vf_smartblur.c File Reference

#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libswscale/swscale.h"
#include "avfilter.h"
#include "filters.h"
#include "video.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	OFFSET(x)   offsetof(SmartblurContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Functions
	AVFILTER_DEFINE_CLASS (smartblur)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (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, AVFrame *inpic)

Variables
static const AVOption	smartblur_options []
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	smartblur_inputs []
const AVFilter	ff_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

RADIUS_MIN

#define RADIUS_MIN   0.1

Definition at line 36 of file vf_smartblur.c.

RADIUS_MAX

#define RADIUS_MAX   5.0

Definition at line 37 of file vf_smartblur.c.

STRENGTH_MIN

#define STRENGTH_MIN   -1.0

Definition at line 39 of file vf_smartblur.c.

STRENGTH_MAX

#define STRENGTH_MAX   1.0

Definition at line 40 of file vf_smartblur.c.

THRESHOLD_MIN

#define THRESHOLD_MIN   -30

Definition at line 42 of file vf_smartblur.c.

THRESHOLD_MAX

#define THRESHOLD_MAX   30

Definition at line 43 of file vf_smartblur.c.

OFFSET

#define OFFSET

(

x

)

offsetof(SmartblurContext, x)

Definition at line 63 of file vf_smartblur.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 64 of file vf_smartblur.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

smartblur

)

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 93 of file vf_smartblur.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 126 of file vf_smartblur.c.

alloc_sws_context()

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

static

Definition at line 144 of file vf_smartblur.c.

Referenced by config_props().

config_props()

static int config_props ( AVFilterLink *  inlink )

static

Definition at line 171 of file vf_smartblur.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, const int  threshold, struct SwsContext *  filter_context  )

static

Definition at line 189 of file vf_smartblur.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 253 of file vf_smartblur.c.

Variable Documentation

smartblur_options

const AVOption smartblur_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_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 },
    { "luma_threshold", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT,   {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
    { "lt",             "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT,   {.i64=0}, THRESHOLD_MIN, THRESHOLD_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_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 },
    { "chroma_threshold", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT,   {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
    { "ct",               "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT,   {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
 
    { "alpha_radius",    "set alpha radius",    OFFSET(alpha.radius),    AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
    { "ar"         ,     "set alpha radius",    OFFSET(alpha.radius),    AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
    { "alpha_strength",  "set alpha strength",  OFFSET(alpha.strength),  AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
    { "as",              "set alpha strength",  OFFSET(alpha.strength),  AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
    { "alpha_threshold", "set alpha threshold", OFFSET(alpha.threshold), AV_OPT_TYPE_INT,   {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
    { "at",              "set alpha threshold", OFFSET(alpha.threshold), AV_OPT_TYPE_INT,   {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
 
    { NULL }
}

Definition at line 66 of file vf_smartblur.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
    AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
    AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
    AV_PIX_FMT_YUV440P, AV_PIX_FMT_GRAY8,
    AV_PIX_FMT_NONE
}

Definition at line 135 of file vf_smartblur.c.

smartblur_inputs

const AVFilterPad smartblur_inputs[]

static

Initial value:

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

Definition at line 295 of file vf_smartblur.c.

ff_vf_smartblur

const AVFilter ff_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,
    .uninit        = uninit,
    FILTER_INPUTS(smartblur_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .priv_class    = &smartblur_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
}

Definition at line 304 of file vf_smartblur.c.