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/* | |
* This file is part of FFmpeg. | |
* | |
* FFmpeg is free software; you can redistribute it and/or | |
* modify it under the terms of the GNU Lesser General Public | |
* License as published by the Free Software Foundation; either | |
* version 2.1 of the License, or (at your option) any later version. | |
* | |
* FFmpeg is distributed in the hope that it will be useful, | |
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
* Lesser General Public License for more details. | |
* | |
* You should have received a copy of the GNU Lesser General Public | |
* License along with FFmpeg; if not, write to the Free Software | |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
*/ | |
static int pix_norm1_altivec(const uint8_t *pix, int line_size) | |
{ | |
int i, s = 0; | |
const vector unsigned int zero = | |
(const vector unsigned int) vec_splat_u32(0); | |
vector unsigned int sv = (vector unsigned int) vec_splat_u32(0); | |
vector signed int sum; | |
for (i = 0; i < 16; i++) { | |
/* Read the potentially unaligned pixels. */ | |
//vector unsigned char pixl = vec_ld(0, pix); | |
//vector unsigned char pixr = vec_ld(15, pix); | |
//vector unsigned char pixv = vec_perm(pixl, pixr, perm); | |
vector unsigned char pixv = vec_vsx_ld(0, pix); | |
/* Square the values, and add them to our sum. */ | |
sv = vec_msum(pixv, pixv, sv); | |
pix += line_size; | |
} | |
/* Sum up the four partial sums, and put the result into s. */ | |
sum = vec_sums((vector signed int) sv, (vector signed int) zero); | |
sum = vec_splat(sum, 3); | |
vec_ste(sum, 0, &s); | |
return s; | |
} | |
static int pix_norm1_altivec(const uint8_t *pix, int line_size) | |
{ | |
int i, s = 0; | |
const vector unsigned int zero = | |
(const vector unsigned int) vec_splat_u32(0); | |
vector unsigned char perm = vec_lvsl(0, pix); | |
vector unsigned int sv = (vector unsigned int) vec_splat_u32(0); | |
vector signed int sum; | |
for (i = 0; i < 16; i++) { | |
/* Read the potentially unaligned pixels. */ | |
vector unsigned char pixl = vec_ld(0, pix); | |
vector unsigned char pixr = vec_ld(15, pix); | |
vector unsigned char pixv = vec_perm(pixl, pixr, perm); | |
/* Square the values, and add them to our sum. */ | |
sv = vec_msum(pixv, pixv, sv); | |
pix += line_size; | |
} | |
/* Sum up the four partial sums, and put the result into s. */ | |
sum = vec_sums((vector signed int) sv, (vector signed int) zero); | |
sum = vec_splat(sum, 3); | |
vec_ste(sum, 0, &s); | |
return s; | |
} | |
static int pix_sum_altivec(const uint8_t *pix, int line_size) | |
{ | |
int i, s; | |
const vector unsigned int zero = | |
(const vector unsigned int) vec_splat_u32(0); | |
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
vector signed int sumdiffs; | |
for (i = 0; i < 16; i++) { | |
/* Read the potentially unaligned 16 pixels into t1. */ | |
//vector unsigned char pixl = vec_ld(0, pix); | |
//vector unsigned char pixr = vec_ld(15, pix); | |
//vector unsigned char t1 = vec_perm(pixl, pixr, perm); | |
vector unsigned char t1 = vec_vsx_ld(0, pix); | |
/* Add each 4 pixel group together and put 4 results into sad. */ | |
sad = vec_sum4s(t1, sad); | |
pix += line_size; | |
} | |
/* Sum up the four partial sums, and put the result into s. */ | |
sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
sumdiffs = vec_splat(sumdiffs, 3); | |
vec_ste(sumdiffs, 0, &s); | |
return s; | |
} | |
static int pix_sum_altivec(const uint8_t *pix, int line_size) | |
{ | |
int i, s; | |
const vector unsigned int zero = | |
(const vector unsigned int) vec_splat_u32(0); | |
vector unsigned char perm = vec_lvsl(0, pix); | |
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |
vector signed int sumdiffs; | |
for (i = 0; i < 16; i++) { | |
/* Read the potentially unaligned 16 pixels into t1. */ | |
vector unsigned char pixl = vec_ld(0, pix); | |
vector unsigned char pixr = vec_ld(15, pix); | |
vector unsigned char t1 = vec_perm(pixl, pixr, perm); | |
/* Add each 4 pixel group together and put 4 results into sad. */ | |
sad = vec_sum4s(t1, sad); | |
pix += line_size; | |
} | |
/* Sum up the four partial sums, and put the result into s. */ | |
sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |
sumdiffs = vec_splat(sumdiffs, 3); | |
vec_ste(sumdiffs, 0, &s); | |
return s; | |
} | |
av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c, | |
AVCodecContext *avctx) | |
{ | |
if (!PPC_ALTIVEC(av_get_cpu_flags())) | |
return; | |
c->pix_norm1 = pix_norm1_altivec; | |
c->pix_sum = pix_sum_altivec; | |
} | |