ch.randelshofer.activation
Class RIFFRecognizer

java.lang.Object
  ch.randelshofer.activation.RIFFRecognizer

All Implemented Interfaces:

Recognizer

public class RIFFRecognizer
extends java.lang.Object
implements Recognizer

This recognizer can identify RIFF files.

Version:

1.0 2005-01-09 Created.

Author:

Werner Randelshofer, Hausmatt 10, CH-6405 Immensee, Switzerland.

Field Summary

Fields inherited from interface ch.randelshofer.activation.Recognizer

CONTENT_TYPE_OCTET_STREAM, CONTENT_TYPE_UNKNOWN

Method Summary

java.lang.String	getContentType(byte[] dataSnippet) Return the base MIME Type of this data.
static RIFFRecognizer	getInstance()
int	getMinimalDeterminableDataLength() Return the number of bytes needed to determine the content type.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static RIFFRecognizer getInstance()

getMinimalDeterminableDataLength

public int getMinimalDeterminableDataLength()

Return the number of bytes needed to determine the content type.

Specified by:

getMinimalDeterminableDataLength in interface Recognizer

getContentType

public java.lang.String getContentType(byte[] dataSnippet)

Return the base MIME Type of this data. This method is expected to ALWAYS return a valid (non-null) MIME Type.

Returns "x-riff/*contenttype*" for RIFF FORM files, where as *contenttype* stands for the FORM type. e.g. returns "x-riff/AVI" for RIFF AVI files.

Specified by:

getContentType in interface Recognizer

Parameters:

dataSnippet - the first few bytes of the data file.

Returns:

MIME Type or application/octet-stream' if content type can not be determined.