private static void Indexing(DataBase dataBase, byte[] audio)
{
Console.WriteLine("Matching the song...");
dataBase.UseFilter = false;
TimeInterval timeInterval = new TimeInterval();
int id = dataBase.GetBestHit(audio, 16);
double intervalInSecond = timeInterval.GetDurationInSecond();
Console.WriteLine("--------------------");
Console.Write("Final Match ({0}s):\t", intervalInSecond);
if (id < 0)
Console.WriteLine("No match!");
else
Console.WriteLine(dataBase.GetNameByID(id));
Console.WriteLine("--------------------");
}
public void SaveInBinary(string fileName)
{
Console.WriteLine("Saving to binary file: {0}", fileName);
try
{
TimeInterval ti = new TimeInterval();
using (FileStream fs = new FileStream(fileName, FileMode.OpenOrCreate))
{
BinaryWriter bw = new BinaryWriter(fs);
bw.Write(BINARY_HEADER);
bw.Write(songNames.Count);
foreach (string name in songNames)
{
bw.Write(name);
}
bw.Write(hashMap.Count);
Dictionary<long, List<DataPoint>>.Enumerator en = hashMap.GetEnumerator();
while (en.MoveNext())
{
KeyValuePair<long, List<DataPoint>> current = en.Current;
bw.Write(current.Key);
bw.Write(current.Value.Count);
foreach (DataPoint dataPoint in current.Value)
{
bw.Write(dataPoint.Time);
bw.Write(dataPoint.SongID);
}
}
bw.Flush();
}
Console.WriteLine("Done. {0}s", ti.GetDurationInSecond());
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public void Save(string fileName)
{
Console.WriteLine("Saving to text file: {0}", fileName);
try
{
TimeInterval ti = new TimeInterval();
using (StreamWriter sw = new StreamWriter(fileName, false))
{
sw.WriteLine(songNames.Count);
foreach (string name in songNames)
{
sw.WriteLine(name);
}
sw.WriteLine(hashMap.Count);
Dictionary<long, List<DataPoint>>.Enumerator en = hashMap.GetEnumerator();
while (en.MoveNext())
{
KeyValuePair<long, List<DataPoint>> current = en.Current;
sw.Write(current.Key);
foreach (DataPoint dataPoint in current.Value)
{
sw.Write(string.Format("\t{0},{1}", dataPoint.Time, dataPoint.SongID));
}
sw.WriteLine();
}
sw.Flush();
}
Console.WriteLine("Done. {0}s", ti.GetDurationInSecond());
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public void LoadFromBinary(string fileName)
{
Console.WriteLine("Loading data base from binary file: {0} ...", fileName);
try
{
TimeInterval loadTimeInterval = new TimeInterval();
using (FileStream fr = new FileStream(fileName, FileMode.Open))
{
BinaryReader br = new BinaryReader(fr);
songNames.Clear();
int header = br.ReadInt32();
if (header != BINARY_HEADER)
{
throw new InvalidDataException("Invalid binary index file!");
}
int nameCount = br.ReadInt32();
for (int i = 0; i < nameCount; i++)
{
string name = br.ReadString();
songNames.Add(name);
if (CheckDuplicate)
songNameSet.Add(name);
}
hashMap.Clear();
int hashCount = br.ReadInt32();
for (int i = 0; i < hashCount; i++)
{
long key = br.ReadInt64();
int count = br.ReadInt32();
List<DataPoint> pointList = new List<DataPoint>(count);
for (int j = 0; j < count; j++)
{
short time = br.ReadInt16();
short songID = br.ReadInt16();
DataPoint dataPoint = new DataPoint(time, songID);
pointList.Add(dataPoint);
}
hashMap.Add(key, pointList);
}
}
Console.WriteLine("Done! {0}s", loadTimeInterval.GetDurationInSecond());
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.WriteLine(e.StackTrace);
}
}
public void Load(string fileName)
{
Console.WriteLine("Loading data base from file: {0} ...", fileName);
try
{
TimeInterval loadTimeInterval = new TimeInterval();
using (StreamReader sr = new StreamReader(fileName))
{
songNames.Clear();
int nameCount = int.Parse(sr.ReadLine());
for (int i = 0; i < nameCount; i++)
{
string name = sr.ReadLine();
songNames.Add(name);
if (CheckDuplicate)
songNameSet.Add(name);
}
hashMap.Clear();
int hashCount = int.Parse(sr.ReadLine());
for (int i = 0; i < hashCount; i++)
{
string record = sr.ReadLine();
string[] items = record.Split('\t');
long hash = long.Parse(items[0]);
List<DataPoint> pointList = new List<DataPoint>();
for (int j = 1; j < items.Length; j++)
{
string[] values = items[j].Split(',');
short time = short.Parse(values[0]);
short songID = short.Parse(values[1]);
DataPoint dataPoint = new DataPoint(time, songID);
pointList.Add(dataPoint);
}
hashMap.Add(hash, pointList);
}
}
Console.WriteLine("Done! {0}s", loadTimeInterval.GetDurationInSecond());
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public static void SimpleTest(string indexFile, IHashMaker hashMaker, bool bQuiet)
{
bool bTextFile = IsTextFile(indexFile);
ImprovedDataBase dataBase = new ImprovedDataBase(hashMaker);
if (bTextFile)
{
//dataBase.Load(indexFile);
}
else
dataBase.LoadFromBinary(indexFile);
dataBase.Quiet = bQuiet;
int seconds = 10;
while (true)
{
Console.WriteLine("Press any key to identify a new song, press ESC to exit.\n");
ConsoleKeyInfo keyInfo = Console.ReadKey();
if (keyInfo.Key == ConsoleKey.Escape)
break;
byte[] audio = null;
Console.WriteLine("Start recording audio from mic ...", seconds);
MicRecorder recorder = new MicRecorder();
recorder.Seconds = seconds;
recorder.RequestStop = false;
recorder.RecStart();
audio = recorder.GetAudioData();
Console.WriteLine();
//Console.WriteLine("Length of audio data is {0}.", audio.Length);
dataBase.UseFilter = false;
TimeInterval timeInterval = new TimeInterval();
int id = dataBase.GetBestHit(audio, 16);
double intervalInSecond = timeInterval.GetDurationInSecond();
Console.WriteLine("--------------------");
Console.Write("Final Match ({0}s):\t", intervalInSecond);
if (id < 0)
Console.WriteLine("No match!");
else
Console.WriteLine(dataBase.GetNameByID(id));
Console.WriteLine("--------------------");
//dataBase.UseFilter = true;
//timeInterval.Reset();
//id = dataBase.GetBestHit(audio, 16);
//intervalInSecond = timeInterval.GetDurationInSecond();
//Console.WriteLine("--------------------");
//Console.Write("Final Match ({0}s):\t", intervalInSecond);
//if (id < 0)
// Console.WriteLine("No match!");
//else
// Console.WriteLine(dataBase.GetNameByID(id));
//Console.WriteLine("--------------------");
}
}
