444 static void rgb2ycbcr(const int m[3][3], int r, int g, int b,  in rgb2ycbcr()  argument
447 	*y  = ((m[0][0] * r + m[0][1] * g + m[0][2] * b) >> 16) + (y_offset << 4);  in rgb2ycbcr()
448 	*cb = ((m[1][0] * r + m[1][1] * g + m[1][2] * b) >> 16) + (128 << 4);  in rgb2ycbcr()
449 	*cr = ((m[2][0] * r + m[2][1] * g + m[2][2] * b) >> 16) + (128 << 4);  in rgb2ycbcr()
452 static void color_to_ycbcr(struct tpg_data *tpg, int r, int g, int b,  in color_to_ycbcr()  argument
495 		rgb2ycbcr(full ? bt601_full : bt601, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
498 		rgb2ycbcr(bt2020, r, g, b, 16, y, cb, cr);  in color_to_ycbcr()
502 			 COEFF(0.6780, 255) * rec709_to_linear(g) +  in color_to_ycbcr()
516 		rgb2ycbcr(smpte240m, r, g, b, 16, y, cb, cr);  in color_to_ycbcr()
521 		rgb2ycbcr(full ? rec709_full : rec709, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
527 			int y_offset, int *r, int *g, int *b)  in ycbcr2rgb()  argument
533 	*g = m[1][0] * y + m[1][1] * cb + m[1][2] * cr;  in ycbcr2rgb()
536 	*g = clamp(*g >> 12, 0, 0xff0);  in ycbcr2rgb()
541 			   int *r, int *g, int *b)  in ycbcr_to_color()  argument
583 		ycbcr2rgb(full ? bt601_full : bt601, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
586 		ycbcr2rgb(bt2020, y, cb, cr, 16, r, g, b);  in ycbcr_to_color()
610 		*g = linear_to_rec709(lin_g >> 12);  in ycbcr_to_color()
613 		ycbcr2rgb(smpte240m, y, cb, cr, 16, r, g, b);  in ycbcr_to_color()
618 		ycbcr2rgb(full ? rec709_full : rec709, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
628 	int g = tpg_colors[col].g;  in precalculate_color()  local
635 		g = tpg_colors[col].g;  in precalculate_color()
641 		g = tpg_colors[col].g;  in precalculate_color()
644 		r = g = b = prandom_u32_max(256);  in precalculate_color()
646 		r = g = b = tpg->qual_offset + prandom_u32_max(196);  in precalculate_color()
648 		r = g = b = k - TPG_COLOR_RAMP;  in precalculate_color()
653 		g = tpg_csc_colors[tpg->colorspace][col].g;  in precalculate_color()
657 		g <<= 4;  in precalculate_color()
663 		r = g = b = (13879 * r + 46688 * g + 4713 * b) >> 16;  in precalculate_color()
681 		g = (g * 219) / 255 + (16 << 4);  in precalculate_color()
690 		g = clamp(g, 16 << 4, 235 << 4);  in precalculate_color()
693 		g = (g - (16 << 4)) * 255 / 219;  in precalculate_color()
705 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
723 		ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);  in precalculate_color()
730 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
763 			g = (g * 219) / 255 + (16 << 4);  in precalculate_color()
769 			g >>= 9;  in precalculate_color()
775 			g >>= 6;  in precalculate_color()
782 			g >>= 8;  in precalculate_color()
792 			g >>= 7;  in precalculate_color()
797 			g >>= 6;  in precalculate_color()
802 			g >>= 4;  in precalculate_color()
808 		tpg->colors[k][1] = g;  in precalculate_color()