private void Touch()
{
if (file != null)
{
return;
}
if (!persistent)
{
var tempFileName = TemporaryFilesManager.Instance.GetTemporaryFile();
FileCopier.Copy(underlyingFile, tempFileName, true);
underlyingFile = tempFileName;
}
file = new SerializableFileStreamWrapper(underlyingFile);
var size = blockSize * (long)numberOfBlocks;
// punch a hole if it is needed
if (file.Stream.Length < size)
{
file.Stream.Seek(size - 1, SeekOrigin.Begin);
file.Stream.WriteByte(0);
}
}
public SDCard(string imageFile, long? cardSize, bool persistent)
{
if(String.IsNullOrEmpty(imageFile))
{
throw new ConstructionException("No card image file provided.");
}
else
{
if(!persistent)
{
var tempFileName = TemporaryFilesManager.Instance.GetTemporaryFile();
FileCopier.Copy(imageFile, tempFileName, true);
imageFile = tempFileName;
}
file = new SerializableFileStreamWrapper(imageFile);
}
CardSize = cardSize ?? file.Stream.Length;
var cardIdentificationBytes = new byte[] {0x01, 0x00, 0x00, 0x00, // 1b always one + 7b CRC (ignored) + 12b manufacturing date + 4b reserved
0x00, 0x00, 0x00, 0x00, // 32b product serial number + 8b product revision
0x38, 0x6c, 0x75, 0x6d, 0x45, // Product name, 5 character string. "Emul8" (backwards)
0x00, 0x00, 0x00 // 16b application ID + 8b manufacturer ID
};
cardIdentification = new uint[4];
cardIdentification[0] = BitConverter.ToUInt32(cardIdentificationBytes, 0);
cardIdentification[1] = BitConverter.ToUInt32(cardIdentificationBytes, 4);
cardIdentification[2] = BitConverter.ToUInt32(cardIdentificationBytes, 8);
cardIdentification[3] = BitConverter.ToUInt32(cardIdentificationBytes, 12);
cardSpecificData = new uint[4];
uint deviceSize = (uint)(CardSize / 0x80000 - 1);
cardSpecificData[0] = 0x0a4040af;
cardSpecificData[1] = 0x3b377f80 | ((deviceSize & 0xffff) << 16);
cardSpecificData[2] = 0x5b590000 | ((deviceSize >> 16) & 0x3f);
cardSpecificData[3] = 0x400e0032;
}
private void Init(string fileName)
{
if(nonPersistent)
{
var tempFile = TemporaryFilesManager.Instance.GetTemporaryFile();
FileCopier.Copy(fileName, tempFile, true);
fileName = tempFile;
}
stream = new SerializableFileStreamWrapper(fileName);
CheckUnderlyingFile();
size2n = (byte)Misc.Logarithm2(size);
buffer = new byte[DesiredBufferSize];
}
private void Touch()
{
if(file != null)
{
return;
}
if(!persistent)
{
var tempFileName = TemporaryFilesManager.Instance.GetTemporaryFile();
FileCopier.Copy(underlyingFile, tempFileName, true);
underlyingFile = tempFileName;
}
file = new SerializableFileStreamWrapper(underlyingFile);
var size = blockSize * (long)numberOfBlocks;
// punch a hole if it is needed
if(file.Stream.Length < size)
{
file.Stream.Seek(size - 1, SeekOrigin.Begin);
file.Stream.WriteByte(0);
}
}
