//
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER
// REMAINS UNCHANGED.
//
// Email: yetiicb@hotmail.com
//
// Copyright (C) 2002-2003 Idael Cardoso.
//
using System;
using System.Runtime.InteropServices;
namespace Ripper
{
public class CDBufferFiller
{
byte[] BufferArray;
int WritePosition = 0;
public CDBufferFiller(byte[] aBuffer)
{
BufferArray = aBuffer;
}
public void OnCdDataRead(object sender, DataReadEventArgs ea)
{
Buffer.BlockCopy(ea.Data, 0, BufferArray, WritePosition, (int)ea.DataSize);
WritePosition += (int)ea.DataSize;
}
}
/// <summary>
///
/// </summary>
public class CDDrive: IDisposable
{
private IntPtr cdHandle;
private bool TocValid = false;
private Win32Functions.CDROM_TOC Toc = null;
private char m_Drive = '\0';
private DeviceChangeNotificationWindow NotWnd = null;
public event EventHandler CDInserted;
public event EventHandler CDRemoved;
public CDDrive()
{
Toc
= new Win32Functions.
CDROM_TOC(); cdHandle = IntPtr.Zero;
}
public bool Open(char Drive)
{
Close();
if ( Win32Functions.GetDriveType(Drive+":\\") == Win32Functions.DriveTypes.DRIVE_CDROM )
{
cdHandle = Win32Functions.CreateFile("\\\\.\\"+Drive+':', Win32Functions.GENERIC_READ, Win32Functions.FILE_SHARE_READ, IntPtr.Zero, Win32Functions.OPEN_EXISTING, 0, IntPtr.Zero);
if ( ((int)cdHandle != -1) && ((int)cdHandle != 0) )
{
m_Drive = Drive;
NotWnd
= new DeviceChangeNotificationWindow
(); NotWnd.
DeviceChange +=new DeviceChangeEventHandler
(NotWnd_DeviceChange
); return true;
}
else
{
return true;
}
}
else
{
return false;
}
}
public void Close()
{
UnLockCD();
if ( NotWnd != null )
{
NotWnd.DestroyHandle();
NotWnd = null;
}
if ( ((int)cdHandle != -1) && ((int)cdHandle != 0) )
{
Win32Functions.CloseHandle(cdHandle);
}
cdHandle = IntPtr.Zero;
m_Drive = '\0';
TocValid = false;
}
public bool IsOpened
{
get
{
return ((int)cdHandle != -1) && ((int)cdHandle != 0);
}
}
public void Dispose()
{
Close();
GC.SuppressFinalize(this);
}
~CDDrive()
{
Dispose();
}
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;
}
protected int GetStartSector(int track)
{
if ( TocValid && (track >= Toc.FirstTrack) && (track <= Toc.LastTrack) )
{
Win32Functions.TRACK_DATA td = Toc.TrackData[track-1];
return (td.Address_1*60*75 + td.Address_2*75 + td.Address_3)-150;
}
else
{
return -1;
}
}
protected int GetEndSector(int track)
{
if ( TocValid && (track >= Toc.FirstTrack) && (track <= Toc.LastTrack) )
{
Win32Functions.TRACK_DATA td = Toc.TrackData[track];
return (td.Address_1*60*75 + td.Address_2*75 + td.Address_3)-151;
}
else
{
return -1;
}
}
protected const int NSECTORS = 13;
protected const int UNDERSAMPLING = 1;
protected const int CB_CDDASECTOR = 2368;
protected const int CB_QSUBCHANNEL = 16;
protected const int CB_CDROMSECTOR = 2048;
protected const int CB_AUDIO = (CB_CDDASECTOR-CB_QSUBCHANNEL);
/// <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))
{
Win32Functions.
RAW_READ_INFO 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>
/// Lock the CD drive
/// </summary>
/// <returns>True on success</returns>
public bool LockCD()
{
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint Dummy = 0;
Win32Functions.
PREVENT_MEDIA_REMOVAL pmr
= new Win32Functions.
PREVENT_MEDIA_REMOVAL(); pmr.PreventMediaRemoval = 1;
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>
/// Unlock CD drive
/// </summary>
/// <returns>True on success</returns>
public bool UnLockCD()
{
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint Dummy = 0;
Win32Functions.
PREVENT_MEDIA_REMOVAL 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>
/// Close the CD drive door
/// </summary>
/// <returns>True on success</returns>
public bool LoadCD()
{
TocValid = false;
if (((int)cdHandle != -1) && ((int)cdHandle != 0))
{
uint Dummy = 0;
return Win32Functions.DeviceIoControl(cdHandle, Win32Functions.IOCTL_STORAGE_LOAD_MEDIA, IntPtr.Zero, 0, IntPtr.Zero, 0, ref Dummy, IntPtr.Zero) != 0;
}
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;
}
}
/// <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;
}
}
/// <summary>
/// If there is a CD in the drive read its TOC
/// </summary>
/// <returns>True on success</returns>
public bool Refresh()
{
if ( IsCDReady() )
{
return ReadTOC();
}
else
{
return false;
}
}
/// <summary>
/// Return the number of tracks on the CD
/// </summary>
/// <returns>-1 on error</returns>
public int GetNumTracks()
{
if ( TocValid )
{
return Toc.LastTrack - Toc.FirstTrack + 1;
}
else return -1;
}
/// <summary>
/// Return the number of audio tracks on the CD
/// </summary>
/// <returns>-1 on error</returns>
public int GetNumAudioTracks()
{
if ( TocValid )
{
int tracks = 0;
for (int i = Toc.FirstTrack - 1; i < Toc.LastTrack; i++)
{
if (Toc.TrackData[i].Control == 0 )
tracks++;
}
return tracks;
}
else
{
return -1;
}
}
/// <summary>
/// Read the digital data of the track
/// </summary>
/// <param name="track">Track to read</param>
/// <param name="Data">Buffer that will receive the data</param>
/// <param name="DataSize">On return the size needed to read the track</param>
/// <param name="StartSecond">First second of the track to read, 0 means to start at beginning of the track</param>
/// <param name="Seconds2Read">Number of seconds to read, 0 means to read until the end of the track</param>
/// <param name="OnProgress">Delegate to indicate the reading progress</param>
/// <returns>Negative value means an error. On success returns the number of bytes read</returns>
public int ReadTrack(int track, byte[] Data, ref uint DataSize, uint StartSecond, uint Seconds2Read, CdReadProgressEventHandler ProgressEvent)
{
if ( TocValid && (track >= Toc.FirstTrack) && (track <= Toc.LastTrack) )
{
int StartSect = GetStartSector(track);
int EndSect = GetEndSector(track);
if ( (StartSect += (int)StartSecond*75) >= EndSect )
{
StartSect -= (int)StartSecond*75;
}
if ( (Seconds2Read > 0) && ( (int)(StartSect + Seconds2Read*75) < EndSect ) )
{
EndSect = StartSect + (int)Seconds2Read*75;
}
DataSize = (uint)(EndSect - StartSect)*CB_AUDIO;
if ( Data != null)
{
if ( Data.Length >= DataSize )
{
CDBufferFiller BufferFiller
= new CDBufferFiller
(Data
); return ReadTrack
(track,
new CdDataReadEventHandler
(BufferFiller.
OnCdDataRead), StartSecond, Seconds2Read, ProgressEvent
); }
else
{
return 0;
}
}
else
{
return 0;
}
}
else
{
return -1;
}
}
/// <summary>
/// Read the digital data of the track
/// </summary>
/// <param name="track">Track to read</param>
/// <param name="Data">Buffer that will receive the data</param>
/// <param name="DataSize">On return the size needed to read the track</param>
/// <param name="OnProgress">Delegate to indicate the reading progress</param>
/// <returns>Negative value means an error. On success returns the number of bytes read</returns>
public int ReadTrack(int track, byte[] Data, ref uint DataSize, CdReadProgressEventHandler ProgressEvent)
{
return ReadTrack(track, Data, ref DataSize, 0, 0, ProgressEvent);
}
/// <summary>
/// Read the digital data of the track
/// </summary>
/// <param name="track">Track to read</param>
/// <param name="OnDataRead">Call each time data is read</param>
/// <param name="StartSecond">First second of the track to read, 0 means to start at beginning of the track</param>
/// <param name="Seconds2Read">Number of seconds to read, 0 means to read until the end of the track</param>
/// <param name="OnProgress">Delegate to indicate the reading progress</param>
/// <returns>Negative value means an error. On success returns the number of bytes read</returns>
public int ReadTrack(int track, CdDataReadEventHandler DataReadEvent, uint StartSecond, uint Seconds2Read, CdReadProgressEventHandler ProgressEvent)
{
if ( TocValid && (track >= Toc.FirstTrack) && (track <= Toc.LastTrack) && (DataReadEvent != null) )
{
int StartSect = GetStartSector(track);
int EndSect = GetEndSector(track);
if ( (StartSect += (int)StartSecond*75) >= EndSect )
{
StartSect -= (int)StartSecond*75;
}
if ( (Seconds2Read > 0) && ( (int)(StartSect + Seconds2Read*75) < EndSect ) )
{
EndSect = StartSect + (int)Seconds2Read*75;
}
uint Bytes2Read = (uint)(EndSect - StartSect)*CB_AUDIO;
uint BytesRead = 0;
byte[] Data
= new byte[CB_AUDIO
*NSECTORS
]; bool Cont = true;
bool ReadOk = true;
if ( ProgressEvent != null )
{
ReadProgressEventArgs rpa
= new ReadProgressEventArgs
(Bytes2Read, 0
); ProgressEvent(this, rpa);
Cont = !rpa.CancelRead;
}
for (int sector = StartSect; (sector < EndSect) && (Cont) && (ReadOk); sector+=NSECTORS)
{
int Sectors2Read = ( (sector + NSECTORS) < EndSect )?NSECTORS:(EndSect-sector);
ReadOk = ReadSector(sector, Data, Sectors2Read);
if ( ReadOk )
{
DataReadEventArgs dra
= new DataReadEventArgs
(Data,
(uint)(CB_AUDIO
*Sectors2Read
)); DataReadEvent(this, dra);
BytesRead += (uint)(CB_AUDIO*Sectors2Read);
if ( ProgressEvent != null )
{
ReadProgressEventArgs rpa
= new ReadProgressEventArgs
(Bytes2Read, BytesRead
); ProgressEvent(this, rpa);
Cont = !rpa.CancelRead;
}
}
}
if ( ReadOk )
{
return (int)BytesRead;
}
else
{
return -1;
}
}
else
{
return -1;
}
}
/// <summary>
/// Read the digital data of the track
/// </summary>
/// <param name="track">Track to read</param>
/// <param name="OnDataRead">Call each time data is read</param>
/// <param name="OnProgress">Delegate to indicate the reading progress</param>
/// <returns>Negative value means an error. On success returns the number of bytes read</returns>
public int ReadTrack(int track, CdDataReadEventHandler DataReadEvent, CdReadProgressEventHandler ProgressEvent)
{
return ReadTrack(track, DataReadEvent, 0, 0, ProgressEvent);
}
/// <summary>
/// Get track size
/// </summary>
/// <param name="track">Track</param>
/// <returns>Size in bytes of track data</returns>
public uint TrackSize(int track)
{
uint Size = 0;
ReadTrack(track, null, ref Size, null);
return Size;
}
public bool IsAudioTrack(int track)
{
if ( (TocValid) && (track >= Toc.FirstTrack) && (track <= Toc.LastTrack) )
{
return (Toc.TrackData[track-1].Control & 4) == 0;
}
else
{
return false;
}
}
public static char[] GetCDDriveLetters()
{
string res = "";
for ( char c = 'C'; c <= 'Z'; c++)
{
if ( Win32Functions.GetDriveType(c+":") == Win32Functions.DriveTypes.DRIVE_CDROM )
{
res += c;
}
}
return res.ToCharArray();
}
private void OnCDInserted()
{
if ( CDInserted != null )
{
CDInserted(this, EventArgs.Empty);
}
}
private void OnCDRemoved()
{
if ( CDRemoved != null )
{
CDRemoved(this, EventArgs.Empty);
}
}
private void NotWnd_DeviceChange(object sender, DeviceChangeEventArgs ea)
{
if ( ea.Drive == m_Drive )
{
TocValid = false;
switch ( ea.ChangeType )
{
case DeviceChangeEventType.DeviceInserted :
OnCDInserted();
break;
case DeviceChangeEventType.DeviceRemoved :
OnCDRemoved();
break;
}
}
}
}
}
