- /**
- * Lists of formats supported by the input and output filters respectively.
- * These lists are used for negotiating the format to actually be used,
- * which will be loaded into the format member, above, when chosen.
- */
- AVFilterFormats *in_formats;
- AVFilterFormats *out_formats;
-
- /**
- * The buffer reference currently being sent across the link by the source
- * filter. This is used internally by the filter system to allow
- * automatic copying of buffers which do not have sufficient permissions
- * for the destination. This should not be accessed directly by the
- * filters.
- */
- AVFilterBufferRef *src_buf;
-
- AVFilterBufferRef *cur_buf;
- AVFilterBufferRef *out_buf;
-