X-Git-Url: https://git.sesse.net/?p=nageru;a=blobdiff_plain;f=mixer.cpp;h=7a3f437d6ec745048c57be3283005cbf94597937;hp=03caeb3cc63208660c64c983f42f334084bbb3e9;hb=4e3c52ba57c4552a969e71ccdefd9941ce8d6290;hpb=9e054cd044975cd8ec42609564be39099ce19679 diff --git a/mixer.cpp b/mixer.cpp index 03caeb3..7a3f437 100644 --- a/mixer.cpp +++ b/mixer.cpp @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -31,8 +30,12 @@ #include "DeckLinkAPI.h" #include "LinuxCOM.h" #include "alsa_output.h" +#include "basic_stats.h" #include "bmusb/bmusb.h" #include "bmusb/fake_capture.h" +#ifdef HAVE_CEF +#include "cef_capture.h" +#endif #include "chroma_subsampler.h" #include "context.h" #include "decklink_capture.h" @@ -51,6 +54,10 @@ #include "v210_converter.h" #include "video_encoder.h" +#undef Status +#include +#include "json.pb.h" + class IDeckLink; class QOpenGLContext; @@ -61,7 +68,6 @@ using namespace std::placeholders; using namespace bmusb; Mixer *global_mixer = nullptr; -bool uses_mlock = false; namespace { @@ -151,6 +157,8 @@ void ensure_texture_resolution(PBOFrameAllocator::Userdata *userdata, unsigned f } check_error(); break; + default: + assert(false); } userdata->last_width[field] = width; userdata->last_height[field] = height; @@ -198,39 +206,97 @@ void upload_texture(GLuint tex, GLuint width, GLuint height, GLuint stride, bool } // namespace -void QueueLengthPolicy::register_metrics(const string &card_name) +void JitterHistory::register_metrics(const vector> &labels) { - global_metrics.register_int_metric("input_queue_length_frames{" + card_name + "}", &metric_input_queue_length_frames, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric("input_queue_safe_length_frames{" + card_name + "}", &metric_input_queue_safe_length_frames, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric("input_queue_duped_frames{" + card_name + "}", &metric_input_duped_frames); + global_metrics.add("input_underestimated_jitter_frames", labels, &metric_input_underestimated_jitter_frames); + global_metrics.add("input_estimated_max_jitter_seconds", labels, &metric_input_estimated_max_jitter_seconds, Metrics::TYPE_GAUGE); } -void QueueLengthPolicy::update_policy(unsigned queue_length) +void JitterHistory::unregister_metrics(const vector> &labels) { - metric_input_queue_length_frames = queue_length; + global_metrics.remove("input_underestimated_jitter_frames", labels); + global_metrics.remove("input_estimated_max_jitter_seconds", labels); +} - if (queue_length == 0) { // Starvation. - if (been_at_safe_point_since_last_starvation && safe_queue_length < unsigned(global_flags.max_input_queue_frames)) { - ++safe_queue_length; - fprintf(stderr, "Card %u: Starvation, increasing safe limit to %u frame(s)\n", - card_index, safe_queue_length); +void JitterHistory::frame_arrived(steady_clock::time_point now, int64_t frame_duration, size_t dropped_frames) +{ + if (expected_timestamp > steady_clock::time_point::min()) { + expected_timestamp += dropped_frames * nanoseconds(frame_duration * 1000000000 / TIMEBASE); + double jitter_seconds = fabs(duration(expected_timestamp - now).count()); + history.push_back(orders.insert(jitter_seconds)); + if (jitter_seconds > estimate_max_jitter()) { + ++metric_input_underestimated_jitter_frames; } - frames_with_at_least_one = 0; - been_at_safe_point_since_last_starvation = false; - ++metric_input_duped_frames; - metric_input_queue_safe_length_frames = safe_queue_length; - return; + + metric_input_estimated_max_jitter_seconds = estimate_max_jitter(); + + if (history.size() > history_length) { + orders.erase(history.front()); + history.pop_front(); + } + assert(history.size() <= history_length); + } + expected_timestamp = now + nanoseconds(frame_duration * 1000000000 / TIMEBASE); +} + +double JitterHistory::estimate_max_jitter() const +{ + if (orders.empty()) { + return 0.0; } - if (queue_length >= safe_queue_length) { - been_at_safe_point_since_last_starvation = true; + size_t elem_idx = lrint((orders.size() - 1) * percentile); + if (percentile <= 0.5) { + return *next(orders.begin(), elem_idx) * multiplier; + } else { + return *prev(orders.end(), orders.size() - elem_idx) * multiplier; } - if (++frames_with_at_least_one >= 1000 && safe_queue_length > 1) { - --safe_queue_length; - metric_input_queue_safe_length_frames = safe_queue_length; - fprintf(stderr, "Card %u: Spare frames for more than 1000 frames, reducing safe limit to %u frame(s)\n", - card_index, safe_queue_length); - frames_with_at_least_one = 0; +} + +void QueueLengthPolicy::register_metrics(const vector> &labels) +{ + global_metrics.add("input_queue_safe_length_frames", labels, &metric_input_queue_safe_length_frames, Metrics::TYPE_GAUGE); +} + +void QueueLengthPolicy::unregister_metrics(const vector> &labels) +{ + global_metrics.remove("input_queue_safe_length_frames", labels); +} + +void QueueLengthPolicy::update_policy(steady_clock::time_point now, + steady_clock::time_point expected_next_frame, + int64_t input_frame_duration, + int64_t master_frame_duration, + double max_input_card_jitter_seconds, + double max_master_card_jitter_seconds) +{ + double input_frame_duration_seconds = input_frame_duration / double(TIMEBASE); + double master_frame_duration_seconds = master_frame_duration / double(TIMEBASE); + + // Figure out when we can expect the next frame for this card, assuming + // worst-case jitter (ie., the frame is maximally late). + double seconds_until_next_frame = max(duration(expected_next_frame - now).count() + max_input_card_jitter_seconds, 0.0); + + // How many times are the master card expected to tick in that time? + // We assume the master clock has worst-case jitter but not any rate + // discrepancy, ie., it ticks as early as possible every time, but not + // cumulatively. + double frames_needed = (seconds_until_next_frame + max_master_card_jitter_seconds) / master_frame_duration_seconds; + + // As a special case, if the master card ticks faster than the input card, + // we expect the queue to drain by itself even without dropping. But if + // the difference is small (e.g. 60 Hz master and 59.94 input), it would + // go slowly enough that the effect wouldn't really be appreciable. + // We account for this by looking at the situation five frames ahead, + // assuming everything else is the same. + double frames_allowed; + if (master_frame_duration < input_frame_duration) { + frames_allowed = frames_needed + 5 * (input_frame_duration_seconds - master_frame_duration_seconds) / master_frame_duration_seconds; + } else { + frames_allowed = frames_needed; } + + safe_queue_length = max(floor(frames_allowed), 0); + metric_input_queue_safe_length_frames = safe_queue_length; } Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) @@ -238,10 +304,9 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) num_cards(num_cards), mixer_surface(create_surface(format)), h264_encoder_surface(create_surface(format)), - decklink_output_surface(create_surface(format)), - ycbcr_interpretation(global_flags.ycbcr_interpretation), - audio_mixer(num_cards) + decklink_output_surface(create_surface(format)) { + memcpy(ycbcr_interpretation, global_flags.ycbcr_interpretation, sizeof(ycbcr_interpretation)); CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF)); check_error(); @@ -295,8 +360,19 @@ 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)); + // 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())); + + httpd.add_endpoint("/channels", bind(&Mixer::get_channels_json, this), HTTPD::ALLOW_ALL_ORIGINS); + for (int channel_idx = 2; channel_idx < theme->get_num_channels(); ++channel_idx) { + char url[256]; + snprintf(url, sizeof(url), "/channels/%d/color", channel_idx); + httpd.add_endpoint(url, bind(&Mixer::get_channel_color_http, this, unsigned(channel_idx)), HTTPD::ALLOW_ALL_ORIGINS); + } + // Start listening for clients only once VideoEncoder has written its header, if any. - httpd.start(9095); + httpd.start(global_flags.http_port); // First try initializing the then PCI devices, then USB, then // fill up with fake cards until we have the desired number of cards. @@ -314,7 +390,10 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) DeckLinkCapture *capture = new DeckLinkCapture(decklink, card_index); DeckLinkOutput *output = new DeckLinkOutput(resource_pool.get(), decklink_output_surface, global_flags.width, global_flags.height, card_index); - output->set_device(decklink); + if (!output->set_device(decklink)) { + delete output; + output = nullptr; + } configure_card(card_index, capture, CardType::LIVE_CARD, output); ++num_pci_devices; } @@ -345,7 +424,6 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) // Initialize all video inputs the theme asked for. Note that these are // all put _after_ the regular cards, which stop at - 1. - std::vector video_inputs = theme->get_video_inputs(); 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"); @@ -356,10 +434,24 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) } num_video_inputs = video_inputs.size(); +#ifdef HAVE_CEF + // Same, for HTML inputs. + std::vector html_inputs = theme->get_html_inputs(); + for (unsigned html_card_index = 0; html_card_index < html_inputs.size(); ++card_index, ++html_card_index) { + if (card_index >= MAX_VIDEO_CARDS) { + fprintf(stderr, "ERROR: Not enough card slots available for the HTML inputs the theme requested.\n"); + exit(1); + } + configure_card(card_index, html_inputs[html_card_index], CardType::CEF_INPUT, /*output=*/nullptr); + html_inputs[html_card_index]->set_card_index(card_index); + } + num_html_inputs = html_inputs.size(); +#endif + BMUSBCapture::set_card_connected_callback(bind(&Mixer::bm_hotplug_add, this, _1)); BMUSBCapture::start_bm_thread(); - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { cards[card_index].queue_length_policy.reset(card_index); } @@ -402,16 +494,15 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) set_output_card_internal(global_flags.output_card); } - global_metrics.register_int_metric("frames_output_total", &metric_frames_output_total); - global_metrics.register_int_metric("frames_output_dropped", &metric_frames_output_dropped); - global_metrics.register_double_metric("uptime_seconds", &metric_uptime_seconds); + output_jitter_history.register_metrics({{ "card", "output" }}); } Mixer::~Mixer() { + httpd.stop(); BMUSBCapture::stop_bm_thread(); - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { { unique_lock lock(card_mutex); cards[card_index].should_quit = true; // Unblock thread. @@ -437,6 +528,8 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardT } card->capture.reset(capture); card->is_fake_capture = (card_type == CardType::FAKE_CAPTURE); + card->is_cef_capture = (card_type == CardType::CEF_INPUT); + card->may_have_dropped_last_frame = false; card->type = card_type; if (card->output.get() != output) { card->output.reset(output); @@ -445,6 +538,8 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardT PixelFormat pixel_format; if (card_type == CardType::FFMPEG_INPUT) { pixel_format = capture->get_current_pixel_format(); + } else if (card_type == CardType::CEF_INPUT) { + pixel_format = PixelFormat_8BitBGRA; } else if (global_flags.ten_bit_input) { pixel_format = PixelFormat_10BitYCbCr; } else { @@ -466,39 +561,78 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardT // NOTE: start_bm_capture() happens in thread_func(). - DeviceSpec device{InputSourceType::CAPTURE_CARD, card_index}; - audio_mixer.reset_resampler(device); - audio_mixer.set_display_name(device, card->capture->get_description()); - audio_mixer.trigger_state_changed_callback(); + DeviceSpec device; + if (card_type == CardType::FFMPEG_INPUT) { + device = DeviceSpec{InputSourceType::FFMPEG_VIDEO_INPUT, card_index - num_cards}; + } else { + device = DeviceSpec{InputSourceType::CAPTURE_CARD, card_index}; + } + 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. + if (!card->labels.empty()) { + const vector> &labels = card->labels; + card->jitter_history.unregister_metrics(labels); + card->queue_length_policy.unregister_metrics(labels); + global_metrics.remove("input_received_frames", labels); + global_metrics.remove("input_dropped_frames_jitter", labels); + global_metrics.remove("input_dropped_frames_error", labels); + global_metrics.remove("input_dropped_frames_resets", labels); + global_metrics.remove("input_queue_length_frames", labels); + global_metrics.remove("input_queue_duped_frames", labels); + + global_metrics.remove("input_has_signal_bool", labels); + global_metrics.remove("input_is_connected_bool", labels); + global_metrics.remove("input_interlaced_bool", labels); + global_metrics.remove("input_width_pixels", labels); + global_metrics.remove("input_height_pixels", labels); + global_metrics.remove("input_frame_rate_nom", labels); + global_metrics.remove("input_frame_rate_den", labels); + global_metrics.remove("input_sample_rate_hz", labels); + } // 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: - snprintf(card_name, sizeof(card_name), "card=\"%d\",cardtype=\"live\"", card_index); + labels.emplace_back("cardtype", "live"); break; case CardType::FAKE_CAPTURE: - snprintf(card_name, sizeof(card_name), "card=\"%d\",cardtype=\"fake\"", card_index); + labels.emplace_back("cardtype", "fake"); break; case CardType::FFMPEG_INPUT: - snprintf(card_name, sizeof(card_name), "card=\"%d\",cardtype=\"ffmpeg\"", card_index); + labels.emplace_back("cardtype", "ffmpeg"); + break; + case CardType::CEF_INPUT: + labels.emplace_back("cardtype", "cef"); break; default: assert(false); } - card->queue_length_policy.register_metrics(card_name); - global_metrics.register_int_metric(string("input_dropped_frames_jitter{") + card_name + "}", &card->metric_input_dropped_frames_jitter); - global_metrics.register_int_metric(string("input_dropped_frames_error{") + card_name + "}", &card->metric_input_dropped_frames_error); - global_metrics.register_int_metric(string("input_dropped_frames_resets{") + card_name + "}", &card->metric_input_resets); - - global_metrics.register_int_metric(string("input_has_signal_bool{") + card_name + "}", &card->metric_input_has_signal_bool, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_is_connected_bool{") + card_name + "}", &card->metric_input_is_connected_bool, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_interlaced_bool{") + card_name + "}", &card->metric_input_interlaced_bool, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_width_pixels{") + card_name + "}", &card->metric_input_width_pixels, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_height_pixels{") + card_name + "}", &card->metric_input_height_pixels, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_frame_rate_nom{") + card_name + "}", &card->metric_input_frame_rate_nom, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_frame_rate_den{") + card_name + "}", &card->metric_input_frame_rate_den, Metrics::TYPE_GAUGE); - global_metrics.register_int_metric(string("input_sample_rate_hz{") + card_name + "}", &card->metric_input_sample_rate_hz, Metrics::TYPE_GAUGE); + 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); + card->labels = labels; } void Mixer::set_output_card_internal(int card_index) @@ -519,7 +653,7 @@ void Mixer::set_output_card_internal(int card_index) lock.unlock(); fake_capture->stop_dequeue_thread(); lock.lock(); - old_card->capture = move(old_card->parked_capture); + old_card->capture = move(old_card->parked_capture); // TODO: reset the metrics old_card->is_fake_capture = false; old_card->capture->start_bm_capture(); } @@ -541,6 +675,7 @@ void Mixer::set_output_card_internal(int card_index) card->output->start_output(desired_output_video_mode, pts_int); } output_card_index = card_index; + output_jitter_history.clear(); } namespace { @@ -561,9 +696,15 @@ 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{InputSourceType::CAPTURE_CARD, card_index}; + DeviceSpec device; + if (card_index >= num_cards) { + device = DeviceSpec{InputSourceType::FFMPEG_VIDEO_INPUT, card_index - num_cards}; + } else { + device = DeviceSpec{InputSourceType::CAPTURE_CARD, card_index}; + } CaptureCard *card = &cards[card_index]; + ++card->metric_input_received_frames; card->metric_input_has_signal_bool = video_format.has_signal; card->metric_input_is_connected_bool = video_format.is_connected; card->metric_input_interlaced_bool = video_format.interlaced; @@ -595,9 +736,9 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, assert(frame_length > 0); 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) { - printf("Card %d: Dropping frame with implausible audio length (len=%d, offset=%d) [timecode=0x%04x video_len=%d video_offset=%d video_format=%x)\n", - card_index, int(audio_frame.len), int(audio_offset), + 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), timecode, int(video_frame.len), int(video_offset), video_format.id); if (video_frame.owner) { video_frame.owner->release_frame(video_frame); @@ -618,24 +759,26 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, const int silence_samples = OUTPUT_FREQUENCY * video_format.frame_rate_den / video_format.frame_rate_nom; if (dropped_frames > MAX_FPS * 2) { - fprintf(stderr, "Card %d lost more than two seconds (or time code jumping around; from 0x%04x to 0x%04x), resetting resampler\n", - card_index, card->last_timecode, timecode); - audio_mixer.reset_resampler(device); + 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); + audio_mixer->reset_resampler(device); dropped_frames = 0; ++card->metric_input_resets; } else if (dropped_frames > 0) { // Insert silence as needed. - fprintf(stderr, "Card %d dropped %d frame(s) (before timecode 0x%04x), inserting silence.\n", - card_index, dropped_frames, timecode); + fprintf(stderr, "%s dropped %d frame(s) (before timecode 0x%04x), inserting silence.\n", + spec_to_string(device).c_str(), dropped_frames, timecode); card->metric_input_dropped_frames_error += dropped_frames; bool success; do { - success = audio_mixer.add_silence(device, silence_samples, dropped_frames, frame_length); + success = audio_mixer->add_silence(device, silence_samples, dropped_frames, frame_length); } while (!success); } - audio_mixer.add_audio(device, audio_frame.data + audio_offset, num_samples, audio_format, frame_length, audio_frame.received_timestamp); + if (num_samples > 0) { + audio_mixer->add_audio(device, audio_frame.data + audio_offset, num_samples, audio_format, frame_length, audio_frame.received_timestamp); + } // Done with the audio, so release it. if (audio_frame.owner) { @@ -669,8 +812,8 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, if (video_frame.len - video_offset == 0 || video_frame.len - video_offset != expected_length) { if (video_frame.len != 0) { - printf("Card %d: Dropping video frame with wrong length (%ld; expected %ld)\n", - card_index, video_frame.len - video_offset, expected_length); + printf("%s: Dropping video frame with wrong length (%ld; expected %ld)\n", + spec_to_string(device).c_str(), video_frame.len - video_offset, expected_length); } if (video_frame.owner) { video_frame.owner->release_frame(video_frame); @@ -687,8 +830,9 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, new_frame.dropped_frames = dropped_frames; new_frame.received_timestamp = video_frame.received_timestamp; card->new_frames.push_back(move(new_frame)); - card->new_frames_changed.notify_all(); + card->jitter_history.frame_arrived(video_frame.received_timestamp, frame_length, dropped_frames); } + card->new_frames_changed.notify_all(); return; } @@ -812,8 +956,10 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, new_frame.dropped_frames = dropped_frames; new_frame.received_timestamp = video_frame.received_timestamp; // Ignore the audio timestamp. card->new_frames.push_back(move(new_frame)); - card->new_frames_changed.notify_all(); + card->jitter_history.frame_arrived(video_frame.received_timestamp, frame_length, dropped_frames); + card->may_have_dropped_last_frame = false; } + card->new_frames_changed.notify_all(); } } @@ -841,15 +987,13 @@ 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; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { if (int(card_index) != output_card_index) { cards[card_index].capture->start_bm_capture(); } } - steady_clock::time_point start, now; - start = steady_clock::now(); - + BasicStats basic_stats(/*verbose=*/true, /*use_opengl=*/true); int stats_dropped_frames = 0; while (!should_quit) { @@ -875,7 +1019,7 @@ void Mixer::thread_func() } else { master_card_is_output = false; master_card_index = theme->map_signal(master_clock_channel); - assert(master_card_index < num_cards); + assert(master_card_index < num_cards + num_video_inputs); } OutputFrameInfo output_frame_info = get_one_frame_from_each_card(master_card_index, master_card_is_output, new_frames, has_new_frame); @@ -884,7 +1028,7 @@ void Mixer::thread_func() handle_hotplugged_cards(); - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { if (card_index == master_card_index || !has_new_frame[card_index]) { continue; } @@ -905,7 +1049,7 @@ void Mixer::thread_func() continue; } - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { if (!has_new_frame[card_index] || new_frames[card_index].frame->len == 0) continue; @@ -923,54 +1067,15 @@ void Mixer::thread_func() int64_t frame_duration = output_frame_info.frame_duration; render_one_frame(frame_duration); - ++frame_num; - pts_int += frame_duration; - - now = steady_clock::now(); - double elapsed = duration(now - start).count(); - - metric_frames_output_total = frame_num; - metric_frames_output_dropped = stats_dropped_frames; - metric_uptime_seconds = elapsed; - - if (frame_num % 100 == 0) { - printf("%d frames (%d dropped) in %.3f seconds = %.1f fps (%.1f ms/frame)", - frame_num, stats_dropped_frames, elapsed, frame_num / elapsed, - 1e3 * elapsed / frame_num); - // chain->print_phase_timing(); - - // Check our memory usage, to see if we are close to our mlockall() - // limit (if at all set). - rusage used; - if (getrusage(RUSAGE_SELF, &used) == -1) { - perror("getrusage(RUSAGE_SELF)"); - assert(false); - } - - if (uses_mlock) { - rlimit limit; - if (getrlimit(RLIMIT_MEMLOCK, &limit) == -1) { - perror("getrlimit(RLIMIT_MEMLOCK)"); - assert(false); - } - - if (limit.rlim_cur == 0) { - printf(", using %ld MB memory (locked)", - long(used.ru_maxrss / 1024)); - } else { - printf(", using %ld / %ld MB lockable memory (%.1f%%)", - long(used.ru_maxrss / 1024), - long(limit.rlim_cur / 1048576), - float(100.0 * (used.ru_maxrss * 1024.0) / limit.rlim_cur)); - } - } else { - printf(", using %ld MB memory (not locked)", - long(used.ru_maxrss / 1024)); - } - - printf("\n"); + { + lock_guard lock(frame_num_mutex); + ++frame_num; } + frame_num_updated.notify_all(); + pts_int += frame_duration; + basic_stats.update(frame_num, stats_dropped_frames); + // if (frame_num % 100 == 0) chain->print_phase_timing(); if (should_cut.exchange(false)) { // Test and clear. video_encoder->do_cut(frame_num); @@ -1002,7 +1107,7 @@ bool Mixer::input_card_is_master_clock(unsigned card_index, unsigned master_card return (card_index == master_card_index); } -void Mixer::trim_queue(CaptureCard *card, unsigned card_index) +void Mixer::trim_queue(CaptureCard *card, size_t safe_queue_length) { // Count the number of frames in the queue, including any frames // we dropped. It's hard to know exactly how we should deal with @@ -1014,18 +1119,17 @@ void Mixer::trim_queue(CaptureCard *card, unsigned card_index) for (const CaptureCard::NewFrame &frame : card->new_frames) { queue_length += frame.dropped_frames + 1; } - card->queue_length_policy.update_policy(queue_length); // If needed, drop frames until the queue is below the safe limit. // We prefer to drop from the head, because all else being equal, // we'd like more recent frames (less latency). unsigned dropped_frames = 0; - while (queue_length > card->queue_length_policy.get_safe_queue_length()) { + while (queue_length > safe_queue_length) { assert(!card->new_frames.empty()); assert(queue_length > card->new_frames.front().dropped_frames); queue_length -= card->new_frames.front().dropped_frames; - if (queue_length <= card->queue_length_policy.get_safe_queue_length()) { + if (queue_length <= safe_queue_length) { // No need to drop anything. break; } @@ -1034,9 +1138,14 @@ void Mixer::trim_queue(CaptureCard *card, unsigned card_index) card->new_frames_changed.notify_all(); --queue_length; ++dropped_frames; + + if (queue_length == 0 && card->is_cef_capture) { + card->may_have_dropped_last_frame = true; + } } card->metric_input_dropped_frames_jitter += dropped_frames; + card->metric_input_queue_length_frames = queue_length; #if 0 if (dropped_frames > 0) { @@ -1046,6 +1155,24 @@ void Mixer::trim_queue(CaptureCard *card, unsigned card_index) #endif } +pair Mixer::get_channels_json() +{ + Channels ret; + for (int channel_idx = 2; channel_idx < theme->get_num_channels(); ++channel_idx) { + Channel *channel = ret.add_channel(); + channel->set_index(channel_idx); + channel->set_name(theme->get_channel_name(channel_idx)); + channel->set_color(theme->get_channel_color(channel_idx)); + } + string contents; + google::protobuf::util::MessageToJsonString(ret, &contents); // Ignore any errors. + return make_pair(contents, "text/json"); +} + +pair Mixer::get_channel_color_http(unsigned channel_idx) +{ + return make_pair(theme->get_channel_color(channel_idx), "text/plain"); +} 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]) { @@ -1071,26 +1198,25 @@ start: // and then restart. assert(cards[master_card_index].capture->get_disconnected()); handle_hotplugged_cards(); + lock.unlock(); goto start; } - if (!master_card_is_output) { - output_frame_info.frame_timestamp = - cards[master_card_index].new_frames.front().received_timestamp; - } - - for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs + num_html_inputs; ++card_index) { CaptureCard *card = &cards[card_index]; - if (input_card_is_master_clock(card_index, master_card_index)) { - // We don't use the queue length policy for the master card, - // but we will if it stops being the master. Thus, clear out - // the policy in case we switch in the future. - card->queue_length_policy.reset(card_index); - assert(!card->new_frames.empty()); + if (card->new_frames.empty()) { // Starvation. + ++card->metric_input_duped_frames; +#ifdef HAVE_CEF + if (card->is_cef_capture && card->may_have_dropped_last_frame) { + // Unlike other sources, CEF is not guaranteed to send us a steady + // stream of frames, so we'll have to ask it to repaint the frame + // we dropped. (may_have_dropped_last_frame is set whenever we + // trim the queue completely away, and cleared when we actually + // get a new frame.) + ((CEFCapture *)card->capture.get())->request_new_frame(); + } +#endif } else { - trim_queue(card, card_index); - } - if (!card->new_frames.empty()) { new_frames[card_index] = move(card->new_frames.front()); has_new_frame[card_index] = true; card->new_frames.pop_front(); @@ -1099,10 +1225,32 @@ start: } if (!master_card_is_output) { + output_frame_info.frame_timestamp = new_frames[master_card_index].received_timestamp; output_frame_info.dropped_frames = new_frames[master_card_index].dropped_frames; output_frame_info.frame_duration = new_frames[master_card_index].length; } + if (!output_frame_info.is_preroll) { + 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) { + CaptureCard *card = &cards[card_index]; + if (has_new_frame[card_index] && + !input_card_is_master_clock(card_index, master_card_index) && + !output_frame_info.is_preroll) { + card->queue_length_policy.update_policy( + output_frame_info.frame_timestamp, + card->jitter_history.get_expected_next_frame(), + new_frames[master_card_index].length, + output_frame_info.frame_duration, + card->jitter_history.estimate_max_jitter(), + output_jitter_history.estimate_max_jitter()); + trim_queue(card, min(global_flags.max_input_queue_frames, + card->queue_length_policy.get_safe_queue_length())); + } + } + // This might get off by a fractional sample when changing master card // between ones with different frame rates, but that's fine. int num_samples_times_timebase = OUTPUT_FREQUENCY * output_frame_info.frame_duration + fractional_samples; @@ -1219,12 +1367,6 @@ void Mixer::render_one_frame(int64_t duration) theme_main_chain.setup_chain(); //theme_main_chain.chain->enable_phase_timing(true); - // The theme can't (or at least shouldn't!) call connect_signal() on - // each FFmpeg input, so we'll do it here. - for (const pair &conn : theme->get_signal_connections()) { - conn.first->connect_signal_raw(conn.second->get_card_index()); - } - // If HDMI/SDI output is active and the user has requested auto mode, // its mode overrides the existing Y'CbCr setting for the chain. YCbCrLumaCoefficients ycbcr_output_coefficients; @@ -1329,18 +1471,18 @@ void Mixer::render_one_frame(int64_t duration) live_frame.ready_fence = fence; live_frame.input_frames = {}; live_frame.temp_textures = { y_display_tex, cbcr_display_tex }; - output_channel[OUTPUT_LIVE].output_frame(live_frame); + output_channel[OUTPUT_LIVE].output_frame(move(live_frame)); // Set up preview and any additional channels. for (int i = 1; i < theme->get_num_channels() + 2; ++i) { DisplayFrame display_frame; Theme::Chain chain = theme->get_chain(i, pts(), global_flags.width, global_flags.height, input_state); // FIXME: dimensions - display_frame.chain = chain.chain; - display_frame.setup_chain = chain.setup_chain; + display_frame.chain = move(chain.chain); + display_frame.setup_chain = move(chain.setup_chain); display_frame.ready_fence = fence; - display_frame.input_frames = chain.input_frames; + display_frame.input_frames = move(chain.input_frames); display_frame.temp_textures = {}; - output_channel[i].output_frame(display_frame); + output_channel[i].output_frame(move(display_frame)); } } @@ -1363,7 +1505,7 @@ void Mixer::audio_thread_func() ResamplingQueue::RateAdjustmentPolicy rate_adjustment_policy = task.adjust_rate ? ResamplingQueue::ADJUST_RATE : ResamplingQueue::DO_NOT_ADJUST_RATE; - vector samples_out = audio_mixer.get_output( + vector samples_out = audio_mixer->get_output( task.frame_timestamp, task.num_samples, rate_adjustment_policy); @@ -1450,6 +1592,25 @@ map Mixer::get_available_output_video_modes() const return cards[desired_output_card_index].output->get_available_video_modes(); } +string Mixer::get_ffmpeg_filename(unsigned card_index) const +{ + assert(card_index >= num_cards && card_index < num_cards + num_video_inputs); + 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); + ((FFmpegCapture *)(cards[card_index].capture.get()))->change_filename(filename); +} + +void Mixer::wait_for_next_frame() +{ + unique_lock lock(frame_num_mutex); + unsigned old_frame_num = frame_num; + frame_num_updated.wait_for(lock, seconds(1), // Timeout is just in case. + [old_frame_num, this]{ return this->frame_num > old_frame_num; }); +} + Mixer::OutputChannel::~OutputChannel() { if (has_current_frame) { @@ -1460,7 +1621,7 @@ Mixer::OutputChannel::~OutputChannel() } } -void Mixer::OutputChannel::output_frame(DisplayFrame frame) +void Mixer::OutputChannel::output_frame(DisplayFrame &&frame) { // Store this frame for display. Remove the ready frame if any // (it was seemingly never used). @@ -1469,7 +1630,7 @@ void Mixer::OutputChannel::output_frame(DisplayFrame frame) if (has_ready_frame) { parent->release_display_frame(&ready_frame); } - ready_frame = frame; + ready_frame = move(frame); has_ready_frame = true; // Call the callbacks under the mutex (they should be short), @@ -1532,7 +1693,7 @@ bool Mixer::OutputChannel::get_display_frame(DisplayFrame *frame) } if (has_ready_frame) { assert(!has_current_frame); - current_frame = ready_frame; + current_frame = move(ready_frame); ready_frame.ready_fence.reset(); // Drop the refcount. ready_frame.input_frames.clear(); // Drop the refcounts. has_current_frame = true;