Add master audio balance (3fae037d) · Commits · e / os / android_frameworks_av

media/libaudioclient/AudioSystem.cpp

+14 −0

Original line number	Diff line number	Diff line
		@@ -1281,6 +1281,20 @@ status_t AudioSystem::getMasterMono(bool *mono)
		return aps->getMasterMono(mono);
		}

		status_t AudioSystem::setMasterBalance(float balance)
		{
		const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
		if (af == 0) return PERMISSION_DENIED;
		return af->setMasterBalance(balance);
		}

		status_t AudioSystem::getMasterBalance(float *balance)
		{
		const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
		if (af == 0) return PERMISSION_DENIED;
		return af->getMasterBalance(balance);
		}

		float AudioSystem::getStreamVolumeDB(audio_stream_type_t stream, int index, audio_devices_t device)
		{
		const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();

media/libaudioclient/IAudioFlinger.cpp

+45 −0

Original line number	Diff line number	Diff line
		@@ -87,6 +87,8 @@ enum {
		SYSTEM_READY,
		FRAME_COUNT_HAL,
		GET_MICROPHONES,
		SET_MASTER_BALANCE,
		GET_MASTER_BALANCE,
		};

		#define MAX_ITEMS_PER_LIST 1024
		@@ -242,6 +244,34 @@ public:
		return reply.readInt32();
		}

		status_t setMasterBalance(float balance) override
		{
		Parcel data, reply;
		data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
		data.writeFloat(balance);
		status_t status = remote()->transact(SET_MASTER_BALANCE, data, &reply);
		if (status != NO_ERROR) {
		return status;
		}
		return reply.readInt32();
		}

		status_t getMasterBalance(float *balance) const override
		{
		Parcel data, reply;
		data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
		status_t status = remote()->transact(GET_MASTER_BALANCE, data, &reply);
		if (status != NO_ERROR) {
		return status;
		}
		status = (status_t)reply.readInt32();
		if (status != NO_ERROR) {
		return status;
		}
		*balance = reply.readFloat();
		return NO_ERROR;
		}

		virtual status_t setStreamVolume(audio_stream_type_t stream, float value,
		audio_io_handle_t output)
		{
		@@ -1050,6 +1080,21 @@ status_t BnAudioFlinger::onTransact(
		reply->writeInt32( masterMute() );
		return NO_ERROR;
		} break;
		case SET_MASTER_BALANCE: {
		CHECK_INTERFACE(IAudioFlinger, data, reply);
		reply->writeInt32( setMasterBalance(data.readFloat()) );
		return NO_ERROR;
		} break;
		case GET_MASTER_BALANCE: {
		CHECK_INTERFACE(IAudioFlinger, data, reply);
		float f;
		const status_t status = getMasterBalance(&f);
		reply->writeInt32((int32_t)status);
		if (status == NO_ERROR) {
		(void)reply->writeFloat(f);
		}
		return NO_ERROR;
		} break;
		case SET_STREAM_VOLUME: {
		CHECK_INTERFACE(IAudioFlinger, data, reply);
		int stream = data.readInt32();

media/libaudioclient/include/media/AudioSystem.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -339,6 +339,9 @@ public:
		static status_t setMasterMono(bool mono);
		static status_t getMasterMono(bool *mono);

		static status_t setMasterBalance(float balance);
		static status_t getMasterBalance(float *balance);

		static float getStreamVolumeDB(
		audio_stream_type_t stream, int index, audio_devices_t device);

media/libaudioclient/include/media/IAudioFlinger.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -359,6 +359,9 @@ public:
		virtual float masterVolume() const = 0;
		virtual bool masterMute() const = 0;

		virtual status_t setMasterBalance(float balance) = 0;
		virtual status_t getMasterBalance(float *balance) const = 0;

		/* set/get stream type state. This will probably be used by
		* the preference panel, mostly.
		*/

services/audioflinger/AudioFlinger.cpp

+46 −0

Original line number	Diff line number	Diff line
		@@ -897,6 +897,40 @@ status_t AudioFlinger::setMasterVolume(float value)
		return NO_ERROR;
		}

		status_t AudioFlinger::setMasterBalance(float balance)
		{
		status_t ret = initCheck();
		if (ret != NO_ERROR) {
		return ret;
		}

		// check calling permissions
		if (!settingsAllowed()) {
		return PERMISSION_DENIED;
		}

		// check range
		if (isnan(balance) \|\| fabs(balance) > 1.f) {
		return BAD_VALUE;
		}

		Mutex::Autolock _l(mLock);

		// short cut.
		if (mMasterBalance == balance) return NO_ERROR;

		mMasterBalance = balance;

		for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
		if (mPlaybackThreads.valueAt(i)->isDuplicating()) {
		continue;
		}
		mPlaybackThreads.valueAt(i)->setMasterBalance(balance);
		}

		return NO_ERROR;
		}

		status_t AudioFlinger::setMode(audio_mode_t mode)
		{
		status_t ret = initCheck();
		@@ -1036,6 +1070,13 @@ float AudioFlinger::masterVolume() const
		return masterVolume_l();
		}

		status_t AudioFlinger::getMasterBalance(float *balance) const
		{
		Mutex::Autolock _l(mLock);
		*balance = getMasterBalance_l();
		return NO_ERROR; // if called through binder, may return a transactional error
		}

		bool AudioFlinger::masterMute() const
		{
		Mutex::Autolock _l(mLock);
		@@ -1047,6 +1088,11 @@ float AudioFlinger::masterVolume_l() const
		return mMasterVolume;
		}

		float AudioFlinger::getMasterBalance_l() const
		{
		return mMasterBalance;
		}

		bool AudioFlinger::masterMute_l() const
		{
		return mMasterMute;