FFmpeg
Data Structures | Macros | Functions | Variables
vf_lenscorrection.c File Reference

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

#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

Definition at line 47 of file vf_lenscorrection.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( lenscorrection  )
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().

static int query_formats ( AVFilterContext ctx)
static

Definition at line 99 of file vf_lenscorrection.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 116 of file vf_lenscorrection.c.

static int config_props ( AVFilterLink outlink)
static

Definition at line 126 of file vf_lenscorrection.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame in 
)
static

Definition at line 140 of file vf_lenscorrection.c.

Variable Documentation

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 }
}
#define NULL
Definition: coverity.c:32
#define FLAGS

Definition at line 48 of file vf_lenscorrection.c.

const AVFilterPad lenscorrection_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *in)

Definition at line 201 of file vf_lenscorrection.c.

const AVFilterPad lenscorrection_outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_props,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int config_props(AVFilterLink *outlink)

Definition at line 210 of file vf_lenscorrection.c.

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),
.priv_class = &lenscorrection_class,
}
static const AVFilterPad lenscorrection_inputs[]
static av_cold void uninit(AVFilterContext *ctx)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
static int query_formats(AVFilterContext *ctx)
#define flags(name, subs,...)
Definition: cbs_av1.c:561
static const AVFilterPad lenscorrection_outputs[]

Definition at line 219 of file vf_lenscorrection.c.