public int Read(byte[] pv, int offset, int count)
{
if (Length == 0L)
{
return(0);
}
encryptedVideoFile.Seek(offset, SeekOrigin.Begin);
int length = encryptedVideoFile.Read(pv, 0, count);
VideoEncryption.DecryptBuffer(pv, length, offset);
return(length);
}
public void Read(byte[] pv, int offset, int count, IntPtr pcbRead)
{
if (Length == 0L)
{
return;
}
encryptedVideoFile.Seek(offset, SeekOrigin.Begin);
int length = encryptedVideoFile.Read(pv, 0, count);
VideoEncryption.DecryptBuffer(pv, length, (long)offset);
if (!(IntPtr.Zero != pcbRead))
{
return;
}
Marshal.WriteIntPtr(pcbRead, new IntPtr(length));
}