public void DeleteTrack(string trackId)
{
var track = TrackDao.ReadTrackById(trackId);
if (track == null)
{
return;
}
var trackReference = track.TrackReference;
SubFingerprintDao.DeleteSubFingerprintsByTrackReference(trackReference);
TrackDao.DeleteTrack(trackReference);
}
public TrackInfo ReadTrackById(string trackId)
{
var trackData = TrackDao.ReadTrackById(trackId);
if (trackData == null)
{
return(null);
}
var metaFields = CopyMetaFields(trackData.MetaFields);
metaFields.Add("TrackLength", $"{trackData.Length: 0.000}");
return(new TrackInfo(trackData.Id, trackData.Title, trackData.Artist, metaFields, trackData.MediaType));
}
public AVHashes ReadHashesByTrackId(string trackId)
{
var track = TrackDao.ReadTrackById(trackId);
if (track == null)
{
return(AVHashes.Empty);
}
var fingerprints = SubFingerprintDao
.ReadHashedFingerprintsByTrackReference(track.TrackReference)
.Select(subFingerprint => new HashedFingerprint(subFingerprint.Hashes, subFingerprint.SequenceNumber, subFingerprint.SequenceAt, subFingerprint.OriginalPoint));
return(new AVHashes(new Hashes(fingerprints, track.Length, MediaType.Audio), Hashes.GetEmpty(MediaType.Video)));
}
public void Insert(TrackInfo trackInfo, AVHashes hashes)
{
if (trackInfo.MediaType.HasFlag(MediaType.Video) || hashes.Audio is null)
{
throw new NotSupportedException(VIDEO_NOT_SUPPORTED_MESSAGE);
}
var audioHashes = hashes.Audio;
var fingerprints = audioHashes.ToList();
if (fingerprints.Count == 0)
{
return;
}
var trackData = TrackDao.InsertTrack(trackInfo, audioHashes.DurationInSeconds);
SubFingerprintDao.InsertHashDataForTrack(audioHashes, trackData.TrackReference);
}
public void UpdateTrack(TrackInfo trackInfo)
{
if (trackInfo.MediaType.HasFlag(MediaType.Video))
{
throw new NotSupportedException(VIDEO_NOT_SUPPORTED_MESSAGE);
}
var track = TrackDao.ReadTrackById(trackInfo.Id);
if (track == null)
{
throw new ArgumentException($"Could not find track {trackInfo.Id} to update", nameof(trackInfo.Id));
}
var subFingerprints = SubFingerprintDao.ReadHashedFingerprintsByTrackReference(track.TrackReference);
var hashes = new Hashes(subFingerprints.Select(subFingerprint => new HashedFingerprint(subFingerprint.Hashes, subFingerprint.SequenceNumber, subFingerprint.SequenceAt, subFingerprint.OriginalPoint)), track.Length, track.MediaType);
DeleteTrack(trackInfo.Id);
Insert(trackInfo, new AVHashes(hashes, null));
}
public LMDBModelService(string pathToDatabase, LMDBConfiguration configuration = null)
{
databaseContext = new DatabaseContext(pathToDatabase, configuration ?? new LMDBConfiguration());
TrackDao = new TrackDao(databaseContext);
SubFingerprintDao = new SubFingerprintDao(databaseContext);
}
public IEnumerable <string> GetTrackIds()
{
return(TrackDao.GetTrackIds());
}
public IEnumerable <TrackData> ReadTracksByReferences(IEnumerable <IModelReference> references)
{
return(TrackDao.ReadTracksByReferences(references));
}
