af_apad.c File Reference

audio pad filter. More...

#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/samplefmt.h"
#include "libavutil/avassert.h"
#include "avfilter.h"
#include "audio.h"
#include "internal.h"
Include dependency graph for af_apad.c:

Go to the source code of this file.

Data Structures

struct  APadContext
 

Macros

#define OFFSET(x)   offsetof(APadContext, x)
 
#define A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 

Functions

 AVFILTER_DEFINE_CLASS (apad)
 
static av_cold int init (AVFilterContext *ctx)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *frame)
 
static int request_frame (AVFilterLink *outlink)
 

Variables

static const AVOption apad_options []
 
static const AVFilterPad apad_inputs []
 
static const AVFilterPad apad_outputs []
 
AVFilter avfilter_af_apad
 

Detailed Description

audio pad filter.

Based on af_aresample.c

Definition in file af_apad.c.

Macro Definition Documentation

Definition at line 48 of file af_apad.c.

#define OFFSET (   x)    offsetof(APadContext, x)

Definition at line 47 of file af_apad.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( apad  )
static int filter_frame ( AVFilterLink inlink,
AVFrame frame 
)
static

Definition at line 72 of file af_apad.c.

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 59 of file af_apad.c.

static int request_frame ( AVFilterLink outlink)
static

Definition at line 84 of file af_apad.c.

Variable Documentation

const AVFilterPad apad_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL },
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: af_apad.c:72
NULL
Definition: eval.c:55

Definition at line 129 of file af_apad.c.

const AVOption apad_options[]
static
Initial value:
= {
{ "packet_size", "set silence packet size", OFFSET(packet_size), AV_OPT_TYPE_INT, { .i64 = 4096 }, 0, INT_MAX, A },
{ "pad_len", "number of samples of silence to add", OFFSET(pad_len), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, A },
{ "whole_len", "target number of samples in the audio stream", OFFSET(whole_len), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, A },
{ NULL },
}
#define OFFSET(x)
Definition: af_apad.c:47
#define A
Definition: af_apad.c:48
NULL
Definition: eval.c:55

Definition at line 50 of file af_apad.c.

const AVFilterPad apad_outputs[]
static
Initial value:
= {
{
.name = "default",
.request_frame = request_frame,
},
{ NULL },
}
static int request_frame(AVFilterLink *outlink)
Definition: af_apad.c:84
NULL
Definition: eval.c:55

Definition at line 138 of file af_apad.c.

AVFilter avfilter_af_apad
Initial value:
= {
.name = "apad",
.description = NULL_IF_CONFIG_SMALL("Pad audio with silence."),
.init = init,
.priv_size = sizeof(APadContext),
.priv_class = &apad_class,
}
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:117
static const AVFilterPad apad_inputs[]
Definition: af_apad.c:129
static const AVFilterPad apad_outputs[]
Definition: af_apad.c:138
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_cold int init(AVFilterContext *ctx)
Definition: af_apad.c:59
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs

Definition at line 147 of file af_apad.c.