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Speak the usual way during calls rather than through low-latency audio #190

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Merged
trypsynth merged 1 commit into from
Oct 15, 2026
Merged

Speak the usual way during calls rather than through low-latency audio #190

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13 changes: 12 additions & 1 deletion utils/src/main/java/com/google/android/accessibility/utils/output/FailoverTextToSpeech.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1366,11 +1366,11 @@ private int speakInChunks(
*/
private int ttsSpeak(
CharSequence text, int queueMode, Bundle bundle, @Nullable String utteranceId) {
watchForEngineHang(queueMode, utteranceId);
@Nullable LowLatencyAudio player = lowLatencyPlayer();
if (player == null || utteranceId == null || TextUtils.isEmpty(text)) {
return tts.speak(text, queueMode, bundle, utteranceId);
}
watchForEngineHang(queueMode, utteranceId);
if (queueMode != QUEUE_ADD) {
// The engine flushes its own queue for this queue mode. Every player, since the player for
// speech changes with the speech volume setting.
Expand Down Expand Up @@ -1399,10 +1399,21 @@ private int ttsSpeak(
return result;
}

/** Whether a phone or voice call has the audio mode. */
private boolean inCall() {
AudioManager audioManager = context.getSystemService(AudioManager.class);
if (audioManager == null) {
return false;
}
int mode = audioManager.getMode();
return mode == AudioManager.MODE_IN_CALL || mode == AudioManager.MODE_IN_COMMUNICATION;
}

/** The player for speech, or null if speech should play the usual way. */
private @Nullable LowLatencyAudio lowLatencyPlayer() {
if (!lowLatencyAudio
|| LowLatencyAudio.isMicrophoneInUse()
|| inCall()
|| android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.R
|| (ttsEngine != null && enginesWithoutFileAudio.contains(ttsEngine))) {
return null;
Expand Down
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