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359 lines
4.5 KiB
359 lines
4.5 KiB
<HTML |
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><HEAD |
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><TITLE |
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>SDL_CD</TITLE |
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><META |
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NAME="GENERATOR" |
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
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"><LINK |
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REL="HOME" |
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TITLE="SDL Library Documentation" |
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HREF="index.html"><LINK |
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REL="UP" |
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TITLE="CD-ROM" |
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HREF="cdrom.html"><LINK |
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REL="PREVIOUS" |
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TITLE="SDL_CDClose" |
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HREF="sdlcdclose.html"><LINK |
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REL="NEXT" |
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TITLE="SDL_CDtrack" |
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HREF="sdlcdtrack.html"></HEAD |
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><BODY |
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CLASS="REFENTRY" |
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BGCOLOR="#FFF8DC" |
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TEXT="#000000" |
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LINK="#0000ee" |
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VLINK="#551a8b" |
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ALINK="#ff0000" |
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><DIV |
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CLASS="NAVHEADER" |
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><TABLE |
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SUMMARY="Header navigation table" |
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WIDTH="100%" |
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BORDER="0" |
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CELLPADDING="0" |
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CELLSPACING="0" |
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><TR |
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><TH |
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COLSPAN="3" |
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ALIGN="center" |
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>SDL Library Documentation</TH |
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></TR |
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><TR |
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><TD |
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WIDTH="10%" |
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ALIGN="left" |
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VALIGN="bottom" |
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><A |
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HREF="sdlcdclose.html" |
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ACCESSKEY="P" |
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>Prev</A |
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></TD |
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><TD |
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WIDTH="80%" |
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ALIGN="center" |
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VALIGN="bottom" |
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></TD |
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><TD |
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WIDTH="10%" |
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ALIGN="right" |
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VALIGN="bottom" |
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><A |
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HREF="sdlcdtrack.html" |
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ACCESSKEY="N" |
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>Next</A |
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></TD |
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></TR |
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></TABLE |
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><HR |
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ALIGN="LEFT" |
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WIDTH="100%"></DIV |
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><H1 |
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><A |
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NAME="SDLCD" |
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></A |
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>SDL_CD</H1 |
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><DIV |
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CLASS="REFNAMEDIV" |
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><A |
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NAME="AEN7566" |
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></A |
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><H2 |
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>Name</H2 |
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>SDL_CD -- CDROM Drive Information</DIV |
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><DIV |
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CLASS="REFSECT1" |
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><A |
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NAME="AEN7569" |
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></A |
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><H2 |
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>Structure Definition</H2 |
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><PRE |
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CLASS="PROGRAMLISTING" |
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>typedef struct{ |
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int id; |
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CDstatus status; |
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int numtracks; |
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int cur_track; |
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int cur_frame; |
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SDL_CDtrack track[SDL_MAX_TRACKS+1]; |
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} SDL_CD;</PRE |
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></DIV |
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><DIV |
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CLASS="REFSECT1" |
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><A |
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NAME="AEN7572" |
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></A |
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><H2 |
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>Structure Data</H2 |
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><DIV |
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CLASS="INFORMALTABLE" |
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><A |
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NAME="AEN7574" |
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></A |
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><P |
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></P |
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><TABLE |
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BORDER="0" |
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CLASS="CALSTABLE" |
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><TBODY |
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><TR |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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><TT |
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CLASS="STRUCTFIELD" |
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><I |
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>id</I |
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></TT |
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></TD |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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>Private drive identifier</TD |
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></TR |
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><TR |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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><TT |
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CLASS="STRUCTFIELD" |
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><I |
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>status</I |
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></TT |
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></TD |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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>Drive <A |
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HREF="sdlcdstatus.html" |
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>status</A |
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></TD |
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></TR |
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><TR |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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><TT |
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CLASS="STRUCTFIELD" |
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><I |
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>numtracks</I |
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></TT |
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></TD |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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>Number of tracks on the CD</TD |
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></TR |
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><TR |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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><TT |
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CLASS="STRUCTFIELD" |
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><I |
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>cur_track</I |
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></TT |
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></TD |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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>Current track</TD |
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></TR |
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><TR |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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><TT |
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CLASS="STRUCTFIELD" |
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><I |
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>cur_frame</I |
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></TT |
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></TD |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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>Current frame offset within the track</TD |
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></TR |
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><TR |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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><TT |
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CLASS="STRUCTFIELD" |
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><I |
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>track</I |
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></TT |
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>[SDL_MAX_TRACKS+1]</TD |
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><TD |
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ALIGN="LEFT" |
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VALIGN="TOP" |
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>Array of track descriptions. (see <A |
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HREF="sdlcdtrack.html" |
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><SPAN |
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CLASS="STRUCTNAME" |
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>SDL_CDtrack</SPAN |
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></A |
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>)</TD |
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></TR |
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></TBODY |
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></TABLE |
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><P |
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></P |
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></DIV |
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></DIV |
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><DIV |
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CLASS="REFSECT1" |
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><A |
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NAME="AEN7604" |
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></A |
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><H2 |
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>Description</H2 |
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><P |
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>An <SPAN |
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CLASS="STRUCTNAME" |
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>SDL_CD</SPAN |
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> structure is returned by <A |
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HREF="sdlcdopen.html" |
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><TT |
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CLASS="FUNCTION" |
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>SDL_CDOpen</TT |
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></A |
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>. It represents an opened CDROM device and stores information on the layout of the tracks on the disc.</P |
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><P |
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>A frame is the base data unit of a CD. <TT |
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CLASS="LITERAL" |
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>CD_FPS</TT |
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> frames is equal to 1 second of music. SDL provides two macros for converting between time and frames: <TT |
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CLASS="LITERAL" |
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>FRAMES_TO_MSF(f, M,S,F)</TT |
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> and <TT |
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CLASS="LITERAL" |
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>MSF_TO_FRAMES</TT |
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>.</P |
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></DIV |
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><DIV |
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CLASS="REFSECT1" |
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><A |
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NAME="AEN7614" |
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></A |
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><H2 |
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>Examples</H2 |
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><PRE |
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CLASS="PROGRAMLISTING" |
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>int min, sec, frame; |
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int frame_offset; |
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FRAMES_TO_MSF(cdrom->cur_frame, &min, &sec, &frame); |
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printf("Current Position: %d minutes, %d seconds, %d frames\n", min, sec, frame); |
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frame_offset=MSF_TO_FRAMES(min, sec, frame);</PRE |
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></DIV |
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><DIV |
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CLASS="REFSECT1" |
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><A |
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NAME="AEN7617" |
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></A |
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><H2 |
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>See Also</H2 |
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><P |
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><A |
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HREF="sdlcdopen.html" |
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><TT |
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CLASS="FUNCTION" |
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>SDL_CDOpen</TT |
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></A |
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>, |
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<A |
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HREF="sdlcdtrack.html" |
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><SPAN |
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CLASS="STRUCTNAME" |
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>SDL_CDtrack</SPAN |
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></A |
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></P |
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></DIV |
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><DIV |
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CLASS="NAVFOOTER" |
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><HR |
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ALIGN="LEFT" |
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WIDTH="100%"><TABLE |
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SUMMARY="Footer navigation table" |
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WIDTH="100%" |
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BORDER="0" |
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CELLPADDING="0" |
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CELLSPACING="0" |
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><TR |
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><TD |
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WIDTH="33%" |
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ALIGN="left" |
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VALIGN="top" |
|
><A |
|
HREF="sdlcdclose.html" |
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ACCESSKEY="P" |
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>Prev</A |
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></TD |
|
><TD |
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WIDTH="34%" |
|
ALIGN="center" |
|
VALIGN="top" |
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><A |
|
HREF="index.html" |
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ACCESSKEY="H" |
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>Home</A |
|
></TD |
|
><TD |
|
WIDTH="33%" |
|
ALIGN="right" |
|
VALIGN="top" |
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><A |
|
HREF="sdlcdtrack.html" |
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ACCESSKEY="N" |
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>Next</A |
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></TD |
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></TR |
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><TR |
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><TD |
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WIDTH="33%" |
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ALIGN="left" |
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VALIGN="top" |
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>SDL_CDClose</TD |
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><TD |
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WIDTH="34%" |
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ALIGN="center" |
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VALIGN="top" |
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><A |
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HREF="cdrom.html" |
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ACCESSKEY="U" |
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>Up</A |
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></TD |
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><TD |
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WIDTH="33%" |
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ALIGN="right" |
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VALIGN="top" |
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>SDL_CDtrack</TD |
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></TR |
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></TABLE |
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></DIV |
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></BODY |
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></HTML |
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> |