/
yuv_to_rgb.h
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/
yuv_to_rgb.h
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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
* YUV to RGB conversion used in engines:
* - mohawk
* - scumm (he)
* - sword25
*/
#ifndef GRAPHICS_YUV_TO_RGB_H
#define GRAPHICS_YUV_TO_RGB_H
#include "common/scummsys.h"
#include "common/singleton.h"
#include "graphics/surface.h"
namespace Graphics {
class YUVToRGBLookup;
class YUVToRGBManager : public Common::Singleton<YUVToRGBManager> {
public:
/** The scale of the luminance values */
enum LuminanceScale {
kScaleFull, /** Luminance values range from [0, 255] */
kScaleITU /** Luminance values range from [16, 235], the range from ITU-R BT.601 */
};
/**
* Convert a YUV444 image to an RGB surface
*
* @param dst the destination surface
* @param scale the scale of the luminance values
* @param ySrc the source of the y component
* @param uSrc the source of the u component
* @param vSrc the source of the v component
* @param yWidth the width of the y surface
* @param yHeight the height of the y surface
* @param yPitch the pitch of the y surface
* @param uvPitch the pitch of the u and v surfaces
*/
void convert444(Graphics::Surface *dst, LuminanceScale scale, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch);
/**
* Convert a YUV420 image to an RGB surface
*
* @param dst the destination surface
* @param scale the scale of the luminance values
* @param ySrc the source of the y component
* @param uSrc the source of the u component
* @param vSrc the source of the v component
* @param yWidth the width of the y surface (must be divisible by 2)
* @param yHeight the height of the y surface (must be divisible by 2)
* @param yPitch the pitch of the y surface
* @param uvPitch the pitch of the u and v surfaces
*/
void convert420(Graphics::Surface *dst, LuminanceScale scale, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch);
/**
* Convert a YUV410 image to an RGB surface
*
* Since the chroma has a very low resolution in 410, we perform bilinear scaling
* on the two chroma planes to produce the image. The chroma planes must have
* at least one extra row and one extra column that can be read from in order to
* produce a proper image. It is suggested that you fill these in with the previous
* row and column's data. This is required in order to speed up this function.
*
* @param dst the destination surface
* @param scale the scale of the luminance values
* @param ySrc the source of the y component
* @param uSrc the source of the u component
* @param vSrc the source of the v component
* @param yWidth the width of the y surface (must be divisible by 4)
* @param yHeight the height of the y surface (must be divisible by 4)
* @param yPitch the pitch of the y surface
* @param uvPitch the pitch of the u and v surfaces
*/
void convert410(Graphics::Surface *dst, LuminanceScale scale, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch);
private:
friend class Common::Singleton<SingletonBaseType>;
YUVToRGBManager();
~YUVToRGBManager();
const YUVToRGBLookup *getLookup(Graphics::PixelFormat format, LuminanceScale scale);
YUVToRGBLookup *_lookup;
int16 _colorTab[4 * 256]; // 2048 bytes
};
} // End of namespace Graphics
#define YUVToRGBMan (::Graphics::YUVToRGBManager::instance())
#endif