From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?q?M=E5ns_Rullg=E5rd?= Subject: Re: CMI9780 and ALSA volume control Date: Tue, 13 Apr 2004 20:38:28 +0200 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <92C0412E07F63549B2A2F2345D3DB515F7D42E@cm-msg-02.cmedia.com.tw> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@lists.sourceforge.net Cc: alsa-user@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Takashi Iwai writes: > At Mon, 12 Apr 2004 11:04:55 +0800, > C.L. Tien wrote: >> >> 9780 has no PCM volume control, master volume control doesn't >> control the PCM, either. This feature is the same as other C-Media >> AC97 Codecs. >> >> I once posted a patch that tune PCM volume in SW way (change PCM >> data in DMA buffer), but it was not accepted. > > IMO, doing this s/w volume in the driver is not the optimal > solution. i prefer having this feature in alsa-lib. > > the only drawback of implementing in alsa-lib is that the kernel OSS > emulation cannot support it, and that would surely annoy people. In a way that's a good thing. If OSS doesn't work more people will request ALSA support from applications. -- Måns Rullgård mru@kth.se ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click