+void filter_packet_callback(Mux *mux, int stream_index, AVBSFContext *bsfctx, const AVPacket *pkt, AVRational timebase)
+{
+ AVPacket *in_pkt = av_packet_clone(pkt);
+ unique_ptr<AVPacket, decltype(av_packet_unref) *> in_pkt_cleanup(in_pkt, av_packet_unref);
+ int err = av_bsf_send_packet(bsfctx, in_pkt);
+ if (err < 0) {
+ fprintf(stderr, "av_bsf_send_packet() failed with %d, ignoring\n", err);
+ }
+ for ( ;; ) {
+ AVPacket out_pkt;
+ unique_ptr<AVPacket, decltype(av_packet_unref) *> pkt_cleanup(&out_pkt, av_packet_unref);
+ av_init_packet(&out_pkt);
+ err = av_bsf_receive_packet(bsfctx, &out_pkt);
+ if (err == AVERROR(EAGAIN)) {
+ break;
+ }
+ if (err < 0) {
+ fprintf(stderr, "av_bsf_receive_packet() failed with %d, ignoring\n", err);
+ return;
+ }
+ mux->add_packet(out_pkt, out_pkt.pts, out_pkt.dts == AV_NOPTS_VALUE ? out_pkt.pts : out_pkt.dts, timebase, stream_index);
+ }
+}
+