I get the following errors while running the CtcsoundAPIExamples.ipynb file:

My Setup:

• Python 3.7
• Jupyter 1.0.0
• Numpy 1.16.1
• ctsound 0.0.3

ERROR LOG:

ValueError Traceback (most recent call last)
~/Code/csound_python/venv/lib/python3.7/site-packages/numpy/core/_internal.py in _dtype_from_pep3118(spec)
597 stream = _Stream(spec)
--> 598 dtype, align = __dtype_from_pep3118(stream, is_subdtype=False)
599 return dtype

~/Code/csound_python/venv/lib/python3.7/site-packages/numpy/core/_internal.py in __dtype_from_pep3118(stream, is_subdtype)
674 else:
--> 675 raise ValueError("Unknown PEP 3118 data type specifier %r" % stream.s)
676

ValueError: Unknown PEP 3118 data type specifier 'P'

The above exception was the direct cause of the following exception:

ValueError Traceback (most recent call last)
in
68
69 # Create a set of ChannelUpdaters
---> 70 channels = [ChannelUpdater("amp", RandomLine(.4, .2)),
71 ChannelUpdater("freq", RandomLine(400, 80)),
72 ChannelUpdater("resonance", RandomLine(0.4, .3))]

in init(self, channelName, updater)
30 def init(self, channelName, updater):
31 self.updater = updater
---> 32 self.channel = createChannel(channelName)
33
34 def update(self):

in createChannel(channelName)
24 def createChannel(channelName):
25 chn, _ = c.channelPtr(channelName,
---> 26 ctcsound.CSOUND_CONTROL_CHANNEL | ctcsound.CSOUND_INPUT_CHANNEL)
27 return chn
28

~/Code/csound_python/venv/lib/python3.7/site-packages/ctcsound.py in channelPtr(self, name, type_)
1592 arrayType = np.ctypeslib.ndpointer(MYFLT, 1, (length,), 'C_CONTIGUOUS')
1593 p = cast(ptr, arrayType)
-> 1594 return np.ctypeslib.as_array(p), err
1595 elif ret == CSOUND_MEMORY:
1596 err = 'Not enough memory for allocating channel'

~/Code/csound_python/venv/lib/python3.7/site-packages/numpy/ctypeslib.py in as_array(obj, shape)
517 obj = ctypes.cast(obj, p_arr_type).contents
518
--> 519 return array(obj, copy=False)
520
521

ValueError: '<P' is not a valid PEP 3118 buffer format string

@kunstmusik I'm getting a build error when using the Ant method to build the examples on macOS Monterey (M1 silicon)

[javac] /Users/boonier/GIT/csoundAPI_examples/java/src/csoundapiexamples/Example1.java:18: error: package csnd6 does not exist
[javac] import csnd6.Csound;

Is the build config not finding the required Csound6 libs? The build.xml references the netbeans build config:

<import file="nbproject/build-impl.xml"/> in which I assume the class path is:

javac.classpath=\ ${libs.csnd6.classpath}

I assume this means the config though Netbeans, which I am not using.

I've got the usual symlinks in /Library/Java/Extensions for csnd6.jar and lib_jcsound6.jnilib

Any ideas?

many thanks

At present I am presented with example1.c etc so I have to wade through it all to find the example that shows what I am seeking

Please also supply some examples on how to do this, also for the sake of completeness.

Hello Steven,
I modified the getter names in my go binding of the Csound API, to a more 'go-ish' style. I updated the examples in https://github.com/fggp/csoundAPI_examples/go as well. Could you please pull those modifications ?

Regards