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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.
*
*/
#ifndef VIDEO_AVI_DECODER_H
#define VIDEO_AVI_DECODER_H
#include "common/array.h"
#include "common/rational.h"
#include "common/rect.h"
#include "common/str.h"
#include "video/video_decoder.h"
#include "audio/mixer.h"
namespace Audio {
class QueuingAudioStream;
}
namespace Common {
class SeekableReadStream;
}
namespace Graphics {
struct PixelFormat;
}
namespace Video {
class Codec;
/**
* Decoder for AVI videos.
*
* Video decoder used in engines:
* - sci
* - sword1
* - sword2
*/
class AVIDecoder : public VideoDecoder {
public:
AVIDecoder(Audio::Mixer::SoundType soundType = Audio::Mixer::kPlainSoundType);
AVIDecoder(const Common::Rational &frameRateOverride, Audio::Mixer::SoundType soundType = Audio::Mixer::kPlainSoundType);
virtual ~AVIDecoder();
bool loadStream(Common::SeekableReadStream *stream);
void close();
uint16 getWidth() const { return _header.width; }
uint16 getHeight() const { return _header.height; }
protected:
void readNextPacket();
struct BitmapInfoHeader {
uint32 size;
uint32 width;
uint32 height;
uint16 planes;
uint16 bitCount;
uint32 compression;
uint32 sizeImage;
uint32 xPelsPerMeter;
uint32 yPelsPerMeter;
uint32 clrUsed;
uint32 clrImportant;
};
struct WaveFormat {
uint16 tag;
uint16 channels;
uint32 samplesPerSec;
uint32 avgBytesPerSec;
uint16 blockAlign;
};
struct PCMWaveFormat : public WaveFormat {
uint16 size;
};
struct WaveFormatEX : public WaveFormat {
uint16 bitsPerSample;
uint16 size;
};
struct OldIndex {
uint32 id;
uint32 flags;
uint32 offset;
uint32 size;
};
// Index Flags
enum IndexFlags {
AVIIF_INDEX = 0x10
};
struct AVIHeader {
uint32 size;
uint32 microSecondsPerFrame;
uint32 maxBytesPerSecond;
uint32 padding;
uint32 flags;
uint32 totalFrames;
uint32 initialFrames;
uint32 streams;
uint32 bufferSize;
uint32 width;
uint32 height;
};
// Flags from the AVIHeader
enum AVIFlags {
AVIF_HASINDEX = 0x00000010,
AVIF_MUSTUSEINDEX = 0x00000020,
AVIF_ISINTERLEAVED = 0x00000100,
AVIF_TRUSTCKTYPE = 0x00000800,
AVIF_WASCAPTUREFILE = 0x00010000,
AVIF_WASCOPYRIGHTED = 0x00020000
};
struct AVIStreamHeader {
uint32 size;
uint32 streamType;
uint32 streamHandler;
uint32 flags;
uint16 priority;
uint16 language;
uint32 initialFrames;
uint32 scale;
uint32 rate;
uint32 start;
uint32 length;
uint32 bufferSize;
uint32 quality;
uint32 sampleSize;
Common::Rect frame;
};
class AVIVideoTrack : public FixedRateVideoTrack {
public:
AVIVideoTrack(int frameCount, const AVIStreamHeader &streamHeader, const BitmapInfoHeader &bitmapInfoHeader);
~AVIVideoTrack();
void decodeFrame(Common::SeekableReadStream *stream);
uint16 getWidth() const { return _bmInfo.width; }
uint16 getHeight() const { return _bmInfo.height; }
Graphics::PixelFormat getPixelFormat() const;
int getCurFrame() const { return _curFrame; }
int getFrameCount() const { return _frameCount; }
const Graphics::Surface *decodeNextFrame() { return _lastFrame; }
const byte *getPalette() const { _dirtyPalette = false; return _palette; }
bool hasDirtyPalette() const { return _dirtyPalette; }
void markPaletteDirty() { _dirtyPalette = true; }
protected:
Common::Rational getFrameRate() const { return Common::Rational(_vidsHeader.rate, _vidsHeader.scale); }
private:
AVIStreamHeader _vidsHeader;
BitmapInfoHeader _bmInfo;
byte _palette[3 * 256];
mutable bool _dirtyPalette;
int _frameCount, _curFrame;
Codec *_videoCodec;
const Graphics::Surface *_lastFrame;
Codec *createCodec();
};
class AVIAudioTrack : public AudioTrack {
public:
AVIAudioTrack(const AVIStreamHeader &streamHeader, const PCMWaveFormat &waveFormat, Audio::Mixer::SoundType soundType);
~AVIAudioTrack();
virtual void queueSound(Common::SeekableReadStream *stream);
Audio::Mixer::SoundType getSoundType() const { return _soundType; }
protected:
Audio::AudioStream *getAudioStream() const;
// Audio Codecs
enum {
kWaveFormatNone = 0,
kWaveFormatPCM = 1,
kWaveFormatMSADPCM = 2,
kWaveFormatMSIMAADPCM = 17,
kWaveFormatDK3 = 98 // rogue format number
};
AVIStreamHeader _audsHeader;
PCMWaveFormat _wvInfo;
Audio::Mixer::SoundType _soundType;
Audio::QueuingAudioStream *_audStream;
Audio::QueuingAudioStream *createAudioStream();
};
Common::Array<OldIndex> _indexEntries;
AVIHeader _header;
Common::SeekableReadStream *_fileStream;
bool _decodedHeader;
bool _foundMovieList;
uint32 _movieListStart;
Audio::Mixer::SoundType _soundType;
Common::Rational _frameRateOverride;
void initCommon();
bool parseNextChunk();
void skipChunk(uint32 size);
void handleList(uint32 listSize);
void handleStreamHeader(uint32 size);
uint16 getStreamType(uint32 tag) const { return tag & 0xFFFF; }
byte getStreamIndex(uint32 tag) const;
public:
virtual AVIAudioTrack *createAudioTrack(AVIStreamHeader sHeader, PCMWaveFormat wvInfo);
};
} // End of namespace Video
#endif
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