X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=bmusb%2Fbmusb.h;fp=bmusb%2Fbmusb.h;h=6aabd51fcc39f68c1b0780e24d5451319083b317;hb=c7466ef67f76efdd9e8a151e8d0f38281199c2a9;hp=f4af6aa14b2a1399168d3f75673b1d2215846770;hpb=1066d2975e1c824bef6b9c9555c7d9f4f1a890a9;p=bmusb

diff --git a/bmusb/bmusb.h b/bmusb/bmusb.h
index f4af6aa..6aabd51 100644
--- a/bmusb/bmusb.h
+++ b/bmusb/bmusb.h
@@ -4,6 +4,7 @@
 #include <libusb.h>
 #include <stdint.h>
 #include <atomic>
+#include <chrono>
 #include <condition_variable>
 #include <deque>
 #include <functional>
@@ -39,6 +40,14 @@ class FrameAllocator {
 		// If so, <len> and <size> are still about the number of total bytes
 		// so if size == 1024, there's 512 bytes in data and 512 in data2.
 		bool interleaved = false;
+
+		// At what point this frame was received. Note that this marks the
+		// _end_ of the frame being received, not the beginning.
+		// Thus, if you want to measure latency, you'll also need to include
+		// the time the frame actually took to transfer (usually 1/fps,
+		// ie., the frames are typically transferred in real time).
+		std::chrono::steady_clock::time_point received_timestamp =
+			std::chrono::steady_clock::time_point::min();
 	};
 
 	virtual ~FrameAllocator();