af_acrossover.c File Reference

Crossover filter. More...

#include "libavutil/attributes.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/eval.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"

Classes
struct	BiquadContext
struct	CrossoverChannel
struct	AudioCrossoverContext

Macros
#define	MAX_SPLITS   16
#define	MAX_BANDS   MAX_SPLITS + 1
#define	OFFSET(x)   offsetof(AudioCrossoverContext, x)
#define	AF   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Typedefs
typedef struct BiquadContext	BiquadContext
typedef struct CrossoverChannel	CrossoverChannel
typedef struct AudioCrossoverContext	AudioCrossoverContext

Functions
	AVFILTER_DEFINE_CLASS (acrossover)

Variables
AVFilter	ff_af_acrossover

Detailed Description

Crossover filter.

Split an audio stream into several bands.

Variable Documentation

ff_af_acrossover

AVFilter ff_af_acrossover

Initial value:

= {
    .name           = "acrossover",
    .description    = NULL_IF_CONFIG_SMALL("Split audio into per-bands streams."),
    .priv_size      = sizeof(AudioCrossoverContext),
    .priv_class     = &acrossover_class,
    .init           = init,
    .uninit         = uninit,
    .query_formats  = query_formats,
    .inputs         = inputs,
    .outputs        = NULL,
    .flags          = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
}