| /* |
| * 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 }; |