diff options
Diffstat (limited to 'media/libstagefright/matroska/mkvparser.hpp')
| -rw-r--r-- | media/libstagefright/matroska/mkvparser.hpp | 556 |
1 files changed, 0 insertions, 556 deletions
diff --git a/media/libstagefright/matroska/mkvparser.hpp b/media/libstagefright/matroska/mkvparser.hpp deleted file mode 100644 index f7d8948..0000000 --- a/media/libstagefright/matroska/mkvparser.hpp +++ /dev/null @@ -1,556 +0,0 @@ -// Copyright (c) 2010 The WebM project authors. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the LICENSE file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-
-#ifndef MKVPARSER_HPP
-#define MKVPARSER_HPP
-
-#include <cstdlib>
-#include <cstdio>
-
-namespace mkvparser
-{
-
-const int E_FILE_FORMAT_INVALID = -2;
-const int E_BUFFER_NOT_FULL = -3;
-
-class IMkvReader
-{
-public:
- virtual int Read(long long pos, long len, unsigned char* buf) = 0;
- virtual int Length(long long* total, long long* available) = 0;
-protected:
- virtual ~IMkvReader();
-};
-
-long long GetUIntLength(IMkvReader*, long long, long&);
-long long ReadUInt(IMkvReader*, long long, long&);
-long long SyncReadUInt(IMkvReader*, long long pos, long long stop, long&);
-long long UnserializeUInt(IMkvReader*, long long pos, long long size);
-float Unserialize4Float(IMkvReader*, long long);
-double Unserialize8Double(IMkvReader*, long long);
-short Unserialize2SInt(IMkvReader*, long long);
-signed char Unserialize1SInt(IMkvReader*, long long);
-bool Match(IMkvReader*, long long&, unsigned long, long long&);
-bool Match(IMkvReader*, long long&, unsigned long, char*&);
-bool Match(IMkvReader*, long long&, unsigned long,unsigned char*&, size_t&);
-bool Match(IMkvReader*, long long&, unsigned long, double&);
-bool Match(IMkvReader*, long long&, unsigned long, short&);
-
-void GetVersion(int& major, int& minor, int& build, int& revision);
-
-struct EBMLHeader
-{
- EBMLHeader();
- ~EBMLHeader();
- long long m_version;
- long long m_readVersion;
- long long m_maxIdLength;
- long long m_maxSizeLength;
- char* m_docType;
- long long m_docTypeVersion;
- long long m_docTypeReadVersion;
-
- long long Parse(IMkvReader*, long long&);
-};
-
-
-class Segment;
-class Track;
-class Cluster;
-
-class Block
-{
- Block(const Block&);
- Block& operator=(const Block&);
-
-public:
- const long long m_start;
- const long long m_size;
-
- Block(long long start, long long size, IMkvReader*);
-
- long long GetTrackNumber() const;
- long long GetTimeCode(Cluster*) const; //absolute, but not scaled
- long long GetTime(Cluster*) const; //absolute, and scaled (ns units)
- bool IsKey() const;
- void SetKey(bool);
-
- unsigned char Flags() const;
-
- long long GetOffset() const;
- long GetSize() const;
- long Read(IMkvReader*, unsigned char*) const;
-
-private:
- long long m_track; //Track::Number()
- short m_timecode; //relative to cluster
- unsigned char m_flags;
- long long m_frameOff;
- long m_frameSize;
-
-};
-
-
-class BlockEntry
-{
- BlockEntry(const BlockEntry&);
- BlockEntry& operator=(const BlockEntry&);
-
-public:
- virtual ~BlockEntry();
- virtual bool EOS() const = 0;
- virtual Cluster* GetCluster() const = 0;
- virtual size_t GetIndex() const = 0;
- virtual const Block* GetBlock() const = 0;
- virtual bool IsBFrame() const = 0;
-
-protected:
- BlockEntry();
-
-};
-
-
-class SimpleBlock : public BlockEntry
-{
- SimpleBlock(const SimpleBlock&);
- SimpleBlock& operator=(const SimpleBlock&);
-
-public:
- SimpleBlock(Cluster*, size_t, long long start, long long size);
-
- bool EOS() const;
- Cluster* GetCluster() const;
- size_t GetIndex() const;
- const Block* GetBlock() const;
- bool IsBFrame() const;
-
-protected:
- Cluster* const m_pCluster;
- const size_t m_index;
- Block m_block;
-
-};
-
-
-class BlockGroup : public BlockEntry
-{
- BlockGroup(const BlockGroup&);
- BlockGroup& operator=(const BlockGroup&);
-
-public:
- BlockGroup(Cluster*, size_t, long long, long long);
- ~BlockGroup();
-
- bool EOS() const;
- Cluster* GetCluster() const;
- size_t GetIndex() const;
- const Block* GetBlock() const;
- bool IsBFrame() const;
-
- short GetPrevTimeCode() const; //relative to block's time
- short GetNextTimeCode() const; //as above
-
-protected:
- Cluster* const m_pCluster;
- const size_t m_index;
-
-private:
- BlockGroup(Cluster*, size_t, unsigned long);
- void ParseBlock(long long start, long long size);
-
- short m_prevTimeCode;
- short m_nextTimeCode;
-
- //TODO: the Matroska spec says you can have multiple blocks within the
- //same block group, with blocks ranked by priority (the flag bits).
- //For now we just cache a single block.
-#if 0
- typedef std::deque<Block*> blocks_t;
- blocks_t m_blocks; //In practice should contain only a single element.
-#else
- Block* m_pBlock;
-#endif
-
-};
-
-
-class Track
-{
- Track(const Track&);
- Track& operator=(const Track&);
-
-public:
- Segment* const m_pSegment;
- virtual ~Track();
-
- long long GetType() const;
- long long GetNumber() const;
- const char* GetNameAsUTF8() const;
- const char* GetCodecNameAsUTF8() const;
- const char* GetCodecId() const;
- const unsigned char* GetCodecPrivate(size_t&) const;
-
- const BlockEntry* GetEOS() const;
-
- struct Settings
- {
- long long start;
- long long size;
- };
-
- struct Info
- {
- long long type;
- long long number;
- long long uid;
- char* nameAsUTF8;
- char* codecId;
- unsigned char* codecPrivate;
- size_t codecPrivateSize;
- char* codecNameAsUTF8;
- Settings settings;
- Info();
- void Clear();
- };
-
- long GetFirst(const BlockEntry*&) const;
- long GetNext(const BlockEntry* pCurr, const BlockEntry*& pNext) const;
- virtual bool VetEntry(const BlockEntry*) const = 0;
-
-protected:
- Track(Segment*, const Info&);
- const Info m_info;
-
- class EOSBlock : public BlockEntry
- {
- public:
- EOSBlock();
-
- bool EOS() const;
- Cluster* GetCluster() const;
- size_t GetIndex() const;
- const Block* GetBlock() const;
- bool IsBFrame() const;
- };
-
- EOSBlock m_eos;
-
-};
-
-
-class VideoTrack : public Track
-{
- VideoTrack(const VideoTrack&);
- VideoTrack& operator=(const VideoTrack&);
-
-public:
- VideoTrack(Segment*, const Info&);
- long long GetWidth() const;
- long long GetHeight() const;
- double GetFrameRate() const;
-
- bool VetEntry(const BlockEntry*) const;
-
-private:
- long long m_width;
- long long m_height;
- double m_rate;
-
-};
-
-
-class AudioTrack : public Track
-{
- AudioTrack(const AudioTrack&);
- AudioTrack& operator=(const AudioTrack&);
-
-public:
- AudioTrack(Segment*, const Info&);
- double GetSamplingRate() const;
- long long GetChannels() const;
- long long GetBitDepth() const;
- bool VetEntry(const BlockEntry*) const;
-
-private:
- double m_rate;
- long long m_channels;
- long long m_bitDepth;
-};
-
-
-class Tracks
-{
- Tracks(const Tracks&);
- Tracks& operator=(const Tracks&);
-
-public:
- Segment* const m_pSegment;
- const long long m_start;
- const long long m_size;
-
- Tracks(Segment*, long long start, long long size);
- virtual ~Tracks();
-
- Track* GetTrackByNumber(unsigned long tn) const;
- Track* GetTrackByIndex(unsigned long idx) const;
-
-private:
- Track** m_trackEntries;
- Track** m_trackEntriesEnd;
-
- void ParseTrackEntry(long long, long long, Track*&);
-
-public:
- unsigned long GetTracksCount() const;
-};
-
-
-class SegmentInfo
-{
- SegmentInfo(const SegmentInfo&);
- SegmentInfo& operator=(const SegmentInfo&);
-
-public:
- Segment* const m_pSegment;
- const long long m_start;
- const long long m_size;
-
- SegmentInfo(Segment*, long long start, long long size);
- ~SegmentInfo();
- long long GetTimeCodeScale() const;
- long long GetDuration() const; //scaled
- const char* GetMuxingAppAsUTF8() const;
- const char* GetWritingAppAsUTF8() const;
- const char* GetTitleAsUTF8() const;
-
-private:
- long long m_timecodeScale;
- double m_duration;
- char* m_pMuxingAppAsUTF8;
- char* m_pWritingAppAsUTF8;
- char* m_pTitleAsUTF8;
-};
-
-class Cues;
-class CuePoint
-{
- friend class Cues;
-
- CuePoint(size_t, long long);
- ~CuePoint();
-
- CuePoint(const CuePoint&);
- CuePoint& operator=(const CuePoint&);
-
-public:
- void Load(IMkvReader*);
-
- long long GetTimeCode() const; //absolute but unscaled
- long long GetTime(Segment*) const; //absolute and scaled (ns units)
-
- struct TrackPosition
- {
- long long m_track;
- long long m_pos; //of cluster
- long long m_block;
- //codec_state //defaults to 0
- //reference = clusters containing req'd referenced blocks
- // reftime = timecode of the referenced block
-
- void Parse(IMkvReader*, long long, long long);
- };
-
- const TrackPosition* Find(const Track*) const;
-
-private:
- const size_t m_index;
- long long m_timecode;
- TrackPosition* m_track_positions;
- size_t m_track_positions_count;
-
-};
-
-
-class Cues
-{
- friend class Segment;
-
- Cues(Segment*, long long start, long long size);
- ~Cues();
-
- Cues(const Cues&);
- Cues& operator=(const Cues&);
-
-public:
- Segment* const m_pSegment;
- const long long m_start;
- const long long m_size;
-
- bool Find( //lower bound of time_ns
- long long time_ns,
- const Track*,
- const CuePoint*&,
- const CuePoint::TrackPosition*&) const;
-
-#if 0
- bool FindNext( //upper_bound of time_ns
- long long time_ns,
- const Track*,
- const CuePoint*&,
- const CuePoint::TrackPosition*&) const;
-#endif
-
- const CuePoint* GetFirst() const;
- const CuePoint* GetLast() const;
-
- const CuePoint* GetNext(const CuePoint*) const;
-
- const BlockEntry* GetBlock(
- const CuePoint*,
- const CuePoint::TrackPosition*) const;
-
-private:
- void Init() const;
- bool LoadCuePoint() const;
- void PreloadCuePoint(size_t&, long long) const;
-
- mutable CuePoint** m_cue_points;
- mutable size_t m_count;
- mutable size_t m_preload_count;
- mutable long long m_pos;
-
-};
-
-
-class Cluster
-{
- Cluster(const Cluster&);
- Cluster& operator=(const Cluster&);
-
-public:
- Segment* const m_pSegment;
-
-public:
- static Cluster* Parse(Segment*, long, long long off);
-
- Cluster(); //EndOfStream
- ~Cluster();
-
- bool EOS() const;
-
- long long GetTimeCode(); //absolute, but not scaled
- long long GetTime(); //absolute, and scaled (nanosecond units)
- long long GetFirstTime(); //time (ns) of first (earliest) block
- long long GetLastTime(); //time (ns) of last (latest) block
-
- const BlockEntry* GetFirst();
- const BlockEntry* GetLast();
- const BlockEntry* GetNext(const BlockEntry*) const;
- const BlockEntry* GetEntry(const Track*);
- const BlockEntry* GetEntry(
- const CuePoint&,
- const CuePoint::TrackPosition&);
- const BlockEntry* GetMaxKey(const VideoTrack*);
-
-protected:
- Cluster(Segment*, long, long long off);
-
-public:
- //TODO: these should all be private, with public selector functions
- long m_index;
- long long m_pos;
- long long m_size;
-
-private:
- long long m_timecode;
- BlockEntry** m_entries;
- size_t m_entriesCount;
-
- void Load();
- void LoadBlockEntries();
- void ParseBlockGroup(long long, long long, size_t);
- void ParseSimpleBlock(long long, long long, size_t);
-
-};
-
-
-class Segment
-{
- friend class Cues;
-
- Segment(const Segment&);
- Segment& operator=(const Segment&);
-
-private:
- Segment(IMkvReader*, long long pos, long long size);
-
-public:
- IMkvReader* const m_pReader;
- const long long m_start; //posn of segment payload
- const long long m_size; //size of segment payload
- Cluster m_eos; //TODO: make private?
-
- static long long CreateInstance(IMkvReader*, long long, Segment*&);
- ~Segment();
-
- long Load(); //loads headers and all clusters
-
- //for incremental loading (splitter)
- long long Unparsed() const;
- long long ParseHeaders(); //stops when first cluster is found
- long LoadCluster(); //loads one cluster
-
-#if 0
- //This pair parses one cluster, but only changes the state of the
- //segment object when the cluster is actually added to the index.
- long ParseCluster(Cluster*&, long long& newpos) const;
- bool AddCluster(Cluster*, long long);
-#endif
-
- Tracks* GetTracks() const;
- const SegmentInfo* GetInfo() const;
- const Cues* GetCues() const;
-
- long long GetDuration() const;
-
- unsigned long GetCount() const;
- Cluster* GetFirst();
- Cluster* GetLast();
- Cluster* GetNext(const Cluster*);
-
- Cluster* FindCluster(long long time_nanoseconds);
- const BlockEntry* Seek(long long time_nanoseconds, const Track*);
-
-private:
-
- long long m_pos; //absolute file posn; what has been consumed so far
- SegmentInfo* m_pInfo;
- Tracks* m_pTracks;
- Cues* m_pCues;
- Cluster** m_clusters;
- long m_clusterCount; //number of entries for which m_index >= 0
- long m_clusterPreloadCount; //number of entries for which m_index < 0
- long m_clusterSize; //array size
-
- void AppendCluster(Cluster*);
- void PreloadCluster(Cluster*, ptrdiff_t);
-
- void ParseSeekHead(long long pos, long long size);
- void ParseSeekEntry(long long pos, long long size);
- void ParseCues(long long);
-
- const BlockEntry* GetBlock(
- const CuePoint&,
- const CuePoint::TrackPosition&);
-
-};
-
-
-} //end namespace mkvparser
-
-#endif //MKVPARSER_HPP
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