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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/**
* @file
* Image decoder used in engines:
* - groovie
* - mohawk
* - wintermute
*/
#ifndef GRAPHICS_JPEG_H
#define GRAPHICS_JPEG_H
#include "graphics/surface.h"
#include "graphics/decoders/image_decoder.h"
namespace Common {
class SeekableReadStream;
}
namespace Graphics {
class JPEGDecoder : public ImageDecoder {
public:
JPEGDecoder();
~JPEGDecoder();
// ImageDecoder API
virtual void destroy();
virtual bool loadStream(Common::SeekableReadStream &str);
virtual const Surface *getSurface() const;
// Special API for JPEG
enum ColorSpace {
/**
* Output 32bit RGBA data.
*
* This is the default output.
*/
kColorSpaceRGBA,
/**
* Output (interleaved) YUV data.
*
* Be aware that some images cannot be output in YUV mode.
* These are (non-standard) JPEG images which are in RGB colorspace.
*
* The resulting Surface will have a PixelFormat with 3 bytes per
* pixel and the remaining entries are completely zeroed. This works
* around the fact that PixelFormat can only describe RGB formats.
*
* You should only use this when you are really aware of what you are
* doing!
*/
kColorSpaceYUV
};
/**
* Request the output color space. This can be used to obtain raw YUV
* data from the JPEG file. But this might not work for all files!
*
* The decoder itself defaults to RGBA.
*
* @param outSpace The color space to output.
*/
void setOutputColorSpace(ColorSpace outSpace) { _colorSpace = outSpace; }
private:
Graphics::Surface _surface;
ColorSpace _colorSpace;
};
} // End of Graphics namespace
#endif // GRAPHICS_JPEG_H
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