Decrease the stream volume and Increase TTS volume at the same time
I had this Android application that talk with TTS every time and uses streaming music (spotify). So, I need to decrease the volume and increase the TTS
I use this code but this decrease the tts as well.
AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,[int value],[if desired a flag]);
Any way to decrease only spotify like stream music .
in Java/android.
What you want to do is know as 'audio ducking'
Here's some sample code:
/**
* Our {@link AudioManager.OnAudioFocusChangeListener}
*/
private static AudioManager.OnAudioFocusChangeListener audioFocus = new AudioManager.OnAudioFocusChangeListener() {
@Override
public void onAudioFocusChange(final int focusChange) {
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager focusChange: " + focusChange);
}
switch (focusChange) {
case AudioManager.AUDIOFOCUS_GAIN:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager focusChange: AUDIOFOCUS_GAIN");
}
break;
case AudioManager.AUDIOFOCUS_LOSS:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager focusChange: AUDIOFOCUS_LOSS");
}
break;
case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager focusChange: AUDIOFOCUS_LOSS_TRANSIENT");
}
break;
case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager focusChange: AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK");
}
break;
default:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager focusChange: AUDIOFOCUS default");
}
break;
}
}
};
/**
* Duck the audio
*
* @param ctx the application context
*/
public static void duckAudioMedia(final Context ctx) {
if (DEBUG) {
MyLog.i(CLS_NAME, "duckAudioMedia");
}
try {
final AudioManager audioManager = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
switch (audioManager.requestAudioFocus(audioFocus, AudioManager.STREAM_MUSIC,
AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK)) {
case AudioManager.AUDIOFOCUS_REQUEST_FAILED:
if (DEBUG) {
MyLog.w(CLS_NAME, "AudioManager duckAudioMedia AUDIOFOCUS_REQUEST_FAILED");
}
break;
case AudioManager.AUDIOFOCUS_REQUEST_GRANTED:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager duckAudioMedia AUDIOFOCUS_REQUEST_GRANTED");
}
break;
default:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager duckAudioMedia AUDIOFOCUS default");
}
break;
}
} catch (final NullPointerException e) {
if (DEBUG) {
MyLog.w(CLS_NAME, "duckAudioMedia: NullPointerException");
e.printStackTrace();
}
} catch (final Exception e) {
if (DEBUG) {
MyLog.w(CLS_NAME, "duckAudioMedia: Exception");
e.printStackTrace();
}
}
}
/**
* Notify the System that any previous condition requiring to duck or pause audio is now complete.
*
* @param ctx the application context
*/
public static void abandonAudioMedia(final Context ctx) {
if (DEBUG) {
MyLog.i(CLS_NAME, "abandonAudioMedia");
}
try {
final AudioManager audioManager = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
switch (audioManager.abandonAudioFocus(audioFocus)) {
case AudioManager.AUDIOFOCUS_REQUEST_FAILED:
if (DEBUG) {
MyLog.w(CLS_NAME, "AudioManager abandonAudioMedia AUDIOFOCUS_REQUEST_FAILED");
}
break;
case AudioManager.AUDIOFOCUS_REQUEST_GRANTED:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager abandonAudioMedia AUDIOFOCUS_REQUEST_GRANTED");
}
break;
default:
if (DEBUG) {
MyLog.i(CLS_NAME, "AudioManager abandonAudioMedia AUDIOFOCUS default");
}
break;
}
} catch (final NullPointerException e) {
if (DEBUG) {
MyLog.w(CLS_NAME, "abandonAudioMedia: NullPointerException");
e.printStackTrace();
}
} catch (final Exception e) {
if (DEBUG) {
MyLog.w(CLS_NAME, "abandonAudioMedia: Exception");
e.printStackTrace();
}
}
}
You'll have to delete my custom logging.
Call duckAudioMedia as the TTS starts and abandonAudioMedia when the utterance is complete.
