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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Sat May 20 18:57:51 PDT 2000 --><TITLE>: Interface QualityControl</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT ID="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT ID="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT ID="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT ID="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT ID="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT ID="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/media/control/PortControl.html"><B>PREV CLASS</B></A> <A HREF="../../../javax/media/control/SilenceSuppressionControl.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="QualityControl.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.media.control</FONT><BR>Interface QualityControl</H2><HR><DL><DT>public interface <B>QualityControl</B><DT>extends <A HREF="../../../javax/media/Control.html">Control</A></DL><P>This interface is a Control for specifying the parameters for quality. Quality is referenced by a float value of 0.0 for minimal quality and 1.0 for maximum quality. There is usually a tradeoff between CPU usage and the quality: higher quality requires higher CPU usage.<P><DL><DT><B>Since: </B><DD>JMF 2.0</DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> float</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/control/QualityControl.html#getPreferredQuality()">getPreferredQuality</A></B>()</CODE><BR> Returns the default quality recommended for decoding or encoding.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> float</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/control/QualityControl.html#getQuality()">getQuality</A></B>()</CODE><BR> Returns the current value of the decoding or encoding quality parameter.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/control/QualityControl.html#isTemporalSpatialTradeoffSupported()">isTemporalSpatialTradeoffSupported</A></B>()</CODE><BR> Returns if the encoder can increase frame rate with reduced resolution and vica-versa.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> float</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/control/QualityControl.html#setQuality(float)">setQuality</A></B>(float newQuality)</CODE><BR> Set the quality for the decoding or encoding.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_javax.media.Control"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from interface javax.media.<A HREF="../../../javax/media/Control.html">Control</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/media/Control.html#getControlComponent()">getControlComponent</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getQuality()"><!-- --></A><H3>getQuality</H3><PRE>public float <B>getQuality</B>()</PRE><DL><DD>Returns the current value of the decoding or encoding quality parameter.<DD><DL></DL></DD><DD><DL><DT><B>Returns:</B><DD>the current decoding or encoding quality.</DL></DD></DL><HR><A NAME="setQuality(float)"><!-- --></A><H3>setQuality</H3><PRE>public float <B>setQuality</B>(float newQuality)</PRE><DL><DD>Set the quality for the decoding or encoding. This value may have different effects depending on the type of compression. A higher quality setting will result in better quality of the resulting outputb, e.g. better image quality for video. There is usually a tradeoff between CPU usage and the quality: higher quality requires higher CPU usage. This value is only a hint and the codec can choose to ignore it. The actual value that was set is returned. It should be in the range of 0.0 to 1.0.<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>newQuality</CODE> - the decoding or encoding quality.<DT><B>Returns:</B><DD>the quality that is actually set.</DL></DD></DL><HR><A NAME="getPreferredQuality()"><!-- --></A><H3>getPreferredQuality</H3><PRE>public float <B>getPreferredQuality</B>()</PRE><DL><DD>Returns the default quality recommended for decoding or encoding.<DD><DL></DL></DD><DD><DL><DT><B>Returns:</B><DD>the preferred decoding or encoding quality.</DL></DD></DL><HR><A NAME="isTemporalSpatialTradeoffSupported()"><!-- --></A><H3>isTemporalSpatialTradeoffSupported</H3><PRE>public boolean <B>isTemporalSpatialTradeoffSupported</B>()</PRE><DL><DD>Returns if the encoder can increase frame rate with reduced resolution and vica-versa.<DD><DL></DL></DD><DD><DL><DT><B>Returns:</B><DD>if the encoder can increase frame rate with reduced resolution and vica-versa.</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT ID="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT ID="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT ID="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT ID="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT ID="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT ID="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/media/control/PortControl.html"><B>PREV CLASS</B></A> <A HREF="../../../javax/media/control/SilenceSuppressionControl.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="QualityControl.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><font size="-1"> <a href="mailto:jmf-bugs@sun.com">Submit a bug or feature</a> <br>Copyright 1999-2000 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California, 94303, U.S.A. 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