Mercurial > sdl-ios-xcode
view docs/html/sdlcd.html @ 1643:51038e80ae59
More general fix for bug #189
The clipping is done at a higher level, and the low level functions are
passed clipped rectangles. Drivers which don't support source clipping
have not been changed, so the image will be squished instead of clipped,
but at least they will no longer crash when the destination rect was out
of bounds.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 17 Apr 2006 06:47:23 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_CD</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><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 SUMMARY="Header navigation 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" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlcdtrack.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLCD" ></A >SDL_CD</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN7566" ></A ><H2 >Name</H2 >SDL_CD -- CDROM Drive Information</DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7569" ></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="AEN7572" ></A ><H2 >Structure Data</H2 ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN7574" ></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="AEN7604" ></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="AEN7614" ></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="AEN7617" ></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 SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlcdclose.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlcdtrack.html" ACCESSKEY="N" >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" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_CDtrack</TD ></TR ></TABLE ></DIV ></BODY ></HTML >