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vf_smartblur.c File Reference

Apply a smartblur filter to the input video Ported from MPlayer libmpcodecs/vf_smartblur.c by Michael Niedermayer. More...

#include "libavutil/pixdesc.h"
#include "libswscale/swscale.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  FilterParam
 
struct  SmartblurContext
 

Macros

#define RADIUS_MIN   0.1
 
#define RADIUS_MAX   5.0
 
#define STRENGTH_MIN   -1.0
 
#define STRENGTH_MAX   1.0
 
#define THRESHOLD_MIN   -30
 
#define THRESHOLD_MAX   30
 
#define CHECK_PARAM(param, name, min, max, format, ret)
 

Functions

static av_cold int init (AVFilterContext *ctx, const char *args)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int alloc_sws_context (FilterParam *f, int width, int height, unsigned int flags)
 
static int config_props (AVFilterLink *inlink)
 
static void blur (uint8_t *dst, const int dst_linesize, const uint8_t *src, const int src_linesize, const int w, const int h, const int threshold, struct SwsContext *filter_context)
 
static int filter_frame (AVFilterLink *inlink, AVFilterBufferRef *inpic)
 

Variables

static const AVFilterPad smartblur_inputs []
 
static const AVFilterPad smartblur_outputs []
 
AVFilter avfilter_vf_smartblur
 

Detailed Description

Apply a smartblur filter to the input video Ported from MPlayer libmpcodecs/vf_smartblur.c by Michael Niedermayer.

Definition in file vf_smartblur.c.

Macro Definition Documentation

#define RADIUS_MIN   0.1

Definition at line 35 of file vf_smartblur.c.

Referenced by init().

#define RADIUS_MAX   5.0

Definition at line 36 of file vf_smartblur.c.

Referenced by init().

#define STRENGTH_MIN   -1.0

Definition at line 38 of file vf_smartblur.c.

Referenced by init().

#define STRENGTH_MAX   1.0

Definition at line 39 of file vf_smartblur.c.

Referenced by init().

#define THRESHOLD_MIN   -30

Definition at line 41 of file vf_smartblur.c.

Referenced by init().

#define THRESHOLD_MAX   30

Definition at line 42 of file vf_smartblur.c.

Referenced by init().

#define CHECK_PARAM (   param,
  name,
  min,
  max,
  format,
  ret 
)
Value:
if (param < min || param > max) { \
av_log(ctx, AV_LOG_ERROR, \
"Invalid " #name " value " #format ": " \
"must be included between range " #format " and " #format "\n",\
param, min, max); \
ret = AVERROR(EINVAL); \
}

Definition at line 60 of file vf_smartblur.c.

Referenced by init().

Function Documentation

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

Definition at line 69 of file vf_smartblur.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 119 of file vf_smartblur.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 127 of file vf_smartblur.c.

static int alloc_sws_context ( FilterParam f,
int  width,
int  height,
unsigned int  flags 
)
static

Definition at line 142 of file vf_smartblur.c.

Referenced by config_props().

static int config_props ( AVFilterLink inlink)
static

Definition at line 169 of file vf_smartblur.c.

static void blur ( uint8_t dst,
const int  dst_linesize,
const uint8_t src,
const int  src_linesize,
const int  w,
const int  h,
const int  threshold,
struct SwsContext filter_context 
)
static

Definition at line 185 of file vf_smartblur.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink inlink,
AVFilterBufferRef inpic 
)
static

Definition at line 249 of file vf_smartblur.c.

Variable Documentation

const AVFilterPad smartblur_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
.config_props = config_props,
.min_perms = AV_PERM_READ,
},
{ NULL }
}

Definition at line 284 of file vf_smartblur.c.

const AVFilterPad smartblur_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}

Definition at line 295 of file vf_smartblur.c.

AVFilter avfilter_vf_smartblur
Initial value:
= {
.name = "smartblur",
.description = NULL_IF_CONFIG_SMALL("Blur the input video without impacting the outlines."),
.priv_size = sizeof(SmartblurContext),
.init = init,
}

Definition at line 303 of file vf_smartblur.c.