limunimi / pycarla Goto Github PK

Is your feature request related to a problem? Please describe.
Xruns happens in with a non-predictive behavior, crashing the whole Carla software

Describe the solution you'd like
Detect xruns, save the last processing command (e.g. synthesize_midi_file and the arguments) restart Carla, and resubmit the command.

Detection could happen via parsing of the Carla stdout.

Describe alternatives you've considered
Opened an issue for using the Carla python scripts, but received no attention at all falkTX/Carla#1316

I try to use pycarla to have a python script create and control midi output over the systems audio out.

I'm not very experienced with linux and this might cause the problem. Sorry for that... :)

However, I used the usage examples to have carla output a downloaded midifile. at the moment I'm using lubuntu 22.10.
Its a fresh install and I just did

sudo apt-get install jackd2
sudo apt-get install carla

However, Carla is not be able to start the engine if QjackCtl is not startet and running first. Maybe the wrong place to ask here?
Furthermore, I had to connect carla and systems out not only in the carla patchbay but also in the QjackCtl Patchcontrol have to connect them? I had a try earlier, where both of these steps worked flawlessly, but just cant reproduce it..
Then I installed pip and python 3.10.7 and followed the installation instructions. If I do all of that, created a carla project in the same folder and have carla up and running opening that project I used the following code:

from pycarla import Carla, MIDIPlayer, AudioRecorder, get_smf_duration
carla = Carla("A.carxp", ['-R', '-d', 'alsa'], min_wait=4)
carla.start()

player = MIDIPlayer()

with MIDIPlayer() as player:
    #print("Playing full file using freewheeling mode..")
	duration = get_smf_duration("test.mid")
	# in the following, `condition` ensures that both the recorder and player
	# start in the same cycle
	player.synthesize_midi_file("test.mid", in_fw=True, out_fw=True)
	# or asynchronously:
	# player.synthesize_midi_file("filename.mid", sync=False)
	# in this case, use
	# player.wait(in_fw=True, out_fw=True)
	player.close()
	server.close()
	#pass

try:
    carla.kill()
except Exception as e:
    print("Processes already closed!")

I get the following error:

Carla ready!
Traceback (most recent call last):
  File "/home/mane/test1.py", line 12, in <module>
    player.synthesize_midi_file("test.mid", in_fw=True, out_fw=True)
  File "/usr/local/lib/python3.10/dist-packages/pycarla/midiplayer.py", line 193, in synthesize_midi_file
    return self.synthesize_messages(messages, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/pycarla/midiplayer.py", line 118, in synthesize_messages
    self.activate()
  File "/usr/local/lib/python3.10/dist-packages/pycarla/midiplayer.py", line 36, in activate
    raise RuntimeWarning(
RuntimeWarning: Cannot find the Carla instance, Retry later!

I would really appreciate any help with that! This package is exactly what I need, if only I could get it running! :)

I also (at least I think I did) solved the following problems so far, maybe it makes sense to add this to the documentation?:

• Carla has to be installed first, before installing pycarla. May be obvious. Still was costing me a few hours to fix.
• I think the user needs to be added to the audio group in order to have real time performance? (used "sudo usermod -a -G audio UserID" and restart to fix the error)
• I also ran into the developement steps out of the documentation, was also not obvious to me, that this is for the pros... ;)e

Hi,
After launching this syntax :
poetry run python -m pycarla k12.mid

I m getting this errors :

note : k12.mid exist in the \pycarla

Thank !

Is your feature request related to a problem? Please describe.
Right now, synthesis of midi file requires the computation of the duration, the setup of Carla, MidiPlayer, and, maybe, of AudioRecorder.

Describe the solution you'd like
All these things could be performed with one single function

.

Tks.

Is your feature request related to a problem? Please describe.
Right now, synthesis of multiple MIDI files requires the correct alternation of AudioRecorder, MidiPlayer, correctness checks etc.

Describe the solution you'd like
Everything could be done with one single function as in https://github.com/LIMUNIMI/ContextAwareAMT/blob/master/mpc2c/asmd_resynth.py#L212

Is your feature request related to a problem? Please describe.
Installation and setup of Carla is a little complex, especially for non-experienced people

Describe the solution you'd like
When Carla.start is called, it automatically checks if the configuration file contains the patchbay mode string (ProcessMode=3 into ~/.config/falkTX/Carla2.conf), otherwise sets it and notify the user in stdout.

Raise an exception if the configuration file is not found. Need to understand what are the default paths of the configuration file for Windows and MacOS

Describe alternatives you've considered
Opened an issue in Carla, but received no attention at all falkTX/Carla#1315

Hi,
I m under win10 and after installed all the dependencies, created a small runnning Carla project, running Jack.
I get this error for this syntax, launched under pycarla folder:
...\pycarla>poetry run -m pycarla k12.mid
'-m' is not recognized as an internal or external command,
operable program or batch file.

Help needed, thanks Federico