piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-23 22:29:39 -06:00
Code Issues Packages Projects Releases Wiki Activity

Don't read from disk when checking volume type

Browse Source 
Should be faster than relying on the OS to cache the magic words.
Also gets rid of the odd recursive call in VolumeDirectory.
This commit is contained in:
JosJuice
2015-01-17 13:21:02 +01:00
parent 11a36ca8e2
commit ace060748b
19 changed files with 61 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
Source/Core/DiscIO/VolumeDirectory.cpp
View File

@ -66,12 +66,7 @@ bool CVolumeDirectory::IsValidDirectory(const std::string& _rDirectory)
bool CVolumeDirectory::Read(u64 _Offset, u64 _Length, u8* _pBuffer, bool decrypt) const
{
// VolumeHandler::IsWii is used here to check whether a Wii disc is used.
// That function calls this function to check a magic word in the disc header,
// so it is important that VolumeHandler::IsWii is not called when the header
// is being read with decrypt=false, as it would result in a stack overflow.
if (!decrypt && (_Offset + _Length >= 0x400) && VolumeHandler::IsWii())
if (!decrypt && (_Offset + _Length >= 0x400) && m_is_wii)
{
// Fully supporting this would require re-encrypting every file that's read.
// Only supporting the areas that IOS allows software to read could be more feasible.
@ -81,7 +76,7 @@ bool CVolumeDirectory::Read(u64 _Offset, u64 _Length, u8* _pBuffer, bool decrypt
return false;
}
if (decrypt && !VolumeHandler::IsWii())
if (decrypt && !m_is_wii)
PanicAlertT("Tried to decrypt data from a non-Wii volume");
// header
@ -210,6 +205,11 @@ std::string CVolumeDirectory::GetApploaderDate() const
return "VOID";
}
bool CVolumeDirectory::IsWiiDisc() const
{
return m_is_wii;
}
u64 CVolumeDirectory::GetSize() const
{
return 0;
@ -253,6 +253,7 @@ void CVolumeDirectory::SetDiskTypeWii()
m_diskHeader[0x1b] = 0xa3;
memset(&m_diskHeader[0x1c], 0, 4);
m_is_wii = true;
m_addressShift = 2;
}
@ -264,6 +265,7 @@ void CVolumeDirectory::SetDiskTypeGC()
m_diskHeader[0x1e] = 0x9f;
m_diskHeader[0x1f] = 0x3d;
m_is_wii = false;
m_addressShift = 0;
}