af_afir.c File Reference

#include <float.h>
#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/float_dsp.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/xga_font_data.h"
#include "libavcodec/avfft.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "internal.h"
#include "af_afir.h"

Go to the source code of this file.

Macros
#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)   offsetof(AudioFIRContext, x)

Functions
static void	fcmul_add_c (float *sum, const float *t, const float *c, ptrdiff_t len)
static void	direct (const float *in, const FFTComplex *ir, int len, float *out)
static void	fir_fadd (AudioFIRContext *s, float *dst, const float *src, int nb_samples)
static int	fir_quantum (AVFilterContext *ctx, AVFrame *out, int ch, int offset)
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 void	drawtext (AVFrame *pic, int x, int y, const char *txt, uint32_t color)
static void	draw_line (AVFrame *out, int x0, int y0, int x1, int y1, uint32_t color)
static void	draw_response (AVFilterContext *ctx, AVFrame *out)
static int	init_segment (AVFilterContext *ctx, AudioFIRSegment *seg, int offset, int nb_partitions, int part_size)
static void	uninit_segment (AVFilterContext *ctx, AudioFIRSegment *seg)
static int	convert_coeffs (AVFilterContext *ctx)
static int	check_ir (AVFilterLink *link)
static int	activate (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)
static int	config_video (AVFilterLink *outlink)
void	ff_afir_init (AudioFIRDSPContext *dsp)
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 []
AVFilter	ff_af_afir

Detailed Description

An arbitrary audio FIR filter

Definition in file af_afir.c.

Macro Definition Documentation

AF

#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 919 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 920 of file af_afir.c.

VF

#define VF   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 921 of file af_afir.c.

OFFSET

#define OFFSET

(

x

)

offsetof(AudioFIRContext, x)

Definition at line 922 of file af_afir.c.

Function Documentation

fcmul_add_c()

static void fcmul_add_c ( float *  sum, const float *  t, const float *  c, ptrdiff_t  len  )

static

Definition at line 43 of file af_afir.c.

Referenced by ff_afir_init().

direct()

static void direct ( const float *  in, const FFTComplex *  ir, int  len, float *  out  )

static

Definition at line 60 of file af_afir.c.

Referenced by apply_delogo(), blur_image(), do_denoise(), ff_vc1_pred_b_mv(), filter_frame(), filter_slice_packed(), filter_slice_planar(), fir_quantum(), get_flags(), load_input_picture(), vc1_b_mc(), vc1_decode_b_mb(), and vc1_decode_b_mb_intfr().

fir_fadd()

static void fir_fadd ( AudioFIRContext *  s, float *  dst, const float *  src, int  nb_samples  )

static

Definition at line 67 of file af_afir.c.

Referenced by fir_quantum().

fir_quantum()

static int fir_quantum ( AVFilterContext *  ctx, AVFrame *  out, int  ch, int  offset  )

static

Definition at line 77 of file af_afir.c.

Referenced by fir_channel().

fir_channel()

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

static

Definition at line 189 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 200 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 213 of file af_afir.c.

Referenced by activate().

drawtext()

static void drawtext ( AVFrame *  pic, int  x, int  y, const char *  txt, uint32_t  color  )

static

Definition at line 240 of file af_afir.c.

Referenced by draw_response().

draw_line()

static void draw_line ( AVFrame *  out, int  x0, int  y0, int  x1, int  y1, uint32_t  color  )

static

Definition at line 263 of file af_afir.c.

Referenced by draw_response().

draw_response()

static void draw_response ( AVFilterContext *  ctx, AVFrame *  out  )

static

Definition at line 289 of file af_afir.c.

Referenced by convert_coeffs().

init_segment()

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

static

Definition at line 378 of file af_afir.c.

Referenced by convert_coeffs().

uninit_segment()

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

static

Definition at line 420 of file af_afir.c.

Referenced by uninit().

convert_coeffs()

static int convert_coeffs ( AVFilterContext *  ctx )

static

Definition at line 450 of file af_afir.c.

Referenced by activate().

check_ir()

static int check_ir ( AVFilterLink *  link )

static

Definition at line 611 of file af_afir.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 627 of file af_afir.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 714 of file af_afir.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 769 of file af_afir.c.

Referenced by init().

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 787 of file af_afir.c.

config_video()

static int config_video ( AVFilterLink *  outlink )

static

Definition at line 807 of file af_afir.c.

Referenced by init().

ff_afir_init()

void ff_afir_init

(

AudioFIRDSPContext *

dsp

)

Definition at line 826 of file af_afir.c.

Referenced by checkasm_check_afir(), and init().

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 834 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 896 of file af_afir.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

afir

)

Variable Documentation

afir_options

const AVOption afir_options[]

static

Initial value:

= {
    { "dry",    "set dry gain",      OFFSET(dry_gain),   AV_OPT_TYPE_FLOAT, {.dbl=1},    0, 10, AF },
    { "wet",    "set wet gain",      OFFSET(wet_gain),   AV_OPT_TYPE_FLOAT, {.dbl=1},    0, 10, AF },
    { "length", "set IR length",     OFFSET(length),     AV_OPT_TYPE_FLOAT, {.dbl=1},    0,  1, AF },
    { "gtype",  "set IR auto gain type",OFFSET(gtype),   AV_OPT_TYPE_INT,   {.i64=0},   -1,  2, AF, "gtype" },
    {  "none",  "without auto gain", 0,                  AV_OPT_TYPE_CONST, {.i64=-1},   0,  0, AF, "gtype" },
    {  "peak",  "peak gain",         0,                  AV_OPT_TYPE_CONST, {.i64=0},    0,  0, AF, "gtype" },
    {  "dc",    "DC gain",           0,                  AV_OPT_TYPE_CONST, {.i64=1},    0,  0, AF, "gtype" },
    {  "gn",    "gain to noise",     0,                  AV_OPT_TYPE_CONST, {.i64=2},    0,  0, AF, "gtype" },
    { "irgain", "set IR gain",       OFFSET(ir_gain),    AV_OPT_TYPE_FLOAT, {.dbl=1},    0,  1, AF },
    { "irfmt",  "set IR format",     OFFSET(ir_format),  AV_OPT_TYPE_INT,   {.i64=1},    0,  1, AF, "irfmt" },
    {  "mono",  "single channel",    0,                  AV_OPT_TYPE_CONST, {.i64=0},    0,  0, AF, "irfmt" },
    {  "input", "same as input",     0,                  AV_OPT_TYPE_CONST, {.i64=1},    0,  0, AF, "irfmt" },
    { "maxir",  "set max IR length", OFFSET(max_ir_len), AV_OPT_TYPE_FLOAT, {.dbl=30}, 0.1, 60, AF },
    { "response", "show IR frequency response", OFFSET(response), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, VF },
    { "channel", "set IR channel to display frequency response", OFFSET(ir_channel), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, VF },
    { "size",   "set video size",    OFFSET(w),          AV_OPT_TYPE_IMAGE_SIZE, {.str = "hd720"}, 0, 0, VF },
    { "rate",   "set video rate",    OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT32_MAX, VF },
    { "minp",   "set min partition size", OFFSET(minp),  AV_OPT_TYPE_INT,   {.i64=8192}, 1, 32768, AF },
    { "maxp",   "set max partition size", OFFSET(maxp),  AV_OPT_TYPE_INT,   {.i64=8192}, 8, 32768, AF },
    { "nbirs",  "set number of input IRs",OFFSET(nb_irs),AV_OPT_TYPE_INT,   {.i64=1},    1,    32, AF },
    { "ir",     "select IR",              OFFSET(selir), AV_OPT_TYPE_INT,   {.i64=0},    0,    31, AFR },
    { NULL }
}

Definition at line 924 of file af_afir.c.

ff_af_afir

AVFilter ff_af_afir

Initial value:

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

Definition at line 951 of file af_afir.c.