vf_blackframe.c File Reference

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

#include "avfilter.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, void *opaque)
static void	draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
static void	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 void draw_slice ( AVFilterLink *  inlink, int  y, int  h, int  slice_dir  )

static

Definition at line 74 of file vf_blackframe.c.

Referenced by avfilter_draw_slice().

static void end_frame ( AVFilterLink *  inlink )

static

Definition at line 91 of file vf_blackframe.c.

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

static

Definition at line 51 of file vf_blackframe.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 39 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    = (AVFilterPad[]) {{ .name = "default",
                                    .type             = AVMEDIA_TYPE_VIDEO,
                                    .draw_slice       = draw_slice,
                                    .get_video_buffer = avfilter_null_get_video_buffer,
                                    .start_frame      = avfilter_null_start_frame,
                                    .end_frame        = end_frame, },
                                  { .name = NULL}},

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

Definition at line 109 of file vf_blackframe.c.