#include <movit/util.h>
#include <movit/resource_pool.h> // Must be above the Xlib includes.
#include <pthread.h>
+#include <unistd.h>
+
+#include <mutex>
#include <epoxy/egl.h>
#include "decklink_output.h"
#include "decklink_util.h"
#include "flags.h"
+#include "metrics.h"
#include "print_latency.h"
#include "timebase.h"
#include "v210_converter.h"
namespace {
// This class can be deleted during regular use, so make all the metrics static.
-bool metrics_inited = false;
+once_flag decklink_metrics_inited;
LatencyHistogram latency_histogram;
atomic<int64_t> metric_decklink_output_width_pixels{-1};
atomic<int64_t> metric_decklink_output_height_pixels{-1};
atomic<int64_t> metric_decklink_output_scheduled_samples{0};
+Summary metric_decklink_output_margin_seconds;
+
} // namespace
DeckLinkOutput::DeckLinkOutput(ResourcePool *resource_pool, QSurface *surface, unsigned width, unsigned height, unsigned card_index)
{
chroma_subsampler.reset(new ChromaSubsampler(resource_pool));
- if (!metrics_inited) {
+ call_once(decklink_metrics_inited, [](){
latency_histogram.init("decklink_output");
global_metrics.add("decklink_output_width_pixels", &metric_decklink_output_width_pixels, Metrics::TYPE_GAUGE);
global_metrics.add("decklink_output_height_pixels", &metric_decklink_output_height_pixels, Metrics::TYPE_GAUGE);
global_metrics.add("decklink_output_completed_frames", {{ "status", "unknown" }}, &metric_decklink_output_completed_frames_unknown);
global_metrics.add("decklink_output_scheduled_samples", &metric_decklink_output_scheduled_samples);
-
- metrics_inited = true;
- }
+ vector<double> quantiles{0.01, 0.1, 0.25, 0.5, 0.75, 0.9, 0.99};
+ metric_decklink_output_margin_seconds.init(quantiles, 60.0);
+ global_metrics.add("decklink_output_margin_seconds", &metric_decklink_output_margin_seconds);
+ });
}
-void DeckLinkOutput::set_device(IDeckLink *decklink)
+bool DeckLinkOutput::set_device(IDeckLink *decklink)
{
if (decklink->QueryInterface(IID_IDeckLinkOutput, (void**)&output) != S_OK) {
- fprintf(stderr, "Card %u has no outputs\n", card_index);
- exit(1);
+ fprintf(stderr, "Warning: Card %u has no outputs\n", card_index);
+ return false;
}
IDeckLinkDisplayModeIterator *mode_it;
if (output->GetDisplayModeIterator(&mode_it) != S_OK) {
- fprintf(stderr, "Failed to enumerate output display modes for card %u\n", card_index);
- exit(1);
+ fprintf(stderr, "Warning: Failed to enumerate output display modes for card %u\n", card_index);
+ return false;
}
video_modes.clear();
// if they exist. We're not very likely to need analog outputs, so we don't need a way
// to change beyond that.
video_connection = pick_default_video_connection(decklink, BMDDeckLinkVideoOutputConnections, card_index);
+ return true;
}
void DeckLinkOutput::start_output(uint32_t mode, int64_t base_pts)
last_frame_had_mode_mismatch = false;
}
- unique_ptr<Frame> frame = move(get_frame());
+ unique_ptr<Frame> frame = get_frame();
if (global_flags.ten_bit_output) {
chroma_subsampler->create_v210(y_tex, cbcr_tex, width, height, frame->uyvy_tex);
} else {
*frame_timestamp = steady_clock::now() +
nanoseconds((target_time - stream_frame_time) * 1000000000 / TIMEBASE);
+ metric_decklink_output_margin_seconds.count_event(
+ (target_time - stream_frame_time) / double(TIMEBASE));
+
// If we're ahead of time, wait for the frame to (approximately) start.
if (stream_frame_time < target_time) {
should_quit.sleep_until(*frame_timestamp);
check_error();
glBindBuffer(GL_PIXEL_PACK_BUFFER, frame->pbo);
check_error();
- glBufferStorage(GL_PIXEL_PACK_BUFFER, stride * height, NULL, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
+ glBufferStorage(GL_PIXEL_PACK_BUFFER, stride * height, nullptr, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
check_error();
frame->uyvy_ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, stride * height, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
check_error();
++metric_decklink_output_inflight_frames;
}
- glClientWaitSync(frame->fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
+ for ( ;; ) {
+ int err = glClientWaitSync(frame->fence.get(), /*flags=*/0, 0);
+ if (err == GL_TIMEOUT_EXPIRED) {
+ // NVIDIA likes to busy-wait; yield instead.
+ this_thread::sleep_for(milliseconds(1));
+ } else {
+ break;
+ }
+ }
check_error();
frame->fence.reset();