#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/chanspy.h"
#include "asterisk/musiconhold.h"
#include "asterisk/logger.h"
#include "asterisk/say.h"
#include "asterisk/file.h"
#include "asterisk/cli.h"
#include "asterisk/translate.h"
#include "asterisk/manager.h"
#include "asterisk/chanvars.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/monitor.h"
#include "asterisk/causes.h"
#include "asterisk/callerid.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/transcap.h"
#include "asterisk/devicestate.h"
#include "asterisk/sha1.h"
#include "asterisk/threadstorage.h"
#include "asterisk/slinfactory.h"
Go to the source code of this file.
Data Structures | |
struct | ast_cause |
struct | ast_channel_spy_list |
struct | ast_channel_whisper_buffer |
struct | ast_silence_generator |
struct | chanlist |
struct | channel_spy_trans |
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 | SPY_QUEUE_SAMPLE_LIMIT 4000 |
#define | STATE2STR_BUFSIZE 32 |
Enumerations | |
enum | spy_direction { SPY_READ, SPY_WRITE } |
Functions | |
static struct ast_frame * | __ast_read (struct ast_channel *chan, int dropaudio) |
struct ast_channel * | __ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, int callingpres, const char *cid_num, const char *cid_name, struct outgoing_helper *oh, char *uniqueid) |
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 | |
char * | ast_alloc_uniqueid (void) |
Create a uniqueid. | |
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. | |
struct 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. | |
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 new 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 when to hangup channel. | |
int | ast_channel_datastore_add (struct ast_channel *chan, struct ast_datastore *datastore) |
Add a datastore to a channel. | |
struct ast_datastore * | ast_channel_datastore_alloc (const struct ast_datastore_info *info, char *uid) |
Create a channel datastore structure. | |
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. | |
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 new telephony channel in Asterisk. | |
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 hangup channel. | |
int | ast_channel_spy_add (struct ast_channel *chan, struct ast_channel_spy *spy) |
Adds a spy to a channel, to begin receiving copies of the channel's audio frames. | |
void | ast_channel_spy_free (struct ast_channel_spy *spy) |
Free a spy. | |
struct ast_frame * | ast_channel_spy_read_frame (struct ast_channel_spy *spy, unsigned int samples) |
Read one (or more) frames of audio from a channel being spied upon. | |
void | ast_channel_spy_remove (struct ast_channel *chan, struct ast_channel_spy *spy) |
Remove a spy from a channel. | |
void | ast_channel_spy_stop_by_type (struct ast_channel *chan, const char *type) |
Find all spies of a particular type on a channel and stop them. | |
void | ast_channel_spy_trigger_wait (struct ast_channel_spy *spy) |
Efficiently wait until audio is available for a spy, or an exception occurs. | |
struct 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. | |
struct ast_channel * | ast_channel_walk_locked (const struct ast_channel *prev) |
Browse channels in use. | |
int | ast_channel_whisper_feed (struct ast_channel *chan, struct ast_frame *f) |
Feed an audio frame into the whisper buffer on a channel. | |
int | ast_channel_whisper_start (struct ast_channel *chan) |
Begin 'whispering' onto a channel. | |
void | ast_channel_whisper_stop (struct ast_channel *chan) |
Stop 'whispering' onto a channel. | |
void | ast_channels_init (void) |
struct ast_variable * | ast_channeltype_list (void) |
return an ast_variable list of channeltypes | |
int | ast_check_hangup (struct ast_channel *chan) |
Checks 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) |
Masquerade a channel. | |
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) |
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. | |
struct ast_channel * | ast_get_channel_by_name_locked (const char *name) |
Get channel by name and lock it. | |
struct ast_channel * | ast_get_channel_by_name_prefix_locked (const char *name, const int namelen) |
Get channel by name prefix and lock it. | |
struct ast_channel * | ast_get_channel_by_uniqueid_locked (const char *uniqueid) |
struct 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) |
Hangup 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 group and pickup group ---. | |
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. | |
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 media frame. | |
int | ast_queue_hangup (struct ast_channel *chan) |
Queue a hangup frame for channel. | |
struct 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) |
struct ast_frame * | ast_read_noaudio (struct ast_channel *chan) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame. | |
int | ast_readstring (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders) |
int | ast_readstring_full (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders, int audiofd, int ctrlfd) |
int | ast_recvchar (struct ast_channel *chan, int timeout) |
Receives a text character from a channel. | |
char * | ast_recvtext (struct ast_channel *chan, int timeout) |
Receives a text string from a channel Read a string of text from a channel. | |
struct ast_channel * | ast_request (const char *type, int format, void *data, int *cause) |
Requests a channel. | |
struct ast_channel * | ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, int callingpres, const char *cidnum, const char *cidname, char *uniqueid) |
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. | |
struct ast_channel * | ast_request_with_uniqueid (const char *type, int format, void *data, int *cause, char *uniqueid) |
Requests a channel. | |
int | ast_safe_sleep (struct ast_channel *chan, int ms) |
Wait, look for hangups. | |
int | ast_safe_sleep_conditional (struct ast_channel *chan, int ms, int(*cond)(void *), void *data) |
Wait, look for hangups and condition arg. | |
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_send_message (const char *type, void *data, char *to, char *from, char *message, int ispdu) |
"Requests" a channel for sending a message | |
int | ast_senddigit (struct ast_channel *chan, char digit) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_begin (struct ast_channel *chan, char digit) |
int | ast_senddigit_end (struct ast_channel *chan, char digit, unsigned int duration) |
int | ast_sendtext (struct ast_channel *chan, const char *dest, const char *text, int ispdu) |
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_setstate_and_cid (struct ast_channel *chan, enum ast_channel_state state, char *cid_num, char *cid_name) |
Change the state of a channel and the callerid of the calling 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 a channel, lock. | |
int | ast_softhangup_nolock (struct ast_channel *chan, int cause) |
Softly hangup a channel, don't 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 call to dest, if the channel supports transfer. | |
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. | |
struct 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) |
Wait for x amount of time on a file descriptor to have input. | |
struct ast_channel * | ast_waitfor_nandfds (struct ast_channel **c, int n, int *fds, int nfds, int *exception, int *outfd, int *ms) |
Wait for x amount of time on a file descriptor to have input. | |
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. | |
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. | |
struct ast_channel * | ast_walk_channel_by_name_prefix_locked (const struct ast_channel *chan, const char *name, const int namelen) |
Get next channel by name prefix and lock it. | |
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, const char *uniqueid) |
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 | copy_data_from_queue (struct ast_channel_spy_queue *queue, short *buf, unsigned int samples) |
static void | detach_spies (struct ast_channel *chan) |
static void | free_cid (struct ast_callerid *cid) |
static void | free_translation (struct ast_channel *clone) |
static int | generator_force (const void *data) |
static void | queue_frame_to_spies (struct ast_channel *chan, struct ast_frame *f, enum spy_direction dir) |
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 | spy_cleanup (struct ast_channel *chan) |
static void | spy_detach (struct ast_channel_spy *spy, struct ast_channel *chan) |
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 |
struct 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 109 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 112 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 116 of file channel.c.
Referenced by __ast_read().
#define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define SPY_QUEUE_SAMPLE_LIMIT 4000 |
#define STATE2STR_BUFSIZE 32 |
enum spy_direction |
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static, read] |
Definition at line 2228 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::alertpipe, 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::blocker, ast_channel::cdr, 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, ast_generator::generate, ast_channel::generator, ast_channel::generatordata, ast_channel::insmpl, ast_frame::len, LOG_DEBUG, LOG_DTMF, LOG_NOTICE, LOG_WARNING, ast_channel::masq, ast_channel::monitor, ast_channel::nativeformats, option_debug, ast_channel::outsmpl, queue_frame_to_spies(), ast_channel_tech::read, ast_channel_monitor::read_stream, ast_channel::readtrans, ast_frame::samples, SEEK_FORCECUR, ast_channel::spies, SPY_READ, 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().
02229 { 02230 struct ast_frame *f = NULL; /* the return value */ 02231 int blah; 02232 int prestate; 02233 int count = 0; 02234 02235 /* this function is very long so make sure there is only one return 02236 * point at the end (there are only two exceptions to this). 02237 */ 02238 while(ast_channel_trylock(chan)) { 02239 if(count++ > 10) 02240 /*cannot goto done since the channel is not locked*/ 02241 return &ast_null_frame; 02242 usleep(1); 02243 } 02244 02245 if (chan->masq) { 02246 if (ast_do_masquerade(chan)) 02247 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02248 else 02249 f = &ast_null_frame; 02250 goto done; 02251 } 02252 02253 /* Stop if we're a zombie or need a soft hangup */ 02254 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02255 if (chan->generator) 02256 ast_deactivate_generator(chan); 02257 goto done; 02258 } 02259 prestate = chan->_state; 02260 02261 if (!ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF | AST_FLAG_IN_DTMF) && 02262 !ast_strlen_zero(chan->dtmfq) && 02263 (ast_tvzero(chan->dtmf_tv) || ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) > AST_MIN_DTMF_GAP) ) { 02264 /* We have DTMF that has been deferred. Return it now */ 02265 chan->dtmff.subclass = chan->dtmfq[0]; 02266 /* Drop first digit from the buffer */ 02267 memmove(chan->dtmfq, chan->dtmfq + 1, sizeof(chan->dtmfq) - 1); 02268 f = &chan->dtmff; 02269 if (ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02270 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02271 chan->dtmff.frametype = AST_FRAME_DTMF_END; 02272 } else { 02273 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); 02274 chan->dtmff.frametype = AST_FRAME_DTMF_BEGIN; 02275 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02276 chan->emulate_dtmf_digit = f->subclass; 02277 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02278 } 02279 chan->dtmf_tv = ast_tvnow(); 02280 goto done; 02281 } 02282 02283 /* Read and ignore anything on the alertpipe, but read only 02284 one sizeof(blah) per frame that we send from it */ 02285 if (chan->alertpipe[0] > -1) 02286 read(chan->alertpipe[0], &blah, sizeof(blah)); 02287 02288 #ifdef HAVE_ZAPTEL 02289 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02290 int res; 02291 02292 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02293 blah = -1; 02294 /* IF we can't get event, assume it's an expired as-per the old interface */ 02295 res = ioctl(chan->timingfd, ZT_GETEVENT, &blah); 02296 if (res) 02297 blah = ZT_EVENT_TIMER_EXPIRED; 02298 02299 if (blah == ZT_EVENT_TIMER_PING) { 02300 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02301 /* Acknowledge PONG unless we need it again */ 02302 if (ioctl(chan->timingfd, ZT_TIMERPONG, &blah)) { 02303 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02304 } 02305 } 02306 } else if (blah == ZT_EVENT_TIMER_EXPIRED) { 02307 ioctl(chan->timingfd, ZT_TIMERACK, &blah); 02308 if (chan->timingfunc) { 02309 chan->timingfunc(chan->timingdata); 02310 } else { 02311 blah = 0; 02312 ioctl(chan->timingfd, ZT_TIMERCONFIG, &blah); 02313 chan->timingdata = NULL; 02314 } 02315 ast_channel_unlock(chan); 02316 /* cannot 'goto done' because the channel is already unlocked */ 02317 return &ast_null_frame; 02318 } else 02319 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02320 } else 02321 #endif 02322 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02323 /* if the AST_GENERATOR_FD is set, call the generator with args 02324 * set to -1 so it can do whatever it needs to. 02325 */ 02326 void *tmp = chan->generatordata; 02327 chan->generatordata = NULL; /* reset to let ast_write get through */ 02328 chan->generator->generate(chan, tmp, -1, -1); 02329 chan->generatordata = tmp; 02330 f = &ast_null_frame; 02331 goto done; 02332 } 02333 02334 /* Check for pending read queue */ 02335 if (!AST_LIST_EMPTY(&chan->readq)) { 02336 f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list); 02337 /* Interpret hangup and return NULL */ 02338 /* XXX why not the same for frames from the channel ? */ 02339 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02340 ast_frfree(f); 02341 f = NULL; 02342 } 02343 } else { 02344 chan->blocker = pthread_self(); 02345 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02346 if (chan->tech->exception) 02347 f = chan->tech->exception(chan); 02348 else { 02349 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02350 f = &ast_null_frame; 02351 } 02352 /* Clear the exception flag */ 02353 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02354 } else if (chan->tech->read) 02355 f = chan->tech->read(chan); 02356 else 02357 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02358 } 02359 02360 if (f) { 02361 /* if the channel driver returned more than one frame, stuff the excess 02362 into the readq for the next ast_read call (note that we can safely assume 02363 that the readq is empty, because otherwise we would not have called into 02364 the channel driver and f would be only a single frame) 02365 */ 02366 if (AST_LIST_NEXT(f, frame_list)) { 02367 AST_LIST_HEAD_SET_NOLOCK(&chan->readq, AST_LIST_NEXT(f, frame_list)); 02368 AST_LIST_NEXT(f, frame_list) = NULL; 02369 } 02370 02371 switch (f->frametype) { 02372 case AST_FRAME_CONTROL: 02373 if (f->subclass == AST_CONTROL_ANSWER) { 02374 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02375 if (option_debug) 02376 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02377 ast_frfree(f); 02378 f = &ast_null_frame; 02379 } else if (prestate == AST_STATE_UP) { 02380 if (option_debug) 02381 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02382 ast_frfree(f); 02383 f = &ast_null_frame; 02384 } else { 02385 /* Answer the CDR */ 02386 ast_setstate(chan, AST_STATE_UP); 02387 if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore, 02388 to keep from throwing off the basic order of the universe, 02389 we will try to keep this cdr from getting posted. */ 02390 chan->cdr = ast_cdr_alloc(); 02391 ast_cdr_init(chan->cdr, chan); 02392 ast_cdr_start(chan->cdr); 02393 } 02394 02395 ast_cdr_answer(chan->cdr); 02396 } 02397 } 02398 break; 02399 case AST_FRAME_DTMF_END: 02400 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02401 /* Queue it up if DTMF is deffered, or if DTMF emulation is forced. 02402 * However, only let emulation be forced if the other end cares about BEGIN frames */ 02403 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || 02404 (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) ) { 02405 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) { 02406 ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name); 02407 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02408 } else 02409 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02410 ast_frfree(f); 02411 f = &ast_null_frame; 02412 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02413 if (!ast_tvzero(chan->dtmf_tv) && 02414 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02415 /* If it hasn't been long enough, defer this digit */ 02416 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) { 02417 ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name); 02418 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02419 } else 02420 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02421 ast_frfree(f); 02422 f = &ast_null_frame; 02423 } else { 02424 /* There was no begin, turn this into a begin and send the end later */ 02425 f->frametype = AST_FRAME_DTMF_BEGIN; 02426 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02427 chan->emulate_dtmf_digit = f->subclass; 02428 chan->dtmf_tv = ast_tvnow(); 02429 if (f->len) { 02430 if (f->len > AST_MIN_DTMF_DURATION) 02431 chan->emulate_dtmf_duration = f->len; 02432 else 02433 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02434 } else 02435 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02436 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02437 } 02438 } else { 02439 struct timeval now = ast_tvnow(); 02440 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02441 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02442 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02443 if (!f->len) 02444 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02445 } else if (!f->len) { 02446 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02447 f->len = AST_MIN_DTMF_DURATION; 02448 } 02449 if (f->len < AST_MIN_DTMF_DURATION) { 02450 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); 02451 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02452 chan->emulate_dtmf_digit = f->subclass; 02453 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02454 ast_frfree(f); 02455 f = &ast_null_frame; 02456 } else { 02457 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02458 chan->dtmf_tv = now; 02459 } 02460 } 02461 break; 02462 case AST_FRAME_DTMF_BEGIN: 02463 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02464 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY) || 02465 (!ast_tvzero(chan->dtmf_tv) && 02466 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02467 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02468 ast_frfree(f); 02469 f = &ast_null_frame; 02470 } else { 02471 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02472 chan->dtmf_tv = ast_tvnow(); 02473 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02474 } 02475 break; 02476 case AST_FRAME_NULL: 02477 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02478 struct timeval now = ast_tvnow(); 02479 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02480 chan->emulate_dtmf_duration = 0; 02481 ast_frfree(f); 02482 f = &chan->dtmff; 02483 f->frametype = AST_FRAME_DTMF_END; 02484 f->subclass = chan->emulate_dtmf_digit; 02485 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02486 chan->dtmf_tv = now; 02487 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02488 chan->emulate_dtmf_digit = 0; 02489 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02490 } 02491 } 02492 break; 02493 case AST_FRAME_VOICE: 02494 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02495 * is reached , because we want to make sure we pass at least one 02496 * voice frame through before starting the next digit, to ensure a gap 02497 * between DTMF digits. */ 02498 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02499 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02500 chan->emulate_dtmf_digit = 0; 02501 } 02502 02503 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02504 if (dropaudio) 02505 ast_read_generator_actions(chan, f); 02506 ast_frfree(f); 02507 f = &ast_null_frame; 02508 } 02509 02510 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02511 struct timeval now = ast_tvnow(); 02512 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02513 chan->emulate_dtmf_duration = 0; 02514 ast_frfree(f); 02515 f = &chan->dtmff; 02516 f->frametype = AST_FRAME_DTMF_END; 02517 f->subclass = chan->emulate_dtmf_digit; 02518 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02519 chan->dtmf_tv = now; 02520 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02521 } else { 02522 /* Drop voice frames while we're still in the middle of the digit */ 02523 ast_frfree(f); 02524 f = &ast_null_frame; 02525 } 02526 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02527 /* This frame can't be from the current native formats -- drop it on the 02528 floor */ 02529 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02530 chan->name, ast_getformatname(f->subclass), ast_getformatname(chan->nativeformats)); 02531 ast_frfree(f); 02532 f = &ast_null_frame; 02533 } else if ((f->frametype == AST_FRAME_VOICE)) { 02534 if (chan->spies) 02535 queue_frame_to_spies(chan, f, SPY_READ); 02536 02537 if (chan->monitor && chan->monitor->read_stream ) { 02538 /* XXX what does this do ? */ 02539 #ifndef MONITOR_CONSTANT_DELAY 02540 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02541 if (jump >= 0) { 02542 jump = chan->outsmpl - chan->insmpl; 02543 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02544 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02545 chan->insmpl += jump + f->samples; 02546 } else 02547 chan->insmpl+= f->samples; 02548 #else 02549 int jump = chan->outsmpl - chan->insmpl; 02550 if (jump - MONITOR_DELAY >= 0) { 02551 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02552 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02553 chan->insmpl += jump; 02554 } else 02555 chan->insmpl += f->samples; 02556 #endif 02557 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02558 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02559 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02560 } 02561 } 02562 02563 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) 02564 f = &ast_null_frame; 02565 02566 /* Run generator sitting on the line if timing device not available 02567 * and synchronous generation of outgoing frames is necessary */ 02568 ast_read_generator_actions(chan, f); 02569 } 02570 default: 02571 /* Just pass it on! */ 02572 break; 02573 } 02574 } else { 02575 /* Make sure we always return NULL in the future */ 02576 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02577 if (chan->generator) 02578 ast_deactivate_generator(chan); 02579 /* End the CDR if appropriate */ 02580 if (chan->cdr) 02581 ast_cdr_end(chan->cdr); 02582 } 02583 02584 /* High bit prints debugging */ 02585 if (chan->fin & DEBUGCHAN_FLAG) 02586 ast_frame_dump(chan->name, f, "<<"); 02587 chan->fin = FRAMECOUNT_INC(chan->fin); 02588 02589 done: 02590 ast_channel_unlock(chan); 02591 return f; 02592 }
struct ast_channel* __ast_request_and_dial | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int | timeout, | |||
int * | outstate, | |||
int | callingpres, | |||
const char * | cid_num, | |||
const char * | cid_name, | |||
struct outgoing_helper * | oh, | |||
char * | uniqueid | |||
) | [read] |
Definition at line 3128 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, 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_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FRAME_CONTROL, ast_frfree, ast_hangup(), ast_log(), ast_read(), ast_request_with_uniqueid(), ast_set_callerid(), ast_set_variables(), AST_STATE_UP, ast_strlen_zero(), ast_waitfor(), ast_channel::cdr, ast_channel::cid, outgoing_helper::cid_name, outgoing_helper::cid_num, ast_callerid::cid_pres, ast_channel::context, outgoing_helper::context, ast_channel::exten, outgoing_helper::exten, f, ast_frame::frametype, ast_channel::hangupcause, LOG_NOTICE, outgoing_helper::parent_channel, ast_channel::priority, outgoing_helper::priority, ast_frame::subclass, and outgoing_helper::vars.
Referenced by ast_pbx_outgoing_app2(), ast_pbx_outgoing_exten2(), ast_request_and_dial(), and parkandannounce_exec().
03129 { 03130 int dummy_outstate; 03131 int cause = 0; 03132 struct ast_channel *chan; 03133 int res = 0; 03134 03135 if (outstate) 03136 *outstate = 0; 03137 else 03138 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 03139 03140 chan = ast_request_with_uniqueid(type, format, data, &cause, uniqueid); 03141 if (!chan) { 03142 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 03143 /* compute error and return */ 03144 if (cause == AST_CAUSE_BUSY) 03145 *outstate = AST_CONTROL_BUSY; 03146 else if (cause == AST_CAUSE_CONGESTION) 03147 *outstate = AST_CONTROL_CONGESTION; 03148 return NULL; 03149 } 03150 03151 if (oh) { 03152 if (oh->vars) 03153 ast_set_variables(chan, oh->vars); 03154 /* XXX why is this necessary, for the parent_channel perhaps ? */ 03155 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 03156 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 03157 if (oh->parent_channel) 03158 ast_channel_inherit_variables(oh->parent_channel, chan); 03159 if (oh->account) 03160 ast_cdr_setaccount(chan, oh->account); 03161 } 03162 ast_set_callerid(chan, cid_num, cid_name, cid_num); 03163 chan->cid.cid_pres = callingpres; 03164 03165 03166 if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore, 03167 to keep from throwing off the basic order of the universe, 03168 we will try to keep this cdr from getting posted. */ 03169 chan->cdr = ast_cdr_alloc(); 03170 ast_cdr_init(chan->cdr, chan); 03171 ast_cdr_start(chan->cdr); 03172 } 03173 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 03174 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 03175 } else { 03176 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 03177 while (timeout && chan->_state != AST_STATE_UP) { 03178 struct ast_frame *f; 03179 res = ast_waitfor(chan, timeout); 03180 if (res <= 0) /* error, timeout, or done */ 03181 break; 03182 if (timeout > -1) 03183 timeout = res; 03184 f = ast_read(chan); 03185 if (!f) { 03186 *outstate = AST_CONTROL_HANGUP; 03187 res = 0; 03188 break; 03189 } 03190 if (f->frametype == AST_FRAME_CONTROL) { 03191 switch (f->subclass) { 03192 case AST_CONTROL_RINGING: /* record but keep going */ 03193 *outstate = f->subclass; 03194 break; 03195 03196 case AST_CONTROL_BUSY: 03197 case AST_CONTROL_CONGESTION: 03198 case AST_CONTROL_ANSWER: 03199 *outstate = f->subclass; 03200 timeout = 0; /* trick to force exit from the while() */ 03201 break; 03202 03203 /* Ignore these */ 03204 case AST_CONTROL_PROGRESS: 03205 case AST_CONTROL_PROCEEDING: 03206 case AST_CONTROL_HOLD: 03207 case AST_CONTROL_UNHOLD: 03208 case AST_CONTROL_VIDUPDATE: 03209 case -1: /* Ignore -- just stopping indications */ 03210 break; 03211 03212 default: 03213 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 03214 } 03215 } 03216 ast_frfree(f); 03217 } 03218 } 03219 03220 /* Final fixups */ 03221 if (oh) { 03222 if (!ast_strlen_zero(oh->context)) 03223 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 03224 if (!ast_strlen_zero(oh->exten)) 03225 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 03226 if (oh->priority) 03227 chan->priority = oh->priority; 03228 } 03229 if (chan->_state == AST_STATE_UP) 03230 *outstate = AST_CONTROL_ANSWER; 03231 03232 if (res <= 0) { 03233 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 03234 ast_cdr_init(chan->cdr, chan); 03235 if (chan->cdr) { 03236 char tmp[256]; 03237 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 03238 ast_cdr_setapp(chan->cdr,"Dial",tmp); 03239 ast_cdr_update(chan); 03240 ast_cdr_start(chan->cdr); 03241 ast_cdr_end(chan->cdr); 03242 /* If the cause wasn't handled properly */ 03243 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 03244 ast_cdr_failed(chan->cdr); 03245 } 03246 ast_hangup(chan); 03247 chan = NULL; 03248 } 03249 return chan; 03250 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1903 of file channel.c.
References ast_generator::alloc, ast_channel_lock, ast_channel_unlock, ast_prod(), ast_settimeout(), 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(), milliwatt_exec(), and sms_exec().
01904 { 01905 int res = 0; 01906 01907 ast_channel_lock(chan); 01908 01909 if (chan->generatordata) { 01910 if (chan->generator && chan->generator->release) 01911 chan->generator->release(chan, chan->generatordata); 01912 chan->generatordata = NULL; 01913 } 01914 01915 ast_prod(chan); 01916 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01917 res = -1; 01918 } 01919 01920 if (!res) { 01921 ast_settimeout(chan, 160, generator_force, chan); 01922 chan->generator = gen; 01923 } 01924 01925 ast_channel_unlock(chan); 01926 01927 return res; 01928 }
int ast_active_channels | ( | void | ) |
returns number of active/allocated channels
Returns number of active/allocated channels
Definition at line 462 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, and channels.
Referenced by quit_handler().
00463 { 00464 struct ast_channel *c; 00465 int cnt = 0; 00466 AST_LIST_LOCK(&channels); 00467 AST_LIST_TRAVERSE(&channels, c, chan_list) 00468 cnt++; 00469 AST_LIST_UNLOCK(&channels); 00470 return cnt; 00471 }
char* ast_alloc_uniqueid | ( | void | ) |
Create a uniqueid.
Definition at line 728 of file channel.c.
References ast_config_AST_SYSTEM_NAME, ast_mainpid, malloc, and uniqueint.
Referenced by action_originate().
00728 { 00729 char *uniqueid; 00730 uniqueid = malloc(64); 00731 if (!uniqueid) return NULL; 00732 snprintf(uniqueid, 63, "%s-%d-%li.%d", ast_config_AST_SYSTEM_NAME, ast_mainpid, (long)time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00733 return uniqueid; 00734 }
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 1835 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(), agi_exec_full(), alarmreceiver_exec(), app_exec(), ast_autoanswer_login(), ast_bridge_call(), ast_control_streamfile(), ast_pickup_call(), ast_retrieve_call(), auth_exec(), autoanswer_exec(), background_detect_exec(), builtin_parkcall(), common_exec(), conf_exec(), count_exec(), dictate_exec(), directory_exec(), disa_exec(), features_answer(), handle_answer(), ices_exec(), milliwatt_exec(), my_pickup_call(), my_pickup_channel(), park_call_exec(), park_exec(), pbx_builtin_answer(), pbx_builtin_background(), pbx_builtin_saycharacters(), pbx_builtin_saydigits(), pbx_builtin_saynumber(), pbx_builtin_sayphonetic(), pickup_do(), playback_exec(), privacy_exec(), read_exec(), record_exec(), rpt_exec(), run_station(), sayunixtime_exec(), send_waveform_to_channel(), skel_exec(), sla_handle_dial_state_event(), sla_station_exec(), sms_exec(), speech_background(), testclient_exec(), testserver_exec(), vm_exec(), vm_execmain(), waitforsilence_exec(), zapateller_exec(), and zapras_exec().
01836 { 01837 int res = 0; 01838 ast_channel_lock(chan); 01839 /* You can't answer an outbound call */ 01840 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01841 ast_channel_unlock(chan); 01842 return 0; 01843 } 01844 /* Stop if we're a zombie or need a soft hangup */ 01845 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01846 ast_channel_unlock(chan); 01847 return -1; 01848 } 01849 switch(chan->_state) { 01850 case AST_STATE_RINGING: 01851 case AST_STATE_RING: 01852 if (chan->tech->answer) 01853 res = chan->tech->answer(chan); 01854 ast_setstate(chan, AST_STATE_UP); 01855 ast_cdr_answer(chan->cdr); 01856 break; 01857 case AST_STATE_UP: 01858 ast_cdr_answer(chan->cdr); 01859 break; 01860 default: 01861 break; 01862 } 01863 chan->visible_indication = 0; 01864 ast_channel_unlock(chan); 01865 return res; 01866 }
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 449 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_softhangup(), AST_SOFTHANGUP_SHUTDOWN, channels, and shutting_down.
Referenced by quit_handler().
00450 { 00451 struct ast_channel *c; 00452 shutting_down = 1; 00453 if (hangup) { 00454 AST_LIST_LOCK(&channels); 00455 AST_LIST_TRAVERSE(&channels, c, chan_list) 00456 ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN); 00457 AST_LIST_UNLOCK(&channels); 00458 } 00459 }
int ast_best_codec | ( | int | fmts | ) |
Pick the best audio codec.
Pick the best codec
Okay, ulaw is used by all telephony equipment, so start with it
Unless of course, you're a silly European, so then prefer ALAW
G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority
Okay, well, signed linear is easy to translate into other stuff
G.726 is standard ADPCM, in RFC3551 packing order
G.726 is standard ADPCM, in AAL2 packing order
ADPCM has great sound quality and is still pretty easy to translate
Okay, we're down to vocoders now, so pick GSM because it's small and easier to translate and sounds pretty good
iLBC is not too bad
Speex is free, but computationally more expensive than GSM
Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough to use it
G.729a is faster than 723 and slightly less expensive
Down to G.723.1 which is proprietary but at least designed for voice
Definition at line 674 of file channel.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_AUDIO_MASK, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_log(), LOG_WARNING, and prefs.
Referenced by __login_exec(), __oh323_new(), agent_call(), ast_codec_choose(), ast_iax2_new(), 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().
00675 { 00676 /* This just our opinion, expressed in code. We are asked to choose 00677 the best codec to use, given no information */ 00678 int x; 00679 static int prefs[] = 00680 { 00681 /*! Okay, ulaw is used by all telephony equipment, so start with it */ 00682 AST_FORMAT_ULAW, 00683 /*! Unless of course, you're a silly European, so then prefer ALAW */ 00684 AST_FORMAT_ALAW, 00685 /*! G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority */ 00686 AST_FORMAT_G722, 00687 /*! Okay, well, signed linear is easy to translate into other stuff */ 00688 AST_FORMAT_SLINEAR, 00689 /*! G.726 is standard ADPCM, in RFC3551 packing order */ 00690 AST_FORMAT_G726, 00691 /*! G.726 is standard ADPCM, in AAL2 packing order */ 00692 AST_FORMAT_G726_AAL2, 00693 /*! ADPCM has great sound quality and is still pretty easy to translate */ 00694 AST_FORMAT_ADPCM, 00695 /*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to 00696 translate and sounds pretty good */ 00697 AST_FORMAT_GSM, 00698 /*! iLBC is not too bad */ 00699 AST_FORMAT_ILBC, 00700 /*! Speex is free, but computationally more expensive than GSM */ 00701 AST_FORMAT_SPEEX, 00702 /*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough 00703 to use it */ 00704 AST_FORMAT_LPC10, 00705 /*! G.729a is faster than 723 and slightly less expensive */ 00706 AST_FORMAT_G729A, 00707 /*! Down to G.723.1 which is proprietary but at least designed for voice */ 00708 AST_FORMAT_G723_1, 00709 }; 00710 00711 /* Strip out video */ 00712 fmts &= AST_FORMAT_AUDIO_MASK; 00713 00714 /* Find the first preferred codec in the format given */ 00715 for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++) 00716 if (fmts & prefs[x]) 00717 return prefs[x]; 00718 ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts); 00719 return 0; 00720 }
struct ast_channel* ast_bridged_channel | ( | struct ast_channel * | chan | ) | [read] |
Find bridged channel.
chan | Current channel |
Definition at line 3999 of file channel.c.
References ast_channel::_bridge, ast_channel_tech::bridged_channel, and ast_channel::tech.
Referenced by __zt_exception(), agents_show(), agents_show_online(), ast_channel_masquerade(), attempt_transfer(), cb_events(), 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().
04000 { 04001 struct ast_channel *bridged; 04002 bridged = chan->_bridge; 04003 if (bridged && bridged->tech->bridged_channel) 04004 bridged = bridged->tech->bridged_channel(chan, bridged); 04005 return bridged; 04006 }
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 3312 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(), rpt_exec(), and wait_for_answer().
03313 { 03314 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03315 If the remote end does not answer within the timeout, then do NOT hang up, but 03316 return anyway. */ 03317 int res = -1; 03318 /* Stop if we're a zombie or need a soft hangup */ 03319 ast_channel_lock(chan); 03320 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03321 if (chan->tech->call) 03322 res = chan->tech->call(chan, addr, timeout); 03323 ast_set_flag(chan, AST_FLAG_OUTGOING); 03324 } 03325 ast_channel_unlock(chan); 03326 return res; 03327 }
void ast_cancel_shutdown | ( | void | ) |
Cancel a shutdown in progress.
Cancels an existing shutdown and returns to normal operation
Definition at line 474 of file channel.c.
References shutting_down.
Referenced by handle_abort_halt().
00475 { 00476 shutting_down = 0; 00477 }
const char* ast_cause2str | ( | int | state | ) |
Gives the string form of a given hangup cause.
Gives the string form of a given cause code
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 594 of file channel.c.
References causes, and ast_cause::desc.
Referenced by __transmit_response(), ast_do_masquerade(), ast_hangup(), findmeexec(), sip_hangup(), and transmit_request_with_auth().
00595 { 00596 int x; 00597 00598 for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) { 00599 if (causes[x].cause == cause) 00600 return causes[x].desc; 00601 } 00602 00603 return "Unknown"; 00604 }
void ast_change_name | ( | struct ast_channel * | chan, | |
char * | newname | |||
) |
Change channel name.
Definition at line 3560 of file channel.c.
References ast_string_field_set, EVENT_FLAG_CALL, manager_event(), and name.
03561 { 03562 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03563 ast_string_field_set(chan, name, newname); 03564 }
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, | |||
... | ||||
) | [read] |
Create a new channel structure.
Create a channel structure.
Definition at line 737 of file channel.c.
References ast_channel::_state, accountcode, ast_channel::alertpipe, ast_channel::amaflags, AST_ALERT_FD, ast_calloc, ast_cdr_alloc(), ast_cdr_init(), ast_cdr_start(), ast_config_AST_SYSTEM_NAME, ast_default_accountcode, ast_default_amaflags, AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_UNLOCK, ast_log(), ast_mainpid, AST_MAX_FDS, ast_mutex_init(), ast_state2str(), ast_strdup, ast_string_field_build, ast_string_field_build_va, ast_string_field_free_memory, ast_string_field_init, ast_string_field_set, ast_strlen_zero(), AST_TIMING_FD, ast_channel::cdr, channels, ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, ast_channel::context, defaultlanguage, EVENT_FLAG_CALL, ast_channel::exten, ast_channel::fds, ast_channel::fin, ast_channel::flags, ast_channel::fout, free, global_fin, global_fout, HAVE_ZAPTEL, language, ast_channel::lock, LOG_WARNING, manager_event(), name, null_tech, ast_channel::priority, S_OR, ast_channel::sched, sched_context_create(), sched_context_destroy(), shutting_down, ast_channel::streamid, ast_channel::tech, ast_channel::timingfd, uniqueint, and ast_channel::varshead.
Referenced by __oh323_new(), acf_odbc_read(), acf_odbc_write(), agent_new(), alsa_new(), ast_async_goto(), ast_iax2_new(), ast_masq_autoanswer_login(), ast_masq_hold_call(), ast_masq_park_call(), ast_pbx_outgoing_cdr_failed(), ast_pbx_outgoing_exten2(), 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().
00738 { 00739 struct ast_channel *tmp; 00740 int x; 00741 int flags; 00742 struct varshead *headp; 00743 va_list ap1, ap2; 00744 00745 /* If shutting down, don't allocate any new channels */ 00746 if (shutting_down) { 00747 ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n"); 00748 return NULL; 00749 } 00750 00751 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) 00752 return NULL; 00753 00754 if (!(tmp->sched = sched_context_create())) { 00755 ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n"); 00756 free(tmp); 00757 return NULL; 00758 } 00759 00760 if ((ast_string_field_init(tmp, 128))) { 00761 sched_context_destroy(tmp->sched); 00762 free(tmp); 00763 return NULL; 00764 } 00765 00766 /* Don't bother initializing the last two FD here, because they 00767 will *always* be set just a few lines down (AST_TIMING_FD, 00768 AST_ALERT_FD). */ 00769 for (x = 0; x < AST_MAX_FDS - 2; x++) 00770 tmp->fds[x] = -1; 00771 00772 #ifdef HAVE_ZAPTEL 00773 tmp->timingfd = open("/dev/zap/timer", O_RDWR); 00774 if (tmp->timingfd > -1) { 00775 /* Check if timing interface supports new 00776 ping/pong scheme */ 00777 flags = 1; 00778 if (!ioctl(tmp->timingfd, ZT_TIMERPONG, &flags)) 00779 needqueue = 0; 00780 } 00781 #else 00782 tmp->timingfd = -1; 00783 #endif 00784 00785 if (needqueue) { 00786 if (pipe(tmp->alertpipe)) { 00787 ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe!\n"); 00788 #ifdef HAVE_ZAPTEL 00789 if (tmp->timingfd > -1) 00790 close(tmp->timingfd); 00791 #endif 00792 sched_context_destroy(tmp->sched); 00793 ast_string_field_free_memory(tmp); 00794 free(tmp); 00795 return NULL; 00796 } else { 00797 flags = fcntl(tmp->alertpipe[0], F_GETFL); 00798 fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK); 00799 flags = fcntl(tmp->alertpipe[1], F_GETFL); 00800 fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK); 00801 } 00802 } else /* Make sure we've got it done right if they don't */ 00803 tmp->alertpipe[0] = tmp->alertpipe[1] = -1; 00804 00805 /* Always watch the alertpipe */ 00806 tmp->fds[AST_ALERT_FD] = tmp->alertpipe[0]; 00807 /* And timing pipe */ 00808 tmp->fds[AST_TIMING_FD] = tmp->timingfd; 00809 ast_string_field_set(tmp, name, "**Unknown**"); 00810 00811 /* Initial state */ 00812 tmp->_state = state; 00813 00814 tmp->streamid = -1; 00815 00816 tmp->fin = global_fin; 00817 tmp->fout = global_fout; 00818 00819 if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) { 00820 ast_string_field_build(tmp, uniqueid, "%d-%li.%d", ast_mainpid, (long) time(NULL), 00821 ast_atomic_fetchadd_int(&uniqueint, 1)); 00822 } else { 00823 ast_string_field_build(tmp, uniqueid, "%s-%d-%li.%d", ast_config_AST_SYSTEM_NAME, ast_mainpid, 00824 (long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00825 } 00826 00827 tmp->cid.cid_name = ast_strdup(cid_name); 00828 tmp->cid.cid_num = ast_strdup(cid_num); 00829 00830 if (!ast_strlen_zero(name_fmt)) { 00831 /* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call. 00832 * And they all use slightly different formats for their name string. 00833 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here. 00834 * This means, that the stringfields must have a routine that takes the va_lists directly, and 00835 * uses them to build the string, instead of forming the va_lists internally from the vararg ... list. 00836 * This new function was written so this can be accomplished. 00837 */ 00838 va_start(ap1, name_fmt); 00839 va_start(ap2, name_fmt); 00840 ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2); 00841 va_end(ap1); 00842 va_end(ap2); 00843 } 00844 00845 /* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */ 00846 00847 /* These 4 variables need to be set up for the cdr_init() to work right */ 00848 if (amaflag) 00849 tmp->amaflags = amaflag; 00850 else 00851 tmp->amaflags = ast_default_amaflags; 00852 00853 if (!ast_strlen_zero(acctcode)) 00854 ast_string_field_set(tmp, accountcode, acctcode); 00855 else 00856 ast_string_field_set(tmp, accountcode, ast_default_accountcode); 00857 00858 if (!ast_strlen_zero(context)) 00859 ast_copy_string(tmp->context, context, sizeof(tmp->context)); 00860 else 00861 strcpy(tmp->context, "default"); 00862 00863 if (!ast_strlen_zero(exten)) 00864 ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); 00865 else 00866 strcpy(tmp->exten, "s"); 00867 00868 tmp->priority = 1; 00869 00870 tmp->cdr = ast_cdr_alloc(); 00871 ast_cdr_init(tmp->cdr, tmp); 00872 ast_cdr_start(tmp->cdr); 00873 00874 headp = &tmp->varshead; 00875 AST_LIST_HEAD_INIT_NOLOCK(headp); 00876 00877 ast_mutex_init(&tmp->lock); 00878 00879 AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores); 00880 00881 ast_string_field_set(tmp, language, defaultlanguage); 00882 00883 tmp->tech = &null_tech; 00884 00885 AST_LIST_LOCK(&channels); 00886 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00887 AST_LIST_UNLOCK(&channels); 00888 00889 /*\!note 00890 * and now, since the channel structure is built, and has its name, let's 00891 * call the manager event generator with this Newchannel event. This is the 00892 * proper and correct place to make this call, but you sure do have to pass 00893 * a lot of data into this func to do it here! 00894 */ 00895 if (!ast_strlen_zero(name_fmt)) { 00896 manager_event(EVENT_FLAG_CALL, "Newchannel", 00897 "Channel: %s\r\n" 00898 "State: %s\r\n" 00899 "CallerIDNum: %s\r\n" 00900 "CallerIDName: %s\r\n" 00901 "Uniqueid: %s\r\n", 00902 tmp->name, ast_state2str(state), 00903 S_OR(cid_num, "<unknown>"), 00904 S_OR(cid_name, "<unknown>"), 00905 tmp->uniqueid); 00906 } 00907 00908 return tmp; 00909 }
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 4188 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_FEATURE_PLAY_WARNING, AST_FEATURE_REDIRECT, AST_FLAG_END_DTMF_ONLY, AST_FLAG_NBRIDGE, AST_FLAG_ZOMBIE, ast_generic_bridge(), ast_log(), ast_set_flag, AST_SOFTHANGUP_UNBRIDGE, ast_strlen_zero(), ast_test_flag, ast_tvadd(), ast_tvsub(), ast_verbose(), ast_channel_tech::bridge, bridge_playfile(), ast_channel::cid, ast_callerid::cid_num, ast_bridge_config::end_sound, EVENT_FLAG_CALL, ast_bridge_config::feature_timer, ast_bridge_config::features_callee, ast_bridge_config::features_caller, ast_bridge_config::firstpass, ast_bridge_config::flags, ast_channel::generator, IS_DIGITAL, LOG_DEBUG, LOG_WARNING, 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_bridge_config::play_warning, ast_channel::readformat, ast_channel_tech::send_digit_begin, ast_channel::spies, ast_bridge_config::start_sound, ast_bridge_config::start_time, t, ast_channel::tech, ast_bridge_config::timelimit, ast_channel::transfercapability, VERBOSE_PREFIX_3, ast_bridge_config::warning_freq, ast_bridge_config::warning_sound, and ast_channel::writeformat.
Referenced by ast_bridge_call().
04190 { 04191 struct ast_channel *who = NULL; 04192 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04193 int nativefailed=0; 04194 int firstpass; 04195 int o0nativeformats; 04196 int o1nativeformats; 04197 long time_left_ms=0; 04198 struct timeval nexteventts = { 0, }; 04199 char caller_warning = 0; 04200 char callee_warning = 0; 04201 04202 if (c0->_bridge) { 04203 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04204 c0->name, c0->_bridge->name); 04205 return -1; 04206 } 04207 if (c1->_bridge) { 04208 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04209 c1->name, c1->_bridge->name); 04210 return -1; 04211 } 04212 04213 if (IS_DIGITAL(c0->transfercapability) || IS_DIGITAL(c1->transfercapability)) { 04214 config->flags = 0; 04215 } 04216 04217 /* Stop if we're a zombie or need a soft hangup */ 04218 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04219 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 04220 return -1; 04221 04222 *fo = NULL; 04223 firstpass = config->firstpass; 04224 config->firstpass = 0; 04225 04226 if (ast_tvzero(config->start_time)) 04227 config->start_time = ast_tvnow(); 04228 time_left_ms = config->timelimit; 04229 04230 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 04231 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 04232 04233 if (config->start_sound && firstpass) { 04234 if (caller_warning) 04235 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 04236 if (callee_warning) 04237 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 04238 } 04239 04240 /* Keep track of bridge */ 04241 c0->_bridge = c1; 04242 c1->_bridge = c0; 04243 04244 /* \todo XXX here should check that cid_num is not NULL */ 04245 manager_event(EVENT_FLAG_CALL, "Link", 04246 "Channel1: %s\r\n" 04247 "Channel2: %s\r\n" 04248 "Uniqueid1: %s\r\n" 04249 "Uniqueid2: %s\r\n" 04250 "CallerID1: %s\r\n" 04251 "CallerID2: %s\r\n", 04252 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04253 04254 o0nativeformats = c0->nativeformats; 04255 o1nativeformats = c1->nativeformats; 04256 04257 if (config->feature_timer) { 04258 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 04259 } else if (config->timelimit) { 04260 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04261 if (caller_warning || callee_warning) 04262 nexteventts = ast_tvsub(nexteventts, ast_samp2tv(config->play_warning, 1000)); 04263 } 04264 04265 if (!c0->tech->send_digit_begin) 04266 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 04267 if (!c1->tech->send_digit_begin) 04268 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 04269 04270 for (/* ever */;;) { 04271 struct timeval now = { 0, }; 04272 int to; 04273 04274 to = -1; 04275 04276 if (!ast_tvzero(nexteventts)) { 04277 now = ast_tvnow(); 04278 to = ast_tvdiff_ms(nexteventts, now); 04279 if (to <= 0) { 04280 if (!config->timelimit) { 04281 res = AST_BRIDGE_COMPLETE; 04282 break; 04283 } 04284 to = 0; 04285 } 04286 } 04287 04288 if (config->timelimit) { 04289 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04290 if (time_left_ms < to) 04291 to = time_left_ms; 04292 04293 if (time_left_ms <= 0) { 04294 if (caller_warning && config->end_sound) 04295 bridge_playfile(c0, c1, config->end_sound, 0); 04296 if (callee_warning && config->end_sound) 04297 bridge_playfile(c1, c0, config->end_sound, 0); 04298 *fo = NULL; 04299 if (who) 04300 *rc = who; 04301 res = 0; 04302 break; 04303 } 04304 04305 if (!to) { 04306 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning) { 04307 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04308 if (caller_warning) 04309 bridge_playfile(c0, c1, config->warning_sound, t); 04310 if (callee_warning) 04311 bridge_playfile(c1, c0, config->warning_sound, t); 04312 } 04313 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04314 nexteventts = ast_tvadd(nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04315 else 04316 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04317 } 04318 } 04319 04320 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04321 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04322 c0->_softhangup = 0; 04323 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04324 c1->_softhangup = 0; 04325 c0->_bridge = c1; 04326 c1->_bridge = c0; 04327 if (option_debug) 04328 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04329 continue; 04330 } 04331 04332 /* Stop if we're a zombie or need a soft hangup */ 04333 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04334 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04335 *fo = NULL; 04336 if (who) 04337 *rc = who; 04338 res = 0; 04339 if (option_debug) 04340 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", 04341 c0->name, c1->name, 04342 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04343 ast_check_hangup(c0) ? "Yes" : "No", 04344 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04345 ast_check_hangup(c1) ? "Yes" : "No"); 04346 break; 04347 } 04348 04349 /* See if the BRIDGEPEER variable needs to be updated */ 04350 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) 04351 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name); 04352 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) 04353 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name); 04354 04355 if (c0->tech->bridge && 04356 (config->timelimit == 0) && 04357 (c0->tech->bridge == c1->tech->bridge) && 04358 !nativefailed && !c0->monitor && !c1->monitor && 04359 !c0->spies && !c1->spies && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04360 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04361 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04362 /* Looks like they share a bridge method and nothing else is in the way */ 04363 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04364 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04365 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04366 /* \todo XXX here should check that cid_num is not NULL */ 04367 manager_event(EVENT_FLAG_CALL, "Unlink", 04368 "Channel1: %s\r\n" 04369 "Channel2: %s\r\n" 04370 "Uniqueid1: %s\r\n" 04371 "Uniqueid2: %s\r\n" 04372 "CallerID1: %s\r\n" 04373 "CallerID2: %s\r\n", 04374 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04375 if (option_debug) 04376 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04377 04378 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04379 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04380 04381 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04382 continue; 04383 04384 c0->_bridge = NULL; 04385 c1->_bridge = NULL; 04386 04387 return res; 04388 } else { 04389 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04390 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04391 } 04392 switch (res) { 04393 case AST_BRIDGE_RETRY: 04394 continue; 04395 default: 04396 if (option_verbose > 2) 04397 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04398 c0->name, c1->name); 04399 /* fallthrough */ 04400 case AST_BRIDGE_FAILED_NOWARN: 04401 nativefailed++; 04402 break; 04403 } 04404 } 04405 04406 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04407 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04408 !(c0->generator || c1->generator)) { 04409 if (ast_channel_make_compatible(c0, c1)) { 04410 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04411 /* \todo XXX here should check that cid_num is not NULL */ 04412 manager_event(EVENT_FLAG_CALL, "Unlink", 04413 "Channel1: %s\r\n" 04414 "Channel2: %s\r\n" 04415 "Uniqueid1: %s\r\n" 04416 "Uniqueid2: %s\r\n" 04417 "CallerID1: %s\r\n" 04418 "CallerID2: %s\r\n", 04419 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04420 return AST_BRIDGE_FAILED; 04421 } 04422 o0nativeformats = c0->nativeformats; 04423 o1nativeformats = c1->nativeformats; 04424 } 04425 res = ast_generic_bridge(c0, c1, config, fo, rc, nexteventts); 04426 if (res != AST_BRIDGE_RETRY) 04427 break; 04428 } 04429 04430 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04431 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04432 04433 c0->_bridge = NULL; 04434 c1->_bridge = NULL; 04435 04436 /* \todo XXX here should check that cid_num is not NULL */ 04437 manager_event(EVENT_FLAG_CALL, "Unlink", 04438 "Channel1: %s\r\n" 04439 "Channel2: %s\r\n" 04440 "Uniqueid1: %s\r\n" 04441 "Uniqueid2: %s\r\n" 04442 "CallerID1: %s\r\n" 04443 "CallerID2: %s\r\n", 04444 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04445 if (option_debug) 04446 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04447 04448 return res; 04449 }
int ast_channel_cmpwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Compare a offset with when to hangup channel.
Compare a offset with the settings of when to hang a channel up.
Definition at line 494 of file channel.c.
References ast_channel::whentohangup.
00495 { 00496 time_t whentohangup; 00497 00498 if (chan->whentohangup == 0) { 00499 return (offset == 0) ? 0 : -1; 00500 } else { 00501 if (offset == 0) /* XXX why is this special ? */ 00502 return (1); 00503 else { 00504 whentohangup = offset + time (NULL); 00505 if (chan->whentohangup < whentohangup) 00506 return (1); 00507 else if (chan->whentohangup == whentohangup) 00508 return (0); 00509 else 00510 return (-1); 00511 } 00512 } 00513 }
int ast_channel_datastore_add | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Add a datastore to a channel.
Definition at line 1363 of file channel.c.
References AST_LIST_INSERT_HEAD.
Referenced by speech_create(), and try_calling().
01364 { 01365 int res = 0; 01366 01367 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01368 01369 return res; 01370 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) | [read] |
Create a channel datastore structure.
Definition at line 1302 of file channel.c.
References ast_calloc, ast_strdup, ast_datastore::info, and ast_datastore::uid.
Referenced by ast_channel_datastore_inherit(), speech_create(), and try_calling().
01303 { 01304 struct ast_datastore *datastore = NULL; 01305 01306 /* Make sure we at least have type so we can identify this */ 01307 if (info == NULL) { 01308 return NULL; 01309 } 01310 01311 /* Allocate memory for datastore and clear it */ 01312 datastore = ast_calloc(1, sizeof(*datastore)); 01313 if (datastore == NULL) { 01314 return NULL; 01315 } 01316 01317 datastore->info = info; 01318 01319 datastore->uid = ast_strdup(uid); 01320 01321 return datastore; 01322 }
struct ast_datastore* ast_channel_datastore_find | ( | struct ast_channel * | chan, | |
const struct ast_datastore_info * | info, | |||
char * | uid | |||
) | [read] |
Find a datastore on a channel.
Definition at line 1390 of file channel.c.
References AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_datastore::info, and ast_datastore::uid.
Referenced by find_speech(), speech_background(), speech_destroy(), and try_calling().
01391 { 01392 struct ast_datastore *datastore = NULL; 01393 01394 if (info == NULL) 01395 return NULL; 01396 01397 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01398 if (datastore->info == info) { 01399 if (uid != NULL && datastore->uid != NULL) { 01400 if (!strcasecmp(uid, datastore->uid)) { 01401 /* Matched by type AND uid */ 01402 break; 01403 } 01404 } else { 01405 /* Matched by type at least */ 01406 break; 01407 } 01408 } 01409 } 01410 AST_LIST_TRAVERSE_SAFE_END 01411 01412 return datastore; 01413 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1324 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(), and try_calling().
01325 { 01326 int res = 0; 01327 01328 /* Using the destroy function (if present) destroy the data */ 01329 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01330 datastore->info->destroy(datastore->data); 01331 datastore->data = NULL; 01332 } 01333 01334 /* Free allocated UID memory */ 01335 if (datastore->uid != NULL) { 01336 free(datastore->uid); 01337 datastore->uid = NULL; 01338 } 01339 01340 /* Finally free memory used by ourselves */ 01341 free(datastore); 01342 01343 return res; 01344 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1346 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().
01347 { 01348 struct ast_datastore *datastore = NULL, *datastore2; 01349 01350 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01351 if (datastore->inheritance > 0) { 01352 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01353 if (datastore2) { 01354 datastore2->data = datastore->info->duplicate(datastore->data); 01355 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01356 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01357 } 01358 } 01359 } 01360 return 0; 01361 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1372 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, and AST_LIST_TRAVERSE_SAFE_END.
Referenced by speech_background(), speech_destroy(), and try_calling().
01373 { 01374 struct ast_datastore *datastore2 = NULL; 01375 int res = -1; 01376 01377 /* Find our position and remove ourselves */ 01378 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01379 if (datastore2 == datastore) { 01380 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01381 res = 0; 01382 break; 01383 } 01384 } 01385 AST_LIST_TRAVERSE_SAFE_END 01386 01387 return res; 01388 }
int ast_channel_defer_dtmf | ( | struct ast_channel * | chan | ) |
Set defer DTMF flag on channel.
Defers DTMF
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 1003 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
01004 { 01005 int pre = 0; 01006 01007 if (chan) { 01008 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 01009 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 01010 } 01011 return pre; 01012 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1215 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_channel_whisper_stop(), ast_device_state_changed_literal(), ast_frfree, ast_jb_destroy(), AST_LIST_HEAD_INIT_NOLOCK, 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, LOG_WARNING, 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, ast_channel::whisper, and ast_channel::writetrans.
Referenced by acf_odbc_read(), acf_odbc_write(), 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().
01216 { 01217 int fd; 01218 struct ast_var_t *vardata; 01219 struct ast_frame *f; 01220 struct varshead *headp; 01221 struct ast_datastore *datastore = NULL; 01222 char name[AST_CHANNEL_NAME]; 01223 01224 headp=&chan->varshead; 01225 01226 AST_LIST_LOCK(&channels); 01227 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01228 AST_LIST_UNLOCK(&channels); 01229 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01230 } 01231 /* Lock and unlock the channel just to be sure nobody 01232 has it locked still */ 01233 ast_channel_lock(chan); 01234 ast_channel_unlock(chan); 01235 if (chan->tech_pvt) { 01236 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01237 free(chan->tech_pvt); 01238 } 01239 01240 if (chan->sched) { 01241 sched_context_destroy(chan->sched); 01242 chan->sched = NULL; 01243 } 01244 01245 ast_copy_string(name, chan->name, sizeof(name)); 01246 01247 /* Stop monitoring */ 01248 if (chan->monitor) 01249 chan->monitor->stop( chan, 0 ); 01250 01251 /* If there is native format music-on-hold state, free it */ 01252 if (chan->music_state) 01253 ast_moh_cleanup(chan); 01254 01255 /* if someone is whispering on the channel, stop them */ 01256 if (chan->whisper) 01257 ast_channel_whisper_stop(chan); 01258 01259 /* Free translators */ 01260 if (chan->readtrans) 01261 ast_translator_free_path(chan->readtrans); 01262 if (chan->writetrans) 01263 ast_translator_free_path(chan->writetrans); 01264 if (chan->pbx) 01265 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01266 free_cid(&chan->cid); 01267 ast_mutex_destroy(&chan->lock); 01268 /* Close pipes if appropriate */ 01269 if ((fd = chan->alertpipe[0]) > -1) 01270 close(fd); 01271 if ((fd = chan->alertpipe[1]) > -1) 01272 close(fd); 01273 if ((fd = chan->timingfd) > -1) 01274 close(fd); 01275 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01276 ast_frfree(f); 01277 01278 /* Get rid of each of the data stores on the channel */ 01279 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01280 /* Free the data store */ 01281 ast_channel_datastore_free(datastore); 01282 AST_LIST_HEAD_INIT_NOLOCK(&chan->datastores); 01283 01284 /* loop over the variables list, freeing all data and deleting list items */ 01285 /* no need to lock the list, as the channel is already locked */ 01286 01287 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01288 ast_var_delete(vardata); 01289 01290 ast_app_group_discard(chan); 01291 01292 /* Destroy the jitterbuffer */ 01293 ast_jb_destroy(chan); 01294 01295 ast_string_field_free_memory(chan); 01296 free(chan); 01297 AST_LIST_UNLOCK(&channels); 01298 01299 ast_device_state_changed_literal(name, NULL, NULL); 01300 }
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 3566 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().
03567 { 03568 struct ast_var_t *current, *newvar; 03569 const char *varname; 03570 03571 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03572 int vartype = 0; 03573 03574 varname = ast_var_full_name(current); 03575 if (!varname) 03576 continue; 03577 03578 if (varname[0] == '_') { 03579 vartype = 1; 03580 if (varname[1] == '_') 03581 vartype = 2; 03582 } 03583 03584 switch (vartype) { 03585 case 1: 03586 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03587 if (newvar) { 03588 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03589 if (option_debug) 03590 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03591 } 03592 break; 03593 case 2: 03594 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03595 if (newvar) { 03596 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03597 if (option_debug) 03598 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03599 } 03600 break; 03601 default: 03602 if (option_debug) 03603 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03604 break; 03605 } 03606 } 03607 }
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 3419 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(), LOG_WARNING, ast_channel::nativeformats, ast_channel::readformat, and ast_channel::writeformat.
Referenced by app_exec(), ast_channel_bridge(), ast_retrieve_call(), autoanswer_exec(), check_compat(), park_exec(), try_calling(), and wait_for_answer().
03420 { 03421 int src; 03422 int dst; 03423 03424 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03425 /* Already compatible! Moving on ... */ 03426 return 0; 03427 } 03428 03429 /* Set up translation from the chan to the peer */ 03430 src = chan->nativeformats; 03431 dst = peer->nativeformats; 03432 if (ast_translator_best_choice(&dst, &src) < 0) { 03433 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03434 return -1; 03435 } 03436 03437 /* if the best path is not 'pass through', then 03438 transcoding is needed; if desired, force transcode path 03439 to use SLINEAR between channels, but only if there is 03440 no direct conversion available */ 03441 if ((src != dst) && ast_opt_transcode_via_slin && 03442 (ast_translate_path_steps(dst, src) != 1)) 03443 dst = AST_FORMAT_SLINEAR; 03444 if (ast_set_read_format(chan, dst) < 0) { 03445 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03446 return -1; 03447 } 03448 if (ast_set_write_format(peer, dst) < 0) { 03449 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03450 return -1; 03451 } 03452 03453 /* Set up translation from the peer to the chan */ 03454 src = peer->nativeformats; 03455 dst = chan->nativeformats; 03456 if (ast_translator_best_choice(&dst, &src) < 0) { 03457 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03458 return -1; 03459 } 03460 03461 /* if the best path is not 'pass through', then 03462 transcoding is needed; if desired, force transcode path 03463 to use SLINEAR between channels, but only if there is 03464 no direct conversion available */ 03465 if ((src != dst) && ast_opt_transcode_via_slin && 03466 (ast_translate_path_steps(dst, src) != 1)) 03467 dst = AST_FORMAT_SLINEAR; 03468 if (ast_set_read_format(peer, dst) < 0) { 03469 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03470 return -1; 03471 } 03472 if (ast_set_write_format(chan, dst) < 0) { 03473 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03474 return -1; 03475 } 03476 return 0; 03477 }
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 3479 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, LOG_WARNING, ast_channel::masq, ast_channel::masqr, option_debug, and ast_channel::tech.
Referenced by ast_async_goto(), ast_masq_autoanswer_login(), ast_masq_hold_call(), ast_masq_park_call(), ast_pickup_call(), attempt_transfer(), builtin_atxfer(), check_availability(), check_bridge(), check_goto_on_transfer(), handle_invite_replaces(), iax_park(), misdn_transfer_bc(), my_pickup_call(), my_pickup_channel(), pickup_do(), and sip_park().
03480 { 03481 int res = -1; 03482 struct ast_channel *final_orig, *final_clone, *base; 03483 03484 retrymasq: 03485 final_orig = original; 03486 final_clone = clone; 03487 03488 ast_channel_lock(original); 03489 while (ast_channel_trylock(clone)) { 03490 ast_channel_unlock(original); 03491 usleep(1); 03492 ast_channel_lock(original); 03493 } 03494 03495 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03496 and if so, we don't really want to masquerade it, but its proxy */ 03497 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03498 final_orig = original->_bridge; 03499 03500 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03501 final_clone = clone->_bridge; 03502 03503 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03504 final_clone = base; 03505 } 03506 03507 if ((final_orig != original) || (final_clone != clone)) { 03508 /* Lots and lots of deadlock avoidance. The main one we're competing with 03509 * is ast_write(), which locks channels recursively, when working with a 03510 * proxy channel. */ 03511 if (ast_channel_trylock(final_orig)) { 03512 ast_channel_unlock(clone); 03513 ast_channel_unlock(original); 03514 goto retrymasq; 03515 } 03516 if (ast_channel_trylock(final_clone)) { 03517 ast_channel_unlock(final_orig); 03518 ast_channel_unlock(clone); 03519 ast_channel_unlock(original); 03520 goto retrymasq; 03521 } 03522 ast_channel_unlock(clone); 03523 ast_channel_unlock(original); 03524 original = final_orig; 03525 clone = final_clone; 03526 } 03527 03528 if (original == clone) { 03529 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03530 ast_channel_unlock(clone); 03531 ast_channel_unlock(original); 03532 return -1; 03533 } 03534 03535 if (option_debug) 03536 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03537 clone->name, original->name); 03538 if (original->masq) { 03539 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03540 original->masq->name, original->name); 03541 } else if (clone->masqr) { 03542 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03543 clone->name, clone->masqr->name); 03544 } else { 03545 original->masq = clone; 03546 clone->masqr = original; 03547 ast_queue_frame(original, &ast_null_frame); 03548 ast_queue_frame(clone, &ast_null_frame); 03549 if (option_debug) 03550 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03551 res = 0; 03552 } 03553 03554 ast_channel_unlock(clone); 03555 ast_channel_unlock(original); 03556 03557 return res; 03558 }
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 3105 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().
03106 { 03107 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 03108 { 03109 case 0: 03110 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 03111 case AST_CONTROL_HANGUP: 03112 return "Hangup"; 03113 case AST_CONTROL_RING: 03114 return "Local Ring"; 03115 case AST_CONTROL_RINGING: 03116 return "Remote end Ringing"; 03117 case AST_CONTROL_ANSWER: 03118 return "Remote end has Answered"; 03119 case AST_CONTROL_BUSY: 03120 return "Remote end is Busy"; 03121 case AST_CONTROL_CONGESTION: 03122 return "Congestion (circuits busy)"; 03123 default: 03124 return "Unknown Reason!!"; 03125 } 03126 }
int ast_channel_register | ( | const struct ast_channel_tech * | tech | ) |
Register a new telephony channel in Asterisk.
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports.
Definition at line 516 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, ast_channel_tech::description, 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().
00517 { 00518 struct chanlist *chan; 00519 00520 AST_LIST_LOCK(&channels); 00521 00522 AST_LIST_TRAVERSE(&backends, chan, list) { 00523 if (!strcasecmp(tech->type, chan->tech->type)) { 00524 ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type); 00525 AST_LIST_UNLOCK(&channels); 00526 return -1; 00527 } 00528 } 00529 00530 if (!(chan = ast_calloc(1, sizeof(*chan)))) { 00531 AST_LIST_UNLOCK(&channels); 00532 return -1; 00533 } 00534 chan->tech = tech; 00535 AST_LIST_INSERT_HEAD(&backends, chan, list); 00536 00537 if (option_debug) 00538 ast_log(LOG_DEBUG, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description); 00539 00540 if (option_verbose > 1) 00541 ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type, 00542 chan->tech->description); 00543 00544 AST_LIST_UNLOCK(&channels); 00545 return 0; 00546 }
int ast_channel_sendhtml | ( | struct ast_channel * | channel, | |
int | subclass, | |||
const char * | data, | |||
int | datalen | |||
) |
Sends HTML on given channel
Send HTML or URL on link. Returns 0 on success or -1 on failure
Definition at line 3407 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().
03408 { 03409 if (chan->tech->send_html) 03410 return chan->tech->send_html(chan, subclass, data, datalen); 03411 return -1; 03412 }
int ast_channel_sendurl | ( | struct ast_channel * | channel, | |
const char * | url | |||
) |
Sends a URL on a given link
Send URL on link. Returns 0 on success or -1 on failure
Definition at line 3414 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec(), and try_calling().
03415 { 03416 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03417 }
int ast_channel_setoption | ( | struct ast_channel * | channel, | |
int | option, | |||
void * | data, | |||
int | datalen, | |||
int | block | |||
) |
Sets an option on a channel.
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 4452 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(), rpt_exec(), set_listen_volume(), set_talk_volume(), set_volume(), try_calling(), vm_forwardoptions(), and zt_hangup().
04453 { 04454 int res; 04455 04456 if (chan->tech->setoption) { 04457 res = chan->tech->setoption(chan, option, data, datalen); 04458 if (res < 0) 04459 return res; 04460 } else { 04461 errno = ENOSYS; 04462 return -1; 04463 } 04464 if (block) { 04465 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04466 intermediate packets. XXX */ 04467 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04468 return -1; 04469 } 04470 return 0; 04471 }
void ast_channel_setwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Set when to hangup channel.
Set when to hang a channel up.
Definition at line 486 of file channel.c.
References ast_null_frame, ast_queue_frame(), and ast_channel::whentohangup.
Referenced by action_timeout(), and timeout_write().
00487 { 00488 chan->whentohangup = offset ? time(NULL) + offset : 0; 00489 ast_queue_frame(chan, &ast_null_frame); 00490 return; 00491 }
int ast_channel_spy_add | ( | struct ast_channel * | chan, | |
struct ast_channel_spy * | spy | |||
) |
Adds a spy to a channel, to begin receiving copies of the channel's audio frames.
chan | The channel to add the spy to. | |
spy | A pointer to ast_channel_spy structure describing how the spy is to be used. |
Definition at line 1415 of file channel.c.
References ast_calloc, ast_clear_flag, ast_cond_init(), AST_FORMAT_SLINEAR, ast_getformatname(), AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_INSERT_HEAD, AST_LIST_INSERT_TAIL, ast_log(), ast_set_flag, ast_test_flag, ast_channel_spy::chan, CHANSPY_FORMAT_AUDIO, CHANSPY_MIXAUDIO, CHANSPY_READ_VOLADJUST, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, CHANSPY_TRIGGER_READ, CHANSPY_TRIGGER_WRITE, CHANSPY_WRITE_VOLADJUST, ast_channel_spy_queue::format, LOG_DEBUG, LOG_WARNING, option_debug, ast_channel_spy::read_queue, ast_channel::spies, ast_channel_spy::trigger, ast_channel_spy::type, and ast_channel_spy::write_queue.
Referenced by start_spying(), and startmon().
01416 { 01417 /* Link the owner channel to the spy */ 01418 spy->chan = chan; 01419 01420 if (!ast_test_flag(spy, CHANSPY_FORMAT_AUDIO)) { 01421 ast_log(LOG_WARNING, "Could not add channel spy '%s' to channel '%s', only audio format spies are supported.\n", 01422 spy->type, chan->name); 01423 return -1; 01424 } 01425 01426 if (ast_test_flag(spy, CHANSPY_READ_VOLADJUST) && (spy->read_queue.format != AST_FORMAT_SLINEAR)) { 01427 ast_log(LOG_WARNING, "Cannot provide volume adjustment on '%s' format spies\n", 01428 ast_getformatname(spy->read_queue.format)); 01429 return -1; 01430 } 01431 01432 if (ast_test_flag(spy, CHANSPY_WRITE_VOLADJUST) && (spy->write_queue.format != AST_FORMAT_SLINEAR)) { 01433 ast_log(LOG_WARNING, "Cannot provide volume adjustment on '%s' format spies\n", 01434 ast_getformatname(spy->write_queue.format)); 01435 return -1; 01436 } 01437 01438 if (ast_test_flag(spy, CHANSPY_MIXAUDIO) && 01439 ((spy->read_queue.format != AST_FORMAT_SLINEAR) || 01440 (spy->write_queue.format != AST_FORMAT_SLINEAR))) { 01441 ast_log(LOG_WARNING, "Cannot provide audio mixing on '%s'-'%s' format spies\n", 01442 ast_getformatname(spy->read_queue.format), ast_getformatname(spy->write_queue.format)); 01443 return -1; 01444 } 01445 01446 if (!chan->spies) { 01447 if (!(chan->spies = ast_calloc(1, sizeof(*chan->spies)))) { 01448 return -1; 01449 } 01450 01451 AST_LIST_HEAD_INIT_NOLOCK(&chan->spies->list); 01452 AST_LIST_INSERT_HEAD(&chan->spies->list, spy, list); 01453 } else { 01454 AST_LIST_INSERT_TAIL(&chan->spies->list, spy, list); 01455 } 01456 01457 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) { 01458 ast_cond_init(&spy->trigger, NULL); 01459 ast_set_flag(spy, CHANSPY_TRIGGER_READ); 01460 ast_clear_flag(spy, CHANSPY_TRIGGER_WRITE); 01461 } 01462 01463 if (option_debug) 01464 ast_log(LOG_DEBUG, "Spy %s added to channel %s\n", 01465 spy->type, chan->name); 01466 01467 return 0; 01468 }
void ast_channel_spy_free | ( | struct ast_channel_spy * | spy | ) |
Free a spy.
spy | The spy to free |
Definition at line 1543 of file channel.c.
References ast_cond_destroy(), ast_frfree, AST_LIST_REMOVE_HEAD, ast_mutex_destroy(), ast_test_flag, CHANSPY_DONE, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, f, ast_channel_spy::lock, ast_channel_spy::read_queue, ast_channel_spy::status, ast_channel_spy::trigger, and ast_channel_spy::write_queue.
Referenced by channel_spy(), and mixmonitor_thread().
01544 { 01545 struct ast_frame *f = NULL; 01546 01547 if (spy->status == CHANSPY_DONE) 01548 return; 01549 01550 /* Switch status to done in case we get called twice */ 01551 spy->status = CHANSPY_DONE; 01552 01553 /* Drop any frames in the queue */ 01554 while ((f = AST_LIST_REMOVE_HEAD(&spy->write_queue.list, frame_list))) 01555 ast_frfree(f); 01556 while ((f = AST_LIST_REMOVE_HEAD(&spy->read_queue.list, frame_list))) 01557 ast_frfree(f); 01558 01559 /* Destroy the condition if in use */ 01560 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) 01561 ast_cond_destroy(&spy->trigger); 01562 01563 /* Destroy our mutex since it is no longer in use */ 01564 ast_mutex_destroy(&spy->lock); 01565 01566 return; 01567 }
struct ast_frame* ast_channel_spy_read_frame | ( | struct ast_channel_spy * | spy, | |
unsigned int | samples | |||
) | [read] |
Read one (or more) frames of audio from a channel being spied upon.
spy | The spy to operate on | |
samples | The number of audio samples to read |
Note: This function performs no locking; you must hold the spy's lock before calling this function. You must not hold the channel's lock at the same time.
Definition at line 4771 of file channel.c.
References ast_clear_flag, ast_codec_get_len(), ast_frame_adjust_volume(), ast_frame_slinear_sum(), AST_FRAME_VOICE, ast_frdup(), ast_frfree, AST_LIST_FIRST, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_NEXT, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_test_flag, CHANSPY_MIXAUDIO, CHANSPY_READ_VOLADJUST, CHANSPY_TRIGGER_FLUSH, CHANSPY_WRITE_VOLADJUST, copy_data_from_queue(), ast_channel_spy_queue::format, ast_frame::frametype, ast_channel_spy::read_queue, ast_channel_spy::read_vol_adjustment, ast_channel_spy_queue::samples, ast_channel_spy::write_queue, and ast_channel_spy::write_vol_adjustment.
Referenced by mixmonitor_thread(), and spy_generate().
04772 { 04773 struct ast_frame *result; 04774 /* buffers are allocated to hold SLINEAR, which is the largest format */ 04775 short read_buf[samples]; 04776 short write_buf[samples]; 04777 struct ast_frame *read_frame; 04778 struct ast_frame *write_frame; 04779 int need_dup; 04780 struct ast_frame stack_read_frame = { .frametype = AST_FRAME_VOICE, 04781 .subclass = spy->read_queue.format, 04782 .data = read_buf, 04783 .samples = samples, 04784 .datalen = ast_codec_get_len(spy->read_queue.format, samples), 04785 }; 04786 struct ast_frame stack_write_frame = { .frametype = AST_FRAME_VOICE, 04787 .subclass = spy->write_queue.format, 04788 .data = write_buf, 04789 .samples = samples, 04790 .datalen = ast_codec_get_len(spy->write_queue.format, samples), 04791 }; 04792 04793 /* if a flush has been requested, dump everything in whichever queue is larger */ 04794 if (ast_test_flag(spy, CHANSPY_TRIGGER_FLUSH)) { 04795 if (spy->read_queue.samples > spy->write_queue.samples) { 04796 if (ast_test_flag(spy, CHANSPY_READ_VOLADJUST)) { 04797 AST_LIST_TRAVERSE(&spy->read_queue.list, result, frame_list) 04798 ast_frame_adjust_volume(result, spy->read_vol_adjustment); 04799 } 04800 result = AST_LIST_FIRST(&spy->read_queue.list); 04801 AST_LIST_HEAD_SET_NOLOCK(&spy->read_queue.list, NULL); 04802 spy->read_queue.samples = 0; 04803 } else { 04804 if (ast_test_flag(spy, CHANSPY_WRITE_VOLADJUST)) { 04805 AST_LIST_TRAVERSE(&spy->write_queue.list, result, frame_list) 04806 ast_frame_adjust_volume(result, spy->write_vol_adjustment); 04807 } 04808 result = AST_LIST_FIRST(&spy->write_queue.list); 04809 AST_LIST_HEAD_SET_NOLOCK(&spy->write_queue.list, NULL); 04810 spy->write_queue.samples = 0; 04811 } 04812 ast_clear_flag(spy, CHANSPY_TRIGGER_FLUSH); 04813 return result; 04814 } 04815 04816 if ((spy->read_queue.samples < samples) || (spy->write_queue.samples < samples)) 04817 return NULL; 04818 04819 /* short-circuit if both head frames have exactly what we want */ 04820 if ((AST_LIST_FIRST(&spy->read_queue.list)->samples == samples) && 04821 (AST_LIST_FIRST(&spy->write_queue.list)->samples == samples)) { 04822 read_frame = AST_LIST_REMOVE_HEAD(&spy->read_queue.list, frame_list); 04823 write_frame = AST_LIST_REMOVE_HEAD(&spy->write_queue.list, frame_list); 04824 04825 spy->read_queue.samples -= samples; 04826 spy->write_queue.samples -= samples; 04827 04828 need_dup = 0; 04829 } else { 04830 copy_data_from_queue(&spy->read_queue, read_buf, samples); 04831 copy_data_from_queue(&spy->write_queue, write_buf, samples); 04832 04833 read_frame = &stack_read_frame; 04834 write_frame = &stack_write_frame; 04835 need_dup = 1; 04836 } 04837 04838 if (ast_test_flag(spy, CHANSPY_READ_VOLADJUST)) 04839 ast_frame_adjust_volume(read_frame, spy->read_vol_adjustment); 04840 04841 if (ast_test_flag(spy, CHANSPY_WRITE_VOLADJUST)) 04842 ast_frame_adjust_volume(write_frame, spy->write_vol_adjustment); 04843 04844 if (ast_test_flag(spy, CHANSPY_MIXAUDIO)) { 04845 ast_frame_slinear_sum(read_frame, write_frame); 04846 04847 if (need_dup) 04848 result = ast_frdup(read_frame); 04849 else { 04850 result = read_frame; 04851 ast_frfree(write_frame); 04852 } 04853 } else { 04854 if (need_dup) { 04855 result = ast_frdup(read_frame); 04856 AST_LIST_NEXT(result, frame_list) = ast_frdup(write_frame); 04857 } else { 04858 result = read_frame; 04859 AST_LIST_NEXT(result, frame_list) = write_frame; 04860 } 04861 } 04862 04863 return result; 04864 }
void ast_channel_spy_remove | ( | struct ast_channel * | chan, | |
struct ast_channel_spy * | spy | |||
) |
Remove a spy from a channel.
chan | The channel to remove the spy from | |
spy | The spy to be removed |
Definition at line 1533 of file channel.c.
References AST_LIST_REMOVE, ast_channel::spies, spy_cleanup(), and spy_detach().
Referenced by channel_spy().
01534 { 01535 if (!chan->spies) 01536 return; 01537 01538 AST_LIST_REMOVE(&chan->spies->list, spy, list); 01539 spy_detach(spy, chan); 01540 spy_cleanup(chan); 01541 }
void ast_channel_spy_stop_by_type | ( | struct ast_channel * | chan, | |
const char * | type | |||
) |
Find all spies of a particular type on a channel and stop them.
chan | The channel to operate on | |
type | A character string identifying the type of spies to be stopped |
Definition at line 1504 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, CHANSPY_RUNNING, ast_channel::spies, spy_cleanup(), spy_detach(), ast_channel_spy::status, and ast_channel_spy::type.
Referenced by mixmonitor_cli(), and stop_mixmonitor_exec().
01505 { 01506 struct ast_channel_spy *spy = NULL; 01507 01508 if (!chan->spies) 01509 return; 01510 01511 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) { 01512 if ((spy->type == type) && (spy->status == CHANSPY_RUNNING)) { 01513 AST_LIST_REMOVE_CURRENT(&chan->spies->list, list); 01514 spy_detach(spy, chan); 01515 } 01516 } 01517 AST_LIST_TRAVERSE_SAFE_END 01518 spy_cleanup(chan); 01519 }
void ast_channel_spy_trigger_wait | ( | struct ast_channel_spy * | spy | ) |
Efficiently wait until audio is available for a spy, or an exception occurs.
spy | The spy to wait on |
Definition at line 1521 of file channel.c.
References ast_cond_timedwait(), ast_tvadd(), ast_channel_spy::lock, and ast_channel_spy::trigger.
Referenced by mixmonitor_thread().
01522 { 01523 struct timeval tv; 01524 struct timespec ts; 01525 01526 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 01527 ts.tv_sec = tv.tv_sec; 01528 ts.tv_nsec = tv.tv_usec * 1000; 01529 01530 ast_cond_timedwait(&spy->trigger, &spy->lock, &ts); 01531 }
struct ast_silence_generator* ast_channel_start_silence_generator | ( | struct ast_channel * | chan | ) | [read] |
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 4903 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, and ast_channel::writeformat.
Referenced by __ast_play_and_record(), channel_spy(), and record_exec().
04904 { 04905 struct ast_silence_generator *state; 04906 04907 if (!(state = ast_calloc(1, sizeof(*state)))) { 04908 return NULL; 04909 } 04910 04911 state->old_write_format = chan->writeformat; 04912 04913 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 04914 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 04915 free(state); 04916 return NULL; 04917 } 04918 04919 ast_activate_generator(chan, &silence_generator, state); 04920 04921 if (option_debug) 04922 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 04923 04924 return state; 04925 }
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 4927 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(), channel_spy(), and record_exec().
04928 { 04929 if (!state) 04930 return; 04931 04932 ast_deactivate_generator(chan); 04933 04934 if (option_debug) 04935 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 04936 04937 if (ast_set_write_format(chan, state->old_write_format) < 0) 04938 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 04939 04940 free(state); 04941 }
int ast_channel_supports_html | ( | struct ast_channel * | channel | ) |
Checks for HTML support on a channel
Returns 0 if channel does not support HTML or non-zero if it does
Definition at line 3402 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.
Undeos a defer
Undo defer. ast_read will return any dtmf characters that were queued
Definition at line 1015 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
01016 { 01017 if (chan) 01018 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 01019 }
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 548 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().
00549 { 00550 struct chanlist *chan; 00551 00552 if (option_debug) 00553 ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type); 00554 00555 AST_LIST_LOCK(&channels); 00556 00557 AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) { 00558 if (chan->tech == tech) { 00559 AST_LIST_REMOVE_CURRENT(&backends, list); 00560 free(chan); 00561 if (option_verbose > 1) 00562 ast_verbose(VERBOSE_PREFIX_2 "Unregistered channel type '%s'\n", tech->type); 00563 break; 00564 } 00565 } 00566 AST_LIST_TRAVERSE_SAFE_END 00567 00568 AST_LIST_UNLOCK(&channels); 00569 }
struct ast_channel* ast_channel_walk_locked | ( | const struct ast_channel * | prev | ) | [read] |
Browse channels in use.
Browse channels in use Browse the channels currently in use.
Definition at line 1131 of file channel.c.
References channel_find_locked().
Referenced by action_status(), ast_complete_channels(), ast_pickup_call(), complete_ch_helper(), conf_exec(), handle_chanlist(), handle_chanlist_deprecated(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_nodebugchan_deprecated(), my_pickup_call(), my_pickup_channel(), next_channel(), pickup_by_exten(), pickup_by_mark(), and softhangup_exec().
01132 { 01133 return channel_find_locked(prev, NULL, 0, NULL, NULL, NULL); 01134 }
int ast_channel_whisper_feed | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Feed an audio frame into the whisper buffer on a channel.
chan | The channel to whisper onto | |
f | The frame to to whisper onto chan |
Definition at line 5160 of file channel.c.
References ast_mutex_lock(), ast_mutex_unlock(), ast_slinfactory_feed(), ast_channel_whisper_buffer::lock, ast_channel_whisper_buffer::sf, and ast_channel::whisper.
Referenced by channel_spy().
05161 { 05162 if (!chan->whisper) 05163 return -1; 05164 05165 ast_mutex_lock(&chan->whisper->lock); 05166 ast_slinfactory_feed(&chan->whisper->sf, f); 05167 ast_mutex_unlock(&chan->whisper->lock); 05168 05169 return 0; 05170 }
int ast_channel_whisper_start | ( | struct ast_channel * | chan | ) |
Begin 'whispering' onto a channel.
chan | The channel to whisper onto |
Note: This function performs no locking; you must hold the channel's lock before calling this function.
Definition at line 5145 of file channel.c.
References ast_calloc, AST_FLAG_WHISPER, ast_mutex_init(), ast_set_flag, ast_slinfactory_init(), ast_channel_whisper_buffer::lock, ast_channel_whisper_buffer::sf, and ast_channel::whisper.
Referenced by channel_spy().
05146 { 05147 if (chan->whisper) 05148 return -1; 05149 05150 if (!(chan->whisper = ast_calloc(1, sizeof(*chan->whisper)))) 05151 return -1; 05152 05153 ast_mutex_init(&chan->whisper->lock); 05154 ast_slinfactory_init(&chan->whisper->sf); 05155 ast_set_flag(chan, AST_FLAG_WHISPER); 05156 05157 return 0; 05158 }
void ast_channel_whisper_stop | ( | struct ast_channel * | chan | ) |
Stop 'whispering' onto a channel.
chan | The channel to whisper onto |
Definition at line 5172 of file channel.c.
References ast_clear_flag, AST_FLAG_WHISPER, AST_FORMAT_SLINEAR, ast_mutex_destroy(), ast_set_write_format(), ast_slinfactory_destroy(), ast_translator_free_path(), free, ast_channel_whisper_buffer::lock, ast_channel_whisper_buffer::original_format, ast_channel_whisper_buffer::path, ast_channel_whisper_buffer::sf, ast_channel::whisper, and ast_channel::writeformat.
Referenced by ast_channel_free(), ast_do_masquerade(), and channel_spy().
05173 { 05174 if (!chan->whisper) 05175 return; 05176 05177 ast_clear_flag(chan, AST_FLAG_WHISPER); 05178 if (chan->whisper->path) 05179 ast_translator_free_path(chan->whisper->path); 05180 if (chan->whisper->original_format && chan->writeformat == AST_FORMAT_SLINEAR) 05181 ast_set_write_format(chan, chan->whisper->original_format); 05182 ast_slinfactory_destroy(&chan->whisper->sf); 05183 ast_mutex_destroy(&chan->whisper->lock); 05184 free(chan->whisper); 05185 chan->whisper = NULL; 05186 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4704 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04705 { 04706 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04707 }
struct ast_variable* ast_channeltype_list | ( | void | ) | [read] |
return an ast_variable list of channeltypes
Definition at line 182 of file channel.c.
References AST_LIST_TRAVERSE, ast_variable_new(), ast_channel_tech::description, chanlist::tech, ast_channel_tech::type, and var.
00183 { 00184 struct chanlist *cl; 00185 struct ast_variable *var=NULL, *prev = NULL; 00186 AST_LIST_TRAVERSE(&backends, cl, list) { 00187 if (prev) { 00188 if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description))) 00189 prev = prev->next; 00190 } else { 00191 var = ast_variable_new(cl->tech->type, cl->tech->description); 00192 prev = var; 00193 } 00194 } 00195 return var; 00196 }
int ast_check_hangup | ( | struct ast_channel * | chan | ) |
Checks to see if a channel is needing hang up.
Check to see if a channel is needing hang up.
Definition at line 404 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_call(), ast_channel_bridge(), ast_check_hangup_locked(), ast_feature_request_and_dial(), ast_indicate_data(), ast_readstring_full(), ast_recvtext(), ast_sendtext(), ast_transfer(), ast_udptl_bridge(), ast_waitfordigit_full(), ast_write(), bridge_native_loop(), bridge_p2p_loop(), builtin_atxfer(), channel_spy(), common_exec(), conf_run(), deadagi_exec(), handle_sendimage(), iax2_bridge(), pbx_exec(), rpt(), rpt_exec(), wait_for_answer(), zt_setoption(), and zt_tdd_sendtext().
00405 { 00406 if (chan->_softhangup) /* yes if soft hangup flag set */ 00407 return 1; 00408 if (!chan->tech_pvt) /* yes if no technology private data */ 00409 return 1; 00410 if (!chan->whentohangup) /* no if no hangup scheduled */ 00411 return 0; 00412 if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */ 00413 return 0; 00414 chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */ 00415 return 1; 00416 }
static int ast_check_hangup_locked | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 418 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_check_hangup().
Referenced by ast_channel_bridge().
00419 { 00420 int res; 00421 ast_channel_lock(chan); 00422 res = ast_check_hangup(chan); 00423 ast_channel_unlock(chan); 00424 return res; 00425 }
void ast_deactivate_generator | ( | struct ast_channel * | chan | ) |
Deactive an active generator
Definition at line 1868 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_clear_flag, AST_FLAG_WRITE_INT, AST_GENERATOR_FD, ast_settimeout(), ast_channel::fds, ast_channel::generator, ast_channel::generatordata, and ast_generator::release.
Referenced by __ast_read(), app_exec(), ast_channel_stop_silence_generator(), ast_openstream_full(), ast_playtones_stop(), ast_quiet_chan(), ast_read_generator_actions(), ast_tonepair_stop(), ast_write(), cb_events(), channel_spy(), generator_force(), local_ast_moh_stop(), milliwatt_exec(), and wait_for_answer().
01869 { 01870 ast_channel_lock(chan); 01871 if (chan->generatordata) { 01872 if (chan->generator && chan->generator->release) 01873 chan->generator->release(chan, chan->generatordata); 01874 chan->generatordata = NULL; 01875 chan->generator = NULL; 01876 chan->fds[AST_GENERATOR_FD] = -1; 01877 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01878 ast_settimeout(chan, 0, NULL, NULL); 01879 } 01880 ast_channel_unlock(chan); 01881 }
int ast_do_masquerade | ( | struct ast_channel * | original | ) |
Masquerade a channel.
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 3640 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_channel_whisper_stop(), ast_clear_flag, ast_copy_flags, AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, AST_FLAG_WHISPER, 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_mutex_lock(), ast_mutex_unlock(), 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_channel_spy::chan, ast_channel::cid, clone_variables(), EVENT_FLAG_CALL, ast_channel::fdno, ast_channel::fds, ast_channel_tech::fixup, free_translation(), ast_channel_tech::hangup, ast_channel::hangupcause, language, ast_channel_spy::lock, ast_channel::lock, LOG_DEBUG, LOG_WARNING, 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, ast_channel::spies, t, ast_channel::tech, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel_tech::type, ast_channel::visible_indication, ast_channel::whisper, and ast_channel::writeformat.
Referenced by __ast_read(), ast_async_goto(), ast_hangup(), ast_waitfor_nandfds(), ast_write(), iax_park(), sip_park(), and sip_park_thread().
03641 { 03642 int x,i; 03643 int res=0; 03644 int origstate; 03645 struct ast_frame *cur; 03646 const struct ast_channel_tech *t; 03647 void *t_pvt; 03648 struct ast_callerid tmpcid; 03649 struct ast_channel *clone = original->masq; 03650 struct ast_channel_spy_list *spy_list = NULL; 03651 struct ast_channel_spy *spy = NULL; 03652 struct ast_cdr *cdr; 03653 int rformat = original->readformat; 03654 int wformat = original->writeformat; 03655 char newn[100]; 03656 char orig[100]; 03657 char masqn[100]; 03658 char zombn[100]; 03659 03660 if (option_debug > 3) 03661 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03662 clone->name, clone->_state, original->name, original->_state); 03663 03664 /* XXX This is a seriously wacked out operation. We're essentially putting the guts of 03665 the clone channel into the original channel. Start by killing off the original 03666 channel's backend. I'm not sure we're going to keep this function, because 03667 while the features are nice, the cost is very high in terms of pure nastiness. XXX */ 03668 03669 /* We need the clone's lock, too */ 03670 ast_channel_lock(clone); 03671 03672 if (option_debug > 1) 03673 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03674 03675 /* Having remembered the original read/write formats, we turn off any translation on either 03676 one */ 03677 free_translation(clone); 03678 free_translation(original); 03679 03680 03681 /* Unlink the masquerade */ 03682 original->masq = NULL; 03683 clone->masqr = NULL; 03684 03685 /* Save the original name */ 03686 ast_copy_string(orig, original->name, sizeof(orig)); 03687 /* Save the new name */ 03688 ast_copy_string(newn, clone->name, sizeof(newn)); 03689 /* Create the masq name */ 03690 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03691 03692 /* Copy the name from the clone channel */ 03693 ast_string_field_set(original, name, newn); 03694 03695 /* Mangle the name of the clone channel */ 03696 ast_string_field_set(clone, name, masqn); 03697 03698 /* Notify any managers of the change, first the masq then the other */ 03699 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\nNewUniqueid: %s\r\n", newn, masqn, clone->uniqueid, original->uniqueid); 03700 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03701 03702 /* Swap the technologies */ 03703 t = original->tech; 03704 original->tech = clone->tech; 03705 clone->tech = t; 03706 03707 /* Swap the cdrs */ 03708 cdr = original->cdr; 03709 original->cdr = clone->cdr; 03710 clone->cdr = cdr; 03711 03712 t_pvt = original->tech_pvt; 03713 original->tech_pvt = clone->tech_pvt; 03714 clone->tech_pvt = t_pvt; 03715 03716 /* Swap the alertpipes */ 03717 for (i = 0; i < 2; i++) { 03718 x = original->alertpipe[i]; 03719 original->alertpipe[i] = clone->alertpipe[i]; 03720 clone->alertpipe[i] = x; 03721 } 03722 03723 /* 03724 * Swap the readq's. The end result should be this: 03725 * 03726 * 1) All frames should be on the new (original) channel. 03727 * 2) Any frames that were already on the new channel before this 03728 * masquerade need to be at the end of the readq, after all of the 03729 * frames on the old (clone) channel. 03730 * 3) The alertpipe needs to get poked for every frame that was already 03731 * on the new channel, since we are now using the alert pipe from the 03732 * old (clone) channel. 03733 */ 03734 { 03735 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 03736 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 03737 03738 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 03739 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 03740 03741 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 03742 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 03743 if (original->alertpipe[1] > -1) { 03744 int poke = 0; 03745 write(original->alertpipe[1], &poke, sizeof(poke)); 03746 } 03747 } 03748 } 03749 03750 /* Swap the raw formats */ 03751 x = original->rawreadformat; 03752 original->rawreadformat = clone->rawreadformat; 03753 clone->rawreadformat = x; 03754 x = original->rawwriteformat; 03755 original->rawwriteformat = clone->rawwriteformat; 03756 clone->rawwriteformat = x; 03757 03758 /* Swap the spies */ 03759 spy_list = original->spies; 03760 original->spies = clone->spies; 03761 clone->spies = spy_list; 03762 03763 /* Update channel on respective spy lists if present */ 03764 if (original->spies) { 03765 AST_LIST_TRAVERSE(&original->spies->list, spy, list) { 03766 ast_mutex_lock(&spy->lock); 03767 spy->chan = original; 03768 ast_mutex_unlock(&spy->lock); 03769 } 03770 } 03771 if (clone->spies) { 03772 AST_LIST_TRAVERSE(&clone->spies->list, spy, list) { 03773 ast_mutex_lock(&spy->lock); 03774 spy->chan = clone; 03775 ast_mutex_unlock(&spy->lock); 03776 } 03777 } 03778 03779 clone->_softhangup = AST_SOFTHANGUP_DEV; 03780 03781 /* And of course, so does our current state. Note we need not 03782 call ast_setstate since the event manager doesn't really consider 03783 these separate. We do this early so that the clone has the proper 03784 state of the original channel. */ 03785 origstate = original->_state; 03786 original->_state = clone->_state; 03787 clone->_state = origstate; 03788 03789 if (clone->tech->fixup){ 03790 res = clone->tech->fixup(original, clone); 03791 if (res) 03792 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03793 } 03794 03795 /* Start by disconnecting the original's physical side */ 03796 if (clone->tech->hangup) 03797 res = clone->tech->hangup(clone); 03798 if (res) { 03799 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03800 ast_channel_unlock(clone); 03801 return -1; 03802 } 03803 03804 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03805 /* Mangle the name of the clone channel */ 03806 ast_string_field_set(clone, name, zombn); 03807 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03808 03809 /* Update the type. */ 03810 t_pvt = original->monitor; 03811 original->monitor = clone->monitor; 03812 clone->monitor = t_pvt; 03813 03814 /* Keep the same language. */ 03815 ast_string_field_set(original, language, clone->language); 03816 /* Copy the FD's other than the generator fd */ 03817 for (x = 0; x < AST_MAX_FDS; x++) { 03818 if (x != AST_GENERATOR_FD) 03819 original->fds[x] = clone->fds[x]; 03820 } 03821 03822 ast_app_group_update(clone, original); 03823 03824 /* move any whisperer over */ 03825 ast_channel_whisper_stop(original); 03826 if (ast_test_flag(clone, AST_FLAG_WHISPER)) { 03827 original->whisper = clone->whisper; 03828 ast_set_flag(original, AST_FLAG_WHISPER); 03829 clone->whisper = NULL; 03830 ast_clear_flag(clone, AST_FLAG_WHISPER); 03831 } 03832 03833 /* Move data stores over */ 03834 if (AST_LIST_FIRST(&clone->datastores)) 03835 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 03836 03837 clone_variables(original, clone); 03838 /* Presense of ADSI capable CPE follows clone */ 03839 original->adsicpe = clone->adsicpe; 03840 /* Bridge remains the same */ 03841 /* CDR fields remain the same */ 03842 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 03843 /* Application and data remain the same */ 03844 /* Clone exception becomes real one, as with fdno */ 03845 ast_copy_flags(original, clone, AST_FLAG_EXCEPTION); 03846 original->fdno = clone->fdno; 03847 /* Schedule context remains the same */ 03848 /* Stream stuff stays the same */ 03849 /* Keep the original state. The fixup code will need to work with it most likely */ 03850 03851 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 03852 out. */ 03853 tmpcid = original->cid; 03854 original->cid = clone->cid; 03855 clone->cid = tmpcid; 03856 03857 /* Restore original timing file descriptor */ 03858 original->fds[AST_TIMING_FD] = original->timingfd; 03859 03860 /* Our native formats are different now */ 03861 original->nativeformats = clone->nativeformats; 03862 03863 /* Context, extension, priority, app data, jump table, remain the same */ 03864 /* pvt switches. pbx stays the same, as does next */ 03865 03866 /* Set the write format */ 03867 ast_set_write_format(original, wformat); 03868 03869 /* Set the read format */ 03870 ast_set_read_format(original, rformat); 03871 03872 /* Copy the music class */ 03873 ast_string_field_set(original, musicclass, clone->musicclass); 03874 03875 if (option_debug) 03876 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 03877 03878 /* Okay. Last thing is to let the channel driver know about all this mess, so he 03879 can fix up everything as best as possible */ 03880 if (original->tech->fixup) { 03881 res = original->tech->fixup(clone, original); 03882 if (res) { 03883 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 03884 original->tech->type, original->name); 03885 ast_channel_unlock(clone); 03886 return -1; 03887 } 03888 } else 03889 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 03890 original->tech->type, original->name); 03891 03892 /* If an indication is currently playing maintain it on the channel that is taking the place of original */ 03893 if (original->visible_indication) 03894 ast_indicate(original, original->visible_indication); 03895 03896 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 03897 a zombie so nothing tries to touch it. If it's already been marked as a 03898 zombie, then free it now (since it already is considered invalid). */ 03899 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 03900 if (option_debug) 03901 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 03902 ast_channel_unlock(clone); 03903 manager_event(EVENT_FLAG_CALL, "Hangup", 03904 "Channel: %s\r\n" 03905 "Uniqueid: %s\r\n" 03906 "Cause: %d\r\n" 03907 "Cause-txt: %s\r\n", 03908 clone->name, 03909 clone->uniqueid, 03910 clone->hangupcause, 03911 ast_cause2str(clone->hangupcause) 03912 ); 03913 ast_channel_free(clone); 03914 } else { 03915 if (option_debug) 03916 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 03917 ast_set_flag(clone, AST_FLAG_ZOMBIE); 03918 ast_queue_frame(clone, &ast_null_frame); 03919 ast_channel_unlock(clone); 03920 } 03921 03922 /* Signal any blocker */ 03923 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 03924 pthread_kill(original->blocker, SIGURG); 03925 if (option_debug) 03926 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 03927 return 0; 03928 }
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 4042 of file channel.c.
References ast_channel::_bridge, ast_channel::_softhangup, AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_IGNORE_SIGS, AST_BRIDGE_RETRY, AST_CONTROL_HOLD, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FRAME_CONTROL, AST_FRAME_DTMF, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_HTML, AST_FRAME_IMAGE, AST_FRAME_MODEM, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, ast_indicate_data(), ast_jb_do_usecheck(), ast_jb_get_and_deliver(), ast_jb_get_when_to_wakeup(), ast_jb_put(), ast_log(), ast_read(), AST_SOFTHANGUP_UNBRIDGE, ast_waitfor_n(), ast_write(), ast_frame::data, ast_frame::datalen, f, ast_bridge_config::flags, ast_frame::frametype, LOG_DEBUG, ast_channel::nativeformats, option_debug, ast_frame::subclass, ast_channel::tech_pvt, and ast_bridge_config::timelimit.
Referenced by ast_channel_bridge().
04045 { 04046 /* Copy voice back and forth between the two channels. */ 04047 struct ast_channel *cs[3]; 04048 struct ast_frame *f; 04049 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04050 int o0nativeformats; 04051 int o1nativeformats; 04052 int watch_c0_dtmf; 04053 int watch_c1_dtmf; 04054 void *pvt0, *pvt1; 04055 /* Indicates whether a frame was queued into a jitterbuffer */ 04056 int frame_put_in_jb = 0; 04057 int jb_in_use; 04058 int to; 04059 04060 cs[0] = c0; 04061 cs[1] = c1; 04062 pvt0 = c0->tech_pvt; 04063 pvt1 = c1->tech_pvt; 04064 o0nativeformats = c0->nativeformats; 04065 o1nativeformats = c1->nativeformats; 04066 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 04067 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 04068 04069 /* Check the need of a jitterbuffer for each channel */ 04070 jb_in_use = ast_jb_do_usecheck(c0, c1); 04071 04072 for (;;) { 04073 struct ast_channel *who, *other; 04074 04075 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 04076 (o0nativeformats != c0->nativeformats) || 04077 (o1nativeformats != c1->nativeformats)) { 04078 /* Check for Masquerade, codec changes, etc */ 04079 res = AST_BRIDGE_RETRY; 04080 break; 04081 } 04082 if (bridge_end.tv_sec) { 04083 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 04084 if (to <= 0) { 04085 if (config->timelimit) 04086 res = AST_BRIDGE_RETRY; 04087 else 04088 res = AST_BRIDGE_COMPLETE; 04089 break; 04090 } 04091 } else 04092 to = -1; 04093 /* Calculate the appropriate max sleep interval - in general, this is the time, 04094 left to the closest jb delivery moment */ 04095 if (jb_in_use) 04096 to = ast_jb_get_when_to_wakeup(c0, c1, to); 04097 who = ast_waitfor_n(cs, 2, &to); 04098 if (!who) { 04099 /* No frame received within the specified timeout - check if we have to deliver now */ 04100 if (jb_in_use) 04101 ast_jb_get_and_deliver(c0, c1); 04102 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04103 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04104 c0->_softhangup = 0; 04105 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04106 c1->_softhangup = 0; 04107 c0->_bridge = c1; 04108 c1->_bridge = c0; 04109 } 04110 continue; 04111 } 04112 f = ast_read(who); 04113 if (!f) { 04114 *fo = NULL; 04115 *rc = who; 04116 if (option_debug) 04117 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 04118 break; 04119 } 04120 04121 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 04122 /* Try add the frame info the who's bridged channel jitterbuff */ 04123 if (jb_in_use) 04124 frame_put_in_jb = !ast_jb_put(other, f); 04125 04126 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 04127 int bridge_exit = 0; 04128 04129 switch (f->subclass) { 04130 case AST_CONTROL_HOLD: 04131 case AST_CONTROL_UNHOLD: 04132 case AST_CONTROL_VIDUPDATE: 04133 ast_indicate_data(other, f->subclass, f->data, f->datalen); 04134 break; 04135 default: 04136 *fo = f; 04137 *rc = who; 04138 bridge_exit = 1; 04139 if (option_debug) 04140 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 04141 break; 04142 } 04143 if (bridge_exit) 04144 break; 04145 } 04146 if ((f->frametype == AST_FRAME_VOICE) || 04147 (f->frametype == AST_FRAME_DTMF_BEGIN) || 04148 (f->frametype == AST_FRAME_DTMF) || 04149 (f->frametype == AST_FRAME_VIDEO) || 04150 (f->frametype == AST_FRAME_IMAGE) || 04151 (f->frametype == AST_FRAME_HTML) || 04152 (f->frametype == AST_FRAME_MODEM) || 04153 (f->frametype == AST_FRAME_TEXT)) { 04154 /* monitored dtmf causes exit from bridge */ 04155 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 04156 04157 if (monitored_source && 04158 (f->frametype == AST_FRAME_DTMF_END || 04159 f->frametype == AST_FRAME_DTMF_BEGIN)) { 04160 *fo = f; 04161 *rc = who; 04162 if (option_debug) 04163 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 04164 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 04165 who->name); 04166 break; 04167 } 04168 /* Write immediately frames, not passed through jb */ 04169 if (!frame_put_in_jb) 04170 ast_write(other, f); 04171 04172 /* Check if we have to deliver now */ 04173 if (jb_in_use) 04174 ast_jb_get_and_deliver(c0, c1); 04175 } 04176 /* XXX do we want to pass on also frames not matched above ? */ 04177 ast_frfree(f); 04178 04179 /* Swap who gets priority */ 04180 cs[2] = cs[0]; 04181 cs[0] = cs[1]; 04182 cs[1] = cs[2]; 04183 } 04184 return res; 04185 }
struct ast_channel* ast_get_channel_by_exten_locked | ( | const char * | exten, | |
const char * | context | |||
) | [read] |
Get channel by exten (and optionally context) and lock it.
Definition at line 1156 of file channel.c.
References channel_find_locked().
01157 { 01158 return channel_find_locked(NULL, NULL, 0, context, exten, NULL); 01159 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) | [read] |
Get channel by name and lock it.
Get channel by name (locks channel).
Definition at line 1137 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().
01138 { 01139 return channel_find_locked(NULL, name, 0, NULL, NULL, NULL); 01140 }
struct ast_channel* ast_get_channel_by_name_prefix_locked | ( | const char * | name, | |
const int | namelen | |||
) | [read] |
Get channel by name prefix and lock it.
Get channel by name prefix (locks channel).
Definition at line 1143 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01144 { 01145 return channel_find_locked(NULL, name, namelen, NULL, NULL, NULL); 01146 }
struct ast_channel* ast_get_channel_by_uniqueid_locked | ( | const char * | uniqueid | ) | [read] |
Get channel by uniqueid (locks channel)
Definition at line 1168 of file channel.c.
References channel_find_locked().
Referenced by action_hangup(), action_redirect(), ast_get_holded_call(), next_channel(), start_monitor_action(), and stop_monitor_action().
01169 { 01170 return channel_find_locked(NULL, NULL, 0, NULL, NULL, uniqueid); 01171 }
struct ast_channel_tech* ast_get_channel_tech | ( | const char * | name | ) | [read] |
Get a channel technology structure by name.
name | name of technology to find |
Definition at line 571 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().
00572 { 00573 struct chanlist *chanls; 00574 const struct ast_channel_tech *ret = NULL; 00575 00576 if (AST_LIST_LOCK(&channels)) { 00577 ast_log(LOG_WARNING, "Unable to lock channel tech list\n"); 00578 return NULL; 00579 } 00580 00581 AST_LIST_TRAVERSE(&backends, chanls, list) { 00582 if (!strcasecmp(name, chanls->tech->type)) { 00583 ret = chanls->tech; 00584 break; 00585 } 00586 } 00587 00588 AST_LIST_UNLOCK(&channels); 00589 00590 return ret; 00591 }
ast_group_t ast_get_group | ( | const char * | s | ) |
Definition at line 4625 of file channel.c.
References ast_log(), ast_strdupa, ast_strlen_zero(), group, LOG_ERROR, LOG_WARNING, and strsep().
Referenced by _parse(), build_device(), build_gateway(), build_peer(), build_user(), func_channel_write(), pickdown_exec(), pickup_exec(), process_zap(), read_agent_config(), and steal_exec().
04626 { 04627 char *piece; 04628 char *c; 04629 int start=0, finish=0, x; 04630 ast_group_t group = 0; 04631 04632 if (ast_strlen_zero(s)) 04633 return 0; 04634 04635 c = ast_strdupa(s); 04636 04637 while ((piece = strsep(&c, ","))) { 04638 if (sscanf(piece, "%d-%d", &start, &finish) == 2) { 04639 /* Range */ 04640 } else if (sscanf(piece, "%d", &start)) { 04641 /* Just one */ 04642 finish = start; 04643 } else { 04644 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04645 continue; 04646 } 04647 for (x = start; x <= finish; x++) { 04648 if ((x > 63) || (x < 0)) { 04649 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04650 } else 04651 group |= ((ast_group_t) 1 << x); 04652 } 04653 } 04654 return group; 04655 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hangup a channel.
Hang up a channel.
Definition at line 1745 of file channel.c.
References 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::blocker, ast_channel::blockproc, ast_channel::cdr, CRASH, detach_spies(), EVENT_FLAG_CALL, free_translation(), ast_channel::generator, ast_channel::generatordata, ast_channel_tech::hangup, ast_channel::hangupcause, LOG_DEBUG, LOG_WARNING, 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_pbx_run(), __ast_request_and_dial(), __oh323_new(), agent_hangup(), agent_read(), alsa_new(), answer_exec_run(), app_exec(), ast_async_goto(), ast_autoanswer_login(), ast_bridge_call_thread(), ast_dial_destroy(), ast_dial_hangup(), ast_feature_request_and_dial(), ast_iax2_new(), ast_pbx_outgoing_app2(), ast_pbx_outgoing_exten2(), ast_pbx_run_app(), ast_retrieve_call(), ast_retrieve_call_to_death(), ast_send_message(), async_wait(), autoanswer_exec(), begin_dial(), build_conf(), builtin_atxfer(), chanavail_exec(), check_compat(), check_goto_on_transfer(), clear_caller(), conf_free(), conf_run(), connect_link(), do_autoanswer_thread(), do_hang(), do_holding_thread(), do_parking_thread(), features_hangup(), findmeexec(), gtalk_new(), handle_enbloc_call_message(), handle_frame(), handle_frame_ownerless(), handle_hd_hf(), handle_init_event(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_soft_key_event_message(), handle_stimulus_message(), hangup_chan(), hangupcalls(), hanguptree(), iax2_request(), iax_park(), iax_park_thread(), local_attended_transfer(), local_hangup(), mgcp_new(), mgcp_ss(), monitor_dial(), nbs_new(), oss_new(), park_exec(), parkandannounce_exec(), phone_new(), rpt(), rpt_call(), rpt_exec(), 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().
01746 { 01747 int res = 0; 01748 struct ast_cdr *cdr = NULL; 01749 01750 /* Don't actually hang up a channel that will masquerade as someone else, or 01751 if someone is going to masquerade as us */ 01752 ast_channel_lock(chan); 01753 01754 detach_spies(chan); /* get rid of spies */ 01755 01756 ast_autoservice_stop(chan); 01757 01758 if (chan->masq) { 01759 if (ast_do_masquerade(chan)) 01760 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01761 } 01762 01763 if (chan->masq) { 01764 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01765 ast_channel_unlock(chan); 01766 return 0; 01767 } 01768 /* If this channel is one which will be masqueraded into something, 01769 mark it as a zombie already, so we know to free it later */ 01770 if (chan->masqr) { 01771 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01772 ast_channel_unlock(chan); 01773 return 0; 01774 } 01775 free_translation(chan); 01776 /* Close audio stream */ 01777 if (chan->stream) { 01778 ast_closestream(chan->stream); 01779 chan->stream = NULL; 01780 } 01781 /* Close video stream */ 01782 if (chan->vstream) { 01783 ast_closestream(chan->vstream); 01784 chan->vstream = NULL; 01785 } 01786 if (chan->sched) { 01787 sched_context_destroy(chan->sched); 01788 chan->sched = NULL; 01789 } 01790 01791 if (chan->generatordata) /* Clear any tone stuff remaining */ 01792 chan->generator->release(chan, chan->generatordata); 01793 chan->generatordata = NULL; 01794 chan->generator = NULL; 01795 if (chan->cdr) { /* End the CDR if it hasn't already */ 01796 ast_cdr_end(chan->cdr); 01797 cdr = chan->cdr; 01798 chan->cdr = NULL; 01799 } 01800 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01801 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01802 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01803 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01804 CRASH; 01805 } 01806 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01807 if (option_debug) 01808 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01809 if (chan->tech->hangup) 01810 res = chan->tech->hangup(chan); 01811 } else { 01812 if (option_debug) 01813 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01814 } 01815 01816 ast_channel_unlock(chan); 01817 manager_event(EVENT_FLAG_CALL, "Hangup", 01818 "Channel: %s\r\n" 01819 "Uniqueid: %s\r\n" 01820 "Cause: %d\r\n" 01821 "Cause-txt: %s\r\n", 01822 chan->name, 01823 chan->uniqueid, 01824 chan->hangupcause, 01825 ast_cause2str(chan->hangupcause) 01826 ); 01827 ast_channel_free(chan); 01828 01829 if (cdr) 01830 ast_cdr_detach(cdr); 01831 01832 return res; 01833 }
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 2612 of file channel.c.
References ast_indicate_data().
Referenced by __ast_play_and_record(), agent_new(), ast_bridge_call(), 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(), record_exec(), rpt(), rpt_exec(), send_waveform_to_channel(), skinny_ss(), sla_handle_hold_event(), sla_station_exec(), sla_trunk_exec(), and wait_for_answer().
02613 { 02614 return ast_indicate_data(chan, condition, NULL, 0); 02615 }
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 2617 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_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, LOG_WARNING, option_debug, ast_channel::tech, ast_channel::visible_indication, and ast_channel::zone.
Referenced by __login_exec(), agent_hangup(), ast_bridge_call(), ast_generic_bridge(), ast_indicate(), bridge_native_loop(), bridge_p2p_loop(), do_parking_thread(), park_call_full(), pbx_builtin_waitexten(), and wait_for_answer().
02618 { 02619 int res = -1; 02620 02621 ast_channel_lock(chan); 02622 /* Stop if we're a zombie or need a soft hangup */ 02623 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02624 ast_channel_unlock(chan); 02625 return -1; 02626 } 02627 if (chan->tech->indicate) 02628 res = chan->tech->indicate(chan, condition, data, datalen); 02629 ast_channel_unlock(chan); 02630 if (!chan->tech->indicate || res) { 02631 /* 02632 * Device does not support (that) indication, lets fake 02633 * it by doing our own tone generation. (PM2002) 02634 */ 02635 if (condition < 0) 02636 ast_playtones_stop(chan); 02637 else { 02638 const struct tone_zone_sound *ts = NULL; 02639 switch (condition) { 02640 case AST_CONTROL_RINGING: 02641 ts = ast_get_indication_tone(chan->zone, "ring"); 02642 break; 02643 case AST_CONTROL_BUSY: 02644 ts = ast_get_indication_tone(chan->zone, "busy"); 02645 break; 02646 case AST_CONTROL_CONGESTION: 02647 ts = ast_get_indication_tone(chan->zone, "congestion"); 02648 break; 02649 } 02650 if (ts && ts->data[0]) { 02651 if (option_debug) 02652 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02653 ast_playtones_start(chan,0,ts->data, 1); 02654 res = 0; 02655 chan->visible_indication = condition; 02656 } else if (condition == AST_CONTROL_PROGRESS) { 02657 /* ast_playtones_stop(chan); */ 02658 } else if (condition == AST_CONTROL_PROCEEDING) { 02659 /* Do nothing, really */ 02660 } else if (condition == AST_CONTROL_HOLD) { 02661 /* Do nothing.... */ 02662 } else if (condition == AST_CONTROL_UNHOLD) { 02663 /* Do nothing.... */ 02664 } else if (condition == AST_CONTROL_VIDUPDATE) { 02665 /* Do nothing.... */ 02666 } else { 02667 /* not handled */ 02668 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02669 res = -1; 02670 } 02671 } 02672 } else 02673 chan->visible_indication = condition; 02674 02675 return res; 02676 }
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 4661 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04664 { 04665 ast_moh_start_ptr = start_ptr; 04666 ast_moh_stop_ptr = stop_ptr; 04667 ast_moh_cleanup_ptr = cleanup_ptr; 04668 }
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 2594 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().
02595 { 02596 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02597 if (option_debug > 4) 02598 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); 02599 return ret; 02600 }
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 4698 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04699 { 04700 if (ast_moh_cleanup_ptr) 04701 ast_moh_cleanup_ptr(chan); 04702 }
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 4678 of file channel.c.
References ast_moh_start_ptr, ast_verbose(), option_verbose, and VERBOSE_PREFIX_3.
Referenced by alsa_indicate(), app_exec(), ast_autoanswer_login(), ast_hold_call(), cb_events(), 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().
04679 { 04680 if (ast_moh_start_ptr) 04681 return ast_moh_start_ptr(chan, mclass, interpclass); 04682 04683 if (option_verbose > 2) { 04684 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04685 mclass ? mclass : (interpclass ? interpclass : "default")); 04686 } 04687 04688 return 0; 04689 }
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 4692 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), ast_get_holded_call(), ast_retrieve_call(), autoanswer_exec(), cb_events(), conf_run(), 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(), try_calling(), and zt_indicate().
04693 { 04694 if (ast_moh_stop_ptr) 04695 ast_moh_stop_ptr(chan); 04696 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
Print call group and pickup group ---.
print call- and pickup groups into buffer
Definition at line 4710 of file channel.c.
Referenced by _sip_show_peer(), func_channel_read(), misdn_cfg_get_config_string(), print_group(), read_config(), and serialize_showchan().
04711 { 04712 unsigned int i; 04713 int first=1; 04714 char num[3]; 04715 04716 buf[0] = '\0'; 04717 04718 if (!group) /* Return empty string if no group */ 04719 return buf; 04720 04721 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04722 if (group & ((ast_group_t) 1 << i)) { 04723 if (!first) { 04724 strncat(buf, ", ", buflen); 04725 } else { 04726 first=0; 04727 } 04728 snprintf(num, sizeof(num), "%u", i); 04729 strncat(buf, num, buflen); 04730 } 04731 } 04732 return buf; 04733 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2798 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, LOG_WARNING, option_debug, ast_channel::rawwriteformat, ast_frame::src, and ast_frame::subclass.
Referenced by ast_activate_generator().
02799 { 02800 struct ast_frame a = { AST_FRAME_VOICE }; 02801 char nothing[128]; 02802 02803 /* Send an empty audio frame to get things moving */ 02804 if (chan->_state != AST_STATE_UP) { 02805 if (option_debug) 02806 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02807 a.subclass = chan->rawwriteformat; 02808 a.data = nothing + AST_FRIENDLY_OFFSET; 02809 a.src = "ast_prod"; 02810 if (ast_write(chan, &a)) 02811 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02812 } 02813 return 0; 02814 }
int ast_queue_control | ( | struct ast_channel * | chan, | |
enum ast_control_frame_type | control | |||
) |
Queue a control frame.
Queue a control frame with payload.
Definition at line 980 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and ast_frame::subclass.
Referenced by __oh323_update_info(), __zt_exception(), ast_pickup_call(), attempt_transfer(), auto_congest(), cb_events(), 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().
00981 { 00982 struct ast_frame f = { AST_FRAME_CONTROL, }; 00983 00984 f.subclass = control; 00985 00986 return ast_queue_frame(chan, &f); 00987 }
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 990 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), ast_frame::data, ast_frame::datalen, and ast_frame::subclass.
Referenced by iax2_queue_control_data(), process_sdp(), skinny_hold(), zt_handle_event(), and zt_hangup().
00992 { 00993 struct ast_frame f = { AST_FRAME_CONTROL, }; 00994 00995 f.subclass = control; 00996 f.data = (void *) data; 00997 f.datalen = datalen; 00998 00999 return ast_queue_frame(chan, &f); 01000 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin | |||
) |
Queue an outgoing media frame.
Queue an outgoing frame.
Definition at line 912 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, LOG_WARNING, 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().
00913 { 00914 struct ast_frame *f; 00915 struct ast_frame *cur; 00916 int blah = 1; 00917 int qlen = 0; 00918 00919 /* Build us a copy and free the original one */ 00920 if (!(f = ast_frdup(fin))) { 00921 ast_log(LOG_WARNING, "Unable to duplicate frame\n"); 00922 return -1; 00923 } 00924 ast_channel_lock(chan); 00925 00926 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00927 if ((cur = AST_LIST_LAST(&chan->readq)) && (cur->frametype == AST_FRAME_CONTROL) && (cur->subclass == AST_CONTROL_HANGUP)) { 00928 ast_frfree(f); 00929 ast_channel_unlock(chan); 00930 return 0; 00931 } 00932 00933 /* Count how many frames exist on the queue */ 00934 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00935 qlen++; 00936 } 00937 00938 /* Allow up to 96 voice frames outstanding, and up to 128 total frames */ 00939 if (((fin->frametype == AST_FRAME_VOICE) && (qlen > 96)) || (qlen > 128)) { 00940 if (fin->frametype != AST_FRAME_VOICE) { 00941 ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name); 00942 CRASH; 00943 } else { 00944 if (option_debug) 00945 ast_log(LOG_DEBUG, "Dropping voice to exceptionally long queue on %s\n", chan->name); 00946 ast_frfree(f); 00947 ast_channel_unlock(chan); 00948 return 0; 00949 } 00950 } 00951 AST_LIST_INSERT_TAIL(&chan->readq, f, frame_list); 00952 if (chan->alertpipe[1] > -1) { 00953 if (write(chan->alertpipe[1], &blah, sizeof(blah)) != sizeof(blah)) 00954 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s, frametype/subclass %d/%d (qlen = %d): %s!\n", 00955 chan->name, f->frametype, f->subclass, qlen, strerror(errno)); 00956 #ifdef HAVE_ZAPTEL 00957 } else if (chan->timingfd > -1) { 00958 ioctl(chan->timingfd, ZT_TIMERPING, &blah); 00959 #endif 00960 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00961 pthread_kill(chan->blocker, SIGURG); 00962 } 00963 ast_channel_unlock(chan); 00964 return 0; 00965 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame for channel.
Queue a hangup frame.
Definition at line 968 of file channel.c.
References ast_channel::_softhangup, ast_channel_trylock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FRAME_CONTROL, ast_queue_frame(), and AST_SOFTHANGUP_DEV.
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().
00969 { 00970 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 00971 /* Yeah, let's not change a lock-critical value without locking */ 00972 if (!ast_channel_trylock(chan)) { 00973 chan->_softhangup |= AST_SOFTHANGUP_DEV; 00974 ast_channel_unlock(chan); 00975 } 00976 return ast_queue_frame(chan, &f); 00977 }
struct ast_frame* ast_read | ( | struct ast_channel * | chan | ) | [read] |
Reads a frame.
chan | channel to read a frame from Read a frame. |
Definition at line 2602 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_generic_bridge(), ast_masq_autoanswer_login(), ast_masq_hold_call(), 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_autoanswer_thread(), do_holding_thread(), do_parking_thread(), do_waiting(), echo_exec(), features_read(), find_cache(), handle_invite_replaces(), handle_recordfile(), iax2_bridge(), iax_park_thread(), ices_exec(), isAnsweringMachine(), measurenoise(), misdn_bridge(), monitor_dial(), mp3_exec(), NBScat_exec(), receive_dtmf_digits(), record_exec(), recordthread(), rpt(), rpt_exec(), run_agi(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), sms_exec(), speech_background(), ss_thread(), wait_for_answer(), wait_for_hangup(), wait_for_winner(), waitforring_exec(), waitstream_core(), and zt_bridge().
02603 { 02604 return __ast_read(chan, 0); 02605 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 2198 of file channel.c.
References ast_deactivate_generator(), AST_FRAME_CNG, ast_internal_timing_enabled(), ast_log(), ast_settimeout(), ast_frame::datalen, ast_frame::frametype, ast_generator::generate, ast_channel::generator, generator_force(), ast_channel::generatordata, LOG_DEBUG, option_debug, ast_frame::samples, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by __ast_read().
02199 { 02200 if (chan->generatordata && !ast_internal_timing_enabled(chan)) { 02201 void *tmp = chan->generatordata; 02202 int res; 02203 02204 if (chan->timingfunc) { 02205 if (option_debug > 1) 02206 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 02207 ast_settimeout(chan, 0, NULL, NULL); 02208 } 02209 02210 chan->generatordata = NULL; /* reset, to let writes go through */ 02211 res = chan->generator->generate(chan, tmp, f->datalen, f->samples); 02212 chan->generatordata = tmp; 02213 if (res) { 02214 if (option_debug > 1) 02215 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 02216 ast_deactivate_generator(chan); 02217 } 02218 02219 } else if (f->frametype == AST_FRAME_CNG) { 02220 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 02221 if (option_debug > 1) 02222 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 02223 ast_settimeout(chan, 160, generator_force, chan); 02224 } 02225 } 02226 }
struct ast_frame* ast_read_noaudio | ( | struct ast_channel * | chan | ) | [read] |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame.
chan | channel to read a frame from |
Definition at line 2607 of file channel.c.
References __ast_read().
Referenced by conf_run().
02608 { 02609 return __ast_read(chan, 1); 02610 }
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 3354 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().
03355 { 03356 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03357 }
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 3359 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().
03360 { 03361 int pos = 0; /* index in the buffer where we accumulate digits */ 03362 int to = ftimeout; 03363 03364 /* Stop if we're a zombie or need a soft hangup */ 03365 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03366 return -1; 03367 if (!len) 03368 return -1; 03369 for (;;) { 03370 int d; 03371 if (c->stream) { 03372 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03373 ast_stopstream(c); 03374 usleep(1000); 03375 if (!d) 03376 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03377 } else { 03378 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03379 } 03380 if (d < 0) 03381 return -1; 03382 if (d == 0) { 03383 s[pos]='\0'; 03384 return 1; 03385 } 03386 if (d == 1) { 03387 s[pos]='\0'; 03388 return 2; 03389 } 03390 if (!strchr(enders, d)) 03391 s[pos++] = d; 03392 if (strchr(enders, d) || (pos >= len)) { 03393 s[pos]='\0'; 03394 return 0; 03395 } 03396 to = timeout; 03397 } 03398 /* Never reached */ 03399 return 0; 03400 }
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 2678 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02679 { 02680 int c; 02681 char *buf = ast_recvtext(chan, timeout); 02682 if (buf == NULL) 02683 return -1; /* error or timeout */ 02684 c = *(unsigned char *)buf; 02685 free(buf); 02686 return c; 02687 }
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 2689 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(), ast_frame::data, ast_frame::datalen, f, ast_frame::frametype, and ast_frame::subclass.
Referenced by ast_recvchar(), and handle_recvtext().
02690 { 02691 int res, done = 0; 02692 char *buf = NULL; 02693 02694 while (!done) { 02695 struct ast_frame *f; 02696 if (ast_check_hangup(chan)) 02697 break; 02698 res = ast_waitfor(chan, timeout); 02699 if (res <= 0) /* timeout or error */ 02700 break; 02701 timeout = res; /* update timeout */ 02702 f = ast_read(chan); 02703 if (f == NULL) 02704 break; /* no frame */ 02705 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02706 done = 1; /* force a break */ 02707 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02708 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02709 done = 1; 02710 } 02711 ast_frfree(f); 02712 } 02713 return buf; 02714 }
struct ast_channel* ast_request | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int * | status | |||
) | [read] |
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 3307 of file channel.c.
References ast_request_with_uniqueid().
Referenced by agent_request(), ast_feature_request_and_dial(), ast_send_message(), attempt_reconnect(), begin_dial(), build_conf(), chanavail_exec(), conf_run(), connect_link(), features_alloc(), findmeexec(), ring_entry(), rpt(), rpt_call(), rpt_exec(), rpt_tele_thread(), and wait_for_answer().
03308 { 03309 return ast_request_with_uniqueid(type, format, data, cause, NULL); 03310 }
struct ast_channel* ast_request_and_dial | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int | timeout, | |||
int * | reason, | |||
int | callingpres, | |||
const char * | cidnum, | |||
const char * | cidname, | |||
char * | uniqueid | |||
) | [read] |
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 3252 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten2().
03253 { 03254 return __ast_request_and_dial(type, format, data, timeout, outstate, 0, cidnum, cidname, NULL, uniqueid); 03255 }
struct ast_channel* ast_request_with_uniqueid | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int * | status, | |||
char * | uniqueid | |||
) | [read] |
Requests a channel.
type | type of channel to request | |
format | requested channel format (codec) | |
data | data to pass to the channel requester | |
status | status | |
uniqueid | uniqueid Request a channel of a given type, with data as optional information used by the low level module. Sets the channels uniqueid to 'uniqueid'. |
Definition at line 3257 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(), ast_channel_tech::capabilities, capabilities, channels, fmt, LOG_WARNING, ast_channel_tech::requester, chanlist::tech, and ast_channel_tech::type.
Referenced by __ast_request_and_dial(), and ast_request().
03258 { 03259 struct chanlist *chan; 03260 struct ast_channel *c; 03261 int capabilities; 03262 int fmt; 03263 int res; 03264 int foo; 03265 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03266 03267 if (!cause) 03268 cause = &foo; 03269 *cause = AST_CAUSE_NOTDEFINED; 03270 03271 if (AST_LIST_LOCK(&channels)) { 03272 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03273 return NULL; 03274 } 03275 03276 AST_LIST_TRAVERSE(&backends, chan, list) { 03277 if (strcasecmp(type, chan->tech->type)) 03278 continue; 03279 03280 capabilities = chan->tech->capabilities; 03281 fmt = format & AST_FORMAT_AUDIO_MASK; 03282 res = ast_translator_best_choice(&fmt, &capabilities); 03283 if (res < 0) { 03284 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03285 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 03286 AST_LIST_UNLOCK(&channels); 03287 return NULL; 03288 } 03289 AST_LIST_UNLOCK(&channels); 03290 if (!chan->tech->requester) 03291 return NULL; 03292 03293 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03294 return NULL; 03295 03296 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03297 return c; 03298 } 03299 03300 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03301 *cause = AST_CAUSE_NOSUCHDRIVER; 03302 AST_LIST_UNLOCK(&channels); 03303 03304 return NULL; 03305 }
int ast_safe_sleep | ( | struct ast_channel * | chan, | |
int | ms | |||
) |
Wait, look for hangups.
Wait for a specied amount of time, looking for hangups.
Definition at line 1195 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(), testclient_exec(), testserver_exec(), try_calling(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01196 { 01197 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01198 }
int ast_safe_sleep_conditional | ( | struct ast_channel * | chan, | |
int | ms, | |||
int(*)(void *) | cond, | |||
void * | data | |||
) |
Wait, look for hangups and condition arg.
Wait for a specied amount of time, looking for hangups and a condition argument.
Definition at line 1174 of file channel.c.
References ast_frfree, ast_read(), ast_waitfor(), cond, and f.
Referenced by __login_exec(), and ast_safe_sleep().
01175 { 01176 struct ast_frame *f; 01177 01178 while (ms > 0) { 01179 if (cond && ((*cond)(data) == 0)) 01180 return 0; 01181 ms = ast_waitfor(chan, ms); 01182 if (ms < 0) 01183 return -1; 01184 if (ms > 0) { 01185 f = ast_read(chan); 01186 if (!f) 01187 return -1; 01188 ast_frfree(f); 01189 } 01190 } 01191 return 0; 01192 }
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 428 of file channel.c.
References ast_malloc, and len.
Referenced by features_new(), and zt_new().
00429 { 00430 char *b2, buf[1]; 00431 int len; 00432 va_list args; 00433 00434 va_start(args, fmt); 00435 len = vsnprintf(buf, 1, fmt, args); 00436 va_end(args); 00437 00438 if (!(b2 = ast_malloc(len + 1))) 00439 return NULL; 00440 00441 va_start(args, fmt); 00442 vsnprintf(b2, len + 1, fmt, args); 00443 va_end(args); 00444 00445 return b2; 00446 }
int ast_say_character_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5124 of file channel.c.
References ast_say_character_str_full.
Referenced by common_exec(), pbx_builtin_saycharacters(), play_mailbox_owner(), rpt_exec(), rpt_tele_thread(), and saycharstr().
05126 { 05127 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 05128 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5118 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().
05120 { 05121 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 05122 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5112 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
05114 { 05115 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 05116 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 5136 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().
05138 { 05139 char buf[256]; 05140 05141 snprintf(buf, sizeof(buf), "%d", num); 05142 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 05143 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5106 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().
05108 { 05109 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 05110 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5100 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().
05102 { 05103 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 05104 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5130 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
05132 { 05133 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 05134 }
int ast_send_message | ( | const char * | type, | |
void * | data, | |||
char * | to, | |||
char * | from, | |||
char * | message, | |||
int | ispdu | |||
) |
"Requests" a channel for sending a message
type | type of channel to request | |
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 4944 of file channel.c.
References AST_FORMAT_SLINEAR, ast_hangup(), ast_request(), ast_sendtext(), and ast_set_callerid().
Referenced by action_message(), and attempt_thread().
04944 { 04945 struct ast_channel *chan = NULL; 04946 int status; 04947 int res = -1; 04948 04949 chan = ast_request(type, AST_FORMAT_SLINEAR, data, &status); 04950 if (chan) { 04951 if (from) { 04952 ast_set_callerid(chan, from, from, from); 04953 } 04954 res = ast_sendtext(chan, to, message, ispdu); 04955 /* XXX what about message CDRs ??? XXX */ 04956 ast_hangup(chan); 04957 return res; 04958 } 04959 04960 return res; 04961 }
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 2788 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().
02789 { 02790 if (chan->tech->send_digit_begin) { 02791 ast_senddigit_begin(chan, digit); 02792 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02793 } 02794 02795 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02796 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Definition at line 2729 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().
02730 { 02731 /* Device does not support DTMF tones, lets fake 02732 * it by doing our own generation. */ 02733 static const char* dtmf_tones[] = { 02734 "941+1336", /* 0 */ 02735 "697+1209", /* 1 */ 02736 "697+1336", /* 2 */ 02737 "697+1477", /* 3 */ 02738 "770+1209", /* 4 */ 02739 "770+1336", /* 5 */ 02740 "770+1477", /* 6 */ 02741 "852+1209", /* 7 */ 02742 "852+1336", /* 8 */ 02743 "852+1477", /* 9 */ 02744 "697+1633", /* A */ 02745 "770+1633", /* B */ 02746 "852+1633", /* C */ 02747 "941+1633", /* D */ 02748 "941+1209", /* * */ 02749 "941+1477" /* # */ 02750 }; 02751 02752 if (!chan->tech->send_digit_begin) 02753 return 0; 02754 02755 if (!chan->tech->send_digit_begin(chan, digit)) 02756 return 0; 02757 02758 if (digit >= '0' && digit <='9') 02759 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02760 else if (digit >= 'A' && digit <= 'D') 02761 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02762 else if (digit == '*') 02763 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02764 else if (digit == '#') 02765 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02766 else { 02767 /* not handled */ 02768 if (option_debug) 02769 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02770 } 02771 02772 return 0; 02773 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Definition at line 2775 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().
02776 { 02777 int res = -1; 02778 02779 if (chan->tech->send_digit_end) 02780 res = chan->tech->send_digit_end(chan, digit, duration); 02781 02782 if (res && chan->generator) 02783 ast_playtones_stop(chan); 02784 02785 return 0; 02786 }
int ast_sendtext | ( | struct ast_channel * | chan, | |
const char * | dest, | |||
const char * | text, | |||
int | ispdu | |||
) |
Sends text to a channel Write text to a display on a channel.
chan | channel to act upon | |
dest | destination number/user | |
text | string of text to send on the channel | |
ispdu | message is in PDU format |
Definition at line 2716 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(), ast_send_message(), handle_sendtext(), and sendtext_exec().
02717 { 02718 int res = 0; 02719 /* Stop if we're a zombie or need a soft hangup */ 02720 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02721 return -1; 02722 CHECK_BLOCKING(chan); 02723 if (chan->tech->send_text) 02724 res = chan->tech->send_text(chan, dest, text, ispdu); 02725 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02726 return res; 02727 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 3930 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, EVENT_FLAG_CALL, free, manager_event(), and S_OR.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), ast_send_message(), callerid_write(), disa_exec(), findmeexec(), handle_setcallerid(), lookupcidname_exec(), mgcp_ss(), privacy_exec(), read_config(), rpt_exec(), setcallerid_exec(), skinny_newcall(), ss_thread(), wait_for_answer(), and zt_read().
03931 { 03932 ast_channel_lock(chan); 03933 03934 if (callerid) { 03935 if (chan->cid.cid_num) 03936 free(chan->cid.cid_num); 03937 chan->cid.cid_num = ast_strdup(callerid); 03938 } 03939 if (calleridname) { 03940 if (chan->cid.cid_name) 03941 free(chan->cid.cid_name); 03942 chan->cid.cid_name = ast_strdup(calleridname); 03943 } 03944 if (ani) { 03945 if (chan->cid.cid_ani) 03946 free(chan->cid.cid_ani); 03947 chan->cid.cid_ani = ast_strdup(ani); 03948 } 03949 if (chan->cdr) 03950 ast_cdr_setcid(chan->cdr, chan); 03951 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03952 "Channel: %s\r\n" 03953 "CallerID: %s\r\n" 03954 "CallerIDName: %s\r\n" 03955 "Uniqueid: %s\r\n" 03956 "CID-CallingPres: %d (%s)\r\n", 03957 chan->name, 03958 S_OR(chan->cid.cid_num, "<Unknown>"), 03959 S_OR(chan->cid.cid_name, "<Unknown>"), 03960 chan->uniqueid, 03961 chan->cid.cid_pres, 03962 ast_describe_caller_presentation(chan->cid.cid_pres) 03963 ); 03964 03965 ast_channel_unlock(chan); 03966 }
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 3093 of file channel.c.
References ast_channel::rawreadformat, ast_channel::readformat, ast_channel::readtrans, and set_format().
Referenced by __ast_play_and_record(), __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_do_masquerade(), attempt_reconnect(), background_detect_exec(), build_conf(), conf_run(), connect_link(), dictate_exec(), disa_exec(), do_waiting(), eagi_exec(), echo_exec(), gtalk_rtp_read(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mgcp_rtp_read(), milliwatt_exec(), oh323_rtp_read(), process_sdp(), record_exec(), rpt(), rpt_exec(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), sms_exec(), socket_process(), speech_background(), update_features(), and xagi_exec().
03094 { 03095 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 03096 &chan->readtrans, 0); 03097 }
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 4735 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_app2(), and ast_pbx_outgoing_exten2().
04736 { 04737 struct ast_variable *cur; 04738 04739 for (cur = vars; cur; cur = cur->next) 04740 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04741 }
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 3099 of file channel.c.
References ast_channel::rawwriteformat, set_format(), ast_channel::writeformat, and ast_channel::writetrans.
Referenced by __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_channel_whisper_stop(), ast_do_masquerade(), ast_openstream_full(), ast_stopstream(), ast_write(), attempt_reconnect(), build_conf(), channel_spy(), chanspy_exec(), chanspychan_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(), NBScat_exec(), oh323_rtp_read(), playtones_alloc(), playtones_release(), process_sdp(), rpt(), rpt_exec(), send_waveform_to_channel(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), sms_exec(), socket_process(), tonepair_alloc(), tonepair_release(), update_features(), and xagi_exec().
03100 { 03101 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 03102 &chan->writetrans, 1); 03103 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 3993 of file channel.c.
References ast_setstate_and_cid().
Referenced by __ast_read(), __oh323_update_info(), __zt_exception(), agent_call(), alsa_answer(), ast_answer(), cb_events(), check_availability(), 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().
03994 { 03995 return ast_setstate_and_cid(chan, state, NULL, NULL); 03996 }
int ast_setstate_and_cid | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state, | |||
char * | cid_num, | |||
char * | cid_name | |||
) |
Change the state of a channel and the callerid of the calling channel.
Definition at line 3968 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, EVENT_FLAG_CALL, manager_event(), and S_OR.
Referenced by ast_setstate().
03969 { 03970 int oldstate = chan->_state; 03971 03972 if (oldstate == state) 03973 return 0; 03974 03975 chan->_state = state; 03976 ast_device_state_changed_literal(chan->name, cid_num, cid_name); 03977 /* setstate used to conditionally report Newchannel; this is no more */ 03978 manager_event(EVENT_FLAG_CALL, 03979 "Newstate", 03980 "Channel: %s\r\n" 03981 "State: %s\r\n" 03982 "CallerID: %s\r\n" 03983 "CallerIDName: %s\r\n" 03984 "Uniqueid: %s\r\n", 03985 chan->name, ast_state2str(chan->_state), 03986 S_OR(chan->cid.cid_num, "<unknown>"), 03987 S_OR(chan->cid.cid_name, "<unknown>"), 03988 chan->uniqueid); 03989 03990 return 0; 03991 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 2107 of file channel.c.
References ast_log(), func, 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().
02108 { 02109 int res = -1; 02110 #ifdef HAVE_ZAPTEL 02111 if (c->timingfd > -1) { 02112 if (!func) { 02113 samples = 0; 02114 data = 0; 02115 } 02116 if (option_debug) 02117 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 02118 res = ioctl(c->timingfd, ZT_TIMERCONFIG, &samples); 02119 c->timingfunc = func; 02120 c->timingdata = data; 02121 } 02122 #endif 02123 return res; 02124 }
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 480 of file channel.c.
References shutting_down.
Referenced by handle_request_options().
00481 { 00482 return shutting_down; 00483 }
int ast_softhangup | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup a channel, lock.
Softly hangup up a channel.
Definition at line 1600 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_softhangup_nolock().
Referenced by __ast_module_user_hangup_all(), __ast_pbx_run(), __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().
01601 { 01602 int res; 01603 ast_channel_lock(chan); 01604 res = ast_softhangup_nolock(chan, cause); 01605 ast_channel_unlock(chan); 01606 return res; 01607 }
int ast_softhangup_nolock | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup a channel, don't lock.
Softly hangup up a channel (no channel lock).
Definition at line 1586 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(), sip_indicate(), and skinny_indicate().
01587 { 01588 if (option_debug) 01589 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01590 /* Inform channel driver that we need to be hung up, if it cares */ 01591 chan->_softhangup |= cause; 01592 ast_queue_frame(chan, &ast_null_frame); 01593 /* Interrupt any poll call or such */ 01594 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01595 pthread_kill(chan->blocker, SIGURG); 01596 return 0; 01597 }
char* ast_state2str | ( | enum | ast_channel_state | ) |
Gives the string form of a given 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 619 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_channel_alloc(), ast_setstate_and_cid(), 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().
00620 { 00621 char *buf; 00622 00623 switch(state) { 00624 case AST_STATE_DOWN: 00625 return "Down"; 00626 case AST_STATE_RESERVED: 00627 return "Rsrvd"; 00628 case AST_STATE_OFFHOOK: 00629 return "OffHook"; 00630 case AST_STATE_DIALING: 00631 return "Dialing"; 00632 case AST_STATE_RING: 00633 return "Ring"; 00634 case AST_STATE_RINGING: 00635 return "Ringing"; 00636 case AST_STATE_UP: 00637 return "Up"; 00638 case AST_STATE_BUSY: 00639 return "Busy"; 00640 case AST_STATE_DIALING_OFFHOOK: 00641 return "Dialing Offhook"; 00642 case AST_STATE_PRERING: 00643 return "Pre-ring"; 00644 default: 00645 if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE))) 00646 return "Unknown"; 00647 snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state); 00648 return buf; 00649 } 00650 }
int ast_str2cause | ( | const char * | name | ) |
Convert a symbolic hangup cause to number.
Convert the string form of a cause code to a number
name | string form of the cause Returns the cause code |
Definition at line 607 of file channel.c.
References causes.
Referenced by pbx_builtin_hangup().
00608 { 00609 int x; 00610 00611 for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++) 00612 if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0) 00613 return causes[x].cause; 00614 00615 return -1; 00616 }
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 4607 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04608 { 04609 int res; 04610 04611 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04612 return res; 04613 04614 /* Give us some wiggle room */ 04615 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04616 struct ast_frame *f = ast_read(chan); 04617 if (f) 04618 ast_frfree(f); 04619 else 04620 return -1; 04621 } 04622 return 0; 04623 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4589 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().
04590 { 04591 struct tonepair_def d = { 0, }; 04592 04593 d.freq1 = freq1; 04594 d.freq2 = freq2; 04595 d.duration = duration; 04596 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04597 if (ast_activate_generator(chan, &tonepair, &d)) 04598 return -1; 04599 return 0; 04600 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4602 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04603 { 04604 ast_deactivate_generator(chan); 04605 }
int ast_transfer | ( | struct ast_channel * | chan, | |
char * | dest | |||
) |
Transfer a call to dest, if the channel supports transfer.
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested.
Called by:
Definition at line 3336 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().
03337 { 03338 int res = -1; 03339 03340 /* Stop if we're a zombie or need a soft hangup */ 03341 ast_channel_lock(chan); 03342 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03343 if (chan->tech->transfer) { 03344 res = chan->tech->transfer(chan, dest); 03345 if (!res) 03346 res = 1; 03347 } else 03348 res = 0; 03349 } 03350 ast_channel_unlock(chan); 03351 return res; 03352 }
char* ast_transfercapability2str | ( | int | transfercapability | ) | const |
Gives the string form of a given transfer capability.
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 653 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().
00654 { 00655 switch(transfercapability) { 00656 case AST_TRANS_CAP_SPEECH: 00657 return "SPEECH"; 00658 case AST_TRANS_CAP_DIGITAL: 00659 return "DIGITAL"; 00660 case AST_TRANS_CAP_RESTRICTED_DIGITAL: 00661 return "RESTRICTED_DIGITAL"; 00662 case AST_TRANS_CAP_3_1K_AUDIO: 00663 return "3K1AUDIO"; 00664 case AST_TRANS_CAP_DIGITAL_W_TONES: 00665 return "DIGITAL_W_TONES"; 00666 case AST_TRANS_CAP_VIDEO: 00667 return "VIDEO"; 00668 default: 00669 return "UNKNOWN"; 00670 } 00671 }
void ast_uninstall_music_functions | ( | void | ) |
Definition at line 4670 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
04671 { 04672 ast_moh_start_ptr = NULL; 04673 ast_moh_stop_ptr = NULL; 04674 ast_moh_cleanup_ptr = NULL; 04675 }
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 2091 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(), NBScat_exec(), receive_dtmf_digits(), record_exec(), recordthread(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), sms_exec(), speech_background(), ss_thread(), wait_for_hangup(), waitforring_exec(), and waitstream_core().
02092 { 02093 int oldms = ms; /* -1 if no timeout */ 02094 02095 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 02096 if ((ms < 0) && (oldms < 0)) 02097 ms = 0; 02098 return ms; 02099 }
struct ast_channel* ast_waitfor_n | ( | struct ast_channel ** | chan, | |
int | n, | |||
int * | ms | |||
) | [read] |
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 2086 of file channel.c.
References ast_waitfor_nandfds().
Referenced by ast_feature_request_and_dial(), ast_generic_bridge(), ast_udptl_bridge(), autoservice_run(), bridge_native_loop(), bridge_p2p_loop(), iax2_bridge(), misdn_bridge(), monitor_dial(), rpt(), rpt_exec(), wait_for_answer(), wait_for_winner(), and zt_bridge().
02087 { 02088 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 02089 }
int ast_waitfor_n_fd | ( | int * | fds, | |
int | n, | |||
int * | ms, | |||
int * | exception | |||
) |
Wait for x amount of time on a file descriptor to have input.
Waits for input on an fd This version works on fd's only. Be careful with it.
Definition at line 1931 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01932 { 01933 int winner = -1; 01934 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01935 return winner; 01936 }
struct ast_channel* ast_waitfor_nandfds | ( | struct ast_channel ** | c, | |
int | n, | |||
int * | fds, | |||
int | nfds, | |||
int * | exception, | |||
int * | outfd, | |||
int * | ms | |||
) | [read] |
Wait for x amount of time on a file descriptor to have input.
Waits for activity on a group of channels.
Definition at line 1939 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, ast_channel::fdno, LOG_WARNING, poll(), POLLPRI, pollfd::revents, 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().
01941 { 01942 struct timeval start = { 0 , 0 }; 01943 struct pollfd *pfds; 01944 int res; 01945 long rms; 01946 int x, y, max; 01947 int sz; 01948 time_t now = 0; 01949 long whentohangup = 0, diff; 01950 struct ast_channel *winner = NULL; 01951 struct fdmap { 01952 int chan; 01953 int fdno; 01954 } *fdmap; 01955 01956 sz = n * AST_MAX_FDS + nfds; 01957 pfds = alloca(sizeof(*pfds) * sz); 01958 fdmap = alloca(sizeof(*fdmap) * sz); 01959 01960 if (outfd) 01961 *outfd = -99999; 01962 if (exception) 01963 *exception = 0; 01964 01965 /* Perform any pending masquerades */ 01966 for (x=0; x < n; x++) { 01967 ast_channel_lock(c[x]); 01968 if (c[x]->masq) { 01969 if (ast_do_masquerade(c[x])) { 01970 ast_log(LOG_WARNING, "Masquerade failed\n"); 01971 *ms = -1; 01972 ast_channel_unlock(c[x]); 01973 return NULL; 01974 } 01975 } 01976 if (c[x]->whentohangup) { 01977 if (!whentohangup) 01978 time(&now); 01979 diff = c[x]->whentohangup - now; 01980 if (diff < 1) { 01981 /* Should already be hungup */ 01982 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01983 ast_channel_unlock(c[x]); 01984 return c[x]; 01985 } 01986 if (!whentohangup || (diff < whentohangup)) 01987 whentohangup = diff; 01988 } 01989 ast_channel_unlock(c[x]); 01990 } 01991 /* Wait full interval */ 01992 rms = *ms; 01993 if (whentohangup) { 01994 rms = whentohangup * 1000; /* timeout in milliseconds */ 01995 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01996 rms = *ms; 01997 } 01998 /* 01999 * Build the pollfd array, putting the channels' fds first, 02000 * followed by individual fds. Order is important because 02001 * individual fd's must have priority over channel fds. 02002 */ 02003 max = 0; 02004 for (x=0; x<n; x++) { 02005 for (y=0; y<AST_MAX_FDS; y++) { 02006 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 02007 fdmap[max].chan = x; /* channel x is linked to this pfds */ 02008 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 02009 } 02010 CHECK_BLOCKING(c[x]); 02011 } 02012 /* Add the individual fds */ 02013 for (x=0; x<nfds; x++) { 02014 fdmap[max].chan = -1; 02015 max += ast_add_fd(&pfds[max], fds[x]); 02016 } 02017 02018 if (*ms > 0) 02019 start = ast_tvnow(); 02020 02021 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 02022 do { 02023 int kbrms = rms; 02024 if (kbrms > 600000) 02025 kbrms = 600000; 02026 res = poll(pfds, max, kbrms); 02027 if (!res) 02028 rms -= kbrms; 02029 } while (!res && (rms > 0)); 02030 } else { 02031 res = poll(pfds, max, rms); 02032 } 02033 for (x=0; x<n; x++) 02034 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 02035 if (res < 0) { /* Simulate a timeout if we were interrupted */ 02036 if (errno != EINTR) 02037 *ms = -1; 02038 return NULL; 02039 } 02040 if (whentohangup) { /* if we have a timeout, check who expired */ 02041 time(&now); 02042 for (x=0; x<n; x++) { 02043 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 02044 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 02045 if (winner == NULL) 02046 winner = c[x]; 02047 } 02048 } 02049 } 02050 if (res == 0) { /* no fd ready, reset timeout and done */ 02051 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 02052 return winner; 02053 } 02054 /* 02055 * Then check if any channel or fd has a pending event. 02056 * Remember to check channels first and fds last, as they 02057 * must have priority on setting 'winner' 02058 */ 02059 for (x = 0; x < max; x++) { 02060 res = pfds[x].revents; 02061 if (res == 0) 02062 continue; 02063 if (fdmap[x].chan >= 0) { /* this is a channel */ 02064 winner = c[fdmap[x].chan]; /* override previous winners */ 02065 if (res & POLLPRI) 02066 ast_set_flag(winner, AST_FLAG_EXCEPTION); 02067 else 02068 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 02069 winner->fdno = fdmap[x].fdno; 02070 } else { /* this is an fd */ 02071 if (outfd) 02072 *outfd = pfds[x].fd; 02073 if (exception) 02074 *exception = (res & POLLPRI) ? -1 : 0; 02075 winner = NULL; 02076 } 02077 } 02078 if (*ms > 0) { 02079 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 02080 if (*ms < 0) 02081 *ms = 0; 02082 } 02083 return winner; 02084 }
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 2102 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(), testclient_exec(), testserver_exec(), vm_execmain(), vm_forwardoptions(), vm_instructions(), vm_options(), vm_tempgreeting(), wait_a_bit(), and wait_our_turn().
02103 { 02104 return ast_waitfordigit_full(c, ms, -1, -1); 02105 }
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 2126 of file channel.c.
References ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, AST_CONTROL_RINGING, 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(), ast_frame::data, ast_frame::datalen, errno, f, ast_frame::frametype, LOG_WARNING, and ast_frame::subclass.
Referenced by ast_readstring_full(), ast_waitfordigit(), handle_getoption(), and handle_waitfordigit().
02127 { 02128 /* Stop if we're a zombie or need a soft hangup */ 02129 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 02130 return -1; 02131 02132 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 02133 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 02134 02135 /* Wait for a digit, no more than ms milliseconds total. */ 02136 while (ms) { 02137 struct ast_channel *rchan; 02138 int outfd; 02139 02140 errno = 0; 02141 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 02142 if (!rchan && outfd < 0 && ms) { 02143 if (errno == 0 || errno == EINTR) 02144 continue; 02145 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 02146 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02147 return -1; 02148 } else if (outfd > -1) { 02149 /* The FD we were watching has something waiting */ 02150 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02151 return 1; 02152 } else if (rchan) { 02153 int res; 02154 struct ast_frame *f = ast_read(c); 02155 if (!f) 02156 return -1; 02157 02158 switch(f->frametype) { 02159 case AST_FRAME_DTMF_BEGIN: 02160 break; 02161 case AST_FRAME_DTMF_END: 02162 res = f->subclass; 02163 ast_frfree(f); 02164 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02165 return res; 02166 case AST_FRAME_CONTROL: 02167 switch(f->subclass) { 02168 case AST_CONTROL_HANGUP: 02169 ast_frfree(f); 02170 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02171 return -1; 02172 case AST_CONTROL_RINGING: 02173 case AST_CONTROL_ANSWER: 02174 /* Unimportant */ 02175 break; 02176 default: 02177 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 02178 break; 02179 } 02180 break; 02181 case AST_FRAME_VOICE: 02182 /* Write audio if appropriate */ 02183 if (audiofd > -1) 02184 write(audiofd, f->data, f->datalen); 02185 default: 02186 /* Ignore */ 02187 break; 02188 } 02189 ast_frfree(f); 02190 } 02191 } 02192 02193 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02194 02195 return 0; /* Time is up */ 02196 }
struct ast_channel* ast_walk_channel_by_exten_locked | ( | const struct ast_channel * | chan, | |
const char * | exten, | |||
const char * | context | |||
) | [read] |
Get next channel by exten (and optionally context) and lock it.
Definition at line 1162 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01164 { 01165 return channel_find_locked(chan, NULL, 0, context, exten, NULL); 01166 }
struct ast_channel* ast_walk_channel_by_name_prefix_locked | ( | const struct ast_channel * | chan, | |
const char * | name, | |||
const int | namelen | |||
) | [read] |
Get next channel by name prefix and lock it.
Get channel by name prefix (locks channel).
Definition at line 1149 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01151 { 01152 return channel_find_locked(chan, name, namelen, NULL, NULL, NULL); 01153 }
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 2827 of file channel.c.
References ast_channel::_softhangup, 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_WHISPER, AST_FLAG_WRITE_INT, AST_FLAG_ZOMBIE, AST_FORMAT_SLINEAR, ast_frame_adjust_volume(), 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_slinear_sum(), AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, ast_log(), AST_MONITOR_RUNNING, ast_mutex_lock(), ast_mutex_unlock(), ast_seekstream(), ast_senddigit_begin(), ast_senddigit_end(), ast_set_write_format(), ast_slinfactory_available(), ast_slinfactory_read(), AST_SOFTHANGUP_DEV, ast_test_flag, ast_translate(), ast_translator_build_path(), ast_translator_free_path(), ast_writestream(), 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, ast_channel_whisper_buffer::lock, LOG_DEBUG, LOG_WARNING, ast_channel::masq, ast_channel::masqr, ast_channel::monitor, option_debug, ast_channel_whisper_buffer::original_format, ast_channel::outsmpl, ast_channel_whisper_buffer::path, queue_frame_to_spies(), ast_channel::rawwriteformat, ast_frame::samples, SEEK_FORCECUR, ast_channel_tech::send_html, ast_channel_tech::send_text, ast_channel_whisper_buffer::sf, ast_channel::spies, SPY_WRITE, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel::whisper, ast_channel_tech::write, ast_channel_monitor::write_stream, ast_channel_tech::write_video, ast_channel::writeformat, and ast_channel::writetrans.
Referenced by adsi_careful_send(), agent_write(), ast_generic_bridge(), ast_prod(), ast_readaudio_callback(), ast_readvideo_callback(), ast_udptl_bridge(), ast_write_video(), bridge_native_loop(), bridge_p2p_loop(), conf_queue_dtmf(), conf_run(), dictate_exec(), echo_exec(), features_write(), function_ilink(), gen_generate(), handle_link_data(), iax2_bridge(), jb_get_and_deliver(), linear_generator(), milliwatt_generate(), misdn_bridge(), moh_files_generator(), moh_generate(), mp3_exec(), NBScat_exec(), playtones_generator(), rpt(), rpt_exec(), run_agi(), send_link_dtmf(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), sms_generate(), spy_generate(), tonepair_generator(), wait_for_answer(), and zt_bridge().
02828 { 02829 int res = -1; 02830 int count = 0; 02831 struct ast_frame *f = NULL; 02832 02833 /*Deadlock avoidance*/ 02834 while(ast_channel_trylock(chan)) { 02835 /*cannot goto done since the channel is not locked*/ 02836 if(count++ > 10) { 02837 if(option_debug) 02838 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 02839 return 0; 02840 } 02841 usleep(1); 02842 } 02843 /* Stop if we're a zombie or need a soft hangup */ 02844 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02845 goto done; 02846 02847 /* Handle any pending masquerades */ 02848 if (chan->masq && ast_do_masquerade(chan)) { 02849 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02850 goto done; 02851 } 02852 if (chan->masqr) { 02853 res = 0; /* XXX explain, why 0 ? */ 02854 goto done; 02855 } 02856 if (chan->generatordata) { 02857 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02858 ast_deactivate_generator(chan); 02859 else { 02860 if (fr->frametype == AST_FRAME_DTMF_END) { 02861 /* There is a generator running while we're in the middle of a digit. 02862 * It's probably inband DTMF, so go ahead and pass it so it can 02863 * stop the generator */ 02864 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02865 ast_channel_unlock(chan); 02866 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02867 ast_channel_lock(chan); 02868 CHECK_BLOCKING(chan); 02869 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 02870 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 02871 res = (chan->tech->indicate == NULL) ? 0 : 02872 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02873 } 02874 res = 0; /* XXX explain, why 0 ? */ 02875 goto done; 02876 } 02877 } 02878 /* High bit prints debugging */ 02879 if (chan->fout & DEBUGCHAN_FLAG) 02880 ast_frame_dump(chan->name, fr, ">>"); 02881 CHECK_BLOCKING(chan); 02882 switch(fr->frametype) { 02883 case AST_FRAME_CONTROL: 02884 res = (chan->tech->indicate == NULL) ? 0 : 02885 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02886 break; 02887 case AST_FRAME_DTMF_BEGIN: 02888 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02889 ast_channel_unlock(chan); 02890 res = ast_senddigit_begin(chan, fr->subclass); 02891 ast_channel_lock(chan); 02892 CHECK_BLOCKING(chan); 02893 break; 02894 case AST_FRAME_DTMF_END: 02895 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02896 ast_channel_unlock(chan); 02897 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02898 ast_channel_lock(chan); 02899 CHECK_BLOCKING(chan); 02900 break; 02901 case AST_FRAME_TEXT: 02902 res = (chan->tech->send_text == NULL) ? 0 : 02903 chan->tech->send_text(chan, NULL, (char *) fr->data, 0); 02904 break; 02905 case AST_FRAME_HTML: 02906 res = (chan->tech->send_html == NULL) ? 0 : 02907 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02908 break; 02909 case AST_FRAME_VIDEO: 02910 /* XXX Handle translation of video codecs one day XXX */ 02911 res = (chan->tech->write_video == NULL) ? 0 : 02912 chan->tech->write_video(chan, fr); 02913 break; 02914 case AST_FRAME_MODEM: 02915 res = (chan->tech->write == NULL) ? 0 : 02916 chan->tech->write(chan, fr); 02917 break; 02918 case AST_FRAME_VOICE: 02919 if (chan->tech->write == NULL) 02920 break; /*! \todo XXX should return 0 maybe ? */ 02921 02922 /* If someone is whispering on this channel then we must ensure that we are always getting signed linear frames */ 02923 if (ast_test_flag(chan, AST_FLAG_WHISPER)) { 02924 if (fr->subclass == AST_FORMAT_SLINEAR) 02925 f = fr; 02926 else { 02927 ast_mutex_lock(&chan->whisper->lock); 02928 if (chan->writeformat != AST_FORMAT_SLINEAR) { 02929 /* Rebuild the translation path and set our write format back to signed linear */ 02930 chan->whisper->original_format = chan->writeformat; 02931 ast_set_write_format(chan, AST_FORMAT_SLINEAR); 02932 if (chan->whisper->path) 02933 ast_translator_free_path(chan->whisper->path); 02934 chan->whisper->path = ast_translator_build_path(AST_FORMAT_SLINEAR, chan->whisper->original_format); 02935 } 02936 /* Translate frame using the above translation path */ 02937 f = (chan->whisper->path) ? ast_translate(chan->whisper->path, fr, 0) : fr; 02938 ast_mutex_unlock(&chan->whisper->lock); 02939 } 02940 } else { 02941 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02942 if (fr->subclass == chan->rawwriteformat) 02943 f = fr; 02944 else 02945 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02946 } 02947 02948 /* If we have no frame of audio, then we have to bail out */ 02949 if (f == NULL) { 02950 res = 0; 02951 break; 02952 } 02953 02954 /* If spies are on the channel then queue the frame out to them */ 02955 if (chan->spies) 02956 queue_frame_to_spies(chan, f, SPY_WRITE); 02957 02958 /* If Monitor is running on this channel, then we have to write frames out there too */ 02959 if (chan->monitor && chan->monitor->write_stream) { 02960 /* XXX must explain this code */ 02961 #ifndef MONITOR_CONSTANT_DELAY 02962 int jump = chan->insmpl - chan->outsmpl - 4 * f->samples; 02963 if (jump >= 0) { 02964 jump = chan->insmpl - chan->outsmpl; 02965 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 02966 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02967 chan->outsmpl += jump + f->samples; 02968 } else 02969 chan->outsmpl += f->samples; 02970 #else 02971 int jump = chan->insmpl - chan->outsmpl; 02972 if (jump - MONITOR_DELAY >= 0) { 02973 if (ast_seekstream(chan->monitor->write_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02974 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02975 chan->outsmpl += jump; 02976 } else 02977 chan->outsmpl += f->samples; 02978 #endif 02979 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02980 if (ast_writestream(chan->monitor->write_stream, f) < 0) 02981 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 02982 } 02983 } 02984 02985 /* Finally the good part! Write this out to the channel */ 02986 if (ast_test_flag(chan, AST_FLAG_WHISPER)) { 02987 /* frame is assumed to be in SLINEAR, since that is 02988 required for whisper mode */ 02989 ast_frame_adjust_volume(f, -2); 02990 if (ast_slinfactory_available(&chan->whisper->sf) >= f->samples) { 02991 short buf[f->samples]; 02992 struct ast_frame whisper = { 02993 .frametype = AST_FRAME_VOICE, 02994 .subclass = AST_FORMAT_SLINEAR, 02995 .data = buf, 02996 .datalen = sizeof(buf), 02997 .samples = f->samples, 02998 }; 02999 03000 ast_mutex_lock(&chan->whisper->lock); 03001 if (ast_slinfactory_read(&chan->whisper->sf, buf, f->samples)) 03002 ast_frame_slinear_sum(f, &whisper); 03003 ast_mutex_unlock(&chan->whisper->lock); 03004 } 03005 /* and now put it through the regular translator */ 03006 f = (chan->writetrans) ? ast_translate(chan->writetrans, f, 0) : f; 03007 } 03008 if (f) 03009 res = chan->tech->write(chan,f); 03010 else 03011 res = 0; 03012 break; 03013 case AST_FRAME_NULL: 03014 case AST_FRAME_IAX: 03015 /* Ignore these */ 03016 res = 0; 03017 break; 03018 default: 03019 /* At this point, fr is the incoming frame and f is NULL. Channels do 03020 * not expect to get NULL as a frame pointer and will segfault. Hence, 03021 * we output the original frame passed in. */ 03022 res = chan->tech->write(chan, fr); 03023 break; 03024 } 03025 03026 if (f && f != fr) 03027 ast_frfree(f); 03028 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03029 /* Consider a write failure to force a soft hangup */ 03030 if (res < 0) 03031 chan->_softhangup |= AST_SOFTHANGUP_DEV; 03032 else { 03033 chan->fout = FRAMECOUNT_INC(chan->fout); 03034 } 03035 done: 03036 ast_channel_unlock(chan); 03037 return res; 03038 }
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 2816 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02817 { 02818 int res; 02819 if (!chan->tech->write_video) 02820 return 0; 02821 res = ast_write(chan, fr); 02822 if (!res) 02823 res = 1; 02824 return res; 02825 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 4008 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().
04009 { 04010 int min = 0, sec = 0, check; 04011 04012 check = ast_autoservice_start(peer); 04013 if (check) 04014 return; 04015 04016 if (remain > 0) { 04017 if (remain / 60 > 1) { 04018 min = remain / 60; 04019 sec = remain % 60; 04020 } else { 04021 sec = remain; 04022 } 04023 } 04024 04025 if (!strcmp(sound,"timeleft")) { /* Queue support */ 04026 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 04027 if (min) { 04028 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 04029 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 04030 } 04031 if (sec) { 04032 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 04033 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 04034 } 04035 } else { 04036 ast_stream_and_wait(chan, sound, chan->language, ""); 04037 } 04038 04039 ast_autoservice_stop(peer); 04040 }
static struct ast_channel* channel_find_locked | ( | const struct ast_channel * | prev, | |
const char * | name, | |||
const int | namelen, | |||
const char * | context, | |||
const char * | exten, | |||
const char * | uniqueid | |||
) | [static, read] |
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 1045 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_get_channel_by_uniqueid_locked(), ast_walk_channel_by_exten_locked(), and ast_walk_channel_by_name_prefix_locked().
01048 { 01049 const char *msg = prev ? "deadlock" : "initial deadlock"; 01050 int retries; 01051 struct ast_channel *c; 01052 const struct ast_channel *_prev = prev; 01053 01054 for (retries = 0; retries < 10; retries++) { 01055 int done; 01056 AST_LIST_LOCK(&channels); 01057 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01058 prev = _prev; 01059 if (prev) { /* look for next item */ 01060 if (c != prev) /* not this one */ 01061 continue; 01062 /* found, prepare to return c->next */ 01063 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01064 /* If prev was the last item on the channel list, then we just 01065 * want to return NULL, instead of trying to deref NULL in the 01066 * next section. 01067 */ 01068 prev = NULL; 01069 /* We want prev to be NULL in case we end up doing more searching through 01070 * the channel list to find the channel (ie: name searching). If we didn't 01071 * set this to NULL the logic would just blow up 01072 * XXX Need a better explanation for this ... 01073 */ 01074 } 01075 if (uniqueid) { 01076 if (!strcasecmp(c->uniqueid, uniqueid)) 01077 break; 01078 } else if (name) { /* want match by name */ 01079 if ((!namelen && strcasecmp(c->name, name)) || 01080 (namelen && strncasecmp(c->name, name, namelen))) 01081 continue; /* name match failed */ 01082 } else if (exten) { 01083 if (context && strcasecmp(c->context, context) && 01084 strcasecmp(c->macrocontext, context)) 01085 continue; /* context match failed */ 01086 if (strcasecmp(c->exten, exten) && 01087 strcasecmp(c->macroexten, exten)) 01088 continue; /* exten match failed */ 01089 } 01090 /* if we get here, c points to the desired record */ 01091 break; 01092 } 01093 /* exit if chan not found or mutex acquired successfully */ 01094 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01095 done = c == NULL || ast_channel_trylock(c) == 0; 01096 if (!done) { 01097 if (option_debug) 01098 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01099 if (retries == 9) { 01100 /* We are about to fail due to a deadlock, so report this 01101 * while we still have the list lock. 01102 */ 01103 if (option_debug) 01104 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01105 /* As we have deadlocked, we will skip this channel and 01106 * see if there is another match. 01107 * NOTE: No point doing this for a full-name match, 01108 * as there can be no more matches. 01109 */ 01110 if (!(name && !namelen)) { 01111 prev = c; 01112 retries = -1; 01113 } 01114 } 01115 } 01116 AST_LIST_UNLOCK(&channels); 01117 if (done) 01118 return c; 01119 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01120 * starting from the beginning of the list we can restore our saved pointer to the previous 01121 * channel and start from there. 01122 */ 01123 prev = _prev; 01124 usleep(1); /* give other threads a chance before retrying */ 01125 } 01126 01127 return NULL; 01128 }
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 4964 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
Referenced by reload_config().
04965 { 04966 switch (reason) { 04967 case CHANNEL_MODULE_LOAD: 04968 return "LOAD (Channel module load)"; 04969 04970 case CHANNEL_MODULE_RELOAD: 04971 return "RELOAD (Channel module reload)"; 04972 04973 case CHANNEL_CLI_RELOAD: 04974 return "CLIRELOAD (Channel module reload by CLI command)"; 04975 04976 default: 04977 return "MANAGERRELOAD (Channel module reload by manager)"; 04978 } 04979 };
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 3618 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().
03619 { 03620 struct ast_var_t *current, *newvar; 03621 /* Append variables from clone channel into original channel */ 03622 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03623 if (AST_LIST_FIRST(&clone->varshead)) 03624 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03625 03626 /* then, dup the varshead list into the clone */ 03627 03628 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 03629 newvar = ast_var_assign(current->name, current->value); 03630 if (newvar) 03631 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 03632 } 03633 }
static char* complete_channeltypes | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 353 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00354 { 00355 struct chanlist *cl; 00356 int which = 0; 00357 int wordlen; 00358 char *ret = NULL; 00359 00360 if (pos != 3) 00361 return NULL; 00362 00363 wordlen = strlen(word); 00364 00365 AST_LIST_TRAVERSE(&backends, cl, list) { 00366 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00367 ret = strdup(cl->tech->type); 00368 break; 00369 } 00370 } 00371 00372 return ret; 00373 }
static char* complete_channeltypes_deprecated | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 331 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00332 { 00333 struct chanlist *cl; 00334 int which = 0; 00335 int wordlen; 00336 char *ret = NULL; 00337 00338 if (pos != 2) 00339 return NULL; 00340 00341 wordlen = strlen(word); 00342 00343 AST_LIST_TRAVERSE(&backends, cl, list) { 00344 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00345 ret = strdup(cl->tech->type); 00346 break; 00347 } 00348 } 00349 00350 return ret; 00351 }
static void copy_data_from_queue | ( | struct ast_channel_spy_queue * | queue, | |
short * | buf, | |||
unsigned int | samples | |||
) | [static] |
Definition at line 4743 of file channel.c.
References ast_codec_get_len(), ast_frfree, AST_LIST_FIRST, AST_LIST_REMOVE_HEAD, ast_log(), ast_frame::data, ast_frame::datalen, f, ast_channel_spy_queue::format, LOG_ERROR, ast_frame::offset, ast_channel_spy_queue::samples, and ast_frame::samples.
Referenced by ast_channel_spy_read_frame().
04744 { 04745 struct ast_frame *f; 04746 int tocopy; 04747 int bytestocopy; 04748 04749 while (samples) { 04750 if (!(f = AST_LIST_FIRST(&queue->list))) { 04751 ast_log(LOG_ERROR, "Ran out of frames before buffer filled!\n"); 04752 break; 04753 } 04754 04755 tocopy = (f->samples > samples) ? samples : f->samples; 04756 bytestocopy = ast_codec_get_len(queue->format, tocopy); 04757 memcpy(buf, f->data, bytestocopy); 04758 samples -= tocopy; 04759 buf += tocopy; 04760 f->samples -= tocopy; 04761 f->data += bytestocopy; 04762 f->datalen -= bytestocopy; 04763 f->offset += bytestocopy; 04764 queue->samples -= tocopy; 04765 04766 if (!f->samples) 04767 ast_frfree(AST_LIST_REMOVE_HEAD(&queue->list, frame_list)); 04768 } 04769 }
static void detach_spies | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 1569 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_channel::spies, spy_cleanup(), and spy_detach().
Referenced by ast_hangup().
01570 { 01571 struct ast_channel_spy *spy = NULL; 01572 01573 if (!chan->spies) 01574 return; 01575 01576 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) { 01577 AST_LIST_REMOVE_CURRENT(&chan->spies->list, list); 01578 spy_detach(spy, chan); 01579 } 01580 AST_LIST_TRAVERSE_SAFE_END 01581 01582 spy_cleanup(chan); 01583 }
static void free_cid | ( | struct ast_callerid * | cid | ) | [static] |
Definition at line 1200 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().
01201 { 01202 if (cid->cid_dnid) 01203 free(cid->cid_dnid); 01204 if (cid->cid_num) 01205 free(cid->cid_num); 01206 if (cid->cid_name) 01207 free(cid->cid_name); 01208 if (cid->cid_ani) 01209 free(cid->cid_ani); 01210 if (cid->cid_rdnis) 01211 free(cid->cid_rdnis); 01212 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1732 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().
01733 { 01734 if (clone->writetrans) 01735 ast_translator_free_path(clone->writetrans); 01736 if (clone->readtrans) 01737 ast_translator_free_path(clone->readtrans); 01738 clone->writetrans = NULL; 01739 clone->readtrans = NULL; 01740 clone->rawwriteformat = clone->nativeformats; 01741 clone->rawreadformat = clone->nativeformats; 01742 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1883 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_generator::generate, ast_channel::generator, ast_channel::generatordata, LOG_DEBUG, and option_debug.
Referenced by ast_activate_generator(), and ast_read_generator_actions().
01884 { 01885 /* Called if generator doesn't have data */ 01886 void *tmp; 01887 int res; 01888 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples); 01889 struct ast_channel *chan = (struct ast_channel *)data; 01890 tmp = chan->generatordata; 01891 chan->generatordata = NULL; 01892 generate = chan->generator->generate; 01893 res = generate(chan, tmp, 0, 160); 01894 chan->generatordata = tmp; 01895 if (res) { 01896 if (option_debug) 01897 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01898 ast_deactivate_generator(chan); 01899 } 01900 return 0; 01901 }
static void queue_frame_to_spies | ( | struct ast_channel * | chan, | |
struct ast_frame * | f, | |||
enum spy_direction | dir | |||
) | [static] |
Definition at line 1616 of file channel.c.
References ast_clear_flag, ast_cond_signal(), AST_FORMAT_SLINEAR, ast_frdup(), ast_frfree, ast_getformatname(), AST_LIST_INSERT_TAIL, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_set_flag, ast_test_flag, ast_translate(), ast_translator_build_path(), ast_translator_free_path(), CHANSPY_RUNNING, CHANSPY_TRIGGER_FLUSH, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, CHANSPY_TRIGGER_READ, CHANSPY_TRIGGER_WRITE, ast_channel_spy_queue::format, channel_spy_trans::last_format, ast_channel_spy::lock, LOG_DEBUG, LOG_ERROR, LOG_WARNING, option_debug, channel_spy_trans::path, ast_channel_spy::read_queue, ast_channel_spy_list::read_translator, ast_frame::samples, ast_channel_spy_queue::samples, ast_channel::spies, SPY_QUEUE_SAMPLE_LIMIT, SPY_READ, SPY_WRITE, ast_channel_spy::status, ast_frame::subclass, ast_channel_spy::trigger, ast_channel_spy::type, ast_channel_spy::write_queue, and ast_channel_spy_list::write_translator.
Referenced by __ast_read(), and ast_write().
01617 { 01618 struct ast_frame *translated_frame = NULL; 01619 struct ast_channel_spy *spy; 01620 struct channel_spy_trans *trans; 01621 01622 trans = (dir == SPY_READ) ? &chan->spies->read_translator : &chan->spies->write_translator; 01623 01624 AST_LIST_TRAVERSE(&chan->spies->list, spy, list) { 01625 struct ast_channel_spy_queue *queue; 01626 struct ast_frame *duped_fr; 01627 01628 if (spy->status != CHANSPY_RUNNING) 01629 continue; 01630 01631 ast_mutex_lock(&spy->lock); 01632 01633 queue = (dir == SPY_READ) ? &spy->read_queue : &spy->write_queue; 01634 01635 if ((queue->format == AST_FORMAT_SLINEAR) && (f->subclass != AST_FORMAT_SLINEAR)) { 01636 if (!translated_frame) { 01637 if (trans->path && (trans->last_format != f->subclass)) { 01638 ast_translator_free_path(trans->path); 01639 trans->path = NULL; 01640 } 01641 if (!trans->path) { 01642 if (option_debug) 01643 ast_log(LOG_DEBUG, "Building translator from %s to SLINEAR for spies on channel %s\n", 01644 ast_getformatname(f->subclass), chan->name); 01645 if ((trans->path = ast_translator_build_path(AST_FORMAT_SLINEAR, f->subclass)) == NULL) { 01646 ast_log(LOG_WARNING, "Cannot build a path from %s to %s\n", 01647 ast_getformatname(f->subclass), ast_getformatname(AST_FORMAT_SLINEAR)); 01648 ast_mutex_unlock(&spy->lock); 01649 continue; 01650 } else { 01651 trans->last_format = f->subclass; 01652 } 01653 } 01654 if (!(translated_frame = ast_translate(trans->path, f, 0))) { 01655 ast_log(LOG_ERROR, "Translation to %s failed, dropping frame for spies\n", 01656 ast_getformatname(AST_FORMAT_SLINEAR)); 01657 ast_mutex_unlock(&spy->lock); 01658 break; 01659 } 01660 } 01661 duped_fr = ast_frdup(translated_frame); 01662 } else if (f->subclass != queue->format) { 01663 ast_log(LOG_WARNING, "Spy '%s' on channel '%s' wants format '%s', but frame is '%s', dropping\n", 01664 spy->type, chan->name, 01665 ast_getformatname(queue->format), ast_getformatname(f->subclass)); 01666 ast_mutex_unlock(&spy->lock); 01667 continue; 01668 } else 01669 duped_fr = ast_frdup(f); 01670 01671 AST_LIST_INSERT_TAIL(&queue->list, duped_fr, frame_list); 01672 01673 queue->samples += f->samples; 01674 01675 if (queue->samples > SPY_QUEUE_SAMPLE_LIMIT) { 01676 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) { 01677 switch (ast_test_flag(spy, CHANSPY_TRIGGER_MODE)) { 01678 case CHANSPY_TRIGGER_READ: 01679 if (dir == SPY_WRITE) { 01680 ast_set_flag(spy, CHANSPY_TRIGGER_WRITE); 01681 ast_clear_flag(spy, CHANSPY_TRIGGER_READ); 01682 if (option_debug) 01683 ast_log(LOG_DEBUG, "Switching spy '%s' on '%s' to write-trigger mode\n", 01684 spy->type, chan->name); 01685 } 01686 break; 01687 case CHANSPY_TRIGGER_WRITE: 01688 if (dir == SPY_READ) { 01689 ast_set_flag(spy, CHANSPY_TRIGGER_READ); 01690 ast_clear_flag(spy, CHANSPY_TRIGGER_WRITE); 01691 if (option_debug) 01692 ast_log(LOG_DEBUG, "Switching spy '%s' on '%s' to read-trigger mode\n", 01693 spy->type, chan->name); 01694 } 01695 break; 01696 } 01697 if (option_debug) 01698 ast_log(LOG_DEBUG, "Triggering queue flush for spy '%s' on '%s'\n", 01699 spy->type, chan->name); 01700 ast_set_flag(spy, CHANSPY_TRIGGER_FLUSH); 01701 ast_cond_signal(&spy->trigger); 01702 } else { 01703 if (option_debug) 01704 ast_log(LOG_DEBUG, "Spy '%s' on channel '%s' %s queue too long, dropping frames\n", 01705 spy->type, chan->name, (dir == SPY_READ) ? "read" : "write"); 01706 while (queue->samples > SPY_QUEUE_SAMPLE_LIMIT) { 01707 struct ast_frame *drop = AST_LIST_REMOVE_HEAD(&queue->list, frame_list); 01708 queue->samples -= drop->samples; 01709 ast_frfree(drop); 01710 } 01711 } 01712 } else { 01713 switch (ast_test_flag(spy, CHANSPY_TRIGGER_MODE)) { 01714 case CHANSPY_TRIGGER_READ: 01715 if (dir == SPY_READ) 01716 ast_cond_signal(&spy->trigger); 01717 break; 01718 case CHANSPY_TRIGGER_WRITE: 01719 if (dir == SPY_WRITE) 01720 ast_cond_signal(&spy->trigger); 01721 break; 01722 } 01723 } 01724 01725 ast_mutex_unlock(&spy->lock); 01726 } 01727 01728 if (translated_frame) 01729 ast_frfree(translated_frame); 01730 }
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 3040 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, LOG_WARNING, ast_channel::nativeformats, and option_debug.
Referenced by ast_set_read_format(), and ast_set_write_format().
03042 { 03043 int native; 03044 int res; 03045 03046 /* Make sure we only consider audio */ 03047 fmt &= AST_FORMAT_AUDIO_MASK; 03048 03049 native = chan->nativeformats; 03050 /* Find a translation path from the native format to one of the desired formats */ 03051 if (!direction) 03052 /* reading */ 03053 res = ast_translator_best_choice(&fmt, &native); 03054 else 03055 /* writing */ 03056 res = ast_translator_best_choice(&native, &fmt); 03057 03058 if (res < 0) { 03059 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 03060 ast_getformatname(native), ast_getformatname(fmt)); 03061 return -1; 03062 } 03063 03064 /* Now we have a good choice for both. */ 03065 ast_channel_lock(chan); 03066 03067 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 03068 /* the channel is already in these formats, so nothing to do */ 03069 ast_channel_unlock(chan); 03070 return 0; 03071 } 03072 03073 *rawformat = native; 03074 /* User perspective is fmt */ 03075 *format = fmt; 03076 /* Free any read translation we have right now */ 03077 if (*trans) 03078 ast_translator_free_path(*trans); 03079 /* Build a translation path from the raw format to the desired format */ 03080 if (!direction) 03081 /* reading */ 03082 *trans = ast_translator_build_path(*format, *rawformat); 03083 else 03084 /* writing */ 03085 *trans = ast_translator_build_path(*rawformat, *format); 03086 ast_channel_unlock(chan); 03087 if (option_debug) 03088 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 03089 direction ? "write" : "read", ast_getformatname(fmt)); 03090 return 0; 03091 }
static int show_channeltype | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 278 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.
00279 { 00280 struct chanlist *cl = NULL; 00281 00282 if (argc != 4) 00283 return RESULT_SHOWUSAGE; 00284 00285 if (AST_LIST_LOCK(&channels)) { 00286 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00287 return RESULT_FAILURE; 00288 } 00289 00290 AST_LIST_TRAVERSE(&backends, cl, list) { 00291 if (!strncasecmp(cl->tech->type, argv[3], strlen(cl->tech->type))) { 00292 break; 00293 } 00294 } 00295 00296 00297 if (!cl) { 00298 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]); 00299 AST_LIST_UNLOCK(&channels); 00300 return RESULT_FAILURE; 00301 } 00302 00303 ast_cli(fd, 00304 "-- Info about channel driver: %s --\n" 00305 " Device State: %s\n" 00306 " Indication: %s\n" 00307 " Transfer : %s\n" 00308 " Capabilities: %d\n" 00309 " Digit Begin: %s\n" 00310 " Digit End: %s\n" 00311 " Send HTML : %s\n" 00312 " Image Support: %s\n" 00313 " Text Support: %s\n", 00314 cl->tech->type, 00315 (cl->tech->devicestate) ? "yes" : "no", 00316 (cl->tech->indicate) ? "yes" : "no", 00317 (cl->tech->transfer) ? "yes" : "no", 00318 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00319 (cl->tech->send_digit_begin) ? "yes" : "no", 00320 (cl->tech->send_digit_end) ? "yes" : "no", 00321 (cl->tech->send_html) ? "yes" : "no", 00322 (cl->tech->send_image) ? "yes" : "no", 00323 (cl->tech->send_text) ? "yes" : "no" 00324 00325 ); 00326 00327 AST_LIST_UNLOCK(&channels); 00328 return RESULT_SUCCESS; 00329 }
static int show_channeltype_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 225 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.
00226 { 00227 struct chanlist *cl = NULL; 00228 00229 if (argc != 3) 00230 return RESULT_SHOWUSAGE; 00231 00232 if (AST_LIST_LOCK(&channels)) { 00233 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00234 return RESULT_FAILURE; 00235 } 00236 00237 AST_LIST_TRAVERSE(&backends, cl, list) { 00238 if (!strncasecmp(cl->tech->type, argv[2], strlen(cl->tech->type))) { 00239 break; 00240 } 00241 } 00242 00243 00244 if (!cl) { 00245 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[2]); 00246 AST_LIST_UNLOCK(&channels); 00247 return RESULT_FAILURE; 00248 } 00249 00250 ast_cli(fd, 00251 "-- Info about channel driver: %s --\n" 00252 " Device State: %s\n" 00253 " Indication: %s\n" 00254 " Transfer : %s\n" 00255 " Capabilities: %d\n" 00256 " Digit Begin: %s\n" 00257 " Digit End: %s\n" 00258 " Send HTML : %s\n" 00259 " Image Support: %s\n" 00260 " Text Support: %s\n", 00261 cl->tech->type, 00262 (cl->tech->devicestate) ? "yes" : "no", 00263 (cl->tech->indicate) ? "yes" : "no", 00264 (cl->tech->transfer) ? "yes" : "no", 00265 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00266 (cl->tech->send_digit_begin) ? "yes" : "no", 00267 (cl->tech->send_digit_end) ? "yes" : "no", 00268 (cl->tech->send_html) ? "yes" : "no", 00269 (cl->tech->send_image) ? "yes" : "no", 00270 (cl->tech->send_text) ? "yes" : "no" 00271 00272 ); 00273 00274 AST_LIST_UNLOCK(&channels); 00275 return RESULT_SUCCESS; 00276 }
static int show_channeltypes | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 198 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.
00199 { 00200 #define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" 00201 struct chanlist *cl; 00202 int count_chan = 0; 00203 00204 ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer"); 00205 ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------"); 00206 if (AST_LIST_LOCK(&channels)) { 00207 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00208 return -1; 00209 } 00210 AST_LIST_TRAVERSE(&backends, cl, list) { 00211 ast_cli(fd, FORMAT, cl->tech->type, cl->tech->description, 00212 (cl->tech->devicestate) ? "yes" : "no", 00213 (cl->tech->indicate) ? "yes" : "no", 00214 (cl->tech->transfer) ? "yes" : "no"); 00215 count_chan++; 00216 } 00217 AST_LIST_UNLOCK(&channels); 00218 ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan); 00219 return RESULT_SUCCESS; 00220 00221 #undef FORMAT 00222 00223 }
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 4877 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04878 { 04879 short buf[samples]; 04880 struct ast_frame frame = { 04881 .frametype = AST_FRAME_VOICE, 04882 .subclass = AST_FORMAT_SLINEAR, 04883 .data = buf, 04884 .samples = samples, 04885 .datalen = sizeof(buf), 04886 }; 04887 memset(buf, 0, sizeof(buf)); 04888 if (ast_write(chan, &frame)) 04889 return -1; 04890 return 0; 04891 }
static void silence_generator_release | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static void spy_cleanup | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 1471 of file channel.c.
References AST_LIST_EMPTY, ast_translator_free_path(), free, channel_spy_trans::path, ast_channel_spy_list::read_translator, ast_channel::spies, and ast_channel_spy_list::write_translator.
Referenced by ast_channel_spy_remove(), ast_channel_spy_stop_by_type(), and detach_spies().
01472 { 01473 if (!AST_LIST_EMPTY(&chan->spies->list)) 01474 return; 01475 if (chan->spies->read_translator.path) 01476 ast_translator_free_path(chan->spies->read_translator.path); 01477 if (chan->spies->write_translator.path) 01478 ast_translator_free_path(chan->spies->write_translator.path); 01479 free(chan->spies); 01480 chan->spies = NULL; 01481 return; 01482 }
static void spy_detach | ( | struct ast_channel_spy * | spy, | |
struct ast_channel * | chan | |||
) | [static] |
Definition at line 1485 of file channel.c.
References ast_cond_signal(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_test_flag, ast_channel_spy::chan, CHANSPY_DONE, CHANSPY_STOP, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, ast_channel_spy::lock, LOG_DEBUG, option_debug, ast_channel_spy::status, ast_channel_spy::trigger, and ast_channel_spy::type.
Referenced by ast_channel_spy_remove(), ast_channel_spy_stop_by_type(), and detach_spies().
01486 { 01487 /* We only need to poke them if they aren't already done */ 01488 if (spy->status != CHANSPY_DONE) { 01489 ast_mutex_lock(&spy->lock); 01490 /* Indicate to the spy to stop */ 01491 spy->status = CHANSPY_STOP; 01492 spy->chan = NULL; 01493 /* Poke the spy if needed */ 01494 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) 01495 ast_cond_signal(&spy->trigger); 01496 if (option_debug) 01497 ast_log(LOG_DEBUG, "Spy %s removed from channel %s\n", spy->type, chan->name); 01498 ast_mutex_unlock(&spy->lock); 01499 } 01500 01501 return; 01502 }
static void* tonepair_alloc | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4507 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_state::duration, tonepair_state::fac1, tonepair_state::fac2, tonepair_def::freq1, tonepair_def::freq2, LOG_WARNING, tonepair_state::modulate, tonepair_state::origwfmt, tonepair_release(), tonepair_state::v1_1, tonepair_state::v2_1, tonepair_state::v2_2, tonepair_state::v3_1, tonepair_state::v3_2, tonepair_def::vol, and ast_channel::writeformat.
04508 { 04509 struct tonepair_state *ts; 04510 struct tonepair_def *td = params; 04511 04512 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04513 return NULL; 04514 ts->origwfmt = chan->writeformat; 04515 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04516 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04517 tonepair_release(NULL, ts); 04518 ts = NULL; 04519 } else { 04520 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04521 ts->v1_1 = 0; 04522 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04523 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04524 ts->v2_1 = 0; 04525 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04526 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04527 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04528 ts->duration = td->duration; 04529 ts->modulate = 0; 04530 } 04531 /* Let interrupts interrupt :) */ 04532 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04533 return ts; 04534 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4536 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_write(), ast_frame::data, tonepair_state::data, ast_frame::datalen, tonepair_state::duration, tonepair_state::f, tonepair_state::fac1, tonepair_state::fac2, ast_frame::frametype, LOG_WARNING, tonepair_state::modulate, ast_frame::offset, tonepair_state::pos, ast_frame::samples, ast_frame::subclass, 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.
04537 { 04538 struct tonepair_state *ts = data; 04539 int x; 04540 04541 /* we need to prepare a frame with 16 * timelen samples as we're 04542 * generating SLIN audio 04543 */ 04544 len = samples * 2; 04545 04546 if (len > sizeof(ts->data) / 2 - 1) { 04547 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04548 return -1; 04549 } 04550 memset(&ts->f, 0, sizeof(ts->f)); 04551 for (x=0;x<len/2;x++) { 04552 ts->v1_1 = ts->v2_1; 04553 ts->v2_1 = ts->v3_1; 04554 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04555 04556 ts->v1_2 = ts->v2_2; 04557 ts->v2_2 = ts->v3_2; 04558 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04559 if (ts->modulate) { 04560 int p; 04561 p = ts->v3_2 - 32768; 04562 if (p < 0) p = -p; 04563 p = ((p * 9) / 10) + 1; 04564 ts->data[x] = (ts->v3_1 * p) >> 15; 04565 } else 04566 ts->data[x] = ts->v3_1 + ts->v3_2; 04567 } 04568 ts->f.frametype = AST_FRAME_VOICE; 04569 ts->f.subclass = AST_FORMAT_SLINEAR; 04570 ts->f.datalen = len; 04571 ts->f.samples = samples; 04572 ts->f.offset = AST_FRIENDLY_OFFSET; 04573 ts->f.data = ts->data; 04574 ast_write(chan, &ts->f); 04575 ts->pos += x; 04576 if (ts->duration > 0) { 04577 if (ts->pos >= ts->duration * 8) 04578 return -1; 04579 } 04580 return 0; 04581 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4498 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04499 { 04500 struct tonepair_state *ts = params; 04501 04502 if (chan) 04503 ast_set_write_format(chan, ts->origwfmt); 04504 free(ts); 04505 }
void(* ast_moh_cleanup_ptr)(struct ast_channel *) = NULL [static] |
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] |
Referenced by ast_install_music_functions(), ast_moh_start(), and ast_uninstall_music_functions().
void(* ast_moh_stop_ptr)(struct ast_channel *) = NULL [static] |
Referenced by ast_install_music_functions(), ast_moh_stop(), and ast_uninstall_music_functions().
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] |
Initial value:
{ .type = "NULL", .description = "Null channel (should not see this)", }
Definition at line 722 of file channel.c.
Referenced by ast_channel_alloc().
char show_channeltype_usage[] [static] |
char show_channeltypes_usage[] [static] |
int shutting_down [static] |
Prevent new channel allocation if shutting down.
Definition at line 98 of file channel.c.
Referenced by ast_begin_shutdown(), ast_cancel_shutdown(), ast_channel_alloc(), and ast_shutting_down().
struct ast_generator silence_generator [static] |
Initial value:
{ .alloc = silence_generator_alloc, .release = silence_generator_release, .generate = silence_generator_generate, }
struct ast_generator tonepair [static] |
Initial value:
{ alloc: tonepair_alloc, release: tonepair_release, generate: tonepair_generator, }
Definition at line 4583 of file channel.c.
Referenced by ast_tonepair_start().
int uniqueint [static] |
Definition at line 100 of file channel.c.
Referenced by ast_alloc_uniqueid(), and ast_channel_alloc().