("Camera provider %s says an unknown camera %s now has torch status %d. Curious.",
+                    mProviderName.c_str(), cameraDeviceName.c_str(), newStatus);
+            return hardware::Void();
+        }
+        listener = mManager->mListener.promote();
+    }
+    // Call without lock held to allow reentrancy into provider manager
+    if (listener != nullptr) {
+        listener->onTorchStatusChanged(String8(id.c_str()), newStatus);
+    }
+    return hardware::Void();
+}
+
+
+template<class DeviceInfoT>
+std::unique_ptr<CameraProviderManager::ProviderInfo::DeviceInfo>
+    CameraProviderManager::ProviderInfo::initializeDeviceInfo(
+        const std::string &name,
+        const std::string &id, uint16_t minorVersion) const {
+    Status status;
+
+    auto cameraInterface =
+            getDeviceInterface<typename DeviceInfoT::InterfaceT>(name);
+    if (cameraInterface == nullptr) return nullptr;
+
+    CameraResourceCost resourceCost;
+    cameraInterface->getResourceCost([&status, &resourceCost](
+        Status s, CameraResourceCost cost) {
+                status = s;
+                resourceCost = cost;
+            });
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to obtain resource costs for camera device %s: %s", __FUNCTION__,
+                name.c_str(), statusToString(status));
+        return nullptr;
+    }
+    return std::unique_ptr<DeviceInfo>(
+        new DeviceInfoT(name, id, minorVersion, resourceCost, cameraInterface));
+}
+
+template<class InterfaceT>
+sp<InterfaceT>
+CameraProviderManager::ProviderInfo::getDeviceInterface(const std::string &name) const {
+    ALOGE("%s: Device %s: Unknown HIDL device HAL major version %d:", __FUNCTION__,
+            name.c_str(), InterfaceT::version.get_major());
+    return nullptr;
+}
+
+template<>
+sp<device::V1_0::ICameraDevice>
+CameraProviderManager::ProviderInfo::getDeviceInterface
+        <device::V1_0::ICameraDevice>(const std::string &name) const {
+    Status status;
+    sp<device::V1_0::ICameraDevice> cameraInterface;
+    mInterface->getCameraDeviceInterface_V1_x(name, [&status, &cameraInterface](
+        Status s, sp<device::V1_0::ICameraDevice> interface) {
+                status = s;
+                cameraInterface = interface;
+            });
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to obtain interface for camera device %s: %s", __FUNCTION__,
+                name.c_str(), statusToString(status));
+        return nullptr;
+    }
+    return cameraInterface;
+}
+
+template<>
+sp<device::V3_2::ICameraDevice>
+CameraProviderManager::ProviderInfo::getDeviceInterface
+        <device::V3_2::ICameraDevice>(const std::string &name) const {
+    Status status;
+    sp<device::V3_2::ICameraDevice> cameraInterface;
+    mInterface->getCameraDeviceInterface_V3_x(name, [&status, &cameraInterface](
+        Status s, sp<device::V3_2::ICameraDevice> interface) {
+                status = s;
+                cameraInterface = interface;
+            });
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to obtain interface for camera device %s: %s", __FUNCTION__,
+                name.c_str(), statusToString(status));
+        return nullptr;
+    }
+    return cameraInterface;
+}
+
+CameraProviderManager::ProviderInfo::DeviceInfo::~DeviceInfo() {}
+
+template<class InterfaceT>
+status_t CameraProviderManager::ProviderInfo::DeviceInfo::setTorchMode(InterfaceT& interface,
+        bool enabled) {
+    Status s = interface->setTorchMode(enabled ? TorchMode::ON : TorchMode::OFF);
+    return mapToStatusT(s);
+}
+
+CameraProviderManager::ProviderInfo::DeviceInfo1::DeviceInfo1(const std::string& name,
+        const std::string &id,
+        uint16_t minorVersion,
+        const CameraResourceCost& resourceCost,
+        sp<InterfaceT> interface) :
+        DeviceInfo(name, id, hardware::hidl_version{1, minorVersion}, resourceCost),
+        mInterface(interface) {
+    // Get default parameters and initialize flash unit availability
+    // Requires powering on the camera device
+    Status status = mInterface->open(nullptr);
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to open camera device %s to check for a flash unit: %s (%d)", __FUNCTION__,
+                mId.c_str(), CameraProviderManager::statusToString(status), status);
+        return;
+    }
+    mInterface->getParameters([this](const hardware::hidl_string& parms) {
+                mDefaultParameters.unflatten(String8(parms.c_str()));
+            });
+
+    const char *flashMode =
+            mDefaultParameters.get(CameraParameters::KEY_SUPPORTED_FLASH_MODES);
+    if (flashMode && strstr(flashMode, CameraParameters::FLASH_MODE_TORCH)) {
+        mHasFlashUnit = true;
+    } else {
+        mHasFlashUnit = false;
+    }
+
+    mInterface->close();
+}
+
+CameraProviderManager::ProviderInfo::DeviceInfo1::~DeviceInfo1() {}
+
+status_t CameraProviderManager::ProviderInfo::DeviceInfo1::setTorchMode(bool enabled) {
+    return DeviceInfo::setTorchMode(mInterface, enabled);
+}
+
+status_t CameraProviderManager::ProviderInfo::DeviceInfo1::getCameraInfo(
+        hardware::CameraInfo *info) const {
+    if (info == nullptr) return BAD_VALUE;
+
+    Status status;
+    device::V1_0::CameraInfo cInfo;
+    mInterface->getCameraInfo([&status, &cInfo](Status s, device::V1_0::CameraInfo camInfo) {
+                status = s;
+                cInfo = camInfo;
+            });
+    if (status != Status::OK) {
+        return mapToStatusT(status);
+    }
+
+    switch(cInfo.facing) {
+        case device::V1_0::CameraFacing::BACK:
+            info->facing = hardware::CAMERA_FACING_BACK;
+            break;
+        case device::V1_0::CameraFacing::EXTERNAL:
+            // Map external to front for legacy API
+        case device::V1_0::CameraFacing::FRONT:
+            info->facing = hardware::CAMERA_FACING_FRONT;
+            break;
+        default:
+            ALOGW("%s: Unknown camera facing: %d", __FUNCTION__, cInfo.facing);
+            info->facing = hardware::CAMERA_FACING_BACK;
+    }
+    info->orientation = cInfo.orientation;
+
+    return OK;
+}
+
+CameraProviderManager::ProviderInfo::DeviceInfo3::DeviceInfo3(const std::string& name,
+        const std::string &id,
+        uint16_t minorVersion,
+        const CameraResourceCost& resourceCost,
+        sp<InterfaceT> interface) :
+        DeviceInfo(name, id, hardware::hidl_version{3, minorVersion}, resourceCost),
+        mInterface(interface) {
+    // Get camera characteristics and initialize flash unit availability
+    Status status;
+    mInterface->getCameraCharacteristics([&status, this](Status s,
+                    device::V3_2::CameraMetadata metadata) {
+                status = s;
+                if (s == Status::OK) {
+                    camera_metadata_t *buffer =
+                            reinterpret_cast<camera_metadata_t*>(metadata.data());
+                    mCameraCharacteristics = buffer;
+                }
+            });
+    if (status != Status::OK) {
+        ALOGE("%s: Unable to get camera characteristics for device %s: %s (%d)",
+                __FUNCTION__, mId.c_str(), CameraProviderManager::statusToString(status), status);
+        return;
+    }
+    camera_metadata_entry flashAvailable =
+            mCameraCharacteristics.find(ANDROID_FLASH_INFO_AVAILABLE);
+    if (flashAvailable.count == 1 &&
+            flashAvailable.data.u8[0] == ANDROID_FLASH_INFO_AVAILABLE_TRUE) {
+        mHasFlashUnit = true;
+    } else {
+        mHasFlashUnit = false;
+    }
+}
+
+CameraProviderManager::ProviderInfo::DeviceInfo3::~DeviceInfo3() {}
+
+status_t CameraProviderManager::ProviderInfo::DeviceInfo3::setTorchMode(bool enabled) {
+    return DeviceInfo::setTorchMode(mInterface, enabled);
+}
+
+status_t CameraProviderManager::ProviderInfo::DeviceInfo3::getCameraInfo(
+        hardware::CameraInfo *info) const {
+    if (info == nullptr) return BAD_VALUE;
+
+    camera_metadata_ro_entry facing =
+            mCameraCharacteristics.find(ANDROID_LENS_FACING);
+    if (facing.count == 1) {
+        switch (facing.data.u8[0]) {
+            case ANDROID_LENS_FACING_BACK:
+                info->facing = hardware::CAMERA_FACING_BACK;
+                break;
+            case ANDROID_LENS_FACING_EXTERNAL:
+                // Map external to front for legacy API
+            case ANDROID_LENS_FACING_FRONT:
+                info->facing = hardware::CAMERA_FACING_FRONT;
+                break;
+        }
+    } else {
+        ALOGE("%s: Unable to find android.lens.facing static metadata", __FUNCTION__);
+        return NAME_NOT_FOUND;
+    }
+
+    camera_metadata_ro_entry orientation =
+            mCameraCharacteristics.find(ANDROID_SENSOR_ORIENTATION);
+    if (orientation.count == 1) {
+        info->orientation = orientation.data.i32[0];
+    } else {
+        ALOGE("%s: Unable to find android.sensor.orientation static metadata", __FUNCTION__);
+        return NAME_NOT_FOUND;
+    }
+
+    return OK;
+}
+
+status_t CameraProviderManager::ProviderInfo::DeviceInfo3::getCameraCharacteristics(
+        CameraMetadata *characteristics) const {
+    if (characteristics == nullptr) return BAD_VALUE;
+
+    *characteristics = mCameraCharacteristics;
+    return OK;
+}
+
+status_t CameraProviderManager::ProviderInfo::parseProviderName(const std::string& name,
+        std::string *type, uint32_t *id) {
+    // Format must be "<type>/<id>"
+#define ERROR_MSG_PREFIX "%s: Invalid provider name '%s'. "       \
+    "Should match '<type>/<id>' - "
+
+    if (!type || !id) return INVALID_OPERATION;
+
+    std::string::size_type slashIdx = name.find('/');
+    if (slashIdx == std::string::npos || slashIdx == name.size() - 1) {
+        ALOGE(ERROR_MSG_PREFIX
+                "does not have / separator between type and id",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+
+    std::string typeVal = name.substr(0, slashIdx);
+
+    char *endPtr;
+    errno = 0;
+    long idVal = strtol(name.c_str() + slashIdx + 1, &endPtr, 10);
+    if (errno != 0) {
+        ALOGE(ERROR_MSG_PREFIX
+                "cannot parse provider id as an integer: %s (%d)",
+                __FUNCTION__, name.c_str(), strerror(errno), errno);
+        return BAD_VALUE;
+    }
+    if (endPtr != name.c_str() + name.size()) {
+        ALOGE(ERROR_MSG_PREFIX
+                "provider id has unexpected length",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+    if (idVal < 0) {
+        ALOGE(ERROR_MSG_PREFIX
+                "id is negative: %ld",
+                __FUNCTION__, name.c_str(), idVal);
+        return BAD_VALUE;
+    }
+
+#undef ERROR_MSG_PREFIX
+
+    *type = typeVal;
+    *id = static_cast<uint32_t>(idVal);
+
+    return OK;
+}
+
+status_t CameraProviderManager::ProviderInfo::parseDeviceName(const std::string& name,
+        uint16_t *major, uint16_t *minor, std::string *type, std::string *id) {
+
+    // Format must be "device@<major>.<minor>/<type>/<id>"
+
+#define ERROR_MSG_PREFIX "%s: Invalid device name '%s'. " \
+    "Should match 'device@<major>.<minor>/<type>/<id>' - "
+
+    if (!major || !minor || !type || !id) return INVALID_OPERATION;
+
+    // Verify starting prefix
+    const char expectedPrefix[] = "device@";
+
+    if (name.find(expectedPrefix) != 0) {
+        ALOGE(ERROR_MSG_PREFIX
+                "does not start with '%s'",
+                __FUNCTION__, name.c_str(), expectedPrefix);
+        return BAD_VALUE;
+    }
+
+    // Extract major/minor versions
+    constexpr std::string::size_type atIdx = sizeof(expectedPrefix) - 2;
+    std::string::size_type dotIdx = name.find('.', atIdx);
+    if (dotIdx == std::string::npos) {
+        ALOGE(ERROR_MSG_PREFIX
+                "does not have @<major>. version section",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+    std::string::size_type typeSlashIdx = name.find('/', dotIdx);
+    if (typeSlashIdx == std::string::npos) {
+        ALOGE(ERROR_MSG_PREFIX
+                "does not have .<minor>/ version section",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+
+    char *endPtr;
+    errno = 0;
+    long majorVal = strtol(name.c_str() + atIdx + 1, &endPtr, 10);
+    if (errno != 0) {
+        ALOGE(ERROR_MSG_PREFIX
+                "cannot parse major version: %s (%d)",
+                __FUNCTION__, name.c_str(), strerror(errno), errno);
+        return BAD_VALUE;
+    }
+    if (endPtr != name.c_str() + dotIdx) {
+        ALOGE(ERROR_MSG_PREFIX
+                "major version has unexpected length",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+    long minorVal = strtol(name.c_str() + dotIdx + 1, &endPtr, 10);
+    if (errno != 0) {
+        ALOGE(ERROR_MSG_PREFIX
+                "cannot parse minor version: %s (%d)",
+                __FUNCTION__, name.c_str(), strerror(errno), errno);
+        return BAD_VALUE;
+    }
+    if (endPtr != name.c_str() + typeSlashIdx) {
+        ALOGE(ERROR_MSG_PREFIX
+                "minor version has unexpected length",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+    if (majorVal < 0 || majorVal > UINT16_MAX || minorVal < 0 || minorVal > UINT16_MAX) {
+        ALOGE(ERROR_MSG_PREFIX
+                "major/minor version is out of range of uint16_t: %ld.%ld",
+                __FUNCTION__, name.c_str(), majorVal, minorVal);
+        return BAD_VALUE;
+    }
+
+    // Extract type and id
+
+    std::string::size_type instanceSlashIdx = name.find('/', typeSlashIdx + 1);
+    if (instanceSlashIdx == std::string::npos) {
+        ALOGE(ERROR_MSG_PREFIX
+                "does not have /<type>/ component",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+    std::string typeVal = name.substr(typeSlashIdx + 1, instanceSlashIdx - typeSlashIdx - 1);
+
+    if (instanceSlashIdx == name.size() - 1) {
+        ALOGE(ERROR_MSG_PREFIX
+                "does not have an /<id> component",
+                __FUNCTION__, name.c_str());
+        return BAD_VALUE;
+    }
+    std::string idVal = name.substr(instanceSlashIdx + 1);
+
+#undef ERROR_MSG_PREFIX
+
+    *major = static_cast<uint16_t>(majorVal);
+    *minor = static_cast<uint16_t>(minorVal);
+    *type = typeVal;
+    *id = idVal;
+
+    return OK;
+}
+
+
+
+CameraProviderManager::ProviderInfo::~ProviderInfo() {
+    // Destruction of ProviderInfo is only supposed to happen when the respective
+    // CameraProvider interface dies, so do not unregister callbacks.
+
+}
+
+status_t CameraProviderManager::mapToStatusT(const Status& s)  {
+    switch(s) {
+        case Status::OK:
+            return OK;
+        case Status::ILLEGAL_ARGUMENT:
+            return BAD_VALUE;
+        case Status::CAMERA_IN_USE:
+            return -EBUSY;
+        case Status::MAX_CAMERAS_IN_USE:
+            return -EUSERS;
+        case Status::METHOD_NOT_SUPPORTED:
+            return UNKNOWN_TRANSACTION;
+        case Status::OPERATION_NOT_SUPPORTED:
+            return INVALID_OPERATION;
+        case Status::CAMERA_DISCONNECTED:
+            return DEAD_OBJECT;
+        case Status::INTERNAL_ERROR:
+            return INVALID_OPERATION;
+    }
+    ALOGW("Unexpected HAL status code %d", s);
+    return INVALID_OPERATION;
+}
+
+const char* CameraProviderManager::statusToString(const Status& s) {
+    switch(s) {
+        case Status::OK:
+            return "OK";
+        case Status::ILLEGAL_ARGUMENT:
+            return "ILLEGAL_ARGUMENT";
+        case Status::CAMERA_IN_USE:
+            return "CAMERA_IN_USE";
+        case Status::MAX_CAMERAS_IN_USE:
+            return "MAX_CAMERAS_IN_USE";
+        case Status::METHOD_NOT_SUPPORTED:
+            return "METHOD_NOT_SUPPORTED";
+        case Status::OPERATION_NOT_SUPPORTED:
+            return "OPERATION_NOT_SUPPORTED";
+        case Status::CAMERA_DISCONNECTED:
+            return "CAMERA_DISCONNECTED";
+        case Status::INTERNAL_ERROR:
+            return "INTERNAL_ERROR";
+    }
+    ALOGW("Unexpected HAL status code %d", s);
+    return "UNKNOWN_ERROR";
+}
+
+const char* CameraProviderManager::deviceStatusToString(const CameraDeviceStatus& s) {
+    switch(s) {
+        case CameraDeviceStatus::NOT_PRESENT:
+            return "NOT_PRESENT";
+        case CameraDeviceStatus::PRESENT:
+            return "PRESENT";
+        case CameraDeviceStatus::ENUMERATING:
+            return "ENUMERATING";
+    }
+    ALOGW("Unexpected HAL device status code %d", s);
+    return "UNKNOWN_STATUS";
+}
+
+const char* CameraProviderManager::torchStatusToString(const TorchModeStatus& s) {
+    switch(s) {
+        case TorchModeStatus::NOT_AVAILABLE:
+            return "NOT_AVAILABLE";
+        case TorchModeStatus::AVAILABLE_OFF:
+            return "AVAILABLE_OFF";
+        case TorchModeStatus::AVAILABLE_ON:
+            return "AVAILABLE_ON";
+    }
+    ALOGW("Unexpected HAL torch mode status code %d", s);
+    return "UNKNOWN_STATUS";
+}
+
+} // namespace android
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.h b/services/camera/libcameraservice/common/CameraProviderManager.h
new file mode 100644
index 0000000..641dab4
--- /dev/null
+++ b/services/camera/libcameraservice/common/CameraProviderManager.h
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SERVERS_CAMERA_CAMERAPROVIDER_H
+#define ANDROID_SERVERS_CAMERA_CAMERAPROVIDER_H
+
+#include <vector>
+#include <string>
+#include <mutex>
+
+#include <camera/CameraParameters2.h>
+#include <camera/CameraMetadata.h>
+#include <camera/CameraBase.h>
+#include <utils/Errors.h>
+#include <android/hardware/camera/common/1.0/types.h>
+#include <android/hardware/camera/provider/2.4/ICameraProvider.h>
+//#include <android/hardware/camera/provider/2.4/ICameraProviderCallbacks.h>
+#include <android/hidl/manager/1.0/IServiceNotification.h>
+
+namespace android {
+
+/**
+ * A manager for all camera providers available on an Android device.
+ *
+ * Responsible for enumerating providers and the individual camera devices
+ * they export, both at startup and as providers and devices are added/removed.
+ *
+ * Provides methods for requesting information about individual devices and for
+ * opening them for active use.
+ *
+ */
+class CameraProviderManager : virtual public hidl::manager::V1_0::IServiceNotification {
+public:
+
+    ~CameraProviderManager();
+
+    // Tiny proxy for the static methods in a HIDL interface that communicate with the hardware
+    // service manager, to be replacable in unit tests with a fake.
+    struct ServiceInteractionProxy {
+        virtual bool registerForNotifications(
+                const std::string &serviceName,
+                const sp<hidl::manager::V1_0::IServiceNotification>
+                &notification) = 0;
+        virtual sp<hardware::camera::provider::V2_4::ICameraProvider> getService(
+                const std::string &serviceName) = 0;
+        virtual ~ServiceInteractionProxy() {}
+    };
+
+    // Standard use case - call into the normal generated static methods which invoke
+    // the real hardware service manager
+    struct HardwareServiceInteractionProxy : public ServiceInteractionProxy {
+        virtual bool registerForNotifications(
+                const std::string &serviceName,
+                const sp<hidl::manager::V1_0::IServiceNotification>
+                &notification) override {
+            return hardware::camera::provider::V2_4::ICameraProvider::registerForNotifications(
+                    serviceName, notification);
+        }
+        virtual sp<hardware::camera::provider::V2_4::ICameraProvider> getService(
+                const std::string &serviceName) override {
+            return hardware::camera::provider::V2_4::ICameraProvider::getService(serviceName);
+        }
+    };
+
+    /**
+     * Listener interface for device/torch status changes
+     */
+    struct StatusListener : virtual public RefBase {
+        ~StatusListener() {}
+
+        virtual void onDeviceStatusChanged(const String8 &cameraId,
+                hardware::camera::common::V1_0::CameraDeviceStatus newStatus) = 0;
+        virtual void onTorchStatusChanged(const String8 &cameraId,
+                hardware::camera::common::V1_0::TorchModeStatus newStatus) = 0;
+    };
+
+    /**
+     * Initialize the manager and give it a status listener; optionally accepts a service
+     * interaction proxy.
+     *
+     * The default proxy communicates via the hardware service manager; alternate proxies can be
+     * used for testing. The lifetime of the proxy must exceed the lifetime of the manager.
+     */
+    status_t initialize(wp<StatusListener> listener,
+            ServiceInteractionProxy *proxy = &sHardwareServiceInteractionProxy);
+
+    /**
+     * Retrieve the total number of available cameras. This value may change dynamically as cameras
+     * are added or removed.
+     */
+    int getCameraCount() const;
+
+    /**
+     * Retrieve the number of 'standard' cameras; these are internal and
+     * backwards-compatible. This is the set of cameras that will be
+     * accessible via the old camera API, with IDs in range of
+     * [0, getStandardCameraCount()-1]. This value is not expected to change dynamically.
+     */
+    int getStandardCameraCount() const;
+
+    std::vector<std::string> getCameraDeviceIds() const;
+
+    /**
+     * Return true if a device with a given ID and major version exists
+     */
+    bool isValidDevice(const std::string &id, uint16_t majorVersion) const;
+
+    /**
+     * Return true if a device with a given ID has a flash unit. Returns false
+     * for devices that are unknown.
+     */
+    bool hasFlashUnit(const std::string &id) const;
+
+    /**
+     * Return the resource cost of this camera device
+     */
+    status_t getResourceCost(const std::string &id,
+            hardware::camera::common::V1_0::CameraResourceCost* cost) const;
+
+    /**
+     * Return the old camera API camera info
+     */
+    status_t getCameraInfo(const std::string &id,
+            hardware::CameraInfo* info) const;
+
+    /**
+     * Return API2 camera characteristics - returns NAME_NOT_FOUND if a device ID does
+     * not have a v3 or newer HAL version.
+     */
+    status_t getCameraCharacteristics(const std::string &id,
+            CameraMetadata* characteristics) const;
+
+    /**
+     * Return the highest supported device interface version for this ID
+     */
+    status_t getHighestSupportedVersion(const std::string &id,
+            hardware::hidl_version *v);
+
+    /**
+     * Turn on or off the flashlight on a given camera device.
+     * May fail if the device is in active use, or if the device doesn't exist, etc.
+     */
+    status_t setTorchMode(const std::string &id, bool enabled);
+
+    /**
+     * Open an active session to a camera device.
+     *
+     * This fully powers on the camera device hardware, and returns a handle to a
+     * session to be used for hardware configuration and operation.
+     */
+    status_t openSession(const std::string &id,
+            const sp<hardware::camera::device::V3_2::ICameraDeviceCallback>& callback,
+            /*out*/
+            sp<hardware::camera::device::V3_2::ICameraDeviceSession> *session);
+
+    status_t openSession(const std::string &id,
+            const sp<hardware::camera::device::V1_0::ICameraDeviceCallback>& callback,
+            /*out*/
+            sp<hardware::camera::device::V1_0::ICameraDevice> *session);
+
+    /**
+     * IServiceNotification::onRegistration
+     * Invoked by the hardware service manager when a new camera provider is registered
+     */
+    virtual hardware::Return<void> onRegistration(const hardware::hidl_string& fqName,
+            const hardware::hidl_string& name,
+            bool preexisting) override;
+
+    /**
+     * Dump out information about available providers and devices
+     */
+    status_t dump(int fd, const Vector<String16>& args);
+
+    /**
+     * Conversion methods between HAL Status and status_t and strings
+     */
+    static status_t mapToStatusT(const hardware::camera::common::V1_0::Status& s);
+    static const char* statusToString(const hardware::camera::common::V1_0::Status& s);
+
+private:
+    // All private members, unless otherwise noted, expect mInterfaceMutex to be locked before use
+    mutable std::mutex mInterfaceMutex;
+
+    // the status listener update callbacks will lock mStatusMutex
+    mutable std::mutex mStatusListenerMutex;
+    wp<StatusListener> mListener;
+    ServiceInteractionProxy* mServiceProxy;
+
+    static HardwareServiceInteractionProxy sHardwareServiceInteractionProxy;
+
+    struct ProviderInfo : virtual public hardware::camera::provider::V2_4::ICameraProviderCallback {
+        const std::string mProviderName;
+        const sp<hardware::camera::provider::V2_4::ICameraProvider> mInterface;
+
+        ProviderInfo(const std::string &providerName,
+                sp<hardware::camera::provider::V2_4::ICameraProvider>& interface,
+                CameraProviderManager *manager);
+        ~ProviderInfo();
+
+        status_t initialize();
+
+        const std::string& getType() const;
+
+        status_t addDevice(const std::string& name,
+                hardware::camera::common::V1_0::CameraDeviceStatus initialStatus =
+                hardware::camera::common::V1_0::CameraDeviceStatus::PRESENT,
+                /*out*/ std::string *parsedId = nullptr);
+
+        status_t dump(int fd, const Vector<String16>& args) const;
+
+        // ICameraProviderCallbacks interface - these lock the parent mInterfaceMutex
+        virtual hardware::Return<void> cameraDeviceStatusChange(
+                const hardware::hidl_string& cameraDeviceName,
+                hardware::camera::common::V1_0::CameraDeviceStatus newStatus) override;
+        virtual hardware::Return<void> torchModeStatusChange(
+                const hardware::hidl_string& cameraDeviceName,
+                hardware::camera::common::V1_0::TorchModeStatus newStatus) override;
+
+        // Basic device information, common to all camera devices
+        struct DeviceInfo {
+            const std::string mName;  // Full instance name
+            const std::string mId;    // ID section of full name
+            const hardware::hidl_version mVersion;
+
+            const hardware::camera::common::V1_0::CameraResourceCost mResourceCost;
+
+            hardware::camera::common::V1_0::CameraDeviceStatus mStatus;
+
+            bool hasFlashUnit() const { return mHasFlashUnit; }
+            virtual status_t setTorchMode(bool enabled) = 0;
+            virtual status_t getCameraInfo(hardware::CameraInfo *info) const = 0;
+            virtual status_t getCameraCharacteristics(CameraMetadata *characteristics) const {
+                (void) characteristics;
+                return INVALID_OPERATION;
+            }
+
+            DeviceInfo(const std::string& name, const std::string &id,
+                    const hardware::hidl_version& version,
+                    const hardware::camera::common::V1_0::CameraResourceCost& resourceCost) :
+                    mName(name), mId(id), mVersion(version), mResourceCost(resourceCost),
+                    mStatus(hardware::camera::common::V1_0::CameraDeviceStatus::PRESENT),
+                    mHasFlashUnit(false) {}
+            virtual ~DeviceInfo();
+        protected:
+            bool mHasFlashUnit;
+
+            template<class InterfaceT>
+            static status_t setTorchMode(InterfaceT& interface, bool enabled);
+        };
+        std::vector<std::unique_ptr<DeviceInfo>> mDevices;
+
+        // HALv1-specific camera fields, including the actual device interface
+        struct DeviceInfo1 : public DeviceInfo {
+            typedef hardware::camera::device::V1_0::ICameraDevice InterfaceT;
+            const sp<InterfaceT> mInterface;
+
+            virtual status_t setTorchMode(bool enabled) override;
+            virtual status_t getCameraInfo(hardware::CameraInfo *info) const override;
+
+            DeviceInfo1(const std::string& name, const std::string &id,
+                    uint16_t minorVersion,
+                    const hardware::camera::common::V1_0::CameraResourceCost& resourceCost,
+                    sp<InterfaceT> interface);
+            virtual ~DeviceInfo1();
+        private:
+            CameraParameters2 mDefaultParameters;
+        };
+
+        // HALv3-specific camera fields, including the actual device interface
+        struct DeviceInfo3 : public DeviceInfo {
+            typedef hardware::camera::device::V3_2::ICameraDevice InterfaceT;
+            const sp<InterfaceT> mInterface;
+
+            virtual status_t setTorchMode(bool enabled) override;
+            virtual status_t getCameraInfo(hardware::CameraInfo *info) const override;
+            virtual status_t getCameraCharacteristics(
+                    CameraMetadata *characteristics) const override;
+
+            DeviceInfo3(const std::string& name, const std::string &id,
+                    uint16_t minorVersion,
+                    const hardware::camera::common::V1_0::CameraResourceCost& resourceCost,
+                    sp<InterfaceT> interface);
+            virtual ~DeviceInfo3();
+        private:
+            CameraMetadata mCameraCharacteristics;
+        };
+
+    private:
+        std::string mType;
+        uint32_t mId;
+
+        CameraProviderManager *mManager;
+
+        // Templated method to instantiate the right kind of DeviceInfo and call the
+        // right CameraProvider getCameraDeviceInterface_* method.
+        template<class DeviceInfoT>
+        std::unique_ptr<DeviceInfo> initializeDeviceInfo(const std::string &name,
+                const std::string &id, uint16_t minorVersion) const;
+
+        // Helper for initializeDeviceInfo to use the right CameraProvider get method.
+        template<class InterfaceT>
+        sp<InterfaceT> getDeviceInterface(const std::string &name) const;
+
+        // Parse provider instance name for type and id
+        static status_t parseProviderName(const std::string& name,
+                std::string *type, uint32_t *id);
+
+        // Parse device instance name for device version, type, and id.
+        static status_t parseDeviceName(const std::string& name,
+                uint16_t *major, uint16_t *minor, std::string *type, std::string *id);
+    };
+
+    // Utility to find a DeviceInfo by ID; pointer is only valid while mInterfaceMutex is held
+    // and the calling code doesn't mutate the list of providers or their lists of devices.
+    // Finds the first device of the given ID that falls within the requested version range
+    //   minVersion <= deviceVersion < maxVersion
+    // No guarantees on the order of traversal
+    ProviderInfo::DeviceInfo* findDeviceInfoLocked(const std::string& id,
+            hardware::hidl_version minVersion = hardware::hidl_version{0,0},
+            hardware::hidl_version maxVersion = hardware::hidl_version{1000,0}) const;
+
+    status_t addProvider(const std::string& newProvider, bool expected = true);
+    status_t removeProvider(const std::string& provider);
+
+    bool isValidDeviceLocked(const std::string &id, uint16_t majorVersion) const;
+
+    std::vector<sp<ProviderInfo>> mProviders;
+
+    static const char* deviceStatusToString(
+        const hardware::camera::common::V1_0::CameraDeviceStatus&);
+    static const char* torchStatusToString(
+        const hardware::camera::common::V1_0::TorchModeStatus&);
+
+};
+
+} // namespace android
+
+#endif
diff --git a/services/camera/libcameraservice/common/FrameProcessorBase.cpp b/services/camera/libcameraservice/common/FrameProcessorBase.cpp
index 2ef3057..9e78f88 100644
--- a/services/camera/libcameraservice/common/FrameProcessorBase.cpp
+++ b/services/camera/libcameraservice/common/FrameProcessorBase.cpp
@@ -123,7 +123,7 @@
     ATRACE_CALL();
     CaptureResult result;
 
-    ALOGV("%s: Camera %d: Process new frames", __FUNCTION__, device->getId());
+    ALOGV("%s: Camera %s: Process new frames", __FUNCTION__, device->getId().string());
 
     while ( (res = device->getNextResult(&result)) == OK) {
 
@@ -133,8 +133,8 @@
 
         entry = result.mMetadata.find(ANDROID_REQUEST_FRAME_COUNT);
         if (entry.count == 0) {
-            ALOGE("%s: Camera %d: Error reading frame number",
-                    __FUNCTION__, device->getId());
+            ALOGE("%s: Camera %s: Error reading frame number",
+                    __FUNCTION__, device->getId().string());
             break;
         }
         ATRACE_INT("cam2_frame", entry.data.i32[0]);
@@ -149,8 +149,8 @@
         }
     }
     if (res != NOT_ENOUGH_DATA) {
-        ALOGE("%s: Camera %d: Error getting next frame: %s (%d)",
-                __FUNCTION__, device->getId(), strerror(-res), res);
+        ALOGE("%s: Camera %s: Error getting next frame: %s (%d)",
+                __FUNCTION__, device->getId().string(), strerror(-res), res);
         return;
     }
 
@@ -159,8 +159,8 @@
 
 bool FrameProcessorBase::processSingleFrame(CaptureResult &result,
                                             const sp<CameraDeviceBase> &device) {
-    ALOGV("%s: Camera %d: Process single frame (is empty? %d)",
-          __FUNCTION__, device->getId(), result.mMetadata.isEmpty());
+    ALOGV("%s: Camera %s: Process single frame (is empty? %d)",
+            __FUNCTION__, device->getId().string(), result.mMetadata.isEmpty());
     return processListeners(result, device) == OK;
 }
 
@@ -178,8 +178,8 @@
         entry = result.mMetadata.find(ANDROID_QUIRKS_PARTIAL_RESULT);
         if (entry.count != 0 &&
                 entry.data.u8[0] == ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL) {
-            ALOGV("%s: Camera %d: This is a partial result",
-                    __FUNCTION__, device->getId());
+            ALOGV("%s: Camera %s: This is a partial result",
+                    __FUNCTION__, device->getId().string());
             isPartialResult = true;
         }
     }
@@ -190,7 +190,7 @@
     // include CaptureResultExtras.
     entry = result.mMetadata.find(ANDROID_REQUEST_ID);
     if (entry.count == 0) {
-        ALOGE("%s: Camera %d: Error reading frame id", __FUNCTION__, device->getId());
+        ALOGE("%s: Camera %s: Error reading frame id", __FUNCTION__, device->getId().string());
         return BAD_VALUE;
     }
     int32_t requestId = entry.data.i32[0];
@@ -215,8 +215,8 @@
             item++;
         }
     }
-    ALOGV("%s: Camera %d: Got %zu range listeners out of %zu", __FUNCTION__,
-          device->getId(), listeners.size(), mRangeListeners.size());
+    ALOGV("%s: Camera %s: Got %zu range listeners out of %zu", __FUNCTION__,
+          device->getId().string(), listeners.size(), mRangeListeners.size());
 
     List<sp<FilteredListener> >::iterator item = listeners.begin();
     for (; item != listeners.end(); item++) {
diff --git a/services/camera/libcameraservice/device1/CameraHardwareInterface.h b/services/camera/libcameraservice/device1/CameraHardwareInterface.h
index 952bae1..c8210b7 100644
--- a/services/camera/libcameraservice/device1/CameraHardwareInterface.h
+++ b/services/camera/libcameraservice/device1/CameraHardwareInterface.h
@@ -27,6 +27,9 @@
 #include <system/window.h>
 #include <hardware/camera.h>
 
+#include <common/CameraModule.h>
+#include <common/CameraProviderManager.h>
+
 namespace android {
 
 typedef void (*notify_callback)(int32_t msgType,
@@ -124,6 +127,12 @@
         return rc;
     }
 
+    status_t initialize(sp<CameraProviderManager> manager) {
+        (void) manager;
+        ALOGE("%s: Not supported yet", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+
     /** Set the ANativeWindow to which preview frames are sent */
     status_t setPreviewWindow(const sp<ANativeWindow>& buf)
     {
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 3705e8f..6f64dc3 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -26,7 +26,7 @@
 #endif
 
 // Convenience macro for transient errors
-#define CLOGE(fmt, ...) ALOGE("Camera %d: %s: " fmt, mId, __FUNCTION__, \
+#define CLOGE(fmt, ...) ALOGE("Camera %s: %s: " fmt, mId.string(), __FUNCTION__, \
             ##__VA_ARGS__)
 
 // Convenience macros for transitioning to the error state
@@ -56,13 +56,14 @@
 #include "CameraService.h"
 
 using namespace android::camera3;
+using namespace android::hardware::camera;
+using namespace android::hardware::camera::device::V3_2;
 
 namespace android {
 
-Camera3Device::Camera3Device(int id):
+Camera3Device::Camera3Device(const String8 &id):
         mId(id),
         mIsConstrainedHighSpeedConfiguration(false),
-        mHal3Device(NULL),
         mStatus(STATUS_UNINITIALIZED),
         mStatusWaiters(0),
         mUsePartialResult(false),
@@ -77,17 +78,17 @@
     ATRACE_CALL();
     camera3_callback_ops::notify = &sNotify;
     camera3_callback_ops::process_capture_result = &sProcessCaptureResult;
-    ALOGV("%s: Created device for camera %d", __FUNCTION__, id);
+    ALOGV("%s: Created device for camera %s", __FUNCTION__, mId.string());
 }
 
 Camera3Device::~Camera3Device()
 {
     ATRACE_CALL();
-    ALOGV("%s: Tearing down for camera id %d", __FUNCTION__, mId);
+    ALOGV("%s: Tearing down for camera id %s", __FUNCTION__, mId.string());
     disconnect();
 }
 
-int Camera3Device::getId() const {
+const String8& Camera3Device::getId() const {
     return mId;
 }
 
@@ -101,7 +102,7 @@
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
 
-    ALOGV("%s: Initializing device for camera %d", __FUNCTION__, mId);
+    ALOGV("%s: Initializing device for camera %s", __FUNCTION__, mId.string());
     if (mStatus != STATUS_UNINITIALIZED) {
         CLOGE("Already initialized!");
         return INVALID_OPERATION;
@@ -110,12 +111,11 @@
     /** Open HAL device */
 
     status_t res;
-    String8 deviceName = String8::format("%d", mId);
 
     camera3_device_t *device;
 
-    ATRACE_BEGIN("camera3->open");
-    res = module->open(deviceName.string(),
+    ATRACE_BEGIN("CameraHal::open");
+    res = module->open(mId.string(),
             reinterpret_cast<hw_device_t**>(&device));
     ATRACE_END();
 
@@ -125,17 +125,17 @@
     }
 
     /** Cross-check device version */
-    if (device->common.version < CAMERA_DEVICE_API_VERSION_3_0) {
+    if (device->common.version < CAMERA_DEVICE_API_VERSION_3_2) {
         SET_ERR_L("Could not open camera: "
                 "Camera device should be at least %x, reports %x instead",
-                CAMERA_DEVICE_API_VERSION_3_0,
+                CAMERA_DEVICE_API_VERSION_3_2,
                 device->common.version);
         device->common.close(&device->common);
         return BAD_VALUE;
     }
 
     camera_info info;
-    res = module->getCameraInfo(mId, &info);
+    res = module->getCameraInfo(atoi(mId), &info);
     if (res != OK) return res;
 
     if (info.device_version != device->common.version) {
@@ -148,7 +148,7 @@
 
     /** Initialize device with callback functions */
 
-    ATRACE_BEGIN("camera3->initialize");
+    ATRACE_BEGIN("CameraHal::initialize");
     res = device->ops->initialize(device, this);
     ATRACE_END();
 
@@ -156,16 +156,64 @@
         SET_ERR_L("Unable to initialize HAL device: %s (%d)",
                 strerror(-res), res);
         device->common.close(&device->common);
-        return BAD_VALUE;
+        return res;
     }
 
+    /** Everything is good to go */
+
+    mDeviceVersion = device->common.version;
+    mDeviceInfo = info.static_camera_characteristics;
+    mInterface = std::make_unique<HalInterface>(device);
+
+    return initializeCommonLocked();
+}
+
+status_t Camera3Device::initialize(sp<CameraProviderManager> manager) {
+    ATRACE_CALL();
+    Mutex::Autolock il(mInterfaceLock);
+    Mutex::Autolock l(mLock);
+
+    ALOGV("%s: Initializing HIDL device for camera %s", __FUNCTION__, mId.string());
+    if (mStatus != STATUS_UNINITIALIZED) {
+        CLOGE("Already initialized!");
+        return INVALID_OPERATION;
+    }
+    if (manager == nullptr) return INVALID_OPERATION;
+
+    sp<ICameraDeviceSession> session;
+    ATRACE_BEGIN("CameraHal::openSession");
+    status_t res = manager->openSession(String8::std_string(mId), this,
+            /*out*/ &session);
+    ATRACE_END();
+    if (res != OK) {
+        SET_ERR_L("Could not open camera session: %s (%d)", strerror(-res), res);
+        return res;
+    }
+
+    res = manager->getCameraCharacteristics(String8::std_string(mId), &mDeviceInfo);
+    if (res != OK) {
+        SET_ERR_L("Could not retrive camera characteristics: %s (%d)", strerror(-res), res);
+        session->close();
+        return res;
+    }
+
+    // TODO: camera service will absorb 3_2/3_3/3_4 differences in the future
+    //       for now use 3_4 to keep legacy devices working
+    mDeviceVersion = CAMERA_DEVICE_API_VERSION_3_4;
+    mInterface = std::make_unique<HalInterface>(session);
+
+    return initializeCommonLocked();
+}
+
+status_t Camera3Device::initializeCommonLocked() {
+
     /** Start up status tracker thread */
     mStatusTracker = new StatusTracker(this);
-    res = mStatusTracker->run(String8::format("C3Dev-%d-Status", mId).string());
+    status_t res = mStatusTracker->run(String8::format("C3Dev-%s-Status", mId.string()).string());
     if (res != OK) {
         SET_ERR_L("Unable to start status tracking thread: %s (%d)",
                 strerror(-res), res);
-        device->common.close(&device->common);
+        mInterface->close();
         mStatusTracker.clear();
         return res;
     }
@@ -177,38 +225,31 @@
     mBufferManager = new Camera3BufferManager();
 
     bool aeLockAvailable = false;
-    camera_metadata_ro_entry aeLockAvailableEntry;
-    res = find_camera_metadata_ro_entry(info.static_camera_characteristics,
-            ANDROID_CONTROL_AE_LOCK_AVAILABLE, &aeLockAvailableEntry);
-    if (res == OK && aeLockAvailableEntry.count > 0) {
+    camera_metadata_entry aeLockAvailableEntry = mDeviceInfo.find(
+            ANDROID_CONTROL_AE_LOCK_AVAILABLE);
+    if (aeLockAvailableEntry.count > 0) {
         aeLockAvailable = (aeLockAvailableEntry.data.u8[0] ==
                 ANDROID_CONTROL_AE_LOCK_AVAILABLE_TRUE);
     }
 
     /** Start up request queue thread */
-    mRequestThread = new RequestThread(this, mStatusTracker, device, aeLockAvailable);
-    res = mRequestThread->run(String8::format("C3Dev-%d-ReqQueue", mId).string());
+    mRequestThread = new RequestThread(this, mStatusTracker, mInterface.get(), mDeviceVersion,
+            aeLockAvailable);
+    res = mRequestThread->run(String8::format("C3Dev-%s-ReqQueue", mId.string()).string());
     if (res != OK) {
         SET_ERR_L("Unable to start request queue thread: %s (%d)",
                 strerror(-res), res);
-        device->common.close(&device->common);
+        mInterface->close();
         mRequestThread.clear();
         return res;
     }
 
     mPreparerThread = new PreparerThread();
 
-    /** Everything is good to go */
-
-    mDeviceVersion = device->common.version;
-    mDeviceInfo = info.static_camera_characteristics;
-    mHal3Device = device;
-
     // Determine whether we need to derive sensitivity boost values for older devices.
     // If post-RAW sensitivity boost range is listed, so should post-raw sensitivity control
     // be listed (as the default value 100)
-    if (mDeviceVersion < CAMERA_DEVICE_API_VERSION_3_4 &&
-            mDeviceInfo.exists(ANDROID_CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE)) {
+    if (mDeviceInfo.exists(ANDROID_CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE)) {
         mDerivePostRawSensKey = true;
     }
 
@@ -312,7 +353,7 @@
         mStatusTracker->join();
     }
 
-    camera3_device_t *hal3Device;
+    HalInterface* interface;
     {
         Mutex::Autolock l(mLock);
 
@@ -320,20 +361,16 @@
         mStatusTracker.clear();
         mBufferManager.clear();
 
-        hal3Device = mHal3Device;
+        interface = mInterface.get();
     }
 
     // Call close without internal mutex held, as the HAL close may need to
     // wait on assorted callbacks,etc, to complete before it can return.
-    if (hal3Device != NULL) {
-        ATRACE_BEGIN("camera3->close");
-        hal3Device->common.close(&hal3Device->common);
-        ATRACE_END();
-    }
+    interface->close();
 
     {
         Mutex::Autolock l(mLock);
-        mHal3Device = NULL;
+        mInterface->clear();
         internalUpdateStatusLocked(STATUS_UNINITIALIZED);
     }
 
@@ -447,12 +484,80 @@
     }
 }
 
+hardware::graphics::common::V1_0::PixelFormat Camera3Device::mapToPixelFormat(
+        int frameworkFormat) {
+    return (hardware::graphics::common::V1_0::PixelFormat) frameworkFormat;
+}
+
+DataspaceFlags Camera3Device::mapToHidlDataspace(
+        android_dataspace dataSpace) {
+    return dataSpace;
+}
+
+ConsumerUsageFlags Camera3Device::mapToConsumerUsage(
+        uint32_t usage) {
+    return usage;
+}
+
+StreamRotation Camera3Device::mapToStreamRotation(camera3_stream_rotation_t rotation) {
+    switch (rotation) {
+        case CAMERA3_STREAM_ROTATION_0:
+            return StreamRotation::ROTATION_0;
+        case CAMERA3_STREAM_ROTATION_90:
+            return StreamRotation::ROTATION_90;
+        case CAMERA3_STREAM_ROTATION_180:
+            return StreamRotation::ROTATION_180;
+        case CAMERA3_STREAM_ROTATION_270:
+            return StreamRotation::ROTATION_270;
+    }
+    ALOGE("%s: Unknown stream rotation %d", __FUNCTION__, rotation);
+    return StreamRotation::ROTATION_0;
+}
+
+StreamConfigurationMode Camera3Device::mapToStreamConfigurationMode(
+        camera3_stream_configuration_mode_t operationMode) {
+    switch(operationMode) {
+        case CAMERA3_STREAM_CONFIGURATION_NORMAL_MODE:
+            return StreamConfigurationMode::NORMAL_MODE;
+        case CAMERA3_STREAM_CONFIGURATION_CONSTRAINED_HIGH_SPEED_MODE:
+            return StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE;
+        case CAMERA3_VENDOR_STREAM_CONFIGURATION_MODE_START:
+            // Needs to be mapped by vendor extensions
+            break;
+    }
+    ALOGE("%s: Unknown stream configuration mode %d", __FUNCTION__, operationMode);
+    return StreamConfigurationMode::NORMAL_MODE;
+}
+
+camera3_buffer_status_t Camera3Device::mapHidlBufferStatus(BufferStatus status) {
+    switch (status) {
+        case BufferStatus::OK: return CAMERA3_BUFFER_STATUS_OK;
+        case BufferStatus::ERROR: return CAMERA3_BUFFER_STATUS_ERROR;
+    }
+    return CAMERA3_BUFFER_STATUS_ERROR;
+}
+
+int Camera3Device::mapToFrameworkFormat(
+        hardware::graphics::common::V1_0::PixelFormat pixelFormat) {
+    return static_cast<uint32_t>(pixelFormat);
+}
+
+uint32_t Camera3Device::mapConsumerToFrameworkUsage(
+        ConsumerUsageFlags usage) {
+    return usage;
+}
+
+uint32_t Camera3Device::mapProducerToFrameworkUsage(
+        ProducerUsageFlags usage) {
+    return usage;
+}
+
 ssize_t Camera3Device::getJpegBufferSize(uint32_t width, uint32_t height) const {
     // Get max jpeg size (area-wise).
     Size maxJpegResolution = getMaxJpegResolution();
     if (maxJpegResolution.width == 0) {
-        ALOGE("%s: Camera %d: Can't find valid available jpeg sizes in static metadata!",
-                __FUNCTION__, mId);
+        ALOGE("%s: Camera %s: Can't find valid available jpeg sizes in static metadata!",
+                __FUNCTION__, mId.string());
         return BAD_VALUE;
     }
 
@@ -460,7 +565,8 @@
     ssize_t maxJpegBufferSize = 0;
     camera_metadata_ro_entry jpegBufMaxSize = mDeviceInfo.find(ANDROID_JPEG_MAX_SIZE);
     if (jpegBufMaxSize.count == 0) {
-        ALOGE("%s: Camera %d: Can't find maximum JPEG size in static metadata!", __FUNCTION__, mId);
+        ALOGE("%s: Camera %s: Can't find maximum JPEG size in static metadata!", __FUNCTION__,
+                mId.string());
         return BAD_VALUE;
     }
     maxJpegBufferSize = jpegBufMaxSize.data.i32[0];
@@ -482,8 +588,8 @@
     const int FLOATS_PER_POINT=4;
     camera_metadata_ro_entry maxPointCount = mDeviceInfo.find(ANDROID_DEPTH_MAX_DEPTH_SAMPLES);
     if (maxPointCount.count == 0) {
-        ALOGE("%s: Camera %d: Can't find maximum depth point cloud size in static metadata!",
-                __FUNCTION__, mId);
+        ALOGE("%s: Camera %s: Can't find maximum depth point cloud size in static metadata!",
+                __FUNCTION__, mId.string());
         return BAD_VALUE;
     }
     ssize_t maxBytesForPointCloud = sizeof(android_depth_points) +
@@ -500,8 +606,8 @@
         mDeviceInfo.find(ANDROID_SENSOR_OPAQUE_RAW_SIZE);
     size_t count = rawOpaqueSizes.count;
     if (count == 0 || (count % PER_CONFIGURATION_SIZE)) {
-        ALOGE("%s: Camera %d: bad opaque RAW size static metadata length(%zu)!",
-                __FUNCTION__, mId, count);
+        ALOGE("%s: Camera %s: bad opaque RAW size static metadata length(%zu)!",
+                __FUNCTION__, mId.string(), count);
         return BAD_VALUE;
     }
 
@@ -512,8 +618,8 @@
         }
     }
 
-    ALOGE("%s: Camera %d: cannot find size for %dx%d opaque RAW image!",
-            __FUNCTION__, mId, width, height);
+    ALOGE("%s: Camera %s: cannot find size for %dx%d opaque RAW image!",
+            __FUNCTION__, mId.string(), width, height);
     return BAD_VALUE;
 }
 
@@ -527,11 +633,11 @@
     bool gotLock = tryLockSpinRightRound(mLock);
 
     ALOGW_IF(!gotInterfaceLock,
-            "Camera %d: %s: Unable to lock interface lock, proceeding anyway",
-            mId, __FUNCTION__);
+            "Camera %s: %s: Unable to lock interface lock, proceeding anyway",
+            mId.string(), __FUNCTION__);
     ALOGW_IF(!gotLock,
-            "Camera %d: %s: Unable to lock main lock, proceeding anyway",
-            mId, __FUNCTION__);
+            "Camera %s: %s: Unable to lock main lock, proceeding anyway",
+            mId.string(), __FUNCTION__);
 
     bool dumpTemplates = false;
 
@@ -624,12 +730,11 @@
         };
 
         for (int i = 1; i < CAMERA3_TEMPLATE_COUNT; i++) {
-            const camera_metadata_t *templateRequest;
-            templateRequest =
-                mHal3Device->ops->construct_default_request_settings(
-                    mHal3Device, i);
+            camera_metadata_t *templateRequest = nullptr;
+            mInterface->constructDefaultRequestSettings(
+                    (camera3_request_template_t) i, &templateRequest);
             lines = String8::format("    HAL Request %s:\n", templateNames[i-1]);
-            if (templateRequest == NULL) {
+            if (templateRequest == nullptr) {
                 lines.append("       Not supported\n");
                 write(fd, lines.string(), lines.size());
             } else {
@@ -637,15 +742,16 @@
                 dump_indented_camera_metadata(templateRequest,
                         fd, /*verbosity*/2, /*indentation*/8);
             }
+            free_camera_metadata(templateRequest);
         }
     }
 
     mTagMonitor.dumpMonitoredMetadata(fd);
 
-    if (mHal3Device != NULL) {
+    if (mInterface->valid()) {
         lines = String8("    HAL device dump:\n");
         write(fd, lines.string(), lines.size());
-        mHal3Device->ops->dump(mHal3Device, fd);
+        mInterface->dump(fd);
     }
 
     if (gotLock) mLock.unlock();
@@ -779,7 +885,7 @@
             SET_ERR_L("Can't transition to active in %f seconds!",
                     kActiveTimeout/1e9);
         }
-        ALOGV("Camera %d: Capture request %" PRId32 " enqueued", mId,
+        ALOGV("Camera %s: Capture request %" PRId32 " enqueued", mId.string(),
               (*(requestList.begin()))->mResultExtras.requestId);
     } else {
         CLOGE("Cannot queue request. Impossible.");
@@ -789,6 +895,145 @@
     return res;
 }
 
+hardware::Return<void> Camera3Device::processCaptureResult(
+        const device::V3_2::CaptureResult& result) {
+    camera3_capture_result r;
+    status_t res;
+    r.frame_number = result.frameNumber;
+    if (result.result.size() != 0) {
+        r.result = reinterpret_cast<const camera_metadata_t*>(result.result.data());
+        size_t expected_metadata_size = result.result.size();
+        if ((res = validate_camera_metadata_structure(r.result, &expected_metadata_size)) != OK) {
+            ALOGE("%s: Frame %d: Invalid camera metadata received by camera service from HAL: %s (%d)",
+                    __FUNCTION__, result.frameNumber, strerror(-res), res);
+            return hardware::Void();
+        }
+    } else {
+        r.result = nullptr;
+    }
+
+    std::vector<camera3_stream_buffer_t> outputBuffers(result.outputBuffers.size());
+    std::vector<buffer_handle_t> outputBufferHandles(result.outputBuffers.size());
+    for (size_t i = 0; i < result.outputBuffers.size(); i++) {
+        auto& bDst = outputBuffers[i];
+        const StreamBuffer &bSrc = result.outputBuffers[i];
+
+        ssize_t idx = mOutputStreams.indexOfKey(bSrc.streamId);
+        if (idx == -1) {
+            ALOGE("%s: Frame %d: Buffer %zu: Invalid output stream id %d",
+                    __FUNCTION__, result.frameNumber, i, bSrc.streamId);
+            return hardware::Void();
+        }
+        bDst.stream = mOutputStreams.valueAt(idx)->asHalStream();
+
+        buffer_handle_t *buffer;
+        res = mInterface->popInflightBuffer(result.frameNumber, bSrc.streamId,
+                &buffer);
+        if (res != OK) {
+            ALOGE("%s: Frame %d: Buffer %zu: No in-flight buffer for stream %d",
+                    __FUNCTION__, result.frameNumber, i, bSrc.streamId);
+            return hardware::Void();
+        }
+        bDst.buffer = buffer;
+        bDst.status = mapHidlBufferStatus(bSrc.status);
+        bDst.acquire_fence = -1;
+        if (bSrc.releaseFence == nullptr) {
+            bDst.release_fence = -1;
+        } else if (bSrc.releaseFence->numFds == 1) {
+            bDst.release_fence = dup(bSrc.releaseFence->data[0]);
+        } else {
+            ALOGE("%s: Frame %d: Invalid release fence for buffer %zu, fd count is %d, not 1",
+                    __FUNCTION__, result.frameNumber, i, bSrc.releaseFence->numFds);
+            return hardware::Void();
+        }
+    }
+    r.num_output_buffers = outputBuffers.size();
+    r.output_buffers = outputBuffers.data();
+
+    camera3_stream_buffer_t inputBuffer;
+    if (result.inputBuffer.streamId == -1) {
+        r.input_buffer = nullptr;
+    } else {
+        if (mInputStream->getId() != result.inputBuffer.streamId) {
+            ALOGE("%s: Frame %d: Invalid input stream id %d", __FUNCTION__,
+                    result.frameNumber, result.inputBuffer.streamId);
+            return hardware::Void();
+        }
+        inputBuffer.stream = mInputStream->asHalStream();
+        buffer_handle_t *buffer;
+        res = mInterface->popInflightBuffer(result.frameNumber, result.inputBuffer.streamId,
+                &buffer);
+        if (res != OK) {
+            ALOGE("%s: Frame %d: Input buffer: No in-flight buffer for stream %d",
+                    __FUNCTION__, result.frameNumber, result.inputBuffer.streamId);
+            return hardware::Void();
+        }
+        inputBuffer.buffer = buffer;
+        inputBuffer.status = mapHidlBufferStatus(result.inputBuffer.status);
+        inputBuffer.acquire_fence = -1;
+        if (result.inputBuffer.releaseFence == nullptr) {
+            inputBuffer.release_fence = -1;
+        } else if (result.inputBuffer.releaseFence->numFds == 1) {
+            inputBuffer.release_fence = dup(result.inputBuffer.releaseFence->data[0]);
+        } else {
+            ALOGE("%s: Frame %d: Invalid release fence for input buffer, fd count is %d, not 1",
+                    __FUNCTION__, result.frameNumber, result.inputBuffer.releaseFence->numFds);
+            return hardware::Void();
+        }
+        r.input_buffer = &inputBuffer;
+    }
+
+    r.partial_result = result.partialResult;
+
+    processCaptureResult(&r);
+
+    return hardware::Void();
+}
+
+hardware::Return<void> Camera3Device::notify(
+        const NotifyMsg& msg) {
+    camera3_notify_msg m;
+    switch (msg.type) {
+        case MsgType::ERROR:
+            m.type = CAMERA3_MSG_ERROR;
+            m.message.error.frame_number = msg.msg.error.frameNumber;
+            if (msg.msg.error.errorStreamId >= 0) {
+                ssize_t idx = mOutputStreams.indexOfKey(msg.msg.error.errorStreamId);
+                if (idx == -1) {
+                    ALOGE("%s: Frame %d: Invalid error stream id %d",
+                            __FUNCTION__, m.message.error.frame_number, msg.msg.error.errorStreamId);
+                    return hardware::Void();
+                }
+                m.message.error.error_stream = mOutputStreams.valueAt(idx)->asHalStream();
+            } else {
+                m.message.error.error_stream = nullptr;
+            }
+            switch (msg.msg.error.errorCode) {
+                case ErrorCode::ERROR_DEVICE:
+                    m.message.error.error_code = CAMERA3_MSG_ERROR_DEVICE;
+                    break;
+                case ErrorCode::ERROR_REQUEST:
+                    m.message.error.error_code = CAMERA3_MSG_ERROR_REQUEST;
+                    break;
+                case ErrorCode::ERROR_RESULT:
+                    m.message.error.error_code = CAMERA3_MSG_ERROR_RESULT;
+                    break;
+                case ErrorCode::ERROR_BUFFER:
+                    m.message.error.error_code = CAMERA3_MSG_ERROR_BUFFER;
+                    break;
+            }
+            break;
+        case MsgType::SHUTTER:
+            m.type = CAMERA3_MSG_SHUTTER;
+            m.message.shutter.frame_number = msg.msg.shutter.frameNumber;
+            m.message.shutter.timestamp = msg.msg.shutter.timestamp;
+            break;
+    }
+    notify(&m);
+
+    return hardware::Void();
+}
+
 status_t Camera3Device::captureList(const List<const CameraMetadata> &requests,
                                     int64_t *lastFrameNumber) {
     ATRACE_CALL();
@@ -854,7 +1099,7 @@
             SET_ERR_L("Unexpected status: %d", mStatus);
             return INVALID_OPERATION;
     }
-    ALOGV("Camera %d: Clearing repeating request", mId);
+    ALOGV("Camera %s: Clearing repeating request", mId.string());
 
     return mRequestThread->clearRepeatingRequests(lastFrameNumber);
 }
@@ -871,8 +1116,8 @@
     ATRACE_CALL();
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
-    ALOGV("Camera %d: Creating new input stream %d: %d x %d, format %d",
-            mId, mNextStreamId, width, height, format);
+    ALOGV("Camera %s: Creating new input stream %d: %d x %d, format %d",
+            mId.string(), mNextStreamId, width, height, format);
 
     status_t res;
     bool wasActive = false;
@@ -928,7 +1173,7 @@
         internalResumeLocked();
     }
 
-    ALOGV("Camera %d: Created input stream", mId);
+    ALOGV("Camera %s: Created input stream", mId.string());
     return OK;
 }
 
@@ -942,8 +1187,8 @@
     ATRACE_CALL();
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
-    ALOGV("Camera %d: Creating ZSL stream %d: %d x %d, depth %d",
-            mId, mNextStreamId, width, height, depth);
+    ALOGV("Camera %s: Creating ZSL stream %d: %d x %d, depth %d",
+            mId.string(), mNextStreamId, width, height, depth);
 
     status_t res;
     bool wasActive = false;
@@ -1008,7 +1253,7 @@
         internalResumeLocked();
     }
 
-    ALOGV("Camera %d: Created ZSL stream", mId);
+    ALOGV("Camera %s: Created ZSL stream", mId.string());
     return OK;
 }
 
@@ -1018,8 +1263,8 @@
     ATRACE_CALL();
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
-    ALOGV("Camera %d: Creating new stream %d: %d x %d, format %d, dataspace %d rotation %d"
-            " consumer usage 0x%x", mId, mNextStreamId, width, height, format, dataSpace, rotation,
+    ALOGV("Camera %s: Creating new stream %d: %d x %d, format %d, dataspace %d rotation %d"
+            " consumer usage 0x%x", mId.string(), mNextStreamId, width, height, format, dataSpace, rotation,
             consumerUsage);
 
     status_t res;
@@ -1142,7 +1387,7 @@
         }
         internalResumeLocked();
     }
-    ALOGV("Camera %d: Created new stream", mId);
+    ALOGV("Camera %s: Created new stream", mId.string());
     return OK;
 }
 
@@ -1231,12 +1476,12 @@
     Mutex::Autolock l(mLock);
     status_t res;
 
-    ALOGV("%s: Camera %d: Deleting stream %d", __FUNCTION__, mId, id);
+    ALOGV("%s: Camera %s: Deleting stream %d", __FUNCTION__, mId.string(), id);
 
     // CameraDevice semantics require device to already be idle before
     // deleteStream is called, unlike for createStream.
     if (mStatus == STATUS_ACTIVE) {
-        ALOGV("%s: Camera %d: Device not idle", __FUNCTION__, mId);
+        ALOGV("%s: Camera %s: Device not idle", __FUNCTION__, mId.string());
         return -EBUSY;
     }
 
@@ -1343,18 +1588,20 @@
         return OK;
     }
 
-    const camera_metadata_t *rawRequest;
-    ATRACE_BEGIN("camera3->construct_default_request_settings");
-    rawRequest = mHal3Device->ops->construct_default_request_settings(
-        mHal3Device, templateId);
-    ATRACE_END();
-    if (rawRequest == NULL) {
+    camera_metadata_t *rawRequest;
+    status_t res = mInterface->constructDefaultRequestSettings(
+            (camera3_request_template_t) templateId, &rawRequest);
+    if (res == BAD_VALUE) {
         ALOGI("%s: template %d is not supported on this camera device",
               __FUNCTION__, templateId);
-        return BAD_VALUE;
+        return res;
+    } else if (res != OK) {
+        CLOGE("Unable to construct request template %d: %s (%d)",
+                templateId, strerror(-res), res);
+        return res;
     }
 
-    mRequestTemplateCache[templateId] = rawRequest;
+    mRequestTemplateCache[templateId].acquire(rawRequest);
 
     // Derive some new keys for backward compatibility
     if (mDerivePostRawSensKey && !mRequestTemplateCache[templateId].exists(
@@ -1394,7 +1641,7 @@
             return INVALID_OPERATION;
     }
 
-    ALOGV("%s: Camera %d: Waiting until idle", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Waiting until idle", __FUNCTION__, mId.string());
     status_t res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
     if (res != OK) {
         SET_ERR_L("Error waiting for HAL to drain: %s (%d)", strerror(-res),
@@ -1415,7 +1662,7 @@
     mRequestThread->setPaused(true);
     mPauseStateNotify = true;
 
-    ALOGV("%s: Camera %d: Internal wait until idle", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Internal wait until idle", __FUNCTION__, mId.string());
     status_t res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
     if (res != OK) {
         SET_ERR_L("Can't idle device in %f seconds!",
@@ -1514,8 +1761,8 @@
         if (res == TIMED_OUT) {
             return res;
         } else if (res != OK) {
-            ALOGW("%s: Camera %d: No frame in %" PRId64 " ns: %s (%d)",
-                    __FUNCTION__, mId, timeout, strerror(-res), res);
+            ALOGW("%s: Camera %s: No frame in %" PRId64 " ns: %s (%d)",
+                    __FUNCTION__, mId.string(), timeout, strerror(-res), res);
             return res;
         }
     }
@@ -1617,7 +1864,7 @@
 
 status_t Camera3Device::flush(int64_t *frameNumber) {
     ATRACE_CALL();
-    ALOGV("%s: Camera %d: Flushing all requests", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Flushing all requests", __FUNCTION__, mId.string());
     Mutex::Autolock il(mInterfaceLock);
 
     {
@@ -1626,7 +1873,7 @@
     }
 
     status_t res;
-    if (mHal3Device->common.version >= CAMERA_DEVICE_API_VERSION_3_1) {
+    if (mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_1) {
         res = mRequestThread->flush();
     } else {
         Mutex::Autolock l(mLock);
@@ -1642,7 +1889,7 @@
 
 status_t Camera3Device::prepare(int maxCount, int streamId) {
     ATRACE_CALL();
-    ALOGV("%s: Camera %d: Preparing stream %d", __FUNCTION__, mId, streamId);
+    ALOGV("%s: Camera %s: Preparing stream %d", __FUNCTION__, mId.string(), streamId);
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
 
@@ -1670,15 +1917,15 @@
 
 status_t Camera3Device::tearDown(int streamId) {
     ATRACE_CALL();
-    ALOGV("%s: Camera %d: Tearing down stream %d", __FUNCTION__, mId, streamId);
+    ALOGV("%s: Camera %s: Tearing down stream %d", __FUNCTION__, mId.string(), streamId);
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
 
     // Teardown can only be accomplished on devices that don't require register_stream_buffers,
     // since we cannot call register_stream_buffers except right after configure_streams.
-    if (mHal3Device->common.version < CAMERA_DEVICE_API_VERSION_3_2) {
+    if (mDeviceVersion < CAMERA_DEVICE_API_VERSION_3_2) {
         ALOGE("%s: Unable to tear down streams on device HAL v%x",
-                __FUNCTION__, mHal3Device->common.version);
+                __FUNCTION__, mDeviceVersion);
         return NO_INIT;
     }
 
@@ -1702,7 +1949,7 @@
 status_t Camera3Device::addBufferListenerForStream(int streamId,
         wp<Camera3StreamBufferListener> listener) {
     ATRACE_CALL();
-    ALOGV("%s: Camera %d: Adding buffer listener for stream %d", __FUNCTION__, mId, streamId);
+    ALOGV("%s: Camera %s: Adding buffer listener for stream %d", __FUNCTION__, mId.string(), streamId);
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
 
@@ -1740,7 +1987,7 @@
         if (mStatus != STATUS_ACTIVE && mStatus != STATUS_CONFIGURED) {
             return;
         }
-        ALOGV("%s: Camera %d: Now %s", __FUNCTION__, mId,
+        ALOGV("%s: Camera %s: Now %s", __FUNCTION__, mId.string(),
                 idle ? "idle" : "active");
         internalUpdateStatusLocked(idle ? STATUS_CONFIGURED : STATUS_ACTIVE);
 
@@ -1761,7 +2008,7 @@
 
 status_t Camera3Device::setConsumerSurface(int streamId, sp<Surface> consumer) {
     ATRACE_CALL();
-    ALOGV("%s: Camera %d: set consumer surface for stream %d", __FUNCTION__, mId, streamId);
+    ALOGV("%s: Camera %s: set consumer surface for stream %d", __FUNCTION__, mId.string(), streamId);
     Mutex::Autolock il(mInterfaceLock);
     Mutex::Autolock l(mLock);
 
@@ -1787,7 +2034,7 @@
         return INVALID_OPERATION;
     }
 
-    res = stream->finishConfiguration(mHal3Device);
+    res = stream->finishConfiguration();
     if (res != OK) {
         SET_ERR_L("Can't finish configuring output stream %d: %s (%d)",
                 stream->getId(), strerror(-res), res);
@@ -1821,7 +2068,7 @@
         // Lazy completion of stream configuration (allocation/registration)
         // on first use
         if (mInputStream->isConfiguring()) {
-            res = mInputStream->finishConfiguration(mHal3Device);
+            res = mInputStream->finishConfiguration();
             if (res != OK) {
                 SET_ERR_L("Unable to finish configuring input stream %d:"
                         " %s (%d)",
@@ -1866,7 +2113,7 @@
         // Lazy completion of stream configuration (allocation/registration)
         // on first use
         if (stream->isConfiguring()) {
-            res = stream->finishConfiguration(mHal3Device);
+            res = stream->finishConfiguration();
             if (res != OK) {
                 SET_ERR_L("Unable to finish configuring stream %d: %s (%d)",
                         stream->getId(), strerror(-res), res);
@@ -1949,7 +2196,7 @@
     }
 
     // Start configuring the streams
-    ALOGV("%s: Camera %d: Starting stream configuration", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Starting stream configuration", __FUNCTION__, mId.string());
 
     camera3_stream_configuration config;
     config.operation_mode = mIsConstrainedHighSpeedConfiguration ?
@@ -1995,9 +2242,8 @@
 
     // Do the HAL configuration; will potentially touch stream
     // max_buffers, usage, priv fields.
-    ATRACE_BEGIN("camera3->configure_streams");
-    res = mHal3Device->ops->configure_streams(mHal3Device, &config);
-    ATRACE_END();
+
+    res = mInterface->configureStreams(&config);
 
     if (res == BAD_VALUE) {
         // HAL rejected this set of streams as unsupported, clean up config
@@ -2018,7 +2264,7 @@
     // faster
 
     if (mInputStream != NULL && mInputStream->isConfiguring()) {
-        res = mInputStream->finishConfiguration(mHal3Device);
+        res = mInputStream->finishConfiguration();
         if (res != OK) {
             CLOGE("Can't finish configuring input stream %d: %s (%d)",
                     mInputStream->getId(), strerror(-res), res);
@@ -2031,7 +2277,7 @@
         sp<Camera3OutputStreamInterface> outputStream =
             mOutputStreams.editValueAt(i);
         if (outputStream->isConfiguring() && !outputStream->isConsumerConfigurationDeferred()) {
-            res = outputStream->finishConfiguration(mHal3Device);
+            res = outputStream->finishConfiguration();
             if (res != OK) {
                 CLOGE("Can't finish configuring output stream %d: %s (%d)",
                         outputStream->getId(), strerror(-res), res);
@@ -2068,7 +2314,7 @@
     internalUpdateStatusLocked((mDummyStreamId == NO_STREAM) ?
             STATUS_CONFIGURED : STATUS_UNCONFIGURED);
 
-    ALOGV("%s: Camera %d: Stream configuration complete", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Stream configuration complete", __FUNCTION__, mId.string());
 
     // tear down the deleted streams after configure streams.
     mDeletedStreams.clear();
@@ -2083,12 +2329,12 @@
     if (mDummyStreamId != NO_STREAM) {
         // Should never be adding a second dummy stream when one is already
         // active
-        SET_ERR_L("%s: Camera %d: A dummy stream already exists!",
-                __FUNCTION__, mId);
+        SET_ERR_L("%s: Camera %s: A dummy stream already exists!",
+                __FUNCTION__, mId.string());
         return INVALID_OPERATION;
     }
 
-    ALOGV("%s: Camera %d: Adding a dummy stream", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Adding a dummy stream", __FUNCTION__, mId.string());
 
     sp<Camera3OutputStreamInterface> dummyStream =
             new Camera3DummyStream(mNextStreamId);
@@ -2112,7 +2358,7 @@
     if (mDummyStreamId == NO_STREAM) return OK;
     if (mOutputStreams.size() == 1) return OK;
 
-    ALOGV("%s: Camera %d: Removing the dummy stream", __FUNCTION__, mId);
+    ALOGV("%s: Camera %s: Removing the dummy stream", __FUNCTION__, mId.string());
 
     // Ok, have a dummy stream and there's at least one other output stream,
     // so remove the dummy
@@ -2166,7 +2412,7 @@
 void Camera3Device::setErrorStateLockedV(const char *fmt, va_list args) {
     // Print out all error messages to log
     String8 errorCause = String8::formatV(fmt, args);
-    ALOGE("Camera %d: %s", mId, errorCause.string());
+    ALOGE("Camera %s: %s", mId.string(), errorCause.string());
 
     // But only do error state transition steps for the first error
     if (mStatus == STATUS_ERROR || mStatus == STATUS_UNINITIALIZED) return;
@@ -2639,8 +2885,8 @@
                 Camera3Stream::cast(msg.error_stream);
         streamId = stream->getId();
     }
-    ALOGV("Camera %d: %s: HAL error, frame %d, stream %d: %d",
-            mId, __FUNCTION__, msg.frame_number,
+    ALOGV("Camera %s: %s: HAL error, frame %d, stream %d: %d",
+            mId.string(), __FUNCTION__, msg.frame_number,
             streamId, msg.error_code);
 
     CaptureResultExtras resultExtras;
@@ -2661,8 +2907,8 @@
                     resultExtras = r.resultExtras;
                 } else {
                     resultExtras.frameNumber = msg.frame_number;
-                    ALOGE("Camera %d: %s: cannot find in-flight request on "
-                            "frame %" PRId64 " error", mId, __FUNCTION__,
+                    ALOGE("Camera %s: %s: cannot find in-flight request on "
+                            "frame %" PRId64 " error", mId.string(), __FUNCTION__,
                             resultExtras.frameNumber);
                 }
             }
@@ -2670,7 +2916,7 @@
             if (listener != NULL) {
                 listener->notifyError(errorCode, resultExtras);
             } else {
-                ALOGE("Camera %d: %s: no listener available", mId, __FUNCTION__);
+                ALOGE("Camera %s: %s: no listener available", mId.string(), __FUNCTION__);
             }
             break;
         default:
@@ -2715,8 +2961,8 @@
                 }
             }
 
-            ALOGVV("Camera %d: %s: Shutter fired for frame %d (id %d) at %" PRId64,
-                    mId, __FUNCTION__,
+            ALOGVV("Camera %s: %s: Shutter fired for frame %d (id %d) at %" PRId64,
+                    mId.string(), __FUNCTION__,
                     msg.frame_number, r.resultExtras.requestId, msg.timestamp);
             // Call listener, if any
             if (listener != NULL) {
@@ -2762,17 +3008,356 @@
 }
 
 /**
+ * HalInterface inner class methods
+ */
+
+Camera3Device::HalInterface::HalInterface(camera3_device_t *device) :
+        mHal3Device(device) {}
+
+Camera3Device::HalInterface::HalInterface(sp<ICameraDeviceSession> &session) :
+        mHal3Device(nullptr),
+        mHidlSession(session) {}
+
+Camera3Device::HalInterface::HalInterface() :
+        mHal3Device(nullptr) {}
+
+Camera3Device::HalInterface::HalInterface(const HalInterface& other) :
+        mHal3Device(other.mHal3Device), mHidlSession(other.mHidlSession) {}
+
+bool Camera3Device::HalInterface::valid() {
+    return (mHal3Device != nullptr) || (mHidlSession != nullptr);
+}
+
+void Camera3Device::HalInterface::clear() {
+    mHal3Device = nullptr;
+    mHidlSession.clear();
+}
+
+status_t Camera3Device::HalInterface::constructDefaultRequestSettings(
+        camera3_request_template_t templateId,
+        /*out*/ camera_metadata_t **requestTemplate) {
+    ATRACE_NAME("CameraHal::constructDefaultRequestSettings");
+    if (!valid()) return INVALID_OPERATION;
+    status_t res = OK;
+
+    if (mHal3Device != nullptr) {
+        const camera_metadata *r;
+        r = mHal3Device->ops->construct_default_request_settings(
+                mHal3Device, templateId);
+        if (r == nullptr) return BAD_VALUE;
+        *requestTemplate = clone_camera_metadata(r);
+        if (requestTemplate == nullptr) {
+            ALOGE("%s: Unable to clone camera metadata received from HAL",
+                    __FUNCTION__);
+            return INVALID_OPERATION;
+        }
+    } else {
+        common::V1_0::Status status;
+        RequestTemplate id;
+        switch (templateId) {
+            case CAMERA3_TEMPLATE_PREVIEW:
+                id = RequestTemplate::PREVIEW;
+                break;
+            case CAMERA3_TEMPLATE_STILL_CAPTURE:
+                id = RequestTemplate::STILL_CAPTURE;
+                break;
+            case CAMERA3_TEMPLATE_VIDEO_RECORD:
+                id = RequestTemplate::VIDEO_RECORD;
+                break;
+            case CAMERA3_TEMPLATE_VIDEO_SNAPSHOT:
+                id = RequestTemplate::VIDEO_SNAPSHOT;
+                break;
+            case CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG:
+                id = RequestTemplate::ZERO_SHUTTER_LAG;
+                break;
+            case CAMERA3_TEMPLATE_MANUAL:
+                id = RequestTemplate::MANUAL;
+                break;
+            default:
+                // Unknown template ID
+                return BAD_VALUE;
+        }
+        mHidlSession->constructDefaultRequestSettings(id,
+                [&status, &requestTemplate]
+                (common::V1_0::Status s, const device::V3_2::CameraMetadata& request) {
+                    status = s;
+                    if (status == common::V1_0::Status::OK) {
+                        const camera_metadata *r =
+                                reinterpret_cast<const camera_metadata_t*>(request.data());
+                        size_t expectedSize = request.size();
+                        int ret = validate_camera_metadata_structure(r, &expectedSize);
+                        if (ret == OK) {
+                            *requestTemplate = clone_camera_metadata(r);
+                            if (*requestTemplate == nullptr) {
+                                ALOGE("%s: Unable to clone camera metadata received from HAL",
+                                        __FUNCTION__);
+                                status = common::V1_0::Status::INTERNAL_ERROR;
+                            }
+                        } else {
+                            ALOGE("%s: Malformed camera metadata received from HAL", __FUNCTION__);
+                            status = common::V1_0::Status::INTERNAL_ERROR;
+                        }
+                    }
+                });
+        res = CameraProviderManager::mapToStatusT(status);
+    }
+    return res;
+}
+
+status_t Camera3Device::HalInterface::configureStreams(camera3_stream_configuration *config) {
+    ATRACE_NAME("CameraHal::configureStreams");
+    if (!valid()) return INVALID_OPERATION;
+    status_t res = OK;
+
+    if (mHal3Device != nullptr) {
+        res = mHal3Device->ops->configure_streams(mHal3Device, config);
+    } else {
+        // Convert stream config to HIDL
+
+        StreamConfiguration requestedConfiguration;
+        requestedConfiguration.streams.resize(config->num_streams);
+        for (size_t i = 0; i < config->num_streams; i++) {
+            Stream &dst = requestedConfiguration.streams[i];
+            camera3_stream_t *src = config->streams[i];
+
+            int streamId = Camera3Stream::cast(src)->getId();
+            StreamType streamType;
+            switch (src->stream_type) {
+                case CAMERA3_STREAM_OUTPUT:
+                    streamType = StreamType::OUTPUT;
+                    break;
+                case CAMERA3_STREAM_INPUT:
+                    streamType = StreamType::INPUT;
+                    break;
+                default:
+                    ALOGE("%s: Stream %d: Unsupported stream type %d",
+                            __FUNCTION__, streamId, config->streams[i]->stream_type);
+                    return BAD_VALUE;
+            }
+            dst.id = streamId;
+            dst.streamType = streamType;
+            dst.width = src->width;
+            dst.height = src->height;
+            dst.format = mapToPixelFormat(src->format);
+            dst.usage = mapToConsumerUsage(src->usage);
+            dst.dataSpace = mapToHidlDataspace(src->data_space);
+            dst.rotation = mapToStreamRotation((camera3_stream_rotation_t) src->rotation);
+        }
+        requestedConfiguration.operationMode = mapToStreamConfigurationMode(
+                (camera3_stream_configuration_mode_t) config->operation_mode);
+
+        // Invoke configureStreams
+
+        HalStreamConfiguration finalConfiguration;
+        common::V1_0::Status status;
+        mHidlSession->configureStreams(requestedConfiguration,
+                [&status, &finalConfiguration]
+                (common::V1_0::Status s, const HalStreamConfiguration& halConfiguration) {
+                    finalConfiguration = halConfiguration;
+                    status = s;
+                });
+        if (status != common::V1_0::Status::OK ) {
+            return CameraProviderManager::mapToStatusT(status);
+        }
+
+        // And convert output stream configuration from HIDL
+
+        for (size_t i = 0; i < config->num_streams; i++) {
+            camera3_stream_t *dst = config->streams[i];
+            int streamId = Camera3Stream::cast(dst)->getId();
+
+            // Start scan at i, with the assumption that the stream order matches
+            size_t realIdx = i;
+            bool found = false;
+            for (size_t idx = 0; idx < finalConfiguration.streams.size(); idx++) {
+                if (finalConfiguration.streams[realIdx].id == streamId) {
+                    found = true;
+                    break;
+                }
+                realIdx = (realIdx >= finalConfiguration.streams.size()) ? 0 : realIdx + 1;
+            }
+            if (!found) {
+                ALOGE("%s: Stream %d not found in stream configuration response from HAL",
+                        __FUNCTION__, streamId);
+                return INVALID_OPERATION;
+            }
+            HalStream &src = finalConfiguration.streams[realIdx];
+
+            int overrideFormat = mapToFrameworkFormat(src.overrideFormat);
+            if (dst->format != HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
+                if (dst->format != overrideFormat) {
+                    ALOGE("%s: Stream %d: Format override not allowed for format 0x%x", __FUNCTION__,
+                            streamId, dst->format);
+                }
+            } else {
+                // Override allowed with IMPLEMENTATION_DEFINED
+                dst->format = overrideFormat;
+            }
+
+            if (dst->stream_type == CAMERA3_STREAM_INPUT) {
+                if (src.producerUsage != 0) {
+                    ALOGE("%s: Stream %d: INPUT streams must have 0 for producer usage",
+                            __FUNCTION__, streamId);
+                    return INVALID_OPERATION;
+                }
+                dst->usage = mapConsumerToFrameworkUsage(src.consumerUsage);
+            } else {
+                // OUTPUT
+                if (src.consumerUsage != 0) {
+                    ALOGE("%s: Stream %d: OUTPUT streams must have 0 for consumer usage",
+                            __FUNCTION__, streamId);
+                    return INVALID_OPERATION;
+                }
+                dst->usage = mapProducerToFrameworkUsage(src.producerUsage);
+            }
+            dst->max_buffers = src.maxBuffers;
+        }
+    }
+    return res;
+}
+
+status_t Camera3Device::HalInterface::processCaptureRequest(
+        camera3_capture_request_t *request) {
+    ATRACE_NAME("CameraHal::processCaptureRequest");
+    if (!valid()) return INVALID_OPERATION;
+    status_t res = OK;
+
+    if (mHal3Device != nullptr) {
+        res = mHal3Device->ops->process_capture_request(mHal3Device, request);
+    } else {
+        device::V3_2::CaptureRequest captureRequest;
+        captureRequest.frameNumber = request->frame_number;
+        std::vector<native_handle_t*> handlesCreated;
+        // A null request settings maps to a size-0 CameraMetadata
+        if (request->settings != nullptr) {
+            captureRequest.settings.setToExternal(
+                    reinterpret_cast<uint8_t*>(const_cast<camera_metadata_t*>(request->settings)),
+                    get_camera_metadata_size(request->settings));
+        }
+
+        {
+            std::lock_guard<std::mutex> lock(mInflightLock);
+            if (request->input_buffer != nullptr) {
+                int32_t streamId = Camera3Stream::cast(request->input_buffer->stream)->getId();
+                captureRequest.inputBuffer.streamId = streamId;
+                captureRequest.inputBuffer.buffer = *(request->input_buffer->buffer);
+                captureRequest.inputBuffer.status = BufferStatus::OK;
+                native_handle_t *acquireFence = nullptr;
+                if (request->input_buffer->acquire_fence != -1) {
+                    acquireFence = native_handle_create(1,0);
+                    acquireFence->data[0] = request->input_buffer->acquire_fence;
+                    handlesCreated.push_back(acquireFence);
+                }
+                captureRequest.inputBuffer.acquireFence = acquireFence;
+                captureRequest.inputBuffer.releaseFence = nullptr;
+
+                pushInflightBufferLocked(captureRequest.frameNumber, streamId,
+                        request->input_buffer->buffer);
+            }
+
+            captureRequest.outputBuffers.resize(request->num_output_buffers);
+            for (size_t i = 0; i < request->num_output_buffers; i++) {
+                const camera3_stream_buffer_t *src = request->output_buffers + i;
+                StreamBuffer &dst = captureRequest.outputBuffers[i];
+                int32_t streamId = Camera3Stream::cast(src->stream)->getId();
+                dst.streamId = streamId;
+                dst.buffer = *(src->buffer);
+                dst.status = BufferStatus::OK;
+                native_handle_t *acquireFence = nullptr;
+                if (src->acquire_fence != -1) {
+                    acquireFence = native_handle_create(1,0);
+                    acquireFence->data[0] = src->acquire_fence;
+                    handlesCreated.push_back(acquireFence);
+                }
+                dst.acquireFence = acquireFence;
+                dst.releaseFence = nullptr;
+
+                pushInflightBufferLocked(captureRequest.frameNumber, streamId,
+                        src->buffer);
+            }
+        }
+        common::V1_0::Status status = mHidlSession->processCaptureRequest(captureRequest);
+
+        for (auto& handle : handlesCreated) {
+            native_handle_delete(handle);
+        }
+        res = CameraProviderManager::mapToStatusT(status);
+    }
+    return res;
+}
+
+status_t Camera3Device::HalInterface::flush() {
+    ATRACE_NAME("CameraHal::flush");
+    if (!valid()) return INVALID_OPERATION;
+    status_t res = OK;
+
+    if (mHal3Device != nullptr) {
+        res = mHal3Device->ops->flush(mHal3Device);
+    } else {
+        res = CameraProviderManager::mapToStatusT(mHidlSession->flush());
+    }
+    return res;
+}
+
+status_t Camera3Device::HalInterface::dump(int fd) {
+    ATRACE_NAME("CameraHal::dump");
+    if (!valid()) return INVALID_OPERATION;
+    status_t res = OK;
+
+    if (mHal3Device != nullptr) {
+        mHal3Device->ops->dump(mHal3Device, fd);
+    } else {
+        // Handled by CameraProviderManager::dump
+    }
+    return res;
+}
+
+status_t Camera3Device::HalInterface::close() {
+    ATRACE_NAME("CameraHal::close()");
+    if (!valid()) return INVALID_OPERATION;
+    status_t res = OK;
+
+    if (mHal3Device != nullptr) {
+        mHal3Device->common.close(&mHal3Device->common);
+    } else {
+        mHidlSession->close();
+    }
+    return res;
+}
+
+status_t Camera3Device::HalInterface::pushInflightBufferLocked(
+        int32_t frameNumber, int32_t streamId, buffer_handle_t *buffer) {
+    uint64_t key = static_cast<uint64_t>(frameNumber) << 32 | static_cast<uint64_t>(streamId);
+    mInflightBufferMap[key] = buffer;
+    return OK;
+}
+
+status_t Camera3Device::HalInterface::popInflightBuffer(
+        int32_t frameNumber, int32_t streamId, /*out*/ buffer_handle_t **buffer) {
+    std::lock_guard<std::mutex> lock(mInflightLock);
+
+    uint64_t key = static_cast<uint64_t>(frameNumber) << 32 | static_cast<uint64_t>(streamId);
+    auto it = mInflightBufferMap.find(key);
+    if (it == mInflightBufferMap.end()) return NAME_NOT_FOUND;
+    *buffer = it->second;
+    mInflightBufferMap.erase(it);
+    return OK;
+}
+
+/**
  * RequestThread inner class methods
  */
 
 Camera3Device::RequestThread::RequestThread(wp<Camera3Device> parent,
         sp<StatusTracker> statusTracker,
-        camera3_device_t *hal3Device,
+        HalInterface* interface,
+        uint32_t deviceVersion,
         bool aeLockAvailable) :
         Thread(/*canCallJava*/false),
         mParent(parent),
         mStatusTracker(statusTracker),
-        mHal3Device(hal3Device),
+        mInterface(interface),
+        mDeviceVersion(deviceVersion),
         mListener(nullptr),
         mId(getId(parent)),
         mReconfigured(false),
@@ -2789,6 +3374,8 @@
     mStatusId = statusTracker->addComponent();
 }
 
+Camera3Device::RequestThread::~RequestThread() {}
+
 void Camera3Device::RequestThread::setNotificationListener(
         wp<NotificationListener> listener) {
     Mutex::Autolock l(mRequestLock);
@@ -2843,10 +3430,11 @@
     return OK;
 }
 
-int Camera3Device::RequestThread::getId(const wp<Camera3Device> &device) {
+const String8& Camera3Device::RequestThread::getId(const wp<Camera3Device> &device) {
+    static String8 deadId("<DeadDevice>");
     sp<Camera3Device> d = device.promote();
-    if (d != NULL) return d->mId;
-    return 0;
+    if (d != nullptr) return d->mId;
+    return deadId;
 }
 
 status_t Camera3Device::RequestThread::queueTriggerLocked(
@@ -2976,8 +3564,8 @@
     ATRACE_CALL();
     Mutex::Autolock l(mFlushLock);
 
-    if (mHal3Device->common.version >= CAMERA_DEVICE_API_VERSION_3_1) {
-        return mHal3Device->ops->flush(mHal3Device);
+    if (mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_1) {
+        return mInterface->flush();
     }
 
     return -ENOTSUP;
@@ -3025,7 +3613,7 @@
     request->mAeTriggerCancelOverride.applyAeLock = false;
     request->mAeTriggerCancelOverride.applyAePrecaptureTrigger = false;
 
-    if (mHal3Device->common.version > CAMERA_DEVICE_API_VERSION_3_2) {
+    if (mDeviceVersion > CAMERA_DEVICE_API_VERSION_3_2) {
         return;
     }
 
@@ -3165,9 +3753,7 @@
     for (auto& nextRequest : mNextRequests) {
         // Submit request and block until ready for next one
         ATRACE_ASYNC_BEGIN("frame capture", nextRequest.halRequest.frame_number);
-        ATRACE_BEGIN("camera3->process_capture_request");
-        res = mHal3Device->ops->process_capture_request(mHal3Device, &nextRequest.halRequest);
-        ATRACE_END();
+        res = mInterface->processCaptureRequest(&nextRequest.halRequest);
 
         if (res != OK) {
             // Should only get a failure here for malformed requests or device-level
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index ac9dfc2..217c8b7 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -17,6 +17,9 @@
 #ifndef ANDROID_SERVERS_CAMERA3DEVICE_H
 #define ANDROID_SERVERS_CAMERA3DEVICE_H
 
+#include <utility>
+#include <unordered_map>
+
 #include <utils/Condition.h>
 #include <utils/Errors.h>
 #include <utils/List.h>
@@ -24,7 +27,12 @@
 #include <utils/Thread.h>
 #include <utils/KeyedVector.h>
 #include <utils/Timers.h>
+
+#include <android/hardware/camera/device/3.2/ICameraDevice.h>
+#include <android/hardware/camera/device/3.2/ICameraDeviceSession.h>
+#include <android/hardware/camera/device/3.2/ICameraDeviceCallback.h>
 #include <hardware/camera3.h>
+
 #include <camera/CaptureResult.h>
 
 #include "common/CameraDeviceBase.h"
@@ -55,17 +63,18 @@
 class Camera3OutputStreamInterface;
 class Camera3StreamInterface;
 
-}
+} // namespace camera3
 
 /**
  * CameraDevice for HAL devices with version CAMERA_DEVICE_API_VERSION_3_0 or higher.
  */
 class Camera3Device :
             public CameraDeviceBase,
+            virtual public hardware::camera::device::V3_2::ICameraDeviceCallback,
             private camera3_callback_ops {
   public:
 
-    explicit Camera3Device(int id);
+    explicit Camera3Device(const String8& id);
 
     virtual ~Camera3Device();
 
@@ -73,91 +82,92 @@
      * CameraDeviceBase interface
      */
 
-    virtual int      getId() const;
+    const String8& getId() const override;
 
     // Transitions to idle state on success.
-    virtual status_t initialize(CameraModule *module);
-    virtual status_t disconnect();
-    virtual status_t dump(int fd, const Vector<String16> &args);
-    virtual const CameraMetadata& info() const;
+    status_t initialize(CameraModule *module) override;
+    status_t initialize(sp<CameraProviderManager> manager) override;
+    status_t disconnect() override;
+    status_t dump(int fd, const Vector<String16> &args) override;
+    const CameraMetadata& info() const override;
 
     // Capture and setStreamingRequest will configure streams if currently in
     // idle state
-    virtual status_t capture(CameraMetadata &request, int64_t *lastFrameNumber = NULL);
-    virtual status_t captureList(const List<const CameraMetadata> &requests,
-                                 int64_t *lastFrameNumber = NULL);
-    virtual status_t setStreamingRequest(const CameraMetadata &request,
-                                         int64_t *lastFrameNumber = NULL);
-    virtual status_t setStreamingRequestList(const List<const CameraMetadata> &requests,
-                                             int64_t *lastFrameNumber = NULL);
-    virtual status_t clearStreamingRequest(int64_t *lastFrameNumber = NULL);
+    status_t capture(CameraMetadata &request, int64_t *lastFrameNumber = NULL) override;
+    status_t captureList(const List<const CameraMetadata> &requests,
+            int64_t *lastFrameNumber = NULL) override;
+    status_t setStreamingRequest(const CameraMetadata &request,
+            int64_t *lastFrameNumber = NULL) override;
+    status_t setStreamingRequestList(const List<const CameraMetadata> &requests,
+            int64_t *lastFrameNumber = NULL) override;
+    status_t clearStreamingRequest(int64_t *lastFrameNumber = NULL) override;
 
-    virtual status_t waitUntilRequestReceived(int32_t requestId, nsecs_t timeout);
+    status_t waitUntilRequestReceived(int32_t requestId, nsecs_t timeout) override;
 
     // Actual stream creation/deletion is delayed until first request is submitted
     // If adding streams while actively capturing, will pause device before adding
     // stream, reconfiguring device, and unpausing. If the client create a stream
     // with nullptr consumer surface, the client must then call setConsumer()
     // and finish the stream configuration before starting output streaming.
-    virtual status_t createStream(sp<Surface> consumer,
+    status_t createStream(sp<Surface> consumer,
             uint32_t width, uint32_t height, int format,
             android_dataspace dataSpace, camera3_stream_rotation_t rotation, int *id,
             int streamSetId = camera3::CAMERA3_STREAM_SET_ID_INVALID,
-            uint32_t consumerUsage = 0);
-    virtual status_t createInputStream(
+            uint32_t consumerUsage = 0) override;
+    status_t createInputStream(
             uint32_t width, uint32_t height, int format,
-            int *id);
-    virtual status_t createZslStream(
+            int *id) override;
+    status_t createZslStream(
             uint32_t width, uint32_t height,
             int depth,
             /*out*/
             int *id,
             sp<camera3::Camera3ZslStream>* zslStream);
-    virtual status_t createReprocessStreamFromStream(int outputId, int *id);
+    status_t createReprocessStreamFromStream(int outputId, int *id) override;
 
-    virtual status_t getStreamInfo(int id,
+    status_t getStreamInfo(int id,
             uint32_t *width, uint32_t *height,
-            uint32_t *format, android_dataspace *dataSpace);
-    virtual status_t setStreamTransform(int id, int transform);
+            uint32_t *format, android_dataspace *dataSpace) override;
+    status_t setStreamTransform(int id, int transform) override;
 
-    virtual status_t deleteStream(int id);
-    virtual status_t deleteReprocessStream(int id);
+    status_t deleteStream(int id) override;
+    status_t deleteReprocessStream(int id) override;
 
-    virtual status_t configureStreams(bool isConstraiedHighSpeed = false);
-    virtual status_t getInputBufferProducer(
-            sp<IGraphicBufferProducer> *producer);
+    status_t configureStreams(bool isConstraiedHighSpeed = false) override;
+    status_t getInputBufferProducer(
+            sp<IGraphicBufferProducer> *producer) override;
 
-    virtual status_t createDefaultRequest(int templateId, CameraMetadata *request);
+    status_t createDefaultRequest(int templateId, CameraMetadata *request) override;
 
     // Transitions to the idle state on success
-    virtual status_t waitUntilDrained();
+    status_t waitUntilDrained() override;
 
-    virtual status_t setNotifyCallback(wp<NotificationListener> listener);
-    virtual bool     willNotify3A();
-    virtual status_t waitForNextFrame(nsecs_t timeout);
-    virtual status_t getNextResult(CaptureResult *frame);
+    status_t setNotifyCallback(wp<NotificationListener> listener) override;
+    bool     willNotify3A() override;
+    status_t waitForNextFrame(nsecs_t timeout) override;
+    status_t getNextResult(CaptureResult *frame) override;
 
-    virtual status_t triggerAutofocus(uint32_t id);
-    virtual status_t triggerCancelAutofocus(uint32_t id);
-    virtual status_t triggerPrecaptureMetering(uint32_t id);
+    status_t triggerAutofocus(uint32_t id) override;
+    status_t triggerCancelAutofocus(uint32_t id) override;
+    status_t triggerPrecaptureMetering(uint32_t id) override;
 
-    virtual status_t pushReprocessBuffer(int reprocessStreamId,
-            buffer_handle_t *buffer, wp<BufferReleasedListener> listener);
+    status_t pushReprocessBuffer(int reprocessStreamId,
+            buffer_handle_t *buffer, wp<BufferReleasedListener> listener) override;
 
-    virtual status_t flush(int64_t *lastFrameNumber = NULL);
+    status_t flush(int64_t *lastFrameNumber = NULL) override;
 
-    virtual status_t prepare(int streamId);
+    status_t prepare(int streamId) override;
 
-    virtual status_t tearDown(int streamId);
+    status_t tearDown(int streamId) override;
 
-    virtual status_t addBufferListenerForStream(int streamId,
-            wp<camera3::Camera3StreamBufferListener> listener);
+    status_t addBufferListenerForStream(int streamId,
+            wp<camera3::Camera3StreamBufferListener> listener) override;
 
-    virtual status_t prepare(int maxCount, int streamId);
+    status_t prepare(int maxCount, int streamId) override;
 
-    virtual uint32_t getDeviceVersion();
+    uint32_t getDeviceVersion() override;
 
-    virtual ssize_t getJpegBufferSize(uint32_t width, uint32_t height) const;
+    ssize_t getJpegBufferSize(uint32_t width, uint32_t height) const override;
     ssize_t getPointCloudBufferSize() const;
     ssize_t getRawOpaqueBufferSize(int32_t width, int32_t height) const;
 
@@ -168,7 +178,7 @@
      * Set the deferred consumer surface to the output stream and finish the deferred
      * consumer configuration.
      */
-    virtual status_t setConsumerSurface(int streamId, sp<Surface> consumer);
+    status_t setConsumerSurface(int streamId, sp<Surface> consumer) override;
 
   private:
     static const size_t        kDumpLockAttempts  = 10;
@@ -198,14 +208,58 @@
     Mutex                      mLock;
 
     // Camera device ID
-    const int                  mId;
+    const String8              mId;
 
     // Flag indicating is the current active stream configuration is constrained high speed.
     bool                       mIsConstrainedHighSpeedConfiguration;
 
     /**** Scope for mLock ****/
 
-    camera3_device_t          *mHal3Device;
+    /**
+     * Adapter for legacy HAL / HIDL HAL interface calls; calls either into legacy HALv3 or the
+     * HIDL HALv3 interfaces.
+     */
+    class HalInterface {
+      public:
+        HalInterface(camera3_device_t *device);
+        HalInterface(sp<hardware::camera::device::V3_2::ICameraDeviceSession> &session);
+        HalInterface(const HalInterface &other);
+        HalInterface();
+
+        // Returns true if constructed with a valid device or session, and not yet cleared
+        bool valid();
+
+        // Reset this HalInterface object (does not call close())
+        void clear();
+
+        // Calls into the HAL interface
+
+        // Caller takes ownership of requestTemplate
+        status_t constructDefaultRequestSettings(camera3_request_template_t templateId,
+                /*out*/ camera_metadata_t **requestTemplate);
+        status_t configureStreams(/*inout*/ camera3_stream_configuration *config);
+        status_t processCaptureRequest(camera3_capture_request_t *request);
+        status_t flush();
+        status_t dump(int fd);
+        status_t close();
+
+        // Find a buffer_handle_t based on frame number and stream ID
+        status_t popInflightBuffer(int32_t frameNumber, int32_t streamId,
+                /*out*/ buffer_handle_t **buffer);
+
+      private:
+        camera3_device_t *mHal3Device;
+        sp<hardware::camera::device::V3_2::ICameraDeviceSession> mHidlSession;
+
+        std::mutex mInflightLock;
+
+        status_t pushInflightBufferLocked(int32_t frameNumber, int32_t streamId,
+                buffer_handle_t *buffer);
+        // Cache of buffer handles keyed off (frameNumber << 32 | streamId)
+        std::unordered_map<uint64_t, buffer_handle_t*> mInflightBufferMap;
+    };
+
+    std::unique_ptr<HalInterface> mInterface;
 
     CameraMetadata             mDeviceInfo;
 
@@ -313,10 +367,27 @@
     status_t submitRequestsHelper(const List<const CameraMetadata> &requests, bool repeating,
                                   int64_t *lastFrameNumber = NULL);
 
+
+    /**
+     * Implementation of android::hardware::camera::device::V3_2::ICameraDeviceCallback
+     */
+
+    hardware::Return<void> processCaptureResult(
+            const hardware::camera::device::V3_2::CaptureResult& result) override;
+    hardware::Return<void> notify(
+            const hardware::camera::device::V3_2::NotifyMsg& msg) override;
+
+    /**
+     * Common initialization code shared by both HAL paths
+     *
+     * Must be called with mLock and mInterfaceLock held.
+     */
+    status_t initializeCommonLocked();
+
     /**
      * Get the last request submitted to the hal by the request thread.
      *
-     * Takes mLock.
+     * Must be called with mLock held.
      */
     virtual CameraMetadata getLatestRequestLocked();
 
@@ -434,6 +505,24 @@
      */
     static android_dataspace mapToLegacyDataspace(android_dataspace dataSpace);
 
+    /**
+     * Helper functions to map between framework and HIDL values
+     */
+    static hardware::graphics::common::V1_0::PixelFormat mapToPixelFormat(int frameworkFormat);
+    static hardware::camera::device::V3_2::DataspaceFlags mapToHidlDataspace(
+            android_dataspace dataSpace);
+    static hardware::camera::device::V3_2::ConsumerUsageFlags mapToConsumerUsage(uint32_t usage);
+    static hardware::camera::device::V3_2::StreamRotation mapToStreamRotation(
+            camera3_stream_rotation_t rotation);
+    static hardware::camera::device::V3_2::StreamConfigurationMode mapToStreamConfigurationMode(
+            camera3_stream_configuration_mode_t operationMode);
+    static camera3_buffer_status_t mapHidlBufferStatus(hardware::camera::device::V3_2::BufferStatus status);
+    static int mapToFrameworkFormat(hardware::graphics::common::V1_0::PixelFormat pixelFormat);
+    static uint32_t mapConsumerToFrameworkUsage(
+            hardware::camera::device::V3_2::ConsumerUsageFlags usage);
+    static uint32_t mapProducerToFrameworkUsage(
+            hardware::camera::device::V3_2::ProducerUsageFlags usage);
+
     struct RequestTrigger {
         // Metadata tag number, e.g. android.control.aePrecaptureTrigger
         uint32_t metadataTag;
@@ -460,8 +549,10 @@
 
         RequestThread(wp<Camera3Device> parent,
                 sp<camera3::StatusTracker> statusTracker,
-                camera3_device_t *hal3Device,
+                HalInterface* interface,
+                uint32_t deviceVersion,
                 bool aeLockAvailable);
+        ~RequestThread();
 
         void     setNotificationListener(wp<NotificationListener> listener);
 
@@ -541,7 +632,7 @@
         virtual bool threadLoop();
 
       private:
-        static int         getId(const wp<Camera3Device> &device);
+        static const String8& getId(const wp<Camera3Device> &device);
 
         status_t           queueTriggerLocked(RequestTrigger trigger);
         // Mix-in queued triggers into this request
@@ -602,11 +693,12 @@
 
         wp<Camera3Device>  mParent;
         wp<camera3::StatusTracker>  mStatusTracker;
-        camera3_device_t  *mHal3Device;
+        HalInterface*      mInterface;
+        uint32_t           mDeviceVersion;
 
         wp<NotificationListener> mListener;
 
-        const int          mId;       // The camera ID
+        const String8&     mId;       // The camera ID
         int                mStatusId; // The RequestThread's component ID for
                                       // status tracking
 
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.cpp b/services/camera/libcameraservice/device3/Camera3Stream.cpp
index 3ffd9d1..c3b7565 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Stream.cpp
@@ -166,7 +166,7 @@
     return (mState == STATE_IN_CONFIG) || (mState == STATE_IN_RECONFIG);
 }
 
-status_t Camera3Stream::finishConfiguration(camera3_device *hal3Device) {
+status_t Camera3Stream::finishConfiguration() {
     ATRACE_CALL();
     Mutex::Autolock l(mLock);
     switch (mState) {
@@ -216,14 +216,6 @@
         return res;
     }
 
-    res = registerBuffersLocked(hal3Device);
-    if (res != OK) {
-        ALOGE("%s: Unable to register stream buffers with HAL: %s (%d)",
-                __FUNCTION__, strerror(-res), res);
-        mState = STATE_ERROR;
-        return res;
-    }
-
     mState = STATE_CONFIGURED;
 
     return res;
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.h b/services/camera/libcameraservice/device3/Camera3Stream.h
index 1ff215d..471b393 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.h
+++ b/services/camera/libcameraservice/device3/Camera3Stream.h
@@ -144,6 +144,10 @@
     int               getFormat() const;
     android_dataspace getDataSpace() const;
 
+    camera3_stream*   asHalStream() override {
+        return this;
+    }
+
     /**
      * Start the stream configuration process. Returns a handle to the stream's
      * information to be passed into the HAL device's configure_streams call.
@@ -165,11 +169,10 @@
     bool             isConfiguring() const;
 
     /**
-     * Completes the stream configuration process. During this call, the stream
-     * may call the device's register_stream_buffers() method. The stream
-     * information structure returned by startConfiguration() may no longer be
-     * modified after this call, but can still be read until the destruction of
-     * the stream.
+     * Completes the stream configuration process. The stream information
+     * structure returned by startConfiguration() may no longer be modified
+     * after this call, but can still be read until the destruction of the
+     * stream.
      *
      * Returns:
      *   OK on a successful configuration
@@ -178,7 +181,7 @@
      *   INVALID_OPERATION in case connecting to the consumer failed or consumer
      *       doesn't exist yet.
      */
-    status_t         finishConfiguration(camera3_device *hal3Device);
+    status_t         finishConfiguration();
 
     /**
      * Cancels the stream configuration process. This returns the stream to the
diff --git a/services/camera/libcameraservice/device3/Camera3StreamInterface.h b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
index 6cb7a54..ceea08a 100644
--- a/services/camera/libcameraservice/device3/Camera3StreamInterface.h
+++ b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
@@ -72,6 +72,11 @@
     virtual android_dataspace getDataSpace() const = 0;
 
     /**
+     * Get a HAL3 handle for the stream, without starting stream configuration.
+     */
+    virtual camera3_stream* asHalStream() = 0;
+
+    /**
      * Start the stream configuration process. Returns a handle to the stream's
      * information to be passed into the HAL device's configure_streams call.
      *
@@ -104,7 +109,7 @@
      *   NO_MEMORY in case of an error registering buffers
      *   INVALID_OPERATION in case connecting to the consumer failed
      */
-    virtual status_t finishConfiguration(camera3_device *hal3Device) = 0;
+    virtual status_t finishConfiguration() = 0;
 
     /**
      * Cancels the stream configuration process. This returns the stream to the
diff --git a/services/camera/libcameraservice/tests/Android.mk b/services/camera/libcameraservice/tests/Android.mk
new file mode 100644
index 0000000..179643b
--- /dev/null
+++ b/services/camera/libcameraservice/tests/Android.mk
@@ -0,0 +1,38 @@
+# Copyright 2013 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.
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= $(call all-cpp-files-under, .)
+
+LOCAL_SHARED_LIBRARIES := \
+    libcutils \
+    libcameraservice \
+    libhidlbase \
+    liblog \
+    libutils \
+    android.hardware.camera.common@1.0 \
+    android.hardware.camera.provider@2.4 \
+    android.hardware.camera.device@1.0 \
+    android.hardware.camera.device@3.2
+
+LOCAL_C_INCLUDES += \
+
+LOCAL_CFLAGS += -Wall -Wextra -Werror
+
+LOCAL_MODULE:= cameraservice_test
+LOCAL_MODULE_TAGS := tests
+
+include $(BUILD_NATIVE_TEST)
diff --git a/services/camera/libcameraservice/tests/CameraProviderManagerTest.cpp b/services/camera/libcameraservice/tests/CameraProviderManagerTest.cpp
new file mode 100644
index 0000000..eb934ba
--- /dev/null
+++ b/services/camera/libcameraservice/tests/CameraProviderManagerTest.cpp
@@ -0,0 +1,141 @@
+/*
+ * 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_NDEBUG 0
+#define LOG_TAG "CameraProviderManagerTest"
+
+#include "../common/CameraProviderManager.h"
+#include <android/hidl/manager/1.0/IServiceManager.h>
+#include <android/hidl/manager/1.0/IServiceNotification.h>
+
+#include <gtest/gtest.h>
+
+using namespace android;
+using namespace android::hardware::camera;
+using android::hardware::camera::common::V1_0::Status;
+
+/**
+ * Basic test implementation of a camera provider
+ */
+struct TestICameraProvider : virtual public provider::V2_4::ICameraProvider {
+    sp<provider::V2_4::ICameraProviderCallbacks> mCallbacks;
+
+    std::vector<hardware::hidl_string> mDeviceNames;
+
+    TestICameraProvider() {
+        mDeviceNames.push_back("device@3.2/test/0");
+        mDeviceNames.push_back("device@1.0/test/0");
+        mDeviceNames.push_back("device@3.2/test/1");
+    }
+
+    virtual hardware::Return<Status> setCallbacks(
+            const sp<provider::V2_4::ICameraProviderCallbacks>& callbacks) override {
+        mCallbacks = callbacks;
+        return hardware::Return<Status>(Status::OK);
+    }
+
+    using getVendorTags_cb = std::function<void(Status status,
+            const hardware::hidl_vec<common::V1_0::VendorTagSection>& sections)>;
+    virtual hardware::Return<void> getVendorTags(getVendorTags_cb _hidl_cb) override {
+        hardware::hidl_vec<common::V1_0::VendorTagSection> sections;
+        _hidl_cb(Status::OK, sections);
+        return hardware::Void();
+    }
+
+    using getCameraIdList_cb = std::function<void(Status status,
+            const hardware::hidl_vec<hardware::hidl_string>& cameraDeviceNames)>;
+    virtual hardware::Return<void> getCameraIdList(getCameraIdList_cb _hidl_cb) override {
+        _hidl_cb(Status::OK, mDeviceNames);
+        return hardware::Void();
+    }
+
+    using getCameraDeviceInterface_V1_x_cb = std::function<void(Status status,
+            const sp<device::V1_0::ICameraDevice>& device)>;
+    virtual hardware::Return<void> getCameraDeviceInterface_V1_x(
+            const hardware::hidl_string& cameraDeviceName,
+            getCameraDeviceInterface_V1_x_cb _hidl_cb) override {
+        (void) cameraDeviceName;
+        _hidl_cb(Status::OK, nullptr);
+        return hardware::Void();
+    }
+
+    using getCameraDeviceInterface_V3_x_cb = std::function<void(Status status,
+            const sp<device::V3_2::ICameraDevice>& device)>;
+    virtual hardware::Return<void> getCameraDeviceInterface_V3_x(
+            const hardware::hidl_string& cameraDeviceName,
+            getCameraDeviceInterface_V3_x_cb _hidl_cb) override {
+        (void) cameraDeviceName;
+        _hidl_cb(Status::OK, nullptr);
+        return hardware::Void();
+    }
+
+};
+
+/**
+ * Simple test version of the interaction proxy, to use to inject onRegistered calls to the
+ * CameraProviderManager
+ */
+struct TestInteractionProxy : public CameraProviderManager::ServiceInteractionProxy {
+    sp<hidl::manager::V1_0::IServiceNotification> mManagerNotificationInterface;
+    const sp<TestICameraProvider> mTestCameraProvider;
+
+    TestInteractionProxy() :
+            mTestCameraProvider(new TestICameraProvider()) {
+
+    }
+    std::string mLastRequestedServiceName;
+
+    virtual ~TestInteractionProxy() {}
+
+    virtual bool registerForNotifications(
+            const std::string &serviceName,
+            const sp<hidl::manager::V1_0::IServiceNotification> &notification) override {
+        (void) serviceName;
+        mManagerNotificationInterface = notification;
+        return true;
+    }
+
+    virtual sp<hardware::camera::provider::V2_4::ICameraProvider> getService(
+            const std::string &serviceName) override {
+        mLastRequestedServiceName = serviceName;
+        return mTestCameraProvider;
+    }
+
+};
+
+TEST(CameraProviderManagerTest, InitializeTest) {
+
+    status_t res;
+    sp<CameraProviderManager> providerManager = new CameraProviderManager();
+    TestInteractionProxy serviceProxy{};
+
+    res = providerManager->initialize(&serviceProxy);
+    ASSERT_EQ(res, OK) << "Unable to initialize provider manager";
+
+    hardware::hidl_string legacyInstanceName = "legacy/0";
+    ASSERT_EQ(serviceProxy.mLastRequestedServiceName, legacyInstanceName) <<
+            "Legacy instance not requested from service manager";
+
+    hardware::hidl_string testProviderFqInterfaceName =
+            "android.hardware.camera.provider@2.4::ICameraProvider";
+    hardware::hidl_string testProviderInstanceName = "test/0";
+    serviceProxy.mManagerNotificationInterface->onRegistration(
+            testProviderFqInterfaceName,
+            testProviderInstanceName, false);
+
+    ASSERT_EQ(serviceProxy.mLastRequestedServiceName, testProviderInstanceName) <<
+            "Incorrect instance requested from service manager";
+}
diff --git a/services/medialog/Android.mk b/services/medialog/Android.mk
index a1da63d..423b186 100644
--- a/services/medialog/Android.mk
+++ b/services/medialog/Android.mk
@@ -4,7 +4,7 @@
 
 LOCAL_SRC_FILES := MediaLogService.cpp IMediaLogService.cpp
 
-LOCAL_SHARED_LIBRARIES := libbinder libutils liblog libnbaio
+LOCAL_SHARED_LIBRARIES := libbinder libutils liblog libnbaio libaudioutils
 
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
diff --git a/services/medialog/MediaLogService.cpp b/services/medialog/MediaLogService.cpp
index f85aa13..ab2f925 100644
--- a/services/medialog/MediaLogService.cpp
+++ b/services/medialog/MediaLogService.cpp
@@ -35,7 +35,7 @@
             shared->size() < NBLog::Timeline::sharedSize(size)) {
         return;
     }
-    sp<NBLog::Reader> reader(new NBLog::Reader(size, shared));
+    sp<NBLog::Reader> reader(new NBLog::Reader(shared, size));
     NamedReader namedReader(reader, name);
     Mutex::Autolock _l(mLock);
     mNamedReaders.add(namedReader);
diff --git a/services/radio/HidlUtils.cpp b/services/radio/HidlUtils.cpp
index bfced7a..3b33386 100644
--- a/services/radio/HidlUtils.cpp
+++ b/services/radio/HidlUtils.cpp
@@ -122,8 +122,7 @@
 
 //static
 void HidlUtils::convertProgramInfoFromHal(radio_program_info_t *info,
-                                          const ProgramInfo *halInfo,
-                                          bool withMetadata)
+                                          const ProgramInfo *halInfo)
 {
     info->channel = halInfo->channel;
     info->sub_channel = halInfo->subChannel;
@@ -131,10 +130,8 @@
     info->stereo = halInfo->stereo;
     info->digital = halInfo->digital;
     info->signal_strength = halInfo->signalStrength;
-    if (withMetadata && halInfo->metadata.size() != 0) {
-        convertMetaDataFromHal(&info->metadata, halInfo->metadata,
-                               halInfo->channel, halInfo->subChannel);
-    }
+    convertMetaDataFromHal(&info->metadata, halInfo->metadata,
+                           halInfo->channel, halInfo->subChannel);
 }
 
 //static
diff --git a/services/radio/HidlUtils.h b/services/radio/HidlUtils.h
index 091abb7..c771060 100644
--- a/services/radio/HidlUtils.h
+++ b/services/radio/HidlUtils.h
@@ -38,8 +38,7 @@
     static void convertBandConfigToHal(BandConfig *halConfig,
                                        const radio_hal_band_config_t *config);
     static void convertProgramInfoFromHal(radio_program_info_t *info,
-                                          const ProgramInfo *halInfo,
-                                          bool withMetadata);
+                                          const ProgramInfo *halInfo);
     static void convertMetaDataFromHal(radio_metadata_t **metadata,
                                        const hidl_vec<MetaData>& halMetadata,
                                        uint32_t channel,
diff --git a/services/radio/RadioHalHidl.cpp b/services/radio/RadioHalHidl.cpp
index c7a899a..34a6db7 100644
--- a/services/radio/RadioHalHidl.cpp
+++ b/services/radio/RadioHalHidl.cpp
@@ -39,11 +39,6 @@
     return new RadioHalHidl(classId);
 }
 
-void RadioHalHidl::crashIfHalIsDead(const Status& status) {
-    LOG_ALWAYS_FATAL_IF(
-            status.transactionError() == DEAD_OBJECT, "HAL server crashed, need to restart");
-}
-
 int RadioHalHidl::getProperties(radio_hal_properties_t *properties)
 {
     ALOGV("%s IN", __FUNCTION__);
@@ -52,7 +47,7 @@
         return -ENODEV;
     }
     Properties halProperties;
-    Result halResult;
+    Result halResult = Result::NOT_INITIALIZED;
     Return<void> hidlReturn =
             module->getProperties([&](Result result, const Properties& properties) {
                     halResult = result;
@@ -61,7 +56,6 @@
                     }
                 });
 
-    crashIfHalIsDead(hidlReturn.getStatus());
     if (halResult == Result::OK) {
         HidlUtils::convertPropertiesFromHal(properties, &halProperties);
     }
@@ -80,7 +74,7 @@
     sp<Tuner> tunerImpl = new Tuner(callback, this);
 
     BandConfig halConfig;
-    Result halResult;
+    Result halResult = Result::NOT_INITIALIZED;
     sp<ITuner> halTuner;
 
     HidlUtils::convertBandConfigToHal(&halConfig, config);
@@ -93,7 +87,6 @@
                     }
                 });
 
-    crashIfHalIsDead(hidlReturn.getStatus());
     if (halResult == Result::OK) {
         tunerImpl->setHalTuner(halTuner);
         tuner = tunerImpl;
@@ -154,7 +147,6 @@
     HidlUtils::convertBandConfigToHal(&halConfig, config);
 
     Return<Result> hidlResult = mHalTuner->setConfiguration(halConfig);
-    checkHidlStatus(hidlResult.getStatus());
     return HidlUtils::convertHalResult(hidlResult);
 }
 
@@ -173,8 +165,7 @@
                         halConfig = config;
                     }
                 });
-    status_t status = checkHidlStatus(hidlReturn.getStatus());
-    if (status == NO_ERROR && halResult == Result::OK) {
+    if (hidlReturn.isOk() && halResult == Result::OK) {
         HidlUtils::convertBandConfigFromHal(config, &halConfig);
     }
     return HidlUtils::convertHalResult(halResult);
@@ -188,7 +179,6 @@
     }
     Return<Result> hidlResult =
             mHalTuner->scan(static_cast<Direction>(direction), skip_sub_channel);
-    checkHidlStatus(hidlResult.getStatus());
     return HidlUtils::convertHalResult(hidlResult);
 }
 
@@ -200,7 +190,6 @@
     }
     Return<Result> hidlResult =
             mHalTuner->step(static_cast<Direction>(direction), skip_sub_channel);
-    checkHidlStatus(hidlResult.getStatus());
     return HidlUtils::convertHalResult(hidlResult);
 }
 
@@ -212,7 +201,6 @@
     }
     Return<Result> hidlResult =
             mHalTuner->tune(channel, sub_channel);
-    checkHidlStatus(hidlResult.getStatus());
     return HidlUtils::convertHalResult(hidlResult);
 }
 
@@ -223,7 +211,6 @@
         return -ENODEV;
     }
     Return<Result> hidlResult = mHalTuner->cancel();
-    checkHidlStatus(hidlResult.getStatus());
     return HidlUtils::convertHalResult(hidlResult);
 }
 
@@ -233,19 +220,20 @@
     if (mHalTuner == 0) {
         return -ENODEV;
     }
+    if (info == nullptr || info->metadata == nullptr) {
+        return BAD_VALUE;
+    }
     ProgramInfo halInfo;
     Result halResult;
-    bool withMetaData = (info->metadata != NULL);
     Return<void> hidlReturn = mHalTuner->getProgramInformation(
-                    withMetaData, [&](Result result, const ProgramInfo& info) {
-                        halResult = result;
-                        if (result == Result::OK) {
-                            halInfo = info;
-                        }
-    });
-    status_t status = checkHidlStatus(hidlReturn.getStatus());
-    if (status == NO_ERROR && halResult == Result::OK) {
-        HidlUtils::convertProgramInfoFromHal(info, &halInfo, withMetaData);
+        [&](Result result, const ProgramInfo& info) {
+            halResult = result;
+            if (result == Result::OK) {
+                halInfo = info;
+            }
+        });
+    if (hidlReturn.isOk() && halResult == Result::OK) {
+        HidlUtils::convertProgramInfoFromHal(info, &halInfo);
     }
     return HidlUtils::convertHalResult(halResult);
 }
@@ -276,11 +264,9 @@
     memset(&event, 0, sizeof(radio_hal_event_t));
     event.type = RADIO_EVENT_TUNED;
     event.status = HidlUtils::convertHalResult(result);
-    HidlUtils::convertProgramInfoFromHal(&event.info, &info, true);
+    HidlUtils::convertProgramInfoFromHal(&event.info, &info);
     onCallback(&event);
-    if (event.info.metadata != NULL) {
-        radio_metadata_deallocate(event.info.metadata);
-    }
+    radio_metadata_deallocate(event.info.metadata);
     return Return<void>();
 }
 
@@ -290,7 +276,7 @@
     radio_hal_event_t event;
     memset(&event, 0, sizeof(radio_hal_event_t));
     event.type = RADIO_EVENT_AF_SWITCH;
-    HidlUtils::convertProgramInfoFromHal(&event.info, &info, true);
+    HidlUtils::convertProgramInfoFromHal(&event.info, &info);
     onCallback(&event);
     if (event.info.metadata != NULL) {
         radio_metadata_deallocate(event.info.metadata);
@@ -368,16 +354,6 @@
     mHalTuner.clear();
 }
 
-status_t RadioHalHidl::Tuner::checkHidlStatus(Status hidlStatus)
-{
-    status_t status = hidlStatus.transactionError();
-    if (status == DEAD_OBJECT) {
-        handleHwFailure();
-    }
-    RadioHalHidl::crashIfHalIsDead(hidlStatus);
-    return status;
-}
-
 void RadioHalHidl::Tuner::onCallback(radio_hal_event_t *halEvent)
 {
     if (mCallback != 0) {
diff --git a/services/radio/RadioHalHidl.h b/services/radio/RadioHalHidl.h
index 1657a40..b60a95e 100644
--- a/services/radio/RadioHalHidl.h
+++ b/services/radio/RadioHalHidl.h
@@ -45,8 +45,6 @@
 public:
                     RadioHalHidl(radio_class_t classId);
 
-        static void crashIfHalIsDead(const Status& status);
-
                     // RadioInterface
         virtual int getProperties(radio_hal_properties_t *properties);
         virtual int openTuner(const radio_hal_band_config_t *config,
@@ -88,7 +86,6 @@
 
                     void     onCallback(radio_hal_event_t *halEvent);
                     void     handleHwFailure();
-                    status_t checkHidlStatus(Status hidlStatus);
 
             sp<ITuner> mHalTuner;
             sp<TunerCallbackInterface>  mCallback;
diff --git a/services/soundtrigger/SoundTriggerHalHidl.cpp b/services/soundtrigger/SoundTriggerHalHidl.cpp
index c027799..eb9d38d 100644
--- a/services/soundtrigger/SoundTriggerHalHidl.cpp
+++ b/services/soundtrigger/SoundTriggerHalHidl.cpp
@@ -53,13 +53,13 @@
         });
     }
 
-    if (hidlReturn.getStatus().isOk()) {
+    if (hidlReturn.isOk()) {
         if (ret == 0) {
             convertPropertiesFromHal(properties, &halProperties);
         }
     } else {
-        ret = (int)hidlReturn.getStatus().transactionError();
-        crashIfHalIsDead(ret);
+        ALOGE("getProperties error %s", hidlReturn.description().c_str());
+        return UNKNOWN_ERROR;
     }
     ALOGI("getProperties ret %d", ret);
     return ret;
@@ -123,7 +123,7 @@
 
     delete halSoundModel;
 
-    if (hidlReturn.getStatus().isOk()) {
+    if (hidlReturn.isOk()) {
         if (ret == 0) {
             AutoMutex lock(mLock);
             *handle = (sound_model_handle_t)modelId;
@@ -131,12 +131,10 @@
             mSoundModels.add(*handle, model);
         }
     } else {
-        ret = (int)hidlReturn.getStatus().transactionError();
-        ALOGE("loadSoundModel error %d", ret);
-        crashIfHalIsDead(ret);
+        ALOGE("loadSoundModel error %s", hidlReturn.description().c_str());
+        return UNKNOWN_ERROR;
     }
 
-
     return ret;
 }
 
@@ -158,13 +156,13 @@
         AutoMutex lock(mHalLock);
         hidlReturn = soundtrigger->unloadSoundModel(model->mHalHandle);
     }
-    int ret = (int)hidlReturn.getStatus().transactionError();
-    ALOGE_IF(ret != 0, "unloadSoundModel error %d", ret);
-    crashIfHalIsDead(ret);
-    if (ret == 0) {
-        ret = hidlReturn;
+
+    if (!hidlReturn.isOk()) {
+        ALOGE("unloadSoundModel error %s", hidlReturn.description().c_str());
+        return UNKNOWN_ERROR;
     }
-    return ret;
+
+    return hidlReturn;
 }
 
 int SoundTriggerHalHidl::startRecognition(sound_model_handle_t handle,
@@ -197,13 +195,11 @@
 
     delete halConfig;
 
-    int ret = (int)hidlReturn.getStatus().transactionError();
-    ALOGE_IF(ret != 0, "startRecognition error %d", ret);
-    crashIfHalIsDead(ret);
-    if (ret == 0) {
-        ret = hidlReturn;
+    if (!hidlReturn.isOk()) {
+        ALOGE("startRecognition error %s", hidlReturn.description().c_str());
+        return UNKNOWN_ERROR;
     }
-    return ret;
+    return hidlReturn;
 }
 
 int SoundTriggerHalHidl::stopRecognition(sound_model_handle_t handle)
@@ -225,13 +221,11 @@
         hidlReturn = soundtrigger->stopRecognition(model->mHalHandle);
     }
 
-    int ret = (int)hidlReturn.getStatus().transactionError();
-    ALOGE_IF(ret != 0, "stopRecognition error %d", ret);
-    crashIfHalIsDead(ret);
-    if (ret == 0) {
-        ret = hidlReturn;
+    if (!hidlReturn.isOk()) {
+        ALOGE("stopRecognition error %s", hidlReturn.description().c_str());
+        return UNKNOWN_ERROR;
     }
-    return ret;
+    return hidlReturn;
 }
 
 int SoundTriggerHalHidl::stopAllRecognitions()
@@ -247,13 +241,11 @@
         hidlReturn = soundtrigger->stopAllRecognitions();
     }
 
-    int ret = (int)hidlReturn.getStatus().transactionError();
-    ALOGE_IF(ret != 0, "stopAllRecognitions error %d", ret);
-    crashIfHalIsDead(ret);
-    if (ret == 0) {
-        ret = hidlReturn;
+    if (!hidlReturn.isOk()) {
+        ALOGE("stopAllRecognitions error %s", hidlReturn.description().c_str());
+        return UNKNOWN_ERROR;
     }
-    return ret;
+    return hidlReturn;
 }
 
 SoundTriggerHalHidl::SoundTriggerHalHidl(const char *moduleName)
@@ -279,11 +271,6 @@
     return mISoundTrigger;
 }
 
-void SoundTriggerHalHidl::crashIfHalIsDead(int ret)
-{
-    LOG_ALWAYS_FATAL_IF(ret == -EPIPE, "HAL server crashed, need to restart");
-}
-
 sp<SoundTriggerHalHidl::SoundModel> SoundTriggerHalHidl::getModel(sound_model_handle_t handle)
 {
     AutoMutex lock(mLock);
diff --git a/services/soundtrigger/SoundTriggerHalHidl.h b/services/soundtrigger/SoundTriggerHalHidl.h
index b235e1c..f084b2b 100644
--- a/services/soundtrigger/SoundTriggerHalHidl.h
+++ b/services/soundtrigger/SoundTriggerHalHidl.h
@@ -143,7 +143,6 @@
 
         uint32_t nextUniqueId();
         sp<ISoundTriggerHw> getService();
-        void crashIfHalIsDead(int ret);
         sp<SoundModel> getModel(sound_model_handle_t handle);
         sp<SoundModel> removeModel(sound_model_handle_t handle);