jpegformat.html

JMF原版英文说明文档

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<TD><CODE><A HREF="../../../javax/media/Format.html#getDataType()">getDataType</A>, 
<A HREF="../../../javax/media/Format.html#getEncoding()">getEncoding</A></CODE></TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
wait, 
wait, 
wait</CODE></TD>
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<A NAME="DEC_422"><!-- --></A><H3>
DEC_422</H3>
<PRE>
public static final int <B>DEC_422</B></PRE>
<DL>
<DD>JPEG 422 decimation.</DL>
<HR>

<A NAME="DEC_420"><!-- --></A><H3>
DEC_420</H3>
<PRE>
public static final int <B>DEC_420</B></PRE>
<DL>
<DD>JPEG 420 decimation.</DL>
<HR>

<A NAME="DEC_444"><!-- --></A><H3>
DEC_444</H3>
<PRE>
public static final int <B>DEC_444</B></PRE>
<DL>
<DD>JPEG 444 decimation.</DL>
<HR>

<A NAME="DEC_402"><!-- --></A><H3>
DEC_402</H3>
<PRE>
public static final int <B>DEC_402</B></PRE>
<DL>
<DD>JPEG 402 decimation.</DL>
<HR>

<A NAME="DEC_411"><!-- --></A><H3>
DEC_411</H3>
<PRE>
public static final int <B>DEC_411</B></PRE>
<DL>
<DD>JPEG 411 decimation.</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="JPEGFormat()"><!-- --></A><H3>
JPEGFormat</H3>
<PRE>
public <B>JPEGFormat</B>()</PRE>
<DL>
<DD>Constructs a default <CODE>JPEGFormat</CODE> object.</DL>
<HR>

<A NAME="JPEGFormat(java.awt.Dimension, int, java.lang.Class, float, int, int)"><!-- --></A><H3>
JPEGFormat</H3>
<PRE>
public <B>JPEGFormat</B>(java.awt.Dimension&nbsp;size,
                  int&nbsp;maxDataLength,
                  java.lang.Class&nbsp;dataType,
                  float&nbsp;frameRate,
                  int&nbsp;q,
                  int&nbsp;dec)</PRE>
<DL>
<DD>Constructs a <CODE>JPEGFormat</CODE>  with the specified parameters.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>size</CODE> - A <CODE>Dimension</CODE> that specifies the frame size.<DD><CODE>maxDataLength</CODE> - The maximum size of the compressed data array.<DD><CODE>dataType</CODE> - The class type of the data.<DD><CODE>frameRate</CODE> - The frame rate of the video.<DD><CODE>q</CODE> - The JPEG quality factor.
 This is a value from 0 to 100, where 0 is the lowest
 quality and 100 is the highest.<DD><CODE>dec</CODE> - The JPEG decimation used.</DL>
</DD>
</DL>

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<A NAME="getQFactor()"><!-- --></A><H3>
getQFactor</H3>
<PRE>
public int <B>getQFactor</B>()</PRE>
<DL>
<DD>Gets the JPEG quality factor for this <CODE>JPEGFormat</CODE>.<DD><DL>
<DT><B>Returns:</B><DD>An integer in the range 0 to 100, where 0 is the lowest
 quality and 100 is the highest.</DL>
</DD>
</DL>
<HR>

<A NAME="getDecimation()"><!-- --></A><H3>
getDecimation</H3>
<PRE>
public int <B>getDecimation</B>()</PRE>
<DL>
<DD>Gets the decimation of the video.<DD><DL>
<DT><B>Returns:</B><DD>An integer that indicates the decimation of this
 <code>Format</code>:
DEC_422, DEC_420, DEC_444, DEC_402, or DEC_411.</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public java.lang.Object <B>clone</B>()</PRE>
<DL>
<DD>Creates a clone of this <CODE>JPEGFormat</CODE> by copying each format
 attribute to the clone.<DD><DL>
<DT><B>Overrides:</B><DD><A HREF="../../../javax/media/format/VideoFormat.html#clone()">clone</A> in class <A HREF="../../../javax/media/format/VideoFormat.html">VideoFormat</A></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>A clone of this <CODE>JPEGFormat</CODE>.</DL>
</DD>
</DL>
<HR>

<A NAME="copy(javax.media.Format)"><!-- --></A><H3>
copy</H3>
<PRE>
protected void <B>copy</B>(<A HREF="../../../javax/media/Format.html">Format</A>&nbsp;f)</PRE>
<DL>
<DD>Copies  the attributes from the specified <CODE>Format</CODE> into 
 this <CODE>JPEGFormat</CODE>.<DD><DL>
<DT><B>Overrides:</B><DD><A HREF="../../../javax/media/format/VideoFormat.html#copy(javax.media.Format)">copy</A> in class <A HREF="../../../javax/media/format/VideoFormat.html">VideoFormat</A></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>f</CODE> - The <CODE>Format</CODE> to copy the attributes from.</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Gets a <CODE>String</CODE> representation of the attributes of this 
 <code>JPEGFormat</code>. For example: "JPEG, 352x240, ...".<DD><DL>
<DT><B>Overrides:</B><DD><A HREF="../../../javax/media/format/VideoFormat.html#toString()">toString</A> in class <A HREF="../../../javax/media/format/VideoFormat.html">VideoFormat</A></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>A <CODE>String</CODE> that describes the <code>JPEGFormat</code> 
 attributes.</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object&nbsp;format)</PRE>
<DL>
<DD>Compares the specified <CODE>Format</CODE> with this <code>JPEGFormat</code>. 
 Returns <CODE>true</CODE> 
 only if the specified <CODE>Format</CODE> is an <CODE>JPEGFormat</CODE> and 
 all of its attributes are
 identical to this <code>JPEGFormat</code>.<DD><DL>
<DT><B>Overrides:</B><DD><A HREF="../../../javax/media/format/VideoFormat.html#equals(java.lang.Object)">equals</A> in class <A HREF="../../../javax/media/format/VideoFormat.html">VideoFormat</A></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>format</CODE> - The <CODE>Format</CODE> to compare with this one.<DT><B>Returns:</B><DD><CODE>true</CODE> if the specified <CODE>Format</CODE> is the same, 
 <CODE>false</CODE> if it is not.</DL>
</DD>
</DL>
<HR>

<A NAME="matches(javax.media.Format)"><!-- --></A><H3>
matches</H3>
<PRE>
public boolean <B>matches</B>(<A HREF="../../../javax/media/Format.html">Format</A>&nbsp;format)</PRE>
<DL>
<DD>Checks whether or not the specified <CODE>Format</CODE> <EM>matches</EM> 
 this <CODE>JPEGFormat</CODE>.
 Matches only compares the attributes that are defined in the specified 
 <CODE>Format</CODE>,  unspecified attributes are ignored.
 <p>
 The two <CODE>Format</CODE> objects do not have to be of the same class to 
 match.  For example, if "A" are "B" are being compared, a
 match is possible if "A" is derived from "B"
 or "B" is derived from "A". (The compared attributes must still match, or 
 <CODE>matches</CODE> fails.)<DD><DL>
<DT><B>Overrides:</B><DD><A HREF="../../../javax/media/format/VideoFormat.html#matches(javax.media.Format)">matches</A> in class <A HREF="../../../javax/media/format/VideoFormat.html">VideoFormat</A></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>format</CODE> - The <CODE>Format</CODE> to compare with this one.<DT><B>Returns:</B><DD><CODE>true</CODE> if the specified <CODE>Format</CODE> matches this one, 
 <CODE>false</CODE> if it does not.</DL>
</DD>
</DL>
<HR>

<A NAME="intersects(javax.media.Format)"><!-- --></A><H3>
intersects</H3>
<PRE>
public <A HREF="../../../javax/media/Format.html">Format</A> <B>intersects</B>(<A HREF="../../../javax/media/Format.html">Format</A>&nbsp;format)</PRE>
<DL>
<DD>Finds the attributes shared by two matching <CODE>Format</CODE> objects.
 If the specified <CODE>Format</CODE> does not match this one, the result is
 undefined.<DD><DL>
<DT><B>Overrides:</B><DD><A HREF="../../../javax/media/format/VideoFormat.html#intersects(javax.media.Format)">intersects</A> in class <A HREF="../../../javax/media/format/VideoFormat.html">VideoFormat</A></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>The</CODE> - matching <CODE>Format</CODE> to intersect with this 
 <CODE>JPEGFormat</CODE>.<DT><B>Returns:</B><DD>A <CODE>Format</CODE> object
 with its attributes set to those attributes common to both 
 <CODE>Format</CODE> objects.<DT><B>See Also: </B><DD><A HREF="../../../javax/media/format/JPEGFormat.html#matches(javax.media.Format)"><CODE>matches(javax.media.Format)</CODE></A></DL>
</DD>
</DL>
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