callpbx.h

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** call header file for pbx calls                                            **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12
  13 /* call
  14  *
  15  * calls connect interfaces together
  16  * calls are linked in a chain
  17  * interfaces can have 0, 1 or more references to a call
  18  * the call can have many references to interfaces
  19  * calls receive and send messages
  20  */
  21
  22 #define RECORD_BUFFER_SIZE      16000
  23
  24 enum { /* relation types */
  25         RELATION_TYPE_CALLING,  /* initiator of a call */
  26         RELATION_TYPE_SETUP,    /* interface which is to be set up */
  27         RELATION_TYPE_CONNECT,  /* interface is connected */
  28 };
  29
  30 enum { /* relation audio state */
  31         CHANNEL_STATE_CONNECT,  /* endpoint is connected to the call voice transmission in both dirs */
  32         CHANNEL_STATE_HOLD,     /* endpoint is on hold state, no audio */
  33 };
  34
  35 enum { /* states that results from last notification */
  36         NOTIFY_STATE_ACTIVE, /* just the normal case, the party is active */
  37         NOTIFY_STATE_SUSPEND, /* the party is inactive, because she has parked */
  38         NOTIFY_STATE_HOLD, /* the party is inactive, because she holds the line */
  39         NOTIFY_STATE_CONFERENCE, /* the parties joined a conference */
  40 };
  41
  42
  43 struct call_relation { /* relation to an interface */
  44         struct call_relation *next;     /* next node */
  45         int type;                       /* type of relation */
  46         unsigned long epoint_id;        /* interface to link call to */
  47         int channel_state;              /* if audio is available */
  48         int rx_state;                   /* current state of what we received from endpoint */
  49         int tx_state;                   /* current state of what we sent to endpoint */
  50 };
  51
  52 class CallPBX : public Call
  53 {
  54         public:
  55         CallPBX(class Endpoint *epoint);
  56         ~CallPBX();
  57         void message_epoint(unsigned long epoint_id, int message, union parameter *param);
  58         int handler(void);
  59         void release(unsigned long epoint_id, int hold, int location, int cause);
  60
  61         char c_caller[32];              /* caller number */
  62         char c_caller_id[32];           /* caller id to signal */
  63         char c_dialed[1024];            /* dial string of (all) number(s) */
  64         char c_todial[32];              /* overlap dialing (part not signalled yet) */
  65
  66         int c_pid;                      /* pid of call to generate bridge id */
  67         int c_updatebridge;             /* bridge must be updated */
  68         struct call_relation *c_relation; /* list of endpoints that are related to the call */
  69
  70         int c_partyline;                /* if set, call is conference room */
  71
  72         void bridge(void);
  73         void bridge_data(unsigned long epoint_from, struct call_relation *relation_from, union parameter *param);
  74         void remove_relation(struct call_relation *relation);
  75         struct call_relation *add_relation(void);
  76         int out_setup(unsigned long epoint_id, int message, union parameter *param, char *newnumber);
  77 };
  78
  79 void callpbx_debug(class CallPBX *callpbx, char *function);
  80 int callpbx_countrelations(unsigned long call_id);
  81 int track_notify(int oldstate, int notify);
  82