mirror of
https://github.com/libretro/scummvm.git
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160 lines
3.6 KiB
C++
160 lines
3.6 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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#ifndef MOHAWK_BITMAP_H
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#define MOHAWK_BITMAP_H
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#include "mohawk/graphics.h"
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#include "common/scummsys.h"
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#include "common/stream.h"
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#include "graphics/surface.h"
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namespace Mohawk {
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class ImageData;
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enum BitmapFormat {
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kBitsPerPixel1 = 0x0000,
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kBitsPerPixel4 = 0x0001,
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kBitsPerPixel8 = 0x0002,
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kBitsPerPixel16 = 0x0003,
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kBitsPerPixel24 = 0x0004,
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kBitsPerPixelMask = 0x0007,
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kBitmapHasCLUT = 0x0008,
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kDrawMASK = 0x00f0,
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kDrawRaw = 0x0000,
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kDrawRLE8 = 0x0010,
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kDrawMSRLE8 = 0x0020,
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kDrawRLE = 0x0030,
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kPackMASK = 0x0f00,
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kPackNone = 0x0000,
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kPackLZ = 0x0100,
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kPackLZ1 = 0x0200,
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kPackRiven = 0x0400,
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kPackXDec = 0x0f00,
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kFlagMASK = 0xf000,
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kFlag16_80X86 = 0x1000, // 16 bit pixel data has been converted to 80X86 format
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kFlag24_MAC = 0x1000 // 24 bit pixel data has been converted to MAC 32 bit format
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};
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struct BitmapHeader {
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uint16 width;
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uint16 height;
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int16 bytesPerRow;
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uint16 format;
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struct ColorTable {
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uint16 tableSize;
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byte rgbBits;
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byte colorCount;
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byte* palette; // In 8bpp only
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} colorTable;
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};
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class MohawkBitmap {
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public:
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MohawkBitmap();
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virtual ~MohawkBitmap();
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virtual ImageData *decodeImage(Common::SeekableReadStream *stream);
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// Unpack Functions
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void unpackRaw();
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void unpackLZ();
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void unpackLZ1();
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void unpackRiven();
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// Draw Functions
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void drawRaw();
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void drawRLE8();
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void drawRLE();
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protected:
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BitmapHeader _header;
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byte getBitsPerPixel();
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// The actual LZ decoder
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static Common::SeekableReadStream *decompressLZ(Common::SeekableReadStream *stream, uint32 uncompressedSize);
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private:
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Common::SeekableReadStream *_data;
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Graphics::Surface *_surface;
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const char *getPackName();
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void unpackImage();
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const char *getDrawName();
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void drawImage();
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// Riven Decoding
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void handleRivenSubcommandStream(byte count, byte *&dst);
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};
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// Myst uses a different image format than that of other Mohawk games.
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// It essentially uses a Windows bitmap with the LZ encoding from the
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// Mohawk Bitmap format.
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class MystBitmap : public MohawkBitmap {
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public:
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MystBitmap() : MohawkBitmap() {}
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~MystBitmap() {}
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ImageData *decodeImage(Common::SeekableReadStream *stream);
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private:
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struct BitmapHeader {
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uint16 type;
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uint32 size;
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uint16 res1;
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uint16 res2;
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uint32 imageOffset;
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} _header;
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struct InfoHeader {
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uint32 size;
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uint32 width;
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uint32 height;
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uint16 planes;
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uint16 bitsPerPixel;
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uint32 compression;
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uint32 imageSize;
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uint32 pixelsPerMeterX;
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uint32 pixelsPerMeterY;
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uint32 colorsUsed;
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uint32 colorsImportant;
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} _info;
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};
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class OldMohawkBitmap : public MohawkBitmap {
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public:
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OldMohawkBitmap() : MohawkBitmap() {}
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~OldMohawkBitmap() {}
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ImageData *decodeImage(Common::SeekableReadStream *stream);
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};
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} // End of namespace Mohawk
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#endif
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