From: David Plans Casal <dpc@...>
Date: 2005-03-26T05:58:15+09:00
Subject: SWIG-ruby problem with FMOD

Hello everybody,

I'm just trying to use SWIG to create some Ruby bindings for FMOD  
(http://www.fmod.org/)

Using the simplest example from the examples that ship with the FMOD  
mac api, where there is a main.c file that simply plays a sound file...

I tried the following:

swig -ruby main.i

where main.i contained:

/* main.i */
%module main
%{
/* Put header files here (optional) */

#include "fmod.h"

%}

extern int main();

Then, I did (because doing it the extconf.rb didn't work either, gave  
same error as below):

gcc -fno-common -g -O2 -pipe -fno-common  
-I/usr/local/lib/ruby/1.8/powerpc-darwin -c main.c main_wrap.c

and

cc -dynamic -bundle -undefined suppress -flat_namespace -L'/usr/lib' -o  
Main.bundle main_wrap.o -ldl -lobjc

That got me a Main.bundle...

After that, I loaded Ruby's interactive shell, irb and did:

irb(main):001:0> require 'main'
=> true
irb(main):002:0> Main.main()
(irb):2: [BUG] Bus Error
ruby 1.8.1 (2004-03-15) [powerpc-darwin]

Abort trap

I don't understand why it isn't play the soundfile...complete n00b  
alert here...any hints would be much appreciated!

Below, the main.c file for reference:

/ 
*======================================================================= 
========================
  SIMPLEST
  Copyright (c), Firelight Technologies Pty, Ltd, 1999,2004.

  This is the simplest way to play a song through FMOD.  It is basically  
Init, Load, Play!
======================================================================== 
=======================*/

#include <stdio.h>
#include <stdlib.h>

#include "../../api/inc/fmod.h"
#include "../../api/inc/fmod_errors.h"	/* optional */
#include "../../api/inc/wincompat.h"

int main()
{
	FMUSIC_MODULE *mod = NULL;

	if (FSOUND_GetVersion() < FMOD_VERSION)
	{
		printf("Error : You are using the wrong DLL version!  You should be  
using FMOD %.02f\n", FMOD_VERSION);
		exit(1);
	}

	/*
	    INITIALIZE
	*/
	if (!FSOUND_Init(44100, 64, FSOUND_INIT_GLOBALFOCUS))
	{
		printf("%s\n", FMOD_ErrorString(FSOUND_GetError()));
		exit(1);
	}

	/*
	    LOAD SONG
	*/

#if defined(__MACH__) || defined(WIN32)
	mod = FMUSIC_LoadSong("../../media/invtro94.s3m");
#else	
	mod = FMUSIC_LoadSong(":::media:invtro94.s3m");
#endif	
	if (!mod)
	{
		printf("%s\n", FMOD_ErrorString(FSOUND_GetError()));
		exit(1);
	}

	/*
	    PLAY SONG
	*/

	FMUSIC_PlaySong(mod);

	/*
	    UPDATE INTERFACE
	*/

	printf("Press any key to quit\n");
	 
printf("================================================================ 
=========\n");
	printf("Playing %s...\n", FMUSIC_GetName(mod));
	do
	{
         printf("\rorder = %d/%d, row = %d/%d channels playing = %d cpu  
usage = %.02f%%     ", FMUSIC_GetOrder(mod), FMUSIC_GetNumOrders(mod),  
FMUSIC_GetRow(mod), FMUSIC_GetPatternLength(mod, FMUSIC_GetOrder(mod)),  
FSOUND_GetChannelsPlaying(), FSOUND_GetCPUUsage());
         fflush(stdout);
         Sleep(100);
	} while (!kbhit());

	getch();

	printf("\n");

	/*
	    FREE SONG AND SHUT DOWN
	*/

	FMUSIC_FreeSong(mod);
	FSOUND_Close();

     return 0;
}