diff options
| -rw-r--r-- | libavfilter/graphparser.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/libavfilter/graphparser.c b/libavfilter/graphparser.c index fe53351662..076b22a83c 100644 --- a/libavfilter/graphparser.c +++ b/libavfilter/graphparser.c @@ -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) |