[LAD] GSequencer enters a second time the MIDI awards

[Joël Krähemann]

Hi all,

Please check and vote for your favorite sequencer:

https://www.midi.org/component/zoo/item/advanced-gtk-sequencer-2?Itemid=1423

cheers, Joël

http://gsequencer.org
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[LAD] Advanced Gtk+ Sequencer v0.7.88 audio export

[Joël Krähemann]

Hi

Just want to share lost prototype 2nd stage

https://youtu.be/vrdH11jxetc

http://nongnu.org/gsequencer

Cheers,
Joël
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Re: [LAD] Ableton Link GPL...

[Joël Krähemann]

Hi

GSequencer is pure C may be doing a C interface to communicate with such
applications or devices.

cheers,
Joël


On Thu, Sep 15, 2016 at 5:14 PM, Paul Davis 
wrote:

> It will definitely be on a list for Ardour somewhere. Right now my
> Ableton-related activities with Ardour relate to fairly deep support of
> their Push 2 surface rather than Link. It would certainly be nice to see
> Link support, but not sure what the priority will be. I have another
> entirely new branch that is developing Live-like "clip launch" facilities
> for Ardour, and it is likely that Link support would want to piggy back on
> some of the concepts being developed there (notably beat/bar
> synchronization).
>
> On Thu, Sep 15, 2016 at 5:58 AM, Daniel Swärd  wrote:
>
>> Hi.
>>
>> Now that Ableton Link has been publically released as GPL, does anyone
>> have any ideas/plans to integrate it into your projects?
>>
>> http://ableton.github.io/link/
>>
>> /Daniel
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[LAD] Advanced Gtk+ Sequencer v0.7.54 - minor version increases soon

[Joël Krähemann]

Hi all

I'd like to get some feedback on GSequencer v0.7.54. Many things have
changed so far. Good real-time is still a pain especially as doing
much GUI interaction. How-ever I have coded a strategy to counter the
issue.

Here are some new features listed that should work:

* automation editor to automate ports, currently only LADSPA, DSSI and Lv2
* Configuration in place of device, pcm-channels, samplerate, buffer
size and format
* Virtual MIDI mapping to route from GSequencer to DSSI and Lv2
* Notation editor to edit notes of DSSI and Lv2 plugins

Things I'm not sure if still works:

* auto-scroll of notation editor on playback
* export to WAV files with different samplerate and format

All existing features for sure:

* sequencer editors with copy and later for paste in notation editor
* reallocate audio channels and pads
* destroy machines
* link lines

Believed to be broken:

* different threading models than super-thread with channel scope are
believed to be broken

Currently unmaintained:

* Original file format temporally replaced by a light-weight one

Note: having 128 channels on DSSI or Lv2 synths is a bit over-helming.
So you might want to adjust the channels and do MIDI mapping.

Cheers,
Joël Krähemann
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[LAD] DSSI, OSC and Ladspa UUID vs MIDI channel

[Joël Krähemann]

Hi all

Could someone explain me why the MIDI channel is used to identify DSSI
instances?
You could use the URL instead.

Bests,
Joël
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[LAD] Advanced Gtk+ Sequencer v0.7.20

[Joël Krähemann]

Hi all

libags_audio-1.0 is here and is provided by GSequencer v0.7.20.

http://gsequencer.org/gsequencer/announcements/2016/05/26/libags-1_0.html

cheers,
Joël Krähemann
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[LAD] Advanced Gtk+ Sequencer v0.7.0 stable

[Joël Krähemann]

Hi all

GSequencer version 0.7.10 got released as stable. Plugin support has
been extended from LADSPA to DSSI and LV2. Although it's not yet
perfect some of those plugins can be used for now. It needs further
investigation why certain plugins don't work.

For now values from GUI get converted to appropriate scale.
Rudimentary MIDI input exists as well but it wasn't tested, yet. For
sequencers and instruments there exists a connection editor supporting
JACK and ALSA backend.

Theoritcally you should be able to output to JACK using GSequencer.
But JACK support needs some fixes because you can't link jackserver
and jack both in the same application.

http://gsequencer.org

bests,
Joël
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[LAD] GSequencer v0.7.3

[Joël Krähemann]

hi all linux audio devs

Advanced Gtk+ Sequencer libraries go to version 0.7.3.

http://gsequencer.org/download.html

Although the API is still unstable you might get insights, yet.

http://gsequencer.org/api/ags/index.html

* rudimentary JACK support
* refactored AgsTurtle to interface with RDF triples
* some API enhancements

Bests,
Joël
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Re: [LAD] libsndfile 1.0.26 release

[Joël Krähemann]

Hi Erik,

Thank you very much for the release.

cheers,
Joël


On Mon, Nov 23, 2015 at 11:48 AM, Erik de Castro Lopo
 wrote:
> Hi all,
>
> After an embarrasingly long time between releases, I am pleased to
> announce the release of libsndfile 1.0.26.
>
> Main things of note are:
>
>   * Fix for CVE-2014-9496, SD2 buffer read overflow.
>   * Fix for CVE-2014-9756, file_io.c divide by zero.
>   * Fix for CVE-2015-7805, AIFF heap write overflow.
>   * Add support for ALAC encoder in a CAF container.
>   * Add support for Cart chunks in WAV files.
>   * Minor bug fixes and improvements.
>
> Its available here:
>
> http://www.mega-nerd.com/libsndfile/#Download
>
> Cheers,
> Erik
> --
> --
> Erik de Castro Lopo
> http://www.mega-nerd.com/
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[LAD] unstable GSequencer 0.7.1 API

[Joël Krähemann]

Hi all

The new GSequencer API in its version 0.7.1 is available for now at:

http://gsequencer.org/api/ags/

Thought many things still need to implemented, here's a brief list of
what I intend to achieve:

* DSSI support
* LV2 support
* JACK midi input and audio output
* Automation editor
* Undo / Redo

Are you interested in supporting GSequencer, feel free to contact me.

Note ABI might probably change. So it's recommended to install the
libraries in a private context.

cheers,
Joël
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[LAD] GSequencer v0.7.0 providing programming libraries

[Joël Krähemann]

Hi

I've just released GSequencer v0.7.0 what provides you reusable libraries.

http://gsequencer.org/download.html

* libags
* libags-thread
* libags-server
* libags-audio
* libags-gui
* libgsequencer

The documentation is some kind of out-dated. Would be great if someone would
show me interests in reusing libags-audio or alike to improve the docs.

bests,
Joël
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[LAD] Last call to contribute to GSequencer for implementing accessibility

[Joël Krähemann]

Hi all,

I'm currently doing accessibility features to GSequencer the resulted
code will be published as GSequencer v0.6.0.

If you want to contribute feel free to contact me by email.

http://gsequencer.org
https://github.com/gsequencer

bests Joël
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[LAD] Advanced Gtk+ Sequencer v0.5.0

[Joël Krähemann]

Hi all

GSequencer has a new minor release v0.5.0. Some highlights are:

* concurrent audio tree processing
* Multi-Output
* Improved notation  pattern editor
* Add custom LADSPA widgets to control ports
* ...

Please visit:

http://gsequencer.org


cheers,
Joël
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[LAD] Pledgie GSequencer v0.4.3

[Joël Krähemann]

Hi all

Please visit and enjoy some updates like compile linux realtime kernel
4.0.4-rt1 or hardened Advanced Gtk+ Sequencer and for sure call for
donation.

http://gsequencer.org
https://pledgie.com/campaigns/29411

cheers
Joël
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[LAD] Updated API Reference Manual to 0.4.3-beta of gsequencer

[Joël Krähemann]

Hi, me just updated API Reference Manual to 0.4.3-beta of gsequencer.
Please visit:

http://gsequencer.org/api/ags/index.html

cheers,
Joël
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[LAD] Lv2ui support for GSequencer

[Joël Krähemann]

Hi all, check out lv2ui support for gsequencer, it still unstable and
not tested, yet.

https://github.com/weedlight/ags-devel

For any suggestions me would benefit. Next days me improves thread
reliability and safety ...
Let me know if you want to contribute and please take a look at:

https://github.com/weedlight/ags-devel/issues

There was a big refactoring going on and the birth of Advanced Gtk+
Sequencer libraries, namely

* libags
* ibags-thread
* libags-audio
* libags-gui

For sure don't forget the application `gsequencer`.

http://gsequencer.org

Cheers,
Joël Krähemann
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[LAD] gsequencer help wanted

[Joël Krähemann]

Hi, all. Me just updated issues for gsequencer version 0.4.3, please help.

https://github.com/weedlight/ags-devel/issues

cheers,
Joël
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[LAD] Clean version of Advanced Gtk+ Sequencer 0.4.2-52

[Joël Krähemann]

Hi, Clean version available of Advanced Gtk+ Sequencer:

http://gsequencer.org/downloads/ags-0_4_2-52.tar.bz2

A half year later after releasing 0.4.2 its end is fourseeing, for now
me should be able to do extensive testing.

To compile and run:
./configure
make ags
./ags

bests
Joël Krähemann
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[LAD] Advanced Gtk+ Sequencer aka GSequencer now on GitHub

[Joël Krähemann]

Hi all, me just migrated gsequencer to GitHub.

http://www.gsequencer.org

Further me did renamed binary from `ags` to `gsequencer`. About the
state of the sequencer: Version 0.4.2-44 is believed to be stable.
Since me don't have the time to test it well, me need people to test
it. Please, let me know your experiences.

MIDI support is intended to be added for release Version 0.4.3 and
many other new exciting features. If someone can help with ALSA
rawmidi, please let me know.

I don't want to do JACK, since it is believed to be somehow the Qt thing.

What me can say so far about MIDI me read years ago about it in The
computer music tutorial - The MIT Press, ISBN 0-262-68082-3. And MIDI
consist of messages which are routeable.  Someone giving specification
how the MIDI message struct is passed to ALSA and how it looks like
would be great.


Thank you in advance
Joël
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Re: [LAD] Linux Audio Conference 2015 - Extension of Deadline

[Joël Krähemann]

Frank Neumann wrote:

[Sorry for cross-posting, please distribute.]

The Linux Audio Conference submissions deadline has been extended for
another week! Please note the new deadline:

 Sunday, Feb 8th, 2015 (23:59 HAST)

So, if you were considering to submit a paper but couldn't make up your
mind yet, here is your chance to become active! Never forget that this
conference lives through the people participating in it.

February 8th is the new deadline for all submission types: papers,
music, installations, workshop proposals.

Check out the link below for more info:
http://lac.linuxaudio.org/2015/participation

Note that as usual we have created two different OpenConf instances: one
for the submission of regular papers, lightning talks and poster
sessions, and a second one for music, installations and workshop
proposals. For the latter, please also check the detailed instructions
at http://lac.linuxaudio.org/2015/download/lac2015-call-for-miw.pdf.

If you have any questions concerning your submission, please don't
hesitate to contact us at l...@linuxaudio.org, or through our #lac2015
IRC channel on freenode.net.

Please spread this information to anyone who might be interested.

We look forward to your submissions and hope to meet you in Mainz in
April!

Sincerely,
The LAC 2015 Organizing Team
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Hi, would someone be interested in

http://ags.sf.net

me could prepare a speech or something alike to give an introduction or 
an overview of code organization if wished.


http://ags.sourceforge.net/api/ags/index.html

best regards
Joël Krähemann

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[LAD] minos-one_v1.1

[Joël Krähemann]

Hello everybody, please take a look at
http://sourceforge.net/p/ags/files/minos-one_v1.1.iso

It targets mainly users interested in gobject and gtk+ based applications.

minos-one starts as default within openbox and proper systemd usage.

It should be entirely based on Free Software, please report inappropriate
content.

Since threads aren't really reliable in `ags` me has some difficulties to
get a screencast because system freezes and no input possible, but take a
look at my google+ page of Advanced Gtk+ Sequencer

   - Linux 3.14.25-rt22
   - Advanced Gtk+ Sequencer 0.4.2-21
   - Swami
   - fluidsynth
   - LADSPA
   - ffmpeg
   - mplayer
   - wine-64
   - dssi-vst
   - bristol
   - jackd
   - ...
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[LAD] minos-one fixed live DVD

[Joël Krähemann]

Hi out there

Download the enhanced ISO image of minos-one

http://sourceforge.net/projects/ags/files/minos-one.iso
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[LAD] Live DVD including Advanced Gtk+ Sequencer and Swami

[Joël Krähemann]

Hi all, please take a look at

https://sourceforge.net/projects/ags/files/minos-lxdm.iso

and

https://sourceforge.net/p/ags/blog/2014/12/live-dvd-including-advanced-gtk-sequencer/

best regards
Joël
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Re: [LAD] Update advanced gtk+ sequencer

[Joël Krähemann]

Am Mittwoch, den 29.10.2014, 09:44 +0100 schrieb Jeremy Jongepier:
 On 10/29/2014 02:05 AM, Joël Krähemann wrote:
  Hi, I'd like to update wiki entry
  http://wiki.linuxaudio.org/apps/all/ags but can't log in anymore. 
  
  regards
  Joël
 
 Hello Joël,
 
 Did you also try the Send new password option?
 
 Jeremy
 
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Hi, yes for sure. Even I tried to create a new account without success.

Joël


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[LAD] Update advanced gtk+ sequencer

[Joël Krähemann]

Hi, I'd like to update wiki entry
http://wiki.linuxaudio.org/apps/all/ags but can't log in anymore. 

regards
Joël


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[LAD] Advanced Gtk+ Sequencer 0.4.2

[Joël Krähemann]

Advanced Gtk+ Sequencer 0.4.2 is out

Check download at:
http://sourceforge.net/projects/ags/files/ags-0_4_2.tar.bz2/download

or API Reference by issuing:
http://ags.sourceforge.net/api/ags/index.html

Advanced GTK+ Sequencer is intended to use for music composition. Use
its piano roll, synth, matrix editor, drum machine, soundfont2 player,
mixer or the output panel.



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[LAD] Advanced Gtk+ Sequencer API online

[Joël Krähemann]

Hi all

Please take a look at http://ags.sf.net/api/ags and let me know what
you're missing.
There may follow some corrections if you find mistakes let me know, too.
At the moment there probably plenty of them.

kind regards
Joël


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Re: [LAD] Experience driven design and Linux Audio

[Joël Krähemann]

On tal, 2014-09-30 at 10:56 -0400, Paul Davis wrote:
 
 
 On Tue, Sep 30, 2014 at 9:58 AM, Harry van Haaren
 harryhaa...@gmail.com wrote:
 Hi Linux Audio Developers,
 
 
 TL;DR; Discussing experience driven design for linux audio.
 
 
 I'd like to discuss the age of experiences. Allow me 10
 minutes of
 your time, to watch a video by Aral Balkan talk about
 development of
 technology, FLOSS, design, and the future.
 
 las HarryHaaren: interesting talk
 las HarryHaaren: i want to agree with him except for one major issue
 (for me)
 las HarryHaaren: i'm not interested in making consumer tools
 HarryHaaren las, I came across Aral's work recently, and its been
 very interesting for me anyway.
 las HarryHaaren: and if i'm not making consumer tools, then my model
 is not apple but tools for cabinetry
 HarryHaaren sure, valid point: I agree.
 las HarryHaaren: and everything he says would be total bullshit and
 totally inappropriate there
 HarryHaaren but I don't feel that's the case for the whole
 Linux-Audio eco-system
 las HarryHaaren: indeed
 las HarryHaaren: but basically, the bit that is missing is easily
 summarized: Live and plugins
 las HarryHaaren: these are where his experience driven stuff
 matters
 las HarryHaaren: and yes, i agree that it does matter
 HarryHaaren agreed: that happens to be just what i'm particularly
 interested in :D
 las HarryHaaren: he even uses the term tools
 las HarryHaaren: i think this is a serious abuse of the word, but
 he's not the one who started this
 las HarryHaaren: when my wife uses a computer, she really doesn't
 want tools, she wants his experience thing
 las HarryHaaren: tools are things people use to gain leverage over
 the world, so in some sense, it seems appropriate
 HarryHaaren I'd quite like some more of the experience thing - in
 the right places. And the power of under-the-hood available when/if
 required, agreed again
 las HarryHaaren: but they are also things that for centuries, people
 have expected to have to learn, to master
 las HarryHaaren: when i look at the design of iOS what i see is a
 huge effort to remove learning from the whole user experience
 las HarryHaaren: to make everything absolutely obvious (once you've
 learned a few basic ideas about the UI)
 HarryHaaren sure: not something i'm fond of for all situations: too
 much generic is bad in the arts / creative sectors IMO
 las HarryHaaren: when the *task* is simple, this seems appropriate
 las HarryHaaren: but when the *task* is not simple, i think its
 inappropriate
 las HarryHaaren: if you look at a table saw or a crosscut saw or a
 router, they fail almost every possible test of user experience
 las HarryHaaren: they are dangerous, loud and more or less
 completely opaque as far as how to use them to get a particular result
 las HarryHaaren: and yet 
 HarryHaaren sure: but learn to use it and its no problem. I
 appreciate that, and i see how it applies to certain software too
 las HarryHaaren: yes, and the learning about the tool leads to
 learning about the task also
 las HarryHaaren: do you know how easy it would be to make a plugin
 called MakeItSoundBetter that just had 3 buttons?
 las HarryHaaren: change it, that was better, that was worse
 las HarryHaaren: people would love this tool. and by using it,
 they would learn absolutely *nothing* about what they were doing
 las HarryHaaren: i don't want to help create that sort of world
 las HarryHaaren: on the other hand, i don't do much auto
 maintainance, so ... what does that say? :)
 HarryHaaren fair enough. I probably would. But let people click the
 advanced button, see the algorithms, and learn about the tool  the
 task
  
 
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Why doesn't Harry learn howto do a dial. I just take a look at his code
and it just sucks. Why don't you take a look how it should have been
done. For sure you will get it for once.

https://sourceforge.net/p/ags/code/HEAD/tree/src/ags/widget/ags_dial.c

kind regards
Joël



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Re: [LAD] Experience driven design and Linux Audio

[Joël Krähemann]

On arb, 2014-10-01 at 12:39 +0100, Harry van Haaren wrote:
 On Wed, Oct 1, 2014 at 12:26 PM, Joël Krähemann weedli...@gmail.com wrote:
  Why doesn't Harry learn howto do a dial. I just take a look at his code
  and it just sucks.
 
 Hi Joel,
 
 The topic isn't the quality of my code: I'm sorry to hear you feel it
 just sucks. If you wish to discuss the quality of code, please
 contact me directly by email, or start a new thread with an
 appropriate topic.
 
 But please, lets not stray away from the topic at hand: which is
 desining user-interfaces with the objective to improve the experience
 of using a piece of software, and not directly focussing on the
 features that the software provides.
 
 I welcome your input in this mailing-list thread on how we can make
 FLOSS / Linux Audio programs have a better user experience.
 Cheers, -Harry
 

Excuse me being unpolite I just was thinking about all day. I can say it
sucks because me was at the same point.
Please take this as a chance to learn where the user benefits of
experience.

Scaling is done normally between -1.0 ... 0.0 ... 1.0
Your constants are false.

I can't say if it was cause of selfishness looking at the code but
telling you that you're wrong is cause wanting you to help.

have a nice evening and kind regards
Joël




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Re: [LAD] using libsndfile to write signed short

[Joël Krähemann]

On sab, 2014-09-27 at 09:36 +0100, Harry van Haaren wrote:
 On Sat, Sep 27, 2014 at 6:11 AM, Joël Krähemann weedli...@gmail.com wrote:
  Am I correct assuming 1 sample of stereo frames will be written 44100
  times by a rate of 44100 Hz audio sampled data?
 Yes. Just to be 100% clear, a sample is a *single* point of data.
 
 In a mono situation: a frame refers to the single sample for that channel.
 In stereo: a frame refers to 2 samples, one for *each* channel.
 
 So the difference between a frame and a sample is that a sample is
 literally a single data point, while a frame is a single data point
 for each channel.
 
  Whereby one sample contains 2 frames.
 See above :)
 
  CHANNELS = 2
  buffer_size_per_second = CHANNELS * 44100 * sizeof(signed short);
 Yep. The link below is useful for double checking, and for quick disk
 space calculations:
 http://www.sounddevices.com/calculator/
 
 I've written a tutorial on using SndFile to write to disk: perhaps a
 useful resource to check / play with:
 https://github.com/harryhaaren/openAudioProgrammingTutorials/blob/master/writingSoundfileToDisk/writingSoundfileToDisk.cpp
 
 HTH, -Harry
 
Do you know that WAV is interleaved? Currently I'm looking for something
like encoding multi-channel sources.



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Re: [LAD] using libsndfile to write signed short

[Joël Krähemann]

On Fri, 2014-09-26 at 10:20 +0200, Cedric Roux wrote:
 On 09/25/2014 11:50 PM, Joël Krähemann wrote:
  void
  ags_sndfile_write(AgsPlayable *playable, signed short *buffer, guint
  buffer_length)
  {
 AgsSndfile *sndfile;
 sf_count_t multi_frames, retval;
 
 sndfile = AGS_SNDFILE(playable);
 
 multi_frames = buffer_length;
 retval = sf_write_short(sndfile-file, buffer, multi_frames);
 
 If buffer_length gives the number of bytes of the buffer,
 you may be in trouble here. For sf_write_short, /usr/include/sndfile.h
 says:
 ** All of these read/write function return number of items read/written.
 See also the libsndfile FAQ:
 http://www.mega-nerd.com/libsndfile/FAQ.html#Q012
 
 HTH
 
 
 if(retval  multi_frames){
   //sf_seek(sndfile-file, (multi_frames - retval),
  SEEK_CUR);
 }
  }

This is how the buffer is allocated. Strange to me is

multi_frames = buffer_length;

or

multi_frames = sndfile-file-info-channels * buffer_length;

gives about the same size of file.



  /* buffer */
  devout-buffer = (signed short **) malloc(4 * sizeof(signed short*));
  devout-buffer[0] = (signed short *) malloc(devout-dsp_channels *
devout-buffer_size * sizeof(signed short));
  devout-buffer[1] = (signed short *) malloc(devout-dsp_channels *
devout-buffer_size * sizeof(signed short));
  devout-buffer[2] = (signed short *) malloc(devout-dsp_channels *
devout-buffer_size * sizeof(signed short));
  devout-buffer[3] = (signed short *) malloc(devout-dsp_channels *
devout-buffer_size * sizeof(signed short));



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Re: [LAD] using libsndfile to write signed short

[Joël Krähemann]

On Fri, 2014-09-26 at 12:15 +0200, Joël Krähemann wrote:
 On Fri, 2014-09-26 at 10:20 +0200, Cedric Roux wrote:
  On 09/25/2014 11:50 PM, Joël Krähemann wrote:
   void
   ags_sndfile_write(AgsPlayable *playable, signed short *buffer, guint
   buffer_length)
   {
  AgsSndfile *sndfile;
  sf_count_t multi_frames, retval;
  
  sndfile = AGS_SNDFILE(playable);
  
  multi_frames = buffer_length;
  retval = sf_write_short(sndfile-file, buffer, multi_frames);
  
  If buffer_length gives the number of bytes of the buffer,
  you may be in trouble here. For sf_write_short, /usr/include/sndfile.h
  says:
  ** All of these read/write function return number of items read/written.
  See also the libsndfile FAQ:
  http://www.mega-nerd.com/libsndfile/FAQ.html#Q012
  
  HTH
  
  
  if(retval  multi_frames){
//sf_seek(sndfile-file, (multi_frames - retval),
   SEEK_CUR);
  }
   }
 
 This is how the buffer is allocated. Strange to me is
 
 multi_frames = buffer_length;
 
 or
 
 multi_frames = sndfile-file-info-channels * buffer_length;
 
 gives about the same size of file.
 
 
 
   /* buffer */
   devout-buffer = (signed short **) malloc(4 * sizeof(signed short*));
   devout-buffer[0] = (signed short *) malloc(devout-dsp_channels *
 devout-buffer_size * sizeof(signed short));
   devout-buffer[1] = (signed short *) malloc(devout-dsp_channels *
 devout-buffer_size * sizeof(signed short));
   devout-buffer[2] = (signed short *) malloc(devout-dsp_channels *
 devout-buffer_size * sizeof(signed short));
   devout-buffer[3] = (signed short *) malloc(devout-dsp_channels *
 devout-buffer_size * sizeof(signed short));
 
 
 

The code should be correct rather a problem with the thread tree, once
more.




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Re: [LAD] using libsndfile to write signed short

[Joël Krähemann]

On Fri, 2014-09-26 at 13:40 +0200, Joël Krähemann wrote:
 On Fri, 2014-09-26 at 12:15 +0200, Joël Krähemann wrote:
  On Fri, 2014-09-26 at 10:20 +0200, Cedric Roux wrote:
   On 09/25/2014 11:50 PM, Joël Krähemann wrote:
void
ags_sndfile_write(AgsPlayable *playable, signed short *buffer, guint
buffer_length)
{
   AgsSndfile *sndfile;
   sf_count_t multi_frames, retval;
   
   sndfile = AGS_SNDFILE(playable);
   
   multi_frames = buffer_length;
   retval = sf_write_short(sndfile-file, buffer, multi_frames);
   
   If buffer_length gives the number of bytes of the buffer,
   you may be in trouble here. For sf_write_short, /usr/include/sndfile.h
   says:
   ** All of these read/write function return number of items read/written.
   See also the libsndfile FAQ:
   http://www.mega-nerd.com/libsndfile/FAQ.html#Q012
   
   HTH
   
   
   if(retval  multi_frames){
 //sf_seek(sndfile-file, (multi_frames - retval),
SEEK_CUR);
   }
}
  
  This is how the buffer is allocated. Strange to me is
  
  multi_frames = buffer_length;
  
  or
  
  multi_frames = sndfile-file-info-channels * buffer_length;
  
  gives about the same size of file.
  
  
  
/* buffer */
devout-buffer = (signed short **) malloc(4 * sizeof(signed short*));
devout-buffer[0] = (signed short *) malloc(devout-dsp_channels *
  devout-buffer_size * sizeof(signed short));
devout-buffer[1] = (signed short *) malloc(devout-dsp_channels *
  devout-buffer_size * sizeof(signed short));
devout-buffer[2] = (signed short *) malloc(devout-dsp_channels *
  devout-buffer_size * sizeof(signed short));
devout-buffer[3] = (signed short *) malloc(devout-dsp_channels *
  devout-buffer_size * sizeof(signed short));
  
  
  
 
 The code should be correct rather a problem with the thread tree, once
 more.
 
 
 
 

Am I correct assuming 1 sample of stereo frames will be written 44100
times by a rate of 44100 Hz audio sampled data?
Whereby one sample contains 2 frames. For one second, this would be a
sized array of:
CHANNELS = 2
buffer_size_per_second = CHANNELS * 44100 * sizeof(signed short);



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[LAD] using libsndfile to write signed short

[Joël Krähemann]

Does someone know about writing WAV using libsndfile?
My file becomes 174M big as using sf_writef_short() within 8s

please take a look at

http://ags.sf.net



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Re: [LAD] using libsndfile to write signed short

[Joël Krähemann]

On Thu, 2014-09-25 at 21:02 +0100, Harry van Haaren wrote:
 On Thu, Sep 25, 2014 at 8:50 PM, Joël Krähemann weedli...@gmail.com wrote:
  Does someone know about writing WAV using libsndfile?
  My file becomes 174M big as using sf_writef_short() within 8s
 
 Are you sure you're only writing each sample once? Sounds like there's
 an error in writing nframe samples for each sample or something.
 
 Its pretty easy: and there's a brilliant to-the-point blog post on
 using C++ interface (sndfile.hh) here:
 http://parumi.wordpress.com/2007/12/16/how-to-write-wav-files-in-c-using-libsndfile/
 
 If there's still issues, please pastebin some code, or ask a more
 specific question :)
 
 HTH, -Harry

There probably only those three functions involved:

void
ags_export_output_launch(AgsTask *task)
{
  AgsExportOutput *export_output;
  AgsExportThread *export_thread;
  AgsDevout *devout;
  AgsAudioFile *audio_file;
  gchar *filename;

  export_output = AGS_EXPORT_OUTPUT(task);
  devout = export_output-devout;
  export_thread = export_output-export_thread;
  filename = export_output-filename;

  /* open read/write audio file */
  audio_file = ags_audio_file_new(filename,
  devout,
  0, devout-dsp_channels);

  audio_file-samplerate = (int) devout-frequency;
  audio_file-channels = devout-dsp_channels;
  //  audio_file-format = devout-bits;

 
  audio_file-frames = export_output-frames;

  ags_audio_file_rw_open(audio_file,
 TRUE);


  g_message(export output);

  /* start export thread */
  g_object_set(G_OBJECT(export_thread),
   audio-file\0, audio_file,
   NULL);
  ags_thread_start(export_thread);
}


void
ags_export_thread_run(AgsThread *thread)
{
  AgsExportThread *export_thread;
  AgsDevout *devout;

  export_thread = AGS_EXPORT_THREAD(thread);

  devout =  thread-devout;

  if((AGS_DEVOUT_BUFFER1  (devout-flags)) != 0){
ags_audio_file_write(export_thread-audio_file,
 devout-buffer[0], devout-buffer_size);
  }else if((AGS_DEVOUT_BUFFER2  (devout-flags)) != 0){
ags_audio_file_write(export_thread-audio_file,
 devout-buffer[1], devout-buffer_size);
  }else if((AGS_DEVOUT_BUFFER3  (devout-flags)) != 0){
ags_audio_file_write(export_thread-audio_file,
 devout-buffer[2], devout-buffer_size);
  }else if((AGS_DEVOUT_BUFFER0  (devout-flags)) != 0){
ags_audio_file_write(export_thread-audio_file,
 devout-buffer[3], devout-buffer_size1);
  }
}

void
ags_sndfile_write(AgsPlayable *playable, signed short *buffer, guint
buffer_length)
{
  AgsSndfile *sndfile;
  sf_count_t multi_frames, retval;

  sndfile = AGS_SNDFILE(playable);

  multi_frames = buffer_length;
  retval = sf_write_short(sndfile-file, buffer, multi_frames);

  if(retval  multi_frames){
//sf_seek(sndfile-file, (multi_frames - retval),
SEEK_CUR);  

   
  }
}


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[LAD] Production release 0.4.2 planed of Advanced Gtk+ Sequencer

[Joël Krähemann]

Hi, as mentioned in subject: Production release 0.4.2 planed of Advanced
Gtk+ Sequencer. 

Now, comes your part I would like you to test functionality. I'll do for
you a wiki page of aspects to test.

Please visit http://ags.sf.net and wiki page
https://sourceforge.net/p/ags/wiki/testing-cheatsheet/

Happy to hear of you pretty soon!

Joël



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[LAD] who wants contribute to Advanced Gtk+ Sequencer

[Joël Krähemann]

Hi, I'm writing a software synth/sequencer called Advanced Gtk+
Sequencer. It won't take much time till first pre-release 0.4.0 I got
basic functions working. Now I'm pleased to ask if someone wants to
contribute. Note pulseaudio interferes with Advanced Gtk+ Sequencer to
achieve best results I even recommend WindowMaker as desktop or any
minimal window manager of your choice.

http://sourceforge.net/projects/ags/

If your asking yourself how to use Advanced Gtk+ Sequencer please take a
look at a screencast I just made this morning on Google+

The project features a wiki with some programming howtos and explanation
of internals.

bye
Joël


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Re: [LAD] [off-list] who wants contribute to Advanced Gtk+ Sequencer

[Joël Krähemann]

Am Dienstag, den 24.09.2013, 20:11 +0200 schrieb Ralf Mardorf:
 Hi :)
 
 I used the new tar, but next time I can checkout from svn.
 
 It failed to build again.
 
 checking for XMLRPC... no
 configure: error: Package requirements (xmlrpc = 1.32.5) were not met:
 
 No package 'xmlrpc' found
 
 Consider adjusting the PKG_CONFIG_PATH environment variable if you
 installed software in a non-standard prefix.
 
 Alternatively, you may set the environment variables XMLRPC_CFLAGS
 and XMLRPC_LIBS to avoid the need to call pkg-config.
 See the pkg-config man page for more details.
 [rocketmouse@archlinux ags_0.3.99]$ sudo pacman -Q xmlrpc-c
 xmlrpc-c 1:1.33.03-1
 
 Regards,
 Ralf
 

https://apps.fedoraproject.org/packages/xmlrpc-c-client

alien the package if using debian or derivates.

Is without xmlrpc but has missing bugfixes ...
https://github.com/weedlight/ags/tree/master/0.4.0/src/ags

I'll update github.com repo excluding xmlrpc.

The server isn't started by default and is only a collection of ideas
whereas many skelletons for a XML based scripting client. See for
further details:

https://sourceforge.net/p/ags/code/HEAD/tree/src/ags-client/scripting/ags_script.xsd


regards
Joël




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Re: [LAD] who wants contribute to Advanced Gtk+ Sequencer

[Joël Krähemann]

Am Mittwoch, den 25.09.2013, 01:10 +1000 schrieb Patrick Shirkey:
 On Wed, September 25, 2013 1:01 am, Joël Krähemann wrote:
  Hi, I'm writing a software synth/sequencer called Advanced Gtk+
  Sequencer. It won't take much time till first pre-release 0.4.0 I got
  basic functions working. Now I'm pleased to ask if someone wants to
  contribute.
 
 Looks like an interesting project.
 
  Note pulseaudio interferes with Advanced Gtk+ Sequencer to
  achieve best results I even recommend WindowMaker as desktop or any
  minimal window manager of your choice.
 
 
 Do you have any specific issues that you would like to flag?
 
 
  http://sourceforge.net/projects/ags/
 
  If your asking yourself how to use Advanced Gtk+ Sequencer please take a
  look at a screencast I just made this morning on Google+
 
  The project features a wiki with some programming howtos and explanation
  of internals.
 
 
 
 
 
 --
 Patrick Shirkey
 Boost Hardware Ltd
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A binding to existing plugins would be great if you have already
knowledge about lvm2 or ladspa that would be great.

Cheers
Joël


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Re: [LAD] who wants contribute to Advanced Gtk+ Sequencer

[Joël Krähemann]

Am Dienstag, den 24.09.2013, 18:40 +0300 schrieb Vytautas Jancauskas:
 sourceforge? what is this 1999?
 
 On Tue, Sep 24, 2013 at 6:32 PM, Ralf Mardorf
 ralf.mard...@alice-dsl.net wrote:
  On Tue, 2013-09-24 at 17:01 +0200, Joël Krähemann wrote:
  http://sourceforge.net/projects/ags/
 
  Hi :)
 
  ags_0.3.15-0 doesn't build.
 
  $ make
  gcc -g -c main.c -o main.o -I../ `pkg-config --cflags alsa glib-2.0 
  gobject-2.0 gdk-2.0 gdk-pixbuf-xlib-2.0 gmodule-2.0 gtk+-2.0 libxml-2.0 
  sndfile libinstpatch-1.0`
  main.c:21:35: fatal error: ags/audio/ags_channel.h: No such file or 
  directory
   #include ags/audio/ags_channel.h
 ^
  compilation terminated.
  make: *** [main.o] Error 1
  $ ls
  audio  Documentation  file  lib  license  main.c  main.h  Makefile  object  
  README  widget  X
 
  Regards,
  Ralf
 
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Excuse me I didn't put a tarred bzipeds archive file for a long time.

But I just uploaded one for you ...
You should download from version control as I wrote this mail, sorry.

regards
Joël



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Re: [LAD] [off-list] who wants contribute to Advanced Gtk+ Sequencer

[Joël Krähemann]

Am Dienstag, den 24.09.2013, 20:51 +0200 schrieb Joël Krähemann:
 Am Dienstag, den 24.09.2013, 20:11 +0200 schrieb Ralf Mardorf:
  Hi :)
  
  I used the new tar, but next time I can checkout from svn.
  
  It failed to build again.
  
  checking for XMLRPC... no
  configure: error: Package requirements (xmlrpc = 1.32.5) were not met:
  
  No package 'xmlrpc' found
  
  Consider adjusting the PKG_CONFIG_PATH environment variable if you
  installed software in a non-standard prefix.
  
  Alternatively, you may set the environment variables XMLRPC_CFLAGS
  and XMLRPC_LIBS to avoid the need to call pkg-config.
  See the pkg-config man page for more details.
  [rocketmouse@archlinux ags_0.3.99]$ sudo pacman -Q xmlrpc-c
  xmlrpc-c 1:1.33.03-1
  
  Regards,
  Ralf
  
 
 https://apps.fedoraproject.org/packages/xmlrpc-c-client
 
 alien the package if using debian or derivates.
 
 Is without xmlrpc but has missing bugfixes ...
 https://github.com/weedlight/ags/tree/master/0.4.0/src/ags
 
 I'll update github.com repo excluding xmlrpc.
 
 The server isn't started by default and is only a collection of ideas
 whereas many skelletons for a XML based scripting client. See for
 further details:
 
 https://sourceforge.net/p/ags/code/HEAD/tree/src/ags-client/scripting/ags_script.xsd
 
 
 regards
 Joël
 
 
 
 
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I just updated:
https://github.com/weedlight/ags/tree/master/0.4.0/src/ags


and it doesn't contain any xmlrpc client or server.

bye
Joël


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[LAD] `ags` and libinstpatch

[Joël Krähemann]

Hi, recently I found libinstpatch in debian repository. How can I read a
Instrument with this library? Please take a look at
sourceforge.net/projects/ags. 

libinstpatch will be initialized in main function.

The following functions are involved:

gboolean
ags_ipatch_open(AgsPlayable *playable, gchar *filename);

gboolean
ags_ipatch_sf2_reader_open(AgsPlayable *playable, gchar *filename);

void
ags_ipatch_sf2_reader_level_select(AgsPlayable *playable,
   guint nth_level, gchar
*sublevel_name,
   GError **error);

void
ags_ipatch_sf2_reader_iter_start(AgsPlayable *playable);

gboolean
ags_ipatch_sf2_reader_iter_next(AgsPlayable *playable);

void
ags_ipatch_sf2_reader_info(AgsPlayable *playable,
   guint *channels, guint *frames,
   guint *loop_start, guint *loop_end,
   GError **error);

short*
ags_ipatch_sf2_reader_read(AgsPlayable *playable,
   guint channel,
   GError **error);


then it will be translated to ags format AgsAudioSignal by:

GList*
ags_playable_read_audio_signal(AgsPlayable *playable,
   AgsDevout *devout,
   guint start_channel, guint
channels_to_read);



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