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Adds WebRtcAudioTrack.setAudioTrackUsageAttribute API

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TBR=
BUG=b/62058118

Review-Url: https://codereview.webrtc.org/2979423002
Cr-Commit-Position: refs/heads/master@{#19109}
This commit is contained in:
henrika 2017-07-21 06:16:02 -07:00 committed by Commit Bot
parent e29117edbb
commit cfccdae57e
1 changed files with 18 additions and 1 deletions
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19
webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioTrack.java
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@ -42,6 +42,20 @@ public class WebRtcAudioTrack {
// but the wait times out afther this amount of time.
private static final long AUDIO_TRACK_THREAD_JOIN_TIMEOUT_MS = 2000;
// By default, WebRTC creates audio tracks with a usage attribute
// corresponding to voice communications, such as telephony or VoIP.
private static final int DEFAULT_USAGE = AudioAttributes.USAGE_VOICE_COMMUNICATION;
private static int usageAttribute = DEFAULT_USAGE;
// This method overrides the default usage attribute and allows the user
// to set it to something else than AudioAttributes.USAGE_VOICE_COMMUNICATION.
// NOTE: calling this method will most likely break existing VoIP tuning.
public static synchronized void setAudioTrackUsageAttribute(int usage) {
Logging.w(TAG, "Default usage attribute is changed from: "
+ DEFAULT_USAGE + " to " + usage);
usageAttribute = usage;
}
private final long nativeAudioTrack;
private final AudioManager audioManager;
@ -332,10 +346,13 @@ public class WebRtcAudioTrack {
if (sampleRateInHz != nativeOutputSampleRate) {
Logging.w(TAG, "Unable to use fast mode since requested sample rate is not native");
}
if (usageAttribute != DEFAULT_USAGE) {
Logging.w(TAG, "A non default usage attribute is used: " + usageAttribute);
}
// Create an audio track where the audio usage is for VoIP and the content type is speech.
return new AudioTrack(
new AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_VOICE_COMMUNICATION)
.setUsage(usageAttribute)
.setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
.build(),
new AudioFormat.Builder()