- // Translate offset into our stream.
- if (last_pts == -1) {
- pts_offset = start_pts - pts;
- }
- pts = std::max(pts + pts_offset, start_pts);
-
- //fprintf(stderr, "Got a frame from camera %d, pts = %ld, size = %d\n",
- // pkt.stream_index, pts, pkt.size);
- FrameOnDisk frame = write_frame(pkt.stream_index, pts, pkt.data, pkt.size, &db);
-
- post_to_main_thread([pkt, frame] {
- if (pkt.stream_index == 0) {
- global_mainwindow->ui->input1_display->setFrame(pkt.stream_index, frame);
- } else if (pkt.stream_index == 1) {
- global_mainwindow->ui->input2_display->setFrame(pkt.stream_index, frame);
- } else if (pkt.stream_index == 2) {
- global_mainwindow->ui->input3_display->setFrame(pkt.stream_index, frame);
- } else if (pkt.stream_index == 3) {
- global_mainwindow->ui->input4_display->setFrame(pkt.stream_index, frame);
+ while (!should_quit.load()) {
+ AVPacket pkt;
+ unique_ptr<AVPacket, decltype(av_packet_unref)*> pkt_cleanup(
+ &pkt, av_packet_unref);
+ av_init_packet(&pkt);
+ pkt.data = nullptr;
+ pkt.size = 0;
+
+ // TODO: Make it possible to abort av_read_frame() (use an interrupt callback);
+ // right now, should_quit will be ignored if it's hung on I/O.
+ if (av_read_frame(format_ctx.get(), &pkt) != 0) {
+ break;
+ }
+
+ // Convert pts to our own timebase.
+ AVRational stream_timebase = format_ctx->streams[pkt.stream_index]->time_base;
+ int64_t pts = av_rescale_q(pkt.pts, stream_timebase, AVRational{ 1, TIMEBASE });
+
+ // Translate offset into our stream.
+ if (last_pts == -1) {
+ pts_offset = start_pts - pts;