Hi Brian, On Sunday 18 January 2009, Brian Pin wrote: > Hi all, > > I am wondering if there is any dual stream UVC device that transfer a > preview stream and a regular stream at the same time?
Not that I know of. > Because I am going to make one so I am wondering if there is any. Besides > is the Linux UVC driver supports dual stream devices? Or it is the > application's responsibility to support? Both I guess. The V4L2 API doesn't clearly state how dual (or multi) stream devices should be handled, so this is a grey area. > Another question is, According to UVC 1.1 spec, there can be only one > endpoint for each video streaming interface, if I am going to have dual > stream, that means I will have to have two endpoints, and that means I will > have two video streaming interface. and that will also leads to two sets of > streaming parameters. <----- that is my simple thoughts, any comments or > ideas please tell me. Will your device support simultaneous preview and regular streams ? If so you will indeed need two streaming interfaces. This is not supported by the Linux UVC driver so we will probably have to work together. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
