/*
* Liest alle vorhandenen Informationen von der CD.
* Liefert FALSE zurück, wenn mindestens ein Lied der CD kein AUDIO-Track ist.
*/
bool ReadInformation()
{
numberOfTracks = GetNumberOfTracks();
cdInfo.TotalLength = GetTotalLength();
if (cdInfo.TotalLength == 0 || numberOfTracks == 0)
{
return(false);
}
CDInfo.Tracks.Clear();
cdInfo.TotalLength = 0;
for (int i = 0; i < numberOfTracks; i++)
{
int startTime = GetTrackPosition(i);
CDInfoTrack newItem = new CDInfoTrack();
newItem.StartTime = startTime;
// Die Funktion MCI_STATUS_LENGTH liefert manchmal eine Millisekunde zuviel zurück
// (vermutlich rundungsprobleme). Deshalb berechnen wir uns die Länge der Tracks
// selbst (außer beim letzten Track, da geht es nicht anders).
if (i == numberOfTracks - 1)
{
newItem.Length = GetTrackLength(i);
}
else
{
int startTimeNext;
startTimeNext = GetTrackPosition(i + 1);
newItem.Length = startTimeNext - startTime;
}
newItem.TrackType = GetTrackType(i);
cdInfo.TotalLength += newItem.Length;
CDInfo.Tracks.Add(newItem);
}
cdInfo.Identity = GetIdentity();
return(true);
}
/// <summary>
/// Die Informationen (TOC) einer CD auslesen
/// </summary>
public CDInfo ReadCDInformation(char driveLetter)
{
if (Settings.Current.UseMCI)
{
return(ReadCDInformationMCI(driveLetter));
}
CDInfo mciCDInfo = ReadCDInformationMCI(driveLetter);
if (mciCDInfo.Tracks.Any(x => x.TrackType != TrackType.Audio)) // Bei einer Daten-CD nehmen wir MCI
{
return(mciCDInfo);
}
string drive = string.Format("{0}:", driveLetter);
FMOD.Sound cdSound = null;
FMOD.RESULT result = system.createStream(drive, FMOD.MODE.OPENONLY, ref cdSound);
if (result != FMOD.RESULT.OK || cdSound == null)
{
return(mciCDInfo);
}
int numberOfTracks = 0;
cdSound.getNumSubSounds(ref numberOfTracks);
FMOD.CDTOC cdToc = new FMOD.CDTOC();
int numtags = 0;
int numtagsupdated = 0;
cdSound.getNumTags(ref numtags, ref numtagsupdated);
for (int i = 0; i < numtags; i++)
{
FMOD.TAG tag = new FMOD.TAG();
if (cdSound.getTag(null, i, ref tag) != FMOD.RESULT.OK)
{
break;
}
if (tag.datatype == FMOD.TAGDATATYPE.CDTOC)
{
cdToc = (FMOD.CDTOC)Marshal.PtrToStructure(tag.data, typeof(FMOD.CDTOC));
break;
}
}
CDInfo cdInfo = new CDInfo();
int trackNr = 0;
for (; trackNr < numberOfTracks; trackNr++)
{
CDInfoTrack track = new CDInfoTrack();
track.StartTime = (((cdToc.min[trackNr] * 60 + cdToc.sec[trackNr]) * 75 + cdToc.frame[trackNr]) * 1000 + 74) / 75;
if (trackNr > 0)
{
cdInfo.Tracks[trackNr - 1].Length = track.StartTime - cdInfo.Tracks[trackNr - 1].StartTime;
}
track.TrackType = TrackType.Audio;
cdInfo.Tracks.Add(track);
}
cdInfo.TotalLength = (((cdToc.min[numberOfTracks] * 60 + cdToc.sec[numberOfTracks]) * 75 + cdToc.frame[numberOfTracks]) * 1000 + 74) / 75;
cdInfo.Tracks[trackNr - 1].Length = cdInfo.TotalLength - cdInfo.Tracks[trackNr - 1].StartTime;
cdSound.release();
/*StringBuilder volumeName = new StringBuilder(1000);
* StringBuilder fileSystemNameBuffer = new StringBuilder(1000);
* uint serialNumber = 0;
* uint maximumComponentLength = 0;
* uint fileSystemFlags = 0;
* GetVolumeInformation(drive, volumeName, 1000, ref serialNumber, ref maximumComponentLength, ref fileSystemFlags, fileSystemNameBuffer, 1000);
*
* cdInfo.Identity = serialNumber.ToString();*/
cdInfo.Identity = mciCDInfo.Identity;
return(cdInfo);
}
