rawbinaryimagereader.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<DT><B>Returns:</B><DD>The expected range of values.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - If an error occurs reading the data information from the input source.</DL>
</DD>
</DL>
<HR>

<A NAME="transform(double)"><!-- --></A><H3>
transform</H3>
<PRE>
protected double <B>transform</B>(double&nbsp;value)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Transform a value. This method is invoked automatically for every pixel
 value during reading, in order to give subclasses a chance to perform
 some data conversion on the fly. The default implementation compare
 <code>value</code> to the pad value (as specified in <A HREF="../../../../org/geotools/image/io/RawBinaryImageReader.Spi.html#padValue"><CODE>RawBinaryImageReader.Spi.padValue</CODE></A>)
 and returns <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Double.html#NaN" title="class or interface in java.lang"><CODE>Double.NaN</CODE></A> if both values are equals. Otherwise,
 <code>value</code> is returned unchanged.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getStreamSampleModel(int, javax.imageio.ImageReadParam)"><!-- --></A><H3>
getStreamSampleModel</H3>
<PRE>
protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/SampleModel.html" title="class or interface in java.awt.image">SampleModel</A> <B>getStreamSampleModel</B>(int&nbsp;imageIndex,
                                           <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageReadParam.html" title="class or interface in javax.imageio">ImageReadParam</A>&nbsp;param)
                                    throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Returns the stream sample model (the sample model used to encode pixel into the stream).
 The default implementation query <A HREF="../../../../org/geotools/image/io/RawBinaryImageReadParam.html#getStreamSampleModel()"><CODE>RawBinaryImageReadParam.getStreamSampleModel()</CODE></A>
 if the supplied parameters is an instance of <A HREF="../../../../org/geotools/image/io/RawBinaryImageReadParam.html" title="class in org.geotools.image.io"><CODE>RawBinaryImageReadParam</CODE></A>. Default
 values are provided through the following methods: <A HREF="../../../../org/geotools/image/io/SimpleImageReader.html#getNumBands(int)"><CODE>SimpleImageReader.getNumBands(int)</CODE></A>, <A HREF="../../../../org/geotools/image/io/RawBinaryImageReader.html#getRawDataType(int)"><CODE>getRawDataType(int)</CODE></A>,
 <A HREF="../../../../org/geotools/image/io/SimpleImageReader.html#getRawImageType(int)"><CODE>SimpleImageReader.getRawImageType(int)</CODE></A> and <A HREF="../../../../org/geotools/image/io/RawBinaryImageReader.html#getExpectedRange(int, int)"><CODE>getExpectedRange(int, int)</CODE></A>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>imageIndex</CODE> - The index of the image to be retrieved.<DD><CODE>param</CODE> - Parameters used to control the reading process, or null.
<DT><B>Returns:</B><DD>The stream sample model.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an input operation failed.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/IIOException.html" title="class or interface in javax.imageio">IIOException</A></CODE> - if <code>param</code> do not contains the expected information.</DL>
</DD>
</DL>
<HR>

<A NAME="getDefaultReadParam()"><!-- --></A><H3>
getDefaultReadParam</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageReadParam.html" title="class or interface in javax.imageio">ImageReadParam</A> <B>getDefaultReadParam</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Returns a default <code>ImageReadParam</code>
 object appropriate for this format.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="read(int, javax.imageio.ImageReadParam)"><!-- --></A><H3>
read</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/BufferedImage.html" title="class or interface in java.awt.image">BufferedImage</A> <B>read</B>(int&nbsp;imageIndex,
                          <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageReadParam.html" title="class or interface in javax.imageio">ImageReadParam</A>&nbsp;param)
                   throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Reads the image indexed by <code>imageIndex</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>imageIndex</CODE> - The index of the image to be retrieved.<DD><CODE>param</CODE> - Parameters used to control the reading process, or null.
<DT><B>Returns:</B><DD>The desired portion of the image.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an input operation failed.</DL>
</DD>
</DL>
<HR>

<A NAME="getDestination(int, javax.imageio.ImageReadParam)"><!-- --></A><H3>
getDestination</H3>
<PRE>
protected final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/BufferedImage.html" title="class or interface in java.awt.image">BufferedImage</A> <B>getDestination</B>(int&nbsp;imageIndex,
                                             <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageReadParam.html" title="class or interface in javax.imageio">ImageReadParam</A>&nbsp;param)
                                      throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Returns the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/BufferedImage.html" title="class or interface in java.awt.image"><CODE>BufferedImage</CODE></A> to which decoded pixel data should
 be written. The image is determined by inspecting the supplied <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageReadParam.html" title="class or interface in javax.imageio"><CODE>ImageReadParam</CODE></A> if it is non-null, as in the <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageReader.html#getDestination(javax.imageio.ImageReadParam, java.util.Iterator, int, int)" title="class or interface in javax.imageio"><CODE>ImageReader.getDestination(...)</CODE></A> method. If the parameter is an instance
 of <A HREF="../../../../org/geotools/image/io/RawBinaryImageReadParam.html" title="class in org.geotools.image.io"><CODE>RawBinaryImageReadParam</CODE></A>, then this method will use its size
 and data type information for constructing the image.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>imageIndex</CODE> - The index of the image to be read.<DD><CODE>param</CODE> - an <code>ImageReadParam</code> to be used to get
         the destination image or image type, or <code>null</code>.
<DT><B>Returns:</B><DD>The <code>BufferedImage</code> to which decoded pixel
         data should be written.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <code>imageIndex</code>
         is out of bounds.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if no source has been set with
         <A HREF="../../../../org/geotools/image/io/RawBinaryImageReader.html#setInput(java.lang.Object, boolean, boolean)"><CODE>setInput(java.lang.Object, boolean, boolean)</CODE></A>.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an error occur while fetching informations
         from the stream.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/IIOException.html" title="class or interface in javax.imageio">IIOException</A></CODE> - if the <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/ImageTypeSpecifier.html" title="class or interface in javax.imageio"><CODE>ImageTypeSpecifier</CODE></A> specified by
         <code>param</code> does not match any of the legal ones.</DL>
</DD>
</DL>
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