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https://github.com/libretro/scummvm.git
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72 lines
2.5 KiB
C++
72 lines
2.5 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 IMAGE_CODECS_QTRLE_H
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#define IMAGE_CODECS_QTRLE_H
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#include "graphics/pixelformat.h"
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#include "image/codecs/codec.h"
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namespace Image {
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/**
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* QuickTime Run-Length Encoding decoder.
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*
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* Used by PICT/QuickTime.
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*/
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class QTRLEDecoder : public Codec {
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public:
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QTRLEDecoder(uint16 width, uint16 height, byte bitsPerPixel);
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~QTRLEDecoder() override;
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const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream) override;
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Graphics::PixelFormat getPixelFormat() const override;
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bool containsPalette() const override { return _ditherPalette != 0; }
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const byte *getPalette() override { _dirtyPalette = false; return _ditherPalette; }
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bool hasDirtyPalette() const override { return _dirtyPalette; }
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bool canDither(DitherType type) const override;
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void setDither(DitherType type, const byte *palette) override;
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private:
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byte _bitsPerPixel;
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Graphics::Surface *_surface;
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uint16 _width, _height;
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uint32 _paddedWidth;
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byte *_ditherPalette;
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bool _dirtyPalette;
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byte *_colorMap;
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void createSurface();
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void decode1(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
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void decode2_4(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange, byte bpp);
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void decode8(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
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void decode16(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
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void decode24(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
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void dither24(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
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void decode32(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
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};
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} // End of namespace Image
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#endif
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