vf_aspect.c File Reference

aspect ratio modification video filters More...

#include "config_components.h"
#include <float.h>
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "filters.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	AspectContext

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

Enumerations
enum	var_name {   VAR_W , VAR_H , VAR_A , VAR_DAR ,   VAR_SAR , VAR_HSUB , VAR_VSUB , VARS_NB }

Functions
static int	filter_frame (AVFilterLink *link, AVFrame *frame)
static void	compute_dar (AVRational *dar, AVRational sar, int w, int h)
static int	get_aspect_ratio (AVFilterLink *inlink, AVRational *aspect_ratio)

Variables
static const char *const	var_names []
static const AVFilterPad	aspect_inputs []

Detailed Description

aspect ratio modification video filters

Definition in file vf_aspect.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(AspectContext, x)

Definition at line 79 of file vf_aspect.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 80 of file vf_aspect.c.

Enumeration Type Documentation

var_name

enum var_name

Enumerator
VAR_W
VAR_H
VAR_A
VAR_DAR
VAR_SAR
VAR_HSUB
VAR_VSUB
VARS_NB

Definition at line 52 of file vf_aspect.c.

Function Documentation

filter_frame()

static int filter_frame ( AVFilterLink * link, AVFrame * frame )

static

Definition at line 71 of file vf_aspect.c.

compute_dar()

static void compute_dar ( AVRational * dar, AVRational sar, int w, int h )

inlinestatic

Definition at line 82 of file vf_aspect.c.

get_aspect_ratio()

static int get_aspect_ratio ( AVFilterLink * inlink, AVRational * aspect_ratio )

static

Definition at line 91 of file vf_aspect.c.

Variable Documentation

var_names

const char* const var_names[]

static

Initial value:

= {
    "w",
    "h",
    "a",
    "dar",
    "sar",
    "hsub",
    "vsub",
    NULL
}

Definition at line 41 of file vf_aspect.c.

aspect_inputs

const AVFilterPad aspect_inputs[]

static

Initial value:

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

Definition at line 130 of file vf_aspect.c.