1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 /** 24 * @file 25 * Image decoder used in engines: 26 * - mohawk 27 * - pegasus 28 * - sci 29 */ 30 31 #ifndef IMAGE_PICT_H 32 #define IMAGE_PICT_H 33 34 #include "common/array.h" 35 #include "common/rect.h" 36 #include "common/scummsys.h" 37 38 #include "image/image_decoder.h" 39 40 namespace Common { 41 class SeekableReadStream; 42 } 43 44 namespace Graphics { 45 struct Surface; 46 } 47 48 namespace Image { 49 50 #define DECLARE_OPCODE(x) void x(Common::SeekableReadStream &stream) 51 52 class PICTDecoder : public ImageDecoder { 53 public: 54 PICTDecoder(); 55 ~PICTDecoder(); 56 57 // ImageDecoder API 58 bool loadStream(Common::SeekableReadStream &stream); 59 void destroy(); getSurface()60 const Graphics::Surface *getSurface() const { return _outputSurface; } getPalette()61 const byte *getPalette() const { return _palette; } getPaletteColorCount()62 uint16 getPaletteColorCount() const { return _paletteColorCount; } 63 64 struct PixMap { 65 uint32 baseAddr; 66 uint16 rowBytes; 67 Common::Rect bounds; 68 uint16 pmVersion; 69 uint16 packType; 70 uint32 packSize; 71 uint32 hRes; 72 uint32 vRes; 73 uint16 pixelType; 74 uint16 pixelSize; 75 uint16 cmpCount; 76 uint16 cmpSize; 77 uint32 planeBytes; 78 uint32 pmTable; 79 uint32 pmReserved; 80 }; 81 82 static PixMap readPixMap(Common::SeekableReadStream &stream, bool hasBaseAddr = true); 83 84 private: 85 Common::Rect _imageRect; 86 byte _palette[256 * 3]; 87 uint16 _paletteColorCount; 88 Graphics::Surface *_outputSurface; 89 bool _continueParsing; 90 91 // Utility Functions 92 void unpackBitsRect(Common::SeekableReadStream &stream, bool withPalette); 93 void unpackBitsLine(byte *out, uint32 length, Common::SeekableReadStream *stream, byte bitsPerPixel, byte bytesPerPixel); 94 void skipBitsRect(Common::SeekableReadStream &stream, bool withPalette); 95 void decodeCompressedQuickTime(Common::SeekableReadStream &stream); 96 void outputPixelBuffer(byte *&out, byte value, byte bitsPerPixel); 97 98 // Opcodes 99 typedef void (PICTDecoder::*OpcodeProcPICT)(Common::SeekableReadStream &stream); 100 struct PICTOpcode { PICTOpcodePICTOpcode101 PICTOpcode() { op = 0; proc = 0; desc = 0; } PICTOpcodePICTOpcode102 PICTOpcode(uint16 o, OpcodeProcPICT p, const char *d) { op = o; proc = p; desc = d; } 103 uint16 op; 104 OpcodeProcPICT proc; 105 const char *desc; 106 }; 107 Common::Array<PICTOpcode> _opcodes; 108 109 // Common Opcodes 110 void setupOpcodesCommon(); 111 DECLARE_OPCODE(o_nop); 112 DECLARE_OPCODE(o_clip); 113 DECLARE_OPCODE(o_txFont); 114 DECLARE_OPCODE(o_txFace); 115 DECLARE_OPCODE(o_pnSize); 116 DECLARE_OPCODE(o_txSize); 117 DECLARE_OPCODE(o_txRatio); 118 DECLARE_OPCODE(o_versionOp); 119 DECLARE_OPCODE(o_longText); 120 DECLARE_OPCODE(o_longComment); 121 DECLARE_OPCODE(o_opEndPic); 122 DECLARE_OPCODE(o_headerOp); 123 124 // Regular-mode Opcodes 125 void setupOpcodesNormal(); 126 DECLARE_OPCODE(on_packBitsRect); 127 DECLARE_OPCODE(on_directBitsRect); 128 DECLARE_OPCODE(on_compressedQuickTime); 129 130 // QuickTime-mode Opcodes 131 void setupOpcodesQuickTime(); 132 DECLARE_OPCODE(oq_packBitsRect); 133 DECLARE_OPCODE(oq_directBitsRect); 134 DECLARE_OPCODE(oq_compressedQuickTime); 135 }; 136 137 #undef DECLARE_OPCODE 138 139 } // End of namespace Image 140 141 #endif 142