libavfilter/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	draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
static int	end_frame (AVFilterLink *inlink)
Variables
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 draw_slice	(	AVFilterLink *	inlink,
		int	y,
		int	h,
		int	slice_dir
	)			[static]

Definition at line 84 of file vf_blackframe.c.

static int end_frame

(

AVFilterLink *

inlink

)

[static]

Definition at line 101 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 query_formats

(

AVFilterContext *

ctx

)

[static]

Definition at line 48 of file vf_blackframe.c.

---

Variable Documentation

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    = (const AVFilterPad[]) {{ .name = "default",
                                          .type             = AVMEDIA_TYPE_VIDEO,
                                          .draw_slice       = draw_slice,
                                          .get_video_buffer = ff_null_get_video_buffer,
                                          .start_frame      = ff_null_start_frame,
                                          .end_frame        = end_frame, },
                                        { .name = NULL}},

    .outputs   = (const AVFilterPad[]) {{ .name       = "default",
                                    .type             = AVMEDIA_TYPE_VIDEO },
                                  { .name = NULL}},
}

Definition at line 124 of file vf_blackframe.c.