From alsa-devel-owner@alsa.jcu.cz  Fri Mar 12 19:50:41 1999
Received: from bologna.nettuno.it (bologna.nettuno.it [193.43.2.1])
	by marvin.jcu.cz (8.9.1a/8.9.1) with ESMTP id TAA01711
	for <alsa-devel@alsa.jcu.cz>; Fri, 12 Mar 1999 19:50:24 +0100
Received: from igor.opun.it (ppp17-nas0.faenza.nettuno.it [193.207.49.146])
	by bologna.nettuno.it (8.8.6/8.8.6/NETTuno 3.1) with ESMTP id TAA22913
	for <alsa-devel@alsa.jcu.cz>; Fri, 12 Mar 1999 19:50:21 +0100 (MET)
Received: from racine.ra.it (localhost [127.0.0.1])
	by igor.opun.it (8.8.8/8.8.8) with ESMTP id TAA03402
	for <alsa-devel@alsa.jcu.cz>; Fri, 12 Mar 1999 19:50:17 +0100
Message-ID: <36E961E8.5D834811@racine.ra.it>
Date: Fri, 12 Mar 1999 19:50:16 +0100
From: Abramo Bagnara <abbagnara@racine.ra.it>
MIME-Version: 1.0
To: alsa-devel@alsa.jcu.cz
Subject: Re: Some proposals
References: <Pine.LNX.3.96.990312110154.1133G-100000@entry.jcu.cz> <36E92285.6E12A627@racine.ra.it> <36E93C06.484D0640@mat.utfsm.cl>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Reply-To: alsa-devel@alsa.jcu.cz
Sender: alsa-devel-owner@alsa.jcu.cz
Precedence: list

Daniel Serpell Carriquiry wrote:
> 
> Abramo Bagnara wrote:
> >
> > If all cards that support hardware mixing of many DAC sources work in the GUS
> > way (i.e. receive the data interleaved), this proposal is to forget.
> > I believed that this was not the only way...
> > If I understand well, to receive the data not interleaved we would need a DMA
> > channel for every source... Am I right?
> > Please apologize my ignorance.
> >
>   In ISA world, this is true, but some PCI cards that do BusMastering
> can
> mix many channels at the same time (ie, Trident 4dwave have 32+32
> independent
> channels, even at different data format and rates, from arbitrary
> address).
>   The M$-Win* driver for this card support multiple open, and it's a
> real advantage
> (the sistem sounds don't stpo while you are listening an mp3 and playing
> some
> game).

Then I feel the need to renew my proposal ;-)

-- 
Abramo Bagnara                       mailto:abbagnara@racine.ra.it

Opera Unica
Via Emilia Interna, 140              Phone: +39.0546.656023
48014 Castel Bolognese (RA) - Italy  Fax:   +39.0546.656023

