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Merge pull request #62 from google/dev
Update dev-hls
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108 changes: 108 additions & 0 deletions
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library/src/main/java/com/google/android/exoplayer/chunk/SingleSampleChunkSource.java
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/* | ||
* Copyright (C) 2014 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.google.android.exoplayer.chunk; | ||
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import com.google.android.exoplayer.MediaFormat; | ||
import com.google.android.exoplayer.TrackInfo; | ||
import com.google.android.exoplayer.upstream.DataSource; | ||
import com.google.android.exoplayer.upstream.DataSpec; | ||
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import java.io.IOException; | ||
import java.util.List; | ||
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/** | ||
* A chunk source that provides a single chunk containing a single sample. | ||
* <p> | ||
* An example use case for this implementation is to act as the source for loading out-of-band | ||
* subtitles, where subtitles for the entire video are delivered as a single file. | ||
*/ | ||
public class SingleSampleChunkSource implements ChunkSource { | ||
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private final DataSource dataSource; | ||
private final DataSpec dataSpec; | ||
private final Format format; | ||
private final long durationUs; | ||
private final MediaFormat mediaFormat; | ||
private final TrackInfo trackInfo; | ||
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/** | ||
* @param dataSource A {@link DataSource} suitable for loading the sample data. | ||
* @param dataSpec Defines the location of the sample. | ||
* @param format The format of the sample. | ||
* @param durationUs The duration of the sample in microseconds. | ||
* @param mediaFormat The sample media format. May be null. | ||
*/ | ||
public SingleSampleChunkSource(DataSource dataSource, DataSpec dataSpec, Format format, | ||
long durationUs, MediaFormat mediaFormat) { | ||
this.dataSource = dataSource; | ||
this.dataSpec = dataSpec; | ||
this.format = format; | ||
this.durationUs = durationUs; | ||
this.mediaFormat = mediaFormat; | ||
trackInfo = new TrackInfo(format.mimeType, durationUs); | ||
} | ||
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@Override | ||
public TrackInfo getTrackInfo() { | ||
return trackInfo; | ||
} | ||
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@Override | ||
public void getMaxVideoDimensions(MediaFormat out) { | ||
// Do nothing. | ||
} | ||
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@Override | ||
public void enable() { | ||
// Do nothing. | ||
} | ||
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@Override | ||
public void continueBuffering(long playbackPositionUs) { | ||
// Do nothing. | ||
} | ||
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@Override | ||
public void getChunkOperation(List<? extends MediaChunk> queue, long seekPositionUs, | ||
long playbackPositionUs, ChunkOperationHolder out) { | ||
if (!queue.isEmpty()) { | ||
// We've already provided the single sample. | ||
return; | ||
} | ||
out.chunk = initChunk(); | ||
} | ||
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@Override | ||
public void disable(List<? extends MediaChunk> queue) { | ||
// Do nothing. | ||
} | ||
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@Override | ||
public IOException getError() { | ||
return null; | ||
} | ||
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@Override | ||
public void onChunkLoadError(Chunk chunk, Exception e) { | ||
// Do nothing. | ||
} | ||
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private SingleSampleMediaChunk initChunk() { | ||
return new SingleSampleMediaChunk(dataSource, dataSpec, format, 0, 0, durationUs, -1, | ||
mediaFormat); | ||
} | ||
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} |
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