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	filter_frame (AVFilterLink *inlink, AVFrame *samples)
static double	logdb (uint64_t v)
static void	print_stats (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

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

Macro Definition Documentation

MAX_DB

#define MAX_DB   91

Definition at line 59 of file af_volumedetect.c.

Function Documentation

filter_frame()

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

static

Definition at line 36 of file af_volumedetect.c.

logdb()

static double logdb ( uint64_t  v )

inlinestatic

Definition at line 61 of file af_volumedetect.c.

Referenced by print_stats().

print_stats()

static void print_stats ( AVFilterContext *  ctx )

static

Definition at line 69 of file af_volumedetect.c.

Referenced by uninit().

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 112 of file af_volumedetect.c.

Variable Documentation

volumedetect_inputs

const AVFilterPad volumedetect_inputs[]

static

Initial value:

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

Definition at line 117 of file af_volumedetect.c.

volumedetect_outputs

const AVFilterPad volumedetect_outputs[]

static

Initial value:

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

Definition at line 125 of file af_volumedetect.c.

ff_af_volumedetect

const AVFilter ff_af_volumedetect

Initial value:

= {
    .name          = "volumedetect",
    .description   = NULL_IF_CONFIG_SMALL("Detect audio volume."),
    .priv_size     = sizeof(VolDetectContext),
    .uninit        = uninit,
    .flags         = AVFILTER_FLAG_METADATA_ONLY,
    FILTER_INPUTS(volumedetect_inputs),
    FILTER_OUTPUTS(volumedetect_outputs),
    FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16P),
}

Definition at line 132 of file af_volumedetect.c.