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chan_dahdi.c 中dahdi_pvt的定义

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static struct dahdi_pvt {
 ast_mutex_t lock;
 struct ast_channel *owner;   /*!< Our current active owner (if applicable) */
       /*!< Up to three channels can be associated with this call */
  
 struct dahdi_subchannel sub_unused;  /*!< Just a safety precaution */
 struct dahdi_subchannel subs[3];   /*!< Sub-channels */
 struct dahdi_confinfo saveconf;   /*!< Saved conference info */

 struct dahdi_pvt *slaves[MAX_SLAVES];  /*!< Slave to us (follows our conferencing) */
 struct dahdi_pvt *master;    /*!< Master to us (we follow their conferencing) */
 int inconference;    /*!< If our real should be in the conference */
 
 int buf_no;     /*!< Number of buffers */
 int buf_policy;    /*!< Buffer policy */
 int sig;     /*!< Signalling style */
 /*!
  * \brief Nonzero if the signaling type is sent over a radio.
  * \note Set to a couple of nonzero values but it is only tested like a boolean.
  */
 int radio;
 int outsigmod;     /*!< Outbound Signalling style (modifier) */
 int oprmode;     /*!< "Operator Services" mode */
 struct dahdi_pvt *oprpeer;    /*!< "Operator Services" peer tech_pvt ptr */
 /*! \brief Rx gain set by chan_dahdi.conf */
 float rxgain;
 /*! \brief Tx gain set by chan_dahdi.conf */
 float txgain;
 int tonezone;     /*!< tone zone for this chan, or -1 for default */
 struct dahdi_pvt *next;    /*!< Next channel in list */
 struct dahdi_pvt *prev;    /*!< Prev channel in list */

 /* flags */

 /*!
  * \brief TRUE if ADSI (Analog Display Services Interface) available
  * \note Set from the "adsi" value read in from chan_dahdi.conf
  */
 unsigned int adsi:1;
 /*!
  * \brief TRUE if we can use a polarity reversal to mark when an outgoing
  * call is answered by the remote party.
  * \note Set from the "answeronpolarityswitch" value read in from chan_dahdi.conf
  */
 unsigned int answeronpolarityswitch:1;
 /*!
  * \brief TRUE if busy detection is enabled.
  * (Listens for the beep-beep busy pattern.)
  * \note Set from the "busydetect" value read in from chan_dahdi.conf
  */
 unsigned int busydetect:1;
 /*!
  * \brief TRUE if call return is enabled.
  * (*69, if your dialplan doesn't catch this first)
  * \note Set from the "callreturn" value read in from chan_dahdi.conf
  */
 unsigned int callreturn:1;
 /*!
  * \brief TRUE if busy extensions will hear the call-waiting tone
  * and can use hook-flash to switch between callers.
  * \note Can be disabled by dialing *70.
  * \note Initialized with the "callwaiting" value read in from chan_dahdi.conf
  */
 unsigned int callwaiting:1;
 /*!
  * \brief TRUE if send caller ID for Call Waiting
  * \note Set from the "callwaitingcallerid" value read in from chan_dahdi.conf
  */
 unsigned int callwaitingcallerid:1;
 /*!
  * \brief TRUE if support for call forwarding enabled.
  * Dial *72 to enable call forwarding.
  * Dial *73 to disable call forwarding.
  * \note Set from the "cancallforward" value read in from chan_dahdi.conf
  */
 unsigned int cancallforward:1;
 /*!
  * \brief TRUE if support for call parking is enabled.
  * \note Set from the "canpark" value read in from chan_dahdi.conf
  */
 unsigned int canpark:1;
 /*! \brief TRUE if to wait for a DTMF digit to confirm answer */
 unsigned int confirmanswer:1;
 /*!
  * \brief TRUE if the channel is to be destroyed on hangup.
  * (Used by pseudo channels.)
  */
 unsigned int destroy:1;
 unsigned int didtdd:1;    /*!< flag to say its done it once */
 /*! \brief TRUE if analog type line dialed no digits in Dial() */
 unsigned int dialednone:1;
 /*! \brief TRUE if in the process of dialing digits or sending something. */
 unsigned int dialing:1;
 /*! \brief TRUE if the transfer capability of the call is digital. */
 unsigned int digital:1;
 /*! \brief TRUE if Do-Not-Disturb is enabled. */
 unsigned int dnd:1;
 /*! \brief XXX BOOLEAN Purpose??? */
 unsigned int echobreak:1;
 /*!
  * \brief TRUE if echo cancellation enabled when bridged.
  * \note Initialized with the "echocancelwhenbridged" value read in from chan_dahdi.conf
  * \note Disabled if the echo canceller is not setup.
  */
 unsigned int echocanbridged:1;
 /*! \brief TRUE if echo cancellation is turned on. */
 unsigned int echocanon:1;
 /*! \brief TRUE if a fax tone has already been handled. */
 unsigned int faxhandled:1;
 /*! \brief TRUE if over a radio and dahdi_read() has been called. */
 unsigned int firstradio:1;
 /*!
  * \brief TRUE if the call will be considered "hung up" on a polarity reversal.
  * \note Set from the "hanguponpolarityswitch" value read in from chan_dahdi.conf
  */
 unsigned int hanguponpolarityswitch:1;
 /*! \brief TRUE if DTMF detection needs to be done by hardware. */
 unsigned int hardwaredtmf:1;
 /*!
  * \brief TRUE if the outgoing caller ID is blocked/hidden.
  * \note Caller ID can be disabled by dialing *67.
  * \note Caller ID can be enabled by dialing *82.
  * \note Initialized with the "hidecallerid" value read in from chan_dahdi.conf
  */
 unsigned int hidecallerid:1;
 /*!
  * \brief TRUE if hide just the name not the number for legacy PBX use.
  * \note Only applies to PRI channels.
  * \note Set from the "hidecalleridname" value read in from chan_dahdi.conf
  */
 unsigned int hidecalleridname:1;
 /*! \brief TRUE if DTMF detection is disabled. */
 unsigned int ignoredtmf:1;
 /*!
  * \brief TRUE if the channel should be answered immediately
  * without attempting to gather any digits.
  * \note Set from the "immediate" value read in from chan_dahdi.conf
  */
 unsigned int immediate:1;
 /*! \brief TRUE if in an alarm condition. */
 unsigned int inalarm:1;
 unsigned int unknown_alarm:1;
 /*! \brief TRUE if TDD in MATE mode */
 unsigned int mate:1;
 /*! \brief TRUE if we originated the call leg. */
 unsigned int outgoing:1;
 /* unsigned int overlapdial:1;    unused and potentially confusing */
 /*!
  * \brief TRUE if busy extensions will hear the call-waiting tone
  * and can use hook-flash to switch between callers.
  * \note Set from the "callwaiting" value read in from chan_dahdi.conf
  */
 unsigned int permcallwaiting:1;
 /*!
  * \brief TRUE if the outgoing caller ID is blocked/restricted/hidden.
  * \note Set from the "hidecallerid" value read in from chan_dahdi.conf
  */
 unsigned int permhidecallerid:1;
 /*!
  * \brief TRUE if PRI congestion/busy indications are sent out-of-band.
  * \note Set from the "priindication" value read in from chan_dahdi.conf
  */
 unsigned int priindication_oob:1;
 /*!
  * \brief TRUE if PRI B channels are always exclusively selected.
  * \note Set from the "priexclusive" value read in from chan_dahdi.conf
  */
 unsigned int priexclusive:1;
 /*!
  * \brief TRUE if we will pulse dial.
  * \note Set from the "pulsedial" value read in from chan_dahdi.conf
  */
 unsigned int pulse:1;
 /*! \brief TRUE if a pulsed digit was detected. (Pulse dial phone detected) */
 unsigned int pulsedial:1;
 unsigned int restartpending:1;  /*!< flag to ensure counted only once for restart */
 /*!
  * \brief TRUE if caller ID is restricted.
  * \note Set but not used.  Should be deleted.  Redundant with permhidecallerid.
  * \note Set from the "restrictcid" value read in from chan_dahdi.conf
  */
 unsigned int restrictcid:1;
 /*!
  * \brief TRUE if three way calling is enabled
  * \note Set from the "threewaycalling" value read in from chan_dahdi.conf
  */
 unsigned int threewaycalling:1;
 /*!
  * \brief TRUE if call transfer is enabled
  * \note For FXS ports (either direct analog or over T1/E1):
  *   Support flash-hook call transfer
  * \note For digital ports using ISDN PRI protocols:
  *   Support switch-side transfer (called 2BCT, RLT or other names)
  * \note Set from the "transfer" value read in from chan_dahdi.conf
  */
 unsigned int transfer:1;
 /*!
  * \brief TRUE if caller ID is used on this channel.
  * \note PRI spans will save caller ID from the networking peer.
  * \note FXS ports will generate the caller ID spill.
  * \note FXO ports will listen for the caller ID spill.
  * \note Set from the "usecallerid" value read in from chan_dahdi.conf
  */
 unsigned int use_callerid:1;
 /*!
  * \brief TRUE if we will use the calling presentation setting
  * from the Asterisk channel for outgoing calls.
  * \note Only applies to PRI channels.
  * \note Set from the "usecallingpres" value read in from chan_dahdi.conf
  */
 unsigned int use_callingpres:1;
 /*!
  * \brief TRUE if distinctive rings are to be detected.
  * \note For FXO lines
  * \note Set indirectly from the "usedistinctiveringdetection" value read in from chan_dahdi.conf
  */
 unsigned int usedistinctiveringdetection:1;
 /*!
  * \brief TRUE if we should use the callerid from incoming call on dahdi transfer.
  * \note Set from the "useincomingcalleridondahditransfer" value read in from chan_dahdi.conf
  */
 unsigned int dahditrcallerid:1;
 /*!
  * \brief TRUE if allowed to flash-transfer to busy channels.
  * \note Set from the "transfertobusy" value read in from chan_dahdi.conf
  */
 unsigned int transfertobusy:1;
#if defined(HAVE_PRI)
 /*! \brief TRUE if channel is alerting/ringing */
 unsigned int alerting:1;
 /*! \brief TRUE if the call has already gone/hungup */
 unsigned int alreadyhungup:1;
 /*!
  * \brief TRUE if this is an idle call
  * \note Applies to PRI channels.
  */
 unsigned int isidlecall:1;
 /*!
  * \brief TRUE if call is in a proceeding state.
  * The call has started working its way through the network.
  */
 unsigned int proceeding:1;
 /*! \brief TRUE if the call has seen progress through the network. */
 unsigned int progress:1;
 /*!
  * \brief TRUE if this channel is being reset/restarted
  * \note Applies to PRI channels.
  */
 unsigned int resetting:1;
 /*!
  * \brief TRUE if this channel has received a SETUP_ACKNOWLEDGE
  * \note Applies to PRI channels.
  */
 unsigned int setup_ack:1;
#endif
 /*!
  * \brief TRUE if SMDI (Simplified Message Desk Interface) is enabled
  * \note Set from the "usesmdi" value read in from chan_dahdi.conf
  */
 unsigned int use_smdi:1;
 /*! \brief The serial port to listen for SMDI data on */
 struct ast_smdi_interface *smdi_iface;

 /*! \brief Distinctive Ring data */
 struct dahdi_distRings drings;

 /*!
  * \brief The configured context for incoming calls.
  * \note The "context" string read in from chan_dahdi.conf
  */
 char context[AST_MAX_CONTEXT];
 /*!
  * \brief Saved context string.
  */
 char defcontext[AST_MAX_CONTEXT];
 /*! \brief Extension to use in the dialplan. */
 char exten[AST_MAX_EXTENSION];
 /*!
  * \brief Language configured for calls.
  * \note The "language" string read in from chan_dahdi.conf
  */
 char language[MAX_LANGUAGE];
 /*!
  * \brief The configured music-on-hold class to use for calls.
  * \note The "musicclass" or "mohinterpret" or "musiconhold" string read in from chan_dahdi.conf
  */
 char mohinterpret[MAX_MUSICCLASS];
 /*!
  * \brief Sugggested music-on-hold class for peer channel to use for calls.
  * \note The "mohsuggest" string read in from chan_dahdi.conf
  */
 char mohsuggest[MAX_MUSICCLASS];
#ifdef PRI_ANI
 /*! \brief Automatic Number Identification number (Alternate PRI caller ID number) */
 char cid_ani[AST_MAX_EXTENSION];
#endif
 /*! \brief Caller ID number from an incoming call. */
 char cid_num[AST_MAX_EXTENSION];
 /*! \brief Caller ID Q.931 TON/NPI field values.  Set by PRI. Zero otherwise. */
 int cid_ton;
 /*! \brief Caller ID name from an incoming call. */
 char cid_name[AST_MAX_EXTENSION];
 /*! \brief Last Caller ID number from an incoming call. */
 char lastcid_num[AST_MAX_EXTENSION];
 /*! \brief Last Caller ID name from an incoming call. */
 char lastcid_name[AST_MAX_EXTENSION];
 char *origcid_num;    /*!< malloced original callerid */
 char *origcid_name;    /*!< malloced original callerid */
 /*! \brief Call waiting number. */
 char callwait_num[AST_MAX_EXTENSION];
 /*! \brief Call waiting name. */
 char callwait_name[AST_MAX_EXTENSION];
 /*! \brief Redirecting Directory Number Information Service (RDNIS) number */
 char rdnis[AST_MAX_EXTENSION];
 /*! \brief Dialed Number Identifier */
 char dnid[AST_MAX_EXTENSION];
 /*!
  * \brief Bitmapped groups this belongs to.
  * \note The "group" bitmapped group string read in from chan_dahdi.conf
  */
 ast_group_t group;
 /*! \brief Active PCM encoding format: DAHDI_LAW_ALAW or DAHDI_LAW_MULAW */
 int law;
 int confno;     /*!< Our conference */
 int confusers;     /*!< Who is using our conference */
 int propconfno;     /*!< Propagated conference number */
 /*!
  * \brief Bitmapped call groups this belongs to.
  * \note The "callgroup" bitmapped group string read in from chan_dahdi.conf
  */
 ast_group_t callgroup;
 /*!
  * \brief Bitmapped pickup groups this belongs to.
  * \note The "pickupgroup" bitmapped group string read in from chan_dahdi.conf
  */
 ast_group_t pickupgroup;
 int channel;     /*!< Channel Number or CRV */
 int span;     /*!< Span number */
 time_t guardtime;    /*!< Must wait this much time before using for new call */
 int cid_signalling;    /*!< CID signalling type bell202 or v23 */
 int cid_start;     /*!< CID start indicator, polarity or ring */
 int callingpres;    /*!< The value of callling presentation that we're going to use when placing a PRI call */
 int callwaitingrepeat;    /*!< How many samples to wait before repeating call waiting */
 int cidcwexpire;    /*!< When to expire our muting for CID/CW */
 /*! \brief Analog caller ID waveform sample buffer */
 unsigned char *cidspill;
 /*! \brief Position in the cidspill buffer to send out next. */
 int cidpos;
 /*! \brief Length of the cidspill buffer containing samples. */
 int cidlen;
 /*! \brief Ring timeout timer?? */
 int ringt;
 /*!
  * \brief Ring timeout base.
  * \note Value computed indirectly from "ringtimeout" read in from chan_dahdi.conf
  */
 int ringt_base;
 /*!
  * \brief Number of most significant digits/characters to strip from the dialed number.
  * \note Feature is deprecated.  Use dialplan logic.
  * \note The characters are stripped before the PRI TON/NPI prefix
  * characters are processed.
  */
 int stripmsd;
 /*! \brief BOOLEAN. XXX Meaning what?? */
 int callwaitcas;
 /*! \brief Number of call waiting rings. */
 int callwaitrings;
 /*! \brief Number of echo cancel taps.  0 if echo canceller not requested. */
 int echocancel;
 /*!
  * \brief Echo training time. 0 = disabled
  * \note Set from the "echotraining" value read in from chan_dahdi.conf
  */
 int echotraining;
 /*! \brief Filled with 'w'.  XXX Purpose?? */
 char echorest[20];
 /*!
  * \brief Number of times to see "busy" tone before hanging up.
  * \note Set from the "busycount" value read in from chan_dahdi.conf
  */
 int busycount;
 /*!
  * \brief Length of "busy" tone on time.
  * \note Set from the "busypattern" value read in from chan_dahdi.conf
  */
 int busy_tonelength;
 /*!
  * \brief Length of "busy" tone off time.
  * \note Set from the "busypattern" value read in from chan_dahdi.conf
  */
 int busy_quietlength;
 /*!
  * \brief Bitmapped call progress detection flags. CALLPROGRESS_xxx values.
  * \note Bits set from the "callprogress" and "faxdetect" values read in from chan_dahdi.conf
  */
 int callprogress;
 struct timeval flashtime;   /*!< Last flash-hook time */
 /*! \brief Opaque DSP configuration structure. */
 struct ast_dsp *dsp;
 //int cref;     /*!< Call reference number (Not used) */
 /*! \brief DAHDI dial operation command struct for ioctl() call. */
 struct dahdi_dialoperation dop;
 int whichwink;     /*!< SIG_FEATDMF_TA Which wink are we on? */
 /*! \brief Second part of SIG_FEATDMF_TA wink operation. */
 char finaldial[64];
 char accountcode[AST_MAX_ACCOUNT_CODE];  /*!< Account code */
 int amaflags;     /*!< AMA Flags */
 struct tdd_state *tdd;    /*!< TDD flag */
 /*! \brief Accumulated call forwarding number. */
 char call_forward[AST_MAX_EXTENSION];
 /*!
  * \brief Voice mailbox location.
  * \note Set from the "mailbox" string read in from chan_dahdi.conf
  */
 char mailbox[AST_MAX_EXTENSION];
 /*! \brief Delayed dialing for E911.  Overlap digits for ISDN. */
 char dialdest[256];
 /*! \brief Time the interface went on-hook. */
 int onhooktime;
 /*! \brief -1 = unknown, 0 = no messages, 1 = new messages available */
 int msgstate;
 int distinctivering;    /*!< Which distinctivering to use */
 int cidrings;     /*!< Which ring to deliver CID on */
 int dtmfrelax;     /*!< whether to run in relaxed DTMF mode */
 /*! \brief Holding place for event injected from outside normal operation. */
 int fake_event;
 /*!
  * \brief Minimal time period (ms) between the answer polarity
  * switch and hangup polarity switch.
  */
 int polarityonanswerdelay;
 /*! \brief Start delay time if polarityonanswerdelay is nonzero. */
 struct timeval polaritydelaytv;
 /*!
  * \brief Send caller ID after this many rings.
  * \note Set from the "sendcalleridafter" value read in from chan_dahdi.conf
  */
 int sendcalleridafter;
#ifdef HAVE_PRI
 /*! \brief DAHDI PRI control parameters */
 struct dahdi_pri *pri;
 /*! \brief XXX Purpose??? */
 struct dahdi_pvt *bearer;
 /*! \brief XXX Purpose??? */
 struct dahdi_pvt *realcall;
 /*! \brief Opaque libpri call control structure */
 q931_call *call;
 /*! \brief Channel number in span. */
 int prioffset;
 /*! \brief Logical span number within trunk group */
 int logicalspan;
#endif 
 /*! \brief Current line interface polarity. POLARITY_IDLE, POLARITY_REV */
 int polarity;
 /*! \brief DSP feature flags: DSP_FEATURE_xxx */
 int dsp_features;
 /*! \brief DTMF digit in progress.  0 when no digit in progress. */
 char begindigit;
} *iflist = NULL, *ifend = NULL;

 

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