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support for ALC_ENUMERATION_EXT using LWJGL specific method: AL.getImplementations

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This commit is contained in:
Brian Matzon 2006-02-02 22:34:28 +00:00
parent bf84c8b361
commit ac3a70926b
4 changed files with 137 additions and 18 deletions
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76
src/java/org/lwjgl/openal/AL.java
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@ -31,6 +31,8 @@
*/
package org.lwjgl.openal;
import java.util.Vector;
import org.lwjgl.LWJGLException;
import org.lwjgl.LWJGLUtil;
import org.lwjgl.Sys;
@ -52,7 +54,7 @@ public final class AL {
/** Have we been created? */
private static boolean created;
static {
Sys.initialize();
}
@ -96,8 +98,17 @@ public final class AL {
* @param contextFrequency Frequency for mixing output buffer, in units of Hz (Common values include 11025, 22050, and 44100).
* @param contextRefresh Refresh intervalls, in units of Hz.
* @param contextSynchronized Flag, indicating a synchronous context.*
*/
public static void create(String deviceArguments, int contextFrequency, int contextRefresh, boolean contextSynchronized)
throws LWJGLException {
create(deviceArguments, contextFrequency, contextRefresh, contextSynchronized, true);
}
/**
* @param openDevice Whether to automatically open the device
* @see #create(String, int, int, boolean)
*/
public static void create(String deviceArguments, int contextFrequency, int contextRefresh, boolean contextSynchronized)
static void create(String deviceArguments, int contextFrequency, int contextRefresh, boolean contextSynchronized, boolean openDevice)
throws LWJGLException {
if (created)
@ -128,18 +139,20 @@ public final class AL {
AL10.initNativeStubs();
ALC.initNativeStubs();
device = ALC.alcOpenDevice(deviceArguments);
if (device == null)
throw new LWJGLException("Could not open ALC device");
if (contextFrequency == -1) {
context = ALC.alcCreateContext(device.device, null);
} else {
context = ALC.alcCreateContext(device.device,
ALCcontext.createAttributeList(contextFrequency, contextRefresh,
contextSynchronized ? ALC.ALC_TRUE : ALC.ALC_FALSE));
if(openDevice) {
device = ALC.alcOpenDevice(deviceArguments);
if (device == null)
throw new LWJGLException("Could not open ALC device");
if (contextFrequency == -1) {
context = ALC.alcCreateContext(device.device, null);
} else {
context = ALC.alcCreateContext(device.device,
ALCcontext.createAttributeList(contextFrequency, contextRefresh,
contextSynchronized ? ALC.ALC_TRUE : ALC.ALC_FALSE));
}
ALC.alcMakeContextCurrent(context.context);
}
ALC.alcMakeContextCurrent(context.context);
} catch (LWJGLException e) {
destroy();
throw e;
@ -189,4 +202,41 @@ public final class AL {
public static Object getContext() {
return context;
}
/**
*
* @return
*/
public static String[] getImplementations() throws LWJGLException, OpenALException {
if(AL.isCreated()) {
throw new OpenALException("Cannot enumerate devices if AL has already been created");
}
Vector availableDevices = new Vector();
try {
// init
create(null, 44100, 60, false, false);
// check for extension
if(!ALC.alcIsExtensionPresent("ALC_ENUMERATION_EXT")) {
throw new OpenALException("ALC_ENUMERATION_EXT extension not available");
}
// get list of published devices
String[] publishedDevices = ALC.ngetImplementations();
// run through them and verify
for (int i = 0; i < publishedDevices.length; i++) {
availableDevices.add(publishedDevices[i]);
}
} finally {
destroy();
}
String[] available = new String[availableDevices.size()];
availableDevices.copyInto(available);
return available;
}
}