256         ff_thread_await_progress(&f->last_picture, si, 0);  in decode_slice()
843     if (f->last_picture.f)  in decode_frame()
844         ff_thread_release_buffer(avctx, &f->last_picture);  in decode_frame()
845     FFSWAP(ThreadFrame, f->picture, f->last_picture);  in decode_frame()
940         if (fs->slice_damaged && f->last_picture.f->data[0]) {  in decode_frame()
944             ff_thread_await_progress(&f->last_picture, INT_MAX, 0);  in decode_frame()
951                 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *  in decode_frame()
958                 src[1] = f->last_picture.f->data[1];  in decode_frame()
961                           f->last_picture.f->linesize,  in decode_frame()
971     if (f->last_picture.f)  in decode_frame()
972         ff_thread_release_buffer(avctx, &f->last_picture);  in decode_frame()
1021         ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;  in update_thread_context()  local
1031         fdst->last_picture = last_picture;  in update_thread_context()