From: Hannu Savolainen <hannu@opensound.com>
To: Gabor Gombas <gombasg@sztaki.hu>
Cc: Marcin Dalecki <martin@dalecki.de>,
Jesper Juhl <jesper.juhl@gmail.com>,
Lee Revell <rlrevell@joe-job.com>,
Jan Engelhardt <jengelh@linux01.gwdg.de>,
Takashi Iwai <tiwai@suse.de>, Adrian Bunk <bunk@stusta.de>,
Tomasz Torcz <zdzichu@irc.pl>,
Olivier Galibert <galibert@pobox.com>,
Alistair John Strachan <s0348365@sms.ed.ac.uk>,
Andi Kleen <ak@suse.de>,
perex@suse.cz, alsa-devel@alsa-project.org,
James@superbug.demon.co.uk, sailer@ife.ee.ethz.ch,
linux-sound@vger.kernel.org, zab@zabbo.net,
kyle@parisc-linux.org, parisc-linux@lists.parisc-linux.org,
jgarzik@pobox.com, Thorsten Knabe <linux@thorsten-knabe.de>,
zwane@commfireservices.com, zaitcev@yahoo.com,
linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch] schedule obsolete OSS drivers for removal
Date: Fri, 6 Jan 2006 14:48:47 +0200 (EET) [thread overview]
Message-ID: <Pine.LNX.4.61.0601061419560.2371@zeus.compusonic.fi> (raw)
In-Reply-To: <20060106103436.GB24929@boogie.lpds.sztaki.hu>
On Fri, 6 Jan 2006, Gabor Gombas wrote:
> On Fri, Jan 06, 2006 at 03:36:47AM +0200, Hannu Savolainen wrote:
>
> > There are two very opposite approaches to do a sound subsystem. The ALSA
> > way is to expose every single detail of the hardware to the applications
> > and to allow (or force) application developers to deal with them. The OSS
> > approach is to provide maximum device abstraction in the API level (by
> > isolating the apps from the hardware as much as practically possible).
>
> Well, then it is quite clear to me: you can build an OSS-like interface
> on top of ALSA, but you cannot build an ALSA-like interface on top of
> OSS.
This is not entirely correct. An alsa-lib compatible library can be
implemented on top of OSS. It has already been done up to some degree for
the audio and mixer parts (sequencer/MIDI support is under work just now).
I agree this is bit inpractical solution since ALSA has some 1500 library
functions (and more to be added in the future). It is very difficult to
test such library because just a limited subset of them has been used by
any of the ALSA apps we were able to get working. In fact it looks like
two ALSA apps (for similar purpose) may have been implemented using very
different sets of ALSA functions (with relatively small overlap).
> This implies that an ALSA-like interface should be in the kernel,
> and an OSS-like interface should be implemented on top of it in
> userspace for those who do not need all the features. This way both
> camps are satisfied.
Or full ALSA library could be implemented on top of the OSS drivers. Or
OSS can be modified to support ALSA's kernel level driver interface (which
is not documented). Also in these ways both camps are satisfied.
Best regards,
Hannu
-----
Hannu Savolainen (hannu@opensound.com)
http://www.opensound.com (Open Sound System (OSS))
http://www.compusonic.fi (Finnish OSS pages)
OH2GLH QTH: Karkkila, Finland LOC: KP20CM
next prev parent reply other threads:[~2006-01-06 12:51 UTC|newest]
Thread overview: 289+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-26 15:08 [2.6 patch] schedule obsolete OSS drivers for removal Adrian Bunk
2005-07-26 15:41 ` Jesper Juhl
2005-07-26 15:46 ` Adrian Bunk
2005-07-26 15:41 ` Thomas Sailer
2005-07-26 15:48 ` Jeff Garzik
2005-07-26 16:04 ` Adrian Bunk
2005-07-26 16:49 ` Lee Revell
2005-07-26 17:49 ` John W. Linville
2005-07-26 17:03 ` Gene Heskett
2005-07-26 18:13 ` Adrian Bunk
2005-07-27 3:19 ` Gene Heskett
2005-07-26 15:51 ` Lee Revell
2005-07-26 15:57 ` Jeff Garzik
2005-07-26 16:02 ` Lee Revell
2005-07-27 18:24 ` Adrian Bunk
2005-07-27 20:31 ` John W. Linville
2005-07-27 20:43 ` Jeff Garzik
2005-07-28 14:00 ` Alan Cox
2005-07-28 13:43 ` Jaroslav Kysela
2005-07-28 14:15 ` Adrian Bunk
2006-01-03 13:14 ` Adrian Bunk
2005-07-26 16:30 ` Adrian Bunk
2005-07-26 16:17 ` Andrew Haninger
2005-07-31 19:29 ` Adrian Bunk
2005-07-26 16:27 ` Zach Brown
2005-07-26 21:41 ` Krzysztof Halasa
2005-07-26 23:38 ` Zoran Dzelajlija
2005-07-27 23:28 ` Lee Revell
2005-07-27 23:58 ` Rogério Brito
2005-07-28 8:09 ` Takashi Iwai
2005-07-31 19:36 ` Adrian Bunk
2005-07-27 18:39 ` Kyle McMartin
2005-07-28 3:01 ` [parisc-linux] " Randolph Chung
2005-07-28 14:14 ` Adrian Bunk
2005-07-28 15:04 ` Thorsten Knabe
2005-07-28 15:46 ` Adrian Bunk
2005-07-28 18:33 ` [Alsa-devel] " Lee Revell
2005-07-29 6:52 ` Jaroslav Kysela
2005-07-29 15:16 ` Adrian Bunk
2005-07-29 15:58 ` Thorsten Knabe
2005-07-31 19:39 ` Adrian Bunk
2005-08-01 14:26 ` Andrew Haninger
2005-08-02 0:13 ` Thorsten Knabe
2005-08-02 5:05 ` Lee Revell
2005-08-02 12:59 ` James Courtier-Dutton
2005-08-02 15:55 ` Thorsten Knabe
2005-07-31 13:38 ` James Courtier-Dutton
2006-01-03 13:21 ` Andi Kleen
2006-01-03 13:47 ` Alistair John Strachan
2006-01-03 13:52 ` Andi Kleen
2006-01-03 13:58 ` David Lang
2006-01-03 14:33 ` Alistair John Strachan
2006-01-03 14:34 ` Alistair John Strachan
2006-01-03 14:01 ` Alistair John Strachan
2006-01-03 18:24 ` Lee Revell
[not found] ` <mailman.1136300646.6679.linux-kernel2news@redhat.com>
2006-01-04 11:13 ` Pete Zaitcev
2006-01-04 11:16 ` Jaroslav Kysela
2006-01-03 14:38 ` Jan Engelhardt
2006-01-03 14:41 ` Alistair John Strachan
2006-01-03 14:50 ` Jan Engelhardt
2006-01-03 15:22 ` Alistair John Strachan
2006-01-03 16:05 ` Tomasz Torcz
2006-01-03 16:29 ` Alistair John Strachan
2006-01-03 17:03 ` Olivier Galibert
2006-01-03 17:16 ` Alistair John Strachan
2006-01-03 19:24 ` Olivier Galibert
2006-01-03 19:37 ` Adrian Bunk
2006-01-03 21:40 ` Olivier Galibert
2006-01-03 23:10 ` Tomasz Kłoczko
2006-01-04 0:33 ` Thomas Sailer
2006-01-04 1:48 ` Olivier Galibert
2006-01-04 9:03 ` Jan Engelhardt
2006-01-04 9:37 ` [OT] ALSA userspace API complexity Alistair John Strachan
[not found] ` <mailman.1136368805.14661.linux-kernel2news@redhat.com>
2006-01-04 11:00 ` Pete Zaitcev
2006-01-04 11:35 ` Jaroslav Kysela
2006-01-04 11:47 ` Pete Zaitcev
2006-01-04 14:23 ` Alistair John Strachan
2006-01-05 11:41 ` Olivier Galibert
2006-01-05 12:01 ` Tomasz Kłoczko
2006-01-05 12:23 ` Jaroslav Kysela
2006-01-05 14:21 ` Olivier Galibert
2006-01-05 14:56 ` [parisc-linux] " Alan Cox
2006-01-05 21:14 ` Jan Engelhardt
2006-01-05 15:07 ` Tomasz Kłoczko
2006-01-05 16:14 ` Takashi Iwai
2006-01-05 17:19 ` Marcin Dalecki
2006-01-05 20:13 ` Tomasz Kłoczko
2006-01-07 14:32 ` Takashi Iwai
2006-01-08 2:03 ` Olivier Galibert
2006-01-08 2:26 ` Martin Drab
2006-01-08 13:21 ` Olivier Galibert
2006-01-08 13:32 ` Jaroslav Kysela
2006-01-08 23:18 ` Pavel Machek
2006-01-09 0:33 ` [Alsa-devel] " Hannu Savolainen
2006-01-09 12:24 ` Takashi Iwai
2006-01-09 17:49 ` Thierry Vignaud
2006-01-08 9:42 ` Jaroslav Kysela
2006-01-08 13:04 ` Olivier Galibert
2006-01-08 13:23 ` Jaroslav Kysela
2006-01-08 13:38 ` Marcin Dalecki
2006-01-09 0:30 ` [Alsa-devel] " Hannu Savolainen
2006-01-05 23:06 ` Hannu Savolainen
2006-01-05 23:39 ` Lee Revell
2006-01-05 23:56 ` Hannu Savolainen
2006-01-06 0:03 ` Lee Revell
2006-01-05 23:40 ` Lee Revell
2006-01-05 23:59 ` Hannu Savolainen
2006-01-06 15:03 ` Stefan Smietanowski
2006-01-06 15:48 ` Erik Mouw
2006-01-06 18:37 ` Lee Revell
2006-01-10 9:43 ` Jaroslav Kysela
2006-01-10 13:42 ` Hannu Savolainen
2006-01-10 14:08 ` Jaroslav Kysela
2006-01-10 14:17 ` Hannu Savolainen
2006-01-10 20:13 ` Marcin Dalecki
2006-01-06 0:14 ` Marcin Dalecki
2006-01-06 0:29 ` Martin Drab
2006-01-06 0:57 ` Marcin Dalecki
2006-01-06 1:49 ` Martin Drab
2006-01-06 1:21 ` Zan Lynx
2006-01-06 15:17 ` Stefan Smietanowski
2006-01-09 23:55 ` jerome lacoste
2006-01-10 2:29 ` Stefan Smietanowski
2006-01-06 3:14 ` Edgar Toernig
2006-01-06 3:33 ` Hannu Savolainen
2006-01-06 11:34 ` Florian Schmidt
2006-01-06 7:47 ` Jan Engelhardt
2006-01-07 14:45 ` Takashi Iwai
[not found] ` <Pine.LNX.4.61.0601080225500.17252@zeus.compusonic.fi>
2006-01-08 9:24 ` [Alsa-devel] " Jaroslav Kysela
2006-01-09 13:05 ` René Rebe
2006-01-09 15:10 ` Hannu Savolainen
2006-01-09 17:12 ` René Rebe
2006-01-09 21:58 ` David Lang
2006-01-09 23:20 ` John Rigg
2006-01-09 23:21 ` David Lang
2006-01-10 0:16 ` John Rigg
2006-01-10 0:29 ` David Lang
2006-01-10 0:44 ` Alan Cox
2006-01-10 1:56 ` Lee Revell
2006-01-10 1:27 ` John Rigg
2006-01-10 1:02 ` John Rigg
2006-01-10 0:48 ` Hannu Savolainen
2006-01-10 2:00 ` John Rigg
2006-01-10 2:17 ` Hannu Savolainen
[not found] ` <Pine.LNX.4.61.0601090010090.31763@zeus.compusonic.fi>
2006-01-10 10:51 ` Jaroslav Kysela
[not found] ` <Pine.LNX.4.61.0601101550390.24146@zeus.compusonic.fi>
2006-01-10 14:17 ` Jaroslav Kysela
2006-01-10 14:39 ` Adam Tlałka
2006-01-05 18:56 ` Lee Revell
2006-01-05 22:39 ` Joern Nettingsmeier
2006-01-05 23:44 ` Tomasz Kłoczko
2006-01-05 23:49 ` Olivier Galibert
2006-01-06 0:22 ` Joern Nettingsmeier
2006-01-06 1:30 ` Olivier Galibert
2006-01-06 2:20 ` Hannu Savolainen
2006-01-10 9:54 ` Jaroslav Kysela
2006-01-10 13:50 ` Hannu Savolainen
2006-01-06 0:00 ` Marcin Dalecki
2006-01-05 12:47 ` Leonard Milcin Jr.
2006-01-04 12:13 ` [2.6 patch] schedule obsolete OSS drivers for removal Joern Nettingsmeier
2006-01-04 12:35 ` Andi Kleen
2006-01-04 12:41 ` Jaroslav Kysela
2006-01-04 17:31 ` Alistair John Strachan
2006-01-04 17:48 ` Takashi Iwai
2006-01-05 6:42 ` Lee Revell
2006-01-03 18:28 ` Lee Revell
2006-01-03 19:30 ` Thomas Sailer
2006-01-03 19:37 ` Jaroslav Kysela
2006-01-03 19:56 ` Thomas Sailer
2006-01-03 20:06 ` Jaroslav Kysela
2006-01-04 0:23 ` Thomas Sailer
2006-01-03 22:39 ` James Courtier-Dutton
2006-01-03 20:22 ` Takashi Iwai
2006-01-03 20:37 ` Tomasz Torcz
2006-01-03 20:44 ` Takashi Iwai
2006-01-03 20:56 ` Jesper Juhl
2006-01-03 21:56 ` Adrian Bunk
2006-01-03 22:11 ` Jesper Juhl
2006-01-04 11:46 ` Takashi Iwai
2006-01-04 14:46 ` Jan Engelhardt
2006-01-04 16:43 ` Marcin Dalecki
2006-01-05 10:57 ` Jan Engelhardt
2006-01-05 12:44 ` Marcin Dalecki
2006-01-05 18:33 ` Lee Revell
2006-01-05 20:03 ` Marcin Dalecki
2006-01-05 20:05 ` Lee Revell
2006-01-05 20:18 ` Marcin Dalecki
2006-01-05 20:28 ` Lee Revell
2006-01-05 20:32 ` Marcin Dalecki
2006-01-05 20:39 ` Lee Revell
2006-01-05 20:32 ` Lee Revell
2006-01-05 20:54 ` Marcin Dalecki
2006-01-05 21:01 ` Lee Revell
2006-01-05 21:43 ` Marcin Dalecki
2006-01-05 21:47 ` Lee Revell
2006-01-05 23:35 ` Jesper Juhl
2006-01-06 0:04 ` Marcin Dalecki
2006-01-06 0:08 ` Jesper Juhl
2006-01-06 1:36 ` Hannu Savolainen
2006-01-06 9:54 ` James Courtier-Dutton
2006-01-06 13:37 ` Hannu Savolainen
2006-01-06 10:34 ` Gabor Gombas
2006-01-06 12:48 ` Hannu Savolainen [this message]
2006-01-07 14:09 ` Takashi Iwai
2006-01-07 14:57 ` Marcin Dalecki
2006-01-08 0:21 ` Hannu Savolainen
2006-01-06 2:40 ` Diego Calleja
2006-01-06 14:57 ` Olivier Galibert
2006-01-06 20:26 ` Jaroslav Kysela
2006-01-07 0:40 ` Marcin Dalecki
2006-01-07 0:56 ` Olivier Galibert
2006-01-05 23:19 ` Hannu Savolainen
2006-01-05 23:33 ` Lee Revell
2006-01-06 13:20 ` caszonyi
2006-01-06 13:43 ` James Courtier-Dutton
2006-01-06 18:24 ` Lee Revell
2006-01-06 18:27 ` Lee Revell
2006-01-04 20:12 ` Kyle Moffett
2006-01-04 22:25 ` Olivier Galibert
2006-01-03 22:13 ` Tomasz Torcz
2006-01-03 23:10 ` Adrian Bunk
2006-01-03 23:51 ` Tomasz Kłoczko
2006-01-04 0:03 ` Adrian Bunk
2006-01-04 0:46 ` Tomasz Kłoczko
2006-01-04 1:01 ` Adrian Bunk
2006-01-04 2:51 ` Tomasz Kłoczko
2006-01-04 8:50 ` Alan Cox
2006-01-04 13:21 ` Greg Louis
2006-01-04 14:41 ` Adrian Bunk
2006-01-04 10:37 ` tapas
2006-01-04 17:28 ` Alistair John Strachan
2006-01-05 7:14 ` Jan Engelhardt
2006-01-04 17:54 ` Takashi Iwai
2006-01-04 18:17 ` Florian Schmidt
2006-01-04 19:28 ` Marcin Dalecki
2006-01-04 19:52 ` Florian Schmidt
2006-01-05 7:11 ` Jan Engelhardt
2006-01-05 11:15 ` Takashi Iwai
2006-01-05 21:20 ` Jim Crilly
2006-01-05 7:11 ` Lee Revell
2006-01-05 19:09 ` Edgar Toernig
2006-01-05 19:29 ` Lee Revell
2006-01-05 20:19 ` Lee Revell
2006-01-05 21:05 ` Edgar Toernig
2006-01-05 21:10 ` Lee Revell
2006-01-05 20:24 ` Edgar Toernig
2006-01-05 20:29 ` Lee Revell
2006-01-05 7:16 ` Lee Revell
2006-01-05 11:43 ` Florian Schmidt
2006-01-05 17:48 ` Lee Revell
2006-01-08 21:07 ` Ville Herva
2006-01-08 21:44 ` Lee Revell
2006-01-09 8:16 ` Ville Herva
2006-01-09 13:52 ` Lee Revell
2006-01-09 14:22 ` Ville Herva
2006-01-09 15:18 ` Lee Revell
2006-01-09 16:21 ` Ville Herva
2006-01-09 16:22 ` Lee Revell
2006-01-05 18:36 ` Lee Revell
2006-01-05 18:47 ` Tomasz Torcz
2006-01-05 19:10 ` Lee Revell
2006-01-05 19:15 ` Florian Schmidt
2006-01-04 0:28 ` Stefan Smietanowski
2006-01-04 1:38 ` Tomasz Kłoczko
2006-01-04 9:48 ` Stefan Smietanowski
2006-01-05 3:03 ` Peter Bortas
2006-01-05 7:13 ` Jan Engelhardt
2006-01-05 7:19 ` Lee Revell
2006-01-05 8:41 ` Stefan Smietanowski
2006-01-05 9:57 ` Peter Bortas
2006-01-03 17:09 ` Jan Engelhardt
2005-10-30 10:51 Adrian Bunk
2005-10-30 13:41 ` Gene Heskett
2005-10-30 13:51 ` Adrian Bunk
2005-10-30 13:53 ` Alistair John Strachan
2005-10-30 14:27 ` Kyle McMartin
2005-10-30 15:12 ` Adrian Bunk
2005-10-30 15:19 ` Kyle McMartin
2005-10-31 16:50 ` Lee Revell
2005-11-01 14:55 ` Adrian Bunk
2005-10-30 18:06 ` Andi Kleen
2005-10-30 18:38 ` Adrian Bunk
2005-10-30 19:35 ` Andi Kleen
2005-10-30 19:49 ` Adrian Bunk
2005-10-31 11:09 ` Takashi Iwai
2005-10-31 15:59 ` Nix
2005-10-31 16:27 ` Michael Buesch
2005-10-31 16:36 ` Nix
2005-10-31 7:06 ` Lee Revell
[not found] <5r1ql-4Af-11@gated-at.bofh.it>
[not found] ` <5r2mU-63n-79@gated-at.bofh.it>
[not found] ` <5r2FQ-6FS-37@gated-at.bofh.it>
[not found] ` <5r3C3-88G-55@gated-at.bofh.it>
[not found] ` <5r4ey-wy-17@gated-at.bofh.it>
[not found] ` <5r4of-Wo-39@gated-at.bofh.it>
[not found] ` <5r50O-1IR-3@gated-at.bofh.it>
[not found] ` <5r5k8-2kx-1@gated-at.bofh.it>
[not found] ` <5r72E-4AS-5@gated-at.bofh.it>
[not found] ` <5rcOF-4ci-1@gated-at.bofh.it>
[not found] ` <5rgSv-1KJ-41@gated-at.bofh.it>
2006-01-04 14:03 ` Patrizio Bassi
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