af_afir.c File Reference

An arbitrary audio FIR filter. More...

#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/cpu.h"
#include "libavutil/mem.h"
#include "libavutil/tx.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/frame.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/rational.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "af_afirdsp.h"
#include "afir_template.c"

Go to the source code of this file.

Data Structures
struct	AudioFIRSegment
struct	AudioFIRContext

Macros
#define	MAX_IR_STREAMS   32
#define	DEPTH   32
#define	DEPTH   64
#define	AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define	AFR   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
#define	VF   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define	OFFSET(x)

Functions
static int	fir_channel (AVFilterContext *ctx, AVFrame *out, int ch)
static int	fir_channels (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	fir_frame (AudioFIRContext *s, AVFrame *in, AVFilterLink *outlink)
static int	init_segment (AVFilterContext *ctx, AudioFIRSegment *seg, int selir, int offset, int nb_partitions, int part_size, int index)
static void	uninit_segment (AVFilterContext *ctx, AudioFIRSegment *seg)
static int	convert_coeffs (AVFilterContext *ctx, int selir)
static int	check_ir (AVFilterLink *link, int selir)
static int	activate (AVFilterContext *ctx)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static int	config_output (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
	AVFILTER_DEFINE_CLASS (afir)

Variables
static const AVOption	afir_options []
static const AVFilterPad	outputs []
const FFFilter	ff_af_afir

Detailed Description

An arbitrary audio FIR filter.

Definition in file af_afir.c.

Macro Definition Documentation

MAX_IR_STREAMS

#define MAX_IR_STREAMS   32

Definition at line 46 of file af_afir.c.

Referenced by uninit_segment().

DEPTH [1/2]

#define DEPTH   32

Definition at line 125 of file af_afir.c.

DEPTH [2/2]

#define DEPTH   64

Definition at line 125 of file af_afir.c.

AF

#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 729 of file af_afir.c.

AFR

#define AFR   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 730 of file af_afir.c.

VF

#define VF   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 731 of file af_afir.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(AudioFIRContext, x)

Definition at line 732 of file af_afir.c.

Function Documentation

fir_channel()

static int fir_channel ( AVFilterContext * ctx, AVFrame * out, int ch )

static

Definition at line 132 of file af_afir.c.

Referenced by fir_channels().

fir_channels()

static int fir_channels ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 156 of file af_afir.c.

Referenced by fir_frame().

fir_frame()

static int fir_frame ( AudioFIRContext * s, AVFrame * in, AVFilterLink * outlink )

static

Definition at line 168 of file af_afir.c.

Referenced by activate().

init_segment()

static int init_segment ( AVFilterContext * ctx, AudioFIRSegment * seg, int selir, int offset, int nb_partitions, int part_size, int index )

static

Definition at line 192 of file af_afir.c.

Referenced by convert_coeffs().

uninit_segment()

static void uninit_segment ( AVFilterContext * ctx, AudioFIRSegment * seg )

static

Definition at line 268 of file af_afir.c.

Referenced by uninit().

convert_coeffs()

static int convert_coeffs ( AVFilterContext * ctx, int selir )

static

Definition at line 307 of file af_afir.c.

Referenced by activate().

check_ir()

static int check_ir ( AVFilterLink * link, int selir )

static

Definition at line 456 of file af_afir.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 475 of file af_afir.c.

query_formats()

static int query_formats ( const AVFilterContext * ctx, AVFilterFormatsConfig ** cfg_in, AVFilterFormatsConfig ** cfg_out )

static

Definition at line 542 of file af_afir.c.

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 579 of file af_afir.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 637 of file af_afir.c.

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 660 of file af_afir.c.

process_command()

static int process_command ( AVFilterContext * ctx, const char * cmd, const char * arg, char * res, int res_len, int flags )

static

Definition at line 703 of file af_afir.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

afir

)

Variable Documentation

afir_options

const AVOption afir_options[]

static

Definition at line 734 of file af_afir.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .config_props = config_output,
    },
}

Definition at line 772 of file af_afir.c.

ff_af_afir

const FFFilter ff_af_afir

Initial value:

= {
    .p.name        = "afir",
    .p.description = NULL_IF_CONFIG_SMALL("Apply Finite Impulse Response filter with supplied coefficients in additional stream(s)."),
    .p.priv_class  = &afir_class,
    .p.flags       = AVFILTER_FLAG_DYNAMIC_INPUTS  |
                     AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                     AVFILTER_FLAG_SLICE_THREADS,
    .priv_size     = sizeof(AudioFIRContext),
    FILTER_QUERY_FUNC2(query_formats),
    FILTER_OUTPUTS(outputs),
    .init          = init,
    .activate      = activate,
    .uninit        = uninit,
    .process_command = process_command,
}

Definition at line 780 of file af_afir.c.