/// <summary>
/// Create a Fingerprint and lookup the Recordings
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private async Task <List <Recording> > GetRecordings(string file)
{
var stream = Bass.BASS_StreamCreateFile(file, 0, 0, BASSFlag.BASS_STREAM_DECODE);
var chInfo = Bass.BASS_ChannelGetInfo(stream);
var bufLen = (int)Bass.BASS_ChannelSeconds2Bytes(stream, 120.0);
var buf = new short[bufLen];
var chromaContext = new ChromaContext();
chromaContext.Start(chInfo.freq, chInfo.chans);
var length = Bass.BASS_ChannelGetData(stream, buf, bufLen);
chromaContext.Feed(buf, length / 2);
chromaContext.Finish();
var fingerPrint = chromaContext.GetFingerprint();
Configuration.ClientKey = "mfbgmu2P";
var lookupSvc = new LookupService();
var len = Bass.BASS_ChannelGetLength(stream, BASSMode.BASS_POS_BYTE);
var time = Bass.BASS_ChannelBytes2Seconds(stream, len);
Bass.BASS_StreamFree(stream);
//var result = await lookupSvc.GetAsync(fingerPrint, Convert.ToInt32(time), new[] { "recordingids", "releases", "artists" });
var trackIds = await lookupSvc.GetAsync(fingerPrint, Convert.ToInt32(time), new[] { "recordingids" });
var recordings = new List <Recording>();
foreach (var trackId in trackIds.Results)
{
foreach (var rec in trackId.Recordings)
{
System.Threading.Thread.Sleep(400);
var recording = await Recording.GetAsync(rec.Id, new[] { "releases", "artists", "media", "discids" });
recordings.Add(recording);
}
}
return(recordings);
}
public void Test2SilenceRawFp()
{
short[] zeroes = new short[1024];
ChromaContext ctx = new ChromaContext(ChromaprintAlgorithm.TEST2);
ctx.Start(44100, 1);
for (int i = 0; i < 130; i++)
{
ctx.Feed(zeroes, 1024);
}
ctx.Finish();
int[] fp = ctx.GetRawFingerprint();
Assert.AreEqual(3, fp.Length);
Assert.AreEqual(627964279, fp[0]);
Assert.AreEqual(627964279, fp[1]);
Assert.AreEqual(627964279, fp[2]);
}
public void Test2SilenceFp()
{
short[] zeroes = new short[1024];
ChromaContext ctx = new ChromaContext(ChromaprintAlgorithm.TEST2);
ctx.Start(44100, 1);
for (int i = 0; i < 130; i++)
{
ctx.Feed(zeroes, 1024);
}
;
ctx.Finish();
string fp = ctx.GetFingerprint();
Assert.AreEqual(18, fp.Length);
Assert.AreEqual("AQAAA0mUaEkSRZEGAA", fp);
}
public void Test2SilenceRawFp()
{
short[] zeroes = new short[1024];
ChromaContext ctx = new ChromaContext(ChromaprintAlgorithm.TEST2);
ctx.Start(44100, 1);
for (int i = 0; i < 130; i++)
{
ctx.Feed(zeroes, 1024);
}
ctx.Finish();
int[] fp = ctx.GetRawFingerprint();
Assert.AreEqual(3, fp.Length);
Assert.AreEqual(627964279, fp[0]);
Assert.AreEqual(627964279, fp[1]);
Assert.AreEqual(627964279, fp[2]);
}
public void Test2SilenceFp()
{
short[] zeroes = new short[1024];
ChromaContext ctx = new ChromaContext(ChromaprintAlgorithm.TEST2);
ctx.Start(44100, 1);
for (int i = 0; i < 130; i++)
{
ctx.Feed(zeroes, 1024);
}
ctx.Finish();
string fp = ctx.GetFingerprint();
int hash = ctx.GetFingerprintHash();
Assert.AreEqual(18, fp.Length);
Assert.AreEqual("AQAAA0mUaEkSRZEGAA", fp);
Assert.AreEqual(627964279, hash);
}
/// <summary>
/// Fingerpring the audio and send it to the AcoustID identification service for results.
/// /// </summary>
/// <param name="pathToAudioFile"></param>
/// <returns>The AcoustID identification response object with the audio information if found.</returns>
public async Task <List <LookupResponse> > ProcessAudioFile(Uri pathToAudioFile)
{
short[] auData = LoadAudioFile(pathToAudioFile);
int tSec = (int)TagLib.File.Create(pathToAudioFile.LocalPath).Properties.Duration.TotalSeconds;
ChromaContext ctx = new ChromaContext(ChromaprintAlgorithm.TEST2);
var responces = new List <LookupResponse>();
var commonSamples = new List <int> {
8000, 11025, 16000, 22050, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
};
async Task FingerprintAndLookup(int sample, int channels)
{
try {
ctx.Start(sample, channels);
ctx.Feed(auData, auData.Length);
ctx.Finish();
} catch {
Console.WriteLine("Failed on fingerprint audio sample for " + sample + "hz sampling rate " + channels + "channels.");
}
try {
var lur = await new AcoustID.Web.LookupService().GetAsync(ctx.GetFingerprint(), tSec);
if (lur.Results.Any())
{
responces.Add(lur);
}
} catch {
Console.WriteLine("Failed on query audio sample for " + sample + "hz sampling rate " + channels + "channels.");
}
}
foreach (var sample in commonSamples)
{
await FingerprintAndLookup(sample, 1);
await FingerprintAndLookup(sample, 2);
}
return(responces);
}