av_filter_iterate 1702 fftools/cmdutils.c     while ((filter = av_filter_iterate(&opaque))) {
av_filter_iterate  528 libavfilter/allfilters.c     while ((f = av_filter_iterate(&opaque)))
av_filter_iterate  544 libavfilter/allfilters.c     while ((p = (AVFilter*)av_filter_iterate(&i))) {
av_filter_iterate  592 libavfilter/avfilter.c     while (prev && (f = av_filter_iterate(&opaque)))
av_filter_iterate  601 libavfilter/avfilter.c     while ((f = av_filter_iterate(&opaque)))
av_filter_iterate  709 libavfilter/avfilter.h const AVFilter *av_filter_iterate(void **opaque);