Merge "Explicitly mute the audio output while switching the A2DP Active Device" am: 4f501148ff (c7df470f) · Commits · e / os / android_packages_modules_Bluetooth

android/app/src/com/android/bluetooth/a2dp/A2dpService.java

+11 −0

Original line number	Diff line number	Diff line
		@@ -507,7 +507,14 @@ public class A2dpService extends ProfileService {
		}
		// Make sure the Audio Manager knows the previous Active device is disconnected,
		// and the new Active device is connected.
		// Also, mute and unmute the output during the switch to avoid audio glitches.
		boolean wasMuted = false;
		if (previousActiveDevice != null) {
		if (!mAudioManager.isStreamMute(AudioManager.STREAM_MUSIC)) {
		mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,
		AudioManager.ADJUST_MUTE, 0);
		wasMuted = true;
		}
		mAudioManager.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
		previousActiveDevice, BluetoothProfile.STATE_DISCONNECTED,
		BluetoothProfile.A2DP, true, -1);
		@@ -529,6 +536,10 @@ public class A2dpService extends ProfileService {
		// change, so the Audio Service can reset accordingly the audio
		// feeding parameters in the Audio HAL to the Bluetooth stack.
		mAudioManager.handleBluetoothA2dpDeviceConfigChange(mActiveDevice);
		if (wasMuted) {
		mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,
		AudioManager.ADJUST_UNMUTE, 0);
		}
		}
		}
		return true;