X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=mixer.cpp;h=dc9eea63fc0473f99d9260bffb8c99bb10aa485d;hb=c4c5e2df2b1ef88fa20b71ae981ae6462d84b63c;hp=e8c9a758ad4f6c25bd6fb144cc565c1234ff7999;hpb=7d23b62323aba8fa396f6abc617c39e8c634b023;p=nageru diff --git a/mixer.cpp b/mixer.cpp index e8c9a75..dc9eea6 100644 --- a/mixer.cpp +++ b/mixer.cpp @@ -33,7 +33,7 @@ #include "decklink_capture.h" #include "defs.h" #include "flags.h" -#include "h264encode.h" +#include "video_encoder.h" #include "pbo_frame_allocator.h" #include "ref_counted_gl_sync.h" #include "timebase.h" @@ -50,6 +50,7 @@ namespace { void convert_fixed24_to_fp32(float *dst, size_t out_channels, const uint8_t *src, size_t in_channels, size_t num_samples) { + assert(in_channels >= out_channels); for (size_t i = 0; i < num_samples; ++i) { for (size_t j = 0; j < out_channels; ++j) { uint32_t s1 = *src++; @@ -62,6 +63,20 @@ void convert_fixed24_to_fp32(float *dst, size_t out_channels, const uint8_t *src } } +void convert_fixed32_to_fp32(float *dst, size_t out_channels, const uint8_t *src, size_t in_channels, size_t num_samples) +{ + assert(in_channels >= out_channels); + for (size_t i = 0; i < num_samples; ++i) { + for (size_t j = 0; j < out_channels; ++j) { + // Note: Assumes little-endian. + int32_t s = *(int32_t *)src; + dst[i * out_channels + j] = s * (1.0f / 4294967296.0f); + src += 4; + } + src += 4 * (in_channels - out_channels); + } +} + void insert_new_frame(RefCountedFrame frame, unsigned field_num, bool interlaced, unsigned card_index, InputState *input_state) { if (interlaced) { @@ -77,27 +92,37 @@ void insert_new_frame(RefCountedFrame frame, unsigned field_num, bool interlaced } } -string generate_local_dump_filename(int frame) +} // namespace + +void QueueLengthPolicy::update_policy(int queue_length) { - time_t now = time(NULL); - tm now_tm; - localtime_r(&now, &now_tm); - - char timestamp[256]; - strftime(timestamp, sizeof(timestamp), "%F-%T%z", &now_tm); - - // Use the frame number to disambiguate between two cuts starting - // on the same second. - char filename[256]; - snprintf(filename, sizeof(filename), "%s%s-f%02d%s", - LOCAL_DUMP_PREFIX, timestamp, frame % 100, LOCAL_DUMP_SUFFIX); - return filename; + if (queue_length < 0) { // Starvation. + if (been_at_safe_point_since_last_starvation && safe_queue_length < 5) { + ++safe_queue_length; + fprintf(stderr, "Card %u: Starvation, increasing safe limit to %u frames\n", + card_index, safe_queue_length); + } + frames_with_at_least_one = 0; + been_at_safe_point_since_last_starvation = false; + return; + } + if (queue_length > 0) { + if (queue_length >= int(safe_queue_length)) { + been_at_safe_point_since_last_starvation = true; + } + if (++frames_with_at_least_one >= 50 && safe_queue_length > 0) { + --safe_queue_length; + fprintf(stderr, "Card %u: Spare frames for more than 50 frames, reducing safe limit to %u frames\n", + card_index, safe_queue_length); + frames_with_at_least_one = 0; + } + } else { + frames_with_at_least_one = 0; + } } -} // namespace - Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) - : httpd(WIDTH, HEIGHT), + : httpd(), num_cards(num_cards), mixer_surface(create_surface(format)), h264_encoder_surface(create_surface(format)), @@ -106,9 +131,6 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) limiter(OUTPUT_FREQUENCY), compressor(OUTPUT_FREQUENCY) { - httpd.open_output_file(generate_local_dump_filename(/*frame=*/0).c_str()); - httpd.start(9095); - CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF)); check_error(); @@ -117,7 +139,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) movit_texel_subpixel_precision /= 2.0; resource_pool.reset(new ResourcePool); - theme.reset(new Theme("theme.lua", resource_pool.get(), num_cards)); + theme.reset(new Theme(global_flags.theme_filename.c_str(), resource_pool.get(), num_cards)); for (unsigned i = 0; i < NUM_OUTPUTS; ++i) { output_channel[i].parent = this; } @@ -135,7 +157,10 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) display_chain->set_dither_bits(0); // Don't bother. display_chain->finalize(); - h264_encoder.reset(new H264Encoder(h264_encoder_surface, global_flags.va_display, WIDTH, HEIGHT, &httpd)); + video_encoder.reset(new VideoEncoder(h264_encoder_surface, global_flags.va_display, WIDTH, HEIGHT, &httpd)); + + // Start listening for clients only once VideoEncoder has written its header, if any. + httpd.start(9095); // First try initializing the PCI devices, then USB, until we have the desired number of cards. unsigned num_pci_devices = 0, num_usb_devices = 0; @@ -167,6 +192,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) } for (card_index = 0; card_index < num_cards; ++card_index) { + cards[card_index].queue_length_policy.reset(card_index); cards[card_index].capture->start_bm_capture(); } @@ -218,6 +244,14 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards) locut.init(FILTER_HPF, 2); + // If --flat-audio is given, turn off everything that messes with the sound, + // except the final makeup gain. + if (global_flags.flat_audio) { + set_locut_enabled(false); + set_limiter_enabled(false); + set_compressor_enabled(false); + } + // hlen=16 is pretty low quality, but we use quite a bit of CPU otherwise, // and there's a limit to how important the peak meter is. peak_resampler.setup(OUTPUT_FREQUENCY, OUTPUT_FREQUENCY * 4, /*num_channels=*/2, /*hlen=*/16, /*frel=*/1.0); @@ -235,12 +269,12 @@ Mixer::~Mixer() { unique_lock lock(bmusb_mutex); cards[card_index].should_quit = true; // Unblock thread. - cards[card_index].new_data_ready_changed.notify_all(); + cards[card_index].new_frames_changed.notify_all(); } cards[card_index].capture->stop_dequeue_thread(); } - h264_encoder.reset(nullptr); + video_encoder.reset(nullptr); } void Mixer::configure_card(unsigned card_index, const QSurfaceFormat &format, CaptureInterface *capture) @@ -314,9 +348,29 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, { CaptureCard *card = &cards[card_index]; + if (is_mode_scanning[card_index]) { + if (video_format.has_signal) { + // Found a stable signal, so stop scanning. + is_mode_scanning[card_index] = false; + } else { + static constexpr double switch_time_s = 0.5; // Should be enough time for the signal to stabilize. + timespec now; + clock_gettime(CLOCK_MONOTONIC, &now); + double sec_since_last_switch = (now.tv_sec - last_mode_scan_change[card_index].tv_sec) + + 1e-9 * (now.tv_nsec - last_mode_scan_change[card_index].tv_nsec); + if (sec_since_last_switch > switch_time_s) { + // It isn't this mode; try the next one. + mode_scanlist_index[card_index]++; + mode_scanlist_index[card_index] %= mode_scanlist[card_index].size(); + cards[card_index].capture->set_video_mode(mode_scanlist[card_index][mode_scanlist_index[card_index]]); + last_mode_scan_change[card_index] = now; + } + } + } + int64_t frame_length = int64_t(TIMEBASE * video_format.frame_rate_den) / video_format.frame_rate_nom; - size_t num_samples = (audio_frame.len >= audio_offset) ? (audio_frame.len - audio_offset) / 8 / 3 : 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), @@ -340,9 +394,15 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, vector audio; audio.resize(num_samples * 2); switch (audio_format.bits_per_sample) { + case 0: + assert(num_samples == 0); + break; case 24: convert_fixed24_to_fp32(&audio[0], 2, audio_frame.data + audio_offset, audio_format.num_channels, num_samples); break; + case 32: + convert_fixed32_to_fp32(&audio[0], 2, audio_frame.data + audio_offset, audio_format.num_channels, num_samples); + break; default: fprintf(stderr, "Cannot handle audio with %u bits per sample\n", audio_format.bits_per_sample); assert(false); @@ -389,13 +449,6 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, audio_frame.owner->release_frame(audio_frame); } - { - // Wait until the previous frame was consumed. - unique_lock lock(bmusb_mutex); - card->new_data_ready_changed.wait(lock, [card]{ return !card->new_data_ready || card->should_quit; }); - if (card->should_quit) return; - } - size_t expected_length = video_format.width * (video_format.height + video_format.extra_lines_top + video_format.extra_lines_bottom) * 2; if (video_frame.len - video_offset == 0 || video_frame.len - video_offset != expected_length) { @@ -411,13 +464,13 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, // so that pts can go up accordingly. { unique_lock lock(bmusb_mutex); - card->new_data_ready = true; - card->new_frame = RefCountedFrame(FrameAllocator::Frame()); - card->new_frame_length = frame_length; - card->new_frame_interlaced = false; - card->new_data_ready_fence = nullptr; - card->dropped_frames = dropped_frames; - card->new_data_ready_changed.notify_all(); + CaptureCard::NewFrame new_frame; + new_frame.frame = RefCountedFrame(FrameAllocator::Frame()); + new_frame.length = frame_length; + new_frame.interlaced = false; + new_frame.dropped_frames = dropped_frames; + card->new_frames.push(move(new_frame)); + card->new_frames_changed.notify_all(); } return; } @@ -440,7 +493,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, userdata->last_has_signal = video_format.has_signal; userdata->last_frame_rate_nom = video_format.frame_rate_nom; userdata->last_frame_rate_den = video_format.frame_rate_den; - RefCountedFrame new_frame(video_frame); + RefCountedFrame frame(video_frame); // Upload the textures. size_t cbcr_width = video_format.width / 2; @@ -471,26 +524,36 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, GLuint pbo = userdata->pbo; check_error(); - glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo); - check_error(); - glMemoryBarrier(GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT); + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo); check_error(); + 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); + + if (global_flags.flush_pbos) { + glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, field_y_start, video_format.width * video_format.height); + check_error(); + glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, field_cbcr_start, cbcr_width * video_format.height * sizeof(uint16_t)); + check_error(); + } + glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr[field]); check_error(); - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, cbcr_width, video_format.height, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(cbcr_offset + cbcr_width * field_start_line * sizeof(uint16_t))); + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, cbcr_width, video_format.height, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(field_cbcr_start)); check_error(); glBindTexture(GL_TEXTURE_2D, userdata->tex_y[field]); check_error(); - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, video_format.width, video_format.height, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(y_offset + video_format.width * field_start_line)); + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, video_format.width, video_format.height, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(field_y_start)); check_error(); glBindTexture(GL_TEXTURE_2D, 0); check_error(); - glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0); + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); + check_error(); + RefCountedGLsync fence(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0); check_error(); - GLsync fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0); + assert(fence.get() != nullptr); + glFlush(); // Make sure the main thread doesn't have to wait until we push out enough frames to make a new command buffer. check_error(); - assert(fence != nullptr); if (field == 1) { // Don't upload the second field as fast as we can; wait until @@ -513,20 +576,15 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode, { unique_lock lock(bmusb_mutex); - card->new_data_ready = true; - card->new_frame = new_frame; - card->new_frame_length = frame_length; - card->new_frame_field = field; - card->new_frame_interlaced = video_format.interlaced; - card->new_data_ready_fence = fence; - card->dropped_frames = dropped_frames; - card->new_data_ready_changed.notify_all(); - - if (field != num_fields - 1) { - // Wait until the previous frame was consumed. - card->new_data_ready_changed.wait(lock, [card]{ return !card->new_data_ready || card->should_quit; }); - if (card->should_quit) return; - } + CaptureCard::NewFrame new_frame; + new_frame.frame = frame; + new_frame.length = frame_length; + new_frame.field = field; + new_frame.interlaced = video_format.interlaced; + new_frame.ready_fence = fence; + new_frame.dropped_frames = dropped_frames; + card->new_frames.push(move(new_frame)); + card->new_frames_changed.notify_all(); } } } @@ -547,162 +605,63 @@ void Mixer::thread_func() int stats_dropped_frames = 0; while (!should_quit) { - CaptureCard card_copy[MAX_CARDS]; - int num_samples[MAX_CARDS]; + CaptureCard::NewFrame new_frames[MAX_CARDS]; + bool has_new_frame[MAX_CARDS] = { false }; + int num_samples[MAX_CARDS] = { 0 }; - { - unique_lock lock(bmusb_mutex); + // TODO: Add a timeout. + unsigned master_card_index = theme->map_signal(master_clock_channel); + assert(master_card_index < num_cards); - // The first card is the master timer, so wait for it to have a new frame. - // TODO: Make configurable, and with a timeout. - cards[0].new_data_ready_changed.wait(lock, [this]{ return cards[0].new_data_ready; }); - - for (unsigned card_index = 0; card_index < num_cards; ++card_index) { - CaptureCard *card = &cards[card_index]; - card_copy[card_index].new_data_ready = card->new_data_ready; - card_copy[card_index].new_frame = card->new_frame; - card_copy[card_index].new_frame_length = card->new_frame_length; - card_copy[card_index].new_frame_field = card->new_frame_field; - card_copy[card_index].new_frame_interlaced = card->new_frame_interlaced; - card_copy[card_index].new_data_ready_fence = card->new_data_ready_fence; - card_copy[card_index].dropped_frames = card->dropped_frames; - card->new_data_ready = false; - card->new_data_ready_changed.notify_all(); - - int num_samples_times_timebase = OUTPUT_FREQUENCY * card->new_frame_length + card->fractional_samples; - num_samples[card_index] = num_samples_times_timebase / TIMEBASE; - card->fractional_samples = num_samples_times_timebase % TIMEBASE; - assert(num_samples[card_index] >= 0); - } - } + get_one_frame_from_each_card(master_card_index, new_frames, has_new_frame, num_samples); + schedule_audio_resampling_tasks(new_frames[master_card_index].dropped_frames, num_samples[master_card_index], new_frames[master_card_index].length); + stats_dropped_frames += new_frames[master_card_index].dropped_frames; + send_audio_level_callback(); - // Resample the audio as needed, including from previously dropped frames. - assert(num_cards > 0); - for (unsigned frame_num = 0; frame_num < card_copy[0].dropped_frames + 1; ++frame_num) { - { - // Signal to the audio thread to process this frame. - unique_lock lock(audio_mutex); - audio_task_queue.push(AudioTask{pts_int, num_samples[0]}); - audio_task_queue_changed.notify_one(); - } - if (frame_num != card_copy[0].dropped_frames) { - // For dropped frames, increase the pts. Note that if the format changed - // in the meantime, we have no way of detecting that; we just have to - // assume the frame length is always the same. - ++stats_dropped_frames; - pts_int += card_copy[0].new_frame_length; + for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + if (card_index == master_card_index || !has_new_frame[card_index]) { + continue; } - } - - if (audio_level_callback != nullptr) { - unique_lock lock(compressor_mutex); - double loudness_s = r128.loudness_S(); - double loudness_i = r128.integrated(); - double loudness_range_low = r128.range_min(); - double loudness_range_high = r128.range_max(); - - audio_level_callback(loudness_s, 20.0 * log10(peak), - loudness_i, loudness_range_low, loudness_range_high, - gain_staging_db, 20.0 * log10(final_makeup_gain), - correlation.get_correlation()); - } - - for (unsigned card_index = 1; card_index < num_cards; ++card_index) { - if (card_copy[card_index].new_data_ready && card_copy[card_index].new_frame->len == 0) { - ++card_copy[card_index].dropped_frames; + if (new_frames[card_index].frame->len == 0) { + ++new_frames[card_index].dropped_frames; } - if (card_copy[card_index].dropped_frames > 0) { + if (new_frames[card_index].dropped_frames > 0) { printf("Card %u dropped %d frames before this\n", - card_index, int(card_copy[card_index].dropped_frames)); + card_index, int(new_frames[card_index].dropped_frames)); } } // If the first card is reporting a corrupted or otherwise dropped frame, // just increase the pts (skipping over this frame) and don't try to compute anything new. - if (card_copy[0].new_frame->len == 0) { + if (new_frames[master_card_index].frame->len == 0) { ++stats_dropped_frames; - pts_int += card_copy[0].new_frame_length; + pts_int += new_frames[master_card_index].length; continue; } for (unsigned card_index = 0; card_index < num_cards; ++card_index) { - CaptureCard *card = &card_copy[card_index]; - if (!card->new_data_ready || card->new_frame->len == 0) + if (!has_new_frame[card_index] || new_frames[card_index].frame->len == 0) continue; - assert(card->new_frame != nullptr); - insert_new_frame(card->new_frame, card->new_frame_field, card->new_frame_interlaced, card_index, &input_state); + CaptureCard::NewFrame *new_frame = &new_frames[card_index]; + assert(new_frame->frame != nullptr); + insert_new_frame(new_frame->frame, new_frame->field, new_frame->interlaced, card_index, &input_state); check_error(); // The new texture might still be uploaded, // tell the GPU to wait until it's there. - if (card->new_data_ready_fence) { - glWaitSync(card->new_data_ready_fence, /*flags=*/0, GL_TIMEOUT_IGNORED); + if (new_frame->ready_fence) { + glWaitSync(new_frame->ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED); check_error(); - glDeleteSync(card->new_data_ready_fence); + new_frame->ready_fence.reset(); check_error(); } } - // Get the main chain from the theme, and set its state immediately. - Theme::Chain theme_main_chain = theme->get_chain(0, pts(), WIDTH, HEIGHT, input_state); - EffectChain *chain = theme_main_chain.chain; - theme_main_chain.setup_chain(); - //theme_main_chain.chain->enable_phase_timing(true); - - GLuint y_tex, cbcr_tex; - bool got_frame = h264_encoder->begin_frame(&y_tex, &cbcr_tex); - assert(got_frame); - - // Render main chain. - GLuint cbcr_full_tex = resource_pool->create_2d_texture(GL_RG8, WIDTH, HEIGHT); - GLuint rgba_tex = resource_pool->create_2d_texture(GL_RGB565, WIDTH, HEIGHT); // Saves texture bandwidth, although dithering gets messed up. - GLuint fbo = resource_pool->create_fbo(y_tex, cbcr_full_tex, rgba_tex); - check_error(); - chain->render_to_fbo(fbo, WIDTH, HEIGHT); - resource_pool->release_fbo(fbo); - - subsample_chroma(cbcr_full_tex, cbcr_tex); - resource_pool->release_2d_texture(cbcr_full_tex); - - // Set the right state for rgba_tex. - glBindFramebuffer(GL_FRAMEBUFFER, 0); - glBindTexture(GL_TEXTURE_2D, rgba_tex); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - - RefCountedGLsync fence(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0); - check_error(); - - const int64_t av_delay = TIMEBASE / 10; // Corresponds to the fixed delay in resampling_queue.h. TODO: Make less hard-coded. - h264_encoder->end_frame(fence, pts_int + av_delay, theme_main_chain.input_frames); + int64_t duration = new_frames[master_card_index].length; + render_one_frame(duration); ++frame; - pts_int += card_copy[0].new_frame_length; - - // The live frame just shows the RGBA texture we just rendered. - // It owns rgba_tex now. - DisplayFrame live_frame; - live_frame.chain = display_chain.get(); - live_frame.setup_chain = [this, rgba_tex]{ - display_input->set_texture_num(rgba_tex); - }; - live_frame.ready_fence = fence; - live_frame.input_frames = {}; - live_frame.temp_textures = { rgba_tex }; - output_channel[OUTPUT_LIVE].output_frame(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(), WIDTH, HEIGHT, input_state); // FIXME: dimensions - display_frame.chain = chain.chain; - display_frame.setup_chain = chain.setup_chain; - display_frame.ready_fence = fence; - display_frame.input_frames = chain.input_frames; - display_frame.temp_textures = {}; - output_channel[i].output_frame(display_frame); - } + pts_int += duration; clock_gettime(CLOCK_MONOTONIC, &now); double elapsed = now.tv_sec - start.tv_sec + @@ -715,12 +674,7 @@ void Mixer::thread_func() } if (should_cut.exchange(false)) { // Test and clear. - string filename = generate_local_dump_filename(frame); - printf("Starting new recording: %s\n", filename.c_str()); - h264_encoder->shutdown(); - httpd.close_output_file(); - httpd.open_output_file(filename.c_str()); - h264_encoder.reset(new H264Encoder(h264_encoder_surface, global_flags.va_display, WIDTH, HEIGHT, &httpd)); + video_encoder->do_cut(frame); } #if 0 @@ -739,6 +693,141 @@ void Mixer::thread_func() resource_pool->clean_context(); } +void Mixer::get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_CARDS], bool has_new_frame[MAX_CARDS], int num_samples[MAX_CARDS]) +{ + // The first card is the master timer, so wait for it to have a new frame. + unique_lock lock(bmusb_mutex); + cards[master_card_index].new_frames_changed.wait(lock, [this, master_card_index]{ return !cards[master_card_index].new_frames.empty(); }); + + for (unsigned card_index = 0; card_index < num_cards; ++card_index) { + CaptureCard *card = &cards[card_index]; + if (card->new_frames.empty()) { + assert(card_index != master_card_index); + card->queue_length_policy.update_policy(-1); + continue; + } + new_frames[card_index] = move(card->new_frames.front()); + has_new_frame[card_index] = true; + card->new_frames.pop(); + card->new_frames_changed.notify_all(); + + int num_samples_times_timebase = OUTPUT_FREQUENCY * new_frames[card_index].length + card->fractional_samples; + num_samples[card_index] = num_samples_times_timebase / TIMEBASE; + card->fractional_samples = num_samples_times_timebase % TIMEBASE; + assert(num_samples[card_index] >= 0); + + if (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); + } else { + // If we have excess frames compared to the policy for this card, + // drop frames from the head. + card->queue_length_policy.update_policy(card->new_frames.size()); + while (card->new_frames.size() > card->queue_length_policy.get_safe_queue_length()) { + card->new_frames.pop(); + } + } + } +} + +void Mixer::schedule_audio_resampling_tasks(unsigned dropped_frames, int num_samples_per_frame, int length_per_frame) +{ + // 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) { + { + // Signal to the audio thread to process this frame. + unique_lock lock(audio_mutex); + audio_task_queue.push(AudioTask{pts_int, num_samples_per_frame}); + audio_task_queue_changed.notify_one(); + } + if (frame_num != dropped_frames) { + // For dropped frames, increase the pts. Note that if the format changed + // in the meantime, we have no way of detecting that; we just have to + // assume the frame length is always the same. + pts_int += length_per_frame; + } + } +} + +void Mixer::render_one_frame(int64_t duration) +{ + // Get the main chain from the theme, and set its state immediately. + Theme::Chain theme_main_chain = theme->get_chain(0, pts(), WIDTH, HEIGHT, input_state); + EffectChain *chain = theme_main_chain.chain; + theme_main_chain.setup_chain(); + //theme_main_chain.chain->enable_phase_timing(true); + + GLuint y_tex, cbcr_tex; + bool got_frame = video_encoder->begin_frame(&y_tex, &cbcr_tex); + assert(got_frame); + + // Render main chain. + GLuint cbcr_full_tex = resource_pool->create_2d_texture(GL_RG8, WIDTH, HEIGHT); + GLuint rgba_tex = resource_pool->create_2d_texture(GL_RGB565, WIDTH, HEIGHT); // Saves texture bandwidth, although dithering gets messed up. + GLuint fbo = resource_pool->create_fbo(y_tex, cbcr_full_tex, rgba_tex); + check_error(); + chain->render_to_fbo(fbo, WIDTH, HEIGHT); + resource_pool->release_fbo(fbo); + + subsample_chroma(cbcr_full_tex, cbcr_tex); + resource_pool->release_2d_texture(cbcr_full_tex); + + // Set the right state for rgba_tex. + glBindFramebuffer(GL_FRAMEBUFFER, 0); + glBindTexture(GL_TEXTURE_2D, rgba_tex); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + + const int64_t av_delay = TIMEBASE / 10; // Corresponds to the fixed delay in resampling_queue.h. TODO: Make less hard-coded. + RefCountedGLsync fence = video_encoder->end_frame(pts_int + av_delay, duration, theme_main_chain.input_frames); + + // The live frame just shows the RGBA texture we just rendered. + // It owns rgba_tex now. + DisplayFrame live_frame; + live_frame.chain = display_chain.get(); + live_frame.setup_chain = [this, rgba_tex]{ + display_input->set_texture_num(rgba_tex); + }; + live_frame.ready_fence = fence; + live_frame.input_frames = {}; + live_frame.temp_textures = { rgba_tex }; + output_channel[OUTPUT_LIVE].output_frame(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(), WIDTH, HEIGHT, input_state); // FIXME: dimensions + display_frame.chain = chain.chain; + display_frame.setup_chain = chain.setup_chain; + display_frame.ready_fence = fence; + display_frame.input_frames = chain.input_frames; + display_frame.temp_textures = {}; + output_channel[i].output_frame(display_frame); + } +} + +void Mixer::send_audio_level_callback() +{ + if (audio_level_callback == nullptr) { + return; + } + + unique_lock lock(compressor_mutex); + double loudness_s = r128.loudness_S(); + double loudness_i = r128.integrated(); + double loudness_range_low = r128.range_min(); + double loudness_range_high = r128.range_max(); + + audio_level_callback(loudness_s, 20.0 * log10(peak), + loudness_i, loudness_range_low, loudness_range_high, + gain_staging_db, 20.0 * log10(final_makeup_gain), + correlation.get_correlation()); +} + void Mixer::audio_thread_func() { while (!should_quit) { @@ -915,7 +1004,7 @@ void Mixer::process_audio_one_frame(int64_t frame_pts_int, int num_samples) } // And finally add them to the output. - h264_encoder->add_audio(frame_pts_int, move(samples_out)); + video_encoder->add_audio(frame_pts_int, move(samples_out)); } void Mixer::subsample_chroma(GLuint src_tex, GLuint dst_tex) @@ -1019,6 +1108,23 @@ void Mixer::reset_meters() correlation.reset(); } +void Mixer::start_mode_scanning(unsigned card_index) +{ + assert(card_index < num_cards); + if (is_mode_scanning[card_index]) { + return; + } + is_mode_scanning[card_index] = true; + mode_scanlist[card_index].clear(); + for (const auto &mode : cards[card_index].capture->get_available_video_modes()) { + mode_scanlist[card_index].push_back(mode.first); + } + assert(!mode_scanlist[card_index].empty()); + mode_scanlist_index[card_index] = 0; + cards[card_index].capture->set_video_mode(mode_scanlist[card_index][0]); + clock_gettime(CLOCK_MONOTONIC, &last_mode_scan_change[card_index]); +} + Mixer::OutputChannel::~OutputChannel() { if (has_current_frame) { @@ -1077,3 +1183,5 @@ void Mixer::OutputChannel::set_frame_ready_callback(Mixer::new_frame_ready_callb new_frame_ready_callback = callback; has_new_frame_ready_callback = true; } + +mutex RefCountedGLsync::fence_lock;