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/*
* Copyright (C) 2010 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.
*/
#ifndef MATROSKA_EXTRACTOR_H_
#define MATROSKA_EXTRACTOR_H_
#include "mkvparser.hpp"
#include <media/stagefright/MediaExtractor.h>
#include <utils/Vector.h>
#include <utils/threads.h>
namespace android {
struct AMessage;
class String8;
struct DataSourceReader;
struct MatroskaSource;
struct MatroskaExtractor : public MediaExtractor {
MatroskaExtractor(const sp<DataSource> &source);
virtual size_t countTracks();
virtual sp<MediaSource> getTrack(size_t index);
virtual sp<MetaData> getTrackMetaData(
size_t index, uint32_t flags);
virtual sp<MetaData> getMetaData();
virtual uint32_t flags() const;
protected:
virtual ~MatroskaExtractor();
private:
friend struct MatroskaSource;
friend struct BlockIterator;
struct TrackInfo {
unsigned long mTrackNum;
sp<MetaData> mMeta;
const MatroskaExtractor *mExtractor;
Vector<const mkvparser::CuePoint*> mCuePoints;
const mkvparser::Track* getTrack() const;
const mkvparser::CuePoint::TrackPosition *find(long long timeNs) const;
};
Mutex mLock;
Vector<TrackInfo> mTracks;
sp<DataSource> mDataSource;
DataSourceReader *mReader;
mkvparser::Segment *mSegment;
bool mExtractedThumbnails;
bool mIsLiveStreaming;
bool mIsWebm;
int64_t mSeekPreRollNs;
void addTracks();
void findThumbnails();
bool isLiveStreaming() const;
MatroskaExtractor(const MatroskaExtractor &);
MatroskaExtractor &operator=(const MatroskaExtractor &);
};
bool SniffMatroska(
const sp<DataSource> &source, String8 *mimeType, float *confidence,
sp<AMessage> *);
} // namespace android
#endif // MATROSKA_EXTRACTOR_H_
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