static int amovie_request_frame(AVFilterLink *outlink) { MovieContext *movie = outlink->src->priv; int ret; if (movie->is_done) return AVERROR_EOF; if ((ret = amovie_get_samples(outlink)) < 0) return ret; avfilter_filter_samples(outlink, avfilter_ref_buffer(movie->samplesref, ~0)); avfilter_unref_buffer(movie->samplesref); movie->samplesref = NULL; return 0; }