Gerd Knorr wrote: > > Why? With v4l2 you can just use /dev/video all the time and put the > file handle into vbi mode using S_FMT. And for v4l1 devices it > doesn't help if we adjust the v4l2 API ... We kept /dev/vbi for compatibility, now we have to deal with apps using it. The proxy compares the device file names to see if apps want to read from the same device. Since in user space we cannot easily determine if /dev/video and /dev/vbi refer to the same device and reads are exclusive, apps using both names cannot coexist. V4L1 has VIDIOCGUNIT, if names are ambiguous. Actually when devices uniquely identify themselves I wonder if the proxy still needs to deref symlinks or examine file names at all. Michael
