SWIG-ruby problem with FMOD

[David Plans Casal]

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;
}

 

[Steven Jenkins]

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

SWIG doesn't know what to do with main(). It only wants to see the
function prototypes in the library header files. You'll have to write
your own main() equivalent in Ruby.

SWIG is cool, but it's not simple. If you're new to it, I'd suggest
doing a couple of really simple examples first. Get a wrapper working for

-- begin sum.h
int sum(int a, int b);
-- end sum.h

-- begin sum.c
int sum(int a, int b)
{
return a + b;
}
-- end sum.c

and you'll be on your way.

Steve