vf_bbox.c File Reference

bounding box detection filter More...

#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "bbox.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	BBoxContext

Macros
#define	OFFSET(x)   offsetof(BBoxContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define	SET_META(key, value)

Functions
	AVFILTER_DEFINE_CLASS (bbox)
static int	query_formats (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *frame)

Variables
static const AVOption	bbox_options []
static const AVFilterPad	bbox_inputs []
static const AVFilterPad	bbox_outputs []
AVFilter	avfilter_vf_bbox

Detailed Description

bounding box detection filter

Definition in file vf_bbox.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(BBoxContext, x)

Definition at line 38 of file vf_bbox.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 39 of file vf_bbox.c.

#define SET_META	(		key,
			value
	)

Value:

snprintf(buf, sizeof(buf), "%d", value);  \
    av_dict_set(metadata, key, buf, 0);

Definition at line 63 of file vf_bbox.c.

Referenced by filter_frame().

Function Documentation

AVFILTER_DEFINE_CLASS

(

bbox

)

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 48 of file vf_bbox.c.

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

static

Definition at line 67 of file vf_bbox.c.

Variable Documentation

const AVOption bbox_options[]

static

Initial value:

= {
    { "min_val", "set minimum luminance value for bounding box", OFFSET(min_val), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 254, FLAGS },
    { NULL }
}

Definition at line 41 of file vf_bbox.c.

const AVFilterPad bbox_inputs[]

static

Initial value:

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

Definition at line 108 of file vf_bbox.c.

const AVFilterPad bbox_outputs[]

static

Initial value:

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

Definition at line 117 of file vf_bbox.c.

AVFilter avfilter_vf_bbox

Initial value:

= {
    .name          = "bbox",
    .description   = NULL_IF_CONFIG_SMALL("Compute bounding box for each frame."),
    .priv_size     = sizeof(BBoxContext),
    .priv_class    = &bbox_class,
    .query_formats = query_formats,
    .inputs        = bbox_inputs,
    .outputs       = bbox_outputs,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
}

Definition at line 125 of file vf_bbox.c.