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 int b_remote_id[128]; /* the socket currently exported (0=none) */
57 unsigned int 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 struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, struct interface *interface);
82 void mISDNport_close_all(void);
83 void mISDNport_close(struct mISDNport *mISDNport);
84 void mISDN_port_reorder(void);
85 int mISDN_handler(void);
86 void enc_ie_cause_standalone(struct l3_msg *l3m, int location, int cause);
87 int stack2manager(struct mISDNport *mISDNport, unsigned int cmd, unsigned int pid, struct l3_msg *l3m);
88 void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned int handle, unsigned int c1, unsigned int c2, char *trace_name, int trace_value);
89 void ph_control_block(struct mISDNport *mISDNport, unsigned int handle, unsigned int c1, void *c2, int c2_len, char *trace_name, int trace_value);
90 void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *msgtext, int direction);
91 void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int prim, int direction);
92 void bchannel_event(struct mISDNport *mISDNport, int i, int event);
93 void message_bchannel_from_remote(class JoinRemote *joinremote, int type, unsigned int handle);
96 /* mISDN port classes */
97 class PmISDN : public Port
100 PmISDN(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive);
102 void bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len);
104 void transmit(unsigned char *buffer, int length);
105 int message_epoint(unsigned int epoint_id, int message, union parameter *param);
106 void message_mISDNsignal(unsigned int epoint_id, int message_id, union parameter *param);
107 void message_crypt(unsigned int epoint_id, int message_id, union parameter *param);
108 struct mISDNport *p_m_mISDNport; /* pointer to port */
109 int p_m_delay; /* use delay instead of dejitter */
110 int p_m_tx_gain, p_m_rx_gain; /* volume shift (0 = no change) */
111 char p_m_pipeline[256]; /* filter pipeline */
112 int p_m_echo, p_m_conf; /* remote echo, conference number */
113 int p_m_tone; /* current kernel space tone */
114 int p_m_rxoff; /* rx from driver is disabled */
115 // int p_m_nodata; /* all parties within a conf are isdn ports, so pure bridging is possible */
116 int p_m_txdata; /* get what we transmit */
117 int p_m_dtmf; /* dtmf decoding is enabled */
118 int p_m_joindata; /* the call requires data due to no briging capability */
120 int p_m_load; /* current data in dsp tx buffer */
121 unsigned int p_m_last_tv_sec; /* time stamp of last handler call, (to sync audio data */
122 unsigned int p_m_last_tv_msec;
123 // int p_m_fromup_buffer_readp; /* buffer for audio from remote endpoint */
124 // int p_m_fromup_buffer_writep;
125 // unsigned char p_m_fromup_buffer[FROMUP_BUFFER_SIZE];
126 void txfromup(unsigned char *data, int length);
128 int p_m_crypt; /* encryption is enabled */
129 int p_m_crypt_msg_loops; /* sending a message */
130 int p_m_crypt_msg_len;
131 unsigned char p_m_crypt_msg[1100];
132 int p_m_crypt_msg_current;
133 unsigned char p_m_crypt_key[128];
134 int p_m_crypt_key_len;
135 int p_m_crypt_listen;
136 int p_m_crypt_listen_state;
137 int p_m_crypt_listen_len;
138 unsigned char p_m_crypt_listen_msg[1100];
139 unsigned int p_m_crypt_listen_crc;
140 void cryptman_listen_bch(unsigned char *p, int l);
142 void set_tone(char *dir, char *name);
143 void set_echotest(int echotest);
145 int p_m_portnum; /* used port number (1...n) */
146 int p_m_b_index; /* index 0,1 0..29 */
147 int p_m_b_channel; /* number 1,2 1..15,17... */
148 int p_m_b_exclusive; /* if bchannel is exclusive */
149 int p_m_b_reserve; /* set if channel is reserved */
150 // long long p_m_jittercheck; /* time of audio data */
151 // long long p_m_jitterdropped; /* number of bytes dropped */
152 int p_m_delete; /* true if obj. must del. */
153 int p_m_hold; /* if port is on hold */
154 unsigned int p_m_timeout; /* timeout of timers */
155 time_t p_m_timer; /* start of timer */
156 unsigned int p_m_remote_ref; /* join to export bchannel to */
157 int p_m_remote_id; /* sock to export bchannel to */
159 int seize_bchannel(int channel, int exclusive); /* requests / reserves / links bchannels, but does not open it! */
160 void drop_bchannel(void);
163 extern unsigned char mISDN_rand[256]; /* noisy randomizer */