marytts.util.data

Class BlockwiseDoubleDataSource

java.lang.Object

marytts.util.data.BaseDoubleDataSource

marytts.util.data.BufferedDoubleDataSource

marytts.util.data.BlockwiseDoubleDataSource

All Implemented Interfaces:

DoubleDataSource

Direct Known Subclasses:

FIRFilter.FIROutput, FrameOverlapAddSource

public class BlockwiseDoubleDataSource
extends BufferedDoubleDataSource

Author:

Marc Schröder

Field Summary

Fields

Modifier and Type	Field and Description
protected int	blockSize

Fields inherited from class marytts.util.data.BufferedDoubleDataSource

buf, dataProcessor, DEFAULT_BUFFERSIZE, readPos, 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
BlockwiseDoubleDataSource(DoubleDataSource inputSource, int blockSize)

Method Summary

Methods

Modifier and Type	Method and Description
protected int	getBlockSize() Provide the size of the next block.
protected void	prepareBlock() Prepare a block of data for output.
protected int	readBlock(double[] target, int pos) Read a block of data.
protected boolean	readIntoBuffer(int minLength) Attempt to get more data from the input source.

Methods inherited from class marytts.util.data.BufferedDoubleDataSource

available, bufferSpaceLeft, compact, currentlyInBuffer, getData, hasMoreData, increaseBufferSize

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

blockSize

protected int blockSize

Constructor Detail

BlockwiseDoubleDataSource

public BlockwiseDoubleDataSource(DoubleDataSource inputSource,
                         int blockSize)

Parameters:

inputSource - inputSource

blockSize - block size

Method Detail

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.

Overrides:

readIntoBuffer in class BufferedDoubleDataSource

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.

getBlockSize

protected int getBlockSize()

Provide the size of the next block. This implementation returns the fixed blocksize given in the constructor. Subclasses may want to override this method.

Returns:

blocksize

prepareBlock

protected void prepareBlock()

Prepare a block of data for output. This method is called before readBlock() is called. This implementation does nothing. Subclasses will want to override this method.

readBlock

protected int readBlock(double[] target,
            int pos)

Read a block of data. This method is called after prepareBlock() is called. This implementation simply reads getBlockSize() data from the inputSource given in the constructor. Subclasses will want to override this method.

Parameters:

target - target

pos - pos

Returns:

number of values written into target from position pos