javax.imageio.stream
Class MemoryCacheImageOutputStream

java.lang.Object
  |
  +--javax.imageio.stream.ImageInputStreamImpl
        |
        +--javax.imageio.stream.ImageOutputStreamImpl
              |
              +--javax.imageio.stream.MemoryCacheImageOutputStream

All Implemented Interfaces:

DataInput, DataOutput, ImageInputStream, ImageOutputStream

public class MemoryCacheImageOutputStream

extends ImageOutputStreamImpl

An implementation of ImageOutputStream that writes its output to a regular OutputStream. A memory buffer is used to cache at least the data between the discard position and the current write position. The only constructor takes an OutputStream, so this class may not be used for read/modify/write operations. Reading can occur only on parts of the stream that have already been written to the cache and not yet flushed.

Field Summary

 

Fields inherited from class javax.imageio.stream.ImageInputStreamImpl

bitOffset, byteOrder, flushedPos, streamPos

 

Constructor Summary
MemoryCacheImageOutputStream(OutputStream stream)     Constructs a MemoryCacheImageOutputStream that will write to a given OutputStream.

 

Method Summary
void	close()     Closes this MemoryCacheImageOutputStream.
void	flushBefore(long pos)     Flushes all data prior to the given position to the underlying destination, such as an OutputStream or File.
boolean	isCached()     Returns true since this ImageOutputStream caches data in order to allow seeking backwards.
boolean	isCachedFile()     Returns false since this ImageOutputStream does not maintain a file cache.
boolean	isCachedMemory()     Returns true since this ImageOutputStream maintains a main memory cache.
long	length()     Returns the total length of the stream, if known.
int	read()     Reads a single byte from the stream and returns it as an integer between 0 and 255.
int	read(byte[] b, int off, int len)     Reads up to len bytes from the stream, and stores them into b starting at index off.
void	write(byte[] b, int off, int len)     Writes a sequence of bytes to the stream at the current position.
void	write(int b)     Writes a single byte to the stream at the current position.

 

Methods inherited from class javax.imageio.stream.ImageOutputStreamImpl

flushBits,