vf_blackframe.c File Reference

Search for black frames to detect scene transitions. More...

#include <stdio.h>
#include <inttypes.h>
#include "libavutil/internal.h"
#include "avfilter.h"
#include "internal.h"
#include "formats.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	BlackFrameContext

Functions
static int	query_formats (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx, const char *args)
static int	filter_frame (AVFilterLink *inlink, AVFilterBufferRef *frame)

Variables
static const AVFilterPad	avfilter_vf_blackframe_inputs []
static const AVFilterPad	avfilter_vf_blackframe_outputs []
AVFilter	avfilter_vf_blackframe

Detailed Description

Search for black frames to detect scene transitions.

Ported from MPlayer libmpcodecs/vf_blackframe.c.

Definition in file vf_blackframe.c.

Function Documentation

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 48 of file vf_blackframe.c.

static av_cold int init ( AVFilterContext *  ctx, const char *  args  )

static

Definition at line 60 of file vf_blackframe.c.

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

static

Definition at line 84 of file vf_blackframe.c.

Variable Documentation

const AVFilterPad avfilter_vf_blackframe_inputs[]

static

Initial value:

= {
    {
        .name             = "default",
        .type             = AVMEDIA_TYPE_VIDEO,
        .get_video_buffer = ff_null_get_video_buffer,
        .filter_frame     = filter_frame,
    },
    { NULL }
}

Definition at line 114 of file vf_blackframe.c.

const AVFilterPad avfilter_vf_blackframe_outputs[]

static

Initial value:

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

Definition at line 124 of file vf_blackframe.c.

AVFilter avfilter_vf_blackframe

Initial value:

= {
    .name        = "blackframe",
    .description = NULL_IF_CONFIG_SMALL("Detect frames that are (almost) black."),

    .priv_size = sizeof(BlackFrameContext),
    .init      = init,

    .query_formats = query_formats,

    .inputs    = avfilter_vf_blackframe_inputs,

    .outputs   = avfilter_vf_blackframe_outputs,
}

Definition at line 132 of file vf_blackframe.c.