mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/ppc/cpu.h"
|
|
#include "libavutil/ppc/util_altivec.h"
|
|
|
|
#include "libavcodec/mpegvideoencdsp.h"
|
|
|
|
#if HAVE_ALTIVEC && HAVE_BIGENDIAN
|
|
|
|
static int pix_norm1_altivec(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(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;
|
|
}
|
|
|
|
#endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */
|
|
|
|
av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c,
|
|
AVCodecContext *avctx)
|
|
{
|
|
#if HAVE_ALTIVEC && HAVE_BIGENDIAN
|
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->pix_norm1 = pix_norm1_altivec;
|
|
c->pix_sum = pix_sum_altivec;
|
|
#endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */
|
|
}
|