usr.sbin/i4b/isdnphone/isdn.c

   1 /*
   2  * Copyright (c) 1999 Hellmuth Michaelis. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  *---------------------------------------------------------------------------
  26  *
  27  *      isdnphone - isdn (i4b) handling
  28  *      ===============================
  29  *
  30  *      $Id: isdn.c,v 1.4 1999/12/13 21:25:26 hm Exp $
  31  *
  32  * $FreeBSD: src/usr.sbin/i4b/isdnphone/isdn.c,v 1.1.2.1 2001/08/01 17:45:06 obrien Exp $
  33  * $DragonFly: src/usr.sbin/i4b/isdnphone/isdn.c,v 1.2 2003/06/17 04:29:55 dillon Exp $
  34  *
  35  *      last edit-date: [Mon Dec 13 21:53:05 1999]
  36  *
  37  *---------------------------------------------------------------------------*/
  38
  39 #include "defs.h"
  40
  41 /*---------------------------------------------------------------------------*
  42  *      dialer init
  43  *---------------------------------------------------------------------------*/
  44 int
  45 init_dial(char *device)
  46 {
  47         int ret;
  48
  49         if((ret = open(device, O_RDWR)) < 0)
  50         {
  51                 fprintf(stderr, "unable to open %s: %s\n", device, strerror(errno));
  52                 return(-1);
  53         }
  54         return(ret);
  55 }
  56
  57 /*---------------------------------------------------------------------------*
  58  *      i4bteld data available handler
  59  *---------------------------------------------------------------------------*/
  60 void
  61 dial_hdlr(void)
  62 {
  63         char result;
  64
  65         if((read (dialerfd, &result, 1) < 0))
  66         {
  67                 fatal("read failed: %s", strerror(errno));
  68         }
  69
  70         switch(result)
  71         {
  72                 case RSP_CONN:
  73                         newstate(ST_ACTIVE);
  74                         message("connected to remote!");
  75                         break;
  76
  77                 case RSP_BUSY:
  78                         message("remote is busy!");
  79                         break;
  80
  81                 case RSP_HUP:
  82                         newstate(ST_IDLE);
  83                         message("disconnected from remote!");
  84                         break;
  85
  86                 case RSP_NOA:
  87                         message("no answer from remote!");
  88                         break;
  89
  90                 default:
  91                         message("unknown response = 0x%2x!", result);
  92                         break;
  93         }
  94 }
  95
  96 /*---------------------------------------------------------------------------*
  97  *      telephone init
  98  *---------------------------------------------------------------------------*/
  99 int
 100 init_tel(char *device)
 101 {
 102         int ret;
 103         int format;
 104
 105         if(play_fmt == AFMT_MU_LAW)
 106                 format = CVT_ALAW2ULAW;
 107         else
 108                 format = CVT_NONE;
 109
 110         if((ret = open(device, O_RDWR)) < 0)
 111                 fatal("unable to open %s: %s\n", device, strerror(errno));
 112
 113         if((ioctl(ret, I4B_TEL_SETAUDIOFMT, &format)) < 0)
 114                 fatal("ioctl I4B_TEL_SETAUDIOFMT failed: %s", strerror(errno));
 115
 116         return(ret);
 117 }
 118
 119 /*---------------------------------------------------------------------------*
 120  *      dial number
 121  *---------------------------------------------------------------------------*/
 122 void
 123 do_dial(char *number)
 124 {
 125         char commandbuffer[80];
 126         sprintf(commandbuffer, "D%s", number);
 127
 128         if((write(dialerfd, commandbuffer, strlen(commandbuffer))) < 0)
 129         {
 130                 fatal("write commandbuffer failed: %s", strerror(errno));
 131         }
 132 }
 133
 134 /*---------------------------------------------------------------------------*
 135  *      hangup
 136  *---------------------------------------------------------------------------*/
 137 void
 138 do_hangup(void)
 139 {
 140         char commandbuffer[80];
 141
 142         if(state == ST_IDLE)
 143         {
 144                 message("tried hangup while ST_IDLE");
 145                 return;
 146         }
 147
 148         sprintf(commandbuffer, "H");
 149
 150         if((write(dialerfd, commandbuffer, strlen(commandbuffer))) < 0)
 151         {
 152                 fatal("write commandbuffer failed: %s", strerror(errno));
 153         }
 154 }
 155
 156 /*---------------------------------------------------------------------------*
 157  *      i4btel speech data available handler
 158  *---------------------------------------------------------------------------*/
 159 void
 160 tel_hdlr(void)
 161 {
 162         unsigned char buffer[BCH_MAX_DATALEN];
 163         int ret;
 164
 165         ret = read(telfd, buffer, BCH_MAX_DATALEN);
 166
 167         if(ret < 0)
 168         {
 169                 fatal("read telfd failed: %s", strerror(errno));
 170         }
 171
 172         debug("tel_hdlr: read %d bytes\n", ret);
 173
 174         if(ret > 0)
 175         {
 176                 audiowrite(ret, buffer);
 177         }
 178 }
 179
 180 /*---------------------------------------------------------------------------*
 181  *      write audio data to ISDN
 182  *---------------------------------------------------------------------------*/
 183 void
 184 telwrite(int len, unsigned char *buf)
 185 {
 186         if((write(telfd, buf, len)) < 0)
 187         {
 188                 fatal("write tel failed: %s", strerror(errno));
 189         }
 190 }
 191
 192 /* EOF */