FFmpeg
af_volume.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 /**
20  * @file
21  * audio volume filter
22  */
23 
24 #ifndef AVFILTER_VOLUME_H
25 #define AVFILTER_VOLUME_H
26 
27 #include "libavutil/common.h"
28 #include "libavutil/eval.h"
29 #include "libavutil/float_dsp.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/samplefmt.h"
32 
37 };
38 
39 enum EvalMode {
43 };
44 
59 };
60 
66 };
67 
68 typedef struct VolumeContext {
69  const AVClass *class;
71  int precision;
72  int eval_mode;
73  const char *volume_expr;
76 
80  double volume;
81  int volume_i;
82  int channels;
83  int planes;
85 
86  void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples,
87  int volume);
90 
92 
93 #endif /* AVFILTER_VOLUME_H */
PRECISION_FIXED
@ PRECISION_FIXED
Definition: af_volume.h:34
REPLAYGAIN_ALBUM
@ REPLAYGAIN_ALBUM
Definition: af_volume.h:65
opt.h
PrecisionType
PrecisionType
Definition: af_volume.h:33
VolumeContext::planes
int planes
Definition: af_volume.h:83
VolumeContext
Definition: af_volume.h:68
VAR_NB_CONSUMED_SAMPLES
@ VAR_NB_CONSUMED_SAMPLES
Definition: af_volume.h:48
VolumeVarName
VolumeVarName
Definition: af_volume.h:45
VAR_POS
@ VAR_POS
Definition: af_volume.h:50
REPLAYGAIN_DROP
@ REPLAYGAIN_DROP
Definition: af_volume.h:62
VAR_TB
@ VAR_TB
Definition: af_volume.h:56
VolumeContext::volume_pexpr
AVExpr * volume_pexpr
Definition: af_volume.h:74
VolumeContext::replaygain_noclip
int replaygain_noclip
Definition: af_volume.h:79
samplefmt.h
VAR_NB_CHANNELS
@ VAR_NB_CHANNELS
Definition: af_volume.h:47
VolumeContext::eval_mode
int eval_mode
Definition: af_volume.h:72
VolumeContext::channels
int channels
Definition: af_volume.h:82
VAR_PTS
@ VAR_PTS
Definition: af_volume.h:51
ReplayGainType
ReplayGainType
Definition: af_volume.h:61
VAR_VARS_NB
@ VAR_VARS_NB
Definition: af_volume.h:58
AVExpr
Definition: eval.c:157
PRECISION_DOUBLE
@ PRECISION_DOUBLE
Definition: af_volume.h:36
VAR_VOLUME
@ VAR_VOLUME
Definition: af_volume.h:57
VolumeContext::volume_expr
const char * volume_expr
Definition: af_volume.h:73
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
src
#define src
Definition: vp8dsp.c:255
VolumeContext::var_values
double var_values[VAR_VARS_NB]
Definition: af_volume.h:75
VolumeContext::volume_i
int volume_i
Definition: af_volume.h:81
float_dsp.h
VolumeContext::replaygain_preamp
double replaygain_preamp
Definition: af_volume.h:78
eval.h
VolumeContext::replaygain
int replaygain
Definition: af_volume.h:77
REPLAYGAIN_IGNORE
@ REPLAYGAIN_IGNORE
Definition: af_volume.h:63
VAR_NB_SAMPLES
@ VAR_NB_SAMPLES
Definition: af_volume.h:49
AVFloatDSPContext
Definition: float_dsp.h:24
VolumeContext::samples_align
int samples_align
Definition: af_volume.h:88
VolumeContext::scale_samples
void(* scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples, int volume)
Definition: af_volume.h:86
VolumeContext::volume
double volume
Definition: af_volume.h:80
VAR_STARTT
@ VAR_STARTT
Definition: af_volume.h:54
common.h
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
EvalMode
EvalMode
Definition: af_volume.h:39
VAR_N
@ VAR_N
Definition: af_volume.h:46
EVAL_MODE_ONCE
@ EVAL_MODE_ONCE
Definition: af_volume.h:40
EVAL_MODE_NB
@ EVAL_MODE_NB
Definition: af_volume.h:42
VAR_STARTPTS
@ VAR_STARTPTS
Definition: af_volume.h:53
EVAL_MODE_FRAME
@ EVAL_MODE_FRAME
Definition: af_volume.h:41
VolumeContext::precision
int precision
Definition: af_volume.h:71
ff_volume_init_x86
void ff_volume_init_x86(VolumeContext *vol)
Definition: af_volume_init.c:36
VolumeContext::fdsp
AVFloatDSPContext * fdsp
Definition: af_volume.h:70
VolumeContext::sample_fmt
enum AVSampleFormat sample_fmt
Definition: af_volume.h:84
PRECISION_FLOAT
@ PRECISION_FLOAT
Definition: af_volume.h:35
VAR_T
@ VAR_T
Definition: af_volume.h:55
VAR_SAMPLE_RATE
@ VAR_SAMPLE_RATE
Definition: af_volume.h:52
REPLAYGAIN_TRACK
@ REPLAYGAIN_TRACK
Definition: af_volume.h:64