Date: Thu, 8 Jul 2004 21:35:34 +0100 From: Mark Dixon <mark@markdnet.demon.co.uk> To: freebsd-hackers@freebsd.org Subject: Re: where to get info to write basic usb driver for own device? Message-ID: <200407082136.10818.mark@markdnet.demon.co.uk> In-Reply-To: <20040704182047.GD72520@silverwraith.com> References: <E1Bh6Xf-0005UW-02@mailsrv2.tranzpeer.net> <20040704182047.GD72520@silverwraith.com>
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--Boundary-03=_tAb7AKttLCkhtPS Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Sunday 04 Jul 2004 19:20, Avleen Vig wrote: > > I am actually in a similar situation. > I know some C, and want to write a device driver for a USB device (web > cam), but I have no idea where to start. > I've searched for a "beginners guide to writing device drivers" but > failed miserably :-( I briefly looked into this as well, and in summery, webcams are a bit of a= =20 pain. Unlike Linux folks, there's no Video4BSD (although there was some tal= k=20 of one a while back), and so there's no standard way of doing it.=20 The only proven video in API is the one used by meteora (I think) and bktr,= =20 and thats by all accounts hideous, which leaves you needing to write a lot= =20 more code than you first thought, and that was enough to put me off. A=20 standard thing to do with the video stream having extracted it from the=20 webcam which applications like gnomemeeting understand would make the job=20 much easier. =2D-=20 Mark 'If it compiles, ship it' --Boundary-03=_tAb7AKttLCkhtPS Content-Type: application/pgp-signature Content-Description: signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQBA7bAtLqgJ90OcaiARApzMAJ0aGmIrcJ726T+kxD9dfmQ/XO9mpQCgsg77 gAVJUz1+ihYyy0a470h0vUI= =5pFH -----END PGP SIGNATURE----- --Boundary-03=_tAb7AKttLCkhtPS--
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