from:"Uwe Klotz"

Re: [Mixxx-devel] Learning how is Mixxx

2018-10-10 Thread Uwe Klotz


Hi Javor,

using gRPC for IPC wouldn't surprise me, we already discussed isolating 
components of Mixxx into separate processes to avoid crashing the main 
process, i.e. for decoding files.


But unfortunately Mixxx is still a monolithic application and we don't use 
gRPC. What we are using is Protobuf for serializing beat grids and musical 
key information.


Please join the discussion on https://mixxx.zulipchat.com/ if you have any 
question. The mailing list is only used for announcements.


Kind regards,

Uwe

On 08/10/2018 18:53, javier.vilarr...@gmail.com wrote:

Hi.

I recently started to try to write code for Mixxx. And I recognize that
I'm somehow lost.

The class hierarchy is difficult to follow and I have found no
documentation on it. But I can follow in the code, so no major problem.

The last surprise has been the use gRPC. I have read on the gRPC web
site and seems more or less clear what is it.

But I wonder why we are using a remote procedure call technology on
Mixxx.

Can someone clarify that for me?

Thanks in advance!!

Javor



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Re: [Mixxx-devel] Controller Questions

2018-07-07 Thread Uwe Klotz


Welcome, Thomas. Discussions now take place on Zulip:

https://mixxx.zulipchat.com/

I suggest to ask your valid questions there again.

Since I don't consider myself a controller mapping pro, please don't take my 
following remarks (see below) too serious.


Kind regards,

Uwe

On 05.07.2018 19:40, Thomas Brand wrote:

Hi *,

while revamping an old Mixxx controller map some questions popped up where
I didn't find an online hint:

-How can I read the current playhead position (in samples) from a script?
(the current work-around is to set an unused hotcue, read it's position
and clear it again)
track_samples * playposition? This should give sufficiently precise results. 
Please note that the number of samples depends on the number of channels.



-How can I toggle the loop totally independent of anything else?
For instance activating the loop *without* the playhead jumping to loop
start.
I understand that reloop_toggle with its asymmetric behavior seems 
inappropriate for this purpose.



-How can I play a specific range "one-shot" style?
For instance play the loop range only once. I was looking for a method
that is similar to play_n_samples() from current position.

That sounds more like a use case for the samplers rather than looping?


Last question: looking at deprecated methods, for
SelectNextPlaylist / SelectPrevPlaylist and SelectNextTrack /
SelectPrevTrack:
The syntax is exactly the same [Playlist] binary [Library] MoveDown / MoveUp.
I understand that these methods are context-sensitive and there is a
method to move focus like with TAB.
However if user clicks in UI anything, how could i set the focus directly
to for instance the tracklist?
This functionality seems to be missing. Please search Launchpad for a 
similar bug report, feature request, or feel free to create a new one.

Note: I had issues with loop_in / loop_out, roughly speaking the loop
handles were wandering along with the playhead sometimes.
This might be related to the press-and-hold mode of the loop_in/loop_out 
controls. You need  to handle the corresponding button release events or 
manually set their values to 0/false when using the designated buttons in 
combination with modifiers like Shift.


I had (and still have) issues with loop_out not being recognized reliably by 
Mixxx even though the control's value is set correctly:

https://bugs.launchpad.net/mixxx/+bug/1771368


I'm testing this with the mixxx-release-2.1.1.tar.gz tarball.

Any help is appreciated,
greetings

Thomas



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Re: [Mixxx-devel] Linux nightly builds

2017-12-03 Thread Uwe Klotz


https://github.com/mixxxdj/mixxx/pull/1405

Someone else should merge it ;)

On 03.12.2017 17:40, Sean M. Pappalardo - D.J. Pegasus wrote:


On 12/03/2017 07:18 AM, ronso wrote:

What happened to the linux build server?

Latest build at http://downloads.mixxx.org/builds/master/release/ is
from Nov 18th

The server is fine. A commit after 18 Nov 8PM EST broke the dependency
check:
https://builds.renegadetech.mixxx.org/job/master-release/architecture=amd64,platform=ubuntu/469/console

It might have been one of the Scons 3.0 changes. Uwe, any thoughts?

Sincerely,
Sean M. Pappalardo
"D.J. Pegasus"
Mixxx Developer - Controller Specialist



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Re: [Mixxx-devel] Linux nightly builds

2017-12-03 Thread Uwe Klotz

I can reproduce the issue when piping the ouput. In this case
sys.stdout.encoding that is used for decoding output from a subprocess seems
to be undefined and decoding fails:

https://stackoverflow.com/questions/492483/setting-the-correct-encoding-when-piping-stdout-in-python

Anyone with deeper Python knowledge that know how to fix this?

On 03.12.2017 17:40, Sean M. Pappalardo - D.J. Pegasus wrote:

On 12/03/2017 07:18 AM, ronso wrote:

What happened to the linux build server?

Latest build at http://downloads.mixxx.org/builds/master/release/ is
from Nov 18th

The server is fine. A commit after 18 Nov 8PM EST broke the dependency
check:
https://builds.renegadetech.mixxx.org/job/master-release/architecture=amd64,platform=ubuntu/469/console

It might have been one of the Scons 3.0 changes. Uwe, any thoughts?

Sincerely,
Sean M. Pappalardo
"D.J. Pegasus"
Mixxx Developer - Controller Specialist

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Re: [Mixxx-devel] Linux nightly builds

2017-12-03 Thread Uwe Klotz

I'll review my commits and try to guess what might be causing this issue.

Are you able to start the build with an additional scons argument? Then
please try "--debug=explain,presub,prepare,stacktrace".

Strange that neither our Trusty builds on Travis nor building with the
latest 2.x version of SCons on Fedora are affected.

Kind regards, Uwe