src/tX_prelis.cc

   1 /*
   2     terminatorX - realtime audio scratching software
   3     Copyright (C) 1999-2003  Alexander König
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19     File: tX_prelis.cc
  20
  21     Description: This takes care of the "pre-listening" of audiofiles
  22                  in the load dialog.
  23
  24 */
  25
  26 extern "C" {
  27 #include <sys/types.h>
  28 #include <sys/wait.h>
  29 };
  30
  31 #include "tX_global.h"
  32
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <unistd.h>
  36 #include <signal.h>
  37 #include <stdlib.h>
  38
  39 #ifdef HAVE_CONFIG_H
  40 #include <config.h>
  41 #endif
  42
  43 pid_t player_pid=0;
  44
  45 void prelis_stop()
  46 {
  47         int status;
  48
  49         if (player_pid)
  50         {
  51                 kill(player_pid, SIGTERM);
  52                 waitpid(player_pid, &status, 0);
  53                 player_pid=0;
  54                 usleep(200);
  55         }
  56 }
  57
  58 void prelis_start(char *name) {
  59         char *ext;
  60         pid_t temp;
  61         int usempg123=0;
  62         int useogg123=0;
  63         int res;
  64         char dev[PATH_MAX];
  65         char ogg123_dev[PATH_MAX];
  66         char nm[PATH_MAX];
  67
  68         if (!globals.prelis) return;
  69
  70         if (player_pid) prelis_stop();
  71
  72         ext=strrchr(name, (int) '.');
  73         if (ext)
  74         {
  75                 if (strlen(ext)>3)
  76                 {
  77                         ext++;
  78 #ifdef USE_OGG123_INPUT
  79                         strcpy(ogg123_dev, "dev:");
  80                         if (!strncasecmp("ogg", ext, 2))
  81                         useogg123=1;
  82                         else
  83 #endif
  84 #ifdef USE_MPG123_INPUT
  85                         if (!strncasecmp("mp", ext, 2))
  86                         usempg123=1;
  87                         else
  88 #endif
  89 #ifdef USE_SOX_INPUT
  90                         usempg123=0;
  91 #else
  92                         return;
  93 #endif
  94                 }
  95         }
  96
  97         temp=fork();
  98
  99         if (temp==-1) /* error */
 100         {
 101                 return;
 102         }
 103         else if (temp==0) /* CHILD */
 104         {
 105                 strcpy(dev, globals.oss_device);
 106                 strcat(ogg123_dev, dev);
 107                 strcpy(nm, name);
 108 #ifdef USE_OGG123_INPUT
 109                 if (useogg123)
 110                         res=execlp("ogg123", "ogg123", "-q", "-d", "oss", "-o", ogg123_dev,
 111                         nm, NULL);
 112                 else
 113 #endif
 114 #ifdef USE_MPG123_INPUT
 115                 if (usempg123)
 116                         res=execlp("mpg123", "mpg123", "-q", "-o","oss","-a", dev, nm, NULL);
 117                 else
 118 #endif
 119 #ifdef USE_SOX_INPUT
 120                         res=execlp("sox", "sox", nm, "-t", "ossdsp", "-w", "-s", dev, NULL);
 121 #else
 122                         exit(0);
 123 #endif
 124
 125                 perror("Pre-Listen Error:");
 126                 exit(0);
 127         }
 128         else /* PARENT */
 129         {
 130                 player_pid=temp;
 131         }
 132 }