org.esau.ptarmigan.impl.filter
Class MPEGFilter

java.lang.Object
  |
  +--org.xml.sax.helpers.XMLFilterImpl
        |
        +--org.esau.ptarmigan.impl.filter.BaseFilter
              |
              +--org.esau.ptarmigan.impl.filter.BinaryFilter
                    |
                    +--org.esau.ptarmigan.impl.filter.MPEGFilter

All Implemented Interfaces:

ByteStreamSource, org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler, org.xml.sax.XMLFilter, org.xml.sax.XMLReader

public final class MPEGFilter

extends BinaryFilter

Extract metadata from MPEG frame data, if present

TODO: add VBR calculation

Reference:

http://www.dv.co.yu/mpgscript/mpeghdr.htm

Version:

$Revision: 1.6 $ $Date: 2002/10/03 20:56:11 $

Author:

Reed Esau

Constructor Summary

MPEGFilter()

Method Summary

void	doParse() SAX-Invoked parse of a 'document' from an input stream.

Methods inherited from class org.esau.ptarmigan.impl.filter.BinaryFilter

counter, fastForward, read, read, read, readCharBE, readCharLE, readInt16BE, readInt16LE, readInt24BE, readInt24LE, readInt32BE, readInt32LE, remaining, rewind, setCounterLimit, skip

Methods inherited from class org.esau.ptarmigan.impl.filter.BaseFilter

characters, getMediaProperties, parse, setMediaProperties

Methods inherited from class org.xml.sax.helpers.XMLFilterImpl

endDocument, endElement, endPrefixMapping, error, fatalError, getContentHandler, getDTDHandler, getEntityResolver, getErrorHandler, getFeature, getParent, getProperty, ignorableWhitespace, notationDecl, parse, processingInstruction, resolveEntity, setContentHandler, setDocumentLocator, setDTDHandler, setEntityResolver, setErrorHandler, setFeature, setParent, setProperty, skippedEntity, startDocument, startElement, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

MPEGFilter

public MPEGFilter()
           throws org.xml.sax.SAXException

Method Detail

doParse

public void doParse()
             throws org.xml.sax.SAXException,
                    java.io.IOException,
                    java.text.ParseException

SAX-Invoked parse of a 'document' from an input stream.

Read available bytes to try to find consecutive MPEG frames. If successful, we'll position at the start of the first one.

If not successful, we'll reset() the input stream.