Mercurial > sdl-ios-xcode
view docs/html/sdlcd.html @ 520:26eb0f877ce6
Bumped version to 1.2.6 in CVS
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 08 Oct 2002 15:34:19 +0000 |
parents | e5bc29de3f0a |
children | 355632dca928 |
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<HTML ><HEAD ><TITLE >SDL_CD</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.64 "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="CD-ROM" HREF="cdrom.html"><LINK REL="PREVIOUS" TITLE="SDL_CDClose" HREF="sdlcdclose.html"><LINK REL="NEXT" TITLE="SDL_CDtrack" HREF="sdlcdtrack.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlcdclose.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlcdtrack.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLCD" >SDL_CD</A ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN7178" ></A ><H2 >Name</H2 >SDL_CD -- CDROM Drive Information</DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7181" ></A ><H2 >Structure Definition</H2 ><PRE CLASS="PROGRAMLISTING" >typedef struct{ int id; CDstatus status; int numtracks; int cur_track; int cur_frame; SDL_CDtrack track[SDL_MAX_TRACKS+1]; } SDL_CD;</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7184" ></A ><H2 >Structure Data</H2 ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN7186" ></A ><P ></P ><TABLE BORDER="0" CLASS="CALSTABLE" ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >id</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Private drive identifier</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >status</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Drive <A HREF="sdlcdstatus.html" >status</A ></TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >numtracks</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Number of tracks on the CD</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >cur_track</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Current track</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >cur_frame</I ></TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Current frame offset within the track</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="STRUCTFIELD" ><I >track</I ></TT >[SDL_MAX_TRACKS+1]</TD ><TD ALIGN="LEFT" VALIGN="TOP" >Array of track descriptions. (see <A HREF="sdlcdtrack.html" ><SPAN CLASS="STRUCTNAME" >SDL_CDtrack</SPAN ></A >)</TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7216" ></A ><H2 >Description</H2 ><P >An <SPAN CLASS="STRUCTNAME" >SDL_CD</SPAN > structure is returned by <A HREF="sdlcdopen.html" ><TT CLASS="FUNCTION" >SDL_CDOpen</TT ></A >. It represents an opened CDROM device and stores information on the layout of the tracks on the disc.</P ><P >A frame is the base data unit of a CD. <TT CLASS="LITERAL" >CD_FPS</TT > frames is equal to 1 second of music. SDL provides two macros for converting between time and frames: <TT CLASS="LITERAL" >FRAMES_TO_MSF(f, M,S,F)</TT > and <TT CLASS="LITERAL" >MSF_TO_FRAMES</TT >.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7226" ></A ><H2 >Examples</H2 ><PRE CLASS="PROGRAMLISTING" >int min, sec, frame; int frame_offset; FRAMES_TO_MSF(cdrom->cur_frame, &min, &sec, &frame); printf("Current Position: %d minutes, %d seconds, %d frames\n", min, sec, frame); frame_offset=MSF_TO_FRAMES(min, sec, frame);</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7229" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlcdopen.html" ><TT CLASS="FUNCTION" >SDL_CDOpen</TT ></A >, <A HREF="sdlcdtrack.html" ><SPAN CLASS="STRUCTNAME" >SDL_CDtrack</SPAN ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlcdclose.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlcdtrack.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_CDClose</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="cdrom.html" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_CDtrack</TD ></TR ></TABLE ></DIV ></BODY ></HTML >