vf_tile.c File Reference

tile video filter More...

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

Go to the source code of this file.

Data Structures
struct	TileContext

Macros
#define	REASONABLE_SIZE   1024
#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, const char *args)
static int	query_formats (AVFilterContext *ctx)
static int	config_props (AVFilterLink *outlink)
static void	get_current_tile_pos (AVFilterContext *ctx, unsigned *x, unsigned *y)
static void	draw_blank_frame (AVFilterContext *ctx, AVFilterBufferRef *out_buf)
static int	end_last_frame (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFilterBufferRef *picref)
static int	request_frame (AVFilterLink *outlink)

Variables
static const AVOption	tile_options []
static const AVFilterPad	tile_inputs []
static const AVFilterPad	tile_outputs []
AVFilter	avfilter_vf_tile

Detailed Description

tile video filter

Definition in file vf_tile.c.

Macro Definition Documentation

#define REASONABLE_SIZE   1024

Definition at line 46 of file vf_tile.c.

Referenced by init().

#define OFFSET

(

x

)

offsetof(TileContext, x)

Definition at line 48 of file vf_tile.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 49 of file vf_tile.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

tile

)

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

static

Definition at line 65 of file vf_tile.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 94 of file vf_tile.c.

static int config_props ( AVFilterLink *  outlink )

static

Definition at line 100 of file vf_tile.c.

static void get_current_tile_pos ( AVFilterContext *  ctx, unsigned *  x, unsigned *  y  )

static

Definition at line 130 of file vf_tile.c.

Referenced by draw_blank_frame(), and filter_frame().

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

static

Definition at line 141 of file vf_tile.c.

Referenced by end_last_frame().

static int end_last_frame ( AVFilterContext *  ctx )

static

Definition at line 153 of file vf_tile.c.

Referenced by filter_frame(), and request_frame().

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

static

Definition at line 171 of file vf_tile.c.

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 208 of file vf_tile.c.

Variable Documentation

const AVOption tile_options[]

static

Initial value:

= {
    { "layout", "set grid size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,
        {.str = "6x5"}, 0, 0, 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 },
    { "nb_frames", "set maximum number of frame to render", OFFSET(nb_frames),
        AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
    {NULL},
}

Definition at line 51 of file vf_tile.c.

const AVFilterPad tile_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .min_perms    = AV_PERM_READ,
    },
    { NULL }
}

Definition at line 228 of file vf_tile.c.

const AVFilterPad tile_outputs[]

static

Initial value:

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

Definition at line 238 of file vf_tile.c.

AVFilter avfilter_vf_tile

Initial value:

= {
    .name          = "tile",
    .description   = NULL_IF_CONFIG_SMALL("Tile several successive frames together."),
    .init          = init,
    .query_formats = query_formats,
    .priv_size     = sizeof(TileContext),
    .inputs        = tile_inputs,
    .outputs       = tile_outputs,
    .priv_class    = &tile_class,
}

Definition at line 248 of file vf_tile.c.