[Xboxkrnl/XConfig] add user audio config

- Allows for user to set their audio type in the config
- Record audio flags and how they function

src/xenia/kernel/xam/xam_info.cc

@@ -44,6 +44,7 @@ DEFINE_int32(avpack, 8,
              "Video");
 DECLARE_int32(user_country);
 DECLARE_int32(user_language);
+DECLARE_uint32(audio_flag);
 
 DEFINE_bool(staging_mode, 0,
             "Enables preview mode in dashboards to render debug information.",
@@ -648,7 +649,7 @@ dword_result_t lstrlenW_entry(lpu16string_t string) {
 }
 DECLARE_XAM_EXPORT1(lstrlenW, kNone, kImplemented);
 
-dword_result_t XGetAudioFlags_entry() { return 65537; }
+dword_result_t XGetAudioFlags_entry() { return cvars::audio_flag; }
 DECLARE_XAM_EXPORT1(XGetAudioFlags, kNone, kStub);
 
 /*

src/xenia/kernel/xboxkrnl/xboxkrnl_audio.cc

@@ -15,12 +15,14 @@
 #include "xenia/kernel/xboxkrnl/xboxkrnl_private.h"
 #include "xenia/xbox.h"
 
+DECLARE_uint32(audio_flag);
+
 namespace xe {
 namespace kernel {
 namespace xboxkrnl {
 
 dword_result_t XAudioGetSpeakerConfig_entry(lpdword_t config_ptr) {
-  *config_ptr = 0x00010001;
+  *config_ptr = cvars::audio_flag;
   return X_ERROR_SUCCESS;
 }
 DECLARE_XBOXKRNL_EXPORT1(XAudioGetSpeakerConfig, kAudio, kImplemented);

src/xenia/kernel/xboxkrnl/xboxkrnl_xconfig.cc

@@ -37,6 +37,23 @@ DEFINE_int32(user_country, 103,
              " 102=UA 103=US 104=UY 105=UZ 106=VE 107=VN 108=YE 109=ZA\n",
              "XConfig");
 
+DEFINE_uint32(
+    audio_flag, 0x00010001,
+    "Audio Mode Analog.\n"
+    " 0x00000001 = Dolby Pro Logic\n"
+    " 0x00000002 = Analog Mono\n"
+    "Audio Mode Digital.\n"
+    " 0x00000000 = Digital Stereo (choose one of the above by itself)\n"
+    " 0x00010000 = Dolby Digital\n"
+    " 0x00030000 = Dolby Digital with WMA PRO\n"
+    "Special Flags.\n"
+    " 0x00000003 = Stereo Bypass\n"
+    " 0x80000000 = Low Latency\n"
+    " This Config requires you to pair an analog and digitial flag together\n"
+    " while digital stereo only requires an analog flag. Bonus flags are\n"
+    " optional. Ex) 0x00010001\n",
+    "XConfig");
+
 DECLARE_bool(widescreen);
 DECLARE_bool(use_50Hz_mode);
 DECLARE_int32(video_standard);
@@ -109,6 +126,10 @@ X_STATUS xeExGetXConfigSetting(uint16_t category, uint16_t setting,
           xe::store_and_swap<uint32_t>(
               value, cvars::widescreen ? 0x00050000 : 0x00040000);
           break;
+        case 0x000B:  // XCONFIG_USER_AUDIO_FLAGS
+          setting_size = 4;
+          xe::store_and_swap<uint32_t>(value, cvars::audio_flag);
+          break;
         case 0x000C:  // XCONFIG_USER_RETAIL_FLAGS
           setting_size = 4;
           // TODO(benvanik): get this value.