public static CdtextData ReadCdtextData(char driveLetter)
{
using (CdromReader reader = new CdromReader(driveLetter))
{
return(reader.ReadCdtext());
}
}
private IEnumerator <ArraySegment <byte> > ReadData(CdromReader reader, uint diskOffset, uint sectorCount, bool includeRiffHeader)
{
try
{
uint totalBytes = (uint)CdromReader.SectorSize * sectorCount;
if (includeRiffHeader)
{
const uint RiffHeaderSize = 0x28;
const uint RiffHeaderSizeWithoutSize = 0x24;
streamTotalLength = totalBytes + RiffHeaderSize;
byte[] waveHeader = new byte[] {
0x52, 0x49, 0x46, 0x46, 0x24, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, 0x45,
0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00,
0x44, 0xAC, 0x00, 0x00, 0x10, 0xB1, 0x02, 0x00, 0x04, 0x00, 0x10, 0x00,
0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00
};
Array.Copy(BitConverter.GetBytes(totalBytes + RiffHeaderSizeWithoutSize), 0, waveHeader, 0x04, 4);
Array.Copy(BitConverter.GetBytes(totalBytes), 0, waveHeader, 0x28, 4);
yield return(new ArraySegment <byte>(waveHeader));
}
else
{
streamTotalLength = totalBytes;
}
const uint BufferSizeInSectors = 20;
const int BufferSize = (int)BufferSizeInSectors * CdromReader.SectorSize;
byte[] buffer = new byte[BufferSize];
uint position = 0;
while (position + BufferSizeInSectors < sectorCount)
{
reader.ReadSectors(diskOffset + position, BufferSizeInSectors, buffer);
yield return(new ArraySegment <byte>(buffer));
position += BufferSizeInSectors;
}
uint tail = sectorCount - position;
reader.ReadSectors(diskOffset + position, tail, buffer);
yield return(new ArraySegment <byte>(buffer, 0, (int)tail * CdromReader.SectorSize));
}
finally
{
reader.Close();
}
}
public CdromFileStream(CdromFileInfo fileInfo, bool includeWaveHeader)
{
if (fileInfo == null) throw new ArgumentNullException("fileInfo");
CdromReader reader = new CdromReader(fileInfo.DriveLetter);
try
{
this.dataSource = ReadData(reader,
fileInfo.StartSector, fileInfo.SectorCount, includeWaveHeader);
InitializeData();
}
catch
{
reader.Close();
throw;
}
}
public CdromFileStream(CdromFileInfo fileInfo, bool includeWaveHeader)
{
if (fileInfo == null)
{
throw new ArgumentNullException("fileInfo");
}
CdromReader reader = new CdromReader(fileInfo.DriveLetter);
try
{
this.dataSource = ReadData(reader,
fileInfo.StartSector, fileInfo.SectorCount, includeWaveHeader);
InitializeData();
}
catch
{
reader.Close();
throw;
}
}
public static CdtextData ReadCdtextData(char driveLetter)
{
using (CdromReader reader = new CdromReader(driveLetter))
{
return reader.ReadCdtext();
}
}
private IEnumerator<ArraySegment<byte>> ReadData(CdromReader reader, uint diskOffset, uint sectorCount, bool includeRiffHeader)
{
try
{
uint totalBytes = (uint)CdromReader.SectorSize * sectorCount;
if (includeRiffHeader)
{
const uint RiffHeaderSize = 0x28;
const uint RiffHeaderSizeWithoutSize = 0x24;
streamTotalLength = totalBytes + RiffHeaderSize;
byte[] waveHeader = new byte[] {
0x52, 0x49, 0x46, 0x46, 0x24, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, 0x45,
0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00,
0x44, 0xAC, 0x00, 0x00, 0x10, 0xB1, 0x02, 0x00, 0x04, 0x00, 0x10, 0x00,
0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 };
Array.Copy(BitConverter.GetBytes(totalBytes + RiffHeaderSizeWithoutSize), 0, waveHeader, 0x04, 4);
Array.Copy(BitConverter.GetBytes(totalBytes), 0, waveHeader, 0x28, 4);
yield return new ArraySegment<byte>(waveHeader);
}
else
streamTotalLength = totalBytes;
const uint BufferSizeInSectors = 20;
const int BufferSize = (int)BufferSizeInSectors * CdromReader.SectorSize;
byte[] buffer = new byte[BufferSize];
uint position = 0;
while (position + BufferSizeInSectors < sectorCount)
{
reader.ReadSectors(diskOffset + position, BufferSizeInSectors, buffer);
yield return new ArraySegment<byte>(buffer);
position += BufferSizeInSectors;
}
uint tail = sectorCount - position;
reader.ReadSectors(diskOffset + position, tail, buffer);
yield return new ArraySegment<byte>(buffer, 0, (int)tail * CdromReader.SectorSize);
}
finally
{
reader.Close();
}
}