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/* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
//
// 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 GRAPHICS_QT_DECODER_H
#define GRAPHICS_QT_DECODER_H
#include "common/scummsys.h"
#include "common/queue.h"
#include "graphics/video/video_decoder.h"
#include "graphics/video/codecs/codec.h"
#include "sound/audiostream.h"
#include "sound/mixer.h"
namespace Common {
class File;
class MacResManager;
}
namespace Graphics {
enum ScaleMode {
kScaleNormal = 1,
kScaleHalf = 2,
kScaleQuarter = 4
};
class QuickTimeDecoder : public RewindableVideoDecoder {
public:
QuickTimeDecoder();
virtual ~QuickTimeDecoder();
/**
* Returns the width of the video
* @return the width of the video
*/
uint16 getWidth() const;
/**
* Returns the height of the video
* @return the height of the video
*/
uint16 getHeight() const;
/**
* Returns the amount of frames in the video
* @return the amount of frames in the video
*/
uint32 getFrameCount() const;
/**
* Load a video file
* @param filename the filename to load
*/
bool loadFile(const Common::String &filename);
/**
* Load a QuickTime video file from a SeekableReadStream
* @param stream the stream to load
*/
bool load(Common::SeekableReadStream &stream);
/**
* Close a QuickTime encoded video file
*/
void close();
/**
* Returns the palette of the video
* @return the palette of the video
*/
byte *getPalette() { _dirtyPalette = false; return _palette; }
bool hasDirtyPalette() const { return _dirtyPalette; }
/**
* Set the beginning offset of the video so we can modify the offsets in the stco
* atom of videos inside the Mohawk archives
* @param the beginning offset of the video
*/
void setChunkBeginOffset(uint32 offset) { _beginOffset = offset; }
bool isVideoLoaded() const { return _fd != 0; }
Surface *decodeNextFrame();
bool endOfVideo() const;
uint32 getElapsedTime() const;
uint32 getTimeToNextFrame() const;
PixelFormat getPixelFormat() const;
// RewindableVideoDecoder API
void rewind();
// TODO: This audio function need to be removed from the public and/or added to
// the VideoDecoder API directly. I plan on replacing this function with something
// that can figure out how much audio is needed instead of constantly keeping two
// chunks in memory.
void updateAudioBuffer();
protected:
// This is the file handle from which data is read from. It can be the actual file handle or a decompressed stream.
Common::SeekableReadStream *_fd;
struct MOVatom {
uint32 type;
uint32 offset;
uint32 size;
};
struct ParseTable {
int (QuickTimeDecoder::*func)(MOVatom atom);
uint32 type;
};
struct MOVstts {
int count;
int duration;
};
struct MOVstsc {
uint32 first;
uint32 count;
uint32 id;
};
enum CodecType {
CODEC_TYPE_MOV_OTHER,
CODEC_TYPE_VIDEO,
CODEC_TYPE_AUDIO
};
struct MOVStreamContext {
MOVStreamContext() { memset(this, 0, sizeof(MOVStreamContext)); }
~MOVStreamContext() {
delete[] chunk_offsets;
delete[] stts_data;
delete[] ctts_data;
delete[] sample_to_chunk;
delete[] sample_sizes;
delete[] keyframes;
delete extradata;
}
int ffindex; /* the ffmpeg stream id */
int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
uint32 next_chunk;
uint32 chunk_count;
uint32 *chunk_offsets;
int stts_count;
MOVstts *stts_data;
int ctts_count;
MOVstts *ctts_data;
int edit_count; /* number of 'edit' (elst atom) */
uint32 sample_to_chunk_sz;
MOVstsc *sample_to_chunk;
int32 sample_to_chunk_index;
int sample_to_time_index;
uint32 sample_to_time_sample;
uint32 sample_to_time_time;
int sample_to_ctime_index;
int sample_to_ctime_sample;
uint32 sample_size;
uint32 sample_count;
uint32 *sample_sizes;
uint32 keyframe_count;
uint32 *keyframes;
int32 time_scale;
int time_rate;
uint32 current_sample;
uint32 left_in_chunk; /* how many samples before next chunk */
uint16 width;
uint16 height;
int codec_type;
uint32 codec_tag;
char codec_name[32];
uint16 bits_per_sample;
uint16 color_table_id;
bool palettized;
Common::SeekableReadStream *extradata;
uint16 stsd_version;
uint16 channels;
uint16 sample_rate;
uint32 samples_per_frame;
uint32 bytes_per_frame;
uint32 nb_frames;
uint32 duration;
uint32 start_time;
ScaleMode scaleMode;
};
const ParseTable *_parseTable;
bool _foundMOOV;
bool _foundMDAT;
uint32 _timeScale;
uint32 _duration;
uint32 _mdatOffset;
uint32 _mdatSize;
MOVStreamContext *_partial;
uint32 _numStreams;
int _ni;
ScaleMode _scaleMode;
MOVStreamContext *_streams[20];
byte _palette[256 * 3];
bool _dirtyPalette;
uint32 _beginOffset;
Common::MacResManager *_resFork;
void initParseTable();
Audio::AudioStream *createAudioStream(Common::SeekableReadStream *stream);
bool checkAudioCodecSupport(uint32 tag);
Common::SeekableReadStream *getNextFramePacket();
uint32 getFrameDuration();
uint32 getCodecTag();
byte getBitsPerPixel();
void init();
Audio::QueuingAudioStream *_audStream;
void startAudio();
void stopAudio();
int8 _audioStreamIndex;
uint _curAudioChunk;
Audio::SoundHandle _audHandle;
Codec *createCodec(uint32 codecTag, byte bitsPerPixel);
Codec *_videoCodec;
uint32 _nextFrameStartTime;
int8 _videoStreamIndex;
Surface *_scaledSurface;
Surface *scaleSurface(Surface *frame);
ScaleMode getScaleMode() const;
void pauseVideoIntern(bool pause);
int readDefault(MOVatom atom);
int readLeaf(MOVatom atom);
int readELST(MOVatom atom);
int readHDLR(MOVatom atom);
int readMDAT(MOVatom atom);
int readMDHD(MOVatom atom);
int readMOOV(MOVatom atom);
int readMVHD(MOVatom atom);
int readTKHD(MOVatom atom);
int readTRAK(MOVatom atom);
int readSTCO(MOVatom atom);
int readSTSC(MOVatom atom);
int readSTSD(MOVatom atom);
int readSTSS(MOVatom atom);
int readSTSZ(MOVatom atom);
int readSTTS(MOVatom atom);
int readCMOV(MOVatom atom);
int readWAVE(MOVatom atom);
};
} // End of namespace Graphics
#endif
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