af_aiir.c File Reference

#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/avstring.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	ThreadData
struct	Pair
struct	BiquadContext
struct	IIRChannel
struct	AudioIIRContext

Macros
#define	IIR_CH(name, type, min, max, need_clipping)
#define	SERIAL_IIR_CH(name, type, min, max, need_clipping)
#define	OFFSET(x)   offsetof(AudioIIRContext, x)
#define	AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
static int	query_formats (AVFilterContext *ctx)
static void	count_coefficients (char *item_str, int *nb_items)
static int	read_gains (AVFilterContext *ctx, char *item_str, int nb_items)
static int	read_tf_coefficients (AVFilterContext *ctx, char *item_str, int nb_items, double *dst)
static int	read_zp_coefficients (AVFilterContext *ctx, char *item_str, int nb_items, double *dst, const char *format)
static int	read_channels (AVFilterContext *ctx, int channels, uint8_t *item_str, int ab)
static void	multiply (double wre, double wim, int npz, double *coeffs)
static int	expand (AVFilterContext *ctx, double *pz, int nb, double *coeffs)
static int	convert_zp2tf (AVFilterContext *ctx, int channels)
static int	decompose_zp2biquads (AVFilterContext *ctx, int channels)
static void	convert_pr2zp (AVFilterContext *ctx, int channels)
static void	convert_pd2zp (AVFilterContext *ctx, int channels)
static int	config_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (aiir)

Variables
static const char *	format [] = { "%lf", "%lf %lfi", "%lf %lfr", "%lf %lfd" }
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
static const AVOption	aiir_options []
AVFilter	ff_af_aiir

Macro Definition Documentation

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

Definition at line 101 of file af_aiir.c.

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

Definition at line 154 of file af_aiir.c.

#define OFFSET

(

x

)

offsetof(AudioIIRContext, x)

Definition at line 811 of file af_aiir.c.

#define AF   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 812 of file af_aiir.c.

Function Documentation

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 69 of file af_aiir.c.

static void count_coefficients ( char *  item_str, int *  nb_items  )

static

Definition at line 214 of file af_aiir.c.

Referenced by read_channels().

static int read_gains ( AVFilterContext *  ctx, char *  item_str, int  nb_items  )

static

Definition at line 228 of file af_aiir.c.

Referenced by config_output().

static int read_tf_coefficients ( AVFilterContext *  ctx, char *  item_str, int  nb_items, double *  dst  )

static

Definition at line 261 of file af_aiir.c.

Referenced by read_channels().

static int read_zp_coefficients ( AVFilterContext *  ctx, char *  item_str, int  nb_items, double *  dst, const char *  format  )

static

Definition at line 286 of file af_aiir.c.

Referenced by read_channels().

static int read_channels ( AVFilterContext *  ctx, int  channels, uint8_t *  item_str, int  ab  )

static

Definition at line 313 of file af_aiir.c.

Referenced by config_output().

static void multiply ( double  wre, double  wim, int  npz, double *  coeffs  )

static

Definition at line 360 of file af_aiir.c.

Referenced by expand().

static int expand ( AVFilterContext *  ctx, double *  pz, int  nb, double *  coeffs  )

static

Definition at line 380 of file af_aiir.c.

Referenced by convert_zp2tf(), and decompose_zp2biquads().

static int convert_zp2tf ( AVFilterContext *  ctx, int  channels  )

static

Definition at line 406 of file af_aiir.c.

Referenced by config_output().

static int decompose_zp2biquads ( AVFilterContext *  ctx, int  channels  )

static

Definition at line 452 of file af_aiir.c.

Referenced by config_output().

static void convert_pr2zp ( AVFilterContext *  ctx, int  channels  )

static

Definition at line 591 of file af_aiir.c.

Referenced by config_output().

static void convert_pd2zp ( AVFilterContext *  ctx, int  channels  )

static

Definition at line 618 of file af_aiir.c.

Referenced by config_output().

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 645 of file af_aiir.c.

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 718 of file af_aiir.c.

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 755 of file af_aiir.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 775 of file af_aiir.c.

AVFILTER_DEFINE_CLASS

(

aiir

)

Variable Documentation

const char* format[] = { "%lf", "%lf %lfi", "%lf %lfr", "%lf %lfd" }

static

Definition at line 311 of file af_aiir.c.

Referenced by alloc_frame_empty(), cdxl_read_packet(), compute_vmaf_score(), config_output(), config_props(), configure_output_audio_filter(), configure_video_device(), convert_axis_pixel_format(), decode_frame(), dnxhd_decode_frame(), dxva_list_guids_debug(), ff_alsa_open(), ff_AMediaCodecList_getCodecNameByType(), ff_AMediaFormat_new(), ff_AMediaFormat_newFromObject(), ff_draw_init(), ff_flv_decode_picture_header(), ff_flv_encode_picture_header(), ff_frame_pool_audio_init(), ff_frame_pool_get(), ff_frame_pool_video_init(), ff_h261_encode_picture_header(), ff_h263_decode_picture_header(), ff_h263_encode_picture_header(), ff_intel_h263_decode_picture_header(), ff_mediacodec_dec_receive(), ff_mov_read_stsd_entries(), ffat_update_ctx(), filter_color(), filter_color2(), filter_mono(), flac_decode_init(), fsb_read_header(), h261_decode_picture_header(), import_pem(), init(), magy_decode_frame(), match_video_size(), mediacodec_dec_parse_format(), mkv_write_stereo_mode(), mov_codec_id(), mov_parse_stsd_data(), mov_read_frma(), nist_read_header(), open_slave(), print_link_prop(), query_formats(), realloc_texture(), resample_init(), sdl2_write_header(), swap_sample_fmts_on_filter(), vaapi_decode_find_best_format(), vt_map_frame(), and yae_reset().

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .filter_frame = filter_frame,
    },
    { NULL }
}

Definition at line 793 of file af_aiir.c.

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 802 of file af_aiir.c.

const AVOption aiir_options[]

static

Initial value:

= {
    { "z", "set B/numerator/zeros coefficients",   OFFSET(b_str),    AV_OPT_TYPE_STRING, {.str="1+0i 1-0i"}, 0, 0, AF },
    { "p", "set A/denominator/poles coefficients", OFFSET(a_str),    AV_OPT_TYPE_STRING, {.str="1+0i 1-0i"}, 0, 0, AF },
    { "k", "set channels gains",                   OFFSET(g_str),    AV_OPT_TYPE_STRING, {.str="1|1"}, 0, 0, AF },
    { "dry", "set dry gain",                       OFFSET(dry_gain), AV_OPT_TYPE_DOUBLE, {.dbl=1},     0, 1, AF },
    { "wet", "set wet gain",                       OFFSET(wet_gain), AV_OPT_TYPE_DOUBLE, {.dbl=1},     0, 1, AF },
    { "f", "set coefficients format",              OFFSET(format),   AV_OPT_TYPE_INT,    {.i64=1},     0, 3, AF, "format" },
    { "tf", "transfer function",                   0,                AV_OPT_TYPE_CONST,  {.i64=0},     0, 0, AF, "format" },
    { "zp", "Z-plane zeros/poles",                 0,                AV_OPT_TYPE_CONST,  {.i64=1},     0, 0, AF, "format" },
    { "pr", "Z-plane zeros/poles (polar radians)", 0,                AV_OPT_TYPE_CONST,  {.i64=2},     0, 0, AF, "format" },
    { "pd", "Z-plane zeros/poles (polar degrees)", 0,                AV_OPT_TYPE_CONST,  {.i64=3},     0, 0, AF, "format" },
    { "r", "set kind of processing",               OFFSET(process),  AV_OPT_TYPE_INT,    {.i64=1},     0, 1, AF, "process" },
    { "d", "direct",                               0,                AV_OPT_TYPE_CONST,  {.i64=0},     0, 0, AF, "process" },
    { "s", "serial cascading",                     0,                AV_OPT_TYPE_CONST,  {.i64=1},     0, 0, AF, "process" },
    { "e", "set precision",                        OFFSET(precision),AV_OPT_TYPE_INT,    {.i64=0},     0, 3, AF, "precision" },
    { "dbl", "double-precision floating-point",    0,                AV_OPT_TYPE_CONST,  {.i64=0},     0, 0, AF, "precision" },
    { "flt", "single-precision floating-point",    0,                AV_OPT_TYPE_CONST,  {.i64=1},     0, 0, AF, "precision" },
    { "i32", "32-bit integers",                    0,                AV_OPT_TYPE_CONST,  {.i64=2},     0, 0, AF, "precision" },
    { "i16", "16-bit integers",                    0,                AV_OPT_TYPE_CONST,  {.i64=3},     0, 0, AF, "precision" },
    { NULL },
}

Definition at line 814 of file af_aiir.c.

AVFilter ff_af_aiir

Initial value:

= {
    .name          = "aiir",
    .description   = NULL_IF_CONFIG_SMALL("Apply Infinite Impulse Response filter with supplied coefficients."),
    .priv_size     = sizeof(AudioIIRContext),
    .priv_class    = &aiir_class,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = inputs,
    .outputs       = outputs,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 838 of file af_aiir.c.