Merge pull request #3515 from booto/wii-region

DiscIO: Use specified Wii region for discs

Source/Core/DiscIO/VolumeWiiCrypted.cpp

@@ -160,10 +160,51 @@ IVolume::ECountry CVolumeWiiCrypted::GetCountry() const
 	if (!m_pReader)
 		return COUNTRY_UNKNOWN;
 
-	u8 country_code;
-	m_pReader->Read(3, 1, &country_code);
+	u8 country_byte;
+	if (!m_pReader->Read(3, 1, &country_byte))
+	{
+		return COUNTRY_UNKNOWN;
+	}
+
+	IVolume::ECountry country_value = CountrySwitch(country_byte);
+
+	u32 region_code;
+	if (!ReadSwapped(0x4E000, &region_code, false))
+	{
+		return country_value;
+	}
 
-	return CountrySwitch(country_code);
+	switch (region_code)
+	{
+	case 0:
+		switch (country_value)
+		{
+		case IVolume::COUNTRY_TAIWAN:
+			return IVolume::COUNTRY_TAIWAN;
+		default:
+			return IVolume::COUNTRY_JAPAN;
+		}
+	case 1:
+		return IVolume::COUNTRY_USA;
+	case 2:
+		switch (country_value)
+		{
+		case IVolume::COUNTRY_FRANCE:
+		case IVolume::COUNTRY_GERMANY:
+		case IVolume::COUNTRY_ITALY:
+		case IVolume::COUNTRY_NETHERLANDS:
+		case IVolume::COUNTRY_RUSSIA:
+		case IVolume::COUNTRY_SPAIN:
+		case IVolume::COUNTRY_AUSTRALIA:
+			return country_value;
+		default:
+			return IVolume::COUNTRY_EUROPE;
+	}
+	case 4:
+		return IVolume::COUNTRY_KOREA;
+	default:
+		return country_value;
+	}
 }
 
 std::string CVolumeWiiCrypted::GetMakerID() const