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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 Mon Jul 15 11:50:58 PDT 2002 --><TITLE>: Class MusicData</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 CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="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="class-use/MusicData.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="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="../../../quicktime/std/music/MusicComponentInfo.html"><B>PREV CLASS</B></A> <A HREF="../../../quicktime/std/music/MusicMIDIPacket.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="MusicData.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> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">quicktime.std.music</FONT><BR>Class MusicData</H2><PRE>java.lang.Object | +--<A HREF="../../../quicktime/QTObject.html">quicktime.QTObject</A> | +--<A HREF="../../../quicktime/util/QTHandleRef.html">quicktime.util.QTHandleRef</A> | +--<A HREF="../../../quicktime/util/QTHandle.html">quicktime.util.QTHandle</A> | +--<B>quicktime.std.music.MusicData</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../quicktime/jdirect/InterfaceLib.html">InterfaceLib</A>, <A HREF="../../../quicktime/jdirect/PrimitivesLib.html">PrimitivesLib</A>, <A HREF="../../../quicktime/jdirect/QuickTimeLib.html">QuickTimeLib</A>, <A HREF="../../../quicktime/jdirect/SharedLibrary.html">SharedLibrary</A>, com.apple.jdirect.SharedLibrary</DD></DL><HR><DL><DT>public class <B>MusicData</B><DT>extends <A HREF="../../../quicktime/util/QTHandle.html">QTHandle</A></DL><P>MusicData objects contain general information for a Music Track that the TunePlayer uses when it instantiates NoteChannels for the parts contained in the music media. MusicData object's internal data are all aligned on int values (ie. 32bit data segments) so the offsets for getting and setting values in this structure are expressed in terms of these 32bit values. <P> Data in MusicData is in big endian order and the stuff static methods return values are in the correct big endian format and order to be added to a MusicData object as is. If an application writes its own stuff methods they can return the data in big endian order to ensure compatibility with the existing stuff methods. Thus when music events are added to the MusicData they must be in big endian format and the values retrieved from a constructed MusicData object will be in big endian order. <P> Many of the macros that are provided in the QuickTimeMusic.h file are translated here as static methods. The names of the macros are represented here with the qtma_ removed and the first letter after the _ is NOT a capital. Thus qtma_StuffRestEvent becomes stuffRestEvent. <P> An application does NOT need to set the end of sequence marker event if this marker should be set as the last music data element in the MusicData object. The set... and get... calls will check for proper bounds and include a check that allows for the required existence of the end of sequence marker.<P><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="../../../quicktime/std/music/MusicData.html#kNoteRequestHeaderEventLength">kNoteRequestHeaderEventLength</A></B></CODE><BR> The size (numer of ints) of a kNoteRequestEvent (including its header and footer)</TD></TR></TABLE> <A NAME="fields_inherited_from_class_quicktime.jdirect.QuickTimeLib"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface quicktime.jdirect.<A HREF="../../../quicktime/jdirect/QuickTimeLib.html">QuickTimeLib</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../quicktime/jdirect/QuickTimeLib.html#JDirect_MacOSX">JDirect_MacOSX</A>, <A HREF="../../../quicktime/jdirect/QuickTimeLib.html#libraryInstance">libraryInstance</A>, <A HREF="../../../quicktime/jdirect/QuickTimeLib.html#name">name</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../quicktime/std/music/MusicData.html#MusicData(int)">MusicData</A></B>(int size)</CODE><BR> Create a MusicData object of the specified number of bytes.</TD></TR></TABLE> <!-- ========== 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>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/std/music/MusicData.html#controlController(int)">controlController</A></B>(int x)</CODE><BR> Given a stuffed big-endian order QuickTime music event this method will extract the controller number.</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="../../../quicktime/std/music/MusicData.html#controlValue(int)">controlValue</A></B>(int x)</CODE><BR> Given a stuffed big-endian order QuickTime music event this method will extract the controller's specified value.</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="../../../quicktime/std/music/MusicData.html#eventType(int)">eventType</A></B>(int x)</CODE><BR> Given a stuffed big-endian order QuickTime music event this method will extract the event type.</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="../../../quicktime/std/music/MusicData.html#generalLength(int)">generalLength</A></B>(int x)</CODE><BR> Given a stuffed big-endian order QuickTime music event this method will extract the general event's length from either header or the footer of the general event.</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="../../../quicktime/std/music/MusicData.html#generalSubtype_Footer(int)">generalSubtype_Footer</A></B>(int x)</CODE><BR> Given a stuffed big-endian order QuickTime music event this method will extract the general event's sub type from the footer of the general event.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../quicktime/std/music/AtomicInstrument.html">AtomicInstrument</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/std/music/MusicData.html#getAtomicInstrument(int)">getAtomicInstrument</A></B>(int offset)</CODE><BR> Returns an AtomicInstrument from the specified offset (numer of ints) into the MusicData.</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="../../../quicktime/std/music/MusicData.html#getMusicEvent(int)">getMusicEvent</A></B>(int offset)</CODE><BR> Returns the big endian ordered stuffed QuickTime music event at the specified number of ints into the MusicData.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../quicktime/std/music/NoteRequest.html">NoteRequest</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/std/music/MusicData.html#getNoteRequest(int)">getNoteRequest</A></B>(int offset)</CODE><BR> Returns a NoteRequest object from the specified offset (numer of ints) into the MusicData.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/std/music/MusicData.html#getXMusicEvent(int)">getXMusicEvent</A></B>(int offset)</CODE><BR>⌨️ 快捷键说明
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