Gerd Knorr wrote: > So IMHO it would be useful to either: > - require driver do support *both* non-blocking I/O and partial read()s > or > - allow drivers to support only blocking, full-frame read()s. Understood. I'd still vote for the non-blocking support on grounds of select based IO being highly desireable. However I'd note it's only going to useful for portable applications if the video API guarantees that *all* drivers will support it. Ideally bttv would implement non-blocking read by direct dma if there's a pending read, and bounce-buffer if not, but I realize that's in the area of diminishing returns. Purely personally I'm happy with mmap, and just miss select! Ben
