Trace sampled video frames through desktop encoding and transport

tools/chatgui/src/call_video_engine.cpp

@@ -264,6 +264,7 @@ void CallVideoEngine::transmit() {
         }
 #ifdef HAVE_STREAM_CAPTURE
         if (!cadence.accept(pts)) { lastPts = pts; ++paced; idle(); continue; }
+        const int64_t convertStarted = nowUs();
         QImage image = raw.toImage();
         if (image.isNull()) { DEBUG_WARN(DEBUG_CATEGORY_CALL, "camera frame conversion failed"); lastPts = pts; continue; }
         LiveEncodedFrame output; CallVideoRateCompletion completion;
@@ -283,6 +284,12 @@ void CallVideoEngine::transmit() {
         packet.size = packet.length = output.data.size(); packet.data = reinterpret_cast<const uint8_t*>(output.data.constData());
         packet.flags = output.key ? CALL_VIDEO_KEY : 0;
         forceKey = call_video_port_send(&packet) != 1;
+        // Одинаковое окно исходного PTS на всех этапах: примерно один кадр в секунду, без трассы каждого кадра.
+        if (pts % 1000000 < 34000)
+            DEBUG_DEBUG(DEBUG_CATEGORY_DEBUG,
+                "video timing stage=encode call=%llu frame=%llu pts=%lld mono_us=%lld select_us=%lld convert_us=%lld encode_us=%lld accepted=%d",
+                (unsigned long long)m->id, (unsigned long long)frameId, (long long)pts, (long long)nowUs(),
+                (long long)convertStarted, (long long)(encodeStarted - convertStarted), (long long)(nowUs() - encodeStarted), !forceKey);
         if (forceKey) ++sendBusy;
 #else
         idle();