FFmpeg
opusdsp.h
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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 #ifndef AVCODEC_OPUSDSP_H
20 #define AVCODEC_OPUSDSP_H
21 
22 #include "libavutil/common.h"
23 
24 #define CELT_EMPH_COEFF 0.8500061035f
25 
26 typedef struct OpusDSP {
27  void (*postfilter)(float *data, int period, float *gains, int len);
28  float (*deemphasis)(float *out, float *in, float coeff, int len);
29 } OpusDSP;
30 
32 
35 
36 #endif /* AVCODEC_OPUSDSP_H */
OpusDSP::postfilter
void(* postfilter)(float *data, int period, float *gains, int len)
Definition: opusdsp.h:27
out
FILE * out
Definition: movenc.c:54
data
const char data[16]
Definition: mxf.c:143
ctx
AVFormatContext * ctx
Definition: movenc.c:48
OpusDSP::deemphasis
float(* deemphasis)(float *out, float *in, float coeff, int len)
Definition: opusdsp.h: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
ff_opus_dsp_init_aarch64
void ff_opus_dsp_init_aarch64(OpusDSP *ctx)
Definition: opusdsp_init.c:28
common.h
ff_opus_dsp_init_x86
void ff_opus_dsp_init_x86(OpusDSP *ctx)
Definition: opusdsp_init.c:28
len
int len
Definition: vorbis_enc_data.h:426
coeff
static const double coeff[2][5]
Definition: vf_owdenoise.c:73
ff_opus_dsp_init
void ff_opus_dsp_init(OpusDSP *ctx)
Definition: opusdsp.c:52
OpusDSP
Definition: opusdsp.h:26