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/*
* Copyright © 2006 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Keith Packard <keithp@keithp.com>
* Eric Anholt <eric@anholt.net>
*
*/
include(`exa_wm.g4i')
define(`YCbCr_base', `src_sample_base')
define(`Cr', `src_sample_r')
define(`Cr_01', `src_sample_r_01')
define(`Cr_23', `src_sample_r_23')
define(`Y', `src_sample_g')
define(`Y_01', `src_sample_g_01')
define(`Y_23', `src_sample_g_23')
define(`Cb', `src_sample_b')
define(`Cb_01', `src_sample_b_01')
define(`Cb_23', `src_sample_b_23')
define(`Crn', `mask_sample_r')
define(`Crn_01', `mask_sample_r_01')
define(`Crn_23', `mask_sample_r_23')
define(`Yn', `mask_sample_g')
define(`Yn_01', `mask_sample_g_01')
define(`Yn_23', `mask_sample_g_23')
define(`Cbn', `mask_sample_b')
define(`Cbn_01', `mask_sample_b_01')
define(`Cbn_23', `mask_sample_b_23')
/* color space conversion function:
* R = Clamp ( 1.164(Y-16/255) + 1.596(Cr-128/255), 0, 1)
* G = Clamp ( 1.164(Y-16/255) - 0.813(Cr-128/255) - 0.392(Cb-128/255), 0, 1)
* B = Clamp ( 1.164(Y-16/255) + 2.017(Cb-128/255), 0, 1)
*/
/* Normalize Y, Cb and Cr:
*
* Yn = (Y - 16/255) * 1.164
* Crn = Cr - 128 / 255
* Cbn = Cb - 128 / 255
*/
add (16) Yn<1>F Y<8,8,1>F -0.0627451F { compr align1 };
mul (16) Yn<1>F Yn<8,8,1>F 1.164F { compr align1 };
add (16) Crn<1>F Cr<8,8,1>F -0.501961F { compr align1 };
add (16) Cbn<1>F Cb<8,8,1>F -0.501961F { compr align1 };
/*
* R = Y + Cr * 1.596
*/
mov (16) acc0<1>F Yn<8,8,1>F { compr align1 };
mac.sat(16) src_sample_r<1>F Crn<8,8,1>F 1.596F { compr align1 };
/*
* G = Crn * -0.813 + Cbn * -0.392 + Y
*/
mov (16) acc0<1>F Yn<8,8,1>F { compr align1 };
mac (16) acc0<1>F Crn<8,8,1>F -0.813F { compr align1 };
mac.sat(16) src_sample_g<1>F Cbn<8,8,1>F -0.392F { compr align1 };
/*
* B = Cbn * 2.017 + Y
*/
mov (16) acc0<1>F Yn<8,8,1>F { compr align1 };
mac.sat(16) src_sample_b<1>F Cbn<8,8,1>F 2.017F { compr align1 };
/*
* A = 1.0
*/
mov (16) src_sample_a<1>F 1.0F { compr align1 };
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