org.datavec.audio.fingerprint

Class FingerprintManager

java.lang.Object

org.datavec.audio.fingerprint.FingerprintManager

public class FingerprintManager
extends java.lang.Object

Audio fingerprint manager, handle fingerprint operations

Constructor Summary

Constructors

Constructor and Description
FingerprintManager() Constructor

Method Summary

Modifier and Type	Method and Description
byte[]	extractFingerprint(Wave wave) Extract fingerprint from Wave object
byte[]	getFingerprintFromFile(java.lang.String fingerprintFile) Get bytes from fingerprint file
byte[]	getFingerprintFromInputStream(java.io.InputStream inputStream) Get bytes from fingerprint inputstream
static int	getNumFrames(byte[] fingerprint) Number of frames in a fingerprint Each frame lengths 8 bytes Usually there is more than one point in each frame, so it cannot simply divide the bytes length by 8 Last 8 byte of thisFingerprint is the last frame of this wave First 2 byte of the last 8 byte is the x position of this wave, i.e.
void	saveFingerprintAsFile(byte[] fingerprint, java.lang.String filename) Save fingerprint to a file

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FingerprintManager

public FingerprintManager()

Constructor

Method Detail

extractFingerprint

public byte[] extractFingerprint(Wave wave)

Extract fingerprint from Wave object

Parameters:

wave - Wave Object to be extracted fingerprint

Returns:

fingerprint in bytes

getFingerprintFromFile

public byte[] getFingerprintFromFile(java.lang.String fingerprintFile)

Get bytes from fingerprint file

Parameters:

fingerprintFile - fingerprint filename

Returns:

fingerprint in bytes

getFingerprintFromInputStream

public byte[] getFingerprintFromInputStream(java.io.InputStream inputStream)

Get bytes from fingerprint inputstream

Parameters:

inputStream - fingerprint inputstream

Returns:

fingerprint in bytes

saveFingerprintAsFile

public void saveFingerprintAsFile(byte[] fingerprint,
                                  java.lang.String filename)

Save fingerprint to a file

Parameters:

fingerprint - fingerprint bytes

filename - fingerprint filename

See Also:

file saved

getNumFrames

public static int getNumFrames(byte[] fingerprint)

Number of frames in a fingerprint Each frame lengths 8 bytes Usually there is more than one point in each frame, so it cannot simply divide the bytes length by 8 Last 8 byte of thisFingerprint is the last frame of this wave First 2 byte of the last 8 byte is the x position of this wave, i.e. (number_of_frames-1) of this wave

Parameters:

fingerprint - fingerprint bytes

Returns:

number of frames of the fingerprint