marytts.util.data.audio

Class AudioDoubleDataSource

java.lang.Object

marytts.util.data.BaseDoubleDataSource

marytts.util.data.audio.AudioDoubleDataSource

All Implemented Interfaces:

DoubleDataSource

public class AudioDoubleDataSource
extends BaseDoubleDataSource

Author:

Marc Schröder A Double Data Source reading doubles from a Reader, in their string representation. The Reader is expected to contain the text representation of exactly one double per line.

Field Summary

Fields

Modifier and Type	Field and Description
protected AudioInputStream	ais
protected boolean	bAutomaticClippingControl
protected boolean	bigEndian
protected byte[]	byteBuf
static int	BYTEBUFFER_LENGTH
protected int	bytesPerSample
protected boolean	hasMoreData
protected int	samplingRate
protected int	scaleInd
protected double[]	scales

Fields inherited from class marytts.util.data.BaseDoubleDataSource

dataLength, inputSource

Fields inherited from interface marytts.util.data.DoubleDataSource

NOT_SPECIFIED

Constructor Summary

Constructors

Constructor and Description
AudioDoubleDataSource(AudioInputStream ais)
AudioDoubleDataSource(AudioInputStream ais, boolean isAutomaticClippingControl) Initialise this double data source with the AudioInputStream from which samples can be read.

Method Summary

Methods

Modifier and Type	Method and Description
int	available() The number of doubles that can currently be read from this double data source without blocking.
AudioFormat	getAudioFormat()
int	getData(double[] target, int targetPos, int length) Try to get length doubles from this DoubleDataSource, and copy them into target, starting from targetPos.
long	getDataLength() Get the total length of the data in this data source, if available.
int	getSamplingRate() Get the sampling rate of the audio data.
boolean	hasMoreData() Whether or not any more data can be read from this data source.

Methods inherited from class marytts.util.data.BaseDoubleDataSource

getAllData, getData, getData

Methods inherited from class java.lang.Object

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

Field Detail

BYTEBUFFER_LENGTH

public static final int BYTEBUFFER_LENGTH

See Also:

Constant Field Values

ais

protected AudioInputStream ais

byteBuf

protected byte[] byteBuf

samplingRate

protected int samplingRate

bytesPerSample

protected int bytesPerSample

bigEndian

protected boolean bigEndian

hasMoreData

protected boolean hasMoreData

bAutomaticClippingControl

protected boolean bAutomaticClippingControl

scales

protected double[] scales

scaleInd

protected int scaleInd

Constructor Detail

AudioDoubleDataSource

public AudioDoubleDataSource(AudioInputStream ais,
                     boolean isAutomaticClippingControl)

Initialise this double data source with the AudioInputStream from which samples can be read.

Parameters:

ais - ais

isAutomaticClippingControl - isAutomaticClippingControl

Throws:

IllegalArgumentException - if the audio input stream does not have 8, 16 or 24 bits per sample.

AudioDoubleDataSource

public AudioDoubleDataSource(AudioInputStream ais)

Method Detail

getSamplingRate

public int getSamplingRate()

Get the sampling rate of the audio data.

Returns:

the sampling rate

getAudioFormat

public AudioFormat getAudioFormat()

getData

public int getData(double[] target,
          int targetPos,
          int length)

Try to get length doubles from this DoubleDataSource, and copy them into target, starting from targetPos. This is the core method getting the data. Subclasses may want to override this method. If an exception occurs reading from the underlying reader, or converting data to double, the method will print a stack trace to standard error, but otherwise will silently stop and behave as if all data was read.

Specified by:

getData in interface DoubleDataSource

Overrides:

getData in class BaseDoubleDataSource

Parameters:

target - the double array to write into

targetPos - position in target where to start writing

length - the amount of data requested

Returns:

the amount of data actually delivered. If the returned value is less than length, only that many data items have been copied into target; further calls will return 0 and not copy anything.

hasMoreData

public boolean hasMoreData()

Whether or not any more data can be read from this data source.

Specified by:

hasMoreData in interface DoubleDataSource

Overrides:

hasMoreData in class BaseDoubleDataSource

Returns:

true if another call to getData() will return data, false otherwise.

available

public int available()

The number of doubles that can currently be read from this double data source without blocking. This number can change over time.

Specified by:

available in interface DoubleDataSource

Overrides:

available in class BaseDoubleDataSource

Returns:

the number of doubles that can currently be read without blocking

getDataLength

public long getDataLength()

Description copied from class: BaseDoubleDataSource

Get the total length of the data in this data source, if available. For a BufferedDoubleDataSource created from a double[], the data length is available.

Specified by:

getDataLength in interface DoubleDataSource

Overrides:

getDataLength in class BaseDoubleDataSource

Returns:

the number of doubles that can be read from this data source, or DoubleDataSource.NOT_SPECIFIED if unknown.