On Wednesday 10 May 2006 15:11, Victor Lazzarini wrote:

> That did it. Looks like directors are not an option for
> OSX (at least at the current implementation). Is it
> possible to do #ifdefs pre-processor directives in
> interface files? Somehow we need to disable the
> directors feature.

I think SWIG does support #ifdef in the interface files.
You can easily try that by replacing the first few lines of
the file with the following:

#ifndef MACOSX
%module(directors="1") csnd
#else
%module csnd
#endif

#ifndef MACOSX
%feature("director") CsoundCallbackWrapper;
%feature("nodirector") Csound;
#endif

By the way, the Java interface also uses directors, but in a
way that does not change the code generated for non-director
classes (unlike Python). Does the callback wrapper class work
on OS X ? Here is a simple example:

// CallbackExample.java

import csnd.*;

public class CallbackExample {

  // JavaCallbacks is a subclass of CsoundCallbackWrapper that
  // can override the methods MessageCallback(), InputValueCallback(),
  // OutputValueCallback(), and YieldCallback() for defining callbacks

  static class JavaCallbacks extends CsoundCallbackWrapper {
    JavaCallbacks(Csound cs)
    {
      super(cs);
    }
    public int YieldCallback()
    {
      java.lang.System.err.println("Yield called for " + GetCsound() + " !");
      return 1;
    }
    public void MessageCallback(int attr, String msg)
    {
      if (msg.endsWith("\n"))
        java.lang.System.err.print("ATTR: " + attr + "  MSG: " + msg);
      else
        java.lang.System.err.println("ATTR: " + attr + "  MSG: " + msg);
    }
  }

  public static void main(String argv[])
  {
    Csound cs = new Csound();
    // create a callback wrapper object for this instance of Csound
    // note that this will use the host data pointer of 'cs', so the
    // host data cannot be used for other purposes
    JavaCallbacks cb = new JavaCallbacks(cs);
    // enable the callbacks for which there are definitions above
    cb.SetYieldCallback();
    cb.SetMessageCallback();
    // build an argument list from the command line options
    CsoundArgVList args = new CsoundArgVList();
    args.Append("csound");
    for (int i = 0; i < argv.length; i++)
      args.Append(argv[i]);
    // call Compile() to see if the callbacks work
    cs.Compile(args.argc(), args.argv());
    // Reset() must be called before 'cs' or 'cb' is possibly
    // garbage collected, otherwise a crash may occur
    cs.Reset();
    // free memory used by the argument list; this is optional, and
    // would be done automatically when 'args' is garbage collected
    args.Clear();
  }
};

// end of CallbackExample.java


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