vf_addroi.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	AddROIContext

Macros
#define	OFFSET(x)   offsetof(AddROIContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Enumerations
enum	{   X, Y, W, H,   NB_PARAMS }
enum	{ VAR_IW, VAR_IH, NB_VARS }

Functions
static int	addroi_config_input (AVFilterLink *inlink)
static int	addroi_filter_frame (AVFilterLink *inlink, AVFrame *frame)
static av_cold int	addroi_init (AVFilterContext *avctx)
static av_cold void	addroi_uninit (AVFilterContext *avctx)
	AVFILTER_DEFINE_CLASS (addroi)

Variables
static const char	addroi_param_names []
static const char *const	addroi_var_names []
static const AVOption	addroi_options []
static const AVFilterPad	addroi_inputs []
const AVFilter	ff_vf_addroi

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AddROIContext, x)

Definition at line 218 of file vf_addroi.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Definition at line 219 of file vf_addroi.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
X
Y
W
H
NB_PARAMS

Definition at line 26 of file vf_addroi.c.

anonymous enum

anonymous enum

Enumerator
VAR_IW
VAR_IH
NB_VARS

Definition at line 34 of file vf_addroi.c.

Function Documentation

addroi_config_input()

static int addroi_config_input ( AVFilterLink *  inlink )

static

Definition at line 56 of file vf_addroi.c.

addroi_filter_frame()

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

static

Definition at line 95 of file vf_addroi.c.

addroi_init()

static av_cold int addroi_init ( AVFilterContext *  avctx )

static

Definition at line 187 of file vf_addroi.c.

addroi_uninit()

static av_cold void addroi_uninit ( AVFilterContext *  avctx )

static

Definition at line 207 of file vf_addroi.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

addroi

)

Variable Documentation

addroi_param_names

const char addroi_param_names[]

static

Initial value:

= {
    'x', 'y', 'w', 'h',
}

Definition at line 30 of file vf_addroi.c.

Referenced by addroi_config_input(), and addroi_init().

addroi_var_names

const char* const addroi_var_names[]

static

Initial value:

= {
    "iw",
    "ih",
}

Definition at line 39 of file vf_addroi.c.

Referenced by addroi_init().

addroi_options

const AVOption addroi_options[]

static

Initial value:

= {
    { "x", "Region distance from left edge of frame.",
      OFFSET(region_str[X]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS },
    { "y", "Region distance from top edge of frame.",
      OFFSET(region_str[Y]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS },
    { "w", "Region width.",
      OFFSET(region_str[W]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS },
    { "h", "Region height.",
      OFFSET(region_str[H]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS },
 
    { "qoffset", "Quantisation offset to apply in the region.",
      OFFSET(qoffset), AV_OPT_TYPE_RATIONAL, { .dbl = -0.1 }, -1, +1, FLAGS },
 
    { "clear", "Remove any existing regions of interest before adding the new one.",
      OFFSET(clear), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
 
    { NULL }
}

Definition at line 220 of file vf_addroi.c.

addroi_inputs

const AVFilterPad addroi_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = addroi_config_input,
        .filter_frame = addroi_filter_frame,
    },
}

Definition at line 241 of file vf_addroi.c.

ff_vf_addroi

const AVFilter ff_vf_addroi

Initial value:

= {
    .name        = "addroi",
    .description = NULL_IF_CONFIG_SMALL("Add region of interest to frame."),
    .init        = addroi_init,
    .uninit      = addroi_uninit,
 
    .priv_size   = sizeof(AddROIContext),
    .priv_class  = &addroi_class,
 
    .flags       = AVFILTER_FLAG_METADATA_ONLY,
 
    FILTER_INPUTS(addroi_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
}

Definition at line 250 of file vf_addroi.c.