player.c

   1 /*-
   2  * "THE BEER-WARE LICENSE" (Revision 42):
   3  * <tobias.rehbein@web.de> wrote this file. As long as you retain this notice
   4  * you can do whatever you want with this stuff. If we meet some day, and you
   5  * think this stuff is worth it, you can buy me a beer in return.
   6  *                                                              Tobias Rehbein
   7  */
   8
   9 #include <unistd.h>
  10 #include <signal.h>
  11 #include <err.h>
  12 #include <sys/types.h>
  13 #include "common.h"
  14 #include "oggfile.h"
  15 #include "player.h"
  16 #include "oggquiz.h"
  17
  18 /* Global variables */
  19 extern options_t options;
  20 static pid_t    pid = (pid_t) (-1);
  21
  22 void
  23 player_play(oggfile_t *oggfile)
  24 {
  25         pid_t           lpid;
  26
  27         player_stop();
  28
  29         switch (lpid = fork()) {
  30         case (0):
  31                 execl(options.ogg123, "ogg123", "-q", oggfile->filename, NULL);
  32                 err(1, "could not exec %s", options.ogg123);
  33         case (-1):
  34                 err(1, "could not fork player");
  35         default:
  36                 pid = lpid;
  37                 return;
  38         }
  39 }
  40
  41 void
  42 player_stop()
  43 {
  44         if (pid != (pid_t) (-1)) {
  45                 if (kill(pid, SIGHUP))
  46                         err(1, "could not kill running player");
  47                 pid = -1;
  48         }
  49 }