vf_mpdecimate.c File Reference

#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixelutils.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "internal.h"
#include "formats.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	DecimateContext

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

Functions
	AVFILTER_DEFINE_CLASS (mpdecimate)
static int	diff_planes (AVFilterContext *ctx, uint8_t *cur, int cur_linesize, uint8_t *ref, int ref_linesize, int w, int h)
	Return 1 if the two planes are different, 0 otherwise.
static int	decimate_frame (AVFilterContext *ctx, AVFrame *cur, AVFrame *ref)
	Tell if the frame should be decimated, for example if it is no much different with respect to the reference frame ref.
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *cur)
static int	request_frame (AVFilterLink *outlink)

Variables
static const AVOption	mpdecimate_options []
static const AVFilterPad	mpdecimate_inputs []
static const AVFilterPad	mpdecimate_outputs []
AVFilter	ff_vf_mpdecimate

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(DecimateContext, x)

Definition at line 54 of file vf_mpdecimate.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 55 of file vf_mpdecimate.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

mpdecimate

)

static int diff_planes ( AVFilterContext *  ctx, uint8_t *  cur, int  cur_linesize, uint8_t *  ref, int  ref_linesize, int  w, int  h  )

static

Return 1 if the two planes are different, 0 otherwise.

Definition at line 71 of file vf_mpdecimate.c.

Referenced by decimate_frame().

static int decimate_frame ( AVFilterContext *  ctx, AVFrame *  cur, AVFrame *  ref  )

static

Tell if the frame should be decimated, for example if it is no much different with respect to the reference frame ref.

Definition at line 103 of file vf_mpdecimate.c.

Referenced by filter_frame().

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 130 of file vf_mpdecimate.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 144 of file vf_mpdecimate.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 150 of file vf_mpdecimate.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 167 of file vf_mpdecimate.c.

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

static

Definition at line 178 of file vf_mpdecimate.c.

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 207 of file vf_mpdecimate.c.

Variable Documentation

const AVOption mpdecimate_options[]

static

Initial value:

= {
    { "max",  "set the maximum number of consecutive dropped frames (positive), or the minimum interval between dropped frames (negative)",
      OFFSET(max_drop_count), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX, FLAGS },
    { "hi",   "set high dropping threshold", OFFSET(hi), AV_OPT_TYPE_INT, {.i64=64*12}, INT_MIN, INT_MAX, FLAGS },
    { "lo",   "set low dropping threshold", OFFSET(lo), AV_OPT_TYPE_INT, {.i64=64*5}, INT_MIN, INT_MAX, FLAGS },
    { "frac", "set fraction dropping threshold",  OFFSET(frac), AV_OPT_TYPE_FLOAT, {.dbl=0.33}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 57 of file vf_mpdecimate.c.

const AVFilterPad mpdecimate_inputs[]

static

Initial value:

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

Definition at line 220 of file vf_mpdecimate.c.

const AVFilterPad mpdecimate_outputs[]

static

Initial value:

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

Definition at line 230 of file vf_mpdecimate.c.

AVFilter ff_vf_mpdecimate

Initial value:

= {
    .name          = "mpdecimate",
    .description   = NULL_IF_CONFIG_SMALL("Remove near-duplicate frames."),
    .init          = init,
    .uninit        = uninit,
    .priv_size     = sizeof(DecimateContext),
    .priv_class    = &mpdecimate_class,
    .query_formats = query_formats,
    .inputs        = mpdecimate_inputs,
    .outputs       = mpdecimate_outputs,
}

Definition at line 239 of file vf_mpdecimate.c.