call.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** call functions                                                            **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include <stdio.h>
  13 //#include <string.h>
  14 //#include <stdlib.h>
  15 //#include <unistd.h>
  16 //#include <poll.h>
  17 //#include <sys/types.h>
  18 //#include <sys/stat.h>
  19 //#include <fcntl.h>
  20 #include "main.h"
  21 //#define __u8 unsigned char
  22 //#define __u16 unsigned short
  23 //#define __u32 unsigned long
  24 //#include "linux/isdnif.h"
  25
  26 unsigned long call_serial = 1; /* must be 1, because 0== no call */
  27
  28 //CALL_STATES
  29
  30 class Call *call_first = NULL;
  31
  32 /*
  33  * find the call with call_id
  34  */
  35 class Call *find_call_id(unsigned long call_id)
  36 {
  37         class Call *call = call_first;
  38
  39         while(call)
  40         {
  41 //printf("comparing: '%s' with '%s'\n", name, call->c_name);
  42                 if (call->c_serial == call_id)
  43                         return(call);
  44                 call = call->next;
  45         }
  46
  47         return(NULL);
  48 }
  49
  50
  51 /*
  52  * constructor for a new call
  53  */
  54 Call::Call(class Endpoint *epoint)
  55 {
  56         class Call **callp;
  57
  58         if (!epoint)
  59         {
  60                 PERROR("software error, epoint is NULL.\n");
  61                 exit(-1);
  62         }
  63         c_serial = call_serial++;
  64         c_type = CALL_TYPE_NONE;
  65
  66         /* attach to chain */
  67         next = NULL;
  68         callp = &call_first;
  69         while(*callp)
  70                 callp = &((*callp)->next);
  71         *callp = this;
  72
  73         classuse++;
  74 }
  75
  76
  77 /*
  78  * call descructor
  79  */
  80 Call::~Call()
  81 {
  82         class Call *cl, **clp;
  83
  84         classuse--;
  85
  86         cl = call_first;
  87         clp = &call_first;
  88         while(cl)
  89         {
  90                 if (cl == this)
  91                         break;
  92                 clp = &cl->next;
  93                 cl = cl->next;
  94         }
  95         if (!cl)
  96         {
  97                 PERROR("software error, call not in chain! exitting\n");
  98                 exit(-1);
  99         }
 100         *clp = cl->next; /* detach from chain */
 101 }
 102
 103
 104
 105 /* epoint sends a message to a call
 106  *
 107  */
 108 void Call::message_epoint(unsigned long epoint_id, int message_type, union parameter *param)
 109 {
 110 }
 111
 112
 113 /* call process is called from the main loop
 114  * it processes the current calling state.
 115  * returns 0 if call nothing was done
 116  */
 117 int Call::handler(void)
 118 {
 119         return(0);
 120 }
 121
 122 void Call::release(unsigned long epoint_id, int hold, int location, int cause)
 123 {
 124 }
 125
 126 /* free all call structures */
 127 void call_free(void)
 128 {
 129
 130         if (!call_first)
 131         {
 132                 PDEBUG(DEBUG_CALL, "no more pending call(s), done!\n");
 133                 return;
 134         }
 135         while(call_first)
 136         {
 137                 if (options.deb & DEBUG_CALL)
 138                 {
 139                         PDEBUG(DEBUG_CALL, "freeing pending call\n");
 140                 }
 141
 142                 delete call_first;
 143         }
 144 }
 145
 146
 147