167 lines
7.6 KiB
C++
167 lines
7.6 KiB
C++
/*****************************************************************************\
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** **
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** Linux Call Router **
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** **
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**---------------------------------------------------------------------------**
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** Copyright: Andreas Eversberg **
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** **
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** mISDN-port header file **
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** **
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\*****************************************************************************/
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#define FROMUP_BUFFER_SIZE 1024
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#define FROMUP_BUFFER_MASK 1023
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extern int entity;
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extern int mISDNdevice;
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enum {
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B_EVENT_USE, /* activate/export bchannel */
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B_EVENT_EXPORTREQUEST, /* remote app requests bchannel */
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B_EVENT_IMPORTREQUEST, /* remote app releases bchannel */
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B_EVENT_ACTIVATED, /* DL_ESTABLISH received */
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B_EVENT_DROP, /* deactivate/re-import bchannel */
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B_EVENT_DEACTIVATED, /* DL_RELEASE received */
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B_EVENT_EXPORTED, /* BCHANNEL_ASSIGN received */
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B_EVENT_IMPORTED, /* BCHANNEL_REMOVE received */
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B_EVENT_TIMEOUT, /* timeout for bchannel state */
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};
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/* mISDN port structure list */
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struct mISDNport {
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struct mlayer3 *ml3;
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struct mISDNport *next;
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char name[64]; /* name of port, if available */
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struct interface_port *ifport; /* link to interface_port */
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// int iftype; /* IF_* */
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// int multilink; /* if set, this port will not support callwaiting */
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int portnum; /* port number 1..n */
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int ptp; /* if ptp is set, we keep track of l2link */
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int l1link; /* if l1 is available (only works with nt-mode) */
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int l2link; /* if l2 is available (at PTP we take this serious) */
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int l2hold; /* set, if layer 2 must be hold/checked */
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time_t l2establish; /* time until establishing after link failure */
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int use; /* counts the number of port that uses this port */
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int ntmode; /* is TRUE if port is nt mode */
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int pri; /* is TRUE if port is a primary rate interface */
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int tones; /* TRUE if tones are sent outside connect state */
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int earlyb; /* TRUE if tones are received outside connect state */
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int b_num; /* number of bchannels */
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int b_reserved; /* number of bchannels reserved or in use */
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class PmISDN *b_port[128]; /* bchannel assigned to port object */
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struct mqueue upqueue;
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int b_socket[128];
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int b_mode[128]; /* B_MODE_* */
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int b_state[128]; /* statemachine, 0 = IDLE */
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double b_timer[128]; /* timer for state machine */
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int b_remote_id[128]; /* the socket currently exported (0=none) */
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unsigned int b_remote_ref[128]; /* the ref currently exported */
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int locally; /* local causes are sent as local causes not remote */
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int los, ais, rdi, slip_rx, slip_tx;
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};
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extern mISDNport *mISDNport_first;
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/*
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notes on bchannels:
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if a b-channel is in use, the b_port[channel] is linked to the port using it.
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also each used b-channel counts b_inuse.
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to assign a bchannel, that is not jet defined due to remote channel assignment,
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the b_inuse is also increased to reserve channel
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'use' is the number of port instances using this mISDNport. this counts also
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calls with no bchannel (call waiting, call on hold).
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*/
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/* mISDN none-object functions */
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int mISDN_initialize(void);
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void mISDN_deinitialize(void);
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struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, struct interface *interface);
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void mISDNport_close_all(void);
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void mISDNport_close(struct mISDNport *mISDNport);
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void mISDN_port_reorder(void);
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int mISDN_handler(void);
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void enc_ie_cause_standalone(struct l3_msg *l3m, int location, int cause);
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int stack2manager(struct mISDNport *mISDNport, unsigned int cmd, unsigned int pid, struct l3_msg *l3m);
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void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned int handle, unsigned int c1, unsigned int c2, const char *trace_name, int trace_value);
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void ph_control_block(struct mISDNport *mISDNport, unsigned int handle, unsigned int c1, void *c2, int c2_len, const char *trace_name, int trace_value);
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void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, const char *msgtext, int direction);
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void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int prim, int direction);
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void bchannel_event(struct mISDNport *mISDNport, int i, int event);
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void message_bchannel_from_remote(class JoinRemote *joinremote, int type, unsigned int handle);
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/* mISDN port classes */
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class PmISDN : public Port
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{
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public:
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PmISDN(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive, int mode);
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~PmISDN();
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void bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len);
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int handler(void);
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void transmit(unsigned char *buffer, int length);
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int message_epoint(unsigned int epoint_id, int message, union parameter *param);
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void message_mISDNsignal(unsigned int epoint_id, int message_id, union parameter *param);
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void message_crypt(unsigned int epoint_id, int message_id, union parameter *param);
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struct mISDNport *p_m_mISDNport; /* pointer to port */
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int p_m_delay; /* use delay instead of dejitter */
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int p_m_tx_gain, p_m_rx_gain; /* volume shift (0 = no change) */
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char p_m_pipeline[256]; /* filter pipeline */
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int p_m_echo, p_m_conf; /* remote echo, conference number */
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int p_m_tone; /* current kernel space tone */
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int p_m_rxoff; /* rx from driver is disabled */
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// int p_m_nodata; /* all parties within a conf are isdn ports, so pure bridging is possible */
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int p_m_txdata; /* get what we transmit */
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int p_m_dtmf; /* dtmf decoding is enabled */
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int p_m_joindata; /* the call requires data due to no briging capability */
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int p_m_load; /* current data in dsp tx buffer */
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unsigned int p_m_last_tv_sec; /* time stamp of last handler call, (to sync audio data */
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unsigned int p_m_last_tv_msec;
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// int p_m_fromup_buffer_readp; /* buffer for audio from remote endpoint */
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// int p_m_fromup_buffer_writep;
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// unsigned char p_m_fromup_buffer[FROMUP_BUFFER_SIZE];
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void txfromup(unsigned char *data, int length);
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int p_m_crypt; /* encryption is enabled */
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int p_m_crypt_msg_loops; /* sending a message */
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int p_m_crypt_msg_len;
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unsigned char p_m_crypt_msg[1100];
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int p_m_crypt_msg_current;
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unsigned char p_m_crypt_key[128];
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int p_m_crypt_key_len;
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int p_m_crypt_listen;
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int p_m_crypt_listen_state;
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int p_m_crypt_listen_len;
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unsigned char p_m_crypt_listen_msg[1100];
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unsigned int p_m_crypt_listen_crc;
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void cryptman_listen_bch(unsigned char *p, int l);
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void set_tone(const char *dir, const char *name);
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void set_echotest(int echotest);
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int p_m_portnum; /* used port number (1...n) */
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int p_m_b_index; /* index 0,1 0..29 */
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int p_m_b_channel; /* number 1,2 1..15,17... */
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int p_m_b_exclusive; /* if bchannel is exclusive */
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int p_m_b_reserve; /* set if channel is reserved */
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// long long p_m_jittercheck; /* time of audio data */
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// long long p_m_jitterdropped; /* number of bytes dropped */
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int p_m_b_mode; /* bchannel mode */
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int p_m_delete; /* true if obj. must del. */
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int p_m_hold; /* if port is on hold */
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unsigned int p_m_timeout; /* timeout of timers */
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time_t p_m_timer; /* start of timer */
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unsigned int p_m_remote_ref; /* join to export bchannel to */
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int p_m_remote_id; /* sock to export bchannel to */
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int seize_bchannel(int channel, int exclusive); /* requests / reserves / links bchannels, but does not open it! */
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void drop_bchannel(void);
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};
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extern unsigned char mISDN_rand[256]; /* noisy randomizer */
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