On Sat, 11 Jun 2011, Xiaofan Chen wrote:
> On Sat, Jun 11, 2011 at 6:43 AM, Theodore Kilgore > <kilg...@banach.math.auburn.edu> wrote: > > I do not believe that we have found the optimal solution, yet. The ideal > > thing would be some kind of hack which allows the kernel to be used when > > it is needed, and when it is not needed it does not interfere. > > Just wondering if you can use libusb-1.0 for the user space still image > functionality. > > libusb-1.0 offers the following functions to do that for you under Linux. > > int libusb_kernel_driver_active (libusb_device_handle *dev, int interface) > Determine if a kernel driver is active on an interface. > int libusb_detach_kernel_driver (libusb_device_handle *dev, int interface) > Detach a kernel driver from an interface. > int libusb_attach_kernel_driver (libusb_device_handle *dev, int interface) > Re-attach an interface's kernel driver, which was previously > detached using libusb_detach_kernel_driver(). > > So you can detach the kernel v4l2 driver at the beginning and later > re-attach it when you finish. Well, then, this solves the problem, doesn't it? Of course, those who deal with creating those "simple" and "user-friendly" GUI environments would probably still do well if they would open a dialog box for dual-mode hardware. Theodore Kilgore -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
