vf_lenscorrection.c File Reference

#include <stdlib.h>
#include <math.h>
#include "libavutil/opt.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	LenscorrectionCtx
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Functions
	AVFILTER_DEFINE_CLASS (lenscorrection)
static int	filter_slice (AVFilterContext *ctx, void *arg, int job, int nb_jobs)
static int	query_formats (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	config_props (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)

Variables
static const AVOption	lenscorrection_options []
static const AVFilterPad	lenscorrection_inputs []
static const AVFilterPad	lenscorrection_outputs []
AVFilter	ff_vf_lenscorrection

Detailed Description

Lenscorrection filter, algorithm from the frei0r plugin with the same name

Definition in file vf_lenscorrection.c.

Macro Definition Documentation

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 47 of file vf_lenscorrection.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

lenscorrection

)

filter_slice()

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

static

Definition at line 66 of file vf_lenscorrection.c.

Referenced by filter_frame().

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 99 of file vf_lenscorrection.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 116 of file vf_lenscorrection.c.

config_props()

static int config_props ( AVFilterLink *  outlink )

static

Definition at line 126 of file vf_lenscorrection.c.

filter_frame()

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

static

Definition at line 140 of file vf_lenscorrection.c.

Variable Documentation

lenscorrection_options

const AVOption lenscorrection_options[]

static

Initial value:

= {
    { "cx",     "set relative center x", 0x42, AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 1, .flags=FLAGS },
    { "cy",     "set relative center y", 0x42, AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 1, .flags=FLAGS },
    { "k1",     "set quadratic distortion factor", 0x42, AV_OPT_TYPE_DOUBLE, {.dbl=0.0}, -1, 1, .flags=FLAGS },
    { "k2",     "set double quadratic distortion factor", 0x42, AV_OPT_TYPE_DOUBLE, {.dbl=0.0}, -1, 1, .flags=FLAGS },
    { NULL }
}

Definition at line 48 of file vf_lenscorrection.c.

lenscorrection_inputs

const AVFilterPad lenscorrection_inputs[]

static

Initial value:

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

Definition at line 201 of file vf_lenscorrection.c.

lenscorrection_outputs

const AVFilterPad lenscorrection_outputs[]

static

Initial value:

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

Definition at line 210 of file vf_lenscorrection.c.

ff_vf_lenscorrection

AVFilter ff_vf_lenscorrection

Initial value:

= {
    .name          = "lenscorrection",
    .description   = NULL_IF_CONFIG_SMALL("Rectify the image by correcting for lens distortion."),
    .priv_size     = sizeof(LenscorrectionCtx),
    .query_formats = query_formats,
    .inputs        = lenscorrection_inputs,
    .outputs       = lenscorrection_outputs,
    .priv_class    = &lenscorrection_class,
    .uninit        = uninit,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 219 of file vf_lenscorrection.c.