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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef IMAGE_CODECS_QTRLE_H
#define IMAGE_CODECS_QTRLE_H
#include "graphics/pixelformat.h"
#include "image/codecs/codec.h"
namespace Image {
/**
* QuickTime Run-Length Encoding decoder.
*
* Used by PICT/QuickTime.
*/
class QTRLEDecoder : public Codec {
public:
QTRLEDecoder(uint16 width, uint16 height, byte bitsPerPixel);
~QTRLEDecoder() override;
const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream) override;
Graphics::PixelFormat getPixelFormat() const override;
bool containsPalette() const override { return _ditherPalette != 0; }
const byte *getPalette() override { _dirtyPalette = false; return _ditherPalette; }
bool hasDirtyPalette() const override { return _dirtyPalette; }
bool canDither(DitherType type) const override;
void setDither(DitherType type, const byte *palette) override;
private:
byte _bitsPerPixel;
Graphics::Surface *_surface;
uint16 _width, _height;
uint32 _paddedWidth;
byte *_ditherPalette;
bool _dirtyPalette;
byte *_colorMap;
void createSurface();
void decode1(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
void decode2_4(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange, byte bpp);
void decode8(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
void decode16(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
void decode24(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
void dither24(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
void decode32(Common::SeekableReadStream &stream, uint32 rowPtr, uint32 linesToChange);
};
} // End of namespace Image
#endif
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