mirror of
https://github.com/libretro/scummvm.git
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121 lines
2.9 KiB
C++
121 lines
2.9 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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/* Intel Indeo 3 decompressor, derived from ffmpeg.
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*
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* Original copyright note:
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* Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
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* written, produced, and directed by Alan Smithee
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*/
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#ifndef GOB_INDEO3_H
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#define GOB_INDEO3_H
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#include "common/stream.h"
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namespace Graphics {
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class PaletteLUT;
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class SierraLight;
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}
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namespace Gob {
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class Indeo3 {
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public:
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enum DitherAlgorithm {
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kDitherNone = 0,
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kDitherSierraLight
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};
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Indeo3(int16 width, int16 height, Graphics::PaletteLUT *palLUT);
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~Indeo3();
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static bool isIndeo3(byte *data, uint32 dataLen);
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void setDither(DitherAlgorithm dither);
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bool decompressFrame(byte *inData, uint32 dataLen,
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byte *outData, uint16 width, uint16 height);
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private:
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static const int _corrector_type_0[24];
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static const int _corrector_type_2[8];
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static const uint32 correction[];
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static const uint32 correctionloworder[];
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static const uint32 correctionhighorder[];
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struct YUVBufs {
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byte *Ybuf;
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byte *Ubuf;
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byte *Vbuf;
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byte *the_buf;
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uint32 the_buf_size;
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uint16 y_w, y_h;
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uint16 uv_w, uv_h;
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};
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int16 _width;
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int16 _height;
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YUVBufs _iv_frame[2];
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YUVBufs *_cur_frame;
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YUVBufs *_ref_frame;
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byte *_ModPred;
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uint16 *_corrector_type;
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Graphics::PaletteLUT *_palLUT;
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DitherAlgorithm _dither;
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Graphics::SierraLight *_ditherSL;
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struct BlitState {
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uint32 curX, curY;
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uint16 widthY, widthUV;
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uint16 heightY, heightUV;
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uint16 uwidthUV, uwidthOut;
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uint16 uheightUV, uheightOut;
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uint16 scaleWYUV, scaleWYOut;
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uint16 scaleHYUV, scaleHYOut;
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uint16 lineWidthOut, lineHeightOut;
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byte *bufY, *bufU, *bufV, *bufOut;
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};
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void buildModPred();
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void allocFrames();
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void decodeChunk(byte *cur, byte *ref, int width, int height,
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const byte *buf1, uint32 fflags2, const byte *hdr,
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const byte *buf2, int min_width_160);
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void blitFrame(BlitState &s);
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void blitLine(BlitState &s);
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void blitLineDither(BlitState &s);
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};
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} // End of namespace Gob
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#endif // GOB_INDEO3_H
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