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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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/MediaExtractor.h>
#include <media/stagefright/MediaSource.h>
#include <utils/threads.h>
#include <utils/KeyedVector.h>
#include <utils/Vector.h>
#include "mpeg2ts/ATSParser.h"
namespace android {
struct AMessage;
struct AnotherPacketSource;
struct ATSParser;
class DataSource;
struct MPEG2TSSource;
class String8;
struct MPEG2TSExtractor : public MediaExtractor {
explicit MPEG2TSExtractor(const sp<DataSource> &source);
virtual size_t countTracks();
virtual sp<IMediaSource> getTrack(size_t index);
virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags);
virtual sp<MetaData> getMetaData();
virtual status_t setMediaCas(const sp<ICas> &cas) override;
virtual uint32_t flags() const;
virtual const char * name() { return "MPEG2TSExtractor"; }
friend struct MPEG2TSSource;
mutable Mutex mLock;
sp<DataSource> mDataSource;
sp<ATSParser> mParser;
// Used to remember SyncEvent occurred in feedMore() when called from init(),
// because init() needs to update |mSourceImpls| before adding SyncPoint.
ATSParser::SyncEvent mLastSyncEvent;
Vector<sp<AnotherPacketSource> > mSourceImpls;
Vector<KeyedVector<int64_t, off64_t> > mSyncPoints;
// Sync points used for seeking --- normally one for video track is used.
// If no video track is present, audio track will be used instead.
KeyedVector<int64_t, off64_t> *mSeekSyncPoints;
off64_t mOffset;
static bool isScrambledFormat(const sp<MetaData> &format);
void init();
void addSource(const sp<AnotherPacketSource> &impl);
// Try to feed more data from source to parser.
// |isInit| means this function is called inside init(). This is a signal to
// save SyncEvent so that init() can add SyncPoint after it updates |mSourceImpls|.
// This function returns OK if expected amount of data is fed from DataSource to
// parser and is successfully parsed. Otherwise, various error codes could be
// returned, e.g., ERROR_END_OF_STREAM, or no data availalbe from DataSource, or
// the data has syntax error during parsing, etc.
status_t feedMore(bool isInit = false);
status_t seek(int64_t seekTimeUs,
const MediaSource::ReadOptions::SeekMode& seekMode);
status_t queueDiscontinuityForSeek(int64_t actualSeekTimeUs);
status_t seekBeyond(int64_t seekTimeUs);
status_t feedUntilBufferAvailable(const sp<AnotherPacketSource> &impl);
// Add a SynPoint derived from |event|.
void addSyncPoint_l(const ATSParser::SyncEvent &event);
status_t estimateDurationsFromTimesUsAtEnd();
bool SniffMPEG2TS(
const sp<DataSource> &source, String8 *mimeType, float *confidence,
sp<AMessage> *);
} // namespace android