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https://github.com/libretro/scummvm.git
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b195ff5e19
Add limited support for unpacked PICT bits which FPFP Mac requires. SCI games use packed PICT bits unless an image is less than 8 bytes per row in which case they can't be packed, like FPFP's shovel icon. Fixes bug #7059 which prevents the game from being completed.
143 lines
3.8 KiB
C++
143 lines
3.8 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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/**
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* @file
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* Image decoder used in engines:
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* - mohawk
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* - pegasus
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* - sci
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*/
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#ifndef IMAGE_PICT_H
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#define IMAGE_PICT_H
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#include "common/array.h"
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#include "common/rect.h"
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#include "common/scummsys.h"
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#include "image/image_decoder.h"
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namespace Common {
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class SeekableReadStream;
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}
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namespace Graphics {
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struct Surface;
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}
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namespace Image {
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#define DECLARE_OPCODE(x) void x(Common::SeekableReadStream &stream)
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class PICTDecoder : public ImageDecoder {
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public:
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PICTDecoder();
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~PICTDecoder();
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// ImageDecoder API
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bool loadStream(Common::SeekableReadStream &stream);
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void destroy();
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const Graphics::Surface *getSurface() const { return _outputSurface; }
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const byte *getPalette() const { return _palette; }
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uint16 getPaletteColorCount() const { return _paletteColorCount; }
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struct PixMap {
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uint32 baseAddr;
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uint16 rowBytes;
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Common::Rect bounds;
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uint16 pmVersion;
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uint16 packType;
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uint32 packSize;
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uint32 hRes;
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uint32 vRes;
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uint16 pixelType;
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uint16 pixelSize;
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uint16 cmpCount;
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uint16 cmpSize;
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uint32 planeBytes;
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uint32 pmTable;
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uint32 pmReserved;
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};
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static PixMap readPixMap(Common::SeekableReadStream &stream, bool hasBaseAddr = true);
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private:
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Common::Rect _imageRect;
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byte _palette[256 * 3];
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uint16 _paletteColorCount;
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Graphics::Surface *_outputSurface;
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bool _continueParsing;
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// Utility Functions
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void unpackBitsRect(Common::SeekableReadStream &stream, bool withPalette);
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void unpackBitsLine(byte *out, uint32 length, Common::SeekableReadStream *stream, byte bitsPerPixel, byte bytesPerPixel);
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void skipBitsRect(Common::SeekableReadStream &stream, bool withPalette);
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void decodeCompressedQuickTime(Common::SeekableReadStream &stream);
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void outputPixelBuffer(byte *&out, byte value, byte bitsPerPixel);
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// Opcodes
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typedef void (PICTDecoder::*OpcodeProcPICT)(Common::SeekableReadStream &stream);
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struct PICTOpcode {
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PICTOpcode() { op = 0; proc = 0; desc = 0; }
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PICTOpcode(uint16 o, OpcodeProcPICT p, const char *d) { op = o; proc = p; desc = d; }
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uint16 op;
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OpcodeProcPICT proc;
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const char *desc;
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};
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Common::Array<PICTOpcode> _opcodes;
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// Common Opcodes
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void setupOpcodesCommon();
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DECLARE_OPCODE(o_nop);
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DECLARE_OPCODE(o_clip);
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DECLARE_OPCODE(o_txFont);
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DECLARE_OPCODE(o_txFace);
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DECLARE_OPCODE(o_pnSize);
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DECLARE_OPCODE(o_txSize);
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DECLARE_OPCODE(o_txRatio);
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DECLARE_OPCODE(o_versionOp);
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DECLARE_OPCODE(o_longText);
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DECLARE_OPCODE(o_longComment);
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DECLARE_OPCODE(o_opEndPic);
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DECLARE_OPCODE(o_headerOp);
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// Regular-mode Opcodes
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void setupOpcodesNormal();
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DECLARE_OPCODE(on_bitsRect);
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DECLARE_OPCODE(on_packBitsRect);
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DECLARE_OPCODE(on_directBitsRect);
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DECLARE_OPCODE(on_compressedQuickTime);
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// QuickTime-mode Opcodes
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void setupOpcodesQuickTime();
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DECLARE_OPCODE(oq_packBitsRect);
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DECLARE_OPCODE(oq_directBitsRect);
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DECLARE_OPCODE(oq_compressedQuickTime);
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};
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#undef DECLARE_OPCODE
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} // End of namespace Image
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#endif
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