public Hashes CreateFingerprintsFromAudioSamples(AudioSamples samples, FingerprintConfiguration configuration)
{
var spectrumFrames = spectrumService.CreateLogSpectrogram(samples, configuration.SpectrogramConfig);
var hashes = CreateOriginalFingerprintsFromFrames(spectrumFrames, configuration)
.AsParallel()
.ToList()
.Select(fingerprint => lshAlgorithm.Hash(fingerprint, configuration.HashingConfig))
.ToList();
return(new Hashes(hashes, samples.Duration, MediaType.Audio, samples.RelativeTo, new[] { samples.Origin }));
}
private List <HashedFingerprint> HashFingerprints(IEnumerable <Fingerprint> fingerprints, FingerprintConfiguration configuration)
{
var hashedFingerprints = new ConcurrentBag <HashedFingerprint>();
Parallel.ForEach(fingerprints, (fingerprint, state, index) =>
{
var hashedFingerprint = lshAlgorithm.Hash(fingerprint, configuration.HashingConfig, configuration.Clusters);
hashedFingerprints.Add(hashedFingerprint);
});
return(hashedFingerprints.ToList());
}
private List <HashedFingerprint> HashFingerprints(IEnumerable <Fingerprint> fingerprints)
{
var hashedFingerprints = new ConcurrentBag <HashedFingerprint>();
Parallel.ForEach(
fingerprints,
(fingerprint, state, index) =>
{
var hashedFingerprint = lshAlgorithm.Hash(
fingerprint,
FingerprintConfiguration.HashingConfig.NumberOfLSHTables,
FingerprintConfiguration.HashingConfig.NumberOfMinHashesPerTable);
hashedFingerprints.Add(hashedFingerprint);
});
return(hashedFingerprints.ToList());
}
private List <HashData> HashFingerprints(IEnumerable <bool[]> fingerprints)
{
var hashDatas = new ConcurrentBag <HashData>();
Parallel.ForEach(
fingerprints,
fingerprint =>
{
var hashData = lshAlgorithm.Hash(
fingerprint,
FingerprintConfiguration.NumberOfLSHTables,
FingerprintConfiguration.NumberOfMinHashesPerTable);
hashDatas.Add(hashData);
});
return(hashDatas.ToList());
}