Add latency metrics to Kaeru.

[nageru] / print_latency.cpp

diff --git a/print_latency.cpp b/print_latency.cpp
index 52943537997cae27bf318ba2da15c1c843819371..af199856e4d1c34935486584282552c7aa5fc0d9 100644 (file)
--- a/print_latency.cpp
+++ b/print_latency.cpp
@@ -81,17 +81,28 @@ void print_latency(const string &header, const ReceivedTimestamps &received_ts,
 
        const steady_clock::time_point now = steady_clock::now();
 
-       unsigned num_cards = global_mixer->get_num_cards();
-       assert(received_ts.ts.size() == num_cards * FRAME_HISTORY_LENGTH);
-       for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
-               for (unsigned frame_index = 0; frame_index < FRAME_HISTORY_LENGTH; ++frame_index) {
-                       steady_clock::time_point ts = received_ts.ts[card_index * FRAME_HISTORY_LENGTH + frame_index];
-                       if (ts == steady_clock::time_point::min()) {
-                               continue;
-                       }
+       if (global_mixer == nullptr) {
+               // Kaeru.
+               assert(received_ts.ts.size() == 1);
+               steady_clock::time_point ts = received_ts.ts[0];
+               if (ts != steady_clock::time_point::min()) {
                        duration<double> latency = now - ts;
-                       histogram->summaries[card_index][frame_index][is_b_frame].count_event(latency.count());
-                       histogram->summaries[card_index][frame_index][2].count_event(latency.count());
+                       histogram->summaries[0][0][is_b_frame].count_event(latency.count());
+                       histogram->summaries[0][0][2].count_event(latency.count());
+               }
+       } else {
+               unsigned num_cards = global_mixer->get_num_cards();
+               assert(received_ts.ts.size() == num_cards * FRAME_HISTORY_LENGTH);
+               for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
+                       for (unsigned frame_index = 0; frame_index < FRAME_HISTORY_LENGTH; ++frame_index) {
+                               steady_clock::time_point ts = received_ts.ts[card_index * FRAME_HISTORY_LENGTH + frame_index];
+                               if (ts == steady_clock::time_point::min()) {
+                                       continue;
+                               }
+                               duration<double> latency = now - ts;
+                               histogram->summaries[card_index][frame_index][is_b_frame].count_event(latency.count());
+                               histogram->summaries[card_index][frame_index][2].count_event(latency.count());
+                       }
                }
        }