Support for audio attributes on audio output of media player (d9d7fa08) · Commits · e / os / android_frameworks_av

include/media/AudioTrack.h

+5 −3

Original line number	Diff line number	Diff line
		@@ -188,7 +188,8 @@ public:
		transfer_type transferType = TRANSFER_DEFAULT,
		const audio_offload_info_t *offloadInfo = NULL,
		int uid = -1,
		pid_t pid = -1);
		pid_t pid = -1,
		const audio_attributes_t* pAttributes = NULL);

		/* Creates an audio track and registers it with AudioFlinger.
		* With this constructor, the track is configured for static buffer mode.
		@@ -214,7 +215,8 @@ public:
		transfer_type transferType = TRANSFER_DEFAULT,
		const audio_offload_info_t *offloadInfo = NULL,
		int uid = -1,
		pid_t pid = -1);
		pid_t pid = -1,
		const audio_attributes_t* pAttributes = NULL);

		/* Terminates the AudioTrack and unregisters it from AudioFlinger.
		* Also destroys all resources associated with the AudioTrack.
		@@ -254,7 +256,7 @@ public:
		const audio_offload_info_t *offloadInfo = NULL,
		int uid = -1,
		pid_t pid = -1,
		audio_attributes_t* pAttributes = NULL);
		const audio_attributes_t* pAttributes = NULL);

		/* Result of constructing the AudioTrack. This must be checked for successful initialization
		* before using any AudioTrack API (except for set()), because using

include/media/mediaplayer.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -160,6 +160,9 @@ enum media_parameter_keys {
		// Playback rate expressed in permille (1000 is normal speed), saved as int32_t, with negative
		// values used for rewinding or reverse playback.
		KEY_PARAMETER_PLAYBACK_RATE_PERMILLE = 1300, // set only

		// Set a Parcel containing the value of a parcelled Java AudioAttribute instance
		KEY_PARAMETER_AUDIO_ATTRIBUTES = 1400 // set only
		};

		// Keep INVOKE_ID_* in sync with MediaPlayer.java.
		@@ -169,7 +172,7 @@ enum media_player_invoke_ids {
		INVOKE_ID_ADD_EXTERNAL_SOURCE_FD = 3,
		INVOKE_ID_SELECT_TRACK = 4,
		INVOKE_ID_UNSELECT_TRACK = 5,
		INVOKE_ID_SET_VIDEO_SCALING_MODE = 6,
		INVOKE_ID_SET_VIDEO_SCALING_MODE = 6
		};

		// Keep MEDIA_TRACK_TYPE_* in sync with MediaPlayer.java.
		@@ -259,6 +262,7 @@ private:
		status_t attachNewPlayer(const sp<IMediaPlayer>& player);
		status_t reset_l();
		status_t doSetRetransmitEndpoint(const sp<IMediaPlayer>& player);
		status_t checkStateForKeySet_l(int key);

		sp<IMediaPlayer> mPlayer;
		thread_id_t mLockThreadId;

media/libmedia/AudioTrack.cpp

+7 −5

Original line number	Diff line number	Diff line
		@@ -124,7 +124,8 @@ AudioTrack::AudioTrack(
		transfer_type transferType,
		const audio_offload_info_t *offloadInfo,
		int uid,
		pid_t pid)
		pid_t pid,
		const audio_attributes_t* pAttributes)
		: mStatus(NO_INIT),
		mIsTimed(false),
		mPreviousPriority(ANDROID_PRIORITY_NORMAL),
		@@ -134,7 +135,7 @@ AudioTrack::AudioTrack(
		mStatus = set(streamType, sampleRate, format, channelMask,
		frameCount, flags, cbf, user, notificationFrames,
		0 /sharedBuffer/, false /threadCanCallJava/, sessionId, transferType,
		offloadInfo, uid, pid, NULL /no audio attributes/);
		offloadInfo, uid, pid, pAttributes);
		}

		AudioTrack::AudioTrack(
		@@ -151,7 +152,8 @@ AudioTrack::AudioTrack(
		transfer_type transferType,
		const audio_offload_info_t *offloadInfo,
		int uid,
		pid_t pid)
		pid_t pid,
		const audio_attributes_t* pAttributes)
		: mStatus(NO_INIT),
		mIsTimed(false),
		mPreviousPriority(ANDROID_PRIORITY_NORMAL),
		@@ -161,7 +163,7 @@ AudioTrack::AudioTrack(
		mStatus = set(streamType, sampleRate, format, channelMask,
		0 /frameCount/, flags, cbf, user, notificationFrames,
		sharedBuffer, false /threadCanCallJava/, sessionId, transferType, offloadInfo,
		uid, pid, NULL /no audio attributes/);
		uid, pid, pAttributes);
		}

		AudioTrack::~AudioTrack()
		@@ -205,7 +207,7 @@ status_t AudioTrack::set(
		const audio_offload_info_t *offloadInfo,
		int uid,
		pid_t pid,
		audio_attributes_t* pAttributes)
		const audio_attributes_t* pAttributes)
		{
		ALOGV("set(): streamType %d, sampleRate %u, format %#x, channelMask %#x, frameCount %zu, "
		"flags #%x, notificationFrames %u, sessionId %d, transferType %d",

media/libmedia/mediaplayer.cpp

+22 −0

Original line number	Diff line number	Diff line
		@@ -624,10 +624,32 @@ status_t MediaPlayer::attachAuxEffect(int effectId)
		return mPlayer->attachAuxEffect(effectId);
		}

		// always call with lock held
		status_t MediaPlayer::checkStateForKeySet_l(int key)
		{
		switch(key) {
		case KEY_PARAMETER_AUDIO_ATTRIBUTES:
		if (mCurrentState & ( MEDIA_PLAYER_PREPARED \| MEDIA_PLAYER_STARTED \|
		MEDIA_PLAYER_PAUSED \| MEDIA_PLAYER_PLAYBACK_COMPLETE) ) {
		// Can't change the audio attributes after prepare
		ALOGE("trying to set audio attributes called in state %d", mCurrentState);
		return INVALID_OPERATION;
		}
		break;
		default:
		// parameter doesn't require player state check
		break;
		}
		return OK;
		}

		status_t MediaPlayer::setParameter(int key, const Parcel& request)
		{
		ALOGV("MediaPlayer::setParameter(%d)", key);
		Mutex::Autolock _l(mLock);
		if (checkStateForKeySet_l(key) != OK) {
		return INVALID_OPERATION;
		}
		if (mPlayer != NULL) {
		return mPlayer->setParameter(key, request);
		}

media/libmediaplayerservice/MediaPlayerService.cpp

+101 −7

Original line number	Diff line number	Diff line
		@@ -186,6 +186,60 @@ bool findMetadata(const Metadata::Filter& filter, const int32_t val)
		} // anonymous namespace


		namespace {
		using android::Parcel;
		using android::String16;

		// marshalling tag indicating flattened utf16 tags
		// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
		const int32_t kAudioAttributesMarshallTagFlattenTags = 1;

		// Audio attributes format in a parcel:
		//
		// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
		// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		// \| usage \|
		// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		// \| content_type \|
		// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		// \| flags \|
		// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		// \| kAudioAttributesMarshallTagFlattenTags \| // ignore tags if not found
		// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		// \| flattened tags in UTF16 \|
		// \| ... \|
		// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		//
		// @param p Parcel that contains audio attributes.
		// @param[out] attributes On exit points to an initialized audio_attributes_t structure
		// @param[out] status On exit contains the status code to be returned.
		void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
		{
		attributes->usage = (audio_usage_t) parcel.readInt32();
		attributes->content_type = (audio_content_type_t) parcel.readInt32();
		attributes->flags = (audio_flags_mask_t) parcel.readInt32();
		const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
		if (hasFlattenedTag) {
		// the tags are UTF16, convert to UTF8
		String16 tags = parcel.readString16();
		ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
		if (realTagSize <= 0) {
		strcpy(attributes->tags, "");
		} else {
		// copy the flattened string into the attributes as the destination for the conversion:
		// copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
		size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
		AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
		utf16_to_utf8(tags.string(), tagSize, attributes->tags);
		}
		} else {
		ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
		strcpy(attributes->tags, "");
		}
		}
		} // anonymous namespace


		namespace android {

		static bool checkPermission(const char* permissionString) {
		@@ -508,6 +562,7 @@ MediaPlayerService::Client::Client(
		mAudioSessionId = audioSessionId;
		mUID = uid;
		mRetransmitEndpointValid = false;
		mAudioAttributes = NULL;

		#if CALLBACK_ANTAGONIZER
		ALOGD("create Antagonizer");
		@@ -522,6 +577,9 @@ MediaPlayerService::Client::~Client()
		wp<Client> client(this);
		disconnect();
		mService->removeClient(client);
		if (mAudioAttributes != NULL) {
		free(mAudioAttributes);
		}
		}

		void MediaPlayerService::Client::disconnect()
		@@ -587,7 +645,7 @@ sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(

		if (!p->hardwareOutput()) {
		mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
		mPid);
		mPid, mAudioAttributes);
		static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
		}

		@@ -968,6 +1026,22 @@ status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type
		return NO_ERROR;
		}

		status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
		{
		if (mAudioAttributes != NULL) { free(mAudioAttributes); }
		mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
		unmarshallAudioAttributes(parcel, mAudioAttributes);

		ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
		mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
		mAudioAttributes->tags);

		if (mAudioOutput != 0) {
		mAudioOutput->setAudioAttributes(mAudioAttributes);
		}
		return NO_ERROR;
		}

		status_t MediaPlayerService::Client::setLooping(int loop)
		{
		ALOGV("[%d] setLooping(%d)", mConnId, loop);
		@@ -1016,10 +1090,18 @@ status_t MediaPlayerService::Client::attachAuxEffect(int effectId)

		status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
		ALOGV("[%d] setParameter(%d)", mConnId, key);
		switch (key) {
		case KEY_PARAMETER_AUDIO_ATTRIBUTES:
		{
		Mutex::Autolock l(mLock);
		return setAudioAttributes_l(request);
		}
		default:
		sp<MediaPlayerBase> p = getPlayer();
		if (p == 0) return UNKNOWN_ERROR;
		if (p == 0) { return UNKNOWN_ERROR; }
		return p->setParameter(key, request);
		}
		}

		status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
		ALOGV("[%d] getParameter(%d)", mConnId, key);
		@@ -1300,7 +1382,8 @@ Exit:

		#undef LOG_TAG
		#define LOG_TAG "AudioSink"
		MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid)
		MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
		const audio_attributes_t* attr)
		: mCallback(NULL),
		mCallbackCookie(NULL),
		mCallbackData(NULL),
		@@ -1319,6 +1402,7 @@ MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid)
		mAuxEffectId = 0;
		mSendLevel = 0.0;
		setMinBufferCount();
		mAttributes = attr;
		}

		MediaPlayerService::AudioOutput::~AudioOutput()
		@@ -1408,6 +1492,10 @@ String8 MediaPlayerService::AudioOutput::getParameters(const String8& keys)
		return mTrack->getParameters(keys);
		}

		void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
		mAttributes = attributes;
		}

		void MediaPlayerService::AudioOutput::deleteRecycledTrack()
		{
		ALOGV("deleteRecycledTrack");
		@@ -1557,7 +1645,8 @@ status_t MediaPlayerService::AudioOutput::open(
		AudioTrack::TRANSFER_CALLBACK,
		offloadInfo,
		mUid,
		mPid);
		mPid,
		mAttributes);
		} else {
		t = new AudioTrack(
		mStreamType,
		@@ -1573,13 +1662,18 @@ status_t MediaPlayerService::AudioOutput::open(
		AudioTrack::TRANSFER_DEFAULT,
		NULL, // offload info
		mUid,
		mPid);
		mPid,
		mAttributes);
		}

		if ((t == 0) \|\| (t->initCheck() != NO_ERROR)) {
		ALOGE("Unable to create audio track");
		delete newcbd;
		return NO_INIT;
		} else {
		// successful AudioTrack initialization implies a legacy stream type was generated
		// from the audio attributes
		mStreamType = t->streamType();
		}
		}