#include "mixer.h"
#include <assert.h>
+#include <endian.h>
#include <epoxy/egl.h>
#include <movit/effect_chain.h>
#include <movit/effect_util.h>
#include <sys/time.h>
#include <time.h>
#include <algorithm>
+#include <chrono>
#include <cmath>
#include <condition_variable>
#include <cstddef>
#include <sys/resource.h>
#include "bmusb/bmusb.h"
+#include "bmusb/fake_capture.h"
#include "context.h"
#include "decklink_capture.h"
#include "defs.h"
-#include "fake_capture.h"
#include "flags.h"
#include "video_encoder.h"
#include "pbo_frame_allocator.h"
using namespace movit;
using namespace std;
+using namespace std::chrono;
using namespace std::placeholders;
+using namespace bmusb;
Mixer *global_mixer = nullptr;
bool uses_mlock = false;
uint32_t s2 = *src++;
uint32_t s3 = *src++;
uint32_t s = s1 | (s1 << 8) | (s2 << 16) | (s3 << 24);
- dst[i * out_channels + j] = int(s) * (1.0f / 4294967296.0f);
+ dst[i * out_channels + j] = int(s) * (1.0f / 2147483648.0f);
}
src += 3 * (in_channels - out_channels);
}
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);
+ int32_t s = le32toh(*(int32_t *)src);
+ dst[i * out_channels + j] = s * (1.0f / 2147483648.0f);
src += 4;
}
src += 4 * (in_channels - out_channels);
movit_texel_subpixel_precision /= 2.0;
resource_pool.reset(new ResourcePool);
- theme.reset(new Theme(global_flags.theme_filename.c_str(), resource_pool.get(), num_cards));
+ theme.reset(new Theme(global_flags.theme_filename, global_flags.theme_dirs, resource_pool.get(), num_cards));
for (unsigned i = 0; i < NUM_OUTPUTS; ++i) {
output_channel[i].parent = this;
output_channel[i].channel = i;
// Start listening for clients only once VideoEncoder has written its header, if any.
httpd.start(9095);
- // First try initializing the fake devices, then PCI devices, then USB,
- // until we have the desired number of cards.
- unsigned num_pci_devices = 0, num_usb_devices = 0;
+ // First try initializing the then PCI devices, then USB, then
+ // fill up with fake cards until we have the desired number of cards.
+ unsigned num_pci_devices = 0;
unsigned card_index = 0;
- assert(global_flags.num_fake_cards >= 0); // Enforced in flags.cpp.
- unsigned num_fake_cards = global_flags.num_fake_cards;
-
- assert(num_fake_cards <= num_cards); // Enforced in flags.cpp.
- for ( ; card_index < num_fake_cards; ++card_index) {
- configure_card(card_index, format, new FakeCapture(card_index));
- }
-
- if (global_flags.num_fake_cards > 0) {
- fprintf(stderr, "Initialized %d fake cards.\n", global_flags.num_fake_cards);
- }
-
- if (card_index < num_cards) {
+ {
IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance();
if (decklink_iterator != nullptr) {
for ( ; card_index < num_cards; ++card_index) {
break;
}
- configure_card(card_index, format, new DeckLinkCapture(decklink, card_index - num_fake_cards));
+ configure_card(card_index, new DeckLinkCapture(decklink, card_index), /*is_fake_capture=*/false);
++num_pci_devices;
}
decklink_iterator->Release();
- fprintf(stderr, "Found %d DeckLink PCI card(s).\n", num_pci_devices);
+ fprintf(stderr, "Found %u DeckLink PCI card(s).\n", num_pci_devices);
} else {
fprintf(stderr, "DeckLink drivers not found. Probing for USB cards only.\n");
}
}
- for ( ; card_index < num_cards; ++card_index) {
- configure_card(card_index, format, new BMUSBCapture(card_index - num_pci_devices - num_fake_cards));
- ++num_usb_devices;
+ unsigned num_usb_devices = BMUSBCapture::num_cards();
+ for (unsigned usb_card_index = 0; usb_card_index < num_usb_devices && card_index < num_cards; ++usb_card_index, ++card_index) {
+ 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);
}
+ fprintf(stderr, "Found %u USB card(s).\n", num_usb_devices);
- if (num_usb_devices > 0) {
- has_bmusb_thread = true;
- BMUSBCapture::start_bm_thread();
+ unsigned num_fake_cards = 0;
+ for ( ; card_index < num_cards; ++card_index, ++num_fake_cards) {
+ FakeCapture *capture = new FakeCapture(WIDTH, HEIGHT, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
+ configure_card(card_index, capture, /*is_fake_capture=*/true);
}
+ if (num_fake_cards > 0) {
+ fprintf(stderr, "Initialized %u fake cards.\n", num_fake_cards);
+ }
+
+ BMUSBCapture::set_card_connected_callback(bind(&Mixer::bm_hotplug_add, this, _1));
+ BMUSBCapture::start_bm_thread();
+
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();
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_gain_staging_auto(false);
- set_limiter_enabled(false);
- set_compressor_enabled(false);
- }
+ set_locut_enabled(global_flags.locut_enabled);
+ set_gain_staging_db(global_flags.initial_gain_staging_db);
+ set_gain_staging_auto(global_flags.gain_staging_auto);
+ set_compressor_enabled(global_flags.compressor_enabled);
+ set_limiter_enabled(global_flags.limiter_enabled);
+ set_final_makeup_gain_auto(global_flags.final_makeup_gain_auto);
// 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.
{
resource_pool->release_glsl_program(cbcr_program_num);
glDeleteBuffers(1, &cbcr_vbo);
- if (has_bmusb_thread) {
- BMUSBCapture::stop_bm_thread();
- }
+ BMUSBCapture::stop_bm_thread();
for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
{
video_encoder.reset(nullptr);
}
-void Mixer::configure_card(unsigned card_index, const QSurfaceFormat &format, CaptureInterface *capture)
+void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, bool is_fake_capture)
{
printf("Configuring card %d...\n", card_index);
CaptureCard *card = &cards[card_index];
+ if (card->capture != nullptr) {
+ card->capture->stop_dequeue_thread();
+ delete card->capture;
+ }
card->capture = capture;
+ card->is_fake_capture = is_fake_capture;
card->capture->set_frame_callback(bind(&Mixer::bm_frame, this, card_index, _1, _2, _3, _4, _5, _6, _7));
- card->frame_allocator.reset(new PBOFrameAllocator(8 << 20, WIDTH, HEIGHT)); // 8 MB.
+ if (card->frame_allocator == nullptr) {
+ card->frame_allocator.reset(new PBOFrameAllocator(8 << 20, WIDTH, HEIGHT)); // 8 MB.
+ }
card->capture->set_video_frame_allocator(card->frame_allocator.get());
- card->surface = create_surface(format);
- card->resampling_queue.reset(new ResamplingQueue(card_index, OUTPUT_FREQUENCY, OUTPUT_FREQUENCY, 2));
+ if (card->surface == nullptr) {
+ card->surface = create_surface_with_same_format(mixer_surface);
+ }
+ {
+ unique_lock<mutex> lock(cards[card_index].audio_mutex);
+ card->resampling_queue.reset(new ResamplingQueue(card_index, OUTPUT_FREQUENCY, OUTPUT_FREQUENCY, 2));
+ }
+ while (!card->new_frames.empty()) card->new_frames.pop();
+ card->fractional_samples = 0;
+ card->last_timecode = -1;
+ card->next_local_pts = 0;
card->capture->configure_card();
}
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);
+ steady_clock::time_point now = steady_clock::now();
+ double sec_since_last_switch = duration<double>(steady_clock::now() - last_mode_scan_change[card_index]).count();
if (sec_since_last_switch > switch_time_s) {
// It isn't this mode; try the next one.
mode_scanlist_index[card_index]++;
PBOFrameAllocator::Userdata *userdata = (PBOFrameAllocator::Userdata *)video_frame.userdata;
unsigned num_fields = video_format.interlaced ? 2 : 1;
- timespec frame_upload_start;
+ steady_clock::time_point frame_upload_start;
if (video_format.interlaced) {
// Send the two fields along as separate frames; the other side will need to add
// a deinterlacer to actually get this right.
assert(frame_length % 2 == 0);
frame_length /= 2;
num_fields = 2;
- clock_gettime(CLOCK_MONOTONIC, &frame_upload_start);
+ frame_upload_start = steady_clock::now();
}
userdata->last_interlaced = video_format.interlaced;
userdata->last_has_signal = video_format.has_signal;
+ userdata->last_is_connected = video_format.is_connected;
userdata->last_frame_rate_nom = video_format.frame_rate_nom;
userdata->last_frame_rate_den = video_format.frame_rate_den;
RefCountedFrame frame(video_frame);
// against the video display, although the latter is not as critical.)
// This requires our system clock to be reasonably close to the
// video clock, but that's not an unreasonable assumption.
- timespec second_field_start;
- second_field_start.tv_nsec = frame_upload_start.tv_nsec +
- frame_length * 1000000000 / TIMEBASE;
- second_field_start.tv_sec = frame_upload_start.tv_sec +
- second_field_start.tv_nsec / 1000000000;
- second_field_start.tv_nsec %= 1000000000;
-
- while (clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME,
- &second_field_start, nullptr) == -1 &&
- errno == EINTR) ;
+ steady_clock::time_point second_field_start = frame_upload_start +
+ nanoseconds(frame_length * 1000000000 / TIMEBASE);
+ this_thread::sleep_until(second_field_start);
}
{
}
}
+void Mixer::bm_hotplug_add(libusb_device *dev)
+{
+ lock_guard<mutex> lock(hotplug_mutex);
+ hotplugged_cards.push_back(dev);
+}
+
+void Mixer::bm_hotplug_remove(unsigned card_index)
+{
+ cards[card_index].new_frames_changed.notify_all();
+}
+
void Mixer::thread_func()
{
eglBindAPI(EGL_OPENGL_API);
exit(1);
}
- struct timespec start, now;
- clock_gettime(CLOCK_MONOTONIC, &start);
+ steady_clock::time_point start, now;
+ start = steady_clock::now();
int frame = 0;
int stats_dropped_frames = 0;
bool has_new_frame[MAX_CARDS] = { false };
int num_samples[MAX_CARDS] = { 0 };
- // TODO: Add a timeout.
unsigned master_card_index = theme->map_signal(master_clock_channel);
assert(master_card_index < num_cards);
stats_dropped_frames += new_frames[master_card_index].dropped_frames;
send_audio_level_callback();
+ handle_hotplugged_cards();
+
for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
if (card_index == master_card_index || !has_new_frame[card_index]) {
continue;
}
}
- int64_t duration = new_frames[master_card_index].length;
- render_one_frame(duration);
+ int64_t frame_duration = new_frames[master_card_index].length;
+ render_one_frame(frame_duration);
++frame;
- pts_int += duration;
+ pts_int += frame_duration;
- clock_gettime(CLOCK_MONOTONIC, &now);
- double elapsed = now.tv_sec - start.tv_sec +
- 1e-9 * (now.tv_nsec - start.tv_nsec);
+ now = steady_clock::now();
+ double elapsed = duration<double>(now - start).count();
if (frame % 100 == 0) {
- // 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);
- }
-
- rlimit limit;
- if (getrlimit(RLIMIT_MEMLOCK, &limit) == -1) {
- perror("getrlimit(RLIMIT_MEMLOCK)");
- assert(false);
- }
-
printf("%d frames (%d dropped) in %.3f seconds = %.1f fps (%.1f ms/frame)",
frame, stats_dropped_frames, elapsed, frame / elapsed,
1e3 * elapsed / frame);
// chain->print_phase_timing();
- if (uses_mlock) {
- // 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);
- }
+ // 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)");
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");
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])
{
+start:
// The first card is the master timer, so wait for it to have a new frame.
+ // TODO: Add a timeout.
unique_lock<mutex> lock(bmusb_mutex);
- cards[master_card_index].new_frames_changed.wait(lock, [this, master_card_index]{ return !cards[master_card_index].new_frames.empty(); });
+ cards[master_card_index].new_frames_changed.wait(lock, [this, master_card_index]{ return !cards[master_card_index].new_frames.empty() || cards[master_card_index].capture->get_disconnected(); });
+
+ if (cards[master_card_index].new_frames.empty()) {
+ // We were woken up, but not due to a new frame. Deal with it
+ // and then restart.
+ assert(cards[master_card_index].capture->get_disconnected());
+ handle_hotplugged_cards();
+ goto start;
+ }
for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
CaptureCard *card = &cards[card_index];
}
}
+void Mixer::handle_hotplugged_cards()
+{
+ // Check for cards that have been disconnected since last frame.
+ for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
+ CaptureCard *card = &cards[card_index];
+ if (card->capture->get_disconnected()) {
+ fprintf(stderr, "Card %u went away, replacing with a fake card.\n", card_index);
+ FakeCapture *capture = new FakeCapture(WIDTH, HEIGHT, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
+ configure_card(card_index, capture, /*is_fake_capture=*/true);
+ card->queue_length_policy.reset(card_index);
+ card->capture->start_bm_capture();
+ }
+ }
+
+ // Check for cards that have been connected since last frame.
+ vector<libusb_device *> hotplugged_cards_copy;
+ {
+ lock_guard<mutex> lock(hotplug_mutex);
+ swap(hotplugged_cards, hotplugged_cards_copy);
+ }
+ for (libusb_device *new_dev : hotplugged_cards_copy) {
+ // Look for a fake capture card where we can stick this in.
+ int free_card_index = -1;
+ for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
+ if (cards[card_index].is_fake_capture) {
+ free_card_index = int(card_index);
+ break;
+ }
+ }
+
+ if (free_card_index == -1) {
+ fprintf(stderr, "New card plugged in, but no free slots -- ignoring.\n");
+ libusb_unref_device(new_dev);
+ } else {
+ // BMUSBCapture takes ownership.
+ 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);
+ 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();
+ }
+ }
+}
+
+
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.
// printf("limiter=%+5.1f compressor=%+5.1f\n", 20.0*log10(limiter_att), 20.0*log10(compressor_att));
- // Upsample 4x to find interpolated peak.
- peak_resampler.inp_data = samples_out.data();
- peak_resampler.inp_count = samples_out.size() / 2;
-
- vector<float> interpolated_samples_out;
- interpolated_samples_out.resize(samples_out.size());
- while (peak_resampler.inp_count > 0) { // About four iterations.
- peak_resampler.out_data = &interpolated_samples_out[0];
- peak_resampler.out_count = interpolated_samples_out.size() / 2;
- peak_resampler.process();
- size_t out_stereo_samples = interpolated_samples_out.size() / 2 - peak_resampler.out_count;
- peak = max<float>(peak, find_peak(interpolated_samples_out.data(), out_stereo_samples * 2));
- peak_resampler.out_data = nullptr;
- }
-
// At this point, we are most likely close to +0 LU, but all of our
// measurements have been on raw sample values, not R128 values.
// So we have a final makeup gain to get us to +0 LU; the gain
final_makeup_gain = m;
}
+ // Upsample 4x to find interpolated peak.
+ peak_resampler.inp_data = samples_out.data();
+ peak_resampler.inp_count = samples_out.size() / 2;
+
+ vector<float> interpolated_samples_out;
+ interpolated_samples_out.resize(samples_out.size());
+ while (peak_resampler.inp_count > 0) { // About four iterations.
+ peak_resampler.out_data = &interpolated_samples_out[0];
+ peak_resampler.out_count = interpolated_samples_out.size() / 2;
+ peak_resampler.process();
+ size_t out_stereo_samples = interpolated_samples_out.size() / 2 - peak_resampler.out_count;
+ peak = max<float>(peak, find_peak(interpolated_samples_out.data(), out_stereo_samples * 2));
+ peak_resampler.out_data = nullptr;
+ }
+
// Find R128 levels and L/R correlation.
vector<float> left, right;
deinterleave_samples(samples_out, &left, &right);
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]);
+ last_mode_scan_change[card_index] = steady_clock::now();
}
Mixer::OutputChannel::~OutputChannel()