mirror of https://git.ffmpeg.org/ffmpeg.git
81 lines
2.8 KiB
C
81 lines
2.8 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 "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/x86/cpu.h"
|
|
#include "libavcodec/avcodec.h"
|
|
#include "libavcodec/idctdsp.h"
|
|
#include "idctdsp.h"
|
|
#include "simple_idct.h"
|
|
|
|
/* Input permutation for the simple_idct_mmx */
|
|
static const uint8_t simple_mmx_permutation[64] = {
|
|
0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
|
|
0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
|
|
0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
|
|
0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
|
|
0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
|
|
0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
|
|
0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
|
|
0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
|
|
};
|
|
|
|
static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };
|
|
|
|
av_cold int ff_init_scantable_permutation_x86(uint8_t *idct_permutation,
|
|
enum idct_permutation_type perm_type)
|
|
{
|
|
int i;
|
|
|
|
switch (perm_type) {
|
|
case FF_IDCT_PERM_SIMPLE:
|
|
for (i = 0; i < 64; i++)
|
|
idct_permutation[i] = simple_mmx_permutation[i];
|
|
return 1;
|
|
case FF_IDCT_PERM_SSE2:
|
|
for (i = 0; i < 64; i++)
|
|
idct_permutation[i] = (i & 0x38) | idct_sse2_row_perm[i & 7];
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth)
|
|
{
|
|
int cpu_flags = av_get_cpu_flags();
|
|
|
|
if (INLINE_MMX(cpu_flags)) {
|
|
c->put_pixels_clamped = ff_put_pixels_clamped_mmx;
|
|
c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmx;
|
|
c->add_pixels_clamped = ff_add_pixels_clamped_mmx;
|
|
|
|
if (!high_bit_depth &&
|
|
(avctx->idct_algo == FF_IDCT_AUTO ||
|
|
avctx->idct_algo == FF_IDCT_SIMPLEMMX)) {
|
|
c->idct_put = ff_simple_idct_put_mmx;
|
|
c->idct_add = ff_simple_idct_add_mmx;
|
|
c->idct = ff_simple_idct_mmx;
|
|
c->perm_type = FF_IDCT_PERM_SIMPLE;
|
|
}
|
|
}
|
|
}
|