Mixer::OutputFrameInfo Mixer::get_one_frame_from_each_card(unsigned master_card_index, bool master_card_is_output, CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS], bool has_new_frame[MAX_VIDEO_CARDS], vector<int32_t> raw_audio[MAX_VIDEO_CARDS])
{
OutputFrameInfo output_frame_info;
- constexpr steady_clock::duration master_card_timeout = milliseconds(100);
+ constexpr steady_clock::duration master_card_timeout = milliseconds(200);
start:
unique_lock<mutex> lock(card_mutex, defer_lock);
bool timed_out = false;
return !cards[master_card_index].new_frames.empty() ||
cards[master_card_index].capture->get_disconnected();
});
+ if (timed_out) {
+ fprintf(stderr, "WARNING: Master card (%s) did not deliver a frame for %u ms, creating a fake one.\n",
+ description_for_card(master_card_index).c_str(),
+ unsigned(duration_cast<milliseconds>(master_card_timeout).count()));
+ }
}
if (timed_out) {
- // The master card stalled for 100 ms (possible when it's e.g.
+ // The master card stalled for 200 ms (possible when it's e.g.
// an SRT card). Send a frame no matter what; this also makes sure
// any other cards get to empty their queues, and in general,
// that we make _some_ sort of forward progress.
fractional_samples = num_samples_times_timebase % TIMEBASE;
assert(output_frame_info.num_samples >= 0);
+ if (timed_out) {
+ DeviceSpec device{InputSourceType::CAPTURE_CARD, master_card_index};
+ bool success;
+ do {
+ success = audio_mixer->add_silence(device, output_frame_info.num_samples, /*dropped_frames=*/0);
+ } while (!success);
+ }
+
return output_frame_info;
}