cd inserted event Post: 46496

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Top Forums Programming cd inserted event Post 46496 by Perderabo on Saturday 17th of January 2004 01:09:47 PM

01-17-2004

Administrator Emeritus

fpmurphy, that link did not work for me.

massimo_rati, you cannot have a process magically spring into existence because a cd has been inserted. You can write a daemon that will notice a cd insertion. SunOS comes with a volume manager that notices cd insertions and mounts the cd. Other versions of unix might have something similiar. This would be a problem for you. Most likely, only one such program could be running.

How this works will depend on the cd driver. You need to find the docs for your cd driver and read them.

Ideally, you will simply use open(2) on the device file for the cd. And you will not use O_NONBLOCK nor O_NDELAY. Thus the open will block until the device is ready.

But anything is possible. You're at the mercy of the driver's author.

Perderabo

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sdl_cdplaytracks

SDL_CDPlayTracks(3)						 SDL API Reference					       SDL_CDPlayTracks(3)

NAME

       SDL_CDPlayTracks- Play the given CD track(s)

SYNOPSIS

       #include "SDL.h"

       int SDL_CDPlayTracks(SDL_CD *cdrom, int start_track, int start_frame, int ntracks, int nframes));

DESCRIPTION

       SDL_CDPlayTracks plays the given CD starting at track start_track, for ntracks tracks.

       start_frame  is the frame offset, from the beginning of the start_track, at which to start. nframes is the frame offset, from the beginning
       of the last track (start_track+ntracks), at which to end playing.

       SDL_CDPlayTracks should only be called after calling SDL_CDStatus to get track information about the CD.

	      Note:

	      Data tracks are ignored.

RETURN VALUE

       Returns 0, or -1 if there was an error.

EXAMPLES

       /* assuming cdrom is a previously opened device */
       /* Play the entire CD */
       if(CD_INDRIVE(SDL_CDStatus(cdrom)))
	 SDL_CDPlayTracks(cdrom, 0, 0, 0, 0);

       /* Play the first track */
       if(CD_INDRIVE(SDL_CDStatus(cdrom)))
	 SDL_CDPlayTracks(cdrom, 0, 0, 1, 0);

       /* Play first 15 seconds of the 2nd track */
       if(CD_INDRIVE(SDL_CDStatus(cdrom)))
	 SDL_CDPlayTracks(cdrom, 1, 0, 0, CD_FPS*15);

SEE ALSO

       SDL_CDPlay, SDL_CDStatus, SDL_CD

SDL
							      Tue 11 Sep 2001, 22:58					       SDL_CDPlayTracks(3)