marytts.util.data

Class BufferedDoubleDataSource

java.lang.Object

marytts.util.data.BaseDoubleDataSource

marytts.util.data.BufferedDoubleDataSource

All Implemented Interfaces:

DoubleDataSource

Direct Known Subclasses:

BlockwiseDoubleDataSource, DatagramDoubleDataSource, DatagramOverlapDoubleDataSource, ProducingDoubleDataSource, Signal2EnergyConverter

public class BufferedDoubleDataSource
extends BaseDoubleDataSource

Author:

Marc Schröder

Field Summary

Fields

Modifier and Type	Field and Description
protected double[]	buf
protected InlineDataProcessor	dataProcessor
static int	DEFAULT_BUFFERSIZE
protected int	readPos
protected int	writePos

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
BufferedDoubleDataSource(double[] inputData)
BufferedDoubleDataSource(double[] inputData, InlineDataProcessor dataProcessor)
BufferedDoubleDataSource(DoubleDataSource inputSource)
BufferedDoubleDataSource(DoubleDataSource inputSource, InlineDataProcessor dataProcessor)

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.
protected int	bufferSpaceLeft()
protected void	compact() Compact the buffer, so that the data in the buffer starts at the beginning of the underlying array.
int	currentlyInBuffer() Amount of data currently in the buffer.
int	getData(double[] target, int targetPos, int length) Try to get length doubles from this DoubleDataSource, and copy them into target, starting from targetPos.
boolean	hasMoreData() Whether or not any more data can be read from this data source.
protected void	increaseBufferSize(int minSize) Increase the underlying buffer array in size, so that the new size is at least minSize
protected boolean	readIntoBuffer(int minLength) Attempt to get more data from the input source.

Methods inherited from class marytts.util.data.BaseDoubleDataSource

getAllData, getData, getData, getDataLength

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_BUFFERSIZE

public static final int DEFAULT_BUFFERSIZE

See Also:

Constant Field Values

buf

protected double[] buf

readPos

protected int readPos

writePos

protected int writePos

dataProcessor

protected InlineDataProcessor dataProcessor

Constructor Detail

BufferedDoubleDataSource

public BufferedDoubleDataSource(double[] inputData)

BufferedDoubleDataSource

public BufferedDoubleDataSource(double[] inputData,
                        InlineDataProcessor dataProcessor)

BufferedDoubleDataSource

public BufferedDoubleDataSource(DoubleDataSource inputSource)

BufferedDoubleDataSource

public BufferedDoubleDataSource(DoubleDataSource inputSource,
                        InlineDataProcessor dataProcessor)

Method Detail

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.

currentlyInBuffer

public int currentlyInBuffer()

Amount of data currently in the buffer. If hasMoreData() returns true, this number may increase.

Returns:

the number of doubles that can currently be read without recourse to an input source.

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

bufferSpaceLeft

protected int bufferSpaceLeft()

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.

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.

readIntoBuffer

protected boolean readIntoBuffer(int minLength)

Attempt to get more data from the input source. If less than this can be read, the possible amount will be read, but canReadMore() will return false afterwards.

Parameters:

minLength - the amount of data to get from the input source

Returns:

true if the requested amount could be read, false if none or less data could be read.

increaseBufferSize

protected void increaseBufferSize(int minSize)

Increase the underlying buffer array in size, so that the new size is at least minSize

Parameters:

minSize - the minimum new size of the array.

compact

protected void compact()

Compact the buffer, so that the data in the buffer starts at the beginning of the underlying array.