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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 18:57:44 PDT 2000 --><TITLE>: Interface Track</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/TimeBase.html"><B>PREV CLASS</B></A> <A HREF="../../javax/media/TrackListener.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="Track.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | 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</FONT><BR>Interface Track</H2><HR><DL><DT>public interface <B>Track</B><DT>extends <A HREF="../../javax/media/Duration.html">Duration</A></DL><P>A <CODE>Track</CODE> abstracts the information specific to an individual track in a media stream. A media stream might contain multiple media tracks, such as separate tracks for audio, video, and midi data. A <CODE>Track</CODE> is the output of a <code>Demultiplexer</code>.<P><DL><DT><B>Since: </B><DD>JMF 2.0</DD><DT><B>See Also: </B><DD><A HREF="../../javax/media/Demultiplexer.html"><CODE>Demultiplexer</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#FRAME_UNKNOWN">FRAME_UNKNOWN</A></B></CODE><BR> The <CODE>mapTimeToFrame</CODE> method returns this value if the time mapping cannot be established or the <CODE>Track</CODE> contains an audio stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../javax/media/Time.html">Time</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#TIME_UNKNOWN">TIME_UNKNOWN</A></B></CODE><BR> The <CODE>mapFrameToTime</CODE> method returns this value if the time mapping cannot be established or the <CODE>Track</CODE> contains an audio stream.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.media.Duration"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface javax.media.<A HREF="../../javax/media/Duration.html">Duration</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../javax/media/Duration.html#DURATION_UNBOUNDED">DURATION_UNBOUNDED</A>, <A HREF="../../javax/media/Duration.html#DURATION_UNKNOWN">DURATION_UNKNOWN</A></CODE></TD></TR></TABLE> <!-- ======== 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> <A HREF="../../javax/media/Format.html">Format</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#getFormat()">getFormat</A></B>()</CODE><BR> Gets the <code>Format</code> of the data in this <code>Track</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../javax/media/Time.html">Time</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#getStartTime()">getStartTime</A></B>()</CODE><BR> Retrieves the start time of this <CODE>Track</CODE>.</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/Track.html#isEnabled()">isEnabled</A></B>()</CODE><BR> Checks whether or not this <code>Track</code> is enabled.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../javax/media/Time.html">Time</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#mapFrameToTime(int)">mapFrameToTime</A></B>(int frameNumber)</CODE><BR> Gets the <CODE>Time</CODE> that corresponds to the specified frame number.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#mapTimeToFrame(javax.media.Time)">mapTimeToFrame</A></B>(<A HREF="../../javax/media/Time.html">Time</A> t)</CODE><BR> Converts the given media time to the corresponding frame number.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#readFrame(javax.media.Buffer)">readFrame</A></B>(<A HREF="../../javax/media/Buffer.html">Buffer</A> buffer)</CODE><BR> Reads the next frame for this <CODE>Track</CODE>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#setEnabled(boolean)">setEnabled</A></B>(boolean t)</CODE><BR> Enables or disables this <code>Track</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/media/Track.html#setTrackListener(javax.media.TrackListener)">setTrackListener</A></B>(<A HREF="../../javax/media/TrackListener.html">TrackListener</A> listener)</CODE><BR> Adds an event listener for this <CODE>Track</CODE>.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_javax.media.Duration"><!-- --></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/Duration.html">Duration</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../javax/media/Duration.html#getDuration()">getDuration</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Field Detail</B></FONT></TD></TR></TABLE><A NAME="TIME_UNKNOWN"><!-- --></A><H3>TIME_UNKNOWN</H3><PRE>public static final <A HREF="../../javax/media/Time.html">Time</A> <B>TIME_UNKNOWN</B></PRE><DL><DD>The <CODE>mapFrameToTime</CODE> method returns this value if the time mapping cannot be established or the <CODE>Track</CODE> contains an audio stream.</DL><HR>⌨️ 快捷键说明
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