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vf_fieldorder.c File Reference

video field order filter, heavily influenced by vf_pad.c More...

#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  FieldOrderContext
 

Macros

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

Functions

static int query_formats (AVFilterContext *ctx)
 
static int config_input (AVFilterLink *inlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *frame)
 
 AVFILTER_DEFINE_CLASS (fieldorder)
 

Variables

static const AVOption fieldorder_options []
 
static const AVFilterPad avfilter_vf_fieldorder_inputs []
 
static const AVFilterPad avfilter_vf_fieldorder_outputs []
 
AVFilter ff_vf_fieldorder
 

Detailed Description

video field order filter, heavily influenced by vf_pad.c

Definition in file vf_fieldorder.c.

Macro Definition Documentation

#define OFFSET (   x)    offsetof(FieldOrderContext, x)

Definition at line 157 of file vf_fieldorder.c.

Definition at line 158 of file vf_fieldorder.c.

Function Documentation

static int query_formats ( AVFilterContext ctx)
static

accept any input pixel format that is not hardware accelerated, not a bitstream format, and does not have vertically sub-sampled chroma

Definition at line 41 of file vf_fieldorder.c.

static int config_input ( AVFilterLink inlink)
static

Definition at line 69 of file vf_fieldorder.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame frame 
)
static

Move every line up one line, working from the top to the bottom of the frame. The original top line is lost. The new last line is created as a copy of the penultimate line from that field.

Move every line down one line, working from the bottom to the top of the frame. The original bottom line is lost. The new first line is created as a copy of the second line from that field.

Definition at line 77 of file vf_fieldorder.c.

AVFILTER_DEFINE_CLASS ( fieldorder  )

Variable Documentation

const AVOption fieldorder_options[]
static
Initial value:
= {
{ "order", "output field order", OFFSET(dst_tff), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "order" },
{ "bff", "bottom field first", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, .flags=FLAGS, .unit = "order" },
{ "tff", "top field first", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, .flags=FLAGS, .unit = "order" },
{ NULL }
}

Definition at line 160 of file vf_fieldorder.c.

const AVFilterPad avfilter_vf_fieldorder_inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
}

Definition at line 169 of file vf_fieldorder.c.

const AVFilterPad avfilter_vf_fieldorder_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}

Definition at line 179 of file vf_fieldorder.c.

AVFilter ff_vf_fieldorder
Initial value:
= {
.name = "fieldorder",
.description = NULL_IF_CONFIG_SMALL("Set the field order."),
.priv_size = sizeof(FieldOrderContext),
.priv_class = &fieldorder_class,
}

Definition at line 187 of file vf_fieldorder.c.