Linux-audio-dev

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7516 discussions

Re: [LAD] [Jack-Devel] more jack/qjackctl madness : some comments

by Ralf Mardorf

Henry Gomersall wrote: > On Tue, 2009-05-19 at 18:26 +0200, Ralf Mardorf wrote: > >> I'm using Linux since years (not rt-audio ;)) and the architecture of >> Linux has one big disadvantage. You might have a Linux that is fine, >> the >> times are changing and in addition you need an absolutely new >> application, but you don't need to update any of the applications >> you're >> using since years. >> >> You can't install the new application, because dependencies needs to >> be >> updated and that causes that also your perfect working applications >> needs to be updated. >> >> > I don't see how this is different to any system (Windows, Mac, Game > Boy). The main difference being that you are actually free, yourself, to > modify the code and keep it working. That is the point about being able > to modify the code yourself. > > Henry > The latest version of the Atari Cubase still can run sessions of the first version, sometimes you can't do this with Rosegarden between two versions (okay, I nearly does NO RT-AUDIO with Linux ;)). But the point isn't what is possible or impossible for other OS's. For Windows and Mac you can get the same open source applications, but not everybody want to work with the source code and set up the application by this way, most people needs a working tool.

16 years, 5 months

Re: [LAD] [PATCH] oss2jack 0.25 for jack2

by James Warden

Following the kfusd patch, here is a small patch to make oss2jack work fine against jack2. It works against jack1 already because jack1's version of jack_set_samplerate_callback() actually executes the callback function, while jack2 does not do it right away. So I followed Stephane Letz's advice and call jack_get_sample_rate() in oss2jack in jack_init() instead. Please be aware that you may get a reject by applying due to screwed spacing. I had some funny issues with this lately (and I use emacs for source code ... weird). ------ PATCH start ------------------ --- oss2jack-0.25.orig/src/oss2jack/oss2jack.c 2009-05-18 19:57:17.757704457 +0200 +++ oss2jack-0.25/src/oss2jack/oss2jack.c 2009-05-18 20:05:04.397724051 +0200 @@ -633,7 +633,7 @@ jack_set_error_function(jack_error); - info->client = jack_client_new("oss-dsp"); + info->client = jack_client_open("oss-dsp", JackNullOption, NULL); if(info->client == NULL) { @@ -652,6 +652,9 @@ jack_set_sample_rate_callback(info->client, jack_srate, info); jack_set_buffer_size_callback(info->client, jack_buffer_size, info); + /* initialize current sample rate for jack2 at startup */ + (void)jack_srate(jack_get_sample_rate(info->client), info); + jack_on_shutdown(info->client, jack_shutdown, info); info->last_frame_size = 64; ------- PATCH end ------------------------------ Cheers! J. > --- On Fri, 5/15/09, Lennart Poettering <mzynq(a)0pointer.de> > wrote: > > > From: Lennart Poettering <mzynq(a)0pointer.de> > > Subject: Re: [LAD] [PATCH] kfusd against 2.6.29 > kernel > > To: linux-audio-dev(a)lists.linuxaudio.org > > Date: Friday, May 15, 2009, 8:29 AM > > On Fri, 15.05.09 05:21, James Warden > > (warjamy(a)yahoo.com) > > wrote: > > > > > Hi, > > > > > > I created a patch for kfusd (fusd-kor kernel > module) > > because I > > > needed oss2jack to work again against kernel > 2.6.29.x > > > > > > I need to clean up the patch as it bulldozes the > old > > kernel API. If > > > anyone is interested, I can post it here when I > clean > > it up (some > > > time tonight or tomorrow). I already contacted > the > > author of fusd > > > but I've got no reply so far. > > > > > > Note that I am no kernel guru, I got inspired by > the > > update to > > > module source drm_mm.c and tested oss2jack in a > > 2.6.29.2-rt10 > > > environment against jack1_svn (latest). I need to > fix > > something to > > > make it work with jack2 (some problem linked to > > libsamplerate - > > > which is used in oss2jack - specifically in > > src_process, the > > > src_ratio field of the passed data is out of > range). > > > > Please note that cuse (which does mostly the same as > fusd) > > is on its > > way into the kernel: > > > > http://lwn.net/Articles/296388/ > > > > Lennart > > > > -- > > Lennart Poettering > > Red Hat, Inc. > > lennart [at] poettering [dot] net > > http://0pointer.net/lennart/ > > GnuPG 0x1A015CC4 > > _______________________________________________ > > Linux-audio-dev mailing list > > Linux-audio-dev(a)lists.linuxaudio.org > > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev > > > > > >

16 years, 5 months

Re: [LAD] [PATCH] kfusd against 2.6.29 kernel

by James Warden

I completely forgot to post the kfusd patch. I understand cuse will supersede all this but some ppl out there may want to use kfusd in the mean time against kernel 2.6.29.x I warn you, there may be cleaner way to do this but it works. Some changes might be due to some spacing or tabbing. Sorry about that. Note that I have no clue when the kernel API changed after 2.6.24. So I you try it against say 2.6.27 or 2.6.28, it may not work at all. Here it is: Here it is: ------- PATCH start ---------------------------------- diff -Naur fusd-kor/include/kfusd.h fusd-kor-new/include/kfusd.h --- fusd-kor/include/kfusd.h 2007-06-26 02:01:36.000000000 +0200 +++ fusd-kor-new/include/kfusd.h 2009-05-19 07:40:27.549694054 +0200 @@ -44,6 +44,7 @@ #define __KFUSD_H__ #include "fusd_msg.h" +#include <linux/version.h> /* magic numbers for structure checking; unique w.r.t * /usr/src/linux/Documentation/magic-number.txt */ @@ -125,7 +126,11 @@ char *dev_name; struct CLASS *clazz; int owns_class; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) struct class_device *class_device; +#else + struct device *class_device; +#endif void *private_data; /* User's private data */ struct cdev* handle; diff -Naur fusd-kor/kfusd/kfusd.c fusd-kor-new/kfusd/kfusd.c --- fusd-kor/kfusd/kfusd.c 2008-01-31 22:38:53.000000000 +0100 +++ fusd-kor-new/kfusd/kfusd.c 2009-05-19 07:40:36.412703934 +0200 @@ -85,7 +85,7 @@ #define STATIC /* Define this if you want to emit debug messages (adds ~8K) */ -#define CONFIG_FUSD_DEBUG +/* #define CONFIG_FUSD_DEBUG */ /* Default debug level for FUSD messages. Has no effect unless * CONFIG_FUSD_DEBUG is defined. */ @@ -126,8 +126,17 @@ #else +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) + #define CLASS_DEVICE_CREATE(a, b, c, d, e) class_device_create(a, b, c, d, e) +#else + +#define CLASS_DEVICE_CREATE(a, b, c, d, e) device_create(a, b, c, d, e) +#define class_device_destroy(a, b) device_destroy(a, b) + +#endif + #endif #endif @@ -150,8 +159,13 @@ static struct CLASS *fusd_class; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) static struct class_device *fusd_control_class_device; static struct class_device *fusd_status_class_device; +#else +static struct device *fusd_control_class_device; +static struct device *fusd_status_class_device; +#endif extern struct CLASS *sound_class; @@ -725,8 +739,10 @@ /* fill the rest of the structure */ fusd_msg->parm.fops_msg.pid = current->pid; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) fusd_msg->parm.fops_msg.uid = current->uid; fusd_msg->parm.fops_msg.gid = current->gid; +#endif fusd_msg->parm.fops_msg.flags = fusd_file->file->f_flags; fusd_msg->parm.fops_msg.offset = fusd_file->file->f_pos; fusd_msg->parm.fops_msg.device_info = fusd_dev->private_data; @@ -1533,6 +1549,7 @@ } static void fusd_client_mm_open(struct vm_area_struct * vma); static void fusd_client_mm_close(struct vm_area_struct * vma); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) static struct page* fusd_client_nopage(struct vm_area_struct* vma, unsigned long address, int* type); static struct vm_operations_struct fusd_remap_vm_ops = { @@ -1540,6 +1557,16 @@ close: fusd_client_mm_close, nopage: fusd_client_nopage, }; +#else +static int fusd_client_fault(struct vm_area_struct* vma, struct vm_fault *vmf, int* type); +static struct vm_operations_struct fusd_remap_vm_ops = +{ + .fault = fusd_client_fault, + .open = fusd_client_mm_open, + .close = fusd_client_mm_close, +}; +#endif + struct fusd_mmap_instance { @@ -1631,13 +1658,14 @@ return -EPIPE; } +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) static struct page* fusd_client_nopage(struct vm_area_struct* vma, unsigned long address, int* type) { struct fusd_mmap_instance* mmap_instance = (struct fusd_mmap_instance*) vma->vm_private_data; unsigned long offset; - struct page *page = NOPAGE_SIGBUS; int result; + struct page *page = NOPAGE_SIGBUS; offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT); // todo: worry about size if(offset > mmap_instance->size) @@ -1662,9 +1690,46 @@ } out: return page; +} +#else +static int fusd_client_fault(struct vm_area_struct* vma, struct vm_fault *vmf, + int* type) +{ + struct fusd_mmap_instance* mmap_instance = (struct fusd_mmap_instance*) vma->vm_private_data; + unsigned long offset; + int result; + struct page *page = NULL; + offset = ((unsigned long)vmf->virtual_address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT); + // todo: worry about size + if(offset > mmap_instance->size) + goto out; + + down_read(&mmap_instance->fusd_dev->task->mm->mmap_sem); + result = get_user_pages(mmap_instance->fusd_dev->task, mmap_instance->fusd_dev->task->mm, mmap_instance->addr + offset, 1, 1, 0, &page, NULL); + up_read(&mmap_instance->fusd_dev->task->mm->mmap_sem); + + + if(PageAnon(page)) + { + RDEBUG(2, "Cannot mmap anonymous pages. Be sure to allocate your shared buffer with MAP_SHARED | MAP_ANONYMOUS"); + return VM_FAULT_SIGBUS; + } + + if(result > 0) + { + get_page(page); + vmf->page = page; + if (type) + *type = VM_FAULT_MINOR; + } +out: + return 0; } +#endif + + /* ----- PATCH end ---------------------------------- Cheers! J. > --- On Fri, 5/15/09, Lennart Poettering <mzynq(a)0pointer.de> > wrote: > > > From: Lennart Poettering <mzynq(a)0pointer.de> > > Subject: Re: [LAD] [PATCH] kfusd against 2.6.29 > kernel > > To: linux-audio-dev(a)lists.linuxaudio.org > > Date: Friday, May 15, 2009, 8:29 AM > > On Fri, 15.05.09 05:21, James Warden > > (warjamy(a)yahoo.com) > > wrote: > > > > > Hi, > > > > > > I created a patch for kfusd (fusd-kor kernel > module) > > because I > > > needed oss2jack to work again against kernel > 2.6.29.x > > > > > > I need to clean up the patch as it bulldozes the > old > > kernel API. If > > > anyone is interested, I can post it here when I > clean > > it up (some > > > time tonight or tomorrow). I already contacted > the > > author of fusd > > > but I've got no reply so far. > > > > > > Note that I am no kernel guru, I got inspired by > the > > update to > > > module source drm_mm.c and tested oss2jack in a > > 2.6.29.2-rt10 > > > environment against jack1_svn (latest). I need to > fix > > something to > > > make it work with jack2 (some problem linked to > > libsamplerate - > > > which is used in oss2jack - specifically in > > src_process, the > > > src_ratio field of the passed data is out of > range). > > > > Please note that cuse (which does mostly the same as > fusd) > > is on its > > way into the kernel: > > > > http://lwn.net/Articles/296388/ > > > > Lennart > > > > -- > > Lennart Poettering > > Red Hat, Inc. > > lennart [at] poettering [dot] net > > http://0pointer.net/lennart/ > > GnuPG 0x1A015CC4 > > _______________________________________________ > > Linux-audio-dev mailing list > > Linux-audio-dev(a)lists.linuxaudio.org > > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev > > > > > >

16 years, 5 months

jackd/jackdbus : D-Bus or not D-Bus...

by Stéphane Letz

Hi All, After hours of discussion on #jack IRC, it seems that we are in a completely blocked situation: 1) we currently have 2 "incarnations" of the jack server named "jackd" and "jackdbus". "jackd" is the legacy "classic" version of the server that interact with the ~/jackdrc setting file. This setting file may be written by Qjackctl or Ardour. "jackdbus" is the new D-Bus aware version of the server, it use a completely new setting management system using a "conf.xml" file. Il may use a multi-setting system in the future. 2) the *heart" of the problem Fons initially told about is in the way applications "auto-start" the server. This launching strategy is part of libjack and depends of the incarnation of the server (jackd of jackdbus) that is supposed to be used. Right now this strategy is chosen at *compile time*, so that in "classic" mode the "jackd" server will be launched using a fork-exec strategy, or in D-Bus mode the "jackdbus" server will be launched by issuing a D-Bus call. 3) Since the "auto-start" strategy is chosen at compile time and thus is coded in libjack, users will typically encounter all sort of problems as soon as the used applications interact with a "D-Bus based strategy" libjack (that will launch "jackdbus" incarnation) and users still use Qjackctl that interact with the "jackd" incarnation. 4) Different ideas have been proposed to merge the 2 "jackd" and "jackdbus" incarnations in a unique extended "jackd" exe, but nothing really clear emerged. 4) A possible proposed solution was to define 2 completely separated packages for jack2 : the "classic" one would package the "jackd" incarnation and allow Qjackctl and legacy control applications to be used with it. The "D-Bus" one would package the "jackdbus" incarnation, and provide D-Bus bas control applications (patchage, ladi tools....). The problem of this strategy is that..., it is a kind of complete failure regarding the way jack is supposed to be distributed. It may even get worse if a new "jackosc" incarnation (a one that would allow to control the server using OSC) appears a some point in the future... 5) Another idea would be improve the "choice of auto-start strategy" by providing a runtime choice for that: a way for the user to select between the "classic", "D-Bus", "OSC", strategy once globally for a given working session... 5) Another idea would be be to completely drops the "auto-start" strategy...This way we don't have multiple strategy anymore, and solve most of the problems... but loose a feature. Comments? Stephane

16 years, 5 months

Re: [LAD] [Jack-Devel] jackd/jackdbus : D-Bus or not D-Bus...

by Nedko Arnaudov

Felipe Sateler <fsateler(a)gmail.com> writes: > Stéphane Letz wrote: > >> My feeling is that is we choose the runtime auto-start strategy, then >> we should not mix anything concerting setting management > > This sounds weird to me. There should be only one canonical configuration > file for jack, independent of how it was started. What canonical means? Something achieved through massacre? Or something achieved through evolution? -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

16 years, 5 months

Re: [LAD] [Jack-Devel] What are we talking about. (Was: KILL DBUS)

by Stéphane Letz

Le 18 mai 09 à 16:35, Paul Davis a écrit : > On Mon, May 18, 2009 at 10:25 AM, MarcO'Chapeau <marco(a)marcochapeau.org > > wrote: >> On Mon, 18 May 2009 17:36:11 +0400, alex stone >> <compose59(a)gmail.com> wrote: >>> Marc, >>> hehe, and the waltz continues. So let's assume that pulse isn't >>> being >>> considered here as part of the dbus paradigm intent . >> >> Hi again. >> >> Ok, let's stop dancing then :) Let me try to explain that dbus here >> is not >> the center of what has changed in JACK2. > > i'm just going to trying to summarize even more from what Marc has > said. There are two issues that have become tangled up in this recent > email flurry. > > 1) the current D-Bus support can be mishandled by packagers and this > can lead to problems for some users > 2) the only actual implementation that uses the control API is based > on D-Bus, and this is not a source of happiness and cake for everyone. > > There is nothing stopping other implementations (pure C, OSC, python > etc) using the control API, but at this time, nothing else does. > Stephane has attempted to correct problem (1) in svn with warnings > etc. to packagers. > > --p Some more words about that: JACK2 SVN makes now clear what can be built: - "classic" JACK : this target compiles the "jackd" executable. This exe behaves exactly as JACK1 is behaving (beside possible bugs). This target is the *default* one (that is the one resulting from "./waf configure). This version is meant to be used with usual tools Qjackctl, Ardour... (to start the server)... and so on. - D-Bus JACK: this target compiles the "jackdbus" executable *only* (that is the "jackd" is not compiled anymore). This target is obtained using --dbus at configure time. This version is meant to be controled with D-Bus based control applications (Nedko please clarify this point...) - both targets can be mixed but a WARNING is issued at configure time; that is "./waf configure --dbus --classic" will compile both "jackd" and "jackdbus" executable. This is to be done only by people who know exactly what they are doing. Packagers are then strongly recommended to prepare the "classic" or the "D-Bus" JACK2. Dependancies have to be handled accordingly (Nedko please clarify this point...) The "mixed" target should *not be used* for packaging. (see http://trac.jackaudio.org/wiki/JackDbusPackaging) Stephane

16 years, 5 months

jack_ringbuffer or port_buffer ?

by hermann meyer

Hi all I have a question about the useage from the jack_ringbuffer for midi out_put. I'am unsure to use it or not ? Can someone tell me what is the advance when I use it, in relation to write direct to the port_buffer ? In witch case do you prefer the ringbuffer, in witch case do you prefer the direct use of the port_buffer ? Witch one is the one with lesser useage from CPU and mem ? I try to figure that out, but I didn`t come to a clear result witch one is the one to use. regards hermann

16 years, 5 months

FFADO 2.0 Release Candidate 2 (1.999.42) available

by Pieter Palmers

Dear, The FFADO team is happy to announce the release of the second release candidate for FFADO 2.0. It has been 6 months since we released FFADO 2.0 Release Candidate 1, and we have to admit that this is quite long. The usage statistics show that about 300 people have been using RC1 in this period, and the good news is that we did not get a lot of bug reports. Most of the reports filed were related to crappy host controller hardware (most notably the Ricoh controllers), which is something we unfortunately cannot fix. In the mean time the remaining bug reports have been fixed, so here we are again. This release candidate contains a few reliability improvements and bugfixes that should get some field testing before we can release the official 2.0. I would therefore like to ask all users and packagers to upgrade as soon as possible such that we can release sooner rather than later. If we get to about 100 registered users without significant significant bug reports I feel confident that we're good to go. So happy testing! To indicate that we're quite busy even though we don't put out a lot of announcements let me give you a sneak preview of what is under development for post-2.0 ... First of all 2.1 will contain support for extra devices: * The first device to take full advantage of our DICE platform support will be the Focusrite Saffire PRO40. The platform based audio and MIDI streaming is fully functional. The custom mixer functionality is currently being alpha-tested. * The DICE platform support also enables the basic use of the TC Electronic Konnekt 8, 24D and Live. Support for these devices is limited to streaming (no DSP effects). Currently it doesn't look like the DSP is going to be supported any time soon. * Support for the Behringer FCA-202 has been added. * Support for the Stanton SCS.1 series is added. Support for both the audio I/O as the HSS1394 control surface protocol has been implemented, meaning that these devices are fully functional. We keep on talking to several device vendors to increase our device support, and we will most likely be announcing some new devices in the near future. The second major development is the move of the streaming infrastructure to kernel space. Thanks to the Google Summer of Code and the Linux Foundation, we have somebody working on this during the summer. A kernel-space implementation will bring significant improvements with respect to reliability and efficiency. Furthermore it will expose an ALSA interface, meaning that the scope of FireWire audio is extended significantly. The following changes have been made: * Various packaging improvements and cosmetic fixes. * Improved the Edirol FA101 mixer * While the streaming engine is running, prevent mixer changes that result in aborted streaming * Add status bar logging to the mixer window * Install a service-file if possible * Add command rate control for the Saffire devices to reduce the issues with mixer actions messing up audio. * Fix Terratec Phase88 mixer * Implement mixer support for the MOTU UltraLite * Improve mixer support for the MOTU 896HD * Add a minimum for the packetsize parameter for very low channel-count devices * Fix handling of MIDI 2x and 3x mode * Improve the jitter performance of the timestamping * Reduce CPU usage * Fix the bug that prevented jackd from exiting freewheeling mode * Introduce transmit prebuffering to increase reliability with small period sizes * MOTU: Fix bug related to disabled (unused) audio channels * Introduce support for driver parameters in the config file * Ensure that the order specified in the specification string when aggregating devices is honored. * Ensure that libffado.so is properly versioned (SONAME) and installed * Add a firmware version check for ECHO Fireworks based devices * Add a firmware version check for Terratec Phase88 devices * By default the library is compiled with debugging turned off More information can be found here: http://www.ffado.org/?q=node/1031 For the eager, a direct download link: http://www.ffado.org/files/libffado-2.0-rc2.tar.gz On behalf of the FFADO team, Pieter Palmers

16 years, 5 months

Re: [LAD] [PATCH] kfusd against 2.6.29 kernel

by James Warden

cool :) Is it already in the kernel code baseline ? J. --- On Fri, 5/15/09, Lennart Poettering <mzynq(a)0pointer.de> wrote: > From: Lennart Poettering <mzynq(a)0pointer.de> > Subject: Re: [LAD] [PATCH] kfusd against 2.6.29 kernel > To: linux-audio-dev(a)lists.linuxaudio.org > Date: Friday, May 15, 2009, 8:29 AM > On Fri, 15.05.09 05:21, James Warden > (warjamy(a)yahoo.com) > wrote: > > > Hi, > > > > I created a patch for kfusd (fusd-kor kernel module) > because I > > needed oss2jack to work again against kernel 2.6.29.x > > > > I need to clean up the patch as it bulldozes the old > kernel API. If > > anyone is interested, I can post it here when I clean > it up (some > > time tonight or tomorrow). I already contacted the > author of fusd > > but I've got no reply so far. > > > > Note that I am no kernel guru, I got inspired by the > update to > > module source drm_mm.c and tested oss2jack in a > 2.6.29.2-rt10 > > environment against jack1_svn (latest). I need to fix > something to > > make it work with jack2 (some problem linked to > libsamplerate - > > which is used in oss2jack - specifically in > src_process, the > > src_ratio field of the passed data is out of range). > > Please note that cuse (which does mostly the same as fusd) > is on its > way into the kernel: > > http://lwn.net/Articles/296388/ > > Lennart > > -- > Lennart Poettering > Red Hat, Inc. > lennart [at] poettering [dot] net > http://0pointer.net/lennart/ > GnuPG 0x1A015CC4 > _______________________________________________ > Linux-audio-dev mailing list > Linux-audio-dev(a)lists.linuxaudio.org > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev >

16 years, 5 months

[PATCH] kfusd against 2.6.29 kernel

by James Warden

Hi, I created a patch for kfusd (fusd-kor kernel module) because I needed oss2jack to work again against kernel 2.6.29.x I need to clean up the patch as it bulldozes the old kernel API. If anyone is interested, I can post it here when I clean it up (some time tonight or tomorrow). I already contacted the author of fusd but I've got no reply so far. Note that I am no kernel guru, I got inspired by the update to module source drm_mm.c and tested oss2jack in a 2.6.29.2-rt10 environment against jack1_svn (latest). I need to fix something to make it work with jack2 (some problem linked to libsamplerate - which is used in oss2jack - specifically in src_process, the src_ratio field of the passed data is out of range). Cheers! J.

16 years, 5 months

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Linux-audio-dev