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Diffstat (limited to 'graphics/decoders/jpeg.h')
-rw-r--r-- | graphics/decoders/jpeg.h | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/graphics/decoders/jpeg.h b/graphics/decoders/jpeg.h deleted file mode 100644 index d59b72adf4..0000000000 --- a/graphics/decoders/jpeg.h +++ /dev/null @@ -1,141 +0,0 @@ -/* 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. - * - */ - -/** - * @file - * Image decoder used in engines: - * - groovie - * - mohawk - * - wintermute - */ - -#ifndef GRAPHICS_JPEG_H -#define GRAPHICS_JPEG_H - -#include "graphics/surface.h" -#include "graphics/decoders/image_decoder.h" - -namespace Common { -class SeekableReadStream; -} - -namespace Graphics { - -struct PixelFormat; - -#define JPEG_MAX_QUANT_TABLES 4 -#define JPEG_MAX_HUFF_TABLES 2 - -class JPEGDecoder : public ImageDecoder { -public: - JPEGDecoder(); - ~JPEGDecoder(); - - // ImageDecoder API - void destroy(); - bool loadStream(Common::SeekableReadStream &str); - const Surface *getSurface() const; - - bool isLoaded() const { return _numComp && _w && _h; } - uint16 getWidth() const { return _w; } - uint16 getHeight() const { return _h; } - const Surface *getComponent(uint c) const; - -private: - Common::SeekableReadStream *_stream; - uint16 _w, _h; - uint16 _restartInterval; - - // mutable so that we can convert to RGB only during - // a getSurface() call while still upholding the - // const requirement in other ImageDecoders - mutable Graphics::Surface *_rgbSurface; - - // Image components - uint8 _numComp; - struct Component { - // Global values - uint8 id; - uint8 factorH; - uint8 factorV; - uint8 quantTableSelector; - - // Scan specific values - uint8 DCentropyTableSelector; - uint8 ACentropyTableSelector; - int16 DCpredictor; - - // Result image for this component - Surface surface; - }; - - Component *_components; - - // Scan components - uint8 _numScanComp; - Component **_scanComp; - Component *_currentComp; - - // Maximum sampling factors, used to calculate the interleaving of the MCU - uint8 _maxFactorV; - uint8 _maxFactorH; - - // Quantization tables - uint16 *_quant[JPEG_MAX_QUANT_TABLES]; - - // Huffman tables - struct HuffmanTable { - uint8 count; - uint8 *values; - uint8 *sizes; - uint16 *codes; - } _huff[2 * JPEG_MAX_HUFF_TABLES]; - - // Marker read functions - bool readJFIF(); - bool readSOF0(); - bool readDHT(); - bool readSOS(); - bool readDQT(); - bool readDRI(); - - // Helper functions - bool readMCU(uint16 xMCU, uint16 yMCU); - bool readDataUnit(uint16 x, uint16 y); - int16 readDC(); - void readAC(int16 *out); - int16 readSignedBits(uint8 numBits); - - // Huffman decoding - uint8 readHuff(uint8 table); - uint8 readBit(); - uint8 _bitsData; - uint8 _bitsNumber; - - // Inverse Discrete Cosine Transformation - static void idct1D8x8(int32 src[8], int32 dest[64], int32 ps, int32 half); - static void idct2D8x8(int32 block[64]); -}; - -} // End of Graphics namespace - -#endif // GRAPHICS_JPEG_H |