Updated openal device loading and added debug info for startup

1 files changed, 54 insertions, 15 deletions

diff --git a/linden/indra/llaudio/llaudioengine_openal.cpp b/linden/indra/llaudio/llaudioengine_openal.cpp
index 93bc42b..c33b992 100644
--- a/linden/indra/llaudio/llaudioengine_openal.cpp
+++ b/linden/indra/llaudio/llaudioengine_openal.cpp
@@ -48,7 +48,9 @@ LLAudioEngine_OpenAL::LLAudioEngine_OpenAL()
         mWindBufSamples(0),
         mWindBufBytes(0),
         mWindSource(AL_NONE),
-        mNumEmptyWindALBuffers(MAX_NUM_WIND_BUFFERS)
+        mNumEmptyWindALBuffers(MAX_NUM_WIND_BUFFERS),
+        mContext(NULL),
+        mDevice(NULL)
 {
 }
 
@@ -69,30 +71,63 @@ bool LLAudioEngine_OpenAL::init(const S32 num_channels, void* userdata)
                 return false;
         }
 
+        // check for extensions
+        if (alcIsExtensionPresent(NULL, "ALC_ENUMERATION_EXT"))
+        {
+                llinfos << "Results for ALC_ENUMERATION_EXT:\n" 
+                                << ll_safe_string(alcGetString(NULL, ALC_DEVICE_SPECIFIER))
+                                << llendl;
+        }
+
+        // initialize device
+    ALCdevice* mDevice = alcOpenDevice(NULL); 
+    if (!mDevice)
+        {
+                llinfos << "OpenAL could not find an installed audio device. Aborting" << llendl;
+                ALCenum error = alcGetError(mDevice);
+                if (error != ALC_NO_ERROR)
+                {
+                        llinfos << "ALC error:" << ll_safe_string(alcGetString(mDevice, error)) << llendl;
+                }
+                return false;
+        }
+
+        // create context
+        ALCcontext* mContext = alcCreateContext(mDevice, NULL);
+        if (mContext != NULL)
+        {
+                alcMakeContextCurrent(mContext);
+                if (alGetError() != AL_NO_ERROR)
+                {
+                        llinfos << "ALC error:" << alGetError() << ". Could not set current context!" << llendl;
+                }
+        }
+        else
+        {
+                llinfos << "ALC error: could not create context from device!" << llendl;
+        }
+
         llinfos << "LLAudioEngine_OpenAL::init() OpenAL successfully initialized" << llendl;
 
+        llinfos << "ALC default device: " 
+                        << ll_safe_string(alcGetString(mDevice, ALC_DEFAULT_DEVICE_SPECIFIER)) 
+                        << llendl;
+
         llinfos << "OpenAL version: "
-                << ll_safe_string(alGetString(AL_VERSION)) << llendl;
+                        << ll_safe_string(alGetString(AL_VERSION)) << llendl;
         llinfos << "OpenAL vendor: "
-                << ll_safe_string(alGetString(AL_VENDOR)) << llendl;
+                        << ll_safe_string(alGetString(AL_VENDOR)) << llendl;
         llinfos << "OpenAL renderer: "
-                << ll_safe_string(alGetString(AL_RENDERER)) << llendl;
+                        << ll_safe_string(alGetString(AL_RENDERER)) << llendl;
 
-        ALint major = alutGetMajorVersion ();
-        ALint minor = alutGetMinorVersion ();
+        ALint major = alutGetMajorVersion();
+        ALint minor = alutGetMinorVersion();
         llinfos << "ALUT version: " << major << "." << minor << llendl;
 
-        ALCdevice *device = alcGetContextsDevice(alcGetCurrentContext());
-
-        alcGetIntegerv(device, ALC_MAJOR_VERSION, 1, &major);
-        alcGetIntegerv(device, ALC_MINOR_VERSION, 1, &minor);
+        alcGetIntegerv(mDevice, ALC_MAJOR_VERSION, 1, &major);
+        alcGetIntegerv(mDevice, ALC_MINOR_VERSION, 1, &minor);
         llinfos << "ALC version: " << major << "." << minor << llendl;
 
-        llinfos << "ALC default device: "
-                << ll_safe_string(alcGetString(device,
-                                               ALC_DEFAULT_DEVICE_SPECIFIER))
-                << llendl;
-
         return true;
 }
 
@@ -148,6 +183,10 @@ void LLAudioEngine_OpenAL::shutdown()
                 llwarns << "LLAudioEngine_OpenAL::shutdown() ALUT shutdown failed: " << alutGetErrorString (alutGetError ()) << llendl;
         }
 
+        alcMakeContextCurrent(NULL);
+    alcDestroyContext(mContext);
+    alcCloseDevice(mDevice);
+
         llinfos << "LLAudioEngine_OpenAL::shutdown() OpenAL successfully shut down" << llendl;
 
         delete mListenerp;