mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
|
/*
|
||
|
|
* SIMD-optimized pixel operations
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "libavutil/attributes.h"
|
||
|
|
#include "libavcodec/pixblockdsp.h"
|
||
|
|
#include "asm.h"
|
||
|
|
|
||
|
|
static void get_pixels_mvi(int16_t *restrict block,
|
||
|
|
const uint8_t *restrict pixels, int line_size)
|
||
|
|
{
|
||
|
|
int h = 8;
|
||
|
|
|
||
|
|
do {
|
||
|
|
uint64_t p;
|
||
|
|
|
||
|
|
p = ldq(pixels);
|
||
|
|
stq(unpkbw(p), block);
|
||
|
|
stq(unpkbw(p >> 32), block + 4);
|
||
|
|
|
||
|
|
pixels += line_size;
|
||
|
|
block += 8;
|
||
|
|
} while (--h);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void diff_pixels_mvi(int16_t *block, const uint8_t *s1, const uint8_t *s2,
|
||
|
|
int stride) {
|
||
|
|
int h = 8;
|
||
|
|
uint64_t mask = 0x4040;
|
||
|
|
|
||
|
|
mask |= mask << 16;
|
||
|
|
mask |= mask << 32;
|
||
|
|
do {
|
||
|
|
uint64_t x, y, c, d, a;
|
||
|
|
uint64_t signs;
|
||
|
|
|
||
|
|
x = ldq(s1);
|
||
|
|
y = ldq(s2);
|
||
|
|
c = cmpbge(x, y);
|
||
|
|
d = x - y;
|
||
|
|
a = zap(mask, c); /* We use 0x4040404040404040 here... */
|
||
|
|
d += 4 * a; /* ...so we can use s4addq here. */
|
||
|
|
signs = zap(-1, c);
|
||
|
|
|
||
|
|
stq(unpkbw(d) | (unpkbw(signs) << 8), block);
|
||
|
|
stq(unpkbw(d >> 32) | (unpkbw(signs >> 32) << 8), block + 4);
|
||
|
|
|
||
|
|
s1 += stride;
|
||
|
|
s2 += stride;
|
||
|
|
block += 8;
|
||
|
|
} while (--h);
|
||
|
|
}
|
||
|
|
|
||
|
|
av_cold void ff_pixblockdsp_init_alpha(PixblockDSPContext *c, AVCodecContext *avctx,
|
||
|
|
unsigned high_bit_depth)
|
||
|
|
{
|
||
|
|
if (amask(AMASK_MVI) == 0) {
|
||
|
|
if (!high_bit_depth)
|
||
|
|
c->get_pixels = get_pixels_mvi;
|
||
|
|
c->diff_pixels = diff_pixels_mvi;
|
||
|
|
}
|
||
|
|
}
|