From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruce Paterson Subject: Re: non-interleaved and interleaved access Date: Tue, 10 Dec 2002 11:29:11 +1100 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <3DF53557.8070708@tele-ip.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Tim Goetze Cc: nick , alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Tim Goetze wrote: > nick wrote: > > >>is this because of the cards or my code? > > > it's the hardware -- all hw i know of is hard-wired for one > of the two access types. interleaved is much more common. I'll try and reply to this based on my experience, but I'm sure others can correct me ! Yes interleaved is more common on the hardware, and if you talk directly to the hw:0.0 interface this is all you can use. If you use the plughw:0.0 interface, however, you can use interleaved or non-interleaved as the plug code modifies whatever you set to suit the hardware (including sizing and bit-rates). I couldn't get the plughw interface to do this for ice1712, however (it simply didn't work), but this was with quite an early release of 0.9 (rc2) and things may well have improved by now. Since then my application chnaged to use hw:0.0 directly so I haven't gone back to check.... -- Cheers, Bruce ------------------------------------------------------------------- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. /\\\/\\\/\\\ / / Bruce Paterson / \\\ \\\ \\\ / / Senior Design Engineer / /\\\/\\\/\\\/ / 87 Peters Ave, Mulgrave, Vic, 3170 / / \\\ \\\ \\\ / PO Box 4112, Mulgrave, Vic, 3170, Australia / / \\\/\\\ \\\/ Ph: +61 3 8561 4232 Fax: +61 3 9560 9055 Tele-IP Ltd. Email: bruce@tele-ip.com Icq: #32015991 WWW: http://www.tele-ip.com VK3TJN ------------------------------------------------------------------- ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf