FFmpeg  4.4.5
xvididct_init_mips.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/mips/cpu.h"
22 #include "xvididct_mips.h"
23 
25  unsigned high_bit_depth)
26 {
28 
29  if (have_mmi(cpu_flags)) {
30  if (!high_bit_depth) {
31  if (avctx->idct_algo == FF_IDCT_AUTO ||
32  avctx->idct_algo == FF_IDCT_XVID) {
33  c->idct_put = ff_xvid_idct_put_mmi;
34  c->idct_add = ff_xvid_idct_add_mmi;
35  c->idct = ff_xvid_idct_mmi;
36  c->perm_type = FF_IDCT_PERM_NONE;
37  }
38  }
39  }
40 }
#define av_cold
Definition: attributes.h:88
#define FF_IDCT_AUTO
Definition: avcodec.h:1720
#define FF_IDCT_XVID
Definition: avcodec.h:1727
static atomic_int cpu_flags
Definition: cpu.c:50
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
@ FF_IDCT_PERM_NONE
Definition: idctdsp.h:38
#define have_mmi(flags)
Definition: cpu.h:25
main external API structure.
Definition: avcodec.h:536
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
Definition: avcodec.h:1719
static double c[64]
void ff_xvid_idct_mmi(int16_t *block)
void ff_xvid_idct_put_mmi(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
void ff_xvid_idct_add_mmi(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
av_cold void ff_xvid_idct_init_mips(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)