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af_biquads.c File Reference
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  ChanCache
 
struct  BiquadsContext
 

Macros

#define BIQUAD_FILTER(name, type, min, max, need_clipping)
 
#define OFFSET(x)   offsetof(BiquadsContext, x)
 
#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define DEFINE_BIQUAD_FILTER(name_, description_)
 

Enumerations

enum  FilterType {
  biquad, equalizer, bass, treble,
  band, bandpass, bandreject, allpass,
  highpass, lowpass
}
 
enum  WidthType {
  NONE, HERTZ, OCTAVE, QFACTOR,
  SLOPE
}
 

Functions

static av_cold int init (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_output (AVFilterLink *outlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *buf)
 
static av_cold void uninit (AVFilterContext *ctx)
 

Variables

static const AVFilterPad inputs []
 
static const AVFilterPad outputs []
 

Macro Definition Documentation

#define BIQUAD_FILTER (   name,
  type,
  min,
  max,
  need_clipping 
)

Definition at line 167 of file af_biquads.c.

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

Definition at line 447 of file af_biquads.c.

Definition at line 448 of file af_biquads.c.

#define DEFINE_BIQUAD_FILTER (   name_,
  description_ 
)
Value:
static av_cold int name_##_init(AVFilterContext *ctx) \
{ \
BiquadsContext *s = ctx->priv; \
s->class = &name_##_class; \
s->filter_type = name_; \
return init(ctx); \
} \
\
AVFilter ff_af_##name_ = { \
.name = #name_, \
.description = NULL_IF_CONFIG_SMALL(description_), \
.priv_size = sizeof(BiquadsContext), \
.init = name_##_init, \
.uninit = uninit, \
.inputs = inputs, \
.priv_class = &name_##_class, \
}
const char * s
Definition: avisynth_c.h:631
static const AVFilterPad inputs[]
Definition: af_biquads.c:429
#define av_cold
Definition: attributes.h:74
static const AVFilterPad outputs[]
Definition: af_biquads.c:438
static av_cold int init(AVFilterContext *ctx)
Definition: af_biquads.c:119
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
return
static int query_formats(AVFilterContext *ctx)
Definition: af_biquads.c:134
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_biquads.c:422
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:332
An instance of a filter.
Definition: avfilter.h:633

Definition at line 450 of file af_biquads.c.

Enumeration Type Documentation

enum FilterType
Enumerator
biquad 
equalizer 
bass 
treble 
band 
bandpass 
bandreject 
allpass 
highpass 
lowpass 

Definition at line 71 of file af_biquads.c.

enum WidthType
Enumerator
NONE 
HERTZ 
OCTAVE 
QFACTOR 
SLOPE 

Definition at line 84 of file af_biquads.c.

Function Documentation

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 119 of file af_biquads.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 134 of file af_biquads.c.

static int config_output ( AVFilterLink outlink)
static

Definition at line 236 of file af_biquads.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame buf 
)
static

Definition at line 392 of file af_biquads.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 422 of file af_biquads.c.

Variable Documentation

const AVFilterPad inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
Definition: af_biquads.c:392

Definition at line 429 of file af_biquads.c.

const AVFilterPad outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_output,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int config_output(AVFilterLink *outlink)
Definition: af_biquads.c:236

Definition at line 438 of file af_biquads.c.