vf_fieldorder.c File Reference

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

#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.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 AVFrame *	get_video_buffer (AVFilterLink *inlink, int w, int h)
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	avfilter_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 149 of file vf_fieldorder.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 150 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 42 of file vf_fieldorder.c.

static int config_input ( AVFilterLink *  inlink )

static

full an array with the number of bytes that the video data occupies per line for each plane of the input video

Definition at line 69 of file vf_fieldorder.c.

static AVFrame* get_video_buffer ( AVFilterLink *  inlink, int  w, int  h  )

static

Definition at line 85 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 93 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 152 of file vf_fieldorder.c.

const AVFilterPad avfilter_vf_fieldorder_inputs[]

static

Initial value:

= {
    {
        .name             = "default",
        .type             = AVMEDIA_TYPE_VIDEO,
        .config_props     = config_input,
        .get_video_buffer = get_video_buffer,
        .filter_frame     = filter_frame,
        .needs_writable   = 1,
    },
    { NULL }
}

Definition at line 161 of file vf_fieldorder.c.

const AVFilterPad avfilter_vf_fieldorder_outputs[]

static

Initial value:

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

Definition at line 173 of file vf_fieldorder.c.

AVFilter avfilter_vf_fieldorder

Initial value:

= {
    .name          = "fieldorder",
    .description   = NULL_IF_CONFIG_SMALL("Set the field order."),
    .priv_size     = sizeof(FieldOrderContext),
    .priv_class    = &fieldorder_class,
    .query_formats = query_formats,
    .inputs        = avfilter_vf_fieldorder_inputs,
    .outputs       = avfilter_vf_fieldorder_outputs,
}

Definition at line 181 of file vf_fieldorder.c.