FFmpeg
opusdsp_init.c
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "config.h"
20 
21 #include "libavutil/attributes.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavcodec/opusdsp.h"
24 
25 void ff_opus_postfilter_fma3(float *data, int period, float *gains, int len);
26 float ff_opus_deemphasis_fma3(float *out, float *in, float coeff, int len);
27 
29 {
31 
32  if (EXTERNAL_FMA3(cpu_flags)) {
33  ctx->postfilter = ff_opus_postfilter_fma3;
34  ctx->deemphasis = ff_opus_deemphasis_fma3;
35  }
36 }
cpu.h
ff_opus_postfilter_fma3
void ff_opus_postfilter_fma3(float *data, int period, float *gains, int len)
out
FILE * out
Definition: movenc.c:54
opusdsp.h
data
const char data[16]
Definition: mxf.c:143
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:96
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
av_cold
#define av_cold
Definition: attributes.h:90
ctx
AVFormatContext * ctx
Definition: movenc.c:48
ff_opus_dsp_init_x86
av_cold void ff_opus_dsp_init_x86(OpusDSP *ctx)
Definition: opusdsp_init.c:28
period
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without period
Definition: writing_filters.txt:89
attributes.h
len
int len
Definition: vorbis_enc_data.h:426
ff_opus_deemphasis_fma3
float ff_opus_deemphasis_fma3(float *out, float *in, float coeff, int len)
coeff
static const double coeff[2][5]
Definition: vf_owdenoise.c:73
EXTERNAL_FMA3
#define EXTERNAL_FMA3(flags)
Definition: cpu.h:74
OpusDSP
Definition: opusdsp.h:26