ss5.h

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** LCR                                                                       **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** ss5-port header file                                                      **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #define SS5_ENABLE                      0x00000001 /* if ccitt5 is defined in interface.conf */
  13 #define SS5_FEATURE_CONNECT             0x00000002 /* send connect to originator of the call */
  14 #define SS5_FEATURE_NODISCONNECT        0x00000004 /* do not send disconnect to originator of call */
  15 #define SS5_FEATURE_RELEASEGUARDTIMER   0x00000008 /* prevent blueboxing by forcing long duration of releas guard signal */
  16 #define SS5_FEATURE_BELL                0x00000010 /* allow breaking and pulse dialing using 2600 Hz */
  17 #define SS5_FEATURE_PULSEDIALING        0x00000020 /* outgoing exchange sends 2600 Hz pulses instead of mf tones */
  18 #define SS5_FEATURE_DELAY               0x00000040 /* simulate round trip delay by delaying decoder output */
  19 #define SS5_FEATURE_RELEASE             0x00000080 /* release if incomming exchange disconnets */
  20 #define SS5_FEATURE_MUTE                0x00000100 /* mute audio path while 2600/2400 Hz tones are detected */
  21 #define SS5_FEATURE_QUALITY             0x00000200 /* indicate quality of received digits */
  22
  23 /* SS5 port classes */
  24 class Pss5 : public PmISDN
  25 {
  26         public:
  27         Pss5(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, struct interface *interface, int channel, int exclusive, int mode);
  28         ~Pss5();
  29         int message_epoint(unsigned int epoint_id, int message, union parameter *param);
  30         void set_tone(const char *dir, const char *name);
  31
  32         int p_m_s_state; /* current signalling state */
  33         int p_m_s_signal; /* current state of current signal */
  34         char p_m_s_dial[64]; /* current dialing register */
  35         int p_m_s_digit_i; /* current digit of register counter */
  36         int p_m_s_pulsecount; /* counts pule dialing half cycles */
  37         char p_m_s_last_digit; /* stores last digit that was detected, to fill short signal losses */
  38         char p_m_s_last_digit_used; /* stores last digit that was used, to ignore short changes of signal due to noise */
  39         int p_m_s_signal_loss; /* sample counter for loss of signal check */
  40         int p_m_s_decoder_count; /* samples currently decoded */
  41         unsigned char p_m_s_decoder_buffer[SS5_DECODER_NPOINTS]; /* buffer for storing one goertzel window */
  42         unsigned char p_m_s_delay_digits[3000/SS5_DECODER_NPOINTS]; /* delay buffer for received digits */
  43         unsigned char p_m_s_delay_mute[400/SS5_DECODER_NPOINTS]; /* 40 ms delay on mute, so a 'chirp' can be heared */
  44         int p_m_s_sample_nr; /* decoder's sample number, counter */
  45         double p_m_s_quality_value; /* quality report */
  46         int p_m_s_quality_count; /* quality report */
  47         int p_m_s_recog; /* sample counter to wait for signal recognition time */
  48         struct lcr_work p_m_s_queue;
  49         int p_m_s_queued_signal; /* queued signal */
  50         struct lcr_timer p_m_s_timer; /* dialing timeout */
  51
  52         void new_state(int state);              /* set new state */
  53         void _new_ss5_state(int state, const char *func, int line);
  54         void _new_ss5_signal(int signal, const char *func, int line);
  55         void inband_receive(unsigned char *buffer, int len);
  56         int inband_send(unsigned char *buffer, int len);
  57         int inband_dial_mf(unsigned char *buffer, int len, int count);
  58         int inband_dial_pulse(unsigned char *buffer, int len, int count);
  59         void start_signal(int);
  60         void start_outgoing(void);
  61         void do_release(int cause, int location, int signal);
  62         void do_setup(char *digit, int complete);
  63
  64         void seizing_ind(void);
  65         void digit_ind(char digit);
  66         void pulse_ind(int on);
  67         void proceed_to_send_ind(void);
  68         void busy_flash_ind(void);
  69         void answer_ind(void);
  70         void forward_ind(void);
  71         void clear_back_ind(void);
  72         void clear_forward_ind(void);
  73         void release_guard_ind(void);
  74         void double_seizure_ind(void);
  75         void forward_transfer_ind(void);
  76         void message_setup(unsigned int epoint_id, int message_id, union parameter *param);
  77         void message_connect(unsigned int epoint_id, int message_id, union parameter *param);
  78         void message_disconnect(unsigned int epoint_id, int message_id, union parameter *param);
  79         void message_release(unsigned int epoint_id, int message_id, union parameter *param);
  80
  81         void register_timeout(void);
  82         void process_queue(void);
  83
  84 };
  85
  86 #define new_ss5_state(a) _new_ss5_state(a, __FUNCTION__, __LINE__)
  87 #define new_ss5_signal(a) _new_ss5_signal(a, __FUNCTION__, __LINE__)
  88
  89 void ss5_create_channel(struct mISDNport *mISDNport, int i);
  90 class Pss5 *ss5_hunt_line(struct mISDNport *mISDNport);
  91