183 lines
8.0 KiB
C++
183 lines
8.0 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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extern int mISDNsocket;
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enum {
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B_EVENT_USE, /* activate bchannel */
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B_EVENT_ACTIVATED, /* DL_ESTABLISH received */
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B_EVENT_DROP, /* deactivate bchannel */
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B_EVENT_DEACTIVATED, /* DL_RELEASE received */
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B_EVENT_TIMEOUT, /* timeout happed during (de)activation */
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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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unsigned char l2mask[16]; /* 128 bits for each tei */
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int l1hold; /* set, if layer 1 should be holt */
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int l2hold; /* set, if layer 2 must be hold/checked */
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struct lcr_timer 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 tespecial; /* is TRUE if port uses special TE mode */
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int pri; /* is TRUE if port is a primary rate interface */
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int pots; /* is TRUE if port is of type POTS */
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struct lcr_fd pots_sock; /* socket for L1 */
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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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struct lcr_fd b_sock[128]; /* socket list elements */
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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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struct lcr_timer b_timer[128]; /* timer for bchannel state machine */
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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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/* ss5 */
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unsigned int ss5; /* set, if SS5 signalling enabled, also holds feature bits */
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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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int mISDN_getportbyname(int sock, int cnt, char *portname);
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struct mISDNport *mISDNport_open(struct interface_port *ifport);
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void mISDNport_static(struct mISDNport *mISDNport);
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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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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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/* 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, struct interface *interface, 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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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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void message_vootp(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_dejitter; /* use dejitter on transmit data to DSP */
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int p_m_disable_dejitter; /* usefull to send fax via bridge */
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int p_m_preload; /* set to ISDN_LOAD, but may be changed later */
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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_mute; /* if set, conf is disconnected */
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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_txdata; /* get what we transmit */
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int p_m_dtmf; /* dtmf decoding is enabled */
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int p_m_dtmf_threshold; /* dtmf level threshold */
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int bridge_rx(unsigned char *data, int len);
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struct lcr_timer p_m_loadtimer; /* timer for audio transmission */
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virtual void update_load(void);
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void load_tx(void);
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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 tx_load call, (to sync audio data */
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unsigned int p_m_last_tv_msec;
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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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void set_conf(int oldconf, int newconf);
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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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int p_m_b_mode; /* bchannel mode */
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int p_m_hold; /* if port is on hold */
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struct lcr_timer p_m_timeout; /* timeout of timers */
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int p_m_inband_send_on; /* triggers optional send function */
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int p_m_inband_receive_on; /* triggers optional receive function */
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int p_m_mute_on; /* if mute is on, bridge is removed */
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virtual int inband_send(unsigned char *buffer, int len);
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void inband_send_on(void);
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void inband_send_off(void);
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virtual void inband_receive(unsigned char *buffer, int len);
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void inband_receive_on(void);
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void inband_receive_off(void);
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void mute_on(void);
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void mute_off(void);
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void update_rxoff(void);
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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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