Split direct v210 read and copy timing

MxlSdkFeed.cpp

@@ -575,10 +575,17 @@ const VideoFrame& MxlSdkFeed::getFrame(uint32_t frameCounter)
 bool MxlSdkFeed::readV210FrameInto(
     uint32_t frameCounter,
     void* destination,
-    size_t destinationSize)
+    size_t destinationSize,
+    V210ReadTiming* timing)
 {
     (void)frameCounter;
 
+    if (timing != nullptr)
+    {
+        timing->sourceReadNs = 0;
+        timing->payloadCopyNs = 0;
+    }
+
     if (!mFlowOpened && !openFlow())
     {
         return false;
@@ -598,6 +605,8 @@ bool MxlSdkFeed::readV210FrameInto(
 
     uint8_t* payload = nullptr;
 
+    const auto readStart = std::chrono::steady_clock::now();
+
     while (true)
     {
         mxlStatus status = mxlFlowReaderGetGrainNonBlocking(
@@ -653,6 +662,8 @@ bool MxlSdkFeed::readV210FrameInto(
         return false;
     }
 
+    const auto readEnd = std::chrono::steady_clock::now();
+
     const size_t payloadSize =
         static_cast<size_t>(mSourceStride) *
         static_cast<size_t>(mSourceHeight);
@@ -665,7 +676,22 @@ bool MxlSdkFeed::readV210FrameInto(
         return false;
     }
 
+    const auto copyStart = std::chrono::steady_clock::now();
     std::memcpy(destination, payload, payloadSize);
+    const auto copyEnd = std::chrono::steady_clock::now();
+
+    if (timing != nullptr)
+    {
+        timing->sourceReadNs =
+            static_cast<uint64_t>(
+                std::chrono::duration_cast<std::chrono::nanoseconds>(
+                    readEnd - readStart).count());
+        timing->payloadCopyNs =
+            static_cast<uint64_t>(
+                std::chrono::duration_cast<std::chrono::nanoseconds>(
+                    copyEnd - copyStart).count());
+    }
+
     mLastDisplayedIndex = index;
     ++mFrameVersion;
     return true;
@@ -793,11 +819,17 @@ bool MxlSdkFeed::supportsDirectV210Read() const { return false; }
 bool MxlSdkFeed::readV210FrameInto(
     uint32_t frameCounter,
     void* destination,
-    size_t destinationSize)
+    size_t destinationSize,
+    V210ReadTiming* timing)
 {
     (void)frameCounter;
     (void)destination;
     (void)destinationSize;
+    if (timing != nullptr)
+    {
+        timing->sourceReadNs = 0;
+        timing->payloadCopyNs = 0;
+    }
     return false;
 }
 uint32_t MxlSdkFeed::v210Width() const { return 0; }