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af_aresample.c File Reference

resampling audio filter More...

#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/samplefmt.h"
#include "libavutil/avassert.h"
#include "libswresample/swresample.h"
#include "avfilter.h"
#include "audio.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  AResampleContext
 

Macros

#define OFFSET(x)   offsetof(AResampleContext, x)
 
#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 

Functions

static av_cold int init_dict (AVFilterContext *ctx, AVDictionary **opts)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_output (AVFilterLink *outlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *insamplesref)
 
static int flush_frame (AVFilterLink *outlink, int final, AVFrame **outsamplesref_ret)
 
static int request_frame (AVFilterLink *outlink)
 
static const AVClassresample_child_class_next (const AVClass *prev)
 
static voidresample_child_next (void *obj, void *prev)
 

Variables

static const AVOption options []
 
static const AVClass aresample_class
 
static const AVFilterPad aresample_inputs []
 
static const AVFilterPad aresample_outputs []
 
AVFilter ff_af_aresample
 

Detailed Description

resampling audio filter

Definition in file af_aresample.c.

Macro Definition Documentation

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

Definition at line 307 of file af_aresample.c.

Definition at line 308 of file af_aresample.c.

Function Documentation

static av_cold int init_dict ( AVFilterContext ctx,
AVDictionary **  opts 
)
static

Definition at line 46 of file af_aresample.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 73 of file af_aresample.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 79 of file af_aresample.c.

static int config_output ( AVFilterLink outlink)
static

Definition at line 137 of file af_aresample.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame insamplesref 
)
static

Definition at line 182 of file af_aresample.c.

static int flush_frame ( AVFilterLink outlink,
int  final,
AVFrame **  outsamplesref_ret 
)
static

Definition at line 234 of file af_aresample.c.

Referenced by request_frame().

static int request_frame ( AVFilterLink outlink)
static

Definition at line 265 of file af_aresample.c.

static const AVClass* resample_child_class_next ( const AVClass prev)
static

Definition at line 296 of file af_aresample.c.

static void* resample_child_next ( void obj,
void prev 
)
static

Definition at line 301 of file af_aresample.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{"sample_rate", NULL, OFFSET(sample_rate_arg), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
{NULL}
}
#define NULL
Definition: coverity.c:32
#define FLAGS
Definition: af_aresample.c:308
#define OFFSET(x)
Definition: af_aresample.c:307

Definition at line 310 of file af_aresample.c.

const AVClass aresample_class
static
Initial value:
= {
.class_name = "aresample",
.item_name = av_default_item_name,
.option = options,
.child_class_next = resample_child_class_next,
}
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
static const AVOption options[]
Definition: af_aresample.c:310
static void * resample_child_next(void *obj, void *prev)
Definition: af_aresample.c:301
static const AVClass * resample_child_class_next(const AVClass *prev)
Definition: af_aresample.c:296
void *(* child_next)(void *obj, void *prev)
Return next AVOptions-enabled child or NULL.
Definition: log.h:113

Definition at line 315 of file af_aresample.c.

const AVFilterPad aresample_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *insamplesref)
Definition: af_aresample.c:182

Definition at line 324 of file af_aresample.c.

const AVFilterPad aresample_outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int request_frame(AVFilterLink *outlink)
Definition: af_aresample.c:265
static int config_output(AVFilterLink *outlink)
Definition: af_aresample.c:137

Definition at line 333 of file af_aresample.c.

AVFilter ff_af_aresample
Initial value:
= {
.name = "aresample",
.description = NULL_IF_CONFIG_SMALL("Resample audio data."),
.init_dict = init_dict,
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(AResampleContext),
.priv_class = &aresample_class,
}
static const AVFilterPad aresample_inputs[]
Definition: af_aresample.c:324
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static const AVClass aresample_class
Definition: af_aresample.c:315
static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
Definition: af_aresample.c:46
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_aresample.c:73
static const AVFilterPad aresample_outputs[]
Definition: af_aresample.c:333
static int query_formats(AVFilterContext *ctx)
Definition: af_aresample.c:79

Definition at line 343 of file af_aresample.c.