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92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef IMAGE_CODECS_SVQ1_H
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#define IMAGE_CODECS_SVQ1_H
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#include "common/bitstream.h"
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#include "image/codecs/codec.h"
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namespace Common {
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template <class BITSTREAM>
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class Huffman;
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struct Point;
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}
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namespace Image {
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/**
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* Sorenson Vector Quantizer 1 decoder.
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*
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* Used by PICT/QuickTime.
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*/
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class SVQ1Decoder : public Codec {
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public:
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SVQ1Decoder(uint16 width, uint16 height);
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~SVQ1Decoder() override;
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const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream) override;
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Graphics::PixelFormat getPixelFormat() const override { return _pixelFormat; }
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bool setOutputPixelFormat(const Graphics::PixelFormat &format) override { _pixelFormat = format; return true; }
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private:
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Graphics::PixelFormat _pixelFormat;
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Graphics::Surface *_surface;
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uint16 _width, _height;
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uint16 _frameWidth, _frameHeight;
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byte *_last[3];
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typedef Common::Huffman<Common::BitStream32BEMSB> HuffmanDecoder;
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HuffmanDecoder *_blockType;
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HuffmanDecoder *_intraMultistage[6];
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HuffmanDecoder *_interMultistage[6];
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HuffmanDecoder *_intraMean;
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HuffmanDecoder *_interMean;
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HuffmanDecoder *_motionComponent;
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bool svq1DecodeBlockIntra(Common::BitStream32BEMSB *s, byte *pixels, int pitch);
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bool svq1DecodeBlockNonIntra(Common::BitStream32BEMSB *s, byte *pixels, int pitch);
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bool svq1DecodeMotionVector(Common::BitStream32BEMSB *s, Common::Point *mv, Common::Point **pmv);
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void svq1SkipBlock(byte *current, byte *previous, int pitch, int x, int y);
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bool svq1MotionInterBlock(Common::BitStream32BEMSB *ss, byte *current, byte *previous, int pitch,
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Common::Point *motion, int x, int y);
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bool svq1MotionInter4vBlock(Common::BitStream32BEMSB *ss, byte *current, byte *previous, int pitch,
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Common::Point *motion, int x, int y);
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bool svq1DecodeDeltaBlock(Common::BitStream32BEMSB *ss, byte *current, byte *previous, int pitch,
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Common::Point *motion, int x, int y);
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void putPixels8C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels8L2(byte *dst, const byte *src1, const byte *src2, int dstStride, int srcStride1, int srcStride2, int h);
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void putPixels8X2C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels8Y2C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels8XY2C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels16C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels16X2C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels16Y2C(byte *block, const byte *pixels, int lineSize, int h);
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void putPixels16XY2C(byte *block, const byte *pixels, int lineSize, int h);
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};
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} // End of namespace Image
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#endif
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