87 lines
2.7 KiB
C++
87 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef ULTIMA4_GFX_IMAGELOADER_U4_H
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#define ULTIMA4_GFX_IMAGELOADER_U4_H
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#include "ultima/ultima4/gfx/imageloader.h"
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namespace Ultima {
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namespace Ultima4 {
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/**
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* Decoder for U4 raw images. Raw images are just an uncompressed
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* stream of pixel data with no palette information (e.g. shapes.ega,
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* charset.ega). This decoder handles the original 4-bit images, as
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* well as the 8-bit VGA upgrade images.
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*/
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class U4RawImageDecoder : public U4ImageDecoder {
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public:
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U4RawImageDecoder(int width, int height, int bpp)
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: U4ImageDecoder(width, height, bpp) {}
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bool loadStream(Common::SeekableReadStream &stream) override;
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};
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/**
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* Decoder for U4 images with RLE compression. Like raw images, the
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* data is just a stream of pixel data with no palette information
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* (e.g. start.ega, rune_*.ega). This decoder handles the original
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* 4-bit images, as well as the 8-bit VGA upgrade images.
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*/
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class U4RleImageDecoder : public U4ImageDecoder {
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public:
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U4RleImageDecoder(int width, int height, int bpp)
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: U4ImageDecoder(width, height, bpp) {}
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bool loadStream(Common::SeekableReadStream &stream) override;
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};
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/**
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* Decoder for U4 images with LZW compression. Like raw images, the
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* data is just a stream of pixel data with no palette information
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* (e.g. title.ega, tree.ega). This decoder handles the original 4-bit
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* images, as well as the 8-bit VGA upgrade images.
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*/
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class U4LzwImageDecoder : public U4ImageDecoder {
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public:
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U4LzwImageDecoder(int width, int height, int bpp)
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: U4ImageDecoder(width, height, bpp) {}
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bool loadStream(Common::SeekableReadStream &stream) override;
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};
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class U4PaletteLoader {
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static const byte _bwPalette[2 * 3];
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static byte *_egaPalette;
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static byte *_vgaPalette;
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public:
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const byte *loadBWPalette();
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const byte *loadEgaPalette();
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const byte *loadVgaPalette();
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};
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} // End of namespace Ultima4
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} // End of namespace Ultima
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#endif
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