Hello

This is my first post on this forum, so I am sorry if I write something against the rules...

I started game programming in C# a couple of weeks ago, and now I am trying to include sound support in my project with the openAL library. Everything works perfectly, except: if it wants to do

IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);

it says data is 0.

Here is some of the full code of my class:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Tao.OpenAl;
using System.IO;

...

namespace Engine
{
public class SoundManager
{
...
public SoundManager()
{
Alut.alutInit();
...
}
...

Dictionary<string, SoundSource> _soundIdentifier = new dictionary<string, SoundSource>();
public void LoadSound(string soundId, string path)
{
// Generate a buffer.
int buffer = -1;
Al.alGenBuffers(1, out buffer);
int errorCode = Al.alGetError();
System.Diagnostics.Debug.Assert(errorCode == Al.AL_NO_ERROR);
int format;
float frequency;
int size;
System.Diagnostics.Debug.Assert(File.Exists(path));
IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);
System.Diagnostics.Debug.Assert(data != IntPtr.Zero);
// Load wav data into the generated buffer.
Al.alBufferData(buffer, format, data, size, (int)frequency);
// Everything seems ok, add it to the library.
_soundIdentifier.Add(soundId, new SoundSource(buffer, path));
}
}
}

I guess this is enough code to let you show.

The .wav file it wants to load is in my bin/debug folder (it gives no error at System.Diagnostics.Debug.Assert(File.Exists(path)).
I added the right references, and I also added the alut.dll file in de bin/debug folder.

Is there someone who is familiar with openAL or C# who could tell me what my problem is?

thanks
Nick

maybe a stupid question, but where should I put the statement Al.alGetError()? I already used one at the third line of my loadsound method, so why use it twice?

thanks
Nick

thanks,

I put it everywhere in the loadsound method and when I put a breakpoint and look at every line it says AL.ALGetError() is 0. So that doesn't really help me...


public void LoadSound(string soundId, string path)
{
// Generate a buffer.
int buffer = -1;
Al.alGenBuffers(1, out buffer);
int errorCode = Al.alGetError();
System.Diagnostics.Debug.Assert(errorCode == Al.AL_NO_ERROR);
int format;
float frequency;
int size;
System.Diagnostics.Debug.Assert(File.Exists(path));

IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);
int errorCode2 = Al.alGetError();
System.Diagnostics.Debug.Assert(data != IntPtr.Zero);
// Load wav data into the generated buffer.
Al.alBufferData(buffer, format, data, size, (int)frequency);
// Everything seems ok, add it to the library.
_soundIdentifier.Add(soundId, new SoundSource(buffer, path));
}

I am so sorry, for my questions but what should I exactly do? Could you post 2 or three lines plz? You say I can get more information about Alut.alutLoadMemoryFromFile not working by using AL.ALGetError(), but AL.ALGetError = 0! And what should I do with if errorCode2 == Al.AL_NO_ERROR if I already know it is (I put a breakpoint and checked the values of every line (F11)).