#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 898 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_NULL, AST_FRAME_VIDEO, 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_CURRENT, AST_LIST_TRAVERSE, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, 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().
00899 { 00900 struct ast_frame *f; 00901 struct ast_frame *cur; 00902 int blah = 1; 00903 unsigned int new_frames = 0; 00904 unsigned int new_voice_frames = 0; 00905 unsigned int queued_frames = 0; 00906 unsigned int queued_voice_frames = 0; 00907 AST_LIST_HEAD_NOLOCK(, ast_frame) frames; 00908 00909 ast_channel_lock(chan); 00910 00911 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00912 if ((cur = AST_LIST_LAST(&chan->readq)) && 00913 (cur->frametype == AST_FRAME_CONTROL) && 00914 (cur->subclass == AST_CONTROL_HANGUP)) { 00915 ast_channel_unlock(chan); 00916 return 0; 00917 } 00918 00919 /* Build copies of all the frames and count them */ 00920 AST_LIST_HEAD_INIT_NOLOCK(&frames); 00921 for (cur = fin; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 00922 if (!(f = ast_frdup(cur))) { 00923 ast_frfree(AST_LIST_FIRST(&frames)); 00924 ast_channel_unlock(chan); 00925 return -1; 00926 } 00927 00928 AST_LIST_INSERT_TAIL(&frames, f, frame_list); 00929 new_frames++; 00930 if (f->frametype == AST_FRAME_VOICE) { 00931 new_voice_frames++; 00932 } 00933 } 00934 00935 /* Count how many frames exist on the queue */ 00936 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00937 queued_frames++; 00938 if (cur->frametype == AST_FRAME_VOICE) { 00939 queued_voice_frames++; 00940 } 00941 } 00942 00943 if ((queued_frames + new_frames > 128 || queued_voice_frames + new_voice_frames > 96)) { 00944 int count = 0; 00945 ast_log(LOG_WARNING, "Exceptionally long %squeue length queuing to %s\n", queued_frames + new_frames > 128 ? "" : "voice ", chan->name); 00946 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->readq, cur, frame_list) { 00947 /* Save the most recent frame */ 00948 if (!AST_LIST_NEXT(cur, frame_list)) { 00949 break; 00950 } else if (cur->frametype == AST_FRAME_VOICE || cur->frametype == AST_FRAME_VIDEO || cur->frametype == AST_FRAME_NULL) { 00951 if (++count > 64) { 00952 break; 00953 } 00954 AST_LIST_REMOVE_CURRENT(&chan->readq, frame_list); 00955 ast_frfree(cur); 00956 } 00957 } 00958 AST_LIST_TRAVERSE_SAFE_END; 00959 } 00960 00961 if (after) { 00962 AST_LIST_INSERT_LIST_AFTER(&chan->readq, &frames, after, frame_list); 00963 } else { 00964 if (head) { 00965 AST_LIST_APPEND_LIST(&frames, &chan->readq, frame_list); 00966 AST_LIST_HEAD_INIT_NOLOCK(&chan->readq); 00967 } 00968 AST_LIST_APPEND_LIST(&chan->readq, &frames, frame_list); 00969 } 00970 00971 if (chan->alertpipe[1] > -1) { 00972 if (write(chan->alertpipe[1], &blah, new_frames * sizeof(blah)) != (new_frames * sizeof(blah))) { 00973 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s (qlen = %d): %s!\n", 00974 chan->name, queued_frames, strerror(errno)); 00975 } 00976 #ifdef HAVE_DAHDI 00977 } else if (chan->timingfd > -1) { 00978 while (new_frames--) { 00979 ioctl(chan->timingfd, DAHDI_TIMERPING, &blah); 00980 } 00981 #endif 00982 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00983 pthread_kill(chan->blocker, SIGURG); 00984 } 00985 00986 ast_channel_unlock(chan); 00987 00988 return 0; 00989 }
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 2068 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_CONTROL_HOLD, 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().
02069 { 02070 struct ast_frame *f = NULL; /* the return value */ 02071 int blah; 02072 int prestate; 02073 int count = 0; 02074 02075 /* this function is very long so make sure there is only one return 02076 * point at the end (there are only two exceptions to this). 02077 */ 02078 while(ast_channel_trylock(chan)) { 02079 if(count++ > 10) 02080 /*cannot goto done since the channel is not locked*/ 02081 return &ast_null_frame; 02082 usleep(1); 02083 } 02084 02085 if (chan->masq) { 02086 if (ast_do_masquerade(chan)) 02087 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02088 else 02089 f = &ast_null_frame; 02090 goto done; 02091 } 02092 02093 /* Stop if we're a zombie or need a soft hangup */ 02094 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02095 if (chan->generator) 02096 ast_deactivate_generator(chan); 02097 goto done; 02098 } 02099 02100 #ifdef AST_DEVMODE 02101 /* 02102 * The ast_waitfor() code records which of the channel's file descriptors reported that 02103 * data is available. In theory, ast_read() should only be called after ast_waitfor() 02104 * reports that a channel has data available for reading. However, there still may be 02105 * some edge cases throughout the code where ast_read() is called improperly. This can 02106 * potentially cause problems, so if this is a developer build, make a lot of noise if 02107 * this happens so that it can be addressed. 02108 */ 02109 if (chan->fdno == -1) { 02110 ast_log(LOG_ERROR, "ast_read() called with no recorded file descriptor.\n"); 02111 } 02112 #endif 02113 02114 prestate = chan->_state; 02115 02116 /* Read and ignore anything on the alertpipe, but read only 02117 one sizeof(blah) per frame that we send from it */ 02118 if (chan->alertpipe[0] > -1) { 02119 int flags = fcntl(chan->alertpipe[0], F_GETFL); 02120 /* For some odd reason, the alertpipe occasionally loses nonblocking status, 02121 * which immediately causes a deadlock scenario. Detect and prevent this. */ 02122 if ((flags & O_NONBLOCK) == 0) { 02123 ast_log(LOG_ERROR, "Alertpipe on channel %s lost O_NONBLOCK?!!\n", chan->name); 02124 if (fcntl(chan->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 02125 ast_log(LOG_WARNING, "Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 02126 f = &ast_null_frame; 02127 goto done; 02128 } 02129 } 02130 if (read(chan->alertpipe[0], &blah, sizeof(blah)) < 0) { 02131 if (errno != EINTR && errno != EAGAIN) 02132 ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno)); 02133 } 02134 } 02135 02136 #ifdef HAVE_DAHDI 02137 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02138 int res; 02139 02140 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02141 blah = -1; 02142 /* IF we can't get event, assume it's an expired as-per the old interface */ 02143 res = ioctl(chan->timingfd, DAHDI_GETEVENT, &blah); 02144 if (res) 02145 blah = DAHDI_EVENT_TIMER_EXPIRED; 02146 02147 if (blah == DAHDI_EVENT_TIMER_PING) { 02148 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02149 /* Acknowledge PONG unless we need it again */ 02150 if (ioctl(chan->timingfd, DAHDI_TIMERPONG, &blah)) { 02151 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02152 } 02153 } 02154 } else if (blah == DAHDI_EVENT_TIMER_EXPIRED) { 02155 ioctl(chan->timingfd, DAHDI_TIMERACK, &blah); 02156 if (chan->timingfunc) { 02157 /* save a copy of func/data before unlocking the channel */ 02158 int (*func)(const void *) = chan->timingfunc; 02159 void *data = chan->timingdata; 02160 chan->fdno = -1; 02161 ast_channel_unlock(chan); 02162 func(data); 02163 } else { 02164 blah = 0; 02165 ioctl(chan->timingfd, DAHDI_TIMERCONFIG, &blah); 02166 chan->timingdata = NULL; 02167 chan->fdno = -1; 02168 ast_channel_unlock(chan); 02169 } 02170 /* cannot 'goto done' because the channel is already unlocked */ 02171 return &ast_null_frame; 02172 } else 02173 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02174 } else 02175 #endif 02176 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02177 /* if the AST_GENERATOR_FD is set, call the generator with args 02178 * set to -1 so it can do whatever it needs to. 02179 */ 02180 void *tmp = chan->generatordata; 02181 chan->generatordata = NULL; /* reset to let ast_write get through */ 02182 chan->generator->generate(chan, tmp, -1, -1); 02183 chan->generatordata = tmp; 02184 f = &ast_null_frame; 02185 chan->fdno = -1; 02186 goto done; 02187 } 02188 02189 /* Check for pending read queue */ 02190 if (!AST_LIST_EMPTY(&chan->readq)) { 02191 int skip_dtmf = should_skip_dtmf(chan); 02192 02193 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->readq, f, frame_list) { 02194 /* We have to be picky about which frame we pull off of the readq because 02195 * there are cases where we want to leave DTMF frames on the queue until 02196 * some later time. */ 02197 02198 if ( (f->frametype == AST_FRAME_DTMF_BEGIN || f->frametype == AST_FRAME_DTMF_END) && skip_dtmf) { 02199 continue; 02200 } 02201 02202 AST_LIST_REMOVE_CURRENT(&chan->readq, frame_list); 02203 break; 02204 } 02205 AST_LIST_TRAVERSE_SAFE_END; 02206 02207 if (!f) { 02208 /* There were no acceptable frames on the readq. */ 02209 f = &ast_null_frame; 02210 if (chan->alertpipe[0] > -1) { 02211 int poke = 0; 02212 /* Restore the state of the alertpipe since we aren't ready for any 02213 * of the frames in the readq. */ 02214 if (write(chan->alertpipe[1], &poke, sizeof(poke)) != sizeof(poke)) { 02215 ast_log(LOG_ERROR, "Failed to write to alertpipe: %s\n", strerror(errno)); 02216 } 02217 } 02218 } 02219 02220 /* Interpret hangup and return NULL */ 02221 /* XXX why not the same for frames from the channel ? */ 02222 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02223 ast_frfree(f); 02224 f = NULL; 02225 } 02226 } else { 02227 chan->blocker = pthread_self(); 02228 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02229 if (chan->tech->exception) 02230 f = chan->tech->exception(chan); 02231 else { 02232 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02233 f = &ast_null_frame; 02234 } 02235 /* Clear the exception flag */ 02236 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02237 } else if (chan->tech->read) 02238 f = chan->tech->read(chan); 02239 else 02240 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02241 } 02242 02243 /* 02244 * Reset the recorded file descriptor that triggered this read so that we can 02245 * easily detect when ast_read() is called without properly using ast_waitfor(). 02246 */ 02247 chan->fdno = -1; 02248 02249 if (f) { 02250 struct ast_frame *readq_tail = AST_LIST_LAST(&chan->readq); 02251 02252 /* if the channel driver returned more than one frame, stuff the excess 02253 into the readq for the next ast_read call 02254 */ 02255 if (AST_LIST_NEXT(f, frame_list)) { 02256 ast_queue_frame(chan, AST_LIST_NEXT(f, frame_list)); 02257 ast_frfree(AST_LIST_NEXT(f, frame_list)); 02258 AST_LIST_NEXT(f, frame_list) = NULL; 02259 } 02260 02261 switch (f->frametype) { 02262 case AST_FRAME_CONTROL: 02263 if (f->subclass == AST_CONTROL_ANSWER) { 02264 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02265 if (option_debug) 02266 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02267 ast_frfree(f); 02268 f = &ast_null_frame; 02269 } else if (prestate == AST_STATE_UP) { 02270 if (option_debug) 02271 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02272 ast_frfree(f); 02273 f = &ast_null_frame; 02274 } else { 02275 /* Answer the CDR */ 02276 ast_setstate(chan, AST_STATE_UP); 02277 /* removed a call to ast_cdr_answer(chan->cdr) from here. */ 02278 } 02279 } 02280 break; 02281 case AST_FRAME_DTMF_END: 02282 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02283 /* Queue it up if DTMF is deferred, or if DTMF emulation is forced. */ 02284 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02285 queue_dtmf_readq(chan, f); 02286 ast_frfree(f); 02287 f = &ast_null_frame; 02288 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02289 if (!ast_tvzero(chan->dtmf_tv) && 02290 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02291 /* If it hasn't been long enough, defer this digit */ 02292 queue_dtmf_readq(chan, f); 02293 ast_frfree(f); 02294 f = &ast_null_frame; 02295 } else { 02296 /* There was no begin, turn this into a begin and send the end later */ 02297 f->frametype = AST_FRAME_DTMF_BEGIN; 02298 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02299 chan->emulate_dtmf_digit = f->subclass; 02300 chan->dtmf_tv = ast_tvnow(); 02301 if (f->len) { 02302 if (f->len > AST_MIN_DTMF_DURATION) 02303 chan->emulate_dtmf_duration = f->len; 02304 else 02305 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02306 } else 02307 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02308 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02309 } 02310 if (chan->audiohooks) { 02311 struct ast_frame *old_frame = f; 02312 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02313 if (old_frame != f) 02314 ast_frfree(old_frame); 02315 } 02316 } else { 02317 struct timeval now = ast_tvnow(); 02318 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02319 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02320 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02321 if (!f->len) 02322 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02323 } else if (!f->len) { 02324 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02325 f->len = AST_MIN_DTMF_DURATION; 02326 } 02327 if (f->len < AST_MIN_DTMF_DURATION && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02328 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); 02329 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02330 chan->emulate_dtmf_digit = f->subclass; 02331 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02332 ast_frfree(f); 02333 f = &ast_null_frame; 02334 } else { 02335 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02336 if (f->len < AST_MIN_DTMF_DURATION) { 02337 f->len = AST_MIN_DTMF_DURATION; 02338 } 02339 chan->dtmf_tv = now; 02340 } 02341 if (chan->audiohooks) { 02342 struct ast_frame *old_frame = f; 02343 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02344 if (old_frame != f) 02345 ast_frfree(old_frame); 02346 } 02347 } 02348 break; 02349 case AST_FRAME_DTMF_BEGIN: 02350 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02351 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 02352 (!ast_tvzero(chan->dtmf_tv) && 02353 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02354 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02355 ast_frfree(f); 02356 f = &ast_null_frame; 02357 } else { 02358 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02359 chan->dtmf_tv = ast_tvnow(); 02360 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02361 } 02362 break; 02363 case AST_FRAME_NULL: 02364 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02365 * is reached , because we want to make sure we pass at least one 02366 * voice frame through before starting the next digit, to ensure a gap 02367 * between DTMF digits. */ 02368 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02369 struct timeval now = ast_tvnow(); 02370 if (!chan->emulate_dtmf_duration) { 02371 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02372 chan->emulate_dtmf_digit = 0; 02373 } else if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02374 chan->emulate_dtmf_duration = 0; 02375 ast_frfree(f); 02376 f = &chan->dtmff; 02377 f->frametype = AST_FRAME_DTMF_END; 02378 f->subclass = chan->emulate_dtmf_digit; 02379 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02380 chan->dtmf_tv = now; 02381 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02382 chan->emulate_dtmf_digit = 0; 02383 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02384 if (chan->audiohooks) { 02385 struct ast_frame *old_frame = f; 02386 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02387 if (old_frame != f) { 02388 ast_frfree(old_frame); 02389 } 02390 } 02391 } 02392 } 02393 break; 02394 case AST_FRAME_VOICE: 02395 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02396 * is reached , because we want to make sure we pass at least one 02397 * voice frame through before starting the next digit, to ensure a gap 02398 * between DTMF digits. */ 02399 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02400 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02401 chan->emulate_dtmf_digit = 0; 02402 } 02403 02404 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02405 if (dropaudio) 02406 ast_read_generator_actions(chan, f); 02407 ast_frfree(f); 02408 f = &ast_null_frame; 02409 } 02410 02411 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02412 struct timeval now = ast_tvnow(); 02413 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02414 chan->emulate_dtmf_duration = 0; 02415 ast_frfree(f); 02416 f = &chan->dtmff; 02417 f->frametype = AST_FRAME_DTMF_END; 02418 f->subclass = chan->emulate_dtmf_digit; 02419 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02420 chan->dtmf_tv = now; 02421 if (chan->audiohooks) { 02422 struct ast_frame *old_frame = f; 02423 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02424 if (old_frame != f) 02425 ast_frfree(old_frame); 02426 } 02427 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02428 } else { 02429 /* Drop voice frames while we're still in the middle of the digit */ 02430 ast_frfree(f); 02431 f = &ast_null_frame; 02432 } 02433 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02434 /* This frame is not one of the current native formats -- drop it on the floor */ 02435 char to[200]; 02436 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02437 chan->name, ast_getformatname(f->subclass), ast_getformatname_multiple(to, sizeof(to), chan->nativeformats)); 02438 ast_frfree(f); 02439 f = &ast_null_frame; 02440 } else if ((f->frametype == AST_FRAME_VOICE)) { 02441 if (chan->audiohooks) { 02442 struct ast_frame *old_frame = f; 02443 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02444 if (old_frame != f) 02445 ast_frfree(old_frame); 02446 } 02447 if (chan->monitor && chan->monitor->read_stream ) { 02448 /* XXX what does this do ? */ 02449 #ifndef MONITOR_CONSTANT_DELAY 02450 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02451 if (jump >= 0) { 02452 jump = chan->outsmpl - chan->insmpl; 02453 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02454 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02455 chan->insmpl += jump + f->samples; 02456 } else 02457 chan->insmpl+= f->samples; 02458 #else 02459 int jump = chan->outsmpl - chan->insmpl; 02460 if (jump - MONITOR_DELAY >= 0) { 02461 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02462 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02463 chan->insmpl += jump; 02464 } else 02465 chan->insmpl += f->samples; 02466 #endif 02467 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02468 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02469 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02470 } 02471 } 02472 02473 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) { 02474 f = &ast_null_frame; 02475 } 02476 02477 /* it is possible for the translation process on chan->readtrans to have 02478 produced multiple frames from the single input frame we passed it; if 02479 this happens, queue the additional frames *before* the frames we may 02480 have queued earlier. if the readq was empty, put them at the head of 02481 the queue, and if it was not, put them just after the frame that was 02482 at the end of the queue. 02483 */ 02484 if (AST_LIST_NEXT(f, frame_list)) { 02485 if (!readq_tail) { 02486 ast_queue_frame_head(chan, AST_LIST_NEXT(f, frame_list)); 02487 } else { 02488 __ast_queue_frame(chan, AST_LIST_NEXT(f, frame_list), 0, readq_tail); 02489 } 02490 ast_frfree(AST_LIST_NEXT(f, frame_list)); 02491 AST_LIST_NEXT(f, frame_list) = NULL; 02492 } 02493 02494 /* Run generator sitting on the line if timing device not available 02495 * and synchronous generation of outgoing frames is necessary */ 02496 ast_read_generator_actions(chan, f); 02497 } 02498 default: 02499 /* Just pass it on! */ 02500 break; 02501 } 02502 } else { 02503 /* Make sure we always return NULL in the future */ 02504 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02505 if (chan->generator) 02506 ast_deactivate_generator(chan); 02507 /* We no longer End the CDR here */ 02508 } 02509 02510 /* High bit prints debugging */ 02511 if (chan->fin & DEBUGCHAN_FLAG) 02512 ast_frame_dump(chan->name, f, "<<"); 02513 chan->fin = FRAMECOUNT_INC(chan->fin); 02514 02515 if (f && f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HOLD && f->datalen == 0 && f->data) { 02516 /* fix invalid pointer */ 02517 f->data = NULL; 02518 #ifdef AST_DEVMODE 02519 ast_log(LOG_ERROR, "Found HOLD frame with src '%s' on channel '%s' with datalen zero, but non-null data pointer!\n", f->src, chan->name); 02520 ast_frame_dump(chan->name, f, "<<"); 02521 #else 02522 if (option_debug > 2) { 02523 ast_log(LOG_DEBUG, "Found HOLD frame with src '%s' on channel '%s' with datalen zero, but non-null data pointer!\n", f->src, chan->name); 02524 } 02525 #endif 02526 } 02527 02528 done: 02529 ast_channel_unlock(chan); 02530 return f; 02531 }
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 3269 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().
03270 { 03271 int dummy_outstate; 03272 int cause = 0; 03273 struct ast_channel *chan; 03274 int res = 0; 03275 int last_subclass = 0; 03276 03277 if (outstate) 03278 *outstate = 0; 03279 else 03280 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 03281 03282 chan = ast_request(type, format, data, &cause); 03283 if (!chan) { 03284 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 03285 handle_cause(cause, outstate); 03286 return NULL; 03287 } 03288 03289 if (oh) { 03290 if (oh->vars) 03291 ast_set_variables(chan, oh->vars); 03292 /* XXX why is this necessary, for the parent_channel perhaps ? */ 03293 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 03294 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 03295 if (oh->parent_channel) 03296 ast_channel_inherit_variables(oh->parent_channel, chan); 03297 if (oh->account) 03298 ast_cdr_setaccount(chan, oh->account); 03299 } 03300 ast_set_callerid(chan, cid_num, cid_name, cid_num); 03301 ast_set_flag(chan->cdr, AST_CDR_FLAG_ORIGINATED); 03302 03303 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 03304 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 03305 } else { 03306 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 03307 while (timeout && chan->_state != AST_STATE_UP) { 03308 struct ast_frame *f; 03309 res = ast_waitfor(chan, timeout); 03310 if (res == 0) { /* timeout, treat it like ringing */ 03311 *outstate = AST_CONTROL_RINGING; 03312 break; 03313 } 03314 if (res < 0) /* error or done */ 03315 break; 03316 if (timeout > -1) 03317 timeout = res; 03318 if (!ast_strlen_zero(chan->call_forward)) { 03319 if (!(chan = ast_call_forward(NULL, chan, &timeout, format, oh, outstate))) { 03320 return NULL; 03321 } 03322 continue; 03323 } 03324 03325 f = ast_read(chan); 03326 if (!f) { 03327 *outstate = AST_CONTROL_HANGUP; 03328 res = 0; 03329 break; 03330 } 03331 if (f->frametype == AST_FRAME_CONTROL) { 03332 switch (f->subclass) { 03333 case AST_CONTROL_RINGING: /* record but keep going */ 03334 *outstate = f->subclass; 03335 break; 03336 03337 case AST_CONTROL_BUSY: 03338 ast_cdr_busy(chan->cdr); 03339 *outstate = f->subclass; 03340 timeout = 0; 03341 break; 03342 03343 case AST_CONTROL_CONGESTION: 03344 ast_cdr_failed(chan->cdr); 03345 *outstate = f->subclass; 03346 timeout = 0; 03347 break; 03348 03349 case AST_CONTROL_ANSWER: 03350 ast_cdr_answer(chan->cdr); 03351 *outstate = f->subclass; 03352 timeout = 0; /* trick to force exit from the while() */ 03353 break; 03354 03355 /* Ignore these */ 03356 case AST_CONTROL_PROGRESS: 03357 case AST_CONTROL_PROCEEDING: 03358 case AST_CONTROL_HOLD: 03359 case AST_CONTROL_UNHOLD: 03360 case AST_CONTROL_VIDUPDATE: 03361 case AST_CONTROL_SRCUPDATE: 03362 case -1: /* Ignore -- just stopping indications */ 03363 break; 03364 03365 default: 03366 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 03367 } 03368 last_subclass = f->subclass; 03369 } 03370 ast_frfree(f); 03371 } 03372 } 03373 03374 /* Final fixups */ 03375 if (oh) { 03376 if (!ast_strlen_zero(oh->context)) 03377 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 03378 if (!ast_strlen_zero(oh->exten)) 03379 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 03380 if (oh->priority) 03381 chan->priority = oh->priority; 03382 } 03383 if (chan->_state == AST_STATE_UP) 03384 *outstate = AST_CONTROL_ANSWER; 03385 03386 if (res <= 0) { 03387 if ( AST_CONTROL_RINGING == last_subclass ) 03388 chan->hangupcause = AST_CAUSE_NO_ANSWER; 03389 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 03390 ast_cdr_init(chan->cdr, chan); 03391 if (chan->cdr) { 03392 char tmp[256]; 03393 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 03394 ast_cdr_setapp(chan->cdr,"Dial",tmp); 03395 ast_cdr_update(chan); 03396 ast_cdr_start(chan->cdr); 03397 ast_cdr_end(chan->cdr); 03398 /* If the cause wasn't handled properly */ 03399 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 03400 ast_cdr_failed(chan->cdr); 03401 } 03402 ast_hangup(chan); 03403 chan = NULL; 03404 } 03405 return chan; 03406 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1679 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().
01680 { 01681 int res = 0; 01682 01683 ast_channel_lock(chan); 01684 01685 if (chan->generatordata) { 01686 if (chan->generator && chan->generator->release) 01687 chan->generator->release(chan, chan->generatordata); 01688 chan->generatordata = NULL; 01689 } 01690 01691 ast_prod(chan); 01692 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01693 res = -1; 01694 } 01695 01696 if (!res) { 01697 ast_settimeout(chan, 160, generator_force, chan); 01698 chan->generator = gen; 01699 } 01700 01701 ast_channel_unlock(chan); 01702 01703 return res; 01704 }
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 1600 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().
01601 { 01602 int res = 0; 01603 ast_channel_lock(chan); 01604 /* You can't answer an outbound call */ 01605 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01606 ast_channel_unlock(chan); 01607 return 0; 01608 } 01609 /* Stop if we're a zombie or need a soft hangup */ 01610 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01611 ast_channel_unlock(chan); 01612 return -1; 01613 } 01614 switch(chan->_state) { 01615 case AST_STATE_RINGING: 01616 case AST_STATE_RING: 01617 if (chan->tech->answer) 01618 res = chan->tech->answer(chan); 01619 ast_setstate(chan, AST_STATE_UP); 01620 ast_cdr_answer(chan->cdr); 01621 break; 01622 case AST_STATE_UP: 01623 break; 01624 default: 01625 break; 01626 } 01627 ast_indicate(chan, -1); 01628 chan->visible_indication = 0; 01629 ast_channel_unlock(chan); 01630 return res; 01631 }
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 4156 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_attempt_transfer(), mixmonitor_thread(), park_call_full(), schedule_delivery(), sip_read(), sip_set_rtp_peer(), socket_process(), ss_thread(), start_spying(), and startmon().
04157 { 04158 struct ast_channel *bridged; 04159 bridged = chan->_bridge; 04160 if (bridged && bridged->tech->bridged_channel) 04161 bridged = bridged->tech->bridged_channel(chan, bridged); 04162 return bridged; 04163 }
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 3463 of file channel.c.
References AST_CDR_FLAG_DIALED, AST_CDR_FLAG_ORIGINATED, 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().
03464 { 03465 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03466 If the remote end does not answer within the timeout, then do NOT hang up, but 03467 return anyway. */ 03468 int res = -1; 03469 /* Stop if we're a zombie or need a soft hangup */ 03470 ast_channel_lock(chan); 03471 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03472 if (chan->cdr) { 03473 ast_set_flag(chan->cdr, AST_CDR_FLAG_DIALED); 03474 ast_set_flag(chan->cdr, AST_CDR_FLAG_ORIGINATED); 03475 } 03476 if (chan->tech->call) 03477 res = chan->tech->call(chan, addr, timeout); 03478 ast_set_flag(chan, AST_FLAG_OUTGOING); 03479 } 03480 ast_channel_unlock(chan); 03481 return res; 03482 }
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 3202 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().
03203 { 03204 char tmpchan[256]; 03205 struct ast_channel *new = NULL; 03206 char *data, *type; 03207 int cause = 0; 03208 03209 /* gather data and request the new forward channel */ 03210 ast_copy_string(tmpchan, orig->call_forward, sizeof(tmpchan)); 03211 if ((data = strchr(tmpchan, '/'))) { 03212 *data++ = '\0'; 03213 type = tmpchan; 03214 } else { 03215 const char *forward_context; 03216 ast_channel_lock(orig); 03217 forward_context = pbx_builtin_getvar_helper(orig, "FORWARD_CONTEXT"); 03218 snprintf(tmpchan, sizeof(tmpchan), "%s@%s", orig->call_forward, S_OR(forward_context, orig->context)); 03219 ast_channel_unlock(orig); 03220 data = tmpchan; 03221 type = "Local"; 03222 } 03223 if (!(new = ast_request(type, format, data, &cause))) { 03224 ast_log(LOG_NOTICE, "Unable to create channel for call forward to '%s/%s' (cause = %d)\n", type, data, cause); 03225 handle_cause(cause, outstate); 03226 ast_hangup(orig); 03227 return NULL; 03228 } 03229 03230 /* Copy/inherit important information into new channel */ 03231 if (oh) { 03232 if (oh->vars) { 03233 ast_set_variables(new, oh->vars); 03234 } 03235 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) { 03236 ast_set_callerid(new, oh->cid_num, oh->cid_name, oh->cid_num); 03237 } 03238 if (oh->parent_channel) { 03239 ast_channel_inherit_variables(oh->parent_channel, new); 03240 ast_channel_datastore_inherit(oh->parent_channel, new); 03241 } 03242 if (oh->account) { 03243 ast_cdr_setaccount(new, oh->account); 03244 } 03245 } else if (caller) { /* no outgoing helper so use caller if avaliable */ 03246 ast_channel_inherit_variables(caller, new); 03247 ast_channel_datastore_inherit(caller, new); 03248 } 03249 03250 ast_channel_lock(orig); 03251 ast_string_field_set(new, accountcode, orig->accountcode); 03252 if (!ast_strlen_zero(orig->cid.cid_num) && !ast_strlen_zero(new->cid.cid_name)) { 03253 ast_set_callerid(new, orig->cid.cid_num, orig->cid.cid_name, orig->cid.cid_num); 03254 } 03255 ast_channel_unlock(orig); 03256 03257 /* call new channel */ 03258 if ((*timeout = ast_call(new, data, 0))) { 03259 ast_log(LOG_NOTICE, "Unable to call forward to channel %s/%s\n", type, (char *)data); 03260 ast_hangup(orig); 03261 ast_hangup(new); 03262 return NULL; 03263 } 03264 ast_hangup(orig); 03265 03266 return new; 03267 }
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 3715 of file channel.c.
References ast_string_field_set, manager_event(), ast_channel::name, name, and ast_channel::uniqueid.
03716 { 03717 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03718 ast_string_field_set(chan, name, newname); 03719 }
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! Try increasing max file descriptors with ulimit -n\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_set_flag(tmp, AST_FLAG_IN_CHANNEL_LIST); 00871 00872 AST_LIST_LOCK(&channels); 00873 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00874 AST_LIST_UNLOCK(&channels); 00875 00876 /*\!note 00877 * and now, since the channel structure is built, and has its name, let's 00878 * call the manager event generator with this Newchannel event. This is the 00879 * proper and correct place to make this call, but you sure do have to pass 00880 * a lot of data into this func to do it here! 00881 */ 00882 if (!ast_strlen_zero(name_fmt)) { 00883 manager_event(EVENT_FLAG_CALL, "Newchannel", 00884 "Channel: %s\r\n" 00885 "State: %s\r\n" 00886 "CallerIDNum: %s\r\n" 00887 "CallerIDName: %s\r\n" 00888 "Uniqueid: %s\r\n", 00889 tmp->name, ast_state2str(state), 00890 S_OR(cid_num, "<unknown>"), 00891 S_OR(cid_name, "<unknown>"), 00892 tmp->uniqueid); 00893 } 00894 00895 return tmp; 00896 }
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 4398 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().
04400 { 04401 struct ast_channel *who = NULL; 04402 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04403 int nativefailed=0; 04404 int firstpass; 04405 int o0nativeformats; 04406 int o1nativeformats; 04407 long time_left_ms=0; 04408 char caller_warning = 0; 04409 char callee_warning = 0; 04410 04411 if (c0->_bridge) { 04412 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04413 c0->name, c0->_bridge->name); 04414 return -1; 04415 } 04416 if (c1->_bridge) { 04417 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04418 c1->name, c1->_bridge->name); 04419 return -1; 04420 } 04421 04422 /* Stop if we're a zombie or need a soft hangup */ 04423 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04424 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 04425 return -1; 04426 04427 *fo = NULL; 04428 firstpass = config->firstpass; 04429 config->firstpass = 0; 04430 04431 if (ast_tvzero(config->start_time)) 04432 config->start_time = ast_tvnow(); 04433 time_left_ms = config->timelimit; 04434 04435 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 04436 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 04437 04438 if (config->start_sound && firstpass) { 04439 if (caller_warning) 04440 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 04441 if (callee_warning) 04442 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 04443 } 04444 04445 /* Keep track of bridge */ 04446 c0->_bridge = c1; 04447 c1->_bridge = c0; 04448 04449 /* \todo XXX here should check that cid_num is not NULL */ 04450 manager_event(EVENT_FLAG_CALL, "Link", 04451 "Channel1: %s\r\n" 04452 "Channel2: %s\r\n" 04453 "Uniqueid1: %s\r\n" 04454 "Uniqueid2: %s\r\n" 04455 "CallerID1: %s\r\n" 04456 "CallerID2: %s\r\n", 04457 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04458 04459 o0nativeformats = c0->nativeformats; 04460 o1nativeformats = c1->nativeformats; 04461 04462 if (config->feature_timer && !ast_tvzero(config->nexteventts)) { 04463 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 04464 } else if (config->timelimit && firstpass) { 04465 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04466 if (caller_warning || callee_warning) 04467 config->nexteventts = ast_tvsub(config->nexteventts, ast_samp2tv(config->play_warning, 1000)); 04468 } 04469 04470 if (!c0->tech->send_digit_begin) 04471 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 04472 if (!c1->tech->send_digit_begin) 04473 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 04474 04475 /* Before we enter in and bridge these two together tell them both the source of audio has changed */ 04476 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04477 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04478 04479 for (/* ever */;;) { 04480 struct timeval now = { 0, }; 04481 int to; 04482 04483 to = -1; 04484 04485 if (!ast_tvzero(config->nexteventts)) { 04486 now = ast_tvnow(); 04487 to = ast_tvdiff_ms(config->nexteventts, now); 04488 if (to <= 0) { 04489 if (!config->timelimit) { 04490 res = AST_BRIDGE_COMPLETE; 04491 break; 04492 } 04493 to = 0; 04494 } 04495 } 04496 04497 if (config->timelimit) { 04498 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04499 if (time_left_ms < to) 04500 to = time_left_ms; 04501 04502 if (time_left_ms <= 0) { 04503 if (caller_warning && config->end_sound) 04504 bridge_playfile(c0, c1, config->end_sound, 0); 04505 if (callee_warning && config->end_sound) 04506 bridge_playfile(c1, c0, config->end_sound, 0); 04507 *fo = NULL; 04508 if (who) 04509 *rc = who; 04510 res = 0; 04511 break; 04512 } 04513 04514 if (!to) { 04515 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning && ast_test_flag(config, AST_FEATURE_WARNING_ACTIVE)) { 04516 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04517 if (caller_warning) 04518 bridge_playfile(c0, c1, config->warning_sound, t); 04519 if (callee_warning) 04520 bridge_playfile(c1, c0, config->warning_sound, t); 04521 } 04522 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04523 config->nexteventts = ast_tvadd(config->nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04524 else 04525 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04526 } 04527 ast_clear_flag(config, AST_FEATURE_WARNING_ACTIVE); 04528 } 04529 04530 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04531 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04532 c0->_softhangup = 0; 04533 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04534 c1->_softhangup = 0; 04535 c0->_bridge = c1; 04536 c1->_bridge = c0; 04537 if (option_debug) 04538 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04539 continue; 04540 } 04541 04542 /* Stop if we're a zombie or need a soft hangup */ 04543 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04544 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04545 *fo = NULL; 04546 if (who) 04547 *rc = who; 04548 res = 0; 04549 if (option_debug) 04550 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", 04551 c0->name, c1->name, 04552 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04553 ast_check_hangup(c0) ? "Yes" : "No", 04554 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04555 ast_check_hangup(c1) ? "Yes" : "No"); 04556 break; 04557 } 04558 04559 update_bridgepeer(c0, c1); 04560 04561 if (c0->tech->bridge && 04562 (config->timelimit == 0) && 04563 (c0->tech->bridge == c1->tech->bridge) && 04564 !nativefailed && !c0->monitor && !c1->monitor && 04565 !c0->audiohooks && !c1->audiohooks && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04566 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04567 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04568 /* Looks like they share a bridge method and nothing else is in the way */ 04569 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04570 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04571 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04572 /* \todo XXX here should check that cid_num is not NULL */ 04573 manager_event(EVENT_FLAG_CALL, "Unlink", 04574 "Channel1: %s\r\n" 04575 "Channel2: %s\r\n" 04576 "Uniqueid1: %s\r\n" 04577 "Uniqueid2: %s\r\n" 04578 "CallerID1: %s\r\n" 04579 "CallerID2: %s\r\n", 04580 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04581 if (option_debug) 04582 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04583 04584 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04585 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04586 04587 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04588 continue; 04589 04590 c0->_bridge = NULL; 04591 c1->_bridge = NULL; 04592 04593 return res; 04594 } else { 04595 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04596 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04597 } 04598 switch (res) { 04599 case AST_BRIDGE_RETRY: 04600 if (config->play_warning) { 04601 ast_set_flag(config, AST_FEATURE_WARNING_ACTIVE); 04602 } 04603 continue; 04604 default: 04605 if (option_verbose > 2) 04606 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04607 c0->name, c1->name); 04608 /* fallthrough */ 04609 case AST_BRIDGE_FAILED_NOWARN: 04610 nativefailed++; 04611 break; 04612 } 04613 } 04614 04615 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04616 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04617 !(c0->generator || c1->generator)) { 04618 if (ast_channel_make_compatible(c0, c1)) { 04619 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04620 /* \todo XXX here should check that cid_num is not NULL */ 04621 manager_event(EVENT_FLAG_CALL, "Unlink", 04622 "Channel1: %s\r\n" 04623 "Channel2: %s\r\n" 04624 "Uniqueid1: %s\r\n" 04625 "Uniqueid2: %s\r\n" 04626 "CallerID1: %s\r\n" 04627 "CallerID2: %s\r\n", 04628 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04629 return AST_BRIDGE_FAILED; 04630 } 04631 o0nativeformats = c0->nativeformats; 04632 o1nativeformats = c1->nativeformats; 04633 } 04634 04635 update_bridgepeer(c0, c1); 04636 04637 res = ast_generic_bridge(c0, c1, config, fo, rc, config->nexteventts); 04638 if (res != AST_BRIDGE_RETRY) { 04639 break; 04640 } else if (config->feature_timer) { 04641 /* feature timer expired but has not been updated, sending to ast_bridge_call to do so */ 04642 break; 04643 } 04644 } 04645 04646 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04647 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04648 04649 /* Now that we have broken the bridge the source will change yet again */ 04650 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04651 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04652 04653 c0->_bridge = NULL; 04654 c1->_bridge = NULL; 04655 04656 /* \todo XXX here should check that cid_num is not NULL */ 04657 manager_event(EVENT_FLAG_CALL, "Unlink", 04658 "Channel1: %s\r\n" 04659 "Channel2: %s\r\n" 04660 "Uniqueid1: %s\r\n" 04661 "Uniqueid2: %s\r\n" 04662 "CallerID1: %s\r\n" 04663 "CallerID2: %s\r\n", 04664 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04665 if (option_debug) 04666 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04667 04668 return res; 04669 }
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 1405 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().
01406 { 01407 int res = 0; 01408 01409 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01410 01411 return res; 01412 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1344 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().
01345 { 01346 struct ast_datastore *datastore = NULL; 01347 01348 /* Make sure we at least have type so we can identify this */ 01349 if (info == NULL) { 01350 return NULL; 01351 } 01352 01353 /* Allocate memory for datastore and clear it */ 01354 datastore = ast_calloc(1, sizeof(*datastore)); 01355 if (datastore == NULL) { 01356 return NULL; 01357 } 01358 01359 datastore->info = info; 01360 01361 datastore->uid = ast_strdup(uid); 01362 01363 return datastore; 01364 }
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 1432 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().
01433 { 01434 struct ast_datastore *datastore = NULL; 01435 01436 if (info == NULL) 01437 return NULL; 01438 01439 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01440 if (datastore->info == info) { 01441 if (uid != NULL && datastore->uid != NULL) { 01442 if (!strcasecmp(uid, datastore->uid)) { 01443 /* Matched by type AND uid */ 01444 break; 01445 } 01446 } else { 01447 /* Matched by type at least */ 01448 break; 01449 } 01450 } 01451 } 01452 AST_LIST_TRAVERSE_SAFE_END 01453 01454 return datastore; 01455 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1366 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(), stop_mixmonitor_exec(), and try_calling().
01367 { 01368 int res = 0; 01369 01370 /* Using the destroy function (if present) destroy the data */ 01371 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01372 datastore->info->destroy(datastore->data); 01373 datastore->data = NULL; 01374 } 01375 01376 /* Free allocated UID memory */ 01377 if (datastore->uid != NULL) { 01378 free(datastore->uid); 01379 datastore->uid = NULL; 01380 } 01381 01382 /* Finally free memory used by ourselves */ 01383 free(datastore); 01384 01385 return res; 01386 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1388 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(), findmeexec(), local_call(), ring_entry(), and wait_for_answer().
01389 { 01390 struct ast_datastore *datastore = NULL, *datastore2; 01391 01392 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01393 if (datastore->inheritance > 0) { 01394 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01395 if (datastore2) { 01396 datastore2->data = datastore->info->duplicate ? datastore->info->duplicate(datastore->data) : NULL; 01397 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01398 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01399 } 01400 } 01401 } 01402 return 0; 01403 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1414 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(), stop_mixmonitor_exec(), and try_calling().
01415 { 01416 struct ast_datastore *datastore2 = NULL; 01417 int res = -1; 01418 01419 /* Find our position and remove ourselves */ 01420 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01421 if (datastore2 == datastore) { 01422 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01423 res = 0; 01424 break; 01425 } 01426 } 01427 AST_LIST_TRAVERSE_SAFE_END 01428 01429 return res; 01430 }
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 1037 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
01038 { 01039 int pre = 0; 01040 01041 if (chan) { 01042 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 01043 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 01044 } 01045 return pre; 01046 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1244 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_FLAG_IN_CHANNEL_LIST, 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_test_flag, 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_DEBUG, ast_channel::monitor, ast_channel::music_state, name, ast_channel::name, option_debug, 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().
01245 { 01246 int fd; 01247 struct ast_var_t *vardata; 01248 struct ast_frame *f; 01249 struct varshead *headp; 01250 struct ast_datastore *datastore = NULL; 01251 char name[AST_CHANNEL_NAME], *dashptr; 01252 int inlist; 01253 01254 headp=&chan->varshead; 01255 01256 inlist = ast_test_flag(chan, AST_FLAG_IN_CHANNEL_LIST); 01257 if (inlist) { 01258 AST_LIST_LOCK(&channels); 01259 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01260 if (option_debug) 01261 ast_log(LOG_DEBUG, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01262 } 01263 /* Lock and unlock the channel just to be sure nobody has it locked still 01264 due to a reference retrieved from the channel list. */ 01265 ast_channel_lock(chan); 01266 ast_channel_unlock(chan); 01267 } 01268 01269 /* Get rid of each of the data stores on the channel */ 01270 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01271 /* Free the data store */ 01272 ast_channel_datastore_free(datastore); 01273 01274 /* Lock and unlock the channel just to be sure nobody has it locked still 01275 due to a reference that was stored in a datastore. (i.e. app_chanspy) */ 01276 ast_channel_lock(chan); 01277 ast_channel_unlock(chan); 01278 01279 if (chan->tech_pvt) { 01280 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01281 free(chan->tech_pvt); 01282 } 01283 01284 if (chan->sched) 01285 sched_context_destroy(chan->sched); 01286 01287 ast_copy_string(name, chan->name, sizeof(name)); 01288 if ((dashptr = strrchr(name, '-'))) { 01289 *dashptr = '\0'; 01290 } 01291 01292 /* Stop monitoring */ 01293 if (chan->monitor) 01294 chan->monitor->stop( chan, 0 ); 01295 01296 /* If there is native format music-on-hold state, free it */ 01297 if (chan->music_state) 01298 ast_moh_cleanup(chan); 01299 01300 /* Free translators */ 01301 if (chan->readtrans) 01302 ast_translator_free_path(chan->readtrans); 01303 if (chan->writetrans) 01304 ast_translator_free_path(chan->writetrans); 01305 if (chan->pbx) 01306 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01307 free_cid(&chan->cid); 01308 /* Close pipes if appropriate */ 01309 if ((fd = chan->alertpipe[0]) > -1) 01310 close(fd); 01311 if ((fd = chan->alertpipe[1]) > -1) 01312 close(fd); 01313 if ((fd = chan->timingfd) > -1) 01314 close(fd); 01315 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01316 ast_frfree(f); 01317 01318 /* loop over the variables list, freeing all data and deleting list items */ 01319 /* no need to lock the list, as the channel is already locked */ 01320 01321 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01322 ast_var_delete(vardata); 01323 01324 ast_app_group_discard(chan); 01325 01326 /* Destroy the jitterbuffer */ 01327 ast_jb_destroy(chan); 01328 01329 if (chan->cdr) { 01330 ast_cdr_discard(chan->cdr); 01331 chan->cdr = NULL; 01332 } 01333 01334 ast_mutex_destroy(&chan->lock); 01335 01336 ast_string_field_free_memory(chan); 01337 free(chan); 01338 if (inlist) 01339 AST_LIST_UNLOCK(&channels); 01340 01341 ast_device_state_changed_literal(name); 01342 }
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 3721 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().
03722 { 03723 struct ast_var_t *current, *newvar; 03724 const char *varname; 03725 03726 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03727 int vartype = 0; 03728 03729 varname = ast_var_full_name(current); 03730 if (!varname) 03731 continue; 03732 03733 if (varname[0] == '_') { 03734 vartype = 1; 03735 if (varname[1] == '_') 03736 vartype = 2; 03737 } 03738 03739 switch (vartype) { 03740 case 1: 03741 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03742 if (newvar) { 03743 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03744 if (option_debug) 03745 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03746 } 03747 break; 03748 case 2: 03749 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03750 if (newvar) { 03751 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03752 if (option_debug) 03753 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03754 } 03755 break; 03756 default: 03757 if (option_debug) 03758 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03759 break; 03760 } 03761 } 03762 }
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 3574 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().
03575 { 03576 int src; 03577 int dst; 03578 03579 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03580 /* Already compatible! Moving on ... */ 03581 return 0; 03582 } 03583 03584 /* Set up translation from the chan to the peer */ 03585 src = chan->nativeformats; 03586 dst = peer->nativeformats; 03587 if (ast_translator_best_choice(&dst, &src) < 0) { 03588 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03589 return -1; 03590 } 03591 03592 /* if the best path is not 'pass through', then 03593 transcoding is needed; if desired, force transcode path 03594 to use SLINEAR between channels, but only if there is 03595 no direct conversion available */ 03596 if ((src != dst) && ast_opt_transcode_via_slin && 03597 (ast_translate_path_steps(dst, src) != 1)) 03598 dst = AST_FORMAT_SLINEAR; 03599 if (ast_set_read_format(chan, dst) < 0) { 03600 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03601 return -1; 03602 } 03603 if (ast_set_write_format(peer, dst) < 0) { 03604 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03605 return -1; 03606 } 03607 03608 /* Set up translation from the peer to the chan */ 03609 src = peer->nativeformats; 03610 dst = chan->nativeformats; 03611 if (ast_translator_best_choice(&dst, &src) < 0) { 03612 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03613 return -1; 03614 } 03615 03616 /* if the best path is not 'pass through', then 03617 transcoding is needed; if desired, force transcode path 03618 to use SLINEAR between channels, but only if there is 03619 no direct conversion available */ 03620 if ((src != dst) && ast_opt_transcode_via_slin && 03621 (ast_translate_path_steps(dst, src) != 1)) 03622 dst = AST_FORMAT_SLINEAR; 03623 if (ast_set_read_format(peer, dst) < 0) { 03624 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03625 return -1; 03626 } 03627 if (ast_set_write_format(chan, dst) < 0) { 03628 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03629 return -1; 03630 } 03631 return 0; 03632 }
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 3634 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_attempt_transfer(), pickup_do(), and sip_park().
03635 { 03636 int res = -1; 03637 struct ast_channel *final_orig, *final_clone, *base; 03638 03639 retrymasq: 03640 final_orig = original; 03641 final_clone = clone; 03642 03643 ast_channel_lock(original); 03644 while (ast_channel_trylock(clone)) { 03645 ast_channel_unlock(original); 03646 usleep(1); 03647 ast_channel_lock(original); 03648 } 03649 03650 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03651 and if so, we don't really want to masquerade it, but its proxy */ 03652 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03653 final_orig = original->_bridge; 03654 03655 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03656 final_clone = clone->_bridge; 03657 03658 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03659 final_clone = base; 03660 } 03661 03662 if ((final_orig != original) || (final_clone != clone)) { 03663 /* Lots and lots of deadlock avoidance. The main one we're competing with 03664 * is ast_write(), which locks channels recursively, when working with a 03665 * proxy channel. */ 03666 if (ast_channel_trylock(final_orig)) { 03667 ast_channel_unlock(clone); 03668 ast_channel_unlock(original); 03669 goto retrymasq; 03670 } 03671 if (ast_channel_trylock(final_clone)) { 03672 ast_channel_unlock(final_orig); 03673 ast_channel_unlock(clone); 03674 ast_channel_unlock(original); 03675 goto retrymasq; 03676 } 03677 ast_channel_unlock(clone); 03678 ast_channel_unlock(original); 03679 original = final_orig; 03680 clone = final_clone; 03681 } 03682 03683 if (original == clone) { 03684 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03685 ast_channel_unlock(clone); 03686 ast_channel_unlock(original); 03687 return -1; 03688 } 03689 03690 if (option_debug) 03691 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03692 clone->name, original->name); 03693 if (original->masq) { 03694 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03695 original->masq->name, original->name); 03696 } else if (clone->masqr) { 03697 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03698 clone->name, clone->masqr->name); 03699 } else { 03700 original->masq = clone; 03701 clone->masqr = original; 03702 ast_queue_frame(original, &ast_null_frame); 03703 ast_queue_frame(clone, &ast_null_frame); 03704 if (option_debug) 03705 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03706 res = 0; 03707 } 03708 03709 ast_channel_unlock(clone); 03710 ast_channel_unlock(original); 03711 03712 return res; 03713 }
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 3166 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().
03167 { 03168 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 03169 { 03170 case 0: 03171 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 03172 case AST_CONTROL_HANGUP: 03173 return "Hangup"; 03174 case AST_CONTROL_RING: 03175 return "Local Ring"; 03176 case AST_CONTROL_RINGING: 03177 return "Remote end Ringing"; 03178 case AST_CONTROL_ANSWER: 03179 return "Remote end has Answered"; 03180 case AST_CONTROL_BUSY: 03181 return "Remote end is Busy"; 03182 case AST_CONTROL_CONGESTION: 03183 return "Congestion (circuits busy)"; 03184 default: 03185 return "Unknown Reason!!"; 03186 } 03187 }
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 3562 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().
03563 { 03564 if (chan->tech->send_html) 03565 return chan->tech->send_html(chan, subclass, data, datalen); 03566 return -1; 03567 }
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 3569 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec().
03570 { 03571 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03572 }
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 4672 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().
04673 { 04674 int res; 04675 04676 if (chan->tech->setoption) { 04677 res = chan->tech->setoption(chan, option, data, datalen); 04678 if (res < 0) 04679 return res; 04680 } else { 04681 errno = ENOSYS; 04682 return -1; 04683 } 04684 if (block) { 04685 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04686 intermediate packets. XXX */ 04687 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04688 return -1; 04689 } 04690 return 0; 04691 }
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 5000 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().
05001 { 05002 struct ast_silence_generator *state; 05003 05004 if (!(state = ast_calloc(1, sizeof(*state)))) { 05005 return NULL; 05006 } 05007 05008 state->old_write_format = chan->writeformat; 05009 05010 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 05011 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 05012 free(state); 05013 return NULL; 05014 } 05015 05016 ast_activate_generator(chan, &silence_generator, state); 05017 05018 if (option_debug) 05019 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 05020 05021 return state; 05022 }
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 5024 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().
05025 { 05026 if (!state) 05027 return; 05028 05029 ast_deactivate_generator(chan); 05030 05031 if (option_debug) 05032 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 05033 05034 if (ast_set_write_format(chan, state->old_write_format) < 0) 05035 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 05036 05037 free(state); 05038 }
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 3557 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 1049 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
01050 { 01051 if (chan) 01052 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 01053 }
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 1165 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().
01166 { 01167 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01168 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4924 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04925 { 04926 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04927 }
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 1633 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().
01634 { 01635 ast_channel_lock(chan); 01636 if (chan->generatordata) { 01637 if (chan->generator && chan->generator->release) 01638 chan->generator->release(chan, chan->generatordata); 01639 chan->generatordata = NULL; 01640 chan->generator = NULL; 01641 chan->fds[AST_GENERATOR_FD] = -1; 01642 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01643 ast_settimeout(chan, 0, NULL, NULL); 01644 } 01645 ast_channel_unlock(chan); 01646 }
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 3815 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, ast_channel::whentohangup, and ast_channel::writeformat.
Referenced by __ast_read(), ast_async_goto(), ast_hangup(), ast_waitfor_nandfds(), ast_write(), handle_invite_replaces(), iax_park(), sip_park(), and sip_park_thread().
03816 { 03817 int x,i; 03818 int res=0; 03819 int origstate; 03820 struct ast_frame *cur; 03821 const struct ast_channel_tech *t; 03822 void *t_pvt; 03823 struct ast_callerid tmpcid; 03824 struct ast_channel *clone = original->masq; 03825 struct ast_cdr *cdr; 03826 int rformat = original->readformat; 03827 int wformat = original->writeformat; 03828 char newn[100]; 03829 char orig[100]; 03830 char masqn[100]; 03831 char zombn[100]; 03832 03833 if (option_debug > 3) 03834 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03835 clone->name, clone->_state, original->name, original->_state); 03836 03837 /* XXX This operation is a bit odd. We're essentially putting the guts of 03838 * the clone channel into the original channel. Start by killing off the 03839 * original channel's backend. While the features are nice, which is the 03840 * reason we're keeping it, it's still awesomely weird. XXX */ 03841 03842 /* We need the clone's lock, too */ 03843 ast_channel_lock(clone); 03844 03845 if (option_debug > 1) 03846 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03847 03848 /* Having remembered the original read/write formats, we turn off any translation on either 03849 one */ 03850 free_translation(clone); 03851 free_translation(original); 03852 03853 03854 /* Unlink the masquerade */ 03855 original->masq = NULL; 03856 clone->masqr = NULL; 03857 03858 /* Save the original name */ 03859 ast_copy_string(orig, original->name, sizeof(orig)); 03860 /* Save the new name */ 03861 ast_copy_string(newn, clone->name, sizeof(newn)); 03862 /* Create the masq name */ 03863 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03864 03865 /* Copy the name from the clone channel */ 03866 ast_string_field_set(original, name, newn); 03867 03868 /* Mangle the name of the clone channel */ 03869 ast_string_field_set(clone, name, masqn); 03870 03871 /* Notify any managers of the change, first the masq then the other */ 03872 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 03873 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03874 03875 /* Swap the technologies */ 03876 t = original->tech; 03877 original->tech = clone->tech; 03878 clone->tech = t; 03879 03880 /* Swap the cdrs */ 03881 cdr = original->cdr; 03882 /* swap cdr uniqueid between channels, to get cdr uniqueid = channel uniqueid */ 03883 ast_copy_string(clone->cdr->uniqueid, cdr->uniqueid, sizeof(cdr->uniqueid)); 03884 original->cdr = clone->cdr; 03885 clone->cdr = cdr; 03886 03887 t_pvt = original->tech_pvt; 03888 original->tech_pvt = clone->tech_pvt; 03889 clone->tech_pvt = t_pvt; 03890 03891 /* Swap the alertpipes */ 03892 for (i = 0; i < 2; i++) { 03893 x = original->alertpipe[i]; 03894 original->alertpipe[i] = clone->alertpipe[i]; 03895 clone->alertpipe[i] = x; 03896 } 03897 03898 /* 03899 * Swap the readq's. The end result should be this: 03900 * 03901 * 1) All frames should be on the new (original) channel. 03902 * 2) Any frames that were already on the new channel before this 03903 * masquerade need to be at the end of the readq, after all of the 03904 * frames on the old (clone) channel. 03905 * 3) The alertpipe needs to get poked for every frame that was already 03906 * on the new channel, since we are now using the alert pipe from the 03907 * old (clone) channel. 03908 */ 03909 { 03910 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 03911 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 03912 03913 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 03914 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 03915 03916 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 03917 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 03918 if (original->alertpipe[1] > -1) { 03919 int poke = 0; 03920 03921 if (write(original->alertpipe[1], &poke, sizeof(poke)) < 0) { 03922 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 03923 } 03924 } 03925 } 03926 } 03927 03928 /* Swap the raw formats */ 03929 x = original->rawreadformat; 03930 original->rawreadformat = clone->rawreadformat; 03931 clone->rawreadformat = x; 03932 x = original->rawwriteformat; 03933 original->rawwriteformat = clone->rawwriteformat; 03934 clone->rawwriteformat = x; 03935 03936 clone->_softhangup = AST_SOFTHANGUP_DEV; 03937 03938 /* And of course, so does our current state. Note we need not 03939 call ast_setstate since the event manager doesn't really consider 03940 these separate. We do this early so that the clone has the proper 03941 state of the original channel. */ 03942 origstate = original->_state; 03943 original->_state = clone->_state; 03944 clone->_state = origstate; 03945 03946 if (clone->tech->fixup){ 03947 res = clone->tech->fixup(original, clone); 03948 if (res) 03949 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03950 } 03951 03952 /* Start by disconnecting the original's physical side */ 03953 if (clone->tech->hangup) 03954 res = clone->tech->hangup(clone); 03955 if (res) { 03956 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03957 ast_channel_unlock(clone); 03958 return -1; 03959 } 03960 03961 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03962 /* Mangle the name of the clone channel */ 03963 ast_string_field_set(clone, name, zombn); 03964 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03965 03966 /* Update the type. */ 03967 t_pvt = original->monitor; 03968 original->monitor = clone->monitor; 03969 clone->monitor = t_pvt; 03970 03971 /* Keep the same language. */ 03972 ast_string_field_set(original, language, clone->language); 03973 /* Copy the FD's other than the generator fd */ 03974 for (x = 0; x < AST_MAX_FDS; x++) { 03975 if (x != AST_GENERATOR_FD) 03976 original->fds[x] = clone->fds[x]; 03977 } 03978 03979 ast_app_group_update(clone, original); 03980 /* Move data stores over */ 03981 if (AST_LIST_FIRST(&clone->datastores)) { 03982 struct ast_datastore *ds; 03983 /* We use a safe traversal here because some fixup routines actually 03984 * remove the datastore from the list and free them. 03985 */ 03986 AST_LIST_TRAVERSE_SAFE_BEGIN(&clone->datastores, ds, entry) { 03987 if (ds->info->chan_fixup) 03988 ds->info->chan_fixup(ds->data, clone, original); 03989 } 03990 AST_LIST_TRAVERSE_SAFE_END; 03991 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 03992 } 03993 03994 clone_variables(original, clone); 03995 /* Presense of ADSI capable CPE follows clone */ 03996 original->adsicpe = clone->adsicpe; 03997 /* Bridge remains the same */ 03998 /* CDR fields remain the same */ 03999 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 04000 /* Application and data remain the same */ 04001 /* Clone exception becomes real one, as with fdno */ 04002 ast_set_flag(original, ast_test_flag(clone, AST_FLAG_OUTGOING | AST_FLAG_EXCEPTION)); 04003 original->fdno = clone->fdno; 04004 /* Schedule context remains the same */ 04005 /* Stream stuff stays the same */ 04006 /* Keep the original state. The fixup code will need to work with it most likely */ 04007 04008 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 04009 out. */ 04010 tmpcid = original->cid; 04011 original->cid = clone->cid; 04012 clone->cid = tmpcid; 04013 report_new_callerid(original); 04014 04015 /* Restore original timing file descriptor */ 04016 original->fds[AST_TIMING_FD] = original->timingfd; 04017 04018 /* Our native formats are different now */ 04019 original->nativeformats = clone->nativeformats; 04020 04021 /* Context, extension, priority, app data, jump table, remain the same */ 04022 /* pvt switches. pbx stays the same, as does next */ 04023 04024 /* Set the write format */ 04025 ast_set_write_format(original, wformat); 04026 04027 /* Set the read format */ 04028 ast_set_read_format(original, rformat); 04029 04030 /* Copy the music class */ 04031 ast_string_field_set(original, musicclass, clone->musicclass); 04032 04033 /* Copy whentohangup time */ 04034 original->whentohangup = clone->whentohangup; 04035 04036 if (option_debug) 04037 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 04038 04039 /* Okay. Last thing is to let the channel driver know about all this mess, so he 04040 can fix up everything as best as possible */ 04041 if (original->tech->fixup) { 04042 res = original->tech->fixup(clone, original); 04043 if (res) { 04044 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 04045 original->tech->type, original->name); 04046 ast_channel_unlock(clone); 04047 return -1; 04048 } 04049 } else 04050 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 04051 original->tech->type, original->name); 04052 04053 /* 04054 * If an indication is currently playing, maintain it on the channel 04055 * that is taking the place of original 04056 * 04057 * This is needed because the masquerade is swapping out in the internals 04058 * of this channel, and the new channel private data needs to be made 04059 * aware of the current visible indication (RINGING, CONGESTION, etc.) 04060 */ 04061 if (original->visible_indication) { 04062 ast_indicate(original, original->visible_indication); 04063 } 04064 04065 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 04066 a zombie so nothing tries to touch it. If it's already been marked as a 04067 zombie, then free it now (since it already is considered invalid). */ 04068 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 04069 if (option_debug) 04070 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 04071 ast_channel_unlock(clone); 04072 manager_event(EVENT_FLAG_CALL, "Hangup", 04073 "Channel: %s\r\n" 04074 "Uniqueid: %s\r\n" 04075 "Cause: %d\r\n" 04076 "Cause-txt: %s\r\n", 04077 clone->name, 04078 clone->uniqueid, 04079 clone->hangupcause, 04080 ast_cause2str(clone->hangupcause) 04081 ); 04082 ast_channel_free(clone); 04083 } else { 04084 if (option_debug) 04085 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 04086 ast_set_flag(clone, AST_FLAG_ZOMBIE); 04087 ast_queue_frame(clone, &ast_null_frame); 04088 ast_channel_unlock(clone); 04089 } 04090 04091 /* Signal any blocker */ 04092 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 04093 pthread_kill(original->blocker, SIGURG); 04094 if (option_debug) 04095 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 04096 return 0; 04097 }
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 4199 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().
04202 { 04203 /* Copy voice back and forth between the two channels. */ 04204 struct ast_channel *cs[3]; 04205 struct ast_frame *f; 04206 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04207 int o0nativeformats; 04208 int o1nativeformats; 04209 int watch_c0_dtmf; 04210 int watch_c1_dtmf; 04211 void *pvt0, *pvt1; 04212 /* Indicates whether a frame was queued into a jitterbuffer */ 04213 int frame_put_in_jb = 0; 04214 int jb_in_use; 04215 int to; 04216 04217 cs[0] = c0; 04218 cs[1] = c1; 04219 pvt0 = c0->tech_pvt; 04220 pvt1 = c1->tech_pvt; 04221 o0nativeformats = c0->nativeformats; 04222 o1nativeformats = c1->nativeformats; 04223 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 04224 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 04225 04226 /* Check the need of a jitterbuffer for each channel */ 04227 jb_in_use = ast_jb_do_usecheck(c0, c1); 04228 if (jb_in_use) 04229 ast_jb_empty_and_reset(c0, c1); 04230 04231 if (config->feature_timer > 0 && ast_tvzero(config->nexteventts)) { 04232 /* calculate when the bridge should possibly break 04233 * if a partial feature match timed out */ 04234 config->partialfeature_timer = ast_tvadd(ast_tvnow(), ast_samp2tv(config->feature_timer, 1000)); 04235 } else { 04236 memset(&config->partialfeature_timer, 0, sizeof(config->partialfeature_timer)); 04237 } 04238 04239 for (;;) { 04240 struct ast_channel *who, *other; 04241 04242 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 04243 (o0nativeformats != c0->nativeformats) || 04244 (o1nativeformats != c1->nativeformats)) { 04245 /* Check for Masquerade, codec changes, etc */ 04246 res = AST_BRIDGE_RETRY; 04247 break; 04248 } 04249 if (bridge_end.tv_sec) { 04250 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 04251 if (to <= 0) { 04252 if (config->timelimit) { 04253 res = AST_BRIDGE_RETRY; 04254 /* generic bridge ending to play warning */ 04255 ast_set_flag(config, AST_FEATURE_WARNING_ACTIVE); 04256 } else { 04257 res = AST_BRIDGE_COMPLETE; 04258 } 04259 break; 04260 } 04261 } else { 04262 /* If a feature has been started and the bridge is configured to 04263 * to not break, leave the channel bridge when the feature timer 04264 * time has elapsed so the DTMF will be sent to the other side. 04265 */ 04266 if (!ast_tvzero(config->partialfeature_timer)) { 04267 int diff = ast_tvdiff_ms(config->partialfeature_timer, ast_tvnow()); 04268 if (diff <= 0) { 04269 res = AST_BRIDGE_RETRY; 04270 break; 04271 } 04272 } 04273 to = -1; 04274 } 04275 /* Calculate the appropriate max sleep interval - in general, this is the time, 04276 left to the closest jb delivery moment */ 04277 if (jb_in_use) 04278 to = ast_jb_get_when_to_wakeup(c0, c1, to); 04279 who = ast_waitfor_n(cs, 2, &to); 04280 if (!who) { 04281 /* No frame received within the specified timeout - check if we have to deliver now */ 04282 if (jb_in_use) 04283 ast_jb_get_and_deliver(c0, c1); 04284 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04285 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04286 c0->_softhangup = 0; 04287 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04288 c1->_softhangup = 0; 04289 c0->_bridge = c1; 04290 c1->_bridge = c0; 04291 } 04292 continue; 04293 } 04294 f = ast_read(who); 04295 if (!f) { 04296 *fo = NULL; 04297 *rc = who; 04298 if (option_debug) 04299 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 04300 break; 04301 } 04302 04303 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 04304 /* Try add the frame info the who's bridged channel jitterbuff */ 04305 if (jb_in_use) 04306 frame_put_in_jb = !ast_jb_put(other, f); 04307 04308 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 04309 int bridge_exit = 0; 04310 04311 switch (f->subclass) { 04312 case AST_CONTROL_HOLD: 04313 case AST_CONTROL_UNHOLD: 04314 case AST_CONTROL_VIDUPDATE: 04315 case AST_CONTROL_SRCUPDATE: 04316 ast_indicate_data(other, f->subclass, f->data, f->datalen); 04317 if (jb_in_use) { 04318 ast_jb_empty_and_reset(c0, c1); 04319 } 04320 break; 04321 default: 04322 *fo = f; 04323 *rc = who; 04324 bridge_exit = 1; 04325 if (option_debug) 04326 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 04327 break; 04328 } 04329 if (bridge_exit) 04330 break; 04331 } 04332 if ((f->frametype == AST_FRAME_VOICE) || 04333 (f->frametype == AST_FRAME_DTMF_BEGIN) || 04334 (f->frametype == AST_FRAME_DTMF) || 04335 (f->frametype == AST_FRAME_VIDEO) || 04336 (f->frametype == AST_FRAME_IMAGE) || 04337 (f->frametype == AST_FRAME_HTML) || 04338 (f->frametype == AST_FRAME_MODEM) || 04339 (f->frametype == AST_FRAME_TEXT)) { 04340 /* monitored dtmf causes exit from bridge */ 04341 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 04342 04343 if (monitored_source && 04344 (f->frametype == AST_FRAME_DTMF_END || 04345 f->frametype == AST_FRAME_DTMF_BEGIN)) { 04346 *fo = f; 04347 *rc = who; 04348 if (option_debug) 04349 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 04350 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 04351 who->name); 04352 04353 break; 04354 } 04355 /* Write immediately frames, not passed through jb */ 04356 if (!frame_put_in_jb) 04357 ast_write(other, f); 04358 04359 /* Check if we have to deliver now */ 04360 if (jb_in_use) 04361 ast_jb_get_and_deliver(c0, c1); 04362 } 04363 /* XXX do we want to pass on also frames not matched above ? */ 04364 ast_frfree(f); 04365 04366 /* Swap who gets priority */ 04367 cs[2] = cs[0]; 04368 cs[0] = cs[1]; 04369 cs[1] = cs[2]; 04370 } 04371 return res; 04372 }
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 1190 of file channel.c.
References channel_find_locked().
01191 { 01192 return channel_find_locked(NULL, NULL, 0, context, exten); 01193 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1171 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().
01172 { 01173 return channel_find_locked(NULL, name, 0, NULL, NULL); 01174 }
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 1177 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01178 { 01179 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01180 }
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 4845 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().
04846 { 04847 char *piece; 04848 char *c; 04849 int start=0, finish=0, x; 04850 ast_group_t group = 0; 04851 04852 if (ast_strlen_zero(s)) 04853 return 0; 04854 04855 c = ast_strdupa(s); 04856 04857 while ((piece = strsep(&c, ","))) { 04858 if (sscanf(piece, "%30d-%30d", &start, &finish) == 2) { 04859 /* Range */ 04860 } else if (sscanf(piece, "%30d", &start)) { 04861 /* Just one */ 04862 finish = start; 04863 } else { 04864 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04865 continue; 04866 } 04867 for (x = start; x <= finish; x++) { 04868 if ((x > 63) || (x < 0)) { 04869 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04870 } else 04871 group |= ((ast_group_t) 1 << x); 04872 } 04873 } 04874 return group; 04875 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1494 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_clear_flag, ast_closestream(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_IN_CHANNEL_LIST, AST_FLAG_ZOMBIE, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, 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, LOG_ERROR, 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().
01495 { 01496 int res = 0; 01497 01498 /* Don't actually hang up a channel that will masquerade as someone else, or 01499 if someone is going to masquerade as us */ 01500 ast_channel_lock(chan); 01501 01502 if (chan->audiohooks) { 01503 ast_audiohook_detach_list(chan->audiohooks); 01504 chan->audiohooks = NULL; 01505 } 01506 01507 ast_autoservice_stop(chan); 01508 01509 if (chan->masq) { 01510 if (ast_do_masquerade(chan)) 01511 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01512 } 01513 01514 if (chan->masq) { 01515 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01516 ast_channel_unlock(chan); 01517 return 0; 01518 } 01519 /* If this channel is one which will be masqueraded into something, 01520 mark it as a zombie already, so we know to free it later */ 01521 if (chan->masqr) { 01522 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01523 ast_channel_unlock(chan); 01524 return 0; 01525 } 01526 ast_channel_unlock(chan); 01527 01528 AST_LIST_LOCK(&channels); 01529 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01530 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01531 } 01532 ast_clear_flag(chan, AST_FLAG_IN_CHANNEL_LIST); 01533 AST_LIST_UNLOCK(&channels); 01534 01535 ast_channel_lock(chan); 01536 free_translation(chan); 01537 /* Close audio stream */ 01538 if (chan->stream) { 01539 ast_closestream(chan->stream); 01540 chan->stream = NULL; 01541 } 01542 /* Close video stream */ 01543 if (chan->vstream) { 01544 ast_closestream(chan->vstream); 01545 chan->vstream = NULL; 01546 } 01547 if (chan->sched) { 01548 sched_context_destroy(chan->sched); 01549 chan->sched = NULL; 01550 } 01551 01552 if (chan->generatordata) /* Clear any tone stuff remaining */ 01553 chan->generator->release(chan, chan->generatordata); 01554 chan->generatordata = NULL; 01555 chan->generator = NULL; 01556 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01557 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01558 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01559 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01560 ast_assert(ast_test_flag(chan, AST_FLAG_BLOCKING) == 0); 01561 } 01562 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01563 if (option_debug) 01564 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01565 if (chan->tech->hangup) 01566 res = chan->tech->hangup(chan); 01567 } else { 01568 if (option_debug) 01569 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01570 } 01571 01572 ast_channel_unlock(chan); 01573 manager_event(EVENT_FLAG_CALL, "Hangup", 01574 "Channel: %s\r\n" 01575 "Uniqueid: %s\r\n" 01576 "Cause: %d\r\n" 01577 "Cause-txt: %s\r\n", 01578 chan->name, 01579 chan->uniqueid, 01580 chan->hangupcause, 01581 ast_cause2str(chan->hangupcause) 01582 ); 01583 01584 if (chan->cdr && !ast_test_flag(chan->cdr, AST_CDR_FLAG_BRIDGED) && 01585 !ast_test_flag(chan->cdr, AST_CDR_FLAG_POST_DISABLED) && 01586 (chan->cdr->disposition != AST_CDR_NULL || ast_test_flag(chan->cdr, AST_CDR_FLAG_DIALED))) { 01587 ast_channel_lock(chan); 01588 01589 ast_cdr_end(chan->cdr); 01590 ast_cdr_detach(chan->cdr); 01591 chan->cdr = NULL; 01592 ast_channel_unlock(chan); 01593 } 01594 01595 ast_channel_free(chan); 01596 01597 return res; 01598 }
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 2551 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().
02552 { 02553 return ast_indicate_data(chan, condition, NULL, 0); 02554 }
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 2589 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().
02591 { 02592 /* By using an enum, we'll get compiler warnings for values not handled 02593 * in switch statements. */ 02594 enum ast_control_frame_type condition = _condition; 02595 const struct tone_zone_sound *ts = NULL; 02596 int res = -1; 02597 02598 ast_channel_lock(chan); 02599 02600 /* Don't bother if the channel is about to go away, anyway. */ 02601 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02602 ast_channel_unlock(chan); 02603 return -1; 02604 } 02605 02606 if (chan->tech->indicate) { 02607 /* See if the channel driver can handle this condition. */ 02608 res = chan->tech->indicate(chan, condition, data, datalen); 02609 } 02610 02611 ast_channel_unlock(chan); 02612 02613 if (chan->tech->indicate && !res) { 02614 /* The channel driver successfully handled this indication */ 02615 if (is_visible_indication(condition)) { 02616 chan->visible_indication = condition; 02617 } 02618 return 0; 02619 } 02620 02621 /* The channel driver does not support this indication, let's fake 02622 * it by doing our own tone generation if applicable. */ 02623 02624 /*!\note If we compare the enumeration type, which does not have any 02625 * negative constants, the compiler may optimize this code away. 02626 * Therefore, we must perform an integer comparison here. */ 02627 if (_condition < 0) { 02628 /* Stop any tones that are playing */ 02629 ast_playtones_stop(chan); 02630 return 0; 02631 } 02632 02633 /* Handle conditions that we have tones for. */ 02634 switch (condition) { 02635 case AST_CONTROL_RINGING: 02636 ts = ast_get_indication_tone(chan->zone, "ring"); 02637 /* It is common practice for channel drivers to return -1 if trying 02638 * to indicate ringing on a channel which is up. The idea is to let the 02639 * core generate the ringing inband. However, we don't want the 02640 * warning message about not being able to handle the specific indication 02641 * to print nor do we want ast_indicate_data to return an "error" for this 02642 * condition 02643 */ 02644 if (chan->_state == AST_STATE_UP) { 02645 res = 0; 02646 } 02647 break; 02648 case AST_CONTROL_BUSY: 02649 ts = ast_get_indication_tone(chan->zone, "busy"); 02650 break; 02651 case AST_CONTROL_CONGESTION: 02652 ts = ast_get_indication_tone(chan->zone, "congestion"); 02653 break; 02654 case AST_CONTROL_PROGRESS: 02655 case AST_CONTROL_PROCEEDING: 02656 case AST_CONTROL_VIDUPDATE: 02657 case AST_CONTROL_SRCUPDATE: 02658 case AST_CONTROL_RADIO_KEY: 02659 case AST_CONTROL_RADIO_UNKEY: 02660 case AST_CONTROL_OPTION: 02661 case AST_CONTROL_WINK: 02662 case AST_CONTROL_FLASH: 02663 case AST_CONTROL_OFFHOOK: 02664 case AST_CONTROL_TAKEOFFHOOK: 02665 case AST_CONTROL_ANSWER: 02666 case AST_CONTROL_HANGUP: 02667 case AST_CONTROL_RING: 02668 case AST_CONTROL_HOLD: 02669 case AST_CONTROL_UNHOLD: 02670 /* Nothing left to do for these. */ 02671 res = 0; 02672 break; 02673 } 02674 02675 if (ts && ts->data[0]) { 02676 /* We have a tone to play, yay. */ 02677 if (option_debug) { 02678 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02679 } 02680 ast_playtones_start(chan, 0, ts->data, 1); 02681 res = 0; 02682 chan->visible_indication = condition; 02683 } 02684 02685 if (res) { 02686 /* not handled */ 02687 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02688 } 02689 02690 return res; 02691 }
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 4881 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04884 { 04885 ast_moh_start_ptr = start_ptr; 04886 ast_moh_stop_ptr = stop_ptr; 04887 ast_moh_cleanup_ptr = cleanup_ptr; 04888 }
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 2533 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().
02534 { 02535 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02536 if (option_debug > 4) 02537 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); 02538 return ret; 02539 }
void ast_moh_cleanup | ( | struct ast_channel * | chan | ) |
Definition at line 4918 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04919 { 04920 if (ast_moh_cleanup_ptr) 04921 ast_moh_cleanup_ptr(chan); 04922 }
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 4898 of file channel.c.
References ast_moh_start_ptr, ast_verbose(), option_verbose, and VERBOSE_PREFIX_3.
Referenced by alsa_indicate(), app_exec(), 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().
04899 { 04900 if (ast_moh_start_ptr) 04901 return ast_moh_start_ptr(chan, mclass, interpclass); 04902 04903 if (option_verbose > 2) { 04904 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04905 mclass ? mclass : (interpclass ? interpclass : "default")); 04906 } 04907 04908 return 0; 04909 }
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 4912 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), ast_quiet_chan(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), 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().
04913 { 04914 if (ast_moh_stop_ptr) 04915 ast_moh_stop_ptr(chan); 04916 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 4930 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().
04931 { 04932 unsigned int i; 04933 int first=1; 04934 char num[3]; 04935 04936 buf[0] = '\0'; 04937 04938 if (!group) /* Return empty string if no group */ 04939 return buf; 04940 04941 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04942 if (group & ((ast_group_t) 1 << i)) { 04943 if (!first) { 04944 strncat(buf, ", ", buflen - strlen(buf) - 1); 04945 } else { 04946 first=0; 04947 } 04948 snprintf(num, sizeof(num), "%u", i); 04949 strncat(buf, num, buflen - strlen(buf) - 1); 04950 } 04951 } 04952 return buf; 04953 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2813 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().
02814 { 02815 struct ast_frame a = { AST_FRAME_VOICE }; 02816 char nothing[128]; 02817 02818 /* Send an empty audio frame to get things moving */ 02819 if (chan->_state != AST_STATE_UP) { 02820 if (option_debug) 02821 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02822 a.subclass = chan->rawwriteformat; 02823 a.data = nothing + AST_FRIENDLY_OFFSET; 02824 a.src = "ast_prod"; 02825 if (ast_write(chan, &a)) 02826 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02827 } 02828 return 0; 02829 }
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 1014 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(), misdn_attempt_transfer(), nbs_call(), phone_call(), pickup_do(), process_sdp(), receive_digit(), send_cause2ast(), setup_rtp_connection(), skinny_call(), skinny_unhold(), ss_thread(), and update_state().
01015 { 01016 struct ast_frame f = { AST_FRAME_CONTROL, }; 01017 01018 f.subclass = control; 01019 01020 return ast_queue_frame(chan, &f); 01021 }
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 1024 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().
01026 { 01027 struct ast_frame f = { AST_FRAME_CONTROL, }; 01028 01029 f.subclass = control; 01030 f.data = (void *) data; 01031 f.datalen = datalen; 01032 01033 return ast_queue_frame(chan, &f); 01034 }
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 991 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().
00992 { 00993 return __ast_queue_frame(chan, fin, 0, NULL); 00994 }
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 996 of file channel.c.
References __ast_queue_frame().
Referenced by __ast_read(), and ast_autoservice_stop().
00997 { 00998 return __ast_queue_frame(chan, fin, 1, NULL); 00999 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 1002 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(), dahdi_r2_on_call_disconnect(), 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().
01003 { 01004 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 01005 /* Yeah, let's not change a lock-critical value without locking */ 01006 if (!ast_channel_trylock(chan)) { 01007 chan->_softhangup |= AST_SOFTHANGUP_DEV; 01008 ast_channel_unlock(chan); 01009 } 01010 return ast_queue_frame(chan, &f); 01011 }
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 2541 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_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().
02542 { 02543 return __ast_read(chan, 0); 02544 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 1981 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().
01982 { 01983 if (chan->generator && chan->generator->generate && chan->generatordata && !ast_internal_timing_enabled(chan)) { 01984 void *tmp = chan->generatordata; 01985 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = chan->generator->generate; 01986 int res; 01987 int samples; 01988 01989 if (chan->timingfunc) { 01990 if (option_debug > 1) 01991 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 01992 ast_settimeout(chan, 0, NULL, NULL); 01993 } 01994 01995 chan->generatordata = NULL; /* reset, to let writes go through */ 01996 01997 if (f->subclass != chan->writeformat) { 01998 float factor; 01999 factor = ((float) ast_format_rate(chan->writeformat)) / ((float) ast_format_rate(f->subclass)); 02000 samples = (int) ( ((float) f->samples) * factor ); 02001 } else { 02002 samples = f->samples; 02003 } 02004 02005 /* This unlock is here based on two assumptions that hold true at this point in the 02006 * code. 1) this function is only called from within __ast_read() and 2) all generators 02007 * call ast_write() in their generate callback. 02008 * 02009 * The reason this is added is so that when ast_write is called, the lock that occurs 02010 * there will not recursively lock the channel. Doing this will cause intended deadlock 02011 * avoidance not to work in deeper functions 02012 */ 02013 ast_channel_unlock(chan); 02014 res = generate(chan, tmp, f->datalen, samples); 02015 ast_channel_lock(chan); 02016 chan->generatordata = tmp; 02017 if (res) { 02018 if (option_debug > 1) 02019 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 02020 ast_deactivate_generator(chan); 02021 } 02022 02023 } else if (f->frametype == AST_FRAME_CNG) { 02024 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 02025 if (option_debug > 1) 02026 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 02027 ast_settimeout(chan, 160, generator_force, chan); 02028 } 02029 } 02030 }
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 2546 of file channel.c.
References __ast_read().
Referenced by conf_run().
02547 { 02548 return __ast_read(chan, 1); 02549 }
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 3509 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().
03510 { 03511 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03512 }
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 3514 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().
03515 { 03516 int pos = 0; /* index in the buffer where we accumulate digits */ 03517 int to = ftimeout; 03518 03519 /* Stop if we're a zombie or need a soft hangup */ 03520 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03521 return -1; 03522 if (!len) 03523 return -1; 03524 for (;;) { 03525 int d; 03526 if (c->stream) { 03527 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03528 ast_stopstream(c); 03529 usleep(1000); 03530 if (!d) 03531 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03532 } else { 03533 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03534 } 03535 if (d < 0) 03536 return -1; 03537 if (d == 0) { 03538 s[pos]='\0'; 03539 return 1; 03540 } 03541 if (d == 1) { 03542 s[pos]='\0'; 03543 return 2; 03544 } 03545 if (!strchr(enders, d)) 03546 s[pos++] = d; 03547 if (strchr(enders, d) || (pos >= len)) { 03548 s[pos]='\0'; 03549 return 0; 03550 } 03551 to = timeout; 03552 } 03553 /* Never reached */ 03554 return 0; 03555 }
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 2693 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02694 { 02695 int c; 02696 char *buf = ast_recvtext(chan, timeout); 02697 if (buf == NULL) 02698 return -1; /* error or timeout */ 02699 c = *(unsigned char *)buf; 02700 free(buf); 02701 return c; 02702 }
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 2704 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().
02705 { 02706 int res, done = 0; 02707 char *buf = NULL; 02708 02709 while (!done) { 02710 struct ast_frame *f; 02711 if (ast_check_hangup(chan)) 02712 break; 02713 res = ast_waitfor(chan, timeout); 02714 if (res <= 0) /* timeout or error */ 02715 break; 02716 timeout = res; /* update timeout */ 02717 f = ast_read(chan); 02718 if (f == NULL) 02719 break; /* no frame */ 02720 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02721 done = 1; /* force a break */ 02722 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02723 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02724 done = 1; 02725 } 02726 ast_frfree(f); 02727 } 02728 return buf; 02729 }
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 3413 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().
03414 { 03415 struct chanlist *chan; 03416 struct ast_channel *c; 03417 int capabilities; 03418 int fmt; 03419 int res; 03420 int foo; 03421 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03422 03423 if (!cause) 03424 cause = &foo; 03425 *cause = AST_CAUSE_NOTDEFINED; 03426 03427 if (AST_LIST_LOCK(&channels)) { 03428 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03429 return NULL; 03430 } 03431 03432 AST_LIST_TRAVERSE(&backends, chan, list) { 03433 if (strcasecmp(type, chan->tech->type)) 03434 continue; 03435 03436 capabilities = chan->tech->capabilities; 03437 fmt = format & AST_FORMAT_AUDIO_MASK; 03438 res = ast_translator_best_choice(&fmt, &capabilities); 03439 if (res < 0) { 03440 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03441 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 03442 AST_LIST_UNLOCK(&channels); 03443 return NULL; 03444 } 03445 AST_LIST_UNLOCK(&channels); 03446 if (!chan->tech->requester) 03447 return NULL; 03448 03449 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03450 return NULL; 03451 03452 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03453 return c; 03454 } 03455 03456 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03457 *cause = AST_CAUSE_NOSUCHDRIVER; 03458 AST_LIST_UNLOCK(&channels); 03459 03460 return NULL; 03461 }
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 3408 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
03409 { 03410 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 03411 }
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 1224 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().
01225 { 01226 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01227 }
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 1203 of file channel.c.
References ast_frfree, ast_read(), ast_waitfor(), and f.
Referenced by __login_exec(), and ast_safe_sleep().
01204 { 01205 struct ast_frame *f; 01206 01207 while (ms > 0) { 01208 if (cond && ((*cond)(data) == 0)) 01209 return 0; 01210 ms = ast_waitfor(chan, ms); 01211 if (ms < 0) 01212 return -1; 01213 if (ms > 0) { 01214 f = ast_read(chan); 01215 if (!f) 01216 return -1; 01217 ast_frfree(f); 01218 } 01219 } 01220 return 0; 01221 }
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 5212 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().
05214 { 05215 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 05216 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5206 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().
05208 { 05209 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 05210 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5200 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
05202 { 05203 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 05204 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 5224 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().
05226 { 05227 char buf[256]; 05228 05229 snprintf(buf, sizeof(buf), "%d", num); 05230 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 05231 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5194 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().
05196 { 05197 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 05198 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5188 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().
05190 { 05191 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 05192 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5218 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
05220 { 05221 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 05222 }
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 2803 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().
02804 { 02805 if (chan->tech->send_digit_begin) { 02806 ast_senddigit_begin(chan, digit); 02807 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02808 } 02809 02810 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02811 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Definition at line 2744 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().
02745 { 02746 /* Device does not support DTMF tones, lets fake 02747 * it by doing our own generation. */ 02748 static const char* dtmf_tones[] = { 02749 "941+1336", /* 0 */ 02750 "697+1209", /* 1 */ 02751 "697+1336", /* 2 */ 02752 "697+1477", /* 3 */ 02753 "770+1209", /* 4 */ 02754 "770+1336", /* 5 */ 02755 "770+1477", /* 6 */ 02756 "852+1209", /* 7 */ 02757 "852+1336", /* 8 */ 02758 "852+1477", /* 9 */ 02759 "697+1633", /* A */ 02760 "770+1633", /* B */ 02761 "852+1633", /* C */ 02762 "941+1633", /* D */ 02763 "941+1209", /* * */ 02764 "941+1477" /* # */ 02765 }; 02766 02767 if (!chan->tech->send_digit_begin) 02768 return 0; 02769 02770 if (!chan->tech->send_digit_begin(chan, digit)) 02771 return 0; 02772 02773 if (digit >= '0' && digit <='9') 02774 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02775 else if (digit >= 'A' && digit <= 'D') 02776 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02777 else if (digit == '*') 02778 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02779 else if (digit == '#') 02780 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02781 else { 02782 /* not handled */ 02783 if (option_debug) 02784 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02785 } 02786 02787 return 0; 02788 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Definition at line 2790 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().
02791 { 02792 int res = -1; 02793 02794 if (chan->tech->send_digit_end) 02795 res = chan->tech->send_digit_end(chan, digit, duration); 02796 02797 if (res && chan->generator) 02798 ast_playtones_stop(chan); 02799 02800 return 0; 02801 }
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 2731 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().
02732 { 02733 int res = 0; 02734 /* Stop if we're a zombie or need a soft hangup */ 02735 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02736 return -1; 02737 CHECK_BLOCKING(chan); 02738 if (chan->tech->send_text) 02739 res = chan->tech->send_text(chan, text); 02740 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02741 return res; 02742 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 4099 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().
04100 { 04101 ast_channel_lock(chan); 04102 04103 if (callerid) { 04104 if (chan->cid.cid_num) 04105 free(chan->cid.cid_num); 04106 chan->cid.cid_num = ast_strdup(callerid); 04107 } 04108 if (calleridname) { 04109 if (chan->cid.cid_name) 04110 free(chan->cid.cid_name); 04111 chan->cid.cid_name = ast_strdup(calleridname); 04112 } 04113 if (ani) { 04114 if (chan->cid.cid_ani) 04115 free(chan->cid.cid_ani); 04116 chan->cid.cid_ani = ast_strdup(ani); 04117 } 04118 04119 report_new_callerid(chan); 04120 04121 ast_channel_unlock(chan); 04122 }
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 3154 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().
03155 { 03156 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 03157 &chan->readtrans, 0); 03158 }
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 4955 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().
04956 { 04957 struct ast_variable *cur; 04958 04959 for (cur = vars; cur; cur = cur->next) 04960 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04961 }
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 3160 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().
03161 { 03162 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 03163 &chan->writetrans, 1); 03164 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 4124 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(), release_chan_early(), sip_answer(), skinny_answer(), skinny_call(), skinny_newcall(), ss_thread(), and update_state().
04125 { 04126 char name[AST_CHANNEL_NAME], *dashptr; 04127 int oldstate = chan->_state; 04128 04129 if (oldstate == state) 04130 return 0; 04131 04132 ast_copy_string(name, chan->name, sizeof(name)); 04133 if ((dashptr = strrchr(name, '-'))) { 04134 *dashptr = '\0'; 04135 } 04136 04137 chan->_state = state; 04138 ast_device_state_changed_literal(name); 04139 /* setstate used to conditionally report Newchannel; this is no more */ 04140 manager_event(EVENT_FLAG_CALL, 04141 "Newstate", 04142 "Channel: %s\r\n" 04143 "State: %s\r\n" 04144 "CallerID: %s\r\n" 04145 "CallerIDName: %s\r\n" 04146 "Uniqueid: %s\r\n", 04147 chan->name, ast_state2str(chan->_state), 04148 S_OR(chan->cid.cid_num, "<unknown>"), 04149 S_OR(chan->cid.cid_name, "<unknown>"), 04150 chan->uniqueid); 04151 04152 return 0; 04153 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 1884 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_closestream(), ast_deactivate_generator(), ast_read_generator_actions(), ast_readaudio_callback(), and filestream_destructor().
01885 { 01886 int res = -1; 01887 #ifdef HAVE_DAHDI 01888 ast_channel_lock(c); 01889 if (c->timingfd > -1) { 01890 if (!func) { 01891 samples = 0; 01892 data = 0; 01893 } 01894 if (option_debug) 01895 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 01896 res = ioctl(c->timingfd, DAHDI_TIMERCONFIG, &samples); 01897 c->timingfunc = func; 01898 c->timingdata = data; 01899 } 01900 ast_channel_unlock(c); 01901 #endif 01902 return res; 01903 }
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. | |
reason | an AST_SOFTHANGUP_* reason code |
Definition at line 1472 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().
01473 { 01474 int res; 01475 ast_channel_lock(chan); 01476 res = ast_softhangup_nolock(chan, cause); 01477 ast_channel_unlock(chan); 01478 return res; 01479 }
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 | |
reason | an AST_SOFTHANGUP_* reason code |
Definition at line 1458 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().
01459 { 01460 if (option_debug) 01461 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01462 /* Inform channel driver that we need to be hung up, if it cares */ 01463 chan->_softhangup |= cause; 01464 ast_queue_frame(chan, &ast_null_frame); 01465 /* Interrupt any poll call or such */ 01466 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01467 pthread_kill(chan->blocker, SIGURG); 01468 return 0; 01469 }
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 4827 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04828 { 04829 int res; 04830 04831 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04832 return res; 04833 04834 /* Give us some wiggle room */ 04835 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04836 struct ast_frame *f = ast_read(chan); 04837 if (f) 04838 ast_frfree(f); 04839 else 04840 return -1; 04841 } 04842 return 0; 04843 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4809 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().
04810 { 04811 struct tonepair_def d = { 0, }; 04812 04813 d.freq1 = freq1; 04814 d.freq2 = freq2; 04815 d.duration = duration; 04816 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04817 if (ast_activate_generator(chan, &tonepair, &d)) 04818 return -1; 04819 return 0; 04820 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4822 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04823 { 04824 ast_deactivate_generator(chan); 04825 }
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 3491 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().
03492 { 03493 int res = -1; 03494 03495 /* Stop if we're a zombie or need a soft hangup */ 03496 ast_channel_lock(chan); 03497 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03498 if (chan->tech->transfer) { 03499 res = chan->tech->transfer(chan, dest); 03500 if (!res) 03501 res = 1; 03502 } else 03503 res = 0; 03504 } 03505 ast_channel_unlock(chan); 03506 return res; 03507 }
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 4890 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by unload_module().
04891 { 04892 ast_moh_start_ptr = NULL; 04893 ast_moh_stop_ptr = NULL; 04894 ast_moh_cleanup_ptr = NULL; 04895 }
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 1868 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_atxfer(), 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().
01869 { 01870 int oldms = ms; /* -1 if no timeout */ 01871 01872 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 01873 if ((ms < 0) && (oldms < 0)) 01874 ms = 0; 01875 return ms; 01876 }
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 1863 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().
01864 { 01865 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 01866 }
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 1707 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01708 { 01709 int winner = -1; 01710 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01711 return winner; 01712 }
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 1715 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().
01717 { 01718 struct timeval start = { 0 , 0 }; 01719 struct pollfd *pfds = NULL; 01720 int res; 01721 long rms; 01722 int x, y, max; 01723 int sz; 01724 time_t now = 0; 01725 long whentohangup = 0, diff; 01726 struct ast_channel *winner = NULL; 01727 struct fdmap { 01728 int chan; 01729 int fdno; 01730 } *fdmap = NULL; 01731 01732 if ((sz = n * AST_MAX_FDS + nfds)) { 01733 pfds = alloca(sizeof(*pfds) * sz); 01734 fdmap = alloca(sizeof(*fdmap) * sz); 01735 } 01736 01737 if (outfd) 01738 *outfd = -99999; 01739 if (exception) 01740 *exception = 0; 01741 01742 /* Perform any pending masquerades */ 01743 for (x=0; x < n; x++) { 01744 ast_channel_lock(c[x]); 01745 if (c[x]->masq) { 01746 if (ast_do_masquerade(c[x])) { 01747 ast_log(LOG_WARNING, "Masquerade failed\n"); 01748 *ms = -1; 01749 ast_channel_unlock(c[x]); 01750 return NULL; 01751 } 01752 } 01753 if (c[x]->whentohangup) { 01754 if (!whentohangup) 01755 time(&now); 01756 diff = c[x]->whentohangup - now; 01757 if (diff < 1) { 01758 /* Should already be hungup */ 01759 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01760 ast_channel_unlock(c[x]); 01761 return c[x]; 01762 } 01763 if (!whentohangup || (diff < whentohangup)) 01764 whentohangup = diff; 01765 } 01766 ast_channel_unlock(c[x]); 01767 } 01768 /* Wait full interval */ 01769 rms = *ms; 01770 if (whentohangup) { 01771 rms = whentohangup * 1000; /* timeout in milliseconds */ 01772 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01773 rms = *ms; 01774 } 01775 /* 01776 * Build the pollfd array, putting the channels' fds first, 01777 * followed by individual fds. Order is important because 01778 * individual fd's must have priority over channel fds. 01779 */ 01780 max = 0; 01781 for (x=0; x<n; x++) { 01782 for (y=0; y<AST_MAX_FDS; y++) { 01783 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01784 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01785 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01786 } 01787 CHECK_BLOCKING(c[x]); 01788 } 01789 /* Add the individual fds */ 01790 for (x=0; x<nfds; x++) { 01791 fdmap[max].chan = -1; 01792 max += ast_add_fd(&pfds[max], fds[x]); 01793 } 01794 01795 if (*ms > 0) 01796 start = ast_tvnow(); 01797 01798 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01799 do { 01800 int kbrms = rms; 01801 if (kbrms > 600000) 01802 kbrms = 600000; 01803 res = ast_poll(pfds, max, kbrms); 01804 if (!res) 01805 rms -= kbrms; 01806 } while (!res && (rms > 0)); 01807 } else { 01808 res = ast_poll(pfds, max, rms); 01809 } 01810 for (x=0; x<n; x++) 01811 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01812 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01813 if (errno != EINTR) 01814 *ms = -1; 01815 return NULL; 01816 } 01817 if (whentohangup) { /* if we have a timeout, check who expired */ 01818 time(&now); 01819 for (x=0; x<n; x++) { 01820 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01821 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01822 if (winner == NULL) 01823 winner = c[x]; 01824 } 01825 } 01826 } 01827 if (res == 0) { /* no fd ready, reset timeout and done */ 01828 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01829 return winner; 01830 } 01831 /* 01832 * Then check if any channel or fd has a pending event. 01833 * Remember to check channels first and fds last, as they 01834 * must have priority on setting 'winner' 01835 */ 01836 for (x = 0; x < max; x++) { 01837 res = pfds[x].revents; 01838 if (res == 0) 01839 continue; 01840 if (fdmap[x].chan >= 0) { /* this is a channel */ 01841 winner = c[fdmap[x].chan]; /* override previous winners */ 01842 if (res & POLLPRI) 01843 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01844 else 01845 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01846 winner->fdno = fdmap[x].fdno; 01847 } else { /* this is an fd */ 01848 if (outfd) 01849 *outfd = pfds[x].fd; 01850 if (exception) 01851 *exception = (res & POLLPRI) ? -1 : 0; 01852 winner = NULL; 01853 } 01854 } 01855 if (*ms > 0) { 01856 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01857 if (*ms < 0) 01858 *ms = 0; 01859 } 01860 return winner; 01861 }
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 1879 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().
01880 { 01881 return ast_waitfordigit_full(c, ms, -1, -1); 01882 }
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 1905 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().
01906 { 01907 /* Stop if we're a zombie or need a soft hangup */ 01908 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 01909 return -1; 01910 01911 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 01912 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 01913 01914 /* Wait for a digit, no more than ms milliseconds total. */ 01915 while (ms) { 01916 struct ast_channel *rchan; 01917 int outfd; 01918 01919 errno = 0; 01920 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 01921 if (!rchan && outfd < 0 && ms) { 01922 if (errno == 0 || errno == EINTR) 01923 continue; 01924 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 01925 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01926 return -1; 01927 } else if (outfd > -1) { 01928 /* The FD we were watching has something waiting */ 01929 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01930 return 1; 01931 } else if (rchan) { 01932 int res; 01933 struct ast_frame *f = ast_read(c); 01934 if (!f) 01935 return -1; 01936 01937 switch(f->frametype) { 01938 case AST_FRAME_DTMF_BEGIN: 01939 break; 01940 case AST_FRAME_DTMF_END: 01941 res = f->subclass; 01942 ast_frfree(f); 01943 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01944 return res; 01945 case AST_FRAME_CONTROL: 01946 switch(f->subclass) { 01947 case AST_CONTROL_HANGUP: 01948 ast_frfree(f); 01949 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01950 return -1; 01951 case AST_CONTROL_RINGING: 01952 case AST_CONTROL_ANSWER: 01953 case AST_CONTROL_SRCUPDATE: 01954 /* Unimportant */ 01955 break; 01956 default: 01957 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 01958 break; 01959 } 01960 break; 01961 case AST_FRAME_VOICE: 01962 /* Write audio if appropriate */ 01963 if (audiofd > -1) { 01964 if (write(audiofd, f->data, f->datalen) < 0) { 01965 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 01966 } 01967 } 01968 default: 01969 /* Ignore */ 01970 break; 01971 } 01972 ast_frfree(f); 01973 } 01974 } 01975 01976 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01977 01978 return 0; /* Time is up */ 01979 }
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 1196 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01198 { 01199 return channel_find_locked(chan, NULL, 0, context, exten); 01200 }
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 1183 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01185 { 01186 return channel_find_locked(chan, name, namelen, NULL, NULL); 01187 }
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 2842 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_frisolate(), 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_feature_request_and_dial(), 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().
02843 { 02844 int res = -1; 02845 int count = 0; 02846 struct ast_frame *f = NULL; 02847 02848 /*Deadlock avoidance*/ 02849 while(ast_channel_trylock(chan)) { 02850 /*cannot goto done since the channel is not locked*/ 02851 if(count++ > 10) { 02852 if(option_debug) 02853 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 02854 return 0; 02855 } 02856 usleep(1); 02857 } 02858 /* Stop if we're a zombie or need a soft hangup */ 02859 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02860 goto done; 02861 02862 /* Handle any pending masquerades */ 02863 if (chan->masq && ast_do_masquerade(chan)) { 02864 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02865 goto done; 02866 } 02867 if (chan->masqr) { 02868 res = 0; /* XXX explain, why 0 ? */ 02869 goto done; 02870 } 02871 if (chan->generatordata) { 02872 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02873 ast_deactivate_generator(chan); 02874 else { 02875 if (fr->frametype == AST_FRAME_DTMF_END) { 02876 /* There is a generator running while we're in the middle of a digit. 02877 * It's probably inband DTMF, so go ahead and pass it so it can 02878 * stop the generator */ 02879 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02880 ast_channel_unlock(chan); 02881 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02882 ast_channel_lock(chan); 02883 CHECK_BLOCKING(chan); 02884 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 02885 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 02886 res = (chan->tech->indicate == NULL) ? 0 : 02887 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02888 } 02889 res = 0; /* XXX explain, why 0 ? */ 02890 goto done; 02891 } 02892 } 02893 /* High bit prints debugging */ 02894 if (chan->fout & DEBUGCHAN_FLAG) 02895 ast_frame_dump(chan->name, fr, ">>"); 02896 CHECK_BLOCKING(chan); 02897 switch(fr->frametype) { 02898 case AST_FRAME_CONTROL: 02899 res = (chan->tech->indicate == NULL) ? 0 : 02900 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02901 break; 02902 case AST_FRAME_DTMF_BEGIN: 02903 if (chan->audiohooks) { 02904 struct ast_frame *old_frame = fr; 02905 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02906 if (old_frame != fr) 02907 f = fr; 02908 } 02909 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02910 ast_channel_unlock(chan); 02911 res = ast_senddigit_begin(chan, fr->subclass); 02912 ast_channel_lock(chan); 02913 CHECK_BLOCKING(chan); 02914 break; 02915 case AST_FRAME_DTMF_END: 02916 if (chan->audiohooks) { 02917 struct ast_frame *new_frame = fr; 02918 02919 new_frame = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02920 if (new_frame != fr) { 02921 ast_frfree(new_frame); 02922 } 02923 } 02924 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02925 ast_channel_unlock(chan); 02926 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02927 ast_channel_lock(chan); 02928 CHECK_BLOCKING(chan); 02929 break; 02930 case AST_FRAME_TEXT: 02931 res = (chan->tech->send_text == NULL) ? 0 : 02932 chan->tech->send_text(chan, (char *) fr->data); 02933 break; 02934 case AST_FRAME_HTML: 02935 res = (chan->tech->send_html == NULL) ? 0 : 02936 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02937 break; 02938 case AST_FRAME_VIDEO: 02939 /* XXX Handle translation of video codecs one day XXX */ 02940 res = (chan->tech->write_video == NULL) ? 0 : 02941 chan->tech->write_video(chan, fr); 02942 break; 02943 case AST_FRAME_MODEM: 02944 res = (chan->tech->write == NULL) ? 0 : 02945 chan->tech->write(chan, fr); 02946 break; 02947 case AST_FRAME_VOICE: 02948 if (chan->tech->write == NULL) 02949 break; /*! \todo XXX should return 0 maybe ? */ 02950 02951 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02952 if (fr->subclass == chan->rawwriteformat) 02953 f = fr; 02954 else 02955 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02956 02957 /* If we have no frame of audio, then we have to bail out */ 02958 if (!f) { 02959 res = 0; 02960 break; 02961 } 02962 02963 if (chan->audiohooks) { 02964 struct ast_frame *prev = NULL, *new_frame, *cur, *dup; 02965 int freeoldlist = 0; 02966 02967 if (f != fr) { 02968 freeoldlist = 1; 02969 } 02970 02971 /* Since ast_audiohook_write may return a new frame, and the cur frame is 02972 * an item in a list of frames, create a new list adding each cur frame back to it 02973 * regardless if the cur frame changes or not. */ 02974 for (cur = f; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 02975 new_frame = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, cur); 02976 02977 /* if this frame is different than cur, preserve the end of the list, 02978 * free the old frames, and set cur to be the new frame */ 02979 if (new_frame != cur) { 02980 02981 /* doing an ast_frisolate here seems silly, but we are not guaranteed the new_frame 02982 * isn't part of local storage, meaning if ast_audiohook_write is called multiple 02983 * times it may override the previous frame we got from it unless we dup it */ 02984 if ((dup = ast_frisolate(new_frame))) { 02985 AST_LIST_NEXT(dup, frame_list) = AST_LIST_NEXT(cur, frame_list); 02986 if (freeoldlist) { 02987 AST_LIST_NEXT(cur, frame_list) = NULL; 02988 ast_frfree(cur); 02989 } 02990 cur = dup; 02991 } 02992 } 02993 02994 /* now, regardless if cur is new or not, add it to the new list, 02995 * if the new list has not started, cur will become the first item. */ 02996 if (prev) { 02997 AST_LIST_NEXT(prev, frame_list) = cur; 02998 } else { 02999 f = cur; /* set f to be the beginning of our new list */ 03000 } 03001 prev = cur; 03002 } 03003 } 03004 03005 /* If Monitor is running on this channel, then we have to write frames out there too */ 03006 /* the translator on chan->writetrans may have returned multiple frames 03007 from the single frame we passed in; if so, feed each one of them to the 03008 monitor */ 03009 if (chan->monitor && chan->monitor->write_stream) { 03010 struct ast_frame *cur; 03011 03012 for (cur = f; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 03013 /* XXX must explain this code */ 03014 #ifndef MONITOR_CONSTANT_DELAY 03015 int jump = chan->insmpl - chan->outsmpl - 4 * cur->samples; 03016 if (jump >= 0) { 03017 jump = chan->insmpl - chan->outsmpl; 03018 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 03019 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 03020 chan->outsmpl += jump + cur->samples; 03021 } else { 03022 chan->outsmpl += cur->samples; 03023 } 03024 #else 03025 int jump = chan->insmpl - chan->outsmpl; 03026 if (jump - MONITOR_DELAY >= 0) { 03027 if (ast_seekstream(chan->monitor->write_stream, jump - cur->samples, SEEK_FORCECUR) == -1) 03028 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 03029 chan->outsmpl += jump; 03030 } else { 03031 chan->outsmpl += cur->samples; 03032 } 03033 #endif 03034 if (chan->monitor->state == AST_MONITOR_RUNNING) { 03035 if (ast_writestream(chan->monitor->write_stream, cur) < 0) 03036 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 03037 } 03038 } 03039 } 03040 03041 /* the translator on chan->writetrans may have returned multiple frames 03042 from the single frame we passed in; if so, feed each one of them to the 03043 channel, freeing each one after it has been written */ 03044 if ((f != fr) && AST_LIST_NEXT(f, frame_list)) { 03045 struct ast_frame *cur, *next; 03046 unsigned int skip = 0; 03047 03048 for (cur = f, next = AST_LIST_NEXT(cur, frame_list); 03049 cur; 03050 cur = next, next = cur ? AST_LIST_NEXT(cur, frame_list) : NULL) { 03051 if (!skip) { 03052 if ((res = chan->tech->write(chan, cur)) < 0) { 03053 chan->_softhangup |= AST_SOFTHANGUP_DEV; 03054 skip = 1; 03055 } else if (next) { 03056 /* don't do this for the last frame in the list, 03057 as the code outside the loop will do it once 03058 */ 03059 chan->fout = FRAMECOUNT_INC(chan->fout); 03060 } 03061 } 03062 ast_frfree(cur); 03063 } 03064 03065 /* reset f so the code below doesn't attempt to free it */ 03066 f = NULL; 03067 } else { 03068 res = chan->tech->write(chan, f); 03069 } 03070 break; 03071 case AST_FRAME_NULL: 03072 case AST_FRAME_IAX: 03073 /* Ignore these */ 03074 res = 0; 03075 break; 03076 default: 03077 /* At this point, fr is the incoming frame and f is NULL. Channels do 03078 * not expect to get NULL as a frame pointer and will segfault. Hence, 03079 * we output the original frame passed in. */ 03080 res = chan->tech->write(chan, fr); 03081 break; 03082 } 03083 03084 if (f && f != fr) 03085 ast_frfree(f); 03086 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03087 03088 /* Consider a write failure to force a soft hangup */ 03089 if (res < 0) { 03090 chan->_softhangup |= AST_SOFTHANGUP_DEV; 03091 } else { 03092 chan->fout = FRAMECOUNT_INC(chan->fout); 03093 } 03094 done: 03095 ast_channel_unlock(chan); 03096 return res; 03097 }
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 2831 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02832 { 02833 int res; 02834 if (!chan->tech->write_video) 02835 return 0; 02836 res = ast_write(chan, fr); 02837 if (!res) 02838 res = 1; 02839 return res; 02840 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 4165 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().
04166 { 04167 int min = 0, sec = 0, check; 04168 04169 check = ast_autoservice_start(peer); 04170 if (check) 04171 return; 04172 04173 if (remain > 0) { 04174 if (remain / 60 > 1) { 04175 min = remain / 60; 04176 sec = remain % 60; 04177 } else { 04178 sec = remain; 04179 } 04180 } 04181 04182 if (!strcmp(sound,"timeleft")) { /* Queue support */ 04183 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 04184 if (min) { 04185 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 04186 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 04187 } 04188 if (sec) { 04189 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 04190 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 04191 } 04192 } else { 04193 ast_stream_and_wait(chan, sound, chan->language, ""); 04194 } 04195 04196 ast_autoservice_stop(peer); 04197 }
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 1079 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().
01082 { 01083 const char *msg = prev ? "deadlock" : "initial deadlock"; 01084 int retries; 01085 struct ast_channel *c; 01086 const struct ast_channel *_prev = prev; 01087 01088 for (retries = 0; retries < 200; retries++) { 01089 int done; 01090 /* Reset prev on each retry. See note below for the reason. */ 01091 prev = _prev; 01092 AST_LIST_LOCK(&channels); 01093 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01094 if (prev) { /* look for last item, first, before any evaluation */ 01095 if (c != prev) /* not this one */ 01096 continue; 01097 /* found, prepare to return c->next */ 01098 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01099 /*!\note 01100 * We're done searching through the list for the previous item. 01101 * Any item after this point, we want to evaluate for a match. 01102 * If we didn't set prev to NULL here, then we would only 01103 * return matches for the first matching item (since the above 01104 * "if (c != prev)" would not permit any other potential 01105 * matches to reach the additional matching logic, below). 01106 * Instead, it would just iterate until it once again found the 01107 * original match, then iterate down to the end of the list and 01108 * quit. 01109 */ 01110 prev = NULL; 01111 } 01112 if (name) { /* want match by name */ 01113 if ((!namelen && strcasecmp(c->name, name)) || 01114 (namelen && strncasecmp(c->name, name, namelen))) 01115 continue; /* name match failed */ 01116 } else if (exten) { 01117 if (context && strcasecmp(c->context, context) && 01118 strcasecmp(c->macrocontext, context)) 01119 continue; /* context match failed */ 01120 if (strcasecmp(c->exten, exten) && 01121 strcasecmp(c->macroexten, exten)) 01122 continue; /* exten match failed */ 01123 } 01124 /* if we get here, c points to the desired record */ 01125 break; 01126 } 01127 /* exit if chan not found or mutex acquired successfully */ 01128 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01129 done = c == NULL || ast_channel_trylock(c) == 0; 01130 if (!done) { 01131 if (option_debug) 01132 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01133 if (retries == 199) { 01134 /* We are about to fail due to a deadlock, so report this 01135 * while we still have the list lock. 01136 */ 01137 if (option_debug) 01138 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01139 /* As we have deadlocked, we will skip this channel and 01140 * see if there is another match. 01141 * NOTE: No point doing this for a full-name match, 01142 * as there can be no more matches. 01143 */ 01144 if (!(name && !namelen)) { 01145 prev = c; 01146 retries = -1; 01147 } 01148 } 01149 } 01150 AST_LIST_UNLOCK(&channels); 01151 if (done) 01152 return c; 01153 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01154 * starting from the beginning of the list we can restore our saved pointer to the previous 01155 * channel and start from there. 01156 */ 01157 prev = _prev; 01158 usleep(1); /* give other threads a chance before retrying */ 01159 } 01160 01161 return NULL; 01162 }
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 5042 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
05043 { 05044 switch (reason) { 05045 case CHANNEL_MODULE_LOAD: 05046 return "LOAD (Channel module load)"; 05047 05048 case CHANNEL_MODULE_RELOAD: 05049 return "RELOAD (Channel module reload)"; 05050 05051 case CHANNEL_CLI_RELOAD: 05052 return "CLIRELOAD (Channel module reload by CLI command)"; 05053 05054 default: 05055 return "MANAGERRELOAD (Channel module reload by manager)"; 05056 } 05057 };
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 3773 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().
03774 { 03775 struct ast_var_t *current, *newvar; 03776 /* Append variables from clone channel into original channel */ 03777 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03778 if (AST_LIST_FIRST(&clone->varshead)) 03779 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03780 03781 /* then, dup the varshead list into the clone */ 03782 03783 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 03784 newvar = ast_var_assign(current->name, current->value); 03785 if (newvar) 03786 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 03787 } 03788 }
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 1229 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().
01230 { 01231 if (cid->cid_dnid) 01232 free(cid->cid_dnid); 01233 if (cid->cid_num) 01234 free(cid->cid_num); 01235 if (cid->cid_name) 01236 free(cid->cid_name); 01237 if (cid->cid_ani) 01238 free(cid->cid_ani); 01239 if (cid->cid_rdnis) 01240 free(cid->cid_rdnis); 01241 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1481 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().
01482 { 01483 if (clone->writetrans) 01484 ast_translator_free_path(clone->writetrans); 01485 if (clone->readtrans) 01486 ast_translator_free_path(clone->readtrans); 01487 clone->writetrans = NULL; 01488 clone->readtrans = NULL; 01489 clone->rawwriteformat = clone->nativeformats; 01490 clone->rawreadformat = clone->nativeformats; 01491 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1648 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().
01649 { 01650 /* Called if generator doesn't have data */ 01651 void *tmp; 01652 int res; 01653 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01654 struct ast_channel *chan = (struct ast_channel *)data; 01655 01656 ast_channel_lock(chan); 01657 tmp = chan->generatordata; 01658 chan->generatordata = NULL; 01659 if (chan->generator) 01660 generate = chan->generator->generate; 01661 ast_channel_unlock(chan); 01662 01663 if (!tmp || !generate) 01664 return 0; 01665 01666 res = generate(chan, tmp, 0, ast_format_rate(chan->writeformat & AST_FORMAT_AUDIO_MASK) / 50); 01667 01668 chan->generatordata = tmp; 01669 01670 if (res) { 01671 if (option_debug) 01672 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01673 ast_deactivate_generator(chan); 01674 } 01675 01676 return 0; 01677 }
static void handle_cause | ( | int | cause, | |
int * | outstate | |||
) | [static] |
Definition at line 3189 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().
03190 { 03191 if (outstate) { 03192 /* compute error and return */ 03193 if (cause == AST_CAUSE_BUSY) 03194 *outstate = AST_CONTROL_BUSY; 03195 else if (cause == AST_CAUSE_CONGESTION) 03196 *outstate = AST_CONTROL_CONGESTION; 03197 else 03198 *outstate = 0; 03199 } 03200 }
static int attribute_const is_visible_indication | ( | enum ast_control_frame_type | condition | ) | [static] |
Definition at line 2556 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().
02557 { 02558 /* Don't include a default case here so that we get compiler warnings 02559 * when a new type is added. */ 02560 02561 switch (condition) { 02562 case AST_CONTROL_PROGRESS: 02563 case AST_CONTROL_PROCEEDING: 02564 case AST_CONTROL_VIDUPDATE: 02565 case AST_CONTROL_SRCUPDATE: 02566 case AST_CONTROL_RADIO_KEY: 02567 case AST_CONTROL_RADIO_UNKEY: 02568 case AST_CONTROL_OPTION: 02569 case AST_CONTROL_WINK: 02570 case AST_CONTROL_FLASH: 02571 case AST_CONTROL_OFFHOOK: 02572 case AST_CONTROL_TAKEOFFHOOK: 02573 case AST_CONTROL_ANSWER: 02574 case AST_CONTROL_HANGUP: 02575 return 0; 02576 02577 case AST_CONTROL_CONGESTION: 02578 case AST_CONTROL_BUSY: 02579 case AST_CONTROL_RINGING: 02580 case AST_CONTROL_RING: 02581 case AST_CONTROL_HOLD: 02582 case AST_CONTROL_UNHOLD: 02583 return 1; 02584 } 02585 02586 return 0; 02587 }
static void queue_dtmf_readq | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [inline, static] |
Definition at line 2032 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().
02033 { 02034 struct ast_frame *fr = &chan->dtmff; 02035 02036 fr->frametype = AST_FRAME_DTMF_END; 02037 fr->subclass = f->subclass; 02038 fr->len = f->len; 02039 02040 /* The only time this function will be called is for a frame that just came 02041 * out of the channel driver. So, we want to stick it on the tail of the 02042 * readq. */ 02043 02044 ast_queue_frame(chan, fr); 02045 }
static void report_new_callerid | ( | const struct ast_channel * | chan | ) | [static] |
Definition at line 3793 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().
03794 { 03795 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03796 "Channel: %s\r\n" 03797 "CallerID: %s\r\n" 03798 "CallerIDName: %s\r\n" 03799 "Uniqueid: %s\r\n" 03800 "CID-CallingPres: %d (%s)\r\n", 03801 chan->name, 03802 S_OR(chan->cid.cid_num, "<Unknown>"), 03803 S_OR(chan->cid.cid_name, "<Unknown>"), 03804 chan->uniqueid, 03805 chan->cid.cid_pres, 03806 ast_describe_caller_presentation(chan->cid.cid_pres) 03807 ); 03808 }
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 3099 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().
03101 { 03102 int native; 03103 int res; 03104 char from[200], to[200]; 03105 03106 /* Make sure we only consider audio */ 03107 fmt &= AST_FORMAT_AUDIO_MASK; 03108 03109 native = chan->nativeformats; 03110 /* Find a translation path from the native format to one of the desired formats */ 03111 if (!direction) 03112 /* reading */ 03113 res = ast_translator_best_choice(&fmt, &native); 03114 else 03115 /* writing */ 03116 res = ast_translator_best_choice(&native, &fmt); 03117 03118 if (res < 0) { 03119 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 03120 ast_getformatname_multiple(from, sizeof(from), native), 03121 ast_getformatname_multiple(to, sizeof(to), fmt)); 03122 return -1; 03123 } 03124 03125 /* Now we have a good choice for both. */ 03126 ast_channel_lock(chan); 03127 03128 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 03129 /* the channel is already in these formats, so nothing to do */ 03130 ast_channel_unlock(chan); 03131 return 0; 03132 } 03133 03134 *rawformat = native; 03135 /* User perspective is fmt */ 03136 *format = fmt; 03137 /* Free any read translation we have right now */ 03138 if (*trans) 03139 ast_translator_free_path(*trans); 03140 /* Build a translation path from the raw format to the desired format */ 03141 if (!direction) 03142 /* reading */ 03143 *trans = ast_translator_build_path(*format, *rawformat); 03144 else 03145 /* writing */ 03146 *trans = ast_translator_build_path(*rawformat, *format); 03147 ast_channel_unlock(chan); 03148 if (option_debug) 03149 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 03150 direction ? "write" : "read", ast_getformatname(fmt)); 03151 return 0; 03152 }
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 2050 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().
02051 { 02052 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF)) { 02053 /* We're in the middle of emulating a digit, or DTMF has been 02054 * explicitly deferred. Skip this digit, then. */ 02055 return 1; 02056 } 02057 02058 if (!ast_tvzero(chan->dtmf_tv) && 02059 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02060 /* We're not in the middle of a digit, but it hasn't been long enough 02061 * since the last digit, so we'll have to skip DTMF for now. */ 02062 return 1; 02063 } 02064 02065 return 0; 02066 }
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 4974 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04975 { 04976 short buf[samples]; 04977 struct ast_frame frame = { 04978 .frametype = AST_FRAME_VOICE, 04979 .subclass = AST_FORMAT_SLINEAR, 04980 .data = buf, 04981 .samples = samples, 04982 .datalen = sizeof(buf), 04983 }; 04984 memset(buf, 0, sizeof(buf)); 04985 if (ast_write(chan, &frame)) 04986 return -1; 04987 return 0; 04988 }
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 4727 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.
04728 { 04729 struct tonepair_state *ts; 04730 struct tonepair_def *td = params; 04731 04732 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04733 return NULL; 04734 ts->origwfmt = chan->writeformat; 04735 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04736 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04737 tonepair_release(NULL, ts); 04738 ts = NULL; 04739 } else { 04740 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04741 ts->v1_1 = 0; 04742 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04743 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04744 ts->v2_1 = 0; 04745 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04746 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04747 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04748 ts->duration = td->duration; 04749 ts->modulate = 0; 04750 } 04751 /* Let interrupts interrupt :) */ 04752 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04753 return ts; 04754 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4756 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.
04757 { 04758 struct tonepair_state *ts = data; 04759 int x; 04760 04761 /* we need to prepare a frame with 16 * timelen samples as we're 04762 * generating SLIN audio 04763 */ 04764 len = samples * 2; 04765 04766 if (len > sizeof(ts->data) / 2 - 1) { 04767 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04768 return -1; 04769 } 04770 memset(&ts->f, 0, sizeof(ts->f)); 04771 for (x=0;x<len/2;x++) { 04772 ts->v1_1 = ts->v2_1; 04773 ts->v2_1 = ts->v3_1; 04774 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04775 04776 ts->v1_2 = ts->v2_2; 04777 ts->v2_2 = ts->v3_2; 04778 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04779 if (ts->modulate) { 04780 int p; 04781 p = ts->v3_2 - 32768; 04782 if (p < 0) p = -p; 04783 p = ((p * 9) / 10) + 1; 04784 ts->data[x] = (ts->v3_1 * p) >> 15; 04785 } else 04786 ts->data[x] = ts->v3_1 + ts->v3_2; 04787 } 04788 ts->f.frametype = AST_FRAME_VOICE; 04789 ts->f.subclass = AST_FORMAT_SLINEAR; 04790 ts->f.datalen = len; 04791 ts->f.samples = samples; 04792 ts->f.offset = AST_FRIENDLY_OFFSET; 04793 ts->f.data = ts->data; 04794 ast_write(chan, &ts->f); 04795 ts->pos += x; 04796 if (ts->duration > 0) { 04797 if (ts->pos >= ts->duration * 8) 04798 return -1; 04799 } 04800 return 0; 04801 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4718 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04719 { 04720 struct tonepair_state *ts = params; 04721 04722 if (chan) 04723 ast_set_write_format(chan, ts->origwfmt); 04724 free(ts); 04725 }
static void update_bridgepeer | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) | [static] |
Definition at line 4374 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().
04375 { 04376 const char *c0_name; 04377 const char *c1_name; 04378 04379 ast_channel_lock(c1); 04380 c1_name = ast_strdupa(c1->name); 04381 ast_channel_unlock(c1); 04382 04383 ast_channel_lock(c0); 04384 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) { 04385 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1_name); 04386 } 04387 c0_name = ast_strdupa(c0->name); 04388 ast_channel_unlock(c0); 04389 04390 ast_channel_lock(c1); 04391 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) { 04392 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0_name); 04393 } 04394 ast_channel_unlock(c1); 04395 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4879 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 4877 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 4878 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 4990 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 4803 of file channel.c.
Referenced by ast_tonepair_start().