static int filter_frame(AVFilterLink *link, AVFrame *picref) { AVFilterContext *ctx = link->dst; IDETContext *idet = ctx->priv; if (idet->prev) av_frame_free(&idet->prev); idet->prev = idet->cur; idet->cur = idet->next; idet->next = picref; if (!idet->cur) return 0; if (!idet->prev) idet->prev = av_frame_clone(idet->cur); if (!idet->csp) idet->csp = av_pix_fmt_desc_get(link->format); if (idet->csp->comp[0].depth_minus1 / 8 == 1){ idet->filter_line = (ff_idet_filter_func)ff_idet_filter_line_c_16bit; if (ARCH_X86) ff_idet_init_x86(idet, 1); } filter(ctx); return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur)); }