vf_tile.c File Reference

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

Go to the source code of this file.

Data Structures
struct	TileContext

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

Functions
	AVFILTER_DEFINE_CLASS (tile)
static av_cold int	init (AVFilterContext *ctx)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static int	config_props (AVFilterLink *outlink)
static void	get_tile_pos (AVFilterContext *ctx, unsigned *x, unsigned *y, unsigned current)
static void	draw_blank_frame (AVFilterContext *ctx, AVFrame *out_buf)
static int	end_last_frame (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *picref)
static int	request_frame (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	tile_options []
static const AVFilterPad	tile_inputs []
static const AVFilterPad	tile_outputs []
const FFFilter	ff_vf_tile

Detailed Description

tile video filter

Definition in file vf_tile.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(TileContext, x)

Definition at line 51 of file vf_tile.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 52 of file vf_tile.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

tile

)

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 73 of file vf_tile.c.

query_formats()

static int query_formats ( const AVFilterContext *  ctx, AVFilterFormatsConfig **  cfg_in, AVFilterFormatsConfig **  cfg_out  )

static

Definition at line 114 of file vf_tile.c.

config_props()

static int config_props ( AVFilterLink *  outlink )

static

Definition at line 122 of file vf_tile.c.

get_tile_pos()

static void get_tile_pos ( AVFilterContext *  ctx, unsigned *  x, unsigned *  y, unsigned  current  )

static

Definition at line 157 of file vf_tile.c.

Referenced by draw_blank_frame(), and filter_frame().

draw_blank_frame()

static void draw_blank_frame ( AVFilterContext *  ctx, AVFrame *  out_buf  )

static

Definition at line 168 of file vf_tile.c.

Referenced by end_last_frame().

end_last_frame()

static int end_last_frame ( AVFilterContext *  ctx )

static

Definition at line 181 of file vf_tile.c.

Referenced by filter_frame(), and request_frame().

filter_frame()

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  picref  )

static

Definition at line 204 of file vf_tile.c.

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 257 of file vf_tile.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 270 of file vf_tile.c.

Variable Documentation

tile_options

const AVOption tile_options[]

static

Initial value:

= {
    { "layout", "set grid size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,
        {.str = "6x5"}, 0, 0, FLAGS },
    { "nb_frames", "set maximum number of frame to render", OFFSET(nb_frames),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
    { "margin",  "set outer border margin in pixels",    OFFSET(margin),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
    { "padding", "set inner border thickness in pixels", OFFSET(padding),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
    { "color",   "set the color of the unused area", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS },
    { "overlap", "set how many frames to overlap for each render", OFFSET(overlap),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
    { "init_padding", "set how many frames to initially pad", OFFSET(init_padding),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
    { NULL }
}

Definition at line 54 of file vf_tile.c.

tile_inputs

const AVFilterPad tile_inputs[]

static

Initial value:

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

Definition at line 278 of file vf_tile.c.

tile_outputs

const AVFilterPad tile_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_props,
        .request_frame = request_frame,
    },
}

Definition at line 286 of file vf_tile.c.

ff_vf_tile

const FFFilter ff_vf_tile

Initial value:

= {
    .p.name        = "tile",
    .p.description = NULL_IF_CONFIG_SMALL("Tile several successive frames together."),
    .p.priv_class  = &tile_class,
    .init          = init,
    .uninit        = uninit,
    .priv_size     = sizeof(TileContext),
    FILTER_INPUTS(tile_inputs),
    FILTER_OUTPUTS(tile_outputs),
    FILTER_QUERY_FUNC2(query_formats),
}

Definition at line 295 of file vf_tile.c.