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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 11:51:03 PDT 2002 --><TITLE>: Class QTUtils</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 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BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="QTUtils.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">quicktime.util</FONT><BR>Class QTUtils</H2><PRE>java.lang.Object | +--<B>quicktime.util.QTUtils</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 final class <B>QTUtils</B><DT>extends java.lang.Object<DT>implements <A HREF="../../quicktime/jdirect/QuickTimeLib.html">QuickTimeLib</A></DL><P>This provides a set of routines to convert between types that the QT calls expect and the basic Java classes and types <P> Some of the structures in QT are kept in their native BigEndian format. <UL> QTStructs with BigEndian formats: <LI> ToneDescription <LI> NoteRequest </ul> These conversions are generally done for you where they are required in the get/set methods of the classes concerned.<P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><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 ======== --><!-- ========== 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 void</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#checkFreeMemory()">checkFreeMemory</A></B>()</CODE><BR> This call will ensure that a reserved amount of application heap memory on the MacOS is free.</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/util/QTUtils.html#convertEventModifier(int)">convertEventModifier</A></B>(int javaEvtMod)</CODE><BR> Convert the modifier values in java InputEvents to those expected by QT.</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/util/QTUtils.html#convertKeyValue(int)">convertKeyValue</A></B>(int javaKeyValue)</CODE><BR> Convert the key values in java KeyEvents to those expected by QT.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#CString2String(byte[], int)">CString2String</A></B>(byte[] str, int offset)</CODE><BR> Converts a CString into a java.lang.String.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#endianFlip(java.lang.Object, int, quicktime.util.EndianDescriptor)">endianFlip</A></B>(java.lang.Object src, int srcOffset, <A HREF="../../quicktime/util/EndianDescriptor.html">EndianDescriptor</A> ed)</CODE><BR> This will flip the supplied src object's fields according to the characteristics of the supplied EndianDescriptor.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#endianFlip(java.lang.Object, int, java.lang.Object, int, quicktime.util.EndianDescriptor)">endianFlip</A></B>(java.lang.Object src, int srcOffset, java.lang.Object dest, int destOffset, <A HREF="../../quicktime/util/EndianDescriptor.html">EndianDescriptor</A> ed)</CODE><BR> This will flip the supplied src object's fields according to the characteristics of the supplied EndianDescriptor and copy these flipped values to the destination object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static short</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#endianFlip16(short)">endianFlip16</A></B>(short s)</CODE><BR> This will flip the endian order of a 16bit 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/util/QTUtils.html#endianFlip32(int)">endianFlip32</A></B>(int i)</CODE><BR> This will flip the endian order of a 32bit value</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static long</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#endianFlip64(long)">endianFlip64</A></B>(long l)</CODE><BR> This will flip the endian order of a 64bit value</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static float</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#Fix2X(int)">Fix2X</A></B>(int fix)</CODE><BR> Convert a float to a 16.16 Fixed format</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static float</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#Fract2X(int)">Fract2X</A></B>(int fract)</CODE><BR> Convert a 2.30 Fract format to a float</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#fromOSType(int)">fromOSType</A></B>(int osType)</CODE><BR> Converts an int into a 4 character string representing an OSType.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#PString2String(byte[], int)">PString2String</A></B>(byte[] pString, int offset)</CODE><BR> Converts a PString into a java.lang.String.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#reclaimMemory()">reclaimMemory</A></B>()</CODE><BR> Reclaim as much memory as possible and ensure that all finalize methods are called on objects which have been collected.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static float</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#ShortFix2X(short)">ShortFix2X</A></B>(short fix)</CODE><BR> Convert a 8.8 Fixed format to a float</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#String2CString(java.lang.String)">String2CString</A></B>(java.lang.String str)</CODE><BR> Convert a java.lang.String to a CString byte array.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#String2PString(java.lang.String, int)">String2PString</A></B>(java.lang.String str, int len)</CODE><BR> Convert a java.lang.String to a PString byte array.</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/util/QTUtils.html#toOSType(char, char, char, char)">toOSType</A></B>(char a, char b, char c, char d)</CODE><BR> Converts four characters into an OSType int</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/util/QTUtils.html#toOSType(java.lang.String)">toOSType</A></B>(java.lang.String str)</CODE><BR> Converts an OSType (4 character) string into an int.</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/util/QTUtils.html#UByte2Int(byte)">UByte2Int</A></B>(byte b)</CODE><BR> converts an unsigned byte to int.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static float</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#UFix2X(int)">UFix2X</A></B>(int fix)</CODE><BR> Convert a 16.16 Unsigned Fixed format to a float</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static long</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#UInt2Long(int)">UInt2Long</A></B>(int i)</CODE><BR> converts an unsigned int to long.</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/util/QTUtils.html#UShort2Int(short)">UShort2Int</A></B>(short s)</CODE><BR> converts an unsigned short to int.</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/util/QTUtils.html#X2Fix(float)">X2Fix</A></B>(float x)</CODE><BR> Convert a float to a 16.16 Fixed format</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/util/QTUtils.html#X2Fract(float)">X2Fract</A></B>(float x)</CODE><BR> Converts a float to a 2.30 Fract format</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static short</CODE></FONT></TD><TD><CODE><B><A HREF="../../quicktime/util/QTUtils.html#X2ShortFix(float)">X2ShortFix</A></B>(float x)</CODE><BR> Convert a float to a 8.8 Fixed format</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/util/QTUtils.html#X2UFix(float)">X2UFix</A></B>(float x)</CODE><BR> Convert a 16.16 Unsigned Fixed format to a float</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</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="convertEventModifier(int)"><!-- --></A><H3>convertEventModifier</H3><PRE>public static int <B>convertEventModifier</B>(int javaEvtMod)</PRE><DL><DD>Convert the modifier values in java InputEvents to those expected by QT.<DD><DL></DL></DD></DL><HR><A NAME="convertKeyValue(int)"><!-- --></A><H3>⌨️ 快捷键说明
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