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lavfi/tile: allow named arguments.

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This commit is contained in:
Clément Bœsch 2012-11-11 22:36:26 +01:00
parent 5aedee4fac
commit aa5a029091
1 changed files with 22 additions and 7 deletions
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29
libavfilter/vf_tile.c
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@ -23,6 +23,7 @@
* tile video filter
*/
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
@ -31,6 +32,7 @@
#include "internal.h"
typedef struct {
const AVClass *class;
unsigned w, h;
unsigned current;
FFDrawContext draw;
@ -39,17 +41,29 @@ typedef struct {
#define REASONABLE_SIZE 1024
#define OFFSET(x) offsetof(TileContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption tile_options[] = {
{ "layout", "set grid size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,
{.str = "6x5"}, 0, 0, FLAGS },
{NULL},
};
AVFILTER_DEFINE_CLASS(tile);
static av_cold int init(AVFilterContext *ctx, const char *args)
{
TileContext *tile = ctx->priv;
int r;
char dummy;
static const char *shorthand[] = { "layout", NULL };
int ret;
tile->class = &tile_class;
av_opt_set_defaults(tile);
if ((ret = av_opt_set_from_string(tile, args, shorthand, "=", ":")) < 0)
return ret;
if (!args)
args = "6x5";
r = sscanf(args, "%ux%u%c", &tile->w, &tile->h, &dummy);
if (r != 2 || !tile->w || !tile->h)
return AVERROR(EINVAL);
if (tile->w > REASONABLE_SIZE || tile->h > REASONABLE_SIZE) {
av_log(ctx, AV_LOG_ERROR, "Tile size %ux%u is insane.\n",
tile->w, tile->h);
@ -212,4 +226,5 @@ AVFilter avfilter_vf_tile = {
.request_frame = request_frame },
{ .name = NULL }
},
.priv_class = &tile_class,
};