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/*
* Copyright (C) 2017 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 org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk;
import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DummyTrackOutput;
import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput;
import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue;
import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.ChunkExtractorWrapper.TrackOutputProvider;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log;
/**
* A {@link TrackOutputProvider} that provides {@link TrackOutput TrackOutputs} based on a
* predefined mapping from track type to output.
*/
public final class BaseMediaChunkOutput implements TrackOutputProvider {
private static final String TAG = "BaseMediaChunkOutput";
private final int[] trackTypes;
private final SampleQueue[] sampleQueues;
/**
* @param trackTypes The track types of the individual track outputs.
* @param sampleQueues The individual sample queues.
*/
public BaseMediaChunkOutput(int[] trackTypes, SampleQueue[] sampleQueues) {
this.trackTypes = trackTypes;
this.sampleQueues = sampleQueues;
}
@Override
public TrackOutput track(int id, int type) {
for (int i = 0; i < trackTypes.length; i++) {
if (type == trackTypes[i]) {
return sampleQueues[i];
}
}
Log.e(TAG, "Unmatched track of type: " + type);
return new DummyTrackOutput();
}
/**
* Returns the current absolute write indices of the individual sample queues.
*/
public int[] getWriteIndices() {
int[] writeIndices = new int[sampleQueues.length];
for (int i = 0; i < sampleQueues.length; i++) {
if (sampleQueues[i] != null) {
writeIndices[i] = sampleQueues[i].getWriteIndex();
}
}
return writeIndices;
}
/**
* Sets an offset that will be added to the timestamps (and sub-sample timestamps) of samples
* subsequently written to the sample queues.
*/
public void setSampleOffsetUs(long sampleOffsetUs) {
for (SampleQueue sampleQueue : sampleQueues) {
if (sampleQueue != null) {
sampleQueue.setSampleOffsetUs(sampleOffsetUs);
}
}
}
}
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