FFmpeg
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audio volume filter More...
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/float_dsp.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/replaygain.h"
#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "af_volume.h"
Go to the source code of this file.
Macros | |
#define | OFFSET(x) offsetof(VolumeContext, x) |
#define | A AV_OPT_FLAG_AUDIO_PARAM |
#define | F AV_OPT_FLAG_FILTERING_PARAM |
#define | D2TS(d) (isnan(d) ? AV_NOPTS_VALUE : (int64_t)(d)) |
#define | TS2D(ts) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)) |
#define | TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)*av_q2d(tb)) |
Functions | |
AVFILTER_DEFINE_CLASS (volume) | |
static int | set_expr (AVExpr **pexpr, const char *expr, void *log_ctx) |
static av_cold int | init (AVFilterContext *ctx) |
static av_cold void | uninit (AVFilterContext *ctx) |
static int | query_formats (AVFilterContext *ctx) |
static void | scale_samples_u8 (uint8_t *dst, const uint8_t *src, int nb_samples, int volume) |
static void | scale_samples_u8_small (uint8_t *dst, const uint8_t *src, int nb_samples, int volume) |
static void | scale_samples_s16 (uint8_t *dst, const uint8_t *src, int nb_samples, int volume) |
static void | scale_samples_s16_small (uint8_t *dst, const uint8_t *src, int nb_samples, int volume) |
static void | scale_samples_s32 (uint8_t *dst, const uint8_t *src, int nb_samples, int volume) |
static av_cold void | volume_init (VolumeContext *vol) |
static int | set_volume (AVFilterContext *ctx) |
static int | config_output (AVFilterLink *outlink) |
static int | process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags) |
static int | filter_frame (AVFilterLink *inlink, AVFrame *buf) |
Variables | |
static const char *const | precision_str [] |
static const char *const | var_names [] |
static const AVOption | volume_options [] |
static const AVFilterPad | avfilter_af_volume_inputs [] |
static const AVFilterPad | avfilter_af_volume_outputs [] |
AVFilter | ff_af_volume |
audio volume filter
Definition in file af_volume.c.
#define OFFSET | ( | x | ) | offsetof(VolumeContext, x) |
Definition at line 61 of file af_volume.c.
#define A AV_OPT_FLAG_AUDIO_PARAM |
Definition at line 62 of file af_volume.c.
#define F AV_OPT_FLAG_FILTERING_PARAM |
Definition at line 63 of file af_volume.c.
#define D2TS | ( | d | ) | (isnan(d) ? AV_NOPTS_VALUE : (int64_t)(d)) |
Definition at line 333 of file af_volume.c.
#define TS2D | ( | ts | ) | ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)) |
Definition at line 334 of file af_volume.c.
Referenced by filter_frame().
#define TS2T | ( | ts, | |
tb | |||
) | ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)*av_q2d(tb)) |
Definition at line 335 of file af_volume.c.
Referenced by filter_frame().
AVFILTER_DEFINE_CLASS | ( | volume | ) |
Definition at line 91 of file af_volume.c.
Referenced by init(), and process_command().
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Definition at line 111 of file af_volume.c.
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Definition at line 122 of file af_volume.c.
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Definition at line 130 of file af_volume.c.
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inlinestatic |
Definition at line 175 of file af_volume.c.
Referenced by volume_init().
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inlinestatic |
Definition at line 183 of file af_volume.c.
Referenced by volume_init().
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inlinestatic |
Definition at line 191 of file af_volume.c.
Referenced by volume_init().
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inlinestatic |
Definition at line 201 of file af_volume.c.
Referenced by volume_init().
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inlinestatic |
Definition at line 211 of file af_volume.c.
Referenced by volume_init().
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Definition at line 221 of file af_volume.c.
Referenced by filter_frame(), and set_volume().
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Definition at line 253 of file af_volume.c.
Referenced by config_output(), filter_frame(), and process_command().
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Definition at line 285 of file af_volume.c.
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Definition at line 317 of file af_volume.c.
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Definition at line 337 of file af_volume.c.
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Definition at line 41 of file af_volume.c.
Referenced by set_volume().
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Definition at line 45 of file af_volume.c.
Referenced by set_expr().
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Definition at line 65 of file af_volume.c.
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Definition at line 458 of file af_volume.c.
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Definition at line 467 of file af_volume.c.
AVFilter ff_af_volume |
Definition at line 476 of file af_volume.c.