#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 <sys/ioctl.h>
#include "asterisk/dahdi_compat.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, struct ast_frame *after) |
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. | |
ast_channel * | ast_call_forward (struct ast_channel *caller, struct ast_channel *orig, int *timeout, int format, struct outgoing_helper *oh, int *outstate) |
Forwards a call to a new channel specified by the original channel's call_forward str. If possible, the new forwarded channel is created and returned while the original one is terminated. | |
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 one or more frames to a channel's frame queue. | |
int | ast_queue_frame_head (struct ast_channel *chan, struct ast_frame *fin) |
Queue one or more frames to the head of a channel's 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 void | handle_cause (int cause, int *outstate) |
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 void | report_new_callerid (const struct ast_channel *chan) |
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) |
static void | update_bridgepeer (struct ast_channel *c0, struct ast_channel *c1) |
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_CONSTANT_DELAY |
#define MONITOR_DELAY 150 * 8 |
#define STATE2STR_BUFSIZE 32 |
static int __ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin, | |||
int | head, | |||
struct ast_frame * | after | |||
) | [static] |
Definition at line 896 of file channel.c.
References ast_channel::alertpipe, ast_channel_lock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FLAG_BLOCKING, AST_FRAME_CONTROL, AST_FRAME_VOICE, ast_frdup(), ast_frfree, AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_HEAD_NOLOCK, AST_LIST_INSERT_LIST_AFTER, AST_LIST_INSERT_TAIL, AST_LIST_LAST, AST_LIST_NEXT, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_log(), ast_test_flag, ast_channel::blocker, errno, f, ast_frame::frame_list, frames, ast_frame::frametype, ast_channel::name, ast_channel::readq, ast_frame::subclass, and ast_channel::timingfd.
Referenced by __ast_read(), ast_queue_frame(), and ast_queue_frame_head().
00897 { 00898 struct ast_frame *f; 00899 struct ast_frame *cur; 00900 int blah = 1; 00901 unsigned int new_frames = 0; 00902 unsigned int new_voice_frames = 0; 00903 unsigned int queued_frames = 0; 00904 unsigned int queued_voice_frames = 0; 00905 AST_LIST_HEAD_NOLOCK(, ast_frame) frames; 00906 00907 ast_channel_lock(chan); 00908 00909 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00910 if ((cur = AST_LIST_LAST(&chan->readq)) && 00911 (cur->frametype == AST_FRAME_CONTROL) && 00912 (cur->subclass == AST_CONTROL_HANGUP)) { 00913 ast_channel_unlock(chan); 00914 return 0; 00915 } 00916 00917 /* Build copies of all the frames and count them */ 00918 AST_LIST_HEAD_INIT_NOLOCK(&frames); 00919 for (cur = fin; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 00920 if (!(f = ast_frdup(cur))) { 00921 ast_frfree(AST_LIST_FIRST(&frames)); 00922 return -1; 00923 } 00924 00925 AST_LIST_INSERT_TAIL(&frames, f, frame_list); 00926 new_frames++; 00927 if (f->frametype == AST_FRAME_VOICE) { 00928 new_voice_frames++; 00929 } 00930 } 00931 00932 /* Count how many frames exist on the queue */ 00933 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00934 queued_frames++; 00935 if (cur->frametype == AST_FRAME_VOICE) { 00936 queued_voice_frames++; 00937 } 00938 } 00939 00940 if ((queued_frames + new_frames) > 128) { 00941 ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name); 00942 while ((f = AST_LIST_REMOVE_HEAD(&frames, frame_list))) { 00943 ast_frfree(f); 00944 } 00945 ast_channel_unlock(chan); 00946 return 0; 00947 } 00948 00949 if ((queued_voice_frames + new_voice_frames) > 96) { 00950 ast_log(LOG_WARNING, "Exceptionally long voice queue length queuing to %s\n", chan->name); 00951 while ((f = AST_LIST_REMOVE_HEAD(&frames, frame_list))) { 00952 ast_frfree(f); 00953 } 00954 ast_channel_unlock(chan); 00955 return 0; 00956 } 00957 00958 if (after) { 00959 AST_LIST_INSERT_LIST_AFTER(&chan->readq, &frames, after, frame_list); 00960 } else { 00961 if (head) { 00962 AST_LIST_APPEND_LIST(&frames, &chan->readq, frame_list); 00963 AST_LIST_HEAD_INIT_NOLOCK(&chan->readq); 00964 } 00965 AST_LIST_APPEND_LIST(&chan->readq, &frames, frame_list); 00966 } 00967 00968 if (chan->alertpipe[1] > -1) { 00969 if (write(chan->alertpipe[1], &blah, new_frames * sizeof(blah)) != (new_frames * sizeof(blah))) { 00970 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s (qlen = %d): %s!\n", 00971 chan->name, queued_frames, strerror(errno)); 00972 } 00973 #ifdef HAVE_DAHDI 00974 } else if (chan->timingfd > -1) { 00975 while (new_frames--) { 00976 ioctl(chan->timingfd, DAHDI_TIMERPING, &blah); 00977 } 00978 #endif 00979 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00980 pthread_kill(chan->blocker, SIGURG); 00981 } 00982 00983 ast_channel_unlock(chan); 00984 00985 return 0; 00986 }
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 2050 of file channel.c.
References __ast_queue_frame(), 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_LAST, 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_queue_frame(), ast_queue_frame_head(), 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_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().
02051 { 02052 struct ast_frame *f = NULL; /* the return value */ 02053 int blah; 02054 int prestate; 02055 int count = 0; 02056 02057 /* this function is very long so make sure there is only one return 02058 * point at the end (there are only two exceptions to this). 02059 */ 02060 while(ast_channel_trylock(chan)) { 02061 if(count++ > 10) 02062 /*cannot goto done since the channel is not locked*/ 02063 return &ast_null_frame; 02064 usleep(1); 02065 } 02066 02067 if (chan->masq) { 02068 if (ast_do_masquerade(chan)) 02069 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02070 else 02071 f = &ast_null_frame; 02072 goto done; 02073 } 02074 02075 /* Stop if we're a zombie or need a soft hangup */ 02076 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02077 if (chan->generator) 02078 ast_deactivate_generator(chan); 02079 goto done; 02080 } 02081 02082 if (chan->fdno == -1) { 02083 #ifdef AST_DEVMODE 02084 ast_log(LOG_ERROR, "ast_read() called with no recorded file descriptor.\n"); 02085 #else 02086 if (option_debug > 1) { 02087 ast_log(LOG_DEBUG, "ast_read() called with no recorded file descriptor.\n"); 02088 } 02089 #endif 02090 f = &ast_null_frame; 02091 goto done; 02092 } 02093 prestate = chan->_state; 02094 02095 /* Read and ignore anything on the alertpipe, but read only 02096 one sizeof(blah) per frame that we send from it */ 02097 if (chan->alertpipe[0] > -1) { 02098 int flags = fcntl(chan->alertpipe[0], F_GETFL); 02099 /* For some odd reason, the alertpipe occasionally loses nonblocking status, 02100 * which immediately causes a deadlock scenario. Detect and prevent this. */ 02101 if ((flags & O_NONBLOCK) == 0) { 02102 ast_log(LOG_ERROR, "Alertpipe on channel %s lost O_NONBLOCK?!!\n", chan->name); 02103 if (fcntl(chan->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 02104 ast_log(LOG_WARNING, "Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 02105 f = &ast_null_frame; 02106 goto done; 02107 } 02108 } 02109 if (read(chan->alertpipe[0], &blah, sizeof(blah)) < 0) { 02110 if (errno != EINTR && errno != EAGAIN) 02111 ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno)); 02112 } 02113 } 02114 02115 #ifdef HAVE_DAHDI 02116 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02117 int res; 02118 02119 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02120 blah = -1; 02121 /* IF we can't get event, assume it's an expired as-per the old interface */ 02122 res = ioctl(chan->timingfd, DAHDI_GETEVENT, &blah); 02123 if (res) 02124 blah = DAHDI_EVENT_TIMER_EXPIRED; 02125 02126 if (blah == DAHDI_EVENT_TIMER_PING) { 02127 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02128 /* Acknowledge PONG unless we need it again */ 02129 if (ioctl(chan->timingfd, DAHDI_TIMERPONG, &blah)) { 02130 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02131 } 02132 } 02133 } else if (blah == DAHDI_EVENT_TIMER_EXPIRED) { 02134 ioctl(chan->timingfd, DAHDI_TIMERACK, &blah); 02135 if (chan->timingfunc) { 02136 /* save a copy of func/data before unlocking the channel */ 02137 int (*func)(const void *) = chan->timingfunc; 02138 void *data = chan->timingdata; 02139 chan->fdno = -1; 02140 ast_channel_unlock(chan); 02141 func(data); 02142 } else { 02143 blah = 0; 02144 ioctl(chan->timingfd, DAHDI_TIMERCONFIG, &blah); 02145 chan->timingdata = NULL; 02146 chan->fdno = -1; 02147 ast_channel_unlock(chan); 02148 } 02149 /* cannot 'goto done' because the channel is already unlocked */ 02150 return &ast_null_frame; 02151 } else 02152 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02153 } else 02154 #endif 02155 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02156 /* if the AST_GENERATOR_FD is set, call the generator with args 02157 * set to -1 so it can do whatever it needs to. 02158 */ 02159 void *tmp = chan->generatordata; 02160 chan->generatordata = NULL; /* reset to let ast_write get through */ 02161 chan->generator->generate(chan, tmp, -1, -1); 02162 chan->generatordata = tmp; 02163 f = &ast_null_frame; 02164 chan->fdno = -1; 02165 goto done; 02166 } 02167 02168 /* Check for pending read queue */ 02169 if (!AST_LIST_EMPTY(&chan->readq)) { 02170 int skip_dtmf = should_skip_dtmf(chan); 02171 02172 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->readq, f, frame_list) { 02173 /* We have to be picky about which frame we pull off of the readq because 02174 * there are cases where we want to leave DTMF frames on the queue until 02175 * some later time. */ 02176 02177 if ( (f->frametype == AST_FRAME_DTMF_BEGIN || f->frametype == AST_FRAME_DTMF_END) && skip_dtmf) { 02178 continue; 02179 } 02180 02181 AST_LIST_REMOVE_CURRENT(&chan->readq, frame_list); 02182 break; 02183 } 02184 AST_LIST_TRAVERSE_SAFE_END; 02185 02186 if (!f) { 02187 /* There were no acceptable frames on the readq. */ 02188 f = &ast_null_frame; 02189 if (chan->alertpipe[0] > -1) { 02190 int poke = 0; 02191 /* Restore the state of the alertpipe since we aren't ready for any 02192 * of the frames in the readq. */ 02193 if (write(chan->alertpipe[1], &poke, sizeof(poke)) != sizeof(poke)) { 02194 ast_log(LOG_ERROR, "Failed to write to alertpipe: %s\n", strerror(errno)); 02195 } 02196 } 02197 } 02198 02199 /* Interpret hangup and return NULL */ 02200 /* XXX why not the same for frames from the channel ? */ 02201 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02202 ast_frfree(f); 02203 f = NULL; 02204 } 02205 } else { 02206 chan->blocker = pthread_self(); 02207 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02208 if (chan->tech->exception) 02209 f = chan->tech->exception(chan); 02210 else { 02211 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02212 f = &ast_null_frame; 02213 } 02214 /* Clear the exception flag */ 02215 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02216 } else if (chan->tech->read) 02217 f = chan->tech->read(chan); 02218 else 02219 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02220 } 02221 02222 /* 02223 * Reset the recorded file descriptor that triggered this read so that we can 02224 * easily detect when ast_read() is called without properly using ast_waitfor(). 02225 */ 02226 chan->fdno = -1; 02227 02228 if (f) { 02229 struct ast_frame *readq_tail = AST_LIST_LAST(&chan->readq); 02230 02231 /* if the channel driver returned more than one frame, stuff the excess 02232 into the readq for the next ast_read call 02233 */ 02234 if (AST_LIST_NEXT(f, frame_list)) { 02235 ast_queue_frame(chan, AST_LIST_NEXT(f, frame_list)); 02236 ast_frfree(AST_LIST_NEXT(f, frame_list)); 02237 AST_LIST_NEXT(f, frame_list) = NULL; 02238 } 02239 02240 switch (f->frametype) { 02241 case AST_FRAME_CONTROL: 02242 if (f->subclass == AST_CONTROL_ANSWER) { 02243 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02244 if (option_debug) 02245 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02246 ast_frfree(f); 02247 f = &ast_null_frame; 02248 } else if (prestate == AST_STATE_UP) { 02249 if (option_debug) 02250 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02251 ast_frfree(f); 02252 f = &ast_null_frame; 02253 } else { 02254 /* Answer the CDR */ 02255 ast_setstate(chan, AST_STATE_UP); 02256 /* removed a call to ast_cdr_answer(chan->cdr) from here. */ 02257 } 02258 } 02259 break; 02260 case AST_FRAME_DTMF_END: 02261 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02262 /* Queue it up if DTMF is deferred, or if DTMF emulation is forced. */ 02263 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02264 queue_dtmf_readq(chan, f); 02265 ast_frfree(f); 02266 f = &ast_null_frame; 02267 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02268 if (!ast_tvzero(chan->dtmf_tv) && 02269 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02270 /* If it hasn't been long enough, defer this digit */ 02271 queue_dtmf_readq(chan, f); 02272 ast_frfree(f); 02273 f = &ast_null_frame; 02274 } else { 02275 /* There was no begin, turn this into a begin and send the end later */ 02276 f->frametype = AST_FRAME_DTMF_BEGIN; 02277 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02278 chan->emulate_dtmf_digit = f->subclass; 02279 chan->dtmf_tv = ast_tvnow(); 02280 if (f->len) { 02281 if (f->len > AST_MIN_DTMF_DURATION) 02282 chan->emulate_dtmf_duration = f->len; 02283 else 02284 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02285 } else 02286 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02287 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02288 } 02289 if (chan->audiohooks) { 02290 struct ast_frame *old_frame = f; 02291 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02292 if (old_frame != f) 02293 ast_frfree(old_frame); 02294 } 02295 } else { 02296 struct timeval now = ast_tvnow(); 02297 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02298 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02299 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02300 if (!f->len) 02301 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02302 } else if (!f->len) { 02303 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02304 f->len = AST_MIN_DTMF_DURATION; 02305 } 02306 if (f->len < AST_MIN_DTMF_DURATION && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02307 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); 02308 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02309 chan->emulate_dtmf_digit = f->subclass; 02310 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02311 ast_frfree(f); 02312 f = &ast_null_frame; 02313 } else { 02314 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02315 if (f->len < AST_MIN_DTMF_DURATION) { 02316 f->len = AST_MIN_DTMF_DURATION; 02317 } 02318 chan->dtmf_tv = now; 02319 } 02320 if (chan->audiohooks) { 02321 struct ast_frame *old_frame = f; 02322 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02323 if (old_frame != f) 02324 ast_frfree(old_frame); 02325 } 02326 } 02327 break; 02328 case AST_FRAME_DTMF_BEGIN: 02329 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02330 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 02331 (!ast_tvzero(chan->dtmf_tv) && 02332 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02333 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02334 ast_frfree(f); 02335 f = &ast_null_frame; 02336 } else { 02337 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02338 chan->dtmf_tv = ast_tvnow(); 02339 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02340 } 02341 break; 02342 case AST_FRAME_NULL: 02343 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02344 * is reached , because we want to make sure we pass at least one 02345 * voice frame through before starting the next digit, to ensure a gap 02346 * between DTMF digits. */ 02347 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02348 struct timeval now = ast_tvnow(); 02349 if (!chan->emulate_dtmf_duration) { 02350 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02351 chan->emulate_dtmf_digit = 0; 02352 } else if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02353 chan->emulate_dtmf_duration = 0; 02354 ast_frfree(f); 02355 f = &chan->dtmff; 02356 f->frametype = AST_FRAME_DTMF_END; 02357 f->subclass = chan->emulate_dtmf_digit; 02358 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02359 chan->dtmf_tv = now; 02360 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02361 chan->emulate_dtmf_digit = 0; 02362 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 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 } 02370 } 02371 } 02372 break; 02373 case AST_FRAME_VOICE: 02374 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02375 * is reached , because we want to make sure we pass at least one 02376 * voice frame through before starting the next digit, to ensure a gap 02377 * between DTMF digits. */ 02378 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02379 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02380 chan->emulate_dtmf_digit = 0; 02381 } 02382 02383 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02384 if (dropaudio) 02385 ast_read_generator_actions(chan, f); 02386 ast_frfree(f); 02387 f = &ast_null_frame; 02388 } 02389 02390 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02391 struct timeval now = ast_tvnow(); 02392 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02393 chan->emulate_dtmf_duration = 0; 02394 ast_frfree(f); 02395 f = &chan->dtmff; 02396 f->frametype = AST_FRAME_DTMF_END; 02397 f->subclass = chan->emulate_dtmf_digit; 02398 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02399 chan->dtmf_tv = now; 02400 if (chan->audiohooks) { 02401 struct ast_frame *old_frame = f; 02402 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02403 if (old_frame != f) 02404 ast_frfree(old_frame); 02405 } 02406 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02407 } else { 02408 /* Drop voice frames while we're still in the middle of the digit */ 02409 ast_frfree(f); 02410 f = &ast_null_frame; 02411 } 02412 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02413 /* This frame is not one of the current native formats -- drop it on the floor */ 02414 char to[200]; 02415 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02416 chan->name, ast_getformatname(f->subclass), ast_getformatname_multiple(to, sizeof(to), chan->nativeformats)); 02417 ast_frfree(f); 02418 f = &ast_null_frame; 02419 } else if ((f->frametype == AST_FRAME_VOICE)) { 02420 if (chan->audiohooks) { 02421 struct ast_frame *old_frame = f; 02422 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02423 if (old_frame != f) 02424 ast_frfree(old_frame); 02425 } 02426 if (chan->monitor && chan->monitor->read_stream ) { 02427 /* XXX what does this do ? */ 02428 #ifndef MONITOR_CONSTANT_DELAY 02429 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02430 if (jump >= 0) { 02431 jump = chan->outsmpl - chan->insmpl; 02432 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02433 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02434 chan->insmpl += jump + f->samples; 02435 } else 02436 chan->insmpl+= f->samples; 02437 #else 02438 int jump = chan->outsmpl - chan->insmpl; 02439 if (jump - MONITOR_DELAY >= 0) { 02440 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02441 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02442 chan->insmpl += jump; 02443 } else 02444 chan->insmpl += f->samples; 02445 #endif 02446 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02447 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02448 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02449 } 02450 } 02451 02452 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) { 02453 f = &ast_null_frame; 02454 } 02455 02456 /* it is possible for the translation process on chan->readtrans to have 02457 produced multiple frames from the single input frame we passed it; if 02458 this happens, queue the additional frames *before* the frames we may 02459 have queued earlier. if the readq was empty, put them at the head of 02460 the queue, and if it was not, put them just after the frame that was 02461 at the end of the queue. 02462 */ 02463 if (AST_LIST_NEXT(f, frame_list)) { 02464 if (!readq_tail) { 02465 ast_queue_frame_head(chan, AST_LIST_NEXT(f, frame_list)); 02466 } else { 02467 __ast_queue_frame(chan, AST_LIST_NEXT(f, frame_list), 0, readq_tail); 02468 } 02469 ast_frfree(AST_LIST_NEXT(f, frame_list)); 02470 AST_LIST_NEXT(f, frame_list) = NULL; 02471 } 02472 02473 /* Run generator sitting on the line if timing device not available 02474 * and synchronous generation of outgoing frames is necessary */ 02475 ast_read_generator_actions(chan, f); 02476 } 02477 default: 02478 /* Just pass it on! */ 02479 break; 02480 } 02481 } else { 02482 /* Make sure we always return NULL in the future */ 02483 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02484 if (chan->generator) 02485 ast_deactivate_generator(chan); 02486 /* We no longer End the CDR here */ 02487 } 02488 02489 /* High bit prints debugging */ 02490 if (chan->fin & DEBUGCHAN_FLAG) 02491 ast_frame_dump(chan->name, f, "<<"); 02492 chan->fin = FRAMECOUNT_INC(chan->fin); 02493 02494 done: 02495 ast_channel_unlock(chan); 02496 return f; 02497 }
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 3204 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), ast_call_forward(), AST_CAUSE_NO_ANSWER, ast_cdr_alloc(), ast_cdr_answer(), ast_cdr_busy(), ast_cdr_disposition(), ast_cdr_end(), ast_cdr_failed(), AST_CDR_FLAG_ORIGINATED, 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_flag, ast_set_variables(), AST_STATE_UP, ast_strlen_zero(), ast_waitfor(), ast_channel::call_forward, ast_channel::cdr, outgoing_helper::cid_name, outgoing_helper::cid_num, outgoing_helper::context, ast_channel::context, outgoing_helper::exten, ast_channel::exten, f, handle_cause(), 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().
03205 { 03206 int dummy_outstate; 03207 int cause = 0; 03208 struct ast_channel *chan; 03209 int res = 0; 03210 int last_subclass = 0; 03211 03212 if (outstate) 03213 *outstate = 0; 03214 else 03215 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 03216 03217 chan = ast_request(type, format, data, &cause); 03218 if (!chan) { 03219 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 03220 handle_cause(cause, outstate); 03221 return NULL; 03222 } 03223 03224 if (oh) { 03225 if (oh->vars) 03226 ast_set_variables(chan, oh->vars); 03227 /* XXX why is this necessary, for the parent_channel perhaps ? */ 03228 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 03229 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 03230 if (oh->parent_channel) 03231 ast_channel_inherit_variables(oh->parent_channel, chan); 03232 if (oh->account) 03233 ast_cdr_setaccount(chan, oh->account); 03234 } 03235 ast_set_callerid(chan, cid_num, cid_name, cid_num); 03236 ast_set_flag(chan->cdr, AST_CDR_FLAG_ORIGINATED); 03237 03238 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 03239 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 03240 } else { 03241 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 03242 while (timeout && chan->_state != AST_STATE_UP) { 03243 struct ast_frame *f; 03244 res = ast_waitfor(chan, timeout); 03245 if (res <= 0) /* error, timeout, or done */ 03246 break; 03247 if (timeout > -1) 03248 timeout = res; 03249 if (!ast_strlen_zero(chan->call_forward)) { 03250 if (!(chan = ast_call_forward(NULL, chan, &timeout, format, oh, outstate))) { 03251 return NULL; 03252 } 03253 continue; 03254 } 03255 03256 f = ast_read(chan); 03257 if (!f) { 03258 *outstate = AST_CONTROL_HANGUP; 03259 res = 0; 03260 break; 03261 } 03262 if (f->frametype == AST_FRAME_CONTROL) { 03263 switch (f->subclass) { 03264 case AST_CONTROL_RINGING: /* record but keep going */ 03265 *outstate = f->subclass; 03266 break; 03267 03268 case AST_CONTROL_BUSY: 03269 ast_cdr_busy(chan->cdr); 03270 *outstate = f->subclass; 03271 timeout = 0; 03272 break; 03273 03274 case AST_CONTROL_CONGESTION: 03275 ast_cdr_failed(chan->cdr); 03276 *outstate = f->subclass; 03277 timeout = 0; 03278 break; 03279 03280 case AST_CONTROL_ANSWER: 03281 ast_cdr_answer(chan->cdr); 03282 *outstate = f->subclass; 03283 timeout = 0; /* trick to force exit from the while() */ 03284 break; 03285 03286 /* Ignore these */ 03287 case AST_CONTROL_PROGRESS: 03288 case AST_CONTROL_PROCEEDING: 03289 case AST_CONTROL_HOLD: 03290 case AST_CONTROL_UNHOLD: 03291 case AST_CONTROL_VIDUPDATE: 03292 case AST_CONTROL_SRCUPDATE: 03293 case -1: /* Ignore -- just stopping indications */ 03294 break; 03295 03296 default: 03297 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 03298 } 03299 last_subclass = f->subclass; 03300 } 03301 ast_frfree(f); 03302 } 03303 } 03304 03305 /* Final fixups */ 03306 if (oh) { 03307 if (!ast_strlen_zero(oh->context)) 03308 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 03309 if (!ast_strlen_zero(oh->exten)) 03310 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 03311 if (oh->priority) 03312 chan->priority = oh->priority; 03313 } 03314 if (chan->_state == AST_STATE_UP) 03315 *outstate = AST_CONTROL_ANSWER; 03316 03317 if (res <= 0) { 03318 if ( AST_CONTROL_RINGING == last_subclass ) 03319 chan->hangupcause = AST_CAUSE_NO_ANSWER; 03320 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 03321 ast_cdr_init(chan->cdr, chan); 03322 if (chan->cdr) { 03323 char tmp[256]; 03324 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 03325 ast_cdr_setapp(chan->cdr,"Dial",tmp); 03326 ast_cdr_update(chan); 03327 ast_cdr_start(chan->cdr); 03328 ast_cdr_end(chan->cdr); 03329 /* If the cause wasn't handled properly */ 03330 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 03331 ast_cdr_failed(chan->cdr); 03332 } 03333 ast_hangup(chan); 03334 chan = NULL; 03335 } 03336 return chan; 03337 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1658 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().
01659 { 01660 int res = 0; 01661 01662 ast_channel_lock(chan); 01663 01664 if (chan->generatordata) { 01665 if (chan->generator && chan->generator->release) 01666 chan->generator->release(chan, chan->generatordata); 01667 chan->generatordata = NULL; 01668 } 01669 01670 ast_prod(chan); 01671 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01672 res = -1; 01673 } 01674 01675 if (!res) { 01676 ast_settimeout(chan, 160, generator_force, chan); 01677 chan->generator = gen; 01678 } 01679 01680 ast_channel_unlock(chan); 01681 01682 return res; 01683 }
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 1579 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().
01580 { 01581 int res = 0; 01582 ast_channel_lock(chan); 01583 /* You can't answer an outbound call */ 01584 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01585 ast_channel_unlock(chan); 01586 return 0; 01587 } 01588 /* Stop if we're a zombie or need a soft hangup */ 01589 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01590 ast_channel_unlock(chan); 01591 return -1; 01592 } 01593 switch(chan->_state) { 01594 case AST_STATE_RINGING: 01595 case AST_STATE_RING: 01596 if (chan->tech->answer) 01597 res = chan->tech->answer(chan); 01598 ast_setstate(chan, AST_STATE_UP); 01599 ast_cdr_answer(chan->cdr); 01600 break; 01601 case AST_STATE_UP: 01602 break; 01603 default: 01604 break; 01605 } 01606 ast_indicate(chan, -1); 01607 chan->visible_indication = 0; 01608 ast_channel_unlock(chan); 01609 return res; 01610 }
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 4082 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(), sip_set_rtp_peer(), socket_process(), ss_thread(), start_spying(), and startmon().
04083 { 04084 struct ast_channel *bridged; 04085 bridged = chan->_bridge; 04086 if (bridged && bridged->tech->bridged_channel) 04087 bridged = bridged->tech->bridged_channel(chan, bridged); 04088 return bridged; 04089 }
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 3394 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_call_forward(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), connect_link(), do_idle_thread(), features_call(), findmeexec(), ring_entry(), rpt(), and wait_for_answer().
03395 { 03396 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03397 If the remote end does not answer within the timeout, then do NOT hang up, but 03398 return anyway. */ 03399 int res = -1; 03400 /* Stop if we're a zombie or need a soft hangup */ 03401 ast_channel_lock(chan); 03402 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03403 if (chan->cdr) 03404 ast_set_flag(chan->cdr, AST_CDR_FLAG_DIALED); 03405 if (chan->tech->call) 03406 res = chan->tech->call(chan, addr, timeout); 03407 ast_set_flag(chan, AST_FLAG_OUTGOING); 03408 } 03409 ast_channel_unlock(chan); 03410 return res; 03411 }
struct ast_channel* ast_call_forward | ( | struct ast_channel * | caller, | |
struct ast_channel * | orig, | |||
int * | timeout, | |||
int | format, | |||
struct outgoing_helper * | oh, | |||
int * | outstate | |||
) |
Forwards a call to a new channel specified by the original channel's call_forward str. If possible, the new forwarded channel is created and returned while the original one is terminated.
caller | in channel that requested orig | |
orig | channel being replaced by the call forward channel | |
timeout | maximum amount of time to wait for setup of new forward channel | |
format | requested channel format | |
oh | outgoing helper used with original channel | |
outstate | reason why unsuccessful (if uncuccessful) |
Definition at line 3137 of file channel.c.
References outgoing_helper::account, accountcode, ast_channel::accountcode, ast_call(), ast_cdr_setaccount(), ast_channel_datastore_inherit(), ast_channel_inherit_variables(), ast_channel_lock, ast_channel_unlock, ast_copy_string(), ast_hangup(), ast_log(), ast_request(), ast_set_callerid(), ast_set_variables(), ast_string_field_set, ast_strlen_zero(), ast_channel::call_forward, ast_channel::cid, outgoing_helper::cid_name, ast_callerid::cid_name, outgoing_helper::cid_num, ast_callerid::cid_num, ast_channel::context, ast_channel::data, handle_cause(), LOG_NOTICE, outgoing_helper::parent_channel, pbx_builtin_getvar_helper(), S_OR, type, and outgoing_helper::vars.
Referenced by __ast_request_and_dial(), and ast_feature_request_and_dial().
03138 { 03139 char tmpchan[256]; 03140 struct ast_channel *new = NULL; 03141 char *data, *type; 03142 int cause = 0; 03143 03144 /* gather data and request the new forward channel */ 03145 ast_copy_string(tmpchan, orig->call_forward, sizeof(tmpchan)); 03146 if ((data = strchr(tmpchan, '/'))) { 03147 *data++ = '\0'; 03148 type = tmpchan; 03149 } else { 03150 const char *forward_context; 03151 ast_channel_lock(orig); 03152 forward_context = pbx_builtin_getvar_helper(orig, "FORWARD_CONTEXT"); 03153 snprintf(tmpchan, sizeof(tmpchan), "%s@%s", orig->call_forward, S_OR(forward_context, orig->context)); 03154 ast_channel_unlock(orig); 03155 data = tmpchan; 03156 type = "Local"; 03157 } 03158 if (!(new = ast_request(type, format, data, &cause))) { 03159 ast_log(LOG_NOTICE, "Unable to create channel for call forward to '%s/%s' (cause = %d)\n", type, data, cause); 03160 handle_cause(cause, outstate); 03161 ast_hangup(orig); 03162 return NULL; 03163 } 03164 03165 /* Copy/inherit important information into new channel */ 03166 if (oh) { 03167 if (oh->vars) { 03168 ast_set_variables(new, oh->vars); 03169 } 03170 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) { 03171 ast_set_callerid(new, oh->cid_num, oh->cid_name, oh->cid_num); 03172 } 03173 if (oh->parent_channel) { 03174 ast_channel_inherit_variables(oh->parent_channel, new); 03175 ast_channel_datastore_inherit(oh->parent_channel, new); 03176 } 03177 if (oh->account) { 03178 ast_cdr_setaccount(new, oh->account); 03179 } 03180 } else if (caller) { /* no outgoing helper so use caller if avaliable */ 03181 ast_channel_inherit_variables(caller, new); 03182 ast_channel_datastore_inherit(caller, new); 03183 } 03184 03185 ast_channel_lock(orig); 03186 ast_string_field_set(new, accountcode, orig->accountcode); 03187 if (!ast_strlen_zero(orig->cid.cid_num) && !ast_strlen_zero(new->cid.cid_name)) { 03188 ast_set_callerid(new, orig->cid.cid_num, orig->cid.cid_name, orig->cid.cid_num); 03189 } 03190 ast_channel_unlock(orig); 03191 03192 /* call new channel */ 03193 if ((*timeout = ast_call(new, data, 0))) { 03194 ast_log(LOG_NOTICE, "Unable to call forward to channel %s/%s\n", type, (char *)data); 03195 ast_hangup(orig); 03196 ast_hangup(new); 03197 return NULL; 03198 } 03199 ast_hangup(orig); 03200 03201 return new; 03202 }
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 3644 of file channel.c.
References ast_string_field_set, manager_event(), ast_channel::name, name, and ast_channel::uniqueid.
03645 { 03646 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03647 ast_string_field_set(chan, name, newname); 03648 }
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, HAVE_DAHDI, 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 4324 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_FEATURE_WARNING_ACTIVE, 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_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, ast_channel::readformat, ast_channel_tech::send_digit_begin, t, ast_channel::tech, ast_channel::uniqueid, update_bridgepeer(), VERBOSE_PREFIX_3, and ast_channel::writeformat.
Referenced by ast_bridge_call().
04326 { 04327 struct ast_channel *who = NULL; 04328 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04329 int nativefailed=0; 04330 int firstpass; 04331 int o0nativeformats; 04332 int o1nativeformats; 04333 long time_left_ms=0; 04334 char caller_warning = 0; 04335 char callee_warning = 0; 04336 04337 if (c0->_bridge) { 04338 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04339 c0->name, c0->_bridge->name); 04340 return -1; 04341 } 04342 if (c1->_bridge) { 04343 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04344 c1->name, c1->_bridge->name); 04345 return -1; 04346 } 04347 04348 /* Stop if we're a zombie or need a soft hangup */ 04349 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04350 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 04351 return -1; 04352 04353 *fo = NULL; 04354 firstpass = config->firstpass; 04355 config->firstpass = 0; 04356 04357 if (ast_tvzero(config->start_time)) 04358 config->start_time = ast_tvnow(); 04359 time_left_ms = config->timelimit; 04360 04361 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 04362 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 04363 04364 if (config->start_sound && firstpass) { 04365 if (caller_warning) 04366 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 04367 if (callee_warning) 04368 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 04369 } 04370 04371 /* Keep track of bridge */ 04372 c0->_bridge = c1; 04373 c1->_bridge = c0; 04374 04375 /* \todo XXX here should check that cid_num is not NULL */ 04376 manager_event(EVENT_FLAG_CALL, "Link", 04377 "Channel1: %s\r\n" 04378 "Channel2: %s\r\n" 04379 "Uniqueid1: %s\r\n" 04380 "Uniqueid2: %s\r\n" 04381 "CallerID1: %s\r\n" 04382 "CallerID2: %s\r\n", 04383 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04384 04385 o0nativeformats = c0->nativeformats; 04386 o1nativeformats = c1->nativeformats; 04387 04388 if (config->feature_timer && !ast_tvzero(config->nexteventts)) { 04389 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 04390 } else if (config->timelimit && firstpass) { 04391 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04392 if (caller_warning || callee_warning) 04393 config->nexteventts = ast_tvsub(config->nexteventts, ast_samp2tv(config->play_warning, 1000)); 04394 } 04395 04396 if (!c0->tech->send_digit_begin) 04397 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 04398 if (!c1->tech->send_digit_begin) 04399 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 04400 04401 /* Before we enter in and bridge these two together tell them both the source of audio has changed */ 04402 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04403 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04404 04405 for (/* ever */;;) { 04406 struct timeval now = { 0, }; 04407 int to; 04408 04409 to = -1; 04410 04411 if (!ast_tvzero(config->nexteventts)) { 04412 now = ast_tvnow(); 04413 to = ast_tvdiff_ms(config->nexteventts, now); 04414 if (to <= 0) { 04415 if (!config->timelimit) { 04416 res = AST_BRIDGE_COMPLETE; 04417 break; 04418 } 04419 to = 0; 04420 } 04421 } 04422 04423 if (config->timelimit) { 04424 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04425 if (time_left_ms < to) 04426 to = time_left_ms; 04427 04428 if (time_left_ms <= 0) { 04429 if (caller_warning && config->end_sound) 04430 bridge_playfile(c0, c1, config->end_sound, 0); 04431 if (callee_warning && config->end_sound) 04432 bridge_playfile(c1, c0, config->end_sound, 0); 04433 *fo = NULL; 04434 if (who) 04435 *rc = who; 04436 res = 0; 04437 break; 04438 } 04439 04440 if (!to) { 04441 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning && ast_test_flag(config, AST_FEATURE_WARNING_ACTIVE)) { 04442 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04443 if (caller_warning) 04444 bridge_playfile(c0, c1, config->warning_sound, t); 04445 if (callee_warning) 04446 bridge_playfile(c1, c0, config->warning_sound, t); 04447 } 04448 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04449 config->nexteventts = ast_tvadd(config->nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04450 else 04451 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04452 } 04453 ast_clear_flag(config, AST_FEATURE_WARNING_ACTIVE); 04454 } 04455 04456 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04457 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04458 c0->_softhangup = 0; 04459 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04460 c1->_softhangup = 0; 04461 c0->_bridge = c1; 04462 c1->_bridge = c0; 04463 if (option_debug) 04464 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04465 continue; 04466 } 04467 04468 /* Stop if we're a zombie or need a soft hangup */ 04469 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04470 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04471 *fo = NULL; 04472 if (who) 04473 *rc = who; 04474 res = 0; 04475 if (option_debug) 04476 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", 04477 c0->name, c1->name, 04478 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04479 ast_check_hangup(c0) ? "Yes" : "No", 04480 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04481 ast_check_hangup(c1) ? "Yes" : "No"); 04482 break; 04483 } 04484 04485 update_bridgepeer(c0, c1); 04486 04487 if (c0->tech->bridge && 04488 (config->timelimit == 0) && 04489 (c0->tech->bridge == c1->tech->bridge) && 04490 !nativefailed && !c0->monitor && !c1->monitor && 04491 !c0->audiohooks && !c1->audiohooks && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04492 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04493 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04494 /* Looks like they share a bridge method and nothing else is in the way */ 04495 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04496 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04497 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04498 /* \todo XXX here should check that cid_num is not NULL */ 04499 manager_event(EVENT_FLAG_CALL, "Unlink", 04500 "Channel1: %s\r\n" 04501 "Channel2: %s\r\n" 04502 "Uniqueid1: %s\r\n" 04503 "Uniqueid2: %s\r\n" 04504 "CallerID1: %s\r\n" 04505 "CallerID2: %s\r\n", 04506 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04507 if (option_debug) 04508 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04509 04510 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04511 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04512 04513 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04514 continue; 04515 04516 c0->_bridge = NULL; 04517 c1->_bridge = NULL; 04518 04519 return res; 04520 } else { 04521 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04522 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04523 } 04524 switch (res) { 04525 case AST_BRIDGE_RETRY: 04526 if (config->play_warning) { 04527 ast_set_flag(config, AST_FEATURE_WARNING_ACTIVE); 04528 } 04529 continue; 04530 default: 04531 if (option_verbose > 2) 04532 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04533 c0->name, c1->name); 04534 /* fallthrough */ 04535 case AST_BRIDGE_FAILED_NOWARN: 04536 nativefailed++; 04537 break; 04538 } 04539 } 04540 04541 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04542 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04543 !(c0->generator || c1->generator)) { 04544 if (ast_channel_make_compatible(c0, c1)) { 04545 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04546 /* \todo XXX here should check that cid_num is not NULL */ 04547 manager_event(EVENT_FLAG_CALL, "Unlink", 04548 "Channel1: %s\r\n" 04549 "Channel2: %s\r\n" 04550 "Uniqueid1: %s\r\n" 04551 "Uniqueid2: %s\r\n" 04552 "CallerID1: %s\r\n" 04553 "CallerID2: %s\r\n", 04554 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04555 return AST_BRIDGE_FAILED; 04556 } 04557 o0nativeformats = c0->nativeformats; 04558 o1nativeformats = c1->nativeformats; 04559 } 04560 04561 update_bridgepeer(c0, c1); 04562 04563 res = ast_generic_bridge(c0, c1, config, fo, rc, config->nexteventts); 04564 if (res != AST_BRIDGE_RETRY) { 04565 break; 04566 } else if (config->feature_timer) { 04567 /* feature timer expired but has not been updated, sending to ast_bridge_call to do so */ 04568 break; 04569 } 04570 } 04571 04572 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04573 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04574 04575 /* Now that we have broken the bridge the source will change yet again */ 04576 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04577 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04578 04579 c0->_bridge = NULL; 04580 c1->_bridge = NULL; 04581 04582 /* \todo XXX here should check that cid_num is not NULL */ 04583 manager_event(EVENT_FLAG_CALL, "Unlink", 04584 "Channel1: %s\r\n" 04585 "Channel2: %s\r\n" 04586 "Uniqueid1: %s\r\n" 04587 "Uniqueid2: %s\r\n" 04588 "CallerID1: %s\r\n" 04589 "CallerID2: %s\r\n", 04590 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04591 if (option_debug) 04592 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04593 04594 return res; 04595 }
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 1396 of file channel.c.
References AST_LIST_INSERT_HEAD, ast_channel::datastores, and ast_datastore::entry.
Referenced by _macro_exec(), add_features_datastores(), setup_chanspy_ds(), setup_inheritance_datastore(), setup_mixmonitor_ds(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01397 { 01398 int res = 0; 01399 01400 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01401 01402 return res; 01403 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1335 of file channel.c.
References ast_calloc, ast_strdup, and ast_datastore::info.
Referenced by _macro_exec(), add_features_datastores(), ast_channel_datastore_inherit(), setup_chanspy_ds(), setup_inheritance_datastore(), setup_mixmonitor_ds(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01336 { 01337 struct ast_datastore *datastore = NULL; 01338 01339 /* Make sure we at least have type so we can identify this */ 01340 if (info == NULL) { 01341 return NULL; 01342 } 01343 01344 /* Allocate memory for datastore and clear it */ 01345 datastore = ast_calloc(1, sizeof(*datastore)); 01346 if (datastore == NULL) { 01347 return NULL; 01348 } 01349 01350 datastore->info = info; 01351 01352 datastore->uid = ast_strdup(uid); 01353 01354 return datastore; 01355 }
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 1423 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(), add_features_datastores(), attended_transfer_occurred(), chanspy_ds_free(), do_atxfer(), do_parking_thread(), find_speech(), func_inheritance_write(), park_exec(), queue_transfer_fixup(), smdi_msg_read(), speech_background(), speech_destroy(), stop_mixmonitor_exec(), and try_calling().
01424 { 01425 struct ast_datastore *datastore = NULL; 01426 01427 if (info == NULL) 01428 return NULL; 01429 01430 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01431 if (datastore->info == info) { 01432 if (uid != NULL && datastore->uid != NULL) { 01433 if (!strcasecmp(uid, datastore->uid)) { 01434 /* Matched by type AND uid */ 01435 break; 01436 } 01437 } else { 01438 /* Matched by type at least */ 01439 break; 01440 } 01441 } 01442 } 01443 AST_LIST_TRAVERSE_SAFE_END 01444 01445 return datastore; 01446 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1357 of file channel.c.
References ast_datastore::data, ast_datastore_info::destroy, free, ast_datastore::info, and ast_datastore::uid.
Referenced by add_features_datastores(), ast_channel_free(), chanspy_ds_free(), setup_inheritance_datastore(), and try_calling().
01358 { 01359 int res = 0; 01360 01361 /* Using the destroy function (if present) destroy the data */ 01362 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01363 datastore->info->destroy(datastore->data); 01364 datastore->data = NULL; 01365 } 01366 01367 /* Free allocated UID memory */ 01368 if (datastore->uid != NULL) { 01369 free(datastore->uid); 01370 datastore->uid = NULL; 01371 } 01372 01373 /* Finally free memory used by ourselves */ 01374 free(datastore); 01375 01376 return res; 01377 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1379 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 ast_call_forward(), local_call(), and wait_for_answer().
01380 { 01381 struct ast_datastore *datastore = NULL, *datastore2; 01382 01383 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01384 if (datastore->inheritance > 0) { 01385 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01386 if (datastore2) { 01387 datastore2->data = datastore->info->duplicate ? datastore->info->duplicate(datastore->data) : NULL; 01388 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01389 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01390 } 01391 } 01392 } 01393 return 0; 01394 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1405 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().
01406 { 01407 struct ast_datastore *datastore2 = NULL; 01408 int res = -1; 01409 01410 /* Find our position and remove ourselves */ 01411 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01412 if (datastore2 == datastore) { 01413 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01414 res = 0; 01415 break; 01416 } 01417 } 01418 AST_LIST_TRAVERSE_SAFE_END 01419 01420 return res; 01421 }
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 1034 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
01035 { 01036 int pre = 0; 01037 01038 if (chan) { 01039 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 01040 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 01041 } 01042 return pre; 01043 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1241 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().
01242 { 01243 int fd; 01244 struct ast_var_t *vardata; 01245 struct ast_frame *f; 01246 struct varshead *headp; 01247 struct ast_datastore *datastore = NULL; 01248 char name[AST_CHANNEL_NAME], *dashptr; 01249 01250 headp=&chan->varshead; 01251 01252 AST_LIST_LOCK(&channels); 01253 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01254 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01255 } 01256 /* Lock and unlock the channel just to be sure nobody has it locked still 01257 due to a reference retrieved from the channel list. */ 01258 ast_channel_lock(chan); 01259 ast_channel_unlock(chan); 01260 01261 /* Get rid of each of the data stores on the channel */ 01262 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01263 /* Free the data store */ 01264 ast_channel_datastore_free(datastore); 01265 01266 /* Lock and unlock the channel just to be sure nobody has it locked still 01267 due to a reference that was stored in a datastore. (i.e. app_chanspy) */ 01268 ast_channel_lock(chan); 01269 ast_channel_unlock(chan); 01270 01271 if (chan->tech_pvt) { 01272 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01273 free(chan->tech_pvt); 01274 } 01275 01276 if (chan->sched) 01277 sched_context_destroy(chan->sched); 01278 01279 ast_copy_string(name, chan->name, sizeof(name)); 01280 if ((dashptr = strrchr(name, '-'))) { 01281 *dashptr = '\0'; 01282 } 01283 01284 /* Stop monitoring */ 01285 if (chan->monitor) 01286 chan->monitor->stop( chan, 0 ); 01287 01288 /* If there is native format music-on-hold state, free it */ 01289 if (chan->music_state) 01290 ast_moh_cleanup(chan); 01291 01292 /* Free translators */ 01293 if (chan->readtrans) 01294 ast_translator_free_path(chan->readtrans); 01295 if (chan->writetrans) 01296 ast_translator_free_path(chan->writetrans); 01297 if (chan->pbx) 01298 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01299 free_cid(&chan->cid); 01300 /* Close pipes if appropriate */ 01301 if ((fd = chan->alertpipe[0]) > -1) 01302 close(fd); 01303 if ((fd = chan->alertpipe[1]) > -1) 01304 close(fd); 01305 if ((fd = chan->timingfd) > -1) 01306 close(fd); 01307 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01308 ast_frfree(f); 01309 01310 /* loop over the variables list, freeing all data and deleting list items */ 01311 /* no need to lock the list, as the channel is already locked */ 01312 01313 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01314 ast_var_delete(vardata); 01315 01316 ast_app_group_discard(chan); 01317 01318 /* Destroy the jitterbuffer */ 01319 ast_jb_destroy(chan); 01320 01321 if (chan->cdr) { 01322 ast_cdr_discard(chan->cdr); 01323 chan->cdr = NULL; 01324 } 01325 01326 ast_mutex_destroy(&chan->lock); 01327 01328 ast_string_field_free_memory(chan); 01329 free(chan); 01330 AST_LIST_UNLOCK(&channels); 01331 01332 ast_device_state_changed_literal(name); 01333 }
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 3650 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_call_forward(), ast_feature_request_and_dial(), begin_dial(), findmeexec(), ring_entry(), and wait_for_answer().
03651 { 03652 struct ast_var_t *current, *newvar; 03653 const char *varname; 03654 03655 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03656 int vartype = 0; 03657 03658 varname = ast_var_full_name(current); 03659 if (!varname) 03660 continue; 03661 03662 if (varname[0] == '_') { 03663 vartype = 1; 03664 if (varname[1] == '_') 03665 vartype = 2; 03666 } 03667 03668 switch (vartype) { 03669 case 1: 03670 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03671 if (newvar) { 03672 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03673 if (option_debug) 03674 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03675 } 03676 break; 03677 case 2: 03678 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03679 if (newvar) { 03680 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03681 if (option_debug) 03682 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03683 } 03684 break; 03685 default: 03686 if (option_debug) 03687 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03688 break; 03689 } 03690 } 03691 }
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 3503 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(), and wait_for_answer().
03504 { 03505 int src; 03506 int dst; 03507 03508 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03509 /* Already compatible! Moving on ... */ 03510 return 0; 03511 } 03512 03513 /* Set up translation from the chan to the peer */ 03514 src = chan->nativeformats; 03515 dst = peer->nativeformats; 03516 if (ast_translator_best_choice(&dst, &src) < 0) { 03517 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03518 return -1; 03519 } 03520 03521 /* if the best path is not 'pass through', then 03522 transcoding is needed; if desired, force transcode path 03523 to use SLINEAR between channels, but only if there is 03524 no direct conversion available */ 03525 if ((src != dst) && ast_opt_transcode_via_slin && 03526 (ast_translate_path_steps(dst, src) != 1)) 03527 dst = AST_FORMAT_SLINEAR; 03528 if (ast_set_read_format(chan, dst) < 0) { 03529 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03530 return -1; 03531 } 03532 if (ast_set_write_format(peer, dst) < 0) { 03533 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03534 return -1; 03535 } 03536 03537 /* Set up translation from the peer to the chan */ 03538 src = peer->nativeformats; 03539 dst = chan->nativeformats; 03540 if (ast_translator_best_choice(&dst, &src) < 0) { 03541 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03542 return -1; 03543 } 03544 03545 /* if the best path is not 'pass through', then 03546 transcoding is needed; if desired, force transcode path 03547 to use SLINEAR between channels, but only if there is 03548 no direct conversion available */ 03549 if ((src != dst) && ast_opt_transcode_via_slin && 03550 (ast_translate_path_steps(dst, src) != 1)) 03551 dst = AST_FORMAT_SLINEAR; 03552 if (ast_set_read_format(peer, dst) < 0) { 03553 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03554 return -1; 03555 } 03556 if (ast_set_write_format(chan, dst) < 0) { 03557 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03558 return -1; 03559 } 03560 return 0; 03561 }
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 3563 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().
03564 { 03565 int res = -1; 03566 struct ast_channel *final_orig, *final_clone, *base; 03567 03568 retrymasq: 03569 final_orig = original; 03570 final_clone = clone; 03571 03572 ast_channel_lock(original); 03573 while (ast_channel_trylock(clone)) { 03574 ast_channel_unlock(original); 03575 usleep(1); 03576 ast_channel_lock(original); 03577 } 03578 03579 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03580 and if so, we don't really want to masquerade it, but its proxy */ 03581 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03582 final_orig = original->_bridge; 03583 03584 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03585 final_clone = clone->_bridge; 03586 03587 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03588 final_clone = base; 03589 } 03590 03591 if ((final_orig != original) || (final_clone != clone)) { 03592 /* Lots and lots of deadlock avoidance. The main one we're competing with 03593 * is ast_write(), which locks channels recursively, when working with a 03594 * proxy channel. */ 03595 if (ast_channel_trylock(final_orig)) { 03596 ast_channel_unlock(clone); 03597 ast_channel_unlock(original); 03598 goto retrymasq; 03599 } 03600 if (ast_channel_trylock(final_clone)) { 03601 ast_channel_unlock(final_orig); 03602 ast_channel_unlock(clone); 03603 ast_channel_unlock(original); 03604 goto retrymasq; 03605 } 03606 ast_channel_unlock(clone); 03607 ast_channel_unlock(original); 03608 original = final_orig; 03609 clone = final_clone; 03610 } 03611 03612 if (original == clone) { 03613 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03614 ast_channel_unlock(clone); 03615 ast_channel_unlock(original); 03616 return -1; 03617 } 03618 03619 if (option_debug) 03620 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03621 clone->name, original->name); 03622 if (original->masq) { 03623 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03624 original->masq->name, original->name); 03625 } else if (clone->masqr) { 03626 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03627 clone->name, clone->masqr->name); 03628 } else { 03629 original->masq = clone; 03630 clone->masqr = original; 03631 ast_queue_frame(original, &ast_null_frame); 03632 ast_queue_frame(clone, &ast_null_frame); 03633 if (option_debug) 03634 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03635 res = 0; 03636 } 03637 03638 ast_channel_unlock(clone); 03639 ast_channel_unlock(original); 03640 03641 return res; 03642 }
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 3101 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().
03102 { 03103 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 03104 { 03105 case 0: 03106 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 03107 case AST_CONTROL_HANGUP: 03108 return "Hangup"; 03109 case AST_CONTROL_RING: 03110 return "Local Ring"; 03111 case AST_CONTROL_RINGING: 03112 return "Remote end Ringing"; 03113 case AST_CONTROL_ANSWER: 03114 return "Remote end has Answered"; 03115 case AST_CONTROL_BUSY: 03116 return "Remote end is Busy"; 03117 case AST_CONTROL_CONGESTION: 03118 return "Congestion (circuits busy)"; 03119 default: 03120 return "Unknown Reason!!"; 03121 } 03122 }
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 3491 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().
03492 { 03493 if (chan->tech->send_html) 03494 return chan->tech->send_html(chan, subclass, data, datalen); 03495 return -1; 03496 }
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 3498 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec().
03499 { 03500 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03501 }
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 4598 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(), and vm_forwardoptions().
04599 { 04600 int res; 04601 04602 if (chan->tech->setoption) { 04603 res = chan->tech->setoption(chan, option, data, datalen); 04604 if (res < 0) 04605 return res; 04606 } else { 04607 errno = ENOSYS; 04608 return -1; 04609 } 04610 if (block) { 04611 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04612 intermediate packets. XXX */ 04613 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04614 return -1; 04615 } 04616 return 0; 04617 }
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 4926 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().
04927 { 04928 struct ast_silence_generator *state; 04929 04930 if (!(state = ast_calloc(1, sizeof(*state)))) { 04931 return NULL; 04932 } 04933 04934 state->old_write_format = chan->writeformat; 04935 04936 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 04937 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 04938 free(state); 04939 return NULL; 04940 } 04941 04942 ast_activate_generator(chan, &silence_generator, state); 04943 04944 if (option_debug) 04945 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 04946 04947 return state; 04948 }
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 4950 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().
04951 { 04952 if (!state) 04953 return; 04954 04955 ast_deactivate_generator(chan); 04956 04957 if (option_debug) 04958 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 04959 04960 if (ast_set_write_format(chan, state->old_write_format) < 0) 04961 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 04962 04963 free(state); 04964 }
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 3486 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by sendurl_exec().
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 1046 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
01047 { 01048 if (chan) 01049 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 01050 }
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 1162 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().
01163 { 01164 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01165 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4850 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04851 { 04852 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04853 }
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(), _macro_exec(), 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(), findmeexec(), 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 1612 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().
01613 { 01614 ast_channel_lock(chan); 01615 if (chan->generatordata) { 01616 if (chan->generator && chan->generator->release) 01617 chan->generator->release(chan, chan->generatordata); 01618 chan->generatordata = NULL; 01619 chan->generator = NULL; 01620 chan->fds[AST_GENERATOR_FD] = -1; 01621 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01622 ast_settimeout(chan, 0, NULL, NULL); 01623 } 01624 ast_channel_unlock(chan); 01625 }
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 3744 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_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, 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, report_new_callerid(), t, ast_channel::tech, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel_tech::type, ast_channel::uniqueid, ast_cdr::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().
03745 { 03746 int x,i; 03747 int res=0; 03748 int origstate; 03749 struct ast_frame *cur; 03750 const struct ast_channel_tech *t; 03751 void *t_pvt; 03752 struct ast_callerid tmpcid; 03753 struct ast_channel *clone = original->masq; 03754 struct ast_cdr *cdr; 03755 int rformat = original->readformat; 03756 int wformat = original->writeformat; 03757 char newn[100]; 03758 char orig[100]; 03759 char masqn[100]; 03760 char zombn[100]; 03761 03762 if (option_debug > 3) 03763 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03764 clone->name, clone->_state, original->name, original->_state); 03765 03766 /* XXX This is a seriously wacked out operation. We're essentially putting the guts of 03767 the clone channel into the original channel. Start by killing off the original 03768 channel's backend. I'm not sure we're going to keep this function, because 03769 while the features are nice, the cost is very high in terms of pure nastiness. XXX */ 03770 03771 /* We need the clone's lock, too */ 03772 ast_channel_lock(clone); 03773 03774 if (option_debug > 1) 03775 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03776 03777 /* Having remembered the original read/write formats, we turn off any translation on either 03778 one */ 03779 free_translation(clone); 03780 free_translation(original); 03781 03782 03783 /* Unlink the masquerade */ 03784 original->masq = NULL; 03785 clone->masqr = NULL; 03786 03787 /* Save the original name */ 03788 ast_copy_string(orig, original->name, sizeof(orig)); 03789 /* Save the new name */ 03790 ast_copy_string(newn, clone->name, sizeof(newn)); 03791 /* Create the masq name */ 03792 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03793 03794 /* Copy the name from the clone channel */ 03795 ast_string_field_set(original, name, newn); 03796 03797 /* Mangle the name of the clone channel */ 03798 ast_string_field_set(clone, name, masqn); 03799 03800 /* Notify any managers of the change, first the masq then the other */ 03801 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 03802 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03803 03804 /* Swap the technologies */ 03805 t = original->tech; 03806 original->tech = clone->tech; 03807 clone->tech = t; 03808 03809 /* Swap the cdrs */ 03810 cdr = original->cdr; 03811 /* swap cdr uniqueid between channels, to get cdr uniqueid = channel uniqueid */ 03812 ast_copy_string(clone->cdr->uniqueid, cdr->uniqueid, sizeof(cdr->uniqueid)); 03813 original->cdr = clone->cdr; 03814 clone->cdr = cdr; 03815 03816 t_pvt = original->tech_pvt; 03817 original->tech_pvt = clone->tech_pvt; 03818 clone->tech_pvt = t_pvt; 03819 03820 /* Swap the alertpipes */ 03821 for (i = 0; i < 2; i++) { 03822 x = original->alertpipe[i]; 03823 original->alertpipe[i] = clone->alertpipe[i]; 03824 clone->alertpipe[i] = x; 03825 } 03826 03827 /* 03828 * Swap the readq's. The end result should be this: 03829 * 03830 * 1) All frames should be on the new (original) channel. 03831 * 2) Any frames that were already on the new channel before this 03832 * masquerade need to be at the end of the readq, after all of the 03833 * frames on the old (clone) channel. 03834 * 3) The alertpipe needs to get poked for every frame that was already 03835 * on the new channel, since we are now using the alert pipe from the 03836 * old (clone) channel. 03837 */ 03838 { 03839 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 03840 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 03841 03842 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 03843 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 03844 03845 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 03846 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 03847 if (original->alertpipe[1] > -1) { 03848 int poke = 0; 03849 03850 if (write(original->alertpipe[1], &poke, sizeof(poke)) < 0) { 03851 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 03852 } 03853 } 03854 } 03855 } 03856 03857 /* Swap the raw formats */ 03858 x = original->rawreadformat; 03859 original->rawreadformat = clone->rawreadformat; 03860 clone->rawreadformat = x; 03861 x = original->rawwriteformat; 03862 original->rawwriteformat = clone->rawwriteformat; 03863 clone->rawwriteformat = x; 03864 03865 clone->_softhangup = AST_SOFTHANGUP_DEV; 03866 03867 /* And of course, so does our current state. Note we need not 03868 call ast_setstate since the event manager doesn't really consider 03869 these separate. We do this early so that the clone has the proper 03870 state of the original channel. */ 03871 origstate = original->_state; 03872 original->_state = clone->_state; 03873 clone->_state = origstate; 03874 03875 if (clone->tech->fixup){ 03876 res = clone->tech->fixup(original, clone); 03877 if (res) 03878 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03879 } 03880 03881 /* Start by disconnecting the original's physical side */ 03882 if (clone->tech->hangup) 03883 res = clone->tech->hangup(clone); 03884 if (res) { 03885 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03886 ast_channel_unlock(clone); 03887 return -1; 03888 } 03889 03890 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03891 /* Mangle the name of the clone channel */ 03892 ast_string_field_set(clone, name, zombn); 03893 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03894 03895 /* Update the type. */ 03896 t_pvt = original->monitor; 03897 original->monitor = clone->monitor; 03898 clone->monitor = t_pvt; 03899 03900 /* Keep the same language. */ 03901 ast_string_field_set(original, language, clone->language); 03902 /* Copy the FD's other than the generator fd */ 03903 for (x = 0; x < AST_MAX_FDS; x++) { 03904 if (x != AST_GENERATOR_FD) 03905 original->fds[x] = clone->fds[x]; 03906 } 03907 03908 ast_app_group_update(clone, original); 03909 /* Move data stores over */ 03910 if (AST_LIST_FIRST(&clone->datastores)) { 03911 struct ast_datastore *ds; 03912 /* We use a safe traversal here because some fixup routines actually 03913 * remove the datastore from the list and free them. 03914 */ 03915 AST_LIST_TRAVERSE_SAFE_BEGIN(&clone->datastores, ds, entry) { 03916 if (ds->info->chan_fixup) 03917 ds->info->chan_fixup(ds->data, clone, original); 03918 } 03919 AST_LIST_TRAVERSE_SAFE_END; 03920 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 03921 } 03922 03923 clone_variables(original, clone); 03924 /* Presense of ADSI capable CPE follows clone */ 03925 original->adsicpe = clone->adsicpe; 03926 /* Bridge remains the same */ 03927 /* CDR fields remain the same */ 03928 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 03929 /* Application and data remain the same */ 03930 /* Clone exception becomes real one, as with fdno */ 03931 ast_set_flag(original, ast_test_flag(clone, AST_FLAG_OUTGOING | AST_FLAG_EXCEPTION)); 03932 original->fdno = clone->fdno; 03933 /* Schedule context remains the same */ 03934 /* Stream stuff stays the same */ 03935 /* Keep the original state. The fixup code will need to work with it most likely */ 03936 03937 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 03938 out. */ 03939 tmpcid = original->cid; 03940 original->cid = clone->cid; 03941 clone->cid = tmpcid; 03942 report_new_callerid(original); 03943 03944 /* Restore original timing file descriptor */ 03945 original->fds[AST_TIMING_FD] = original->timingfd; 03946 03947 /* Our native formats are different now */ 03948 original->nativeformats = clone->nativeformats; 03949 03950 /* Context, extension, priority, app data, jump table, remain the same */ 03951 /* pvt switches. pbx stays the same, as does next */ 03952 03953 /* Set the write format */ 03954 ast_set_write_format(original, wformat); 03955 03956 /* Set the read format */ 03957 ast_set_read_format(original, rformat); 03958 03959 /* Copy the music class */ 03960 ast_string_field_set(original, musicclass, clone->musicclass); 03961 03962 if (option_debug) 03963 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 03964 03965 /* Okay. Last thing is to let the channel driver know about all this mess, so he 03966 can fix up everything as best as possible */ 03967 if (original->tech->fixup) { 03968 res = original->tech->fixup(clone, original); 03969 if (res) { 03970 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 03971 original->tech->type, original->name); 03972 ast_channel_unlock(clone); 03973 return -1; 03974 } 03975 } else 03976 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 03977 original->tech->type, original->name); 03978 03979 /* 03980 * If an indication is currently playing, maintain it on the channel 03981 * that is taking the place of original 03982 * 03983 * This is needed because the masquerade is swapping out in the internals 03984 * of this channel, and the new channel private data needs to be made 03985 * aware of the current visible indication (RINGING, CONGESTION, etc.) 03986 */ 03987 if (original->visible_indication) { 03988 ast_indicate(original, original->visible_indication); 03989 } 03990 03991 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 03992 a zombie so nothing tries to touch it. If it's already been marked as a 03993 zombie, then free it now (since it already is considered invalid). */ 03994 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 03995 if (option_debug) 03996 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 03997 ast_channel_unlock(clone); 03998 manager_event(EVENT_FLAG_CALL, "Hangup", 03999 "Channel: %s\r\n" 04000 "Uniqueid: %s\r\n" 04001 "Cause: %d\r\n" 04002 "Cause-txt: %s\r\n", 04003 clone->name, 04004 clone->uniqueid, 04005 clone->hangupcause, 04006 ast_cause2str(clone->hangupcause) 04007 ); 04008 ast_channel_free(clone); 04009 } else { 04010 if (option_debug) 04011 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 04012 ast_set_flag(clone, AST_FLAG_ZOMBIE); 04013 ast_queue_frame(clone, &ast_null_frame); 04014 ast_channel_unlock(clone); 04015 } 04016 04017 /* Signal any blocker */ 04018 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 04019 pthread_kill(original->blocker, SIGURG); 04020 if (option_debug) 04021 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 04022 return 0; 04023 }
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 4125 of file channel.c.
References AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_RETRY, AST_FEATURE_WARNING_ACTIVE, ast_jb_do_usecheck(), ast_jb_empty_and_reset(), ast_samp2tv(), ast_set_flag, ast_tvadd(), ast_tvdiff_ms(), ast_tvnow(), ast_tvzero(), config, f, ast_channel::nativeformats, and ast_channel::tech_pvt.
Referenced by ast_channel_bridge().
04128 { 04129 /* Copy voice back and forth between the two channels. */ 04130 struct ast_channel *cs[3]; 04131 struct ast_frame *f; 04132 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04133 int o0nativeformats; 04134 int o1nativeformats; 04135 int watch_c0_dtmf; 04136 int watch_c1_dtmf; 04137 void *pvt0, *pvt1; 04138 /* Indicates whether a frame was queued into a jitterbuffer */ 04139 int frame_put_in_jb = 0; 04140 int jb_in_use; 04141 int to; 04142 04143 cs[0] = c0; 04144 cs[1] = c1; 04145 pvt0 = c0->tech_pvt; 04146 pvt1 = c1->tech_pvt; 04147 o0nativeformats = c0->nativeformats; 04148 o1nativeformats = c1->nativeformats; 04149 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 04150 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 04151 04152 /* Check the need of a jitterbuffer for each channel */ 04153 jb_in_use = ast_jb_do_usecheck(c0, c1); 04154 if (jb_in_use) 04155 ast_jb_empty_and_reset(c0, c1); 04156 04157 if (config->feature_timer > 0 && ast_tvzero(config->nexteventts)) { 04158 /* calculate when the bridge should possibly break 04159 * if a partial feature match timed out */ 04160 config->partialfeature_timer = ast_tvadd(ast_tvnow(), ast_samp2tv(config->feature_timer, 1000)); 04161 } else { 04162 memset(&config->partialfeature_timer, 0, sizeof(config->partialfeature_timer)); 04163 } 04164 04165 for (;;) { 04166 struct ast_channel *who, *other; 04167 04168 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 04169 (o0nativeformats != c0->nativeformats) || 04170 (o1nativeformats != c1->nativeformats)) { 04171 /* Check for Masquerade, codec changes, etc */ 04172 res = AST_BRIDGE_RETRY; 04173 break; 04174 } 04175 if (bridge_end.tv_sec) { 04176 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 04177 if (to <= 0) { 04178 if (config->timelimit) { 04179 res = AST_BRIDGE_RETRY; 04180 /* generic bridge ending to play warning */ 04181 ast_set_flag(config, AST_FEATURE_WARNING_ACTIVE); 04182 } else { 04183 res = AST_BRIDGE_COMPLETE; 04184 } 04185 break; 04186 } 04187 } else { 04188 /* If a feature has been started and the bridge is configured to 04189 * to not break, leave the channel bridge when the feature timer 04190 * time has elapsed so the DTMF will be sent to the other side. 04191 */ 04192 if (!ast_tvzero(config->partialfeature_timer)) { 04193 int diff = ast_tvdiff_ms(config->partialfeature_timer, ast_tvnow()); 04194 if (diff <= 0) { 04195 res = AST_BRIDGE_RETRY; 04196 break; 04197 } 04198 } 04199 to = -1; 04200 } 04201 /* Calculate the appropriate max sleep interval - in general, this is the time, 04202 left to the closest jb delivery moment */ 04203 if (jb_in_use) 04204 to = ast_jb_get_when_to_wakeup(c0, c1, to); 04205 who = ast_waitfor_n(cs, 2, &to); 04206 if (!who) { 04207 /* No frame received within the specified timeout - check if we have to deliver now */ 04208 if (jb_in_use) 04209 ast_jb_get_and_deliver(c0, c1); 04210 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04211 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04212 c0->_softhangup = 0; 04213 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04214 c1->_softhangup = 0; 04215 c0->_bridge = c1; 04216 c1->_bridge = c0; 04217 } 04218 continue; 04219 } 04220 f = ast_read(who); 04221 if (!f) { 04222 *fo = NULL; 04223 *rc = who; 04224 if (option_debug) 04225 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 04226 break; 04227 } 04228 04229 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 04230 /* Try add the frame info the who's bridged channel jitterbuff */ 04231 if (jb_in_use) 04232 frame_put_in_jb = !ast_jb_put(other, f); 04233 04234 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 04235 int bridge_exit = 0; 04236 04237 switch (f->subclass) { 04238 case AST_CONTROL_HOLD: 04239 case AST_CONTROL_UNHOLD: 04240 case AST_CONTROL_VIDUPDATE: 04241 case AST_CONTROL_SRCUPDATE: 04242 ast_indicate_data(other, f->subclass, f->data, f->datalen); 04243 if (jb_in_use) { 04244 ast_jb_empty_and_reset(c0, c1); 04245 } 04246 break; 04247 default: 04248 *fo = f; 04249 *rc = who; 04250 bridge_exit = 1; 04251 if (option_debug) 04252 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 04253 break; 04254 } 04255 if (bridge_exit) 04256 break; 04257 } 04258 if ((f->frametype == AST_FRAME_VOICE) || 04259 (f->frametype == AST_FRAME_DTMF_BEGIN) || 04260 (f->frametype == AST_FRAME_DTMF) || 04261 (f->frametype == AST_FRAME_VIDEO) || 04262 (f->frametype == AST_FRAME_IMAGE) || 04263 (f->frametype == AST_FRAME_HTML) || 04264 (f->frametype == AST_FRAME_MODEM) || 04265 (f->frametype == AST_FRAME_TEXT)) { 04266 /* monitored dtmf causes exit from bridge */ 04267 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 04268 04269 if (monitored_source && 04270 (f->frametype == AST_FRAME_DTMF_END || 04271 f->frametype == AST_FRAME_DTMF_BEGIN)) { 04272 *fo = f; 04273 *rc = who; 04274 if (option_debug) 04275 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 04276 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 04277 who->name); 04278 04279 break; 04280 } 04281 /* Write immediately frames, not passed through jb */ 04282 if (!frame_put_in_jb) 04283 ast_write(other, f); 04284 04285 /* Check if we have to deliver now */ 04286 if (jb_in_use) 04287 ast_jb_get_and_deliver(c0, c1); 04288 } 04289 /* XXX do we want to pass on also frames not matched above ? */ 04290 ast_frfree(f); 04291 04292 /* Swap who gets priority */ 04293 cs[2] = cs[0]; 04294 cs[0] = cs[1]; 04295 cs[1] = cs[2]; 04296 } 04297 return res; 04298 }
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 1187 of file channel.c.
References channel_find_locked().
01188 { 01189 return channel_find_locked(NULL, NULL, 0, context, exten); 01190 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1168 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().
01169 { 01170 return channel_find_locked(NULL, name, 0, NULL, NULL); 01171 }
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 1174 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01175 { 01176 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01177 }
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 4771 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().
04772 { 04773 char *piece; 04774 char *c; 04775 int start=0, finish=0, x; 04776 ast_group_t group = 0; 04777 04778 if (ast_strlen_zero(s)) 04779 return 0; 04780 04781 c = ast_strdupa(s); 04782 04783 while ((piece = strsep(&c, ","))) { 04784 if (sscanf(piece, "%30d-%30d", &start, &finish) == 2) { 04785 /* Range */ 04786 } else if (sscanf(piece, "%30d", &start)) { 04787 /* Just one */ 04788 finish = start; 04789 } else { 04790 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04791 continue; 04792 } 04793 for (x = start; x <= finish; x++) { 04794 if ((x > 63) || (x < 0)) { 04795 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04796 } else 04797 group |= ((ast_group_t) 1 << x); 04798 } 04799 } 04800 return group; 04801 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1485 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_call_forward(), 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(), wait_for_answer(), and wait_for_winner().
01486 { 01487 int res = 0; 01488 01489 /* Don't actually hang up a channel that will masquerade as someone else, or 01490 if someone is going to masquerade as us */ 01491 ast_channel_lock(chan); 01492 01493 if (chan->audiohooks) { 01494 ast_audiohook_detach_list(chan->audiohooks); 01495 chan->audiohooks = NULL; 01496 } 01497 01498 ast_autoservice_stop(chan); 01499 01500 if (chan->masq) { 01501 if (ast_do_masquerade(chan)) 01502 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01503 } 01504 01505 if (chan->masq) { 01506 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01507 ast_channel_unlock(chan); 01508 return 0; 01509 } 01510 /* If this channel is one which will be masqueraded into something, 01511 mark it as a zombie already, so we know to free it later */ 01512 if (chan->masqr) { 01513 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01514 ast_channel_unlock(chan); 01515 return 0; 01516 } 01517 free_translation(chan); 01518 /* Close audio stream */ 01519 if (chan->stream) { 01520 ast_closestream(chan->stream); 01521 chan->stream = NULL; 01522 } 01523 /* Close video stream */ 01524 if (chan->vstream) { 01525 ast_closestream(chan->vstream); 01526 chan->vstream = NULL; 01527 } 01528 if (chan->sched) { 01529 sched_context_destroy(chan->sched); 01530 chan->sched = NULL; 01531 } 01532 01533 if (chan->generatordata) /* Clear any tone stuff remaining */ 01534 chan->generator->release(chan, chan->generatordata); 01535 chan->generatordata = NULL; 01536 chan->generator = NULL; 01537 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01538 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01539 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01540 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01541 ast_assert(ast_test_flag(chan, AST_FLAG_BLOCKING) == 0); 01542 } 01543 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01544 if (option_debug) 01545 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01546 if (chan->tech->hangup) 01547 res = chan->tech->hangup(chan); 01548 } else { 01549 if (option_debug) 01550 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01551 } 01552 01553 ast_channel_unlock(chan); 01554 manager_event(EVENT_FLAG_CALL, "Hangup", 01555 "Channel: %s\r\n" 01556 "Uniqueid: %s\r\n" 01557 "Cause: %d\r\n" 01558 "Cause-txt: %s\r\n", 01559 chan->name, 01560 chan->uniqueid, 01561 chan->hangupcause, 01562 ast_cause2str(chan->hangupcause) 01563 ); 01564 01565 if (chan->cdr && !ast_test_flag(chan->cdr, AST_CDR_FLAG_BRIDGED) && 01566 !ast_test_flag(chan->cdr, AST_CDR_FLAG_POST_DISABLED) && 01567 (chan->cdr->disposition != AST_CDR_NULL || ast_test_flag(chan->cdr, AST_CDR_FLAG_DIALED))) { 01568 01569 ast_cdr_end(chan->cdr); 01570 ast_cdr_detach(chan->cdr); 01571 chan->cdr = NULL; 01572 } 01573 01574 ast_channel_free(chan); 01575 01576 return res; 01577 }
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 2517 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().
02518 { 02519 return ast_indicate_data(chan, condition, NULL, 0); 02520 }
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 2555 of file channel.c.
References ast_channel::_state, 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_STATE_UP, 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().
02557 { 02558 /* By using an enum, we'll get compiler warnings for values not handled 02559 * in switch statements. */ 02560 enum ast_control_frame_type condition = _condition; 02561 const struct tone_zone_sound *ts = NULL; 02562 int res = -1; 02563 02564 ast_channel_lock(chan); 02565 02566 /* Don't bother if the channel is about to go away, anyway. */ 02567 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02568 ast_channel_unlock(chan); 02569 return -1; 02570 } 02571 02572 if (chan->tech->indicate) { 02573 /* See if the channel driver can handle this condition. */ 02574 res = chan->tech->indicate(chan, condition, data, datalen); 02575 } 02576 02577 ast_channel_unlock(chan); 02578 02579 if (chan->tech->indicate && !res) { 02580 /* The channel driver successfully handled this indication */ 02581 if (is_visible_indication(condition)) { 02582 chan->visible_indication = condition; 02583 } 02584 return 0; 02585 } 02586 02587 /* The channel driver does not support this indication, let's fake 02588 * it by doing our own tone generation if applicable. */ 02589 02590 /*!\note If we compare the enumeration type, which does not have any 02591 * negative constants, the compiler may optimize this code away. 02592 * Therefore, we must perform an integer comparison here. */ 02593 if (_condition < 0) { 02594 /* Stop any tones that are playing */ 02595 ast_playtones_stop(chan); 02596 return 0; 02597 } 02598 02599 /* Handle conditions that we have tones for. */ 02600 switch (condition) { 02601 case AST_CONTROL_RINGING: 02602 ts = ast_get_indication_tone(chan->zone, "ring"); 02603 /* It is common practice for channel drivers to return -1 if trying 02604 * to indicate ringing on a channel which is up. The idea is to let the 02605 * core generate the ringing inband. However, we don't want the 02606 * warning message about not being able to handle the specific indication 02607 * to print nor do we want ast_indicate_data to return an "error" for this 02608 * condition 02609 */ 02610 if (chan->_state == AST_STATE_UP) { 02611 res = 0; 02612 } 02613 break; 02614 case AST_CONTROL_BUSY: 02615 ts = ast_get_indication_tone(chan->zone, "busy"); 02616 break; 02617 case AST_CONTROL_CONGESTION: 02618 ts = ast_get_indication_tone(chan->zone, "congestion"); 02619 break; 02620 case AST_CONTROL_PROGRESS: 02621 case AST_CONTROL_PROCEEDING: 02622 case AST_CONTROL_VIDUPDATE: 02623 case AST_CONTROL_SRCUPDATE: 02624 case AST_CONTROL_RADIO_KEY: 02625 case AST_CONTROL_RADIO_UNKEY: 02626 case AST_CONTROL_OPTION: 02627 case AST_CONTROL_WINK: 02628 case AST_CONTROL_FLASH: 02629 case AST_CONTROL_OFFHOOK: 02630 case AST_CONTROL_TAKEOFFHOOK: 02631 case AST_CONTROL_ANSWER: 02632 case AST_CONTROL_HANGUP: 02633 case AST_CONTROL_RING: 02634 case AST_CONTROL_HOLD: 02635 case AST_CONTROL_UNHOLD: 02636 /* Nothing left to do for these. */ 02637 res = 0; 02638 break; 02639 } 02640 02641 if (ts && ts->data[0]) { 02642 /* We have a tone to play, yay. */ 02643 if (option_debug) { 02644 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02645 } 02646 ast_playtones_start(chan, 0, ts->data, 1); 02647 res = 0; 02648 chan->visible_indication = condition; 02649 } 02650 02651 if (res) { 02652 /* not handled */ 02653 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02654 } 02655 02656 return res; 02657 }
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 4807 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04810 { 04811 ast_moh_start_ptr = start_ptr; 04812 ast_moh_stop_ptr = stop_ptr; 04813 ast_moh_cleanup_ptr = cleanup_ptr; 04814 }
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 2499 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().
02500 { 02501 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02502 if (option_debug > 4) 02503 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); 02504 return ret; 02505 }
void ast_moh_cleanup | ( | struct ast_channel * | chan | ) |
Definition at line 4844 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04845 { 04846 if (ast_moh_cleanup_ptr) 04847 ast_moh_cleanup_ptr(chan); 04848 }
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 4824 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().
04825 { 04826 if (ast_moh_start_ptr) 04827 return ast_moh_start_ptr(chan, mclass, interpclass); 04828 04829 if (option_verbose > 2) { 04830 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04831 mclass ? mclass : (interpclass ? interpclass : "default")); 04832 } 04833 04834 return 0; 04835 }
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 4838 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(), and skinny_indicate().
04839 { 04840 if (ast_moh_stop_ptr) 04841 ast_moh_stop_ptr(chan); 04842 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 4856 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().
04857 { 04858 unsigned int i; 04859 int first=1; 04860 char num[3]; 04861 04862 buf[0] = '\0'; 04863 04864 if (!group) /* Return empty string if no group */ 04865 return buf; 04866 04867 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04868 if (group & ((ast_group_t) 1 << i)) { 04869 if (!first) { 04870 strncat(buf, ", ", buflen - strlen(buf) - 1); 04871 } else { 04872 first=0; 04873 } 04874 snprintf(num, sizeof(num), "%u", i); 04875 strncat(buf, num, buflen - strlen(buf) - 1); 04876 } 04877 } 04878 return buf; 04879 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2779 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().
02780 { 02781 struct ast_frame a = { AST_FRAME_VOICE }; 02782 char nothing[128]; 02783 02784 /* Send an empty audio frame to get things moving */ 02785 if (chan->_state != AST_STATE_UP) { 02786 if (option_debug) 02787 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02788 a.subclass = chan->rawwriteformat; 02789 a.data = nothing + AST_FRIENDLY_OFFSET; 02790 a.src = "ast_prod"; 02791 if (ast_write(chan, &a)) 02792 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02793 } 02794 return 0; 02795 }
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 1011 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().
01012 { 01013 struct ast_frame f = { AST_FRAME_CONTROL, }; 01014 01015 f.subclass = control; 01016 01017 return ast_queue_frame(chan, &f); 01018 }
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 1021 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().
01023 { 01024 struct ast_frame f = { AST_FRAME_CONTROL, }; 01025 01026 f.subclass = control; 01027 f.data = (void *) data; 01028 f.datalen = datalen; 01029 01030 return ast_queue_frame(chan, &f); 01031 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Queue one or more frames to a channel's frame queue.
chan | the channel to queue the frame(s) on | |
f | the frame(s) to queue. Note that the frame(s) will be duplicated by this function. It is the responsibility of the caller to handle freeing the memory associated with the frame(s) being passed if necessary. |
0 | success | |
non-zero | failure |
Definition at line 988 of file channel.c.
References __ast_queue_frame().
Referenced by __ast_read(), __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().
00989 { 00990 return __ast_queue_frame(chan, fin, 0, NULL); 00991 }
int ast_queue_frame_head | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Queue one or more frames to the head of a channel's frame queue.
chan | the channel to queue the frame(s) on | |
f | the frame(s) to queue. Note that the frame(s) will be duplicated by this function. It is the responsibility of the caller to handle freeing the memory associated with the frame(s) being passed if necessary. |
0 | success | |
non-zero | failure |
Definition at line 993 of file channel.c.
References __ast_queue_frame().
Referenced by __ast_read(), and ast_autoservice_stop().
00994 { 00995 return __ast_queue_frame(chan, fin, 1, NULL); 00996 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 999 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().
01000 { 01001 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 01002 /* Yeah, let's not change a lock-critical value without locking */ 01003 if (!ast_channel_trylock(chan)) { 01004 chan->_softhangup |= AST_SOFTHANGUP_DEV; 01005 ast_channel_unlock(chan); 01006 } 01007 return ast_queue_frame(chan, &f); 01008 }
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 2507 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().
02508 { 02509 return __ast_read(chan, 0); 02510 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 1960 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().
01961 { 01962 if (chan->generatordata && !ast_internal_timing_enabled(chan)) { 01963 void *tmp = chan->generatordata; 01964 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01965 int res; 01966 int samples; 01967 01968 if (chan->timingfunc) { 01969 if (option_debug > 1) 01970 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 01971 ast_settimeout(chan, 0, NULL, NULL); 01972 } 01973 01974 chan->generatordata = NULL; /* reset, to let writes go through */ 01975 01976 if (f->subclass != chan->writeformat) { 01977 float factor; 01978 factor = ((float) ast_format_rate(chan->writeformat)) / ((float) ast_format_rate(f->subclass)); 01979 samples = (int) ( ((float) f->samples) * factor ); 01980 } else { 01981 samples = f->samples; 01982 } 01983 01984 if (chan->generator->generate) { 01985 generate = chan->generator->generate; 01986 } 01987 /* This unlock is here based on two assumptions that hold true at this point in the 01988 * code. 1) this function is only called from within __ast_read() and 2) all generators 01989 * call ast_write() in their generate callback. 01990 * 01991 * The reason this is added is so that when ast_write is called, the lock that occurs 01992 * there will not recursively lock the channel. Doing this will cause intended deadlock 01993 * avoidance not to work in deeper functions 01994 */ 01995 ast_channel_unlock(chan); 01996 res = generate(chan, tmp, f->datalen, samples); 01997 ast_channel_lock(chan); 01998 chan->generatordata = tmp; 01999 if (res) { 02000 if (option_debug > 1) 02001 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 02002 ast_deactivate_generator(chan); 02003 } 02004 02005 } else if (f->frametype == AST_FRAME_CNG) { 02006 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 02007 if (option_debug > 1) 02008 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 02009 ast_settimeout(chan, 160, generator_force, chan); 02010 } 02011 } 02012 }
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 2512 of file channel.c.
References __ast_read().
Referenced by conf_run().
02513 { 02514 return __ast_read(chan, 1); 02515 }
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 3438 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().
03439 { 03440 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03441 }
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 3443 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().
03444 { 03445 int pos = 0; /* index in the buffer where we accumulate digits */ 03446 int to = ftimeout; 03447 03448 /* Stop if we're a zombie or need a soft hangup */ 03449 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03450 return -1; 03451 if (!len) 03452 return -1; 03453 for (;;) { 03454 int d; 03455 if (c->stream) { 03456 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03457 ast_stopstream(c); 03458 usleep(1000); 03459 if (!d) 03460 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03461 } else { 03462 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03463 } 03464 if (d < 0) 03465 return -1; 03466 if (d == 0) { 03467 s[pos]='\0'; 03468 return 1; 03469 } 03470 if (d == 1) { 03471 s[pos]='\0'; 03472 return 2; 03473 } 03474 if (!strchr(enders, d)) 03475 s[pos++] = d; 03476 if (strchr(enders, d) || (pos >= len)) { 03477 s[pos]='\0'; 03478 return 0; 03479 } 03480 to = timeout; 03481 } 03482 /* Never reached */ 03483 return 0; 03484 }
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 2659 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02660 { 02661 int c; 02662 char *buf = ast_recvtext(chan, timeout); 02663 if (buf == NULL) 02664 return -1; /* error or timeout */ 02665 c = *(unsigned char *)buf; 02666 free(buf); 02667 return c; 02668 }
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 2670 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().
02671 { 02672 int res, done = 0; 02673 char *buf = NULL; 02674 02675 while (!done) { 02676 struct ast_frame *f; 02677 if (ast_check_hangup(chan)) 02678 break; 02679 res = ast_waitfor(chan, timeout); 02680 if (res <= 0) /* timeout or error */ 02681 break; 02682 timeout = res; /* update timeout */ 02683 f = ast_read(chan); 02684 if (f == NULL) 02685 break; /* no frame */ 02686 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02687 done = 1; /* force a break */ 02688 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02689 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02690 done = 1; 02691 } 02692 ast_frfree(f); 02693 } 02694 return buf; 02695 }
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 3344 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_call_forward(), 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().
03345 { 03346 struct chanlist *chan; 03347 struct ast_channel *c; 03348 int capabilities; 03349 int fmt; 03350 int res; 03351 int foo; 03352 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03353 03354 if (!cause) 03355 cause = &foo; 03356 *cause = AST_CAUSE_NOTDEFINED; 03357 03358 if (AST_LIST_LOCK(&channels)) { 03359 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03360 return NULL; 03361 } 03362 03363 AST_LIST_TRAVERSE(&backends, chan, list) { 03364 if (strcasecmp(type, chan->tech->type)) 03365 continue; 03366 03367 capabilities = chan->tech->capabilities; 03368 fmt = format & AST_FORMAT_AUDIO_MASK; 03369 res = ast_translator_best_choice(&fmt, &capabilities); 03370 if (res < 0) { 03371 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03372 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 03373 AST_LIST_UNLOCK(&channels); 03374 return NULL; 03375 } 03376 AST_LIST_UNLOCK(&channels); 03377 if (!chan->tech->requester) 03378 return NULL; 03379 03380 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03381 return NULL; 03382 03383 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03384 return c; 03385 } 03386 03387 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03388 *cause = AST_CAUSE_NOSUCHDRIVER; 03389 AST_LIST_UNLOCK(&channels); 03390 03391 return NULL; 03392 }
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 3339 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
03340 { 03341 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 03342 }
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 1221 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(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01222 { 01223 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01224 }
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 1200 of file channel.c.
References ast_frfree, ast_read(), ast_waitfor(), and f.
Referenced by __login_exec(), and ast_safe_sleep().
01201 { 01202 struct ast_frame *f; 01203 01204 while (ms > 0) { 01205 if (cond && ((*cond)(data) == 0)) 01206 return 0; 01207 ms = ast_waitfor(chan, ms); 01208 if (ms < 0) 01209 return -1; 01210 if (ms > 0) { 01211 f = ast_read(chan); 01212 if (!f) 01213 return -1; 01214 ast_frfree(f); 01215 } 01216 } 01217 return 0; 01218 }
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 5138 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().
05140 { 05141 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 05142 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5132 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().
05134 { 05135 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 05136 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5126 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
05128 { 05129 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 05130 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 5150 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_cs(), 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_he(), ast_say_number_full_it(), ast_say_number_full_ka(), 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_zh().
05152 { 05153 char buf[256]; 05154 05155 snprintf(buf, sizeof(buf), "%d", num); 05156 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 05157 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5120 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().
05122 { 05123 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 05124 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5114 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_gr(), ast_say_date_he(), ast_say_date_ka(), 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_he(), ast_say_datetime_from_now_ka(), ast_say_datetime_from_now_pt(), ast_say_datetime_he(), ast_say_datetime_pt(), ast_say_datetime_zh(), ast_say_time_de(), ast_say_time_en(), ast_say_time_es(), ast_say_time_fr(), ast_say_time_gr(), ast_say_time_ka(), ast_say_time_nl(), ast_say_time_pt(), ast_say_time_pt_BR(), ast_say_time_zh(), 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(), vm_intro_gr(), vm_intro_he(), vm_intro_multilang(), vm_intro_pt(), and vm_intro_pt_BR().
05116 { 05117 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 05118 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5144 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
05146 { 05147 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 05148 }
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 2769 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().
02770 { 02771 if (chan->tech->send_digit_begin) { 02772 ast_senddigit_begin(chan, digit); 02773 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02774 } 02775 02776 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02777 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Definition at line 2710 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().
02711 { 02712 /* Device does not support DTMF tones, lets fake 02713 * it by doing our own generation. */ 02714 static const char* dtmf_tones[] = { 02715 "941+1336", /* 0 */ 02716 "697+1209", /* 1 */ 02717 "697+1336", /* 2 */ 02718 "697+1477", /* 3 */ 02719 "770+1209", /* 4 */ 02720 "770+1336", /* 5 */ 02721 "770+1477", /* 6 */ 02722 "852+1209", /* 7 */ 02723 "852+1336", /* 8 */ 02724 "852+1477", /* 9 */ 02725 "697+1633", /* A */ 02726 "770+1633", /* B */ 02727 "852+1633", /* C */ 02728 "941+1633", /* D */ 02729 "941+1209", /* * */ 02730 "941+1477" /* # */ 02731 }; 02732 02733 if (!chan->tech->send_digit_begin) 02734 return 0; 02735 02736 if (!chan->tech->send_digit_begin(chan, digit)) 02737 return 0; 02738 02739 if (digit >= '0' && digit <='9') 02740 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02741 else if (digit >= 'A' && digit <= 'D') 02742 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02743 else if (digit == '*') 02744 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02745 else if (digit == '#') 02746 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02747 else { 02748 /* not handled */ 02749 if (option_debug) 02750 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02751 } 02752 02753 return 0; 02754 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Definition at line 2756 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().
02757 { 02758 int res = -1; 02759 02760 if (chan->tech->send_digit_end) 02761 res = chan->tech->send_digit_end(chan, digit, duration); 02762 02763 if (res && chan->generator) 02764 ast_playtones_stop(chan); 02765 02766 return 0; 02767 }
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 2697 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().
02698 { 02699 int res = 0; 02700 /* Stop if we're a zombie or need a soft hangup */ 02701 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02702 return -1; 02703 CHECK_BLOCKING(chan); 02704 if (chan->tech->send_text) 02705 res = chan->tech->send_text(chan, text); 02706 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02707 return res; 02708 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 4025 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_strdup, ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_name, ast_callerid::cid_num, free, and report_new_callerid().
Referenced by __ast_request_and_dial(), agent_call(), ast_call_forward(), 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().
04026 { 04027 ast_channel_lock(chan); 04028 04029 if (callerid) { 04030 if (chan->cid.cid_num) 04031 free(chan->cid.cid_num); 04032 chan->cid.cid_num = ast_strdup(callerid); 04033 } 04034 if (calleridname) { 04035 if (chan->cid.cid_name) 04036 free(chan->cid.cid_name); 04037 chan->cid.cid_name = ast_strdup(calleridname); 04038 } 04039 if (ani) { 04040 if (chan->cid.cid_ani) 04041 free(chan->cid.cid_ani); 04042 chan->cid.cid_ani = ast_strdup(ani); 04043 } 04044 04045 report_new_callerid(chan); 04046 04047 ast_channel_unlock(chan); 04048 }
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 3089 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().
03090 { 03091 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 03092 &chan->readtrans, 0); 03093 }
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 4881 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_call_forward(), ast_pbx_outgoing_app(), and ast_pbx_outgoing_exten().
04882 { 04883 struct ast_variable *cur; 04884 04885 for (cur = vars; cur; cur = cur->next) 04886 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04887 }
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 3095 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().
03096 { 03097 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 03098 &chan->writetrans, 1); 03099 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 4050 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().
04051 { 04052 char name[AST_CHANNEL_NAME], *dashptr; 04053 int oldstate = chan->_state; 04054 04055 if (oldstate == state) 04056 return 0; 04057 04058 ast_copy_string(name, chan->name, sizeof(name)); 04059 if ((dashptr = strrchr(name, '-'))) { 04060 *dashptr = '\0'; 04061 } 04062 04063 chan->_state = state; 04064 ast_device_state_changed_literal(name); 04065 /* setstate used to conditionally report Newchannel; this is no more */ 04066 manager_event(EVENT_FLAG_CALL, 04067 "Newstate", 04068 "Channel: %s\r\n" 04069 "State: %s\r\n" 04070 "CallerID: %s\r\n" 04071 "CallerIDName: %s\r\n" 04072 "Uniqueid: %s\r\n", 04073 chan->name, ast_state2str(chan->_state), 04074 S_OR(chan->cid.cid_num, "<unknown>"), 04075 S_OR(chan->cid.cid_name, "<unknown>"), 04076 chan->uniqueid); 04077 04078 return 0; 04079 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 1863 of file channel.c.
References ast_channel_lock, ast_channel_unlock, 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().
01864 { 01865 int res = -1; 01866 #ifdef HAVE_DAHDI 01867 ast_channel_lock(c); 01868 if (c->timingfd > -1) { 01869 if (!func) { 01870 samples = 0; 01871 data = 0; 01872 } 01873 if (option_debug) 01874 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 01875 res = ioctl(c->timingfd, DAHDI_TIMERCONFIG, &samples); 01876 c->timingfunc = func; 01877 c->timingdata = data; 01878 } 01879 ast_channel_unlock(c); 01880 #endif 01881 return res; 01882 }
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 1463 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().
01464 { 01465 int res; 01466 ast_channel_lock(chan); 01467 res = ast_softhangup_nolock(chan, cause); 01468 ast_channel_unlock(chan); 01469 return res; 01470 }
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 1449 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().
01450 { 01451 if (option_debug) 01452 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01453 /* Inform channel driver that we need to be hung up, if it cares */ 01454 chan->_softhangup |= cause; 01455 ast_queue_frame(chan, &ast_null_frame); 01456 /* Interrupt any poll call or such */ 01457 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01458 pthread_kill(chan->blocker, SIGURG); 01459 return 0; 01460 }
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 4753 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04754 { 04755 int res; 04756 04757 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04758 return res; 04759 04760 /* Give us some wiggle room */ 04761 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04762 struct ast_frame *f = ast_read(chan); 04763 if (f) 04764 ast_frfree(f); 04765 else 04766 return -1; 04767 } 04768 return 0; 04769 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4735 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().
04736 { 04737 struct tonepair_def d = { 0, }; 04738 04739 d.freq1 = freq1; 04740 d.freq2 = freq2; 04741 d.duration = duration; 04742 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04743 if (ast_activate_generator(chan, &tonepair, &d)) 04744 return -1; 04745 return 0; 04746 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4748 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04749 { 04750 ast_deactivate_generator(chan); 04751 }
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 3420 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().
03421 { 03422 int res = -1; 03423 03424 /* Stop if we're a zombie or need a soft hangup */ 03425 ast_channel_lock(chan); 03426 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03427 if (chan->tech->transfer) { 03428 res = chan->tech->transfer(chan, dest); 03429 if (!res) 03430 res = 1; 03431 } else 03432 res = 0; 03433 } 03434 ast_channel_unlock(chan); 03435 return res; 03436 }
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 4816 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by unload_module().
04817 { 04818 ast_moh_start_ptr = NULL; 04819 ast_moh_stop_ptr = NULL; 04820 ast_moh_cleanup_ptr = NULL; 04821 }
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 1847 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().
01848 { 01849 int oldms = ms; /* -1 if no timeout */ 01850 01851 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 01852 if ((ms < 0) && (oldms < 0)) 01853 ms = 0; 01854 return ms; 01855 }
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 1842 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().
01843 { 01844 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 01845 }
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 1686 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01687 { 01688 int winner = -1; 01689 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01690 return winner; 01691 }
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 1694 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_poll, ast_set_flag, AST_SOFTHANGUP_TIMEOUT, ast_tvdiff_ms(), ast_tvnow(), CHECK_BLOCKING, errno, 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().
01696 { 01697 struct timeval start = { 0 , 0 }; 01698 struct pollfd *pfds = NULL; 01699 int res; 01700 long rms; 01701 int x, y, max; 01702 int sz; 01703 time_t now = 0; 01704 long whentohangup = 0, diff; 01705 struct ast_channel *winner = NULL; 01706 struct fdmap { 01707 int chan; 01708 int fdno; 01709 } *fdmap = NULL; 01710 01711 if ((sz = n * AST_MAX_FDS + nfds)) { 01712 pfds = alloca(sizeof(*pfds) * sz); 01713 fdmap = alloca(sizeof(*fdmap) * sz); 01714 } 01715 01716 if (outfd) 01717 *outfd = -99999; 01718 if (exception) 01719 *exception = 0; 01720 01721 /* Perform any pending masquerades */ 01722 for (x=0; x < n; x++) { 01723 ast_channel_lock(c[x]); 01724 if (c[x]->masq) { 01725 if (ast_do_masquerade(c[x])) { 01726 ast_log(LOG_WARNING, "Masquerade failed\n"); 01727 *ms = -1; 01728 ast_channel_unlock(c[x]); 01729 return NULL; 01730 } 01731 } 01732 if (c[x]->whentohangup) { 01733 if (!whentohangup) 01734 time(&now); 01735 diff = c[x]->whentohangup - now; 01736 if (diff < 1) { 01737 /* Should already be hungup */ 01738 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01739 ast_channel_unlock(c[x]); 01740 return c[x]; 01741 } 01742 if (!whentohangup || (diff < whentohangup)) 01743 whentohangup = diff; 01744 } 01745 ast_channel_unlock(c[x]); 01746 } 01747 /* Wait full interval */ 01748 rms = *ms; 01749 if (whentohangup) { 01750 rms = whentohangup * 1000; /* timeout in milliseconds */ 01751 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01752 rms = *ms; 01753 } 01754 /* 01755 * Build the pollfd array, putting the channels' fds first, 01756 * followed by individual fds. Order is important because 01757 * individual fd's must have priority over channel fds. 01758 */ 01759 max = 0; 01760 for (x=0; x<n; x++) { 01761 for (y=0; y<AST_MAX_FDS; y++) { 01762 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01763 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01764 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01765 } 01766 CHECK_BLOCKING(c[x]); 01767 } 01768 /* Add the individual fds */ 01769 for (x=0; x<nfds; x++) { 01770 fdmap[max].chan = -1; 01771 max += ast_add_fd(&pfds[max], fds[x]); 01772 } 01773 01774 if (*ms > 0) 01775 start = ast_tvnow(); 01776 01777 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01778 do { 01779 int kbrms = rms; 01780 if (kbrms > 600000) 01781 kbrms = 600000; 01782 res = ast_poll(pfds, max, kbrms); 01783 if (!res) 01784 rms -= kbrms; 01785 } while (!res && (rms > 0)); 01786 } else { 01787 res = ast_poll(pfds, max, rms); 01788 } 01789 for (x=0; x<n; x++) 01790 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01791 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01792 if (errno != EINTR) 01793 *ms = -1; 01794 return NULL; 01795 } 01796 if (whentohangup) { /* if we have a timeout, check who expired */ 01797 time(&now); 01798 for (x=0; x<n; x++) { 01799 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01800 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01801 if (winner == NULL) 01802 winner = c[x]; 01803 } 01804 } 01805 } 01806 if (res == 0) { /* no fd ready, reset timeout and done */ 01807 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01808 return winner; 01809 } 01810 /* 01811 * Then check if any channel or fd has a pending event. 01812 * Remember to check channels first and fds last, as they 01813 * must have priority on setting 'winner' 01814 */ 01815 for (x = 0; x < max; x++) { 01816 res = pfds[x].revents; 01817 if (res == 0) 01818 continue; 01819 if (fdmap[x].chan >= 0) { /* this is a channel */ 01820 winner = c[fdmap[x].chan]; /* override previous winners */ 01821 if (res & POLLPRI) 01822 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01823 else 01824 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01825 winner->fdno = fdmap[x].fdno; 01826 } else { /* this is an fd */ 01827 if (outfd) 01828 *outfd = pfds[x].fd; 01829 if (exception) 01830 *exception = (res & POLLPRI) ? -1 : 0; 01831 winner = NULL; 01832 } 01833 } 01834 if (*ms > 0) { 01835 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01836 if (*ms < 0) 01837 *ms = 0; 01838 } 01839 return winner; 01840 }
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 1858 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().
01859 { 01860 return ast_waitfordigit_full(c, ms, -1, -1); 01861 }
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 1884 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().
01885 { 01886 /* Stop if we're a zombie or need a soft hangup */ 01887 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 01888 return -1; 01889 01890 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 01891 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 01892 01893 /* Wait for a digit, no more than ms milliseconds total. */ 01894 while (ms) { 01895 struct ast_channel *rchan; 01896 int outfd; 01897 01898 errno = 0; 01899 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 01900 if (!rchan && outfd < 0 && ms) { 01901 if (errno == 0 || errno == EINTR) 01902 continue; 01903 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 01904 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01905 return -1; 01906 } else if (outfd > -1) { 01907 /* The FD we were watching has something waiting */ 01908 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01909 return 1; 01910 } else if (rchan) { 01911 int res; 01912 struct ast_frame *f = ast_read(c); 01913 if (!f) 01914 return -1; 01915 01916 switch(f->frametype) { 01917 case AST_FRAME_DTMF_BEGIN: 01918 break; 01919 case AST_FRAME_DTMF_END: 01920 res = f->subclass; 01921 ast_frfree(f); 01922 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01923 return res; 01924 case AST_FRAME_CONTROL: 01925 switch(f->subclass) { 01926 case AST_CONTROL_HANGUP: 01927 ast_frfree(f); 01928 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01929 return -1; 01930 case AST_CONTROL_RINGING: 01931 case AST_CONTROL_ANSWER: 01932 case AST_CONTROL_SRCUPDATE: 01933 /* Unimportant */ 01934 break; 01935 default: 01936 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 01937 break; 01938 } 01939 break; 01940 case AST_FRAME_VOICE: 01941 /* Write audio if appropriate */ 01942 if (audiofd > -1) { 01943 if (write(audiofd, f->data, f->datalen) < 0) { 01944 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 01945 } 01946 } 01947 default: 01948 /* Ignore */ 01949 break; 01950 } 01951 ast_frfree(f); 01952 } 01953 } 01954 01955 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01956 01957 return 0; /* Time is up */ 01958 }
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 1193 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01195 { 01196 return channel_find_locked(chan, NULL, 0, context, exten); 01197 }
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 1180 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01182 { 01183 return channel_find_locked(chan, name, namelen, NULL, NULL); 01184 }
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 2808 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_LIST_NEXT, 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, ast_frame::frame_list, 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_CONSTANT_DELAY, MONITOR_DELAY, ast_channel::name, ast_frame::next, option_debug, ast_channel::outsmpl, ast_channel::rawwriteformat, ast_frame::samples, 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().
02809 { 02810 int res = -1; 02811 int count = 0; 02812 struct ast_frame *f = NULL; 02813 02814 /*Deadlock avoidance*/ 02815 while(ast_channel_trylock(chan)) { 02816 /*cannot goto done since the channel is not locked*/ 02817 if(count++ > 10) { 02818 if(option_debug) 02819 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 02820 return 0; 02821 } 02822 usleep(1); 02823 } 02824 /* Stop if we're a zombie or need a soft hangup */ 02825 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02826 goto done; 02827 02828 /* Handle any pending masquerades */ 02829 if (chan->masq && ast_do_masquerade(chan)) { 02830 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02831 goto done; 02832 } 02833 if (chan->masqr) { 02834 res = 0; /* XXX explain, why 0 ? */ 02835 goto done; 02836 } 02837 if (chan->generatordata) { 02838 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02839 ast_deactivate_generator(chan); 02840 else { 02841 if (fr->frametype == AST_FRAME_DTMF_END) { 02842 /* There is a generator running while we're in the middle of a digit. 02843 * It's probably inband DTMF, so go ahead and pass it so it can 02844 * stop the generator */ 02845 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02846 ast_channel_unlock(chan); 02847 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02848 ast_channel_lock(chan); 02849 CHECK_BLOCKING(chan); 02850 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 02851 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 02852 res = (chan->tech->indicate == NULL) ? 0 : 02853 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02854 } 02855 res = 0; /* XXX explain, why 0 ? */ 02856 goto done; 02857 } 02858 } 02859 /* High bit prints debugging */ 02860 if (chan->fout & DEBUGCHAN_FLAG) 02861 ast_frame_dump(chan->name, fr, ">>"); 02862 CHECK_BLOCKING(chan); 02863 switch(fr->frametype) { 02864 case AST_FRAME_CONTROL: 02865 res = (chan->tech->indicate == NULL) ? 0 : 02866 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02867 break; 02868 case AST_FRAME_DTMF_BEGIN: 02869 if (chan->audiohooks) { 02870 struct ast_frame *old_frame = fr; 02871 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02872 if (old_frame != fr) 02873 f = fr; 02874 } 02875 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02876 ast_channel_unlock(chan); 02877 res = ast_senddigit_begin(chan, fr->subclass); 02878 ast_channel_lock(chan); 02879 CHECK_BLOCKING(chan); 02880 break; 02881 case AST_FRAME_DTMF_END: 02882 if (chan->audiohooks) { 02883 struct ast_frame *new_frame = fr; 02884 02885 new_frame = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02886 if (new_frame != fr) { 02887 ast_frfree(new_frame); 02888 } 02889 } 02890 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02891 ast_channel_unlock(chan); 02892 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02893 ast_channel_lock(chan); 02894 CHECK_BLOCKING(chan); 02895 break; 02896 case AST_FRAME_TEXT: 02897 res = (chan->tech->send_text == NULL) ? 0 : 02898 chan->tech->send_text(chan, (char *) fr->data); 02899 break; 02900 case AST_FRAME_HTML: 02901 res = (chan->tech->send_html == NULL) ? 0 : 02902 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02903 break; 02904 case AST_FRAME_VIDEO: 02905 /* XXX Handle translation of video codecs one day XXX */ 02906 res = (chan->tech->write_video == NULL) ? 0 : 02907 chan->tech->write_video(chan, fr); 02908 break; 02909 case AST_FRAME_MODEM: 02910 res = (chan->tech->write == NULL) ? 0 : 02911 chan->tech->write(chan, fr); 02912 break; 02913 case AST_FRAME_VOICE: 02914 if (chan->tech->write == NULL) 02915 break; /*! \todo XXX should return 0 maybe ? */ 02916 02917 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02918 if (fr->subclass == chan->rawwriteformat) 02919 f = fr; 02920 else 02921 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02922 02923 /* If we have no frame of audio, then we have to bail out */ 02924 if (!f) { 02925 res = 0; 02926 break; 02927 } 02928 02929 if (chan->audiohooks) { 02930 struct ast_frame *new_frame, *cur; 02931 02932 for (cur = f; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 02933 new_frame = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, cur); 02934 if (new_frame != cur) { 02935 ast_frfree(new_frame); 02936 } 02937 } 02938 } 02939 02940 /* If Monitor is running on this channel, then we have to write frames out there too */ 02941 /* the translator on chan->writetrans may have returned multiple frames 02942 from the single frame we passed in; if so, feed each one of them to the 02943 monitor */ 02944 if (chan->monitor && chan->monitor->write_stream) { 02945 struct ast_frame *cur; 02946 02947 for (cur = f; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 02948 /* XXX must explain this code */ 02949 #ifndef MONITOR_CONSTANT_DELAY 02950 int jump = chan->insmpl - chan->outsmpl - 4 * cur->samples; 02951 if (jump >= 0) { 02952 jump = chan->insmpl - chan->outsmpl; 02953 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 02954 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02955 chan->outsmpl += jump + cur->samples; 02956 } else { 02957 chan->outsmpl += cur->samples; 02958 } 02959 #else 02960 int jump = chan->insmpl - chan->outsmpl; 02961 if (jump - MONITOR_DELAY >= 0) { 02962 if (ast_seekstream(chan->monitor->write_stream, jump - cur->samples, SEEK_FORCECUR) == -1) 02963 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02964 chan->outsmpl += jump; 02965 } else { 02966 chan->outsmpl += cur->samples; 02967 } 02968 #endif 02969 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02970 if (ast_writestream(chan->monitor->write_stream, cur) < 0) 02971 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 02972 } 02973 } 02974 } 02975 02976 /* the translator on chan->writetrans may have returned multiple frames 02977 from the single frame we passed in; if so, feed each one of them to the 02978 channel, freeing each one after it has been written */ 02979 if ((f != fr) && AST_LIST_NEXT(f, frame_list)) { 02980 struct ast_frame *cur, *next; 02981 unsigned int skip = 0; 02982 02983 for (cur = f, next = AST_LIST_NEXT(cur, frame_list); 02984 cur; 02985 cur = next, next = cur ? AST_LIST_NEXT(cur, frame_list) : NULL) { 02986 if (!skip) { 02987 if ((res = chan->tech->write(chan, cur)) < 0) { 02988 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02989 skip = 1; 02990 } else if (next) { 02991 /* don't do this for the last frame in the list, 02992 as the code outside the loop will do it once 02993 */ 02994 chan->fout = FRAMECOUNT_INC(chan->fout); 02995 } 02996 } 02997 ast_frfree(cur); 02998 } 02999 03000 /* reset f so the code below doesn't attempt to free it */ 03001 f = NULL; 03002 } else { 03003 res = chan->tech->write(chan, f); 03004 } 03005 break; 03006 case AST_FRAME_NULL: 03007 case AST_FRAME_IAX: 03008 /* Ignore these */ 03009 res = 0; 03010 break; 03011 default: 03012 /* At this point, fr is the incoming frame and f is NULL. Channels do 03013 * not expect to get NULL as a frame pointer and will segfault. Hence, 03014 * we output the original frame passed in. */ 03015 res = chan->tech->write(chan, fr); 03016 break; 03017 } 03018 03019 if (f && f != fr) 03020 ast_frfree(f); 03021 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03022 03023 /* Consider a write failure to force a soft hangup */ 03024 if (res < 0) { 03025 chan->_softhangup |= AST_SOFTHANGUP_DEV; 03026 } else { 03027 chan->fout = FRAMECOUNT_INC(chan->fout); 03028 } 03029 done: 03030 ast_channel_unlock(chan); 03031 return res; 03032 }
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 2797 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02798 { 02799 int res; 02800 if (!chan->tech->write_video) 02801 return 0; 02802 res = ast_write(chan, fr); 02803 if (!res) 02804 res = 1; 02805 return res; 02806 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 4091 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().
04092 { 04093 int min = 0, sec = 0, check; 04094 04095 check = ast_autoservice_start(peer); 04096 if (check) 04097 return; 04098 04099 if (remain > 0) { 04100 if (remain / 60 > 1) { 04101 min = remain / 60; 04102 sec = remain % 60; 04103 } else { 04104 sec = remain; 04105 } 04106 } 04107 04108 if (!strcmp(sound,"timeleft")) { /* Queue support */ 04109 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 04110 if (min) { 04111 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 04112 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 04113 } 04114 if (sec) { 04115 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 04116 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 04117 } 04118 } else { 04119 ast_stream_and_wait(chan, sound, chan->language, ""); 04120 } 04121 04122 ast_autoservice_stop(peer); 04123 }
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 1076 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().
01079 { 01080 const char *msg = prev ? "deadlock" : "initial deadlock"; 01081 int retries; 01082 struct ast_channel *c; 01083 const struct ast_channel *_prev = prev; 01084 01085 for (retries = 0; retries < 200; retries++) { 01086 int done; 01087 /* Reset prev on each retry. See note below for the reason. */ 01088 prev = _prev; 01089 AST_LIST_LOCK(&channels); 01090 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01091 if (prev) { /* look for last item, first, before any evaluation */ 01092 if (c != prev) /* not this one */ 01093 continue; 01094 /* found, prepare to return c->next */ 01095 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01096 /*!\note 01097 * We're done searching through the list for the previous item. 01098 * Any item after this point, we want to evaluate for a match. 01099 * If we didn't set prev to NULL here, then we would only 01100 * return matches for the first matching item (since the above 01101 * "if (c != prev)" would not permit any other potential 01102 * matches to reach the additional matching logic, below). 01103 * Instead, it would just iterate until it once again found the 01104 * original match, then iterate down to the end of the list and 01105 * quit. 01106 */ 01107 prev = NULL; 01108 } 01109 if (name) { /* want match by name */ 01110 if ((!namelen && strcasecmp(c->name, name)) || 01111 (namelen && strncasecmp(c->name, name, namelen))) 01112 continue; /* name match failed */ 01113 } else if (exten) { 01114 if (context && strcasecmp(c->context, context) && 01115 strcasecmp(c->macrocontext, context)) 01116 continue; /* context match failed */ 01117 if (strcasecmp(c->exten, exten) && 01118 strcasecmp(c->macroexten, exten)) 01119 continue; /* exten match failed */ 01120 } 01121 /* if we get here, c points to the desired record */ 01122 break; 01123 } 01124 /* exit if chan not found or mutex acquired successfully */ 01125 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01126 done = c == NULL || ast_channel_trylock(c) == 0; 01127 if (!done) { 01128 if (option_debug) 01129 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01130 if (retries == 199) { 01131 /* We are about to fail due to a deadlock, so report this 01132 * while we still have the list lock. 01133 */ 01134 if (option_debug) 01135 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01136 /* As we have deadlocked, we will skip this channel and 01137 * see if there is another match. 01138 * NOTE: No point doing this for a full-name match, 01139 * as there can be no more matches. 01140 */ 01141 if (!(name && !namelen)) { 01142 prev = c; 01143 retries = -1; 01144 } 01145 } 01146 } 01147 AST_LIST_UNLOCK(&channels); 01148 if (done) 01149 return c; 01150 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01151 * starting from the beginning of the list we can restore our saved pointer to the previous 01152 * channel and start from there. 01153 */ 01154 prev = _prev; 01155 usleep(1); /* give other threads a chance before retrying */ 01156 } 01157 01158 return NULL; 01159 }
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 4968 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
04969 { 04970 switch (reason) { 04971 case CHANNEL_MODULE_LOAD: 04972 return "LOAD (Channel module load)"; 04973 04974 case CHANNEL_MODULE_RELOAD: 04975 return "RELOAD (Channel module reload)"; 04976 04977 case CHANNEL_CLI_RELOAD: 04978 return "CLIRELOAD (Channel module reload by CLI command)"; 04979 04980 default: 04981 return "MANAGERRELOAD (Channel module reload by manager)"; 04982 } 04983 };
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 3702 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().
03703 { 03704 struct ast_var_t *current, *newvar; 03705 /* Append variables from clone channel into original channel */ 03706 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03707 if (AST_LIST_FIRST(&clone->varshead)) 03708 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03709 03710 /* then, dup the varshead list into the clone */ 03711 03712 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 03713 newvar = ast_var_assign(current->name, current->value); 03714 if (newvar) 03715 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 03716 } 03717 }
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 1226 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().
01227 { 01228 if (cid->cid_dnid) 01229 free(cid->cid_dnid); 01230 if (cid->cid_num) 01231 free(cid->cid_num); 01232 if (cid->cid_name) 01233 free(cid->cid_name); 01234 if (cid->cid_ani) 01235 free(cid->cid_ani); 01236 if (cid->cid_rdnis) 01237 free(cid->cid_rdnis); 01238 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1472 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().
01473 { 01474 if (clone->writetrans) 01475 ast_translator_free_path(clone->writetrans); 01476 if (clone->readtrans) 01477 ast_translator_free_path(clone->readtrans); 01478 clone->writetrans = NULL; 01479 clone->readtrans = NULL; 01480 clone->rawwriteformat = clone->nativeformats; 01481 clone->rawreadformat = clone->nativeformats; 01482 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1627 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().
01628 { 01629 /* Called if generator doesn't have data */ 01630 void *tmp; 01631 int res; 01632 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01633 struct ast_channel *chan = (struct ast_channel *)data; 01634 01635 ast_channel_lock(chan); 01636 tmp = chan->generatordata; 01637 chan->generatordata = NULL; 01638 if (chan->generator) 01639 generate = chan->generator->generate; 01640 ast_channel_unlock(chan); 01641 01642 if (!tmp || !generate) 01643 return 0; 01644 01645 res = generate(chan, tmp, 0, ast_format_rate(chan->writeformat & AST_FORMAT_AUDIO_MASK) / 50); 01646 01647 chan->generatordata = tmp; 01648 01649 if (res) { 01650 if (option_debug) 01651 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01652 ast_deactivate_generator(chan); 01653 } 01654 01655 return 0; 01656 }
static void handle_cause | ( | int | cause, | |
int * | outstate | |||
) | [static] |
Definition at line 3124 of file channel.c.
References AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, AST_CONTROL_BUSY, and AST_CONTROL_CONGESTION.
Referenced by __ast_request_and_dial(), and ast_call_forward().
03125 { 03126 if (outstate) { 03127 /* compute error and return */ 03128 if (cause == AST_CAUSE_BUSY) 03129 *outstate = AST_CONTROL_BUSY; 03130 else if (cause == AST_CAUSE_CONGESTION) 03131 *outstate = AST_CONTROL_CONGESTION; 03132 else 03133 *outstate = 0; 03134 } 03135 }
static int attribute_const is_visible_indication | ( | enum ast_control_frame_type | condition | ) | [static] |
Definition at line 2522 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().
02523 { 02524 /* Don't include a default case here so that we get compiler warnings 02525 * when a new type is added. */ 02526 02527 switch (condition) { 02528 case AST_CONTROL_PROGRESS: 02529 case AST_CONTROL_PROCEEDING: 02530 case AST_CONTROL_VIDUPDATE: 02531 case AST_CONTROL_SRCUPDATE: 02532 case AST_CONTROL_RADIO_KEY: 02533 case AST_CONTROL_RADIO_UNKEY: 02534 case AST_CONTROL_OPTION: 02535 case AST_CONTROL_WINK: 02536 case AST_CONTROL_FLASH: 02537 case AST_CONTROL_OFFHOOK: 02538 case AST_CONTROL_TAKEOFFHOOK: 02539 case AST_CONTROL_ANSWER: 02540 case AST_CONTROL_HANGUP: 02541 return 0; 02542 02543 case AST_CONTROL_CONGESTION: 02544 case AST_CONTROL_BUSY: 02545 case AST_CONTROL_RINGING: 02546 case AST_CONTROL_RING: 02547 case AST_CONTROL_HOLD: 02548 case AST_CONTROL_UNHOLD: 02549 return 1; 02550 } 02551 02552 return 0; 02553 }
static void queue_dtmf_readq | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [inline, static] |
Definition at line 2014 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().
02015 { 02016 struct ast_frame *fr = &chan->dtmff; 02017 02018 fr->frametype = AST_FRAME_DTMF_END; 02019 fr->subclass = f->subclass; 02020 fr->len = f->len; 02021 02022 /* The only time this function will be called is for a frame that just came 02023 * out of the channel driver. So, we want to stick it on the tail of the 02024 * readq. */ 02025 02026 ast_queue_frame(chan, fr); 02027 }
static void report_new_callerid | ( | const struct ast_channel * | chan | ) | [static] |
Definition at line 3722 of file channel.c.
References ast_describe_caller_presentation(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_pres, manager_event(), ast_channel::name, S_OR, and ast_channel::uniqueid.
Referenced by ast_do_masquerade(), and ast_set_callerid().
03723 { 03724 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03725 "Channel: %s\r\n" 03726 "CallerID: %s\r\n" 03727 "CallerIDName: %s\r\n" 03728 "Uniqueid: %s\r\n" 03729 "CID-CallingPres: %d (%s)\r\n", 03730 chan->name, 03731 S_OR(chan->cid.cid_num, "<Unknown>"), 03732 S_OR(chan->cid.cid_name, "<Unknown>"), 03733 chan->uniqueid, 03734 chan->cid.cid_pres, 03735 ast_describe_caller_presentation(chan->cid.cid_pres) 03736 ); 03737 }
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 3034 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().
03036 { 03037 int native; 03038 int res; 03039 char from[200], to[200]; 03040 03041 /* Make sure we only consider audio */ 03042 fmt &= AST_FORMAT_AUDIO_MASK; 03043 03044 native = chan->nativeformats; 03045 /* Find a translation path from the native format to one of the desired formats */ 03046 if (!direction) 03047 /* reading */ 03048 res = ast_translator_best_choice(&fmt, &native); 03049 else 03050 /* writing */ 03051 res = ast_translator_best_choice(&native, &fmt); 03052 03053 if (res < 0) { 03054 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 03055 ast_getformatname_multiple(from, sizeof(from), native), 03056 ast_getformatname_multiple(to, sizeof(to), fmt)); 03057 return -1; 03058 } 03059 03060 /* Now we have a good choice for both. */ 03061 ast_channel_lock(chan); 03062 03063 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 03064 /* the channel is already in these formats, so nothing to do */ 03065 ast_channel_unlock(chan); 03066 return 0; 03067 } 03068 03069 *rawformat = native; 03070 /* User perspective is fmt */ 03071 *format = fmt; 03072 /* Free any read translation we have right now */ 03073 if (*trans) 03074 ast_translator_free_path(*trans); 03075 /* Build a translation path from the raw format to the desired format */ 03076 if (!direction) 03077 /* reading */ 03078 *trans = ast_translator_build_path(*format, *rawformat); 03079 else 03080 /* writing */ 03081 *trans = ast_translator_build_path(*rawformat, *format); 03082 ast_channel_unlock(chan); 03083 if (option_debug) 03084 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 03085 direction ? "write" : "read", ast_getformatname(fmt)); 03086 return 0; 03087 }
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 2032 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().
02033 { 02034 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF)) { 02035 /* We're in the middle of emulating a digit, or DTMF has been 02036 * explicitly deferred. Skip this digit, then. */ 02037 return 1; 02038 } 02039 02040 if (!ast_tvzero(chan->dtmf_tv) && 02041 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02042 /* We're not in the middle of a digit, but it hasn't been long enough 02043 * since the last digit, so we'll have to skip DTMF for now. */ 02044 return 1; 02045 } 02046 02047 return 0; 02048 }
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 4900 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04901 { 04902 short buf[samples]; 04903 struct ast_frame frame = { 04904 .frametype = AST_FRAME_VOICE, 04905 .subclass = AST_FORMAT_SLINEAR, 04906 .data = buf, 04907 .samples = samples, 04908 .datalen = sizeof(buf), 04909 }; 04910 memset(buf, 0, sizeof(buf)); 04911 if (ast_write(chan, &frame)) 04912 return -1; 04913 return 0; 04914 }
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 4653 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.
04654 { 04655 struct tonepair_state *ts; 04656 struct tonepair_def *td = params; 04657 04658 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04659 return NULL; 04660 ts->origwfmt = chan->writeformat; 04661 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04662 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04663 tonepair_release(NULL, ts); 04664 ts = NULL; 04665 } else { 04666 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04667 ts->v1_1 = 0; 04668 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04669 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04670 ts->v2_1 = 0; 04671 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04672 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04673 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04674 ts->duration = td->duration; 04675 ts->modulate = 0; 04676 } 04677 /* Let interrupts interrupt :) */ 04678 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04679 return ts; 04680 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4682 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.
04683 { 04684 struct tonepair_state *ts = data; 04685 int x; 04686 04687 /* we need to prepare a frame with 16 * timelen samples as we're 04688 * generating SLIN audio 04689 */ 04690 len = samples * 2; 04691 04692 if (len > sizeof(ts->data) / 2 - 1) { 04693 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04694 return -1; 04695 } 04696 memset(&ts->f, 0, sizeof(ts->f)); 04697 for (x=0;x<len/2;x++) { 04698 ts->v1_1 = ts->v2_1; 04699 ts->v2_1 = ts->v3_1; 04700 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04701 04702 ts->v1_2 = ts->v2_2; 04703 ts->v2_2 = ts->v3_2; 04704 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04705 if (ts->modulate) { 04706 int p; 04707 p = ts->v3_2 - 32768; 04708 if (p < 0) p = -p; 04709 p = ((p * 9) / 10) + 1; 04710 ts->data[x] = (ts->v3_1 * p) >> 15; 04711 } else 04712 ts->data[x] = ts->v3_1 + ts->v3_2; 04713 } 04714 ts->f.frametype = AST_FRAME_VOICE; 04715 ts->f.subclass = AST_FORMAT_SLINEAR; 04716 ts->f.datalen = len; 04717 ts->f.samples = samples; 04718 ts->f.offset = AST_FRIENDLY_OFFSET; 04719 ts->f.data = ts->data; 04720 ast_write(chan, &ts->f); 04721 ts->pos += x; 04722 if (ts->duration > 0) { 04723 if (ts->pos >= ts->duration * 8) 04724 return -1; 04725 } 04726 return 0; 04727 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4644 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04645 { 04646 struct tonepair_state *ts = params; 04647 04648 if (chan) 04649 ast_set_write_format(chan, ts->origwfmt); 04650 free(ts); 04651 }
static void update_bridgepeer | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) | [static] |
Definition at line 4300 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_strdupa, ast_strlen_zero(), ast_channel::name, pbx_builtin_getvar_helper(), and pbx_builtin_setvar_helper().
Referenced by ast_channel_bridge().
04301 { 04302 const char *c0_name; 04303 const char *c1_name; 04304 04305 ast_channel_lock(c1); 04306 c1_name = ast_strdupa(c1->name); 04307 ast_channel_unlock(c1); 04308 04309 ast_channel_lock(c0); 04310 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) { 04311 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1_name); 04312 } 04313 c0_name = ast_strdupa(c0->name); 04314 ast_channel_unlock(c0); 04315 04316 ast_channel_lock(c1); 04317 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) { 04318 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0_name); 04319 } 04320 ast_channel_unlock(c1); 04321 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4805 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 4803 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 4804 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 4916 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 4729 of file channel.c.
Referenced by ast_tonepair_start().