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Diffstat (limited to 'src/com/android/tv/tuner/exoplayer/ac3/Ac3MediaCodecTrackRenderer.java')
-rw-r--r-- | src/com/android/tv/tuner/exoplayer/ac3/Ac3MediaCodecTrackRenderer.java | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/com/android/tv/tuner/exoplayer/ac3/Ac3MediaCodecTrackRenderer.java b/src/com/android/tv/tuner/exoplayer/ac3/Ac3MediaCodecTrackRenderer.java new file mode 100644 index 00000000..604959d1 --- /dev/null +++ b/src/com/android/tv/tuner/exoplayer/ac3/Ac3MediaCodecTrackRenderer.java @@ -0,0 +1,97 @@ +/* + * 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.ac3; + +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 Ac3MediaCodecTrackRenderer extends MediaCodecAudioTrackRenderer { + private final String TAG = "Ac3MediaCodecTrackRenderer"; + private final boolean DEBUG = false; + + 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 Ac3MediaCodecTrackRenderer( + 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); + } + }); + } + } + + static private 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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