vf_sab.c File Reference

Shape Adaptive Blur filter, ported from MPlayer libmpcodecs/vf_sab.c. More...

#include "libavutil/opt.h"
#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	SabContext

Macros
#define	COLOR_DIFF_COEFF_SIZE   512
#define	RADIUS_MIN   0.1
#define	RADIUS_MAX   4.0
#define	PRE_FILTER_RADIUS_MIN   0.1
#define	PRE_FILTER_RADIUS_MAX   2.0
#define	STRENGTH_MIN   0.1
#define	STRENGTH_MAX   100.0
#define	OFFSET(x)   offsetof(SabContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	NB_PLANES   4
#define	UPDATE_FACTOR

Functions
static int	query_formats (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (sab)
static av_cold int	init (AVFilterContext *ctx)
static void	close_filter_param (FilterParam *f)
static av_cold void	uninit (AVFilterContext *ctx)
static int	open_filter_param (FilterParam *f, int width, int height, unsigned int sws_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, FilterParam *fp)
static int	filter_frame (AVFilterLink *inlink, AVFrame *inpic)

Variables
static const AVOption	sab_options []
static const AVFilterPad	sab_inputs []
static const AVFilterPad	sab_outputs []
AVFilter	ff_vf_sab

Detailed Description

Shape Adaptive Blur filter, ported from MPlayer libmpcodecs/vf_sab.c.

Definition in file vf_sab.c.

Macro Definition Documentation

COLOR_DIFF_COEFF_SIZE

#define COLOR_DIFF_COEFF_SIZE   512

Definition at line 45 of file vf_sab.c.

Referenced by open_filter_param().

RADIUS_MIN

#define RADIUS_MIN   0.1

Definition at line 74 of file vf_sab.c.

Referenced by init().

RADIUS_MAX

#define RADIUS_MAX   4.0

Definition at line 75 of file vf_sab.c.

PRE_FILTER_RADIUS_MIN

#define PRE_FILTER_RADIUS_MIN   0.1

Definition at line 77 of file vf_sab.c.

Referenced by init().

PRE_FILTER_RADIUS_MAX

#define PRE_FILTER_RADIUS_MAX   2.0

Definition at line 78 of file vf_sab.c.

STRENGTH_MIN

#define STRENGTH_MIN   0.1

Definition at line 80 of file vf_sab.c.

Referenced by init().

STRENGTH_MAX

#define STRENGTH_MAX   100.0

Definition at line 81 of file vf_sab.c.

OFFSET

#define OFFSET

(

x

)

offsetof(SabContext, x)

Definition at line 83 of file vf_sab.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 84 of file vf_sab.c.

NB_PLANES

#define NB_PLANES   4

Definition at line 222 of file vf_sab.c.

Referenced by blur().

UPDATE_FACTOR

#define UPDATE_FACTOR

Value:

do {                                              \
        int factor;                                                     \
        factor = f.color_diff_coeff[COLOR_DIFF_COEFF_SIZE/2 + pre_val - \
                 f.pre_filter_buf[ix + iy*f.pre_filter_linesize]] * f.dist_coeff[dx + dy*f.dist_linesize]; \
        sum += src[ix + iy*src_linesize] * factor;                      \
        div += factor;                                                  \
    } while (0)

Referenced by blur().

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 58 of file vf_sab.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

sab

)

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 108 of file vf_sab.c.

close_filter_param()

static void close_filter_param ( FilterParam *  f )

static

Definition at line 131 of file vf_sab.c.

Referenced by config_props(), and uninit().

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 141 of file vf_sab.c.

open_filter_param()

static int open_filter_param ( FilterParam *  f, int  width, int  height, unsigned int  sws_flags  )

static

Definition at line 149 of file vf_sab.c.

Referenced by config_props().

config_props()

static int config_props ( AVFilterLink *  inlink )

static

Definition at line 201 of file vf_sab.c.

blur()

static void blur ( uint8_t *  dst, const int  dst_linesize, const uint8_t *  src, const int  src_linesize, const int  w, const int  h, FilterParam *  fp  )

static

Definition at line 224 of file vf_sab.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 282 of file vf_sab.c.

Variable Documentation

sab_options

const AVOption sab_options[]

static

Initial value:

= {
    { "luma_radius",            "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
    { "lr"         ,            "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
    { "luma_pre_filter_radius", "set luma pre-filter radius", OFFSET(luma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, PRE_FILTER_RADIUS_MIN, PRE_FILTER_RADIUS_MAX, .flags=FLAGS },
    { "lpfr",                   "set luma pre-filter radius", OFFSET(luma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, PRE_FILTER_RADIUS_MIN, PRE_FILTER_RADIUS_MAX, .flags=FLAGS },
    { "luma_strength",          "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
    { "ls",                     "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },

    { "chroma_radius",            "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
    { "cr",                       "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
    { "chroma_pre_filter_radius", "set chroma pre-filter radius",  OFFSET(chroma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=PRE_FILTER_RADIUS_MIN-1},
                                  PRE_FILTER_RADIUS_MIN-1, PRE_FILTER_RADIUS_MAX, .flags=FLAGS },
    { "cpfr",                     "set chroma pre-filter radius",  OFFSET(chroma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=PRE_FILTER_RADIUS_MIN-1},
                                  PRE_FILTER_RADIUS_MIN-1, PRE_FILTER_RADIUS_MAX, .flags=FLAGS },
    { "chroma_strength",          "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
    { "cs",                       "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },

    { NULL }
}

Definition at line 86 of file vf_sab.c.

sab_inputs

const AVFilterPad sab_inputs[]

static

Initial value:

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

Definition at line 308 of file vf_sab.c.

sab_outputs

const AVFilterPad sab_outputs[]

static

Initial value:

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

Definition at line 318 of file vf_sab.c.

ff_vf_sab

AVFilter ff_vf_sab

Initial value:

= {
    .name          = "sab",
    .description   = NULL_IF_CONFIG_SMALL("Apply shape adaptive blur."),
    .priv_size     = sizeof(SabContext),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = sab_inputs,
    .outputs       = sab_outputs,
    .priv_class    = &sab_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
}

Definition at line 326 of file vf_sab.c.