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<HTML
><HEAD
><TITLE
>CDROM Examples</TITLE
><META
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"><LINK
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><DIV
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><H1
CLASS="SECT1"
><A
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></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) < 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<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 >= CD_PLAYING ) {
int m, s, f;
FRAMES_TO_MSF(cdrom->cur_frame, &m, &s, &f);
printf("Currently playing track %d, %d:%2.2d\n",
cdrom->track[cdrom->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->numtracks);
for ( i=0; i<cdrom->numtracks; ++i ) {
FRAMES_TO_MSF(cdrom->track[i].length, &m, &s, &f);
if ( f > 0 )
++s;
printf("\tTrack (index %d) %d: %d:%2.2d\n", i,
cdrom->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->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
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