u64 FileMemoryCard::GetCRC( uint slot )
{
wxFFile& mcfp( m_file[slot] );
if( !mcfp.IsOpened() ) return 0;
u64 retval = 0;
if(m_ispsx[slot])
{
if( !Seek( mcfp, 0 ) ) return 0;
// Process the file in 4k chunks. Speeds things up significantly.
u64 buffer[528*8]; // use 528 (sector size), ensures even divisibility
const uint filesize = mcfp.Length() / sizeof(buffer);
for( uint i=filesize; i; --i )
{
mcfp.Read( &buffer, sizeof(buffer) );
for( uint t=0; t<ArraySize(buffer); ++t )
retval ^= buffer[t];
}
}
else
{
retval = m_chksum[slot];
}
return retval;
}
s32 FileMemoryCard::Read( uint slot, u8 *dest, u32 adr, int size )
{
wxFFile& mcfp( m_file[slot] );
if( !mcfp.IsOpened() )
{
DevCon.Error( "(FileMcd) Ignoring attempted read from disabled slot." );
memset(dest, 0, size);
return 1;
}
if( !Seek(mcfp, adr) ) return 0;
return mcfp.Read( dest, size ) != 0;
}
s32 FileMemoryCard::EraseBlock( uint slot, u32 adr )
{
wxFFile& mcfp( m_file[slot] );
if( !mcfp.IsOpened() )
{
DevCon.Error( "MemoryCard: Ignoring erase for disabled slot." );
return 1;
}
if( !Seek(mcfp, adr) ) return 0;
return mcfp.Write( m_effeffs, sizeof(m_effeffs) ) != 0;
}
s32 FileMemoryCard::Save( uint slot, const u8 *src, u32 adr, int size )
{
wxFFile& mcfp( m_file[slot] );
if( !mcfp.IsOpened() )
{
DevCon.Error( "(FileMcd) Ignoring attempted save/write to disabled slot." );
return 1;
}
if(m_ispsx[slot])
{
m_currentdata.MakeRoomFor( size );
for (int i=0; i<size; i++) m_currentdata[i] = src[i];
}
else
{
if( !Seek(mcfp, adr) ) return 0;
m_currentdata.MakeRoomFor( size );
mcfp.Read( m_currentdata.GetPtr(), size);
for (int i=0; i<size; i++)
{
if ((m_currentdata[i] & src[i]) != src[i])
Console.Warning("(FileMcd) Warning: writing to uncleared data. (%d) [%08X]", slot, adr);
m_currentdata[i] &= src[i];
}
// Checksumness
{
if(adr == m_chkaddr)
Console.Warning("(FileMcd) Warning: checksum sector overwritten. (%d)", slot);
u64 *pdata = (u64*)&m_currentdata[0];
u32 loops = size / 8;
for(u32 i = 0; i < loops; i++)
m_chksum[slot] ^= pdata[i];
}
}
if( !Seek(mcfp, adr) ) return 0;
return mcfp.Write( m_currentdata.GetPtr(), size ) != 0;
}
s32 FileMemoryCard::Save( uint slot, const u8 *src, u32 adr, int size )
{
wxFFile& mcfp( m_file[slot] );
if( !mcfp.IsOpened() )
{
DevCon.Error( "(FileMcd) Ignoring attempted save/write to disabled slot." );
return 1;
}
if(m_ispsx[slot])
{
m_currentdata.MakeRoomFor( size );
for (int i=0; i<size; i++) m_currentdata[i] = src[i];
}
else
{
if( !Seek(mcfp, adr) ) return 0;
m_currentdata.MakeRoomFor( size );
mcfp.Read( m_currentdata.GetPtr(), size);
for (int i=0; i<size; i++)
{
if ((m_currentdata[i] & src[i]) != src[i])
Console.Warning("(FileMcd) Warning: writing to uncleared data. (%d) [%08X]", slot, adr);
m_currentdata[i] &= src[i];
}
// Checksumness
{
if(adr == m_chkaddr)
Console.Warning("(FileMcd) Warning: checksum sector overwritten. (%d)", slot);
u64 *pdata = (u64*)&m_currentdata[0];
u32 loops = size / 8;
for(u32 i = 0; i < loops; i++)
m_chksum[slot] ^= pdata[i];
}
}
if( !Seek(mcfp, adr) ) return 0;
int status = mcfp.Write( m_currentdata.GetPtr(), size );
if( status ) {
static auto last = std::chrono::time_point<std::chrono::system_clock>();
std::chrono::duration<float> elapsed = std::chrono::system_clock::now() - last;
if(elapsed > std::chrono::seconds(5)) {
wxString name, ext;
wxFileName::SplitPath(m_file[slot].GetName(), NULL, NULL, &name, &ext);
OSDlog( Color_StrongYellow, false, "Memory Card %s written.", (const char *)(name + "." + ext).c_str() );
last = std::chrono::system_clock::now();
}
return 1;
}
return 0;
}
