kolibrios-fun/contrib/sdk/sources/SDL-1.2.2/docs/html/guidecdromexamples.html

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<HTML
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>CDROM Examples</TITLE
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><H1
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><A
NAME="GUIDECDROMEXAMPLES"
>CDROM Examples</A
></H1
><P
></P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN393"
>Listing CD-ROM drives</A
></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
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><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN397"
>Opening the default drive</A
></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
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><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN401"
>Listing the tracks on a CD</A
></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
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><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN405"
>Play an entire CD</A
></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, 10);</PRE
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