quicktime.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

//
// Heavily based on ffmpeg code.
//
// Copyright (c) 2001 Fabrice Bellard.
// First version by Francois Revol revol@free.fr
// Seek function by Gael Chardon gael.dev@4now.net
//

#ifndef COMMON_QUICKTIME_H
#define COMMON_QUICKTIME_H

#include "common/array.h"
#include "common/scummsys.h"
#include "common/path.h"
#include "common/stream.h"
#include "common/rational.h"
#include "common/types.h"

namespace Common {
    class MacResManager;

class QuickTimeParser {
public:
    QuickTimeParser();
    virtual ~QuickTimeParser();

    bool parseFile(const Path &filename);

    bool parseStream(SeekableReadStream *stream, DisposeAfterUse::Flag disposeFileHandle = DisposeAfterUse::YES);

    void close();

    void setChunkBeginOffset(uint32 offset) { _beginOffset = offset; }

    uint32 getTimeScale() const { return _timeScale; }

    bool isOpen() const { return _fd != nullptr; }

protected:
    // This is the file handle from which data is read from. It can be the actual file handle or a decompressed stream.
    SeekableReadStream *_fd;

    struct TimeToSampleEntry {
        int count;
        int duration; // media time
    };

    struct SampleToChunkEntry {
        uint32 first;
        uint32 count;
        uint32 id;
    };

    struct EditListEntry {
        uint32 trackDuration; // movie time
        uint32 timeOffset;    // movie time
        int32 mediaTime;      // media time
        Rational mediaRate;
    };

    struct Track;

    class SampleDesc {
    public:
        SampleDesc(Track *parentTrack, uint32 codecTag);
        virtual ~SampleDesc();

        uint32 getCodecTag() const { return _codecTag; }

        SeekableReadStream *_extraData;
        byte _objectTypeMP4;

    protected:
        Track *_parentTrack;
        uint32 _codecTag;
    };

    enum CodecType {
        CODEC_TYPE_MOV_OTHER,
        CODEC_TYPE_VIDEO,
        CODEC_TYPE_AUDIO,
        CODEC_TYPE_MIDI
    };

    struct Track {
        Track();
        ~Track();

        uint32 chunkCount;
        uint32 *chunkOffsets;
        int timeToSampleCount;
        TimeToSampleEntry *timeToSample;
        uint32 sampleToChunkCount;
        SampleToChunkEntry *sampleToChunk;
        uint32 sampleSize;
        uint32 sampleCount;
        uint32 *sampleSizes;
        uint32 keyframeCount;
        uint32 *keyframes;
        int32 timeScale; // media time

        uint16 width;
        uint16 height;
        CodecType codecType;

        Array<SampleDesc *> sampleDescs;

        Common::Array<EditListEntry> editList;

        uint32 frameCount;    // from stts
        uint32 duration;      // movie time
        uint32 mediaDuration; // media time
        Rational scaleFactorX;
        Rational scaleFactorY;
    };

    virtual SampleDesc *readSampleDesc(Track *track, uint32 format, uint32 descSize) = 0;

    uint32 _timeScale;      // movie time
    uint32 _duration;       // movie time
    Rational _scaleFactorX;
    Rational _scaleFactorY;
    Array<Track *> _tracks;

    void init();

private:
    struct Atom {
        uint32 type;
        uint32 offset;
        uint32 size;
    };

    struct ParseTable {
        int (QuickTimeParser::*func)(Atom atom);
        uint32 type;
    };

    DisposeAfterUse::Flag _disposeFileHandle;
    const ParseTable *_parseTable;
    uint32 _beginOffset;
    MacResManager *_resFork;
    bool _foundMOOV;

    void initParseTable();

    int readDefault(Atom atom);
    int readLeaf(Atom atom);
    int readELST(Atom atom);
    int readHDLR(Atom atom);
    int readMDHD(Atom atom);
    int readMOOV(Atom atom);
    int readMVHD(Atom atom);
    int readTKHD(Atom atom);
    int readTRAK(Atom atom);
    int readSTCO(Atom atom);
    int readSTSC(Atom atom);
    int readSTSD(Atom atom);
    int readSTSS(Atom atom);
    int readSTSZ(Atom atom);
    int readSTTS(Atom atom);
    int readCMOV(Atom atom);
    int readWAVE(Atom atom);
    int readESDS(Atom atom);
    int readSMI(Atom atom);
};

} // End of namespace Common

#endif