Implement Initialize Audio Settings

First attempt to obtain audio settings configured by user request. At
the moment, selecting audio adapter device is functional. More to come
later on...

src/CxbxKrnl/CxbxKrnl.cpp

@@ -760,6 +760,8 @@ void CxbxKrnlInit
 	DbgPrintf("EmuMain: Initializing render window.\n");
 	XTL::CxbxInitWindow(pXbeHeader, dwXbeHeaderSize);
 
+    XTL::CxbxInitAudio();
+
 	EmuHLEIntercept(pXbeHeader);
 
 	if (bLLE_GPU)

src/CxbxKrnl/EmuDSound.cpp

@@ -128,6 +128,7 @@ XTL::X_XFileMediaObject::_vtbl XTL::X_XFileMediaObject::vtbl =
 #define DSOUND_MAX_SYNCHPLAYBACK_AUDIO 29
 
 // Static Variable(s)
+XBAudio                             g_XBAudio = XBAudio();
 extern LPDIRECTSOUND8               g_pDSound8 = NULL; //This is necessary in order to allow share with EmuDSoundInline.hpp
 static LPDIRECTSOUNDBUFFER          g_pDSoundPrimaryBuffer = NULL;
 //TODO: RadWolfie - How to implement support if primary does not permit it for DSP usage?
@@ -146,6 +147,19 @@ unsigned int                        g_iDSoundSynchPlaybackCounter = 0;
 
 #include "EmuDSoundInline.hpp"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void CxbxInitAudio()
+{
+    g_EmuShared->GetXBAudio(&g_XBAudio);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
 // ******************************************************************
 // * patch: DirectSoundCreate
 // ******************************************************************
@@ -179,7 +193,7 @@ HRESULT WINAPI XTL::EMUPATCH(DirectSoundCreate)
     g_bDSoundCreateCalled = TRUE;
 
     if (!initialized || !g_pDSound8) {
-        hRet = DirectSoundCreate8(NULL, ppDirectSound, NULL);
+        hRet = DirectSoundCreate8(&g_XBAudio.GetAudioAdapter(), ppDirectSound, NULL);
 
         if (FAILED(hRet)) {
             CxbxKrnlCleanup("DirectSoundCreate8 Failed!");

src/CxbxKrnl/EmuDSound.h

@@ -34,12 +34,21 @@
 #ifndef EMUDSOUND_H
 #define EMUDSOUND_H
 
-#include "Common/Xbe.h"
-
 #undef FIELD_OFFSET     // prevent macro redefinition warnings
-#include <windows.h>
 
 #include <dsound.h>
+#include "CxbxKrnl.h"
+#include "Emu.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void CxbxInitAudio();
+
+#ifdef __cplusplus
+}
+#endif
 
 // EmuIDirectSoundBuffer_Play flags
 #define X_DSBPLAY_LOOPING       0x00000001