466 			int y_offset, int *y, int *cb, int *cr)  in rgb2ycbcr()  argument
470 	*cr = ((m[2][0] * r + m[2][1] * g + m[2][2] * b) >> 16) + (128 << 4);  in rgb2ycbcr()
474 			   int *y, int *cb, int *cr)  in color_to_ycbcr()  argument
534 		rgb2ycbcr(full ? bt601_full : bt601, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
539 		rgb2ycbcr(bt601, r, g, b, 16, y, cb, cr);  in color_to_ycbcr()
544 		rgb2ycbcr(rec709, r, g, b, 16, y, cb, cr);  in color_to_ycbcr()
547 		rgb2ycbcr(full ? bt2020_full : bt2020, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
560 			*cr = (((r - yc) * (full ? bt2020c_full[2] : bt2020c[2])) >> 16) + (128 << 4);  in color_to_ycbcr()
562 			*cr = (((r - yc) * (full ? bt2020c_full[3] : bt2020c[3])) >> 16) + (128 << 4);  in color_to_ycbcr()
565 		rgb2ycbcr(full ? smpte240m_full : smpte240m, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
569 		rgb2ycbcr(full ? rec709_full : rec709, r, g, b, y_offset, y, cb, cr);  in color_to_ycbcr()
574 static void ycbcr2rgb(const int m[3][3], int y, int cb, int cr,  in ycbcr2rgb()  argument
579 	cr -= 128 << 4;  in ycbcr2rgb()
580 	*r = m[0][0] * y + m[0][1] * cb + m[0][2] * cr;  in ycbcr2rgb()
581 	*g = m[1][0] * y + m[1][1] * cb + m[1][2] * cr;  in ycbcr2rgb()
582 	*b = m[2][0] * y + m[2][1] * cb + m[2][2] * cr;  in ycbcr2rgb()
588 static void ycbcr_to_color(struct tpg_data *tpg, int y, int cb, int cr,  in ycbcr_to_color()  argument
650 		ycbcr2rgb(full ? bt601_full : bt601, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
655 		ycbcr2rgb(bt601, y, cb, cr, 16, r, g, b);  in ycbcr_to_color()
660 		ycbcr2rgb(rec709, y, cb, cr, 16, r, g, b);  in ycbcr_to_color()
663 		ycbcr2rgb(full ? bt2020_full : bt2020, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
668 		cr -= 128 << 4;  in ycbcr_to_color()
675 		if (cr <= 0)  in ycbcr_to_color()
676 			*r = y_fac * y + (full ? bt2020c_full[2] : bt2020c[2]) * cr;  in ycbcr_to_color()
678 			*r = y_fac * y + (full ? bt2020c_full[3] : bt2020c[3]) * cr;  in ycbcr_to_color()
690 		ycbcr2rgb(full ? smpte240m_full : smpte240m, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
694 		ycbcr2rgb(full ? rec709_full : rec709, y, cb, cr, y_offset, r, g, b);  in ycbcr_to_color()
778 		int y, cb, cr;  in precalculate_color()  local
783 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
789 		cr -= 128 << 4;  in precalculate_color()
790 		tmp_cb = (cb * cos(128 + tpg->hue)) / 127 + (cr * sin[128 + tpg->hue]) / 127;  in precalculate_color()
791 		tmp_cr = (cr * cos(128 + tpg->hue)) / 127 - (cb * sin[128 + tpg->hue]) / 127;  in precalculate_color()
794 		cr = (128 << 4) + (tmp_cr * tpg->contrast * tpg->saturation) / (128 * 128);  in precalculate_color()
798 			tpg->colors[k][2] = clamp(cr >> 4, 1, 254);  in precalculate_color()
801 		ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);  in precalculate_color()
806 		int y, cb, cr;  in precalculate_color()  local
808 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
813 			cr = clamp(cr, 16 << 4, 240 << 4);  in precalculate_color()
817 		cr = clamp(cr >> 4, 1, 254);  in precalculate_color()
822 			cr >>= 4;  in precalculate_color()
827 			cr >>= 3;  in precalculate_color()
832 			cr >>= 3;  in precalculate_color()
837 		tpg->colors[k][2] = cr;  in precalculate_color()