af_crossfeed.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/ffmath.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "formats.h"

Go to the source code of this file.

Data Structures
struct	CrossfeedContext

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

Functions
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
	AVFILTER_DEFINE_CLASS (crossfeed)

Variables
static const AVOption	crossfeed_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_af_crossfeed

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(CrossfeedContext, x)

Definition at line 149 of file af_crossfeed.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 150 of file af_crossfeed.c.

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 42 of file af_crossfeed.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 58 of file af_crossfeed.c.

Referenced by process_command().

filter_frame()

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

static

Definition at line 84 of file af_crossfeed.c.

process_command()

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

static

Definition at line 137 of file af_crossfeed.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

crossfeed

)

Variable Documentation

crossfeed_options

const AVOption crossfeed_options[]

static

Initial value:

= {
    { "strength",  "set crossfeed strength",  OFFSET(strength),  AV_OPT_TYPE_DOUBLE, {.dbl=.2}, 0, 1, FLAGS },
    { "range",     "set soundstage wideness", OFFSET(range),     AV_OPT_TYPE_DOUBLE, {.dbl=.5}, 0, 1, FLAGS },
    { "slope",     "set curve slope",         OFFSET(slope),     AV_OPT_TYPE_DOUBLE, {.dbl=.5}, .01, 1, FLAGS },
    { "level_in",  "set level in",            OFFSET(level_in),  AV_OPT_TYPE_DOUBLE, {.dbl=.9}, 0, 1, FLAGS },
    { "level_out", "set level out",           OFFSET(level_out), AV_OPT_TYPE_DOUBLE, {.dbl=1.}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 152 of file af_crossfeed.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 163 of file af_crossfeed.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 173 of file af_crossfeed.c.

ff_af_crossfeed

AVFilter ff_af_crossfeed

Initial value:

= {
    .name           = "crossfeed",
    .description    = NULL_IF_CONFIG_SMALL("Apply headphone crossfeed filter."),
    .query_formats  = query_formats,
    .priv_size      = sizeof(CrossfeedContext),
    .priv_class     = &crossfeed_class,
    .inputs         = inputs,
    .outputs        = outputs,
    .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
    .process_command = process_command,
}

Definition at line 181 of file af_crossfeed.c.