X-Git-Url: https://git.sesse.net/?p=nageru;a=blobdiff_plain;f=mixer.cpp;h=70175a163c4a2c9a51be1690a9c9c408ac16f81f;hp=b00c4af0ef1a52d03ee2e6cdb453384209acb85a;hb=2f4224d7c48b3b22bcb24eb622fe6705fa16375f;hpb=ba2dc655c098912b8860676596fe89c1305affe9 diff --git a/mixer.cpp b/mixer.cpp index b00c4af..70175a1 100644 --- a/mixer.cpp +++ b/mixer.cpp @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -31,6 +30,7 @@ #include "DeckLinkAPI.h" #include "LinuxCOM.h" #include "alsa_output.h" +#include "basic_stats.h" #include "bmusb/bmusb.h" #include "bmusb/fake_capture.h" #include "chroma_subsampler.h" @@ -39,8 +39,10 @@ #include "decklink_output.h" #include "defs.h" #include "disk_space_estimator.h" +#include "ffmpeg_capture.h" #include "flags.h" #include "input_mapping.h" +#include "metrics.h" #include "pbo_frame_allocator.h" #include "ref_counted_gl_sync.h" #include "resampling_queue.h" @@ -49,6 +51,10 @@ #include "v210_converter.h" #include "video_encoder.h" +#undef Status +#include +#include "json.pb.h" + class IDeckLink; class QOpenGLContext; @@ -59,7 +65,6 @@ using namespace std::placeholders; using namespace bmusb; Mixer *global_mixer = nullptr; -bool uses_mlock = false; namespace { @@ -78,29 +83,42 @@ void insert_new_frame(RefCountedFrame frame, unsigned field_num, bool interlaced } } -void ensure_texture_resolution(PBOFrameAllocator::Userdata *userdata, unsigned field, unsigned width, unsigned height, unsigned v210_width) +void ensure_texture_resolution(PBOFrameAllocator::Userdata *userdata, unsigned field, unsigned width, unsigned height, unsigned cbcr_width, unsigned cbcr_height, unsigned v210_width) { bool first; - if (userdata->pixel_format == bmusb::PixelFormat_10BitYCbCr) { + switch (userdata->pixel_format) { + case PixelFormat_10BitYCbCr: first = userdata->tex_v210[field] == 0 || userdata->tex_444[field] == 0; - } else { + break; + case PixelFormat_8BitYCbCr: first = userdata->tex_y[field] == 0 || userdata->tex_cbcr[field] == 0; + break; + case PixelFormat_8BitBGRA: + first = userdata->tex_rgba[field] == 0; + break; + case PixelFormat_8BitYCbCrPlanar: + first = userdata->tex_y[field] == 0 || userdata->tex_cb[field] == 0 || userdata->tex_cr[field] == 0; + break; + default: + assert(false); } if (first || width != userdata->last_width[field] || - height != userdata->last_height[field]) { + height != userdata->last_height[field] || + cbcr_width != userdata->last_cbcr_width[field] || + cbcr_height != userdata->last_cbcr_height[field]) { // We changed resolution since last use of this texture, so we need to create // a new object. Note that this each card has its own PBOFrameAllocator, // we don't need to worry about these flip-flopping between resolutions. - if (userdata->pixel_format == bmusb::PixelFormat_10BitYCbCr) { + switch (userdata->pixel_format) { + case PixelFormat_10BitYCbCr: glBindTexture(GL_TEXTURE_2D, userdata->tex_444[field]); check_error(); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB10_A2, width, height, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, nullptr); check_error(); - } else { - size_t cbcr_width = width / 2; - + break; + case PixelFormat_8BitYCbCr: { glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr[field]); check_error(); glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, cbcr_width, height, 0, GL_RG, GL_UNSIGNED_BYTE, nullptr); @@ -109,9 +127,38 @@ void ensure_texture_resolution(PBOFrameAllocator::Userdata *userdata, unsigned f check_error(); glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, width, height, 0, GL_RED, GL_UNSIGNED_BYTE, nullptr); check_error(); + break; + } + case PixelFormat_8BitYCbCrPlanar: { + glBindTexture(GL_TEXTURE_2D, userdata->tex_y[field]); + check_error(); + glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, width, height, 0, GL_RED, GL_UNSIGNED_BYTE, nullptr); + check_error(); + glBindTexture(GL_TEXTURE_2D, userdata->tex_cb[field]); + check_error(); + glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, cbcr_width, cbcr_height, 0, GL_RED, GL_UNSIGNED_BYTE, nullptr); + check_error(); + glBindTexture(GL_TEXTURE_2D, userdata->tex_cr[field]); + check_error(); + glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, cbcr_width, cbcr_height, 0, GL_RED, GL_UNSIGNED_BYTE, nullptr); + check_error(); + break; + } + case PixelFormat_8BitBGRA: + glBindTexture(GL_TEXTURE_2D, userdata->tex_rgba[field]); + check_error(); + if (global_flags.can_disable_srgb_decoder) { // See the comments in tweaked_inputs.h. + glTexImage2D(GL_TEXTURE_2D, 0, GL_SRGB8_ALPHA8, width, height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, nullptr); + } else { + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, nullptr); + } + check_error(); + break; } userdata->last_width[field] = width; userdata->last_height[field] = height; + userdata->last_cbcr_width[field] = cbcr_width; + userdata->last_cbcr_height[field] = cbcr_height; } if (global_flags.ten_bit_input && (first || v210_width != userdata->last_v210_width[field])) { @@ -154,29 +201,99 @@ void upload_texture(GLuint tex, GLuint width, GLuint height, GLuint stride, bool } // namespace -void QueueLengthPolicy::update_policy(unsigned queue_length) +void JitterHistory::register_metrics(const vector> &labels) +{ + 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 JitterHistory::unregister_metrics(const vector> &labels) +{ + global_metrics.remove("input_underestimated_jitter_frames", labels); + global_metrics.remove("input_estimated_max_jitter_seconds", labels); +} + +void JitterHistory::frame_arrived(steady_clock::time_point now, int64_t frame_duration, size_t dropped_frames) { - 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); + 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; - 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); } - if (queue_length >= safe_queue_length) { - been_at_safe_point_since_last_starvation = true; + expected_timestamp = now + nanoseconds(frame_duration * 1000000000 / TIMEBASE); +} + +double JitterHistory::estimate_max_jitter() const +{ + if (orders.empty()) { + return 0.0; } - if (++frames_with_at_least_one >= 1000 && safe_queue_length > 1) { - --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; + 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; } } +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) : httpd(), num_cards(num_cards), @@ -185,9 +302,15 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) decklink_output_surface(create_surface(format)), audio_mixer(num_cards) { + memcpy(ycbcr_interpretation, global_flags.ycbcr_interpretation, sizeof(ycbcr_interpretation)); CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF)); check_error(); + // This nearly always should be true. + global_flags.can_disable_srgb_decoder = + epoxy_has_gl_extension("GL_EXT_texture_sRGB_decode") && + epoxy_has_gl_extension("GL_ARB_sampler_objects"); + // Since we allow non-bouncing 4:2:2 YCbCrInputs, effective subpixel precision // will be halved when sampling them, and we need to compensate here. movit_texel_subpixel_precision /= 2.0; @@ -233,8 +356,15 @@ 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)); + httpd.add_endpoint("/channels", bind(&Mixer::get_channels_json, this)); + 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))); + } + // 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. @@ -252,8 +382,11 @@ 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); - configure_card(card_index, capture, /*is_fake_capture=*/false, output); + if (!output->set_device(decklink)) { + delete output; + output = nullptr; + } + configure_card(card_index, capture, CardType::LIVE_CARD, output); ++num_pci_devices; } decklink_iterator->Release(); @@ -267,24 +400,37 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) for (unsigned usb_card_index = 0; usb_card_index < num_usb_devices && card_index < 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, /*is_fake_capture=*/false, /*output=*/nullptr); + configure_card(card_index, capture, CardType::LIVE_CARD, /*output=*/nullptr); } fprintf(stderr, "Found %u USB card(s).\n", num_usb_devices); 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, /*is_fake_capture=*/true, /*output=*/nullptr); + configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr); } 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. + 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"); + exit(1); + } + configure_card(card_index, video_inputs[video_card_index], CardType::FFMPEG_INPUT, /*output=*/nullptr); + video_inputs[video_card_index]->set_card_index(card_index); + } + num_video_inputs = video_inputs.size(); + 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; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { cards[card_index].queue_length_policy.reset(card_index); } @@ -326,13 +472,15 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) desired_output_card_index = global_flags.output_card; set_output_card_internal(global_flags.output_card); } + + output_jitter_history.register_metrics({{ "card", "output" }}); } Mixer::~Mixer() { BMUSBCapture::stop_bm_thread(); - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { { unique_lock lock(card_mutex); cards[card_index].should_quit = true; // Unblock thread. @@ -348,7 +496,7 @@ Mixer::~Mixer() video_encoder.reset(nullptr); } -void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, bool is_fake_capture, DeckLinkOutput *output) +void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, CardType card_type, DeckLinkOutput *output) { printf("Configuring card %d...\n", card_index); @@ -357,12 +505,20 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, bool card->capture->stop_dequeue_thread(); } card->capture.reset(capture); - card->is_fake_capture = is_fake_capture; + card->is_fake_capture = (card_type == CardType::FAKE_CAPTURE); + card->type = card_type; if (card->output.get() != output) { card->output.reset(output); } - bmusb::PixelFormat pixel_format = global_flags.ten_bit_input ? PixelFormat_10BitYCbCr : PixelFormat_8BitYCbCr; + PixelFormat pixel_format; + if (card_type == CardType::FFMPEG_INPUT) { + pixel_format = capture->get_current_pixel_format(); + } else if (global_flags.ten_bit_input) { + pixel_format = PixelFormat_10BitYCbCr; + } else { + 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) { @@ -383,6 +539,66 @@ void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, bool 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: + labels.emplace_back("cardtype", "live"); + break; + case CardType::FAKE_CAPTURE: + labels.emplace_back("cardtype", "fake"); + break; + case CardType::FFMPEG_INPUT: + labels.emplace_back("cardtype", "ffmpeg"); + 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); + card->labels = labels; } void Mixer::set_output_card_internal(int card_index) @@ -399,17 +615,17 @@ void Mixer::set_output_card_internal(int card_index) // Stop the fake card that we put into place. // This needs to _not_ happen under the mutex, to avoid deadlock // (delivering the last frame needs to take the mutex). - bmusb::CaptureInterface *fake_capture = old_card->capture.get(); + CaptureInterface *fake_capture = old_card->capture.get(); 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(); } if (card_index != -1) { CaptureCard *card = &cards[card_index]; - bmusb::CaptureInterface *capture = card->capture.get(); + CaptureInterface *capture = card->capture.get(); // TODO: DeckLinkCapture::stop_dequeue_thread can actually take // several seconds to complete (blocking on DisableVideoInput); // see if we can maybe do it asynchronously. @@ -417,14 +633,15 @@ void Mixer::set_output_card_internal(int card_index) capture->stop_dequeue_thread(); lock.lock(); card->parked_capture = move(card->capture); - bmusb::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, /*is_fake_capture=*/true, card->output.release()); + 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()); 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); card->output->start_output(desired_output_video_mode, pts_int); } output_card_index = card_index; + output_jitter_history.clear(); } namespace { @@ -448,6 +665,16 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, DeviceSpec device{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; + card->metric_input_width_pixels = video_format.width; + card->metric_input_height_pixels = video_format.height; + card->metric_input_frame_rate_nom = video_format.frame_rate_nom; + card->metric_input_frame_rate_den = video_format.frame_rate_den; + card->metric_input_sample_rate_hz = audio_format.sample_rate; + if (is_mode_scanning[card_index]) { if (video_format.has_signal) { // Found a stable signal, so stop scanning. @@ -497,10 +724,12 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, card_index, 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); + card->metric_input_dropped_frames_error += dropped_frames; bool success; do { @@ -508,7 +737,9 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, } 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) { @@ -517,7 +748,28 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, card->last_timecode = timecode; + PBOFrameAllocator::Userdata *userdata = (PBOFrameAllocator::Userdata *)video_frame.userdata; + + size_t cbcr_width, cbcr_height, cbcr_offset, y_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. + assert(card->type == CardType::FFMPEG_INPUT); + assert(video_offset == 0); + 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; + } 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; + } if (video_frame.len - video_offset == 0 || video_frame.len - video_offset != expected_length) { if (video_frame.len != 0) { @@ -539,13 +791,12 @@ 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; } - PBOFrameAllocator::Userdata *userdata = (PBOFrameAllocator::Userdata *)video_frame.userdata; - unsigned num_fields = video_format.interlaced ? 2 : 1; steady_clock::time_point frame_upload_start; bool interlaced_stride = false; @@ -554,6 +805,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, // 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; @@ -570,10 +822,6 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, RefCountedFrame frame(video_frame); // Upload the textures. - const size_t cbcr_width = video_format.width / 2; - const size_t cbcr_offset = video_offset / 2; - const size_t y_offset = video_frame.size / 2 + video_offset / 2; - 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 @@ -583,7 +831,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, // 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, interlaced_stride, userdata]() { + 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; @@ -591,24 +839,55 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, field_start_line = video_format.extra_lines_top; } - // For 8-bit input, v210_width will be nonsensical but not used. + // 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, v210_width); + 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(); - if (userdata->pixel_format == bmusb::PixelFormat_10BitYCbCr) { + 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); - } else { + 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, video_format.height, cbcr_width * sizeof(uint16_t), interlaced_stride, GL_RG, GL_UNSIGNED_BYTE, field_cbcr_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); @@ -638,8 +917,9 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, new_frame.dropped_frames = dropped_frames; new_frame.received_timestamp = video_frame.received_timestamp; // 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->new_frames_changed.notify_all(); } } @@ -667,15 +947,13 @@ 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; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_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); int stats_dropped_frames = 0; while (!should_quit) { @@ -710,7 +988,7 @@ void Mixer::thread_func() handle_hotplugged_cards(); - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { if (card_index == master_card_index || !has_new_frame[card_index]) { continue; } @@ -731,7 +1009,7 @@ void Mixer::thread_func() continue; } - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_inputs; ++card_index) { if (!has_new_frame[card_index] || new_frames[card_index].frame->len == 0) continue; @@ -752,46 +1030,8 @@ void Mixer::thread_func() ++frame_num; pts_int += frame_duration; - now = steady_clock::now(); - double elapsed = duration(now - start).count(); - 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"); - } - + 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); @@ -823,7 +1063,7 @@ 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 @@ -835,18 +1075,17 @@ 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; } @@ -857,6 +1096,9 @@ void Mixer::trim_queue(CaptureCard *card, unsigned card_index) ++dropped_frames; } + card->metric_input_dropped_frames_jitter += dropped_frames; + card->metric_input_queue_length_frames = queue_length; + #if 0 if (dropped_frames > 0) { fprintf(stderr, "Card %u dropped %u frame(s) to keep latency down.\n", @@ -865,6 +1107,24 @@ 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]) { @@ -890,26 +1150,15 @@ 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; ++card_index) { + for (unsigned card_index = 0; card_index < num_cards + num_video_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; } 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(); @@ -918,10 +1167,32 @@ 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; ++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; @@ -940,7 +1211,7 @@ void Mixer::handle_hotplugged_cards() if (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, /*is_fake_capture=*/true, /*output=*/nullptr); + configure_card(card_index, capture, CardType::FAKE_CAPTURE, /*output=*/nullptr); card->queue_length_policy.reset(card_index); card->capture->start_bm_capture(); } @@ -970,7 +1241,7 @@ 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, /*is_fake_capture=*/false, /*output=*/nullptr); + configure_card(free_card_index, capture, CardType::LIVE_CARD, /*output=*/nullptr); 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(); @@ -1021,12 +1292,29 @@ void Mixer::render_one_frame(int64_t duration) printf("Timecode: '%s'\n", timecode_text.c_str()); } + // Update Y'CbCr settings for all cards. + { + unique_lock lock(card_mutex); + for (unsigned card_index = 0; card_index < num_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; + input_state.full_range[card_index] = interpretation->full_range; + } + } + // Get the main chain from the theme, and set its state immediately. Theme::Chain theme_main_chain = theme->get_chain(0, pts(), global_flags.width, global_flags.height, input_state); EffectChain *chain = theme_main_chain.chain; 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(), input_state); + } + // 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; @@ -1131,18 +1419,18 @@ 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)); } } @@ -1216,6 +1504,18 @@ void Mixer::channel_clicked(int preview_num) theme->channel_clicked(preview_num); } +YCbCrInterpretation Mixer::get_input_ycbcr_interpretation(unsigned card_index) const +{ + unique_lock lock(card_mutex); + return ycbcr_interpretation[card_index]; +} + +void Mixer::set_input_ycbcr_interpretation(unsigned card_index, const YCbCrInterpretation &interpretation) +{ + unique_lock lock(card_mutex); + ycbcr_interpretation[card_index] = interpretation; +} + void Mixer::start_mode_scanning(unsigned card_index) { assert(card_index < num_cards); @@ -1233,7 +1533,7 @@ void Mixer::start_mode_scanning(unsigned card_index) last_mode_scan_change[card_index] = steady_clock::now(); } -map Mixer::get_available_output_video_modes() const +map Mixer::get_available_output_video_modes() const { assert(desired_output_card_index != -1); unique_lock lock(card_mutex); @@ -1250,7 +1550,7 @@ 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). @@ -1259,12 +1559,14 @@ 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; - } - if (new_frame_ready_callback) { - new_frame_ready_callback(); + // Call the callbacks under the mutex (they should be short), + // so that we don't race against a callback removal. + for (const auto &key_and_callback : new_frame_ready_callbacks) { + key_and_callback.second(); + } } // Reduce the number of callbacks by filtering duplicates. The reason @@ -1320,7 +1622,7 @@ 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; @@ -1331,9 +1633,16 @@ bool Mixer::OutputChannel::get_display_frame(DisplayFrame *frame) return true; } -void Mixer::OutputChannel::set_frame_ready_callback(Mixer::new_frame_ready_callback_t callback) +void Mixer::OutputChannel::add_frame_ready_callback(void *key, Mixer::new_frame_ready_callback_t callback) { - new_frame_ready_callback = callback; + unique_lock lock(frame_mutex); + new_frame_ready_callbacks[key] = callback; +} + +void Mixer::OutputChannel::remove_frame_ready_callback(void *key) +{ + unique_lock lock(frame_mutex); + new_frame_ready_callbacks.erase(key); } void Mixer::OutputChannel::set_transition_names_updated_callback(Mixer::transition_names_updated_callback_t callback)