vf_fieldorder.c File Reference

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

#include <stdio.h>
#include <string.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

Functions
static av_cold int	init (AVFilterContext *ctx, const char *args)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static AVFilterBufferRef *	get_video_buffer (AVFilterLink *inlink, int perms, int w, int h)
static int	filter_frame (AVFilterLink *inlink, AVFilterBufferRef *frame)

Variables
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.

Function Documentation

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

static

Definition at line 45 of file vf_fieldorder.c.

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 71 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 98 of file vf_fieldorder.c.

static AVFilterBufferRef* get_video_buffer ( AVFilterLink *  inlink, int  perms, int  w, int  h  )

static

Definition at line 116 of file vf_fieldorder.c.

static int filter_frame ( AVFilterLink *  inlink, AVFilterBufferRef *  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 124 of file vf_fieldorder.c.

Variable Documentation

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,
        .min_perms        = AV_PERM_READ | AV_PERM_WRITE,
    },
    { NULL }
}

Definition at line 180 of file vf_fieldorder.c.

const AVFilterPad avfilter_vf_fieldorder_outputs[]

static

Initial value:

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

Definition at line 192 of file vf_fieldorder.c.

AVFilter avfilter_vf_fieldorder

Initial value:

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

Definition at line 200 of file vf_fieldorder.c.