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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_CODECS_CINEPAK_H
#define VIDEO_CODECS_CINEPAK_H
#include "common/scummsys.h"
#include "common/rect.h"
#include "graphics/pixelformat.h"
#include "video/codecs/codec.h"
namespace Common {
class SeekableReadStream;
}
namespace Video {
struct CinepakCodebook {
// These are not in the normal YUV colorspace, but in the Cinepak YUV colorspace instead.
byte y[4]; // [0, 255]
int8 u, v; // [-128, 127]
};
struct CinepakStrip {
uint16 id;
uint16 length;
Common::Rect rect;
CinepakCodebook v1_codebook[256], v4_codebook[256];
};
struct CinepakFrame {
byte flags;
uint32 length;
uint16 width;
uint16 height;
uint16 stripCount;
CinepakStrip *strips;
Graphics::Surface *surface;
};
/**
* Cinepak decoder.
*
* Used in video:
* - AVIDecoder
* - QuickTimeDecoder
*/
class CinepakDecoder : public Codec {
public:
CinepakDecoder(int bitsPerPixel = 24);
~CinepakDecoder();
const Graphics::Surface *decodeImage(Common::SeekableReadStream *stream);
Graphics::PixelFormat getPixelFormat() const { return _pixelFormat; }
private:
CinepakFrame _curFrame;
int32 _y;
Graphics::PixelFormat _pixelFormat;
byte *_clipTable, *_clipTableBuf;
void loadCodebook(Common::SeekableReadStream *stream, uint16 strip, byte codebookType, byte chunkID, uint32 chunkSize);
void decodeVectors(Common::SeekableReadStream *stream, uint16 strip, byte chunkID, uint32 chunkSize);
};
} // End of namespace Video
#endif
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