public SoundFingerprinter(IModelService modelService, string loadFromPath, string debugDirectoryPath)
{
SetDebugPath(debugDirectoryPath);
// if the modelService was passed, use it
if (modelService != null)
{
this.modelService = modelService;
}
else
{
// ... otherwise use the loadFromPath
this.modelService = GetSQLiteDatabaseService(loadFromPath);
}
// and set the rest of the services
this.audioService = new FindSimilarAudioService();
var fingerprintConfig = new ShortSamplesFingerprintConfiguration();
this.spectrumService = new FindSimilarSpectrumService(
fingerprintConfig.SpectrogramConfig,
new LogUtility()
);
this.fingerprintService = new FindSimilarFingerprintService(
spectrumService,
new LocalitySensitiveHashingAlgorithm(new MinHashService(new MaxEntropyPermutations()), new HashConverter()),
new StandardHaarWaveletDecomposition(),
new FastFingerprintDescriptor()
);
this.fingerprintCommandBuilder = new FingerprintCommandBuilder(fingerprintService);
}
public bool StoreAudioFileFingerprintsInStorageForLaterRetrieval(string pathToAudioFile, TrackData track, Verbosity verbosity)
{
if (track == null)
{
return(false);
}
var fingerprintConfig = new ShortSamplesFingerprintConfiguration();
// set verbosity
fingerprintConfig.SpectrogramConfig.Verbosity = verbosity;
try
{
// create hashed fingerprints
var hashedFingerprints = fingerprintCommandBuilder
.BuildFingerprintCommand()
.From(pathToAudioFile)
.WithFingerprintConfig(fingerprintConfig)
.UsingServices(audioService)
.Hash()
.Result;
if (hashedFingerprints.Count > 0)
{
lock (_lockObj)
{
// store track metadata in the datasource
var trackReference = modelService.InsertTrack(track);
// store hashes in the database for later retrieval
modelService.InsertHashDataForTrack(hashedFingerprints, trackReference);
}
return(true);
}
else
{
return(false);
}
}
catch (System.Exception e)
{
// Log
Log.Information(e.Message);
return(false);
}
}