#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <math.h>
#include "asterisk/pbx.h"
#include "asterisk/frame.h"
#include "asterisk/sched.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/audiohook.h"
#include "asterisk/musiconhold.h"
#include "asterisk/logger.h"
#include "asterisk/say.h"
#include "asterisk/file.h"
#include "asterisk/cli.h"
#include "asterisk/translate.h"
#include "asterisk/manager.h"
#include "asterisk/chanvars.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/monitor.h"
#include "asterisk/causes.h"
#include "asterisk/callerid.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/transcap.h"
#include "asterisk/devicestate.h"
#include "asterisk/sha1.h"
#include "asterisk/threadstorage.h"
#include "asterisk/slinfactory.h"
Go to the source code of this file.
Data Structures | |
struct | ast_cause |
struct | ast_silence_generator |
struct | backends |
struct | chanlist |
struct | channels |
struct | tonepair_def |
struct | tonepair_state |
Defines | |
#define | AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
#define | AST_MIN_DTMF_DURATION 80 |
#define | AST_MIN_DTMF_GAP 45 |
#define | FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define | MONITOR_CONSTANT_DELAY |
#define | MONITOR_DELAY 150 * 8 |
#define | STATE2STR_BUFSIZE 32 |
Functions | |
static int | __ast_queue_frame (struct ast_channel *chan, struct ast_frame *fin, int head) |
Queue an outgoing media frame. | |
static struct ast_frame * | __ast_read (struct ast_channel *chan, int dropaudio) |
ast_channel * | __ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cid_num, const char *cid_name, struct outgoing_helper *oh) |
int | ast_activate_generator (struct ast_channel *chan, struct ast_generator *gen, void *params) |
int | ast_active_channels (void) |
returns number of active/allocated channels | |
int | ast_answer (struct ast_channel *chan) |
Answer a ringing call. | |
void | ast_begin_shutdown (int hangup) |
Initiate system shutdown. | |
int | ast_best_codec (int fmts) |
Pick the best audio codec. | |
ast_channel * | ast_bridged_channel (struct ast_channel *chan) |
Find bridged channel. | |
int | ast_call (struct ast_channel *chan, char *addr, int timeout) |
Make a call. | |
void | ast_cancel_shutdown (void) |
Cancel a shutdown in progress. | |
const char * | ast_cause2str (int cause) |
Gives the string form of a given hangup cause. | |
void | ast_change_name (struct ast_channel *chan, char *newname) |
Change channel name. | |
ast_channel * | ast_channel_alloc (int needqueue, int state, const char *cid_num, const char *cid_name, const char *acctcode, const char *exten, const char *context, const int amaflag, const char *name_fmt,...) |
Create a channel structure. | |
enum ast_bridge_result | ast_channel_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc) |
Bridge two channels together. | |
int | ast_channel_cmpwhentohangup (struct ast_channel *chan, time_t offset) |
Compare a offset with the settings of when to hang a channel up. | |
int | ast_channel_datastore_add (struct ast_channel *chan, struct ast_datastore *datastore) |
Add a datastore to a channel. | |
ast_datastore * | ast_channel_datastore_alloc (const struct ast_datastore_info *info, char *uid) |
Create a channel datastore structure. | |
ast_datastore * | ast_channel_datastore_find (struct ast_channel *chan, const struct ast_datastore_info *info, char *uid) |
Find a datastore on a channel. | |
int | ast_channel_datastore_free (struct ast_datastore *datastore) |
Free a channel datastore structure. | |
int | ast_channel_datastore_inherit (struct ast_channel *from, struct ast_channel *to) |
Inherit datastores from a parent to a child. | |
int | ast_channel_datastore_remove (struct ast_channel *chan, struct ast_datastore *datastore) |
Remove a datastore from a channel. | |
int | ast_channel_defer_dtmf (struct ast_channel *chan) |
Set defer DTMF flag on channel. | |
void | ast_channel_free (struct ast_channel *chan) |
Free a channel structure. | |
void | ast_channel_inherit_variables (const struct ast_channel *parent, struct ast_channel *child) |
Inherits channel variable from parent to child channel. | |
int | ast_channel_make_compatible (struct ast_channel *chan, struct ast_channel *peer) |
Makes two channel formats compatible. | |
int | ast_channel_masquerade (struct ast_channel *original, struct ast_channel *clone) |
Weird function made for call transfers. | |
char * | ast_channel_reason2str (int reason) |
return an english explanation of the code returned thru __ast_request_and_dial's 'outstate' argument | |
int | ast_channel_register (const struct ast_channel_tech *tech) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports. | |
int | ast_channel_sendhtml (struct ast_channel *chan, int subclass, const char *data, int datalen) |
int | ast_channel_sendurl (struct ast_channel *chan, const char *url) |
int | ast_channel_setoption (struct ast_channel *chan, int option, void *data, int datalen, int block) |
Sets an option on a channel. | |
void | ast_channel_setwhentohangup (struct ast_channel *chan, time_t offset) |
Set when to hang a channel up. | |
ast_silence_generator * | ast_channel_start_silence_generator (struct ast_channel *chan) |
Starts a silence generator on the given channel. | |
void | ast_channel_stop_silence_generator (struct ast_channel *chan, struct ast_silence_generator *state) |
Stops a previously-started silence generator on the given channel. | |
int | ast_channel_supports_html (struct ast_channel *chan) |
void | ast_channel_undefer_dtmf (struct ast_channel *chan) |
Unset defer DTMF flag on channel. | |
void | ast_channel_unregister (const struct ast_channel_tech *tech) |
Unregister a channel technology. | |
ast_channel * | ast_channel_walk_locked (const struct ast_channel *prev) |
Browse channels in use Browse the channels currently in use. | |
void | ast_channels_init (void) |
ast_variable * | ast_channeltype_list (void) |
return an ast_variable list of channeltypes | |
int | ast_check_hangup (struct ast_channel *chan) |
Check to see if a channel is needing hang up. | |
static int | ast_check_hangup_locked (struct ast_channel *chan) |
void | ast_deactivate_generator (struct ast_channel *chan) |
int | ast_do_masquerade (struct ast_channel *original) |
Start masquerading a channel XXX This is a seriously wacked out operation. We're essentially putting the guts of the clone channel into the original channel. Start by killing off the original channel's backend. I'm not sure we're going to keep this function, because while the features are nice, the cost is very high in terms of pure nastiness. XXX. | |
static enum ast_bridge_result | ast_generic_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc, struct timeval bridge_end) |
ast_channel * | ast_get_channel_by_exten_locked (const char *exten, const char *context) |
Get channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_get_channel_by_name_locked (const char *name) |
Get channel by name (locks channel). | |
ast_channel * | ast_get_channel_by_name_prefix_locked (const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
ast_channel_tech * | ast_get_channel_tech (const char *name) |
Get a channel technology structure by name. | |
ast_group_t | ast_get_group (const char *s) |
int | ast_hangup (struct ast_channel *chan) |
Hang up a channel. | |
int | ast_indicate (struct ast_channel *chan, int condition) |
Indicates condition of channel. | |
int | ast_indicate_data (struct ast_channel *chan, int _condition, const void *data, size_t datalen) |
Indicates condition of channel, with payload. | |
void | ast_install_music_functions (int(*start_ptr)(struct ast_channel *, const char *, const char *), void(*stop_ptr)(struct ast_channel *), void(*cleanup_ptr)(struct ast_channel *)) |
int | ast_internal_timing_enabled (struct ast_channel *chan) |
Check if the channel can run in internal timing mode. | |
void | ast_moh_cleanup (struct ast_channel *chan) |
int | ast_moh_start (struct ast_channel *chan, const char *mclass, const char *interpclass) |
Turn on music on hold on a given channel. | |
void | ast_moh_stop (struct ast_channel *chan) |
Turn off music on hold on a given channel. | |
char * | ast_print_group (char *buf, int buflen, ast_group_t group) |
print call- and pickup groups into buffer | |
int | ast_prod (struct ast_channel *chan) |
Send empty audio to prime a channel driver. | |
int | ast_queue_control (struct ast_channel *chan, enum ast_control_frame_type control) |
Queue a control frame with payload. | |
int | ast_queue_control_data (struct ast_channel *chan, enum ast_control_frame_type control, const void *data, size_t datalen) |
Queue a control frame with payload. | |
int | ast_queue_frame (struct ast_channel *chan, struct ast_frame *fin) |
Queue an outgoing frame. | |
int | ast_queue_frame_head (struct ast_channel *chan, struct ast_frame *fin) |
Queue an outgoing frame to the head of the frame queue. | |
int | ast_queue_hangup (struct ast_channel *chan) |
Queue a hangup frame. | |
ast_frame * | ast_read (struct ast_channel *chan) |
Reads a frame. | |
static void | ast_read_generator_actions (struct ast_channel *chan, struct ast_frame *f) |
ast_frame * | ast_read_noaudio (struct ast_channel *chan) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame. | |
int | ast_readstring (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders) |
int | ast_readstring_full (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders, int audiofd, int ctrlfd) |
int | ast_recvchar (struct ast_channel *chan, int timeout) |
Receives a text character from a channel. | |
char * | ast_recvtext (struct ast_channel *chan, int timeout) |
Receives a text string from a channel Read a string of text from a channel. | |
ast_channel * | ast_request (const char *type, int format, void *data, int *cause) |
Requests a channel. | |
ast_channel * | ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cidnum, const char *cidname) |
Request a channel of a given type, with data as optional information used by the low level module and attempt to place a call on it. | |
int | ast_safe_sleep (struct ast_channel *chan, int ms) |
Wait for a specied amount of time, looking for hangups. | |
int | ast_safe_sleep_conditional (struct ast_channel *chan, int ms, int(*cond)(void *), void *data) |
Wait for a specied amount of time, looking for hangups and a condition argument. | |
char * | ast_safe_string_alloc (const char *fmt,...) |
printf the string into a correctly sized mallocd buffer, and return the buffer | |
int | ast_say_character_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digit_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digits (struct ast_channel *chan, int num, const char *ints, const char *lang) |
int | ast_say_digits_full (struct ast_channel *chan, int num, const char *ints, const char *lang, int audiofd, int ctrlfd) |
int | ast_say_enumeration (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_number (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_phonetic_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_senddigit (struct ast_channel *chan, char digit) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_begin (struct ast_channel *chan, char digit) |
int | ast_senddigit_end (struct ast_channel *chan, char digit, unsigned int duration) |
int | ast_sendtext (struct ast_channel *chan, const char *text) |
Sends text to a channel Write text to a display on a channel. | |
void | ast_set_callerid (struct ast_channel *chan, const char *callerid, const char *calleridname, const char *ani) |
int | ast_set_read_format (struct ast_channel *chan, int fmt) |
Sets read format on channel chan Set read format for channel to whichever component of "format" is best. | |
void | ast_set_variables (struct ast_channel *chan, struct ast_variable *vars) |
adds a list of channel variables to a channel | |
int | ast_set_write_format (struct ast_channel *chan, int fmt) |
Sets write format on channel chan Set write format for channel to whichever compoent of "format" is best. | |
int | ast_setstate (struct ast_channel *chan, enum ast_channel_state state) |
Change the state of a channel. | |
int | ast_settimeout (struct ast_channel *c, int samples, int(*func)(const void *data), void *data) |
int | ast_shutting_down (void) |
Returns non-zero if Asterisk is being shut down. | |
int | ast_softhangup (struct ast_channel *chan, int cause) |
Softly hangup up a channel. | |
int | ast_softhangup_nolock (struct ast_channel *chan, int cause) |
Softly hangup up a channel (no channel lock). | |
char * | ast_state2str (enum ast_channel_state state) |
Gives the string form of a given channel state. | |
int | ast_str2cause (const char *name) |
Convert a symbolic hangup cause to number. | |
int | ast_tonepair (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
int | ast_tonepair_start (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
void | ast_tonepair_stop (struct ast_channel *chan) |
int | ast_transfer (struct ast_channel *chan, char *dest) |
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested. | |
char * | ast_transfercapability2str (int transfercapability) |
Gives the string form of a given transfer capability. | |
void | ast_uninstall_music_functions (void) |
int | ast_waitfor (struct ast_channel *c, int ms) |
Wait for input on a channel. | |
ast_channel * | ast_waitfor_n (struct ast_channel **c, int n, int *ms) |
Waits for input on a group of channels Wait for input on an array of channels for a given # of milliseconds. | |
int | ast_waitfor_n_fd (int *fds, int n, int *ms, int *exception) |
Waits for input on an fd This version works on fd's only. Be careful with it. | |
ast_channel * | ast_waitfor_nandfds (struct ast_channel **c, int n, int *fds, int nfds, int *exception, int *outfd, int *ms) |
Waits for activity on a group of channels. | |
int | ast_waitfordigit (struct ast_channel *c, int ms) |
Waits for a digit. | |
int | ast_waitfordigit_full (struct ast_channel *c, int ms, int audiofd, int cmdfd) |
Wait for a digit Same as ast_waitfordigit() with audio fd for outputting read audio and ctrlfd to monitor for reading. | |
ast_channel * | ast_walk_channel_by_exten_locked (const struct ast_channel *chan, const char *exten, const char *context) |
Get next channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_walk_channel_by_name_prefix_locked (const struct ast_channel *chan, const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
int | ast_write (struct ast_channel *chan, struct ast_frame *fr) |
Write a frame to a channel This function writes the given frame to the indicated channel. | |
int | ast_write_video (struct ast_channel *chan, struct ast_frame *fr) |
Write video frame to a channel This function writes the given frame to the indicated channel. | |
static void | bridge_playfile (struct ast_channel *chan, struct ast_channel *peer, const char *sound, int remain) |
static struct ast_channel * | channel_find_locked (const struct ast_channel *prev, const char *name, const int namelen, const char *context, const char *exten) |
Helper function to find channels. | |
const char * | channelreloadreason2txt (enum channelreloadreason reason) |
Convert enum channelreloadreason to text string for manager event. | |
static void | clone_variables (struct ast_channel *original, struct ast_channel *clone) |
Clone channel variables from 'clone' channel into 'original' channel. | |
static char * | complete_channeltypes (const char *line, const char *word, int pos, int state) |
static char * | complete_channeltypes_deprecated (const char *line, const char *word, int pos, int state) |
static void | free_cid (struct ast_callerid *cid) |
static void | free_translation (struct ast_channel *clone) |
static int | generator_force (const void *data) |
static int attribute_const | is_visible_indication (enum ast_control_frame_type condition) |
static void | queue_dtmf_readq (struct ast_channel *chan, struct ast_frame *f) |
static int | set_format (struct ast_channel *chan, int fmt, int *rawformat, int *format, struct ast_trans_pvt **trans, const int direction) |
static int | should_skip_dtmf (struct ast_channel *chan) |
Determine whether or not we should ignore DTMF in the readq. | |
static int | show_channeltype (int fd, int argc, char *argv[]) |
static int | show_channeltype_deprecated (int fd, int argc, char *argv[]) |
static int | show_channeltypes (int fd, int argc, char *argv[]) |
static void * | silence_generator_alloc (struct ast_channel *chan, void *data) |
static int | silence_generator_generate (struct ast_channel *chan, void *data, int len, int samples) |
static void | silence_generator_release (struct ast_channel *chan, void *data) |
static void | state2str_threadbuf_init (void) |
static void * | tonepair_alloc (struct ast_channel *chan, void *params) |
static int | tonepair_generator (struct ast_channel *chan, void *data, int len, int samples) |
static void | tonepair_release (struct ast_channel *chan, void *params) |
Variables | |
static void(*) | ast_moh_cleanup_ptr (struct ast_channel *) = NULL |
static int(*) | ast_moh_start_ptr (struct ast_channel *, const char *, const char *) = NULL |
static void(*) | ast_moh_stop_ptr (struct ast_channel *) = NULL |
ast_cause | causes [] |
static struct ast_cli_entry | cli_channel [] |
static struct ast_cli_entry | cli_show_channeltype_deprecated |
static struct ast_cli_entry | cli_show_channeltypes_deprecated |
unsigned long | global_fin |
unsigned long | global_fout |
static struct ast_channel_tech | null_tech |
static char | show_channeltype_usage [] |
static char | show_channeltypes_usage [] |
static int | shutting_down |
static struct ast_generator | silence_generator |
static struct ast_threadstorage | state2str_threadbuf = { .once = PTHREAD_ONCE_INIT , .key_init = state2str_threadbuf_init , } |
static struct ast_generator | tonepair |
static int | uniqueint |
Definition in file channel.c.
#define AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
Default amount of time to use when emulating a digit as a begin and end 100ms
Definition at line 89 of file channel.c.
Referenced by __ast_read(), and ast_senddigit().
#define AST_MIN_DTMF_DURATION 80 |
Minimum allowed digit length - 80ms
Definition at line 92 of file channel.c.
Referenced by __ast_read().
#define AST_MIN_DTMF_GAP 45 |
Minimum amount of time between the end of the last digit and the beginning of a new one - 45ms
Definition at line 96 of file channel.c.
Referenced by __ast_read(), and should_skip_dtmf().
#define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define MONITOR_DELAY 150 * 8 |
#define STATE2STR_BUFSIZE 32 |
static int __ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin, | |||
int | head | |||
) | [static] |
Queue an outgoing media frame.
Definition at line 897 of file channel.c.
References ast_channel::alertpipe, ast_assert, ast_channel_lock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FLAG_BLOCKING, AST_FRAME_CONTROL, AST_FRAME_VOICE, ast_frdup(), ast_frfree, AST_LIST_INSERT_HEAD, AST_LIST_INSERT_TAIL, AST_LIST_LAST, AST_LIST_TRAVERSE, ast_log(), ast_test_flag, ast_channel::blocker, errno, f, ast_frame::frame_list, ast_frame::frametype, LOG_DEBUG, ast_channel::name, option_debug, ast_channel::readq, ast_frame::subclass, and ast_channel::timingfd.
Referenced by ast_queue_frame(), and ast_queue_frame_head().
00898 { 00899 struct ast_frame *f; 00900 struct ast_frame *cur; 00901 int blah = 1; 00902 int qlen = 0; 00903 00904 /* Build us a copy and free the original one */ 00905 if (!(f = ast_frdup(fin))) { 00906 return -1; 00907 } 00908 00909 ast_channel_lock(chan); 00910 00911 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00912 if ((cur = AST_LIST_LAST(&chan->readq)) && (cur->frametype == AST_FRAME_CONTROL) && (cur->subclass == AST_CONTROL_HANGUP)) { 00913 ast_frfree(f); 00914 ast_channel_unlock(chan); 00915 return 0; 00916 } 00917 00918 /* Count how many frames exist on the queue */ 00919 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00920 qlen++; 00921 } 00922 00923 /* Allow up to 96 voice frames outstanding, and up to 128 total frames */ 00924 if (((fin->frametype == AST_FRAME_VOICE) && (qlen > 96)) || (qlen > 128)) { 00925 if (fin->frametype != AST_FRAME_VOICE) { 00926 ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name); 00927 ast_assert(fin->frametype == AST_FRAME_VOICE); 00928 } else { 00929 if (option_debug) 00930 ast_log(LOG_DEBUG, "Dropping voice to exceptionally long queue on %s\n", chan->name); 00931 ast_frfree(f); 00932 ast_channel_unlock(chan); 00933 return 0; 00934 } 00935 } 00936 00937 if (head) { 00938 AST_LIST_INSERT_HEAD(&chan->readq, f, frame_list); 00939 } else { 00940 AST_LIST_INSERT_TAIL(&chan->readq, f, frame_list); 00941 } 00942 00943 if (chan->alertpipe[1] > -1) { 00944 if (write(chan->alertpipe[1], &blah, sizeof(blah)) != sizeof(blah)) { 00945 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s, frametype/subclass %d/%d (qlen = %d): %s!\n", 00946 chan->name, f->frametype, f->subclass, qlen, strerror(errno)); 00947 } 00948 #ifdef HAVE_DAHDI 00949 } else if (chan->timingfd > -1) { 00950 ioctl(chan->timingfd, DAHDI_TIMERPING, &blah); 00951 #endif 00952 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00953 pthread_kill(chan->blocker, SIGURG); 00954 } 00955 00956 ast_channel_unlock(chan); 00957 00958 return 0; 00959 }
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 2022 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::alertpipe, AST_AUDIOHOOK_DIRECTION_READ, ast_audiohook_write_list(), ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, ast_deactivate_generator(), AST_DEFAULT_EMULATE_DTMF_DURATION, ast_do_masquerade(), AST_FLAG_DEFER_DTMF, AST_FLAG_EMULATE_DTMF, AST_FLAG_END_DTMF_ONLY, AST_FLAG_EXCEPTION, AST_FLAG_IN_DTMF, AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_NULL, AST_FRAME_VOICE, ast_frfree, AST_GENERATOR_FD, ast_getformatname(), ast_getformatname_multiple(), AST_LIST_EMPTY, AST_LIST_FIRST, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_NEXT, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), AST_MIN_DTMF_DURATION, AST_MIN_DTMF_GAP, AST_MONITOR_RUNNING, ast_null_frame, ast_read_generator_actions(), ast_seekstream(), ast_set_flag, ast_setstate(), AST_SOFTHANGUP_DEV, AST_STATE_UP, ast_test_flag, AST_TIMING_FD, ast_translate(), ast_tvdiff_ms(), ast_tvnow(), ast_tvzero(), ast_writestream(), ast_channel::audiohooks, ast_channel::blocker, ast_frame::data, DEBUGCHAN_FLAG, ast_channel::dtmf_tv, ast_channel::dtmff, ast_channel::emulate_dtmf_digit, ast_channel::emulate_dtmf_duration, errno, ast_channel_tech::exception, f, ast_channel::fdno, ast_channel::fds, ast_channel::fin, ast_frame::flags, ast_frame::frame_list, FRAMECOUNT_INC, ast_frame::frametype, ast_generator::generate, ast_channel::generator, ast_channel::generatordata, ast_channel::insmpl, LOG_DEBUG, LOG_DTMF, LOG_ERROR, LOG_NOTICE, ast_channel::masq, ast_channel::monitor, MONITOR_DELAY, ast_channel::name, ast_channel::nativeformats, option_debug, ast_channel::outsmpl, queue_dtmf_readq(), ast_channel_tech::read, ast_channel_monitor::read_stream, ast_channel::readq, ast_channel::readtrans, SEEK_FORCECUR, should_skip_dtmf(), ast_channel_monitor::state, ast_channel::tech, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_read(), and ast_read_noaudio().
02023 { 02024 struct ast_frame *f = NULL; /* the return value */ 02025 int blah; 02026 int prestate; 02027 int count = 0; 02028 02029 /* this function is very long so make sure there is only one return 02030 * point at the end (there are only two exceptions to this). 02031 */ 02032 while(ast_channel_trylock(chan)) { 02033 if(count++ > 10) 02034 /*cannot goto done since the channel is not locked*/ 02035 return &ast_null_frame; 02036 usleep(1); 02037 } 02038 02039 if (chan->masq) { 02040 if (ast_do_masquerade(chan)) 02041 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02042 else 02043 f = &ast_null_frame; 02044 goto done; 02045 } 02046 02047 /* Stop if we're a zombie or need a soft hangup */ 02048 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02049 if (chan->generator) 02050 ast_deactivate_generator(chan); 02051 goto done; 02052 } 02053 prestate = chan->_state; 02054 02055 /* Read and ignore anything on the alertpipe, but read only 02056 one sizeof(blah) per frame that we send from it */ 02057 if (chan->alertpipe[0] > -1) { 02058 int flags = fcntl(chan->alertpipe[0], F_GETFL); 02059 /* For some odd reason, the alertpipe occasionally loses nonblocking status, 02060 * which immediately causes a deadlock scenario. Detect and prevent this. */ 02061 if ((flags & O_NONBLOCK) == 0) { 02062 ast_log(LOG_ERROR, "Alertpipe on channel %s lost O_NONBLOCK?!!\n", chan->name); 02063 if (fcntl(chan->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 02064 ast_log(LOG_WARNING, "Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 02065 f = &ast_null_frame; 02066 goto done; 02067 } 02068 } 02069 if (read(chan->alertpipe[0], &blah, sizeof(blah)) < 0) { 02070 if (errno != EINTR && errno != EAGAIN) 02071 ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno)); 02072 } 02073 } 02074 02075 #ifdef HAVE_DAHDI 02076 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02077 int res; 02078 02079 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02080 blah = -1; 02081 /* IF we can't get event, assume it's an expired as-per the old interface */ 02082 res = ioctl(chan->timingfd, DAHDI_GETEVENT, &blah); 02083 if (res) 02084 blah = DAHDI_EVENT_TIMER_EXPIRED; 02085 02086 if (blah == DAHDI_EVENT_TIMER_PING) { 02087 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02088 /* Acknowledge PONG unless we need it again */ 02089 if (ioctl(chan->timingfd, DAHDI_TIMERPONG, &blah)) { 02090 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02091 } 02092 } 02093 } else if (blah == DAHDI_EVENT_TIMER_EXPIRED) { 02094 ioctl(chan->timingfd, DAHDI_TIMERACK, &blah); 02095 if (chan->timingfunc) { 02096 /* save a copy of func/data before unlocking the channel */ 02097 int (*func)(const void *) = chan->timingfunc; 02098 void *data = chan->timingdata; 02099 ast_channel_unlock(chan); 02100 func(data); 02101 } else { 02102 blah = 0; 02103 ioctl(chan->timingfd, DAHDI_TIMERCONFIG, &blah); 02104 chan->timingdata = NULL; 02105 ast_channel_unlock(chan); 02106 } 02107 /* cannot 'goto done' because the channel is already unlocked */ 02108 return &ast_null_frame; 02109 } else 02110 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02111 } else 02112 #endif 02113 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02114 /* if the AST_GENERATOR_FD is set, call the generator with args 02115 * set to -1 so it can do whatever it needs to. 02116 */ 02117 void *tmp = chan->generatordata; 02118 chan->generatordata = NULL; /* reset to let ast_write get through */ 02119 chan->generator->generate(chan, tmp, -1, -1); 02120 chan->generatordata = tmp; 02121 f = &ast_null_frame; 02122 goto done; 02123 } 02124 02125 /* Check for pending read queue */ 02126 if (!AST_LIST_EMPTY(&chan->readq)) { 02127 int skip_dtmf = should_skip_dtmf(chan); 02128 02129 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->readq, f, frame_list) { 02130 /* We have to be picky about which frame we pull off of the readq because 02131 * there are cases where we want to leave DTMF frames on the queue until 02132 * some later time. */ 02133 02134 if ( (f->frametype == AST_FRAME_DTMF_BEGIN || f->frametype == AST_FRAME_DTMF_END) && skip_dtmf) { 02135 continue; 02136 } 02137 02138 AST_LIST_REMOVE_CURRENT(&chan->readq, frame_list); 02139 break; 02140 } 02141 AST_LIST_TRAVERSE_SAFE_END 02142 02143 if (!f) { 02144 /* There were no acceptable frames on the readq. */ 02145 f = &ast_null_frame; 02146 if (chan->alertpipe[0] > -1) { 02147 int poke = 0; 02148 /* Restore the state of the alertpipe since we aren't ready for any 02149 * of the frames in the readq. */ 02150 if (write(chan->alertpipe[1], &poke, sizeof(poke)) != sizeof(poke)) { 02151 ast_log(LOG_ERROR, "Failed to write to alertpipe: %s\n", strerror(errno)); 02152 } 02153 } 02154 } 02155 02156 /* Interpret hangup and return NULL */ 02157 /* XXX why not the same for frames from the channel ? */ 02158 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02159 ast_frfree(f); 02160 f = NULL; 02161 } 02162 } else { 02163 chan->blocker = pthread_self(); 02164 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02165 if (chan->tech->exception) 02166 f = chan->tech->exception(chan); 02167 else { 02168 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02169 f = &ast_null_frame; 02170 } 02171 /* Clear the exception flag */ 02172 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02173 } else if (chan->tech->read) 02174 f = chan->tech->read(chan); 02175 else 02176 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02177 } 02178 02179 if (f) { 02180 /* if the channel driver returned more than one frame, stuff the excess 02181 into the readq for the next ast_read call (note that we can safely assume 02182 that the readq is empty, because otherwise we would not have called into 02183 the channel driver and f would be only a single frame) 02184 */ 02185 if (AST_LIST_NEXT(f, frame_list)) { 02186 AST_LIST_HEAD_SET_NOLOCK(&chan->readq, AST_LIST_NEXT(f, frame_list)); 02187 AST_LIST_NEXT(f, frame_list) = NULL; 02188 } 02189 02190 switch (f->frametype) { 02191 case AST_FRAME_CONTROL: 02192 if (f->subclass == AST_CONTROL_ANSWER) { 02193 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02194 if (option_debug) 02195 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02196 ast_frfree(f); 02197 f = &ast_null_frame; 02198 } else if (prestate == AST_STATE_UP) { 02199 if (option_debug) 02200 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02201 ast_frfree(f); 02202 f = &ast_null_frame; 02203 } else { 02204 /* Answer the CDR */ 02205 ast_setstate(chan, AST_STATE_UP); 02206 /* removed a call to ast_cdr_answer(chan->cdr) from here. */ 02207 } 02208 } 02209 break; 02210 case AST_FRAME_DTMF_END: 02211 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02212 /* Queue it up if DTMF is deferred, or if DTMF emulation is forced. */ 02213 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02214 queue_dtmf_readq(chan, f); 02215 ast_frfree(f); 02216 f = &ast_null_frame; 02217 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02218 if (!ast_tvzero(chan->dtmf_tv) && 02219 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02220 /* If it hasn't been long enough, defer this digit */ 02221 queue_dtmf_readq(chan, f); 02222 ast_frfree(f); 02223 f = &ast_null_frame; 02224 } else { 02225 /* There was no begin, turn this into a begin and send the end later */ 02226 f->frametype = AST_FRAME_DTMF_BEGIN; 02227 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02228 chan->emulate_dtmf_digit = f->subclass; 02229 chan->dtmf_tv = ast_tvnow(); 02230 if (f->len) { 02231 if (f->len > AST_MIN_DTMF_DURATION) 02232 chan->emulate_dtmf_duration = f->len; 02233 else 02234 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02235 } else 02236 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02237 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02238 } 02239 if (chan->audiohooks) { 02240 struct ast_frame *old_frame = f; 02241 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02242 if (old_frame != f) 02243 ast_frfree(old_frame); 02244 } 02245 } else { 02246 struct timeval now = ast_tvnow(); 02247 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02248 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02249 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02250 if (!f->len) 02251 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02252 } else if (!f->len) { 02253 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02254 f->len = AST_MIN_DTMF_DURATION; 02255 } 02256 if (f->len < AST_MIN_DTMF_DURATION && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02257 ast_log(LOG_DTMF, "DTMF end '%c' has duration %ld but want minimum %d, emulating on %s\n", f->subclass, f->len, AST_MIN_DTMF_DURATION, chan->name); 02258 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02259 chan->emulate_dtmf_digit = f->subclass; 02260 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02261 ast_frfree(f); 02262 f = &ast_null_frame; 02263 } else { 02264 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02265 if (f->len < AST_MIN_DTMF_DURATION) { 02266 f->len = AST_MIN_DTMF_DURATION; 02267 } 02268 chan->dtmf_tv = now; 02269 } 02270 if (chan->audiohooks) { 02271 struct ast_frame *old_frame = f; 02272 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02273 if (old_frame != f) 02274 ast_frfree(old_frame); 02275 } 02276 } 02277 break; 02278 case AST_FRAME_DTMF_BEGIN: 02279 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02280 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 02281 (!ast_tvzero(chan->dtmf_tv) && 02282 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02283 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02284 ast_frfree(f); 02285 f = &ast_null_frame; 02286 } else { 02287 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02288 chan->dtmf_tv = ast_tvnow(); 02289 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02290 } 02291 break; 02292 case AST_FRAME_NULL: 02293 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02294 * is reached , because we want to make sure we pass at least one 02295 * voice frame through before starting the next digit, to ensure a gap 02296 * between DTMF digits. */ 02297 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02298 struct timeval now = ast_tvnow(); 02299 if (!chan->emulate_dtmf_duration) { 02300 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02301 chan->emulate_dtmf_digit = 0; 02302 } else if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02303 chan->emulate_dtmf_duration = 0; 02304 ast_frfree(f); 02305 f = &chan->dtmff; 02306 f->frametype = AST_FRAME_DTMF_END; 02307 f->subclass = chan->emulate_dtmf_digit; 02308 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02309 chan->dtmf_tv = now; 02310 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02311 chan->emulate_dtmf_digit = 0; 02312 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02313 } 02314 } 02315 break; 02316 case AST_FRAME_VOICE: 02317 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02318 * is reached , because we want to make sure we pass at least one 02319 * voice frame through before starting the next digit, to ensure a gap 02320 * between DTMF digits. */ 02321 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02322 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02323 chan->emulate_dtmf_digit = 0; 02324 } 02325 02326 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02327 if (dropaudio) 02328 ast_read_generator_actions(chan, f); 02329 ast_frfree(f); 02330 f = &ast_null_frame; 02331 } 02332 02333 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02334 struct timeval now = ast_tvnow(); 02335 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02336 chan->emulate_dtmf_duration = 0; 02337 ast_frfree(f); 02338 f = &chan->dtmff; 02339 f->frametype = AST_FRAME_DTMF_END; 02340 f->subclass = chan->emulate_dtmf_digit; 02341 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02342 chan->dtmf_tv = now; 02343 if (chan->audiohooks) { 02344 struct ast_frame *old_frame = f; 02345 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02346 if (old_frame != f) 02347 ast_frfree(old_frame); 02348 } 02349 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02350 } else { 02351 /* Drop voice frames while we're still in the middle of the digit */ 02352 ast_frfree(f); 02353 f = &ast_null_frame; 02354 } 02355 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02356 /* This frame is not one of the current native formats -- drop it on the floor */ 02357 char to[200]; 02358 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02359 chan->name, ast_getformatname(f->subclass), ast_getformatname_multiple(to, sizeof(to), chan->nativeformats)); 02360 ast_frfree(f); 02361 f = &ast_null_frame; 02362 } else if ((f->frametype == AST_FRAME_VOICE)) { 02363 if (chan->audiohooks) { 02364 struct ast_frame *old_frame = f; 02365 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02366 if (old_frame != f) 02367 ast_frfree(old_frame); 02368 } 02369 if (chan->monitor && chan->monitor->read_stream ) { 02370 /* XXX what does this do ? */ 02371 #ifndef MONITOR_CONSTANT_DELAY 02372 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02373 if (jump >= 0) { 02374 jump = chan->outsmpl - chan->insmpl; 02375 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02376 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02377 chan->insmpl += jump + f->samples; 02378 } else 02379 chan->insmpl+= f->samples; 02380 #else 02381 int jump = chan->outsmpl - chan->insmpl; 02382 if (jump - MONITOR_DELAY >= 0) { 02383 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02384 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02385 chan->insmpl += jump; 02386 } else 02387 chan->insmpl += f->samples; 02388 #endif 02389 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02390 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02391 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02392 } 02393 } 02394 02395 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) 02396 f = &ast_null_frame; 02397 02398 /* Run generator sitting on the line if timing device not available 02399 * and synchronous generation of outgoing frames is necessary */ 02400 ast_read_generator_actions(chan, f); 02401 } 02402 default: 02403 /* Just pass it on! */ 02404 break; 02405 } 02406 } else { 02407 /* Make sure we always return NULL in the future */ 02408 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02409 if (chan->generator) 02410 ast_deactivate_generator(chan); 02411 /* We no longer End the CDR here */ 02412 } 02413 02414 /* High bit prints debugging */ 02415 if (chan->fin & DEBUGCHAN_FLAG) 02416 ast_frame_dump(chan->name, f, "<<"); 02417 chan->fin = FRAMECOUNT_INC(chan->fin); 02418 02419 done: 02420 ast_channel_unlock(chan); 02421 return f; 02422 }
struct ast_channel* __ast_request_and_dial | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int | timeout, | |||
int * | outstate, | |||
const char * | cid_num, | |||
const char * | cid_name, | |||
struct outgoing_helper * | oh | |||
) |
Definition at line 3000 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, AST_CAUSE_NO_ANSWER, ast_cdr_alloc(), ast_cdr_disposition(), ast_cdr_end(), ast_cdr_failed(), ast_cdr_init(), ast_cdr_setaccount(), ast_cdr_setapp(), ast_cdr_start(), ast_cdr_update(), ast_channel_inherit_variables(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, ast_copy_string(), AST_FRAME_CONTROL, ast_frfree, ast_hangup(), ast_log(), ast_read(), ast_request(), ast_set_callerid(), ast_set_variables(), AST_STATE_UP, ast_strlen_zero(), ast_waitfor(), ast_channel::cdr, outgoing_helper::cid_name, outgoing_helper::cid_num, outgoing_helper::context, ast_channel::context, outgoing_helper::exten, ast_channel::exten, f, ast_channel::hangupcause, LOG_NOTICE, outgoing_helper::parent_channel, outgoing_helper::priority, ast_channel::priority, and outgoing_helper::vars.
Referenced by ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_request_and_dial(), and parkandannounce_exec().
03001 { 03002 int dummy_outstate; 03003 int cause = 0; 03004 struct ast_channel *chan; 03005 int res = 0; 03006 int last_subclass = 0; 03007 03008 if (outstate) 03009 *outstate = 0; 03010 else 03011 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 03012 03013 chan = ast_request(type, format, data, &cause); 03014 if (!chan) { 03015 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 03016 /* compute error and return */ 03017 if (cause == AST_CAUSE_BUSY) 03018 *outstate = AST_CONTROL_BUSY; 03019 else if (cause == AST_CAUSE_CONGESTION) 03020 *outstate = AST_CONTROL_CONGESTION; 03021 return NULL; 03022 } 03023 03024 if (oh) { 03025 if (oh->vars) 03026 ast_set_variables(chan, oh->vars); 03027 /* XXX why is this necessary, for the parent_channel perhaps ? */ 03028 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 03029 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 03030 if (oh->parent_channel) 03031 ast_channel_inherit_variables(oh->parent_channel, chan); 03032 if (oh->account) 03033 ast_cdr_setaccount(chan, oh->account); 03034 } 03035 ast_set_callerid(chan, cid_num, cid_name, cid_num); 03036 03037 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 03038 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 03039 } else { 03040 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 03041 while (timeout && chan->_state != AST_STATE_UP) { 03042 struct ast_frame *f; 03043 res = ast_waitfor(chan, timeout); 03044 if (res <= 0) /* error, timeout, or done */ 03045 break; 03046 if (timeout > -1) 03047 timeout = res; 03048 f = ast_read(chan); 03049 if (!f) { 03050 *outstate = AST_CONTROL_HANGUP; 03051 res = 0; 03052 break; 03053 } 03054 if (f->frametype == AST_FRAME_CONTROL) { 03055 switch (f->subclass) { 03056 case AST_CONTROL_RINGING: /* record but keep going */ 03057 *outstate = f->subclass; 03058 break; 03059 03060 case AST_CONTROL_BUSY: 03061 case AST_CONTROL_CONGESTION: 03062 case AST_CONTROL_ANSWER: 03063 *outstate = f->subclass; 03064 timeout = 0; /* trick to force exit from the while() */ 03065 break; 03066 03067 /* Ignore these */ 03068 case AST_CONTROL_PROGRESS: 03069 case AST_CONTROL_PROCEEDING: 03070 case AST_CONTROL_HOLD: 03071 case AST_CONTROL_UNHOLD: 03072 case AST_CONTROL_VIDUPDATE: 03073 case AST_CONTROL_SRCUPDATE: 03074 case -1: /* Ignore -- just stopping indications */ 03075 break; 03076 03077 default: 03078 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 03079 } 03080 last_subclass = f->subclass; 03081 } 03082 ast_frfree(f); 03083 } 03084 } 03085 03086 /* Final fixups */ 03087 if (oh) { 03088 if (!ast_strlen_zero(oh->context)) 03089 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 03090 if (!ast_strlen_zero(oh->exten)) 03091 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 03092 if (oh->priority) 03093 chan->priority = oh->priority; 03094 } 03095 if (chan->_state == AST_STATE_UP) 03096 *outstate = AST_CONTROL_ANSWER; 03097 03098 if (res <= 0) { 03099 if ( AST_CONTROL_RINGING == last_subclass ) 03100 chan->hangupcause = AST_CAUSE_NO_ANSWER; 03101 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 03102 ast_cdr_init(chan->cdr, chan); 03103 if (chan->cdr) { 03104 char tmp[256]; 03105 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 03106 ast_cdr_setapp(chan->cdr,"Dial",tmp); 03107 ast_cdr_update(chan); 03108 ast_cdr_start(chan->cdr); 03109 ast_cdr_end(chan->cdr); 03110 /* If the cause wasn't handled properly */ 03111 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 03112 ast_cdr_failed(chan->cdr); 03113 } 03114 ast_hangup(chan); 03115 chan = NULL; 03116 } 03117 return chan; 03118 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1632 of file channel.c.
References ast_generator::alloc, ast_channel_lock, ast_channel_unlock, ast_prod(), ast_settimeout(), gen, ast_channel::generator, generator_force(), ast_channel::generatordata, and ast_generator::release.
Referenced by app_exec(), ast_channel_start_silence_generator(), ast_linear_stream(), ast_playtones_start(), ast_tonepair_start(), channel_spy(), local_ast_moh_start(), and old_milliwatt_exec().
01633 { 01634 int res = 0; 01635 01636 ast_channel_lock(chan); 01637 01638 if (chan->generatordata) { 01639 if (chan->generator && chan->generator->release) 01640 chan->generator->release(chan, chan->generatordata); 01641 chan->generatordata = NULL; 01642 } 01643 01644 ast_prod(chan); 01645 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01646 res = -1; 01647 } 01648 01649 if (!res) { 01650 ast_settimeout(chan, 160, generator_force, chan); 01651 chan->generator = gen; 01652 } 01653 01654 ast_channel_unlock(chan); 01655 01656 return res; 01657 }
int ast_active_channels | ( | void | ) |
returns number of active/allocated channels
Returns number of active/allocated channels
Definition at line 443 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, and AST_LIST_UNLOCK.
Referenced by action_corestatus(), dahdi_restart(), handle_show_settings(), and quit_handler().
00444 { 00445 struct ast_channel *c; 00446 int cnt = 0; 00447 AST_LIST_LOCK(&channels); 00448 AST_LIST_TRAVERSE(&channels, c, chan_list) 00449 cnt++; 00450 AST_LIST_UNLOCK(&channels); 00451 return cnt; 00452 }
int ast_answer | ( | struct ast_channel * | chan | ) |
Answer a ringing call.
chan | channel to answer This function answers a channel and handles all necessary call setup functions. |
Definition at line 1553 of file channel.c.
References ast_channel::_state, ast_channel_tech::answer, ast_cdr_answer(), ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, ast_indicate(), ast_setstate(), AST_STATE_RING, AST_STATE_RINGING, AST_STATE_UP, ast_test_flag, ast_channel::cdr, ast_channel::tech, and ast_channel::visible_indication.
Referenced by __login_exec(), agi_exec_full(), alarmreceiver_exec(), answer_trunk_chan(), app_exec(), ast_bridge_call(), ast_control_streamfile(), ast_pickup_call(), auth_exec(), background_detect_exec(), builtin_parkcall(), common_exec(), conf_exec(), count_exec(), dictate_exec(), directory_exec(), disa_exec(), exec(), features_answer(), handle_answer(), ices_exec(), old_milliwatt_exec(), park_call_exec(), park_exec(), pbx_builtin_answer(), pbx_builtin_background(), pickup_do(), playback_exec(), privacy_exec(), read_exec(), sayunixtime_exec(), send_waveform_to_channel(), skel_exec(), sla_station_exec(), speech_background(), testclient_exec(), testserver_exec(), vm_exec(), vm_execmain(), waitforsilence_exec(), and zapateller_exec().
01554 { 01555 int res = 0; 01556 ast_channel_lock(chan); 01557 /* You can't answer an outbound call */ 01558 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01559 ast_channel_unlock(chan); 01560 return 0; 01561 } 01562 /* Stop if we're a zombie or need a soft hangup */ 01563 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01564 ast_channel_unlock(chan); 01565 return -1; 01566 } 01567 switch(chan->_state) { 01568 case AST_STATE_RINGING: 01569 case AST_STATE_RING: 01570 if (chan->tech->answer) 01571 res = chan->tech->answer(chan); 01572 ast_setstate(chan, AST_STATE_UP); 01573 ast_cdr_answer(chan->cdr); 01574 break; 01575 case AST_STATE_UP: 01576 break; 01577 default: 01578 break; 01579 } 01580 ast_indicate(chan, -1); 01581 chan->visible_indication = 0; 01582 ast_channel_unlock(chan); 01583 return res; 01584 }
void ast_begin_shutdown | ( | int | hangup | ) |
Initiate system shutdown.
Initiate system shutdown -- prevents new channels from being allocated. If "hangup" is non-zero, all existing channels will receive soft hangups
Definition at line 430 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_softhangup(), and AST_SOFTHANGUP_SHUTDOWN.
Referenced by quit_handler().
00431 { 00432 struct ast_channel *c; 00433 shutting_down = 1; 00434 if (hangup) { 00435 AST_LIST_LOCK(&channels); 00436 AST_LIST_TRAVERSE(&channels, c, chan_list) 00437 ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN); 00438 AST_LIST_UNLOCK(&channels); 00439 } 00440 }
int ast_best_codec | ( | int | fmts | ) |
Pick the best audio codec.
Pick the best codec
Okay, ulaw is used by all telephony equipment, so start with it
Unless of course, you're a silly European, so then prefer ALAW
G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority
Okay, well, signed linear is easy to translate into other stuff
G.726 is standard ADPCM, in RFC3551 packing order
G.726 is standard ADPCM, in AAL2 packing order
ADPCM has great sound quality and is still pretty easy to translate
Okay, we're down to vocoders now, so pick GSM because it's small and easier to translate and sounds pretty good
iLBC is not too bad
Speex is free, but computationally more expensive than GSM
Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough to use it
G.729a is faster than 723 and slightly less expensive
Down to G.723.1 which is proprietary but at least designed for voice
Definition at line 655 of file channel.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_AUDIO_MASK, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_log(), LOG_WARNING, and prefs.
Referenced by __login_exec(), __oh323_new(), agent_call(), ast_codec_choose(), ast_iax2_new(), do_atxfer(), echo_exec(), findmeexec(), gtalk_new(), handle_open_receive_channel_ack_message(), iax2_request(), local_new(), mgcp_new(), sip_new(), skinny_new(), socket_process(), and transmit_connect().
00656 { 00657 /* This just our opinion, expressed in code. We are asked to choose 00658 the best codec to use, given no information */ 00659 int x; 00660 static int prefs[] = 00661 { 00662 /*! Okay, ulaw is used by all telephony equipment, so start with it */ 00663 AST_FORMAT_ULAW, 00664 /*! Unless of course, you're a silly European, so then prefer ALAW */ 00665 AST_FORMAT_ALAW, 00666 /*! G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority */ 00667 AST_FORMAT_G722, 00668 /*! Okay, well, signed linear is easy to translate into other stuff */ 00669 AST_FORMAT_SLINEAR, 00670 /*! G.726 is standard ADPCM, in RFC3551 packing order */ 00671 AST_FORMAT_G726, 00672 /*! G.726 is standard ADPCM, in AAL2 packing order */ 00673 AST_FORMAT_G726_AAL2, 00674 /*! ADPCM has great sound quality and is still pretty easy to translate */ 00675 AST_FORMAT_ADPCM, 00676 /*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to 00677 translate and sounds pretty good */ 00678 AST_FORMAT_GSM, 00679 /*! iLBC is not too bad */ 00680 AST_FORMAT_ILBC, 00681 /*! Speex is free, but computationally more expensive than GSM */ 00682 AST_FORMAT_SPEEX, 00683 /*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough 00684 to use it */ 00685 AST_FORMAT_LPC10, 00686 /*! G.729a is faster than 723 and slightly less expensive */ 00687 AST_FORMAT_G729A, 00688 /*! Down to G.723.1 which is proprietary but at least designed for voice */ 00689 AST_FORMAT_G723_1, 00690 }; 00691 00692 /* Strip out video */ 00693 fmts &= AST_FORMAT_AUDIO_MASK; 00694 00695 /* Find the first preferred codec in the format given */ 00696 for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++) 00697 if (fmts & prefs[x]) 00698 return prefs[x]; 00699 ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts); 00700 return 0; 00701 }
struct ast_channel* ast_bridged_channel | ( | struct ast_channel * | chan | ) |
Find bridged channel.
chan | Current channel |
Definition at line 3847 of file channel.c.
References ast_channel::_bridge, ast_channel_tech::bridged_channel, and ast_channel::tech.
Referenced by __dahdi_exception(), action_agents(), agents_show(), agents_show_online(), ast_bridge_call(), ast_channel_masquerade(), attempt_transfer(), cb_events(), check_bridge(), common_exec(), console_transfer(), console_transfer_deprecated(), create_jb(), dahdi_handle_event(), dahdi_hangup(), export_aoc_vars(), handle_chanlist(), handle_chanlist_deprecated(), handle_hd_hf(), handle_invite_replaces(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response_invite(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_hangup(), mgcp_ss(), misdn_transfer_bc(), mixmonitor_thread(), park_call_full(), schedule_delivery(), sip_read(), socket_process(), ss_thread(), start_spying(), and startmon().
03848 { 03849 struct ast_channel *bridged; 03850 bridged = chan->_bridge; 03851 if (bridged && bridged->tech->bridged_channel) 03852 bridged = bridged->tech->bridged_channel(chan, bridged); 03853 return bridged; 03854 }
int ast_call | ( | struct ast_channel * | chan, | |
char * | addr, | |||
int | timeout | |||
) |
Make a call.
chan | which channel to make the call on | |
addr | destination of the call | |
timeout | time to wait on for connect Place a call, take no longer than timeout ms. |
Definition at line 3175 of file channel.c.
References AST_CDR_FLAG_DIALED, ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, ast_set_flag, ast_test_flag, ast_channel_tech::call, ast_channel::cdr, and ast_channel::tech.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), connect_link(), do_idle_thread(), features_call(), findmeexec(), ring_entry(), rpt(), and wait_for_answer().
03176 { 03177 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03178 If the remote end does not answer within the timeout, then do NOT hang up, but 03179 return anyway. */ 03180 int res = -1; 03181 /* Stop if we're a zombie or need a soft hangup */ 03182 ast_channel_lock(chan); 03183 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03184 if (chan->cdr) 03185 ast_set_flag(chan->cdr, AST_CDR_FLAG_DIALED); 03186 if (chan->tech->call) 03187 res = chan->tech->call(chan, addr, timeout); 03188 ast_set_flag(chan, AST_FLAG_OUTGOING); 03189 } 03190 ast_channel_unlock(chan); 03191 return res; 03192 }
void ast_cancel_shutdown | ( | void | ) |
Cancel a shutdown in progress.
Cancels an existing shutdown and returns to normal operation
Definition at line 455 of file channel.c.
Referenced by handle_abort_halt().
00456 { 00457 shutting_down = 0; 00458 }
const char* ast_cause2str | ( | int | state | ) |
Gives the string form of a given hangup cause.
state | cause to get the description of Give a name to a cause code Returns the text form of the binary cause code given |
Definition at line 575 of file channel.c.
Referenced by __transmit_response(), ast_do_masquerade(), ast_hangup(), findmeexec(), pbx_retrieve_variable(), sip_hangup(), and transmit_request_with_auth().
00576 { 00577 int x; 00578 00579 for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) { 00580 if (causes[x].cause == cause) 00581 return causes[x].desc; 00582 } 00583 00584 return "Unknown"; 00585 }
void ast_change_name | ( | struct ast_channel * | chan, | |
char * | newname | |||
) |
Change channel name.
Definition at line 3425 of file channel.c.
References ast_string_field_set, manager_event(), ast_channel::name, name, and ast_channel::uniqueid.
03426 { 03427 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03428 ast_string_field_set(chan, name, newname); 03429 }
struct ast_channel* ast_channel_alloc | ( | int | needqueue, | |
int | state, | |||
const char * | cid_num, | |||
const char * | cid_name, | |||
const char * | acctcode, | |||
const char * | exten, | |||
const char * | context, | |||
const int | amaflag, | |||
const char * | name_fmt, | |||
... | ||||
) |
Create a channel structure.
Definition at line 709 of file channel.c.
References ast_calloc, ast_log(), AST_MAX_FDS, ast_string_field_init, DAHDI_FILE_TIMER, ast_channel::flags, free, LOG_WARNING, sched_context_create(), and sched_context_destroy().
Referenced by __oh323_new(), acf_odbc_read(), acf_odbc_write(), action_getvar(), agent_new(), alsa_new(), ast_async_goto(), ast_iax2_new(), ast_pbx_outgoing_cdr_failed(), ast_pbx_outgoing_exten(), check_goto_on_transfer(), dahdi_new(), do_atxfer(), features_new(), gtalk_new(), iax_park(), local_new(), make_email_file(), masq_park_call(), mgcp_new(), misdn_new(), nbs_new(), oss_new(), pbx_substitute_variables_helper_full(), phone_new(), sendpage(), sip_new(), sip_park(), and skinny_new().
00710 { 00711 struct ast_channel *tmp; 00712 int x; 00713 int flags; 00714 struct varshead *headp; 00715 va_list ap1, ap2; 00716 00717 /* If shutting down, don't allocate any new channels */ 00718 if (shutting_down) { 00719 ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n"); 00720 return NULL; 00721 } 00722 00723 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) 00724 return NULL; 00725 00726 if (!(tmp->sched = sched_context_create())) { 00727 ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n"); 00728 free(tmp); 00729 return NULL; 00730 } 00731 00732 if ((ast_string_field_init(tmp, 128))) { 00733 sched_context_destroy(tmp->sched); 00734 free(tmp); 00735 return NULL; 00736 } 00737 00738 /* Don't bother initializing the last two FD here, because they 00739 will *always* be set just a few lines down (AST_TIMING_FD, 00740 AST_ALERT_FD). */ 00741 for (x = 0; x < AST_MAX_FDS - 2; x++) 00742 tmp->fds[x] = -1; 00743 00744 #ifdef HAVE_DAHDI 00745 00746 tmp->timingfd = open(DAHDI_FILE_TIMER, O_RDWR); 00747 00748 if (tmp->timingfd > -1) { 00749 /* Check if timing interface supports new 00750 ping/pong scheme */ 00751 flags = 1; 00752 if (!ioctl(tmp->timingfd, DAHDI_TIMERPONG, &flags)) 00753 needqueue = 0; 00754 } 00755 #else 00756 tmp->timingfd = -1; 00757 #endif 00758 00759 if (needqueue) { 00760 if (pipe(tmp->alertpipe)) { 00761 ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe!\n"); 00762 alertpipe_failed: 00763 #ifdef HAVE_DAHDI 00764 if (tmp->timingfd > -1) 00765 close(tmp->timingfd); 00766 #endif 00767 sched_context_destroy(tmp->sched); 00768 ast_string_field_free_memory(tmp); 00769 free(tmp); 00770 return NULL; 00771 } else { 00772 flags = fcntl(tmp->alertpipe[0], F_GETFL); 00773 if (fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 00774 ast_log(LOG_WARNING, "Channel allocation failed: Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 00775 close(tmp->alertpipe[0]); 00776 close(tmp->alertpipe[1]); 00777 goto alertpipe_failed; 00778 } 00779 flags = fcntl(tmp->alertpipe[1], F_GETFL); 00780 if (fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK) < 0) { 00781 ast_log(LOG_WARNING, "Channel allocation failed: Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 00782 close(tmp->alertpipe[0]); 00783 close(tmp->alertpipe[1]); 00784 goto alertpipe_failed; 00785 } 00786 } 00787 } else /* Make sure we've got it done right if they don't */ 00788 tmp->alertpipe[0] = tmp->alertpipe[1] = -1; 00789 00790 /* Always watch the alertpipe */ 00791 tmp->fds[AST_ALERT_FD] = tmp->alertpipe[0]; 00792 /* And timing pipe */ 00793 tmp->fds[AST_TIMING_FD] = tmp->timingfd; 00794 ast_string_field_set(tmp, name, "**Unknown**"); 00795 00796 /* Initial state */ 00797 tmp->_state = state; 00798 00799 tmp->streamid = -1; 00800 00801 tmp->fin = global_fin; 00802 tmp->fout = global_fout; 00803 00804 if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) { 00805 ast_string_field_build(tmp, uniqueid, "%li.%d", (long) time(NULL), 00806 ast_atomic_fetchadd_int(&uniqueint, 1)); 00807 } else { 00808 ast_string_field_build(tmp, uniqueid, "%s-%li.%d", ast_config_AST_SYSTEM_NAME, 00809 (long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00810 } 00811 00812 tmp->cid.cid_name = ast_strdup(cid_name); 00813 tmp->cid.cid_num = ast_strdup(cid_num); 00814 00815 if (!ast_strlen_zero(name_fmt)) { 00816 /* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call. 00817 * And they all use slightly different formats for their name string. 00818 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here. 00819 * This means, that the stringfields must have a routine that takes the va_lists directly, and 00820 * uses them to build the string, instead of forming the va_lists internally from the vararg ... list. 00821 * This new function was written so this can be accomplished. 00822 */ 00823 va_start(ap1, name_fmt); 00824 va_start(ap2, name_fmt); 00825 ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2); 00826 va_end(ap1); 00827 va_end(ap2); 00828 } 00829 00830 /* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */ 00831 00832 /* These 4 variables need to be set up for the cdr_init() to work right */ 00833 if (amaflag) 00834 tmp->amaflags = amaflag; 00835 else 00836 tmp->amaflags = ast_default_amaflags; 00837 00838 if (!ast_strlen_zero(acctcode)) 00839 ast_string_field_set(tmp, accountcode, acctcode); 00840 else 00841 ast_string_field_set(tmp, accountcode, ast_default_accountcode); 00842 00843 if (!ast_strlen_zero(context)) 00844 ast_copy_string(tmp->context, context, sizeof(tmp->context)); 00845 else 00846 strcpy(tmp->context, "default"); 00847 00848 if (!ast_strlen_zero(exten)) 00849 ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); 00850 else 00851 strcpy(tmp->exten, "s"); 00852 00853 tmp->priority = 1; 00854 00855 tmp->cdr = ast_cdr_alloc(); 00856 ast_cdr_init(tmp->cdr, tmp); 00857 ast_cdr_start(tmp->cdr); 00858 00859 headp = &tmp->varshead; 00860 AST_LIST_HEAD_INIT_NOLOCK(headp); 00861 00862 ast_mutex_init(&tmp->lock); 00863 00864 AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores); 00865 00866 ast_string_field_set(tmp, language, defaultlanguage); 00867 00868 tmp->tech = &null_tech; 00869 00870 AST_LIST_LOCK(&channels); 00871 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00872 AST_LIST_UNLOCK(&channels); 00873 00874 /*\!note 00875 * and now, since the channel structure is built, and has its name, let's 00876 * call the manager event generator with this Newchannel event. This is the 00877 * proper and correct place to make this call, but you sure do have to pass 00878 * a lot of data into this func to do it here! 00879 */ 00880 if (!ast_strlen_zero(name_fmt)) { 00881 manager_event(EVENT_FLAG_CALL, "Newchannel", 00882 "Channel: %s\r\n" 00883 "State: %s\r\n" 00884 "CallerIDNum: %s\r\n" 00885 "CallerIDName: %s\r\n" 00886 "Uniqueid: %s\r\n", 00887 tmp->name, ast_state2str(state), 00888 S_OR(cid_num, "<unknown>"), 00889 S_OR(cid_name, "<unknown>"), 00890 tmp->uniqueid); 00891 } 00892 00893 return tmp; 00894 }
enum ast_bridge_result ast_channel_bridge | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1, | |||
struct ast_bridge_config * | config, | |||
struct ast_frame ** | fo, | |||
struct ast_channel ** | rc | |||
) |
Bridge two channels together.
Bridge two channels together
c0 | first channel to bridge | |
c1 | second channel to bridge | |
config | config for the channels | |
fo | destination frame(?) | |
rc | destination channel(?) Bridge two channels (c0 and c1) together. If an important frame occurs, we return that frame in rf (remember, it could be NULL) and which channel (0 or 1) in rc |
Definition at line 4042 of file channel.c.
References ast_channel::_bridge, ast_channel::_softhangup, AST_BRIDGE_COMPLETE, AST_BRIDGE_FAILED, AST_BRIDGE_FAILED_NOWARN, AST_BRIDGE_RETRY, ast_channel_make_compatible(), ast_check_hangup(), ast_check_hangup_locked(), ast_clear_flag, AST_CONTROL_SRCUPDATE, AST_FEATURE_PLAY_WARNING, AST_FEATURE_REDIRECT, AST_FLAG_END_DTMF_ONLY, AST_FLAG_NBRIDGE, AST_FLAG_ZOMBIE, ast_generic_bridge(), ast_indicate(), ast_log(), ast_samp2tv(), ast_set_flag, AST_SOFTHANGUP_UNBRIDGE, ast_strlen_zero(), ast_test_flag, ast_tvadd(), ast_tvdiff_ms(), ast_tvnow(), ast_tvsub(), ast_tvzero(), ast_verbose(), ast_channel::audiohooks, ast_channel_tech::bridge, bridge_playfile(), ast_channel::cid, ast_callerid::cid_num, config, ast_channel::generator, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::monitor, ast_channel::name, ast_channel::nativeformats, option_debug, option_verbose, pbx_builtin_getvar_helper(), pbx_builtin_setvar_helper(), ast_channel::readformat, ast_channel_tech::send_digit_begin, t, ast_channel::tech, ast_channel::uniqueid, VERBOSE_PREFIX_3, and ast_channel::writeformat.
Referenced by ast_bridge_call().
04044 { 04045 struct ast_channel *who = NULL; 04046 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04047 int nativefailed=0; 04048 int firstpass; 04049 int o0nativeformats; 04050 int o1nativeformats; 04051 long time_left_ms=0; 04052 struct timeval nexteventts = { 0, }; 04053 char caller_warning = 0; 04054 char callee_warning = 0; 04055 04056 if (c0->_bridge) { 04057 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04058 c0->name, c0->_bridge->name); 04059 return -1; 04060 } 04061 if (c1->_bridge) { 04062 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04063 c1->name, c1->_bridge->name); 04064 return -1; 04065 } 04066 04067 /* Stop if we're a zombie or need a soft hangup */ 04068 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04069 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 04070 return -1; 04071 04072 *fo = NULL; 04073 firstpass = config->firstpass; 04074 config->firstpass = 0; 04075 04076 if (ast_tvzero(config->start_time)) 04077 config->start_time = ast_tvnow(); 04078 time_left_ms = config->timelimit; 04079 04080 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 04081 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 04082 04083 if (config->start_sound && firstpass) { 04084 if (caller_warning) 04085 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 04086 if (callee_warning) 04087 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 04088 } 04089 04090 /* Keep track of bridge */ 04091 c0->_bridge = c1; 04092 c1->_bridge = c0; 04093 04094 /* \todo XXX here should check that cid_num is not NULL */ 04095 manager_event(EVENT_FLAG_CALL, "Link", 04096 "Channel1: %s\r\n" 04097 "Channel2: %s\r\n" 04098 "Uniqueid1: %s\r\n" 04099 "Uniqueid2: %s\r\n" 04100 "CallerID1: %s\r\n" 04101 "CallerID2: %s\r\n", 04102 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04103 04104 o0nativeformats = c0->nativeformats; 04105 o1nativeformats = c1->nativeformats; 04106 04107 if (config->feature_timer) { 04108 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 04109 } else if (config->timelimit) { 04110 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04111 if (caller_warning || callee_warning) 04112 nexteventts = ast_tvsub(nexteventts, ast_samp2tv(config->play_warning, 1000)); 04113 } 04114 04115 if (!c0->tech->send_digit_begin) 04116 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 04117 if (!c1->tech->send_digit_begin) 04118 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 04119 04120 /* Before we enter in and bridge these two together tell them both the source of audio has changed */ 04121 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04122 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04123 04124 for (/* ever */;;) { 04125 struct timeval now = { 0, }; 04126 int to; 04127 04128 to = -1; 04129 04130 if (!ast_tvzero(nexteventts)) { 04131 now = ast_tvnow(); 04132 to = ast_tvdiff_ms(nexteventts, now); 04133 if (to <= 0) { 04134 if (!config->timelimit) { 04135 res = AST_BRIDGE_COMPLETE; 04136 break; 04137 } 04138 to = 0; 04139 } 04140 } 04141 04142 if (config->timelimit) { 04143 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04144 if (time_left_ms < to) 04145 to = time_left_ms; 04146 04147 if (time_left_ms <= 0) { 04148 if (caller_warning && config->end_sound) 04149 bridge_playfile(c0, c1, config->end_sound, 0); 04150 if (callee_warning && config->end_sound) 04151 bridge_playfile(c1, c0, config->end_sound, 0); 04152 *fo = NULL; 04153 if (who) 04154 *rc = who; 04155 res = 0; 04156 break; 04157 } 04158 04159 if (!to) { 04160 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning) { 04161 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04162 if (caller_warning) 04163 bridge_playfile(c0, c1, config->warning_sound, t); 04164 if (callee_warning) 04165 bridge_playfile(c1, c0, config->warning_sound, t); 04166 } 04167 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04168 nexteventts = ast_tvadd(nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04169 else 04170 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04171 } 04172 } 04173 04174 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04175 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04176 c0->_softhangup = 0; 04177 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04178 c1->_softhangup = 0; 04179 c0->_bridge = c1; 04180 c1->_bridge = c0; 04181 if (option_debug) 04182 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04183 continue; 04184 } 04185 04186 /* Stop if we're a zombie or need a soft hangup */ 04187 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04188 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04189 *fo = NULL; 04190 if (who) 04191 *rc = who; 04192 res = 0; 04193 if (option_debug) 04194 ast_log(LOG_DEBUG, "Bridge stops because we're zombie or need a soft hangup: c0=%s, c1=%s, flags: %s,%s,%s,%s\n", 04195 c0->name, c1->name, 04196 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04197 ast_check_hangup(c0) ? "Yes" : "No", 04198 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04199 ast_check_hangup(c1) ? "Yes" : "No"); 04200 break; 04201 } 04202 04203 /* See if the BRIDGEPEER variable needs to be updated */ 04204 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) 04205 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name); 04206 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) 04207 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name); 04208 04209 if (c0->tech->bridge && 04210 (config->timelimit == 0) && 04211 (c0->tech->bridge == c1->tech->bridge) && 04212 !nativefailed && !c0->monitor && !c1->monitor && 04213 !c0->audiohooks && !c1->audiohooks && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04214 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04215 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04216 /* Looks like they share a bridge method and nothing else is in the way */ 04217 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04218 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04219 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04220 /* \todo XXX here should check that cid_num is not NULL */ 04221 manager_event(EVENT_FLAG_CALL, "Unlink", 04222 "Channel1: %s\r\n" 04223 "Channel2: %s\r\n" 04224 "Uniqueid1: %s\r\n" 04225 "Uniqueid2: %s\r\n" 04226 "CallerID1: %s\r\n" 04227 "CallerID2: %s\r\n", 04228 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04229 if (option_debug) 04230 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04231 04232 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04233 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04234 04235 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04236 continue; 04237 04238 c0->_bridge = NULL; 04239 c1->_bridge = NULL; 04240 04241 return res; 04242 } else { 04243 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04244 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04245 } 04246 switch (res) { 04247 case AST_BRIDGE_RETRY: 04248 continue; 04249 default: 04250 if (option_verbose > 2) 04251 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04252 c0->name, c1->name); 04253 /* fallthrough */ 04254 case AST_BRIDGE_FAILED_NOWARN: 04255 nativefailed++; 04256 break; 04257 } 04258 } 04259 04260 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04261 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04262 !(c0->generator || c1->generator)) { 04263 if (ast_channel_make_compatible(c0, c1)) { 04264 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04265 /* \todo XXX here should check that cid_num is not NULL */ 04266 manager_event(EVENT_FLAG_CALL, "Unlink", 04267 "Channel1: %s\r\n" 04268 "Channel2: %s\r\n" 04269 "Uniqueid1: %s\r\n" 04270 "Uniqueid2: %s\r\n" 04271 "CallerID1: %s\r\n" 04272 "CallerID2: %s\r\n", 04273 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04274 return AST_BRIDGE_FAILED; 04275 } 04276 o0nativeformats = c0->nativeformats; 04277 o1nativeformats = c1->nativeformats; 04278 } 04279 04280 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) 04281 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name); 04282 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) 04283 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name); 04284 04285 res = ast_generic_bridge(c0, c1, config, fo, rc, nexteventts); 04286 if (res != AST_BRIDGE_RETRY) 04287 break; 04288 } 04289 04290 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04291 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04292 04293 /* Now that we have broken the bridge the source will change yet again */ 04294 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04295 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04296 04297 c0->_bridge = NULL; 04298 c1->_bridge = NULL; 04299 04300 /* \todo XXX here should check that cid_num is not NULL */ 04301 manager_event(EVENT_FLAG_CALL, "Unlink", 04302 "Channel1: %s\r\n" 04303 "Channel2: %s\r\n" 04304 "Uniqueid1: %s\r\n" 04305 "Uniqueid2: %s\r\n" 04306 "CallerID1: %s\r\n" 04307 "CallerID2: %s\r\n", 04308 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04309 if (option_debug) 04310 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04311 04312 return res; 04313 }
int ast_channel_cmpwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Compare a offset with the settings of when to hang a channel up.
chan | channel on which to check for hang up | |
offset | offset in seconds from current time |
Definition at line 475 of file channel.c.
References ast_channel::whentohangup.
00476 { 00477 time_t whentohangup; 00478 00479 if (chan->whentohangup == 0) { 00480 return (offset == 0) ? 0 : -1; 00481 } else { 00482 if (offset == 0) /* XXX why is this special ? */ 00483 return (1); 00484 else { 00485 whentohangup = offset + time (NULL); 00486 if (chan->whentohangup < whentohangup) 00487 return (1); 00488 else if (chan->whentohangup == whentohangup) 00489 return (0); 00490 else 00491 return (-1); 00492 } 00493 } 00494 }
int ast_channel_datastore_add | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Add a datastore to a channel.
Definition at line 1370 of file channel.c.
References AST_LIST_INSERT_HEAD, ast_channel::datastores, and ast_datastore::entry.
Referenced by _macro_exec(), setup_chanspy_ds(), setup_inheritance_datastore(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01371 { 01372 int res = 0; 01373 01374 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01375 01376 return res; 01377 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1309 of file channel.c.
References ast_calloc, ast_strdup, and ast_datastore::info.
Referenced by _macro_exec(), ast_channel_datastore_inherit(), setup_chanspy_ds(), setup_inheritance_datastore(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01310 { 01311 struct ast_datastore *datastore = NULL; 01312 01313 /* Make sure we at least have type so we can identify this */ 01314 if (info == NULL) { 01315 return NULL; 01316 } 01317 01318 /* Allocate memory for datastore and clear it */ 01319 datastore = ast_calloc(1, sizeof(*datastore)); 01320 if (datastore == NULL) { 01321 return NULL; 01322 } 01323 01324 datastore->info = info; 01325 01326 datastore->uid = ast_strdup(uid); 01327 01328 return datastore; 01329 }
struct ast_datastore* ast_channel_datastore_find | ( | struct ast_channel * | chan, | |
const struct ast_datastore_info * | info, | |||
char * | uid | |||
) |
Find a datastore on a channel.
Definition at line 1397 of file channel.c.
References AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_channel::datastores, ast_datastore::entry, ast_datastore::info, and ast_datastore::uid.
Referenced by _macro_exec(), attended_transfer_occurred(), chanspy_ds_free(), do_atxfer(), do_parking_thread(), find_speech(), func_inheritance_write(), queue_transfer_fixup(), smdi_msg_read(), speech_background(), speech_destroy(), and try_calling().
01398 { 01399 struct ast_datastore *datastore = NULL; 01400 01401 if (info == NULL) 01402 return NULL; 01403 01404 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01405 if (datastore->info == info) { 01406 if (uid != NULL && datastore->uid != NULL) { 01407 if (!strcasecmp(uid, datastore->uid)) { 01408 /* Matched by type AND uid */ 01409 break; 01410 } 01411 } else { 01412 /* Matched by type at least */ 01413 break; 01414 } 01415 } 01416 } 01417 AST_LIST_TRAVERSE_SAFE_END 01418 01419 return datastore; 01420 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1331 of file channel.c.
References ast_datastore::data, ast_datastore_info::destroy, free, ast_datastore::info, and ast_datastore::uid.
Referenced by ast_channel_free(), chanspy_ds_free(), setup_inheritance_datastore(), and try_calling().
01332 { 01333 int res = 0; 01334 01335 /* Using the destroy function (if present) destroy the data */ 01336 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01337 datastore->info->destroy(datastore->data); 01338 datastore->data = NULL; 01339 } 01340 01341 /* Free allocated UID memory */ 01342 if (datastore->uid != NULL) { 01343 free(datastore->uid); 01344 datastore->uid = NULL; 01345 } 01346 01347 /* Finally free memory used by ourselves */ 01348 free(datastore); 01349 01350 return res; 01351 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1353 of file channel.c.
References ast_channel_datastore_alloc(), AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_datastore::data, DATASTORE_INHERIT_FOREVER, ast_channel::datastores, ast_datastore_info::duplicate, ast_datastore::entry, ast_datastore::info, ast_datastore::inheritance, and ast_datastore::uid.
Referenced by local_call(), and wait_for_answer().
01354 { 01355 struct ast_datastore *datastore = NULL, *datastore2; 01356 01357 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01358 if (datastore->inheritance > 0) { 01359 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01360 if (datastore2) { 01361 datastore2->data = datastore->info->duplicate ? datastore->info->duplicate(datastore->data) : NULL; 01362 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01363 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01364 } 01365 } 01366 } 01367 return 0; 01368 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1379 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_channel::datastores, and ast_datastore::entry.
Referenced by chanspy_ds_free(), queue_transfer_fixup(), speech_background(), speech_destroy(), and try_calling().
01380 { 01381 struct ast_datastore *datastore2 = NULL; 01382 int res = -1; 01383 01384 /* Find our position and remove ourselves */ 01385 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01386 if (datastore2 == datastore) { 01387 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01388 res = 0; 01389 break; 01390 } 01391 } 01392 AST_LIST_TRAVERSE_SAFE_END 01393 01394 return res; 01395 }
int ast_channel_defer_dtmf | ( | struct ast_channel * | chan | ) |
Set defer DTMF flag on channel.
Defer DTMF so that you only read things like hangups and audio. Returns non-zero if channel was already DTMF-deferred or 0 if channel is just now being DTMF-deferred
Definition at line 1007 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
01008 { 01009 int pre = 0; 01010 01011 if (chan) { 01012 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 01013 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 01014 } 01015 return pre; 01016 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1214 of file channel.c.
References ast_channel::alertpipe, ast_app_group_discard(), ast_cdr_discard(), ast_channel_datastore_free(), ast_channel_lock, AST_CHANNEL_NAME, ast_channel_unlock, ast_copy_string(), ast_device_state_changed_literal(), ast_frfree, ast_jb_destroy(), AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, ast_log(), ast_moh_cleanup(), ast_mutex_destroy(), ast_string_field_free_memory, ast_translator_free_path(), ast_var_delete(), ast_channel::cdr, ast_channel::cid, ast_channel::datastores, ast_datastore::entry, f, free, free_cid(), ast_channel::lock, LOG_ERROR, ast_channel::monitor, ast_channel::music_state, name, ast_channel::name, ast_channel::pbx, ast_channel::readq, ast_channel::readtrans, ast_channel::sched, sched_context_destroy(), ast_channel_monitor::stop, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel::varshead, and ast_channel::writetrans.
Referenced by acf_odbc_read(), acf_odbc_write(), action_getvar(), agent_cleanup(), agent_new(), ast_do_masquerade(), ast_hangup(), ast_iax2_new(), ast_pbx_outgoing_cdr_failed(), gtalk_newcall(), local_new(), make_email_file(), pbx_substitute_variables_helper_full(), and sendpage().
01215 { 01216 int fd; 01217 struct ast_var_t *vardata; 01218 struct ast_frame *f; 01219 struct varshead *headp; 01220 struct ast_datastore *datastore = NULL; 01221 char name[AST_CHANNEL_NAME], *dashptr; 01222 01223 headp=&chan->varshead; 01224 01225 AST_LIST_LOCK(&channels); 01226 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01227 AST_LIST_UNLOCK(&channels); 01228 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01229 } 01230 /* Lock and unlock the channel just to be sure nobody has it locked still 01231 due to a reference retrieved from the channel list. */ 01232 ast_channel_lock(chan); 01233 ast_channel_unlock(chan); 01234 01235 /* Get rid of each of the data stores on the channel */ 01236 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01237 /* Free the data store */ 01238 ast_channel_datastore_free(datastore); 01239 01240 /* Lock and unlock the channel just to be sure nobody has it locked still 01241 due to a reference that was stored in a datastore. (i.e. app_chanspy) */ 01242 ast_channel_lock(chan); 01243 ast_channel_unlock(chan); 01244 01245 if (chan->tech_pvt) { 01246 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01247 free(chan->tech_pvt); 01248 } 01249 01250 if (chan->sched) 01251 sched_context_destroy(chan->sched); 01252 01253 ast_copy_string(name, chan->name, sizeof(name)); 01254 if ((dashptr = strrchr(name, '-'))) { 01255 *dashptr = '\0'; 01256 } 01257 01258 /* Stop monitoring */ 01259 if (chan->monitor) 01260 chan->monitor->stop( chan, 0 ); 01261 01262 /* If there is native format music-on-hold state, free it */ 01263 if (chan->music_state) 01264 ast_moh_cleanup(chan); 01265 01266 /* Free translators */ 01267 if (chan->readtrans) 01268 ast_translator_free_path(chan->readtrans); 01269 if (chan->writetrans) 01270 ast_translator_free_path(chan->writetrans); 01271 if (chan->pbx) 01272 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01273 free_cid(&chan->cid); 01274 /* Close pipes if appropriate */ 01275 if ((fd = chan->alertpipe[0]) > -1) 01276 close(fd); 01277 if ((fd = chan->alertpipe[1]) > -1) 01278 close(fd); 01279 if ((fd = chan->timingfd) > -1) 01280 close(fd); 01281 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01282 ast_frfree(f); 01283 01284 /* loop over the variables list, freeing all data and deleting list items */ 01285 /* no need to lock the list, as the channel is already locked */ 01286 01287 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01288 ast_var_delete(vardata); 01289 01290 ast_app_group_discard(chan); 01291 01292 /* Destroy the jitterbuffer */ 01293 ast_jb_destroy(chan); 01294 01295 if (chan->cdr) { 01296 ast_cdr_discard(chan->cdr); 01297 chan->cdr = NULL; 01298 } 01299 01300 ast_mutex_destroy(&chan->lock); 01301 01302 ast_string_field_free_memory(chan); 01303 free(chan); 01304 AST_LIST_UNLOCK(&channels); 01305 01306 ast_device_state_changed_literal(name); 01307 }
void ast_channel_inherit_variables | ( | const struct ast_channel * | parent, | |
struct ast_channel * | child | |||
) |
Inherits channel variable from parent to child channel.
parent | Parent channel | |
child | Child channel |
Definition at line 3431 of file channel.c.
References AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_log(), ast_var_assign(), ast_var_full_name(), ast_var_name(), ast_var_value(), ast_var_t::entries, LOG_DEBUG, option_debug, and ast_channel::varshead.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), begin_dial(), findmeexec(), ring_entry(), and wait_for_answer().
03432 { 03433 struct ast_var_t *current, *newvar; 03434 const char *varname; 03435 03436 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03437 int vartype = 0; 03438 03439 varname = ast_var_full_name(current); 03440 if (!varname) 03441 continue; 03442 03443 if (varname[0] == '_') { 03444 vartype = 1; 03445 if (varname[1] == '_') 03446 vartype = 2; 03447 } 03448 03449 switch (vartype) { 03450 case 1: 03451 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03452 if (newvar) { 03453 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03454 if (option_debug) 03455 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03456 } 03457 break; 03458 case 2: 03459 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03460 if (newvar) { 03461 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03462 if (option_debug) 03463 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03464 } 03465 break; 03466 default: 03467 if (option_debug) 03468 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03469 break; 03470 } 03471 } 03472 }
int ast_channel_make_compatible | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) |
Makes two channel formats compatible.
c0 | first channel to make compatible | |
c1 | other channel to make compatible Set two channels to compatible formats -- call before ast_channel_bridge in general . |
Definition at line 3284 of file channel.c.
References AST_FORMAT_SLINEAR, ast_log(), ast_opt_transcode_via_slin, ast_set_read_format(), ast_set_write_format(), ast_translate_path_steps(), ast_translator_best_choice(), ast_channel::name, ast_channel::nativeformats, ast_channel::readformat, and ast_channel::writeformat.
Referenced by app_exec(), ast_channel_bridge(), check_compat(), park_exec(), try_calling(), and wait_for_answer().
03285 { 03286 int src; 03287 int dst; 03288 03289 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03290 /* Already compatible! Moving on ... */ 03291 return 0; 03292 } 03293 03294 /* Set up translation from the chan to the peer */ 03295 src = chan->nativeformats; 03296 dst = peer->nativeformats; 03297 if (ast_translator_best_choice(&dst, &src) < 0) { 03298 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03299 return -1; 03300 } 03301 03302 /* if the best path is not 'pass through', then 03303 transcoding is needed; if desired, force transcode path 03304 to use SLINEAR between channels, but only if there is 03305 no direct conversion available */ 03306 if ((src != dst) && ast_opt_transcode_via_slin && 03307 (ast_translate_path_steps(dst, src) != 1)) 03308 dst = AST_FORMAT_SLINEAR; 03309 if (ast_set_read_format(chan, dst) < 0) { 03310 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03311 return -1; 03312 } 03313 if (ast_set_write_format(peer, dst) < 0) { 03314 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03315 return -1; 03316 } 03317 03318 /* Set up translation from the peer to the chan */ 03319 src = peer->nativeformats; 03320 dst = chan->nativeformats; 03321 if (ast_translator_best_choice(&dst, &src) < 0) { 03322 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03323 return -1; 03324 } 03325 03326 /* if the best path is not 'pass through', then 03327 transcoding is needed; if desired, force transcode path 03328 to use SLINEAR between channels, but only if there is 03329 no direct conversion available */ 03330 if ((src != dst) && ast_opt_transcode_via_slin && 03331 (ast_translate_path_steps(dst, src) != 1)) 03332 dst = AST_FORMAT_SLINEAR; 03333 if (ast_set_read_format(peer, dst) < 0) { 03334 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03335 return -1; 03336 } 03337 if (ast_set_write_format(chan, dst) < 0) { 03338 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03339 return -1; 03340 } 03341 return 0; 03342 }
int ast_channel_masquerade | ( | struct ast_channel * | original, | |
struct ast_channel * | clone | |||
) |
Weird function made for call transfers.
original | channel to make a copy of | |
clone | copy of the original channel This is a very strange and freaky function used primarily for transfer. Suppose that "original" and "clone" are two channels in random situations. This function takes the guts out of "clone" and puts them into the "original" channel, then alerts the channel driver of the change, asking it to fixup any private information (like the p->owner pointer) that is affected by the change. The physical layer of the original channel is hung up. |
Definition at line 3344 of file channel.c.
References ast_channel::_bridge, ast_bridged_channel(), ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_log(), ast_null_frame, ast_queue_frame(), ast_channel_tech::get_base_channel, LOG_DEBUG, ast_channel::masq, ast_channel::masqr, ast_channel::name, option_debug, and ast_channel::tech.
Referenced by ast_async_goto(), ast_pickup_call(), attempt_transfer(), check_availability(), check_bridge(), check_goto_on_transfer(), do_atxfer(), handle_invite_replaces(), iax_park(), masq_park_call(), misdn_transfer_bc(), pickup_do(), and sip_park().
03345 { 03346 int res = -1; 03347 struct ast_channel *final_orig, *final_clone, *base; 03348 03349 retrymasq: 03350 final_orig = original; 03351 final_clone = clone; 03352 03353 ast_channel_lock(original); 03354 while (ast_channel_trylock(clone)) { 03355 ast_channel_unlock(original); 03356 usleep(1); 03357 ast_channel_lock(original); 03358 } 03359 03360 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03361 and if so, we don't really want to masquerade it, but its proxy */ 03362 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03363 final_orig = original->_bridge; 03364 03365 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03366 final_clone = clone->_bridge; 03367 03368 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03369 final_clone = base; 03370 } 03371 03372 if ((final_orig != original) || (final_clone != clone)) { 03373 /* Lots and lots of deadlock avoidance. The main one we're competing with 03374 * is ast_write(), which locks channels recursively, when working with a 03375 * proxy channel. */ 03376 if (ast_channel_trylock(final_orig)) { 03377 ast_channel_unlock(clone); 03378 ast_channel_unlock(original); 03379 goto retrymasq; 03380 } 03381 if (ast_channel_trylock(final_clone)) { 03382 ast_channel_unlock(final_orig); 03383 ast_channel_unlock(clone); 03384 ast_channel_unlock(original); 03385 goto retrymasq; 03386 } 03387 ast_channel_unlock(clone); 03388 ast_channel_unlock(original); 03389 original = final_orig; 03390 clone = final_clone; 03391 } 03392 03393 if (original == clone) { 03394 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03395 ast_channel_unlock(clone); 03396 ast_channel_unlock(original); 03397 return -1; 03398 } 03399 03400 if (option_debug) 03401 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03402 clone->name, original->name); 03403 if (original->masq) { 03404 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03405 original->masq->name, original->name); 03406 } else if (clone->masqr) { 03407 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03408 clone->name, clone->masqr->name); 03409 } else { 03410 original->masq = clone; 03411 clone->masqr = original; 03412 ast_queue_frame(original, &ast_null_frame); 03413 ast_queue_frame(clone, &ast_null_frame); 03414 if (option_debug) 03415 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03416 res = 0; 03417 } 03418 03419 ast_channel_unlock(clone); 03420 ast_channel_unlock(original); 03421 03422 return res; 03423 }
char* ast_channel_reason2str | ( | int | reason | ) |
return an english explanation of the code returned thru __ast_request_and_dial's 'outstate' argument
reason | The integer argument, usually taken from AST_CONTROL_ macros |
Definition at line 2977 of file channel.c.
References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_RING, and AST_CONTROL_RINGING.
Referenced by attempt_thread().
02978 { 02979 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 02980 { 02981 case 0: 02982 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 02983 case AST_CONTROL_HANGUP: 02984 return "Hangup"; 02985 case AST_CONTROL_RING: 02986 return "Local Ring"; 02987 case AST_CONTROL_RINGING: 02988 return "Remote end Ringing"; 02989 case AST_CONTROL_ANSWER: 02990 return "Remote end has Answered"; 02991 case AST_CONTROL_BUSY: 02992 return "Remote end is Busy"; 02993 case AST_CONTROL_CONGESTION: 02994 return "Congestion (circuits busy)"; 02995 default: 02996 return "Unknown Reason!!"; 02997 } 02998 }
int ast_channel_register | ( | const struct ast_channel_tech * | tech | ) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports.
tech | Structure defining channel technology or "type" |
Definition at line 497 of file channel.c.
References ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_verbose(), chanlist::list, LOG_DEBUG, LOG_WARNING, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by load_module(), and unload_module().
00498 { 00499 struct chanlist *chan; 00500 00501 AST_LIST_LOCK(&channels); 00502 00503 AST_LIST_TRAVERSE(&backends, chan, list) { 00504 if (!strcasecmp(tech->type, chan->tech->type)) { 00505 ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type); 00506 AST_LIST_UNLOCK(&channels); 00507 return -1; 00508 } 00509 } 00510 00511 if (!(chan = ast_calloc(1, sizeof(*chan)))) { 00512 AST_LIST_UNLOCK(&channels); 00513 return -1; 00514 } 00515 chan->tech = tech; 00516 AST_LIST_INSERT_HEAD(&backends, chan, list); 00517 00518 if (option_debug) 00519 ast_log(LOG_DEBUG, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description); 00520 00521 if (option_verbose > 1) 00522 ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type, 00523 chan->tech->description); 00524 00525 AST_LIST_UNLOCK(&channels); 00526 return 0; 00527 }
int ast_channel_sendhtml | ( | struct ast_channel * | channel, | |
int | subclass, | |||
const char * | data, | |||
int | datalen | |||
) |
Send HTML or URL on link. Returns 0 on success or -1 on failure
Definition at line 3272 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by agent_sendhtml(), ast_channel_sendurl(), and wait_for_answer().
03273 { 03274 if (chan->tech->send_html) 03275 return chan->tech->send_html(chan, subclass, data, datalen); 03276 return -1; 03277 }
int ast_channel_sendurl | ( | struct ast_channel * | channel, | |
const char * | url | |||
) |
Send URL on link. Returns 0 on success or -1 on failure
Definition at line 3279 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec(), and try_calling().
03280 { 03281 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03282 }
int ast_channel_setoption | ( | struct ast_channel * | channel, | |
int | option, | |||
void * | data, | |||
int | datalen, | |||
int | block | |||
) |
Sets an option on a channel.
channel | channel to set options on | |
option | option to change | |
data | data specific to option | |
datalen | length of the data | |
block | blocking or not Set an option on a channel (see frame.h), optionally blocking awaiting the reply Returns 0 on success and -1 on failure |
Definition at line 4316 of file channel.c.
References ast_log(), errno, LOG_ERROR, ast_channel_tech::setoption, and ast_channel::tech.
Referenced by ast_bridge_call(), common_exec(), conf_run(), dahdi_hangup(), func_channel_write(), handle_tddmode(), play_record_review(), reset_volumes(), rpt(), set_listen_volume(), set_talk_volume(), try_calling(), and vm_forwardoptions().
04317 { 04318 int res; 04319 04320 if (chan->tech->setoption) { 04321 res = chan->tech->setoption(chan, option, data, datalen); 04322 if (res < 0) 04323 return res; 04324 } else { 04325 errno = ENOSYS; 04326 return -1; 04327 } 04328 if (block) { 04329 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04330 intermediate packets. XXX */ 04331 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04332 return -1; 04333 } 04334 return 0; 04335 }
void ast_channel_setwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Set when to hang a channel up.
chan | channel on which to check for hang up | |
offset | offset in seconds from current time of when to hang up This function sets the absolute time out on a channel (when to hang up). |
Definition at line 467 of file channel.c.
References ast_null_frame, ast_queue_frame(), and ast_channel::whentohangup.
Referenced by action_timeout(), and timeout_write().
00468 { 00469 chan->whentohangup = offset ? time(NULL) + offset : 0; 00470 ast_queue_frame(chan, &ast_null_frame); 00471 return; 00472 }
struct ast_silence_generator* ast_channel_start_silence_generator | ( | struct ast_channel * | chan | ) |
Starts a silence generator on the given channel.
chan | The channel to generate silence on |
The pointer returned by this function must be preserved and passed to ast_channel_stop_silence_generator when you wish to stop the silence generation.
Definition at line 4644 of file channel.c.
References ast_activate_generator(), ast_calloc, AST_FORMAT_SLINEAR, ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_channel::name, ast_silence_generator::old_write_format, option_debug, silence_generator, and ast_channel::writeformat.
Referenced by __ast_play_and_record(), ast_dtmf_stream(), and channel_spy().
04645 { 04646 struct ast_silence_generator *state; 04647 04648 if (!(state = ast_calloc(1, sizeof(*state)))) { 04649 return NULL; 04650 } 04651 04652 state->old_write_format = chan->writeformat; 04653 04654 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 04655 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 04656 free(state); 04657 return NULL; 04658 } 04659 04660 ast_activate_generator(chan, &silence_generator, state); 04661 04662 if (option_debug) 04663 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 04664 04665 return state; 04666 }
void ast_channel_stop_silence_generator | ( | struct ast_channel * | chan, | |
struct ast_silence_generator * | state | |||
) |
Stops a previously-started silence generator on the given channel.
chan | The channel to operate on | |
state | The ast_silence_generator pointer return by a previous call to ast_channel_start_silence_generator. |
Definition at line 4668 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_channel::name, ast_silence_generator::old_write_format, and option_debug.
Referenced by __ast_play_and_record(), ast_dtmf_stream(), and channel_spy().
04669 { 04670 if (!state) 04671 return; 04672 04673 ast_deactivate_generator(chan); 04674 04675 if (option_debug) 04676 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 04677 04678 if (ast_set_write_format(chan, state->old_write_format) < 0) 04679 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 04680 04681 free(state); 04682 }
int ast_channel_supports_html | ( | struct ast_channel * | channel | ) |
Returns 0 if channel does not support HTML or non-zero if it does
Definition at line 3267 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by sendurl_exec(), and try_calling().
void ast_channel_undefer_dtmf | ( | struct ast_channel * | chan | ) |
Unset defer DTMF flag on channel.
Undo defer. ast_read will return any dtmf characters that were queued
Definition at line 1019 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
01020 { 01021 if (chan) 01022 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 01023 }
void ast_channel_unregister | ( | const struct ast_channel_tech * | tech | ) |
Unregister a channel technology.
tech | Structure defining channel technology or "type" that was previously registered |
Definition at line 529 of file channel.c.
References AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, ast_log(), ast_verbose(), free, chanlist::list, LOG_DEBUG, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by __unload_module(), and unload_module().
00530 { 00531 struct chanlist *chan; 00532 00533 if (option_debug) 00534 ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type); 00535 00536 AST_LIST_LOCK(&channels); 00537 00538 AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) { 00539 if (chan->tech == tech) { 00540 AST_LIST_REMOVE_CURRENT(&backends, list); 00541 free(chan); 00542 if (option_verbose > 1) 00543 ast_verbose(VERBOSE_PREFIX_2 "Unregistered channel type '%s'\n", tech->type); 00544 break; 00545 } 00546 } 00547 AST_LIST_TRAVERSE_SAFE_END 00548 00549 AST_LIST_UNLOCK(&channels); 00550 }
struct ast_channel* ast_channel_walk_locked | ( | const struct ast_channel * | prev | ) |
Browse channels in use Browse the channels currently in use.
prev | where you want to start in the channel list |
Definition at line 1135 of file channel.c.
References channel_find_locked().
Referenced by action_status(), ast_complete_channels(), ast_pickup_call(), complete_ch_helper(), conf_exec(), handle_chanlist(), handle_chanlist_deprecated(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_nodebugchan_deprecated(), next_channel(), pickup_by_exten(), pickup_by_mark(), and softhangup_exec().
01136 { 01137 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01138 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4568 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04569 { 04570 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04571 }
struct ast_variable* ast_channeltype_list | ( | void | ) |
return an ast_variable list of channeltypes
Definition at line 163 of file channel.c.
References AST_LIST_TRAVERSE, ast_variable_new(), ast_channel_tech::description, chanlist::list, chanlist::tech, ast_channel_tech::type, and var.
00164 { 00165 struct chanlist *cl; 00166 struct ast_variable *var=NULL, *prev = NULL; 00167 AST_LIST_TRAVERSE(&backends, cl, list) { 00168 if (prev) { 00169 if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description))) 00170 prev = prev->next; 00171 } else { 00172 var = ast_variable_new(cl->tech->type, cl->tech->description); 00173 prev = var; 00174 } 00175 } 00176 return var; 00177 }
int ast_check_hangup | ( | struct ast_channel * | chan | ) |
Check to see if a channel is needing hang up.
chan | channel on which to check for hang up This function determines if the channel is being requested to be hung up. |
Definition at line 385 of file channel.c.
References ast_channel::_softhangup, AST_SOFTHANGUP_TIMEOUT, ast_channel::tech_pvt, and ast_channel::whentohangup.
Referenced by __ast_read(), action_redirect(), agent_indicate(), agi_handle_command(), announce_thread(), app_exec(), ast_answer(), ast_bridge_call(), ast_call(), ast_channel_bridge(), ast_check_hangup_locked(), ast_feature_request_and_dial(), ast_indicate_data(), ast_readstring_full(), ast_recvtext(), ast_rtp_bridge(), ast_sendtext(), ast_transfer(), ast_udptl_bridge(), ast_waitfordigit_full(), ast_write(), bridge_native_loop(), channel_spy(), common_exec(), conf_run(), dahdi_sendtext(), dahdi_setoption(), deadagi_exec(), do_atxfer(), handle_request_invite(), handle_sendimage(), pbx_exec(), rpt(), and wait_for_answer().
00386 { 00387 if (chan->_softhangup) /* yes if soft hangup flag set */ 00388 return 1; 00389 if (!chan->tech_pvt) /* yes if no technology private data */ 00390 return 1; 00391 if (!chan->whentohangup) /* no if no hangup scheduled */ 00392 return 0; 00393 if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */ 00394 return 0; 00395 chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */ 00396 return 1; 00397 }
static int ast_check_hangup_locked | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 399 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_check_hangup().
Referenced by ast_channel_bridge().
00400 { 00401 int res; 00402 ast_channel_lock(chan); 00403 res = ast_check_hangup(chan); 00404 ast_channel_unlock(chan); 00405 return res; 00406 }
void ast_deactivate_generator | ( | struct ast_channel * | chan | ) |
Deactive an active generator
Definition at line 1586 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_clear_flag, AST_FLAG_WRITE_INT, AST_GENERATOR_FD, ast_settimeout(), ast_channel::fds, ast_channel::generator, ast_channel::generatordata, and ast_generator::release.
Referenced by __ast_read(), app_exec(), ast_channel_stop_silence_generator(), ast_openstream_full(), ast_playtones_stop(), ast_quiet_chan(), ast_read_generator_actions(), ast_tonepair_stop(), ast_write(), cb_events(), channel_spy(), generator_force(), local_ast_moh_stop(), old_milliwatt_exec(), and wait_for_answer().
01587 { 01588 ast_channel_lock(chan); 01589 if (chan->generatordata) { 01590 if (chan->generator && chan->generator->release) 01591 chan->generator->release(chan, chan->generatordata); 01592 chan->generatordata = NULL; 01593 chan->generator = NULL; 01594 chan->fds[AST_GENERATOR_FD] = -1; 01595 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01596 ast_settimeout(chan, 0, NULL, NULL); 01597 } 01598 ast_channel_unlock(chan); 01599 }
int ast_do_masquerade | ( | struct ast_channel * | original | ) |
Start masquerading a channel XXX This is a seriously wacked out operation. We're essentially putting the guts of the clone channel into the original channel. Start by killing off the original channel's backend. I'm not sure we're going to keep this function, because while the features are nice, the cost is very high in terms of pure nastiness. XXX.
Definition at line 3505 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::adsicpe, ast_channel::alertpipe, ast_app_group_update(), ast_cause2str(), ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_copy_string(), AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, AST_GENERATOR_FD, ast_indicate(), AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_HEAD_NOLOCK, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_INSERT_TAIL, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_log(), AST_MAX_FDS, ast_null_frame, ast_queue_frame(), ast_set_flag, ast_set_read_format(), ast_set_write_format(), AST_SOFTHANGUP_DEV, ast_string_field_set, ast_test_flag, AST_TIMING_FD, ast_channel::blocker, ast_channel::cdr, ast_datastore_info::chan_fixup, ast_channel::cid, clone_variables(), ast_datastore::data, ast_channel::datastores, ast_datastore::entry, errno, ast_channel::fdno, ast_channel::fds, ast_channel_tech::fixup, free_translation(), ast_channel_tech::hangup, ast_datastore::info, language, ast_channel::language, ast_channel::lock, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::monitor, musicclass, ast_channel::name, name, ast_channel::nativeformats, option_debug, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readformat, ast_channel::readq, t, ast_channel::tech, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel_tech::type, ast_channel::uniqueid, ast_channel::visible_indication, and ast_channel::writeformat.
Referenced by __ast_read(), ast_async_goto(), ast_hangup(), ast_waitfor_nandfds(), ast_write(), iax_park(), sip_park(), and sip_park_thread().
03506 { 03507 int x,i; 03508 int res=0; 03509 int origstate; 03510 struct ast_frame *cur; 03511 const struct ast_channel_tech *t; 03512 void *t_pvt; 03513 struct ast_callerid tmpcid; 03514 struct ast_channel *clone = original->masq; 03515 struct ast_cdr *cdr; 03516 int rformat = original->readformat; 03517 int wformat = original->writeformat; 03518 char newn[100]; 03519 char orig[100]; 03520 char masqn[100]; 03521 char zombn[100]; 03522 03523 if (option_debug > 3) 03524 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03525 clone->name, clone->_state, original->name, original->_state); 03526 03527 /* XXX This is a seriously wacked out operation. We're essentially putting the guts of 03528 the clone channel into the original channel. Start by killing off the original 03529 channel's backend. I'm not sure we're going to keep this function, because 03530 while the features are nice, the cost is very high in terms of pure nastiness. XXX */ 03531 03532 /* We need the clone's lock, too */ 03533 ast_channel_lock(clone); 03534 03535 if (option_debug > 1) 03536 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03537 03538 /* Having remembered the original read/write formats, we turn off any translation on either 03539 one */ 03540 free_translation(clone); 03541 free_translation(original); 03542 03543 03544 /* Unlink the masquerade */ 03545 original->masq = NULL; 03546 clone->masqr = NULL; 03547 03548 /* Save the original name */ 03549 ast_copy_string(orig, original->name, sizeof(orig)); 03550 /* Save the new name */ 03551 ast_copy_string(newn, clone->name, sizeof(newn)); 03552 /* Create the masq name */ 03553 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03554 03555 /* Copy the name from the clone channel */ 03556 ast_string_field_set(original, name, newn); 03557 03558 /* Mangle the name of the clone channel */ 03559 ast_string_field_set(clone, name, masqn); 03560 03561 /* Notify any managers of the change, first the masq then the other */ 03562 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 03563 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03564 03565 /* Swap the technologies */ 03566 t = original->tech; 03567 original->tech = clone->tech; 03568 clone->tech = t; 03569 03570 /* Swap the cdrs */ 03571 cdr = original->cdr; 03572 original->cdr = clone->cdr; 03573 clone->cdr = cdr; 03574 03575 t_pvt = original->tech_pvt; 03576 original->tech_pvt = clone->tech_pvt; 03577 clone->tech_pvt = t_pvt; 03578 03579 /* Swap the alertpipes */ 03580 for (i = 0; i < 2; i++) { 03581 x = original->alertpipe[i]; 03582 original->alertpipe[i] = clone->alertpipe[i]; 03583 clone->alertpipe[i] = x; 03584 } 03585 03586 /* 03587 * Swap the readq's. The end result should be this: 03588 * 03589 * 1) All frames should be on the new (original) channel. 03590 * 2) Any frames that were already on the new channel before this 03591 * masquerade need to be at the end of the readq, after all of the 03592 * frames on the old (clone) channel. 03593 * 3) The alertpipe needs to get poked for every frame that was already 03594 * on the new channel, since we are now using the alert pipe from the 03595 * old (clone) channel. 03596 */ 03597 { 03598 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 03599 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 03600 03601 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 03602 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 03603 03604 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 03605 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 03606 if (original->alertpipe[1] > -1) { 03607 int poke = 0; 03608 03609 if (write(original->alertpipe[1], &poke, sizeof(poke)) < 0) { 03610 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 03611 } 03612 } 03613 } 03614 } 03615 03616 /* Swap the raw formats */ 03617 x = original->rawreadformat; 03618 original->rawreadformat = clone->rawreadformat; 03619 clone->rawreadformat = x; 03620 x = original->rawwriteformat; 03621 original->rawwriteformat = clone->rawwriteformat; 03622 clone->rawwriteformat = x; 03623 03624 clone->_softhangup = AST_SOFTHANGUP_DEV; 03625 03626 /* And of course, so does our current state. Note we need not 03627 call ast_setstate since the event manager doesn't really consider 03628 these separate. We do this early so that the clone has the proper 03629 state of the original channel. */ 03630 origstate = original->_state; 03631 original->_state = clone->_state; 03632 clone->_state = origstate; 03633 03634 if (clone->tech->fixup){ 03635 res = clone->tech->fixup(original, clone); 03636 if (res) 03637 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03638 } 03639 03640 /* Start by disconnecting the original's physical side */ 03641 if (clone->tech->hangup) 03642 res = clone->tech->hangup(clone); 03643 if (res) { 03644 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03645 ast_channel_unlock(clone); 03646 return -1; 03647 } 03648 03649 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03650 /* Mangle the name of the clone channel */ 03651 ast_string_field_set(clone, name, zombn); 03652 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03653 03654 /* Update the type. */ 03655 t_pvt = original->monitor; 03656 original->monitor = clone->monitor; 03657 clone->monitor = t_pvt; 03658 03659 /* Keep the same language. */ 03660 ast_string_field_set(original, language, clone->language); 03661 /* Copy the FD's other than the generator fd */ 03662 for (x = 0; x < AST_MAX_FDS; x++) { 03663 if (x != AST_GENERATOR_FD) 03664 original->fds[x] = clone->fds[x]; 03665 } 03666 03667 ast_app_group_update(clone, original); 03668 /* Move data stores over */ 03669 if (AST_LIST_FIRST(&clone->datastores)) { 03670 struct ast_datastore *ds; 03671 AST_LIST_TRAVERSE(&clone->datastores, ds, entry) { 03672 if (ds->info->chan_fixup) 03673 ds->info->chan_fixup(ds->data, clone, original); 03674 } 03675 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 03676 } 03677 03678 clone_variables(original, clone); 03679 /* Presense of ADSI capable CPE follows clone */ 03680 original->adsicpe = clone->adsicpe; 03681 /* Bridge remains the same */ 03682 /* CDR fields remain the same */ 03683 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 03684 /* Application and data remain the same */ 03685 /* Clone exception becomes real one, as with fdno */ 03686 ast_set_flag(original, ast_test_flag(clone, AST_FLAG_OUTGOING | AST_FLAG_EXCEPTION)); 03687 original->fdno = clone->fdno; 03688 /* Schedule context remains the same */ 03689 /* Stream stuff stays the same */ 03690 /* Keep the original state. The fixup code will need to work with it most likely */ 03691 03692 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 03693 out. */ 03694 tmpcid = original->cid; 03695 original->cid = clone->cid; 03696 clone->cid = tmpcid; 03697 03698 /* Restore original timing file descriptor */ 03699 original->fds[AST_TIMING_FD] = original->timingfd; 03700 03701 /* Our native formats are different now */ 03702 original->nativeformats = clone->nativeformats; 03703 03704 /* Context, extension, priority, app data, jump table, remain the same */ 03705 /* pvt switches. pbx stays the same, as does next */ 03706 03707 /* Set the write format */ 03708 ast_set_write_format(original, wformat); 03709 03710 /* Set the read format */ 03711 ast_set_read_format(original, rformat); 03712 03713 /* Copy the music class */ 03714 ast_string_field_set(original, musicclass, clone->musicclass); 03715 03716 if (option_debug) 03717 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 03718 03719 /* Okay. Last thing is to let the channel driver know about all this mess, so he 03720 can fix up everything as best as possible */ 03721 if (original->tech->fixup) { 03722 res = original->tech->fixup(clone, original); 03723 if (res) { 03724 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 03725 original->tech->type, original->name); 03726 ast_channel_unlock(clone); 03727 return -1; 03728 } 03729 } else 03730 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 03731 original->tech->type, original->name); 03732 03733 /* 03734 * If an indication is currently playing, maintain it on the channel 03735 * that is taking the place of original 03736 * 03737 * This is needed because the masquerade is swapping out in the internals 03738 * of this channel, and the new channel private data needs to be made 03739 * aware of the current visible indication (RINGING, CONGESTION, etc.) 03740 */ 03741 if (original->visible_indication) { 03742 ast_indicate(original, original->visible_indication); 03743 } 03744 03745 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 03746 a zombie so nothing tries to touch it. If it's already been marked as a 03747 zombie, then free it now (since it already is considered invalid). */ 03748 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 03749 if (option_debug) 03750 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 03751 ast_channel_unlock(clone); 03752 manager_event(EVENT_FLAG_CALL, "Hangup", 03753 "Channel: %s\r\n" 03754 "Uniqueid: %s\r\n" 03755 "Cause: %d\r\n" 03756 "Cause-txt: %s\r\n", 03757 clone->name, 03758 clone->uniqueid, 03759 clone->hangupcause, 03760 ast_cause2str(clone->hangupcause) 03761 ); 03762 ast_channel_free(clone); 03763 } else { 03764 if (option_debug) 03765 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 03766 ast_set_flag(clone, AST_FLAG_ZOMBIE); 03767 ast_queue_frame(clone, &ast_null_frame); 03768 ast_channel_unlock(clone); 03769 } 03770 03771 /* Signal any blocker */ 03772 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 03773 pthread_kill(original->blocker, SIGURG); 03774 if (option_debug) 03775 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 03776 return 0; 03777 }
static enum ast_bridge_result ast_generic_bridge | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1, | |||
struct ast_bridge_config * | config, | |||
struct ast_frame ** | fo, | |||
struct ast_channel ** | rc, | |||
struct timeval | bridge_end | |||
) | [static] |
Definition at line 3890 of file channel.c.
References AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_RETRY, ast_jb_do_usecheck(), ast_jb_empty_and_reset(), ast_tvdiff_ms(), ast_tvnow(), config, f, ast_channel::nativeformats, and ast_channel::tech_pvt.
Referenced by ast_channel_bridge().
03893 { 03894 /* Copy voice back and forth between the two channels. */ 03895 struct ast_channel *cs[3]; 03896 struct ast_frame *f; 03897 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03898 int o0nativeformats; 03899 int o1nativeformats; 03900 int watch_c0_dtmf; 03901 int watch_c1_dtmf; 03902 void *pvt0, *pvt1; 03903 /* Indicates whether a frame was queued into a jitterbuffer */ 03904 int frame_put_in_jb = 0; 03905 int jb_in_use; 03906 int to; 03907 03908 cs[0] = c0; 03909 cs[1] = c1; 03910 pvt0 = c0->tech_pvt; 03911 pvt1 = c1->tech_pvt; 03912 o0nativeformats = c0->nativeformats; 03913 o1nativeformats = c1->nativeformats; 03914 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 03915 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 03916 03917 /* Check the need of a jitterbuffer for each channel */ 03918 jb_in_use = ast_jb_do_usecheck(c0, c1); 03919 if (jb_in_use) 03920 ast_jb_empty_and_reset(c0, c1); 03921 03922 for (;;) { 03923 struct ast_channel *who, *other; 03924 03925 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 03926 (o0nativeformats != c0->nativeformats) || 03927 (o1nativeformats != c1->nativeformats)) { 03928 /* Check for Masquerade, codec changes, etc */ 03929 res = AST_BRIDGE_RETRY; 03930 break; 03931 } 03932 if (bridge_end.tv_sec) { 03933 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 03934 if (to <= 0) { 03935 if (config->timelimit) 03936 res = AST_BRIDGE_RETRY; 03937 else 03938 res = AST_BRIDGE_COMPLETE; 03939 break; 03940 } 03941 } else 03942 to = -1; 03943 /* Calculate the appropriate max sleep interval - in general, this is the time, 03944 left to the closest jb delivery moment */ 03945 if (jb_in_use) 03946 to = ast_jb_get_when_to_wakeup(c0, c1, to); 03947 who = ast_waitfor_n(cs, 2, &to); 03948 if (!who) { 03949 /* No frame received within the specified timeout - check if we have to deliver now */ 03950 if (jb_in_use) 03951 ast_jb_get_and_deliver(c0, c1); 03952 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 03953 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03954 c0->_softhangup = 0; 03955 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03956 c1->_softhangup = 0; 03957 c0->_bridge = c1; 03958 c1->_bridge = c0; 03959 } 03960 continue; 03961 } 03962 f = ast_read(who); 03963 if (!f) { 03964 *fo = NULL; 03965 *rc = who; 03966 if (option_debug) 03967 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 03968 break; 03969 } 03970 03971 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 03972 /* Try add the frame info the who's bridged channel jitterbuff */ 03973 if (jb_in_use) 03974 frame_put_in_jb = !ast_jb_put(other, f); 03975 03976 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 03977 int bridge_exit = 0; 03978 03979 switch (f->subclass) { 03980 case AST_CONTROL_HOLD: 03981 case AST_CONTROL_UNHOLD: 03982 case AST_CONTROL_VIDUPDATE: 03983 case AST_CONTROL_SRCUPDATE: 03984 ast_indicate_data(other, f->subclass, f->data, f->datalen); 03985 if (jb_in_use) { 03986 ast_jb_empty_and_reset(c0, c1); 03987 } 03988 break; 03989 default: 03990 *fo = f; 03991 *rc = who; 03992 bridge_exit = 1; 03993 if (option_debug) 03994 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 03995 break; 03996 } 03997 if (bridge_exit) 03998 break; 03999 } 04000 if ((f->frametype == AST_FRAME_VOICE) || 04001 (f->frametype == AST_FRAME_DTMF_BEGIN) || 04002 (f->frametype == AST_FRAME_DTMF) || 04003 (f->frametype == AST_FRAME_VIDEO) || 04004 (f->frametype == AST_FRAME_IMAGE) || 04005 (f->frametype == AST_FRAME_HTML) || 04006 (f->frametype == AST_FRAME_MODEM) || 04007 (f->frametype == AST_FRAME_TEXT)) { 04008 /* monitored dtmf causes exit from bridge */ 04009 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 04010 04011 if (monitored_source && 04012 (f->frametype == AST_FRAME_DTMF_END || 04013 f->frametype == AST_FRAME_DTMF_BEGIN)) { 04014 *fo = f; 04015 *rc = who; 04016 if (option_debug) 04017 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 04018 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 04019 who->name); 04020 break; 04021 } 04022 /* Write immediately frames, not passed through jb */ 04023 if (!frame_put_in_jb) 04024 ast_write(other, f); 04025 04026 /* Check if we have to deliver now */ 04027 if (jb_in_use) 04028 ast_jb_get_and_deliver(c0, c1); 04029 } 04030 /* XXX do we want to pass on also frames not matched above ? */ 04031 ast_frfree(f); 04032 04033 /* Swap who gets priority */ 04034 cs[2] = cs[0]; 04035 cs[0] = cs[1]; 04036 cs[1] = cs[2]; 04037 } 04038 return res; 04039 }
struct ast_channel* ast_get_channel_by_exten_locked | ( | const char * | exten, | |
const char * | context | |||
) |
Get channel by exten (and optionally context) and lock it.
Definition at line 1160 of file channel.c.
References channel_find_locked().
01161 { 01162 return channel_find_locked(NULL, NULL, 0, context, exten); 01163 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1141 of file channel.c.
References channel_find_locked().
Referenced by action_atxfer(), action_getvar(), action_hangup(), action_redirect(), action_setcdruserfield(), action_setvar(), action_status(), action_timeout(), ast_async_goto_by_name(), ast_bridge_call(), asyncgoto_exec(), change_monitor_action(), do_pause_or_unpause(), get_zap_channel_locked(), handle_channelstatus(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_getvariablefull(), handle_hangup(), handle_nodebugchan_deprecated(), handle_showchan(), handle_showchan_deprecated(), handle_softhangup(), manager_park(), manager_play_dtmf(), park_call_full(), pbx_builtin_importvar(), start_monitor_action(), and stop_monitor_action().
01142 { 01143 return channel_find_locked(NULL, name, 0, NULL, NULL); 01144 }
struct ast_channel* ast_get_channel_by_name_prefix_locked | ( | const char * | name, | |
const int | namelen | |||
) |
Get channel by name prefix (locks channel).
Definition at line 1147 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01148 { 01149 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01150 }
struct ast_channel_tech* ast_get_channel_tech | ( | const char * | name | ) |
Get a channel technology structure by name.
name | name of technology to find |
Definition at line 552 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), chanlist::list, LOG_WARNING, chanlist::tech, and ast_channel_tech::type.
Referenced by ast_device_state().
00553 { 00554 struct chanlist *chanls; 00555 const struct ast_channel_tech *ret = NULL; 00556 00557 if (AST_LIST_LOCK(&channels)) { 00558 ast_log(LOG_WARNING, "Unable to lock channel tech list\n"); 00559 return NULL; 00560 } 00561 00562 AST_LIST_TRAVERSE(&backends, chanls, list) { 00563 if (!strcasecmp(name, chanls->tech->type)) { 00564 ret = chanls->tech; 00565 break; 00566 } 00567 } 00568 00569 AST_LIST_UNLOCK(&channels); 00570 00571 return ret; 00572 }
ast_group_t ast_get_group | ( | const char * | s | ) |
Definition at line 4489 of file channel.c.
References ast_log(), ast_strdupa, ast_strlen_zero(), group, and LOG_ERROR.
Referenced by _parse(), build_device(), build_gateway(), build_peer(), build_user(), func_channel_write(), process_dahdi(), and read_agent_config().
04490 { 04491 char *piece; 04492 char *c; 04493 int start=0, finish=0, x; 04494 ast_group_t group = 0; 04495 04496 if (ast_strlen_zero(s)) 04497 return 0; 04498 04499 c = ast_strdupa(s); 04500 04501 while ((piece = strsep(&c, ","))) { 04502 if (sscanf(piece, "%d-%d", &start, &finish) == 2) { 04503 /* Range */ 04504 } else if (sscanf(piece, "%d", &start)) { 04505 /* Just one */ 04506 finish = start; 04507 } else { 04508 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04509 continue; 04510 } 04511 for (x = start; x <= finish; x++) { 04512 if ((x > 63) || (x < 0)) { 04513 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04514 } else 04515 group |= ((ast_group_t) 1 << x); 04516 } 04517 } 04518 return group; 04519 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1459 of file channel.c.
References ast_assert, ast_audiohook_detach_list(), ast_autoservice_stop(), ast_cause2str(), ast_cdr_detach(), ast_cdr_end(), AST_CDR_FLAG_BRIDGED, AST_CDR_FLAG_DIALED, AST_CDR_FLAG_POST_DISABLED, AST_CDR_NULL, ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_closestream(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_ZOMBIE, ast_log(), ast_set_flag, ast_test_flag, ast_channel::audiohooks, ast_channel::blocker, ast_channel::blockproc, ast_channel::cdr, ast_cdr::disposition, free_translation(), ast_channel::generator, ast_channel::generatordata, ast_channel_tech::hangup, ast_channel::hangupcause, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::name, option_debug, ast_generator::release, ast_channel::sched, sched_context_destroy(), ast_channel::stream, ast_channel::tech, ast_channel::uniqueid, and ast_channel::vstream.
Referenced by __ast_request_and_dial(), __oh323_new(), agent_hangup(), agent_read(), alsa_new(), answer_exec_run(), app_exec(), ast_async_goto(), ast_bridge_call_thread(), ast_dial_destroy(), ast_dial_hangup(), ast_feature_request_and_dial(), ast_iax2_new(), ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_pbx_run_app(), async_wait(), begin_dial(), build_conf(), chanavail_exec(), check_compat(), check_goto_on_transfer(), clear_caller(), conf_run(), connect_link(), dahdi_handle_event(), dahdi_new(), do_atxfer(), do_hang(), do_idle_thread(), do_parking_thread(), features_hangup(), findmeexec(), gtalk_new(), handle_enbloc_call_message(), handle_frame(), handle_frame_ownerless(), handle_hd_hf(), handle_init_event(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_soft_key_event_message(), handle_stimulus_message(), hangup_chan(), hangupcalls(), hanguptree(), iax2_request(), iax_park(), iax_park_thread(), local_attended_transfer(), local_hangup(), masq_park_call(), mgcp_new(), mgcp_ss(), monitor_dial(), nbs_new(), oss_new(), park_exec(), parkandannounce_exec(), phone_new(), rpt(), rpt_call(), rpt_tele_thread(), sip_new(), sip_park(), sip_park_thread(), skinny_new(), skinny_ss(), ss_thread(), try_calling(), wait_for_answer(), and wait_for_winner().
01460 { 01461 int res = 0; 01462 01463 /* Don't actually hang up a channel that will masquerade as someone else, or 01464 if someone is going to masquerade as us */ 01465 ast_channel_lock(chan); 01466 01467 if (chan->audiohooks) { 01468 ast_audiohook_detach_list(chan->audiohooks); 01469 chan->audiohooks = NULL; 01470 } 01471 01472 ast_autoservice_stop(chan); 01473 01474 if (chan->masq) { 01475 if (ast_do_masquerade(chan)) 01476 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01477 } 01478 01479 if (chan->masq) { 01480 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01481 ast_channel_unlock(chan); 01482 return 0; 01483 } 01484 /* If this channel is one which will be masqueraded into something, 01485 mark it as a zombie already, so we know to free it later */ 01486 if (chan->masqr) { 01487 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01488 ast_channel_unlock(chan); 01489 return 0; 01490 } 01491 free_translation(chan); 01492 /* Close audio stream */ 01493 if (chan->stream) { 01494 ast_closestream(chan->stream); 01495 chan->stream = NULL; 01496 } 01497 /* Close video stream */ 01498 if (chan->vstream) { 01499 ast_closestream(chan->vstream); 01500 chan->vstream = NULL; 01501 } 01502 if (chan->sched) { 01503 sched_context_destroy(chan->sched); 01504 chan->sched = NULL; 01505 } 01506 01507 if (chan->generatordata) /* Clear any tone stuff remaining */ 01508 chan->generator->release(chan, chan->generatordata); 01509 chan->generatordata = NULL; 01510 chan->generator = NULL; 01511 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01512 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01513 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01514 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01515 ast_assert(ast_test_flag(chan, AST_FLAG_BLOCKING) == 0); 01516 } 01517 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01518 if (option_debug) 01519 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01520 if (chan->tech->hangup) 01521 res = chan->tech->hangup(chan); 01522 } else { 01523 if (option_debug) 01524 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01525 } 01526 01527 ast_channel_unlock(chan); 01528 manager_event(EVENT_FLAG_CALL, "Hangup", 01529 "Channel: %s\r\n" 01530 "Uniqueid: %s\r\n" 01531 "Cause: %d\r\n" 01532 "Cause-txt: %s\r\n", 01533 chan->name, 01534 chan->uniqueid, 01535 chan->hangupcause, 01536 ast_cause2str(chan->hangupcause) 01537 ); 01538 01539 if (chan->cdr && !ast_test_flag(chan->cdr, AST_CDR_FLAG_BRIDGED) && 01540 !ast_test_flag(chan->cdr, AST_CDR_FLAG_POST_DISABLED) && 01541 (chan->cdr->disposition != AST_CDR_NULL || ast_test_flag(chan->cdr, AST_CDR_FLAG_DIALED))) { 01542 01543 ast_cdr_end(chan->cdr); 01544 ast_cdr_detach(chan->cdr); 01545 chan->cdr = NULL; 01546 } 01547 01548 ast_channel_free(chan); 01549 01550 return res; 01551 }
int ast_indicate | ( | struct ast_channel * | chan, | |
int | condition | |||
) |
Indicates condition of channel.
chan | channel to change the indication | |
condition | which condition to indicate on the channel |
Definition at line 2442 of file channel.c.
References ast_indicate_data().
Referenced by __ast_play_and_record(), agent_new(), answer_trunk_chan(), ast_answer(), ast_bridge_call(), ast_channel_bridge(), ast_do_masquerade(), ast_dtmf_stream(), ast_feature_request_and_dial(), attempt_transfer(), builtin_blindtransfer(), conf_run(), disa_exec(), do_atxfer(), do_parking_thread(), features_indicate(), finishup(), function_remote(), handle_frame(), handle_recordfile(), mgcp_ss(), monitor_dial(), park_exec(), pbx_builtin_busy(), pbx_builtin_congestion(), pbx_builtin_progress(), pbx_builtin_ringing(), pbx_builtin_waitexten(), queue_exec(), rpt(), send_waveform_to_channel(), skinny_ss(), sla_handle_hold_event(), sla_station_exec(), sla_trunk_exec(), and wait_for_answer().
02443 { 02444 return ast_indicate_data(chan, condition, NULL, 0); 02445 }
int ast_indicate_data | ( | struct ast_channel * | chan, | |
int | condition, | |||
const void * | data, | |||
size_t | datalen | |||
) |
Indicates condition of channel, with payload.
chan | channel to change the indication | |
condition | which condition to indicate on the channel | |
data | pointer to payload data | |
datalen | size of payload data |
Definition at line 2480 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_CONTROL_WINK, AST_FLAG_ZOMBIE, ast_get_indication_tone(), ast_log(), ast_playtones_start(), ast_playtones_stop(), ast_test_flag, tone_zone_sound::data, ast_channel_tech::indicate, is_visible_indication(), LOG_DEBUG, ast_channel::name, option_debug, ast_channel::tech, ast_channel::visible_indication, and ast_channel::zone.
Referenced by __login_exec(), agent_hangup(), ast_bridge_call(), ast_indicate(), bridge_native_loop(), do_parking_thread(), park_call_full(), pbx_builtin_waitexten(), and wait_for_answer().
02482 { 02483 /* By using an enum, we'll get compiler warnings for values not handled 02484 * in switch statements. */ 02485 enum ast_control_frame_type condition = _condition; 02486 const struct tone_zone_sound *ts = NULL; 02487 int res = -1; 02488 02489 ast_channel_lock(chan); 02490 02491 /* Don't bother if the channel is about to go away, anyway. */ 02492 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02493 ast_channel_unlock(chan); 02494 return -1; 02495 } 02496 02497 if (chan->tech->indicate) { 02498 /* See if the channel driver can handle this condition. */ 02499 res = chan->tech->indicate(chan, condition, data, datalen); 02500 } 02501 02502 ast_channel_unlock(chan); 02503 02504 if (chan->tech->indicate && !res) { 02505 /* The channel driver successfully handled this indication */ 02506 if (is_visible_indication(condition)) { 02507 chan->visible_indication = condition; 02508 } 02509 return 0; 02510 } 02511 02512 /* The channel driver does not support this indication, let's fake 02513 * it by doing our own tone generation if applicable. */ 02514 02515 /*!\note If we compare the enumeration type, which does not have any 02516 * negative constants, the compiler may optimize this code away. 02517 * Therefore, we must perform an integer comparison here. */ 02518 if (_condition < 0) { 02519 /* Stop any tones that are playing */ 02520 ast_playtones_stop(chan); 02521 return 0; 02522 } 02523 02524 /* Handle conditions that we have tones for. */ 02525 switch (condition) { 02526 case AST_CONTROL_RINGING: 02527 ts = ast_get_indication_tone(chan->zone, "ring"); 02528 break; 02529 case AST_CONTROL_BUSY: 02530 ts = ast_get_indication_tone(chan->zone, "busy"); 02531 break; 02532 case AST_CONTROL_CONGESTION: 02533 ts = ast_get_indication_tone(chan->zone, "congestion"); 02534 break; 02535 case AST_CONTROL_PROGRESS: 02536 case AST_CONTROL_PROCEEDING: 02537 case AST_CONTROL_VIDUPDATE: 02538 case AST_CONTROL_SRCUPDATE: 02539 case AST_CONTROL_RADIO_KEY: 02540 case AST_CONTROL_RADIO_UNKEY: 02541 case AST_CONTROL_OPTION: 02542 case AST_CONTROL_WINK: 02543 case AST_CONTROL_FLASH: 02544 case AST_CONTROL_OFFHOOK: 02545 case AST_CONTROL_TAKEOFFHOOK: 02546 case AST_CONTROL_ANSWER: 02547 case AST_CONTROL_HANGUP: 02548 case AST_CONTROL_RING: 02549 case AST_CONTROL_HOLD: 02550 case AST_CONTROL_UNHOLD: 02551 /* Nothing left to do for these. */ 02552 res = 0; 02553 break; 02554 } 02555 02556 if (ts && ts->data[0]) { 02557 /* We have a tone to play, yay. */ 02558 if (option_debug) { 02559 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02560 } 02561 ast_playtones_start(chan, 0, ts->data, 1); 02562 res = 0; 02563 chan->visible_indication = condition; 02564 } 02565 02566 if (res) { 02567 /* not handled */ 02568 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02569 } 02570 02571 return res; 02572 }
void ast_install_music_functions | ( | int(*)(struct ast_channel *, const char *, const char *) | start_ptr, | |
void(*)(struct ast_channel *) | stop_ptr, | |||
void(*)(struct ast_channel *) | cleanup_ptr | |||
) |
Definition at line 4525 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04528 { 04529 ast_moh_start_ptr = start_ptr; 04530 ast_moh_stop_ptr = stop_ptr; 04531 ast_moh_cleanup_ptr = cleanup_ptr; 04532 }
int ast_internal_timing_enabled | ( | struct ast_channel * | chan | ) |
Check if the channel can run in internal timing mode.
chan | The channel to check |
Definition at line 2424 of file channel.c.
References ast_log(), ast_opt_internal_timing, LOG_DEBUG, option_debug, and ast_channel::timingfd.
Referenced by add_sdp(), and ast_read_generator_actions().
02425 { 02426 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02427 if (option_debug > 4) 02428 ast_log(LOG_DEBUG, "Internal timing is %s (option_internal_timing=%d chan->timingfd=%d)\n", ret? "enabled": "disabled", ast_opt_internal_timing, chan->timingfd); 02429 return ret; 02430 }
void ast_moh_cleanup | ( | struct ast_channel * | chan | ) |
Definition at line 4562 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04563 { 04564 if (ast_moh_cleanup_ptr) 04565 ast_moh_cleanup_ptr(chan); 04566 }
int ast_moh_start | ( | struct ast_channel * | chan, | |
const char * | mclass, | |||
const char * | interpclass | |||
) |
Turn on music on hold on a given channel.
chan | The channel structure that will get music on hold | |
mclass | The class to use if the musicclass is not currently set on the channel structure. | |
interpclass | The class to use if the musicclass is not currently set on the channel structure or in the mclass argument. |
0 | success | |
non-zero | failure |
Definition at line 4542 of file channel.c.
References ast_moh_start_ptr, ast_verbose(), option_verbose, and VERBOSE_PREFIX_3.
Referenced by alsa_indicate(), app_exec(), cb_events(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), moh0_exec(), moh1_exec(), moh3_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), and skinny_indicate().
04543 { 04544 if (ast_moh_start_ptr) 04545 return ast_moh_start_ptr(chan, mclass, interpclass); 04546 04547 if (option_verbose > 2) { 04548 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04549 mclass ? mclass : (interpclass ? interpclass : "default")); 04550 } 04551 04552 return 0; 04553 }
void ast_moh_stop | ( | struct ast_channel * | chan | ) |
Turn off music on hold on a given channel.
Turn off music on hold on a given channel
Definition at line 4556 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), ast_quiet_chan(), cb_events(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), misdn_transfer_bc(), moh0_exec(), moh1_exec(), moh4_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), skinny_indicate(), and try_calling().
04557 { 04558 if (ast_moh_stop_ptr) 04559 ast_moh_stop_ptr(chan); 04560 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 4574 of file channel.c.
References first.
Referenced by _sip_show_peer(), func_channel_read(), misdn_cfg_get_config_string(), print_group(), read_config(), and serialize_showchan().
04575 { 04576 unsigned int i; 04577 int first=1; 04578 char num[3]; 04579 04580 buf[0] = '\0'; 04581 04582 if (!group) /* Return empty string if no group */ 04583 return buf; 04584 04585 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04586 if (group & ((ast_group_t) 1 << i)) { 04587 if (!first) { 04588 strncat(buf, ", ", buflen - strlen(buf) - 1); 04589 } else { 04590 first=0; 04591 } 04592 snprintf(num, sizeof(num), "%u", i); 04593 strncat(buf, num, buflen - strlen(buf) - 1); 04594 } 04595 } 04596 return buf; 04597 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2694 of file channel.c.
References ast_channel::_state, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), AST_STATE_UP, ast_write(), ast_frame::data, LOG_DEBUG, ast_channel::name, option_debug, ast_channel::rawwriteformat, ast_frame::src, and ast_frame::subclass.
Referenced by ast_activate_generator().
02695 { 02696 struct ast_frame a = { AST_FRAME_VOICE }; 02697 char nothing[128]; 02698 02699 /* Send an empty audio frame to get things moving */ 02700 if (chan->_state != AST_STATE_UP) { 02701 if (option_debug) 02702 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02703 a.subclass = chan->rawwriteformat; 02704 a.data = nothing + AST_FRIENDLY_OFFSET; 02705 a.src = "ast_prod"; 02706 if (ast_write(chan, &a)) 02707 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02708 } 02709 return 0; 02710 }
int ast_queue_control | ( | struct ast_channel * | chan, | |
enum ast_control_frame_type | control | |||
) |
Queue a control frame with payload.
chan | channel to queue frame onto | |
control | type of control frame |
Definition at line 984 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by __dahdi_exception(), __oh323_update_info(), ast_pickup_call(), attempt_transfer(), auto_congest(), cb_events(), dahdi_handle_event(), dahdi_hangup(), gtalk_is_answered(), gtalk_ringing_ack(), handle_hd_hf(), handle_offhook_message(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response(), handle_response_invite(), handle_response_refer(), handle_soft_key_event_message(), handle_stimulus_message(), mgcp_call(), nbs_call(), phone_call(), pickup_do(), process_sdp(), receive_digit(), send_cause2ast(), setup_rtp_connection(), skinny_call(), skinny_unhold(), ss_thread(), and update_state().
00985 { 00986 struct ast_frame f = { AST_FRAME_CONTROL, }; 00987 00988 f.subclass = control; 00989 00990 return ast_queue_frame(chan, &f); 00991 }
int ast_queue_control_data | ( | struct ast_channel * | chan, | |
enum ast_control_frame_type | control, | |||
const void * | data, | |||
size_t | datalen | |||
) |
Queue a control frame with payload.
chan | channel to queue frame onto | |
control | type of control frame | |
data | pointer to payload data to be included in frame | |
datalen | number of bytes of payload data |
Definition at line 994 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by action_atxfer(), dahdi_handle_event(), dahdi_hangup(), iax2_queue_control_data(), process_sdp(), and skinny_hold().
00996 { 00997 struct ast_frame f = { AST_FRAME_CONTROL, }; 00998 00999 f.subclass = control; 01000 f.data = (void *) data; 01001 f.datalen = datalen; 01002 01003 return ast_queue_frame(chan, &f); 01004 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin | |||
) |
Queue an outgoing frame.
Definition at line 961 of file channel.c.
References __ast_queue_frame().
Referenced by __oh323_rtp_create(), __oh323_update_info(), agent_new(), alsa_call(), ast_channel_masquerade(), ast_channel_setwhentohangup(), ast_do_masquerade(), ast_dsp_process(), ast_queue_control(), ast_queue_control_data(), ast_queue_hangup(), ast_softhangup_nolock(), cb_events(), console_answer(), console_answer_deprecated(), console_dial(), console_dial_deprecated(), console_flash(), console_flash_deprecated(), console_sendtext(), console_sendtext_deprecated(), dahdi_queue_frame(), dictate_exec(), do_immediate_setup(), gtalk_handle_dtmf(), handle_keypad_button_message(), handle_request_info(), handle_request_invite(), handle_response_invite(), iax2_queue_frame(), local_queue_frame(), mgcp_queue_frame(), oh323_simulate_dtmf_end(), oss_call(), process_sdp(), queue_dtmf_readq(), receive_digit(), receive_message(), rpt_call(), and wakeup_sub().
00962 { 00963 return __ast_queue_frame(chan, fin, 0); 00964 }
int ast_queue_frame_head | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Queue an outgoing frame to the head of the frame queue.
chan | the channel to queue the frame on | |
f | the frame to queue. Note that this frame will be duplicated by this function. It is the responsibility of the caller to handle freeing the memory associated with the frame being passed if necessary. |
0 | success | |
non-zero | failure |
Definition at line 966 of file channel.c.
References __ast_queue_frame().
Referenced by ast_autoservice_stop().
00967 { 00968 return __ast_queue_frame(chan, fin, 1); 00969 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 972 of file channel.c.
References ast_channel::_softhangup, ast_channel_trylock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FRAME_CONTROL, ast_queue_frame(), AST_SOFTHANGUP_DEV, and f.
Referenced by __oh323_update_info(), __sip_autodestruct(), cleanup_connection(), console_hangup(), console_hangup_deprecated(), dahdi_handle_event(), gtalk_hangup_farend(), gtalk_is_answered(), handle_onhook_message(), handle_request_bye(), handle_request_cancel(), handle_response(), handle_response_invite(), handle_soft_key_event_message(), hangup_chan(), hangup_connection(), iax2_destroy(), iax2_queue_hangup(), local_hangup(), mgcp_queue_hangup(), misdn_answer(), pri_hangup_all(), and retrans_pkt().
00973 { 00974 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 00975 /* Yeah, let's not change a lock-critical value without locking */ 00976 if (!ast_channel_trylock(chan)) { 00977 chan->_softhangup |= AST_SOFTHANGUP_DEV; 00978 ast_channel_unlock(chan); 00979 } 00980 return ast_queue_frame(chan, &f); 00981 }
struct ast_frame* ast_read | ( | struct ast_channel * | chan | ) |
Reads a frame.
chan | channel to read a frame from Read a frame. |
Definition at line 2432 of file channel.c.
References __ast_read().
Referenced by __adsi_transmit_messages(), __ast_play_and_record(), __ast_request_and_dial(), adsi_careful_send(), agent_ack_sleep(), agent_read(), app_exec(), ast_feature_request_and_dial(), ast_recvtext(), ast_safe_sleep_conditional(), ast_tonepair(), ast_udptl_bridge(), ast_waitfordigit_full(), async_wait(), autoservice_run(), background_detect_exec(), bridge_native_loop(), bridge_p2p_loop(), channel_spy(), check_goto_on_transfer(), conf_exec(), conf_flush(), conf_run(), dahdi_bridge(), dictate_exec(), disa_exec(), do_atxfer(), do_idle_thread(), do_parking_thread(), do_waiting(), echo_exec(), features_read(), find_cache(), handle_invite_replaces(), handle_recordfile(), iax_park_thread(), ices_exec(), isAnsweringMachine(), masq_park_call(), measurenoise(), misdn_bridge(), monitor_dial(), mp3_exec(), NBScat_exec(), receive_dtmf_digits(), recordthread(), rpt(), run_agi(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), wait_for_answer(), wait_for_hangup(), wait_for_winner(), waitforring_exec(), and waitstream_core().
02433 { 02434 return __ast_read(chan, 0); 02435 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 1932 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), ast_format_rate(), AST_FRAME_CNG, ast_internal_timing_enabled(), ast_log(), ast_settimeout(), f, ast_generator::generate, ast_channel::generator, generator_force(), ast_channel::generatordata, LOG_DEBUG, option_debug, ast_channel::timingfd, ast_channel::timingfunc, and ast_channel::writeformat.
Referenced by __ast_read().
01933 { 01934 if (chan->generatordata && !ast_internal_timing_enabled(chan)) { 01935 void *tmp = chan->generatordata; 01936 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01937 int res; 01938 int samples; 01939 01940 if (chan->timingfunc) { 01941 if (option_debug > 1) 01942 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 01943 ast_settimeout(chan, 0, NULL, NULL); 01944 } 01945 01946 chan->generatordata = NULL; /* reset, to let writes go through */ 01947 01948 if (f->subclass != chan->writeformat) { 01949 float factor; 01950 factor = ((float) ast_format_rate(chan->writeformat)) / ((float) ast_format_rate(f->subclass)); 01951 samples = (int) ( ((float) f->samples) * factor ); 01952 } else { 01953 samples = f->samples; 01954 } 01955 01956 if (chan->generator->generate) { 01957 generate = chan->generator->generate; 01958 } 01959 /* This unlock is here based on two assumptions that hold true at this point in the 01960 * code. 1) this function is only called from within __ast_read() and 2) all generators 01961 * call ast_write() in their generate callback. 01962 * 01963 * The reason this is added is so that when ast_write is called, the lock that occurs 01964 * there will not recursively lock the channel. Doing this will cause intended deadlock 01965 * avoidance not to work in deeper functions 01966 */ 01967 ast_channel_unlock(chan); 01968 res = generate(chan, tmp, f->datalen, samples); 01969 ast_channel_lock(chan); 01970 chan->generatordata = tmp; 01971 if (res) { 01972 if (option_debug > 1) 01973 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01974 ast_deactivate_generator(chan); 01975 } 01976 01977 } else if (f->frametype == AST_FRAME_CNG) { 01978 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 01979 if (option_debug > 1) 01980 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 01981 ast_settimeout(chan, 160, generator_force, chan); 01982 } 01983 } 01984 }
struct ast_frame* ast_read_noaudio | ( | struct ast_channel * | chan | ) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame.
chan | channel to read a frame from |
Definition at line 2437 of file channel.c.
References __ast_read().
Referenced by conf_run().
02438 { 02439 return __ast_read(chan, 1); 02440 }
int ast_readstring | ( | struct ast_channel * | c, | |
char * | s, | |||
int | len, | |||
int | timeout, | |||
int | rtimeout, | |||
char * | enders | |||
) |
Reads multiple digits
c | channel to read from | |
s | string to read in to. Must be at least the size of your length | |
len | how many digits to read (maximum) | |
timeout | how long to timeout between digits | |
rtimeout | timeout to wait on the first digit | |
enders | digits to end the string Read in a digit string "s", max length "len", maximum timeout between digits "timeout" (-1 for none), terminated by anything in "enders". Give them rtimeout for the first digit. Returns 0 on normal return, or 1 on a timeout. In the case of a timeout, any digits that were read before the timeout will still be available in s. RETURNS 2 in full version when ctrlfd is available, NOT 1 |
Definition at line 3219 of file channel.c.
References ast_readstring_full().
Referenced by __adsi_transmit_messages(), ast_adsi_begin_download(), ast_adsi_get_cpeinfo(), ast_adsi_load_session(), ast_app_getdata(), dialout(), do_directory(), forward_message(), privacy_exec(), vm_authenticate(), vm_newuser(), and vm_options().
03220 { 03221 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03222 }
int ast_readstring_full | ( | struct ast_channel * | c, | |
char * | s, | |||
int | len, | |||
int | timeout, | |||
int | ftimeout, | |||
char * | enders, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 3224 of file channel.c.
References ast_check_hangup(), AST_DIGIT_ANY, AST_FLAG_ZOMBIE, ast_stopstream(), ast_test_flag, ast_waitfordigit_full(), ast_waitstream_full(), and ast_channel::stream.
Referenced by ast_app_getdata_full(), and ast_readstring().
03225 { 03226 int pos = 0; /* index in the buffer where we accumulate digits */ 03227 int to = ftimeout; 03228 03229 /* Stop if we're a zombie or need a soft hangup */ 03230 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03231 return -1; 03232 if (!len) 03233 return -1; 03234 for (;;) { 03235 int d; 03236 if (c->stream) { 03237 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03238 ast_stopstream(c); 03239 usleep(1000); 03240 if (!d) 03241 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03242 } else { 03243 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03244 } 03245 if (d < 0) 03246 return -1; 03247 if (d == 0) { 03248 s[pos]='\0'; 03249 return 1; 03250 } 03251 if (d == 1) { 03252 s[pos]='\0'; 03253 return 2; 03254 } 03255 if (!strchr(enders, d)) 03256 s[pos++] = d; 03257 if (strchr(enders, d) || (pos >= len)) { 03258 s[pos]='\0'; 03259 return 0; 03260 } 03261 to = timeout; 03262 } 03263 /* Never reached */ 03264 return 0; 03265 }
int ast_recvchar | ( | struct ast_channel * | chan, | |
int | timeout | |||
) |
Receives a text character from a channel.
chan | channel to act upon | |
timeout | timeout in milliseconds (0 for infinite wait) Read a char of text from a channel Returns 0 on success, -1 on failure |
Definition at line 2574 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02575 { 02576 int c; 02577 char *buf = ast_recvtext(chan, timeout); 02578 if (buf == NULL) 02579 return -1; /* error or timeout */ 02580 c = *(unsigned char *)buf; 02581 free(buf); 02582 return c; 02583 }
char* ast_recvtext | ( | struct ast_channel * | chan, | |
int | timeout | |||
) |
Receives a text string from a channel Read a string of text from a channel.
chan | channel to act upon | |
timeout | timeout in milliseconds (0 for infinite wait) |
Definition at line 2585 of file channel.c.
References ast_check_hangup(), AST_CONTROL_HANGUP, AST_FRAME_CONTROL, AST_FRAME_TEXT, ast_frfree, ast_read(), ast_strndup, ast_waitfor(), and f.
Referenced by ast_recvchar(), and handle_recvtext().
02586 { 02587 int res, done = 0; 02588 char *buf = NULL; 02589 02590 while (!done) { 02591 struct ast_frame *f; 02592 if (ast_check_hangup(chan)) 02593 break; 02594 res = ast_waitfor(chan, timeout); 02595 if (res <= 0) /* timeout or error */ 02596 break; 02597 timeout = res; /* update timeout */ 02598 f = ast_read(chan); 02599 if (f == NULL) 02600 break; /* no frame */ 02601 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02602 done = 1; /* force a break */ 02603 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02604 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02605 done = 1; 02606 } 02607 ast_frfree(f); 02608 } 02609 return buf; 02610 }
struct ast_channel* ast_request | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int * | status | |||
) |
Requests a channel.
type | type of channel to request | |
format | requested channel format (codec) | |
data | data to pass to the channel requester | |
status | status Request a channel of a given type, with data as optional information used by the low level module |
Definition at line 3125 of file channel.c.
References AST_CAUSE_BEARERCAPABILITY_NOTAVAIL, AST_CAUSE_NOSUCHDRIVER, AST_CAUSE_NOTDEFINED, AST_FORMAT_AUDIO_MASK, AST_FORMAT_VIDEO_MASK, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_translator_best_choice(), capabilities, ast_channel_tech::capabilities, ast_channel_tech::requester, chanlist::tech, and ast_channel_tech::type.
Referenced by __ast_request_and_dial(), agent_request(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), build_conf(), chanavail_exec(), conf_run(), connect_link(), features_alloc(), findmeexec(), ring_entry(), rpt(), rpt_call(), rpt_tele_thread(), and wait_for_answer().
03126 { 03127 struct chanlist *chan; 03128 struct ast_channel *c; 03129 int capabilities; 03130 int fmt; 03131 int res; 03132 int foo; 03133 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03134 03135 if (!cause) 03136 cause = &foo; 03137 *cause = AST_CAUSE_NOTDEFINED; 03138 03139 if (AST_LIST_LOCK(&channels)) { 03140 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03141 return NULL; 03142 } 03143 03144 AST_LIST_TRAVERSE(&backends, chan, list) { 03145 if (strcasecmp(type, chan->tech->type)) 03146 continue; 03147 03148 capabilities = chan->tech->capabilities; 03149 fmt = format & AST_FORMAT_AUDIO_MASK; 03150 res = ast_translator_best_choice(&fmt, &capabilities); 03151 if (res < 0) { 03152 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03153 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 03154 AST_LIST_UNLOCK(&channels); 03155 return NULL; 03156 } 03157 AST_LIST_UNLOCK(&channels); 03158 if (!chan->tech->requester) 03159 return NULL; 03160 03161 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03162 return NULL; 03163 03164 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03165 return c; 03166 } 03167 03168 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03169 *cause = AST_CAUSE_NOSUCHDRIVER; 03170 AST_LIST_UNLOCK(&channels); 03171 03172 return NULL; 03173 }
struct ast_channel* ast_request_and_dial | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int | timeout, | |||
int * | reason, | |||
const char * | cidnum, | |||
const char * | cidname | |||
) |
Request a channel of a given type, with data as optional information used by the low level module and attempt to place a call on it.
type | type of channel to request | |
format | requested channel format | |
data | data to pass to the channel requester | |
timeout | maximum amount of time to wait for an answer | |
reason | why unsuccessful (if unsuceessful) | |
cidnum | Caller-ID Number | |
cidname | Caller-ID Name |
Definition at line 3120 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
03121 { 03122 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 03123 }
int ast_safe_sleep | ( | struct ast_channel * | chan, | |
int | ms | |||
) |
Wait for a specied amount of time, looking for hangups.
chan | channel to wait for | |
ms | length of time in milliseconds to sleep Waits for a specified amount of time, servicing the channel as required. |
Definition at line 1194 of file channel.c.
References ast_safe_sleep_conditional().
Referenced by __login_exec(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_dtmf_stream(), ast_senddigit(), builtin_parkcall(), conf_run(), dictate_exec(), flash_exec(), function_ilink(), mgcp_ss(), milliwatt_exec(), moh0_exec(), moh1_exec(), old_milliwatt_exec(), park_call_exec(), pbx_builtin_answer(), pbx_builtin_wait(), play_tone_pair(), playtone(), privacy_exec(), receive_ademco_contact_id(), rpt_call(), rpt_exec(), rpt_tele_thread(), send_morse(), send_tone_telemetry(), skinny_ss(), ss_thread(), testclient_exec(), testserver_exec(), try_calling(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01195 { 01196 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01197 }
int ast_safe_sleep_conditional | ( | struct ast_channel * | chan, | |
int | ms, | |||
int(*)(void *) | cond, | |||
void * | data | |||
) |
Wait for a specied amount of time, looking for hangups and a condition argument.
chan | channel to wait for | |
ms | length of time in milliseconds to sleep | |
cond | a function pointer for testing continue condition | |
data | argument to be passed to the condition test function |
Definition at line 1173 of file channel.c.
References ast_frfree, ast_read(), ast_waitfor(), and f.
Referenced by __login_exec(), and ast_safe_sleep().
01174 { 01175 struct ast_frame *f; 01176 01177 while (ms > 0) { 01178 if (cond && ((*cond)(data) == 0)) 01179 return 0; 01180 ms = ast_waitfor(chan, ms); 01181 if (ms < 0) 01182 return -1; 01183 if (ms > 0) { 01184 f = ast_read(chan); 01185 if (!f) 01186 return -1; 01187 ast_frfree(f); 01188 } 01189 } 01190 return 0; 01191 }
char* ast_safe_string_alloc | ( | const char * | fmt, | |
... | ||||
) |
printf the string into a correctly sized mallocd buffer, and return the buffer
return a mallocd string with the result of sprintf of the fmt and following args
Definition at line 409 of file channel.c.
References ast_malloc, and len().
Referenced by dahdi_new(), and features_new().
00410 { 00411 char *b2, buf[1]; 00412 int len; 00413 va_list args; 00414 00415 va_start(args, fmt); 00416 len = vsnprintf(buf, 1, fmt, args); 00417 va_end(args); 00418 00419 if (!(b2 = ast_malloc(len + 1))) 00420 return NULL; 00421 00422 va_start(args, fmt); 00423 vsnprintf(b2, len + 1, fmt, args); 00424 va_end(args); 00425 00426 return b2; 00427 }
int ast_say_character_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4856 of file channel.c.
References ast_say_character_str_full.
Referenced by common_exec(), pbx_builtin_saycharacters(), play_mailbox_owner(), rpt_tele_thread(), and saycharstr().
04858 { 04859 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 04860 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4850 of file channel.c.
References ast_say_digit_str_full.
Referenced by invent_message(), mgcp_ss(), pbx_builtin_saydigits(), play_message_callerid(), and ss_thread().
04852 { 04853 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 04854 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4844 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
04846 { 04847 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 04848 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 4868 of file channel.c.
References ast_say_digit_str_full.
Referenced by __say_init(), ast_say_digits(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_number_full_cz(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_en(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_ge(), ast_say_number_full_he(), ast_say_number_full_it(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), and ast_say_number_full_tw().
04870 { 04871 char buf[256]; 04872 04873 snprintf(buf, sizeof(buf), "%d", num); 04874 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 04875 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4838 of file channel.c.
References ast_say_enumeration_full.
Referenced by ast_say_date_da(), ast_say_date_de(), ast_say_date_with_format_da(), ast_say_date_with_format_de(), ast_say_date_with_format_en(), and ast_say_date_with_format_pl().
04840 { 04841 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 04842 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4832 of file channel.c.
References ast_say_number_full.
Referenced by ast_say_date_da(), ast_say_date_de(), ast_say_date_en(), ast_say_date_es(), ast_say_date_fr(), ast_say_date_ge(), ast_say_date_gr(), ast_say_date_he(), ast_say_date_nl(), ast_say_date_pt(), ast_say_date_with_format_da(), ast_say_date_with_format_de(), ast_say_date_with_format_en(), ast_say_date_with_format_es(), ast_say_date_with_format_fr(), ast_say_date_with_format_it(), ast_say_date_with_format_nl(), ast_say_date_with_format_pl(), ast_say_date_with_format_pt(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_ge(), ast_say_datetime_from_now_he(), ast_say_datetime_from_now_pt(), ast_say_datetime_he(), ast_say_datetime_pt(), ast_say_datetime_tw(), ast_say_time_de(), ast_say_time_en(), ast_say_time_es(), ast_say_time_fr(), ast_say_time_ge(), ast_say_time_gr(), ast_say_time_nl(), ast_say_time_pt(), ast_say_time_pt_BR(), ast_say_time_tw(), bridge_playfile(), conf_exec(), conf_run(), count_exec(), dictate_exec(), get_folder(), gr_say_number_female(), pbx_builtin_saynumber(), play_message(), play_message_duration(), rpt_tele_thread(), say_and_wait(), say_position(), saynum(), try_calling(), vm_intro_gr(), vm_intro_he(), vm_intro_pt(), and vm_intro_pt_BR().
04834 { 04835 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 04836 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4862 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
04864 { 04865 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 04866 }
int ast_senddigit | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Send a DTMF digit to a channel Send a DTMF digit to a channel.
chan | channel to act upon | |
digit | the DTMF digit to send, encoded in ASCII |
Definition at line 2684 of file channel.c.
References AST_DEFAULT_EMULATE_DTMF_DURATION, ast_safe_sleep(), ast_senddigit_begin(), ast_senddigit_end(), ast_channel_tech::send_digit_begin, and ast_channel::tech.
Referenced by ast_dtmf_stream(), do_dtmf_phone(), manager_play_dtmf(), and rpt_call().
02685 { 02686 if (chan->tech->send_digit_begin) { 02687 ast_senddigit_begin(chan, digit); 02688 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02689 } 02690 02691 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02692 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Definition at line 2625 of file channel.c.
References ast_log(), ast_playtones_start(), LOG_DEBUG, ast_channel::name, option_debug, ast_channel_tech::send_digit_begin, and ast_channel::tech.
Referenced by agent_digit_begin(), ast_senddigit(), ast_write(), and features_digit_begin().
02626 { 02627 /* Device does not support DTMF tones, lets fake 02628 * it by doing our own generation. */ 02629 static const char* dtmf_tones[] = { 02630 "941+1336", /* 0 */ 02631 "697+1209", /* 1 */ 02632 "697+1336", /* 2 */ 02633 "697+1477", /* 3 */ 02634 "770+1209", /* 4 */ 02635 "770+1336", /* 5 */ 02636 "770+1477", /* 6 */ 02637 "852+1209", /* 7 */ 02638 "852+1336", /* 8 */ 02639 "852+1477", /* 9 */ 02640 "697+1633", /* A */ 02641 "770+1633", /* B */ 02642 "852+1633", /* C */ 02643 "941+1633", /* D */ 02644 "941+1209", /* * */ 02645 "941+1477" /* # */ 02646 }; 02647 02648 if (!chan->tech->send_digit_begin) 02649 return 0; 02650 02651 if (!chan->tech->send_digit_begin(chan, digit)) 02652 return 0; 02653 02654 if (digit >= '0' && digit <='9') 02655 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02656 else if (digit >= 'A' && digit <= 'D') 02657 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02658 else if (digit == '*') 02659 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02660 else if (digit == '#') 02661 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02662 else { 02663 /* not handled */ 02664 if (option_debug) 02665 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02666 } 02667 02668 return 0; 02669 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Definition at line 2671 of file channel.c.
References ast_playtones_stop(), ast_channel::generator, ast_channel_tech::send_digit_end, and ast_channel::tech.
Referenced by agent_digit_end(), ast_senddigit(), ast_write(), and features_digit_end().
02672 { 02673 int res = -1; 02674 02675 if (chan->tech->send_digit_end) 02676 res = chan->tech->send_digit_end(chan, digit, duration); 02677 02678 if (res && chan->generator) 02679 ast_playtones_stop(chan); 02680 02681 return 0; 02682 }
int ast_sendtext | ( | struct ast_channel * | chan, | |
const char * | text | |||
) |
Sends text to a channel Write text to a display on a channel.
chan | channel to act upon | |
text | string of text to send on the channel |
Definition at line 2612 of file channel.c.
References ast_check_hangup(), ast_clear_flag, AST_FLAG_BLOCKING, AST_FLAG_ZOMBIE, ast_test_flag, CHECK_BLOCKING, ast_channel_tech::send_text, and ast_channel::tech.
Referenced by agent_sendtext(), handle_sendtext(), and sendtext_exec().
02613 { 02614 int res = 0; 02615 /* Stop if we're a zombie or need a soft hangup */ 02616 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02617 return -1; 02618 CHECK_BLOCKING(chan); 02619 if (chan->tech->send_text) 02620 res = chan->tech->send_text(chan, text); 02621 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02622 return res; 02623 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 3779 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_describe_caller_presentation(), ast_strdup, ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_pres, free, manager_event(), ast_channel::name, S_OR, and ast_channel::uniqueid.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), callerid_write(), dahdi_read(), disa_exec(), findmeexec(), handle_setcallerid(), lookupcidname_exec(), mgcp_ss(), privacy_exec(), read_config(), setcallerid_exec(), skinny_newcall(), ss_thread(), and wait_for_answer().
03780 { 03781 ast_channel_lock(chan); 03782 03783 if (callerid) { 03784 if (chan->cid.cid_num) 03785 free(chan->cid.cid_num); 03786 chan->cid.cid_num = ast_strdup(callerid); 03787 } 03788 if (calleridname) { 03789 if (chan->cid.cid_name) 03790 free(chan->cid.cid_name); 03791 chan->cid.cid_name = ast_strdup(calleridname); 03792 } 03793 if (ani) { 03794 if (chan->cid.cid_ani) 03795 free(chan->cid.cid_ani); 03796 chan->cid.cid_ani = ast_strdup(ani); 03797 } 03798 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03799 "Channel: %s\r\n" 03800 "CallerID: %s\r\n" 03801 "CallerIDName: %s\r\n" 03802 "Uniqueid: %s\r\n" 03803 "CID-CallingPres: %d (%s)\r\n", 03804 chan->name, 03805 S_OR(chan->cid.cid_num, "<Unknown>"), 03806 S_OR(chan->cid.cid_name, "<Unknown>"), 03807 chan->uniqueid, 03808 chan->cid.cid_pres, 03809 ast_describe_caller_presentation(chan->cid.cid_pres) 03810 ); 03811 03812 ast_channel_unlock(chan); 03813 }
int ast_set_read_format | ( | struct ast_channel * | chan, | |
int | format | |||
) |
Sets read format on channel chan Set read format for channel to whichever component of "format" is best.
chan | channel to change | |
format | format to change to |
Definition at line 2965 of file channel.c.
References ast_channel::rawreadformat, ast_channel::readformat, ast_channel::readtrans, and set_format().
Referenced by __ast_play_and_record(), __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_do_masquerade(), attempt_reconnect(), background_detect_exec(), build_conf(), conf_run(), connect_link(), dictate_exec(), disa_exec(), do_waiting(), eagi_exec(), echo_exec(), gtalk_rtp_read(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mgcp_rtp_read(), oh323_rtp_read(), old_milliwatt_exec(), process_sdp(), rpt(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), speech_background(), and update_features().
02966 { 02967 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 02968 &chan->readtrans, 0); 02969 }
void ast_set_variables | ( | struct ast_channel * | chan, | |
struct ast_variable * | vars | |||
) |
adds a list of channel variables to a channel
chan | the channel | |
vars | a linked list of variables |
Definition at line 4599 of file channel.c.
References ast_variable::name, ast_variable::next, pbx_builtin_setvar_helper(), and ast_variable::value.
Referenced by __ast_request_and_dial(), ast_pbx_outgoing_app(), and ast_pbx_outgoing_exten().
04600 { 04601 struct ast_variable *cur; 04602 04603 for (cur = vars; cur; cur = cur->next) 04604 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04605 }
int ast_set_write_format | ( | struct ast_channel * | chan, | |
int | format | |||
) |
Sets write format on channel chan Set write format for channel to whichever compoent of "format" is best.
chan | channel to change | |
format | new format for writing |
Definition at line 2971 of file channel.c.
References ast_channel::rawwriteformat, set_format(), ast_channel::writeformat, and ast_channel::writetrans.
Referenced by __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_do_masquerade(), ast_openstream_full(), ast_stopstream(), attempt_reconnect(), build_conf(), chanspy_exec(), conf_run(), connect_link(), disa_exec(), echo_exec(), extenspy_exec(), gtalk_rtp_read(), linear_alloc(), linear_release(), mgcp_rtp_read(), moh_alloc(), moh_files_release(), moh_release(), mp3_exec(), NBScat_exec(), oh323_rtp_read(), old_milliwatt_exec(), playtones_alloc(), playtones_release(), process_sdp(), rpt(), send_waveform_to_channel(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), tonepair_alloc(), tonepair_release(), and update_features().
02972 { 02973 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 02974 &chan->writetrans, 1); 02975 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 3815 of file channel.c.
References ast_channel::_state, AST_CHANNEL_NAME, ast_copy_string(), ast_device_state_changed_literal(), ast_state2str(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, manager_event(), name, ast_channel::name, S_OR, and ast_channel::uniqueid.
Referenced by __ast_read(), __dahdi_exception(), __oh323_update_info(), agent_call(), alsa_answer(), ast_answer(), cb_events(), check_availability(), dahdi_answer(), dahdi_call(), dahdi_handle_event(), dahdi_indicate(), dahdi_read(), gtalk_call(), gtalk_newcall(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_response_invite(), handle_soft_key_event_message(), handle_stimulus_message(), iax2_call(), mgcp_answer(), mgcp_call(), mgcp_ss(), misdn_call(), misdn_indication(), nbs_call(), nbs_hangup(), oh323_answer(), oss_answer(), pbx_builtin_busy(), pbx_builtin_congestion(), phone_answer(), phone_call(), phone_exception(), phone_hangup(), phone_write(), release_chan(), sip_answer(), skinny_answer(), skinny_call(), skinny_newcall(), ss_thread(), and update_state().
03816 { 03817 char name[AST_CHANNEL_NAME], *dashptr; 03818 int oldstate = chan->_state; 03819 03820 if (oldstate == state) 03821 return 0; 03822 03823 ast_copy_string(name, chan->name, sizeof(name)); 03824 if ((dashptr = strrchr(name, '-'))) { 03825 *dashptr = '\0'; 03826 } 03827 03828 chan->_state = state; 03829 ast_device_state_changed_literal(name); 03830 /* setstate used to conditionally report Newchannel; this is no more */ 03831 manager_event(EVENT_FLAG_CALL, 03832 "Newstate", 03833 "Channel: %s\r\n" 03834 "State: %s\r\n" 03835 "CallerID: %s\r\n" 03836 "CallerIDName: %s\r\n" 03837 "Uniqueid: %s\r\n", 03838 chan->name, ast_state2str(chan->_state), 03839 S_OR(chan->cid.cid_num, "<unknown>"), 03840 S_OR(chan->cid.cid_name, "<unknown>"), 03841 chan->uniqueid); 03842 03843 return 0; 03844 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 1837 of file channel.c.
References ast_log(), LOG_DEBUG, option_debug, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_activate_generator(), ast_deactivate_generator(), ast_read_generator_actions(), ast_readaudio_callback(), and filestream_destructor().
01838 { 01839 int res = -1; 01840 #ifdef HAVE_DAHDI 01841 if (c->timingfd > -1) { 01842 if (!func) { 01843 samples = 0; 01844 data = 0; 01845 } 01846 if (option_debug) 01847 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 01848 res = ioctl(c->timingfd, DAHDI_TIMERCONFIG, &samples); 01849 c->timingfunc = func; 01850 c->timingdata = data; 01851 } 01852 #endif 01853 return res; 01854 }
int ast_shutting_down | ( | void | ) |
Returns non-zero if Asterisk is being shut down.
Returns non-zero if Asterisk is being shut down
Definition at line 461 of file channel.c.
Referenced by handle_request_options().
00462 { 00463 return shutting_down; 00464 }
int ast_softhangup | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel.
chan | channel to be soft-hung-up Call the protocol layer, but don't destroy the channel structure (use this if you are trying to safely hangup a channel managed by another thread. | |
cause | Ast hangupcause for hangup |
Definition at line 1437 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_softhangup_nolock().
Referenced by __ast_module_user_hangup_all(), __login_exec(), __unload_module(), action_hangup(), agent_hangup(), agent_logoff(), ast_begin_shutdown(), ast_dial_join(), conf_free(), connect_link(), dahdi_handle_event(), function_ilink(), handle_hangup(), handle_link_data(), handle_softhangup(), manager_park(), read_agent_config(), rpt(), rpt_call(), rpt_do_restart(), sla_handle_hold_event(), softhangup_exec(), start_spying(), startmon(), and unload_module().
01438 { 01439 int res; 01440 ast_channel_lock(chan); 01441 res = ast_softhangup_nolock(chan, cause); 01442 ast_channel_unlock(chan); 01443 return res; 01444 }
int ast_softhangup_nolock | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel (no channel lock).
chan | channel to be soft-hung-up | |
cause | Ast hangupcause for hangup (see cause.h) |
Definition at line 1423 of file channel.c.
References ast_channel::_softhangup, AST_FLAG_BLOCKING, ast_log(), ast_null_frame, ast_queue_frame(), ast_test_flag, ast_channel::blocker, LOG_DEBUG, ast_channel::name, and option_debug.
Referenced by ast_async_goto(), ast_softhangup(), attempt_transfer(), dahdi_softhangup_all(), do_monitor(), oh323_indicate(), sip_indicate(), and skinny_indicate().
01424 { 01425 if (option_debug) 01426 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01427 /* Inform channel driver that we need to be hung up, if it cares */ 01428 chan->_softhangup |= cause; 01429 ast_queue_frame(chan, &ast_null_frame); 01430 /* Interrupt any poll call or such */ 01431 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01432 pthread_kill(chan->blocker, SIGURG); 01433 return 0; 01434 }
char* ast_state2str | ( | enum | ast_channel_state | ) |
Gives the string form of a given channel state.
ast_channel_state | state to get the name of Give a name to a state Returns the text form of the binary state given |
Definition at line 600 of file channel.c.
References AST_STATE_BUSY, AST_STATE_DIALING, AST_STATE_DIALING_OFFHOOK, AST_STATE_DOWN, AST_STATE_OFFHOOK, AST_STATE_PRERING, AST_STATE_RESERVED, AST_STATE_RING, AST_STATE_RINGING, AST_STATE_UP, ast_threadstorage_get(), STATE2STR_BUFSIZE, and state2str_threadbuf.
Referenced by action_status(), agent_hangup(), ast_setstate(), attempt_transfer(), func_channel_read(), handle_chanlist(), handle_chanlist_deprecated(), handle_invite_replaces(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_new(), serialize_showchan(), and sip_hangup().
00601 { 00602 char *buf; 00603 00604 switch(state) { 00605 case AST_STATE_DOWN: 00606 return "Down"; 00607 case AST_STATE_RESERVED: 00608 return "Rsrvd"; 00609 case AST_STATE_OFFHOOK: 00610 return "OffHook"; 00611 case AST_STATE_DIALING: 00612 return "Dialing"; 00613 case AST_STATE_RING: 00614 return "Ring"; 00615 case AST_STATE_RINGING: 00616 return "Ringing"; 00617 case AST_STATE_UP: 00618 return "Up"; 00619 case AST_STATE_BUSY: 00620 return "Busy"; 00621 case AST_STATE_DIALING_OFFHOOK: 00622 return "Dialing Offhook"; 00623 case AST_STATE_PRERING: 00624 return "Pre-ring"; 00625 default: 00626 if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE))) 00627 return "Unknown"; 00628 snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state); 00629 return buf; 00630 } 00631 }
int ast_str2cause | ( | const char * | name | ) |
Convert a symbolic hangup cause to number.
name | string form of the cause Returns the cause code |
Definition at line 588 of file channel.c.
References causes.
Referenced by pbx_builtin_hangup().
00589 { 00590 int x; 00591 00592 for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++) 00593 if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0) 00594 return causes[x].cause; 00595 00596 return -1; 00597 }
int ast_tonepair | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Play a tone pair for a given amount of time
Definition at line 4471 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04472 { 04473 int res; 04474 04475 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04476 return res; 04477 04478 /* Give us some wiggle room */ 04479 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04480 struct ast_frame *f = ast_read(chan); 04481 if (f) 04482 ast_frfree(f); 04483 else 04484 return -1; 04485 } 04486 return 0; 04487 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4453 of file channel.c.
References ast_activate_generator(), tonepair_def::duration, tonepair_def::freq1, tonepair_def::freq2, tonepair, and tonepair_def::vol.
Referenced by ast_tonepair(), play_dialtone(), play_tone_pair(), rpt_tele_thread(), and sendnoise().
04454 { 04455 struct tonepair_def d = { 0, }; 04456 04457 d.freq1 = freq1; 04458 d.freq2 = freq2; 04459 d.duration = duration; 04460 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04461 if (ast_activate_generator(chan, &tonepair, &d)) 04462 return -1; 04463 return 0; 04464 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4466 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04467 { 04468 ast_deactivate_generator(chan); 04469 }
int ast_transfer | ( | struct ast_channel * | chan, | |
char * | dest | |||
) |
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested.
Called by:
Definition at line 3201 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_ZOMBIE, ast_test_flag, ast_channel::tech, and ast_channel_tech::transfer.
Referenced by transfer_exec().
03202 { 03203 int res = -1; 03204 03205 /* Stop if we're a zombie or need a soft hangup */ 03206 ast_channel_lock(chan); 03207 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03208 if (chan->tech->transfer) { 03209 res = chan->tech->transfer(chan, dest); 03210 if (!res) 03211 res = 1; 03212 } else 03213 res = 0; 03214 } 03215 ast_channel_unlock(chan); 03216 return res; 03217 }
char* ast_transfercapability2str | ( | int | transfercapability | ) | const |
Gives the string form of a given transfer capability.
transfercapability | transfercapabilty to get the name of Give a name to a transfercapbility See above Returns the text form of the binary transfer capbility |
Definition at line 634 of file channel.c.
References AST_TRANS_CAP_3_1K_AUDIO, AST_TRANS_CAP_DIGITAL, AST_TRANS_CAP_DIGITAL_W_TONES, AST_TRANS_CAP_RESTRICTED_DIGITAL, AST_TRANS_CAP_SPEECH, and AST_TRANS_CAP_VIDEO.
Referenced by cb_events(), dahdi_call(), dahdi_new(), misdn_call(), and oh323_call().
00635 { 00636 switch(transfercapability) { 00637 case AST_TRANS_CAP_SPEECH: 00638 return "SPEECH"; 00639 case AST_TRANS_CAP_DIGITAL: 00640 return "DIGITAL"; 00641 case AST_TRANS_CAP_RESTRICTED_DIGITAL: 00642 return "RESTRICTED_DIGITAL"; 00643 case AST_TRANS_CAP_3_1K_AUDIO: 00644 return "3K1AUDIO"; 00645 case AST_TRANS_CAP_DIGITAL_W_TONES: 00646 return "DIGITAL_W_TONES"; 00647 case AST_TRANS_CAP_VIDEO: 00648 return "VIDEO"; 00649 default: 00650 return "UNKNOWN"; 00651 } 00652 }
void ast_uninstall_music_functions | ( | void | ) |
Definition at line 4534 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by unload_module().
04535 { 04536 ast_moh_start_ptr = NULL; 04537 ast_moh_stop_ptr = NULL; 04538 ast_moh_cleanup_ptr = NULL; 04539 }
int ast_waitfor | ( | struct ast_channel * | chan, | |
int | ms | |||
) |
Wait for input on a channel.
chan | channel to wait on | |
ms | length of time to wait on the channel Wait for input on a channel for a given # of milliseconds (<0 for indefinite). |
Definition at line 1821 of file channel.c.
References ast_waitfor_nandfds().
Referenced by __adsi_transmit_messages(), __ast_play_and_record(), __ast_request_and_dial(), adsi_careful_send(), agent_ack_sleep(), ast_dtmf_stream(), ast_recvtext(), ast_safe_sleep_conditional(), ast_tonepair(), async_wait(), background_detect_exec(), channel_spy(), conf_exec(), conf_flush(), dictate_exec(), disa_exec(), do_idle_thread(), do_waiting(), echo_exec(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mp3_exec(), NBScat_exec(), receive_dtmf_digits(), recordthread(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), wait_for_hangup(), waitforring_exec(), and waitstream_core().
01822 { 01823 int oldms = ms; /* -1 if no timeout */ 01824 01825 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 01826 if ((ms < 0) && (oldms < 0)) 01827 ms = 0; 01828 return ms; 01829 }
struct ast_channel* ast_waitfor_n | ( | struct ast_channel ** | chan, | |
int | n, | |||
int * | ms | |||
) |
Waits for input on a group of channels Wait for input on an array of channels for a given # of milliseconds.
chan | an array of pointers to channels | |
n | number of channels that are to be waited upon | |
ms | time "ms" is modified in-place, if applicable |
Definition at line 1816 of file channel.c.
References ast_waitfor_nandfds().
Referenced by ast_feature_request_and_dial(), ast_udptl_bridge(), autoservice_run(), bridge_native_loop(), dahdi_bridge(), misdn_bridge(), monitor_dial(), rpt(), wait_for_answer(), and wait_for_winner().
01817 { 01818 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 01819 }
int ast_waitfor_n_fd | ( | int * | fds, | |
int | n, | |||
int * | ms, | |||
int * | exception | |||
) |
Waits for input on an fd This version works on fd's only. Be careful with it.
Definition at line 1660 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01661 { 01662 int winner = -1; 01663 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01664 return winner; 01665 }
struct ast_channel* ast_waitfor_nandfds | ( | struct ast_channel ** | chan, | |
int | n, | |||
int * | fds, | |||
int | nfds, | |||
int * | exception, | |||
int * | outfd, | |||
int * | ms | |||
) |
Waits for activity on a group of channels.
chan | an array of pointers to channels | |
n | number of channels that are to be waited upon | |
fds | an array of fds to wait upon | |
nfds | the number of fds to wait upon | |
exception | exception flag | |
outfd | fd that had activity on it | |
ms | how long the wait was Big momma function here. Wait for activity on any of the n channels, or any of the nfds file descriptors. |
Definition at line 1668 of file channel.c.
References ast_channel::_softhangup, ast_add_fd(), ast_channel_lock, ast_channel_unlock, ast_clear_flag, ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, ast_log(), AST_MAX_FDS, ast_set_flag, AST_SOFTHANGUP_TIMEOUT, ast_tvdiff_ms(), ast_tvnow(), CHECK_BLOCKING, errno, pollfd::fd, poll(), POLLPRI, and ast_channel::whentohangup.
Referenced by app_exec(), ast_waitfor(), ast_waitfor_n(), ast_waitfor_n_fd(), ast_waitfordigit_full(), conf_run(), find_cache(), run_agi(), and waitstream_core().
01670 { 01671 struct timeval start = { 0 , 0 }; 01672 struct pollfd *pfds = NULL; 01673 int res; 01674 long rms; 01675 int x, y, max; 01676 int sz; 01677 time_t now = 0; 01678 long whentohangup = 0, diff; 01679 struct ast_channel *winner = NULL; 01680 struct fdmap { 01681 int chan; 01682 int fdno; 01683 } *fdmap = NULL; 01684 01685 if ((sz = n * AST_MAX_FDS + nfds)) { 01686 pfds = alloca(sizeof(*pfds) * sz); 01687 fdmap = alloca(sizeof(*fdmap) * sz); 01688 } 01689 01690 if (outfd) 01691 *outfd = -99999; 01692 if (exception) 01693 *exception = 0; 01694 01695 /* Perform any pending masquerades */ 01696 for (x=0; x < n; x++) { 01697 ast_channel_lock(c[x]); 01698 if (c[x]->masq) { 01699 if (ast_do_masquerade(c[x])) { 01700 ast_log(LOG_WARNING, "Masquerade failed\n"); 01701 *ms = -1; 01702 ast_channel_unlock(c[x]); 01703 return NULL; 01704 } 01705 } 01706 if (c[x]->whentohangup) { 01707 if (!whentohangup) 01708 time(&now); 01709 diff = c[x]->whentohangup - now; 01710 if (diff < 1) { 01711 /* Should already be hungup */ 01712 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01713 ast_channel_unlock(c[x]); 01714 return c[x]; 01715 } 01716 if (!whentohangup || (diff < whentohangup)) 01717 whentohangup = diff; 01718 } 01719 ast_channel_unlock(c[x]); 01720 } 01721 /* Wait full interval */ 01722 rms = *ms; 01723 if (whentohangup) { 01724 rms = whentohangup * 1000; /* timeout in milliseconds */ 01725 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01726 rms = *ms; 01727 } 01728 /* 01729 * Build the pollfd array, putting the channels' fds first, 01730 * followed by individual fds. Order is important because 01731 * individual fd's must have priority over channel fds. 01732 */ 01733 max = 0; 01734 for (x=0; x<n; x++) { 01735 for (y=0; y<AST_MAX_FDS; y++) { 01736 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01737 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01738 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01739 } 01740 CHECK_BLOCKING(c[x]); 01741 } 01742 /* Add the individual fds */ 01743 for (x=0; x<nfds; x++) { 01744 fdmap[max].chan = -1; 01745 max += ast_add_fd(&pfds[max], fds[x]); 01746 } 01747 01748 if (*ms > 0) 01749 start = ast_tvnow(); 01750 01751 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01752 do { 01753 int kbrms = rms; 01754 if (kbrms > 600000) 01755 kbrms = 600000; 01756 res = poll(pfds, max, kbrms); 01757 if (!res) 01758 rms -= kbrms; 01759 } while (!res && (rms > 0)); 01760 } else { 01761 res = poll(pfds, max, rms); 01762 } 01763 for (x=0; x<n; x++) 01764 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01765 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01766 if (errno != EINTR) 01767 *ms = -1; 01768 return NULL; 01769 } 01770 if (whentohangup) { /* if we have a timeout, check who expired */ 01771 time(&now); 01772 for (x=0; x<n; x++) { 01773 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01774 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01775 if (winner == NULL) 01776 winner = c[x]; 01777 } 01778 } 01779 } 01780 if (res == 0) { /* no fd ready, reset timeout and done */ 01781 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01782 return winner; 01783 } 01784 /* 01785 * Then check if any channel or fd has a pending event. 01786 * Remember to check channels first and fds last, as they 01787 * must have priority on setting 'winner' 01788 */ 01789 for (x = 0; x < max; x++) { 01790 res = pfds[x].revents; 01791 if (res == 0) 01792 continue; 01793 if (fdmap[x].chan >= 0) { /* this is a channel */ 01794 winner = c[fdmap[x].chan]; /* override previous winners */ 01795 if (res & POLLPRI) 01796 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01797 else 01798 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01799 winner->fdno = fdmap[x].fdno; 01800 } else { /* this is an fd */ 01801 if (outfd) 01802 *outfd = pfds[x].fd; 01803 if (exception) 01804 *exception = (res & POLLPRI) ? -1 : 0; 01805 winner = NULL; 01806 } 01807 } 01808 if (*ms > 0) { 01809 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01810 if (*ms < 0) 01811 *ms = 0; 01812 } 01813 return winner; 01814 }
int ast_waitfordigit | ( | struct ast_channel * | c, | |
int | ms | |||
) |
Waits for a digit.
!
c | channel to wait for a digit on | |
ms | how many milliseconds to wait |
Definition at line 1832 of file channel.c.
References ast_waitfordigit_full().
Referenced by _while_exec(), advanced_options(), ast_adsi_get_cpeid(), ast_adsi_get_cpeinfo(), ast_adsi_print(), ast_adsi_read_encoded_dtmf(), ast_adsi_transmit_message_full(), ast_app_dtget(), ast_control_streamfile(), ast_record_review(), collect_digits(), common_exec(), cpeid_exec(), dialout(), directory_exec(), do_atxfer(), forward_message(), get_folder(), ivr_dispatch(), mgcp_ss(), my_getsigstr(), pbx_builtin_waitexten(), play_mailbox_owner(), play_record_review(), read_exec(), read_newoption(), retrydial_exec(), sendnoise(), ss_thread(), testclient_exec(), testserver_exec(), vm_execmain(), vm_forwardoptions(), vm_instructions(), vm_options(), vm_tempgreeting(), wait_a_bit(), and wait_our_turn().
01833 { 01834 return ast_waitfordigit_full(c, ms, -1, -1); 01835 }
int ast_waitfordigit_full | ( | struct ast_channel * | c, | |
int | ms, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Wait for a digit Same as ast_waitfordigit() with audio fd for outputting read audio and ctrlfd to monitor for reading.
c | channel to wait for a digit on | |
ms | how many milliseconds to wait | |
audiofd | audio file descriptor to write to if audio frames are received | |
ctrlfd | control file descriptor to monitor for reading |
Definition at line 1856 of file channel.c.
References ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_FLAG_END_DTMF_ONLY, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_VOICE, ast_frfree, ast_log(), ast_read(), ast_set_flag, ast_test_flag, ast_waitfor_nandfds(), errno, and f.
Referenced by ast_readstring_full(), ast_waitfordigit(), handle_getoption(), and handle_waitfordigit().
01857 { 01858 /* Stop if we're a zombie or need a soft hangup */ 01859 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 01860 return -1; 01861 01862 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 01863 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 01864 01865 /* Wait for a digit, no more than ms milliseconds total. */ 01866 while (ms) { 01867 struct ast_channel *rchan; 01868 int outfd; 01869 01870 errno = 0; 01871 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 01872 if (!rchan && outfd < 0 && ms) { 01873 if (errno == 0 || errno == EINTR) 01874 continue; 01875 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 01876 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01877 return -1; 01878 } else if (outfd > -1) { 01879 /* The FD we were watching has something waiting */ 01880 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01881 return 1; 01882 } else if (rchan) { 01883 int res; 01884 struct ast_frame *f = ast_read(c); 01885 if (!f) 01886 return -1; 01887 01888 switch(f->frametype) { 01889 case AST_FRAME_DTMF_BEGIN: 01890 break; 01891 case AST_FRAME_DTMF_END: 01892 res = f->subclass; 01893 ast_frfree(f); 01894 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01895 return res; 01896 case AST_FRAME_CONTROL: 01897 switch(f->subclass) { 01898 case AST_CONTROL_HANGUP: 01899 ast_frfree(f); 01900 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01901 return -1; 01902 case AST_CONTROL_RINGING: 01903 case AST_CONTROL_ANSWER: 01904 case AST_CONTROL_SRCUPDATE: 01905 /* Unimportant */ 01906 break; 01907 default: 01908 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 01909 break; 01910 } 01911 break; 01912 case AST_FRAME_VOICE: 01913 /* Write audio if appropriate */ 01914 if (audiofd > -1) { 01915 if (write(audiofd, f->data, f->datalen) < 0) { 01916 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 01917 } 01918 } 01919 default: 01920 /* Ignore */ 01921 break; 01922 } 01923 ast_frfree(f); 01924 } 01925 } 01926 01927 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01928 01929 return 0; /* Time is up */ 01930 }
struct ast_channel* ast_walk_channel_by_exten_locked | ( | const struct ast_channel * | chan, | |
const char * | exten, | |||
const char * | context | |||
) |
Get next channel by exten (and optionally context) and lock it.
Definition at line 1166 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01168 { 01169 return channel_find_locked(chan, NULL, 0, context, exten); 01170 }
struct ast_channel* ast_walk_channel_by_name_prefix_locked | ( | const struct ast_channel * | chan, | |
const char * | name, | |||
const int | namelen | |||
) |
Get channel by name prefix (locks channel).
Definition at line 1153 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01155 { 01156 return channel_find_locked(chan, name, namelen, NULL, NULL); 01157 }
int ast_write | ( | struct ast_channel * | chan, | |
struct ast_frame * | frame | |||
) |
Write a frame to a channel This function writes the given frame to the indicated channel.
chan | destination channel of the frame | |
frame | frame that will be written |
Definition at line 2723 of file channel.c.
References ast_channel::_softhangup, AST_AUDIOHOOK_DIRECTION_WRITE, ast_audiohook_write_list(), ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_UNHOLD, ast_deactivate_generator(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_WRITE_INT, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_MODEM, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, ast_log(), AST_MONITOR_RUNNING, ast_seekstream(), ast_senddigit_begin(), ast_senddigit_end(), AST_SOFTHANGUP_DEV, ast_test_flag, ast_translate(), ast_writestream(), ast_channel::audiohooks, CHECK_BLOCKING, ast_frame::data, ast_frame::datalen, DEBUGCHAN_FLAG, f, ast_channel::fout, FRAMECOUNT_INC, ast_frame::frametype, ast_channel::generatordata, ast_channel_tech::indicate, ast_channel::insmpl, ast_frame::len, LOG_DEBUG, ast_channel::masq, ast_channel::masqr, ast_channel::monitor, MONITOR_DELAY, ast_channel::name, option_debug, ast_channel::outsmpl, ast_channel::rawwriteformat, SEEK_FORCECUR, ast_channel_tech::send_html, ast_channel_tech::send_text, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel_tech::write, ast_channel_monitor::write_stream, ast_channel_tech::write_video, and ast_channel::writetrans.
Referenced by adsi_careful_send(), agent_write(), ast_prod(), ast_readaudio_callback(), ast_readvideo_callback(), ast_udptl_bridge(), ast_write_video(), bridge_native_loop(), conf_queue_dtmf(), conf_run(), dahdi_bridge(), dictate_exec(), echo_exec(), features_write(), function_ilink(), gen_generate(), handle_link_data(), jb_get_and_deliver(), linear_generator(), milliwatt_generate(), misdn_bridge(), moh_files_generator(), moh_generate(), mp3_exec(), NBScat_exec(), rpt(), send_link_dtmf(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), spy_generate(), and wait_for_answer().
02724 { 02725 int res = -1; 02726 int count = 0; 02727 struct ast_frame *f = NULL, *f2 = NULL; 02728 02729 /*Deadlock avoidance*/ 02730 while(ast_channel_trylock(chan)) { 02731 /*cannot goto done since the channel is not locked*/ 02732 if(count++ > 10) { 02733 if(option_debug) 02734 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 02735 return 0; 02736 } 02737 usleep(1); 02738 } 02739 /* Stop if we're a zombie or need a soft hangup */ 02740 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02741 goto done; 02742 02743 /* Handle any pending masquerades */ 02744 if (chan->masq && ast_do_masquerade(chan)) { 02745 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02746 goto done; 02747 } 02748 if (chan->masqr) { 02749 res = 0; /* XXX explain, why 0 ? */ 02750 goto done; 02751 } 02752 if (chan->generatordata) { 02753 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02754 ast_deactivate_generator(chan); 02755 else { 02756 if (fr->frametype == AST_FRAME_DTMF_END) { 02757 /* There is a generator running while we're in the middle of a digit. 02758 * It's probably inband DTMF, so go ahead and pass it so it can 02759 * stop the generator */ 02760 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02761 ast_channel_unlock(chan); 02762 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02763 ast_channel_lock(chan); 02764 CHECK_BLOCKING(chan); 02765 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 02766 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 02767 res = (chan->tech->indicate == NULL) ? 0 : 02768 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02769 } 02770 res = 0; /* XXX explain, why 0 ? */ 02771 goto done; 02772 } 02773 } 02774 /* High bit prints debugging */ 02775 if (chan->fout & DEBUGCHAN_FLAG) 02776 ast_frame_dump(chan->name, fr, ">>"); 02777 CHECK_BLOCKING(chan); 02778 switch(fr->frametype) { 02779 case AST_FRAME_CONTROL: 02780 res = (chan->tech->indicate == NULL) ? 0 : 02781 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02782 break; 02783 case AST_FRAME_DTMF_BEGIN: 02784 if (chan->audiohooks) { 02785 struct ast_frame *old_frame = fr; 02786 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02787 if (old_frame != fr) 02788 f = fr; 02789 } 02790 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02791 ast_channel_unlock(chan); 02792 res = ast_senddigit_begin(chan, fr->subclass); 02793 ast_channel_lock(chan); 02794 CHECK_BLOCKING(chan); 02795 break; 02796 case AST_FRAME_DTMF_END: 02797 if (chan->audiohooks) { 02798 struct ast_frame *old_frame = fr; 02799 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02800 if (old_frame != fr) 02801 f = fr; 02802 } 02803 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02804 ast_channel_unlock(chan); 02805 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02806 ast_channel_lock(chan); 02807 CHECK_BLOCKING(chan); 02808 break; 02809 case AST_FRAME_TEXT: 02810 res = (chan->tech->send_text == NULL) ? 0 : 02811 chan->tech->send_text(chan, (char *) fr->data); 02812 break; 02813 case AST_FRAME_HTML: 02814 res = (chan->tech->send_html == NULL) ? 0 : 02815 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02816 break; 02817 case AST_FRAME_VIDEO: 02818 /* XXX Handle translation of video codecs one day XXX */ 02819 res = (chan->tech->write_video == NULL) ? 0 : 02820 chan->tech->write_video(chan, fr); 02821 break; 02822 case AST_FRAME_MODEM: 02823 res = (chan->tech->write == NULL) ? 0 : 02824 chan->tech->write(chan, fr); 02825 break; 02826 case AST_FRAME_VOICE: 02827 if (chan->tech->write == NULL) 02828 break; /*! \todo XXX should return 0 maybe ? */ 02829 02830 if (chan->audiohooks) { 02831 struct ast_frame *old_frame = fr; 02832 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02833 if (old_frame != fr) 02834 f2 = fr; 02835 } 02836 02837 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02838 if (fr->subclass == chan->rawwriteformat) 02839 f = fr; 02840 else 02841 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02842 02843 /* If we have no frame of audio, then we have to bail out */ 02844 if (!f) { 02845 res = 0; 02846 break; 02847 } 02848 02849 /* If Monitor is running on this channel, then we have to write frames out there too */ 02850 if (chan->monitor && chan->monitor->write_stream) { 02851 /* XXX must explain this code */ 02852 #ifndef MONITOR_CONSTANT_DELAY 02853 int jump = chan->insmpl - chan->outsmpl - 4 * f->samples; 02854 if (jump >= 0) { 02855 jump = chan->insmpl - chan->outsmpl; 02856 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 02857 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02858 chan->outsmpl += jump + f->samples; 02859 } else 02860 chan->outsmpl += f->samples; 02861 #else 02862 int jump = chan->insmpl - chan->outsmpl; 02863 if (jump - MONITOR_DELAY >= 0) { 02864 if (ast_seekstream(chan->monitor->write_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02865 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02866 chan->outsmpl += jump; 02867 } else 02868 chan->outsmpl += f->samples; 02869 #endif 02870 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02871 if (ast_writestream(chan->monitor->write_stream, f) < 0) 02872 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 02873 } 02874 } 02875 02876 if (f) 02877 res = chan->tech->write(chan,f); 02878 else 02879 res = 0; 02880 break; 02881 case AST_FRAME_NULL: 02882 case AST_FRAME_IAX: 02883 /* Ignore these */ 02884 res = 0; 02885 break; 02886 default: 02887 /* At this point, fr is the incoming frame and f is NULL. Channels do 02888 * not expect to get NULL as a frame pointer and will segfault. Hence, 02889 * we output the original frame passed in. */ 02890 res = chan->tech->write(chan, fr); 02891 break; 02892 } 02893 02894 if (f && f != fr) 02895 ast_frfree(f); 02896 if (f2) 02897 ast_frfree(f2); 02898 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02899 /* Consider a write failure to force a soft hangup */ 02900 if (res < 0) 02901 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02902 else { 02903 chan->fout = FRAMECOUNT_INC(chan->fout); 02904 } 02905 done: 02906 ast_channel_unlock(chan); 02907 return res; 02908 }
int ast_write_video | ( | struct ast_channel * | chan, | |
struct ast_frame * | frame | |||
) |
Write video frame to a channel This function writes the given frame to the indicated channel.
chan | destination channel of the frame | |
frame | frame that will be written |
Definition at line 2712 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02713 { 02714 int res; 02715 if (!chan->tech->write_video) 02716 return 0; 02717 res = ast_write(chan, fr); 02718 if (!res) 02719 res = 1; 02720 return res; 02721 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 3856 of file channel.c.
References ast_autoservice_start(), ast_autoservice_stop(), AST_DIGIT_ANY, ast_say_number(), ast_stream_and_wait(), and ast_channel::language.
Referenced by ast_channel_bridge().
03857 { 03858 int min = 0, sec = 0, check; 03859 03860 check = ast_autoservice_start(peer); 03861 if (check) 03862 return; 03863 03864 if (remain > 0) { 03865 if (remain / 60 > 1) { 03866 min = remain / 60; 03867 sec = remain % 60; 03868 } else { 03869 sec = remain; 03870 } 03871 } 03872 03873 if (!strcmp(sound,"timeleft")) { /* Queue support */ 03874 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 03875 if (min) { 03876 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 03877 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 03878 } 03879 if (sec) { 03880 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 03881 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 03882 } 03883 } else { 03884 ast_stream_and_wait(chan, sound, chan->language, ""); 03885 } 03886 03887 ast_autoservice_stop(peer); 03888 }
static struct ast_channel* channel_find_locked | ( | const struct ast_channel * | prev, | |
const char * | name, | |||
const int | namelen, | |||
const char * | context, | |||
const char * | exten | |||
) | [static] |
Helper function to find channels.
It supports these modes:
prev != NULL : get channel next in list after prev name != NULL : get channel with matching name name != NULL && namelen != 0 : get channel whose name starts with prefix exten != NULL : get channel whose exten or macroexten matches context != NULL && exten != NULL : get channel whose context or macrocontext
It returns with the channel's lock held. If getting the individual lock fails, unlock and retry quickly up to 10 times, then give up.
XXX also note that accessing fields (e.g. c->name in ast_log()) can only be done with the lock held or someone could delete the object while we work on it. This causes some ugliness in the code. Note that removing the first ast_log() may be harmful, as it would shorten the retry period and possibly cause failures. We should definitely go for a better scheme that is deadlock-free.
Definition at line 1049 of file channel.c.
References ast_channel_trylock, AST_LIST_LOCK, AST_LIST_NEXT, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel::context, ast_channel::exten, LOG_DEBUG, ast_channel::macrocontext, ast_channel::macroexten, ast_channel::name, and option_debug.
Referenced by ast_channel_walk_locked(), ast_get_channel_by_exten_locked(), ast_get_channel_by_name_locked(), ast_get_channel_by_name_prefix_locked(), ast_walk_channel_by_exten_locked(), and ast_walk_channel_by_name_prefix_locked().
01052 { 01053 const char *msg = prev ? "deadlock" : "initial deadlock"; 01054 int retries; 01055 struct ast_channel *c; 01056 const struct ast_channel *_prev = prev; 01057 01058 for (retries = 0; retries < 200; retries++) { 01059 int done; 01060 /* Reset prev on each retry. See note below for the reason. */ 01061 prev = _prev; 01062 AST_LIST_LOCK(&channels); 01063 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01064 if (prev) { /* look for last item, first, before any evaluation */ 01065 if (c != prev) /* not this one */ 01066 continue; 01067 /* found, prepare to return c->next */ 01068 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01069 /*!\note 01070 * We're done searching through the list for the previous item. 01071 * Any item after this point, we want to evaluate for a match. 01072 * If we didn't set prev to NULL here, then we would only 01073 * return matches for the first matching item (since the above 01074 * "if (c != prev)" would not permit any other potential 01075 * matches to reach the additional matching logic, below). 01076 * Instead, it would just iterate until it once again found the 01077 * original match, then iterate down to the end of the list and 01078 * quit. 01079 */ 01080 prev = NULL; 01081 } 01082 if (name) { /* want match by name */ 01083 if ((!namelen && strcasecmp(c->name, name)) || 01084 (namelen && strncasecmp(c->name, name, namelen))) 01085 continue; /* name match failed */ 01086 } else if (exten) { 01087 if (context && strcasecmp(c->context, context) && 01088 strcasecmp(c->macrocontext, context)) 01089 continue; /* context match failed */ 01090 if (strcasecmp(c->exten, exten) && 01091 strcasecmp(c->macroexten, exten)) 01092 continue; /* exten match failed */ 01093 } 01094 /* if we get here, c points to the desired record */ 01095 break; 01096 } 01097 /* exit if chan not found or mutex acquired successfully */ 01098 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01099 done = c == NULL || ast_channel_trylock(c) == 0; 01100 if (!done) { 01101 if (option_debug) 01102 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01103 if (retries == 199) { 01104 /* We are about to fail due to a deadlock, so report this 01105 * while we still have the list lock. 01106 */ 01107 if (option_debug) 01108 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01109 /* As we have deadlocked, we will skip this channel and 01110 * see if there is another match. 01111 * NOTE: No point doing this for a full-name match, 01112 * as there can be no more matches. 01113 */ 01114 if (!(name && !namelen)) { 01115 prev = c; 01116 retries = -1; 01117 } 01118 } 01119 } 01120 AST_LIST_UNLOCK(&channels); 01121 if (done) 01122 return c; 01123 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01124 * starting from the beginning of the list we can restore our saved pointer to the previous 01125 * channel and start from there. 01126 */ 01127 prev = _prev; 01128 usleep(1); /* give other threads a chance before retrying */ 01129 } 01130 01131 return NULL; 01132 }
const char* channelreloadreason2txt | ( | enum channelreloadreason | reason | ) |
Convert enum channelreloadreason to text string for manager event.
\ brief Convert channel reloadreason (ENUM) to text string for manager event
Definition at line 4686 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
04687 { 04688 switch (reason) { 04689 case CHANNEL_MODULE_LOAD: 04690 return "LOAD (Channel module load)"; 04691 04692 case CHANNEL_MODULE_RELOAD: 04693 return "RELOAD (Channel module reload)"; 04694 04695 case CHANNEL_CLI_RELOAD: 04696 return "CLIRELOAD (Channel module reload by CLI command)"; 04697 04698 default: 04699 return "MANAGERRELOAD (Channel module reload by manager)"; 04700 } 04701 };
static void clone_variables | ( | struct ast_channel * | original, | |
struct ast_channel * | clone | |||
) | [static] |
Clone channel variables from 'clone' channel into 'original' channel.
All variables except those related to app_groupcount are cloned. Variables are actually _removed_ from 'clone' channel, presumably because it will subsequently be destroyed.
Definition at line 3483 of file channel.c.
References AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_var_assign(), ast_var_t::entries, ast_var_t::name, ast_var_t::value, and ast_channel::varshead.
Referenced by ast_do_masquerade().
03484 { 03485 struct ast_var_t *current, *newvar; 03486 /* Append variables from clone channel into original channel */ 03487 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03488 if (AST_LIST_FIRST(&clone->varshead)) 03489 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03490 03491 /* then, dup the varshead list into the clone */ 03492 03493 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 03494 newvar = ast_var_assign(current->name, current->value); 03495 if (newvar) 03496 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 03497 } 03498 }
static char* complete_channeltypes | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 334 of file channel.c.
References AST_LIST_TRAVERSE, chanlist::list, strdup, chanlist::tech, and ast_channel_tech::type.
00335 { 00336 struct chanlist *cl; 00337 int which = 0; 00338 int wordlen; 00339 char *ret = NULL; 00340 00341 if (pos != 3) 00342 return NULL; 00343 00344 wordlen = strlen(word); 00345 00346 AST_LIST_TRAVERSE(&backends, cl, list) { 00347 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00348 ret = strdup(cl->tech->type); 00349 break; 00350 } 00351 } 00352 00353 return ret; 00354 }
static char* complete_channeltypes_deprecated | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 312 of file channel.c.
References AST_LIST_TRAVERSE, chanlist::list, strdup, chanlist::tech, and ast_channel_tech::type.
00313 { 00314 struct chanlist *cl; 00315 int which = 0; 00316 int wordlen; 00317 char *ret = NULL; 00318 00319 if (pos != 2) 00320 return NULL; 00321 00322 wordlen = strlen(word); 00323 00324 AST_LIST_TRAVERSE(&backends, cl, list) { 00325 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00326 ret = strdup(cl->tech->type); 00327 break; 00328 } 00329 } 00330 00331 return ret; 00332 }
static void free_cid | ( | struct ast_callerid * | cid | ) | [static] |
Definition at line 1199 of file channel.c.
References ast_callerid::cid_ani, ast_callerid::cid_dnid, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_rdnis, and free.
Referenced by ast_channel_free().
01200 { 01201 if (cid->cid_dnid) 01202 free(cid->cid_dnid); 01203 if (cid->cid_num) 01204 free(cid->cid_num); 01205 if (cid->cid_name) 01206 free(cid->cid_name); 01207 if (cid->cid_ani) 01208 free(cid->cid_ani); 01209 if (cid->cid_rdnis) 01210 free(cid->cid_rdnis); 01211 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1446 of file channel.c.
References ast_translator_free_path(), ast_channel::nativeformats, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readtrans, and ast_channel::writetrans.
Referenced by ast_do_masquerade(), and ast_hangup().
01447 { 01448 if (clone->writetrans) 01449 ast_translator_free_path(clone->writetrans); 01450 if (clone->readtrans) 01451 ast_translator_free_path(clone->readtrans); 01452 clone->writetrans = NULL; 01453 clone->readtrans = NULL; 01454 clone->rawwriteformat = clone->nativeformats; 01455 clone->rawreadformat = clone->nativeformats; 01456 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1601 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), AST_FORMAT_AUDIO_MASK, ast_format_rate(), ast_log(), LOG_DEBUG, and option_debug.
Referenced by ast_activate_generator(), and ast_read_generator_actions().
01602 { 01603 /* Called if generator doesn't have data */ 01604 void *tmp; 01605 int res; 01606 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01607 struct ast_channel *chan = (struct ast_channel *)data; 01608 01609 ast_channel_lock(chan); 01610 tmp = chan->generatordata; 01611 chan->generatordata = NULL; 01612 if (chan->generator) 01613 generate = chan->generator->generate; 01614 ast_channel_unlock(chan); 01615 01616 if (!tmp || !generate) 01617 return 0; 01618 01619 res = generate(chan, tmp, 0, ast_format_rate(chan->writeformat & AST_FORMAT_AUDIO_MASK) / 50); 01620 01621 chan->generatordata = tmp; 01622 01623 if (res) { 01624 if (option_debug) 01625 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01626 ast_deactivate_generator(chan); 01627 } 01628 01629 return 0; 01630 }
static int attribute_const is_visible_indication | ( | enum ast_control_frame_type | condition | ) | [static] |
Definition at line 2447 of file channel.c.
References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, and AST_CONTROL_WINK.
Referenced by ast_indicate_data().
02448 { 02449 /* Don't include a default case here so that we get compiler warnings 02450 * when a new type is added. */ 02451 02452 switch (condition) { 02453 case AST_CONTROL_PROGRESS: 02454 case AST_CONTROL_PROCEEDING: 02455 case AST_CONTROL_VIDUPDATE: 02456 case AST_CONTROL_SRCUPDATE: 02457 case AST_CONTROL_RADIO_KEY: 02458 case AST_CONTROL_RADIO_UNKEY: 02459 case AST_CONTROL_OPTION: 02460 case AST_CONTROL_WINK: 02461 case AST_CONTROL_FLASH: 02462 case AST_CONTROL_OFFHOOK: 02463 case AST_CONTROL_TAKEOFFHOOK: 02464 case AST_CONTROL_ANSWER: 02465 case AST_CONTROL_HANGUP: 02466 return 0; 02467 02468 case AST_CONTROL_CONGESTION: 02469 case AST_CONTROL_BUSY: 02470 case AST_CONTROL_RINGING: 02471 case AST_CONTROL_RING: 02472 case AST_CONTROL_HOLD: 02473 case AST_CONTROL_UNHOLD: 02474 return 1; 02475 } 02476 02477 return 0; 02478 }
static void queue_dtmf_readq | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [inline, static] |
Definition at line 1986 of file channel.c.
References AST_FRAME_DTMF_END, ast_queue_frame(), ast_channel::dtmff, f, ast_frame::frametype, ast_frame::len, and ast_frame::subclass.
Referenced by __ast_read().
01987 { 01988 struct ast_frame *fr = &chan->dtmff; 01989 01990 fr->frametype = AST_FRAME_DTMF_END; 01991 fr->subclass = f->subclass; 01992 fr->len = f->len; 01993 01994 /* The only time this function will be called is for a frame that just came 01995 * out of the channel driver. So, we want to stick it on the tail of the 01996 * readq. */ 01997 01998 ast_queue_frame(chan, fr); 01999 }
static int set_format | ( | struct ast_channel * | chan, | |
int | fmt, | |||
int * | rawformat, | |||
int * | format, | |||
struct ast_trans_pvt ** | trans, | |||
const int | direction | |||
) | [static] |
Definition at line 2910 of file channel.c.
References ast_channel_lock, ast_channel_unlock, AST_FORMAT_AUDIO_MASK, ast_getformatname(), ast_getformatname_multiple(), ast_log(), ast_translator_best_choice(), ast_translator_build_path(), ast_translator_free_path(), LOG_DEBUG, ast_channel::name, ast_channel::nativeformats, and option_debug.
Referenced by ast_set_read_format(), and ast_set_write_format().
02912 { 02913 int native; 02914 int res; 02915 char from[200], to[200]; 02916 02917 /* Make sure we only consider audio */ 02918 fmt &= AST_FORMAT_AUDIO_MASK; 02919 02920 native = chan->nativeformats; 02921 /* Find a translation path from the native format to one of the desired formats */ 02922 if (!direction) 02923 /* reading */ 02924 res = ast_translator_best_choice(&fmt, &native); 02925 else 02926 /* writing */ 02927 res = ast_translator_best_choice(&native, &fmt); 02928 02929 if (res < 0) { 02930 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 02931 ast_getformatname_multiple(from, sizeof(from), native), 02932 ast_getformatname_multiple(to, sizeof(to), fmt)); 02933 return -1; 02934 } 02935 02936 /* Now we have a good choice for both. */ 02937 ast_channel_lock(chan); 02938 02939 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 02940 /* the channel is already in these formats, so nothing to do */ 02941 ast_channel_unlock(chan); 02942 return 0; 02943 } 02944 02945 *rawformat = native; 02946 /* User perspective is fmt */ 02947 *format = fmt; 02948 /* Free any read translation we have right now */ 02949 if (*trans) 02950 ast_translator_free_path(*trans); 02951 /* Build a translation path from the raw format to the desired format */ 02952 if (!direction) 02953 /* reading */ 02954 *trans = ast_translator_build_path(*format, *rawformat); 02955 else 02956 /* writing */ 02957 *trans = ast_translator_build_path(*rawformat, *format); 02958 ast_channel_unlock(chan); 02959 if (option_debug) 02960 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 02961 direction ? "write" : "read", ast_getformatname(fmt)); 02962 return 0; 02963 }
static int should_skip_dtmf | ( | struct ast_channel * | chan | ) | [inline, static] |
Determine whether or not we should ignore DTMF in the readq.
Definition at line 2004 of file channel.c.
References AST_FLAG_DEFER_DTMF, AST_FLAG_EMULATE_DTMF, AST_MIN_DTMF_GAP, ast_test_flag, ast_tvdiff_ms(), ast_tvnow(), ast_tvzero(), and ast_channel::dtmf_tv.
Referenced by __ast_read().
02005 { 02006 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF)) { 02007 /* We're in the middle of emulating a digit, or DTMF has been 02008 * explicitly deferred. Skip this digit, then. */ 02009 return 1; 02010 } 02011 02012 if (!ast_tvzero(chan->dtmf_tv) && 02013 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02014 /* We're not in the middle of a digit, but it hasn't been long enough 02015 * since the last digit, so we'll have to skip DTMF for now. */ 02016 return 1; 02017 } 02018 02019 return 0; 02020 }
static int show_channeltype | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 259 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, ast_channel_tech::devicestate, ast_channel_tech::indicate, chanlist::list, LOG_WARNING, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, ast_channel_tech::send_digit_begin, ast_channel_tech::send_digit_end, ast_channel_tech::send_html, ast_channel_tech::send_image, ast_channel_tech::send_text, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00260 { 00261 struct chanlist *cl = NULL; 00262 00263 if (argc != 4) 00264 return RESULT_SHOWUSAGE; 00265 00266 if (AST_LIST_LOCK(&channels)) { 00267 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00268 return RESULT_FAILURE; 00269 } 00270 00271 AST_LIST_TRAVERSE(&backends, cl, list) { 00272 if (!strncasecmp(cl->tech->type, argv[3], strlen(cl->tech->type))) { 00273 break; 00274 } 00275 } 00276 00277 00278 if (!cl) { 00279 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]); 00280 AST_LIST_UNLOCK(&channels); 00281 return RESULT_FAILURE; 00282 } 00283 00284 ast_cli(fd, 00285 "-- Info about channel driver: %s --\n" 00286 " Device State: %s\n" 00287 " Indication: %s\n" 00288 " Transfer : %s\n" 00289 " Capabilities: %d\n" 00290 " Digit Begin: %s\n" 00291 " Digit End: %s\n" 00292 " Send HTML : %s\n" 00293 " Image Support: %s\n" 00294 " Text Support: %s\n", 00295 cl->tech->type, 00296 (cl->tech->devicestate) ? "yes" : "no", 00297 (cl->tech->indicate) ? "yes" : "no", 00298 (cl->tech->transfer) ? "yes" : "no", 00299 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00300 (cl->tech->send_digit_begin) ? "yes" : "no", 00301 (cl->tech->send_digit_end) ? "yes" : "no", 00302 (cl->tech->send_html) ? "yes" : "no", 00303 (cl->tech->send_image) ? "yes" : "no", 00304 (cl->tech->send_text) ? "yes" : "no" 00305 00306 ); 00307 00308 AST_LIST_UNLOCK(&channels); 00309 return RESULT_SUCCESS; 00310 }
static int show_channeltype_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 206 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, ast_channel_tech::devicestate, ast_channel_tech::indicate, chanlist::list, LOG_WARNING, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, ast_channel_tech::send_digit_begin, ast_channel_tech::send_digit_end, ast_channel_tech::send_html, ast_channel_tech::send_image, ast_channel_tech::send_text, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00207 { 00208 struct chanlist *cl = NULL; 00209 00210 if (argc != 3) 00211 return RESULT_SHOWUSAGE; 00212 00213 if (AST_LIST_LOCK(&channels)) { 00214 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00215 return RESULT_FAILURE; 00216 } 00217 00218 AST_LIST_TRAVERSE(&backends, cl, list) { 00219 if (!strncasecmp(cl->tech->type, argv[2], strlen(cl->tech->type))) { 00220 break; 00221 } 00222 } 00223 00224 00225 if (!cl) { 00226 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[2]); 00227 AST_LIST_UNLOCK(&channels); 00228 return RESULT_FAILURE; 00229 } 00230 00231 ast_cli(fd, 00232 "-- Info about channel driver: %s --\n" 00233 " Device State: %s\n" 00234 " Indication: %s\n" 00235 " Transfer : %s\n" 00236 " Capabilities: %d\n" 00237 " Digit Begin: %s\n" 00238 " Digit End: %s\n" 00239 " Send HTML : %s\n" 00240 " Image Support: %s\n" 00241 " Text Support: %s\n", 00242 cl->tech->type, 00243 (cl->tech->devicestate) ? "yes" : "no", 00244 (cl->tech->indicate) ? "yes" : "no", 00245 (cl->tech->transfer) ? "yes" : "no", 00246 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00247 (cl->tech->send_digit_begin) ? "yes" : "no", 00248 (cl->tech->send_digit_end) ? "yes" : "no", 00249 (cl->tech->send_html) ? "yes" : "no", 00250 (cl->tech->send_image) ? "yes" : "no", 00251 (cl->tech->send_text) ? "yes" : "no" 00252 00253 ); 00254 00255 AST_LIST_UNLOCK(&channels); 00256 return RESULT_SUCCESS; 00257 }
static int show_channeltypes | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 179 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::description, ast_channel_tech::devicestate, FORMAT, ast_channel_tech::indicate, chanlist::list, LOG_WARNING, RESULT_SUCCESS, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00180 { 00181 #define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" 00182 struct chanlist *cl; 00183 int count_chan = 0; 00184 00185 ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer"); 00186 ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------"); 00187 if (AST_LIST_LOCK(&channels)) { 00188 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00189 return -1; 00190 } 00191 AST_LIST_TRAVERSE(&backends, cl, list) { 00192 ast_cli(fd, FORMAT, cl->tech->type, cl->tech->description, 00193 (cl->tech->devicestate) ? "yes" : "no", 00194 (cl->tech->indicate) ? "yes" : "no", 00195 (cl->tech->transfer) ? "yes" : "no"); 00196 count_chan++; 00197 } 00198 AST_LIST_UNLOCK(&channels); 00199 ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan); 00200 return RESULT_SUCCESS; 00201 00202 #undef FORMAT 00203 00204 }
static void* silence_generator_alloc | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static int silence_generator_generate | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4618 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04619 { 04620 short buf[samples]; 04621 struct ast_frame frame = { 04622 .frametype = AST_FRAME_VOICE, 04623 .subclass = AST_FORMAT_SLINEAR, 04624 .data = buf, 04625 .samples = samples, 04626 .datalen = sizeof(buf), 04627 }; 04628 memset(buf, 0, sizeof(buf)); 04629 if (ast_write(chan, &frame)) 04630 return -1; 04631 return 0; 04632 }
static void silence_generator_release | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static void state2str_threadbuf_init | ( | void | ) | [static] |
static void* tonepair_alloc | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4371 of file channel.c.
References ast_calloc, AST_FLAG_WRITE_INT, AST_FORMAT_SLINEAR, ast_log(), ast_set_flag, ast_set_write_format(), tonepair_def::duration, tonepair_def::freq1, tonepair_def::freq2, ast_channel::name, tonepair_release(), tonepair_def::vol, and ast_channel::writeformat.
04372 { 04373 struct tonepair_state *ts; 04374 struct tonepair_def *td = params; 04375 04376 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04377 return NULL; 04378 ts->origwfmt = chan->writeformat; 04379 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04380 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04381 tonepair_release(NULL, ts); 04382 ts = NULL; 04383 } else { 04384 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04385 ts->v1_1 = 0; 04386 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04387 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04388 ts->v2_1 = 0; 04389 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04390 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04391 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04392 ts->duration = td->duration; 04393 ts->modulate = 0; 04394 } 04395 /* Let interrupts interrupt :) */ 04396 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04397 return ts; 04398 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4400 of file channel.c.
References ast_log(), tonepair_state::data, tonepair_state::f, tonepair_state::fac1, tonepair_state::fac2, tonepair_state::modulate, tonepair_state::v1_1, tonepair_state::v1_2, tonepair_state::v2_1, tonepair_state::v2_2, tonepair_state::v3_1, and tonepair_state::v3_2.
04401 { 04402 struct tonepair_state *ts = data; 04403 int x; 04404 04405 /* we need to prepare a frame with 16 * timelen samples as we're 04406 * generating SLIN audio 04407 */ 04408 len = samples * 2; 04409 04410 if (len > sizeof(ts->data) / 2 - 1) { 04411 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04412 return -1; 04413 } 04414 memset(&ts->f, 0, sizeof(ts->f)); 04415 for (x=0;x<len/2;x++) { 04416 ts->v1_1 = ts->v2_1; 04417 ts->v2_1 = ts->v3_1; 04418 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04419 04420 ts->v1_2 = ts->v2_2; 04421 ts->v2_2 = ts->v3_2; 04422 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04423 if (ts->modulate) { 04424 int p; 04425 p = ts->v3_2 - 32768; 04426 if (p < 0) p = -p; 04427 p = ((p * 9) / 10) + 1; 04428 ts->data[x] = (ts->v3_1 * p) >> 15; 04429 } else 04430 ts->data[x] = ts->v3_1 + ts->v3_2; 04431 } 04432 ts->f.frametype = AST_FRAME_VOICE; 04433 ts->f.subclass = AST_FORMAT_SLINEAR; 04434 ts->f.datalen = len; 04435 ts->f.samples = samples; 04436 ts->f.offset = AST_FRIENDLY_OFFSET; 04437 ts->f.data = ts->data; 04438 ast_write(chan, &ts->f); 04439 ts->pos += x; 04440 if (ts->duration > 0) { 04441 if (ts->pos >= ts->duration * 8) 04442 return -1; 04443 } 04444 return 0; 04445 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4362 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04363 { 04364 struct tonepair_state *ts = params; 04365 04366 if (chan) 04367 ast_set_write_format(chan, ts->origwfmt); 04368 free(ts); 04369 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4523 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_cleanup(), and ast_uninstall_music_functions().
int(*) ast_moh_start_ptr(struct ast_channel *, const char *, const char *) = NULL [static] |
Definition at line 4521 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_start(), and ast_uninstall_music_functions().
void(*) ast_moh_stop_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4522 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_stop(), and ast_uninstall_music_functions().
map AST_CAUSE's to readable string representations
Referenced by ast_cause2str(), ast_str2cause(), and dump_cause().
struct ast_cli_entry cli_channel[] [static] |
struct ast_cli_entry cli_show_channeltype_deprecated [static] |
Initial value:
{ { "show", "channeltype", NULL }, show_channeltype_deprecated, NULL, NULL, complete_channeltypes_deprecated }
struct ast_cli_entry cli_show_channeltypes_deprecated [static] |
Initial value:
{ { "show", "channeltypes", NULL }, show_channeltypes, NULL, NULL }
unsigned long global_fin |
unsigned long global_fout |
struct ast_channel_tech null_tech [static] |
char show_channeltype_usage[] [static] |
char show_channeltypes_usage[] [static] |
int shutting_down [static] |
struct ast_generator silence_generator [static] |
Initial value:
{ .alloc = silence_generator_alloc, .release = silence_generator_release, .generate = silence_generator_generate, }
Definition at line 4634 of file channel.c.
Referenced by ast_channel_start_silence_generator().
struct ast_threadstorage state2str_threadbuf = { .once = PTHREAD_ONCE_INIT , .key_init = state2str_threadbuf_init , } [static] |
struct ast_generator tonepair [static] |
Initial value:
{ alloc: tonepair_alloc, release: tonepair_release, generate: tonepair_generator, }
Definition at line 4447 of file channel.c.
Referenced by ast_tonepair_start().