asrc_hilbert.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "internal.h"
#include "filters.h"
#include "window_func.h"

Go to the source code of this file.

Data Structures
struct	HilbertContext

Macros
#define	OFFSET(x)   offsetof(HilbertContext, x)
#define	FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (hilbert)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static av_cold int	query_formats (AVFilterContext *ctx)
static av_cold int	config_props (AVFilterLink *outlink)
static int	activate (AVFilterContext *ctx)

Variables
static const AVOption	hilbert_options []
static const AVFilterPad	hilbert_outputs []
const AVFilter	ff_asrc_hilbert

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(HilbertContext, x)

Definition at line 41 of file asrc_hilbert.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 42 of file asrc_hilbert.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

hilbert

)

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 58 of file asrc_hilbert.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 70 of file asrc_hilbert.c.

query_formats()

static av_cold int query_formats ( AVFilterContext *  ctx )

static

Definition at line 77 of file asrc_hilbert.c.

config_props()

static av_cold int config_props ( AVFilterLink *  outlink )

static

Definition at line 97 of file asrc_hilbert.c.

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 127 of file asrc_hilbert.c.

Variable Documentation

hilbert_options

const AVOption hilbert_options[]

static

Initial value:

= {
    { "sample_rate", "set sample rate",    OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100},  1, INT_MAX,    FLAGS },
    { "r",           "set sample rate",    OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100},  1, INT_MAX,    FLAGS },
    { "taps",        "set number of taps", OFFSET(nb_taps),     AV_OPT_TYPE_INT, {.i64=22051}, 11, UINT16_MAX, FLAGS },
    { "t",           "set number of taps", OFFSET(nb_taps),     AV_OPT_TYPE_INT, {.i64=22051}, 11, UINT16_MAX, FLAGS },
    { "nb_samples",  "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, FLAGS },
    { "n",           "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, FLAGS },
    WIN_FUNC_OPTION("win_func", OFFSET(win_func), FLAGS, WFUNC_BLACKMAN),
    WIN_FUNC_OPTION("w",        OFFSET(win_func), FLAGS, WFUNC_BLACKMAN),
    {NULL}
}

Definition at line 44 of file asrc_hilbert.c.

hilbert_outputs

const AVFilterPad hilbert_outputs[]

static

Initial value:

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

Definition at line 153 of file asrc_hilbert.c.

ff_asrc_hilbert

const AVFilter ff_asrc_hilbert

Initial value:

= {
    .name          = "hilbert",
    .description   = NULL_IF_CONFIG_SMALL("Generate a Hilbert transform FIR coefficients."),
    .init          = init,
    .uninit        = uninit,
    .activate      = activate,
    .priv_size     = sizeof(HilbertContext),
    .inputs        = NULL,
    FILTER_OUTPUTS(hilbert_outputs),
    FILTER_QUERY_FUNC(query_formats),
    .priv_class    = &hilbert_class,
}

Definition at line 161 of file asrc_hilbert.c.