vsrc_sierpinski.c File Reference

Sierpinski carpet fractal renderer. More...

#include "avfilter.h"
#include "filters.h"
#include "video.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/lfg.h"
#include "libavutil/random_seed.h"
#include <float.h>
#include <math.h>

Go to the source code of this file.

Data Structures
struct	SierpinskiContext

Macros
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (sierpinski)
static int	fill_sierpinski (SierpinskiContext *s, int x, int y)
static int	draw_triangle_slice (AVFilterContext *ctx, void *arg, int job, int nb_jobs)
static int	draw_carpet_slice (AVFilterContext *ctx, void *arg, int job, int nb_jobs)
static int	config_output (AVFilterLink *outlink)
static void	draw_sierpinski (AVFilterContext *ctx, AVFrame *frame)
static int	sierpinski_request_frame (AVFilterLink *link)

Variables
static const AVOption	sierpinski_options []
static const AVFilterPad	sierpinski_outputs []
const FFFilter	ff_vsrc_sierpinski

Detailed Description

Sierpinski carpet fractal renderer.

Definition in file vsrc_sierpinski.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(SierpinskiContext, x)

Definition at line 54 of file vsrc_sierpinski.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 55 of file vsrc_sierpinski.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

sierpinski

)

fill_sierpinski()

static int fill_sierpinski ( SierpinskiContext * s, int x, int y )

static

Definition at line 72 of file vsrc_sierpinski.c.

Referenced by draw_carpet_slice().

draw_triangle_slice()

static int draw_triangle_slice ( AVFilterContext * ctx, void * arg, int job, int nb_jobs )

static

Definition at line 88 of file vsrc_sierpinski.c.

Referenced by config_output().

draw_carpet_slice()

static int draw_carpet_slice ( AVFilterContext * ctx, void * arg, int job, int nb_jobs )

static

Definition at line 113 of file vsrc_sierpinski.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 138 of file vsrc_sierpinski.c.

draw_sierpinski()

static void draw_sierpinski ( AVFilterContext * ctx, AVFrame * frame )

static

Definition at line 161 of file vsrc_sierpinski.c.

Referenced by sierpinski_request_frame().

sierpinski_request_frame()

static int sierpinski_request_frame ( AVFilterLink * link )

static

Definition at line 188 of file vsrc_sierpinski.c.

Variable Documentation

sierpinski_options

const AVOption sierpinski_options[]

static

Initial value:

= {
    {"size", "set frame size", OFFSET(w),          AV_OPT_TYPE_IMAGE_SIZE, {.str="640x480"}, 0,          0, FLAGS },
    {"s",    "set frame size", OFFSET(w),          AV_OPT_TYPE_IMAGE_SIZE, {.str="640x480"}, 0,          0, FLAGS },
    {"rate", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"},      0,    INT_MAX, FLAGS },
    {"r",    "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"},      0,    INT_MAX, FLAGS },
    {"seed", "set the seed",   OFFSET(seed),       AV_OPT_TYPE_INT64,      {.i64=-1},       -1, UINT32_MAX, FLAGS },
    {"jump", "set the jump",   OFFSET(jump),       AV_OPT_TYPE_INT,        {.i64=100},       1,      10000, FLAGS },
    {"type","set fractal type",OFFSET(type),       AV_OPT_TYPE_INT,        {.i64=0},         0,          1, FLAGS, .unit = "type" },
    {"carpet", "sierpinski carpet", 0,             AV_OPT_TYPE_CONST,      {.i64=0},         0,          0, FLAGS, .unit = "type" },
    {"triangle", "sierpinski triangle", 0,         AV_OPT_TYPE_CONST,      {.i64=1},         0,          0, FLAGS, .unit = "type" },
    {NULL},
}

Definition at line 57 of file vsrc_sierpinski.c.

sierpinski_outputs

const AVFilterPad sierpinski_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .request_frame = sierpinski_request_frame,
        .config_props  = config_output,
    },
}

Definition at line 205 of file vsrc_sierpinski.c.

ff_vsrc_sierpinski

const FFFilter ff_vsrc_sierpinski

Initial value:

= {
    .p.name        = "sierpinski",
    .p.description = NULL_IF_CONFIG_SMALL("Render a Sierpinski fractal."),
    .p.priv_class  = &sierpinski_class,
    .p.inputs      = NULL,
    .p.flags       = AVFILTER_FLAG_SLICE_THREADS,
    .priv_size     = sizeof(SierpinskiContext),
    FILTER_OUTPUTS(sierpinski_outputs),
    FILTER_SINGLE_PIXFMT(AV_PIX_FMT_0BGR32),
}

Definition at line 214 of file vsrc_sierpinski.c.