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Code Issues Packages Projects Releases Wiki Activity

Request audio focus for announcements to duck other media

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This commit is contained in:
jannis 2020-01-08 13:19:20 +01:00
parent 832f6441cb
commit 9089689ce3
1 changed files with 25 additions and 0 deletions
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25
app/src/main/java/de/tadris/fitness/announcement/VoiceAnnouncements.java
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@ -20,7 +20,9 @@
package de.tadris.fitness.announcement;
import android.content.Context;
import android.media.AudioManager;
import android.speech.tts.TextToSpeech;
import android.speech.tts.UtteranceProgressListener;
import android.util.Log;
import java.util.Locale;
@ -43,6 +45,8 @@ public class VoiceAnnouncements {
private final long intervalTime;
private final int intervalInMeters;
private final AudioManager audioManager;
public VoiceAnnouncements(Context context, VoiceAnnouncementCallback callback) {
this.callback = callback;
UserPreferences prefs = Instance.getInstance(context).userPreferences;
@ -52,10 +56,14 @@ public class VoiceAnnouncements {
this.intervalInMeters = (int) (1000.0 / UnitUtils.CHOSEN_SYSTEM.getDistanceFromKilometers(1) * prefs.getSpokenUpdateDistancePeriod());
this.manager = new AnnouncementManager(context);
this.audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
}
private void ttsReady(int status) {
ttsAvailable = status == TextToSpeech.SUCCESS && textToSpeech.setLanguage(Locale.getDefault()) >= 0;
if (ttsAvailable) {
textToSpeech.setOnUtteranceProgressListener(new TextToSpeechListener());
}
callback.onVoiceAnnouncementIsReady(ttsAvailable);
}
@ -111,6 +119,23 @@ public class VoiceAnnouncements {
textToSpeech.shutdown();
}
private class TextToSpeechListener extends UtteranceProgressListener {
@Override
public void onStart(String utteranceId) {
audioManager.requestAudioFocus(null, AudioManager.STREAM_SYSTEM, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK);
}
@Override
public void onDone(String utteranceId) {
audioManager.abandonAudioFocus(null);
}
@Override
public void onError(String utteranceId) {
}
}
public interface VoiceAnnouncementCallback {
void onVoiceAnnouncementIsReady(boolean available);
}