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Extend documentation for parse_filter().

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Originally committed as revision 25703 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-11-07 22:47:33 +00:00
parent 3fd3eea7f3
commit 55b2a9ba3b
1 changed files with 12 additions and 1 deletions
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13
libavfilter/graphparser.c
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@ -139,7 +139,18 @@ static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int ind
}
/**
* Parse "filter=params"
* Parse a string of the form FILTER_NAME[=PARAMS], and create a
* corresponding filter instance which is added to graph with
* create_filter().
*
* @param filt_ctx put here a pointer to the created filter context on
* success, NULL otherwise
* @param buf pointer to the buffer to parse, *buf will be updated to
* point to the char next after the parsed string
* @param index an index which is assigned to the created filter
* instance, and which is supposed to be unique for each filter
* instance added to the filtergraph
* @return 0 in case of success, a negative AVERROR code otherwise
*/
static int parse_filter(AVFilterContext **filt_ctx, const char **buf, AVFilterGraph *graph,
int index, AVClass *log_ctx)