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lavfi: make AVFilterContext export filter options.

This commit is contained in:
Anton Khirnov 2013-03-13 08:48:16 +01:00
parent 62549f9655
commit 4d1f31ea44
1 changed files with 25 additions and 0 deletions
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25
libavfilter/avfilter.c
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@ -321,10 +321,35 @@ static const char *filter_name(void *p)
return filter->filter->name;
}
static void *filter_child_next(void *obj, void *prev)
{
AVFilterContext *ctx = obj;
if (!prev && ctx->filter && ctx->filter->priv_class && ctx->priv)
return ctx->priv;
return NULL;
}
static const AVClass *filter_child_class_next(const AVClass *prev)
{
AVFilter **f = NULL;
while (prev && *(f = av_filter_next(f)))
if ((*f)->priv_class == prev)
break;
while (*(f = av_filter_next(f)))
if ((*f)->priv_class)
return (*f)->priv_class;
return NULL;
}
static const AVClass avfilter_class = {
.class_name = "AVFilter",
.item_name = filter_name,
.version = LIBAVUTIL_VERSION_INT,
.child_next = filter_child_next,
.child_class_next = filter_child_class_next,
};
int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)