public virtual void UpdateSavedataHashes(PSF psf, sbyte[] data, int size, sbyte[] @params, sbyte[] key)
{
// Setup the params, hash and mode.
sbyte[] hash = new sbyte[0x10];
// Determine the hashing mode.
int mode = 0;
int check_bit = 1;
if (!isNullKey(key))
{
if (Emulator.Instance.FirmwareVersion > 271)
{
mode = 4;
}
else
{
mode = 2;
}
}
// Check for previous SAVEDATA_PARAMS.
if (@params != null)
{
for (int i = 0; i < @params.Length; i++)
{
if (@params[i] != 0)
{
// Extract the mode setup from the already existing data.
mode = ((@params[0] >> 4) & 0xF);
check_bit = ((@params[0]) & 0xF);
break;
}
}
}
// New mode (after firmware 2.7.1).
if ((mode & 0x4) == 0x4)
{
// Generate a type 6 hash.
hash = GenerateSavedataHash(data, size, 6);
Array.Copy(hash, 0, data, 0x11B0 + 0x20, 0x10);
// Set the SAVEDATA_PARAMS byte to 0x41.
data[0x11B0] |= 0x01;
data[0x11B0] |= 0x40;
// Generate a type 5 hash.
hash = GenerateSavedataHash(data, size, 5);
Array.Copy(hash, 0, data, 0x11B0 + 0x70, 0x10);
}
else if ((mode & 0x2) == 0x2)
{ // Last old mode (firmware 2.0.0 to 2.7.1).
// Generate a type 4 hash.
hash = GenerateSavedataHash(data, size, 4);
Array.Copy(hash, 0, data, 0x11B0 + 0x20, 0x10);
// Set the SAVEDATA_PARAMS byte to 0x21.
data[0x11B0] |= 0x01;
data[0x11B0] |= 0x20;
// Generate a type 3 hash.
hash = GenerateSavedataHash(data, size, 3);
Array.Copy(hash, 0, data, 0x11B0 + 0x70, 0x10);
}
else
{ // First old mode (before firmware 2.0.0).
// Generate a type 2 hash.
hash = GenerateSavedataHash(data, size, 2);
Array.Copy(hash, 0, data, 0x11B0 + 0x20, 0x10);
// Set the SAVEDATA_PARAMS byte to 0x01.
data[0x11B0] |= 0x01;
}
if ((check_bit & 0x1) == 0x1)
{
// Generate a type 1 hash.
hash = GenerateSavedataHash(data, size, 1);
Array.Copy(hash, 0, data, 0x11B0 + 0x10, 0x10);
}
// Output the sealed override PSF file containing the SAVEDATA_PARAMS and file hashes.
try
{
// Update the SAVEDATA_PARAMS.
sbyte[] savedataParams = new sbyte[0x80];
for (int i = 0; i < 0x80; i++)
{
savedataParams[i] = data[0x11B0 + i];
}
psf.put("SAVEDATA_PARAMS", savedataParams);
}
catch (Exception)
{
// Ignore...
}
}
