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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tv.tuner.exoplayer.audio;
import android.os.Handler;
import com.google.android.exoplayer.ExoPlaybackException;
import com.google.android.exoplayer.MediaCodecAudioTrackRenderer;
import com.google.android.exoplayer.MediaCodecSelector;
import com.google.android.exoplayer.SampleSource;
/**
* MPEG-2 TS audio track renderer.
*
* <p>Since the audio output from {@link android.media.MediaExtractor} contains extra samples at the
* beginning, using original {@link MediaCodecAudioTrackRenderer} as audio renderer causes
* asynchronous Audio/Video outputs. This class calculates the offset of audio data and adjust the
* presentation times to avoid the asynchronous Audio/Video problem.
*/
public class MpegTsMediaCodecAudioTrackRenderer extends MediaCodecAudioTrackRenderer {
private final Ac3EventListener mListener;
public interface Ac3EventListener extends EventListener {
/**
* Invoked when a {@link android.media.PlaybackParams} set to an {@link
* android.media.AudioTrack} is not valid.
*
* @param e The corresponding exception.
*/
void onAudioTrackSetPlaybackParamsError(IllegalArgumentException e);
}
public MpegTsMediaCodecAudioTrackRenderer(
SampleSource source,
MediaCodecSelector mediaCodecSelector,
Handler eventHandler,
EventListener eventListener) {
super(source, mediaCodecSelector, eventHandler, eventListener);
mListener = (Ac3EventListener) eventListener;
}
@Override
public void handleMessage(int messageType, Object message) throws ExoPlaybackException {
if (messageType == MSG_SET_PLAYBACK_PARAMS) {
try {
super.handleMessage(messageType, message);
} catch (IllegalArgumentException e) {
if (isAudioTrackSetPlaybackParamsError(e)) {
notifyAudioTrackSetPlaybackParamsError(e);
}
}
return;
}
super.handleMessage(messageType, message);
}
private void notifyAudioTrackSetPlaybackParamsError(final IllegalArgumentException e) {
if (eventHandler != null && mListener != null) {
eventHandler.post(
new Runnable() {
@Override
public void run() {
mListener.onAudioTrackSetPlaybackParamsError(e);
}
});
}
}
private static boolean isAudioTrackSetPlaybackParamsError(IllegalArgumentException e) {
if (e.getStackTrace() == null || e.getStackTrace().length < 1) {
return false;
}
for (StackTraceElement element : e.getStackTrace()) {
String elementString = element.toString();
if (elementString.startsWith("android.media.AudioTrack.setPlaybackParams")) {
return true;
}
}
return false;
}
}
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