Only send master volume or mute updates if the settings have changed (a477bab9) · Commits · e / os / android_frameworks_base

media/java/android/media/AudioService.java

+12 −6

Original line number	Diff line number	Diff line
		@@ -733,9 +733,11 @@ public class AudioService extends IAudioService.Stub {

		/** @see AudioManager#setMasterMute(boolean, IBinder) */
		public void setMasterMute(boolean state, IBinder cb) {
		if (state != AudioSystem.getMasterMute()) {
		AudioSystem.setMasterMute(state);
		sendMasterMuteUpdate(state, AudioManager.FLAG_SHOW_UI);
		}
		}

		/** get master mute state. */
		public boolean isMasterMute() {
		@@ -762,10 +764,14 @@ public class AudioService extends IAudioService.Stub {
		if (!AudioSystem.getMasterMute()) {
		int oldVolume = getMasterVolume();
		AudioSystem.setMasterVolume(volume);

		int newVolume = getMasterVolume();
		if (newVolume != oldVolume) {
		// Post a persist master volume msg
		sendMsg(mAudioHandler, MSG_PERSIST_MASTER_VOLUME, 0, SENDMSG_REPLACE,
		Math.round(volume * (float)1000.0), 0, null, PERSIST_DELAY);
		sendMasterVolumeUpdate(flags, oldVolume, getMasterVolume());
		sendMasterVolumeUpdate(flags, oldVolume, newVolume);
		}
		}
		}