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  OpenAL Info-App  (Read 1906 times)
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Offline SurfChris

Junior Newbie





« Posted 2007-05-09 17:53:36 »

Hi!
Did anybody wrote a small JOAL-Appliction which shows all Informations about the OpenAL implementation of the executing environment?
I have tried to but I must have forgotten something, because the results looked very strange to me.

That was my code:
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import net.java.games.joal.*;
import net.java.games.joal.util.*;


public class OpenALInfo {

AL al;
ALC alc;
   
   public void initOpenAL() {
      try {
         al = ALFactory.getAL();
          alc = ALFactory.getALC();
         alc.alcOpenDevice(null);
         ALut.alutInit();
      } catch (ALException exc){
         print("Fehler bei der AL-Initialisierung: "+exc);
      }
   }
   
   public void print(String str) {
      System.out.println(str);
   }
   
   public  void showALInfos() {
      print("OpenAL Version:             "+al.alGetString(AL.AL_VERSION));
      print("Renderer:                   "+al.alGetString(AL.AL_RENDERER));
      print("Vendor:                     "+al.alGetString(AL.AL_VENDOR));
      print("Available Extensions:       "+al.alGetString(AL.AL_EXTENSIONS));
      print("");
     
      String devSpecs = "";
      if (alc.alcGetDeviceSpecifiers() != null) {
         for (int i=0;i<alc.alcGetDeviceSpecifiers().length;i++) {
            devSpecs.concat(alc.alcGetDeviceSpecifiers()[i]);
         }
      } else devSpecs = "none";
      print("Available Devices:          "+devSpecs);
     
      print("ALC Extensions:             "+alc.alcGetString(alc.alcGetContextsDevice(alc.alcGetCurrentContext()),ALC.ALC_EXTENSIONS));
     
      String capDevSpecs = "";
      if (alc.alcGetCaptureDeviceSpecifiers() != null) {
         for (int i=0;i<alc.alcGetCaptureDeviceSpecifiers().length;i++) {
            capDevSpecs.concat(alc.alcGetCaptureDeviceSpecifiers()[i]);
         }
      } else capDevSpecs = "none";
      print("Available Capture Devices:  "+capDevSpecs   );
   }

   public static void main(String[] args) {
      OpenALInfo oali = new OpenALInfo();
      oali.initOpenAL();
      oali.showALInfos();
      System.exit(-1);
   }

}


My results were:
Version: OpenAL 1.2.1 (I thought 1.1 is the latest ?)
Renderer: Software (makes sense)
Vendor: Any (strange but ok)
Extensions :     (no result...)

Available Devices: none
ALC Extensions : null
Available Capture Devices: none


It looks like the AL Context hasn't been created right...

Is there a problem with the code, my OpenAL-implementation or my hardware?

Greetings and thanks
   Chris
Offline Ultraq

Junior Devvie




That's what she said


« Reply #1 - Posted 2007-05-10 06:45:49 »

What shows-up is dependant on what you've set as your default audio device, plus what your OpenAL driver is like.
Like you, I did write a similar sort of program a while ago.  I've attached it in-case you wanna take a look, but it seems to do the same job as yours.  Adjusting it to print-out in the same order as yours, here's what I get:

OpenAL version: OpenAL version 1.1
Vendor: Creative Labs Inc.
Device name: SB X-Fi Audio [DCE0]
AL extensions:
 - EAX
 - EAX1.0
 - EAX2.0
 - EAX3.0

Available output devices:
 - Generic Hardware
 - Generic Software
 - SB X-Fi Audio [DCE0]
Available capture devices:
 - SB X-Fi Audio [DCE0]
ALC extensions:
 - None

---
If anything, I'm kinda suspicious of the 'None' under ALC extensions, because I know it supports EFX (if I do alcIsExtensionPresent("ALC_EXT_EFX") it returns true).

As for your results, even though OpenAL 1.1 is the latest, your driver could return any old thing.  I think Mac's have what they call OpenAL 1.2, but I don't know what makes it different.
Curious: what kind of sound hardware and OS do you have?

Ultraq's Final MooCow
Bits and Pieces by Emanuel Rabina
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