Split direct v210 read and copy timing

IVideoFeed.hpp

@@ -17,6 +17,12 @@ enum class FeedRuntimeStatus
     Error
 };
 
+struct V210ReadTiming
+{
+    uint64_t sourceReadNs = 0;
+    uint64_t payloadCopyNs = 0;
+};
+
 class IVideoFeed
 {
 public:
@@ -57,11 +63,13 @@ public:
     virtual bool readV210FrameInto(
         uint32_t frameCounter,
         void* destination,
-        size_t destinationSize)
+        size_t destinationSize,
+        V210ReadTiming* timing = nullptr)
     {
         (void)frameCounter;
         (void)destination;
         (void)destinationSize;
+        (void)timing;
         return false;
     }
     virtual uint32_t v210Width() const { return 0; }