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Merge pull request #63 from google/dev
Update dev-l
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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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| @@ -0,0 +1,108 @@ | ||
| /* | ||
| * 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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|
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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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