72 lines
2.2 KiB
C++
72 lines
2.2 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_DITHER_H
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#define IMAGE_CODECS_DITHER_H
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#include "image/codecs/codec.h"
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#include "common/types.h"
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#include "graphics/palette.h"
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namespace Image {
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class DitherCodec : public Codec {
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public:
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DitherCodec(Codec *codec, DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES);
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virtual ~DitherCodec() 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 setOutputPixelFormat(const Graphics::PixelFormat &format) override;
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bool containsPalette() const override;
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const byte *getPalette() override;
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bool hasDirtyPalette() const override;
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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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void setCodecAccuracy(CodecAccuracy accuracy) override;
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/**
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* Specify the source palette when dithering from CLUT8 to CLUT8.
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*/
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void setPalette(const byte *palette) { _srcPalette = palette; }
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/**
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* Create a dither table, as used by QuickTime codecs.
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*/
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static byte *createQuickTimeDitherTable(const byte *palette, uint colorCount);
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private:
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DisposeAfterUse::Flag _disposeAfterUse;
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Codec *_codec;
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const byte *_srcPalette;
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Graphics::Surface *_ditherFrame;
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Graphics::Palette _forcedDitherPalette;
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byte *_ditherTable;
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bool _dirtyPalette;
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};
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} // End of namespace Image
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#endif
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