diff options
Diffstat (limited to 'graphics/yuv_to_rgb.h')
| -rw-r--r-- | graphics/yuv_to_rgb.h | 116 |
1 files changed, 72 insertions, 44 deletions
diff --git a/graphics/yuv_to_rgb.h b/graphics/yuv_to_rgb.h index 73a2c69d7d..f785422c5a 100644 --- a/graphics/yuv_to_rgb.h +++ b/graphics/yuv_to_rgb.h @@ -32,57 +32,85 @@ #define GRAPHICS_YUV_TO_RGB_H #include "common/scummsys.h" +#include "common/singleton.h" #include "graphics/surface.h" namespace Graphics { -/** - * Convert a YUV444 image to an RGB surface - * - * @param dst the destination surface - * @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 convertYUV444ToRGB(Graphics::Surface *dst, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch); +class YUVToRGBLookup; -/** - * Convert a YUV420 image to an RGB surface - * - * @param dst the destination surface - * @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 convertYUV420ToRGB(Graphics::Surface *dst, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch); +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 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 that can be read from in order to produce a proper - * image (filled with 0x80). This is required in order to speed up this function. - * - * @param dst the destination surface - * @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 convertYUV410ToRGB(Graphics::Surface *dst, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch); + /** + * 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 |