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 "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. More...
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. More...
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *cur)

Variables
static const AVOption	mpdecimate_options []
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	mpdecimate_inputs []
const AVFilter	ff_vf_mpdecimate

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(DecimateContext, x)

Definition at line 56 of file vf_mpdecimate.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 57 of file vf_mpdecimate.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

mpdecimate

)

diff_planes()

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 75 of file vf_mpdecimate.c.

Referenced by decimate_frame().

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 113 of file vf_mpdecimate.c.

Referenced by filter_frame().

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 151 of file vf_mpdecimate.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 165 of file vf_mpdecimate.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 187 of file vf_mpdecimate.c.

filter_frame()

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

static

Definition at line 198 of file vf_mpdecimate.c.

Variable Documentation

mpdecimate_options

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 },
    { "keep", "set the number of similar consecutive frames to be kept before starting to drop similar frames",
      OFFSET(max_keep_count), AV_OPT_TYPE_INT, {.i64=0}, 0, 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 59 of file vf_mpdecimate.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P,      AV_PIX_FMT_YUV422P,
    AV_PIX_FMT_YUV420P,      AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_YUV410P,      AV_PIX_FMT_YUV440P,
    AV_PIX_FMT_YUVJ444P,     AV_PIX_FMT_YUVJ422P,
    AV_PIX_FMT_YUVJ420P,     AV_PIX_FMT_YUVJ440P,
    AV_PIX_FMT_YUVA420P,
 
    AV_PIX_FMT_GBRP,
 
    AV_PIX_FMT_YUVA444P,
    AV_PIX_FMT_YUVA422P,
 
    AV_PIX_FMT_NONE
}

Definition at line 171 of file vf_mpdecimate.c.

mpdecimate_inputs

const AVFilterPad mpdecimate_inputs[]

static

Initial value:

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

Definition at line 231 of file vf_mpdecimate.c.

ff_vf_mpdecimate

const 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,
    FILTER_INPUTS(mpdecimate_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
}

Definition at line 240 of file vf_mpdecimate.c.