vf_field.c File Reference

field filter, based on libmpcodecs/vf_field.c by Rich Felker More...

#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	FieldContext

Macros
#define	OFFSET(x)   offsetof(FieldContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Enumerations
enum	FieldType { FIELD_TYPE_TOP = 0, FIELD_TYPE_BOTTOM }

Functions
	AVFILTER_DEFINE_CLASS (field)
static av_cold int	init (AVFilterContext *ctx, const char *args)
static int	config_props_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFilterBufferRef *inpicref)

Variables
static const AVOption	field_options []
static const AVFilterPad	field_inputs []
static const AVFilterPad	field_outputs []
AVFilter	avfilter_vf_field

Detailed Description

field filter, based on libmpcodecs/vf_field.c by Rich Felker

Definition in file vf_field.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(FieldContext, x)

Definition at line 40 of file vf_field.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 41 of file vf_field.c.

Enumeration Type Documentation

enum FieldType

Enumerator:

FIELD_TYPE_TOP
FIELD_TYPE_BOTTOM

Definition at line 32 of file vf_field.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

field

)

static av_cold int init ( AVFilterContext *  ctx, const char *  args  )

static

Definition at line 53 of file vf_field.c.

static int config_props_output ( AVFilterLink *  outlink )

static

Definition at line 64 of file vf_field.c.

static int filter_frame ( AVFilterLink *  inlink, AVFilterBufferRef *  inpicref  )

static

Definition at line 85 of file vf_field.c.

Variable Documentation

const AVOption field_options[]

static

Initial value:

= {
    {"type", "set field type (top or bottom)", OFFSET(type), AV_OPT_TYPE_INT, {.i64=FIELD_TYPE_TOP}, 0, 1, FLAGS, "field_type" },
    {"top",    "select top field",    0, AV_OPT_TYPE_CONST, {.i64=FIELD_TYPE_TOP},    INT_MIN, INT_MAX, FLAGS, "field_type"},
    {"bottom", "select bottom field", 0, AV_OPT_TYPE_CONST, {.i64=FIELD_TYPE_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "field_type"},

    {NULL}
}

Definition at line 43 of file vf_field.c.

const AVFilterPad field_inputs[]

static

Initial value:

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

Definition at line 102 of file vf_field.c.

const AVFilterPad field_outputs[]

static

Initial value:

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

Definition at line 112 of file vf_field.c.

AVFilter avfilter_vf_field

Initial value:

= {
    .name          = "field",
    .description   = NULL_IF_CONFIG_SMALL("Extract a field from the input video."),

    .priv_size     = sizeof(FieldContext),
    .init          = init,

    .inputs        = field_inputs,
    .outputs       = field_outputs,
    .priv_class    = &field_class,
}

Definition at line 121 of file vf_field.c.