Re: csound vs olpcsound
Very strange, but olpcsound is based on csound 5.08. As far as I know there is no fedora package for csound 5.08 or 5.10. If there is, it should be no problem moving from olpcsound to csound. I would not like to move from olpcsound to csound 5.03, though. olpcsound is not a fork, it is based on the same sources as Csound5, with less components and dependencies. It is just a build option (for scons). Victor - Original Message - From: Peter Robinson Date: Wednesday, March 25, 2009 10:12 am Subject: csound vs olpcsound To: OLPC Developer's List > Hi All, > > I know that olpcsound was originally a fork of csound for olpc. I > noticed just now on the sugarlabs page for the 0.84 release [1] that > it depends on csound 5.08/5.10 and makes no mention of > olpcsound. Does > that mean that olpcsound is now obsolete and that once we get csound > in Fedora upgraded to a remotely recent version that olpcsound can > just disappear? > > Cheers, > Peter > > [1] http://wiki.sugarlabs.org/go/Development_Team/Sugar_Platform/0.84 > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
joyride, staging builds, sugar releases
Sorry to insist on this, but I have not got it quite yet. Joyrides => obsolete (even though the builder script keeps churning them out and telling the olpc devel list). staging => what are these? Obsolete too? release builds => only last week there was a release build announced on the olpc devel list. Are these obsolete too? And another thing: olpc-update is not to be used anymore, or is it still on? Any clarification greatly appreciated! Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
updating activities
Trying to update activities here, from the sugar control panel. It says it cannot access the network to check for updates, even if I have a an ethernet connection to the XO that is working (and I can ping the outside world). Suggestions? Thanks Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
devel OS upgrades, joyrides, sucrose
Hi everyone, pardon my confusion, but could you explain how things should be done? I want to get the latest development OS for the XO. Last year, I was using olpc-update $ olpc-update joyride-N Now my question is: how does the latest software produced by sugarlabs gets into the equation? Do I get the latest sucrose etc by upgrading to the latest joyride? Who is managing Joyrides and how does the latest sugar software gets included? Thanks Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: status of OLPC project
Well, I am sorry I did not know the situation, so that is why I asked. However, I did not ask about who was laid off, but just wanted to know who is taking care of what now. At some point, this will need to be divulged, I expect? Victor - Original Message - From: "C. Scott Ananian" To: "Bastien" Cc: Sent: Friday, January 09, 2009 6:10 PM Subject: Re: status of OLPC project > On Fri, Jan 9, 2009 at 11:20 AM, Bastien > wrote: >> Victor Lazzarini writes: >> >>> [...] In other words, it would be useful to get a who's who for the >>> project. >> >> +1 > > Please have some consideration for the recently unemployed. Not > everyone wants this fact announced to the world, and Ed would > certainly be out of place as manager if he were to do so preemptively. > I don't know, but there may even be contractors or others who OLPC > management has not been able to get in touch with, who don't yet know > their job status. Please be patient. > > I expect those who are comfortable announcing their employment status > will do so, here or in some other appropriate venue. > --scott > > -- > ( http://cscott.net/ ) > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: status of OLPC project
Thanks. Walter has kindly replied to me already, so it looks like sugar labs is my destination. Hope to be able to clear up all my marking by the end of next week and by then I think will also know where I actually fit into this new scheme of things. I'm happy to be back. Regards Victor At 14:54 09/01/2009, Benjamin M. Schwartz wrote: >-BEGIN PGP SIGNED MESSAGE- >Hash: SHA1 > >Victor Lazzarini wrote: > > Hi everyone, > > > > I have not been able to work on anything new for OLPC for the > past four months, > > given my heavy teaching schedule. However, now I am just about to go on > > research leave and one of my goals was to do some work on the music/sound > > side of things for the XO. So I am now wondering whether 1) there is > > any work to > > do, and 2) who to liaise at OLPC, since things seem to have changed > > dramatically, > > particularly with Jim Gettys leaving. In other words, it would be useful to > > get a who's who for the project. Also, what bits are going to be > moved out to > > sugarlabs (so I wonder if they are the ones to work for now, as > far as audio > > development is concerned). > >1) There is lots of work to do. There are 500,000 XO users and rising, >virtually all of whom run Sugar. They need and want updates and new >functionality for learning. They don't care about where this happens in >some corporate shell game. Sugar Labs is also expanding Sugar onto non-XO >computers. We are growing. > >2) I can't help with this. > >Regarding with whom to work: I would definitely place audio development >under the Sugar Labs umbrella, unless the work in question is somehow >specific to the XO hardware. For you, working on music, I think the place >to be is Sugar Labs. The people to talk to are Walter, Tomeu, and anyone >else on the sugar mailing list, which is now sugar-de...@lists.sugarlabs.org > >I'm excited to have you back in the project. > >- --Ben >-BEGIN PGP SIGNATURE- >Version: GnuPG v2.0.9 (GNU/Linux) > >iEYEARECAAYFAklnZRsACgkQUJT6e6HFtqSldgCdFi308zS0WFozkwcVEAUMYYxY >uzoAoJ8EcF6SZQnBDMpgc4+VL9Ig2OtZ >=lnvp >-END PGP SIGNATURE- Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
status of OLPC project
Hi everyone, I have not been able to work on anything new for OLPC for the past four months, given my heavy teaching schedule. However, now I am just about to go on research leave and one of my goals was to do some work on the music/sound side of things for the XO. So I am now wondering whether 1) there is any work to do, and 2) who to liaise at OLPC, since things seem to have changed dramatically, particularly with Jim Gettys leaving. In other words, it would be useful to get a who's who for the project. Also, what bits are going to be moved out to sugarlabs (so I wonder if they are the ones to work for now, as far as audio development is concerned). I am very sorry for all those leaving and wish all the best for their future. Thanks Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: CSound server questions
I have updated the Wiki pages regarding using virtual MIDI connections, which should be the way to connect from Scratch to Csound (see http://wiki.laptop.org/go/Csound#MIDI_connections and http://wiki.laptop.org/go/Sound#Low-level). I don't know anything about Squeak, but I'll get a MIDI module for Python and will try putting together an example, which should be easily translated. And yes, it is possible to launch a Csound process to listen in for MIDI in a virmidi connection. Victor - Original Message - From: "John Maloney" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: "Bert Freudenberg" <[EMAIL PROTECTED]>; "OLPC Development" Sent: Monday, September 01, 2008 2:11 PM Subject: Re: CSound server questions > Hi, Victor and Bert. > > I agree with Bert -- it would probably be most convenient for Scratch to > use the MIDI option, if possible. Ideally, it would work the same as MIDI > does on other versions of Linux, so we could just use the Squeak MIDI > Plugin. That said, I have not explored how the MIDI plugin works on > Linux. Supposedly you can use it to talk to the Timidity software MIDI > synth. > > Could we arrange for the shell script that launches Scratch to also > launch the CSound server when Scratch is launched and close it when > Scratch quits? > > -- John > > > On Aug 31, 2008, at 2:50 PM, victor wrote: > >> No, you have to run it with a command-line option and then use aconnect >> I suppose. I need to check how to do soft connections, >> as I am used to just connecting straight to hardware . >> >> Victor >> >> - Original Message - From: "Bert Freudenberg" >> <[EMAIL PROTECTED] >> > >> To: "OLPC Development" >> Cc: "John Maloney" <[EMAIL PROTECTED]> >> Sent: Sunday, August 31, 2008 7:01 PM >> Subject: Re: CSound server questions >> >> >>> Am 31.08.2008 um 19:04 schrieb victor: >>>> Well, you can ask me. I suppose there are various ways you could >>>> connect to Csound: >>>> >>>> 1. using the API (via a C or C++ squeak plugin >>>> module, if it is possible to do these things), >>>> 2. through MIDI (if >>>> squeak can output MIDI and we can then connect via alsa midi) >>>> 3. OSC >>>> 4. IP socket (by starting a minimal server written in Python >>>> and issuing Python commands as string data) >>>> 5. line events at stdin (a little awkward) >>> I like the MIDI option. Squeak does have a MIDI plugin (although I am >>> not entirely sure how functional it is currently). >>> Is CSound registered as a MIDI device by default? >>> - Bert - >>> ___ >>> Devel mailing list >>> Devel@lists.laptop.org >>> http://lists.laptop.org/listinfo/devel > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: CSound server questions
yes, that is possible. I will provide an example as soon as Iam back at work in Ireland.Victor- Original Message -From: John Maloney <[EMAIL PROTECTED]>Date: Monday, September 1, 2008 2:02 pmSubject: Re: CSound server questionsTo: victor <[EMAIL PROTECTED]>Cc: Bert Freudenberg <[EMAIL PROTECTED]>, OLPC Development > Hi, Victor and Bert.> > I agree with Bert -- it would probably be most convenient for > Scratch > to use the MIDI option, if possible. Ideally, it would work the > same > as MIDI does on other versions of Linux, so we could just use > the > Squeak MIDI Plugin. That said, I have not explored how the MIDI > plugin > works on Linux. Supposedly you can use it to talk to the > Timidity > software MIDI synth.> > Could we arrange for the shell script that launches Scratch to > also > launch the CSound server when Scratch is launched and close it > when > Scratch quits?> >-- John> > > On Aug 31, 2008, at 2:50 PM, victor wrote:> > > No, you have to run it with a command-line option and then > use > > aconnect I suppose. I need to check how to do soft connections,> > as I am used to just connecting straight to hardware .> >> > Victor> >> > - Original Message - From: "Bert Freudenberg" > <[EMAIL PROTECTED] > > >> > To: "OLPC Development" > > Cc: "John Maloney" <[EMAIL PROTECTED]>> > Sent: Sunday, August 31, 2008 7:01 PM> > Subject: Re: CSound server questions> >> >> >> Am 31.08.2008 um 19:04 schrieb victor:> >>> Well, you can ask me. I suppose there are various ways you could> >>> connect to Csound:> >>>> >>> 1. using the API (via a C or C++ squeak plugin> >>> module, if it is possible to do these things),> >>> 2. through MIDI (if> >>> squeak can output MIDI and we can then connect via alsa midi)> >>> 3. OSC> >>> 4. IP socket (by starting a minimal server written in Python> >>> and issuing Python commands as string data)> >>> 5. line events at stdin (a little awkward)> >> I like the MIDI option. Squeak does have a MIDI plugin > (although I > >> am not entirely sure how functional it is currently).> >> Is CSound registered as a MIDI device by default?> >> - Bert -> >> ___> >> Devel mailing list> >> Devel@lists.laptop.org> >> http://lists.laptop.org/listinfo/devel> ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: CSound server questions
No, you have to run it with a command-line option and then use aconnect I suppose. I need to check how to do soft connections, as I am used to just connecting straight to hardware . Victor - Original Message - From: "Bert Freudenberg" <[EMAIL PROTECTED]> To: "OLPC Development" Cc: "John Maloney" <[EMAIL PROTECTED]> Sent: Sunday, August 31, 2008 7:01 PM Subject: Re: CSound server questions > > Am 31.08.2008 um 19:04 schrieb victor: > >> Well, you can ask me. I suppose there are various ways you could >> connect to Csound: >> >> 1. using the API (via a C or C++ squeak plugin >> module, if it is possible to do these things), >> 2. through MIDI (if >> squeak can output MIDI and we can then connect via alsa midi) >> 3. OSC >> 4. IP socket (by starting a minimal server written in Python >> and issuing Python commands as string data) >> 5. line events at stdin (a little awkward) > > I like the MIDI option. Squeak does have a MIDI plugin (although I am > not entirely sure how functional it is currently). > > Is CSound registered as a MIDI device by default? > > - Bert - > > > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: CSound server questions
Well, you can ask me. I suppose there are various ways you could connect to Csound: 1. using the API (via a C or C++ squeak plugin module, if it is possible to do these things), 2. through MIDI (if squeak can output MIDI and we can then connect via alsa midi) 3. OSC 4. IP socket (by starting a minimal server written in Python and issuing Python commands as string data) 5. line events at stdin (a little awkward) Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Csound supports OSC, but I have to check whether we are including it
Csound supports OSC, but I have to check whether we are including it on olpcsound. The reason we might have left it out is that I have heard through the grapevine that OSC was a no-no as it breaks the security model. So I suppose I should ask directly, is OSC permitted? Victor - Original Message - From: "Bert Freudenberg" <[EMAIL PROTECTED]> To: "John Maloney" <[EMAIL PROTECTED]> Cc: "victor" <[EMAIL PROTECTED]>; "C. Scott Ananian" <[EMAIL PROTECTED]>; ; "Chris Ball" <[EMAIL PROTECTED]> Sent: Friday, August 29, 2008 10:04 PM Subject: Re: CSound server questions > > Am 29.08.2008 um 23:10 schrieb John Maloney: > >> Thanks, Jim and Victor. >> >> Jim, your explanation makes sense. Good to know what the future >> direction is for OLPC and CSound. >> >> If I have questions about making Scratch use CSound, who is the best >> person to ask? > > > If it still supports OSC you could use > > http://map.squeak.org/package/61f807be-83a3-4944-bfa1-686ddac7153c > > ... but if it's indeed a library now you would need a plugin. > > - Bert - > > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: CSound server questions
I'd just like to correct, for the record, that the Csound 5 project leader, of which I am part, is and has always been John ffitch. I am the fedora package maintainer for the olpcsound subset (and I'lll probably pick up the full Csound5 package too). John has also done a substantial work in setting up the subset build. We would welcome, very much, Barry's input in Csound 5 development, if he'd like to be involved. Victor - Original Message - From: "Jim Gettys" <[EMAIL PROTECTED]> To: "John Maloney" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; ; "Chris Ball" <[EMAIL PROTECTED]>; "C. Scott Ananian" <[EMAIL PROTECTED]> Sent: Thursday, August 28, 2008 4:08 PM Subject: Re: CSound server questions > John, > > We cannot use code from Barry since he tends to work by himself, his > code is unmaintainable except by him and its licensing has also been > somewhat questionable at times, though the licening problems may have > been addressed.. Were he to be run over by a truck (God forbid!), we'd > be in a complete pickle. > > The community CSound, that Victor leads, is widely used and supported by > a large community of people. > > Previous objections of "CSound bloat" (by things like the public csound > using the TK/TCL internally to the CSound library) have been addressed > by Victor, who now has (at configure time) a version of CSound5 built > out of the same source pool that drops those dependencies. > > You can be sure that *anything* that runs on the CSound lite we run on > OLPC will run on the public full CSound used in the music community; it > is an *exact* subset of the full CSound used by everyone except Barry. > > So we are also in a very much better compatibility situation than using > Barry's version. > > Hope this explanation helps. > - Jim > > > On Wed, 2008-08-27 at 06:42 -0400, John Maloney wrote: >> Thanks for the info. >> >> I had the impression that Barry Vercoe was working on a new, light- >> weight CsoundServer. Is that not true? >> >> -- John >> >> On Aug 27, 2008, at 5:15 AM, [EMAIL PROTECTED] wrote: >> > There is no CsoundServer anymore; we use Csound as a library >> > through its API. If anyone wants some help on how to use it, to >> > play MIDI or anything else, he/she can talk to me, privately or >> > on this list. I'm away to ICMC at the moment, so replies might >> > be slow. But I'll give as much help as I can. >> > >> > Regards >> > >> > Victor >> > >> > - Original Message - >> > From: Chris Ball <[EMAIL PROTECTED]> >> > Date: Tuesday, August 26, 2008 11:35 pm >> > Subject: Re: CSound server questions >> > To: "C. Scott Ananian" <[EMAIL PROTECTED]> >> > Cc: John Maloney <[EMAIL PROTECTED]>, devel@lists.laptop.org >> > >> > > Hi, >> > > >> > >> Did you ever get a satisfactory answer to your >> > > questions? I think >> > >> Pippy contains the best examples of using csound >> > > to play sounds -- >> > >> is that right, Chris? >> > > >> > > Well, I'd say that TamTam does. :) But yes, Pippy >> > > does some basic >> > > synthesis using sinewaves and music files with csound. >> > > >> > > - Chris. >> > > -- >> > > Chris Ball <[EMAIL PROTECTED]> >> > > ___ >> > > Devel mailing list >> > > Devel@lists.laptop.org >> > > http://lists.laptop.org/listinfo/devel >> >> ___ >> Devel mailing list >> Devel@lists.laptop.org >> http://lists.laptop.org/listinfo/devel > -- > Jim Gettys <[EMAIL PROTECTED]> > One Laptop Per Child > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: CSound server questions
There is no CsoundServer anymore; we use Csound as a librarythrough its API. If anyone wants some help on how to use it, toplay MIDI or anything else, he/she can talk to me, privately oron this list. I'm away to ICMC at the moment, so replies mightbe slow. But I'll give as much help as I can.RegardsVictor- Original Message -From: Chris Ball <[EMAIL PROTECTED]>Date: Tuesday, August 26, 2008 11:35 pmSubject: Re: CSound server questionsTo: "C. Scott Ananian" <[EMAIL PROTECTED]>Cc: John Maloney <[EMAIL PROTECTED]>, devel@lists.laptop.org> Hi,> > > Did you ever get a satisfactory answer to your > questions? I think> > Pippy contains the best examples of using csound > to play sounds --> > is that right, Chris?> > Well, I'd say that TamTam does. :) But yes, Pippy > does some basic> synthesis using sinewaves and music files with csound. > > - Chris.> -- > Chris Ball <[EMAIL PROTECTED]>> ___> Devel mailing list> Devel@lists.laptop.org> http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
jack tests
Just a quick note that I have done some preliminary tests with jack as an audio server and Csound (now that Koji is back up and I could build an updated package). Performance seems OK, perhaps even slightly better than direct to alsa (but I am only testing at the terminal). I'll test it locally, then I'll see if I can get the network client working (not sure of the issues involved, but I'll try). I am keeping a record of some this work at http://wiki.laptop.org/go/Sound In the near future I will test pulseaudio too, then we'll have an idea of future possibilities. Regards Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: OS versioning
Thanks. Looking at 8.2.0 release notes I don't see any mention of ticket #7603 http://dev.laptop.org/ticket/7603 , which I suppose it is an important issue still to be satisfactorily resolved (we seem to have stalled since fedoraproject.org got attacked, as access to Koji is not back up again). We have some ideas, but they have not been implemented and tested. Regads Victor - Original Message - From: "C. Scott Ananian" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: "Michael Stone" <[EMAIL PROTECTED]>; Sent: Friday, August 22, 2008 3:28 PM Subject: Re: OS versioning > On Fri, Aug 22, 2008 at 2:31 AM, victor <[EMAIL PROTECTED]> wrote: >> Thanks everyone for their quick and comprehensive responses. > > Some more information on the correspondence between names and release > numbers can be found at: > http://wiki.laptop.org/go/Release_notes > and > http://wiki.laptop.org/go/Builds > --scott > > -- > ( http://cscott.net/ ) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [Announce] Sucrose 0.82 Final Release
Obviously not for diabetics! :) - Original Message - From: "Simon Schampijer" <[EMAIL PROTECTED]> To: "Sugar List" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; "OLPC Development" Sent: Friday, August 22, 2008 1:13 PM Subject: [Announce] Sucrose 0.82 Final Release > Watch out your teeth! > > The Sucrose 0.82 Final Release is out! > > Sucrose 0.82 is the latest version of the Sugar education platform, > consisting of Glucose, the base system environment; and Fructose, a set > of demonstration activities. > > Sucrose is released every six months and contains many new features, > improvements, bug fixes, and translations. Sucrose 0.82 continues this > tradition and is our most well-planned release to date. > > To learn more about this release please visit the detailed release notes > [1]. > > There will be another stable release (0.82.1) soon [2] and planning on > the upcoming 0.84 has been started [3]. > > Many people contributed to this release indirectly, including testing, > documentation, translation, contributing to the wiki, outreach to > education and developer communities. On behalf of the community, we give > our warmest thanks to the developers and contributors who made this > sugar release possible. > > In behalf of the sugar community, >Your release team > > [1] Release notes: > http://sugarlabs.org/go/ReleaseTeam/Releases/Sucrose/0.82 > [2] Schedule: http://sugarlabs.org/go/ReleaseTeam/Roadmap#Schedule > [3] 0.84: http://sugarlabs.org/go/ReleaseTeam/Roadmap/0.84 > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: OS versioning
Thanks everyone for their quick and comprehensive responses. Victor - Original Message - From: "Michael Stone" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Friday, August 22, 2008 6:37 AM Subject: Re: OS versioning > On Fri, Aug 22, 2008 at 06:18:47AM +0100, victor wrote: >>Hello everyone, >> >>I was trying to find the correct info on OS versioning in the wiki, but >>could not. So perhaps you can enlighten me? > > There's some information at [[Release process home]] on the wiki. I > also have some detailed (and amusing) diagrams on the subject that I > haven't managed to really finish off. Remind me when I'm awake to dig > them up for you. > >>1.Why version 8.* ? > > 8.2 == 'second major release of 2008'. (Major releases begin new > "periods of support" where "support" means that "you can ask us to make > minor releases for you based on X"). > >>2.Last release was 8.1, we are going towards 8.2, I see that, but >>was 8.1 FC7-based or FC8? Is 8.2 FC9-based? > > 8.2.* is based on F-9. > > 7.2.* and 8.1.* (i.e. official-650, official-653, official-656, > official-703, official-708, official-711) are all based on F-7. > >>3. How are olpc-2 and olpc-3 (the names of distros in >>Koji) related to OS versions? > > OLPC-2 is the second OLPC buildroot. OLPC-3 is the third OLPC buildroot. > Buildroots contain (mostly fixed) sets of packages used to construct the > controlled environment used for building other packages. > > dist-olpc3 is a koji tag which is built on top of the OLPC-3 buildroot. > > We're going to do things slightly differently for 9.1.0 or 9.2.0 release > in that we intend to start off with a koji tag like dist-olpc4-rawhide > tracking Fedora's Rawhide, then, eventually, freeze it when F-11 (or so) > is released. This way, we'll have an easier time rebasing our remaining > divergence onto the new Fedora revision. > >>4. How do build numbers, stable/joyride, relate to OS versions? > > Releases (e.g. things named 7.1.*, 7.2.*, 8.1.*, 8.2.*, 9.1.*, etc) > contain signed reference operating systems w/ no activities, signed > derivative images w/ activities, customization keys, release notes, > engineering change-order documentation, etc. > > Therefore, there's no automatic mapping between releases and build > numbers. > > Build streams, like 'joyride', 'faster', 'sugar', 'rainbow', 'xtest', > 'meshtest', etc. are just convenient monikers for collections of related > builds. Joyride, in particular, is important because it's the central > development tree comparable to other distributions' notion of 'rawhide' > or 'unstable'. > >>I need to make sure I get this all clear in my head. > > It's a bit of a morass. Unfortunately, I don't have any good ideas on > how to simplify it! (Suggestions welcome... sort-of.) > > Michael ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
OS versioning
Hello everyone, I was trying to find the correct info on OS versioning in the wiki, but could not. So perhaps you can enlighten me? 1.Why version 8.* ? 2.Last release was 8.1, we are going towards 8.2, I see that, but was 8.1 FC7-based or FC8? Is 8.2 FC9-based? 3. How are olpc-2 and olpc-3 (the names of distros in Koji) related to OS versions? 4. How do build numbers, stable/joyride, relate to OS versions? I need to make sure I get this all clear in my head. Thanks a lot Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: A-board
Thanks. I had a look at the wiki page on changing the bios, but have had not luck booting up Linux from the usb disk. It gets to a point where one of the init scripts fails (initutil.py): It tries to mount /dev/hda1 on /sysroot, but of course there is no such device. Looks like the boot image is no good. Where can I find a usable one? Victor At 16:25 18/08/2008, you wrote: >Victor Lazzarini wrote: > >>Hello everyone, >>I have an A-board in my office which I would like to bring back to >>life if possible. But on booting, I get the message >>Evaluation period has expired, halting >>Validate from 05/16/2006 to 08/23/2006. > >>Any suggestions? > >You are running an ATest that was never upgraded from Insyde bios. > >If you set the RTC clock back then you can re-establish your eval period. > >There are instructions on the wiki for upgrading an ATest from >Insyde to OFW but you will have to dig. Basically you build a >bootable usb disk and then use the 'olpcflash' utility to re-flash >your firmware image. The olpcflash repo is on dev.l.o. You will >need to build it static. > >A further complication is that we dropped support for ATest in the >EC code a long time ago. So you will have to dig through the >Firmware page and find the last firmware that supports Atest. > > >-- >Richard Smith <[EMAIL PROTECTED]> >One Laptop Per Child Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
A-board
Hello everyone, I have an A-board in my office which I would like to bring back to life if possible. But on booting, I get the message Evaluation period has expired, halting Validate from 05/16/2006 to 08/23/2006. Any suggestions? Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: comments on late joyrides re: rt performance
you are absolutely right. I can use very large buffers; however there are two things: I was using quite large ones (but not the immense ones you quoted) but say 8192 samples, and I was still getting dropouts. The larger the buffer the longer the dropouts were lasting for. Yes, I can try with larger buffers. But in any case, the target is not the MIDI app, that was just the test case, because it was simpler than hooking a keyboard and playing along. Victor - Original Message - From: "Benjamin M. Schwartz" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Saturday, August 16, 2008 9:14 PM Subject: Re: comments on late joyrides re: rt performance > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > victor wrote: > ... > | Comparing the RT audio performance of the two, I must say > | I am disappointed with how worse it has got. > ... > | One of the things I have been playing with is a little MIDI file player > | (one of the test/example activities in > devel.laptop.org/activities/csndsugui), > | which uses a soundfont synthesis engine. > > While diminished RT performance is a serious problem, it occurs to me that > a properly designed MIDI file player should not require low latency at > all. The ALSA audio design makes it easy for applications to request long > buffers.. For example, the Distance activity plays audio with > > subprocess.call(["/usr/bin/aplay", "--buffer-time=1000", fname]) > > to request a maximum-size buffer, precisely because of the latency issues > that I observed in testing. (Yes, this is incredibly ugly, but using > gstreamer in a multithreaded python app is uglier.) > > Interactive sound synthesis is a different matter, but for pure playback, > perhaps you just need a longer buffer. > > - --Ben > -BEGIN PGP SIGNATURE- > Version: GnuPG v2.0.9 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkinNTgACgkQUJT6e6HFtqSoMACeJLmArHDWvm5v3ngHh8xII/4i > ShIAn2Oour0zr/4YkBE0CR4ubDiRLlXz > =PbFO > -END PGP SIGNATURE- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: rainbow and pam
Ok; My suggestion would then be for us to test allowing RTPRIO to 99 (the max value), if possible, so we can test its impact. Then it will be possible to test lower priorities to see what would be a reasonable limit. There has also been a question of testing stronger RT kernel patches in future releases. If so, the whole thing will need to be reconsidered then. Our problem at the moment is that the current kernel has taken a step backwards in RT performance, which we are trying to address. Maybe this will not be the case in the future. In any case, thanks for helping us sort this one out, I am actually very pleased that we can discuss the XO's RT performance. In fact, if we tune this right, we will place the OS (and the laptop) in a position of advantage against its competitors in relation to media applications. Victor - Original Message - From: "Michael Stone" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: "Jim Gettys" <[EMAIL PROTECTED]>; Sent: Saturday, August 16, 2008 10:39 PM Subject: Re: rainbow and pam > On Sat, Aug 16, 2008 at 10:15:08PM +0100, victor wrote: >> Aren't these priorities the same ones set in /etc/security/limits.conf? >> Or are they set by other means? > > /etc/security/limits.conf is simply one vehicle (specifically, the one > used by PAM) for getting a uid-0 process (hence a process w/ > CAP_SYS_RESOURCE) like login or su to call setrlimit() before running > some user-supplied code. Rainbow can accomplish this directly. > > Michael > > (I am interested in arguments as to whether Rainbow should be made to > interact with PAM and the 'login'/'session'/'terminal' concept cluster, > but I haven't yet gotten around to detailed investigation.) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: rainbow and pam
Is that documented? I don't see it in man page. I can try it, if I have a code example (says there it does not take a priority value, so is it just a matter of setting the policy?) Victor - Original Message - From: "Benjamin M. Schwartz" <[EMAIL PROTECTED]> To: "Michael Stone" <[EMAIL PROTECTED]> Cc: "victor" <[EMAIL PROTECTED]>; Sent: Saturday, August 16, 2008 10:27 PM Subject: Re: rainbow and pam > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Michael Stone wrote: > | According to "man sched_setscheduler" you want either CAP_SYS_NICE or a > | non-zero RLIMIT_RTPRIO and giving these to you means that you can > | hardlock the machine anytime by busywaiting. > > As noted in a conversation with Michael, there is a potential "third way", > in the form of SCHED_ISO, isochronous scheduling. This scheduler patch > creates a "pseudo-realtime" mode that provides lower latencies without the > potential for hardlocks. > > http://ck.wikia.com/wiki/SchedulingPolicies#SCHED_ISO > > - --Ben > -BEGIN PGP SIGNATURE- > Version: GnuPG v2.0.9 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkinRlsACgkQUJT6e6HFtqTEKwCeOFhU5oxlXnZHH/+GJCD6gsK5 > nyIAn1dozdz/77DzP4fv7EoXOunuzYJe > =jeiR > -END PGP SIGNATURE- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: rainbow and pam
Aren't these priorities the same ones set in /etc/security/limits.conf? Or are they set by other means? Victor - Original Message - From: "Michael Stone" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: "Jim Gettys" <[EMAIL PROTECTED]>; Sent: Saturday, August 16, 2008 8:40 PM Subject: Re: rainbow and pam > According to "man sched_setscheduler" you want either CAP_SYS_NICE or a > non-zero RLIMIT_RTPRIO and giving these to you means that you can > hardlock the machine anytime by busywaiting. Audio performance is > clearly important to us in this release -- probably more important than > stopping random malicious activities from locking the machine -- so that > means that I should probably help you out on the condition that we may > need to revise the details of our arrangements in future releases. > > Is that acceptable? > > If so, I propose simply granting all activities an RLIMIT_RTPRIO rlimit > of some made-up number... say 50? > > Anyone have better ideas? > > (Note that there is a facility for setting per-bundle rlimits that we > could probably adapt, but it's not very well tested...) > > Michael ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: rainbow and pam
Sorry if I was not clear. Here is the code that currently fails
under rainbow:
/* set scheduling policy and priority */
if (priority > 0) {
p.sched_priority = priority;
if (sched_setscheduler(0, SCHED_RR, &p) != 0) {
csound->Message(csound,"csound: cannot set scheduling policy to
SCHED_RR");
}
else csound->Message(csound,"csound: setting scheduling policy to
SCHED_RR\n");
}
else {
/* nice requested */
if (setpriority(PRIO_PROCESS, 0, priority) != 0) {
csound->Message(csound,"csound: cannot set nice level to %d",
priority);
}
}
This works fine on the terminal for user olpc (given the correct
limits.conf).
Thanks
Victor
- Original Message -
From: "Michael Stone" <[EMAIL PROTECTED]>
To: "Jim Gettys" <[EMAIL PROTECTED]>
Cc: "victor" <[EMAIL PROTECTED]>;
Sent: Saturday, August 16, 2008 3:33 AM
Subject: Re: rainbow and pam
> On Fri, Aug 15, 2008 at 09:14:47PM -0400, Jim Gettys wrote:
>>Michael,
>>
>>I detect a disconnect.
>
> The disconnect is that Victor has neither explained what syscalls he
> wants to be able to make nor posted his patch to limits.conf. Until he
> does one of these things, I am unable to help him.
>
> Michael
___
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Re: rainbow and pam
But as it is, if you are playing MIDI or audio through an Activity launched by rainbow, there is no way AFAIK you can renice it. The code I am testing was set to either change scheduler priority or to renice the process. None is possible. Note that what I am proposing here would not affect you, because you will never play background music and compose with TAM TAM at the same time (or not at least now, unless you have two soundcards in the system). So as far as this discussion is concerned, your worries are unfounded. Victor - Original Message - From: "Mikus Grinbergs" <[EMAIL PROTECTED]> To: Sent: Saturday, August 16, 2008 5:51 AM Subject: Re: rainbow and pam >> Proper fix: make the kernel have a per-task inheritable upper >> limit on the real-time priority. Perhaps the existing limit >> (used for niceness) can even do the job. It's this thing: > > I almost always have multiple sessions running on my XO. If one of > those sessions provides me with background music, I don't want it to > "stutter" as I do other things with my XO. For that reason I 'nice' > the task which is feeding the audio hardware (to have priority over > all other tasks). > > So far (on recent Joyrides) this is working the way I want it -- my > audio task has a priority of -12 (that's minus !). I get concerned > when there is talk of "improving" priority handling in the XO. If > something were done that caused my background music to "stutter", I > would not hesitate to "patch" *my* system to regain uninterrupted music. > > > mikus > > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: rainbow and pam
Thanks; You have been copied into this already: http://dev.laptop.org/ticket/7603 I'm just exploring possibilities for getting better RT performance for audio on the XO. I got stuck when I could not test set the scheduler priority from an Activity (but was able to do it from the terminal). Victor - Original Message - From: "Michael Stone" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Saturday, August 16, 2008 12:00 AM Subject: Re: rainbow and pam > On Fri, Aug 15, 2008 at 11:52:59PM +0100, victor wrote: >>I'm trying to get my head round how rainbow works and there is one >>thing I cannot figure out. Why is that the UIDs generated by rainbow >>do not have the same resource access privileges as other UIDs as >>set in limits.conf for pam? If I use a wildcard to match all users, >>the UIDs set by rainbow are not caught by it. > > Probably because rainbow simply calls setgroups(), setgid(), and > setuid() in order to change credentials. What would you like it to be > doing? > > Michael ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: rainbow and pam
Thanks; You have been copied into this already: http://dev.laptop.org/ticket/7603 I'm just exploring possibilities for getting better RT performance for audio on the XO. I got stuck when I could not test set the scheduler priority from an Activity (but was able to do it from the terminal). Victor - Original Message - From: "Michael Stone" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Saturday, August 16, 2008 12:00 AM Subject: Re: rainbow and pam > On Fri, Aug 15, 2008 at 11:52:59PM +0100, victor wrote: >>I'm trying to get my head round how rainbow works and there is one >>thing I cannot figure out. Why is that the UIDs generated by rainbow >>do not have the same resource access privileges as other UIDs as >>set in limits.conf for pam? If I use a wildcard to match all users, >>the UIDs set by rainbow are not caught by it. > > Probably because rainbow simply calls setgroups(), setgid(), and > setuid() in order to change credentials. What would you like it to be > doing? > > Michael ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
rainbow and pam
I'm trying to get my head round how rainbow works and there is one thing I cannot figure out. Why is that the UIDs generated by rainbow do not have the same resource access privileges as other UIDs as set in limits.conf for pam? If I use a wildcard to match all users, the UIDs set by rainbow are not caught by it. Any clues very much appreciated Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: jackd on OLPC?
Thanks; I have added a few extra bits. - Original Message - From: "S Page" <[EMAIL PROTECTED]> To: Cc: "victor" <[EMAIL PROTECTED]> Sent: Thursday, August 14, 2008 10:53 PM Subject: Re: jackd on OLPC? > victor wrote: >> I am mostly in the dark >> when it comes to these things, which is not ideal. > > I wrote http://wiki.laptop.org/go/Sound#Software_overview based on this > thread and my limited understanding. (Leaving out the "could install A, > ought to use B" stuff that clutters the wiki.) > > Edit away. > HTH, > -- > =S Page ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC Security] permissions for setting scheduler policy
yes, I suppose that can be done, but it does look a little messy, and it would be nice to be able to write activities that transparently can do this, rather than as special cases. It does not need to be root. I can set permissions for user olpc and it works (provided that limits.conf is edited correctly). But somehow activities (launched by rainbow?) are UID 10002 which seems not to follow the rules of pam . Victor At 15:43 14/08/2008, Jim Gettys wrote: >A typical solution is, when you are about to start the process, invoke a >different (very small, so it can be audited) process that can set what >you need as root, and then drop the privileges before execing the real >image that does the work. > >But Michael may have something else in mind for Rainbow. > - Jim > > >On Wed, 2008-08-13 at 11:21 +0100, Victor Lazzarini wrote: > > Hello everyone, > > > > I am working on trying to get better RT performance > > off csound. I have added some code to set the > > scheduler policy and priority, but the problem is > > that I can only use it as root. > > > > As user olpc, the scheduler code will not be allowed > > to set the policy and priority. > > > > It'd be ideal if activities using csound could take > > advantage of this code, because it seems to help > > performance. We could set up group permissions > > for that in /etc/security/limits.conf > > > > What are your thoughts (esp. Deepak and Daniel D)? > > > > Dr Victor Lazzarini > > Senior Lecturer > > Music Technology Laboratory, Music Department > > National University of Ireland, Maynooth > > > > ___ > > Devel mailing list > > Devel@lists.laptop.org > > http://lists.laptop.org/listinfo/devel > > ___ > > Security mailing list > > [EMAIL PROTECTED] > > http://lists.laptop.org/listinfo/security >-- >Jim Gettys <[EMAIL PROTECTED]> >One Laptop Per Child Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: jackd on OLPC?
True; there are also jack network clients (netjack etc), which might be worth investigating. Anyway, whichever way, csound is ready for it. Victor - Original Message - From: "Jim Gettys" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: "Daniel Drake" <[EMAIL PROTECTED]>; Sent: Wednesday, August 13, 2008 6:03 PM Subject: Re: jackd on OLPC? > > On Wed, 2008-08-13 at 17:42 +0100, victor wrote: >> Ah. Well, since it is there, then I might as well test it and >> then report my findings. Jack is seen as more specialised/pro >> than pulseaudio by the linux audio guys. > > > Yup. But jackd is local machine only, and we want to be able to do > things on OLPC exploiting network transparency (which pulseaudio is...). > - Jim > >> Regards >> >> Victor >> >> - Original Message - >> From: "Daniel Drake" <[EMAIL PROTECTED]> >> To: "victor" <[EMAIL PROTECTED]> >> Cc: >> Sent: Wednesday, August 13, 2008 5:33 PM >> Subject: Re: jackd on OLPC? >> >> >> > On Wed, 2008-08-13 at 16:54 +0100, victor wrote: >> >> Noting a couple of lines for jackuser group in limits.conf made me >> >> search >> >> around and I found that libjack & jackd are present in the laptop >> >> system. >> > >> > Can't comment on future plans, but I can explain the present: >> > portaudio is pulled in through espeak, which we require. >> > We don't really want or use portaudio, but that's the way it is. >> > >> > In F9, portaudio grew a dependency on jack, so we get that too. In >> > other >> > words, these things are only in our builds unintentionally. >> > >> > Daniel >> > >> > >> > >> ___ >> Devel mailing list >> Devel@lists.laptop.org >> http://lists.laptop.org/listinfo/devel > -- > Jim Gettys <[EMAIL PROTECTED]> > One Laptop Per Child > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: jackd on OLPC?
Ah. Well, since it is there, then I might as well test it and then report my findings. Jack is seen as more specialised/pro than pulseaudio by the linux audio guys. Regards Victor - Original Message - From: "Daniel Drake" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Wednesday, August 13, 2008 5:33 PM Subject: Re: jackd on OLPC? > On Wed, 2008-08-13 at 16:54 +0100, victor wrote: >> Noting a couple of lines for jackuser group in limits.conf made me >> search >> around and I found that libjack & jackd are present in the laptop >> system. > > Can't comment on future plans, but I can explain the present: > portaudio is pulled in through espeak, which we require. > We don't really want or use portaudio, but that's the way it is. > > In F9, portaudio grew a dependency on jack, so we get that too. In other > words, these things are only in our builds unintentionally. > > Daniel > > > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: jackd on OLPC?
Thanks for your response. It would be perhaps a good idea to put together a working group to discuss audio infrastructure matters. ALSA is fine as a backend, but we might want to have a software layer above it for connectivity. That is, if we can afford it. In any case, now that I've spotted Jack there, I will have a go to see how it performs. Regards Victor - Original Message - From: "Benjamin M. Schwartz" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Wednesday, August 13, 2008 5:01 PM Subject: Re: jackd on OLPC? > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > victor wrote: > | Are there plans to use jack as the audio plumbing in the > | XO? What about pulseaudio? > > At this time, there is nothing resembling a plan for audio. I expect that > there will be no change from the status quo (ALSA) for this release. > > You are certainly among the most expert voices on audio issues in the OLPC > community. Feel free to make recommendations; they will not be taken > lightly. > > - --Ben > -BEGIN PGP SIGNATURE- > Version: GnuPG v2.0.9 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkijBWEACgkQUJT6e6HFtqROZgCcDeIVVulzaajnvYtFNTFyhvqr > X+4AnRuTfvyZvyXjRUs81hiEFED293SW > =u4SO > -END PGP SIGNATURE- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: jackd on OLPC?
Also: there is a libportaudio.so.2 there too, why? Who uses it? - Original Message - From: victor To: devel@lists.laptop.org Sent: Wednesday, August 13, 2008 4:54 PM Subject: jackd on OLPC? Noting a couple of lines for jackuser group in limits.conf made me search around and I found that libjack & jackd are present in the laptop system. Is that a fixture? I am asking because we have removed the jack IO module from csound because we thought it was not going to be present. Should I bring it back? Are there plans to use jack as the audio plumbing in the XO? What about pulseaudio? It would be nice if we could be informed of the audio and RT strategy in the OS, or if possible be involved in the decision-making. I am mostly in the dark when it comes to these things, which is not ideal. If there are plans to support jack (or pulseaudio), I could do some tests and add functionality (eg. a patcher). The TamTam team also needs to be informed as they might want to convert Clooper to support jack (or pulseaudio). Regards Victor -- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
jackd on OLPC?
Noting a couple of lines for jackuser group in limits.conf made me search around and I found that libjack & jackd are present in the laptop system. Is that a fixture? I am asking because we have removed the jack IO module from csound because we thought it was not going to be present. Should I bring it back? Are there plans to use jack as the audio plumbing in the XO? What about pulseaudio? It would be nice if we could be informed of the audio and RT strategy in the OS, or if possible be involved in the decision-making. I am mostly in the dark when it comes to these things, which is not ideal. If there are plans to support jack (or pulseaudio), I could do some tests and add functionality (eg. a patcher). The TamTam team also needs to be informed as they might want to convert Clooper to support jack (or pulseaudio). Regards Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Loading the OSS modules on the XO
Just tested here $ modprobe snd-pcm-oss $ cat /dev/dsp > /dev/dsp and I get lovely mic-speaker parrot feedback. I guess it's just about adding this modprobe line to the init scripts VL - Original Message - From: "Jim Gettys" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Deepak Saxena" <[EMAIL PROTECTED]> Cc: Sent: Wednesday, August 13, 2008 3:58 PM Subject: Re: Loading the OSS modules on the XO >I thought there was a library/shim/kernel option that allowed us to > emulate OSS on ALSA? > > In any case, anything not using ALSA at this date really should get > updated to ALSA > - Jim > > > > On Wed, 2008-08-13 at 10:43 -0400, [EMAIL PROTECTED] wrote: >> shivaprasad wrote: >> > Its OK if I need to have root permissions only once right? I can >> change the >> >> yes. >> >> > /etc/modules/ once during installation of the activity and need not >> load the >> > module every time I run the activity. I am new programming on Linux >> and >> > wasnt sure what to change to make the XO load the oss module on >> startup. So >> > my plan is if I know how to make the XO load the oss modules I can >> do >> > this in a script and run the script during installation of the >> activity so >> > that when I launch the activity I would not need root permission.Could >> you >> > please tell me how to change /etc/modules to load oss modules on >> startup? >> >> the file /etc/modules that erik mentioned isn't used on the XO, but >> there's a similar mechanism in place. >> >> create a new file /etc/sysconfig/modules, with a name that ends >> in ".modules", like "oss.modules". that file should be an executable >> shell script which will load the modules you want. see the existing >> "olpc-1.modules" file in that directory as an example, but probably >> all you need is a single "modprobe snd-pcm-oss" command. >> >> this should cause your module to be installed when the XO boots. >> >> paul >> >> > >> > Thanks >> > Shivaprasad >> > >> > On Wed, Aug 13, 2008 at 6:54 PM, Erik Garrison <[EMAIL PROTECTED]> >> wrote: >> > >> > > On Wed, Aug 13, 2008 at 06:16:58PM +0530, shivaprasad javali wrote: >> > > > Hi, >> > > > >> > > >I am porting a application to the XO. It uses the OSS sound >> Api's to >> > > > render sound. I found that the oss modules are not loaded on the >> xo by >> > > > default. I was able to load the oss modules by running modprobe >> > > snd-pcm-oss >> > > > which created the /dev/dsp and other device files required by the >> oss >> > > > modules and was able to run my application on the XO. But the >> problem is >> > > > every time I reboot the XO I will have to run the commands and >> load the >> > > oss >> > > > modules. >> > > > >> > > >Is there any way I can tell the XO to always load the oss >> modules? >> > > Even >> > > > if I have a script to run the commands on launching the >> application these >> > > > commands would require super user privileges which I wont have >> when I >> > > launch >> > > > the application from the activity bar. Any Ideas? >> > > >> > > Without root access, your activity will have difficulty modifying >> > > /etc/modules to enable autoloading the snd-pcm-oss module at boot. >> I am >> > > unsure if there is any way around this issue unless the deployment >> scope >> > > for your activity is a set of machines on which you have root >> access. >> > > >> > > Erik >> > > >> > part 2 text/plain 129 >> > ___ >> > Devel mailing list >> > Devel@lists.laptop.org >> > http://lists.laptop.org/listinfo/devel >> >> =- >> paul fox, [EMAIL PROTECTED] >> ___ >> Devel mailing list >> Devel@lists.laptop.org >> http://lists.laptop.org/listinfo/devel > -- > Jim Gettys <[EMAIL PROTECTED]> > One Laptop Per Child > > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
user 10002
Hi all, could someone explain to me what is user 10002 and why it does not seem to take notice of /etc/security/limits.conf? My test activity UID is 10002 (and not olpc, but I suppose this because of rainbow). Although I have set the limits to allow for scheduler priority, this will not work with the activity, but it will work on the terminal for user olpc. Any clues are very welcome, thanks Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
permissions for setting scheduler policy
Hello everyone, I am working on trying to get better RT performance off csound. I have added some code to set the scheduler policy and priority, but the problem is that I can only use it as root. As user olpc, the scheduler code will not be allowed to set the policy and priority. It'd be ideal if activities using csound could take advantage of this code, because it seems to help performance. We could set up group permissions for that in /etc/security/limits.conf What are your thoughts (esp. Deepak and Daniel D)? Dr Victor Lazzarini Senior Lecturer Music Technology Laboratory, Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
RT performance, joyride-2288
Hello everyone, I can detect a great improvement on RT performance for joyride-2288, less xruns on sugar activities (testing a midi activity). There are still xruns happening (esp. when there is something happening such as a mouse movement etc.) but it is less. In the terminal with --sched I get a solid performance. I think this bit of scheduler code could be moved to the csound library so that it can be used by sugar activities as well. I'll see what I can do. Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
comments on late joyrides re: rt performance
I have been using, for the last weeks joyride-2232 and now I have joyride-2263. On the other XO, I have a much earlier joyride (1***). Comparing the RT audio performance of the two, I must say I am disappointed with how worse it has got. One of the things I have been playing with is a little MIDI file player (one of the test/example activities in devel.laptop.org/activities/csndsugui), which uses a soundfont synthesis engine. On the older system, I can play most files with only the occasional dropout, generally quite solidly. But on the later (2232 and 2263), I get many more dropouts. Every now and then the OS seems to get a break and go out for coffee or something and the playback gets interrupted for a few ms. I wondered about a change in preemption settings in the kernel that comes with the new OS. For some reason, 2263 seems slightly better than 2232, but I have to test more (I only updated it this evening) I will keep testing, but I expect that this will also have an impact on TamTam. I wonder if more 'aggressive' RT preemption patches (Ingo Molnar's ones come to mind) would be something worth considering. I am not sure whether OLPC would entertain the idea, but I would very much like to see the RT performance improved one way or another. Regards Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
kernel preemption
Hi all, a question for the OS people: what is the level of preemption in the olpc supplied kernel? Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why we are about to not bother upkeeping TamTam.
In fact, if I put some symlinks in /usr/share/Activities pointing to the installed TamTam, I get it to load and run. - Original Message - From: jean piche To: Christoph Derndorfer Cc: devel@lists.laptop.org ; [EMAIL PROTECTED] Sent: Tuesday, August 05, 2008 9:16 PM Subject: Why we are about to not bother upkeeping TamTam. TamTamJam v50 TamTamEdit v49 TamTamSynthLab v50 TamTamMin v48 I dont know why we even bother making new bundles with bug fixes that never get included into the builds. I mean the TamTam you are using is like 8 months old... Anyone care? On 08-08-05, at 15:56, Christoph Derndorfer wrote: On Tue, Aug 5, 2008 at 9:47 PM, Jean Piché <[EMAIL PROTECTED]> wrote: g) the oddest issue I ran into is that none of the TamTam activities worked, they all crashed when starting and took Sugar with it, a hardware-reset was needed Has the latest TamTam build been rolled into this joyride? Here's what I got: TamTamJam v48 TamTamEdit v47 TamTamSynthLab v48 TamTamMin v46 Which is also what the latest versions are according to [[Activities/Joyride]] Christoph jp -- Christoph Derndorfer co-editor, olpcnews url: www.olpcnews.com e-mail: [EMAIL PROTECTED] -- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why we are about to not bother upkeeping TamTam.
I think the reason for tam tam not opening in joyride is that it expects its files to be in /usr/share/activities/* and not in /home/olpc/activities/* Perhaps fixed in later versions? Victor - Original Message - From: jean piche To: Christoph Derndorfer Cc: devel@lists.laptop.org ; [EMAIL PROTECTED] Sent: Tuesday, August 05, 2008 9:16 PM Subject: Why we are about to not bother upkeeping TamTam. TamTamJam v50 TamTamEdit v49 TamTamSynthLab v50 TamTamMin v48 I dont know why we even bother making new bundles with bug fixes that never get included into the builds. I mean the TamTam you are using is like 8 months old... Anyone care? On 08-08-05, at 15:56, Christoph Derndorfer wrote: On Tue, Aug 5, 2008 at 9:47 PM, Jean Piché <[EMAIL PROTECTED]> wrote: g) the oddest issue I ran into is that none of the TamTam activities worked, they all crashed when starting and took Sugar with it, a hardware-reset was needed Has the latest TamTam build been rolled into this joyride? Here's what I got: TamTamJam v48 TamTamEdit v47 TamTamSynthLab v48 TamTamMin v46 Which is also what the latest versions are according to [[Activities/Joyride]] Christoph jp -- Christoph Derndorfer co-editor, olpcnews url: www.olpcnews.com e-mail: [EMAIL PROTECTED] -- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
sugar.logger.logging.getLogger()
I used to be able to write to the logs using
self.logger = sugar.logger.logging.getLogger()
self.logger.debug("hey")
But now none of the messages appear in the logs. Why? Where are they
now? How can I write to the logs from my activity?
Thanks
Victor
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Re: activity bar
I know where the logs are. I am not sure which of the logs Marco was referring to. At 15:13 01/08/2008, Bert Freudenberg wrote: >On 01.08.2008, at 16:01, Victor Lazzarini wrote: > > > Not sure which logs. I can see all the installed activities but > > none of my custom ones. > > >Then your custom activity must be malformed. See > >http://wiki.laptop.org/go/Activity_bundles > >(once the wiki finds its marbles again). > >The logs are in ~olpc/.sugar/default/logs > >- Bert - > > >___ >Devel mailing list >Devel@lists.laptop.org >http://lists.laptop.org/listinfo/devel Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: activity bar
Not sure which logs. I can see all the installed activities but none of my custom ones. Victor At 14:51 01/08/2008, Marco Pesenti Gritti wrote: >Victor Lazzarini wrote: >>Now, another bit of info I can't find in Walter's minimalist draft >>for the updated >>Sugar is how access newly created activities, which I have put in the >>~/Activities together with the rest. >> >>The 'list' view only gives me the installed activities, which is no >>use to me. >>Restarting X does not make sugar find the new activities. I was >>trying to look >>into Bert's script to see if there was a trick to make sugar see >>newly installed >>activities, but I saw nothing obvious. >> > >No trick required, it should work. Can you provide logs please? > >Marco Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: activity bar
Now, another bit of info I can't find in Walter's minimalist draft for the updated Sugar is how access newly created activities, which I have put in the ~/Activities together with the rest. The 'list' view only gives me the installed activities, which is no use to me. Restarting X does not make sugar find the new activities. I was trying to look into Bert's script to see if there was a trick to make sugar see newly installed activities, but I saw nothing obvious. Thanks Victor At 13:55 31/07/2008, Christoph Derndorfer wrote: >Victor, > >please refer to Walter's draft for the updated Sugar documentation >for more information on the re-designed home-view: > ><http://sugarlabs.org/go/User:Walter/sandbox/Home>http://sugarlabs.org/go/User:Walter/sandbox/Home > >Hope that helps, >Christoph > >On Thu, Jul 31, 2008 at 2:47 PM, Victor Lazzarini ><<mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED]> wrote: >Hello everyone, > >I have upgraded to the latest joyride and installed the activities >with Bert's script. One question remains: is the activity bar >gone, or is somewhere else now? > > > >Victor Lazzarini >Music Technology Laboratory >Music Department >National University of Ireland, Maynooth > >___ >Devel mailing list ><mailto:Devel@lists.laptop.org>Devel@lists.laptop.org >http://lists.laptop.org/listinfo/devel > > > > >-- >Christoph Derndorfer >Co-Editor, OLPCnews >url: <http://www.olpcnews.com>www.olpcnews.com >e-mail: <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
getting started with mesh networking
Hello everyone, I am trying to get started experimenting with mesh networking, but I can't seem to be able to do the basics. I got two XOs (with different builds, one is the latest joyride). I get them both connected say to Mesh 1. I see that ifconfig reports a IP address on each machine for mesh0, but I can't ping each other. In fact I can ping from one to the other but indirectly: one is connected to ethernet and then it finds a route via the lan and wlan to the wifi-only machine. Do you think the wlan is interfering with the mesh? Also: I am not really using the wlan for general internet because it uses VPN and (unless someone shows me how to do otherwise) I can't use it with the XO (but I am happy with just using ethernet). Any suggestions welcome. Thanks for your earlier replies to my other queries. Dr Victor Lazzarini Senior Lecturer Music Technology Laboratory, Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
activity bar
Hello everyone, I have upgraded to the latest joyride and installed the activities with Bert's script. One question remains: is the activity bar gone, or is somewhere else now? Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
What is the best way
... to connect the XO to a projector? Are there USB vga/etc cards known to work to with the XO? Thanks Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: how to get a screenshot
Thanks everyone, I got the screenshot I needed using method 2. Victor At 16:12 28/07/2008, Bastien wrote: >Hello Victor, > >Victor Lazzarini <[EMAIL PROTECTED]> writes: > > > I need to get a screenshot of an activity and I am wondering what is > > the best way: > > > > 1. using sugar-jhbuild on fedora: the only problem here is that the > > widgets have all wrong sizes (how to fix this?) > >Don't know... > > > 2. using the XO: I have no idea how to print the screen. > >Alt + F1 should do. > >Then you can rename your screenshots from the journal. > >HTH, > >-- >Bastien >_______ >Devel mailing list >Devel@lists.laptop.org >http://lists.laptop.org/listinfo/devel Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
how to get a screenshot
Hello everyone, I need to get a screenshot of an activity and I am wondering what is the best way: 1. using sugar-jhbuild on fedora: the only problem here is that the widgets have all wrong sizes (how to fix this?) 2. using the XO: I have no idea how to print the screen. Thanks! Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Olpc3 vs Joyride
I'd really like it if we get the 'straight' csound package updated, too, as the software will benefit from more official exposure. I hope we can improve things and make the whole process smoother. At least now I don't need to be sponsored anymore, so it should be simpler. Victor - Original Message - From: "C. Scott Ananian" <[EMAIL PROTECTED]> To: "Victor Lazzarini" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; "Dennis Gilmore" <[EMAIL PROTECTED]>; Sent: Monday, June 30, 2008 8:31 PM Subject: Re: Olpc3 vs Joyride > On Mon, Jun 30, 2008 at 12:25 PM, Victor Lazzarini > <[EMAIL PROTECTED]> wrote: >> I find it amazing that instead of offering support, people >> tend to criticize you for taking a thankless task onboard. >> I wish instead of just talking, they went out there and did the job; >> I am happy to pass on the maintenance of olpcsound, csound-olpc >> or whatever name you find more appropriate, to whoever >> is not happy and thinks he/she can make a better job of >> it. > > I'm sorry it appears that way, Victor. We certainly do appreciate you > doing the packaging! > OLPC and Redhat/Fedora still have a bit of a ways to go to properly > integrate their communities, and sometimes we get lingering resentment > in one direction or another (symmetrically: "these OLPC guys, always > going off their own way" and "these Fedora folks, trying to force us > into their shoebox"). We're working on it! Dennis has been a > fantastic resource in integrating the "OLPC way" into the "Fedora > way", and hopefully we can continue to get more folks like him and you > both. > > Thank you again for your hard work! I hope when Dennis gets out from > under the 8.2 release work you two (and the mysteriously other Fedora > csound maintainer) can touch base on how best to merge packaging so we > don't always have to be playing catchup to our upstream. > --scott > > -- > ( http://cscott.net/ ) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Olpc3 vs Joyride
While I would have no problem doing this, it is just worth noting that Csound for olpc (aka olpcsound) is built with different scons options, so making a spec for csound and olpcsound might be tricky. Yes it is a subset, but a special subset. In addition, I am not the maintainer of the csound packages in fedora. There are a number of issues that require attention in order to create an updated csound package (eg. 64bit systems built etc), which are not related to OLPC. Since my time is limited, resolving these would mean the olpc csound package would be delayed. My priority being getting the subset ready meant not diverging to maintain csound on Fedora, which of course can happen in the future. Also, I needed to be sponsored and so I wanted to keep things simple and tidy. I did not know there were people willing to take on the maintenance of csound for Fedora. If I knew I would probably not have troubled myself. I find it amazing that instead of offering support, people tend to criticize you for taking a thankless task onboard. I wish instead of just talking, they went out there and did the job; I am happy to pass on the maintenance of olpcsound, csound-olpc or whatever name you find more appropriate, to whoever is not happy and thinks he/she can make a better job of it. Victor At 16:05 30/06/2008, Jim Gettys wrote: >I think Victor would be very happy to have a single spec file that >covers both the subset and full csound builds > - Jim > > >On Mon, 2008-06-30 at 09:53 -0500, Dennis Gilmore wrote: > > On Monday 30 June 2008, Jim Gettys wrote: > > > Dennis: > > > > > > OLPC csound is an *exact* formal *subset* of full csound-5 built from > > > the same sources as csound-5. > > > > > > It gets rid of tk/tcl dependency we don't want to carry in csound > > > - Jim > > There are much better ways to achieve that goal. than what was > done. but its > > too late now. I'm working on defining some macros in totem > right now so we > > can always take the latest fedora spec, change some 0's to > 1's and build a > > much more minimalistic totem that's suitable for us. What is done is done > > now. > > > > > On Sun, 2008-06-29 at 17:25 -0500, Dennis Gilmore wrote: > > > > On Sunday 29 June 2008, Bert Freudenberg wrote: > > > > > Am 30.06.2008 um 00:05 schrieb Dennis Gilmore: > > > > > > On Sunday 29 June 2008, Bert Freudenberg wrote: > > > > > >> I reanimated my script that shows differences between the latest > > > > > >> joyride and candidate builds: > > > > > >> > > > > > >> http://dev.laptop.org/~bert/olpc3-joyride.html > > > > > >> > > > > > >> ... and in particular added a section to easily see what packages > > > > > >> are in olpc3 and not in joyride, and vice versa. > > > > > >> > > > > > >> There are not only differences in package versions, but also in > > > > > >> which packages are in. I wondered, for example, why csound is > > > > > >> missing from joyride ... > > > > > > > > > > > > a second copy of csound landed in fedora as olpcsound. it is built > > > > > > specifically for olpc and is in joyride. > > > > > > > > > > If it was named csound-olpc that would have been more obvious ... > > > > > > > > > > - Bert - > > > > > > > > Yes, first i heard of it was when i was asked to switch out csound and > > > > csound- python for olpcsound. Had i been asked before hand > i could have > > > > suggested a way that the csound spec could have produced csound > > > > csound-python and csound- olpc. but what is done is done. I > personally > > > > don't like anything being called olpc-foo, I think we should > write code > > > > that is useful outside of OLPC, useful to the whole > world. In which case > > > > the naming is really a poor choice. > > > > > > > > ___ > > > > Devel mailing list > > > > Devel@lists.laptop.org > > > > http://lists.laptop.org/listinfo/devel > > > > > > ___ > > Devel mailing list > > Devel@lists.laptop.org > > http://lists.laptop.org/listinfo/devel >-- >Jim Gettys <[EMAIL PROTECTED]> >One Laptop Per Child Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: A technical assessment of porting "Sugar" to Windows.
> > For sound support, the situation is similar. I believe that a larger > number of basic APIs are used to access sound playback features than > are used to access the camera and microphone, making compatibility > more difficult. At minimum, we would need to use the windows port of > CSound; it is not clear to me how much work on CSoundXO would be > necessary. > While I have no affections for Windows, I must say that at least that end of things should not be a problem. Csound is completely multiplatform, runs on Linux, Windows, OSX (and even Solaris). So whatever OS is used, we can be there. But I would very much prefer Linux (then OSX and Windows is a very far third place). Speaking of this, didn't Steve Jobs offer OSX for free to OLPC at the beginning, but it was not taken because of the lack of FOSS credentials (even though Darwin is FOSS, is it not?). It seems funny that now OLPC considers going Windows... I sincerely hope this does not come to pass... Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: TamTam packaging
Perhaps the multiple apps using the soundcard are using dmix, in which
case, you might want to see if you can get csound connected to it too.
(-odac:dmix i think). However I never bothered with dmix as it is one
awkward piece of software.
insert_score_event(): invalid instrument number or name
This generated by insert_score_event() (musmon.c), in the csound
library:
i = (int) fabs((double) p[1]);
if ((unsigned int) (i - 1) >= (unsigned int) csound->maxinsno ||
csound->instrtxtp[i] == NULL) {
csoundMessage(csound, Str("insert_score_event(): invalid
instrument "
"number or name\n"));
This indicates something amiss with the CSD file, the instrument has not
been
found, 'i' is p-field 1 in the score event and and should be an index to a
valid
instrument name/number.
Not sure why, but could be something in the csd parsing. Examining the csd
tamtam generated might give us a clue.
Victor
- Original Message -
From: "Jani Monoses" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, April 19, 2008 3:10 PM
Subject: Re: TamTam packaging
>> New packages have made into debian testing. You might want to try
>> those. Also remember you need to set the OPCODEDIR (OPCODEDIR64 in
>> your case) so the csound library can find the plugins (plugins in
>> csound include opcode plugins and realtime output modules).
>
> Actually csound works from the command line iff no other app is using
> the sound card.
> Multiple apps can play simultaneously (flash in firefox, mpg123) but
> csound is not among them.
>
> It uses ALSA for rtaudio and gives this.
> *** Cannot open device 'plughw' for audio output: Device or resource busy
>
> So if no other apps use the sound the pippy sound examples work fine,
> but tamtam activities do not work even then, with many lines such as
> this one in the logs.
>
> insert_score_event(): invalid instrument number or name
>
> I've attached a full log of tamtam mini in case someone can help to
> figure out what could be wrong.
>
> Jani
>
>
>
> PortMIDI real time MIDI plugin for Csound
> PortAudio real-time audio module for Csound
> virtual_keyboard real time MIDI plugin for Csound
> 0dBFS level = 32768.0
> Csound version 5.08 (double samples) Apr 16 2008
> libsndfile-1.0.17
> UnifiedCSD:
> /home/jani/Activities/TamTamMini.activity/common/Resources/tamtamorc.csd
> STARTING FILE
> Creating options
> Creating orchestra
> Creating score
> orchname: /tmp/fileu5b7q9.orc
> scorename: /tmp/filey4hDAb.sco
> rtaudio: PortAudio module enabled ... using blocking interface
> rtmidi: PortMIDI module enabled
> orch compiler:
> 1091 lines read
> opcode homeSine a kki
> opcode synthGrain a aa
> opcode ControlMatrice i ii
> opcode SourceMatrice i i
> opcode FxMatrice i i
> opcode controller k ii
> opcode source a ii
> opcode effects a ii
> instr 200
> instr 5600
> instr 5400
> instr 5401
> instr 5201
> instr 5202
> instr 5212
> instr 6000
> instr 5204
> instr 5203
> Token length extended to 256
> instr 5000
> instr 5022
> instr 5023
> instr 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010
> instr 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110
> instr 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020
> instr 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120
> instr 5021
> LABELS list is full...extending to 10
> LABELS list is full...extending to 15
> LABELS list is full...extending to 20
> LABELS list is full...extending to 25
> LABELS list is full...extending to 30
> sorting score ...
> sread: unexpected char ,
> section 1: at position 41
> in line 1110 of file input
> /home/jani/Activities/TamTamMini.activity/common/Resources/tamtamorc.csd
> remainder of line flushed
> ... done
> Csound version 5.08 (double samples) Apr 16 2008
> displays suppressed
> 0dBFS level = 32768.0
> orch now loaded
> audio buffered in 256 sample-frame blocks
> SECTION 1:
> ftable 1:
> ftable 2:
> ftable 4:
> ftable 30:
> ftable 31:
> ftable 32:
> ftable 33:
> ftable 34:
> ftable 35:
> ftable 36:
> ftable 37:
> ftable 38:
> ftable 39:
> ftable 41:
> ftable 42:
> ftable 44:
> ftable 45:
> ftable 5150:
> ftable 6001:
> ftable 6002:
> ftable 6003:
> ftable 6004:
> new alloc for instr 200:
> ALSA lib pcm.c:7075:(snd_pcm_recover) underrun occured
> ALSA lib pcm.c:7075:(snd_pcm_recover) underrun occured
> /usr/lib/python2.5/site-packages/sugar/graphics/window.py:135: GtkWarning:
> gtk_container_remove: assertion `GT
Mermorize -- fixed
I traced the memorize bug and fixed it in games.py. I also optmised the csound code in csoundserver.py. I am not sure who needs to get this code. Could he/she get in touch with me privately?I'll give more details then. Thanks Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: New bible reading activity
Considering all of the people the laptop is aimed at, having an activity labelled as 'bible reading' does not exactly do OLPC any favours. Now, speaking for myself only, I feel there are many more useful texts out there which would be more suitable to be in activity's name. 'The Origin of Species", for one... Victor Lazzarini - Original Message - From: "Morgan Collett" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: Sent: Saturday, March 15, 2008 12:31 PM Subject: Re: New bible reading activity > On Sat, Mar 15, 2008 at 2:01 PM, <[EMAIL PROTECTED]> wrote: >> >> space on the laptops is limited. it's not a good idea to have lots of >> different readers to read different documents (and along the same lines, >> it's not a good idea to have different browser packages with different >> home pages, like the gmail activity) >> >> now if you do something unique with your document there may be a reason >> to >> have a seperate reader (and I have seen bible readers that did have such >> features) > > This is a port of existing software which has a specific format which > enables certain features, such as the ability to jump directly to a > particular book, chapter and verse. There are lots of versions > available in numerous languages in this format, and though this port > is rudimentary it has this feature. > > GnomeSword has features like reading different versions/translations > in parallel, commentaries, dictionaries, maps, etc which all integrate > into the same UI and display relevant info according to the current > chapter and verse reference. I'm sure a good number of these features > will be available in this port, with time. > > I'd consider that enough justification for a dedicated activity. > > Morgan > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: memorize (drumgit game) broken
It appears to me that the Python code is not passing the filename to csound. If I knew in which file that bit of code is, I could look. Also looking at csound code for doing that bit, I think I could simplify it somewhat. There are repeated calls to compile() that seem avoidable (you probably need only one compile at the beginning and then just send realtime events to csound). But let's get it back working. I saw that all the files for the game are zipped in /demo, so I wonder where they get unzipped, if at all, and whether that is the reason for the problem. The images appear, OK, but the ogg filenames do not get passed to csound. (/usr/share/activities...) victor - Original Message - From: "Simon Schampijer" <[EMAIL PROTECTED]> To: "Victor Lazzarini" <[EMAIL PROTECTED]> Cc: "Dr. Richard Boulanger" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, March 14, 2008 8:40 PM Subject: Re: memorize (drumgit game) broken > Victor Lazzarini wrote: >> I've tested memorize now under 5.07 (the old RPM) and >> joyride-1765 (latest?) and I can confirm it does not play >> any sound. Csound fails to find the ogg file (no filename is >> actually passed to it). The log says the opcode failed to >> open the file and I traced it to an empty string being passed >> through a software bus channel. > > Victor, > > I remember playing sound last with memorize on 693 an update.1 build. I do > not have an XO at hand at the moment but I will take a look when I am back > in XO land. > > A quick way of finding out if it is security related is with removing > /etc/olpc-security and restarting sugar. Another hint might be the path of > the bundle - is it in /home/olpc/Activities or /usr/share/activities? > > Best, >Simon ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
memorize (drumgit game) broken
I've tested memorize now under 5.07 (the old RPM) and joyride-1765 (latest?) and I can confirm it does not play any sound. Csound fails to find the ogg file (no filename is actually passed to it). The log says the opcode failed to open the file and I traced it to an empty string being passed through a software bus channel. But I have prepared the 5.08 RPM to run oggplay, so it should work when this is fixed. Thanks everyone Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: who sets SUGAR_ACTIVITY_ROOT?
Not to worry, I can access the path using activity.get_activity_root(), as pointed out by Simon, so I am OK. Thanks At 12:59 14/03/2008, Marco Pesenti Gritti wrote: >On Fri, Mar 14, 2008 at 12:06 PM, Victor Lazzarini ><[EMAIL PROTECTED]> wrote: > > > > I am trying to work out how to access the correct directories > > for writing and I see that SUGAR_ACTIVITY_ROOT is > > supposedly where to look. However is it up to the activity > > to set this variable? I see that the terminal has it set > > correctly and I would have thought that when sugar launches > > an activity it would this variable too. > > > > But os.getenv(SUGAR_ACTIVITY_ROOT) fails. Could someone > > indicate how to retrieve the activity datastore? > >Yeah, rainbow (or sugar if you are running with security off) is >supposed to set the variable. Not sure what is going on in your case. > >Marco Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
lbgnomevfs warning
Hi all, on launching an activity, say a bare one with just the activity toolbox and nothing else, I get these warnings in the log libgnomvfs-WARNING **: unable to create ~/.gnome2 directory ... I realise this must be related to the security model and acitivities cannot write to /home/olpc. But is this a problem? Or should I just ignore it? Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
who sets SUGAR_ACTIVITY_ROOT?
I am trying to work out how to access the correct directories for writing and I see that SUGAR_ACTIVITY_ROOT is supposedly where to look. However is it up to the activity to set this variable? I see that the terminal has it set correctly and I would have thought that when sugar launches an activity it would this variable too. But os.getenv(SUGAR_ACTIVITY_ROOT) fails. Could someone indicate how to retrieve the activity datastore? Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: drawing, structured graphics
goocanvas seems to be what I was looking for. Thanks At 16:13 13/03/2008, Jim Gettys wrote: >Sayamindu, > >I think Victor is asking for something at a higher level of abstraction; >particularly what goes by the name of a canvas in various toolkits. > >I thought we were using goocanvas, or something like that on top of >cairo for TK canvas equivalent functionality... > >Marco? > - Jim > >On Mon, 2008-03-10 at 20:08 +0530, Sayamindu Dasgupta wrote: > > On Mon, Mar 10, 2008 at 7:39 PM, Victor Lazzarini > > <[EMAIL PROTECTED]> wrote: > > > Hi all, > > > > > > what would be the best bet for going about implementing > > > structured graphics a-la Tkinter's canvas class in XO > > > activities? Would it be PyCairo? or PyGTK (gtk/gdk)? > > > > > > > I guess PyCairo would be the best :-) > > > > > > > also could anyone point to a PyGTK custom widget > > > tutorial somewhere? I had a look at one in > > > > http://www.learningpython.com/2006/07/25/writing-a-custom-widget-using-pygtk/ > > > > > > but the code wouldn't work. Are there others? > > > > > > http://pymag.phparch.com/c/issue/view/60 > > > > > > Last time I checked - the code was working. You'll have to register to > > download the issue (it should be a free download). > > > > Thanks, > > Sayamindu > > >-- >Jim Gettys >One Laptop Per Child Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Microsoft? (was Re: OLPC seeks a CEO -- who was your favorite CEO elsewhere?)
More worrying is this bit from the article in the link "OLPC will hand more of the development and support of its XO laptop and its core software to technology companies, (...), and Microsoft (MSFT), which is just now putting the finishing touches on a version of Windows for the XO machine." I didn't know Microsoft and Windows were going to be there. So why all the effort if in the end a closed OS is going to be used? Is this true? Victor - Original Message - From: "John Gilmore" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Tuesday, March 11, 2008 8:47 PM Subject: OLPC seeks a CEO -- who was your favorite CEO elsewhere? > http://www.businessweek.com/technology/content/mar2008/tc2008035_429837.htm > > OLPC is looking for a CEO. Nicholas is more of an "idea man", and he > plans to continue as Chairman and cheerleader. But he appears to have > realized that with its current management, the organization can't > outgrow its early chaos. (For this I give him every credit; most > founders who aren't suited to manage a larger, more structured > organization resist installing a steady hand at the wheel.) > > There are probably a few people on the devel list who are actually > qualified to be CEO of a nonprofit tech company like OLPC. I > encourage them to apply (it's not clear how, which shows you how far > things have degenerated). But I'm more interested in asking the > software developers on the list: > > ==> Who's the best manager or CEO you ever worked for? > > Suggest to that person that they consider the job. > > OLPC has plenty of resources, and also plenty of challenges. We on > the outside have only seen a fraction of them (like schedules sliding > out of control; botched distribution; support handled only by the skin > of the teeth; key people dragged around to fill big holes, leaving > other big holes behind them; diminished expectations in both sales and > technical achievement). OLPC has already changed the world in a small > way, by teaching us that there's a vibrant world market for low cost, > high function portable computers, and reminding us how much leverage > there is in third world educational improvement. OLPC still has a > chance to change the world in a big way, by satisfying that market, > rather than leaving it to commercial companies to half-assedly pick up > the pieces. Steering OLPC back on to the rails before it crashes and > burns will be a job your favorite CEO or manager will never forget. > > Give 'em a call... > > John > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
drawing, structured graphics
Hi all, what would be the best bet for going about implementing structured graphics a-la Tkinter's canvas class in XO activities? Would it be PyCairo? or PyGTK (gtk/gdk)? also could anyone point to a PyGTK custom widget tutorial somewhere? I had a look at one in http://www.learningpython.com/2006/07/25/writing-a-custom-widget-using-pygtk/ but the code wouldn't work. Are there others? Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: OLPC promotes terrorism
Never mind the terrorist thing, what I found difficult to follow was 'the great leap forward' argument, or lack of. It was just picking on one sentence and attaching all possible bad associations to it, which of course has nothing to do with the point. We could just as well pick up from his text "capitalism gives the choice", and say oh, yes the choice not to be able to afford health care, to work for pennies, and if you remember in Dickens' times, the people living in squalor, dying of malnutrition and being sent to the poorhouse. Not very good with his arguments, is he, this Graham chap. Victor - Original Message - From: "Bernardo Innocenti" <[EMAIL PROTECTED]> To: "OLPC Devel" <[EMAIL PROTECTED]> Sent: Thursday, January 24, 2008 5:52 AM Subject: OLPC promotes terrorism > http://erratasec.blogspot.com/2008/01/why-olpc-promotes-terrorism.html > > Didn't you know that Python was a communist language? > > If any chip maker was paying for this bullshit, they'd be > really wasting their money! > > -- > \___/ > |___| Bernardo Innocenti - http://www.codewiz.org/ > \___\ One Laptop Per Child - http://www.laptop.org/ > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why can't i access /dev/dsp or /dev/snd on my XO
It's not a matter of trying to get a non-standard format across. Not all; it is a matter of supporting more possibilities. Besides, as I pointed out, MIDI will play alright on Csound, even if it is a poor way of conveying musical data. But hey, if MIDI looks damn good to you, it is worthless trying to say anything else. Good luck. Victor - Original Message - From: "Albert Cahalan" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]>; Sent: Sunday, January 20, 2008 10:18 AM Subject: Re: Why can't i access /dev/dsp or /dev/snd on my XO > On Jan 20, 2008 3:27 AM, victor <[EMAIL PROTECTED]> wrote: > >> What you say does not make any sense to me. The MIDI >> standard is *one* of many, and in fact the poorest of them >> all. Besides Csound is probably the most used computer music >> language with composers of Computer Music and its >> score an integral part of it. > > I know every developer wants to believe that their own > file format is a standard (and a good one too!), but come > on now. I went looking for stuff that supports csound. > I found **one** program, about 5 wrappers (at least one > of which also supported MIDI), and **zero** hardware. > The situation with MIDI is radically different; there are > a tremendous number of MIDI programs and devices. > > Perhaps it will be more obvious this way: > > Notice that the XO ships with a paint program. Suppose > that the author invented a nifty new image format. Would > it be good to use this format? > > Notice that the XO ships with a word processor. This > word processor could use RTF, OpenDocument, OOXML, > TeX, *roff, XHTML... or a custom format that the authors > just happen to have invented. What do you think, go with > the custom format? > > Notice that the XO lets you record sound. The most > popular unpatented format was used. The authors could > have invented their own sound format and used that though. > See any problems with doing that? > >> But it is not the only way that >> can be used to run it: MIDI, OSC, API event calls, etc., >> are also possible. > > Excellent. You're ready to drop the non-standard stuff. > >> If anything we should promote better standards than limit >> ourselves to a very poor one. > > MIDI looks damn good to me. > > If you really think you have it beat though, go get an RFC and > an ISO standard. Get multiple major hardware manufacturers > to start building your new standard into their hardware. See if > you can get Microsoft and Apple to follow. Then maybe it will > be time to begin the process of slowly saying goodbye to MIDI. > Only then does the format belong on the XO. > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why can't i access /dev/dsp or /dev/snd on my XO
Perhaps you are referring to the language rather than the API, when you say it is ghastly. The API is quite neat. I don't have any problems with the language, but some people don't like it. Perhaps you might be interested in looking at the things I am doing to integrate Csound to Sugar a bit more. If so, drop me a note. Victor - Original Message - From: "M. Edward (Ed) Borasky" <[EMAIL PROTECTED]> To: "Albert Cahalan" <[EMAIL PROTECTED]> Cc: "victor" <[EMAIL PROTECTED]>; Sent: Sunday, January 20, 2008 4:25 AM Subject: Re: Why can't i access /dev/dsp or /dev/snd on my XO > Albert Cahalan wrote: >> On Jan 19, 2008 4:33 PM, victor <[EMAIL PROTECTED]> wrote: >> >>> I can't speak for TamTam because I am not involved in their >>> design details, but I can say this, Csound's standard score >>> preceeds MIDI by at least a decade (or two if you consider where >>> it came from). It is much more flexible to convey musical data >>> than MIDI. There are MIDI to csound score converters, but >>> that is beside the point, because Csound can play MIDI files >>> directly, receive realtime MIDI data and even output it. >>> There is no problem whatsoever, with the proper instruments, >>> Csound will be a MIDI synthesizer like any other. The main >>> thing is, that it is not limited to it (thank goodness...). >> >> How about showing some support for standards by >> dropping the non-standard stuff? You can #ifdef it. >> Maybe you can even save a few bytes. >> >> If you really must, you can embed the non-standard >> stuff into a MIDI file. It's better to avoid non-standard >> stuff entirely of course, and any extended MIDI file >> had better play decently on a standard MIDI player. >> ___ >> Devel mailing list >> Devel@lists.laptop.org >> http://lists.laptop.org/listinfo/devel >> > > One of the main reasons I got an XO was because it has CSound. It's a > ghastly API, but it's been around for years and there are thousands of > working instruments! There's a huge book on it, and I doubt very > seriously if anyone will ever come up with a digital sound analysis and > synthesis tool set as comprehensive without investing a lot of effort > re-inventing a bunch of wheels, levers, inclined planes and such. > > By the way -- I've been meaning to check to see if this is in Trac, but > the csound-manual and csound-tutorial RPMs in the repository appear to > be empty. I can install them, but there isn't anything on the machine > after I do. > > I'm also attempting to get some of the Planet CCRMA software loaded on > the system. At this point, all I really want is Common Music -- I don't > need another synthesizer since I have CSound, and I don't need a music > notation program. If anyone else has already done this, I'd love to hear > about it. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why can't i access /dev/dsp or /dev/snd on my XO
What you say does not make any sense to me. The MIDI standard is *one* of many, and in fact the poorest of them all. Besides Csound is probably the most used computer music language with composers of Computer Music and its score an integral part of it. But it is not the only way that can be used to run it: MIDI, OSC, API event calls, etc., are also possible. If anything we should promote better standards than limit ourselves to a very poor one. Victor - Original Message - From: "Albert Cahalan" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Cc: Sent: Sunday, January 20, 2008 1:29 AM Subject: Re: Why can't i access /dev/dsp or /dev/snd on my XO > On Jan 19, 2008 4:33 PM, victor <[EMAIL PROTECTED]> wrote: > >> I can't speak for TamTam because I am not involved in their >> design details, but I can say this, Csound's standard score >> preceeds MIDI by at least a decade (or two if you consider where >> it came from). It is much more flexible to convey musical data >> than MIDI. There are MIDI to csound score converters, but >> that is beside the point, because Csound can play MIDI files >> directly, receive realtime MIDI data and even output it. >> There is no problem whatsoever, with the proper instruments, >> Csound will be a MIDI synthesizer like any other. The main >> thing is, that it is not limited to it (thank goodness...). > > How about showing some support for standards by > dropping the non-standard stuff? You can #ifdef it. > Maybe you can even save a few bytes. > > If you really must, you can embed the non-standard > stuff into a MIDI file. It's better to avoid non-standard > stuff entirely of course, and any extended MIDI file > had better play decently on a standard MIDI player. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why can't i access /dev/dsp or /dev/snd on my XO
Ah, I thought you were saying there was some problem with Csound's MIDI implementation... (in which case we needed to fix it). No need for that, all's well. Yes, Csound can handle MIDI and it has done it for the most part of fifteen years. I can't speak for TamTam because I am not involved in their design details, but I can say this, Csound's standard score preceeds MIDI by at least a decade (or two if you consider where it came from). It is much more flexible to convey musical data than MIDI. There are MIDI to csound score converters, but that is beside the point, because Csound can play MIDI files directly, receive realtime MIDI data and even output it. There is no problem whatsoever, with the proper instruments, Csound will be a MIDI synthesizer like any other. The main thing is, that it is not limited to it (thank goodness...). (In fact, I am hoping that with the work on a sugar toolkit for Csound apps, things like MIDI players will be put together with minimal effort). If you think that a MIDI file output for TamTam is needed, then you should suggest it to them. So you'll be able to produce these and play them on the XO laptop with Csound! Perhaps we need to get more users from the Csound community involved in the OLPC effort, so that they can educate everyone in the ins and outs of the software. Victor - Original Message - From: "Albert Cahalan" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Sent: Saturday, January 19, 2008 9:00 PM Subject: Re: Why can't i access /dev/dsp or /dev/snd on my XO > On Jan 19, 2008 2:48 PM, victor <[EMAIL PROTECTED]> wrote: >> Hmm, if there are problems with Csound and >> MIDI (of which I am not aware), we need to fix >> them. Can you provide an example? > > I'll start with the user-visible thing which is probably > not entirely Csound's fault. Tam Tam is not using > MIDI for input, output, or saved work. It should be > using MIDI for all three, because MIDI is the standard > for everything from consumer toys to professional > performances. Even the selfish companies like Sony > and Microsoft support MIDI. > > From what I can tell, MIDI is not the native format for > Csound. Musical scores are stored in an incompatible > format. I can't play one with any normal MIDI player. > I can only use Csound to play one. This is bad. > > This isn't even like the *.mp3 or *.doc situation. There > is no legal barrier to being standard. There is no problem > with lack of documentation. Open source MIDI tools > even exist, which does bring into question the need for > having Csound at all. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why can't i access /dev/dsp or /dev/snd on my XO
Hmm, if there are problems with Csound and MIDI (of which I am not aware), we need to fix them. Can you provide an example? Victor - Original Message - From: "Albert Cahalan" <[EMAIL PROTECTED]> To: "victor" <[EMAIL PROTECTED]> Sent: Saturday, January 19, 2008 7:24 PM Subject: Re: Why can't i access /dev/dsp or /dev/snd on my XO > On Jan 19, 2008 3:40 AM, victor <[EMAIL PROTECTED]> wrote: >> Hannu's opinions are just that: opinions. The fact is that Linux >> audio developers have been using alsa much more than OSS. > > Hannu argues his points well. Do not discount him > simply because he created OSS. > > Linux audio developers have not been using ALSA. > They have been using ugly wrapper libraries to deal > with the incompatible mess we've gotten into. Those > libraries support OSS as well. > > There are far more OSS-only programs than ALSA-only > programs. This is partly because writing a native ALSA > program is overcomplicated, and partly because OSS is > portable to *BSD and Solaris. > >> Are you saying that Csound is not appropriate for the XO? > > As a general audio system, yes. Csound may have some > legitimate use on the XO. Shoving normal audio through > Csound is bad. Using Csound to generate synthetic audio > might be OK, though I note that Csound seems to have > some incompatibilities with the MIDI standard. The XO > should be able to function as both MIDI hardware roles, > over both USB and IP. (the XO has one USB port that can > act as a gadget-side device; MIDI has been standardized > over both USB and IP) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Why can't i access /dev/dsp or /dev/snd on my XO
What exactly is the problem with the alsa driver? Csound works OK with it. Replacing it with OSS will require us to write a new IO module for Csound. Without Csound, audio and music on the XO will have to be completely re-written. IMHO, developers wanting to use audio on the XO should ideally use Csound and its Python API. That's why it's there. As far as I am concerned, having developed audio apps for Linux for several years, Alsa is much better and more reliable than OSS. Victor - Original Message - From: "Jordan Crouse" <[EMAIL PROTECTED]> To: "Ivo Emanuel Gonçalves" <[EMAIL PROTECTED]> Cc: "Arjun Sarwal" <[EMAIL PROTECTED]>; Sent: Friday, January 18, 2008 9:02 PM Subject: Re: Why can't i access /dev/dsp or /dev/snd on my XO On 18/01/08 20:57 +, Ivo Emanuel Gonçalves wrote: > As far as I understand this is due to the use of ALSA without OSS > emulation. It's also what affects one of the three Speex bugs > affecting the XO, as the CLI tool speexdec is unable to use /dev/dsp. > > For the sake of improving the state of audio in the XO; I'd really > like to put to vote the idea of replacing ALSA with OSS 4. If thats the case, then we need somebody to volunteer to write the AC97 driver for the CS5536. I don't think we would consider any sort of change until the appropriate hardware controls are in place. Jordan -- Jordan Crouse Systems Software Development Engineer Advanced Micro Devices, Inc. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
set_canvas() type
Hi everyone, what is the type expected by Activity.set_canvas(). Is there a general-purpose canvas widget for structured graphics in sugar (a la Tkinter canvas) ? Where should I be looking for reference documentation? Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
dial widget on sugar
Is there a dial widget in Sugar? I don't think GTK offers one (I never found it), although writing one in C seems easy (but how to include in the XO builds?). In addition, is there a reference for GUI components in Sugar, above and beyond the ones provided by GTK? Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
dial widget on sugar
Is there a dial widget in Sugar? I don't think GTK offers one (I never found it), although writing one in C seems easy (but how to include in the XO builds?). In addition, is there a reference for GUI components in Sugar, above and beyond the ones provided by GTK? Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
project hosting request
1. Project name : csndsugui
2. Existing website, if any :
3. One-line description : a toolkit for the development of custom
csound activities
4. Longer description : csndsugui is a Python-based toolkit for the
development of
: activities based on csound under sugar: lab
demos, instruments
: and music-related applications. It also aims
to provide a simple migration
: path for csound code that uses FLTK widgets.
5. URLs of similar projects :
6. Committer list
Please list the maintainer (lead developer) as the first entry. Only list
developers who need to be given accounts so that they can commit to your
project's code repository, or push their own. There is no need to list
non-committer developers.
Username Full name SSH2 key URLE-mail
- --
#1 Victor
Lazzarini [EMAIL PROTECTED]
#2
#3
...
If any developers don't have their SSH2 keys on the web, please attach
them
to the application e-mail.
7. Preferred development model
[X] Central tree. Every developer can push his changes directly to the
project's git tree. This is the standard model that will be
familiar to
CVS and Subversion users, and that tends to work well for most
projects.
[ ] Maintainer-owned tree. Every developer creates his own git tree, or
multiple git trees. He periodically asks the maintainer to look at one
or more of these trees, and merge changes into the maintainer-owned,
"main" tree. This is the model used by the Linux kernel, and is
well-suited to projects wishing to maintain a tighter control on code
entering the main tree.
If you choose the maintainer-owned tree model, but wish to set up some
shared trees where all of your project's committers can commit directly,
as might be the case with a "discussion" tree, or a tree for an individual
feature, you may send us such a request by e-mail, and we will set up the
tree for you.
8. Set up a project mailing list:
[ ] Yes, named after our project name
[ ] Yes, named __
[X] No
When your project is just getting off the ground, we suggest you eschew
a separate mailing list and instead keep discussion about your project
on the main OLPC development list. This will give you more input and
potentially attract more developers to your project; when the volume of
messages related to your project reaches some critical mass, we can
trivially create a separate mailing list for you.
If you need multiple lists, let us know. We discourage having many
mailing lists for smaller projects, as this tends to
stunt the growth of your project community. You can always add more lists
later.
9. Commit notifications
[ ] Notification of commits to the main tree should be e-mailed to the list
we chose to create above
[ ] A separate mailing list, -git, should be created for
commit
notifications
[X] No commit notifications, please
10. Shell accounts
As a general rule, we don't provide shell accounts to developers unless
there's a demonstrated need. If you have one, please explain here, and
list the usernames of the committers above needing shell access.
11. Translation
[X] Set up the laptop.org Pootle server to allow translation commits to
be made
[ ] Translation arrangements have already been made at ___
12. Notes/comments:
I do not have a username or a SSH2 key
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
Devel mailing list
Devel@lists.laptop.org
http://lists.laptop.org/listinfo/devel
Re: connect to network?
I have found that a USB ethernet card works very well. Victor > > Hi, > >> Another newbie question: is the machine supposed to > be able to >> connect to an "ordinary" wireless network? It finds > my router name >> (and indeed all the other networks alive locally), > and asks for my >> WEP key (and subsequently shows it is on "Canal 11"), > but that is >> as far as I get. ping doesn't work, and the browser > activity cannot >> connect to the internet to find eternal websites. > > Please file a bug; this should work, and we're interested > in chasing it down. Attaching your /var/log/messages file > after an attempt would be most useful. We have problems > with some types of encrypted APs. > >> In the absence of a physical network port, this would > be the only >> way I can copy files to/from the X0. > > You could also use a USB disk, SD card, or USB ethernet > device. > > - Chris. > -- > Chris Ball <[EMAIL PROTECTED]> > ___ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
csndsugui test/example
Dear all, I have started work on a pygtk-sugar GUI framework for csound, for fast development of activities. I have an initial working prototype and I produced a little test/example activity. If anyone is interested in taking a look/testing on his/her XO, I have put up a distribution (.xo) of this little demo at http://music.nuim.ie/vlazzarini/tmp/ It's called Waves (Waves-1.xo). Suggestions/comments are very welcome. Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: retrieving the activity bundle directory
Not in build 602 I presume (as it does not work here). Will upgrade and test (but Dan's solution works fine). Victor At 17:13 11/10/2007, Bert Freudenberg wrote: >On Oct 11, 2007, at 15:59 , Dan Williams wrote: > >>On Thu, 2007-10-11 at 14:29 +0100, Victor Lazzarini wrote: >>>Hi everyone, >>> >>>does anyone know if is there a way to retrieve the >>>activity bundle top directory name under python/sugar? >> >>You should be able to: >> >>from sugar.activity import activity >> >>my_bundle_path = activity.get_bundle_path() > >Also, with the recent launch refactorings the bundle directory is >made the current working directory, so you can simply use relative >path names. > >- Bert - > Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
retrieving the activity bundle directory
Hi everyone, does anyone know if is there a way to retrieve the activity bundle top directory name under python/sugar? Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
stderr/stdout msgs in sugar
Hello everyone, when debugging an activity how does one get stderr/stdout messages from Python in sugar. It is quite hard to debug blindly, not knowing what errors Python is spewing out. Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
olpc password?
Is there a password for user olpc? I set one for it to be able to ssh to the XO, but it seems to have upset the X server and on reboot I could not get the graphics (flashed in and then failed). Thanks Victor ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
where are the activity scripts
Hello everyone, would anyone be able to tell me where the activity python scripts are located in the filesystem? I want to have a look at how a finished activity script looks like (after being setup). Thanks again Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: funny behaviour gtk+python
yes, it's true, but at the moment, I can't
see a substitute for strtod(), and we can't
put a dependency on gtk or Python in the Csound
engine. I can't find an ascii_strtod(). Would
it work if we added a call to setlocale() just
before the call to strtod()?
Victor
>
> This really needs to be fixed properly in CSound. We can't
> have any csound user to have to work it around playing
> with LOCALE... Simon email explain pretty well what is the
> problem.
>
> Marco
>
> On 10/4/07, Jean Piché <[EMAIL PROTECTED]> wrote:
> >
> >
> >
> > Victor,
> >
> > This seriously look slike a bug we had about a month ago
> > in TamTam. I cannot recall the number but hopefully
> someone else can remeber. >
> > It has to do with the LOCALE env variable and the
> > int/float separating character. It was fixed in our
> pythin code but specifying: >
> >
> > locale.setlocale(locale.LC_NUMERIC, 'C')
> >
> >
> >
> >
> > _
> > http://jeanpiche.com
> >
> > On 4-Oct-07, at 9:49 AM, Victor Lazzarini wrote:
> >
> > Yes setting LANG=C at the console solves the problem.
> > Would you care to explain why?
> >
> > Victor
> >
> > At 13:15 04/10/2007, Marco Pesenti Gritti wrote:
> > On 10/4/07, Victor Lazzarini <[EMAIL PROTECTED]>
> > wrote: (OLPC build 602)
> > I have been trying a few things here and I stumbled
> > across a funny problem (this is quite specialised, so
> > I suppose only a few of you would know):
> >
> > 1. With Python, if I do
> >
> > import gtk
> > import csnd
> >
> > cs = csnd.Csound()
> > cs.Compile("myexample.csd")
> >
> > the csound compilation will fail with very unusual
> > syntax errors (which are not syntax errors at all)
> > (eg: "error: numeric syntax "11.1", line ...")
> >
> > 2. If I don't do
> >
> > import gtk
> >
> > Csound will happily compile my code.
> >
> > Now this seems so weird that I can't understand
> > why it is happening.
> >
> > Any clues why "import gtk" is causing this
> > behaviour?
> >
> > Does running it with LANG=C help?
> >
> > Marco
> >
> > Victor Lazzarini
> > Music Technology Laboratory
> > Music Department
> > National University of Ireland, Maynooth
> >
> > ___
> > Devel mailing list
> > Devel@lists.laptop.org
> > http://lists.laptop.org/listinfo/devel
> >
___
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no module json?
I am trying to sugarise a pygtk-based code and in my early trials, stumbled across this problem, trying to build a minimal activity: when doing import sugar.activity.activity I get No module name json What do I need to get to sort this one out? Thanks Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: funny behaviour gtk+python
Yes setting LANG=C at the console solves the problem. Would
you care to explain why?
Victor
At 13:15 04/10/2007, Marco Pesenti Gritti wrote:
>On 10/4/07, Victor Lazzarini <[EMAIL PROTECTED]> wrote:
> > (OLPC build 602)
> > I have been trying a few things here and I stumbled
> > across a funny problem (this is quite specialised, so
> > I suppose only a few of you would know):
> >
> > 1. With Python, if I do
> >
> > import gtk
> > import csnd
> >
> > cs = csnd.Csound()
> > cs.Compile("myexample.csd")
> >
> > the csound compilation will fail with very unusual
> > syntax errors (which are not syntax errors at all)
> > (eg: "error: numeric syntax "11.1", line ...")
> >
> > 2. If I don't do
> >
> > import gtk
> >
> > Csound will happily compile my code.
> >
> > Now this seems so weird that I can't understand
> > why it is happening.
> >
> > Any clues why "import gtk" is causing this
> > behaviour?
>
>Does running it with LANG=C help?
>
>Marco
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
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Re: funny behaviour gtk+python
Just to add a little to say that this particular csound error is
issued when there is an incorrect numeric format, say
11.B or 11.1A. In here, if I only use integers, there is
no error, but all decimals are raising the error. Here's the
Csound code fragment that issues the error:
static int constndx(CSOUND *csound, const char *s)
{
MYFLT newval;
int h, n, prv;
{
volatile MYFLT tmpVal; /* make sure it really gets rounded to
MYFLT */
char*tmp = (char*) s;
tmpVal = (MYFLT) strtod(s, &tmp);
newval = tmpVal;
if (tmp == s || *tmp != (char) 0) {
synterr(csound, Str("numeric syntax '%s'"), s);
return 0;
}
}
(...)
}
Somehow the 'strtod' conversion is getting it wrong.
But why only after 'import gtk', I cannot understand.
Victor
At 13:12 04/10/2007, Victor Lazzarini wrote:
>(OLPC build 602)
>I have been trying a few things here and I stumbled
>across a funny problem (this is quite specialised, so
>I suppose only a few of you would know):
>
>1. With Python, if I do
>
>import gtk
>import csnd
>
>cs = csnd.Csound()
>cs.Compile("myexample.csd")
>
>the csound compilation will fail with very unusual
>syntax errors (which are not syntax errors at all)
>(eg: "error: numeric syntax "11.1", line ...")
>
>2. If I don't do
>
>import gtk
>
>Csound will happily compile my code.
>
>Now this seems so weird that I can't understand
>why it is happening.
>
>Any clues why "import gtk" is causing this
>behaviour?
>
>thanks
>
>Victor
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
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funny behaviour gtk+python
(OLPC build 602)
I have been trying a few things here and I stumbled
across a funny problem (this is quite specialised, so
I suppose only a few of you would know):
1. With Python, if I do
import gtk
import csnd
cs = csnd.Csound()
cs.Compile("myexample.csd")
the csound compilation will fail with very unusual
syntax errors (which are not syntax errors at all)
(eg: "error: numeric syntax "11.1", line ...")
2. If I don't do
import gtk
Csound will happily compile my code.
Now this seems so weird that I can't understand
why it is happening.
Any clues why "import gtk" is causing this
behaviour?
thanks
Victor
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
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reason? (was Re: funny behaviour gtk+python)
would this be the reason?
https://bugs.launchpad.net/pygtk/+bug/27112
import gtk Changing the default encoding? Funny
I am not getting it on my other fedora systems (perhaps
because they are one version behind?).
Victor
At 14:23 04/10/2007, Victor Lazzarini wrote:
>Just to add a little to say that this particular csound error is
>issued when there is an incorrect numeric format, say
>11.B or 11.1A. In here, if I only use integers, there is
>no error, but all decimals are raising the error. Here's the
>Csound code fragment that issues the error:
>
>
>static int constndx(CSOUND *csound, const char *s)
>{
> MYFLT newval;
> int h, n, prv;
>
> {
> volatile MYFLT tmpVal; /* make sure it really gets rounded to
> MYFLT */
> char*tmp = (char*) s;
> tmpVal = (MYFLT) strtod(s, &tmp);
> newval = tmpVal;
> if (tmp == s || *tmp != (char) 0) {
> synterr(csound, Str("numeric syntax '%s'"), s);
> return 0;
> }
> }
>
>(...)
>
>}
>
>Somehow the 'strtod' conversion is getting it wrong.
>
>But why only after 'import gtk', I cannot understand.
>
>Victor
>
>At 13:12 04/10/2007, Victor Lazzarini wrote:
>>(OLPC build 602)
>>I have been trying a few things here and I stumbled
>>across a funny problem (this is quite specialised, so
>>I suppose only a few of you would know):
>>
>>1. With Python, if I do
>>
>>import gtk
>>import csnd
>>
>>cs = csnd.Csound()
>>cs.Compile("myexample.csd")
>>
>>the csound compilation will fail with very unusual
>>syntax errors (which are not syntax errors at all)
>>(eg: "error: numeric syntax "11.1", line ...")
>>
>>2. If I don't do
>>
>>import gtk
>>
>>Csound will happily compile my code.
>>
>>Now this seems so weird that I can't understand
>>why it is happening.
>>
>>Any clues why "import gtk" is causing this
>>behaviour?
>>
>>thanks
>>
>>Victor
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
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Devel@lists.laptop.org
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Re: funny behaviour gtk+python
Just to add a little to say that this particular csound error is
issued when there is an incorrect numeric format, say
11.B or 11.1A. In here, if I only use integers, there is
no error, but all decimals are raising the error. Here's the
Csound code fragment that issues the error:
static int constndx(CSOUND *csound, const char *s)
{
MYFLT newval;
int h, n, prv;
{
volatile MYFLT tmpVal; /* make sure it really gets rounded to
MYFLT */
char*tmp = (char*) s;
tmpVal = (MYFLT) strtod(s, &tmp);
newval = tmpVal;
if (tmp == s || *tmp != (char) 0) {
synterr(csound, Str("numeric syntax '%s'"), s);
return 0;
}
}
(...)
}
Somehow the 'strtod' conversion is getting it wrong.
But why only after 'import gtk', I cannot understand.
Victor
At 13:12 04/10/2007, Victor Lazzarini wrote:
>(OLPC build 602)
>I have been trying a few things here and I stumbled
>across a funny problem (this is quite specialised, so
>I suppose only a few of you would know):
>
>1. With Python, if I do
>
>import gtk
>import csnd
>
>cs = csnd.Csound()
>cs.Compile("myexample.csd")
>
>the csound compilation will fail with very unusual
>syntax errors (which are not syntax errors at all)
>(eg: "error: numeric syntax "11.1", line ...")
>
>2. If I don't do
>
>import gtk
>
>Csound will happily compile my code.
>
>Now this seems so weird that I can't understand
>why it is happening.
>
>Any clues why "import gtk" is causing this
>behaviour?
>
>thanks
>
>Victor
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
Devel mailing list
Devel@lists.laptop.org
http://lists.laptop.org/listinfo/devel
funny behaviour gtk+python
(OLPC build 602)
I have been trying a few things here and I stumbled
across a funny problem (this is quite specialised, so
I suppose only a few of you would know):
1. With Python, if I do
import gtk
import csnd
cs = csnd.Csound()
cs.Compile("myexample.csd")
the csound compilation will fail with very unusual
syntax errors (which are not syntax errors at all)
(eg: "error: numeric syntax "11.1", line ...")
2. If I don't do
import gtk
Csound will happily compile my code.
Now this seems so weird that I can't understand
why it is happening.
Any clues why "import gtk" is causing this
behaviour?
thanks
Victor
Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth
___
Devel mailing list
Devel@lists.laptop.org
http://lists.laptop.org/listinfo/devel
Re: wireless networking
Thanks, I am now seeing my wireless router on the machines and can ping other machines connected to it. Wired internet seems to work (as far as ifconfig and ping are concerned). Two questions: 1. How should I set my hostname and fix it to work with DHCP? 2. How do I add DNS servers? I had a look at the obvious place, /etc/resolv.conf, but there is comment saying that it should not be edited (although the file was empty). and a third one: how do I set http proxies for the browser? That is the only way they allow me out of the lab network. I think yum should work fine through the proxy once I have everything set up correctly with the wired network. Thanks a lot for the assistance. Victor > > On Thu, 2007-09-13 at 14:08 +0100, Victor Lazzarini wrote: > > Hi all, > > > > Got the delivery of two B4 machines and joined the list > > today. I am trying to test the system, so would like to > > get some help. I am starting with networking; I have not > > yet updated to the latest OS image, though. > > > > I got the two machines side by side. Shouldn't they see > > each other in Sugar's neighboorhood? > > > > I opened the terminal and set them to the same essid but > still no sign. > > Yes, iwconfig is incompatible with NetworkManager because > iwconfig changes the parameters underneath NM. You also > need an IP address before the two will talk, and when NM > manages the connection, it'll do that for you > automatically. > > If you connect them both to the same AP using the GUI, or > you remove the saved network config bits in > ~/.sugar/default/nm/networks and just start them up and > wait a while, they will fall back to channel 1 and mesh > with each other. > > Dan > > > Also, should they not see other AdHoc machines around > > them (say other windows, linux, OSX). > > > > Suggestions? > > > > Victor > > Victor Lazzarini > > Music Technology Laboratory > > Music Department > > National University of Ireland, Maynooth > > > > ___ > > Devel mailing list > > Devel@lists.laptop.org > > http://lists.laptop.org/listinfo/devel > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
wireless networking
Hi all, Got the delivery of two B4 machines and joined the list today. I am trying to test the system, so would like to get some help. I am starting with networking; I have not yet updated to the latest OS image, though. I got the two machines side by side. Shouldn't they see each other in Sugar's neighboorhood? I opened the terminal and set them to the same essid but still no sign. Also, should they not see other AdHoc machines around them (say other windows, linux, OSX). Suggestions? Victor Victor Lazzarini Music Technology Laboratory Music Department National University of Ireland, Maynooth ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
