From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 27 Aug 2001 21:41:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 27 Aug 2001 21:40:53 -0400 Received: from ohiper1-230.apex.net ([209.250.47.245]:62469 "EHLO hapablap.dyn.dhs.org") by vger.kernel.org with ESMTP id ; Mon, 27 Aug 2001 21:40:35 -0400 Date: Mon, 27 Aug 2001 20:39:49 -0500 From: Steven Walter To: Pavel Machek Cc: linux-kernel@vger.kernel.org Subject: Re: v4l interface questions Message-ID: <20010827203949.B19422@hapablap.dyn.dhs.org> Mail-Followup-To: Steven Walter , Pavel Machek , linux-kernel@vger.kernel.org In-Reply-To: <20010827231126.A21664@bug.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010827231126.A21664@bug.ucw.cz>; from pavel@suse.cz on Mon, Aug 27, 2001 at 11:11:26PM +0200 X-Uptime: 5:36pm up 1 day, 13 min, 0 users, load average: 1.02, 1.05, 1.01 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 27, 2001 at 11:11:26PM +0200, Pavel Machek wrote: > I have device (vicam == usb 3com homeconnect camera), which would like to > fit into v4l framework. But... mmap is not really native operation for > usb. Should I emulate it, or just return unsupported and expect > applications to use read()? > > Similar problem is there with formats. vicam has some really strange > formats. Should I do conversion in kernel? Don't do conversion in the kernel. > Is there some usermode program that can handle camera without mmap > ability and can support arbitrary screen sizes + 16bpp grayscale? -- -Steven In a time of universal deceit, telling the truth is a revolutionary act. -- George Orwell