af_volumedetect.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/avassert.h"
#include "audio.h"
#include "avfilter.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	VolDetectContext

Macros
#define	MAX_DB   91

Functions
static int	query_formats (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFilterBufferRef *samples)
static double	logdb (uint64_t v)
static void	print_stats (AVFilterContext *ctx)
static void	uninit (AVFilterContext *ctx)

Variables
static const AVFilterPad	volumedetect_inputs []
static const AVFilterPad	volumedetect_outputs []
AVFilter	avfilter_af_volumedetect

Macro Definition Documentation

#define MAX_DB   91

Definition at line 76 of file af_volumedetect.c.

Referenced by logdb(), and print_stats().

Function Documentation

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 36 of file af_volumedetect.c.

static int filter_frame ( AVFilterLink *  inlink, AVFilterBufferRef *  samples  )

static

Definition at line 52 of file af_volumedetect.c.

static double logdb ( uint64_t  v )

inlinestatic

Definition at line 78 of file af_volumedetect.c.

Referenced by print_stats().

static void print_stats ( AVFilterContext *  ctx )

static

Definition at line 86 of file af_volumedetect.c.

static void uninit ( AVFilterContext *  ctx )

static

Definition at line 129 of file af_volumedetect.c.

Variable Documentation

const AVFilterPad volumedetect_inputs[]

static

Initial value:

= {
    {
        .name             = "default",
        .type             = AVMEDIA_TYPE_AUDIO,
        .get_audio_buffer = ff_null_get_audio_buffer,
        .filter_frame     = filter_frame,
        .min_perms        = AV_PERM_READ,
    },
    { NULL }
}

Definition at line 134 of file af_volumedetect.c.

const AVFilterPad volumedetect_outputs[]

static

Initial value:

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

Definition at line 145 of file af_volumedetect.c.

AVFilter avfilter_af_volumedetect

Initial value:

= {
    .name          = "volumedetect",
    .description   = NULL_IF_CONFIG_SMALL("Detect audio volume."),

    .priv_size     = sizeof(VolDetectContext),
    .query_formats = query_formats,
    .uninit        = uninit,
    .inputs        = volumedetect_inputs,
    .outputs       = volumedetect_outputs,
}

Definition at line 153 of file af_volumedetect.c.