Add latency metrics to Kaeru.

[nageru] / kaeru.cpp

diff --git a/kaeru.cpp b/kaeru.cpp
index df6f2065711f2001812b565b615004d55626bf3f..23b3c8786ce4ae0336d60f3cdcd85305d4b6a788 100644 (file)
--- a/kaeru.cpp
+++ b/kaeru.cpp
@@ -14,15 +14,18 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <unistd.h>
+#include <chrono>
 #include <string>
 
 using namespace bmusb;
 using namespace movit;
 using namespace std;
+using namespace std::chrono;
 using namespace std::placeholders;
 
 Mixer *global_mixer = nullptr;
 X264Encoder *global_x264_encoder = nullptr;
+MuxMetrics stream_mux_metrics;
 
 int write_packet(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time)
 {
@@ -62,7 +65,8 @@ unique_ptr<Mux> create_mux(HTTPD *httpd, AVOutputFormat *oformat, X264Encoder *x
        unique_ptr<Mux> mux;
        int time_base = global_flags.stream_coarse_timebase ? COARSE_TIMEBASE : TIMEBASE;
        mux.reset(new Mux(avctx, global_flags.width, global_flags.height, Mux::CODEC_H264, video_extradata, audio_encoder->get_codec_parameters().get(), time_base,
-               /*write_callback=*/nullptr, Mux::WRITE_FOREGROUND, {}));
+               /*write_callback=*/nullptr, Mux::WRITE_FOREGROUND, { &stream_mux_metrics }));
+       stream_mux_metrics.init({{ "destination", "http" }});
        return mux;
 }
 
@@ -74,9 +78,12 @@ void video_frame_callback(FFmpegCapture *video, X264Encoder *x264_encoder, Audio
                          FrameAllocator::Frame audio_frame, size_t audio_offset, AudioFormat audio_format)
 {
        if (video_pts >= 0 && video_frame.len > 0) {
+               ReceivedTimestamps ts;
+               ts.ts.push_back(steady_clock::now());
+
                video_pts = av_rescale_q(video_pts, video_timebase, AVRational{ 1, TIMEBASE });
                int64_t frame_duration = TIMEBASE * video_format.frame_rate_nom / video_format.frame_rate_den;
-               x264_encoder->add_frame(video_pts, frame_duration, video->get_current_frame_ycbcr_format().luma_coefficients, video_frame.data + video_offset, ReceivedTimestamps());
+               x264_encoder->add_frame(video_pts, frame_duration, video->get_current_frame_ycbcr_format().luma_coefficients, video_frame.data + video_offset, ts);
        }
        if (audio_frame.len > 0) {
                // FFmpegCapture takes care of this for us.
@@ -152,6 +159,7 @@ int main(int argc, char *argv[])
                usage(PROGRAM_KAERU);
                exit(1);
        }
+       global_flags.num_cards = 1;  // For latency metrics.
 
        av_register_all();
        avformat_network_init();