/usr/include/thunderbird/mp4_demuxer/MoofParser.h is in thunderbird-dev 1:52.8.0-1~deb8u1.
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* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOOF_PARSER_H_
#define MOOF_PARSER_H_
#include "mp4_demuxer/Atom.h"
#include "mp4_demuxer/AtomType.h"
#include "mp4_demuxer/SinfParser.h"
#include "mp4_demuxer/Stream.h"
#include "mp4_demuxer/Interval.h"
#include "MediaResource.h"
namespace mp4_demuxer {
typedef int64_t Microseconds;
class Box;
class BoxContext;
class Moof;
class Mvhd : public Atom
{
public:
Mvhd()
: mCreationTime(0)
, mModificationTime(0)
, mTimescale(0)
, mDuration(0)
{
}
explicit Mvhd(Box& aBox);
Microseconds ToMicroseconds(int64_t aTimescaleUnits)
{
int64_t major = aTimescaleUnits / mTimescale;
int64_t remainder = aTimescaleUnits % mTimescale;
return major * 1000000ll + remainder * 1000000ll / mTimescale;
}
uint64_t mCreationTime;
uint64_t mModificationTime;
uint32_t mTimescale;
uint64_t mDuration;
};
class Tkhd : public Mvhd
{
public:
Tkhd()
: mTrackId(0)
{
}
explicit Tkhd(Box& aBox);
uint32_t mTrackId;
};
class Mdhd : public Mvhd
{
public:
Mdhd() = default;
explicit Mdhd(Box& aBox);
};
class Trex : public Atom
{
public:
explicit Trex(uint32_t aTrackId)
: mFlags(0)
, mTrackId(aTrackId)
, mDefaultSampleDescriptionIndex(0)
, mDefaultSampleDuration(0)
, mDefaultSampleSize(0)
, mDefaultSampleFlags(0)
{
}
explicit Trex(Box& aBox);
uint32_t mFlags;
uint32_t mTrackId;
uint32_t mDefaultSampleDescriptionIndex;
uint32_t mDefaultSampleDuration;
uint32_t mDefaultSampleSize;
uint32_t mDefaultSampleFlags;
};
class Tfhd : public Trex
{
public:
explicit Tfhd(Trex& aTrex)
: Trex(aTrex)
, mBaseDataOffset(0)
{
mValid = aTrex.IsValid();
}
Tfhd(Box& aBox, Trex& aTrex);
uint64_t mBaseDataOffset;
};
class Tfdt : public Atom
{
public:
Tfdt()
: mBaseMediaDecodeTime(0)
{
}
explicit Tfdt(Box& aBox);
uint64_t mBaseMediaDecodeTime;
};
class Edts : public Atom
{
public:
Edts()
: mMediaStart(0)
, mEmptyOffset(0)
{
}
explicit Edts(Box& aBox);
virtual bool IsValid()
{
// edts is optional
return true;
}
int64_t mMediaStart;
int64_t mEmptyOffset;
};
struct Sample
{
mozilla::MediaByteRange mByteRange;
mozilla::MediaByteRange mCencRange;
Microseconds mDecodeTime;
Interval<Microseconds> mCompositionRange;
bool mSync;
};
class Saiz final : public Atom
{
public:
Saiz(Box& aBox, AtomType aDefaultType);
AtomType mAuxInfoType;
uint32_t mAuxInfoTypeParameter;
FallibleTArray<uint8_t> mSampleInfoSize;
};
class Saio final : public Atom
{
public:
Saio(Box& aBox, AtomType aDefaultType);
AtomType mAuxInfoType;
uint32_t mAuxInfoTypeParameter;
FallibleTArray<uint64_t> mOffsets;
};
class AuxInfo {
public:
AuxInfo(int64_t aMoofOffset, Saiz& aSaiz, Saio& aSaio);
private:
int64_t mMoofOffset;
Saiz& mSaiz;
Saio& mSaio;
};
class Moof final : public Atom
{
public:
Moof(Box& aBox, Trex& aTrex, Mvhd& aMvhd, Mdhd& aMdhd, Edts& aEdts, Sinf& aSinf, uint64_t* aDecoderTime, bool aIsAudio);
bool GetAuxInfo(AtomType aType, nsTArray<MediaByteRange>* aByteRanges);
void FixRounding(const Moof& aMoof);
mozilla::MediaByteRange mRange;
mozilla::MediaByteRange mMdatRange;
Interval<Microseconds> mTimeRange;
FallibleTArray<Sample> mIndex;
nsTArray<Saiz> mSaizs;
nsTArray<Saio> mSaios;
private:
// aDecodeTime is updated to the end of the parsed TRAF on return.
void ParseTraf(Box& aBox, Trex& aTrex, Mvhd& aMvhd, Mdhd& aMdhd, Edts& aEdts, Sinf& aSinf, uint64_t* aDecodeTime, bool aIsAudio);
// aDecodeTime is updated to the end of the parsed TRUN on return.
bool ParseTrun(Box& aBox, Tfhd& aTfhd, Mvhd& aMvhd, Mdhd& aMdhd, Edts& aEdts, uint64_t* aDecodeTime, bool aIsAudio);
void ParseSaiz(Box& aBox);
void ParseSaio(Box& aBox);
bool ProcessCenc();
uint64_t mMaxRoundingError;
};
class MoofParser
{
public:
MoofParser(Stream* aSource, uint32_t aTrackId, bool aIsAudio)
: mSource(aSource)
, mOffset(0)
, mTrex(aTrackId)
, mIsAudio(aIsAudio)
, mLastDecodeTime(0)
{
// Setting the mTrex.mTrackId to 0 is a nasty work around for calculating
// the composition range for MSE. We need an array of tracks.
}
bool RebuildFragmentedIndex(
const mozilla::MediaByteRangeSet& aByteRanges);
// If *aCanEvict is set to true. then will remove all moofs already parsed
// from index then rebuild the index. *aCanEvict is set to true upon return if
// some moofs were removed.
bool RebuildFragmentedIndex(
const mozilla::MediaByteRangeSet& aByteRanges, bool* aCanEvict);
bool RebuildFragmentedIndex(BoxContext& aContext);
Interval<Microseconds> GetCompositionRange(
const mozilla::MediaByteRangeSet& aByteRanges);
bool ReachedEnd();
void ParseMoov(Box& aBox);
void ParseTrak(Box& aBox);
void ParseMdia(Box& aBox, Tkhd& aTkhd);
void ParseMvex(Box& aBox);
void ParseMinf(Box& aBox);
void ParseStbl(Box& aBox);
void ParseStsd(Box& aBox);
void ParseEncrypted(Box& aBox);
void ParseSinf(Box& aBox);
bool BlockingReadNextMoof();
bool HasMetadata();
already_AddRefed<mozilla::MediaByteBuffer> Metadata();
MediaByteRange FirstCompleteMediaSegment();
MediaByteRange FirstCompleteMediaHeader();
mozilla::MediaByteRange mInitRange;
RefPtr<Stream> mSource;
uint64_t mOffset;
Mvhd mMvhd;
Mdhd mMdhd;
Trex mTrex;
Tfdt mTfdt;
Edts mEdts;
Sinf mSinf;
nsTArray<Moof>& Moofs() { return mMoofs; }
private:
void ScanForMetadata(mozilla::MediaByteRange& aFtyp,
mozilla::MediaByteRange& aMoov);
nsTArray<Moof> mMoofs;
nsTArray<MediaByteRange> mMediaRanges;
bool mIsAudio;
uint64_t mLastDecodeTime;
};
}
#endif
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