forked from KolibriOS/kolibrios
351 lines
4.3 KiB
HTML
351 lines
4.3 KiB
HTML
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<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 1.64
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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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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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>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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>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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>SDL_CD</A
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></H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN7017"
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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="AEN7020"
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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="AEN7023"
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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="AEN7025"
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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="AEN7055"
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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="AEN7065"
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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="AEN7068"
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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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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"
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><A
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HREF="sdlcdclose.html"
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>Prev</A
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></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="index.html"
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>Home</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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><A
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HREF="sdlcdtrack.html"
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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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>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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>
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