public bool ReadCDText(out List <Track> cdTracks)
{
cdTracks = null;
int numTracks = GetNumTracks();
if (numTracks == -1)
{
return(false);
}
Version version = Environment.OSVersion.Version;
if (((Environment.OSVersion.Platform != PlatformID.Win32NT) || (version.Major < 5)) || ((version.Major == 5) && (version.Minor < 1)))
{
return(false);
}
Kernel32.CDROM_READ_TOC_EX structure = new Kernel32.CDROM_READ_TOC_EX
{
Format = Kernel32.CDROM_READ_TOC_EX_FORMAT.CDTEXT
};
int cb = Marshal.SizeOf(structure);
IntPtr ptr = Marshal.AllocHGlobal(cb);
Marshal.StructureToPtr(structure, ptr, true);
Kernel32.CDROM_TOC_CD_TEXT_DATA cdrom_toc_cd_text_data = new Kernel32.CDROM_TOC_CD_TEXT_DATA
{
Length = (ushort)Marshal.SizeOf(typeof(Kernel32.CDROM_TOC_CD_TEXT_DATA))
};
IntPtr ptr2 = Marshal.AllocHGlobal(cdrom_toc_cd_text_data.Length);
Marshal.StructureToPtr(cdrom_toc_cd_text_data, ptr2, true);
uint bytesReturned = 0;
bool flag = Kernel32.DeviceIoControl(this.CDHandle, Kernel32.IOCTL_CDROM_READ_TOC_EX, ptr, (uint)cb, ptr2, cdrom_toc_cd_text_data.Length, ref bytesReturned, IntPtr.Zero) != 0;
if (flag)
{
Marshal.PtrToStructure(ptr2, cdrom_toc_cd_text_data);
cdTracks = this.BuildCDTracks(cdrom_toc_cd_text_data);
}
Marshal.FreeHGlobal(ptr2);
Marshal.FreeHGlobal(ptr);
return(flag && cdTracks != null && cdTracks.Count > 0);
}
private List <Track> BuildCDTracks(Kernel32.CDROM_TOC_CD_TEXT_DATA Data)
{
int numTracks = GetNumTracks();
if (numTracks == -1)
{
return(null);
}
List <Track> tracks = new List <Track>();
List <string> titles = new List <string>();
List <string> artists = new List <string>();
List <string> genres = new List <string>();
try
{
Debug.WriteLine("CD_TEXT info dump BEGIN:");
StringBuilder sb = new StringBuilder();
for (int i = 0; i < Data.Descriptors.MaxIndex; i++)
{
string line = "";
foreach (char c in Data.Descriptors[i].Text)
{
if (c != '\0')
{
line += c;
}
else
{
line += ".";
}
}
sb.Append(line);
}
Debug.WriteLine("CD_TEXT: " + sb.ToString());
Debug.WriteLine("CD_TEXT info dump END");
string item = string.Empty;
for (int i = 0; i < Data.Descriptors.MaxIndex; i++)
{
Kernel32.CDROM_TOC_CD_TEXT_DATA_BLOCK cdrom_toc_cd_text_data_block = Data.Descriptors[i];
foreach (char ch in cdrom_toc_cd_text_data_block.Text)
{
if (ch != '\0')
{
item = item + ch;
continue;
}
switch (cdrom_toc_cd_text_data_block.PackType)
{
case Kernel32.CDROM_CD_TEXT_PACK.ALBUM_NAME:
if (string.IsNullOrEmpty(item) == false || titles.Count == 0)
{
titles.Add(item);
}
item = string.Empty;
break;
case Kernel32.CDROM_CD_TEXT_PACK.GENRE:
if (string.IsNullOrEmpty(item) == false || genres.Count == 0)
{
genres.Add(item);
}
item = string.Empty;
break;
case Kernel32.CDROM_CD_TEXT_PACK.PERFORMER:
if (string.IsNullOrEmpty(item) == false || artists.Count == 0)
{
artists.Add(item);
}
item = string.Empty;
break;
default:
item = string.Empty;
break;
}
}
}
}
catch (IndexOutOfRangeException)
{
}
finally
{
}
//int max = titles.Count;
//if (artists.Count != 0 && max > artists.Count)
// max = artists.Count;
//if (genres.Count != 0 && max > genres.Count)
// max = genres.Count;
if (numTracks > 0)
{
string mainTitle = (titles.Count > 0) ? titles[0] : null;
string mainArtist = (artists.Count > 0) ? artists[0] : null;
string mainGenre = (genres.Count > 0) ? genres[0] : null;
for (int i = 1; i <= numTracks; i++)
{
Track track = new Track();
track.Index = i;
try
{
if (titles.Count > i ||
titles.Count > i ||
titles.Count > i)
{
if (titles.Count > i)
{
track.Title = titles[i];
}
if (artists.Count > i)
{
track.Artist = artists[i];
}
if (genres.Count > i)
{
track.Genre = genres[i];
}
if (!string.IsNullOrEmpty(mainTitle))
{
track.Album = mainTitle;
}
if (string.IsNullOrEmpty(track.Artist) &&
!string.IsNullOrEmpty(mainArtist))
{
track.Artist = mainArtist;
}
}
}
catch { }
tracks.Add(track);
}
}
return(tracks);
}
