+/*
+ * Check whether a packet from ist should be written into ost at this time
+ */
+static int check_output_constraints(InputStream *ist, OutputStream *ost)
+{
+ OutputFile *of = &output_files[ost->file_index];
+ int ist_index = ist - input_streams;
+
+ if (ost->source_index != ist_index)
+ return 0;
+
+ if (of->start_time && ist->pts < of->start_time)
+ return 0;
+
+ if (of->recording_time != INT64_MAX &&
+ av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
+ (AVRational){1, 1000000}) >= 0) {
+ ost->is_past_recording_time = 1;
+ return 0;
+ }
+
+ return 1;
+}
+
+static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
+{
+ OutputFile *of = &output_files[ost->file_index];
+ int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
+ AVPacket opkt;
+
+ av_init_packet(&opkt);
+
+ if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
+ !ost->copy_initial_nonkeyframes)
+ return;
+
+ /* force the input stream PTS */
+ if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ audio_size += pkt->size;
+ else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ video_size += pkt->size;
+ ost->sync_opts++;
+ }
+
+ opkt.stream_index = ost->index;
+ if (pkt->pts != AV_NOPTS_VALUE)
+ opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
+ else
+ opkt.pts = AV_NOPTS_VALUE;
+
+ if (pkt->dts == AV_NOPTS_VALUE)
+ opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
+ else
+ opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
+ opkt.dts -= ost_tb_start_time;
+
+ opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
+ opkt.flags = pkt->flags;
+
+ //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
+ if( ost->st->codec->codec_id != CODEC_ID_H264
+ && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
+ && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
+ ) {
+ if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
+ opkt.destruct = av_destruct_packet;
+ } else {
+ opkt.data = pkt->data;
+ opkt.size = pkt->size;
+ }
+
+ write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
+ ost->st->codec->frame_number++;
+ ost->frame_number++;
+ av_free_packet(&opkt);
+}
+
+static void rate_emu_sleep(InputStream *ist)
+{
+ if (input_files[ist->file_index].rate_emu) {
+ int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
+ int64_t now = av_gettime() - ist->start;
+ if (pts > now)
+ usleep(pts - now);
+ }
+}
+