From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: DMIX and capture stream Date: Mon, 05 Jan 2004 17:42:07 +0100 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <200401040507.i0457Qbv005994@dhin.linuxaudiosystems.com> Mime-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: David Lloyd Cc: Paul Davis , ALSA Mailing List List-Id: alsa-devel@alsa-project.org At Mon, 5 Jan 2004 10:29:01 -0600 (CST), David Lloyd wrote: > > On Sun, 4 Jan 2004, Paul Davis wrote: > > > >I'm working on changing DMIX to allow clients to open the capture stream. > > > > i don't get it. dmix is for playback, not capture. what would be the > > semantics of this? > > That is exactly the problem! DMIX is for playback. DSNOOP is for > capture. Where is the module that is for both? Why, oh why, did they not > simply make ONE MODULE in the first place?? patch welcome ;) well, more practical answer is that capturing the playback would need copy of the playback data to the capture buffer. meanwhile, the implementation of dmix and dsnoop is basically only the multiplex access of a single hardware buffer. it's not "copying" of data. Takashi ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click