1 /*****************************************************************************\
3 ** Linux Call Router **
5 **---------------------------------------------------------------------------**
6 ** Copyright: Andreas Eversberg **
8 ** mISDN-port header file **
10 \*****************************************************************************/
12 #define FROMUP_BUFFER_SIZE 1024
13 #define FROMUP_BUFFER_MASK 1023
16 extern int mISDNdevice;
19 B_EVENT_USE, /* activate/export bchannel */
20 B_EVENT_EXPORTREQUEST, /* remote app requests bchannel */
21 B_EVENT_IMPORTREQUEST, /* remote app releases bchannel */
22 B_EVENT_ACTIVATED, /* DL_ESTABLISH received */
23 B_EVENT_DROP, /* deactivate/re-import bchannel */
24 B_EVENT_DEACTIVATED, /* DL_RELEASE received */
25 B_EVENT_EXPORTED, /* BCHANNEL_ASSIGN received */
26 B_EVENT_IMPORTED, /* BCHANNEL_REMOVE received */
27 B_EVENT_TIMEOUT, /* timeout for bchannel state */
30 /* mISDN port structure list */
33 struct mISDNport *next;
34 char name[64]; /* name of port, if available */
35 struct interface_port *ifport; /* link to interface_port */
36 // int iftype; /* IF_* */
37 // int multilink; /* if set, this port will not support callwaiting */
38 int portnum; /* port number 1..n */
39 int ptp; /* if ptp is set, we keep track of l2link */
40 int l1link; /* if l1 is available (only works with nt-mode) */
41 int l2link; /* if l2 is available (at PTP we take this serious) */
42 int l2hold; /* set, if layer 2 must be hold/checked */
43 time_t l2establish; /* time until establishing after link failure */
44 int use; /* counts the number of port that uses this port */
45 int ntmode; /* is TRUE if port is nt mode */
46 int pri; /* is TRUE if port is a primary rate interface */
47 int tones; /* TRUE if tones are sent outside connect state */
48 int earlyb; /* TRUE if tones are received outside connect state */
49 int b_num; /* number of bchannels */
50 int b_reserved; /* number of bchannels reserved or in use */
51 class PmISDN *b_port[128]; /* bchannel assigned to port object */
52 struct mqueue upqueue;
54 int b_state[128]; /* statemachine, 0 = IDLE */
55 double b_timer[128]; /* timer for state machine */
56 unsigned long b_remote_id[128]; /* the socket currently exported */
57 unsigned long b_remote_ref[128]; /* the ref currently exported */
58 int locally; /* local causes are sent as local causes not remote */
59 int los, ais, rdi, slip_rx, slip_tx;
61 extern mISDNport *mISDNport_first;
67 if a b-channel is in use, the b_port[channel] is linked to the port using it.
68 also each used b-channel counts b_inuse.
69 to assign a bchannel, that is not jet defined due to remote channel assignment,
70 the b_inuse is also increased to reserve channel
72 'use' is the number of port instances using this mISDNport. this counts also
73 calls with no bchannel (call waiting, call on hold).
78 /* mISDN none-object functions */
79 int mISDN_initialize(void);
80 void mISDN_deinitialize(void);
81 void mISDN_port_info(void);
82 struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, struct interface *interface);
83 void mISDNport_close_all(void);
84 void mISDNport_close(struct mISDNport *mISDNport);
85 void mISDN_port_reorder(void);
86 int mISDN_handler(void);
87 void enc_ie_cause_standalone(struct l3_msg *l3m, int location, int cause);
88 int stack2manager(struct mISDNport *mISDNport, unsigned int cmd, unsigned int pid, struct l3_msg *l3m);
89 void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long handle, unsigned long c1, unsigned long c2, char *trace_name, int trace_value);
90 void ph_control_block(struct mISDNport *mISDNport, unsigned long handle, unsigned long c1, void *c2, int c2_len, char *trace_name, int trace_value);
91 void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *msgtext, int direction);
92 void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned long prim, int direction);
93 void bchannel_event(struct mISDNport *mISDNport, int i, int event);
94 void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned long handle);
97 /* mISDN port classes */
98 class PmISDN : public Port
101 PmISDN(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive);
103 void bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len);
105 void transmit(unsigned char *buffer, int length);
106 int message_epoint(unsigned long epoint_id, int message, union parameter *param);
107 void message_mISDNsignal(unsigned long epoint_id, int message_id, union parameter *param);
108 void message_crypt(unsigned long epoint_id, int message_id, union parameter *param);
109 struct mISDNport *p_m_mISDNport; /* pointer to port */
110 int p_m_delay; /* use delay instead of dejitter */
111 int p_m_tx_gain, p_m_rx_gain; /* volume shift (0 = no change) */
112 char p_m_pipeline[256]; /* filter pipeline */
113 int p_m_echo, p_m_conf; /* remote echo, conference number */
114 int p_m_tone; /* current kernel space tone */
115 int p_m_rxoff; /* rx from driver is disabled */
116 // int p_m_nodata; /* all parties within a conf are isdn ports, so pure bridging is possible */
117 int p_m_txdata; /* get what we transmit */
118 int p_m_dtmf; /* dtmf decoding is enabled */
119 int p_m_joindata; /* the call requires data due to no briging capability */
121 int p_m_load; /* current data in dsp tx buffer */
122 unsigned long p_m_last_tv_sec; /* time stamp of last handler call, (to sync audio data */
123 unsigned long p_m_last_tv_msec;
124 // int p_m_fromup_buffer_readp; /* buffer for audio from remote endpoint */
125 // int p_m_fromup_buffer_writep;
126 // unsigned char p_m_fromup_buffer[FROMUP_BUFFER_SIZE];
127 void txfromup(unsigned char *data, int length);
129 int p_m_crypt; /* encryption is enabled */
130 int p_m_crypt_msg_loops; /* sending a message */
131 int p_m_crypt_msg_len;
132 unsigned char p_m_crypt_msg[1100];
133 int p_m_crypt_msg_current;
134 unsigned char p_m_crypt_key[128];
135 int p_m_crypt_key_len;
136 int p_m_crypt_listen;
137 int p_m_crypt_listen_state;
138 int p_m_crypt_listen_len;
139 unsigned char p_m_crypt_listen_msg[1100];
140 unsigned long p_m_crypt_listen_crc;
141 void cryptman_listen_bch(unsigned char *p, int l);
143 void set_tone(char *dir, char *name);
144 void set_echotest(int echotest);
146 int p_m_portnum; /* used port number (1...n) */
147 int p_m_b_index; /* index 0,1 0..29 */
148 int p_m_b_channel; /* number 1,2 1..15,17... */
149 int p_m_b_exclusive; /* if bchannel is exclusive */
150 int p_m_b_reserve; /* set if channel is reserved */
151 // long long p_m_jittercheck; /* time of audio data */
152 // long long p_m_jitterdropped; /* number of bytes dropped */
153 int p_m_delete; /* true if obj. must del. */
154 int p_m_hold; /* if port is on hold */
155 unsigned long p_m_timeout; /* timeout of timers */
156 time_t p_m_timer; /* start of timer */
157 unsigned char p_m_remote_ref; /* join to export bchannel to */
158 unsigned char p_m_remote_id; /* sock to export bchannel to */
160 int seize_bchannel(int channel, int exclusive); /* requests / reserves / links bchannels, but does not open it! */
161 void drop_bchannel(void);
164 extern unsigned char mISDN_rand[256]; /* noisy randomizer */