Merge "Write volume to Hearing Aid during connection setup" (249e50e4) · Commits · e / os / android_packages_modules_Bluetooth

system/bta/hearing_aid/hearing_aid.cc

+26 −3

Original line number	Diff line number	Diff line
		@@ -55,6 +55,10 @@ constexpr uint8_t CAPABILITY_RESERVED = 0xFC;
		constexpr uint8_t CONTROL_POINT_OP_START = 0x01;
		constexpr uint8_t CONTROL_POINT_OP_STOP = 0x02;

		// used to mark current_volume as not yet known, or possibly old
		constexpr int8_t VOLUME_UNKNOWN = 127;
		constexpr int8_t VOLUME_MIN = -127;

		namespace {

		// clang-format off
		@@ -225,7 +229,10 @@ class HearingAidImpl : public HearingAid {

		HearingAidImpl(bluetooth::hearing_aid::HearingAidCallbacks* callbacks,
		Closure initCb)
		: gatt_if(0), seq_counter(0), callbacks(callbacks) {
		: gatt_if(0),
		seq_counter(0),
		current_volume(VOLUME_UNKNOWN),
		callbacks(callbacks) {
		DVLOG(2) << __func__;
		BTA_GATTC_AppRegister(
		hearingaid_gattc_callback,
		@@ -696,12 +703,24 @@ class HearingAidImpl : public HearingAid {
		}

		void SendStart(const HearingDevice& device) {
		std::vector<uint8_t> start(
		{CONTROL_POINT_OP_START, codec_in_use, 0x02 /* media */});
		std::vector<uint8_t> start({CONTROL_POINT_OP_START, codec_in_use,
		0x02 /* media */, (uint8_t)current_volume});

		if (current_volume == VOLUME_UNKNOWN) start[3] = (uint8_t)VOLUME_MIN;

		BtaGattQueue::WriteCharacteristic(device.conn_id,
		device.audio_control_point_handle, start,
		GATT_WRITE, nullptr, nullptr);

		// TODO(jpawlowski): this will be removed, once test devices get volume
		// from start reqest
		if (current_volume != VOLUME_UNKNOWN) {
		std::vector<uint8_t> volume_value(
		{static_cast<unsigned char>(current_volume)});
		BtaGattQueue::WriteCharacteristic(device.conn_id, device.volume_handle,
		volume_value, GATT_WRITE_NO_RSP,
		nullptr, nullptr);
		}
		}

		void OnAudioDataReady(const std::vector<uint8_t>& data) {
		@@ -744,6 +763,7 @@ class HearingAidImpl : public HearingAid {

		if (left == nullptr && right == nullptr) {
		HearingAidAudioSource::Stop();
		current_volume = VOLUME_UNKNOWN;
		return;
		}

		@@ -970,6 +990,7 @@ class HearingAidImpl : public HearingAid {

		void SetVolume(int8_t volume) override {
		VLOG(2) << __func__ << ": " << +volume;
		current_volume = volume;
		for (HearingDevice& device : hearingDevices.devices) {
		if (!device.accepting_audio) continue;

		@@ -996,6 +1017,8 @@ class HearingAidImpl : public HearingAid {
		private:
		uint8_t gatt_if;
		uint8_t seq_counter;
		/* current volume gain for the hearing aids*/
		int8_t current_volume;
		bluetooth::hearing_aid::HearingAidCallbacks* callbacks;

		/* currently used codec */