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view docs/html/guidecdromexamples.html @ 3844:332a59e39ce1 SDL-ryan-multiple-audio-device

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I really don't want to update these last two audio backends...I added an error that says if no one complains, the backends will be removed eventually. So if anyone ever wants them and they care enough to speak up, we'll know to do something about it. If no one does, that's less code to maintain. :)
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 06:45:17 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>CDROM Examples</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="Examples"
HREF="guideexamples.html"><LINK
REL="PREVIOUS"
TITLE="Audio Examples"
HREF="guideaudioexamples.html"><LINK
REL="NEXT"
TITLE="Time Examples"
HREF="guidetimeexamples.html"></HEAD
><BODY
CLASS="SECT1"
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="guideaudioexamples.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
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>Chapter 4. Examples</TD
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><A
HREF="guidetimeexamples.html"
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>Next</A
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><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="GUIDECDROMEXAMPLES"
></A
>CDROM Examples</H1
><P
></P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN393"
></A
>Listing CD-ROM drives</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    #include "SDL.h"

    /* Initialize SDL first */
    if ( SDL_Init(SDL_INIT_CDROM) &#60; 0 ) {
        fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
        exit(1);
    }
    atexit(SDL_Quit);

    /* Find out how many CD-ROM drives are connected to the system */
    printf("Drives available: %d\n", SDL_CDNumDrives());
    for ( i=0; i&#60;SDL_CDNumDrives(); ++i ) {
        printf("Drive %d:  \"%s\"\n", i, SDL_CDName(i));
    }</PRE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN397"
></A
>Opening the default drive</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;
    CDstatus status;
    char *status_str;

    cdrom = SDL_CDOpen(0);
    if ( cdrom == NULL ) {
        fprintf(stderr, "Couldn't open default CD-ROM drive: %s\n",
                        SDL_GetError());
        exit(2);
    }

    status = SDL_CDStatus(cdrom);
    switch (status) {
        case CD_TRAYEMPTY:
            status_str = "tray empty";
            break;
        case CD_STOPPED:
            status_str = "stopped";
            break;
        case CD_PLAYING:
            status_str = "playing";
            break;
        case CD_PAUSED:
            status_str = "paused";
            break;
        case CD_ERROR:
            status_str = "error state";
            break;
    }
    printf("Drive status: %s\n", status_str);
    if ( status &#62;= CD_PLAYING ) {
        int m, s, f;
        FRAMES_TO_MSF(cdrom-&#62;cur_frame, &#38;m, &#38;s, &#38;f);
        printf("Currently playing track %d, %d:%2.2d\n",
        cdrom-&#62;track[cdrom-&#62;cur_track].id, m, s);
    }</PRE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN401"
></A
>Listing the tracks on a CD</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;          /* Assuming this has already been set.. */
    int i;
    int m, s, f;

    SDL_CDStatus(cdrom);
    printf("Drive tracks: %d\n", cdrom-&#62;numtracks);
    for ( i=0; i&#60;cdrom-&#62;numtracks; ++i ) {
        FRAMES_TO_MSF(cdrom-&#62;track[i].length, &#38;m, &#38;s, &#38;f);
        if ( f &#62; 0 )
            ++s;
        printf("\tTrack (index %d) %d: %d:%2.2d\n", i,
        cdrom-&#62;track[i].id, m, s);
    }</PRE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN405"
></A
>Play an entire CD</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;          /* Assuming this has already been set.. */

    // Play entire CD:
    if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
        SDL_CDPlayTracks(cdrom, 0, 0, 0, 0);

        // Play last track:
        if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
            SDL_CDPlayTracks(cdrom, cdrom-&#62;numtracks-1, 0, 0, 0);
        }

        // Play first and second track and 10 seconds of third track:
        if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
            SDL_CDPlayTracks(cdrom, 0, 0, 2, CD_FPS * 10);</PRE
></P
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><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
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WIDTH="100%"
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WIDTH="33%"
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><A
HREF="guideaudioexamples.html"
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>Prev</A
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