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5891ef4d89
Truemotion uses its own demuxer and seems to follow its own AVI rules. Work around it by coercing the video's dimensions to use the codec's internal dimensions.
108 lines
2.7 KiB
C++
108 lines
2.7 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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*
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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, 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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*/
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// Based on the TrueMotion 1 decoder by Alex Beregszaszi & Mike Melanson in FFmpeg
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// Only compile if SCI32 is enabled, ZVISION is enabled, or if we're building dynamic modules
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#if defined(ENABLE_SCI32) || defined(ENABLE_ZVISION) || defined(DYNAMIC_MODULES)
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#ifndef IMAGE_CODECS_TRUEMOTION1_H
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#define IMAGE_CODECS_TRUEMOTION1_H
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#include "image/codecs/codec.h"
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namespace Image {
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/**
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* Duck TrueMotion 1 decoder.
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*
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* Used by BMP/AVI.
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*/
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class TrueMotion1Decoder : public Codec {
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public:
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TrueMotion1Decoder();
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~TrueMotion1Decoder();
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const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream);
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// Always return RGB565
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Graphics::PixelFormat getPixelFormat() const { return Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0); }
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private:
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Graphics::Surface *_surface;
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int _mbChangeBitsRowSize;
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byte *_buf, *_mbChangeBits, *_indexStream;
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int _indexStreamSize;
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int _flags;
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struct PredictorTableEntry {
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uint32 color;
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bool getNextIndex;
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};
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PredictorTableEntry _yPredictorTable[1024];
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PredictorTableEntry _cPredictorTable[1024];
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int _blockType;
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int _blockWidth;
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int _blockHeight;
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int16 _ydt[8];
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int16 _cdt[8];
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int _lastDeltaset, _lastVectable;
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uint32 *_vertPred;
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struct {
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byte headerSize;
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byte compression;
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byte deltaset;
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byte vectable;
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uint16 ysize;
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uint16 xsize;
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uint16 checksum;
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byte version;
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byte headerType;
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byte flags;
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byte control;
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uint16 xoffset;
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uint16 yoffset;
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uint16 width;
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uint16 height;
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} _header;
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void selectDeltaTables(int deltaTableIndex);
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void decodeHeader(Common::SeekableReadStream &stream);
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void decode16();
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int makeYdt16Entry(int p1, int p2);
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int makeCdt16Entry(int p1, int p2);
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void genVectorTable16(const byte *selVectorTable);
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};
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} // End of namespace Image
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#endif // IMAGE_CODECS_TRUEMOTION1_H
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#endif // SCI32/Plugins guard
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