Data Structures | Macros | Functions | Variables
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


#define MAX_DB   91


static int query_formats (AVFilterContext *ctx)
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)


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

Macro Definition Documentation

#define MAX_DB   91

Definition at line 83 of file af_volumedetect.c.

Referenced by logdb(), and print_stats().

Function Documentation

static int query_formats ( AVFilterContext ctx)

Definition at line 36 of file af_volumedetect.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame samples 

Definition at line 60 of file af_volumedetect.c.

static double logdb ( uint64_t  v)

Definition at line 85 of file af_volumedetect.c.

Referenced by print_stats().

static void print_stats ( AVFilterContext ctx)

Definition at line 93 of file af_volumedetect.c.

Referenced by uninit().

static av_cold void uninit ( AVFilterContext ctx)

Definition at line 136 of file af_volumedetect.c.

Variable Documentation

const AVFilterPad volumedetect_inputs[]
Initial value:
= {
.name = "default",
.filter_frame = filter_frame,
{ NULL }
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *samples)

Definition at line 141 of file af_volumedetect.c.

const AVFilterPad volumedetect_outputs[]
Initial value:
= {
.name = "default",
{ NULL }
#define NULL
Definition: coverity.c:32

Definition at line 150 of file af_volumedetect.c.

AVFilter ff_af_volumedetect
Initial value:
= {
.name = "volumedetect",
.description = NULL_IF_CONFIG_SMALL("Detect audio volume."),
.priv_size = sizeof(VolDetectContext),
static int query_formats(AVFilterContext *ctx)
static const AVFilterPad volumedetect_outputs[]
static av_cold void uninit(AVFilterContext *ctx)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
static const AVFilterPad volumedetect_inputs[]

Definition at line 158 of file af_volumedetect.c.