X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Fmixer.cpp;h=0efed5aa2d89137eb1bcc7a3baa2be7895984f04;hb=3d7ae61cc383a344b2458bd47ab13ce436311eb1;hp=a5206c9b3ea48edf27c9d8db2462a8933465927f;hpb=1a7e004368f4f5221e91bf53e17a8c0f7e1ceeb8;p=nageru diff --git a/nageru/mixer.cpp b/nageru/mixer.cpp index a5206c9..0efed5a 100644 --- a/nageru/mixer.cpp +++ b/nageru/mixer.cpp @@ -312,9 +312,8 @@ void QueueLengthPolicy::update_policy(steady_clock::time_point now, metric_input_queue_safe_length_frames = safe_queue_length; } -Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) +Mixer::Mixer(const QSurfaceFormat &format) : httpd(), - num_cards(num_cards), mixer_surface(create_surface(format)), h264_encoder_surface(create_surface(format)), decklink_output_surface(create_surface(format)), @@ -381,11 +380,11 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) } // Must be instantiated after VideoEncoder has initialized global_flags.use_zerocopy. - theme.reset(new Theme(global_flags.theme_filename, global_flags.theme_dirs, resource_pool.get(), num_cards)); + theme.reset(new Theme(global_flags.theme_filename, global_flags.theme_dirs, resource_pool.get())); // Must be instantiated after the theme, as the theme decides the number of FFmpeg inputs. std::vector video_inputs = theme->get_video_inputs(); - audio_mixer.reset(new AudioMixer(num_cards, video_inputs.size())); + audio_mixer.reset(new AudioMixer); httpd.add_endpoint("/channels", bind(&Mixer::get_channels_json, this), HTTPD::ALLOW_ALL_ORIGINS); for (int channel_idx = 0; channel_idx < theme->get_num_channels(); ++channel_idx) { @@ -405,7 +404,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) { IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance(); if (decklink_iterator != nullptr) { - for ( ; card_index < num_cards; ++card_index) { + for ( ; card_index < unsigned(global_flags.max_num_cards); ++card_index) { IDeckLink *decklink; if (decklink_iterator->Next(&decklink) != S_OK) { break; @@ -417,7 +416,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) delete output; output = nullptr; } - configure_card(card_index, capture, CardType::LIVE_CARD, output); + configure_card(card_index, capture, CardType::LIVE_CARD, output, /*is_srt_card=*/false); ++num_pci_devices; } decklink_iterator->Release(); @@ -428,31 +427,44 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) } unsigned num_usb_devices = BMUSBCapture::num_cards(); - for (unsigned usb_card_index = 0; usb_card_index < num_usb_devices && card_index < num_cards; ++usb_card_index, ++card_index) { + for (unsigned usb_card_index = 0; usb_card_index < num_usb_devices && card_index < unsigned(global_flags.max_num_cards); ++usb_card_index, ++card_index) { BMUSBCapture *capture = new BMUSBCapture(usb_card_index); capture->set_card_disconnected_callback(bind(&Mixer::bm_hotplug_remove, this, card_index)); - configure_card(card_index, capture, CardType::LIVE_CARD, /*output=*/nullptr); + configure_card(card_index, capture, CardType::LIVE_CARD, /*output=*/nullptr, /*is_srt_card=*/false); } fprintf(stderr, "Found %u USB card(s).\n", num_usb_devices); + // Fill up with fake cards for as long as we can, so that the FFmpeg + // and HTML cards always come last. unsigned num_fake_cards = 0; - for ( ; card_index < num_cards; ++card_index, ++num_fake_cards) { - FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio); - configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr); +#ifdef HAVE_CEF + size_t num_html_inputs = theme->get_html_inputs().size(); +#else + size_t num_html_inputs = 0; +#endif + for ( ; card_index < MAX_VIDEO_CARDS - video_inputs.size() - num_html_inputs; ++card_index) { + // Only bother to activate fake capture cards to satisfy the minimum. + bool is_active = card_index < unsigned(global_flags.min_num_cards) || cards[card_index].force_active; + if (is_active) { + FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio); + configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr, /*is_srt_card=*/false); + ++num_fake_cards; + } else { + configure_card(card_index, nullptr, CardType::FAKE_CAPTURE, /*output=*/nullptr, /*is_srt_card=*/false); + } } if (num_fake_cards > 0) { fprintf(stderr, "Initialized %u fake cards.\n", num_fake_cards); } - // Initialize all video inputs the theme asked for. Note that these are - // all put _after_ the regular cards, which stop at - 1. + // Initialize all video inputs the theme asked for. for (unsigned video_card_index = 0; video_card_index < video_inputs.size(); ++card_index, ++video_card_index) { if (card_index >= MAX_VIDEO_CARDS) { fprintf(stderr, "ERROR: Not enough card slots available for the videos the theme requested.\n"); abort(); } - configure_card(card_index, video_inputs[video_card_index], CardType::FFMPEG_INPUT, /*output=*/nullptr); + configure_card(card_index, video_inputs[video_card_index], CardType::FFMPEG_INPUT, /*output=*/nullptr, /*is_srt_card=*/false); video_inputs[video_card_index]->set_card_index(card_index); } num_video_inputs = video_inputs.size(); @@ -465,7 +477,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) fprintf(stderr, "ERROR: Not enough card slots available for the HTML inputs the theme requested.\n"); abort(); } - configure_card(card_index, html_inputs[html_card_index], CardType::CEF_INPUT, /*output=*/nullptr); + configure_card(card_index, html_inputs[html_card_index], CardType::CEF_INPUT, /*output=*/nullptr, /*is_srt_card=*/false); html_inputs[html_card_index]->set_card_index(card_index); } num_html_inputs = html_inputs.size(); @@ -480,7 +492,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) } #endif - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { cards[card_index].queue_length_policy.reset(card_index); } @@ -538,8 +550,10 @@ Mixer::~Mixer() httpd.stop(); BMUSBCapture::stop_bm_thread(); - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { - cards[card_index].capture->stop_dequeue_thread(); + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { + if (cards[card_index].capture != nullptr) { // Active. + cards[card_index].capture->stop_dequeue_thread(); + } if (cards[card_index].output) { cards[card_index].output->end_output(); cards[card_index].output.reset(); @@ -551,7 +565,12 @@ Mixer::~Mixer() void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardType card_type, DeckLinkOutput *output, bool is_srt_card) { - printf("Configuring card %d...\n", card_index); + bool is_active = capture != nullptr; + if (is_active) { + printf("Configuring card %d...\n", card_index); + } else { + assert(card_type == CardType::FAKE_CAPTURE); + } CaptureCard *card = &cards[card_index]; if (card->capture != nullptr) { @@ -580,42 +599,48 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardT pixel_format = PixelFormat_8BitYCbCr; } - card->capture->set_frame_callback(bind(&Mixer::bm_frame, this, card_index, _1, _2, _3, _4, _5, _6, _7)); - if (card->frame_allocator == nullptr) { - card->frame_allocator.reset(new PBOFrameAllocator(pixel_format, 8 << 20, global_flags.width, global_flags.height, card_index, mjpeg_encoder.get())); // 8 MB. - } else { - // The format could have changed, but we cannot reset the allocator - // and create a new one from scratch, since there may be allocated - // frames from it that expect to call release_frame() on it. - // Instead, ask the allocator to create new frames for us and discard - // any old ones as they come back. This takes the mutex while - // allocating, but nothing should really be sending frames in there - // right now anyway (start_bm_capture() has not been called yet). - card->frame_allocator->reconfigure(pixel_format, 8 << 20, global_flags.width, global_flags.height, card_index, mjpeg_encoder.get()); - } - card->capture->set_video_frame_allocator(card->frame_allocator.get()); - if (card->surface == nullptr) { - card->surface = create_surface_with_same_format(mixer_surface); - } - while (!card->new_frames.empty()) card->new_frames.pop_front(); - card->last_timecode = -1; - card->capture->set_pixel_format(pixel_format); - card->capture->configure_card(); - - // NOTE: start_bm_capture() happens in thread_func(). + if (is_active) { + card->capture->set_frame_callback(bind(&Mixer::bm_frame, this, card_index, _1, _2, _3, _4, _5, _6, _7)); + if (card->frame_allocator == nullptr) { + card->frame_allocator.reset(new PBOFrameAllocator(pixel_format, 8 << 20, global_flags.width, global_flags.height, card_index, mjpeg_encoder.get())); // 8 MB. + } else { + // The format could have changed, but we cannot reset the allocator + // and create a new one from scratch, since there may be allocated + // frames from it that expect to call release_frame() on it. + // Instead, ask the allocator to create new frames for us and discard + // any old ones as they come back. This takes the mutex while + // allocating, but nothing should really be sending frames in there + // right now anyway (start_bm_capture() has not been called yet). + card->frame_allocator->reconfigure(pixel_format, 8 << 20, global_flags.width, global_flags.height, card_index, mjpeg_encoder.get()); + } + card->capture->set_video_frame_allocator(card->frame_allocator.get()); + if (card->surface == nullptr) { + card->surface = create_surface_with_same_format(mixer_surface); + } + while (!card->new_frames.empty()) card->new_frames.pop_front(); + card->last_timecode = -1; + card->capture->set_pixel_format(pixel_format); + card->capture->configure_card(); + + // NOTE: start_bm_capture() happens in thread_func(). + } if (is_srt_card) { assert(card_type == CardType::FFMPEG_INPUT); } DeviceSpec device; - if (card_type == CardType::FFMPEG_INPUT && !is_srt_card) { - device = DeviceSpec{InputSourceType::FFMPEG_VIDEO_INPUT, card_index - num_cards}; + device = DeviceSpec{InputSourceType::CAPTURE_CARD, card_index}; + audio_mixer->reset_resampler(device); + unsigned num_channels = card_type == CardType::LIVE_CARD ? 8 : 2; + if (is_active) { + audio_mixer->set_device_parameters(device, card->capture->get_description(), card_type, num_channels, /*active=*/true); } else { - device = DeviceSpec{InputSourceType::CAPTURE_CARD, card_index}; + // Note: Keeps the previous name, if any. + char name[32]; + snprintf(name, sizeof(name), "Fake card %u", card_index + 1); + audio_mixer->set_device_parameters(device, name, card_type, num_channels, /*active=*/false); } - audio_mixer->reset_resampler(device); - audio_mixer->set_display_name(device, card->capture->get_description()); audio_mixer->trigger_state_changed_callback(); // Unregister old metrics, if any. @@ -706,117 +731,121 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardT global_metrics.remove_if_exists("srt_receiver_delivery_delay_seconds", labels); } - // Register metrics. - vector> labels; - char card_name[64]; - snprintf(card_name, sizeof(card_name), "%d", card_index); - labels.emplace_back("card", card_name); + if (is_active) { + // Register metrics. + vector> labels; + char card_name[64]; + snprintf(card_name, sizeof(card_name), "%d", card_index); + labels.emplace_back("card", card_name); - switch (card_type) { - case CardType::LIVE_CARD: - labels.emplace_back("cardtype", "live"); - break; - case CardType::FAKE_CAPTURE: - labels.emplace_back("cardtype", "fake"); - break; - case CardType::FFMPEG_INPUT: - if (is_srt_card) { - labels.emplace_back("cardtype", "srt"); - } else { - labels.emplace_back("cardtype", "ffmpeg"); + switch (card_type) { + case CardType::LIVE_CARD: + labels.emplace_back("cardtype", "live"); + break; + case CardType::FAKE_CAPTURE: + labels.emplace_back("cardtype", "fake"); + break; + case CardType::FFMPEG_INPUT: + if (is_srt_card) { + labels.emplace_back("cardtype", "srt"); + } else { + labels.emplace_back("cardtype", "ffmpeg"); + } + break; + case CardType::CEF_INPUT: + labels.emplace_back("cardtype", "cef"); + break; + default: + assert(false); } - break; - case CardType::CEF_INPUT: - labels.emplace_back("cardtype", "cef"); - break; - default: - assert(false); - } - card->jitter_history.register_metrics(labels); - card->queue_length_policy.register_metrics(labels); - global_metrics.add("input_received_frames", labels, &card->metric_input_received_frames); - global_metrics.add("input_dropped_frames_jitter", labels, &card->metric_input_dropped_frames_jitter); - global_metrics.add("input_dropped_frames_error", labels, &card->metric_input_dropped_frames_error); - global_metrics.add("input_dropped_frames_resets", labels, &card->metric_input_resets); - global_metrics.add("input_queue_length_frames", labels, &card->metric_input_queue_length_frames, Metrics::TYPE_GAUGE); - global_metrics.add("input_queue_duped_frames", labels, &card->metric_input_duped_frames); - - global_metrics.add("input_has_signal_bool", labels, &card->metric_input_has_signal_bool, Metrics::TYPE_GAUGE); - global_metrics.add("input_is_connected_bool", labels, &card->metric_input_is_connected_bool, Metrics::TYPE_GAUGE); - global_metrics.add("input_interlaced_bool", labels, &card->metric_input_interlaced_bool, Metrics::TYPE_GAUGE); - global_metrics.add("input_width_pixels", labels, &card->metric_input_width_pixels, Metrics::TYPE_GAUGE); - global_metrics.add("input_height_pixels", labels, &card->metric_input_height_pixels, Metrics::TYPE_GAUGE); - global_metrics.add("input_frame_rate_nom", labels, &card->metric_input_frame_rate_nom, Metrics::TYPE_GAUGE); - global_metrics.add("input_frame_rate_den", labels, &card->metric_input_frame_rate_den, Metrics::TYPE_GAUGE); - global_metrics.add("input_sample_rate_hz", labels, &card->metric_input_sample_rate_hz, Metrics::TYPE_GAUGE); - - if (is_srt_card) { - // Global measurements (counters). - global_metrics.add("srt_uptime_seconds", labels, &card->metric_srt_uptime_seconds); - global_metrics.add("srt_send_duration_seconds", labels, &card->metric_srt_send_duration_seconds); - global_metrics.add("srt_sent_bytes", labels, &card->metric_srt_sent_bytes); - global_metrics.add("srt_received_bytes", labels, &card->metric_srt_received_bytes); - - vector> packet_labels = labels; - packet_labels.emplace_back("type", "normal"); - global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_normal); - global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_normal); - - packet_labels.back().second = "lost"; - global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_lost); - global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_lost); + card->jitter_history.register_metrics(labels); + card->queue_length_policy.register_metrics(labels); + global_metrics.add("input_received_frames", labels, &card->metric_input_received_frames); + global_metrics.add("input_dropped_frames_jitter", labels, &card->metric_input_dropped_frames_jitter); + global_metrics.add("input_dropped_frames_error", labels, &card->metric_input_dropped_frames_error); + global_metrics.add("input_dropped_frames_resets", labels, &card->metric_input_resets); + global_metrics.add("input_queue_length_frames", labels, &card->metric_input_queue_length_frames, Metrics::TYPE_GAUGE); + global_metrics.add("input_queue_duped_frames", labels, &card->metric_input_duped_frames); + + global_metrics.add("input_has_signal_bool", labels, &card->metric_input_has_signal_bool, Metrics::TYPE_GAUGE); + global_metrics.add("input_is_connected_bool", labels, &card->metric_input_is_connected_bool, Metrics::TYPE_GAUGE); + global_metrics.add("input_interlaced_bool", labels, &card->metric_input_interlaced_bool, Metrics::TYPE_GAUGE); + global_metrics.add("input_width_pixels", labels, &card->metric_input_width_pixels, Metrics::TYPE_GAUGE); + global_metrics.add("input_height_pixels", labels, &card->metric_input_height_pixels, Metrics::TYPE_GAUGE); + global_metrics.add("input_frame_rate_nom", labels, &card->metric_input_frame_rate_nom, Metrics::TYPE_GAUGE); + global_metrics.add("input_frame_rate_den", labels, &card->metric_input_frame_rate_den, Metrics::TYPE_GAUGE); + global_metrics.add("input_sample_rate_hz", labels, &card->metric_input_sample_rate_hz, Metrics::TYPE_GAUGE); - packet_labels.back().second = "retransmitted"; - global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_retransmitted); - global_metrics.add("srt_sent_bytes", packet_labels, &card->metric_srt_sent_bytes_retransmitted); - - packet_labels.back().second = "ack"; - global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_ack); - global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_ack); - - packet_labels.back().second = "nak"; - global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_nak); - global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_nak); - - packet_labels.back().second = "dropped"; - global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_dropped); - global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_dropped); - global_metrics.add("srt_sent_bytes", packet_labels, &card->metric_srt_sent_bytes_dropped); - global_metrics.add("srt_received_bytes", packet_labels, &card->metric_srt_received_bytes_dropped); - - packet_labels.back().second = "undecryptable"; - global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_undecryptable); - global_metrics.add("srt_received_bytes", packet_labels, &card->metric_srt_received_bytes_undecryptable); - - global_metrics.add("srt_filter_sent_extra_packets", labels, &card->metric_srt_filter_sent_packets); - global_metrics.add("srt_filter_received_extra_packets", labels, &card->metric_srt_filter_received_extra_packets); - global_metrics.add("srt_filter_received_rebuilt_packets", labels, &card->metric_srt_filter_received_rebuilt_packets); - global_metrics.add("srt_filter_received_lost_packets", labels, &card->metric_srt_filter_received_lost_packets); + if (is_srt_card) { + // Global measurements (counters). + global_metrics.add("srt_uptime_seconds", labels, &card->metric_srt_uptime_seconds); + global_metrics.add("srt_send_duration_seconds", labels, &card->metric_srt_send_duration_seconds); + global_metrics.add("srt_sent_bytes", labels, &card->metric_srt_sent_bytes); + global_metrics.add("srt_received_bytes", labels, &card->metric_srt_received_bytes); + + vector> packet_labels = labels; + packet_labels.emplace_back("type", "normal"); + global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_normal); + global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_normal); + + packet_labels.back().second = "lost"; + global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_lost); + global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_lost); + + packet_labels.back().second = "retransmitted"; + global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_retransmitted); + global_metrics.add("srt_sent_bytes", packet_labels, &card->metric_srt_sent_bytes_retransmitted); + + packet_labels.back().second = "ack"; + global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_ack); + global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_ack); + + packet_labels.back().second = "nak"; + global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_nak); + global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_nak); + + packet_labels.back().second = "dropped"; + global_metrics.add("srt_sent_packets", packet_labels, &card->metric_srt_sent_packets_dropped); + global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_dropped); + global_metrics.add("srt_sent_bytes", packet_labels, &card->metric_srt_sent_bytes_dropped); + global_metrics.add("srt_received_bytes", packet_labels, &card->metric_srt_received_bytes_dropped); + + packet_labels.back().second = "undecryptable"; + global_metrics.add("srt_received_packets", packet_labels, &card->metric_srt_received_packets_undecryptable); + global_metrics.add("srt_received_bytes", packet_labels, &card->metric_srt_received_bytes_undecryptable); + + global_metrics.add("srt_filter_sent_extra_packets", labels, &card->metric_srt_filter_sent_packets); + global_metrics.add("srt_filter_received_extra_packets", labels, &card->metric_srt_filter_received_extra_packets); + global_metrics.add("srt_filter_received_rebuilt_packets", labels, &card->metric_srt_filter_received_rebuilt_packets); + global_metrics.add("srt_filter_received_lost_packets", labels, &card->metric_srt_filter_received_lost_packets); + + // Instant measurements (gauges). + global_metrics.add("srt_packet_sending_period_seconds", labels, &card->metric_srt_packet_sending_period_seconds, Metrics::TYPE_GAUGE); + global_metrics.add("srt_flow_window_packets", labels, &card->metric_srt_flow_window_packets, Metrics::TYPE_GAUGE); + global_metrics.add("srt_congestion_window_packets", labels, &card->metric_srt_congestion_window_packets, Metrics::TYPE_GAUGE); + global_metrics.add("srt_flight_size_packets", labels, &card->metric_srt_flight_size_packets, Metrics::TYPE_GAUGE); + global_metrics.add("srt_rtt_seconds", labels, &card->metric_srt_rtt_seconds, Metrics::TYPE_GAUGE); + global_metrics.add("srt_estimated_bandwidth_bits_per_second", labels, &card->metric_srt_estimated_bandwidth_bits_per_second, Metrics::TYPE_GAUGE); + global_metrics.add("srt_bandwidth_ceiling_bits_per_second", labels, &card->metric_srt_bandwidth_ceiling_bits_per_second, Metrics::TYPE_GAUGE); + global_metrics.add("srt_send_buffer_available_bytes", labels, &card->metric_srt_send_buffer_available_bytes, Metrics::TYPE_GAUGE); + global_metrics.add("srt_receive_buffer_available_bytes", labels, &card->metric_srt_receive_buffer_available_bytes, Metrics::TYPE_GAUGE); + global_metrics.add("srt_mss_bytes", labels, &card->metric_srt_mss_bytes, Metrics::TYPE_GAUGE); + + global_metrics.add("srt_sender_unacked_packets", labels, &card->metric_srt_sender_unacked_packets, Metrics::TYPE_GAUGE); + global_metrics.add("srt_sender_unacked_bytes", labels, &card->metric_srt_sender_unacked_bytes, Metrics::TYPE_GAUGE); + global_metrics.add("srt_sender_unacked_timespan_seconds", labels, &card->metric_srt_sender_unacked_timespan_seconds, Metrics::TYPE_GAUGE); + global_metrics.add("srt_sender_delivery_delay_seconds", labels, &card->metric_srt_sender_delivery_delay_seconds, Metrics::TYPE_GAUGE); + + global_metrics.add("srt_receiver_unacked_packets", labels, &card->metric_srt_receiver_unacked_packets, Metrics::TYPE_GAUGE); + global_metrics.add("srt_receiver_unacked_bytes", labels, &card->metric_srt_receiver_unacked_bytes, Metrics::TYPE_GAUGE); + global_metrics.add("srt_receiver_unacked_timespan_seconds", labels, &card->metric_srt_receiver_unacked_timespan_seconds, Metrics::TYPE_GAUGE); + global_metrics.add("srt_receiver_delivery_delay_seconds", labels, &card->metric_srt_receiver_delivery_delay_seconds, Metrics::TYPE_GAUGE); + } - // Instant measurements (gauges). - global_metrics.add("srt_packet_sending_period_seconds", labels, &card->metric_srt_packet_sending_period_seconds, Metrics::TYPE_GAUGE); - global_metrics.add("srt_flow_window_packets", labels, &card->metric_srt_flow_window_packets, Metrics::TYPE_GAUGE); - global_metrics.add("srt_congestion_window_packets", labels, &card->metric_srt_congestion_window_packets, Metrics::TYPE_GAUGE); - global_metrics.add("srt_flight_size_packets", labels, &card->metric_srt_flight_size_packets, Metrics::TYPE_GAUGE); - global_metrics.add("srt_rtt_seconds", labels, &card->metric_srt_rtt_seconds, Metrics::TYPE_GAUGE); - global_metrics.add("srt_estimated_bandwidth_bits_per_second", labels, &card->metric_srt_estimated_bandwidth_bits_per_second, Metrics::TYPE_GAUGE); - global_metrics.add("srt_bandwidth_ceiling_bits_per_second", labels, &card->metric_srt_bandwidth_ceiling_bits_per_second, Metrics::TYPE_GAUGE); - global_metrics.add("srt_send_buffer_available_bytes", labels, &card->metric_srt_send_buffer_available_bytes, Metrics::TYPE_GAUGE); - global_metrics.add("srt_receive_buffer_available_bytes", labels, &card->metric_srt_receive_buffer_available_bytes, Metrics::TYPE_GAUGE); - global_metrics.add("srt_mss_bytes", labels, &card->metric_srt_mss_bytes, Metrics::TYPE_GAUGE); - - global_metrics.add("srt_sender_unacked_packets", labels, &card->metric_srt_sender_unacked_packets, Metrics::TYPE_GAUGE); - global_metrics.add("srt_sender_unacked_bytes", labels, &card->metric_srt_sender_unacked_bytes, Metrics::TYPE_GAUGE); - global_metrics.add("srt_sender_unacked_timespan_seconds", labels, &card->metric_srt_sender_unacked_timespan_seconds, Metrics::TYPE_GAUGE); - global_metrics.add("srt_sender_delivery_delay_seconds", labels, &card->metric_srt_sender_delivery_delay_seconds, Metrics::TYPE_GAUGE); - - global_metrics.add("srt_receiver_unacked_packets", labels, &card->metric_srt_receiver_unacked_packets, Metrics::TYPE_GAUGE); - global_metrics.add("srt_receiver_unacked_bytes", labels, &card->metric_srt_receiver_unacked_bytes, Metrics::TYPE_GAUGE); - global_metrics.add("srt_receiver_unacked_timespan_seconds", labels, &card->metric_srt_receiver_unacked_timespan_seconds, Metrics::TYPE_GAUGE); - global_metrics.add("srt_receiver_delivery_delay_seconds", labels, &card->metric_srt_receiver_delivery_delay_seconds, Metrics::TYPE_GAUGE); - } - - card->labels = labels; + card->labels = labels; + } else { + card->labels.clear(); + } } void Mixer::set_output_card_internal(int card_index) @@ -852,7 +881,7 @@ void Mixer::set_output_card_internal(int card_index) lock.lock(); card->parked_capture = move(card->capture); CaptureInterface *fake_capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio); - configure_card(card_index, fake_capture, CardType::FAKE_CAPTURE, card->output.release()); + configure_card(card_index, fake_capture, CardType::FAKE_CAPTURE, card->output.release(), /*is_srt_card=*/false); card->queue_length_policy.reset(card_index); card->capture->start_bm_capture(); desired_output_video_mode = output_video_mode = card->output->pick_video_mode(desired_output_video_mode); @@ -874,22 +903,13 @@ int unwrap_timecode(uint16_t current_wrapped, int last) } } -DeviceSpec card_index_to_device(unsigned card_index, unsigned num_cards) -{ - if (card_index >= num_cards) { - return DeviceSpec{InputSourceType::FFMPEG_VIDEO_INPUT, card_index - num_cards}; - } else { - return DeviceSpec{InputSourceType::CAPTURE_CARD, card_index}; - } -} - } // namespace void Mixer::bm_frame(unsigned card_index, uint16_t timecode, FrameAllocator::Frame video_frame, size_t video_offset, VideoFormat video_format, FrameAllocator::Frame audio_frame, size_t audio_offset, AudioFormat audio_format) { - DeviceSpec device = card_index_to_device(card_index, num_cards); + DeviceSpec device{InputSourceType::CAPTURE_CARD, card_index}; CaptureCard *card = &cards[card_index]; ++card->metric_input_received_frames; @@ -926,7 +946,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, size_t num_samples = (audio_frame.len > audio_offset) ? (audio_frame.len - audio_offset) / audio_format.num_channels / (audio_format.bits_per_sample / 8) : 0; if (num_samples > OUTPUT_FREQUENCY / 10 && card->type != CardType::FFMPEG_INPUT) { printf("%s: Dropping frame with implausible audio length (len=%d, offset=%d) [timecode=0x%04x video_len=%d video_offset=%d video_format=%x)\n", - spec_to_string(device).c_str(), int(audio_frame.len), int(audio_offset), + description_for_card(card_index).c_str(), int(audio_frame.len), int(audio_offset), timecode, int(video_frame.len), int(video_offset), video_format.id); if (video_frame.owner) { video_frame.owner->release_frame(video_frame); @@ -948,14 +968,14 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, if (dropped_frames > MAX_FPS * 2) { fprintf(stderr, "%s lost more than two seconds (or time code jumping around; from 0x%04x to 0x%04x), resetting resampler\n", - spec_to_string(device).c_str(), card->last_timecode, timecode); + description_for_card(card_index).c_str(), card->last_timecode, timecode); audio_mixer->reset_resampler(device); dropped_frames = 0; ++card->metric_input_resets; } else if (dropped_frames > 0) { // Insert silence as needed. fprintf(stderr, "%s dropped %d frame(s) (before timecode 0x%04x), inserting silence.\n", - spec_to_string(device).c_str(), dropped_frames, timecode); + description_for_card(card_index).c_str(), dropped_frames, timecode); card->metric_input_dropped_frames_error += dropped_frames; bool success; @@ -1019,7 +1039,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, } #endif - size_t cbcr_width, cbcr_height, cbcr_offset, y_offset; + size_t y_offset, cbcr_offset; size_t expected_length = video_format.stride * (video_format.height + video_format.extra_lines_top + video_format.extra_lines_bottom); if (userdata != nullptr && userdata->pixel_format == PixelFormat_8BitYCbCrPlanar) { // The calculation above is wrong for planar Y'CbCr, so just override it. @@ -1028,22 +1048,18 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, expected_length = video_frame.len; userdata->ycbcr_format = (static_cast(card->capture.get()))->get_current_frame_ycbcr_format(); - cbcr_width = video_format.width / userdata->ycbcr_format.chroma_subsampling_x; - cbcr_height = video_format.height / userdata->ycbcr_format.chroma_subsampling_y; - cbcr_offset = video_format.width * video_format.height; y_offset = 0; + cbcr_offset = video_format.width * video_format.height; } else { // All the other Y'CbCr formats are 4:2:2. - cbcr_width = video_format.width / 2; - cbcr_height = video_format.height; - cbcr_offset = video_offset / 2; y_offset = video_frame.size / 2 + video_offset / 2; + cbcr_offset = video_offset / 2; } if (video_frame.len - video_offset == 0 || video_frame.len - video_offset != expected_length) { if (video_frame.len != 0) { printf("%s: Dropping video frame with wrong length (%zu; expected %zu)\n", - spec_to_string(device).c_str(), video_frame.len - video_offset, expected_length); + description_for_card(card_index).c_str(), video_frame.len - video_offset, expected_length); } if (video_frame.owner) { video_frame.owner->release_frame(video_frame); @@ -1068,19 +1084,14 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, unsigned num_fields = video_format.interlaced ? 2 : 1; steady_clock::time_point frame_upload_start; - bool interlaced_stride = false; if (video_format.interlaced) { // Send the two fields along as separate frames; the other side will need to add // a deinterlacer to actually get this right. assert(video_format.height % 2 == 0); video_format.height /= 2; - cbcr_height /= 2; assert(frame_length % 2 == 0); frame_length /= 2; num_fields = 2; - if (video_format.second_field_start == 1) { - interlaced_stride = true; - } frame_upload_start = steady_clock::now(); } assert(userdata != nullptr); @@ -1091,79 +1102,15 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, userdata->last_frame_rate_den = video_format.frame_rate_den; RefCountedFrame frame(video_frame); - // Upload the textures. + // Send the frames on to the main thread, which will upload and process htem. + // It is entirely possible to upload them in the same thread (and it might even be + // faster, depending on the GPU and driver), but it appears to be trickling + // driver bugs very easily. + // + // Note that this means we must hold on to the actual frame data in + // until the upload is done, but we hold on to much longer than that + // (in fact, all the way until we no longer use the texture in rendering). for (unsigned field = 0; field < num_fields; ++field) { - // Put the actual texture upload in a lambda that is executed in the main thread. - // It is entirely possible to do this in the same thread (and it might even be - // faster, depending on the GPU and driver), but it appears to be trickling - // driver bugs very easily. - // - // Note that this means we must hold on to the actual frame data in - // until the upload command is run, but we hold on to much longer than that - // (in fact, all the way until we no longer use the texture in rendering). - auto upload_func = [this, field, video_format, y_offset, video_offset, cbcr_offset, cbcr_width, cbcr_height, interlaced_stride, userdata]() { - unsigned field_start_line; - if (field == 1) { - field_start_line = video_format.second_field_start; - } else { - field_start_line = video_format.extra_lines_top; - } - - // For anything not FRAME_FORMAT_YCBCR_10BIT, v210_width will be nonsensical but not used. - size_t v210_width = video_format.stride / sizeof(uint32_t); - ensure_texture_resolution(userdata, field, video_format.width, video_format.height, cbcr_width, cbcr_height, v210_width); - - glBindBuffer(GL_PIXEL_UNPACK_BUFFER, userdata->pbo); - check_error(); - - switch (userdata->pixel_format) { - case PixelFormat_10BitYCbCr: { - size_t field_start = video_offset + video_format.stride * field_start_line; - upload_texture(userdata->tex_v210[field], v210_width, video_format.height, video_format.stride, interlaced_stride, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, field_start); - v210_converter->convert(userdata->tex_v210[field], userdata->tex_444[field], video_format.width, video_format.height); - break; - } - case PixelFormat_8BitYCbCr: { - size_t field_y_start = y_offset + video_format.width * field_start_line; - size_t field_cbcr_start = cbcr_offset + cbcr_width * field_start_line * sizeof(uint16_t); - - // Make up our own strides, since we are interleaving. - upload_texture(userdata->tex_y[field], video_format.width, video_format.height, video_format.width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_y_start); - upload_texture(userdata->tex_cbcr[field], cbcr_width, cbcr_height, cbcr_width * sizeof(uint16_t), interlaced_stride, GL_RG, GL_UNSIGNED_BYTE, field_cbcr_start); - break; - } - case PixelFormat_8BitYCbCrPlanar: { - assert(field_start_line == 0); // We don't really support interlaced here. - size_t field_y_start = y_offset; - size_t field_cb_start = cbcr_offset; - size_t field_cr_start = cbcr_offset + cbcr_width * cbcr_height; - - // Make up our own strides, since we are interleaving. - upload_texture(userdata->tex_y[field], video_format.width, video_format.height, video_format.width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_y_start); - upload_texture(userdata->tex_cb[field], cbcr_width, cbcr_height, cbcr_width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_cb_start); - upload_texture(userdata->tex_cr[field], cbcr_width, cbcr_height, cbcr_width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_cr_start); - break; - } - case PixelFormat_8BitBGRA: { - size_t field_start = video_offset + video_format.stride * field_start_line; - upload_texture(userdata->tex_rgba[field], video_format.width, video_format.height, video_format.stride, interlaced_stride, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, field_start); - // These could be asked to deliver mipmaps at any time. - glBindTexture(GL_TEXTURE_2D, userdata->tex_rgba[field]); - check_error(); - glGenerateMipmap(GL_TEXTURE_2D); - check_error(); - glBindTexture(GL_TEXTURE_2D, 0); - check_error(); - break; - } - default: - assert(false); - } - - glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); - check_error(); - }; - if (field == 1) { // Don't upload the second field as fast as we can; wait until // the field time has approximately passed. (Otherwise, we could @@ -1183,12 +1130,13 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, new_frame.length = frame_length; new_frame.field = field; new_frame.interlaced = video_format.interlaced; - new_frame.upload_func = upload_func; new_frame.dropped_frames = dropped_frames; new_frame.received_timestamp = video_frame.received_timestamp; // Ignore the audio timestamp. new_frame.video_format = video_format; + new_frame.video_offset = video_offset; new_frame.y_offset = y_offset; new_frame.cbcr_offset = cbcr_offset; + new_frame.texture_uploaded = false; if (card->type == CardType::FFMPEG_INPUT) { FFmpegCapture *ffmpeg_capture = static_cast(card->capture.get()); new_frame.neutral_color = ffmpeg_capture->get_last_neutral_color(); @@ -1201,6 +1149,87 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, } } +void Mixer::upload_texture_for_frame( + int field, bmusb::VideoFormat video_format, + size_t y_offset, size_t cbcr_offset, size_t video_offset, PBOFrameAllocator::Userdata *userdata) +{ + size_t cbcr_width, cbcr_height; + if (userdata != nullptr && userdata->pixel_format == PixelFormat_8BitYCbCrPlanar) { + cbcr_width = video_format.width / userdata->ycbcr_format.chroma_subsampling_x; + cbcr_height = video_format.height / userdata->ycbcr_format.chroma_subsampling_y; + } else { + // All the other Y'CbCr formats are 4:2:2. + cbcr_width = video_format.width / 2; + cbcr_height = video_format.height; + } + + bool interlaced_stride = video_format.interlaced && (video_format.second_field_start == 1); + if (video_format.interlaced) { + cbcr_height /= 2; + } + + unsigned field_start_line; + if (field == 1) { + field_start_line = video_format.second_field_start; + } else { + field_start_line = video_format.extra_lines_top; + } + + // For anything not FRAME_FORMAT_YCBCR_10BIT, v210_width will be nonsensical but not used. + size_t v210_width = video_format.stride / sizeof(uint32_t); + ensure_texture_resolution(userdata, field, video_format.width, video_format.height, cbcr_width, cbcr_height, v210_width); + + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, userdata->pbo); + check_error(); + + switch (userdata->pixel_format) { + case PixelFormat_10BitYCbCr: { + size_t field_start = video_offset + video_format.stride * field_start_line; + upload_texture(userdata->tex_v210[field], v210_width, video_format.height, video_format.stride, interlaced_stride, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, field_start); + v210_converter->convert(userdata->tex_v210[field], userdata->tex_444[field], video_format.width, video_format.height); + break; + } + case PixelFormat_8BitYCbCr: { + size_t field_y_start = y_offset + video_format.width * field_start_line; + size_t field_cbcr_start = cbcr_offset + cbcr_width * field_start_line * sizeof(uint16_t); + + // Make up our own strides, since we are interleaving. + upload_texture(userdata->tex_y[field], video_format.width, video_format.height, video_format.width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_y_start); + upload_texture(userdata->tex_cbcr[field], cbcr_width, cbcr_height, cbcr_width * sizeof(uint16_t), interlaced_stride, GL_RG, GL_UNSIGNED_BYTE, field_cbcr_start); + break; + } + case PixelFormat_8BitYCbCrPlanar: { + assert(field_start_line == 0); // We don't really support interlaced here. + size_t field_y_start = y_offset; + size_t field_cb_start = cbcr_offset; + size_t field_cr_start = cbcr_offset + cbcr_width * cbcr_height; + + // Make up our own strides, since we are interleaving. + upload_texture(userdata->tex_y[field], video_format.width, video_format.height, video_format.width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_y_start); + upload_texture(userdata->tex_cb[field], cbcr_width, cbcr_height, cbcr_width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_cb_start); + upload_texture(userdata->tex_cr[field], cbcr_width, cbcr_height, cbcr_width, interlaced_stride, GL_RED, GL_UNSIGNED_BYTE, field_cr_start); + break; + } + case PixelFormat_8BitBGRA: { + size_t field_start = video_offset + video_format.stride * field_start_line; + upload_texture(userdata->tex_rgba[field], video_format.width, video_format.height, video_format.stride, interlaced_stride, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, field_start); + // These could be asked to deliver mipmaps at any time. + glBindTexture(GL_TEXTURE_2D, userdata->tex_rgba[field]); + check_error(); + glGenerateMipmap(GL_TEXTURE_2D); + check_error(); + glBindTexture(GL_TEXTURE_2D, 0); + check_error(); + break; + } + default: + assert(false); + } + + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); + check_error(); +} + void Mixer::bm_hotplug_add(libusb_device *dev) { lock_guard lock(hotplug_mutex); @@ -1225,8 +1254,8 @@ void Mixer::thread_func() // Start the actual capture. (We don't want to do it before we're actually ready // to process output frames.) - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { - if (int(card_index) != output_card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { + if (int(card_index) != output_card_index && cards[card_index].capture != nullptr) { cards[card_index].capture->start_bm_capture(); } } @@ -1257,7 +1286,7 @@ void Mixer::thread_func() } else { master_card_is_output = false; master_card_index = theme->map_signal_to_card(master_clock_channel); - assert(master_card_index < num_cards + num_video_inputs); + assert(master_card_index < MAX_VIDEO_CARDS); } handle_hotplugged_cards(); @@ -1267,8 +1296,7 @@ void Mixer::thread_func() schedule_audio_resampling_tasks(output_frame_info.dropped_frames, output_frame_info.num_samples, output_frame_info.frame_duration, output_frame_info.is_preroll, output_frame_info.frame_timestamp); stats_dropped_frames += output_frame_info.dropped_frames; - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { - DeviceSpec device = card_index_to_device(card_index, num_cards); + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { if (card_index == master_card_index || !has_new_frame[card_index]) { continue; } @@ -1277,7 +1305,7 @@ void Mixer::thread_func() } if (new_frames[card_index].dropped_frames > 0) { printf("%s dropped %d frames before this\n", - spec_to_string(device).c_str(), int(new_frames[card_index].dropped_frames)); + description_for_card(card_index).c_str(), int(new_frames[card_index].dropped_frames)); } } @@ -1289,7 +1317,7 @@ void Mixer::thread_func() continue; } - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { if (!has_new_frame[card_index] || new_frames[card_index].frame->len == 0) continue; @@ -1299,9 +1327,10 @@ void Mixer::thread_func() check_error(); // The new texture might need uploading before use. - if (new_frame->upload_func) { - new_frame->upload_func(); - new_frame->upload_func = nullptr; + if (!new_frame->texture_uploaded) { + upload_texture_for_frame(new_frame->field, new_frame->video_format, new_frame->y_offset, new_frame->cbcr_offset, + new_frame->video_offset, (PBOFrameAllocator::Userdata *)new_frame->frame->userdata); + new_frame->texture_uploaded = true; } // Only set the white balance if it actually changed. This means that the user @@ -1461,7 +1490,7 @@ start: goto start; } - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { CaptureCard *card = &cards[card_index]; if (card->new_frames.empty()) { // Starvation. ++card->metric_input_duped_frames; @@ -1495,7 +1524,7 @@ start: output_jitter_history.frame_arrived(output_frame_info.frame_timestamp, output_frame_info.frame_duration, output_frame_info.dropped_frames); } - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { CaptureCard *card = &cards[card_index]; if (has_new_frame[card_index] && !input_card_is_master_clock(card_index, master_card_index) && @@ -1525,17 +1554,28 @@ start: void Mixer::handle_hotplugged_cards() { // Check for cards that have been disconnected since last frame. - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { CaptureCard *card = &cards[card_index]; - if (card->capture->get_disconnected()) { + if (card->capture != nullptr && card->capture->get_disconnected()) { fprintf(stderr, "Card %u went away, replacing with a fake card.\n", card_index); FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio); - configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr); + configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr, /*is_srt_card=*/false); card->queue_length_policy.reset(card_index); card->capture->start_bm_capture(); } } + // Count how many active cards we already have. Used below to check that we + // don't go past the max_cards limit set by the user. Note that (non-SRT) video + // and HTML “cards” don't count towards this limit. + int num_video_cards = 0; + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { + CaptureCard *card = &cards[card_index]; + if (card->type == CardType::LIVE_CARD || is_srt_card(card)) { + ++num_video_cards; + } + } + // Check for cards that have been connected since last frame. vector hotplugged_cards_copy; #ifdef HAVE_SRT @@ -1551,14 +1591,14 @@ void Mixer::handle_hotplugged_cards() for (libusb_device *new_dev : hotplugged_cards_copy) { // Look for a fake capture card where we can stick this in. int free_card_index = -1; - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { if (cards[card_index].is_fake_capture) { free_card_index = card_index; break; } } - if (free_card_index == -1) { + if (free_card_index == -1 || num_video_cards >= global_flags.max_num_cards) { fprintf(stderr, "New card plugged in, but no free slots -- ignoring.\n"); libusb_unref_device(new_dev); } else { @@ -1566,7 +1606,7 @@ void Mixer::handle_hotplugged_cards() fprintf(stderr, "New card plugged in, choosing slot %d.\n", free_card_index); CaptureCard *card = &cards[free_card_index]; BMUSBCapture *capture = new BMUSBCapture(free_card_index, new_dev); - configure_card(free_card_index, capture, CardType::LIVE_CARD, /*output=*/nullptr); + configure_card(free_card_index, capture, CardType::LIVE_CARD, /*output=*/nullptr, /*is_srt_card=*/false); card->queue_length_policy.reset(free_card_index); capture->set_card_disconnected_callback(bind(&Mixer::bm_hotplug_remove, this, free_card_index)); capture->start_bm_capture(); @@ -1575,7 +1615,6 @@ void Mixer::handle_hotplugged_cards() #ifdef HAVE_SRT // Same, for SRT inputs. - // TODO: On disconnect and reconnect, we might want to use the stream ID for (SRTSOCKET sock : hotplugged_srt_cards_copy) { char name[256]; int namelen = sizeof(name); @@ -1587,7 +1626,7 @@ void Mixer::handle_hotplugged_cards() // same stream ID, if any exist -- and it multiple exist, // take the one that disconnected the last. int first_free_card_index = -1, last_matching_free_card_index = -1; - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { CaptureCard *card = &cards[card_index]; if (!card->is_fake_capture) { continue; @@ -1605,7 +1644,7 @@ void Mixer::handle_hotplugged_cards() const int free_card_index = (last_matching_free_card_index != -1) ? last_matching_free_card_index : first_free_card_index; - if (free_card_index == -1) { + if (free_card_index == -1 || num_video_cards >= global_flags.max_num_cards) { if (stream_id.empty()) { stream_id = "no name"; } @@ -1621,7 +1660,7 @@ void Mixer::handle_hotplugged_cards() CaptureCard *card = &cards[free_card_index]; FFmpegCapture *capture = new FFmpegCapture(sock, stream_id); capture->set_card_index(free_card_index); - configure_card(free_card_index, capture, CardType::FFMPEG_INPUT, /*output=*/nullptr, /*override_card_as_live=*/true); + configure_card(free_card_index, capture, CardType::FFMPEG_INPUT, /*output=*/nullptr, /*is_srt_card=*/true); update_srt_stats(sock, card); // Initial zero stats. card->last_srt_stream_id = stream_id; card->queue_length_policy.reset(free_card_index); @@ -1630,13 +1669,23 @@ void Mixer::handle_hotplugged_cards() } } #endif + + // Finally, newly forced-to-active fake capture cards. + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { + CaptureCard *card = &cards[card_index]; + if (card->capture == nullptr && card->force_active) { + FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio); + configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr, /*is_srt_card=*/false); + card->queue_length_policy.reset(card_index); + card->capture->start_bm_capture(); + } + } } void Mixer::schedule_audio_resampling_tasks(unsigned dropped_frames, int num_samples_per_frame, int length_per_frame, bool is_preroll, steady_clock::time_point frame_timestamp) { // Resample the audio as needed, including from previously dropped frames. - assert(num_cards > 0); for (unsigned frame_num = 0; frame_num < dropped_frames + 1; ++frame_num) { const bool dropped_frame = (frame_num != dropped_frames); { @@ -1678,7 +1727,7 @@ void Mixer::render_one_frame(int64_t duration) // Update Y'CbCr settings for all cards. { lock_guard lock(card_mutex); - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < MAX_VIDEO_CARDS; ++card_index) { YCbCrInterpretation *interpretation = &ycbcr_interpretation[card_index]; input_state.ycbcr_coefficients_auto[card_index] = interpretation->ycbcr_coefficients_auto; input_state.ycbcr_coefficients[card_index] = interpretation->ycbcr_coefficients; @@ -1912,7 +1961,11 @@ void Mixer::set_input_ycbcr_interpretation(unsigned card_index, const YCbCrInter void Mixer::start_mode_scanning(unsigned card_index) { - assert(card_index < num_cards); + assert(card_index < MAX_VIDEO_CARDS); + if (cards[card_index].capture != nullptr) { + // Inactive card. Should never happen. + return; + } if (is_mode_scanning[card_index]) { return; } @@ -1936,12 +1989,14 @@ map Mixer::get_available_output_video_modes() const string Mixer::get_ffmpeg_filename(unsigned card_index) const { - assert(card_index >= num_cards && card_index < num_cards + num_video_inputs); + assert(card_index < MAX_VIDEO_CARDS); + assert(cards[card_index].type == CardType::FFMPEG_INPUT); return ((FFmpegCapture *)(cards[card_index].capture.get()))->get_filename(); } void Mixer::set_ffmpeg_filename(unsigned card_index, const string &filename) { - assert(card_index >= num_cards && card_index < num_cards + num_video_inputs); + assert(card_index < MAX_VIDEO_CARDS); + assert(cards[card_index].type == CardType::FFMPEG_INPUT); ((FFmpegCapture *)(cards[card_index].capture.get()))->change_filename(filename); } @@ -2165,4 +2220,44 @@ void Mixer::update_srt_stats(int srt_sock, Mixer::CaptureCard *card) } #endif +string Mixer::description_for_card(unsigned card_index) +{ + CaptureCard *card = &cards[card_index]; + if (card->capture == nullptr) { + // Should never be called for inactive cards, but OK. + char buf[256]; + snprintf(buf, sizeof(buf), "Inactive capture card %u", card_index); + return buf; + } + if (card->type != CardType::FFMPEG_INPUT) { + char buf[256]; + snprintf(buf, sizeof(buf), "Capture card %u (%s)", card_index, card->capture->get_description().c_str()); + return buf; + } + + // Number (non-SRT) FFmpeg inputs from zero, separately from the capture cards, + // since it's not too obvious for the user that they are “cards”. + unsigned ffmpeg_index = 0; + for (unsigned i = 0; i < card_index; ++i) { + CaptureCard *other_card = &cards[i]; + if (other_card->type == CardType::FFMPEG_INPUT && !is_srt_card(other_card)) { + ++ffmpeg_index; + } + } + char buf[256]; + snprintf(buf, sizeof(buf), "Video input %u (%s)", ffmpeg_index, card->capture->get_description().c_str()); + return buf; +} + +bool Mixer::is_srt_card(const Mixer::CaptureCard *card) +{ +#ifdef HAVE_SRT + if (card->type == CardType::FFMPEG_INPUT) { + int srt_sock = static_cast(card->capture.get())->get_srt_sock(); + return srt_sock != -1; + } +#endif + return false; +} + mutex RefCountedGLsync::fence_lock;