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Diffstat (limited to 'image/codecs/svq1.h')
| -rw-r--r-- | image/codecs/svq1.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/image/codecs/svq1.h b/image/codecs/svq1.h new file mode 100644 index 0000000000..236b810294 --- /dev/null +++ b/image/codecs/svq1.h @@ -0,0 +1,87 @@ +/* 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 IMAGE_CODECS_SVQ1_H +#define IMAGE_CODECS_SVQ1_H + +#include "image/codecs/codec.h" + +namespace Common { +class BitStream; +class Huffman; +struct Point; +} + +namespace Image { + +/** + * Sorenson Vector Quantizer 1 decoder. + * + * Used by PICT/QuickTime. + */ +class SVQ1Decoder : public Codec { +public: + SVQ1Decoder(uint16 width, uint16 height); + ~SVQ1Decoder(); + + const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream); + Graphics::PixelFormat getPixelFormat() const { return _surface->format; } + +private: + Graphics::Surface *_surface; + uint16 _width, _height; + uint16 _frameWidth, _frameHeight; + + byte *_last[3]; + + Common::Huffman *_blockType; + Common::Huffman *_intraMultistage[6]; + Common::Huffman *_interMultistage[6]; + Common::Huffman *_intraMean; + Common::Huffman *_interMean; + Common::Huffman *_motionComponent; + + bool svq1DecodeBlockIntra(Common::BitStream *s, byte *pixels, int pitch); + bool svq1DecodeBlockNonIntra(Common::BitStream *s, byte *pixels, int pitch); + bool svq1DecodeMotionVector(Common::BitStream *s, Common::Point *mv, Common::Point **pmv); + void svq1SkipBlock(byte *current, byte *previous, int pitch, int x, int y); + bool svq1MotionInterBlock(Common::BitStream *ss, byte *current, byte *previous, int pitch, + Common::Point *motion, int x, int y); + bool svq1MotionInter4vBlock(Common::BitStream *ss, byte *current, byte *previous, int pitch, + Common::Point *motion, int x, int y); + bool svq1DecodeDeltaBlock(Common::BitStream *ss, byte *current, byte *previous, int pitch, + Common::Point *motion, int x, int y); + + void putPixels8C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels8L2(byte *dst, const byte *src1, const byte *src2, int dstStride, int srcStride1, int srcStride2, int h); + void putPixels8X2C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels8Y2C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels8XY2C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels16C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels16X2C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels16Y2C(byte *block, const byte *pixels, int lineSize, int h); + void putPixels16XY2C(byte *block, const byte *pixels, int lineSize, int h); +}; + +} // End of namespace Image + +#endif |