On Fri, Sep 26, 2008 at 10:49 AM, Richard Spindler <richard.spindler(a)gmail.com> wrote: Exactly the same thing here, for Sonic Visualiser. PortAudio gives you a quick, cheap way to get basic playback support, cross-platform, for an application that is already using a callback driver style. It has all sorts of inconsistencies and deficiencies but for that basic task, PAv19 works fine. I do also have a PulseAudio output layer in the current SVN versions of Sonic Visualiser, and that works nicely (when it works at all -- obviously you have to have a PulseAudio server). But it was far more complicated to write -- I don't have all the details right yet -- and it's not cross-platform. As a Linux _user_ I like PulseAudio; I wrote the Pulse output layer for SV because I wanted to use it myself. (Future versions of Rosegarden will probably support Pulse too, at least for playback.) I actually have trouble imagining any application for which the raw ALSA API is a good choice, but perhaps I'm not imaginative enough. Chris

There is also pulseaudio, which is quite simple to program and use in simple apps. Victor ----- Original Message ----- From: "David Cournapeau" <cournape(a)gmail.com> To: "Richard Spindler" <richard.spindler(a)gmail.com> Cc: <Linux-audio-dev(a)lists.linuxaudio.org> Sent: Friday, September 26, 2008 4:36 PM Subject: Re: [LAD] Guide to Linux Sound APIs

On Sun, Sep 28, 2008 at 4:36 PM, David Cournapeau <cournape(a)gmail.com> wrote: It's the default sound server in Ubuntu 8.04. Pretty sure it'd be the default in Fedora, I think the o/p works for redhat. Ubuntu + Fedora would make up a decent percentage of new linux installations. - Steve

On Sun, 2008-09-28 at 16:04 +0900, David Cournapeau wrote: As Lennart tried to make reasonably clear, the primary goal of PulseAudio is NOT to act as a new API, but to act as a new *infrastructure* that supports existing APIs transparently. I am sure that he would be happy if it eventually takes over the world and everybody writes apps using its API, but that doesn't appear to be the goal right now. --p

On Sun, Sep 28, 2008 at 4:38 PM, Paul Davis <paul(a)linuxaudiosystems.com> wrote: I got that, but you missed the context of the discussion: both victor and me were talking about the API. Victor mentioned pulseaudio API as an easy one, and I expressed my concern about availability of pulseaudio in my case (extremely limited audio needs, but available on many distributions, potentially quite old). cheers, David

On Monday 29 September 2008, Lennart Poettering wrote: I believe (no docs to confirm or deny this) it also is hard coded to pick the first device it finds as the default output device. Since I relegated the mobo's el simple chipset for use by skype et all, then installed an Audigy2 for the real utility audio. But PA refuses to use the Audigy2. So it gets nuked. And then sound Just Works(TM). I'd complain, but there seems to be no path to the actual developers other than Bugzilla, and my Bugzilla entries have been "won't fix"ed. If there is no path from the user who finds his system crippled, leaving him no choice but to nuke as much as he can in order to get any sound. That of course is not conducive to actually getting it fixed. Fix that, so there is a working dialog path back from the user to the developer, and maybe it can be made to work. As it is, the documentation on it is non-existent, and we the users feel like we're battling with M$, a generally futile endeavor, and that is gonna lead to a lot of profanity & name calling. This is after all, linux, where choice is a talking point. I'm deliberately trying to be civil, but this is as civil as I can manage after the treatment I've received when I fussed about it. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Practical people would be more practical if they would take a little more time for dreaming. -- J. P. McEvoy

On Tuesday 30 September 2008, Wolfgang Woehl wrote: In the case of Fedora, no, the buck stops there, and I'm made to be the bad-ass. It looks to me as if they are deliberately shielding the developers, or maybe they are locked in a closet off the lunch room living on scraps? I dunno. What I did come away with was that I was on my own, and that PA simply ignored the 8 line stanza in my modprobe.conf that makes it all Just Work when PA is prevented from screwing with things. Without any meaningful docs on how to go about configuring it, if indeed it is configurable, the easiest thing to do is remove as much of it as possible without nukeing kde itself. Yes, that is a given. But in order to do this intelligently, there must be docs of the 'this does that effect' in existence. Apparently there are none or URL's would have been offered. Sometimes it can be quite educational in which case people like me become the help desk others are looking for, and I do that where I can. Other times, and PA is a heck of a good example, it is frustrating to the point of saying to hell with it. Probably, and at about the same pace as NM moves, which is glacial. Dumbassed typo's fixing takes a year to make it from patch submission to distro included. That, when it effects 90% of the users, should be a week. Max. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Get forgiveness now -- tomorrow you may no longer feel guilty.

On Tuesday 30 September 2008, Wolfgang Woehl wrote: Network Manager -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) "I teleported home one night With Ron and Sid and Meg. Ron stole Meggie's heart away And I got Sidney's leg." - A poem about matter transference beams.

On Tuesday 30 September 2008, Lennart Poettering wrote: Which explains that, thanks. Essentially, yes. Although I don't recall that randomness has ever reared it head here, running F8, and always a bleeding edge kernel, 2.6.27-rc7-4 ATM. Can modprobe.conf be trained to use these HAL UDI's? And now they have been. This msg marked important so kmail won't expire it, and I'll certainly check them out when I get the video's poor performance in hand. The R600 ATI chipset support has no acceleration written yet. Don't be silly. Just a simple 'man pulseaudio' should bring up a URL or two at the bottom for questions not answered above in the man pages. ISTR I did wind up there once, and it required I setup yet another account, complete with passwords etc before I could post. I must have 30 of them things now & the wall is covered with cryptic postits I can no longer remember what site the noted username & password belong to. CRS reigns supreme for disagreeable tasks. As for google, the most common advice I got from there was to nuke it. Now I'm starting all over with a new motherboard, with a much better 8 channel audio system, so I might retire the Creative SB0400, Audigy2 and forget about skype & see if I can make it now work. vz has all the other servers blocked anyway, so I can never get a confirmation email from any of them except skype, and as that was 2 years ago, I expect its history now. vz can't stand the competition I guess. Fixing a typu should not require 6 months of testing. I have always been able to edit the correct ethx file in /etc/sysconfig/networking and make it work here, totally inhouse fixed addressing. I use dd-wrt to make the network connection, running on an old x86 box, headless, driveless. So NM is a solution looking for a problem to fix that doesn't exist here. Were I 20 years younger, which would put me in my mid-50's when I was carving machine code for 8 bit machines, I most certainly would. But at 74, I find I'm doing a lot of stuff in bash only. I'm not fully groking the new c99 syntax, its a far cry from either of my K&R Ansi C manuals. Thank you, Lennart. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters.

On Wednesday 01 October 2008, victor wrote: Well, I did it yesterday, read it and get jealous: [root@coyote ~]# dmesg|grep Bogo [ 0.000999] Calibrating delay loop (skipped), value calculated using timer frequency.. 4420.30 BogoMIPS (lpj=2210151) [ 0.000999] Calibrating delay using timer specific routine.. 4420.64 BogoMIPS (lpj=2210323) [ 0.000999] Calibrating delay using timer specific routine.. 4420.44 BogoMIPS (lpj=2210221) [ 0.000999] Calibrating delay using timer specific routine.. 4420.44 BogoMIPS (lpj=2210220) [ 0.247012] Total of 4 processors activated (17681.83 BogoMIPS). Unforch, I have not found a way to drive this video card with anything but plain old radeon. R600 chipset support is very thin & non-accelerated, and experimental according to Xorg.0.log. glxgears is about 300 fps. tvtime won't run, but now sketchup does, which was the point of this $500+ expenditure. :) Also, since real live gets in the way, this summers project has been: <http://gene.homelinux.net:85/gene/Garage-pix> With the exception of the folks in the pix who helped raise the trusses, and a couple of hours nailing shingles, the rest of that came from my head and hands since about may 26th. I still have some soffit to install on the back and gable end. But its doing an intermittent drizzle here today, so not much is being done, instead I just rebuilt my modprobe.conf (something mucked it up) and now I have sound again. I have had that file diddled by supposedly un-connected software so many times I am about to set the -i flag on that file, just to see who bitches about it. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Can't open /usr/share/games/fortunes/fortunes.dat. Humm, my fortune database is ??? Better yet, where the hell did the surplus 's' come from? Here is that script: [root@coyote bin]# cat makesig echo '-- ' >~/signature echo Cheers, Gene >>~/signature cat ~/sigbase >>~/signature /usr/bin/fortune -s >>~/signature Me goes off scratching balding head...

On Tuesday 30 September 2008, Lennart Poettering wrote: What is pavucontrol? It was never, ever, part of the kde menu's on this F8, KDE-3.5.9 equipt x86 box. The tool may well work as advertised, but first it has to be found before it can be used. That is part of the problem, if this is a feedback path, this is the first mention of it that I have noticed. Actual URL's please, my acronym translator needs a new dictionary. :) I will mark this message as important, and check it out as I build another box to replace this one early next week. Thanks for the URL. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Politics, as a practice, whatever its professions, has always been the systematic organisation of hatreds. -- Henry Adams, "The Education of Henry Adams"

Lennart Poettering: wrote: Gene, can I say that you want to make sure to really understand what Lennart says here? The power pavucontrol gives you as an audio user is massive. Stuff like setting devices for live streams of applications used to be buried deep deep down. pulseaudio provides a view of your sound devices and sound sources that was simply not there before. It provides what most people want, actually, only that ... ... it needs way better integration from distributions. That's where userland is important. Make the effort to report KDE's supposed lack of pavucontrol (Lennart, couldn't you have called the thing pulsecontrol? Ach!) to redhat and it will get fixed. Like Lennart says: He's not even aware of it because he's on gnome. Help them and people will benefit from it. Wolfgang

On Tuesday 30 September 2008, Lennart Poettering wrote: Which is where I filed the first report, and got a "won't fix" answer. I don't recall the bz number atm. Humm, is doesn't work considered a bug? :) -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) "I teleported home one night With Ron and Sid and Meg. Ron stole Meggie's heart away And I got Sidney's leg." - A poem about matter transference beams.

On Tue, 30.09.08 16:31, Chris Cannam (cannam(a)all-day-breakfast.com) wrote: File bugs against Ubuntu. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4

Chris Cannam: There was a thread "jack and flash" on lau (2/2008,http://www.nabble.com/jack-and-flash-td15402872.html) where this came up. Search for pulseaudio in the spread-out thread. Basically Lennart made pulseaudio work with flash streams. As there are jack plugins for pulseaudio anyway you could record youtube audio -- coming from firefox -- in ardour. It involved http://www.pulseaudio.org/wiki/FlashPlayer9Solution (Would be cool to have a date on that page, btw. Like is the Update recent?) Wolfgang

On Tue, 30.09.08 23:41, hollunder(a)gmx.at (hollunder(a)gmx.at) wrote: padevchooser (i.e. the "pa device chooser") is obsolete. People shouldn't ship that at all. pavucontrol is the only tool that matters. On Fedora it is the default volume control (at least in GNOME). Also, the current version of pavucontrol has a button for showing the menu to make thinks more accesible. I am wondering why Ubuntu Studio is shipping PA at all. PA is not useful for audio production. There will be an option to change the output port for a sound card on-the-fly. I.e. from stereo analog, to 5.1 analog to spdif and back. But that still needs time since ALSA currently doesn't have an API that exports that information in a useful way. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4

On Monday 29 September 2008, Lennart Poettering wrote: Yes, they enable it, but its not ready for prime time, so it often winds up being disabled in order to get any sound at all. I have one such system myself. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) I didn't get sophisticated -- I just got tired. But maybe that's what sophisticated is -- being tired. -- Rita Gain

Am I the only person to be uncertain about ALSA's stated goals, what they intend to do and in what direction they are going?