af_bs2b.c File Reference

Bauer stereo-to-binaural filter. More...

#include <bs2b.h>
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	Bs2bContext

Macros
#define	OFFSET(x)   offsetof(Bs2bContext, x)
#define	A   AV_OPT_FLAG_AUDIO_PARAM

Functions
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *frame)
static int	config_output (AVFilterLink *outlink)

Variables
static const AVOption	options []
static const AVClass	bs2b_class
static const AVFilterPad	bs2b_inputs []
static const AVFilterPad	bs2b_outputs []
AVFilter	ff_af_bs2b

Detailed Description

Bauer stereo-to-binaural filter.

Definition in file af_bs2b.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(Bs2bContext, x)

Definition at line 47 of file af_bs2b.c.

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 48 of file af_bs2b.c.

Function Documentation

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 70 of file af_bs2b.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 88 of file af_bs2b.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 96 of file af_bs2b.c.

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

static

Definition at line 130 of file af_bs2b.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 161 of file af_bs2b.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "profile", "Apply a pre-defined crossfeed level",
            OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = BS2B_DEFAULT_CLEVEL }, 0, INT_MAX, A, "profile" },
        { "default", "default profile", 0, AV_OPT_TYPE_CONST, { .i64 = BS2B_DEFAULT_CLEVEL }, 0, 0, A, "profile" },
        { "cmoy",    "Chu Moy circuit", 0, AV_OPT_TYPE_CONST, { .i64 = BS2B_CMOY_CLEVEL    }, 0, 0, A, "profile" },
        { "jmeier",  "Jan Meier circuit", 0, AV_OPT_TYPE_CONST, { .i64 = BS2B_JMEIER_CLEVEL  }, 0, 0, A, "profile" },
    { "fcut", "Set cut frequency (in Hz)",
            OFFSET(fcut), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BS2B_MAXFCUT, A },
    { "feed", "Set feed level (in Hz)",
            OFFSET(feed), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BS2B_MAXFEED, A },
    { NULL },
}

Definition at line 50 of file af_bs2b.c.

const AVClass bs2b_class

static

Initial value:

= {
    .class_name = "bs2b filter",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 63 of file af_bs2b.c.

const AVFilterPad bs2b_inputs[]

static

Initial value:

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

Definition at line 197 of file af_bs2b.c.

const AVFilterPad bs2b_outputs[]

static

Initial value:

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

Definition at line 206 of file af_bs2b.c.

AVFilter ff_af_bs2b

Initial value:

= {
    .name           = "bs2b",
    .description    = NULL_IF_CONFIG_SMALL("Bauer stereo-to-binaural filter."),
    .query_formats  = query_formats,
    .priv_size      = sizeof(Bs2bContext),
    .priv_class     = &bs2b_class,
    .init           = init,
    .uninit         = uninit,
    .inputs         = bs2b_inputs,
    .outputs        = bs2b_outputs,
}

Definition at line 215 of file af_bs2b.c.