549 static void color_to_hsv(struct tpg_data *tpg, int r, int g, int b,  in color_to_hsv()  argument
558 	g >>= 4;  in color_to_hsv()
562 	max_rgb = max3(r, g, b);  in color_to_hsv()
571 	min_rgb = min3(r, g, b);  in color_to_hsv()
586 		aux =  g - b;  in color_to_hsv()
588 	} else if (max_rgb == g) {  in color_to_hsv()
592 		aux =  r - g;  in color_to_hsv()
614 static void rgb2ycbcr(const int m[3][3], int r, int g, int b,  in rgb2ycbcr()  argument
617 	*y  = ((m[0][0] * r + m[0][1] * g + m[0][2] * b) >> 16) + (y_offset << 4);  in rgb2ycbcr()
618 	*cb = ((m[1][0] * r + m[1][1] * g + m[1][2] * b) >> 16) + (128 << 4);  in rgb2ycbcr()
619 	*cr = ((m[2][0] * r + m[2][1] * g + m[2][2] * b) >> 16) + (128 << 4);  in rgb2ycbcr()
622 static void color_to_ycbcr(struct tpg_data *tpg, int r, int g, int b,  in color_to_ycbcr()  argument
682 		rgb2ycbcr(full ? bt601_full : bt601, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
687 		rgb2ycbcr(bt601, r, g, b, 16, y, cb, cr);  in color_to_ycbcr()
692 		rgb2ycbcr(rec709, r, g, b, 16, y, cb, cr);  in color_to_ycbcr()
695 		rgb2ycbcr(full ? bt2020_full : bt2020, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
699 			 COEFF(0.6780, 255) * rec709_to_linear(g) +  in color_to_ycbcr()
713 		rgb2ycbcr(full ? smpte240m_full : smpte240m, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
717 		rgb2ycbcr(full ? rec709_full : rec709, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
723 			int y_offset, int *r, int *g, int *b)  in ycbcr2rgb()  argument
729 	*g = m[1][0] * y + m[1][1] * cb + m[1][2] * cr;  in ycbcr2rgb()
732 	*g = clamp(*g >> 12, 0, 0xff0);  in ycbcr2rgb()
737 			   int *r, int *g, int *b)  in ycbcr_to_color()  argument
797 		ycbcr2rgb(full ? bt601_full : bt601, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
802 		ycbcr2rgb(bt601, y, cb, cr, 16, r, g, b);  in ycbcr_to_color()
807 		ycbcr2rgb(rec709, y, cb, cr, 16, r, g, b);  in ycbcr_to_color()
810 		ycbcr2rgb(full ? bt2020_full : bt2020, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
834 		*g = linear_to_rec709(lin_g >> 12);  in ycbcr_to_color()
837 		ycbcr2rgb(full ? smpte240m_full : smpte240m, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
841 		ycbcr2rgb(full ? rec709_full : rec709, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
851 	int g = tpg_colors[col].g;  in precalculate_color()  local
860 		g = tpg_colors[col].g;  in precalculate_color()
866 		g = tpg_colors[col].g;  in precalculate_color()
869 		r = g = b = prandom_u32_max(256);  in precalculate_color()
871 		r = g = b = tpg->qual_offset + prandom_u32_max(196);  in precalculate_color()
873 		r = g = b = k - TPG_COLOR_RAMP;  in precalculate_color()
878 		g = tpg_csc_colors[tpg->colorspace][tpg->real_xfer_func][col].g;  in precalculate_color()
882 		g <<= 4;  in precalculate_color()
890 		r = g = b = (13879 * r + 46688 * g + 4713 * b) >> 16;  in precalculate_color()
909 		g = (g * 219) / 255 + (16 << 4);  in precalculate_color()
920 		g = clamp(g, 16 << 4, 235 << 4);  in precalculate_color()
923 		g = (g - (16 << 4)) * 255 / 219;  in precalculate_color()
935 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
950 			ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);  in precalculate_color()
962 		color_to_hsv(tpg, r, g, b, &h, &s, &v);  in precalculate_color()
972 			color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
1024 			g = (g * 219) / 255 + (16 << 4);  in precalculate_color()
1030 			g >>= 9;  in precalculate_color()
1036 			g >>= 6;  in precalculate_color()
1049 			g >>= 8;  in precalculate_color()
1065 			g >>= 7;  in precalculate_color()
1070 			g >>= 6;  in precalculate_color()
1075 			g >>= 4;  in precalculate_color()
1081 		tpg->colors[k][1] = g;  in precalculate_color()