Enable JAudioTrack. (f8726915) · Commits · e / os / android_frameworks_av

media/libmedia/include/media/JAudioAttributes.h

+1 −7

Original line number	Diff line number	Diff line
		@@ -26,8 +26,7 @@ class JAudioAttributes {
		public:
		/* Creates a Java AudioAttributes object. */
		static jobject createAudioAttributesObj(JNIEnv *env,
		const audio_attributes_t* pAttributes,
		audio_stream_type_t streamType) {
		const audio_attributes_t* pAttributes) {

		jclass jBuilderCls = env->FindClass("android/media/AudioAttributes$Builder");
		jmethodID jBuilderCtor = env->GetMethodID(jBuilderCls, "<init>", "()V");
		@@ -58,11 +57,6 @@ public:
		// TODO: Handle the 'tags' (char[] to HashSet<String>).
		// How to parse the char[]? Is there any example of it?
		// Also, the addTags() method is hidden.
		} else {
		// Call AudioAttributes.Builder.setLegacyStreamType().build()
		jmethodID jSetLegacyStreamType = env->GetMethodID(jBuilderCls, "setLegacyStreamType",
		"(I)Landroid/media/AudioAttributes$Builder;");
		jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetLegacyStreamType, streamType);
		}

		jmethodID jBuild = env->GetMethodID(jBuilderCls, "build",

media/libmediaplayer2/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -59,6 +59,7 @@ cc_library_static {
		"libstagefright_player2",
		"libstagefright_rtsp",
		"libstagefright_timedtext2",
		"libmedia2_jni_core",
		],

		export_include_dirs: [

media/libmediaplayer2/JAudioTrack.cpp

+132 −23

Original line number	Diff line number	Diff line
		@@ -28,7 +28,6 @@ namespace android {
		// TODO: Store Java class/methodID as a member variable in the class.
		// TODO: Add NULL && Exception checks after every JNI call.
		JAudioTrack::JAudioTrack( // < Usages of the arguments are below >
		audio_stream_type_t streamType, // AudioAudioAttributes
		uint32_t sampleRate, // AudioFormat && bufferSizeInBytes
		audio_format_t format, // AudioFormat && bufferSizeInBytes
		audio_channel_mask_t channelMask, // AudioFormat && bufferSizeInBytes
		@@ -40,8 +39,10 @@ JAudioTrack::JAudioTrack( // < Usages of the argumen
		float maxRequiredSpeed) { // bufferSizeInBytes

		JNIEnv *env = JavaVMHelper::getJNIEnv();

		jclass jAudioTrackCls = env->FindClass("android/media/AudioTrack");
		mAudioTrackCls = (jclass) env->NewGlobalRef(jAudioTrackCls);
		mAudioTrackCls = reinterpret_cast<jclass>(env->NewGlobalRef(jAudioTrackCls));
		env->DeleteLocalRef(jAudioTrackCls);

		maxRequiredSpeed = std::min(std::max(maxRequiredSpeed, 1.0f), AUDIO_TIMESTRETCH_SPEED_MAX);

		@@ -64,10 +65,13 @@ JAudioTrack::JAudioTrack( // < Usages of the argumen
		jmethodID jBuilderCtor = env->GetMethodID(jBuilderCls, "<init>", "()V");
		jobject jBuilderObj = env->NewObject(jBuilderCls, jBuilderCtor);

		jobject jAudioAttributesObj = JAudioAttributes::createAudioAttributesObj(env, pAttributes);
		mAudioAttributesObj = reinterpret_cast<jobject>(env->NewGlobalRef(jAudioAttributesObj));
		env->DeleteLocalRef(jAudioAttributesObj);

		jmethodID jSetAudioAttributes = env->GetMethodID(jBuilderCls, "setAudioAttributes",
		"(Landroid/media/AudioAttributes;)Landroid/media/AudioTrack$Builder;");
		jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetAudioAttributes,
		JAudioAttributes::createAudioAttributesObj(env, pAttributes, streamType));
		jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetAudioAttributes, mAudioAttributesObj);

		jmethodID jSetAudioFormat = env->GetMethodID(jBuilderCls, "setAudioFormat",
		"(Landroid/media/AudioFormat;)Landroid/media/AudioTrack$Builder;");
		@@ -100,7 +104,9 @@ JAudioTrack::JAudioTrack( // < Usages of the argumen
		}

		jmethodID jBuild = env->GetMethodID(jBuilderCls, "build", "()Landroid/media/AudioTrack;");
		mAudioTrackObj = env->CallObjectMethod(jBuilderObj, jBuild);
		jobject jAudioTrackObj = env->CallObjectMethod(jBuilderObj, jBuild);
		mAudioTrackObj = reinterpret_cast<jobject>(env->NewGlobalRef(jAudioTrackObj));
		env->DeleteLocalRef(jBuilderObj);

		if (cbf != NULL) {
		// Set offload mode callback
		@@ -118,6 +124,8 @@ JAudioTrack::JAudioTrack( // < Usages of the argumen
		JAudioTrack::~JAudioTrack() {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		env->DeleteGlobalRef(mAudioTrackCls);
		env->DeleteGlobalRef(mAudioTrackObj);
		env->DeleteGlobalRef(mAudioAttributesObj);
		}

		size_t JAudioTrack::frameCount() {
		@@ -151,21 +159,21 @@ status_t JAudioTrack::getPosition(uint32_t *position) {
		return NO_ERROR;
		}

		bool JAudioTrack::getTimestamp(AudioTimestamp& timestamp) {
		status_t JAudioTrack::getTimestamp(AudioTimestamp& timestamp) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();

		jclass jAudioTimeStampCls = env->FindClass("android/media/AudioTimestamp");
		jobject jAudioTimeStampObj = env->AllocObject(jAudioTimeStampCls);

		jfieldID jFramePosition = env->GetFieldID(jAudioTimeStampCls, "framePosition", "L");
		jfieldID jNanoTime = env->GetFieldID(jAudioTimeStampCls, "nanoTime", "L");
		jfieldID jFramePosition = env->GetFieldID(jAudioTimeStampCls, "framePosition", "J");
		jfieldID jNanoTime = env->GetFieldID(jAudioTimeStampCls, "nanoTime", "J");

		jmethodID jGetTimestamp = env->GetMethodID(mAudioTrackCls,
		"getTimestamp", "(Landroid/media/AudioTimestamp)B");
		"getTimestamp", "(Landroid/media/AudioTimestamp;)Z");
		bool success = env->CallBooleanMethod(mAudioTrackObj, jGetTimestamp, jAudioTimeStampObj);

		if (!success) {
		return false;
		return NO_INIT;
		}

		long long framePosition = env->GetLongField(jAudioTimeStampObj, jFramePosition);
		@@ -178,7 +186,7 @@ bool JAudioTrack::getTimestamp(AudioTimestamp& timestamp) {
		timestamp.mTime = ts;
		timestamp.mPosition = (uint32_t) framePosition;

		return true;
		return NO_ERROR;
		}

		status_t JAudioTrack::getTimestamp(ExtendedTimestamp *timestamp __unused) {
		@@ -423,6 +431,35 @@ audio_format_t JAudioTrack::format() {
		return audioFormatToNative(javaFormat);
		}

		size_t JAudioTrack::frameSize() {
		JNIEnv *env = JavaVMHelper::getJNIEnv();

		// TODO: Calculated here implementing the logic in AudioTrack.java
		// wait for AudioTrack.java exposing this parameter (i.e. getFrameSizeInBtytes())
		jmethodID jGetAudioFormat = env->GetMethodID(mAudioTrackCls, "getAudioFormat", "()I");
		int javaFormat = env->CallIntMethod(mAudioTrackObj, jGetAudioFormat);

		jclass jAudioFormatCls = env->FindClass("android/media/AudioFormat");
		jmethodID jIsEncodingLinearFrames = env->GetStaticMethodID(
		jAudioFormatCls, "isEncodingLinearFrames", "(I)Z");
		jboolean javaIsEncodingLinearFrames = env->CallStaticBooleanMethod(
		jAudioFormatCls, jIsEncodingLinearFrames, javaFormat);

		if (javaIsEncodingLinearFrames == false) {
		return 1;
		}

		jmethodID jGetBytesPerSample = env->GetStaticMethodID(jAudioFormatCls,
		"getBytesPerSample", "(I)I");
		int javaBytesPerSample = env->CallStaticIntMethod(jAudioFormatCls,
		jGetBytesPerSample, javaFormat);

		jmethodID jGetChannelCount = env->GetMethodID(mAudioTrackCls, "getChannelCount", "()I");
		int javaChannelCount = env->CallIntMethod(mAudioTrackObj, jGetChannelCount);

		return javaChannelCount * javaBytesPerSample;
		}

		status_t JAudioTrack::dump(int fd, const Vector<String16>& args __unused) const
		{
		String8 result;
		@@ -432,10 +469,6 @@ status_t JAudioTrack::dump(int fd, const Vector<String16>& args __unused) const
		// TODO: Remove logs that includes unavailable information from below.
		// result.appendFormat(" status(%d), state(%d), session Id(%d), flags(%#x)\n",
		// mStatus, mState, mSessionId, mFlags);
		// result.appendFormat(" stream type(%d), left - right volume(%f, %f)\n",
		// (mStreamType == AUDIO_STREAM_DEFAULT) ?
		// audio_attributes_to_stream_type(&mAttributes) : mStreamType,
		// mVolume[AUDIO_INTERLEAVE_LEFT], mVolume[AUDIO_INTERLEAVE_RIGHT]);
		// result.appendFormat(" format(%#x), channel mask(%#x), channel count(%u)\n",
		// format(), mChannelMask, channelCount());
		// result.appendFormat(" sample rate(%u), original sample rate(%u), speed(%f)\n",
		@@ -462,7 +495,7 @@ audio_port_handle_t JAudioTrack::getRoutedDeviceId() {
		return AUDIO_PORT_HANDLE_NONE;
		}

		jclass jAudioDeviceInfoCls = env->FindClass("Landroid/media/AudioDeviceInfo");
		jclass jAudioDeviceInfoCls = env->FindClass("android/media/AudioDeviceInfo");
		jmethodID jGetId = env->GetMethodID(jAudioDeviceInfoCls, "getId", "()I");
		jint routedDeviceId = env->CallIntMethod(jAudioDeviceInfoObj, jGetId);
		return routedDeviceId;
		@@ -478,13 +511,22 @@ audio_session_t JAudioTrack::getAudioSessionId() {
		status_t JAudioTrack::setOutputDevice(audio_port_handle_t deviceId) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		jclass jMP2ImplCls = env->FindClass("android/media/MediaPlayer2Impl");
		jmethodID jSetAudioOutputDeviceById = env->GetMethodID(
		jmethodID jSetAudioOutputDeviceById = env->GetStaticMethodID(
		jMP2ImplCls, "setAudioOutputDeviceById", "(Landroid/media/AudioTrack;I)Z");
		jboolean result = env->CallStaticBooleanMethod(
		jMP2ImplCls, jSetAudioOutputDeviceById, mAudioTrackObj, deviceId);
		return result == true ? NO_ERROR : BAD_VALUE;
		}

		audio_stream_type_t JAudioTrack::getAudioStreamType() {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		jclass jAudioAttributesCls = env->FindClass("android/media/AudioAttributes");
		jmethodID jGetVolumeControlStream = env->GetMethodID(jAudioAttributesCls,
		"getVolumeControlStream", "()I");
		int javaAudioStreamType = env->CallIntMethod(mAudioAttributesObj, jGetVolumeControlStream);
		return (audio_stream_type_t)javaAudioStreamType;
		}

		status_t JAudioTrack::pendingDuration(int32_t *msec) {
		if (msec == nullptr) {
		return BAD_VALUE;
		@@ -526,18 +568,85 @@ status_t JAudioTrack::pendingDuration(int32_t *msec) {
		return NO_ERROR;
		}

		status_t JAudioTrack::addAudioDeviceCallback(
		const sp<AudioSystem::AudioDeviceCallback>& callback __unused) {
		// TODO: Implement this after appropriate Java AudioTrack method is available.
		status_t JAudioTrack::addAudioDeviceCallback(jobject listener, jobject handler) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		jmethodID jAddOnRoutingChangedListener = env->GetMethodID(mAudioTrackCls,
		"addOnRoutingChangedListener",
		"(Landroid/media/AudioRouting$OnRoutingChangedListener;Landroid/os/Handler;)V");
		env->CallVoidMethod(mAudioTrackObj, jAddOnRoutingChangedListener, listener, handler);
		return NO_ERROR;
		}

		status_t JAudioTrack::removeAudioDeviceCallback(
		const sp<AudioSystem::AudioDeviceCallback>& callback __unused) {
		// TODO: Implement this after appropriate Java AudioTrack method is available.
		status_t JAudioTrack::removeAudioDeviceCallback(jobject listener) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		jmethodID jRemoveOnRoutingChangedListener = env->GetMethodID(mAudioTrackCls,
		"removeOnRoutingChangedListener",
		"(Landroid/media/AudioRouting$OnRoutingChangedListener;)V");
		env->CallVoidMethod(mAudioTrackObj, jRemoveOnRoutingChangedListener, listener);
		return NO_ERROR;
		}

		void JAudioTrack::registerRoutingDelegates(
		std::vector<std::pair<jobject, jobject>>& routingDelegates) {
		for (std::vector<std::pair<jobject, jobject>>::iterator it = routingDelegates.begin();
		it != routingDelegates.end(); it++) {
		addAudioDeviceCallback(it->second, getHandler(it->second));
		}
		}

		/////////////////////////////////////////////////////////////
		/// Static methods begin ///
		/////////////////////////////////////////////////////////////
		jobject JAudioTrack::getListener(const jobject routingDelegateObj) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		jclass jRoutingDelegateCls = env->FindClass("android/media/RoutingDelegate");
		jmethodID jGetListener = env->GetMethodID(jRoutingDelegateCls,
		"getListener", "()Landroid/media/AudioRouting$OnRoutingChangedListener;");
		return env->CallObjectMethod(routingDelegateObj, jGetListener);
		}

		jobject JAudioTrack::getHandler(const jobject routingDelegateObj) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		jclass jRoutingDelegateCls = env->FindClass("android/media/RoutingDelegate");
		jmethodID jGetHandler = env->GetMethodID(jRoutingDelegateCls,
		"getHandler", "()Landroid/os/Handler;");
		return env->CallObjectMethod(routingDelegateObj, jGetHandler);
		}

		jobject JAudioTrack::addGlobalRef(const jobject obj) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		return reinterpret_cast<jobject>(env->NewGlobalRef(obj));
		}

		status_t JAudioTrack::removeGlobalRef(const jobject obj) {
		if (obj == NULL) {
		return BAD_VALUE;
		}
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		env->DeleteGlobalRef(obj);
		return NO_ERROR;
		}

		jobject JAudioTrack::findByKey(std::vector<std::pair<jobject, jobject>>& mp, const jobject key) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		for (std::vector<std::pair<jobject, jobject>>::iterator it = mp.begin(); it != mp.end(); it++) {
		if (env->IsSameObject(it->first, key)) {
		return it->second;
		}
		}
		return nullptr;
		}

		void JAudioTrack::eraseByKey(std::vector<std::pair<jobject, jobject>>& mp, const jobject key) {
		JNIEnv *env = JavaVMHelper::getJNIEnv();
		for (std::vector<std::pair<jobject, jobject>>::iterator it = mp.begin(); it != mp.end(); it++) {
		if (env->IsSameObject(it->first, key)) {
		mp.erase(it);
		return;
		}
		}
		}

		/////////////////////////////////////////////////////////////
		/// Private method begins ///
		/////////////////////////////////////////////////////////////

media/libmediaplayer2/MediaPlayer2AudioOutput.cpp

+174 −195

File changed.

Preview size limit exceeded, changes collapsed.

media/libmediaplayer2/include/mediaplayer2/JAudioTrack.h

+69 −17

Original line number	Diff line number	Diff line
		@@ -17,6 +17,8 @@
		#ifndef ANDROID_JAUDIOTRACK_H
		#define ANDROID_JAUDIOTRACK_H

		#include <vector>
		#include <utility>
		#include <jni.h>
		#include <media/AudioResamplerPublic.h>
		#include <media/AudioSystem.h>
		@@ -29,7 +31,7 @@

		namespace android {

		class JAudioTrack {
		class JAudioTrack : public RefBase {
		public:

		/* Events used by AudioTrack callback function (callback_t).
		@@ -37,6 +39,8 @@ public:
		*/
		enum event_type {
		EVENT_MORE_DATA = 0, // Request to write more data to buffer.
		EVENT_UNDERRUN = 1, // Buffer underrun occurred. This will not occur for
		// static tracks.
		EVENT_NEW_IAUDIOTRACK = 6, // IAudioTrack was re-created, either due to re-routing and
		// voluntary invalidation by mediaserver, or mediaserver crash.
		EVENT_STREAM_END = 7, // Sent after all the buffers queued in AF and HW are played
		@@ -104,8 +108,7 @@ public:
		*
		* TODO: Revive removed arguments after offload mode is supported.
		*/
		JAudioTrack(audio_stream_type_t streamType,
		uint32_t sampleRate,
		JAudioTrack(uint32_t sampleRate,
		audio_format_t format,
		audio_channel_mask_t channelMask,
		callback_t cbf,
		@@ -158,10 +161,10 @@ public:
		* Caution: calling this method too often may be inefficient;
		* if you need a high resolution mapping between frame position and presentation time,
		* consider implementing that at application level, based on the low resolution timestamps.
		* Returns true if timestamp is valid.
		* The timestamp parameter is undefined on return, if false is returned.
		* Returns NO_ERROR if timestamp is valid.
		* NO_INIT if finds error, and timestamp parameter will be undefined on return.
		*/
		bool getTimestamp(AudioTimestamp& timestamp);
		status_t getTimestamp(AudioTimestamp& timestamp);

		// TODO: This doc is just copied from AudioTrack.h. Revise it after implemenation.
		/* Return the extended timestamp, with additional timebase info and improved drain behavior.
		@@ -324,6 +327,8 @@ public:

		audio_format_t format();

		size_t frameSize();

		/*
		* Dumps the state of an audio track.
		* Not a general-purpose API; intended only for use by media player service to dump its tracks.
		@@ -355,6 +360,11 @@ public:
		/* Returns the flags */
		audio_output_flags_t getFlags() const { return mFlags; }

		/* We don't keep stream type here,
		* instead, we keep attributes and call getVolumeControlStream() to get stream type
		*/
		audio_stream_type_t getAudioStreamType();

		/* Obtain the pending duration in milliseconds for playback of pure PCM data remaining in
		* AudioTrack.
		*
		@@ -369,33 +379,75 @@ public:
		* Replaces any previously installed callback.
		*
		* Parameters:
		*
		* callback: The callback interface
		* Listener: the listener to receive notification of rerouting events.
		* Handler: the handler to handler the rerouting events.
		*
		* Returns NO_ERROR if successful.
		* INVALID_OPERATION if the same callback is already installed.
		* NO_INIT or PREMISSION_DENIED if AudioFlinger service is not reachable
		* BAD_VALUE if the callback is NULL
		* (TODO) INVALID_OPERATION if the same callback is already installed.
		* (TODO) NO_INIT or PREMISSION_DENIED if AudioFlinger service is not reachable
		* (TODO) BAD_VALUE if the callback is NULL
		*/
		status_t addAudioDeviceCallback(const sp<AudioSystem::AudioDeviceCallback>& callback);
		status_t addAudioDeviceCallback(jobject listener, jobject rd);

		/* Removes an AudioDeviceCallback.
		*
		* Parameters:
		*
		* callback: The callback interface
		* Listener: the listener to receive notification of rerouting events.
		*
		* Returns NO_ERROR if successful.
		* INVALID_OPERATION if the callback is not installed
		* BAD_VALUE if the callback is NULL
		* (TODO) INVALID_OPERATION if the callback is not installed
		* (TODO) BAD_VALUE if the callback is NULL
		*/
		status_t removeAudioDeviceCallback(jobject listener);

		/* Register all backed-up routing delegates.
		*
		* Parameters:
		* routingDelegates: backed-up routing delegates
		*
		*/
		void registerRoutingDelegates(std::vector<std::pair<jobject, jobject>>& routingDelegates);

		/* get listener from RoutingDelegate object
		*/
		static jobject getListener(const jobject routingDelegateObj);

		/* get handler from RoutingDelegate object
		*/
		static jobject getHandler(const jobject routingDelegateObj);

		/* convert local reference to global reference.
		*/
		static jobject addGlobalRef(const jobject obj);

		/* erase global reference.
		*
		* Returns NO_ERROR if succeeds
		* BAD_VALUE if obj is NULL
		*/
		static status_t removeGlobalRef(const jobject obj);

		/*
		* Parameters:
		* map and key
		*
		* Returns value if key is in the map
		* nullptr if key is not in the map
		*/
		static jobject findByKey(std::vector<std::pair<jobject, jobject>>& mp, const jobject key);

		/*
		* Parameters:
		* map and key
		*/
		status_t removeAudioDeviceCallback(const sp<AudioSystem::AudioDeviceCallback>& callback);
		static void eraseByKey(std::vector<std::pair<jobject, jobject>>& mp, const jobject key);

		private:
		audio_output_flags_t mFlags;

		jclass mAudioTrackCls;
		jobject mAudioTrackObj;
		jobject mAudioAttributesObj;

		/* Creates a Java VolumeShaper.Configuration object from VolumeShaper::Configuration */
		jobject createVolumeShaperConfigurationObj(