/// <summary>
/// Read Audio Sectors
/// </summary>
/// <param name="sector">The sector where to start to read</param>
/// <param name="Buffer">The length must be at least CB_CDDASECTOR*Sectors bytes</param>
/// <param name="NumSectors">Number of sectors to read</param>
/// <returns>True on success</returns>
protected bool ReadSector(int sector, byte[] Buffer, int NumSectors)
{
if (TocValid && ((sector + NumSectors) <= GetEndSector(Toc.LastTrack)) &&
(Buffer.Length >= CB_AUDIO * NumSectors))
{
var rri = new Win32Functions.RAW_READ_INFO();
rri.TrackMode = Win32Functions.TRACK_MODE_TYPE.CDDA;
rri.SectorCount = (uint)NumSectors;
rri.DiskOffset = sector * CB_CDROMSECTOR;
uint BytesRead = 0;
if (
Win32Functions.DeviceIoControl(cdHandle, Win32Functions.IOCTL_CDROM_RAW_READ, rri,
(uint)Marshal.SizeOf(rri), Buffer, (uint)NumSectors * CB_AUDIO,
ref BytesRead, IntPtr.Zero) != 0)
{
return(true);
}
else
{
return(false);
}
}
else
{
return(false);
}
}
/// <summary>
/// Open the CD drive door
/// </summary>
/// <returns>True on success</returns>
public bool EjectCD()
{
TocValid = false;
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint Dummy = 0;
return
(Win32Functions.DeviceIoControl(cdHandle, Win32Functions.IOCTL_STORAGE_EJECT_MEDIA, IntPtr.Zero, 0,
IntPtr.Zero, 0, ref Dummy, IntPtr.Zero) != 0);
}
else
{
return(false);
}
}
protected bool ReadTOC()
{
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint BytesRead = 0;
TocValid =
Win32Functions.DeviceIoControl(cdHandle, Win32Functions.IOCTL_CDROM_READ_TOC, IntPtr.Zero, 0, Toc,
(uint)Marshal.SizeOf(Toc), ref BytesRead, IntPtr.Zero) != 0;
}
else
{
TocValid = false;
}
return(TocValid);
}
/// <summary>
/// Unlock CD drive
/// </summary>
/// <returns>True on success</returns>
public bool UnLockCD()
{
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint Dummy = 0;
var pmr = new Win32Functions.PREVENT_MEDIA_REMOVAL();
pmr.PreventMediaRemoval = 0;
return
(Win32Functions.DeviceIoControl(cdHandle, Win32Functions.IOCTL_STORAGE_MEDIA_REMOVAL, pmr,
(uint)Marshal.SizeOf(pmr), IntPtr.Zero, 0, ref Dummy, IntPtr.Zero) !=
0);
}
else
{
return(false);
}
}
/// <summary>
/// Check if there is CD in the drive
/// </summary>
/// <returns>True on success</returns>
public bool IsCDReady()
{
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint Dummy = 0;
if (
Win32Functions.DeviceIoControl(cdHandle, Win32Functions.IOCTL_STORAGE_CHECK_VERIFY, IntPtr.Zero, 0,
IntPtr.Zero, 0, ref Dummy, IntPtr.Zero) != 0)
{
return(true);
}
else
{
TocValid = false;
return(false);
}
}
else
{
TocValid = false;
return(false);
}
}
