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/*
* Copyright 2012, 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 NU_MEDIA_EXTRACTOR_H_
#define NU_MEDIA_EXTRACTOR_H_
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/MediaSource.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/RefBase.h>
#include <utils/String8.h>
#include <utils/threads.h>
#include <utils/Vector.h>
namespace android {
struct ABuffer;
struct AMessage;
struct DataSource;
struct MediaBuffer;
struct MediaExtractor;
struct MediaSource;
struct MetaData;
struct NuMediaExtractor : public RefBase {
enum SampleFlags {
SAMPLE_FLAG_SYNC = 1,
SAMPLE_FLAG_ENCRYPTED = 2,
};
NuMediaExtractor();
status_t setDataSource(
const char *path,
const KeyedVector<String8, String8> *headers = NULL);
status_t setDataSource(int fd, off64_t offset, off64_t size);
status_t setDataSource(const sp<DataSource> &datasource);
size_t countTracks() const;
status_t getTrackFormat(size_t index, sp<AMessage> *format) const;
status_t selectTrack(size_t index);
status_t unselectTrack(size_t index);
status_t seekTo(
int64_t timeUs,
MediaSource::ReadOptions::SeekMode mode =
MediaSource::ReadOptions::SEEK_CLOSEST_SYNC);
status_t advance();
status_t readSampleData(const sp<ABuffer> &buffer);
status_t getSampleTrackIndex(size_t *trackIndex);
status_t getSampleTime(int64_t *sampleTimeUs);
status_t getSampleMeta(sp<MetaData> *sampleMeta);
bool getCachedDuration(int64_t *durationUs, bool *eos) const;
protected:
virtual ~NuMediaExtractor();
private:
enum TrackFlags {
kIsVorbis = 1,
};
struct TrackInfo {
sp<MediaSource> mSource;
size_t mTrackIndex;
status_t mFinalResult;
MediaBuffer *mSample;
int64_t mSampleTimeUs;
uint32_t mTrackFlags; // bitmask of "TrackFlags"
};
mutable Mutex mLock;
sp<DataSource> mDataSource;
sp<MediaExtractor> mImpl;
bool mIsWidevineExtractor;
Vector<TrackInfo> mSelectedTracks;
int64_t mTotalBitrate; // in bits/sec
int64_t mDurationUs;
ssize_t fetchTrackSamples(
int64_t seekTimeUs = -1ll,
MediaSource::ReadOptions::SeekMode mode =
MediaSource::ReadOptions::SEEK_CLOSEST_SYNC);
void releaseTrackSamples();
bool getTotalBitrate(int64_t *bitRate) const;
void updateDurationAndBitrate();
DISALLOW_EVIL_CONSTRUCTORS(NuMediaExtractor);
};
} // namespace android
#endif // NU_MEDIA_EXTRACTOR_H_
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