Patch from Xavier Thomas:

YCbCr conversion function according to ITU-R BT.601/709 and JFIF

Clarifies color space usage in rgb->ycc conversion, doesn't change existing results.

1 files changed, 7 insertions, 2 deletions

diff --git a/source/blender/blenlib/BLI_math_color.h b/source/blender/blenlib/BLI_math_color.h
index 8c84df9c245..72724c1c0f7 100644
--- a/source/blender/blenlib/BLI_math_color.h
+++ b/source/blender/blenlib/BLI_math_color.h
@@ -41,20 +41,25 @@ extern "C" {
 #define BLI_PR_NONE		0
 #define BLI_PR_SRGB		1
 #define BLI_PR_REC709	2
+
+/* YCbCr */
+#define BLI_YCC_ITU_BT601	0
+#define BLI_YCC_ITU_BT709	1
+#define BLI_YCC_JFIF_0_255	2
 	
 /******************* Conversion to RGB ********************/
 
 void hsv_to_rgb(float h, float s, float v, float *r, float *g, float *b);
 void hex_to_rgb(char *hexcol, float *r, float *g, float *b);
 void yuv_to_rgb(float y, float u, float v, float *lr, float *lg, float *lb);
-void ycc_to_rgb(float y, float cb, float cr, float *lr, float *lg, float *lb);
+void ycc_to_rgb(float y, float cb, float cr, float *lr, float *lg, float *lb, int colorspace);
 void xyz_to_rgb(float x, float y, float z, float *r, float *g, float *b, int colorspace);
 void cpack_to_rgb(unsigned int col, float *r, float *g, float *b);
 
 /***************** Conversion from RGB ********************/
 
 void rgb_to_yuv(float r, float g, float b, float *ly, float *lu, float *lv);
-void rgb_to_ycc(float r, float g, float b, float *ly, float *lcb, float *lcr);
+void rgb_to_ycc(float r, float g, float b, float *ly, float *lcb, float *lcr, int colorspace);
 void rgb_to_hsv(float r, float g, float b, float *lh, float *ls, float *lv);
 unsigned int rgb_to_cpack(float r, float g, float b);
 unsigned int hsv_to_cpack(float h, float s, float v);