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;
18 /* mISDN port structure list */
23 net_stack_t nst; /* MUST be the first entry, so &nst equals &mISDNlist */
25 int upper_id; /* id to transfer data down */
26 int lower_id; /* id to transfer data up */
28 msg_queue_t downqueue; /* l4->l3 */
30 struct mISDNport *next;
31 char name[64]; /* name of port, if available */
32 struct interface_port *ifport; /* link to interface_port */
33 // int iftype; /* IF_* */
34 // int multilink; /* if set, this port will not support callwaiting */
35 int portnum; /* port number 1..n */
36 int ptp; /* if ptp is set, we keep track of l2link */
37 int l1link; /* if l1 is available (only works with nt-mode) */
38 int l2link; /* if l2 is available (at PTP we take this serious) */
39 // time_t l1timeout; /* timout when establishing link */
40 time_t l2establish; /* time until establishing after link failure */
41 int use; /* counts the number of port that uses this port */
42 int ntmode; /* is TRUE if port is nt mode */
43 int pri; /* is TRUE if port is a primary rate interface */
44 int tones; /* TRUE if tones are sent outside connect state */
45 int earlyb; /* TRUE if tones are received outside connect state */
46 int b_num; /* number of bchannels */
47 int b_reserved; /* number of bchannels reserved or in use */
48 class PmISDN *b_port[128]; /* bchannel assigned to port object */
53 unsigned long b_addr[128];
55 int b_state[128]; /* statemachine, 0 = IDLE */
56 unsigned long b_remote_id[128]; /* the socket currently exported */
57 unsigned long b_remote_ref[128]; /* the ref currently exported */
58 int procids[128]; /* keep track of free ids */
59 int locally; /* local causes are sent as local causes not remote */
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 ptmp, int force_nt, 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(unsigned char **ntmode, msg_t *msg, int location, int cause);
88 void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long handle, unsigned long c1, unsigned long c2, char *trace_name, int trace_value);
89 void ph_control_block(struct mISDNport *mISDNport, unsigned long handle, unsigned long c1, void *c2, int c2_len, char *trace_name, int trace_value);
90 msg_t *create_l2msg(int prim, int dinfo, int size);
91 void setup_queue(struct mISDNport *mISDNport, int link);
92 int stack2manager_nt(void *dat, void *arg);
93 int stack2manager_te(struct mISDNport *mISDNport, msg_t *msg);
94 void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *msgtext, int direction);
95 void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned long prim, int direction);
96 void bchannel_event(struct mISDNport *mISDNport, int i, int event);
97 void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned long handle);
100 /* mISDN port classes */
101 class PmISDN : public Port
104 PmISDN(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive);
106 void bchannel_receive(iframe_t *frm);
108 void transmit(unsigned char *buffer, int length);
109 int message_epoint(unsigned long epoint_id, int message, union parameter *param);
110 void message_mISDNsignal(unsigned long epoint_id, int message_id, union parameter *param);
111 void message_crypt(unsigned long epoint_id, int message_id, union parameter *param);
112 struct mISDNport *p_m_mISDNport; /* pointer to port */
113 int p_m_delay; /* use delay instead of dejitter */
114 int p_m_tx_gain, p_m_rx_gain; /* volume shift (0 = no change) */
115 char p_m_pipeline[256]; /* filter pipeline */
116 int p_m_echo, p_m_conf; /* remote echo, conference number */
117 int p_m_tone; /* current kernel space tone */
118 int p_m_rxoff; /* rx from driver is disabled */
119 // int p_m_nodata; /* all parties within a conf are isdn ports, so pure bridging is possible */
120 int p_m_txdata; /* get what we transmit */
121 int p_m_dtmf; /* dtmf decoding is enabled */
122 int p_m_joindata; /* the call requires data due to no briging capability */
124 int p_m_load; /* current data in dsp tx buffer */
125 unsigned long p_m_last_tv_sec; /* time stamp of last handler call, (to sync audio data */
126 unsigned long p_m_last_tv_msec;
127 // int p_m_fromup_buffer_readp; /* buffer for audio from remote endpoint */
128 // int p_m_fromup_buffer_writep;
129 // unsigned char p_m_fromup_buffer[FROMUP_BUFFER_SIZE];
130 void txfromup(unsigned char *data, int length);
132 int p_m_crypt; /* encryption is enabled */
133 int p_m_crypt_msg_loops; /* sending a message */
134 int p_m_crypt_msg_len;
135 unsigned char p_m_crypt_msg[1100];
136 int p_m_crypt_msg_current;
137 unsigned char p_m_crypt_key[128];
138 int p_m_crypt_key_len;
139 int p_m_crypt_listen;
140 int p_m_crypt_listen_state;
141 int p_m_crypt_listen_len;
142 unsigned char p_m_crypt_listen_msg[1100];
143 unsigned long p_m_crypt_listen_crc;
144 void cryptman_listen_bch(unsigned char *p, int l);
146 void set_tone(char *dir, char *name);
147 void set_echotest(int echotest);
149 int p_m_portnum; /* used port number (1...n) */
150 int p_m_b_index; /* index 0,1 0..29 */
151 int p_m_b_channel; /* number 1,2 1..15,17... */
152 int p_m_b_exclusive; /* if bchannel is exclusive */
153 int p_m_b_reserve; /* set if channel is reserved */
154 // long long p_m_jittercheck; /* time of audio data */
155 // long long p_m_jitterdropped; /* number of bytes dropped */
156 int p_m_delete; /* true if obj. must del. */
157 int p_m_hold; /* if port is on hold */
158 unsigned long p_m_timeout; /* timeout of timers */
159 time_t p_m_timer; /* start of timer */
160 unsigned char p_m_remote_ref; /* join to export bchannel to */
161 unsigned char p_m_remote_id; /* sock to export bchannel to */
163 int seize_bchannel(int channel, int exclusive); /* requests / reserves / links bchannels, but does not open it! */
164 void drop_bchannel(void);
167 extern unsigned char mISDN_rand[256]; /* noisy randomizer */