/// <summary>
/// Reads WAVE data from CD sectors
/// </summary>
/// <param name="startSector">Start sector number</param>
/// <param name="sectorCount">Number of sectors to read</param>
/// <param name="buffer">Buffer</param>
/// <returns>Number of bytes read</returns>
public uint ReadSectors(uint startSector, uint sectorCount, byte[] buffer)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (sectorCount > MaxSectorsToRead)
{
throw new ArgumentOutOfRangeException("sectorCount");
}
UnsafeCalls.RawReadInfo rawReadInfo = new UnsafeCalls.RawReadInfo();
rawReadInfo.DiskOffset = startSector * 2048L;
rawReadInfo.SectorCount = sectorCount;
uint read = 0;
bool result = UnsafeCalls.DeviceIoControl(hCd, UnsafeCalls.IoctlCdromRawRead,
rawReadInfo, UnsafeCalls.RawReadInfoSize,
buffer, (uint)buffer.Length, ref read, IntPtr.Zero);
if (!result)
{
throw new Win32Exception(UnsafeCalls.GetLastError());
}
return(read);
}
/// <summary>
/// Creates instance if the reader for assigned CD drive.
/// </summary>
/// <param name="driveLetter">CD drive letter</param>
public CdromReader(char driveLetter)
{
if (!Char.IsUpper(driveLetter))
{
throw new ArgumentException("Invalid drive letter");
}
uint driveType = UnsafeCalls.GetDriveType(driveLetter.ToString() + ":");
if (driveType != UnsafeCalls.CdromDriveType)
{
throw new CdromUtilsException("Drive is not a CDROM");
}
this.driveLetter = driveLetter;
hCd = UnsafeCalls.CreateFile(@"\\.\" + driveLetter.ToString() + ":",
UnsafeCalls.GenericRead, UnsafeCalls.FileShareRead,
IntPtr.Zero, UnsafeCalls.OpenExisting, 0, IntPtr.Zero);
if (hCd.IsInvalid)
{
throw new Win32Exception(UnsafeCalls.GetLastError());
}
}
/// <summary>
/// Reads CD Text from CD drive.
/// </summary>
/// <returns>CD Text</returns>
public CdtextData ReadCdtext()
{
const int ReadTocExOutputMaxSize = 0xFFF0;
UnsafeCalls.ReadTocEx readTocInput = new UnsafeCalls.ReadTocEx();
bool result;
byte[] buffer = new byte[ReadTocExOutputMaxSize];
uint read = 0;
result = UnsafeCalls.DeviceIoControl(hCd, UnsafeCalls.IoctlCdromReadTocEx,
readTocInput, UnsafeCalls.RawReadInfoSize,
buffer, (uint)buffer.Length, ref read, IntPtr.Zero);
if (!result)
{
throw new Win32Exception(UnsafeCalls.GetLastError());
}
Dictionary <UnsafeCalls.TocCdtextDataBlockPackType, StringBuilder> strings = new Dictionary <UnsafeCalls.TocCdtextDataBlockPackType, StringBuilder>();
List <UnsafeCalls.TocCdtextDataBlock> blocks = new List <UnsafeCalls.TocCdtextDataBlock>();
int position = 4; // skip length and reserved
int lastPosition = 2 + BitConverter.ToUInt16(buffer, 0);
while (position < lastPosition)
{
UnsafeCalls.TocCdtextDataBlock block = UnsafeCalls.GetTocCdtextDataBlock(buffer, position);
if (block.PackType == UnsafeCalls.TocCdtextDataBlockPackType.None)
{
break; // emtpy space?
}
blocks.Add(block);
StringBuilder sb;
if (!strings.TryGetValue(block.PackType, out sb))
{
strings.Add(block.PackType, sb = new StringBuilder());
}
sb.Append(block.GetText());
position += UnsafeCalls.TocCdtextDataBlockSize;
}
CdtextData cdtext = new CdtextData();
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.AlbumName))
{
cdtext.AlbumNames = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.AlbumName]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.Performer))
{
cdtext.Performers = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.Performer]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.Songwriter))
{
cdtext.Songwriters = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.Songwriter]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.Composer))
{
cdtext.Composers = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.Composer]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.Arranger))
{
cdtext.Arrangers = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.Arranger]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.Messages))
{
cdtext.Messages = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.Messages]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.Genre))
{
cdtext.Genres = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.Genre]).ToString());
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.DiscId))
{
cdtext.DiskId = StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.DiscId]).ToString();
}
if (strings.ContainsKey(UnsafeCalls.TocCdtextDataBlockPackType.UpcEan))
{
cdtext.UpcEans = SplitByZeros(StripTail(strings[UnsafeCalls.TocCdtextDataBlockPackType.UpcEan]).ToString());
}
return(cdtext);
}