445 			int y_offset, int *y, int *cb, int *cr)  in rgb2ycbcr()  argument
448 	*cb = ((m[1][0] * r + m[1][1] * g + m[1][2] * b) >> 16) + (128 << 4);  in rgb2ycbcr()
453 			   int *y, int *cb, int *cr)  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()
507 			*cb = (((b - yc) * COEFF(1.0 / 1.9404, 224)) >> 16) + (128 << 4);  in color_to_ycbcr()
509 			*cb = (((b - yc) * COEFF(1.0 / 1.5816, 224)) >> 16) + (128 << 4);  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()
526 static void ycbcr2rgb(const int m[3][3], int y, int cb, int cr,  in ycbcr2rgb()  argument
530 	cb -= 128 << 4;  in ycbcr2rgb()
532 	*r = m[0][0] * y + m[0][1] * cb + m[0][2] * cr;  in ycbcr2rgb()
533 	*g = m[1][0] * y + m[1][1] * cb + m[1][2] * cr;  in ycbcr2rgb()
534 	*b = m[2][0] * y + m[2][1] * cb + m[2][2] * cr;  in ycbcr2rgb()
540 static void ycbcr_to_color(struct tpg_data *tpg, int y, int cb, int cr,  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()
590 		cb -= 128 << 4;  in ycbcr_to_color()
593 		if (cb <= 0)  in ycbcr_to_color()
594 			*b = COEFF(1.0, 219) * y + COEFF(1.9404, 224) * cb;  in ycbcr_to_color()
596 			*b = COEFF(1.0, 219) * y + COEFF(1.5816, 224) * cb;  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()
700 		int y, cb, cr;  in precalculate_color()  local
705 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
710 		cb -= 128 << 4;  in precalculate_color()
712 		tmp_cb = (cb * cos(128 + tpg->hue)) / 127 + (cr * sin[128 + tpg->hue]) / 127;  in precalculate_color()
713 		tmp_cr = (cr * cos(128 + tpg->hue)) / 127 - (cb * sin[128 + tpg->hue]) / 127;  in precalculate_color()
715 		cb = (128 << 4) + (tmp_cb * tpg->contrast * tpg->saturation) / (128 * 128);  in precalculate_color()
719 			tpg->colors[k][1] = clamp(cb >> 4, 1, 254);  in precalculate_color()
723 		ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);  in precalculate_color()
728 		int y, cb, cr;  in precalculate_color()  local
730 		color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);  in precalculate_color()
734 			cb = clamp(cb, 16 << 4, 240 << 4);  in precalculate_color()
738 		cb = clamp(cb >> 4, 1, 254);  in precalculate_color()
743 			cb >>= 4;  in precalculate_color()
748 			cb >>= 3;  in precalculate_color()
753 			cb >>= 2;  in precalculate_color()
758 		tpg->colors[k][1] = cb;  in precalculate_color()