#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <math.h>
#include "asterisk/pbx.h"
#include "asterisk/frame.h"
#include "asterisk/sched.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/audiohook.h"
#include "asterisk/musiconhold.h"
#include "asterisk/logger.h"
#include "asterisk/say.h"
#include "asterisk/file.h"
#include "asterisk/cli.h"
#include "asterisk/translate.h"
#include "asterisk/manager.h"
#include "asterisk/chanvars.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/monitor.h"
#include "asterisk/causes.h"
#include "asterisk/callerid.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/transcap.h"
#include "asterisk/devicestate.h"
#include "asterisk/sha1.h"
#include "asterisk/threadstorage.h"
#include "asterisk/slinfactory.h"
Include dependency graph for channel.c:
Go to the source code of this file.
Data Structures | |
struct | ast_cause |
struct | ast_silence_generator |
struct | chanlist |
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 struct ast_frame * | __ast_read (struct ast_channel *chan, int dropaudio) |
ast_channel * | __ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cid_num, const char *cid_name, struct outgoing_helper *oh) |
int | ast_activate_generator (struct ast_channel *chan, struct ast_generator *gen, void *params) |
int | ast_active_channels (void) |
returns number of active/allocated channels | |
int | ast_answer (struct ast_channel *chan) |
Answer a ringing call. | |
void | ast_begin_shutdown (int hangup) |
Initiate system shutdown. | |
int | ast_best_codec (int fmts) |
Pick the best audio codec. | |
ast_channel * | ast_bridged_channel (struct ast_channel *chan) |
Find bridged channel. | |
int | ast_call (struct ast_channel *chan, char *addr, int timeout) |
Make a call. | |
void | ast_cancel_shutdown (void) |
Cancel a shutdown in progress. | |
const char * | ast_cause2str (int cause) |
Gives the string form of a given hangup cause. | |
void | ast_change_name (struct ast_channel *chan, char *newname) |
Change channel name. | |
ast_channel * | ast_channel_alloc (int needqueue, int state, const char *cid_num, const char *cid_name, const char *acctcode, const char *exten, const char *context, const int amaflag, const char *name_fmt,...) |
Create a channel structure. | |
enum ast_bridge_result | ast_channel_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc) |
Bridge two channels together. | |
int | ast_channel_cmpwhentohangup (struct ast_channel *chan, time_t offset) |
Compare a offset with the settings of when to hang a channel up. | |
int | ast_channel_datastore_add (struct ast_channel *chan, struct ast_datastore *datastore) |
Add a datastore to a channel. | |
ast_datastore * | ast_channel_datastore_alloc (const struct ast_datastore_info *info, char *uid) |
Create a channel datastore structure. | |
ast_datastore * | ast_channel_datastore_find (struct ast_channel *chan, const struct ast_datastore_info *info, char *uid) |
Find a datastore on a channel. | |
int | ast_channel_datastore_free (struct ast_datastore *datastore) |
Free a channel datastore structure. | |
int | ast_channel_datastore_inherit (struct ast_channel *from, struct ast_channel *to) |
Inherit datastores from a parent to a child. | |
int | ast_channel_datastore_remove (struct ast_channel *chan, struct ast_datastore *datastore) |
Remove a datastore from a channel. | |
int | ast_channel_defer_dtmf (struct ast_channel *chan) |
Set defer DTMF flag on channel. | |
void | ast_channel_free (struct ast_channel *chan) |
Free a channel structure. | |
void | ast_channel_inherit_variables (const struct ast_channel *parent, struct ast_channel *child) |
Inherits channel variable from parent to child channel. | |
int | ast_channel_make_compatible (struct ast_channel *chan, struct ast_channel *peer) |
Makes two channel formats compatible. | |
int | ast_channel_masquerade (struct ast_channel *original, struct ast_channel *clone) |
Weird function made for call transfers. | |
char * | ast_channel_reason2str (int reason) |
return an english explanation of the code returned thru __ast_request_and_dial's 'outstate' argument | |
int | ast_channel_register (const struct ast_channel_tech *tech) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports. | |
int | ast_channel_sendhtml (struct ast_channel *chan, int subclass, const char *data, int datalen) |
int | ast_channel_sendurl (struct ast_channel *chan, const char *url) |
int | ast_channel_setoption (struct ast_channel *chan, int option, void *data, int datalen, int block) |
Sets an option on a channel. | |
void | ast_channel_setwhentohangup (struct ast_channel *chan, time_t offset) |
Set when to hang a channel up. | |
ast_silence_generator * | ast_channel_start_silence_generator (struct ast_channel *chan) |
Starts a silence generator on the given channel. | |
void | ast_channel_stop_silence_generator (struct ast_channel *chan, struct ast_silence_generator *state) |
Stops a previously-started silence generator on the given channel. | |
int | ast_channel_supports_html (struct ast_channel *chan) |
void | ast_channel_undefer_dtmf (struct ast_channel *chan) |
Unset defer DTMF flag on channel. | |
void | ast_channel_unregister (const struct ast_channel_tech *tech) |
Unregister a channel technology. | |
ast_channel * | ast_channel_walk_locked (const struct ast_channel *prev) |
Browse channels in use Browse the channels currently in use. | |
void | ast_channels_init (void) |
ast_variable * | ast_channeltype_list (void) |
return an ast_variable list of channeltypes | |
int | ast_check_hangup (struct ast_channel *chan) |
Check to see if a channel is needing hang up. | |
static int | ast_check_hangup_locked (struct ast_channel *chan) |
void | ast_deactivate_generator (struct ast_channel *chan) |
int | ast_do_masquerade (struct ast_channel *original) |
Start masquerading a channel XXX This is a seriously wacked out operation. We're essentially putting the guts of the clone channel into the original channel. Start by killing off the original channel's backend. I'm not sure we're going to keep this function, because while the features are nice, the cost is very high in terms of pure nastiness. XXX. | |
static enum ast_bridge_result | ast_generic_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc, struct timeval bridge_end) |
ast_channel * | ast_get_channel_by_exten_locked (const char *exten, const char *context) |
Get channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_get_channel_by_name_locked (const char *name) |
Get channel by name (locks channel). | |
ast_channel * | ast_get_channel_by_name_prefix_locked (const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
ast_channel_tech * | ast_get_channel_tech (const char *name) |
Get a channel technology structure by name. | |
ast_group_t | ast_get_group (const char *s) |
int | ast_hangup (struct ast_channel *chan) |
Hang up a channel. | |
int | ast_indicate (struct ast_channel *chan, int condition) |
Indicates condition of channel. | |
int | ast_indicate_data (struct ast_channel *chan, int condition, const void *data, size_t datalen) |
Indicates condition of channel, with payload. | |
void | ast_install_music_functions (int(*start_ptr)(struct ast_channel *, const char *, const char *), void(*stop_ptr)(struct ast_channel *), void(*cleanup_ptr)(struct ast_channel *)) |
int | ast_internal_timing_enabled (struct ast_channel *chan) |
Check if the channel can run in internal timing mode. | |
static | AST_LIST_HEAD_NOLOCK_STATIC (backends, chanlist) |
static | AST_LIST_HEAD_STATIC (channels, ast_channel) |
void | ast_moh_cleanup (struct ast_channel *chan) |
int | ast_moh_start (struct ast_channel *chan, const char *mclass, const char *interpclass) |
Turn on music on hold on a given channel. | |
void | ast_moh_stop (struct ast_channel *chan) |
Turn off music on hold on a given channel. | |
char * | ast_print_group (char *buf, int buflen, ast_group_t group) |
print call- and pickup groups into buffer | |
int | ast_prod (struct ast_channel *chan) |
Send empty audio to prime a channel driver. | |
int | ast_queue_control (struct ast_channel *chan, enum ast_control_frame_type control) |
Queue a control frame with payload. | |
int | ast_queue_control_data (struct ast_channel *chan, enum ast_control_frame_type control, const void *data, size_t datalen) |
Queue a control frame with payload. | |
int | ast_queue_frame (struct ast_channel *chan, struct ast_frame *fin) |
Queue an outgoing frame. | |
int | ast_queue_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. | |
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) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_end (struct ast_channel *chan, char digit, unsigned int duration) |
Send a DTMF digit to a channel. | |
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. | |
AST_THREADSTORAGE (state2str_threadbuf, state2str_threadbuf_init) | |
int | ast_tonepair (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
int | ast_tonepair_start (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
void | ast_tonepair_stop (struct ast_channel *chan) |
int | ast_transfer (struct ast_channel *chan, char *dest) |
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested. | |
char * | ast_transfercapability2str (int transfercapability) |
Gives the string form of a given transfer capability. | |
void | ast_uninstall_music_functions (void) |
int | ast_waitfor (struct ast_channel *c, int ms) |
Wait for input on a channel. | |
ast_channel * | ast_waitfor_n (struct ast_channel **c, int n, int *ms) |
Waits for input on a group of channels Wait for input on an array of channels for a given # of milliseconds. | |
int | ast_waitfor_n_fd (int *fds, int n, int *ms, int *exception) |
Waits for input on an fd This version works on fd's only. Be careful with it. | |
ast_channel * | ast_waitfor_nandfds (struct ast_channel **c, int n, int *fds, int nfds, int *exception, int *outfd, int *ms) |
Waits for activity on a group of channels. | |
int | ast_waitfordigit (struct ast_channel *c, int ms) |
Waits for a digit. | |
int | ast_waitfordigit_full (struct ast_channel *c, int ms, int audiofd, int cmdfd) |
Wait for a digit Same as ast_waitfordigit() with audio fd for outputting read audio and ctrlfd to monitor for reading. | |
ast_channel * | ast_walk_channel_by_exten_locked (const struct ast_channel *chan, const char *exten, const char *context) |
Get next channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_walk_channel_by_name_prefix_locked (const struct ast_channel *chan, const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
int | ast_write (struct ast_channel *chan, struct ast_frame *fr) |
Write a frame to a channel This function writes the given frame to the indicated channel. | |
int | ast_write_video (struct ast_channel *chan, struct ast_frame *fr) |
Write video frame to a channel This function writes the given frame to the indicated channel. | |
static void | bridge_playfile (struct ast_channel *chan, struct ast_channel *peer, const char *sound, int remain) |
static struct ast_channel * | channel_find_locked (const struct ast_channel *prev, const char *name, const int namelen, const char *context, const char *exten) |
Helper function to find channels. | |
const char * | channelreloadreason2txt (enum channelreloadreason reason) |
Convert enum channelreloadreason to text string for manager event. | |
static void | clone_variables (struct ast_channel *original, struct ast_channel *clone) |
Clone channel variables from 'clone' channel into 'original' channel. | |
static char * | complete_channeltypes (const char *line, const char *word, int pos, int state) |
static char * | complete_channeltypes_deprecated (const char *line, const char *word, int pos, int state) |
static void | free_cid (struct ast_callerid *cid) |
static void | free_translation (struct ast_channel *clone) |
static int | generator_force (const void *data) |
static int | set_format (struct ast_channel *chan, int fmt, int *rawformat, int *format, struct ast_trans_pvt **trans, const int direction) |
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 * | tonepair_alloc (struct ast_channel *chan, void *params) |
static int | tonepair_generator (struct ast_channel *chan, void *data, int len, int samples) |
static void | tonepair_release (struct ast_channel *chan, void *params) |
Variables | |
static void(*) | ast_moh_cleanup_ptr (struct ast_channel *) = NULL |
static int(*) | ast_moh_start_ptr (struct ast_channel *, const char *, const char *) = NULL |
static void(*) | ast_moh_stop_ptr (struct ast_channel *) = NULL |
ast_cause | causes [] |
static struct ast_cli_entry | cli_channel [] |
static struct ast_cli_entry | cli_show_channeltype_deprecated |
static struct ast_cli_entry | cli_show_channeltypes_deprecated |
unsigned long | global_fin |
unsigned long | global_fout |
static struct ast_channel_tech | null_tech |
static char | show_channeltype_usage [] |
static char | show_channeltypes_usage [] |
static int | shutting_down |
static struct ast_generator | silence_generator |
static struct ast_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().
#define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define MONITOR_DELAY 150 * 8 |
#define STATE2STR_BUFSIZE 32 |
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 1914 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::alertpipe, AST_AUDIOHOOK_DIRECTION_READ, ast_audiohook_write_list(), ast_cdr_alloc(), ast_cdr_answer(), ast_cdr_end(), ast_cdr_init(), ast_cdr_start(), ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, ast_deactivate_generator(), AST_DEFAULT_EMULATE_DTMF_DURATION, ast_do_masquerade(), AST_FLAG_DEFER_DTMF, AST_FLAG_EMULATE_DTMF, AST_FLAG_END_DTMF_ONLY, AST_FLAG_EXCEPTION, AST_FLAG_IN_DTMF, AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_NULL, AST_FRAME_VOICE, ast_frfree, AST_GENERATOR_FD, ast_getformatname(), AST_LIST_EMPTY, AST_LIST_FIRST, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_NEXT, AST_LIST_REMOVE_HEAD, ast_log(), AST_MIN_DTMF_DURATION, AST_MIN_DTMF_GAP, AST_MONITOR_RUNNING, ast_null_frame, ast_read_generator_actions(), ast_seekstream(), ast_set_flag, ast_setstate(), AST_SOFTHANGUP_DEV, AST_STATE_UP, ast_strlen_zero(), ast_test_flag, AST_TIMING_FD, ast_translate(), ast_writestream(), ast_channel::audiohooks, ast_channel::blocker, ast_channel::cdr, ast_frame::data, DEBUGCHAN_FLAG, ast_channel::dtmf_tv, ast_channel::dtmff, ast_channel::dtmfq, 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, FRAMECOUNT_INC, ast_frame::frametype, func, ast_generator::generate, ast_channel::generator, ast_channel::generatordata, ast_channel::insmpl, LOG_DEBUG, LOG_DTMF, LOG_NOTICE, ast_channel::masq, ast_channel::monitor, MONITOR_DELAY, ast_channel::nativeformats, option_debug, ast_channel::outsmpl, ast_channel_tech::read, ast_channel_monitor::read_stream, ast_channel::readtrans, SEEK_FORCECUR, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_read(), and ast_read_noaudio().
01915 { 01916 struct ast_frame *f = NULL; /* the return value */ 01917 int blah; 01918 int prestate; 01919 int count = 0; 01920 01921 /* this function is very long so make sure there is only one return 01922 * point at the end (there are only two exceptions to this). 01923 */ 01924 while(ast_channel_trylock(chan)) { 01925 if(count++ > 10) 01926 /*cannot goto done since the channel is not locked*/ 01927 return &ast_null_frame; 01928 usleep(1); 01929 } 01930 01931 if (chan->masq) { 01932 if (ast_do_masquerade(chan)) 01933 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01934 else 01935 f = &ast_null_frame; 01936 goto done; 01937 } 01938 01939 /* Stop if we're a zombie or need a soft hangup */ 01940 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01941 if (chan->generator) 01942 ast_deactivate_generator(chan); 01943 goto done; 01944 } 01945 prestate = chan->_state; 01946 01947 if (!ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF | AST_FLAG_IN_DTMF) && 01948 !ast_strlen_zero(chan->dtmfq) && 01949 (ast_tvzero(chan->dtmf_tv) || ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) > AST_MIN_DTMF_GAP) ) { 01950 /* We have DTMF that has been deferred. Return it now */ 01951 chan->dtmff.subclass = chan->dtmfq[0]; 01952 /* Drop first digit from the buffer */ 01953 memmove(chan->dtmfq, chan->dtmfq + 1, sizeof(chan->dtmfq) - 1); 01954 f = &chan->dtmff; 01955 if (ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 01956 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 01957 chan->dtmff.frametype = AST_FRAME_DTMF_END; 01958 } else { 01959 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %d queued on %s\n", f->subclass, AST_DEFAULT_EMULATE_DTMF_DURATION, chan->name); 01960 chan->dtmff.frametype = AST_FRAME_DTMF_BEGIN; 01961 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 01962 chan->emulate_dtmf_digit = f->subclass; 01963 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 01964 } 01965 chan->dtmf_tv = ast_tvnow(); 01966 goto done; 01967 } 01968 01969 /* Read and ignore anything on the alertpipe, but read only 01970 one sizeof(blah) per frame that we send from it */ 01971 if (chan->alertpipe[0] > -1) 01972 read(chan->alertpipe[0], &blah, sizeof(blah)); 01973 01974 #ifdef HAVE_ZAPTEL 01975 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 01976 int res; 01977 01978 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 01979 blah = -1; 01980 /* IF we can't get event, assume it's an expired as-per the old interface */ 01981 res = ioctl(chan->timingfd, ZT_GETEVENT, &blah); 01982 if (res) 01983 blah = ZT_EVENT_TIMER_EXPIRED; 01984 01985 if (blah == ZT_EVENT_TIMER_PING) { 01986 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 01987 /* Acknowledge PONG unless we need it again */ 01988 if (ioctl(chan->timingfd, ZT_TIMERPONG, &blah)) { 01989 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 01990 } 01991 } 01992 } else if (blah == ZT_EVENT_TIMER_EXPIRED) { 01993 ioctl(chan->timingfd, ZT_TIMERACK, &blah); 01994 if (chan->timingfunc) { 01995 /* save a copy of func/data before unlocking the channel */ 01996 int (*func)(const void *) = chan->timingfunc; 01997 void *data = chan->timingdata; 01998 ast_channel_unlock(chan); 01999 func(data); 02000 } else { 02001 blah = 0; 02002 ioctl(chan->timingfd, ZT_TIMERCONFIG, &blah); 02003 chan->timingdata = NULL; 02004 ast_channel_unlock(chan); 02005 } 02006 /* cannot 'goto done' because the channel is already unlocked */ 02007 return &ast_null_frame; 02008 } else 02009 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02010 } else 02011 #endif 02012 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02013 /* if the AST_GENERATOR_FD is set, call the generator with args 02014 * set to -1 so it can do whatever it needs to. 02015 */ 02016 void *tmp = chan->generatordata; 02017 chan->generatordata = NULL; /* reset to let ast_write get through */ 02018 chan->generator->generate(chan, tmp, -1, -1); 02019 chan->generatordata = tmp; 02020 f = &ast_null_frame; 02021 goto done; 02022 } 02023 02024 /* Check for pending read queue */ 02025 if (!AST_LIST_EMPTY(&chan->readq)) { 02026 f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list); 02027 /* Interpret hangup and return NULL */ 02028 /* XXX why not the same for frames from the channel ? */ 02029 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02030 ast_frfree(f); 02031 f = NULL; 02032 } 02033 } else { 02034 chan->blocker = pthread_self(); 02035 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02036 if (chan->tech->exception) 02037 f = chan->tech->exception(chan); 02038 else { 02039 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02040 f = &ast_null_frame; 02041 } 02042 /* Clear the exception flag */ 02043 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02044 } else if (chan->tech->read) 02045 f = chan->tech->read(chan); 02046 else 02047 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02048 } 02049 02050 if (f) { 02051 /* if the channel driver returned more than one frame, stuff the excess 02052 into the readq for the next ast_read call (note that we can safely assume 02053 that the readq is empty, because otherwise we would not have called into 02054 the channel driver and f would be only a single frame) 02055 */ 02056 if (AST_LIST_NEXT(f, frame_list)) { 02057 AST_LIST_HEAD_SET_NOLOCK(&chan->readq, AST_LIST_NEXT(f, frame_list)); 02058 AST_LIST_NEXT(f, frame_list) = NULL; 02059 } 02060 02061 switch (f->frametype) { 02062 case AST_FRAME_CONTROL: 02063 if (f->subclass == AST_CONTROL_ANSWER) { 02064 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02065 if (option_debug) 02066 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02067 ast_frfree(f); 02068 f = &ast_null_frame; 02069 } else if (prestate == AST_STATE_UP) { 02070 if (option_debug) 02071 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02072 ast_frfree(f); 02073 f = &ast_null_frame; 02074 } else { 02075 /* Answer the CDR */ 02076 ast_setstate(chan, AST_STATE_UP); 02077 if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore, 02078 to keep from throwing off the basic order of the universe, 02079 we will try to keep this cdr from getting posted. */ 02080 chan->cdr = ast_cdr_alloc(); 02081 ast_cdr_init(chan->cdr, chan); 02082 ast_cdr_start(chan->cdr); 02083 } 02084 02085 ast_cdr_answer(chan->cdr); 02086 } 02087 } 02088 break; 02089 case AST_FRAME_DTMF_END: 02090 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02091 /* Queue it up if DTMF is deffered, or if DTMF emulation is forced. 02092 * However, only let emulation be forced if the other end cares about BEGIN frames */ 02093 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || 02094 (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) ) { 02095 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) { 02096 ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name); 02097 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02098 } else 02099 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02100 ast_frfree(f); 02101 f = &ast_null_frame; 02102 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02103 if (!ast_tvzero(chan->dtmf_tv) && 02104 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02105 /* If it hasn't been long enough, defer this digit */ 02106 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) { 02107 ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name); 02108 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02109 } else 02110 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02111 ast_frfree(f); 02112 f = &ast_null_frame; 02113 } else { 02114 /* There was no begin, turn this into a begin and send the end later */ 02115 f->frametype = AST_FRAME_DTMF_BEGIN; 02116 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02117 chan->emulate_dtmf_digit = f->subclass; 02118 chan->dtmf_tv = ast_tvnow(); 02119 if (f->len) { 02120 if (f->len > AST_MIN_DTMF_DURATION) 02121 chan->emulate_dtmf_duration = f->len; 02122 else 02123 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02124 } else 02125 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02126 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02127 } 02128 if (chan->audiohooks) { 02129 struct ast_frame *old_frame = f; 02130 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02131 if (old_frame != f) 02132 ast_frfree(old_frame); 02133 } 02134 } else { 02135 struct timeval now = ast_tvnow(); 02136 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02137 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02138 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02139 if (!f->len) 02140 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02141 } else if (!f->len) { 02142 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02143 f->len = AST_MIN_DTMF_DURATION; 02144 } 02145 if (f->len < AST_MIN_DTMF_DURATION) { 02146 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); 02147 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02148 chan->emulate_dtmf_digit = f->subclass; 02149 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02150 ast_frfree(f); 02151 f = &ast_null_frame; 02152 } else { 02153 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02154 chan->dtmf_tv = now; 02155 } 02156 if (chan->audiohooks) { 02157 struct ast_frame *old_frame = f; 02158 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02159 if (old_frame != f) 02160 ast_frfree(old_frame); 02161 } 02162 } 02163 break; 02164 case AST_FRAME_DTMF_BEGIN: 02165 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02166 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 02167 (!ast_tvzero(chan->dtmf_tv) && 02168 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02169 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02170 ast_frfree(f); 02171 f = &ast_null_frame; 02172 } else { 02173 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02174 chan->dtmf_tv = ast_tvnow(); 02175 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02176 } 02177 break; 02178 case AST_FRAME_NULL: 02179 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02180 * is reached , because we want to make sure we pass at least one 02181 * voice frame through before starting the next digit, to ensure a gap 02182 * between DTMF digits. */ 02183 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02184 struct timeval now = ast_tvnow(); 02185 if (!chan->emulate_dtmf_duration) { 02186 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02187 chan->emulate_dtmf_digit = 0; 02188 } else if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02189 chan->emulate_dtmf_duration = 0; 02190 ast_frfree(f); 02191 f = &chan->dtmff; 02192 f->frametype = AST_FRAME_DTMF_END; 02193 f->subclass = chan->emulate_dtmf_digit; 02194 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02195 chan->dtmf_tv = now; 02196 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02197 chan->emulate_dtmf_digit = 0; 02198 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02199 } 02200 } 02201 break; 02202 case AST_FRAME_VOICE: 02203 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02204 * is reached , because we want to make sure we pass at least one 02205 * voice frame through before starting the next digit, to ensure a gap 02206 * between DTMF digits. */ 02207 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02208 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02209 chan->emulate_dtmf_digit = 0; 02210 } 02211 02212 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02213 if (dropaudio) 02214 ast_read_generator_actions(chan, f); 02215 ast_frfree(f); 02216 f = &ast_null_frame; 02217 } 02218 02219 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02220 struct timeval now = ast_tvnow(); 02221 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02222 chan->emulate_dtmf_duration = 0; 02223 ast_frfree(f); 02224 f = &chan->dtmff; 02225 f->frametype = AST_FRAME_DTMF_END; 02226 f->subclass = chan->emulate_dtmf_digit; 02227 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02228 chan->dtmf_tv = now; 02229 if (chan->audiohooks) { 02230 struct ast_frame *old_frame = f; 02231 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02232 if (old_frame != f) 02233 ast_frfree(old_frame); 02234 } 02235 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02236 } else { 02237 /* Drop voice frames while we're still in the middle of the digit */ 02238 ast_frfree(f); 02239 f = &ast_null_frame; 02240 } 02241 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02242 /* This frame can't be from the current native formats -- drop it on the 02243 floor */ 02244 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02245 chan->name, ast_getformatname(f->subclass), ast_getformatname(chan->nativeformats)); 02246 ast_frame_dump(chan->name, f, "<<"); 02247 ast_frfree(f); 02248 f = &ast_null_frame; 02249 } else if ((f->frametype == AST_FRAME_VOICE)) { 02250 if (chan->audiohooks) { 02251 struct ast_frame *old_frame = f; 02252 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02253 if (old_frame != f) 02254 ast_frfree(old_frame); 02255 } 02256 if (chan->monitor && chan->monitor->read_stream ) { 02257 /* XXX what does this do ? */ 02258 #ifndef MONITOR_CONSTANT_DELAY 02259 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02260 if (jump >= 0) { 02261 jump = chan->outsmpl - chan->insmpl; 02262 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02263 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02264 chan->insmpl += jump + f->samples; 02265 } else 02266 chan->insmpl+= f->samples; 02267 #else 02268 int jump = chan->outsmpl - chan->insmpl; 02269 if (jump - MONITOR_DELAY >= 0) { 02270 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02271 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02272 chan->insmpl += jump; 02273 } else 02274 chan->insmpl += f->samples; 02275 #endif 02276 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02277 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02278 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02279 } 02280 } 02281 02282 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) 02283 f = &ast_null_frame; 02284 02285 /* Run generator sitting on the line if timing device not available 02286 * and synchronous generation of outgoing frames is necessary */ 02287 ast_read_generator_actions(chan, f); 02288 } 02289 default: 02290 /* Just pass it on! */ 02291 break; 02292 } 02293 } else { 02294 /* Make sure we always return NULL in the future */ 02295 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02296 if (chan->generator) 02297 ast_deactivate_generator(chan); 02298 /* End the CDR if appropriate */ 02299 if (chan->cdr) 02300 ast_cdr_end(chan->cdr); 02301 } 02302 02303 /* High bit prints debugging */ 02304 if (chan->fin & DEBUGCHAN_FLAG) 02305 ast_frame_dump(chan->name, f, "<<"); 02306 chan->fin = FRAMECOUNT_INC(chan->fin); 02307 02308 done: 02309 ast_channel_unlock(chan); 02310 return f; 02311 }
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 2823 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, AST_CAUSE_NO_ANSWER, ast_cdr_alloc(), ast_cdr_disposition(), ast_cdr_end(), ast_cdr_failed(), ast_cdr_init(), ast_cdr_setaccount(), ast_cdr_setapp(), ast_cdr_start(), ast_cdr_update(), ast_channel_inherit_variables(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FRAME_CONTROL, ast_frfree, ast_hangup(), ast_log(), ast_read(), ast_request(), ast_set_callerid(), ast_set_variables(), AST_STATE_UP, ast_strlen_zero(), ast_waitfor(), ast_channel::cdr, outgoing_helper::cid_name, outgoing_helper::cid_num, outgoing_helper::context, ast_channel::context, outgoing_helper::exten, ast_channel::exten, f, ast_channel::hangupcause, LOG_NOTICE, outgoing_helper::parent_channel, outgoing_helper::priority, ast_channel::priority, and outgoing_helper::vars.
Referenced by ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_request_and_dial(), and parkandannounce_exec().
02824 { 02825 int dummy_outstate; 02826 int cause = 0; 02827 struct ast_channel *chan; 02828 int res = 0; 02829 int last_subclass = 0; 02830 02831 if (outstate) 02832 *outstate = 0; 02833 else 02834 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 02835 02836 chan = ast_request(type, format, data, &cause); 02837 if (!chan) { 02838 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 02839 /* compute error and return */ 02840 if (cause == AST_CAUSE_BUSY) 02841 *outstate = AST_CONTROL_BUSY; 02842 else if (cause == AST_CAUSE_CONGESTION) 02843 *outstate = AST_CONTROL_CONGESTION; 02844 return NULL; 02845 } 02846 02847 if (oh) { 02848 if (oh->vars) 02849 ast_set_variables(chan, oh->vars); 02850 /* XXX why is this necessary, for the parent_channel perhaps ? */ 02851 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 02852 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 02853 if (oh->parent_channel) 02854 ast_channel_inherit_variables(oh->parent_channel, chan); 02855 if (oh->account) 02856 ast_cdr_setaccount(chan, oh->account); 02857 } 02858 ast_set_callerid(chan, cid_num, cid_name, cid_num); 02859 02860 02861 02862 if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore, 02863 to keep from throwing off the basic order of the universe, 02864 we will try to keep this cdr from getting posted. */ 02865 chan->cdr = ast_cdr_alloc(); 02866 ast_cdr_init(chan->cdr, chan); 02867 ast_cdr_start(chan->cdr); 02868 } 02869 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 02870 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 02871 } else { 02872 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 02873 while (timeout && chan->_state != AST_STATE_UP) { 02874 struct ast_frame *f; 02875 res = ast_waitfor(chan, timeout); 02876 if (res <= 0) /* error, timeout, or done */ 02877 break; 02878 if (timeout > -1) 02879 timeout = res; 02880 f = ast_read(chan); 02881 if (!f) { 02882 *outstate = AST_CONTROL_HANGUP; 02883 res = 0; 02884 break; 02885 } 02886 if (f->frametype == AST_FRAME_CONTROL) { 02887 switch (f->subclass) { 02888 case AST_CONTROL_RINGING: /* record but keep going */ 02889 *outstate = f->subclass; 02890 break; 02891 02892 case AST_CONTROL_BUSY: 02893 case AST_CONTROL_CONGESTION: 02894 case AST_CONTROL_ANSWER: 02895 *outstate = f->subclass; 02896 timeout = 0; /* trick to force exit from the while() */ 02897 break; 02898 02899 /* Ignore these */ 02900 case AST_CONTROL_PROGRESS: 02901 case AST_CONTROL_PROCEEDING: 02902 case AST_CONTROL_HOLD: 02903 case AST_CONTROL_UNHOLD: 02904 case AST_CONTROL_VIDUPDATE: 02905 case AST_CONTROL_SRCUPDATE: 02906 case -1: /* Ignore -- just stopping indications */ 02907 break; 02908 02909 default: 02910 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 02911 } 02912 last_subclass = f->subclass; 02913 } 02914 ast_frfree(f); 02915 } 02916 } 02917 02918 /* Final fixups */ 02919 if (oh) { 02920 if (!ast_strlen_zero(oh->context)) 02921 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 02922 if (!ast_strlen_zero(oh->exten)) 02923 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 02924 if (oh->priority) 02925 chan->priority = oh->priority; 02926 } 02927 if (chan->_state == AST_STATE_UP) 02928 *outstate = AST_CONTROL_ANSWER; 02929 02930 if (res <= 0) { 02931 if ( AST_CONTROL_RINGING == last_subclass ) 02932 chan->hangupcause = AST_CAUSE_NO_ANSWER; 02933 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 02934 ast_cdr_init(chan->cdr, chan); 02935 if (chan->cdr) { 02936 char tmp[256]; 02937 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 02938 ast_cdr_setapp(chan->cdr,"Dial",tmp); 02939 ast_cdr_update(chan); 02940 ast_cdr_start(chan->cdr); 02941 ast_cdr_end(chan->cdr); 02942 /* If the cause wasn't handled properly */ 02943 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 02944 ast_cdr_failed(chan->cdr); 02945 } 02946 ast_hangup(chan); 02947 chan = NULL; 02948 } 02949 return chan; 02950 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1587 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 milliwatt_exec().
01588 { 01589 int res = 0; 01590 01591 ast_channel_lock(chan); 01592 01593 if (chan->generatordata) { 01594 if (chan->generator && chan->generator->release) 01595 chan->generator->release(chan, chan->generatordata); 01596 chan->generatordata = NULL; 01597 } 01598 01599 ast_prod(chan); 01600 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01601 res = -1; 01602 } 01603 01604 if (!res) { 01605 ast_settimeout(chan, 160, generator_force, chan); 01606 chan->generator = gen; 01607 } 01608 01609 ast_channel_unlock(chan); 01610 01611 return res; 01612 }
int ast_active_channels | ( | void | ) |
returns number of active/allocated channels
Returns number of active/allocated channels
Definition at line 442 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, and channels.
Referenced by quit_handler().
00443 { 00444 struct ast_channel *c; 00445 int cnt = 0; 00446 AST_LIST_LOCK(&channels); 00447 AST_LIST_TRAVERSE(&channels, c, chan_list) 00448 cnt++; 00449 AST_LIST_UNLOCK(&channels); 00450 return cnt; 00451 }
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 1508 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_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(), action_bridge(), agi_exec_full(), alarmreceiver_exec(), app_exec(), ast_bridge_call(), ast_control_streamfile(), ast_pickup_call(), auth_exec(), background_detect_exec(), bridge_exec(), builtin_parkcall(), common_exec(), conf_exec(), count_exec(), dictate_exec(), directory_exec(), disa_exec(), features_answer(), handle_answer(), ices_exec(), milliwatt_exec(), mwanalyze_exec(), nv_background_detect_exec(), nv_detectfax_exec(), park_call_exec(), park_exec(), pbx_builtin_answer(), pbx_builtin_background(), pickup_channel(), pickup_do(), playback_exec(), privacy_exec(), read_exec(), run_station(), rxfax_exec(), sayunixtime_exec(), send_waveform_to_channel(), skel_exec(), sla_handle_dial_state_event(), sla_station_exec(), speech_background(), steal_channel(), testclient_exec(), testserver_exec(), txfax_exec(), vm_exec(), vm_execmain(), waitforsilence_exec(), zapateller_exec(), and zapras_exec().
01509 { 01510 int res = 0; 01511 ast_channel_lock(chan); 01512 /* You can't answer an outbound call */ 01513 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01514 ast_channel_unlock(chan); 01515 return 0; 01516 } 01517 /* Stop if we're a zombie or need a soft hangup */ 01518 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01519 ast_channel_unlock(chan); 01520 return -1; 01521 } 01522 switch(chan->_state) { 01523 case AST_STATE_RINGING: 01524 case AST_STATE_RING: 01525 if (chan->tech->answer) 01526 res = chan->tech->answer(chan); 01527 ast_setstate(chan, AST_STATE_UP); 01528 ast_cdr_answer(chan->cdr); 01529 break; 01530 case AST_STATE_UP: 01531 ast_cdr_answer(chan->cdr); 01532 break; 01533 default: 01534 break; 01535 } 01536 chan->visible_indication = 0; 01537 ast_channel_unlock(chan); 01538 return res; 01539 }
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 429 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_softhangup(), AST_SOFTHANGUP_SHUTDOWN, and channels.
Referenced by quit_handler().
00430 { 00431 struct ast_channel *c; 00432 shutting_down = 1; 00433 if (hangup) { 00434 AST_LIST_LOCK(&channels); 00435 AST_LIST_TRAVERSE(&channels, c, chan_list) 00436 ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN); 00437 AST_LIST_UNLOCK(&channels); 00438 } 00439 }
int ast_best_codec | ( | int | fmts | ) |
Pick the best audio codec.
Pick the best codec
G.722 is better then all codecs in this list
alaw used by all telephone equipment at Russia
Okay, well, signed linear is easy to translate into other stuff! slinear<->alaw recoding very fast
ulaw standart for USA and Japan
Speex is free, but computationally more expensive than GSM
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
G.729a is faster than 723 and slightly less expensive
Down to G.723.1 which is proprietary but at least designed for voice
Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough to use it
Definition at line 654 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_channel_best_codec(), ast_codec_choose(), ast_iax2_new(), builtin_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().
00655 { 00656 /* This just our opinion, expressed in code. We are asked to choose 00657 the best codec to use, given no information */ 00658 int x; 00659 static int prefs[] = 00660 { 00661 /*! G.722 is better then all codecs in this list */ 00662 AST_FORMAT_G722, 00663 /*! alaw used by all telephone equipment at Russia */ 00664 AST_FORMAT_ALAW, 00665 /*! Okay, well, signed linear is easy to translate into other stuff! slinear<->alaw recoding very fast */ 00666 AST_FORMAT_SLINEAR, 00667 /*! ulaw standart for USA and Japan */ 00668 AST_FORMAT_ULAW, 00669 /*! Speex is free, but computationally more expensive than GSM */ 00670 AST_FORMAT_SPEEX, 00671 /*! G.726 is standard ADPCM, in RFC3551 packing order */ 00672 AST_FORMAT_G726, 00673 /*! G.726 is standard ADPCM, in AAL2 packing order */ 00674 AST_FORMAT_G726_AAL2, 00675 /*! ADPCM has great sound quality and is still pretty easy to translate */ 00676 AST_FORMAT_ADPCM, 00677 /*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to 00678 translate and sounds pretty good */ 00679 AST_FORMAT_GSM, 00680 /*! iLBC is not too bad */ 00681 AST_FORMAT_ILBC, 00682 /*! G.729a is faster than 723 and slightly less expensive */ 00683 AST_FORMAT_G729A, 00684 /*! Down to G.723.1 which is proprietary but at least designed for voice */ 00685 AST_FORMAT_G723_1, 00686 /*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough 00687 to use it */ 00688 AST_FORMAT_LPC10, 00689 }; 00690 00691 /* Strip out video */ 00692 fmts &= AST_FORMAT_AUDIO_MASK; 00693 00694 /* Find the first preferred codec in the format given */ 00695 for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++) 00696 if (fmts & prefs[x]) 00697 return prefs[x]; 00698 ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts); 00699 return 0; 00700 }
struct ast_channel* ast_bridged_channel | ( | struct ast_channel * | chan | ) |
Find bridged channel.
chan | Current channel |
Definition at line 3662 of file channel.c.
References ast_channel::_bridge, ast_channel_tech::bridged_channel, and ast_channel::tech.
Referenced by __zt_exception(), action_agents(), agents_show(), agents_show_online(), ast_channel_masquerade(), attempt_transfer(), check_bridge(), common_exec(), console_transfer(), console_transfer_deprecated(), create_jb(), export_aoc_vars(), handle_chanlist(), handle_chanlist_deprecated(), handle_hd_hf(), handle_invite_replaces(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response_invite(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_hangup(), mgcp_ss(), misdn_transfer_bc(), mixmonitor_thread(), schedule_delivery(), sip_read(), socket_process(), ss_thread(), start_spying(), startmon(), zt_handle_event(), and zt_hangup().
03663 { 03664 struct ast_channel *bridged; 03665 bridged = chan->_bridge; 03666 if (bridged && bridged->tech->bridged_channel) 03667 bridged = bridged->tech->bridged_channel(chan, bridged); 03668 return bridged; 03669 }
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 3007 of file channel.c.
References 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, and ast_channel::tech.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), connect_link(), features_call(), findmeexec(), ring_entry(), rpt(), and wait_for_answer().
03008 { 03009 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03010 If the remote end does not answer within the timeout, then do NOT hang up, but 03011 return anyway. */ 03012 int res = -1; 03013 /* Stop if we're a zombie or need a soft hangup */ 03014 ast_channel_lock(chan); 03015 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03016 if (chan->tech->call) 03017 res = chan->tech->call(chan, addr, timeout); 03018 ast_set_flag(chan, AST_FLAG_OUTGOING); 03019 } 03020 ast_channel_unlock(chan); 03021 return res; 03022 }
void ast_cancel_shutdown | ( | void | ) |
Cancel a shutdown in progress.
Cancels an existing shutdown and returns to normal operation
Definition at line 454 of file channel.c.
Referenced by handle_abort_halt().
00455 { 00456 shutting_down = 0; 00457 }
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 574 of file channel.c.
Referenced by __transmit_response(), ast_do_masquerade(), ast_hangup(), findmeexec(), sip_hangup(), and transmit_request_with_auth().
00575 { 00576 int x; 00577 00578 for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) { 00579 if (causes[x].cause == cause) 00580 return causes[x].desc; 00581 } 00582 00583 return "Unknown"; 00584 }
void ast_change_name | ( | struct ast_channel * | chan, | |
char * | newname | |||
) |
Change channel name.
Definition at line 3255 of file channel.c.
References ast_string_field_set, manager_event(), and name.
03256 { 03257 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03258 ast_string_field_set(chan, name, newname); 03259 }
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 708 of file channel.c.
References ast_calloc, ast_log(), AST_MAX_FDS, ast_string_field_init, ast_channel::flags, free, HAVE_ZAPTEL, LOG_WARNING, sched_context_create(), and sched_context_destroy().
Referenced by __oh323_new(), acf_odbc_read(), acf_odbc_write(), action_bridge(), agent_new(), alsa_new(), ast_async_goto(), ast_iax2_new(), ast_masq_park_call(), ast_pbx_outgoing_cdr_failed(), ast_pbx_outgoing_exten(), bridge_exec(), builtin_atxfer(), check_goto_on_transfer(), features_new(), gtalk_new(), iax_park(), local_new(), make_email_file(), mgcp_new(), misdn_new(), nbs_new(), oss_new(), pbx_substitute_variables_helper_full(), phone_new(), sendpage(), sip_new(), sip_park(), skinny_new(), and zt_new().
00709 { 00710 struct ast_channel *tmp; 00711 int x; 00712 int flags; 00713 struct varshead *headp; 00714 va_list ap1, ap2; 00715 00716 /* If shutting down, don't allocate any new channels */ 00717 if (shutting_down) { 00718 ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n"); 00719 return NULL; 00720 } 00721 00722 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) 00723 return NULL; 00724 00725 if (!(tmp->sched = sched_context_create())) { 00726 ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n"); 00727 free(tmp); 00728 return NULL; 00729 } 00730 00731 if ((ast_string_field_init(tmp, 128))) { 00732 sched_context_destroy(tmp->sched); 00733 free(tmp); 00734 return NULL; 00735 } 00736 00737 /* Don't bother initializing the last two FD here, because they 00738 will *always* be set just a few lines down (AST_TIMING_FD, 00739 AST_ALERT_FD). */ 00740 for (x = 0; x < AST_MAX_FDS - 2; x++) 00741 tmp->fds[x] = -1; 00742 00743 #ifdef HAVE_ZAPTEL 00744 tmp->timingfd = open("/dev/zap/timer", O_RDWR); 00745 if (tmp->timingfd > -1) { 00746 /* Check if timing interface supports new 00747 ping/pong scheme */ 00748 flags = 1; 00749 if (!ioctl(tmp->timingfd, ZT_TIMERPONG, &flags)) 00750 needqueue = 0; 00751 } 00752 #else 00753 tmp->timingfd = -1; 00754 #endif 00755 00756 if (needqueue) { 00757 if (pipe(tmp->alertpipe)) { 00758 ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe!\n"); 00759 #ifdef HAVE_ZAPTEL 00760 if (tmp->timingfd > -1) 00761 close(tmp->timingfd); 00762 #endif 00763 sched_context_destroy(tmp->sched); 00764 ast_string_field_free_memory(tmp); 00765 free(tmp); 00766 return NULL; 00767 } else { 00768 flags = fcntl(tmp->alertpipe[0], F_GETFL); 00769 fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK); 00770 flags = fcntl(tmp->alertpipe[1], F_GETFL); 00771 fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK); 00772 } 00773 } else /* Make sure we've got it done right if they don't */ 00774 tmp->alertpipe[0] = tmp->alertpipe[1] = -1; 00775 00776 /* Always watch the alertpipe */ 00777 tmp->fds[AST_ALERT_FD] = tmp->alertpipe[0]; 00778 /* And timing pipe */ 00779 tmp->fds[AST_TIMING_FD] = tmp->timingfd; 00780 ast_string_field_set(tmp, name, "**Unknown**"); 00781 00782 /* Initial state */ 00783 tmp->_state = state; 00784 00785 tmp->streamid = -1; 00786 00787 tmp->fin = global_fin; 00788 tmp->fout = global_fout; 00789 00790 if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) { 00791 ast_string_field_build(tmp, uniqueid, "%li.%d", (long) time(NULL), 00792 ast_atomic_fetchadd_int(&uniqueint, 1)); 00793 } else { 00794 ast_string_field_build(tmp, uniqueid, "%s-%li.%d", ast_config_AST_SYSTEM_NAME, 00795 (long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00796 } 00797 00798 tmp->cid.cid_name = ast_strdup(cid_name); 00799 tmp->cid.cid_num = ast_strdup(cid_num); 00800 00801 if (!ast_strlen_zero(name_fmt)) { 00802 /* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call. 00803 * And they all use slightly different formats for their name string. 00804 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here. 00805 * This means, that the stringfields must have a routine that takes the va_lists directly, and 00806 * uses them to build the string, instead of forming the va_lists internally from the vararg ... list. 00807 * This new function was written so this can be accomplished. 00808 */ 00809 va_start(ap1, name_fmt); 00810 va_start(ap2, name_fmt); 00811 ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2); 00812 va_end(ap1); 00813 va_end(ap2); 00814 } 00815 00816 /* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */ 00817 00818 /* These 4 variables need to be set up for the cdr_init() to work right */ 00819 if (amaflag) 00820 tmp->amaflags = amaflag; 00821 else 00822 tmp->amaflags = ast_default_amaflags; 00823 00824 if (!ast_strlen_zero(acctcode)) 00825 ast_string_field_set(tmp, accountcode, acctcode); 00826 else 00827 ast_string_field_set(tmp, accountcode, ast_default_accountcode); 00828 00829 if (!ast_strlen_zero(context)) 00830 ast_copy_string(tmp->context, context, sizeof(tmp->context)); 00831 else 00832 strcpy(tmp->context, "default"); 00833 00834 if (!ast_strlen_zero(exten)) 00835 ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); 00836 else 00837 strcpy(tmp->exten, "s"); 00838 00839 tmp->priority = 1; 00840 00841 tmp->cdr = ast_cdr_alloc(); 00842 ast_cdr_init(tmp->cdr, tmp); 00843 ast_cdr_start(tmp->cdr); 00844 00845 headp = &tmp->varshead; 00846 AST_LIST_HEAD_INIT_NOLOCK(headp); 00847 00848 ast_mutex_init(&tmp->lock); 00849 00850 AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores); 00851 00852 ast_string_field_set(tmp, language, defaultlanguage); 00853 00854 tmp->tech = &null_tech; 00855 00856 AST_LIST_LOCK(&channels); 00857 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00858 AST_LIST_UNLOCK(&channels); 00859 00860 /*\!note 00861 * and now, since the channel structure is built, and has its name, let's 00862 * call the manager event generator with this Newchannel event. This is the 00863 * proper and correct place to make this call, but you sure do have to pass 00864 * a lot of data into this func to do it here! 00865 */ 00866 if (!ast_strlen_zero(name_fmt)) { 00867 manager_event(EVENT_FLAG_CALL, "Newchannel", 00868 "Channel: %s\r\n" 00869 "State: %s\r\n" 00870 "CallerIDNum: %s\r\n" 00871 "CallerIDName: %s\r\n" 00872 "Uniqueid: %s\r\n", 00873 tmp->name, ast_state2str(state), 00874 S_OR(cid_num, "<unknown>"), 00875 S_OR(cid_name, "<unknown>"), 00876 tmp->uniqueid); 00877 } 00878 00879 return tmp; 00880 }
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 3852 of file channel.c.
References ast_channel::_bridge, ast_channel::_softhangup, AST_BRIDGE_COMPLETE, AST_BRIDGE_FAILED, AST_BRIDGE_FAILED_NOWARN, AST_BRIDGE_RETRY, ast_channel_make_compatible(), ast_check_hangup(), ast_check_hangup_locked(), ast_clear_flag, AST_CONTROL_SRCUPDATE, AST_FEATURE_PLAY_WARNING, AST_FEATURE_REDIRECT, AST_FLAG_END_DTMF_ONLY, AST_FLAG_NBRIDGE, AST_FLAG_ZOMBIE, ast_generic_bridge(), ast_indicate(), ast_log(), ast_set_flag, AST_SOFTHANGUP_UNBRIDGE, ast_strlen_zero(), ast_test_flag, ast_tvadd(), ast_tvsub(), 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::nativeformats, option_debug, option_verbose, pbx_builtin_getvar_helper(), pbx_builtin_setvar_helper(), ast_channel::readformat, ast_channel_tech::send_digit_begin, t, ast_channel::tech, VERBOSE_PREFIX_3, and ast_channel::writeformat.
Referenced by ast_bridge_call().
03854 { 03855 struct ast_channel *who = NULL; 03856 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03857 int nativefailed=0; 03858 int firstpass; 03859 int o0nativeformats; 03860 int o1nativeformats; 03861 long time_left_ms=0; 03862 struct timeval nexteventts = { 0, }; 03863 char caller_warning = 0; 03864 char callee_warning = 0; 03865 03866 if (c0->_bridge) { 03867 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 03868 c0->name, c0->_bridge->name); 03869 return -1; 03870 } 03871 if (c1->_bridge) { 03872 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 03873 c1->name, c1->_bridge->name); 03874 return -1; 03875 } 03876 03877 /* Stop if we're a zombie or need a soft hangup */ 03878 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 03879 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 03880 return -1; 03881 03882 *fo = NULL; 03883 firstpass = config->firstpass; 03884 config->firstpass = 0; 03885 03886 if (ast_tvzero(config->start_time)) 03887 config->start_time = ast_tvnow(); 03888 time_left_ms = config->timelimit; 03889 03890 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 03891 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 03892 03893 if (config->start_sound && firstpass) { 03894 if (caller_warning) 03895 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 03896 if (callee_warning) 03897 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 03898 } 03899 03900 /* Keep track of bridge */ 03901 c0->_bridge = c1; 03902 c1->_bridge = c0; 03903 03904 /* \todo XXX here should check that cid_num is not NULL */ 03905 manager_event(EVENT_FLAG_CALL, "Link", 03906 "Channel1: %s\r\n" 03907 "Channel2: %s\r\n" 03908 "Uniqueid1: %s\r\n" 03909 "Uniqueid2: %s\r\n" 03910 "CallerID1: %s\r\n" 03911 "CallerID2: %s\r\n", 03912 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 03913 03914 o0nativeformats = c0->nativeformats; 03915 o1nativeformats = c1->nativeformats; 03916 03917 if (config->feature_timer) { 03918 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 03919 } else if (config->timelimit) { 03920 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 03921 if (caller_warning || callee_warning) 03922 nexteventts = ast_tvsub(nexteventts, ast_samp2tv(config->play_warning, 1000)); 03923 } 03924 03925 if (!c0->tech->send_digit_begin) 03926 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 03927 if (!c1->tech->send_digit_begin) 03928 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 03929 03930 /* Before we enter in and bridge these two together tell them both the source of audio has changed */ 03931 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 03932 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 03933 03934 for (/* ever */;;) { 03935 struct timeval now = { 0, }; 03936 int to; 03937 03938 to = -1; 03939 03940 if (!ast_tvzero(nexteventts)) { 03941 now = ast_tvnow(); 03942 to = ast_tvdiff_ms(nexteventts, now); 03943 if (to <= 0) { 03944 if (!config->timelimit) { 03945 res = AST_BRIDGE_COMPLETE; 03946 break; 03947 } 03948 to = 0; 03949 } 03950 } 03951 03952 if (config->timelimit) { 03953 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 03954 if (time_left_ms < to) 03955 to = time_left_ms; 03956 03957 if (time_left_ms <= 0) { 03958 if (caller_warning && config->end_sound) 03959 bridge_playfile(c0, c1, config->end_sound, 0); 03960 if (callee_warning && config->end_sound) 03961 bridge_playfile(c1, c0, config->end_sound, 0); 03962 *fo = NULL; 03963 if (who) 03964 *rc = who; 03965 res = 0; 03966 break; 03967 } 03968 03969 if (!to) { 03970 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning) { 03971 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 03972 if (caller_warning) 03973 bridge_playfile(c0, c1, config->warning_sound, t); 03974 if (callee_warning) 03975 bridge_playfile(c1, c0, config->warning_sound, t); 03976 } 03977 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 03978 nexteventts = ast_tvadd(nexteventts, ast_samp2tv(config->warning_freq, 1000)); 03979 else 03980 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 03981 } 03982 } 03983 03984 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 03985 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03986 c0->_softhangup = 0; 03987 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03988 c1->_softhangup = 0; 03989 c0->_bridge = c1; 03990 c1->_bridge = c0; 03991 if (option_debug) 03992 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 03993 continue; 03994 } 03995 03996 /* Stop if we're a zombie or need a soft hangup */ 03997 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 03998 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 03999 *fo = NULL; 04000 if (who) 04001 *rc = who; 04002 res = 0; 04003 if (option_debug) 04004 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", 04005 c0->name, c1->name, 04006 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04007 ast_check_hangup(c0) ? "Yes" : "No", 04008 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04009 ast_check_hangup(c1) ? "Yes" : "No"); 04010 break; 04011 } 04012 04013 /* See if the BRIDGEPEER variable needs to be updated */ 04014 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) 04015 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name); 04016 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) 04017 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name); 04018 04019 if (c0->tech->bridge && 04020 (config->timelimit == 0) && 04021 (c0->tech->bridge == c1->tech->bridge) && 04022 !nativefailed && !c0->monitor && !c1->monitor && 04023 !c0->audiohooks && !c1->audiohooks && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04024 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04025 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04026 /* Looks like they share a bridge method and nothing else is in the way */ 04027 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04028 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04029 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04030 /* \todo XXX here should check that cid_num is not NULL */ 04031 manager_event(EVENT_FLAG_CALL, "Unlink", 04032 "Channel1: %s\r\n" 04033 "Channel2: %s\r\n" 04034 "Uniqueid1: %s\r\n" 04035 "Uniqueid2: %s\r\n" 04036 "CallerID1: %s\r\n" 04037 "CallerID2: %s\r\n", 04038 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04039 if (option_debug) 04040 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04041 04042 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04043 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04044 04045 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04046 continue; 04047 04048 c0->_bridge = NULL; 04049 c1->_bridge = NULL; 04050 04051 return res; 04052 } else { 04053 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04054 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04055 } 04056 switch (res) { 04057 case AST_BRIDGE_RETRY: 04058 continue; 04059 default: 04060 if (option_verbose > 2) 04061 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04062 c0->name, c1->name); 04063 /* fallthrough */ 04064 case AST_BRIDGE_FAILED_NOWARN: 04065 nativefailed++; 04066 break; 04067 } 04068 } 04069 04070 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04071 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04072 !(c0->generator || c1->generator)) { 04073 if (ast_channel_make_compatible(c0, c1)) { 04074 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04075 /* \todo XXX here should check that cid_num is not NULL */ 04076 manager_event(EVENT_FLAG_CALL, "Unlink", 04077 "Channel1: %s\r\n" 04078 "Channel2: %s\r\n" 04079 "Uniqueid1: %s\r\n" 04080 "Uniqueid2: %s\r\n" 04081 "CallerID1: %s\r\n" 04082 "CallerID2: %s\r\n", 04083 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04084 return AST_BRIDGE_FAILED; 04085 } 04086 o0nativeformats = c0->nativeformats; 04087 o1nativeformats = c1->nativeformats; 04088 } 04089 res = ast_generic_bridge(c0, c1, config, fo, rc, nexteventts); 04090 if (res != AST_BRIDGE_RETRY) 04091 break; 04092 } 04093 04094 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04095 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04096 04097 /* Now that we have broken the bridge the source will change yet again */ 04098 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04099 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04100 04101 c0->_bridge = NULL; 04102 c1->_bridge = NULL; 04103 04104 /* \todo XXX here should check that cid_num is not NULL */ 04105 manager_event(EVENT_FLAG_CALL, "Unlink", 04106 "Channel1: %s\r\n" 04107 "Channel2: %s\r\n" 04108 "Uniqueid1: %s\r\n" 04109 "Uniqueid2: %s\r\n" 04110 "CallerID1: %s\r\n" 04111 "CallerID2: %s\r\n", 04112 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04113 if (option_debug) 04114 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04115 04116 return res; 04117 }
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 474 of file channel.c.
References ast_channel::whentohangup.
00475 { 00476 time_t whentohangup; 00477 00478 if (chan->whentohangup == 0) { 00479 return (offset == 0) ? 0 : -1; 00480 } else { 00481 if (offset == 0) /* XXX why is this special ? */ 00482 return (1); 00483 else { 00484 whentohangup = offset + time (NULL); 00485 if (chan->whentohangup < whentohangup) 00486 return (1); 00487 else if (chan->whentohangup == whentohangup) 00488 return (0); 00489 else 00490 return (-1); 00491 } 00492 } 00493 }
int ast_channel_datastore_add | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Add a datastore to a channel.
Definition at line 1326 of file channel.c.
References AST_LIST_INSERT_HEAD.
Referenced by setup_chanspy_ds(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01327 { 01328 int res = 0; 01329 01330 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01331 01332 return res; 01333 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1265 of file channel.c.
References ast_calloc, ast_strdup, and ast_datastore::info.
Referenced by ast_channel_datastore_inherit(), setup_chanspy_ds(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01266 { 01267 struct ast_datastore *datastore = NULL; 01268 01269 /* Make sure we at least have type so we can identify this */ 01270 if (info == NULL) { 01271 return NULL; 01272 } 01273 01274 /* Allocate memory for datastore and clear it */ 01275 datastore = ast_calloc(1, sizeof(*datastore)); 01276 if (datastore == NULL) { 01277 return NULL; 01278 } 01279 01280 datastore->info = info; 01281 01282 datastore->uid = ast_strdup(uid); 01283 01284 return datastore; 01285 }
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 1353 of file channel.c.
References AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_datastore::info, and ast_datastore::uid.
Referenced by chanspy_ds_free(), find_speech(), smdi_msg_read(), speech_background(), speech_destroy(), and try_calling().
01354 { 01355 struct ast_datastore *datastore = NULL; 01356 01357 if (info == NULL) 01358 return NULL; 01359 01360 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01361 if (datastore->info == info) { 01362 if (uid != NULL && datastore->uid != NULL) { 01363 if (!strcasecmp(uid, datastore->uid)) { 01364 /* Matched by type AND uid */ 01365 break; 01366 } 01367 } else { 01368 /* Matched by type at least */ 01369 break; 01370 } 01371 } 01372 } 01373 AST_LIST_TRAVERSE_SAFE_END 01374 01375 return datastore; 01376 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1287 of file channel.c.
References ast_datastore::data, ast_datastore_info::destroy, free, ast_datastore::info, and ast_datastore::uid.
Referenced by ast_channel_free(), chanspy_ds_free(), and try_calling().
01288 { 01289 int res = 0; 01290 01291 /* Using the destroy function (if present) destroy the data */ 01292 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01293 datastore->info->destroy(datastore->data); 01294 datastore->data = NULL; 01295 } 01296 01297 /* Free allocated UID memory */ 01298 if (datastore->uid != NULL) { 01299 free(datastore->uid); 01300 datastore->uid = NULL; 01301 } 01302 01303 /* Finally free memory used by ourselves */ 01304 free(datastore); 01305 01306 return res; 01307 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1309 of file channel.c.
References ast_channel_datastore_alloc(), AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_datastore::data, DATASTORE_INHERIT_FOREVER, ast_datastore_info::duplicate, ast_datastore::info, ast_datastore::inheritance, and ast_datastore::uid.
Referenced by local_call(), and wait_for_answer().
01310 { 01311 struct ast_datastore *datastore = NULL, *datastore2; 01312 01313 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01314 if (datastore->inheritance > 0) { 01315 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01316 if (datastore2) { 01317 datastore2->data = datastore->info->duplicate(datastore->data); 01318 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01319 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01320 } 01321 } 01322 } 01323 return 0; 01324 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1335 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, and AST_LIST_TRAVERSE_SAFE_END.
Referenced by chanspy_ds_free(), speech_background(), speech_destroy(), and try_calling().
01336 { 01337 struct ast_datastore *datastore2 = NULL; 01338 int res = -1; 01339 01340 /* Find our position and remove ourselves */ 01341 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01342 if (datastore2 == datastore) { 01343 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01344 res = 0; 01345 break; 01346 } 01347 } 01348 AST_LIST_TRAVERSE_SAFE_END 01349 01350 return res; 01351 }
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 974 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
00975 { 00976 int pre = 0; 00977 00978 if (chan) { 00979 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 00980 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 00981 } 00982 return pre; 00983 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1178 of file channel.c.
References ast_channel::alertpipe, ast_app_group_discard(), ast_channel_datastore_free(), ast_channel_lock, AST_CHANNEL_NAME, ast_channel_unlock, ast_device_state_changed_literal(), ast_frfree, ast_jb_destroy(), AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, ast_log(), ast_moh_cleanup(), ast_mutex_destroy(), ast_string_field_free_memory, ast_translator_free_path(), ast_var_delete(), channels, ast_channel::cid, f, free, free_cid(), ast_channel::lock, LOG_ERROR, ast_channel::monitor, ast_channel::music_state, name, ast_channel::pbx, 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_bridge(), agent_cleanup(), agent_new(), ast_do_masquerade(), ast_hangup(), ast_pbx_outgoing_cdr_failed(), local_new(), make_email_file(), pbx_substitute_variables_helper_full(), and sendpage().
01179 { 01180 int fd; 01181 struct ast_var_t *vardata; 01182 struct ast_frame *f; 01183 struct varshead *headp; 01184 struct ast_datastore *datastore = NULL; 01185 char name[AST_CHANNEL_NAME]; 01186 01187 headp=&chan->varshead; 01188 01189 AST_LIST_LOCK(&channels); 01190 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01191 AST_LIST_UNLOCK(&channels); 01192 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01193 } 01194 /* Lock and unlock the channel just to be sure nobody has it locked still 01195 due to a reference retrieved from the channel list. */ 01196 ast_channel_lock(chan); 01197 ast_channel_unlock(chan); 01198 01199 /* Get rid of each of the data stores on the channel */ 01200 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01201 /* Free the data store */ 01202 ast_channel_datastore_free(datastore); 01203 01204 /* Lock and unlock the channel just to be sure nobody has it locked still 01205 due to a reference that was stored in a datastore. (i.e. app_chanspy) */ 01206 ast_channel_lock(chan); 01207 ast_channel_unlock(chan); 01208 01209 if (chan->tech_pvt) { 01210 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01211 free(chan->tech_pvt); 01212 } 01213 01214 if (chan->sched) 01215 sched_context_destroy(chan->sched); 01216 01217 ast_copy_string(name, chan->name, sizeof(name)); 01218 01219 /* Stop monitoring */ 01220 if (chan->monitor) 01221 chan->monitor->stop( chan, 0 ); 01222 01223 /* If there is native format music-on-hold state, free it */ 01224 if (chan->music_state) 01225 ast_moh_cleanup(chan); 01226 01227 /* Free translators */ 01228 if (chan->readtrans) 01229 ast_translator_free_path(chan->readtrans); 01230 if (chan->writetrans) 01231 ast_translator_free_path(chan->writetrans); 01232 if (chan->pbx) 01233 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01234 free_cid(&chan->cid); 01235 /* Close pipes if appropriate */ 01236 if ((fd = chan->alertpipe[0]) > -1) 01237 close(fd); 01238 if ((fd = chan->alertpipe[1]) > -1) 01239 close(fd); 01240 if ((fd = chan->timingfd) > -1) 01241 close(fd); 01242 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01243 ast_frfree(f); 01244 01245 /* loop over the variables list, freeing all data and deleting list items */ 01246 /* no need to lock the list, as the channel is already locked */ 01247 01248 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01249 ast_var_delete(vardata); 01250 01251 ast_app_group_discard(chan); 01252 01253 /* Destroy the jitterbuffer */ 01254 ast_jb_destroy(chan); 01255 01256 ast_mutex_destroy(&chan->lock); 01257 01258 ast_string_field_free_memory(chan); 01259 free(chan); 01260 AST_LIST_UNLOCK(&channels); 01261 01262 ast_device_state_changed_literal(name); 01263 }
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 3261 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(), LOG_DEBUG, option_debug, and ast_channel::varshead.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), begin_dial(), findmeexec(), ring_entry(), and wait_for_answer().
03262 { 03263 struct ast_var_t *current, *newvar; 03264 const char *varname; 03265 03266 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03267 int vartype = 0; 03268 03269 varname = ast_var_full_name(current); 03270 if (!varname) 03271 continue; 03272 03273 if (varname[0] == '_') { 03274 vartype = 1; 03275 if (varname[1] == '_') 03276 vartype = 2; 03277 } 03278 03279 switch (vartype) { 03280 case 1: 03281 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03282 if (newvar) { 03283 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03284 if (option_debug) 03285 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03286 } 03287 break; 03288 case 2: 03289 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03290 if (newvar) { 03291 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03292 if (option_debug) 03293 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03294 } 03295 break; 03296 default: 03297 if (option_debug) 03298 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03299 break; 03300 } 03301 } 03302 }
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 3114 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::nativeformats, ast_channel::readformat, and ast_channel::writeformat.
Referenced by action_bridge(), app_exec(), ast_channel_bridge(), bridge_exec(), check_compat(), park_exec(), try_calling(), and wait_for_answer().
03115 { 03116 int src; 03117 int dst; 03118 03119 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03120 /* Already compatible! Moving on ... */ 03121 return 0; 03122 } 03123 03124 /* Set up translation from the chan to the peer */ 03125 src = chan->nativeformats; 03126 dst = peer->nativeformats; 03127 if (ast_translator_best_choice(&dst, &src) < 0) { 03128 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03129 return -1; 03130 } 03131 03132 /* if the best path is not 'pass through', then 03133 transcoding is needed; if desired, force transcode path 03134 to use SLINEAR between channels, but only if there is 03135 no direct conversion available */ 03136 if ((src != dst) && ast_opt_transcode_via_slin && 03137 (ast_translate_path_steps(dst, src) != 1)) 03138 dst = AST_FORMAT_SLINEAR; 03139 if (ast_set_read_format(chan, dst) < 0) { 03140 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03141 return -1; 03142 } 03143 if (ast_set_write_format(peer, dst) < 0) { 03144 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03145 return -1; 03146 } 03147 03148 /* Set up translation from the peer to the chan */ 03149 src = peer->nativeformats; 03150 dst = chan->nativeformats; 03151 if (ast_translator_best_choice(&dst, &src) < 0) { 03152 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03153 return -1; 03154 } 03155 03156 /* if the best path is not 'pass through', then 03157 transcoding is needed; if desired, force transcode path 03158 to use SLINEAR between channels, but only if there is 03159 no direct conversion available */ 03160 if ((src != dst) && ast_opt_transcode_via_slin && 03161 (ast_translate_path_steps(dst, src) != 1)) 03162 dst = AST_FORMAT_SLINEAR; 03163 if (ast_set_read_format(peer, dst) < 0) { 03164 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03165 return -1; 03166 } 03167 if (ast_set_write_format(chan, dst) < 0) { 03168 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03169 return -1; 03170 } 03171 return 0; 03172 }
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 3174 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, option_debug, and ast_channel::tech.
Referenced by ast_async_goto(), ast_masq_park_call(), ast_pickup_call(), attempt_transfer(), builtin_atxfer(), check_availability(), check_bridge(), check_goto_on_transfer(), do_bridge_masquerade(), handle_invite_replaces(), iax_park(), misdn_transfer_bc(), pickup_channel(), pickup_do(), sip_park(), and steal_channel().
03175 { 03176 int res = -1; 03177 struct ast_channel *final_orig, *final_clone, *base; 03178 03179 retrymasq: 03180 final_orig = original; 03181 final_clone = clone; 03182 03183 ast_channel_lock(original); 03184 while (ast_channel_trylock(clone)) { 03185 ast_channel_unlock(original); 03186 usleep(1); 03187 ast_channel_lock(original); 03188 } 03189 03190 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03191 and if so, we don't really want to masquerade it, but its proxy */ 03192 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03193 final_orig = original->_bridge; 03194 03195 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03196 final_clone = clone->_bridge; 03197 03198 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03199 final_clone = base; 03200 } 03201 03202 if ((final_orig != original) || (final_clone != clone)) { 03203 /* Lots and lots of deadlock avoidance. The main one we're competing with 03204 * is ast_write(), which locks channels recursively, when working with a 03205 * proxy channel. */ 03206 if (ast_channel_trylock(final_orig)) { 03207 ast_channel_unlock(clone); 03208 ast_channel_unlock(original); 03209 goto retrymasq; 03210 } 03211 if (ast_channel_trylock(final_clone)) { 03212 ast_channel_unlock(final_orig); 03213 ast_channel_unlock(clone); 03214 ast_channel_unlock(original); 03215 goto retrymasq; 03216 } 03217 ast_channel_unlock(clone); 03218 ast_channel_unlock(original); 03219 original = final_orig; 03220 clone = final_clone; 03221 } 03222 03223 if (original == clone) { 03224 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03225 ast_channel_unlock(clone); 03226 ast_channel_unlock(original); 03227 return -1; 03228 } 03229 03230 if (option_debug) 03231 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03232 clone->name, original->name); 03233 if (original->masq) { 03234 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03235 original->masq->name, original->name); 03236 } else if (clone->masqr) { 03237 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03238 clone->name, clone->masqr->name); 03239 } else { 03240 original->masq = clone; 03241 clone->masqr = original; 03242 ast_queue_frame(original, &ast_null_frame); 03243 ast_queue_frame(clone, &ast_null_frame); 03244 if (option_debug) 03245 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03246 res = 0; 03247 } 03248 03249 ast_channel_unlock(clone); 03250 ast_channel_unlock(original); 03251 03252 return res; 03253 }
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 2800 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().
02801 { 02802 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 02803 { 02804 case 0: 02805 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 02806 case AST_CONTROL_HANGUP: 02807 return "Hangup"; 02808 case AST_CONTROL_RING: 02809 return "Local Ring"; 02810 case AST_CONTROL_RINGING: 02811 return "Remote end Ringing"; 02812 case AST_CONTROL_ANSWER: 02813 return "Remote end has Answered"; 02814 case AST_CONTROL_BUSY: 02815 return "Remote end is Busy"; 02816 case AST_CONTROL_CONGESTION: 02817 return "Congestion (circuits busy)"; 02818 default: 02819 return "Unknown Reason!!"; 02820 } 02821 }
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 496 of file channel.c.
References ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_verbose(), channels, 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().
00497 { 00498 struct chanlist *chan; 00499 00500 AST_LIST_LOCK(&channels); 00501 00502 AST_LIST_TRAVERSE(&backends, chan, list) { 00503 if (!strcasecmp(tech->type, chan->tech->type)) { 00504 ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type); 00505 AST_LIST_UNLOCK(&channels); 00506 return -1; 00507 } 00508 } 00509 00510 if (!(chan = ast_calloc(1, sizeof(*chan)))) { 00511 AST_LIST_UNLOCK(&channels); 00512 return -1; 00513 } 00514 chan->tech = tech; 00515 AST_LIST_INSERT_HEAD(&backends, chan, list); 00516 00517 if (option_debug) 00518 ast_log(LOG_DEBUG, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description); 00519 00520 if (option_verbose > 1) 00521 ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type, 00522 chan->tech->description); 00523 00524 AST_LIST_UNLOCK(&channels); 00525 return 0; 00526 }
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 3102 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().
03103 { 03104 if (chan->tech->send_html) 03105 return chan->tech->send_html(chan, subclass, data, datalen); 03106 return -1; 03107 }
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 3109 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec(), and try_calling().
03110 { 03111 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03112 }
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 4120 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(), func_channel_write(), handle_tddmode(), play_record_review(), reset_volumes(), rpt(), set_listen_volume(), set_talk_volume(), try_calling(), vm_forwardoptions(), and zt_hangup().
04121 { 04122 int res; 04123 04124 if (chan->tech->setoption) { 04125 res = chan->tech->setoption(chan, option, data, datalen); 04126 if (res < 0) 04127 return res; 04128 } else { 04129 errno = ENOSYS; 04130 return -1; 04131 } 04132 if (block) { 04133 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04134 intermediate packets. XXX */ 04135 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04136 return -1; 04137 } 04138 return 0; 04139 }
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 466 of file channel.c.
References ast_null_frame, ast_queue_frame(), and ast_channel::whentohangup.
Referenced by action_timeout(), and timeout_write().
00467 { 00468 chan->whentohangup = offset ? time(NULL) + offset : 0; 00469 ast_queue_frame(chan, &ast_null_frame); 00470 return; 00471 }
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 4448 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_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().
04449 { 04450 struct ast_silence_generator *state; 04451 04452 if (!(state = ast_calloc(1, sizeof(*state)))) { 04453 return NULL; 04454 } 04455 04456 state->old_write_format = chan->writeformat; 04457 04458 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 04459 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 04460 free(state); 04461 return NULL; 04462 } 04463 04464 ast_activate_generator(chan, &silence_generator, state); 04465 04466 if (option_debug) 04467 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 04468 04469 return state; 04470 }
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 4472 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_silence_generator::old_write_format, and option_debug.
Referenced by __ast_play_and_record(), ast_dtmf_stream(), and channel_spy().
04473 { 04474 if (!state) 04475 return; 04476 04477 ast_deactivate_generator(chan); 04478 04479 if (option_debug) 04480 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 04481 04482 if (ast_set_write_format(chan, state->old_write_format) < 0) 04483 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 04484 04485 free(state); 04486 }
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 3097 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by sendurl_exec(), and try_calling().
void ast_channel_undefer_dtmf | ( | struct ast_channel * | chan | ) |
Unset defer DTMF flag on channel.
Undo defer. ast_read will return any dtmf characters that were queued
Definition at line 986 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
00987 { 00988 if (chan) 00989 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 00990 }
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 528 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(), channels, free, LOG_DEBUG, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by __unload_module(), and unload_module().
00529 { 00530 struct chanlist *chan; 00531 00532 if (option_debug) 00533 ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type); 00534 00535 AST_LIST_LOCK(&channels); 00536 00537 AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) { 00538 if (chan->tech == tech) { 00539 AST_LIST_REMOVE_CURRENT(&backends, list); 00540 free(chan); 00541 if (option_verbose > 1) 00542 ast_verbose(VERBOSE_PREFIX_2 "Unregistered channel type '%s'\n", tech->type); 00543 break; 00544 } 00545 } 00546 AST_LIST_TRAVERSE_SAFE_END 00547 00548 AST_LIST_UNLOCK(&channels); 00549 }
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 1099 of file channel.c.
References channel_find_locked().
Referenced by action_status(), ast_complete_channels(), ast_pickup_call(), complete_ch_helper(), conf_exec(), find_matching_channel(), 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().
01100 { 01101 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01102 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4372 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04373 { 04374 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04375 }
struct ast_variable* ast_channeltype_list | ( | void | ) |
return an ast_variable list of channeltypes
Definition at line 162 of file channel.c.
References AST_LIST_TRAVERSE, ast_variable_new(), ast_channel_tech::description, chanlist::tech, ast_channel_tech::type, and var.
00163 { 00164 struct chanlist *cl; 00165 struct ast_variable *var=NULL, *prev = NULL; 00166 AST_LIST_TRAVERSE(&backends, cl, list) { 00167 if (prev) { 00168 if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description))) 00169 prev = prev->next; 00170 } else { 00171 var = ast_variable_new(cl->tech->type, cl->tech->description); 00172 prev = var; 00173 } 00174 } 00175 return var; 00176 }
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 384 of file channel.c.
References ast_channel::_softhangup, AST_SOFTHANGUP_TIMEOUT, ast_channel::tech_pvt, and ast_channel::whentohangup.
Referenced by __ast_read(), action_redirect(), app_exec(), ast_answer(), ast_bridge_call(), ast_bridge_call_thread(), 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_exec(), bridge_native_loop(), builtin_atxfer(), channel_spy(), common_exec(), conf_run(), deadagi_exec(), handle_sendimage(), pbx_exec(), rpt(), wait_for_answer(), zt_sendtext(), and zt_setoption().
00385 { 00386 if (chan->_softhangup) /* yes if soft hangup flag set */ 00387 return 1; 00388 if (!chan->tech_pvt) /* yes if no technology private data */ 00389 return 1; 00390 if (!chan->whentohangup) /* no if no hangup scheduled */ 00391 return 0; 00392 if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */ 00393 return 0; 00394 chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */ 00395 return 1; 00396 }
static int ast_check_hangup_locked | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 398 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_check_hangup().
Referenced by ast_channel_bridge().
00399 { 00400 int res; 00401 ast_channel_lock(chan); 00402 res = ast_check_hangup(chan); 00403 ast_channel_unlock(chan); 00404 return res; 00405 }
void ast_deactivate_generator | ( | struct ast_channel * | chan | ) |
Deactive an active generator
Definition at line 1541 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(), channel_spy(), generator_force(), local_ast_moh_stop(), milliwatt_exec(), and wait_for_answer().
01542 { 01543 ast_channel_lock(chan); 01544 if (chan->generatordata) { 01545 if (chan->generator && chan->generator->release) 01546 chan->generator->release(chan, chan->generatordata); 01547 chan->generatordata = NULL; 01548 chan->generator = NULL; 01549 chan->fds[AST_GENERATOR_FD] = -1; 01550 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01551 ast_settimeout(chan, 0, NULL, NULL); 01552 } 01553 ast_channel_unlock(chan); 01554 }
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 3335 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_flags, AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, AST_FLAG_ZOMBIE, AST_GENERATOR_FD, ast_indicate(), AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_HEAD_NOLOCK, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_INSERT_TAIL, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_log(), AST_MAX_FDS, ast_null_frame, ast_queue_frame(), ast_set_flag, ast_set_read_format(), ast_set_write_format(), AST_SOFTHANGUP_DEV, ast_string_field_set, ast_test_flag, AST_TIMING_FD, ast_channel::blocker, ast_channel::cdr, ast_datastore_info::chan_fixup, ast_channel::cid, clone_variables(), ast_datastore::data, ast_channel::fdno, ast_channel::fds, ast_channel_tech::fixup, free_translation(), ast_channel_tech::hangup, ast_datastore::info, language, ast_channel::lock, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::monitor, musicclass, name, ast_channel::nativeformats, option_debug, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readformat, t, ast_channel::tech, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel_tech::type, ast_channel::visible_indication, and ast_channel::writeformat.
Referenced by __ast_read(), ast_async_goto(), ast_hangup(), ast_waitfor_nandfds(), ast_write(), do_bridge_masquerade(), iax_park(), sip_park(), and sip_park_thread().
03336 { 03337 int x,i; 03338 int res=0; 03339 int origstate; 03340 struct ast_frame *cur; 03341 const struct ast_channel_tech *t; 03342 void *t_pvt; 03343 struct ast_callerid tmpcid; 03344 struct ast_channel *clone = original->masq; 03345 struct ast_cdr *cdr; 03346 int rformat = original->readformat; 03347 int wformat = original->writeformat; 03348 char newn[100]; 03349 char orig[100]; 03350 char masqn[100]; 03351 char zombn[100]; 03352 03353 if (option_debug > 3) 03354 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03355 clone->name, clone->_state, original->name, original->_state); 03356 03357 /* XXX This is a seriously wacked out operation. We're essentially putting the guts of 03358 the clone channel into the original channel. Start by killing off the original 03359 channel's backend. I'm not sure we're going to keep this function, because 03360 while the features are nice, the cost is very high in terms of pure nastiness. XXX */ 03361 03362 /* We need the clone's lock, too */ 03363 ast_channel_lock(clone); 03364 03365 if (option_debug > 1) 03366 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03367 03368 /* Having remembered the original read/write formats, we turn off any translation on either 03369 one */ 03370 free_translation(clone); 03371 free_translation(original); 03372 03373 03374 /* Unlink the masquerade */ 03375 original->masq = NULL; 03376 clone->masqr = NULL; 03377 03378 /* Save the original name */ 03379 ast_copy_string(orig, original->name, sizeof(orig)); 03380 /* Save the new name */ 03381 ast_copy_string(newn, clone->name, sizeof(newn)); 03382 /* Create the masq name */ 03383 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03384 03385 /* Copy the name from the clone channel */ 03386 ast_string_field_set(original, name, newn); 03387 03388 /* Mangle the name of the clone channel */ 03389 ast_string_field_set(clone, name, masqn); 03390 03391 /* Notify any managers of the change, first the masq then the other */ 03392 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 03393 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03394 03395 /* Swap the technologies */ 03396 t = original->tech; 03397 original->tech = clone->tech; 03398 clone->tech = t; 03399 03400 /* Swap the cdrs */ 03401 cdr = original->cdr; 03402 original->cdr = clone->cdr; 03403 clone->cdr = cdr; 03404 03405 t_pvt = original->tech_pvt; 03406 original->tech_pvt = clone->tech_pvt; 03407 clone->tech_pvt = t_pvt; 03408 03409 /* Swap the alertpipes */ 03410 for (i = 0; i < 2; i++) { 03411 x = original->alertpipe[i]; 03412 original->alertpipe[i] = clone->alertpipe[i]; 03413 clone->alertpipe[i] = x; 03414 } 03415 03416 /* 03417 * Swap the readq's. The end result should be this: 03418 * 03419 * 1) All frames should be on the new (original) channel. 03420 * 2) Any frames that were already on the new channel before this 03421 * masquerade need to be at the end of the readq, after all of the 03422 * frames on the old (clone) channel. 03423 * 3) The alertpipe needs to get poked for every frame that was already 03424 * on the new channel, since we are now using the alert pipe from the 03425 * old (clone) channel. 03426 */ 03427 { 03428 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 03429 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 03430 03431 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 03432 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 03433 03434 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 03435 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 03436 if (original->alertpipe[1] > -1) { 03437 int poke = 0; 03438 write(original->alertpipe[1], &poke, sizeof(poke)); 03439 } 03440 } 03441 } 03442 03443 /* Swap the raw formats */ 03444 x = original->rawreadformat; 03445 original->rawreadformat = clone->rawreadformat; 03446 clone->rawreadformat = x; 03447 x = original->rawwriteformat; 03448 original->rawwriteformat = clone->rawwriteformat; 03449 clone->rawwriteformat = x; 03450 03451 clone->_softhangup = AST_SOFTHANGUP_DEV; 03452 03453 /* And of course, so does our current state. Note we need not 03454 call ast_setstate since the event manager doesn't really consider 03455 these separate. We do this early so that the clone has the proper 03456 state of the original channel. */ 03457 origstate = original->_state; 03458 original->_state = clone->_state; 03459 clone->_state = origstate; 03460 03461 if (clone->tech->fixup){ 03462 res = clone->tech->fixup(original, clone); 03463 if (res) 03464 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03465 } 03466 03467 /* Start by disconnecting the original's physical side */ 03468 if (clone->tech->hangup) 03469 res = clone->tech->hangup(clone); 03470 if (res) { 03471 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03472 ast_channel_unlock(clone); 03473 return -1; 03474 } 03475 03476 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03477 /* Mangle the name of the clone channel */ 03478 ast_string_field_set(clone, name, zombn); 03479 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03480 03481 /* Update the type. */ 03482 t_pvt = original->monitor; 03483 original->monitor = clone->monitor; 03484 clone->monitor = t_pvt; 03485 03486 /* Keep the same language. */ 03487 ast_string_field_set(original, language, clone->language); 03488 /* Copy the FD's other than the generator fd */ 03489 for (x = 0; x < AST_MAX_FDS; x++) { 03490 if (x != AST_GENERATOR_FD) 03491 original->fds[x] = clone->fds[x]; 03492 } 03493 03494 ast_app_group_update(clone, original); 03495 /* Move data stores over */ 03496 if (AST_LIST_FIRST(&clone->datastores)) { 03497 struct ast_datastore *ds; 03498 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 03499 AST_LIST_TRAVERSE(&original->datastores, ds, entry) { 03500 if (ds->info->chan_fixup) 03501 ds->info->chan_fixup(ds->data, clone, original); 03502 } 03503 } 03504 03505 clone_variables(original, clone); 03506 /* Presense of ADSI capable CPE follows clone */ 03507 original->adsicpe = clone->adsicpe; 03508 /* Bridge remains the same */ 03509 /* CDR fields remain the same */ 03510 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 03511 /* Application and data remain the same */ 03512 /* Clone exception becomes real one, as with fdno */ 03513 ast_copy_flags(original, clone, AST_FLAG_EXCEPTION); 03514 original->fdno = clone->fdno; 03515 /* Schedule context remains the same */ 03516 /* Stream stuff stays the same */ 03517 /* Keep the original state. The fixup code will need to work with it most likely */ 03518 03519 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 03520 out. */ 03521 tmpcid = original->cid; 03522 original->cid = clone->cid; 03523 clone->cid = tmpcid; 03524 03525 /* Restore original timing file descriptor */ 03526 original->fds[AST_TIMING_FD] = original->timingfd; 03527 03528 /* Our native formats are different now */ 03529 original->nativeformats = clone->nativeformats; 03530 03531 /* Context, extension, priority, app data, jump table, remain the same */ 03532 /* pvt switches. pbx stays the same, as does next */ 03533 03534 /* Set the write format */ 03535 ast_set_write_format(original, wformat); 03536 03537 /* Set the read format */ 03538 ast_set_read_format(original, rformat); 03539 03540 /* Copy the music class */ 03541 ast_string_field_set(original, musicclass, clone->musicclass); 03542 03543 if (option_debug) 03544 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 03545 03546 /* Okay. Last thing is to let the channel driver know about all this mess, so he 03547 can fix up everything as best as possible */ 03548 if (original->tech->fixup) { 03549 res = original->tech->fixup(clone, original); 03550 if (res) { 03551 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 03552 original->tech->type, original->name); 03553 ast_channel_unlock(clone); 03554 return -1; 03555 } 03556 } else 03557 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 03558 original->tech->type, original->name); 03559 03560 /* If an indication is currently playing maintain it on the channel that is taking the place of original */ 03561 if (original->visible_indication) 03562 ast_indicate(original, original->visible_indication); 03563 03564 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 03565 a zombie so nothing tries to touch it. If it's already been marked as a 03566 zombie, then free it now (since it already is considered invalid). */ 03567 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 03568 if (option_debug) 03569 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 03570 ast_channel_unlock(clone); 03571 manager_event(EVENT_FLAG_CALL, "Hangup", 03572 "Channel: %s\r\n" 03573 "Uniqueid: %s\r\n" 03574 "Cause: %d\r\n" 03575 "Cause-txt: %s\r\n", 03576 clone->name, 03577 clone->uniqueid, 03578 clone->hangupcause, 03579 ast_cause2str(clone->hangupcause) 03580 ); 03581 ast_channel_free(clone); 03582 } else { 03583 if (option_debug) 03584 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 03585 ast_set_flag(clone, AST_FLAG_ZOMBIE); 03586 ast_queue_frame(clone, &ast_null_frame); 03587 ast_channel_unlock(clone); 03588 } 03589 03590 /* Signal any blocker */ 03591 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 03592 pthread_kill(original->blocker, SIGURG); 03593 if (option_debug) 03594 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 03595 return 0; 03596 }
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 3705 of file channel.c.
References AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_RETRY, ast_jb_do_usecheck(), config, f, ast_channel::nativeformats, and ast_channel::tech_pvt.
Referenced by ast_channel_bridge().
03708 { 03709 /* Copy voice back and forth between the two channels. */ 03710 struct ast_channel *cs[3]; 03711 struct ast_frame *f; 03712 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03713 int o0nativeformats; 03714 int o1nativeformats; 03715 int watch_c0_dtmf; 03716 int watch_c1_dtmf; 03717 void *pvt0, *pvt1; 03718 /* Indicates whether a frame was queued into a jitterbuffer */ 03719 int frame_put_in_jb = 0; 03720 int jb_in_use; 03721 int to; 03722 03723 cs[0] = c0; 03724 cs[1] = c1; 03725 pvt0 = c0->tech_pvt; 03726 pvt1 = c1->tech_pvt; 03727 o0nativeformats = c0->nativeformats; 03728 o1nativeformats = c1->nativeformats; 03729 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 03730 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 03731 03732 /* Check the need of a jitterbuffer for each channel */ 03733 jb_in_use = ast_jb_do_usecheck(c0, c1); 03734 03735 for (;;) { 03736 struct ast_channel *who, *other; 03737 03738 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 03739 (o0nativeformats != c0->nativeformats) || 03740 (o1nativeformats != c1->nativeformats)) { 03741 /* Check for Masquerade, codec changes, etc */ 03742 res = AST_BRIDGE_RETRY; 03743 break; 03744 } 03745 if (bridge_end.tv_sec) { 03746 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 03747 if (to <= 0) { 03748 if (config->timelimit) 03749 res = AST_BRIDGE_RETRY; 03750 else 03751 res = AST_BRIDGE_COMPLETE; 03752 break; 03753 } 03754 } else 03755 to = -1; 03756 /* Calculate the appropriate max sleep interval - in general, this is the time, 03757 left to the closest jb delivery moment */ 03758 if (jb_in_use) 03759 to = ast_jb_get_when_to_wakeup(c0, c1, to); 03760 who = ast_waitfor_n(cs, 2, &to); 03761 if (!who) { 03762 /* No frame received within the specified timeout - check if we have to deliver now */ 03763 if (jb_in_use) 03764 ast_jb_get_and_deliver(c0, c1); 03765 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 03766 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03767 c0->_softhangup = 0; 03768 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03769 c1->_softhangup = 0; 03770 c0->_bridge = c1; 03771 c1->_bridge = c0; 03772 } 03773 continue; 03774 } 03775 f = ast_read(who); 03776 if (!f) { 03777 *fo = NULL; 03778 *rc = who; 03779 if (option_debug) 03780 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 03781 break; 03782 } 03783 03784 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 03785 /* Try add the frame info the who's bridged channel jitterbuff */ 03786 if (jb_in_use) 03787 frame_put_in_jb = !ast_jb_put(other, f); 03788 03789 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 03790 int bridge_exit = 0; 03791 03792 switch (f->subclass) { 03793 case AST_CONTROL_HOLD: 03794 case AST_CONTROL_UNHOLD: 03795 case AST_CONTROL_VIDUPDATE: 03796 case AST_CONTROL_SRCUPDATE: 03797 ast_indicate_data(other, f->subclass, f->data, f->datalen); 03798 break; 03799 default: 03800 *fo = f; 03801 *rc = who; 03802 bridge_exit = 1; 03803 if (option_debug) 03804 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 03805 break; 03806 } 03807 if (bridge_exit) 03808 break; 03809 } 03810 if ((f->frametype == AST_FRAME_VOICE) || 03811 (f->frametype == AST_FRAME_DTMF_BEGIN) || 03812 (f->frametype == AST_FRAME_DTMF) || 03813 (f->frametype == AST_FRAME_VIDEO) || 03814 (f->frametype == AST_FRAME_IMAGE) || 03815 (f->frametype == AST_FRAME_HTML) || 03816 (f->frametype == AST_FRAME_MODEM) || 03817 (f->frametype == AST_FRAME_TEXT)) { 03818 /* monitored dtmf causes exit from bridge */ 03819 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 03820 03821 if (monitored_source && 03822 (f->frametype == AST_FRAME_DTMF_END || 03823 f->frametype == AST_FRAME_DTMF_BEGIN)) { 03824 *fo = f; 03825 *rc = who; 03826 if (option_debug) 03827 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 03828 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 03829 who->name); 03830 break; 03831 } 03832 /* Write immediately frames, not passed through jb */ 03833 if (!frame_put_in_jb) 03834 ast_write(other, f); 03835 03836 /* Check if we have to deliver now */ 03837 if (jb_in_use) 03838 ast_jb_get_and_deliver(c0, c1); 03839 } 03840 /* XXX do we want to pass on also frames not matched above ? */ 03841 ast_frfree(f); 03842 03843 /* Swap who gets priority */ 03844 cs[2] = cs[0]; 03845 cs[0] = cs[1]; 03846 cs[1] = cs[2]; 03847 } 03848 return res; 03849 }
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 1124 of file channel.c.
References channel_find_locked().
01125 { 01126 return channel_find_locked(NULL, NULL, 0, context, exten); 01127 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1105 of file channel.c.
References channel_find_locked().
Referenced by action_getvar(), action_hangup(), action_redirect(), action_setcdruserfield(), action_setvar(), action_status(), action_timeout(), ast_async_goto_by_name(), 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(), pbx_builtin_importvar(), start_monitor_action(), and stop_monitor_action().
01106 { 01107 return channel_find_locked(NULL, name, 0, NULL, NULL); 01108 }
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 1111 of file channel.c.
References channel_find_locked().
Referenced by action_bridge(), ast_parse_device_state(), bridge_exec(), common_exec(), and mixmonitor_cli().
01112 { 01113 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01114 }
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 551 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), channels, LOG_WARNING, chanlist::tech, and ast_channel_tech::type.
Referenced by ast_device_state().
00552 { 00553 struct chanlist *chanls; 00554 const struct ast_channel_tech *ret = NULL; 00555 00556 if (AST_LIST_LOCK(&channels)) { 00557 ast_log(LOG_WARNING, "Unable to lock channel tech list\n"); 00558 return NULL; 00559 } 00560 00561 AST_LIST_TRAVERSE(&backends, chanls, list) { 00562 if (!strcasecmp(name, chanls->tech->type)) { 00563 ret = chanls->tech; 00564 break; 00565 } 00566 } 00567 00568 AST_LIST_UNLOCK(&channels); 00569 00570 return ret; 00571 }
ast_group_t ast_get_group | ( | const char * | s | ) |
Definition at line 4293 of file channel.c.
References ast_log(), ast_strdupa, ast_strlen_zero(), group, LOG_ERROR, and strsep().
Referenced by _parse(), build_device(), build_gateway(), build_peer(), build_user(), func_channel_write(), process_zap(), and read_agent_config().
04294 { 04295 char *piece; 04296 char *c; 04297 int start=0, finish=0, x; 04298 ast_group_t group = 0; 04299 04300 if (ast_strlen_zero(s)) 04301 return 0; 04302 04303 c = ast_strdupa(s); 04304 04305 while ((piece = strsep(&c, ","))) { 04306 if (sscanf(piece, "%d-%d", &start, &finish) == 2) { 04307 /* Range */ 04308 } else if (sscanf(piece, "%d", &start)) { 04309 /* Just one */ 04310 finish = start; 04311 } else { 04312 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04313 continue; 04314 } 04315 for (x = start; x <= finish; x++) { 04316 if ((x > 63) || (x < 0)) { 04317 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04318 } else 04319 group |= ((ast_group_t) 1 << x); 04320 } 04321 } 04322 return group; 04323 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1415 of file channel.c.
References ast_audiohook_detach_list(), ast_autoservice_stop(), ast_cause2str(), ast_cdr_detach(), ast_cdr_end(), ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_closestream(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_ZOMBIE, ast_log(), ast_set_flag, ast_test_flag, ast_channel::audiohooks, ast_channel::blocker, ast_channel::blockproc, ast_channel::cdr, CRASH, free_translation(), ast_channel::generator, ast_channel::generatordata, ast_channel_tech::hangup, ast_channel::hangupcause, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, option_debug, ast_generator::release, ast_channel::sched, sched_context_destroy(), ast_channel::stream, ast_channel::tech, and ast_channel::vstream.
Referenced by __ast_request_and_dial(), __oh323_new(), action_bridge(), agent_hangup(), agent_read(), alsa_new(), answer_exec_run(), app_exec(), ast_async_goto(), ast_bridge_call_thread(), ast_dial_destroy(), ast_dial_hangup(), ast_feature_request_and_dial(), ast_iax2_new(), ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_pbx_run_app(), async_wait(), begin_dial(), bridge_exec(), build_conf(), builtin_atxfer(), chanavail_exec(), check_compat(), check_goto_on_transfer(), clear_caller(), conf_free(), conf_run(), connect_link(), do_hang(), 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(), mgcp_new(), mgcp_ss(), monitor_dial(), nbs_new(), oss_new(), park_exec(), parkandannounce_exec(), phone_new(), rpt(), rpt_call(), rpt_tele_thread(), sip_new(), sip_park(), sip_park_thread(), skinny_new(), skinny_ss(), ss_thread(), try_calling(), wait_for_answer(), wait_for_winner(), zt_handle_event(), and zt_new().
01416 { 01417 int res = 0; 01418 struct ast_cdr *cdr = NULL; 01419 01420 /* Don't actually hang up a channel that will masquerade as someone else, or 01421 if someone is going to masquerade as us */ 01422 ast_channel_lock(chan); 01423 01424 if (chan->audiohooks) { 01425 ast_audiohook_detach_list(chan->audiohooks); 01426 chan->audiohooks = NULL; 01427 } 01428 01429 ast_autoservice_stop(chan); 01430 01431 if (chan->masq) { 01432 if (ast_do_masquerade(chan)) 01433 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01434 } 01435 01436 if (chan->masq) { 01437 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01438 ast_channel_unlock(chan); 01439 return 0; 01440 } 01441 /* If this channel is one which will be masqueraded into something, 01442 mark it as a zombie already, so we know to free it later */ 01443 if (chan->masqr) { 01444 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01445 ast_channel_unlock(chan); 01446 return 0; 01447 } 01448 free_translation(chan); 01449 /* Close audio stream */ 01450 if (chan->stream) { 01451 ast_closestream(chan->stream); 01452 chan->stream = NULL; 01453 } 01454 /* Close video stream */ 01455 if (chan->vstream) { 01456 ast_closestream(chan->vstream); 01457 chan->vstream = NULL; 01458 } 01459 if (chan->sched) { 01460 sched_context_destroy(chan->sched); 01461 chan->sched = NULL; 01462 } 01463 01464 if (chan->generatordata) /* Clear any tone stuff remaining */ 01465 chan->generator->release(chan, chan->generatordata); 01466 chan->generatordata = NULL; 01467 chan->generator = NULL; 01468 if (chan->cdr) { /* End the CDR if it hasn't already */ 01469 ast_cdr_end(chan->cdr); 01470 cdr = chan->cdr; 01471 chan->cdr = NULL; 01472 } 01473 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01474 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01475 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01476 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01477 CRASH; 01478 } 01479 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01480 if (option_debug) 01481 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01482 if (chan->tech->hangup) 01483 res = chan->tech->hangup(chan); 01484 } else { 01485 if (option_debug) 01486 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01487 } 01488 01489 ast_channel_unlock(chan); 01490 manager_event(EVENT_FLAG_CALL, "Hangup", 01491 "Channel: %s\r\n" 01492 "Uniqueid: %s\r\n" 01493 "Cause: %d\r\n" 01494 "Cause-txt: %s\r\n", 01495 chan->name, 01496 chan->uniqueid, 01497 chan->hangupcause, 01498 ast_cause2str(chan->hangupcause) 01499 ); 01500 ast_channel_free(chan); 01501 01502 if (cdr) 01503 ast_cdr_detach(cdr); 01504 01505 return res; 01506 }
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 2331 of file channel.c.
References ast_indicate_data().
Referenced by __ast_play_and_record(), agent_new(), ast_bridge_call(), ast_channel_bridge(), ast_do_masquerade(), ast_dtmf_stream(), ast_feature_request_and_dial(), attempt_transfer(), builtin_atxfer(), builtin_blindtransfer(), conf_run(), disa_exec(), 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().
02332 { 02333 return ast_indicate_data(chan, condition, NULL, 0); 02334 }
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 2336 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FLAG_ZOMBIE, ast_get_indication_tone(), ast_log(), ast_playtones_start(), ast_playtones_stop(), ast_test_flag, tone_zone_sound::data, ast_channel_tech::indicate, LOG_DEBUG, 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().
02337 { 02338 int res = -1; 02339 02340 ast_channel_lock(chan); 02341 /* Stop if we're a zombie or need a soft hangup */ 02342 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02343 ast_channel_unlock(chan); 02344 return -1; 02345 } 02346 if (chan->tech->indicate) 02347 res = chan->tech->indicate(chan, condition, data, datalen); 02348 ast_channel_unlock(chan); 02349 if (!chan->tech->indicate || res) { 02350 /* 02351 * Device does not support (that) indication, lets fake 02352 * it by doing our own tone generation. (PM2002) 02353 */ 02354 if (condition < 0) 02355 ast_playtones_stop(chan); 02356 else { 02357 const struct tone_zone_sound *ts = NULL; 02358 switch (condition) { 02359 case AST_CONTROL_RINGING: 02360 ts = ast_get_indication_tone(chan->zone, "ring"); 02361 break; 02362 case AST_CONTROL_BUSY: 02363 ts = ast_get_indication_tone(chan->zone, "busy"); 02364 break; 02365 case AST_CONTROL_CONGESTION: 02366 ts = ast_get_indication_tone(chan->zone, "congestion"); 02367 break; 02368 } 02369 if (ts && ts->data[0]) { 02370 if (option_debug) 02371 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02372 ast_playtones_start(chan,0,ts->data, 1); 02373 res = 0; 02374 chan->visible_indication = condition; 02375 } else if (condition == AST_CONTROL_PROGRESS) { 02376 /* ast_playtones_stop(chan); */ 02377 } else if (condition == AST_CONTROL_PROCEEDING) { 02378 /* Do nothing, really */ 02379 } else if (condition == AST_CONTROL_HOLD) { 02380 /* Do nothing.... */ 02381 } else if (condition == AST_CONTROL_UNHOLD) { 02382 /* Do nothing.... */ 02383 } else if (condition == AST_CONTROL_VIDUPDATE) { 02384 /* Do nothing.... */ 02385 } else if (condition == AST_CONTROL_SRCUPDATE) { 02386 /* Do nothing... */ 02387 } else { 02388 /* not handled */ 02389 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02390 res = -1; 02391 } 02392 } 02393 } else 02394 chan->visible_indication = condition; 02395 02396 return res; 02397 }
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 4329 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04332 { 04333 ast_moh_start_ptr = start_ptr; 04334 ast_moh_stop_ptr = stop_ptr; 04335 ast_moh_cleanup_ptr = cleanup_ptr; 04336 }
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 2313 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().
02314 { 02315 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02316 if (option_debug > 4) 02317 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); 02318 return ret; 02319 }
static AST_LIST_HEAD_NOLOCK_STATIC | ( | backends | , | |
chanlist | ||||
) | [static] |
the list of registered channel types
static AST_LIST_HEAD_STATIC | ( | channels | , | |
ast_channel | ||||
) | [static] |
the list of channels we have. Note that the lock for this list is used for both the channels list and the backends list.
void ast_moh_cleanup | ( | struct ast_channel * | chan | ) |
Definition at line 4366 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04367 { 04368 if (ast_moh_cleanup_ptr) 04369 ast_moh_cleanup_ptr(chan); 04370 }
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 4346 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(), 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(), skinny_indicate(), and zt_indicate().
04347 { 04348 if (ast_moh_start_ptr) 04349 return ast_moh_start_ptr(chan, mclass, interpclass); 04350 04351 if (option_verbose > 2) { 04352 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04353 mclass ? mclass : (interpclass ? interpclass : "default")); 04354 } 04355 04356 return 0; 04357 }
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 4360 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), ast_quiet_chan(), conf_run(), do_bridge_masquerade(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), misdn_transfer_bc(), moh0_exec(), moh1_exec(), moh4_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), skinny_indicate(), steal_channel(), try_calling(), and zt_indicate().
04361 { 04362 if (ast_moh_stop_ptr) 04363 ast_moh_stop_ptr(chan); 04364 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 4378 of file channel.c.
Referenced by _sip_show_peer(), func_channel_read(), misdn_cfg_get_config_string(), print_group(), read_config(), and serialize_showchan().
04379 { 04380 unsigned int i; 04381 int first=1; 04382 char num[3]; 04383 04384 buf[0] = '\0'; 04385 04386 if (!group) /* Return empty string if no group */ 04387 return buf; 04388 04389 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04390 if (group & ((ast_group_t) 1 << i)) { 04391 if (!first) { 04392 strncat(buf, ", ", buflen - strlen(buf) - 1); 04393 } else { 04394 first=0; 04395 } 04396 snprintf(num, sizeof(num), "%u", i); 04397 strncat(buf, num, buflen - strlen(buf) - 1); 04398 } 04399 } 04400 return buf; 04401 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2519 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, option_debug, ast_channel::rawwriteformat, ast_frame::src, and ast_frame::subclass.
Referenced by ast_activate_generator().
02520 { 02521 struct ast_frame a = { AST_FRAME_VOICE }; 02522 char nothing[128]; 02523 02524 /* Send an empty audio frame to get things moving */ 02525 if (chan->_state != AST_STATE_UP) { 02526 if (option_debug) 02527 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02528 a.subclass = chan->rawwriteformat; 02529 a.data = nothing + AST_FRIENDLY_OFFSET; 02530 a.src = "ast_prod"; 02531 if (ast_write(chan, &a)) 02532 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02533 } 02534 return 0; 02535 }
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 951 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by __oh323_update_info(), __zt_exception(), ast_pickup_call(), attempt_transfer(), auto_congest(), gtalk_is_answered(), gtalk_ringing_ack(), handle_hd_hf(), handle_offhook_message(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_refer(), handle_response(), handle_response_invite(), handle_response_refer(), handle_soft_key_event_message(), handle_stimulus_message(), mgcp_call(), nbs_call(), phone_call(), pickup_do(), process_sdp(), receive_digit(), send_cause2ast(), setup_rtp_connection(), skinny_call(), skinny_unhold(), ss_thread(), update_state(), zt_handle_event(), and zt_hangup().
00952 { 00953 struct ast_frame f = { AST_FRAME_CONTROL, }; 00954 00955 f.subclass = control; 00956 00957 return ast_queue_frame(chan, &f); 00958 }
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 961 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by iax2_queue_control_data(), process_sdp(), skinny_hold(), zt_handle_event(), and zt_hangup().
00963 { 00964 struct ast_frame f = { AST_FRAME_CONTROL, }; 00965 00966 f.subclass = control; 00967 f.data = (void *) data; 00968 f.datalen = datalen; 00969 00970 return ast_queue_frame(chan, &f); 00971 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin | |||
) |
Queue an outgoing frame.
Definition at line 883 of file channel.c.
References ast_channel::alertpipe, ast_channel_lock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FLAG_BLOCKING, AST_FRAME_CONTROL, AST_FRAME_VOICE, ast_frdup(), ast_frfree, AST_LIST_INSERT_TAIL, AST_LIST_LAST, AST_LIST_TRAVERSE, ast_log(), ast_test_flag, ast_channel::blocker, CRASH, errno, f, ast_frame::frametype, LOG_DEBUG, option_debug, ast_frame::subclass, and ast_channel::timingfd.
Referenced by __oh323_rtp_create(), __oh323_update_info(), agent_new(), alsa_call(), ast_autoservice_stop(), 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(), 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(), receive_digit(), receive_message(), rpt_call(), wakeup_sub(), and zap_queue_frame().
00884 { 00885 struct ast_frame *f; 00886 struct ast_frame *cur; 00887 int blah = 1; 00888 int qlen = 0; 00889 00890 /* Build us a copy and free the original one */ 00891 if (!(f = ast_frdup(fin))) { 00892 ast_log(LOG_WARNING, "Unable to duplicate frame\n"); 00893 return -1; 00894 } 00895 ast_channel_lock(chan); 00896 00897 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00898 if ((cur = AST_LIST_LAST(&chan->readq)) && (cur->frametype == AST_FRAME_CONTROL) && (cur->subclass == AST_CONTROL_HANGUP)) { 00899 ast_frfree(f); 00900 ast_channel_unlock(chan); 00901 return 0; 00902 } 00903 00904 /* Count how many frames exist on the queue */ 00905 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00906 qlen++; 00907 } 00908 00909 /* Allow up to 96 voice frames outstanding, and up to 128 total frames */ 00910 if (((fin->frametype == AST_FRAME_VOICE) && (qlen > 96)) || (qlen > 128)) { 00911 if (fin->frametype != AST_FRAME_VOICE) { 00912 ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name); 00913 CRASH; 00914 } else { 00915 if (option_debug) 00916 ast_log(LOG_DEBUG, "Dropping voice to exceptionally long queue on %s\n", chan->name); 00917 ast_frfree(f); 00918 ast_channel_unlock(chan); 00919 return 0; 00920 } 00921 } 00922 AST_LIST_INSERT_TAIL(&chan->readq, f, frame_list); 00923 if (chan->alertpipe[1] > -1) { 00924 if (write(chan->alertpipe[1], &blah, sizeof(blah)) != sizeof(blah)) 00925 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s, frametype/subclass %d/%d (qlen = %d): %s!\n", 00926 chan->name, f->frametype, f->subclass, qlen, strerror(errno)); 00927 #ifdef HAVE_ZAPTEL 00928 } else if (chan->timingfd > -1) { 00929 ioctl(chan->timingfd, ZT_TIMERPING, &blah); 00930 #endif 00931 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00932 pthread_kill(chan->blocker, SIGURG); 00933 } 00934 ast_channel_unlock(chan); 00935 return 0; 00936 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 939 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(), gtalk_hangup_farend(), 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(), mgcp_queue_hangup(), misdn_answer(), retrans_pkt(), and zt_handle_event().
00940 { 00941 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 00942 /* Yeah, let's not change a lock-critical value without locking */ 00943 if (!ast_channel_trylock(chan)) { 00944 chan->_softhangup |= AST_SOFTHANGUP_DEV; 00945 ast_channel_unlock(chan); 00946 } 00947 return ast_queue_frame(chan, &f); 00948 }
struct ast_frame* ast_read | ( | struct ast_channel * | chan | ) |
Reads a frame.
chan | channel to read a frame from |
Definition at line 2321 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_masq_park_call(), 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(), builtin_atxfer(), channel_spy(), check_goto_on_transfer(), conf_exec(), conf_flush(), conf_run(), dictate_exec(), disa_exec(), do_parking_thread(), do_waiting(), echo_exec(), features_read(), find_cache(), handle_invite_replaces(), handle_recordfile(), iax_park_thread(), ices_exec(), isAnsweringMachine(), measurenoise(), misdn_bridge(), monitor_dial(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), nv_background_detect_exec(), nv_detectfax_exec(), receive_dtmf_digits(), recordthread(), rpt(), run_agi(), rxfax_exec(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), txfax_exec(), wait_for_answer(), wait_for_hangup(), wait_for_winner(), waitforring_exec(), waitstream_core(), and zt_bridge().
02322 { 02323 return __ast_read(chan, 0); 02324 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 1884 of file channel.c.
References ast_deactivate_generator(), 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, and ast_channel::timingfunc.
Referenced by __ast_read().
01885 { 01886 if (chan->generatordata && !ast_internal_timing_enabled(chan)) { 01887 void *tmp = chan->generatordata; 01888 int res; 01889 01890 if (chan->timingfunc) { 01891 if (option_debug > 1) 01892 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 01893 ast_settimeout(chan, 0, NULL, NULL); 01894 } 01895 01896 chan->generatordata = NULL; /* reset, to let writes go through */ 01897 res = chan->generator->generate(chan, tmp, f->datalen, f->samples); 01898 chan->generatordata = tmp; 01899 if (res) { 01900 if (option_debug > 1) 01901 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01902 ast_deactivate_generator(chan); 01903 } 01904 01905 } else if (f->frametype == AST_FRAME_CNG) { 01906 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 01907 if (option_debug > 1) 01908 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 01909 ast_settimeout(chan, 160, generator_force, chan); 01910 } 01911 } 01912 }
struct ast_frame* ast_read_noaudio | ( | struct ast_channel * | chan | ) |
Reads a frame, returning AST_FRAME_NULL frame if audio.
chan | channel to read a frame from |
Definition at line 2326 of file channel.c.
References __ast_read().
Referenced by conf_run().
02327 { 02328 return __ast_read(chan, 1); 02329 }
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 3049 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().
03050 { 03051 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03052 }
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 3054 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().
03055 { 03056 int pos = 0; /* index in the buffer where we accumulate digits */ 03057 int to = ftimeout; 03058 03059 /* Stop if we're a zombie or need a soft hangup */ 03060 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03061 return -1; 03062 if (!len) 03063 return -1; 03064 for (;;) { 03065 int d; 03066 if (c->stream) { 03067 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03068 ast_stopstream(c); 03069 usleep(1000); 03070 if (!d) 03071 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03072 } else { 03073 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03074 } 03075 if (d < 0) 03076 return -1; 03077 if (d == 0) { 03078 s[pos]='\0'; 03079 return 1; 03080 } 03081 if (d == 1) { 03082 s[pos]='\0'; 03083 return 2; 03084 } 03085 if (!strchr(enders, d)) 03086 s[pos++] = d; 03087 if (strchr(enders, d) || (pos >= len)) { 03088 s[pos]='\0'; 03089 return 0; 03090 } 03091 to = timeout; 03092 } 03093 /* Never reached */ 03094 return 0; 03095 }
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 2399 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02400 { 02401 int c; 02402 char *buf = ast_recvtext(chan, timeout); 02403 if (buf == NULL) 02404 return -1; /* error or timeout */ 02405 c = *(unsigned char *)buf; 02406 free(buf); 02407 return c; 02408 }
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 2410 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().
02411 { 02412 int res, done = 0; 02413 char *buf = NULL; 02414 02415 while (!done) { 02416 struct ast_frame *f; 02417 if (ast_check_hangup(chan)) 02418 break; 02419 res = ast_waitfor(chan, timeout); 02420 if (res <= 0) /* timeout or error */ 02421 break; 02422 timeout = res; /* update timeout */ 02423 f = ast_read(chan); 02424 if (f == NULL) 02425 break; /* no frame */ 02426 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02427 done = 1; /* force a break */ 02428 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02429 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02430 done = 1; 02431 } 02432 ast_frfree(f); 02433 } 02434 return buf; 02435 }
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 2957 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, channels, fmt, ast_channel_tech::requester, chanlist::tech, and ast_channel_tech::type.
Referenced by __ast_request_and_dial(), agent_request(), ast_feature_request_and_dial(), ast_request_inherit(), 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().
02958 { 02959 struct chanlist *chan; 02960 struct ast_channel *c; 02961 int capabilities; 02962 int fmt; 02963 int res; 02964 int foo; 02965 int videoformat = format & AST_FORMAT_VIDEO_MASK; 02966 02967 if (!cause) 02968 cause = &foo; 02969 *cause = AST_CAUSE_NOTDEFINED; 02970 02971 if (AST_LIST_LOCK(&channels)) { 02972 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 02973 return NULL; 02974 } 02975 02976 AST_LIST_TRAVERSE(&backends, chan, list) { 02977 if (strcasecmp(type, chan->tech->type)) 02978 continue; 02979 02980 capabilities = chan->tech->capabilities; 02981 fmt = format & AST_FORMAT_AUDIO_MASK; 02982 res = ast_translator_best_choice(&fmt, &capabilities); 02983 if (res < 0) { 02984 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 02985 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 02986 AST_LIST_UNLOCK(&channels); 02987 return NULL; 02988 } 02989 AST_LIST_UNLOCK(&channels); 02990 if (!chan->tech->requester) 02991 return NULL; 02992 02993 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 02994 return NULL; 02995 02996 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 02997 return c; 02998 } 02999 03000 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03001 *cause = AST_CAUSE_NOSUCHDRIVER; 03002 AST_LIST_UNLOCK(&channels); 03003 03004 return NULL; 03005 }
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 2952 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
02953 { 02954 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 02955 }
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 1158 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(), dictate_exec(), flash_exec(), function_ilink(), mgcp_ss(), milliwatt_exec(), moh0_exec(), moh1_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(), test1_client(), test1_server(), testclient_exec(), testserver_exec(), try_calling(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01159 { 01160 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01161 }
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 1137 of file channel.c.
References ast_frfree, ast_read(), ast_waitfor(), and f.
Referenced by __login_exec(), and ast_safe_sleep().
01138 { 01139 struct ast_frame *f; 01140 01141 while (ms > 0) { 01142 if (cond && ((*cond)(data) == 0)) 01143 return 0; 01144 ms = ast_waitfor(chan, ms); 01145 if (ms < 0) 01146 return -1; 01147 if (ms > 0) { 01148 f = ast_read(chan); 01149 if (!f) 01150 return -1; 01151 ast_frfree(f); 01152 } 01153 } 01154 return 0; 01155 }
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 408 of file channel.c.
References ast_malloc, and len.
Referenced by features_new(), and zt_new().
00409 { 00410 char *b2, buf[1]; 00411 int len; 00412 va_list args; 00413 00414 va_start(args, fmt); 00415 len = vsnprintf(buf, 1, fmt, args); 00416 va_end(args); 00417 00418 if (!(b2 = ast_malloc(len + 1))) 00419 return NULL; 00420 00421 va_start(args, fmt); 00422 vsnprintf(b2, len + 1, fmt, args); 00423 va_end(args); 00424 00425 return b2; 00426 }
int ast_say_character_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4650 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().
04652 { 04653 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 04654 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4644 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().
04646 { 04647 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 04648 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4638 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
04640 { 04641 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 04642 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 4662 of file channel.c.
References ast_say_digit_str_full.
Referenced by __say_init(), ast_say_digits(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_number_full_cz(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_en(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_ge(), ast_say_number_full_he(), ast_say_number_full_it(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), and ast_say_number_full_tw().
04664 { 04665 char buf[256]; 04666 04667 snprintf(buf, sizeof(buf), "%d", num); 04668 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 04669 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4632 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().
04634 { 04635 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 04636 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4626 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_fr(), ast_say_date_ge(), ast_say_date_gr(), ast_say_date_nl(), ast_say_date_pt(), ast_say_date_with_format_da(), ast_say_date_with_format_de(), ast_say_date_with_format_en(), ast_say_date_with_format_es(), ast_say_date_with_format_fr(), ast_say_date_with_format_it(), ast_say_date_with_format_nl(), ast_say_date_with_format_pl(), ast_say_date_with_format_pt(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_ge(), ast_say_datetime_from_now_pt(), ast_say_datetime_pt(), ast_say_datetime_tw(), ast_say_time_de(), ast_say_time_en(), ast_say_time_fr(), ast_say_time_ge(), ast_say_time_gr(), ast_say_time_nl(), ast_say_time_pt(), ast_say_time_pt_BR(), ast_say_time_tw(), bridge_playfile(), conf_exec(), conf_run(), count_exec(), dictate_exec(), get_folder(), gr_say_number_female(), pbx_builtin_saynumber(), play_message(), play_message_duration(), rpt_tele_thread(), say_and_wait(), say_position(), saynum(), try_calling(), vm_intro_gr(), vm_intro_pt(), and vm_intro_pt_BR().
04628 { 04629 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 04630 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4656 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
04658 { 04659 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 04660 }
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 2509 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().
02510 { 02511 if (chan->tech->send_digit_begin) { 02512 ast_senddigit_begin(chan, digit); 02513 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02514 } 02515 02516 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02517 }
int ast_senddigit_begin | ( | 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 2450 of file channel.c.
References ast_log(), ast_playtones_start(), LOG_DEBUG, 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().
02451 { 02452 /* Device does not support DTMF tones, lets fake 02453 * it by doing our own generation. */ 02454 static const char* dtmf_tones[] = { 02455 "941+1336", /* 0 */ 02456 "697+1209", /* 1 */ 02457 "697+1336", /* 2 */ 02458 "697+1477", /* 3 */ 02459 "770+1209", /* 4 */ 02460 "770+1336", /* 5 */ 02461 "770+1477", /* 6 */ 02462 "852+1209", /* 7 */ 02463 "852+1336", /* 8 */ 02464 "852+1477", /* 9 */ 02465 "697+1633", /* A */ 02466 "770+1633", /* B */ 02467 "852+1633", /* C */ 02468 "941+1633", /* D */ 02469 "941+1209", /* * */ 02470 "941+1477" /* # */ 02471 }; 02472 02473 if (!chan->tech->send_digit_begin) 02474 return 0; 02475 02476 if (!chan->tech->send_digit_begin(chan, digit)) 02477 return 0; 02478 02479 if (digit >= '0' && digit <='9') 02480 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02481 else if (digit >= 'A' && digit <= 'D') 02482 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02483 else if (digit == '*') 02484 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02485 else if (digit == '#') 02486 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02487 else { 02488 /* not handled */ 02489 if (option_debug) 02490 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02491 } 02492 02493 return 0; 02494 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
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 2496 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().
02497 { 02498 int res = -1; 02499 02500 if (chan->tech->send_digit_end) 02501 res = chan->tech->send_digit_end(chan, digit, duration); 02502 02503 if (res && chan->generator) 02504 ast_playtones_stop(chan); 02505 02506 return 0; 02507 }
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 2437 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().
02438 { 02439 int res = 0; 02440 /* Stop if we're a zombie or need a soft hangup */ 02441 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02442 return -1; 02443 CHECK_BLOCKING(chan); 02444 if (chan->tech->send_text) 02445 res = chan->tech->send_text(chan, text); 02446 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02447 return res; 02448 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 3598 of file channel.c.
References ast_cdr_setcid(), ast_channel_lock, ast_channel_unlock, ast_describe_caller_presentation(), ast_strdup, ast_channel::cdr, ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_pres, free, manager_event(), and S_OR.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), callerid_write(), disa_exec(), findmeexec(), handle_setcallerid(), lookupcidname_exec(), mgcp_ss(), privacy_exec(), read_config(), setcallerid_exec(), skinny_newcall(), ss_thread(), wait_for_answer(), and zt_read().
03599 { 03600 ast_channel_lock(chan); 03601 03602 if (callerid) { 03603 if (chan->cid.cid_num) 03604 free(chan->cid.cid_num); 03605 chan->cid.cid_num = ast_strdup(callerid); 03606 } 03607 if (calleridname) { 03608 if (chan->cid.cid_name) 03609 free(chan->cid.cid_name); 03610 chan->cid.cid_name = ast_strdup(calleridname); 03611 } 03612 if (ani) { 03613 if (chan->cid.cid_ani) 03614 free(chan->cid.cid_ani); 03615 chan->cid.cid_ani = ast_strdup(ani); 03616 } 03617 if (chan->cdr) 03618 ast_cdr_setcid(chan->cdr, chan); 03619 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03620 "Channel: %s\r\n" 03621 "CallerID: %s\r\n" 03622 "CallerIDName: %s\r\n" 03623 "Uniqueid: %s\r\n" 03624 "CID-CallingPres: %d (%s)\r\n", 03625 chan->name, 03626 S_OR(chan->cid.cid_num, "<Unknown>"), 03627 S_OR(chan->cid.cid_name, "<Unknown>"), 03628 chan->uniqueid, 03629 chan->cid.cid_pres, 03630 ast_describe_caller_presentation(chan->cid.cid_pres) 03631 ); 03632 03633 ast_channel_unlock(chan); 03634 }
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 2788 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_formats_reset(), ast_channel_make_compatible(), ast_do_masquerade(), ast_set_best_format(), 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(), milliwatt_exec(), mwanalyze_exec(), nv_background_detect_exec(), nv_detectfax_exec(), oh323_rtp_read(), process_sdp(), rpt(), rxfax_exec(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), speech_background(), txfax_exec(), and update_features().
02789 { 02790 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 02791 &chan->readtrans, 0); 02792 }
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 4403 of file channel.c.
References ast_variable::name, ast_variable::next, pbx_builtin_setvar_helper(), and ast_variable::value.
Referenced by __ast_request_and_dial(), ast_pbx_outgoing_app(), and ast_pbx_outgoing_exten().
04404 { 04405 struct ast_variable *cur; 04406 04407 for (cur = vars; cur; cur = cur->next) 04408 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04409 }
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 2794 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_formats_reset(), ast_channel_make_compatible(), ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_do_masquerade(), ast_openstream_full(), ast_set_best_format(), 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(), milliwatt_exec(), moh_alloc(), moh_files_release(), moh_release(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), oh323_rtp_read(), playtones_alloc(), playtones_release(), process_sdp(), rpt(), rxfax_exec(), send_waveform_to_channel(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), tonepair_alloc(), tonepair_release(), txfax_exec(), and update_features().
02795 { 02796 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 02797 &chan->writetrans, 1); 02798 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 3636 of file channel.c.
References ast_channel::_state, ast_device_state_changed_literal(), ast_state2str(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, manager_event(), and S_OR.
Referenced by __ast_read(), __oh323_update_info(), __zt_exception(), agent_call(), alsa_answer(), ast_answer(), cb_events(), check_availability(), do_bridge_masquerade(), gtalk_call(), gtalk_newcall(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_response_invite(), handle_soft_key_event_message(), handle_stimulus_message(), iax2_call(), mgcp_answer(), mgcp_call(), mgcp_ss(), misdn_call(), misdn_indication(), nbs_call(), nbs_hangup(), oh323_answer(), oss_answer(), pbx_builtin_busy(), pbx_builtin_congestion(), phone_answer(), phone_call(), phone_exception(), phone_hangup(), phone_write(), release_chan(), sip_answer(), skinny_answer(), skinny_call(), skinny_newcall(), ss_thread(), update_state(), zt_answer(), zt_call(), zt_handle_event(), zt_indicate(), and zt_read().
03637 { 03638 int oldstate = chan->_state; 03639 03640 if (oldstate == state) 03641 return 0; 03642 03643 chan->_state = state; 03644 ast_device_state_changed_literal(chan->name); 03645 /* setstate used to conditionally report Newchannel; this is no more */ 03646 manager_event(EVENT_FLAG_CALL, 03647 "Newstate", 03648 "Channel: %s\r\n" 03649 "State: %s\r\n" 03650 "CallerID: %s\r\n" 03651 "CallerIDName: %s\r\n" 03652 "Uniqueid: %s\r\n", 03653 chan->name, ast_state2str(chan->_state), 03654 S_OR(chan->cid.cid_num, "<unknown>"), 03655 S_OR(chan->cid.cid_name, "<unknown>"), 03656 chan->uniqueid); 03657 03658 return 0; 03659 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 1792 of file channel.c.
References ast_log(), LOG_DEBUG, option_debug, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_activate_generator(), ast_closestream(), ast_deactivate_generator(), ast_read_generator_actions(), and ast_readaudio_callback().
01793 { 01794 int res = -1; 01795 #ifdef HAVE_ZAPTEL 01796 if (c->timingfd > -1) { 01797 if (!func) { 01798 samples = 0; 01799 data = 0; 01800 } 01801 if (option_debug) 01802 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 01803 res = ioctl(c->timingfd, ZT_TIMERCONFIG, &samples); 01804 c->timingfunc = func; 01805 c->timingdata = data; 01806 } 01807 #endif 01808 return res; 01809 }
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 460 of file channel.c.
Referenced by handle_request_options().
00461 { 00462 return shutting_down; 00463 }
int ast_softhangup | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel.
chan | channel to be soft-hung-up Call the protocol layer, but don't destroy the channel structure (use this if you are trying to safely hangup a channel managed by another thread. | |
cause | Ast hangupcause for hangup |
Definition at line 1393 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(), connect_link(), 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(), unload_module(), and zt_handle_event().
01394 { 01395 int res; 01396 ast_channel_lock(chan); 01397 res = ast_softhangup_nolock(chan, cause); 01398 ast_channel_unlock(chan); 01399 return res; 01400 }
int ast_softhangup_nolock | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel (no channel lock).
chan | channel to be soft-hung-up | |
cause | Ast hangupcause for hangup (see cause.h) |
Definition at line 1379 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, and option_debug.
Referenced by ast_async_goto(), ast_softhangup(), attempt_transfer(), do_monitor(), oh323_indicate(), pickdown_channel(), sip_indicate(), and skinny_indicate().
01380 { 01381 if (option_debug) 01382 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01383 /* Inform channel driver that we need to be hung up, if it cares */ 01384 chan->_softhangup |= cause; 01385 ast_queue_frame(chan, &ast_null_frame); 01386 /* Interrupt any poll call or such */ 01387 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01388 pthread_kill(chan->blocker, SIGURG); 01389 return 0; 01390 }
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 599 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, and STATE2STR_BUFSIZE.
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().
00600 { 00601 char *buf; 00602 00603 switch(state) { 00604 case AST_STATE_DOWN: 00605 return "Down"; 00606 case AST_STATE_RESERVED: 00607 return "Rsrvd"; 00608 case AST_STATE_OFFHOOK: 00609 return "OffHook"; 00610 case AST_STATE_DIALING: 00611 return "Dialing"; 00612 case AST_STATE_RING: 00613 return "Ring"; 00614 case AST_STATE_RINGING: 00615 return "Ringing"; 00616 case AST_STATE_UP: 00617 return "Up"; 00618 case AST_STATE_BUSY: 00619 return "Busy"; 00620 case AST_STATE_DIALING_OFFHOOK: 00621 return "Dialing Offhook"; 00622 case AST_STATE_PRERING: 00623 return "Pre-ring"; 00624 default: 00625 if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE))) 00626 return "Unknown"; 00627 snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state); 00628 return buf; 00629 } 00630 }
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 587 of file channel.c.
References causes.
Referenced by pbx_builtin_hangup().
00588 { 00589 int x; 00590 00591 for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++) 00592 if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0) 00593 return causes[x].cause; 00594 00595 return -1; 00596 }
AST_THREADSTORAGE | ( | state2str_threadbuf | , | |
state2str_threadbuf_init | ||||
) |
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 4275 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04276 { 04277 int res; 04278 04279 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04280 return res; 04281 04282 /* Give us some wiggle room */ 04283 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04284 struct ast_frame *f = ast_read(chan); 04285 if (f) 04286 ast_frfree(f); 04287 else 04288 return -1; 04289 } 04290 return 0; 04291 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4257 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().
04258 { 04259 struct tonepair_def d = { 0, }; 04260 04261 d.freq1 = freq1; 04262 d.freq2 = freq2; 04263 d.duration = duration; 04264 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04265 if (ast_activate_generator(chan, &tonepair, &d)) 04266 return -1; 04267 return 0; 04268 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4270 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04271 { 04272 ast_deactivate_generator(chan); 04273 }
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 3031 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().
03032 { 03033 int res = -1; 03034 03035 /* Stop if we're a zombie or need a soft hangup */ 03036 ast_channel_lock(chan); 03037 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03038 if (chan->tech->transfer) { 03039 res = chan->tech->transfer(chan, dest); 03040 if (!res) 03041 res = 1; 03042 } else 03043 res = 0; 03044 } 03045 ast_channel_unlock(chan); 03046 return res; 03047 }
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 633 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(), misdn_call(), oh323_call(), zt_call(), and zt_new().
00634 { 00635 switch(transfercapability) { 00636 case AST_TRANS_CAP_SPEECH: 00637 return "SPEECH"; 00638 case AST_TRANS_CAP_DIGITAL: 00639 return "DIGITAL"; 00640 case AST_TRANS_CAP_RESTRICTED_DIGITAL: 00641 return "RESTRICTED_DIGITAL"; 00642 case AST_TRANS_CAP_3_1K_AUDIO: 00643 return "3K1AUDIO"; 00644 case AST_TRANS_CAP_DIGITAL_W_TONES: 00645 return "DIGITAL_W_TONES"; 00646 case AST_TRANS_CAP_VIDEO: 00647 return "VIDEO"; 00648 default: 00649 return "UNKNOWN"; 00650 } 00651 }
void ast_uninstall_music_functions | ( | void | ) |
Definition at line 4338 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
04339 { 04340 ast_moh_start_ptr = NULL; 04341 ast_moh_stop_ptr = NULL; 04342 ast_moh_cleanup_ptr = NULL; 04343 }
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 1776 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_waiting(), echo_exec(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), nv_background_detect_exec(), nv_detectfax_exec(), receive_dtmf_digits(), recordthread(), rxfax_exec(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), txfax_exec(), wait_for_hangup(), waitforring_exec(), and waitstream_core().
01777 { 01778 int oldms = ms; /* -1 if no timeout */ 01779 01780 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 01781 if ((ms < 0) && (oldms < 0)) 01782 ms = 0; 01783 return ms; 01784 }
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 1771 of file channel.c.
References ast_waitfor_nandfds().
Referenced by ast_feature_request_and_dial(), ast_udptl_bridge(), autoservice_run(), bridge_native_loop(), misdn_bridge(), monitor_dial(), rpt(), wait_for_answer(), wait_for_winner(), and zt_bridge().
01772 { 01773 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 01774 }
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 1615 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01616 { 01617 int winner = -1; 01618 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01619 return winner; 01620 }
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 1623 of file channel.c.
References ast_channel::_softhangup, ast_add_fd(), ast_channel_lock, ast_channel_unlock, ast_clear_flag, ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, ast_log(), AST_MAX_FDS, ast_set_flag, AST_SOFTHANGUP_TIMEOUT, CHECK_BLOCKING, errno, pollfd::fd, poll(), POLLPRI, and ast_channel::whentohangup.
Referenced by app_exec(), ast_waitfor(), ast_waitfor_n(), ast_waitfor_n_fd(), ast_waitfordigit_full(), conf_run(), find_cache(), run_agi(), and waitstream_core().
01625 { 01626 struct timeval start = { 0 , 0 }; 01627 struct pollfd *pfds = NULL; 01628 int res; 01629 long rms; 01630 int x, y, max; 01631 int sz; 01632 time_t now = 0; 01633 long whentohangup = 0, diff; 01634 struct ast_channel *winner = NULL; 01635 struct fdmap { 01636 int chan; 01637 int fdno; 01638 } *fdmap = NULL; 01639 01640 if ((sz = n * AST_MAX_FDS + nfds)) { 01641 pfds = alloca(sizeof(*pfds) * sz); 01642 fdmap = alloca(sizeof(*fdmap) * sz); 01643 } 01644 01645 if (outfd) 01646 *outfd = -99999; 01647 if (exception) 01648 *exception = 0; 01649 01650 /* Perform any pending masquerades */ 01651 for (x=0; x < n; x++) { 01652 ast_channel_lock(c[x]); 01653 if (c[x]->masq) { 01654 if (ast_do_masquerade(c[x])) { 01655 ast_log(LOG_WARNING, "Masquerade failed\n"); 01656 *ms = -1; 01657 ast_channel_unlock(c[x]); 01658 return NULL; 01659 } 01660 } 01661 if (c[x]->whentohangup) { 01662 if (!whentohangup) 01663 time(&now); 01664 diff = c[x]->whentohangup - now; 01665 if (diff < 1) { 01666 /* Should already be hungup */ 01667 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01668 ast_channel_unlock(c[x]); 01669 return c[x]; 01670 } 01671 if (!whentohangup || (diff < whentohangup)) 01672 whentohangup = diff; 01673 } 01674 ast_channel_unlock(c[x]); 01675 } 01676 /* Wait full interval */ 01677 rms = *ms; 01678 if (whentohangup) { 01679 rms = whentohangup * 1000; /* timeout in milliseconds */ 01680 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01681 rms = *ms; 01682 } 01683 /* 01684 * Build the pollfd array, putting the channels' fds first, 01685 * followed by individual fds. Order is important because 01686 * individual fd's must have priority over channel fds. 01687 */ 01688 max = 0; 01689 for (x=0; x<n; x++) { 01690 for (y=0; y<AST_MAX_FDS; y++) { 01691 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01692 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01693 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01694 } 01695 CHECK_BLOCKING(c[x]); 01696 } 01697 /* Add the individual fds */ 01698 for (x=0; x<nfds; x++) { 01699 fdmap[max].chan = -1; 01700 max += ast_add_fd(&pfds[max], fds[x]); 01701 } 01702 01703 if (*ms > 0) 01704 start = ast_tvnow(); 01705 01706 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01707 do { 01708 int kbrms = rms; 01709 if (kbrms > 600000) 01710 kbrms = 600000; 01711 res = poll(pfds, max, kbrms); 01712 if (!res) 01713 rms -= kbrms; 01714 } while (!res && (rms > 0)); 01715 } else { 01716 res = poll(pfds, max, rms); 01717 } 01718 for (x=0; x<n; x++) 01719 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01720 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01721 if (errno != EINTR) 01722 *ms = -1; 01723 return NULL; 01724 } 01725 if (whentohangup) { /* if we have a timeout, check who expired */ 01726 time(&now); 01727 for (x=0; x<n; x++) { 01728 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01729 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01730 if (winner == NULL) 01731 winner = c[x]; 01732 } 01733 } 01734 } 01735 if (res == 0) { /* no fd ready, reset timeout and done */ 01736 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01737 return winner; 01738 } 01739 /* 01740 * Then check if any channel or fd has a pending event. 01741 * Remember to check channels first and fds last, as they 01742 * must have priority on setting 'winner' 01743 */ 01744 for (x = 0; x < max; x++) { 01745 res = pfds[x].revents; 01746 if (res == 0) 01747 continue; 01748 if (fdmap[x].chan >= 0) { /* this is a channel */ 01749 winner = c[fdmap[x].chan]; /* override previous winners */ 01750 if (res & POLLPRI) 01751 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01752 else 01753 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01754 winner->fdno = fdmap[x].fdno; 01755 } else { /* this is an fd */ 01756 if (outfd) 01757 *outfd = pfds[x].fd; 01758 if (exception) 01759 *exception = (res & POLLPRI) ? -1 : 0; 01760 winner = NULL; 01761 } 01762 } 01763 if (*ms > 0) { 01764 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01765 if (*ms < 0) 01766 *ms = 0; 01767 } 01768 return winner; 01769 }
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 1787 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(), builtin_atxfer(), collect_digits(), common_exec(), cpeid_exec(), dialout(), directory_exec(), 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(), test1_client(), test1_server(), vm_execmain(), vm_forwardoptions(), vm_instructions(), vm_options(), vm_tempgreeting(), wait_a_bit(), and wait_our_turn().
01788 { 01789 return ast_waitfordigit_full(c, ms, -1, -1); 01790 }
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 1811 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().
01812 { 01813 /* Stop if we're a zombie or need a soft hangup */ 01814 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 01815 return -1; 01816 01817 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 01818 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 01819 01820 /* Wait for a digit, no more than ms milliseconds total. */ 01821 while (ms) { 01822 struct ast_channel *rchan; 01823 int outfd; 01824 01825 errno = 0; 01826 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 01827 if (!rchan && outfd < 0 && ms) { 01828 if (errno == 0 || errno == EINTR) 01829 continue; 01830 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 01831 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01832 return -1; 01833 } else if (outfd > -1) { 01834 /* The FD we were watching has something waiting */ 01835 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01836 return 1; 01837 } else if (rchan) { 01838 int res; 01839 struct ast_frame *f = ast_read(c); 01840 if (!f) 01841 return -1; 01842 01843 switch(f->frametype) { 01844 case AST_FRAME_DTMF_BEGIN: 01845 break; 01846 case AST_FRAME_DTMF_END: 01847 res = f->subclass; 01848 ast_frfree(f); 01849 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01850 return res; 01851 case AST_FRAME_CONTROL: 01852 switch(f->subclass) { 01853 case AST_CONTROL_HANGUP: 01854 ast_frfree(f); 01855 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01856 return -1; 01857 case AST_CONTROL_RINGING: 01858 case AST_CONTROL_ANSWER: 01859 case AST_CONTROL_SRCUPDATE: 01860 /* Unimportant */ 01861 break; 01862 default: 01863 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 01864 break; 01865 } 01866 break; 01867 case AST_FRAME_VOICE: 01868 /* Write audio if appropriate */ 01869 if (audiofd > -1) 01870 write(audiofd, f->data, f->datalen); 01871 default: 01872 /* Ignore */ 01873 break; 01874 } 01875 ast_frfree(f); 01876 } 01877 } 01878 01879 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01880 01881 return 0; /* Time is up */ 01882 }
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 1130 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01132 { 01133 return channel_find_locked(chan, NULL, 0, context, exten); 01134 }
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 1117 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01119 { 01120 return channel_find_locked(chan, name, namelen, NULL, NULL); 01121 }
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 2548 of file channel.c.
References ast_channel::_softhangup, AST_AUDIOHOOK_DIRECTION_WRITE, ast_audiohook_write_list(), ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_UNHOLD, ast_deactivate_generator(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_WRITE_INT, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_MODEM, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, ast_log(), AST_MONITOR_RUNNING, ast_seekstream(), ast_senddigit_begin(), ast_senddigit_end(), AST_SOFTHANGUP_DEV, ast_test_flag, ast_translate(), ast_writestream(), ast_channel::audiohooks, CHECK_BLOCKING, ast_frame::data, ast_frame::datalen, DEBUGCHAN_FLAG, f, ast_channel::fout, FRAMECOUNT_INC, ast_frame::frametype, ast_channel::generatordata, ast_channel_tech::indicate, ast_channel::insmpl, ast_frame::len, LOG_DEBUG, ast_channel::masq, ast_channel::masqr, ast_channel::monitor, MONITOR_DELAY, option_debug, ast_channel::outsmpl, ast_channel::rawwriteformat, SEEK_FORCECUR, ast_channel_tech::send_html, ast_channel_tech::send_text, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel_tech::write, ast_channel_monitor::write_stream, ast_channel_tech::write_video, and ast_channel::writetrans.
Referenced by adsi_careful_send(), agent_write(), ast_prod(), ast_readaudio_callback(), ast_readvideo_callback(), ast_udptl_bridge(), ast_write_video(), bridge_native_loop(), conf_queue_dtmf(), conf_run(), 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(), mwanalyze_exec(), NBScat_exec(), rpt(), rxfax_exec(), send_link_dtmf(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), spy_generate(), txfax_exec(), wait_for_answer(), and zt_bridge().
02549 { 02550 int res = -1; 02551 int count = 0; 02552 struct ast_frame *f = NULL, *f2 = NULL; 02553 02554 /*Deadlock avoidance*/ 02555 while(ast_channel_trylock(chan)) { 02556 /*cannot goto done since the channel is not locked*/ 02557 if(count++ > 10) { 02558 if(option_debug) 02559 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 02560 return 0; 02561 } 02562 usleep(1); 02563 } 02564 /* Stop if we're a zombie or need a soft hangup */ 02565 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02566 goto done; 02567 02568 /* Handle any pending masquerades */ 02569 if (chan->masq && ast_do_masquerade(chan)) { 02570 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02571 goto done; 02572 } 02573 if (chan->masqr) { 02574 res = 0; /* XXX explain, why 0 ? */ 02575 goto done; 02576 } 02577 if (chan->generatordata) { 02578 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02579 ast_deactivate_generator(chan); 02580 else { 02581 if (fr->frametype == AST_FRAME_DTMF_END) { 02582 /* There is a generator running while we're in the middle of a digit. 02583 * It's probably inband DTMF, so go ahead and pass it so it can 02584 * stop the generator */ 02585 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02586 ast_channel_unlock(chan); 02587 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02588 ast_channel_lock(chan); 02589 CHECK_BLOCKING(chan); 02590 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 02591 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 02592 res = (chan->tech->indicate == NULL) ? 0 : 02593 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02594 } 02595 res = 0; /* XXX explain, why 0 ? */ 02596 goto done; 02597 } 02598 } 02599 /* High bit prints debugging */ 02600 if (chan->fout & DEBUGCHAN_FLAG) 02601 ast_frame_dump(chan->name, fr, ">>"); 02602 CHECK_BLOCKING(chan); 02603 switch(fr->frametype) { 02604 case AST_FRAME_CONTROL: 02605 res = (chan->tech->indicate == NULL) ? 0 : 02606 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02607 break; 02608 case AST_FRAME_DTMF_BEGIN: 02609 if (chan->audiohooks) { 02610 struct ast_frame *old_frame = fr; 02611 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02612 if (old_frame != fr) 02613 f = fr; 02614 } 02615 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02616 ast_channel_unlock(chan); 02617 res = ast_senddigit_begin(chan, fr->subclass); 02618 ast_channel_lock(chan); 02619 CHECK_BLOCKING(chan); 02620 break; 02621 case AST_FRAME_DTMF_END: 02622 if (chan->audiohooks) { 02623 struct ast_frame *old_frame = fr; 02624 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02625 if (old_frame != fr) 02626 f = fr; 02627 } 02628 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02629 ast_channel_unlock(chan); 02630 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02631 ast_channel_lock(chan); 02632 CHECK_BLOCKING(chan); 02633 break; 02634 case AST_FRAME_TEXT: 02635 res = (chan->tech->send_text == NULL) ? 0 : 02636 chan->tech->send_text(chan, (char *) fr->data); 02637 break; 02638 case AST_FRAME_HTML: 02639 res = (chan->tech->send_html == NULL) ? 0 : 02640 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02641 break; 02642 case AST_FRAME_VIDEO: 02643 /* XXX Handle translation of video codecs one day XXX */ 02644 res = (chan->tech->write_video == NULL) ? 0 : 02645 chan->tech->write_video(chan, fr); 02646 break; 02647 case AST_FRAME_MODEM: 02648 res = (chan->tech->write == NULL) ? 0 : 02649 chan->tech->write(chan, fr); 02650 break; 02651 case AST_FRAME_VOICE: 02652 if (chan->tech->write == NULL) 02653 break; /*! \todo XXX should return 0 maybe ? */ 02654 02655 if (chan->audiohooks) { 02656 struct ast_frame *old_frame = fr; 02657 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02658 if (old_frame != fr) 02659 f2 = fr; 02660 } 02661 02662 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02663 if (fr->subclass == chan->rawwriteformat) 02664 f = fr; 02665 else 02666 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02667 02668 /* If we have no frame of audio, then we have to bail out */ 02669 if (!f) { 02670 res = 0; 02671 break; 02672 } 02673 02674 /* If Monitor is running on this channel, then we have to write frames out there too */ 02675 if (chan->monitor && chan->monitor->write_stream) { 02676 /* XXX must explain this code */ 02677 #ifndef MONITOR_CONSTANT_DELAY 02678 int jump = chan->insmpl - chan->outsmpl - 4 * f->samples; 02679 if (jump >= 0) { 02680 jump = chan->insmpl - chan->outsmpl; 02681 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 02682 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02683 chan->outsmpl += jump + f->samples; 02684 } else 02685 chan->outsmpl += f->samples; 02686 #else 02687 int jump = chan->insmpl - chan->outsmpl; 02688 if (jump - MONITOR_DELAY >= 0) { 02689 if (ast_seekstream(chan->monitor->write_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02690 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02691 chan->outsmpl += jump; 02692 } else 02693 chan->outsmpl += f->samples; 02694 #endif 02695 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02696 if (ast_writestream(chan->monitor->write_stream, f) < 0) 02697 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 02698 } 02699 } 02700 02701 if (f) 02702 res = chan->tech->write(chan,f); 02703 else 02704 res = 0; 02705 break; 02706 case AST_FRAME_NULL: 02707 case AST_FRAME_IAX: 02708 /* Ignore these */ 02709 res = 0; 02710 break; 02711 default: 02712 /* At this point, fr is the incoming frame and f is NULL. Channels do 02713 * not expect to get NULL as a frame pointer and will segfault. Hence, 02714 * we output the original frame passed in. */ 02715 res = chan->tech->write(chan, fr); 02716 break; 02717 } 02718 02719 if (f && f != fr) 02720 ast_frfree(f); 02721 if (f2) 02722 ast_frfree(f2); 02723 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02724 /* Consider a write failure to force a soft hangup */ 02725 if (res < 0) 02726 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02727 else { 02728 chan->fout = FRAMECOUNT_INC(chan->fout); 02729 } 02730 done: 02731 ast_channel_unlock(chan); 02732 return res; 02733 }
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 2537 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02538 { 02539 int res; 02540 if (!chan->tech->write_video) 02541 return 0; 02542 res = ast_write(chan, fr); 02543 if (!res) 02544 res = 1; 02545 return res; 02546 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 3671 of file channel.c.
References ast_autoservice_start(), ast_autoservice_stop(), AST_DIGIT_ANY, ast_say_number(), and ast_stream_and_wait().
Referenced by ast_channel_bridge().
03672 { 03673 int min = 0, sec = 0, check; 03674 03675 check = ast_autoservice_start(peer); 03676 if (check) 03677 return; 03678 03679 if (remain > 0) { 03680 if (remain / 60 > 1) { 03681 min = remain / 60; 03682 sec = remain % 60; 03683 } else { 03684 sec = remain; 03685 } 03686 } 03687 03688 if (!strcmp(sound,"timeleft")) { /* Queue support */ 03689 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 03690 if (min) { 03691 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 03692 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 03693 } 03694 if (sec) { 03695 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 03696 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 03697 } 03698 } else { 03699 ast_stream_and_wait(chan, sound, chan->language, ""); 03700 } 03701 03702 ast_autoservice_stop(peer); 03703 }
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 1016 of file channel.c.
References ast_channel_trylock, AST_LIST_LOCK, AST_LIST_NEXT, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), channels, ast_channel::context, ast_channel::exten, LOG_DEBUG, ast_channel::macrocontext, ast_channel::macroexten, 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().
01019 { 01020 const char *msg = prev ? "deadlock" : "initial deadlock"; 01021 int retries; 01022 struct ast_channel *c; 01023 const struct ast_channel *_prev = prev; 01024 01025 for (retries = 0; retries < 10; retries++) { 01026 int done; 01027 AST_LIST_LOCK(&channels); 01028 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01029 prev = _prev; 01030 if (prev) { /* look for next item */ 01031 if (c != prev) /* not this one */ 01032 continue; 01033 /* found, prepare to return c->next */ 01034 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01035 /* If prev was the last item on the channel list, then we just 01036 * want to return NULL, instead of trying to deref NULL in the 01037 * next section. 01038 */ 01039 prev = NULL; 01040 /* We want prev to be NULL in case we end up doing more searching through 01041 * the channel list to find the channel (ie: name searching). If we didn't 01042 * set this to NULL the logic would just blow up 01043 * XXX Need a better explanation for this ... 01044 */ 01045 } 01046 if (name) { /* want match by name */ 01047 if ((!namelen && strcasecmp(c->name, name)) || 01048 (namelen && strncasecmp(c->name, name, namelen))) 01049 continue; /* name match failed */ 01050 } else if (exten) { 01051 if (context && strcasecmp(c->context, context) && 01052 strcasecmp(c->macrocontext, context)) 01053 continue; /* context match failed */ 01054 if (strcasecmp(c->exten, exten) && 01055 strcasecmp(c->macroexten, exten)) 01056 continue; /* exten match failed */ 01057 } 01058 /* if we get here, c points to the desired record */ 01059 break; 01060 } 01061 /* exit if chan not found or mutex acquired successfully */ 01062 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01063 done = c == NULL || ast_channel_trylock(c) == 0; 01064 if (!done) { 01065 if (option_debug) 01066 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01067 if (retries == 9) { 01068 /* We are about to fail due to a deadlock, so report this 01069 * while we still have the list lock. 01070 */ 01071 if (option_debug) 01072 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01073 /* As we have deadlocked, we will skip this channel and 01074 * see if there is another match. 01075 * NOTE: No point doing this for a full-name match, 01076 * as there can be no more matches. 01077 */ 01078 if (!(name && !namelen)) { 01079 prev = c; 01080 retries = -1; 01081 } 01082 } 01083 } 01084 AST_LIST_UNLOCK(&channels); 01085 if (done) 01086 return c; 01087 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01088 * starting from the beginning of the list we can restore our saved pointer to the previous 01089 * channel and start from there. 01090 */ 01091 prev = _prev; 01092 usleep(1); /* give other threads a chance before retrying */ 01093 } 01094 01095 return NULL; 01096 }
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 4490 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
04491 { 04492 switch (reason) { 04493 case CHANNEL_MODULE_LOAD: 04494 return "LOAD (Channel module load)"; 04495 04496 case CHANNEL_MODULE_RELOAD: 04497 return "RELOAD (Channel module reload)"; 04498 04499 case CHANNEL_CLI_RELOAD: 04500 return "CLIRELOAD (Channel module reload by CLI command)"; 04501 04502 default: 04503 return "MANAGERRELOAD (Channel module reload by manager)"; 04504 } 04505 };
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 3313 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::name, ast_var_t::value, and ast_channel::varshead.
Referenced by ast_do_masquerade().
03314 { 03315 struct ast_var_t *current, *newvar; 03316 /* Append variables from clone channel into original channel */ 03317 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03318 if (AST_LIST_FIRST(&clone->varshead)) 03319 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03320 03321 /* then, dup the varshead list into the clone */ 03322 03323 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 03324 newvar = ast_var_assign(current->name, current->value); 03325 if (newvar) 03326 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 03327 } 03328 }
static char* complete_channeltypes | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 333 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00334 { 00335 struct chanlist *cl; 00336 int which = 0; 00337 int wordlen; 00338 char *ret = NULL; 00339 00340 if (pos != 3) 00341 return NULL; 00342 00343 wordlen = strlen(word); 00344 00345 AST_LIST_TRAVERSE(&backends, cl, list) { 00346 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00347 ret = strdup(cl->tech->type); 00348 break; 00349 } 00350 } 00351 00352 return ret; 00353 }
static char* complete_channeltypes_deprecated | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 311 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00312 { 00313 struct chanlist *cl; 00314 int which = 0; 00315 int wordlen; 00316 char *ret = NULL; 00317 00318 if (pos != 2) 00319 return NULL; 00320 00321 wordlen = strlen(word); 00322 00323 AST_LIST_TRAVERSE(&backends, cl, list) { 00324 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00325 ret = strdup(cl->tech->type); 00326 break; 00327 } 00328 } 00329 00330 return ret; 00331 }
static void free_cid | ( | struct ast_callerid * | cid | ) | [static] |
Definition at line 1163 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().
01164 { 01165 if (cid->cid_dnid) 01166 free(cid->cid_dnid); 01167 if (cid->cid_num) 01168 free(cid->cid_num); 01169 if (cid->cid_name) 01170 free(cid->cid_name); 01171 if (cid->cid_ani) 01172 free(cid->cid_ani); 01173 if (cid->cid_rdnis) 01174 free(cid->cid_rdnis); 01175 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1402 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().
01403 { 01404 if (clone->writetrans) 01405 ast_translator_free_path(clone->writetrans); 01406 if (clone->readtrans) 01407 ast_translator_free_path(clone->readtrans); 01408 clone->writetrans = NULL; 01409 clone->readtrans = NULL; 01410 clone->rawwriteformat = clone->nativeformats; 01411 clone->rawreadformat = clone->nativeformats; 01412 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1556 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), ast_log(), LOG_DEBUG, and option_debug.
Referenced by ast_activate_generator(), and ast_read_generator_actions().
01557 { 01558 /* Called if generator doesn't have data */ 01559 void *tmp; 01560 int res; 01561 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01562 struct ast_channel *chan = (struct ast_channel *)data; 01563 01564 ast_channel_lock(chan); 01565 tmp = chan->generatordata; 01566 chan->generatordata = NULL; 01567 if (chan->generator) 01568 generate = chan->generator->generate; 01569 ast_channel_unlock(chan); 01570 01571 if (!tmp || !generate) 01572 return 0; 01573 01574 res = generate(chan, tmp, 0, 160); 01575 01576 chan->generatordata = tmp; 01577 01578 if (res) { 01579 if (option_debug) 01580 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01581 ast_deactivate_generator(chan); 01582 } 01583 01584 return 0; 01585 }
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 2735 of file channel.c.
References ast_channel_lock, ast_channel_unlock, AST_FORMAT_AUDIO_MASK, ast_getformatname(), ast_log(), ast_translator_best_choice(), ast_translator_build_path(), ast_translator_free_path(), LOG_DEBUG, ast_channel::nativeformats, and option_debug.
Referenced by ast_set_read_format(), and ast_set_write_format().
02737 { 02738 int native; 02739 int res; 02740 02741 /* Make sure we only consider audio */ 02742 fmt &= AST_FORMAT_AUDIO_MASK; 02743 02744 native = chan->nativeformats; 02745 /* Find a translation path from the native format to one of the desired formats */ 02746 if (!direction) 02747 /* reading */ 02748 res = ast_translator_best_choice(&fmt, &native); 02749 else 02750 /* writing */ 02751 res = ast_translator_best_choice(&native, &fmt); 02752 02753 if (res < 0) { 02754 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 02755 ast_getformatname(native), ast_getformatname(fmt)); 02756 return -1; 02757 } 02758 02759 /* Now we have a good choice for both. */ 02760 ast_channel_lock(chan); 02761 02762 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 02763 /* the channel is already in these formats, so nothing to do */ 02764 ast_channel_unlock(chan); 02765 return 0; 02766 } 02767 02768 *rawformat = native; 02769 /* User perspective is fmt */ 02770 *format = fmt; 02771 /* Free any read translation we have right now */ 02772 if (*trans) 02773 ast_translator_free_path(*trans); 02774 /* Build a translation path from the raw format to the desired format */ 02775 if (!direction) 02776 /* reading */ 02777 *trans = ast_translator_build_path(*format, *rawformat); 02778 else 02779 /* writing */ 02780 *trans = ast_translator_build_path(*rawformat, *format); 02781 ast_channel_unlock(chan); 02782 if (option_debug) 02783 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 02784 direction ? "write" : "read", ast_getformatname(fmt)); 02785 return 0; 02786 }
static int show_channeltype | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 258 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, channels, ast_channel_tech::devicestate, ast_channel_tech::indicate, 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.
00259 { 00260 struct chanlist *cl = NULL; 00261 00262 if (argc != 4) 00263 return RESULT_SHOWUSAGE; 00264 00265 if (AST_LIST_LOCK(&channels)) { 00266 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00267 return RESULT_FAILURE; 00268 } 00269 00270 AST_LIST_TRAVERSE(&backends, cl, list) { 00271 if (!strncasecmp(cl->tech->type, argv[3], strlen(cl->tech->type))) { 00272 break; 00273 } 00274 } 00275 00276 00277 if (!cl) { 00278 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]); 00279 AST_LIST_UNLOCK(&channels); 00280 return RESULT_FAILURE; 00281 } 00282 00283 ast_cli(fd, 00284 "-- Info about channel driver: %s --\n" 00285 " Device State: %s\n" 00286 " Indication: %s\n" 00287 " Transfer : %s\n" 00288 " Capabilities: %d\n" 00289 " Digit Begin: %s\n" 00290 " Digit End: %s\n" 00291 " Send HTML : %s\n" 00292 " Image Support: %s\n" 00293 " Text Support: %s\n", 00294 cl->tech->type, 00295 (cl->tech->devicestate) ? "yes" : "no", 00296 (cl->tech->indicate) ? "yes" : "no", 00297 (cl->tech->transfer) ? "yes" : "no", 00298 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00299 (cl->tech->send_digit_begin) ? "yes" : "no", 00300 (cl->tech->send_digit_end) ? "yes" : "no", 00301 (cl->tech->send_html) ? "yes" : "no", 00302 (cl->tech->send_image) ? "yes" : "no", 00303 (cl->tech->send_text) ? "yes" : "no" 00304 00305 ); 00306 00307 AST_LIST_UNLOCK(&channels); 00308 return RESULT_SUCCESS; 00309 }
static int show_channeltype_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 205 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, channels, ast_channel_tech::devicestate, ast_channel_tech::indicate, 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.
00206 { 00207 struct chanlist *cl = NULL; 00208 00209 if (argc != 3) 00210 return RESULT_SHOWUSAGE; 00211 00212 if (AST_LIST_LOCK(&channels)) { 00213 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00214 return RESULT_FAILURE; 00215 } 00216 00217 AST_LIST_TRAVERSE(&backends, cl, list) { 00218 if (!strncasecmp(cl->tech->type, argv[2], strlen(cl->tech->type))) { 00219 break; 00220 } 00221 } 00222 00223 00224 if (!cl) { 00225 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[2]); 00226 AST_LIST_UNLOCK(&channels); 00227 return RESULT_FAILURE; 00228 } 00229 00230 ast_cli(fd, 00231 "-- Info about channel driver: %s --\n" 00232 " Device State: %s\n" 00233 " Indication: %s\n" 00234 " Transfer : %s\n" 00235 " Capabilities: %d\n" 00236 " Digit Begin: %s\n" 00237 " Digit End: %s\n" 00238 " Send HTML : %s\n" 00239 " Image Support: %s\n" 00240 " Text Support: %s\n", 00241 cl->tech->type, 00242 (cl->tech->devicestate) ? "yes" : "no", 00243 (cl->tech->indicate) ? "yes" : "no", 00244 (cl->tech->transfer) ? "yes" : "no", 00245 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00246 (cl->tech->send_digit_begin) ? "yes" : "no", 00247 (cl->tech->send_digit_end) ? "yes" : "no", 00248 (cl->tech->send_html) ? "yes" : "no", 00249 (cl->tech->send_image) ? "yes" : "no", 00250 (cl->tech->send_text) ? "yes" : "no" 00251 00252 ); 00253 00254 AST_LIST_UNLOCK(&channels); 00255 return RESULT_SUCCESS; 00256 }
static int show_channeltypes | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 178 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), channels, ast_channel_tech::description, ast_channel_tech::devicestate, FORMAT, ast_channel_tech::indicate, LOG_WARNING, RESULT_SUCCESS, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00179 { 00180 #define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" 00181 struct chanlist *cl; 00182 int count_chan = 0; 00183 00184 ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer"); 00185 ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------"); 00186 if (AST_LIST_LOCK(&channels)) { 00187 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00188 return -1; 00189 } 00190 AST_LIST_TRAVERSE(&backends, cl, list) { 00191 ast_cli(fd, FORMAT, cl->tech->type, cl->tech->description, 00192 (cl->tech->devicestate) ? "yes" : "no", 00193 (cl->tech->indicate) ? "yes" : "no", 00194 (cl->tech->transfer) ? "yes" : "no"); 00195 count_chan++; 00196 } 00197 AST_LIST_UNLOCK(&channels); 00198 ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan); 00199 return RESULT_SUCCESS; 00200 00201 #undef FORMAT 00202 00203 }
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 4422 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04423 { 04424 short buf[samples]; 04425 struct ast_frame frame = { 04426 .frametype = AST_FRAME_VOICE, 04427 .subclass = AST_FORMAT_SLINEAR, 04428 .data = buf, 04429 .samples = samples, 04430 .datalen = sizeof(buf), 04431 }; 04432 memset(buf, 0, sizeof(buf)); 04433 if (ast_write(chan, &frame)) 04434 return -1; 04435 return 0; 04436 }
static void silence_generator_release | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static void* tonepair_alloc | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4175 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, tonepair_release(), tonepair_def::vol, and ast_channel::writeformat.
04176 { 04177 struct tonepair_state *ts; 04178 struct tonepair_def *td = params; 04179 04180 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04181 return NULL; 04182 ts->origwfmt = chan->writeformat; 04183 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04184 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04185 tonepair_release(NULL, ts); 04186 ts = NULL; 04187 } else { 04188 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04189 ts->v1_1 = 0; 04190 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04191 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04192 ts->v2_1 = 0; 04193 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04194 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04195 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04196 ts->duration = td->duration; 04197 ts->modulate = 0; 04198 } 04199 /* Let interrupts interrupt :) */ 04200 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04201 return ts; 04202 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4204 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.
04205 { 04206 struct tonepair_state *ts = data; 04207 int x; 04208 04209 /* we need to prepare a frame with 16 * timelen samples as we're 04210 * generating SLIN audio 04211 */ 04212 len = samples * 2; 04213 04214 if (len > sizeof(ts->data) / 2 - 1) { 04215 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04216 return -1; 04217 } 04218 memset(&ts->f, 0, sizeof(ts->f)); 04219 for (x=0;x<len/2;x++) { 04220 ts->v1_1 = ts->v2_1; 04221 ts->v2_1 = ts->v3_1; 04222 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04223 04224 ts->v1_2 = ts->v2_2; 04225 ts->v2_2 = ts->v3_2; 04226 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04227 if (ts->modulate) { 04228 int p; 04229 p = ts->v3_2 - 32768; 04230 if (p < 0) p = -p; 04231 p = ((p * 9) / 10) + 1; 04232 ts->data[x] = (ts->v3_1 * p) >> 15; 04233 } else 04234 ts->data[x] = ts->v3_1 + ts->v3_2; 04235 } 04236 ts->f.frametype = AST_FRAME_VOICE; 04237 ts->f.subclass = AST_FORMAT_SLINEAR; 04238 ts->f.datalen = len; 04239 ts->f.samples = samples; 04240 ts->f.offset = AST_FRIENDLY_OFFSET; 04241 ts->f.data = ts->data; 04242 ast_write(chan, &ts->f); 04243 ts->pos += x; 04244 if (ts->duration > 0) { 04245 if (ts->pos >= ts->duration * 8) 04246 return -1; 04247 } 04248 return 0; 04249 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4166 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04167 { 04168 struct tonepair_state *ts = params; 04169 04170 if (chan) 04171 ast_set_write_format(chan, ts->origwfmt); 04172 free(ts); 04173 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4327 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 4325 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 4326 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 4438 of file channel.c.
Referenced by ast_channel_start_silence_generator().
struct ast_generator tonepair [static] |
Initial value:
{ alloc: tonepair_alloc, release: tonepair_release, generate: tonepair_generator, }
Definition at line 4251 of file channel.c.
Referenced by ast_tonepair_start().