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(void)
  55 {
  56         class Call **callp;
  57
  58         c_serial = call_serial++;
  59         c_type = CALL_TYPE_NONE;
  60
  61         /* attach to chain */
  62         next = NULL;
  63         callp = &call_first;
  64         while(*callp)
  65                 callp = &((*callp)->next);
  66         *callp = this;
  67
  68         classuse++;
  69 }
  70
  71
  72 /*
  73  * call descructor
  74  */
  75 Call::~Call()
  76 {
  77         class Call *cl, **clp;
  78
  79         classuse--;
  80
  81         cl = call_first;
  82         clp = &call_first;
  83         while(cl)
  84         {
  85                 if (cl == this)
  86                         break;
  87                 clp = &cl->next;
  88                 cl = cl->next;
  89         }
  90         if (!cl)
  91                 FATAL("software error, call not in chain!\n");
  92         *clp = cl->next; /* detach from chain */
  93 }
  94
  95
  96
  97 /* epoint sends a message to a call
  98  *
  99  */
 100 void Call::message_epoint(unsigned long epoint_id, int message_type, union parameter *param)
 101 {
 102 }
 103
 104
 105 /* call process is called from the main loop
 106  * it processes the current calling state.
 107  * returns 0 if call nothing was done
 108  */
 109 int Call::handler(void)
 110 {
 111         return(0);
 112 }
 113
 114 /* free all call structures */
 115 void call_free(void)
 116 {
 117
 118         if (!call_first)
 119         {
 120                 PDEBUG(DEBUG_CALL, "no more pending call(s), done!\n");
 121                 return;
 122         }
 123         while(call_first)
 124         {
 125                 if (options.deb & DEBUG_CALL)
 126                 {
 127                         PDEBUG(DEBUG_CALL, "freeing pending call\n");
 128                 }
 129
 130                 delete call_first;
 131         }
 132 }
 133
 134
 135