org.mapsforge.map.writer

Class DeltaEncoder

java.lang.Object

org.mapsforge.map.writer.DeltaEncoder

public final class DeltaEncoder
extends Object

Provides delta or double delta encoding of lists of integers.

Method Summary

Methods

Modifier and Type	Method and Description
static List<WayDataBlock>	encode(List<WayDataBlock> blocks, Encoding encoding) Encodes a list of WayDataBlock objects with the given encoding scheme.
static int	simulateSerialization(List<WayDataBlock> blocks) Computes the size in bytes for storing a list of WayDataBlock objects as unsigned var-bytes.

Methods inherited from class java.lang.Object

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

Method Detail

encode

public static List<WayDataBlock> encode(List<WayDataBlock> blocks,
                        Encoding encoding)

Encodes a list of WayDataBlock objects with the given encoding scheme.

Parameters:

blocks - List of WayDataBlock objects to be encoded.

encoding - The Encoding which is used.

Returns:

A new list of new WayDataBlock objects encoded with the given encoding. The original list is returned in case the encoding equals NONE.

simulateSerialization

public static int simulateSerialization(List<WayDataBlock> blocks)

Computes the size in bytes for storing a list of WayDataBlock objects as unsigned var-bytes.

Parameters:

blocks - the blocks which should be encoded

Returns:

the number of bytes needed for the encoding