Hi Laurent, This is a great news - it means that stereo system should be easy to do. Most likely cause for synchronized (I assume you mean the same values) device SOF counters in two Logitech cameras is them being synchronized with host SOF counter. Can you compare values in device SOF counter with host SOF counter? Could provide experimental version of the driver placing SRC into timestamp structure, so I can read it? I can buy another Logitech camera and do some testing on two of them with controlled light source to find out if there is any "cheating" about synchronized exposure. I'm going to order V-Gear TalkCam MX6 and let you know about USB descriptors.
If StartOfFrame interrupt event can't be used, what about reading HcFmNumber register repeatedly, storing system time of several hundred value change events and doing some statistical processing on that data to find out offset between USB frame counter and system time. Again, this is relevant only if device and host SOF counters are using the same values. Best regards, Paul Jurczak. ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
