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lavfi: add avfilter_default_filter_name()

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The function is modelled after av_default_item_name(), and will print the
name of the instance filter if defined, otherwise the name of the filter.

This allows to show the instance name in the log, which is useful when
debugging complex filter graphs.
This commit is contained in:
Stefano Sabatini
2012-06-01 14:46:54 +02:00
parent 7d82020fcb
commit 4d6a8a2bdb
26 changed files with 38 additions and 119 deletions
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8
libavfilter/avfilter.c
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@@ -366,15 +366,15 @@ static int pad_count(const AVFilterPad *pads)
return count;
}
static const char *filter_name(void *p)
const char *avfilter_default_filter_name(void *filter_ctx)
{
AVFilterContext *filter = p;
return filter->filter->name;
AVFilterContext *ctx = filter_ctx;
return ctx->name ? ctx->name : ctx->filter->name;
}
static const AVClass avfilter_class = {
.class_name = "AVFilter",
.item_name = filter_name,
.item_name = avfilter_default_filter_name,
.version = LIBAVUTIL_VERSION_INT,
.category = AV_CLASS_CATEGORY_FILTER,
};