Hey, On Tue, 2003-08-05 at 16:31, alsa@xxxxxxxxxxxx wrote: > thus, a small driver will take in a primitive case: > 768x576x3x16(12 packed into words) = 2654208 bytes. > to make all calculations, one will need additional buffers (2-3) -> up to > 7Mb of kernel space. +doublebuffering+additional space for user buffers > etc... > +somebody likes to have inhibit user access control, just in the kernel. If you're talking about a webcam, sure. Or would you want to capture into vanity? And do you really expect that a top-level lib will require less memory? Of course not, it will use just the same buffers, but in userspace. And you don't need a wrapper for that, a helper lib can do just the same. I don't see how a wrapper lib would suddenly solve all world problems at once, plus the ones that cannot be solved alltogether. > if a user is not watching an image from a camera, why kernel is eating > memory? That's not supposed to happen. And either way, you'd need to "fix" the driver to not do this. Tuukka already said he had plans to do this, so I see no reason to worry. Ronald -- Ronald Bultje <rbultje@xxxxxxxxxxxxxxxxxxx>
