org.jcodec.common.io

Class HttpChannel

java.lang.Object

org.jcodec.common.io.HttpChannel

All Implemented Interfaces:

Closeable, AutoCloseable, ByteChannel, Channel, ReadableByteChannel, WritableByteChannel, org.jcodec.common.io.SeekableByteChannel

public class HttpChannel
extends Object
implements org.jcodec.common.io.SeekableByteChannel

This class is part of JCodec ( www.jcodec.org ) This software is distributed under FreeBSD License This class implements a read-only SeekableBytChannel for downloading a HTTP resource. Basically it wraps a URLConnection. It provides random access functionality by closing the connection and re-establishing a new one with HTTP 1.1 Range header to download a stream from a certain offset. This class is the dummiest possible implementation and lacks some important features: - caching; - re-connecting vs reading ahead for forward seeks; - readahead and grouping of the small reads.

Author:

The JCodec project

Constructor Summary

Constructors

Constructor and Description
HttpChannel(URL url)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	isOpen()
long	position()
int	read(ByteBuffer buffer)
org.jcodec.common.io.SeekableByteChannel	setPosition(long newPosition)
long	size()
org.jcodec.common.io.SeekableByteChannel	truncate(long size)
int	write(ByteBuffer buffer)

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpChannel

public HttpChannel(URL url)

Method Detail

position

public long position()
              throws IOException

Specified by:

position in interface org.jcodec.common.io.SeekableByteChannel

Throws:

IOException

setPosition

public org.jcodec.common.io.SeekableByteChannel setPosition(long newPosition)
                                                     throws IOException

Specified by:

setPosition in interface org.jcodec.common.io.SeekableByteChannel

Throws:

IOException

size

public long size()
          throws IOException

Specified by:

size in interface org.jcodec.common.io.SeekableByteChannel

Throws:

IOException

truncate

public org.jcodec.common.io.SeekableByteChannel truncate(long size)
                                                  throws IOException

Specified by:

truncate in interface org.jcodec.common.io.SeekableByteChannel

Throws:

IOException

read

public int read(ByteBuffer buffer)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Throws:

IOException

write

public int write(ByteBuffer buffer)
          throws IOException

Specified by:

write in interface WritableByteChannel

Throws:

IOException

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Channel

Throws:

IOException