#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <math.h>
#include "asterisk/pbx.h"
#include "asterisk/frame.h"
#include "asterisk/sched.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/audiohook.h"
#include "asterisk/musiconhold.h"
#include "asterisk/logger.h"
#include "asterisk/say.h"
#include "asterisk/file.h"
#include "asterisk/cli.h"
#include "asterisk/translate.h"
#include "asterisk/manager.h"
#include "asterisk/chanvars.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/monitor.h"
#include "asterisk/causes.h"
#include "asterisk/callerid.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/transcap.h"
#include "asterisk/devicestate.h"
#include "asterisk/sha1.h"
#include "asterisk/threadstorage.h"
#include "asterisk/slinfactory.h"
Go to the source code of this file.
Data Structures | |
struct | ast_cause |
struct | ast_silence_generator |
struct | chanlist |
struct | tonepair_def |
struct | tonepair_state |
Defines | |
#define | AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
#define | AST_MIN_DTMF_DURATION 80 |
#define | AST_MIN_DTMF_GAP 45 |
#define | FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define | MONITOR_CONSTANT_DELAY |
#define | MONITOR_DELAY 150 * 8 |
#define | STATE2STR_BUFSIZE 32 |
Functions | |
static struct ast_frame * | __ast_read (struct ast_channel *chan, int dropaudio) |
ast_channel * | __ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cid_num, const char *cid_name, struct outgoing_helper *oh) |
int | ast_activate_generator (struct ast_channel *chan, struct ast_generator *gen, void *params) |
int | ast_active_channels (void) |
returns number of active/allocated channels | |
int | ast_answer (struct ast_channel *chan) |
Answer a ringing call. | |
void | ast_begin_shutdown (int hangup) |
Initiate system shutdown. | |
int | ast_best_codec (int fmts) |
Pick the best audio codec. | |
ast_channel * | ast_bridged_channel (struct ast_channel *chan) |
Find bridged channel. | |
int | ast_call (struct ast_channel *chan, char *addr, int timeout) |
Make a call. | |
void | ast_cancel_shutdown (void) |
Cancel a shutdown in progress. | |
const char * | ast_cause2str (int cause) |
Gives the string form of a given hangup cause. | |
void | ast_change_name (struct ast_channel *chan, char *newname) |
Change channel name. | |
ast_channel * | ast_channel_alloc (int needqueue, int state, const char *cid_num, const char *cid_name, const char *acctcode, const char *exten, const char *context, const int amaflag, const char *name_fmt,...) |
Create a channel structure. | |
enum ast_bridge_result | ast_channel_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc) |
Bridge two channels together. | |
int | ast_channel_cmpwhentohangup (struct ast_channel *chan, time_t offset) |
Compare a offset with the settings of when to hang a channel up. | |
int | ast_channel_datastore_add (struct ast_channel *chan, struct ast_datastore *datastore) |
Add a datastore to a channel. | |
ast_datastore * | ast_channel_datastore_alloc (const struct ast_datastore_info *info, char *uid) |
Create a channel datastore structure. | |
ast_datastore * | ast_channel_datastore_find (struct ast_channel *chan, const struct ast_datastore_info *info, char *uid) |
Find a datastore on a channel. | |
int | ast_channel_datastore_free (struct ast_datastore *datastore) |
Free a channel datastore structure. | |
int | ast_channel_datastore_inherit (struct ast_channel *from, struct ast_channel *to) |
Inherit datastores from a parent to a child. | |
int | ast_channel_datastore_remove (struct ast_channel *chan, struct ast_datastore *datastore) |
Remove a datastore from a channel. | |
int | ast_channel_defer_dtmf (struct ast_channel *chan) |
Set defer DTMF flag on channel. | |
void | ast_channel_free (struct ast_channel *chan) |
Free a channel structure. | |
void | ast_channel_inherit_variables (const struct ast_channel *parent, struct ast_channel *child) |
Inherits channel variable from parent to child channel. | |
int | ast_channel_make_compatible (struct ast_channel *chan, struct ast_channel *peer) |
Makes two channel formats compatible. | |
int | ast_channel_masquerade (struct ast_channel *original, struct ast_channel *clone) |
Weird function made for call transfers. | |
char * | ast_channel_reason2str (int reason) |
return an english explanation of the code returned thru __ast_request_and_dial's 'outstate' argument | |
int | ast_channel_register (const struct ast_channel_tech *tech) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports. | |
int | ast_channel_sendhtml (struct ast_channel *chan, int subclass, const char *data, int datalen) |
int | ast_channel_sendurl (struct ast_channel *chan, const char *url) |
int | ast_channel_setoption (struct ast_channel *chan, int option, void *data, int datalen, int block) |
Sets an option on a channel. | |
void | ast_channel_setwhentohangup (struct ast_channel *chan, time_t offset) |
Set when to hang a channel up. | |
ast_silence_generator * | ast_channel_start_silence_generator (struct ast_channel *chan) |
Starts a silence generator on the given channel. | |
void | ast_channel_stop_silence_generator (struct ast_channel *chan, struct ast_silence_generator *state) |
Stops a previously-started silence generator on the given channel. | |
int | ast_channel_supports_html (struct ast_channel *chan) |
void | ast_channel_undefer_dtmf (struct ast_channel *chan) |
Unset defer DTMF flag on channel. | |
void | ast_channel_unregister (const struct ast_channel_tech *tech) |
Unregister a channel technology. | |
ast_channel * | ast_channel_walk_locked (const struct ast_channel *prev) |
Browse channels in use Browse the channels currently in use. | |
void | ast_channels_init (void) |
ast_variable * | ast_channeltype_list (void) |
return an ast_variable list of channeltypes | |
int | ast_check_hangup (struct ast_channel *chan) |
Check to see if a channel is needing hang up. | |
static int | ast_check_hangup_locked (struct ast_channel *chan) |
void | ast_deactivate_generator (struct ast_channel *chan) |
int | ast_do_masquerade (struct ast_channel *original) |
Start masquerading a channel XXX This is a seriously wacked out operation. We're essentially putting the guts of the clone channel into the original channel. Start by killing off the original channel's backend. I'm not sure we're going to keep this function, because while the features are nice, the cost is very high in terms of pure nastiness. XXX. | |
static enum ast_bridge_result | ast_generic_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc, struct timeval bridge_end) |
ast_channel * | ast_get_channel_by_exten_locked (const char *exten, const char *context) |
Get channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_get_channel_by_name_locked (const char *name) |
Get channel by name (locks channel). | |
ast_channel * | ast_get_channel_by_name_prefix_locked (const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
ast_channel_tech * | ast_get_channel_tech (const char *name) |
Get a channel technology structure by name. | |
ast_group_t | ast_get_group (const char *s) |
int | ast_hangup (struct ast_channel *chan) |
Hang up a channel. | |
int | ast_indicate (struct ast_channel *chan, int condition) |
Indicates condition of channel. | |
int | ast_indicate_data (struct ast_channel *chan, int condition, const void *data, size_t datalen) |
Indicates condition of channel, with payload. | |
void | ast_install_music_functions (int(*start_ptr)(struct ast_channel *, const char *, const char *), void(*stop_ptr)(struct ast_channel *), void(*cleanup_ptr)(struct ast_channel *)) |
int | ast_internal_timing_enabled (struct ast_channel *chan) |
Check if the channel can run in internal timing mode. | |
static | AST_LIST_HEAD_NOLOCK_STATIC (backends, chanlist) |
static | AST_LIST_HEAD_STATIC (channels, ast_channel) |
void | ast_moh_cleanup (struct ast_channel *chan) |
int | ast_moh_start (struct ast_channel *chan, const char *mclass, const char *interpclass) |
Turn on music on hold on a given channel. | |
void | ast_moh_stop (struct ast_channel *chan) |
Turn off music on hold on a given channel. | |
char * | ast_print_group (char *buf, int buflen, ast_group_t group) |
print call- and pickup groups into buffer | |
int | ast_prod (struct ast_channel *chan) |
Send empty audio to prime a channel driver. | |
int | ast_queue_control (struct ast_channel *chan, enum ast_control_frame_type control) |
Queue a control frame with payload. | |
int | ast_queue_control_data (struct ast_channel *chan, enum ast_control_frame_type control, const void *data, size_t datalen) |
Queue a control frame with payload. | |
int | ast_queue_frame (struct ast_channel *chan, struct ast_frame *fin) |
Queue an outgoing frame. | |
int | ast_queue_hangup (struct ast_channel *chan) |
Queue a hangup frame. | |
ast_frame * | ast_read (struct ast_channel *chan) |
Reads a frame. | |
static void | ast_read_generator_actions (struct ast_channel *chan, struct ast_frame *f) |
ast_frame * | ast_read_noaudio (struct ast_channel *chan) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame. | |
int | ast_readstring (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders) |
int | ast_readstring_full (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders, int audiofd, int ctrlfd) |
int | ast_recvchar (struct ast_channel *chan, int timeout) |
Receives a text character from a channel. | |
char * | ast_recvtext (struct ast_channel *chan, int timeout) |
Receives a text string from a channel Read a string of text from a channel. | |
ast_channel * | ast_request (const char *type, int format, void *data, int *cause) |
Requests a channel. | |
ast_channel * | ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cidnum, const char *cidname) |
Request a channel of a given type, with data as optional information used by the low level module and attempt to place a call on it. | |
int | ast_safe_sleep (struct ast_channel *chan, int ms) |
Wait for a specied amount of time, looking for hangups. | |
int | ast_safe_sleep_conditional (struct ast_channel *chan, int ms, int(*cond)(void *), void *data) |
Wait for a specied amount of time, looking for hangups and a condition argument. | |
char * | ast_safe_string_alloc (const char *fmt,...) |
printf the string into a correctly sized mallocd buffer, and return the buffer | |
int | ast_say_character_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digit_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digits (struct ast_channel *chan, int num, const char *ints, const char *lang) |
int | ast_say_digits_full (struct ast_channel *chan, int num, const char *ints, const char *lang, int audiofd, int ctrlfd) |
int | ast_say_enumeration (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_number (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_phonetic_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_senddigit (struct ast_channel *chan, char digit) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_begin (struct ast_channel *chan, char digit) |
int | ast_senddigit_end (struct ast_channel *chan, char digit, unsigned int duration) |
int | ast_sendtext (struct ast_channel *chan, const char *text) |
Sends text to a channel Write text to a display on a channel. | |
void | ast_set_callerid (struct ast_channel *chan, const char *callerid, const char *calleridname, const char *ani) |
int | ast_set_read_format (struct ast_channel *chan, int fmt) |
Sets read format on channel chan Set read format for channel to whichever component of "format" is best. | |
void | ast_set_variables (struct ast_channel *chan, struct ast_variable *vars) |
adds a list of channel variables to a channel | |
int | ast_set_write_format (struct ast_channel *chan, int fmt) |
Sets write format on channel chan Set write format for channel to whichever compoent of "format" is best. | |
int | ast_setstate (struct ast_channel *chan, enum ast_channel_state state) |
Change the state of a channel. | |
int | ast_settimeout (struct ast_channel *c, int samples, int(*func)(const void *data), void *data) |
int | ast_shutting_down (void) |
Returns non-zero if Asterisk is being shut down. | |
int | ast_softhangup (struct ast_channel *chan, int cause) |
Softly hangup up a channel. | |
int | ast_softhangup_nolock (struct ast_channel *chan, int cause) |
Softly hangup up a channel (no channel lock). | |
char * | ast_state2str (enum ast_channel_state state) |
Gives the string form of a given channel state. | |
int | ast_str2cause (const char *name) |
Convert a symbolic hangup cause to number. | |
AST_THREADSTORAGE (state2str_threadbuf, state2str_threadbuf_init) | |
int | ast_tonepair (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
int | ast_tonepair_start (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
void | ast_tonepair_stop (struct ast_channel *chan) |
int | ast_transfer (struct ast_channel *chan, char *dest) |
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested. | |
char * | ast_transfercapability2str (int transfercapability) |
Gives the string form of a given transfer capability. | |
void | ast_uninstall_music_functions (void) |
int | ast_waitfor (struct ast_channel *c, int ms) |
Wait for input on a channel. | |
ast_channel * | ast_waitfor_n (struct ast_channel **c, int n, int *ms) |
Waits for input on a group of channels Wait for input on an array of channels for a given # of milliseconds. | |
int | ast_waitfor_n_fd (int *fds, int n, int *ms, int *exception) |
Waits for input on an fd This version works on fd's only. Be careful with it. | |
ast_channel * | ast_waitfor_nandfds (struct ast_channel **c, int n, int *fds, int nfds, int *exception, int *outfd, int *ms) |
Waits for activity on a group of channels. | |
int | ast_waitfordigit (struct ast_channel *c, int ms) |
Waits for a digit. | |
int | ast_waitfordigit_full (struct ast_channel *c, int ms, int audiofd, int cmdfd) |
Wait for a digit Same as ast_waitfordigit() with audio fd for outputting read audio and ctrlfd to monitor for reading. | |
ast_channel * | ast_walk_channel_by_exten_locked (const struct ast_channel *chan, const char *exten, const char *context) |
Get next channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_walk_channel_by_name_prefix_locked (const struct ast_channel *chan, const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
int | ast_write (struct ast_channel *chan, struct ast_frame *fr) |
Write a frame to a channel This function writes the given frame to the indicated channel. | |
int | ast_write_video (struct ast_channel *chan, struct ast_frame *fr) |
Write video frame to a channel This function writes the given frame to the indicated channel. | |
static void | bridge_playfile (struct ast_channel *chan, struct ast_channel *peer, const char *sound, int remain) |
static struct ast_channel * | channel_find_locked (const struct ast_channel *prev, const char *name, const int namelen, const char *context, const char *exten) |
Helper function to find channels. | |
const char * | channelreloadreason2txt (enum channelreloadreason reason) |
Convert enum channelreloadreason to text string for manager event. | |
static void | clone_variables (struct ast_channel *original, struct ast_channel *clone) |
Clone channel variables from 'clone' channel into 'original' channel. | |
static char * | complete_channeltypes (const char *line, const char *word, int pos, int state) |
static char * | complete_channeltypes_deprecated (const char *line, const char *word, int pos, int state) |
static void | free_cid (struct ast_callerid *cid) |
static void | free_translation (struct ast_channel *clone) |
static int | generator_force (const void *data) |
static int | set_format (struct ast_channel *chan, int fmt, int *rawformat, int *format, struct ast_trans_pvt **trans, const int direction) |
static int | show_channeltype (int fd, int argc, char *argv[]) |
static int | show_channeltype_deprecated (int fd, int argc, char *argv[]) |
static int | show_channeltypes (int fd, int argc, char *argv[]) |
static void * | silence_generator_alloc (struct ast_channel *chan, void *data) |
static int | silence_generator_generate (struct ast_channel *chan, void *data, int len, int samples) |
static void | silence_generator_release (struct ast_channel *chan, void *data) |
static void * | tonepair_alloc (struct ast_channel *chan, void *params) |
static int | tonepair_generator (struct ast_channel *chan, void *data, int len, int samples) |
static void | tonepair_release (struct ast_channel *chan, void *params) |
Variables | |
static void(*) | ast_moh_cleanup_ptr (struct ast_channel *) = NULL |
static int(*) | ast_moh_start_ptr (struct ast_channel *, const char *, const char *) = NULL |
static void(*) | ast_moh_stop_ptr (struct ast_channel *) = NULL |
ast_cause | causes [] |
static struct ast_cli_entry | cli_channel [] |
static struct ast_cli_entry | cli_show_channeltype_deprecated |
static struct ast_cli_entry | cli_show_channeltypes_deprecated |
unsigned long | global_fin |
unsigned long | global_fout |
static struct ast_channel_tech | null_tech |
static char | show_channeltype_usage [] |
static char | show_channeltypes_usage [] |
static int | shutting_down |
static struct ast_generator | silence_generator |
static struct ast_generator | tonepair |
static int | uniqueint |
Definition in file channel.c.
#define AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
Default amount of time to use when emulating a digit as a begin and end 100ms
Definition at line 89 of file channel.c.
Referenced by __ast_read(), and ast_senddigit().
#define AST_MIN_DTMF_DURATION 80 |
Minimum allowed digit length - 80ms
Definition at line 92 of file channel.c.
Referenced by __ast_read().
#define AST_MIN_DTMF_GAP 45 |
Minimum amount of time between the end of the last digit and the beginning of a new one - 45ms
Definition at line 96 of file channel.c.
Referenced by __ast_read().
#define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define MONITOR_DELAY 150 * 8 |
#define STATE2STR_BUFSIZE 32 |
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 1967 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::alertpipe, AST_AUDIOHOOK_DIRECTION_READ, ast_audiohook_write_list(), ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, ast_deactivate_generator(), AST_DEFAULT_EMULATE_DTMF_DURATION, ast_do_masquerade(), AST_FLAG_DEFER_DTMF, AST_FLAG_EMULATE_DTMF, AST_FLAG_END_DTMF_ONLY, AST_FLAG_EXCEPTION, AST_FLAG_IN_DTMF, AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_NULL, AST_FRAME_VOICE, ast_frfree, AST_GENERATOR_FD, ast_getformatname(), ast_getformatname_multiple(), AST_LIST_EMPTY, AST_LIST_FIRST, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_NEXT, AST_LIST_REMOVE_HEAD, ast_log(), AST_MIN_DTMF_DURATION, AST_MIN_DTMF_GAP, AST_MONITOR_RUNNING, ast_null_frame, ast_read_generator_actions(), ast_seekstream(), ast_set_flag, ast_setstate(), AST_SOFTHANGUP_DEV, AST_STATE_UP, ast_strlen_zero(), ast_test_flag, AST_TIMING_FD, ast_translate(), ast_writestream(), ast_channel::audiohooks, ast_channel::blocker, ast_frame::data, DEBUGCHAN_FLAG, ast_channel::dtmf_tv, ast_channel::dtmff, ast_channel::dtmfq, ast_channel::emulate_dtmf_digit, ast_channel::emulate_dtmf_duration, errno, ast_channel_tech::exception, f, ast_channel::fdno, ast_channel::fds, ast_channel::fin, ast_frame::flags, FRAMECOUNT_INC, ast_frame::frametype, func, ast_generator::generate, ast_channel::generator, ast_channel::generatordata, ast_channel::insmpl, LOG_DEBUG, LOG_DTMF, LOG_ERROR, LOG_NOTICE, LOG_WARNING, ast_channel::masq, ast_channel::monitor, MONITOR_DELAY, ast_channel::nativeformats, option_debug, ast_channel::outsmpl, ast_channel_tech::read, ast_channel_monitor::read_stream, ast_channel::readtrans, SEEK_FORCECUR, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_read(), and ast_read_noaudio().
01968 { 01969 struct ast_frame *f = NULL; /* the return value */ 01970 int blah; 01971 int prestate; 01972 int count = 0; 01973 01974 /* this function is very long so make sure there is only one return 01975 * point at the end (there are only two exceptions to this). 01976 */ 01977 while(ast_channel_trylock(chan)) { 01978 if(count++ > 10) 01979 /*cannot goto done since the channel is not locked*/ 01980 return &ast_null_frame; 01981 usleep(1); 01982 } 01983 01984 if (chan->masq) { 01985 if (ast_do_masquerade(chan)) 01986 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01987 else 01988 f = &ast_null_frame; 01989 goto done; 01990 } 01991 01992 /* Stop if we're a zombie or need a soft hangup */ 01993 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01994 if (chan->generator) 01995 ast_deactivate_generator(chan); 01996 goto done; 01997 } 01998 prestate = chan->_state; 01999 02000 if (!ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF | AST_FLAG_IN_DTMF) && 02001 !ast_strlen_zero(chan->dtmfq) && 02002 (ast_tvzero(chan->dtmf_tv) || ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) > AST_MIN_DTMF_GAP) ) { 02003 /* We have DTMF that has been deferred. Return it now */ 02004 chan->dtmff.subclass = chan->dtmfq[0]; 02005 /* Drop first digit from the buffer */ 02006 memmove(chan->dtmfq, chan->dtmfq + 1, sizeof(chan->dtmfq) - 1); 02007 f = &chan->dtmff; 02008 if (ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02009 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02010 chan->dtmff.frametype = AST_FRAME_DTMF_END; 02011 } else { 02012 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); 02013 chan->dtmff.frametype = AST_FRAME_DTMF_BEGIN; 02014 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02015 chan->emulate_dtmf_digit = f->subclass; 02016 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02017 } 02018 chan->dtmf_tv = ast_tvnow(); 02019 goto done; 02020 } 02021 02022 /* Read and ignore anything on the alertpipe, but read only 02023 one sizeof(blah) per frame that we send from it */ 02024 if (chan->alertpipe[0] > -1) { 02025 int flags = fcntl(chan->alertpipe[0], F_GETFL); 02026 /* For some odd reason, the alertpipe occasionally loses nonblocking status, 02027 * which immediately causes a deadlock scenario. Detect and prevent this. */ 02028 if ((flags & O_NONBLOCK) == 0) { 02029 ast_log(LOG_ERROR, "Alertpipe on channel %s lost O_NONBLOCK?!!\n", chan->name); 02030 if (fcntl(chan->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 02031 ast_log(LOG_WARNING, "Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 02032 f = &ast_null_frame; 02033 goto done; 02034 } 02035 } 02036 read(chan->alertpipe[0], &blah, sizeof(blah)); 02037 } 02038 02039 #ifdef HAVE_DAHDI 02040 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02041 int res; 02042 02043 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02044 blah = -1; 02045 /* IF we can't get event, assume it's an expired as-per the old interface */ 02046 res = ioctl(chan->timingfd, DAHDI_GETEVENT, &blah); 02047 if (res) 02048 blah = DAHDI_EVENT_TIMER_EXPIRED; 02049 02050 if (blah == DAHDI_EVENT_TIMER_PING) { 02051 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02052 /* Acknowledge PONG unless we need it again */ 02053 if (ioctl(chan->timingfd, DAHDI_TIMERPONG, &blah)) { 02054 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02055 } 02056 } 02057 } else if (blah == DAHDI_EVENT_TIMER_EXPIRED) { 02058 ioctl(chan->timingfd, DAHDI_TIMERACK, &blah); 02059 if (chan->timingfunc) { 02060 /* save a copy of func/data before unlocking the channel */ 02061 int (*func)(const void *) = chan->timingfunc; 02062 void *data = chan->timingdata; 02063 ast_channel_unlock(chan); 02064 func(data); 02065 } else { 02066 blah = 0; 02067 ioctl(chan->timingfd, DAHDI_TIMERCONFIG, &blah); 02068 chan->timingdata = NULL; 02069 ast_channel_unlock(chan); 02070 } 02071 /* cannot 'goto done' because the channel is already unlocked */ 02072 return &ast_null_frame; 02073 } else 02074 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02075 } else 02076 #endif 02077 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02078 /* if the AST_GENERATOR_FD is set, call the generator with args 02079 * set to -1 so it can do whatever it needs to. 02080 */ 02081 void *tmp = chan->generatordata; 02082 chan->generatordata = NULL; /* reset to let ast_write get through */ 02083 chan->generator->generate(chan, tmp, -1, -1); 02084 chan->generatordata = tmp; 02085 f = &ast_null_frame; 02086 goto done; 02087 } 02088 02089 /* Check for pending read queue */ 02090 if (!AST_LIST_EMPTY(&chan->readq)) { 02091 f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list); 02092 /* Interpret hangup and return NULL */ 02093 /* XXX why not the same for frames from the channel ? */ 02094 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02095 ast_frfree(f); 02096 f = NULL; 02097 } 02098 } else { 02099 chan->blocker = pthread_self(); 02100 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02101 if (chan->tech->exception) 02102 f = chan->tech->exception(chan); 02103 else { 02104 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02105 f = &ast_null_frame; 02106 } 02107 /* Clear the exception flag */ 02108 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02109 } else if (chan->tech->read) 02110 f = chan->tech->read(chan); 02111 else 02112 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02113 } 02114 02115 if (f) { 02116 /* if the channel driver returned more than one frame, stuff the excess 02117 into the readq for the next ast_read call (note that we can safely assume 02118 that the readq is empty, because otherwise we would not have called into 02119 the channel driver and f would be only a single frame) 02120 */ 02121 if (AST_LIST_NEXT(f, frame_list)) { 02122 AST_LIST_HEAD_SET_NOLOCK(&chan->readq, AST_LIST_NEXT(f, frame_list)); 02123 AST_LIST_NEXT(f, frame_list) = NULL; 02124 } 02125 02126 switch (f->frametype) { 02127 case AST_FRAME_CONTROL: 02128 if (f->subclass == AST_CONTROL_ANSWER) { 02129 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02130 if (option_debug) 02131 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02132 ast_frfree(f); 02133 f = &ast_null_frame; 02134 } else if (prestate == AST_STATE_UP) { 02135 if (option_debug) 02136 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02137 ast_frfree(f); 02138 f = &ast_null_frame; 02139 } else { 02140 /* Answer the CDR */ 02141 ast_setstate(chan, AST_STATE_UP); 02142 /* removed a call to ast_cdr_answer(chan->cdr) from here. */ 02143 } 02144 } 02145 break; 02146 case AST_FRAME_DTMF_END: 02147 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02148 /* Queue it up if DTMF is deffered, or if DTMF emulation is forced. 02149 * However, only let emulation be forced if the other end cares about BEGIN frames */ 02150 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || 02151 (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) ) { 02152 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) { 02153 ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name); 02154 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02155 } else 02156 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02157 ast_frfree(f); 02158 f = &ast_null_frame; 02159 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02160 if (!ast_tvzero(chan->dtmf_tv) && 02161 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02162 /* If it hasn't been long enough, defer this digit */ 02163 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) { 02164 ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name); 02165 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02166 } else 02167 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02168 ast_frfree(f); 02169 f = &ast_null_frame; 02170 } else { 02171 /* There was no begin, turn this into a begin and send the end later */ 02172 f->frametype = AST_FRAME_DTMF_BEGIN; 02173 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02174 chan->emulate_dtmf_digit = f->subclass; 02175 chan->dtmf_tv = ast_tvnow(); 02176 if (f->len) { 02177 if (f->len > AST_MIN_DTMF_DURATION) 02178 chan->emulate_dtmf_duration = f->len; 02179 else 02180 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02181 } else 02182 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02183 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02184 } 02185 if (chan->audiohooks) { 02186 struct ast_frame *old_frame = f; 02187 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02188 if (old_frame != f) 02189 ast_frfree(old_frame); 02190 } 02191 } else { 02192 struct timeval now = ast_tvnow(); 02193 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02194 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02195 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02196 if (!f->len) 02197 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02198 } else if (!f->len) { 02199 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02200 f->len = AST_MIN_DTMF_DURATION; 02201 } 02202 if (f->len < AST_MIN_DTMF_DURATION && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02203 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); 02204 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02205 chan->emulate_dtmf_digit = f->subclass; 02206 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02207 ast_frfree(f); 02208 f = &ast_null_frame; 02209 } else { 02210 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02211 if (f->len < AST_MIN_DTMF_DURATION) { 02212 f->len = AST_MIN_DTMF_DURATION; 02213 } 02214 chan->dtmf_tv = now; 02215 } 02216 if (chan->audiohooks) { 02217 struct ast_frame *old_frame = f; 02218 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02219 if (old_frame != f) 02220 ast_frfree(old_frame); 02221 } 02222 } 02223 break; 02224 case AST_FRAME_DTMF_BEGIN: 02225 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02226 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 02227 (!ast_tvzero(chan->dtmf_tv) && 02228 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02229 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02230 ast_frfree(f); 02231 f = &ast_null_frame; 02232 } else { 02233 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02234 chan->dtmf_tv = ast_tvnow(); 02235 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02236 } 02237 break; 02238 case AST_FRAME_NULL: 02239 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02240 * is reached , because we want to make sure we pass at least one 02241 * voice frame through before starting the next digit, to ensure a gap 02242 * between DTMF digits. */ 02243 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02244 struct timeval now = ast_tvnow(); 02245 if (!chan->emulate_dtmf_duration) { 02246 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02247 chan->emulate_dtmf_digit = 0; 02248 } else if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02249 chan->emulate_dtmf_duration = 0; 02250 ast_frfree(f); 02251 f = &chan->dtmff; 02252 f->frametype = AST_FRAME_DTMF_END; 02253 f->subclass = chan->emulate_dtmf_digit; 02254 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02255 chan->dtmf_tv = now; 02256 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02257 chan->emulate_dtmf_digit = 0; 02258 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02259 } 02260 } 02261 break; 02262 case AST_FRAME_VOICE: 02263 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02264 * is reached , because we want to make sure we pass at least one 02265 * voice frame through before starting the next digit, to ensure a gap 02266 * between DTMF digits. */ 02267 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02268 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02269 chan->emulate_dtmf_digit = 0; 02270 } 02271 02272 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02273 if (dropaudio) 02274 ast_read_generator_actions(chan, f); 02275 ast_frfree(f); 02276 f = &ast_null_frame; 02277 } 02278 02279 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02280 struct timeval now = ast_tvnow(); 02281 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02282 chan->emulate_dtmf_duration = 0; 02283 ast_frfree(f); 02284 f = &chan->dtmff; 02285 f->frametype = AST_FRAME_DTMF_END; 02286 f->subclass = chan->emulate_dtmf_digit; 02287 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02288 chan->dtmf_tv = now; 02289 if (chan->audiohooks) { 02290 struct ast_frame *old_frame = f; 02291 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02292 if (old_frame != f) 02293 ast_frfree(old_frame); 02294 } 02295 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02296 } else { 02297 /* Drop voice frames while we're still in the middle of the digit */ 02298 ast_frfree(f); 02299 f = &ast_null_frame; 02300 } 02301 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02302 /* This frame is not one of the current native formats -- drop it on the floor */ 02303 char to[200]; 02304 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02305 chan->name, ast_getformatname(f->subclass), ast_getformatname_multiple(to, sizeof(to), chan->nativeformats)); 02306 ast_frfree(f); 02307 f = &ast_null_frame; 02308 } else if ((f->frametype == AST_FRAME_VOICE)) { 02309 if (chan->audiohooks) { 02310 struct ast_frame *old_frame = f; 02311 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02312 if (old_frame != f) 02313 ast_frfree(old_frame); 02314 } 02315 if (chan->monitor && chan->monitor->read_stream ) { 02316 /* XXX what does this do ? */ 02317 #ifndef MONITOR_CONSTANT_DELAY 02318 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02319 if (jump >= 0) { 02320 jump = chan->outsmpl - chan->insmpl; 02321 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02322 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02323 chan->insmpl += jump + f->samples; 02324 } else 02325 chan->insmpl+= f->samples; 02326 #else 02327 int jump = chan->outsmpl - chan->insmpl; 02328 if (jump - MONITOR_DELAY >= 0) { 02329 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02330 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02331 chan->insmpl += jump; 02332 } else 02333 chan->insmpl += f->samples; 02334 #endif 02335 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02336 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02337 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02338 } 02339 } 02340 02341 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) 02342 f = &ast_null_frame; 02343 02344 /* Run generator sitting on the line if timing device not available 02345 * and synchronous generation of outgoing frames is necessary */ 02346 ast_read_generator_actions(chan, f); 02347 } 02348 default: 02349 /* Just pass it on! */ 02350 break; 02351 } 02352 } else { 02353 /* Make sure we always return NULL in the future */ 02354 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02355 if (chan->generator) 02356 ast_deactivate_generator(chan); 02357 /* We no longer End the CDR here */ 02358 } 02359 02360 /* High bit prints debugging */ 02361 if (chan->fin & DEBUGCHAN_FLAG) 02362 ast_frame_dump(chan->name, f, "<<"); 02363 chan->fin = FRAMECOUNT_INC(chan->fin); 02364 02365 done: 02366 ast_channel_unlock(chan); 02367 return f; 02368 }
struct ast_channel* __ast_request_and_dial | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int | timeout, | |||
int * | outstate, | |||
const char * | cid_num, | |||
const char * | cid_name, | |||
struct outgoing_helper * | oh | |||
) |
Definition at line 2882 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, AST_CAUSE_NO_ANSWER, ast_cdr_alloc(), ast_cdr_disposition(), ast_cdr_end(), ast_cdr_failed(), ast_cdr_init(), ast_cdr_setaccount(), ast_cdr_setapp(), ast_cdr_start(), ast_cdr_update(), ast_channel_inherit_variables(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FRAME_CONTROL, ast_frfree, ast_hangup(), ast_log(), ast_read(), ast_request(), ast_set_callerid(), ast_set_variables(), AST_STATE_UP, ast_strlen_zero(), ast_waitfor(), ast_channel::cdr, outgoing_helper::cid_name, outgoing_helper::cid_num, outgoing_helper::context, ast_channel::context, outgoing_helper::exten, ast_channel::exten, f, ast_channel::hangupcause, LOG_NOTICE, outgoing_helper::parent_channel, outgoing_helper::priority, ast_channel::priority, and outgoing_helper::vars.
Referenced by ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_request_and_dial(), and parkandannounce_exec().
02883 { 02884 int dummy_outstate; 02885 int cause = 0; 02886 struct ast_channel *chan; 02887 int res = 0; 02888 int last_subclass = 0; 02889 02890 if (outstate) 02891 *outstate = 0; 02892 else 02893 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 02894 02895 chan = ast_request(type, format, data, &cause); 02896 if (!chan) { 02897 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 02898 /* compute error and return */ 02899 if (cause == AST_CAUSE_BUSY) 02900 *outstate = AST_CONTROL_BUSY; 02901 else if (cause == AST_CAUSE_CONGESTION) 02902 *outstate = AST_CONTROL_CONGESTION; 02903 return NULL; 02904 } 02905 02906 if (oh) { 02907 if (oh->vars) 02908 ast_set_variables(chan, oh->vars); 02909 /* XXX why is this necessary, for the parent_channel perhaps ? */ 02910 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 02911 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 02912 if (oh->parent_channel) 02913 ast_channel_inherit_variables(oh->parent_channel, chan); 02914 if (oh->account) 02915 ast_cdr_setaccount(chan, oh->account); 02916 } 02917 ast_set_callerid(chan, cid_num, cid_name, cid_num); 02918 02919 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 02920 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 02921 } else { 02922 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 02923 while (timeout && chan->_state != AST_STATE_UP) { 02924 struct ast_frame *f; 02925 res = ast_waitfor(chan, timeout); 02926 if (res <= 0) /* error, timeout, or done */ 02927 break; 02928 if (timeout > -1) 02929 timeout = res; 02930 f = ast_read(chan); 02931 if (!f) { 02932 *outstate = AST_CONTROL_HANGUP; 02933 res = 0; 02934 break; 02935 } 02936 if (f->frametype == AST_FRAME_CONTROL) { 02937 switch (f->subclass) { 02938 case AST_CONTROL_RINGING: /* record but keep going */ 02939 *outstate = f->subclass; 02940 break; 02941 02942 case AST_CONTROL_BUSY: 02943 case AST_CONTROL_CONGESTION: 02944 case AST_CONTROL_ANSWER: 02945 *outstate = f->subclass; 02946 timeout = 0; /* trick to force exit from the while() */ 02947 break; 02948 02949 /* Ignore these */ 02950 case AST_CONTROL_PROGRESS: 02951 case AST_CONTROL_PROCEEDING: 02952 case AST_CONTROL_HOLD: 02953 case AST_CONTROL_UNHOLD: 02954 case AST_CONTROL_VIDUPDATE: 02955 case AST_CONTROL_SRCUPDATE: 02956 case -1: /* Ignore -- just stopping indications */ 02957 break; 02958 02959 default: 02960 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 02961 } 02962 last_subclass = f->subclass; 02963 } 02964 ast_frfree(f); 02965 } 02966 } 02967 02968 /* Final fixups */ 02969 if (oh) { 02970 if (!ast_strlen_zero(oh->context)) 02971 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 02972 if (!ast_strlen_zero(oh->exten)) 02973 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 02974 if (oh->priority) 02975 chan->priority = oh->priority; 02976 } 02977 if (chan->_state == AST_STATE_UP) 02978 *outstate = AST_CONTROL_ANSWER; 02979 02980 if (res <= 0) { 02981 if ( AST_CONTROL_RINGING == last_subclass ) 02982 chan->hangupcause = AST_CAUSE_NO_ANSWER; 02983 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 02984 ast_cdr_init(chan->cdr, chan); 02985 if (chan->cdr) { 02986 char tmp[256]; 02987 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 02988 ast_cdr_setapp(chan->cdr,"Dial",tmp); 02989 ast_cdr_update(chan); 02990 ast_cdr_start(chan->cdr); 02991 ast_cdr_end(chan->cdr); 02992 /* If the cause wasn't handled properly */ 02993 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 02994 ast_cdr_failed(chan->cdr); 02995 } 02996 ast_hangup(chan); 02997 chan = NULL; 02998 } 02999 return chan; 03000 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1616 of file channel.c.
References ast_generator::alloc, ast_channel_lock, ast_channel_unlock, ast_prod(), ast_settimeout(), gen, ast_channel::generator, generator_force(), ast_channel::generatordata, and ast_generator::release.
Referenced by app_exec(), ast_channel_start_silence_generator(), ast_linear_stream(), ast_playtones_start(), ast_tonepair_start(), channel_spy(), local_ast_moh_start(), and old_milliwatt_exec().
01617 { 01618 int res = 0; 01619 01620 ast_channel_lock(chan); 01621 01622 if (chan->generatordata) { 01623 if (chan->generator && chan->generator->release) 01624 chan->generator->release(chan, chan->generatordata); 01625 chan->generatordata = NULL; 01626 } 01627 01628 ast_prod(chan); 01629 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01630 res = -1; 01631 } 01632 01633 if (!res) { 01634 ast_settimeout(chan, 160, generator_force, chan); 01635 chan->generator = gen; 01636 } 01637 01638 ast_channel_unlock(chan); 01639 01640 return res; 01641 }
int ast_active_channels | ( | void | ) |
returns number of active/allocated channels
Returns number of active/allocated channels
Definition at line 443 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, and channels.
Referenced by action_corestatus(), dahdi_restart(), handle_show_settings(), and quit_handler().
00444 { 00445 struct ast_channel *c; 00446 int cnt = 0; 00447 AST_LIST_LOCK(&channels); 00448 AST_LIST_TRAVERSE(&channels, c, chan_list) 00449 cnt++; 00450 AST_LIST_UNLOCK(&channels); 00451 return cnt; 00452 }
int ast_answer | ( | struct ast_channel * | chan | ) |
Answer a ringing call.
chan | channel to answer This function answers a channel and handles all necessary call setup functions. |
Definition at line 1538 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_bridge_call(), ast_control_streamfile(), ast_pickup_call(), auth_exec(), background_detect_exec(), builtin_parkcall(), common_exec(), conf_exec(), count_exec(), dictate_exec(), directory_exec(), disa_exec(), exec(), features_answer(), handle_answer(), ices_exec(), old_milliwatt_exec(), park_call_exec(), park_exec(), pbx_builtin_answer(), pbx_builtin_background(), pickup_do(), playback_exec(), privacy_exec(), read_exec(), run_station(), sayunixtime_exec(), send_waveform_to_channel(), skel_exec(), sla_handle_dial_state_event(), sla_station_exec(), speech_background(), testclient_exec(), testserver_exec(), vm_exec(), vm_execmain(), waitforsilence_exec(), and zapateller_exec().
01539 { 01540 int res = 0; 01541 ast_channel_lock(chan); 01542 /* You can't answer an outbound call */ 01543 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01544 ast_channel_unlock(chan); 01545 return 0; 01546 } 01547 /* Stop if we're a zombie or need a soft hangup */ 01548 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01549 ast_channel_unlock(chan); 01550 return -1; 01551 } 01552 switch(chan->_state) { 01553 case AST_STATE_RINGING: 01554 case AST_STATE_RING: 01555 if (chan->tech->answer) 01556 res = chan->tech->answer(chan); 01557 ast_setstate(chan, AST_STATE_UP); 01558 ast_cdr_answer(chan->cdr); 01559 break; 01560 case AST_STATE_UP: 01561 break; 01562 default: 01563 break; 01564 } 01565 chan->visible_indication = 0; 01566 ast_channel_unlock(chan); 01567 return res; 01568 }
void ast_begin_shutdown | ( | int | hangup | ) |
Initiate system shutdown.
Initiate system shutdown -- prevents new channels from being allocated. If "hangup" is non-zero, all existing channels will receive soft hangups
Definition at line 430 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_softhangup(), AST_SOFTHANGUP_SHUTDOWN, and channels.
Referenced by quit_handler().
00431 { 00432 struct ast_channel *c; 00433 shutting_down = 1; 00434 if (hangup) { 00435 AST_LIST_LOCK(&channels); 00436 AST_LIST_TRAVERSE(&channels, c, chan_list) 00437 ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN); 00438 AST_LIST_UNLOCK(&channels); 00439 } 00440 }
int ast_best_codec | ( | int | fmts | ) |
Pick the best audio codec.
Pick the best codec
Okay, ulaw is used by all telephony equipment, so start with it
Unless of course, you're a silly European, so then prefer ALAW
G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority
Okay, well, signed linear is easy to translate into other stuff
G.726 is standard ADPCM, in RFC3551 packing order
G.726 is standard ADPCM, in AAL2 packing order
ADPCM has great sound quality and is still pretty easy to translate
Okay, we're down to vocoders now, so pick GSM because it's small and easier to translate and sounds pretty good
iLBC is not too bad
Speex is free, but computationally more expensive than GSM
Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough to use it
G.729a is faster than 723 and slightly less expensive
Down to G.723.1 which is proprietary but at least designed for voice
Definition at line 655 of file channel.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_AUDIO_MASK, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_log(), LOG_WARNING, and prefs.
Referenced by __login_exec(), __oh323_new(), agent_call(), ast_codec_choose(), ast_iax2_new(), do_atxfer(), echo_exec(), findmeexec(), gtalk_new(), handle_open_receive_channel_ack_message(), iax2_request(), local_new(), mgcp_new(), sip_new(), skinny_new(), socket_process(), and transmit_connect().
00656 { 00657 /* This just our opinion, expressed in code. We are asked to choose 00658 the best codec to use, given no information */ 00659 int x; 00660 static int prefs[] = 00661 { 00662 /*! Okay, ulaw is used by all telephony equipment, so start with it */ 00663 AST_FORMAT_ULAW, 00664 /*! Unless of course, you're a silly European, so then prefer ALAW */ 00665 AST_FORMAT_ALAW, 00666 /*! G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority */ 00667 AST_FORMAT_G722, 00668 /*! Okay, well, signed linear is easy to translate into other stuff */ 00669 AST_FORMAT_SLINEAR, 00670 /*! G.726 is standard ADPCM, in RFC3551 packing order */ 00671 AST_FORMAT_G726, 00672 /*! G.726 is standard ADPCM, in AAL2 packing order */ 00673 AST_FORMAT_G726_AAL2, 00674 /*! ADPCM has great sound quality and is still pretty easy to translate */ 00675 AST_FORMAT_ADPCM, 00676 /*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to 00677 translate and sounds pretty good */ 00678 AST_FORMAT_GSM, 00679 /*! iLBC is not too bad */ 00680 AST_FORMAT_ILBC, 00681 /*! Speex is free, but computationally more expensive than GSM */ 00682 AST_FORMAT_SPEEX, 00683 /*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough 00684 to use it */ 00685 AST_FORMAT_LPC10, 00686 /*! G.729a is faster than 723 and slightly less expensive */ 00687 AST_FORMAT_G729A, 00688 /*! Down to G.723.1 which is proprietary but at least designed for voice */ 00689 AST_FORMAT_G723_1, 00690 }; 00691 00692 /* Strip out video */ 00693 fmts &= AST_FORMAT_AUDIO_MASK; 00694 00695 /* Find the first preferred codec in the format given */ 00696 for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++) 00697 if (fmts & prefs[x]) 00698 return prefs[x]; 00699 ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts); 00700 return 0; 00701 }
struct ast_channel* ast_bridged_channel | ( | struct ast_channel * | chan | ) |
Find bridged channel.
chan | Current channel |
Definition at line 3718 of file channel.c.
References ast_channel::_bridge, ast_channel_tech::bridged_channel, and ast_channel::tech.
Referenced by __dahdi_exception(), action_agents(), agents_show(), agents_show_online(), ast_channel_masquerade(), attempt_transfer(), cb_events(), check_bridge(), common_exec(), console_transfer(), console_transfer_deprecated(), create_jb(), dahdi_handle_event(), dahdi_hangup(), export_aoc_vars(), handle_chanlist(), handle_chanlist_deprecated(), handle_hd_hf(), handle_invite_replaces(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response_invite(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_hangup(), mgcp_ss(), misdn_transfer_bc(), mixmonitor_thread(), park_call_full(), schedule_delivery(), sip_read(), socket_process(), ss_thread(), start_spying(), and startmon().
03719 { 03720 struct ast_channel *bridged; 03721 bridged = chan->_bridge; 03722 if (bridged && bridged->tech->bridged_channel) 03723 bridged = bridged->tech->bridged_channel(chan, bridged); 03724 return bridged; 03725 }
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 3057 of file channel.c.
References AST_CDR_FLAG_DIALED, ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, ast_set_flag, ast_test_flag, ast_channel_tech::call, ast_channel::cdr, and ast_channel::tech.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), connect_link(), features_call(), findmeexec(), ring_entry(), rpt(), and wait_for_answer().
03058 { 03059 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03060 If the remote end does not answer within the timeout, then do NOT hang up, but 03061 return anyway. */ 03062 int res = -1; 03063 /* Stop if we're a zombie or need a soft hangup */ 03064 ast_channel_lock(chan); 03065 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03066 if (chan->cdr) 03067 ast_set_flag(chan->cdr, AST_CDR_FLAG_DIALED); 03068 if (chan->tech->call) 03069 res = chan->tech->call(chan, addr, timeout); 03070 ast_set_flag(chan, AST_FLAG_OUTGOING); 03071 } 03072 ast_channel_unlock(chan); 03073 return res; 03074 }
void ast_cancel_shutdown | ( | void | ) |
Cancel a shutdown in progress.
Cancels an existing shutdown and returns to normal operation
Definition at line 455 of file channel.c.
Referenced by handle_abort_halt().
00456 { 00457 shutting_down = 0; 00458 }
const char* ast_cause2str | ( | int | state | ) |
Gives the string form of a given hangup cause.
state | cause to get the description of Give a name to a cause code Returns the text form of the binary cause code given |
Definition at line 575 of file channel.c.
Referenced by __transmit_response(), ast_do_masquerade(), ast_hangup(), findmeexec(), pbx_retrieve_variable(), sip_hangup(), and transmit_request_with_auth().
00576 { 00577 int x; 00578 00579 for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) { 00580 if (causes[x].cause == cause) 00581 return causes[x].desc; 00582 } 00583 00584 return "Unknown"; 00585 }
void ast_change_name | ( | struct ast_channel * | chan, | |
char * | newname | |||
) |
Change channel name.
Definition at line 3307 of file channel.c.
References ast_string_field_set, EVENT_FLAG_CALL, manager_event(), and name.
03308 { 03309 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03310 ast_string_field_set(chan, name, newname); 03311 }
struct ast_channel* ast_channel_alloc | ( | int | needqueue, | |
int | state, | |||
const char * | cid_num, | |||
const char * | cid_name, | |||
const char * | acctcode, | |||
const char * | exten, | |||
const char * | context, | |||
const int | amaflag, | |||
const char * | name_fmt, | |||
... | ||||
) |
Create a channel structure.
Definition at line 709 of file channel.c.
References accountcode, 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_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, channels, defaultlanguage, errno, EVENT_FLAG_CALL, ast_channel::flags, free, HAVE_ZAPTEL, language, LOG_WARNING, manager_event(), name, null_tech, S_OR, sched_context_create(), and sched_context_destroy().
Referenced by __oh323_new(), acf_odbc_read(), acf_odbc_write(), agent_new(), alsa_new(), ast_async_goto(), ast_iax2_new(), ast_masq_park_call(), ast_pbx_outgoing_cdr_failed(), ast_pbx_outgoing_exten(), check_goto_on_transfer(), dahdi_new(), do_atxfer(), features_new(), gtalk_new(), iax_park(), local_new(), make_email_file(), mgcp_new(), misdn_new(), nbs_new(), oss_new(), pbx_substitute_variables_helper_full(), phone_new(), sendpage(), sip_new(), sip_park(), and skinny_new().
00710 { 00711 struct ast_channel *tmp; 00712 int x; 00713 int flags; 00714 struct varshead *headp; 00715 va_list ap1, ap2; 00716 00717 /* If shutting down, don't allocate any new channels */ 00718 if (shutting_down) { 00719 ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n"); 00720 return NULL; 00721 } 00722 00723 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) 00724 return NULL; 00725 00726 if (!(tmp->sched = sched_context_create())) { 00727 ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n"); 00728 free(tmp); 00729 return NULL; 00730 } 00731 00732 if ((ast_string_field_init(tmp, 128))) { 00733 sched_context_destroy(tmp->sched); 00734 free(tmp); 00735 return NULL; 00736 } 00737 00738 /* Don't bother initializing the last two FD here, because they 00739 will *always* be set just a few lines down (AST_TIMING_FD, 00740 AST_ALERT_FD). */ 00741 for (x = 0; x < AST_MAX_FDS - 2; x++) 00742 tmp->fds[x] = -1; 00743 00744 #ifdef HAVE_DAHDI 00745 00746 #ifdef HAVE_ZAPTEL 00747 tmp->timingfd = open("/dev/zap/timer", O_RDWR); 00748 #else 00749 tmp->timingfd = open("/dev/dahdi/timer", O_RDWR); 00750 #endif 00751 00752 if (tmp->timingfd > -1) { 00753 /* Check if timing interface supports new 00754 ping/pong scheme */ 00755 flags = 1; 00756 if (!ioctl(tmp->timingfd, DAHDI_TIMERPONG, &flags)) 00757 needqueue = 0; 00758 } 00759 #else 00760 tmp->timingfd = -1; 00761 #endif 00762 00763 if (needqueue) { 00764 if (pipe(tmp->alertpipe)) { 00765 ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe!\n"); 00766 alertpipe_failed: 00767 #ifdef HAVE_DAHDI 00768 if (tmp->timingfd > -1) 00769 close(tmp->timingfd); 00770 #endif 00771 sched_context_destroy(tmp->sched); 00772 ast_string_field_free_memory(tmp); 00773 free(tmp); 00774 return NULL; 00775 } else { 00776 flags = fcntl(tmp->alertpipe[0], F_GETFL); 00777 if (fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 00778 ast_log(LOG_WARNING, "Channel allocation failed: Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 00779 close(tmp->alertpipe[0]); 00780 close(tmp->alertpipe[1]); 00781 goto alertpipe_failed; 00782 } 00783 flags = fcntl(tmp->alertpipe[1], F_GETFL); 00784 if (fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK) < 0) { 00785 ast_log(LOG_WARNING, "Channel allocation failed: Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 00786 close(tmp->alertpipe[0]); 00787 close(tmp->alertpipe[1]); 00788 goto alertpipe_failed; 00789 } 00790 } 00791 } else /* Make sure we've got it done right if they don't */ 00792 tmp->alertpipe[0] = tmp->alertpipe[1] = -1; 00793 00794 /* Always watch the alertpipe */ 00795 tmp->fds[AST_ALERT_FD] = tmp->alertpipe[0]; 00796 /* And timing pipe */ 00797 tmp->fds[AST_TIMING_FD] = tmp->timingfd; 00798 ast_string_field_set(tmp, name, "**Unknown**"); 00799 00800 /* Initial state */ 00801 tmp->_state = state; 00802 00803 tmp->streamid = -1; 00804 00805 tmp->fin = global_fin; 00806 tmp->fout = global_fout; 00807 00808 if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) { 00809 ast_string_field_build(tmp, uniqueid, "%li.%d", (long) time(NULL), 00810 ast_atomic_fetchadd_int(&uniqueint, 1)); 00811 } else { 00812 ast_string_field_build(tmp, uniqueid, "%s-%li.%d", ast_config_AST_SYSTEM_NAME, 00813 (long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00814 } 00815 00816 tmp->cid.cid_name = ast_strdup(cid_name); 00817 tmp->cid.cid_num = ast_strdup(cid_num); 00818 00819 if (!ast_strlen_zero(name_fmt)) { 00820 /* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call. 00821 * And they all use slightly different formats for their name string. 00822 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here. 00823 * This means, that the stringfields must have a routine that takes the va_lists directly, and 00824 * uses them to build the string, instead of forming the va_lists internally from the vararg ... list. 00825 * This new function was written so this can be accomplished. 00826 */ 00827 va_start(ap1, name_fmt); 00828 va_start(ap2, name_fmt); 00829 ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2); 00830 va_end(ap1); 00831 va_end(ap2); 00832 } 00833 00834 /* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */ 00835 00836 /* These 4 variables need to be set up for the cdr_init() to work right */ 00837 if (amaflag) 00838 tmp->amaflags = amaflag; 00839 else 00840 tmp->amaflags = ast_default_amaflags; 00841 00842 if (!ast_strlen_zero(acctcode)) 00843 ast_string_field_set(tmp, accountcode, acctcode); 00844 else 00845 ast_string_field_set(tmp, accountcode, ast_default_accountcode); 00846 00847 if (!ast_strlen_zero(context)) 00848 ast_copy_string(tmp->context, context, sizeof(tmp->context)); 00849 else 00850 strcpy(tmp->context, "default"); 00851 00852 if (!ast_strlen_zero(exten)) 00853 ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); 00854 else 00855 strcpy(tmp->exten, "s"); 00856 00857 tmp->priority = 1; 00858 00859 tmp->cdr = ast_cdr_alloc(); 00860 ast_cdr_init(tmp->cdr, tmp); 00861 ast_cdr_start(tmp->cdr); 00862 00863 headp = &tmp->varshead; 00864 AST_LIST_HEAD_INIT_NOLOCK(headp); 00865 00866 ast_mutex_init(&tmp->lock); 00867 00868 AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores); 00869 00870 ast_string_field_set(tmp, language, defaultlanguage); 00871 00872 tmp->tech = &null_tech; 00873 00874 AST_LIST_LOCK(&channels); 00875 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00876 AST_LIST_UNLOCK(&channels); 00877 00878 /*\!note 00879 * and now, since the channel structure is built, and has its name, let's 00880 * call the manager event generator with this Newchannel event. This is the 00881 * proper and correct place to make this call, but you sure do have to pass 00882 * a lot of data into this func to do it here! 00883 */ 00884 if (!ast_strlen_zero(name_fmt)) { 00885 manager_event(EVENT_FLAG_CALL, "Newchannel", 00886 "Channel: %s\r\n" 00887 "State: %s\r\n" 00888 "CallerIDNum: %s\r\n" 00889 "CallerIDName: %s\r\n" 00890 "Uniqueid: %s\r\n", 00891 tmp->name, ast_state2str(state), 00892 S_OR(cid_num, "<unknown>"), 00893 S_OR(cid_name, "<unknown>"), 00894 tmp->uniqueid); 00895 } 00896 00897 return tmp; 00898 }
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 3913 of file channel.c.
References ast_channel::_bridge, ast_channel::_softhangup, AST_BRIDGE_COMPLETE, AST_BRIDGE_FAILED, AST_BRIDGE_FAILED_NOWARN, AST_BRIDGE_RETRY, ast_channel_make_compatible(), ast_check_hangup(), ast_check_hangup_locked(), ast_clear_flag, AST_CONTROL_SRCUPDATE, AST_FEATURE_PLAY_WARNING, AST_FEATURE_REDIRECT, AST_FLAG_END_DTMF_ONLY, AST_FLAG_NBRIDGE, AST_FLAG_ZOMBIE, ast_generic_bridge(), ast_indicate(), ast_log(), ast_set_flag, AST_SOFTHANGUP_UNBRIDGE, ast_strlen_zero(), ast_test_flag, ast_tvadd(), ast_tvsub(), ast_verbose(), ast_channel::audiohooks, ast_channel_tech::bridge, bridge_playfile(), ast_channel::cid, ast_callerid::cid_num, config, EVENT_FLAG_CALL, ast_channel::generator, 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_channel::readformat, ast_channel_tech::send_digit_begin, t, ast_channel::tech, VERBOSE_PREFIX_3, and ast_channel::writeformat.
Referenced by ast_bridge_call().
03915 { 03916 struct ast_channel *who = NULL; 03917 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03918 int nativefailed=0; 03919 int firstpass; 03920 int o0nativeformats; 03921 int o1nativeformats; 03922 long time_left_ms=0; 03923 struct timeval nexteventts = { 0, }; 03924 char caller_warning = 0; 03925 char callee_warning = 0; 03926 03927 if (c0->_bridge) { 03928 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 03929 c0->name, c0->_bridge->name); 03930 return -1; 03931 } 03932 if (c1->_bridge) { 03933 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 03934 c1->name, c1->_bridge->name); 03935 return -1; 03936 } 03937 03938 /* Stop if we're a zombie or need a soft hangup */ 03939 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 03940 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 03941 return -1; 03942 03943 *fo = NULL; 03944 firstpass = config->firstpass; 03945 config->firstpass = 0; 03946 03947 if (ast_tvzero(config->start_time)) 03948 config->start_time = ast_tvnow(); 03949 time_left_ms = config->timelimit; 03950 03951 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 03952 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 03953 03954 if (config->start_sound && firstpass) { 03955 if (caller_warning) 03956 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 03957 if (callee_warning) 03958 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 03959 } 03960 03961 /* Keep track of bridge */ 03962 c0->_bridge = c1; 03963 c1->_bridge = c0; 03964 03965 /* \todo XXX here should check that cid_num is not NULL */ 03966 manager_event(EVENT_FLAG_CALL, "Link", 03967 "Channel1: %s\r\n" 03968 "Channel2: %s\r\n" 03969 "Uniqueid1: %s\r\n" 03970 "Uniqueid2: %s\r\n" 03971 "CallerID1: %s\r\n" 03972 "CallerID2: %s\r\n", 03973 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 03974 03975 o0nativeformats = c0->nativeformats; 03976 o1nativeformats = c1->nativeformats; 03977 03978 if (config->feature_timer) { 03979 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 03980 } else if (config->timelimit) { 03981 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 03982 if (caller_warning || callee_warning) 03983 nexteventts = ast_tvsub(nexteventts, ast_samp2tv(config->play_warning, 1000)); 03984 } 03985 03986 if (!c0->tech->send_digit_begin) 03987 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 03988 if (!c1->tech->send_digit_begin) 03989 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 03990 03991 /* Before we enter in and bridge these two together tell them both the source of audio has changed */ 03992 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 03993 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 03994 03995 for (/* ever */;;) { 03996 struct timeval now = { 0, }; 03997 int to; 03998 03999 to = -1; 04000 04001 if (!ast_tvzero(nexteventts)) { 04002 now = ast_tvnow(); 04003 to = ast_tvdiff_ms(nexteventts, now); 04004 if (to <= 0) { 04005 if (!config->timelimit) { 04006 res = AST_BRIDGE_COMPLETE; 04007 break; 04008 } 04009 to = 0; 04010 } 04011 } 04012 04013 if (config->timelimit) { 04014 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04015 if (time_left_ms < to) 04016 to = time_left_ms; 04017 04018 if (time_left_ms <= 0) { 04019 if (caller_warning && config->end_sound) 04020 bridge_playfile(c0, c1, config->end_sound, 0); 04021 if (callee_warning && config->end_sound) 04022 bridge_playfile(c1, c0, config->end_sound, 0); 04023 *fo = NULL; 04024 if (who) 04025 *rc = who; 04026 res = 0; 04027 break; 04028 } 04029 04030 if (!to) { 04031 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning) { 04032 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04033 if (caller_warning) 04034 bridge_playfile(c0, c1, config->warning_sound, t); 04035 if (callee_warning) 04036 bridge_playfile(c1, c0, config->warning_sound, t); 04037 } 04038 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04039 nexteventts = ast_tvadd(nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04040 else 04041 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04042 } 04043 } 04044 04045 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04046 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04047 c0->_softhangup = 0; 04048 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04049 c1->_softhangup = 0; 04050 c0->_bridge = c1; 04051 c1->_bridge = c0; 04052 if (option_debug) 04053 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04054 continue; 04055 } 04056 04057 /* Stop if we're a zombie or need a soft hangup */ 04058 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04059 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04060 *fo = NULL; 04061 if (who) 04062 *rc = who; 04063 res = 0; 04064 if (option_debug) 04065 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", 04066 c0->name, c1->name, 04067 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04068 ast_check_hangup(c0) ? "Yes" : "No", 04069 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04070 ast_check_hangup(c1) ? "Yes" : "No"); 04071 break; 04072 } 04073 04074 /* See if the BRIDGEPEER variable needs to be updated */ 04075 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) 04076 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name); 04077 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) 04078 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name); 04079 04080 if (c0->tech->bridge && 04081 (config->timelimit == 0) && 04082 (c0->tech->bridge == c1->tech->bridge) && 04083 !nativefailed && !c0->monitor && !c1->monitor && 04084 !c0->audiohooks && !c1->audiohooks && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04085 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04086 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04087 /* Looks like they share a bridge method and nothing else is in the way */ 04088 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04089 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04090 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04091 /* \todo XXX here should check that cid_num is not NULL */ 04092 manager_event(EVENT_FLAG_CALL, "Unlink", 04093 "Channel1: %s\r\n" 04094 "Channel2: %s\r\n" 04095 "Uniqueid1: %s\r\n" 04096 "Uniqueid2: %s\r\n" 04097 "CallerID1: %s\r\n" 04098 "CallerID2: %s\r\n", 04099 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04100 if (option_debug) 04101 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04102 04103 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04104 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04105 04106 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04107 continue; 04108 04109 c0->_bridge = NULL; 04110 c1->_bridge = NULL; 04111 04112 return res; 04113 } else { 04114 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04115 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04116 } 04117 switch (res) { 04118 case AST_BRIDGE_RETRY: 04119 continue; 04120 default: 04121 if (option_verbose > 2) 04122 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04123 c0->name, c1->name); 04124 /* fallthrough */ 04125 case AST_BRIDGE_FAILED_NOWARN: 04126 nativefailed++; 04127 break; 04128 } 04129 } 04130 04131 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04132 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04133 !(c0->generator || c1->generator)) { 04134 if (ast_channel_make_compatible(c0, c1)) { 04135 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04136 /* \todo XXX here should check that cid_num is not NULL */ 04137 manager_event(EVENT_FLAG_CALL, "Unlink", 04138 "Channel1: %s\r\n" 04139 "Channel2: %s\r\n" 04140 "Uniqueid1: %s\r\n" 04141 "Uniqueid2: %s\r\n" 04142 "CallerID1: %s\r\n" 04143 "CallerID2: %s\r\n", 04144 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04145 return AST_BRIDGE_FAILED; 04146 } 04147 o0nativeformats = c0->nativeformats; 04148 o1nativeformats = c1->nativeformats; 04149 } 04150 04151 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) 04152 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name); 04153 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) 04154 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name); 04155 04156 res = ast_generic_bridge(c0, c1, config, fo, rc, nexteventts); 04157 if (res != AST_BRIDGE_RETRY) 04158 break; 04159 } 04160 04161 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04162 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04163 04164 /* Now that we have broken the bridge the source will change yet again */ 04165 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04166 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04167 04168 c0->_bridge = NULL; 04169 c1->_bridge = NULL; 04170 04171 /* \todo XXX here should check that cid_num is not NULL */ 04172 manager_event(EVENT_FLAG_CALL, "Unlink", 04173 "Channel1: %s\r\n" 04174 "Channel2: %s\r\n" 04175 "Uniqueid1: %s\r\n" 04176 "Uniqueid2: %s\r\n" 04177 "CallerID1: %s\r\n" 04178 "CallerID2: %s\r\n", 04179 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04180 if (option_debug) 04181 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04182 04183 return res; 04184 }
int ast_channel_cmpwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Compare a offset with the settings of when to hang a channel up.
chan | channel on which to check for hang up | |
offset | offset in seconds from current time |
Definition at line 475 of file channel.c.
References ast_channel::whentohangup.
00476 { 00477 time_t whentohangup; 00478 00479 if (chan->whentohangup == 0) { 00480 return (offset == 0) ? 0 : -1; 00481 } else { 00482 if (offset == 0) /* XXX why is this special ? */ 00483 return (1); 00484 else { 00485 whentohangup = offset + time (NULL); 00486 if (chan->whentohangup < whentohangup) 00487 return (1); 00488 else if (chan->whentohangup == whentohangup) 00489 return (0); 00490 else 00491 return (-1); 00492 } 00493 } 00494 }
int ast_channel_datastore_add | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Add a datastore to a channel.
Definition at line 1355 of file channel.c.
References AST_LIST_INSERT_HEAD.
Referenced by setup_chanspy_ds(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01356 { 01357 int res = 0; 01358 01359 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01360 01361 return res; 01362 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1294 of file channel.c.
References ast_calloc, ast_strdup, and ast_datastore::info.
Referenced by ast_channel_datastore_inherit(), setup_chanspy_ds(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01295 { 01296 struct ast_datastore *datastore = NULL; 01297 01298 /* Make sure we at least have type so we can identify this */ 01299 if (info == NULL) { 01300 return NULL; 01301 } 01302 01303 /* Allocate memory for datastore and clear it */ 01304 datastore = ast_calloc(1, sizeof(*datastore)); 01305 if (datastore == NULL) { 01306 return NULL; 01307 } 01308 01309 datastore->info = info; 01310 01311 datastore->uid = ast_strdup(uid); 01312 01313 return datastore; 01314 }
struct ast_datastore* ast_channel_datastore_find | ( | struct ast_channel * | chan, | |
const struct ast_datastore_info * | info, | |||
char * | uid | |||
) |
Find a datastore on a channel.
Definition at line 1382 of file channel.c.
References AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_datastore::info, and ast_datastore::uid.
Referenced by attended_transfer_occurred(), chanspy_ds_free(), do_atxfer(), do_parking_thread(), find_speech(), queue_transfer_fixup(), smdi_msg_read(), speech_background(), speech_destroy(), and try_calling().
01383 { 01384 struct ast_datastore *datastore = NULL; 01385 01386 if (info == NULL) 01387 return NULL; 01388 01389 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01390 if (datastore->info == info) { 01391 if (uid != NULL && datastore->uid != NULL) { 01392 if (!strcasecmp(uid, datastore->uid)) { 01393 /* Matched by type AND uid */ 01394 break; 01395 } 01396 } else { 01397 /* Matched by type at least */ 01398 break; 01399 } 01400 } 01401 } 01402 AST_LIST_TRAVERSE_SAFE_END 01403 01404 return datastore; 01405 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1316 of file channel.c.
References ast_datastore::data, ast_datastore_info::destroy, free, ast_datastore::info, and ast_datastore::uid.
Referenced by ast_channel_free(), chanspy_ds_free(), queue_transfer_fixup(), and try_calling().
01317 { 01318 int res = 0; 01319 01320 /* Using the destroy function (if present) destroy the data */ 01321 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01322 datastore->info->destroy(datastore->data); 01323 datastore->data = NULL; 01324 } 01325 01326 /* Free allocated UID memory */ 01327 if (datastore->uid != NULL) { 01328 free(datastore->uid); 01329 datastore->uid = NULL; 01330 } 01331 01332 /* Finally free memory used by ourselves */ 01333 free(datastore); 01334 01335 return res; 01336 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1338 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().
01339 { 01340 struct ast_datastore *datastore = NULL, *datastore2; 01341 01342 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01343 if (datastore->inheritance > 0) { 01344 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01345 if (datastore2) { 01346 datastore2->data = datastore->info->duplicate(datastore->data); 01347 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01348 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01349 } 01350 } 01351 } 01352 return 0; 01353 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1364 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, and AST_LIST_TRAVERSE_SAFE_END.
Referenced by chanspy_ds_free(), queue_transfer_fixup(), speech_background(), speech_destroy(), and try_calling().
01365 { 01366 struct ast_datastore *datastore2 = NULL; 01367 int res = -1; 01368 01369 /* Find our position and remove ourselves */ 01370 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01371 if (datastore2 == datastore) { 01372 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01373 res = 0; 01374 break; 01375 } 01376 } 01377 AST_LIST_TRAVERSE_SAFE_END 01378 01379 return res; 01380 }
int ast_channel_defer_dtmf | ( | struct ast_channel * | chan | ) |
Set defer DTMF flag on channel.
Defer DTMF so that you only read things like hangups and audio. Returns non-zero if channel was already DTMF-deferred or 0 if channel is just now being DTMF-deferred
Definition at line 992 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
00993 { 00994 int pre = 0; 00995 00996 if (chan) { 00997 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 00998 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 00999 } 01000 return pre; 01001 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1199 of file channel.c.
References ast_channel::alertpipe, ast_app_group_discard(), ast_cdr_discard(), ast_channel_datastore_free(), ast_channel_lock, AST_CHANNEL_NAME, ast_channel_unlock, ast_device_state_changed_literal(), ast_frfree, ast_jb_destroy(), AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, ast_log(), ast_moh_cleanup(), ast_mutex_destroy(), ast_string_field_free_memory, ast_translator_free_path(), ast_var_delete(), ast_channel::cdr, 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, and ast_channel::writetrans.
Referenced by acf_odbc_read(), acf_odbc_write(), agent_cleanup(), agent_new(), ast_do_masquerade(), ast_hangup(), ast_iax2_new(), ast_pbx_outgoing_cdr_failed(), gtalk_newcall(), local_new(), make_email_file(), pbx_substitute_variables_helper_full(), and sendpage().
01200 { 01201 int fd; 01202 struct ast_var_t *vardata; 01203 struct ast_frame *f; 01204 struct varshead *headp; 01205 struct ast_datastore *datastore = NULL; 01206 char name[AST_CHANNEL_NAME], *dashptr; 01207 01208 headp=&chan->varshead; 01209 01210 AST_LIST_LOCK(&channels); 01211 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01212 AST_LIST_UNLOCK(&channels); 01213 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01214 } 01215 /* Lock and unlock the channel just to be sure nobody has it locked still 01216 due to a reference retrieved from the channel list. */ 01217 ast_channel_lock(chan); 01218 ast_channel_unlock(chan); 01219 01220 /* Get rid of each of the data stores on the channel */ 01221 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01222 /* Free the data store */ 01223 ast_channel_datastore_free(datastore); 01224 01225 /* Lock and unlock the channel just to be sure nobody has it locked still 01226 due to a reference that was stored in a datastore. (i.e. app_chanspy) */ 01227 ast_channel_lock(chan); 01228 ast_channel_unlock(chan); 01229 01230 if (chan->tech_pvt) { 01231 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01232 free(chan->tech_pvt); 01233 } 01234 01235 if (chan->sched) 01236 sched_context_destroy(chan->sched); 01237 01238 ast_copy_string(name, chan->name, sizeof(name)); 01239 if ((dashptr = strrchr(name, '-'))) { 01240 *dashptr = '\0'; 01241 } 01242 01243 /* Stop monitoring */ 01244 if (chan->monitor) 01245 chan->monitor->stop( chan, 0 ); 01246 01247 /* If there is native format music-on-hold state, free it */ 01248 if (chan->music_state) 01249 ast_moh_cleanup(chan); 01250 01251 /* Free translators */ 01252 if (chan->readtrans) 01253 ast_translator_free_path(chan->readtrans); 01254 if (chan->writetrans) 01255 ast_translator_free_path(chan->writetrans); 01256 if (chan->pbx) 01257 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01258 free_cid(&chan->cid); 01259 /* Close pipes if appropriate */ 01260 if ((fd = chan->alertpipe[0]) > -1) 01261 close(fd); 01262 if ((fd = chan->alertpipe[1]) > -1) 01263 close(fd); 01264 if ((fd = chan->timingfd) > -1) 01265 close(fd); 01266 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01267 ast_frfree(f); 01268 01269 /* loop over the variables list, freeing all data and deleting list items */ 01270 /* no need to lock the list, as the channel is already locked */ 01271 01272 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01273 ast_var_delete(vardata); 01274 01275 ast_app_group_discard(chan); 01276 01277 /* Destroy the jitterbuffer */ 01278 ast_jb_destroy(chan); 01279 01280 if (chan->cdr) { 01281 ast_cdr_discard(chan->cdr); 01282 chan->cdr = NULL; 01283 } 01284 01285 ast_mutex_destroy(&chan->lock); 01286 01287 ast_string_field_free_memory(chan); 01288 free(chan); 01289 AST_LIST_UNLOCK(&channels); 01290 01291 ast_device_state_changed_literal(name); 01292 }
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 3313 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().
03314 { 03315 struct ast_var_t *current, *newvar; 03316 const char *varname; 03317 03318 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03319 int vartype = 0; 03320 03321 varname = ast_var_full_name(current); 03322 if (!varname) 03323 continue; 03324 03325 if (varname[0] == '_') { 03326 vartype = 1; 03327 if (varname[1] == '_') 03328 vartype = 2; 03329 } 03330 03331 switch (vartype) { 03332 case 1: 03333 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03334 if (newvar) { 03335 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03336 if (option_debug) 03337 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03338 } 03339 break; 03340 case 2: 03341 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03342 if (newvar) { 03343 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03344 if (option_debug) 03345 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03346 } 03347 break; 03348 default: 03349 if (option_debug) 03350 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03351 break; 03352 } 03353 } 03354 }
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 3166 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(), check_compat(), park_exec(), try_calling(), and wait_for_answer().
03167 { 03168 int src; 03169 int dst; 03170 03171 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03172 /* Already compatible! Moving on ... */ 03173 return 0; 03174 } 03175 03176 /* Set up translation from the chan to the peer */ 03177 src = chan->nativeformats; 03178 dst = peer->nativeformats; 03179 if (ast_translator_best_choice(&dst, &src) < 0) { 03180 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03181 return -1; 03182 } 03183 03184 /* if the best path is not 'pass through', then 03185 transcoding is needed; if desired, force transcode path 03186 to use SLINEAR between channels, but only if there is 03187 no direct conversion available */ 03188 if ((src != dst) && ast_opt_transcode_via_slin && 03189 (ast_translate_path_steps(dst, src) != 1)) 03190 dst = AST_FORMAT_SLINEAR; 03191 if (ast_set_read_format(chan, dst) < 0) { 03192 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03193 return -1; 03194 } 03195 if (ast_set_write_format(peer, dst) < 0) { 03196 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03197 return -1; 03198 } 03199 03200 /* Set up translation from the peer to the chan */ 03201 src = peer->nativeformats; 03202 dst = chan->nativeformats; 03203 if (ast_translator_best_choice(&dst, &src) < 0) { 03204 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03205 return -1; 03206 } 03207 03208 /* if the best path is not 'pass through', then 03209 transcoding is needed; if desired, force transcode path 03210 to use SLINEAR between channels, but only if there is 03211 no direct conversion available */ 03212 if ((src != dst) && ast_opt_transcode_via_slin && 03213 (ast_translate_path_steps(dst, src) != 1)) 03214 dst = AST_FORMAT_SLINEAR; 03215 if (ast_set_read_format(peer, dst) < 0) { 03216 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03217 return -1; 03218 } 03219 if (ast_set_write_format(chan, dst) < 0) { 03220 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03221 return -1; 03222 } 03223 return 0; 03224 }
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 3226 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_park_call(), ast_pickup_call(), attempt_transfer(), check_availability(), check_bridge(), check_goto_on_transfer(), do_atxfer(), handle_invite_replaces(), iax_park(), misdn_transfer_bc(), pickup_do(), and sip_park().
03227 { 03228 int res = -1; 03229 struct ast_channel *final_orig, *final_clone, *base; 03230 03231 retrymasq: 03232 final_orig = original; 03233 final_clone = clone; 03234 03235 ast_channel_lock(original); 03236 while (ast_channel_trylock(clone)) { 03237 ast_channel_unlock(original); 03238 usleep(1); 03239 ast_channel_lock(original); 03240 } 03241 03242 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03243 and if so, we don't really want to masquerade it, but its proxy */ 03244 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03245 final_orig = original->_bridge; 03246 03247 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03248 final_clone = clone->_bridge; 03249 03250 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03251 final_clone = base; 03252 } 03253 03254 if ((final_orig != original) || (final_clone != clone)) { 03255 /* Lots and lots of deadlock avoidance. The main one we're competing with 03256 * is ast_write(), which locks channels recursively, when working with a 03257 * proxy channel. */ 03258 if (ast_channel_trylock(final_orig)) { 03259 ast_channel_unlock(clone); 03260 ast_channel_unlock(original); 03261 goto retrymasq; 03262 } 03263 if (ast_channel_trylock(final_clone)) { 03264 ast_channel_unlock(final_orig); 03265 ast_channel_unlock(clone); 03266 ast_channel_unlock(original); 03267 goto retrymasq; 03268 } 03269 ast_channel_unlock(clone); 03270 ast_channel_unlock(original); 03271 original = final_orig; 03272 clone = final_clone; 03273 } 03274 03275 if (original == clone) { 03276 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03277 ast_channel_unlock(clone); 03278 ast_channel_unlock(original); 03279 return -1; 03280 } 03281 03282 if (option_debug) 03283 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03284 clone->name, original->name); 03285 if (original->masq) { 03286 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03287 original->masq->name, original->name); 03288 } else if (clone->masqr) { 03289 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03290 clone->name, clone->masqr->name); 03291 } else { 03292 original->masq = clone; 03293 clone->masqr = original; 03294 ast_queue_frame(original, &ast_null_frame); 03295 ast_queue_frame(clone, &ast_null_frame); 03296 if (option_debug) 03297 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03298 res = 0; 03299 } 03300 03301 ast_channel_unlock(clone); 03302 ast_channel_unlock(original); 03303 03304 return res; 03305 }
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 2859 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().
02860 { 02861 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 02862 { 02863 case 0: 02864 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 02865 case AST_CONTROL_HANGUP: 02866 return "Hangup"; 02867 case AST_CONTROL_RING: 02868 return "Local Ring"; 02869 case AST_CONTROL_RINGING: 02870 return "Remote end Ringing"; 02871 case AST_CONTROL_ANSWER: 02872 return "Remote end has Answered"; 02873 case AST_CONTROL_BUSY: 02874 return "Remote end is Busy"; 02875 case AST_CONTROL_CONGESTION: 02876 return "Congestion (circuits busy)"; 02877 default: 02878 return "Unknown Reason!!"; 02879 } 02880 }
int ast_channel_register | ( | const struct ast_channel_tech * | tech | ) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports.
tech | Structure defining channel technology or "type" |
Definition at line 497 of file channel.c.
References ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_verbose(), channels, LOG_DEBUG, LOG_WARNING, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by load_module(), and unload_module().
00498 { 00499 struct chanlist *chan; 00500 00501 AST_LIST_LOCK(&channels); 00502 00503 AST_LIST_TRAVERSE(&backends, chan, list) { 00504 if (!strcasecmp(tech->type, chan->tech->type)) { 00505 ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type); 00506 AST_LIST_UNLOCK(&channels); 00507 return -1; 00508 } 00509 } 00510 00511 if (!(chan = ast_calloc(1, sizeof(*chan)))) { 00512 AST_LIST_UNLOCK(&channels); 00513 return -1; 00514 } 00515 chan->tech = tech; 00516 AST_LIST_INSERT_HEAD(&backends, chan, list); 00517 00518 if (option_debug) 00519 ast_log(LOG_DEBUG, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description); 00520 00521 if (option_verbose > 1) 00522 ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type, 00523 chan->tech->description); 00524 00525 AST_LIST_UNLOCK(&channels); 00526 return 0; 00527 }
int ast_channel_sendhtml | ( | struct ast_channel * | channel, | |
int | subclass, | |||
const char * | data, | |||
int | datalen | |||
) |
Send HTML or URL on link. Returns 0 on success or -1 on failure
Definition at line 3154 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().
03155 { 03156 if (chan->tech->send_html) 03157 return chan->tech->send_html(chan, subclass, data, datalen); 03158 return -1; 03159 }
int ast_channel_sendurl | ( | struct ast_channel * | channel, | |
const char * | url | |||
) |
Send URL on link. Returns 0 on success or -1 on failure
Definition at line 3161 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec(), and try_calling().
03162 { 03163 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03164 }
int ast_channel_setoption | ( | struct ast_channel * | channel, | |
int | option, | |||
void * | data, | |||
int | datalen, | |||
int | block | |||
) |
Sets an option on a channel.
channel | channel to set options on | |
option | option to change | |
data | data specific to option | |
datalen | length of the data | |
block | blocking or not Set an option on a channel (see frame.h), optionally blocking awaiting the reply Returns 0 on success and -1 on failure |
Definition at line 4187 of file channel.c.
References ast_log(), errno, LOG_ERROR, ast_channel_tech::setoption, and ast_channel::tech.
Referenced by ast_bridge_call(), common_exec(), conf_run(), dahdi_hangup(), func_channel_write(), handle_tddmode(), play_record_review(), reset_volumes(), rpt(), set_listen_volume(), set_talk_volume(), try_calling(), and vm_forwardoptions().
04188 { 04189 int res; 04190 04191 if (chan->tech->setoption) { 04192 res = chan->tech->setoption(chan, option, data, datalen); 04193 if (res < 0) 04194 return res; 04195 } else { 04196 errno = ENOSYS; 04197 return -1; 04198 } 04199 if (block) { 04200 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04201 intermediate packets. XXX */ 04202 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04203 return -1; 04204 } 04205 return 0; 04206 }
void ast_channel_setwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Set when to hang a channel up.
chan | channel on which to check for hang up | |
offset | offset in seconds from current time of when to hang up This function sets the absolute time out on a channel (when to hang up). |
Definition at line 467 of file channel.c.
References ast_null_frame, ast_queue_frame(), and ast_channel::whentohangup.
Referenced by action_timeout(), and timeout_write().
00468 { 00469 chan->whentohangup = offset ? time(NULL) + offset : 0; 00470 ast_queue_frame(chan, &ast_null_frame); 00471 return; 00472 }
struct ast_silence_generator* ast_channel_start_silence_generator | ( | struct ast_channel * | chan | ) |
Starts a silence generator on the given channel.
chan | The channel to generate silence on |
The pointer returned by this function must be preserved and passed to ast_channel_stop_silence_generator when you wish to stop the silence generation.
Definition at line 4515 of file channel.c.
References ast_activate_generator(), ast_calloc, AST_FORMAT_SLINEAR, ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_silence_generator::old_write_format, option_debug, silence_generator, and ast_channel::writeformat.
Referenced by __ast_play_and_record(), ast_dtmf_stream(), and channel_spy().
04516 { 04517 struct ast_silence_generator *state; 04518 04519 if (!(state = ast_calloc(1, sizeof(*state)))) { 04520 return NULL; 04521 } 04522 04523 state->old_write_format = chan->writeformat; 04524 04525 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 04526 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 04527 free(state); 04528 return NULL; 04529 } 04530 04531 ast_activate_generator(chan, &silence_generator, state); 04532 04533 if (option_debug) 04534 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 04535 04536 return state; 04537 }
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 4539 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_silence_generator::old_write_format, and option_debug.
Referenced by __ast_play_and_record(), ast_dtmf_stream(), and channel_spy().
04540 { 04541 if (!state) 04542 return; 04543 04544 ast_deactivate_generator(chan); 04545 04546 if (option_debug) 04547 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 04548 04549 if (ast_set_write_format(chan, state->old_write_format) < 0) 04550 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 04551 04552 free(state); 04553 }
int ast_channel_supports_html | ( | struct ast_channel * | channel | ) |
Returns 0 if channel does not support HTML or non-zero if it does
Definition at line 3149 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by sendurl_exec(), and try_calling().
void ast_channel_undefer_dtmf | ( | struct ast_channel * | chan | ) |
Unset defer DTMF flag on channel.
Undo defer. ast_read will return any dtmf characters that were queued
Definition at line 1004 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
01005 { 01006 if (chan) 01007 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 01008 }
void ast_channel_unregister | ( | const struct ast_channel_tech * | tech | ) |
Unregister a channel technology.
tech | Structure defining channel technology or "type" that was previously registered |
Definition at line 529 of file channel.c.
References AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, ast_log(), ast_verbose(), 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().
00530 { 00531 struct chanlist *chan; 00532 00533 if (option_debug) 00534 ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type); 00535 00536 AST_LIST_LOCK(&channels); 00537 00538 AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) { 00539 if (chan->tech == tech) { 00540 AST_LIST_REMOVE_CURRENT(&backends, list); 00541 free(chan); 00542 if (option_verbose > 1) 00543 ast_verbose(VERBOSE_PREFIX_2 "Unregistered channel type '%s'\n", tech->type); 00544 break; 00545 } 00546 } 00547 AST_LIST_TRAVERSE_SAFE_END 00548 00549 AST_LIST_UNLOCK(&channels); 00550 }
struct ast_channel* ast_channel_walk_locked | ( | const struct ast_channel * | prev | ) |
Browse channels in use Browse the channels currently in use.
prev | where you want to start in the channel list |
Definition at line 1120 of file channel.c.
References channel_find_locked().
Referenced by action_status(), ast_complete_channels(), ast_pickup_call(), complete_ch_helper(), conf_exec(), handle_chanlist(), handle_chanlist_deprecated(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_nodebugchan_deprecated(), next_channel(), pickup_by_exten(), pickup_by_mark(), and softhangup_exec().
01121 { 01122 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01123 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4439 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04440 { 04441 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04442 }
struct ast_variable* ast_channeltype_list | ( | void | ) |
return an ast_variable list of channeltypes
Definition at line 163 of file channel.c.
References AST_LIST_TRAVERSE, ast_variable_new(), ast_channel_tech::description, chanlist::tech, ast_channel_tech::type, and var.
00164 { 00165 struct chanlist *cl; 00166 struct ast_variable *var=NULL, *prev = NULL; 00167 AST_LIST_TRAVERSE(&backends, cl, list) { 00168 if (prev) { 00169 if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description))) 00170 prev = prev->next; 00171 } else { 00172 var = ast_variable_new(cl->tech->type, cl->tech->description); 00173 prev = var; 00174 } 00175 } 00176 return var; 00177 }
int ast_check_hangup | ( | struct ast_channel * | chan | ) |
Check to see if a channel is needing hang up.
chan | channel on which to check for hang up This function determines if the channel is being requested to be hung up. |
Definition at line 385 of file channel.c.
References ast_channel::_softhangup, AST_SOFTHANGUP_TIMEOUT, ast_channel::tech_pvt, and ast_channel::whentohangup.
Referenced by __ast_read(), action_redirect(), agent_indicate(), app_exec(), ast_answer(), ast_bridge_call(), ast_call(), ast_channel_bridge(), ast_check_hangup_locked(), ast_feature_request_and_dial(), ast_indicate_data(), ast_readstring_full(), ast_recvtext(), ast_rtp_bridge(), ast_sendtext(), ast_transfer(), ast_udptl_bridge(), ast_waitfordigit_full(), ast_write(), bridge_native_loop(), channel_spy(), common_exec(), conf_run(), dahdi_sendtext(), dahdi_setoption(), deadagi_exec(), do_atxfer(), handle_request_invite(), handle_sendimage(), pbx_exec(), rpt(), and wait_for_answer().
00386 { 00387 if (chan->_softhangup) /* yes if soft hangup flag set */ 00388 return 1; 00389 if (!chan->tech_pvt) /* yes if no technology private data */ 00390 return 1; 00391 if (!chan->whentohangup) /* no if no hangup scheduled */ 00392 return 0; 00393 if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */ 00394 return 0; 00395 chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */ 00396 return 1; 00397 }
static int ast_check_hangup_locked | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 399 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_check_hangup().
Referenced by ast_channel_bridge().
00400 { 00401 int res; 00402 ast_channel_lock(chan); 00403 res = ast_check_hangup(chan); 00404 ast_channel_unlock(chan); 00405 return res; 00406 }
void ast_deactivate_generator | ( | struct ast_channel * | chan | ) |
Deactive an active generator
Definition at line 1570 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_clear_flag, AST_FLAG_WRITE_INT, AST_GENERATOR_FD, ast_settimeout(), ast_channel::fds, ast_channel::generator, ast_channel::generatordata, and ast_generator::release.
Referenced by __ast_read(), app_exec(), ast_channel_stop_silence_generator(), ast_openstream_full(), ast_playtones_stop(), ast_quiet_chan(), ast_read_generator_actions(), ast_tonepair_stop(), ast_write(), cb_events(), channel_spy(), generator_force(), local_ast_moh_stop(), old_milliwatt_exec(), and wait_for_answer().
01571 { 01572 ast_channel_lock(chan); 01573 if (chan->generatordata) { 01574 if (chan->generator && chan->generator->release) 01575 chan->generator->release(chan, chan->generatordata); 01576 chan->generatordata = NULL; 01577 chan->generator = NULL; 01578 chan->fds[AST_GENERATOR_FD] = -1; 01579 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01580 ast_settimeout(chan, 0, NULL, NULL); 01581 } 01582 ast_channel_unlock(chan); 01583 }
int ast_do_masquerade | ( | struct ast_channel * | original | ) |
Start masquerading a channel XXX This is a seriously wacked out operation. We're essentially putting the guts of the clone channel into the original channel. Start by killing off the original channel's backend. I'm not sure we're going to keep this function, because while the features are nice, the cost is very high in terms of pure nastiness. XXX.
Definition at line 3387 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::adsicpe, ast_channel::alertpipe, ast_app_group_update(), ast_cause2str(), ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_copy_flags, AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, AST_FLAG_ZOMBIE, AST_GENERATOR_FD, ast_indicate(), AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_HEAD_NOLOCK, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_INSERT_TAIL, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_log(), AST_MAX_FDS, ast_null_frame, ast_queue_frame(), ast_set_flag, ast_set_read_format(), ast_set_write_format(), AST_SOFTHANGUP_DEV, ast_string_field_set, ast_test_flag, AST_TIMING_FD, ast_channel::blocker, ast_channel::cdr, ast_datastore_info::chan_fixup, ast_channel::cid, clone_variables(), ast_datastore::data, EVENT_FLAG_CALL, ast_channel::fdno, ast_channel::fds, ast_channel_tech::fixup, free_translation(), ast_channel_tech::hangup, ast_datastore::info, language, ast_channel::lock, LOG_DEBUG, 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, t, ast_channel::tech, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel_tech::type, ast_channel::visible_indication, and ast_channel::writeformat.
Referenced by __ast_read(), ast_async_goto(), ast_hangup(), ast_waitfor_nandfds(), ast_write(), iax_park(), sip_park(), and sip_park_thread().
03388 { 03389 int x,i; 03390 int res=0; 03391 int origstate; 03392 struct ast_frame *cur; 03393 const struct ast_channel_tech *t; 03394 void *t_pvt; 03395 struct ast_callerid tmpcid; 03396 struct ast_channel *clone = original->masq; 03397 struct ast_cdr *cdr; 03398 int rformat = original->readformat; 03399 int wformat = original->writeformat; 03400 char newn[100]; 03401 char orig[100]; 03402 char masqn[100]; 03403 char zombn[100]; 03404 03405 if (option_debug > 3) 03406 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03407 clone->name, clone->_state, original->name, original->_state); 03408 03409 /* XXX This is a seriously wacked out operation. We're essentially putting the guts of 03410 the clone channel into the original channel. Start by killing off the original 03411 channel's backend. I'm not sure we're going to keep this function, because 03412 while the features are nice, the cost is very high in terms of pure nastiness. XXX */ 03413 03414 /* We need the clone's lock, too */ 03415 ast_channel_lock(clone); 03416 03417 if (option_debug > 1) 03418 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03419 03420 /* Having remembered the original read/write formats, we turn off any translation on either 03421 one */ 03422 free_translation(clone); 03423 free_translation(original); 03424 03425 03426 /* Unlink the masquerade */ 03427 original->masq = NULL; 03428 clone->masqr = NULL; 03429 03430 /* Save the original name */ 03431 ast_copy_string(orig, original->name, sizeof(orig)); 03432 /* Save the new name */ 03433 ast_copy_string(newn, clone->name, sizeof(newn)); 03434 /* Create the masq name */ 03435 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03436 03437 /* Copy the name from the clone channel */ 03438 ast_string_field_set(original, name, newn); 03439 03440 /* Mangle the name of the clone channel */ 03441 ast_string_field_set(clone, name, masqn); 03442 03443 /* Notify any managers of the change, first the masq then the other */ 03444 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 03445 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03446 03447 /* Swap the technologies */ 03448 t = original->tech; 03449 original->tech = clone->tech; 03450 clone->tech = t; 03451 03452 /* Swap the cdrs */ 03453 cdr = original->cdr; 03454 original->cdr = clone->cdr; 03455 clone->cdr = cdr; 03456 03457 t_pvt = original->tech_pvt; 03458 original->tech_pvt = clone->tech_pvt; 03459 clone->tech_pvt = t_pvt; 03460 03461 /* Swap the alertpipes */ 03462 for (i = 0; i < 2; i++) { 03463 x = original->alertpipe[i]; 03464 original->alertpipe[i] = clone->alertpipe[i]; 03465 clone->alertpipe[i] = x; 03466 } 03467 03468 /* 03469 * Swap the readq's. The end result should be this: 03470 * 03471 * 1) All frames should be on the new (original) channel. 03472 * 2) Any frames that were already on the new channel before this 03473 * masquerade need to be at the end of the readq, after all of the 03474 * frames on the old (clone) channel. 03475 * 3) The alertpipe needs to get poked for every frame that was already 03476 * on the new channel, since we are now using the alert pipe from the 03477 * old (clone) channel. 03478 */ 03479 { 03480 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 03481 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 03482 03483 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 03484 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 03485 03486 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 03487 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 03488 if (original->alertpipe[1] > -1) { 03489 int poke = 0; 03490 write(original->alertpipe[1], &poke, sizeof(poke)); 03491 } 03492 } 03493 } 03494 03495 /* Swap the raw formats */ 03496 x = original->rawreadformat; 03497 original->rawreadformat = clone->rawreadformat; 03498 clone->rawreadformat = x; 03499 x = original->rawwriteformat; 03500 original->rawwriteformat = clone->rawwriteformat; 03501 clone->rawwriteformat = x; 03502 03503 clone->_softhangup = AST_SOFTHANGUP_DEV; 03504 03505 /* And of course, so does our current state. Note we need not 03506 call ast_setstate since the event manager doesn't really consider 03507 these separate. We do this early so that the clone has the proper 03508 state of the original channel. */ 03509 origstate = original->_state; 03510 original->_state = clone->_state; 03511 clone->_state = origstate; 03512 03513 if (clone->tech->fixup){ 03514 res = clone->tech->fixup(original, clone); 03515 if (res) 03516 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03517 } 03518 03519 /* Start by disconnecting the original's physical side */ 03520 if (clone->tech->hangup) 03521 res = clone->tech->hangup(clone); 03522 if (res) { 03523 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03524 ast_channel_unlock(clone); 03525 return -1; 03526 } 03527 03528 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03529 /* Mangle the name of the clone channel */ 03530 ast_string_field_set(clone, name, zombn); 03531 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03532 03533 /* Update the type. */ 03534 t_pvt = original->monitor; 03535 original->monitor = clone->monitor; 03536 clone->monitor = t_pvt; 03537 03538 /* Keep the same language. */ 03539 ast_string_field_set(original, language, clone->language); 03540 /* Copy the FD's other than the generator fd */ 03541 for (x = 0; x < AST_MAX_FDS; x++) { 03542 if (x != AST_GENERATOR_FD) 03543 original->fds[x] = clone->fds[x]; 03544 } 03545 03546 ast_app_group_update(clone, original); 03547 /* Move data stores over */ 03548 if (AST_LIST_FIRST(&clone->datastores)) { 03549 struct ast_datastore *ds; 03550 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 03551 AST_LIST_TRAVERSE(&original->datastores, ds, entry) { 03552 if (ds->info->chan_fixup) 03553 ds->info->chan_fixup(ds->data, clone, original); 03554 } 03555 } 03556 03557 clone_variables(original, clone); 03558 /* Presense of ADSI capable CPE follows clone */ 03559 original->adsicpe = clone->adsicpe; 03560 /* Bridge remains the same */ 03561 /* CDR fields remain the same */ 03562 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 03563 /* Application and data remain the same */ 03564 /* Clone exception becomes real one, as with fdno */ 03565 ast_copy_flags(original, clone, AST_FLAG_EXCEPTION); 03566 original->fdno = clone->fdno; 03567 /* Schedule context remains the same */ 03568 /* Stream stuff stays the same */ 03569 /* Keep the original state. The fixup code will need to work with it most likely */ 03570 03571 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 03572 out. */ 03573 tmpcid = original->cid; 03574 original->cid = clone->cid; 03575 clone->cid = tmpcid; 03576 03577 /* Restore original timing file descriptor */ 03578 original->fds[AST_TIMING_FD] = original->timingfd; 03579 03580 /* Our native formats are different now */ 03581 original->nativeformats = clone->nativeformats; 03582 03583 /* Context, extension, priority, app data, jump table, remain the same */ 03584 /* pvt switches. pbx stays the same, as does next */ 03585 03586 /* Set the write format */ 03587 ast_set_write_format(original, wformat); 03588 03589 /* Set the read format */ 03590 ast_set_read_format(original, rformat); 03591 03592 /* Copy the music class */ 03593 ast_string_field_set(original, musicclass, clone->musicclass); 03594 03595 if (option_debug) 03596 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 03597 03598 /* Okay. Last thing is to let the channel driver know about all this mess, so he 03599 can fix up everything as best as possible */ 03600 if (original->tech->fixup) { 03601 res = original->tech->fixup(clone, original); 03602 if (res) { 03603 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 03604 original->tech->type, original->name); 03605 ast_channel_unlock(clone); 03606 return -1; 03607 } 03608 } else 03609 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 03610 original->tech->type, original->name); 03611 03612 /* If an indication is currently playing maintain it on the channel that is taking the place of original */ 03613 if (original->visible_indication) 03614 ast_indicate(original, original->visible_indication); 03615 03616 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 03617 a zombie so nothing tries to touch it. If it's already been marked as a 03618 zombie, then free it now (since it already is considered invalid). */ 03619 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 03620 if (option_debug) 03621 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 03622 ast_channel_unlock(clone); 03623 manager_event(EVENT_FLAG_CALL, "Hangup", 03624 "Channel: %s\r\n" 03625 "Uniqueid: %s\r\n" 03626 "Cause: %d\r\n" 03627 "Cause-txt: %s\r\n", 03628 clone->name, 03629 clone->uniqueid, 03630 clone->hangupcause, 03631 ast_cause2str(clone->hangupcause) 03632 ); 03633 ast_channel_free(clone); 03634 } else { 03635 if (option_debug) 03636 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 03637 ast_set_flag(clone, AST_FLAG_ZOMBIE); 03638 ast_queue_frame(clone, &ast_null_frame); 03639 ast_channel_unlock(clone); 03640 } 03641 03642 /* Signal any blocker */ 03643 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 03644 pthread_kill(original->blocker, SIGURG); 03645 if (option_debug) 03646 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 03647 return 0; 03648 }
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 3761 of file channel.c.
References AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_RETRY, ast_jb_do_usecheck(), ast_jb_empty_and_reset(), config, f, ast_channel::nativeformats, and ast_channel::tech_pvt.
Referenced by ast_channel_bridge().
03764 { 03765 /* Copy voice back and forth between the two channels. */ 03766 struct ast_channel *cs[3]; 03767 struct ast_frame *f; 03768 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03769 int o0nativeformats; 03770 int o1nativeformats; 03771 int watch_c0_dtmf; 03772 int watch_c1_dtmf; 03773 void *pvt0, *pvt1; 03774 /* Indicates whether a frame was queued into a jitterbuffer */ 03775 int frame_put_in_jb = 0; 03776 int jb_in_use; 03777 int to; 03778 03779 cs[0] = c0; 03780 cs[1] = c1; 03781 pvt0 = c0->tech_pvt; 03782 pvt1 = c1->tech_pvt; 03783 o0nativeformats = c0->nativeformats; 03784 o1nativeformats = c1->nativeformats; 03785 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 03786 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 03787 03788 /* Check the need of a jitterbuffer for each channel */ 03789 jb_in_use = ast_jb_do_usecheck(c0, c1); 03790 if (jb_in_use) 03791 ast_jb_empty_and_reset(c0, c1); 03792 03793 for (;;) { 03794 struct ast_channel *who, *other; 03795 03796 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 03797 (o0nativeformats != c0->nativeformats) || 03798 (o1nativeformats != c1->nativeformats)) { 03799 /* Check for Masquerade, codec changes, etc */ 03800 res = AST_BRIDGE_RETRY; 03801 break; 03802 } 03803 if (bridge_end.tv_sec) { 03804 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 03805 if (to <= 0) { 03806 if (config->timelimit) 03807 res = AST_BRIDGE_RETRY; 03808 else 03809 res = AST_BRIDGE_COMPLETE; 03810 break; 03811 } 03812 } else 03813 to = -1; 03814 /* Calculate the appropriate max sleep interval - in general, this is the time, 03815 left to the closest jb delivery moment */ 03816 if (jb_in_use) 03817 to = ast_jb_get_when_to_wakeup(c0, c1, to); 03818 who = ast_waitfor_n(cs, 2, &to); 03819 if (!who) { 03820 /* No frame received within the specified timeout - check if we have to deliver now */ 03821 if (jb_in_use) 03822 ast_jb_get_and_deliver(c0, c1); 03823 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 03824 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03825 c0->_softhangup = 0; 03826 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03827 c1->_softhangup = 0; 03828 c0->_bridge = c1; 03829 c1->_bridge = c0; 03830 } 03831 continue; 03832 } 03833 f = ast_read(who); 03834 if (!f) { 03835 *fo = NULL; 03836 *rc = who; 03837 if (option_debug) 03838 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 03839 break; 03840 } 03841 03842 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 03843 /* Try add the frame info the who's bridged channel jitterbuff */ 03844 if (jb_in_use) 03845 frame_put_in_jb = !ast_jb_put(other, f); 03846 03847 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 03848 int bridge_exit = 0; 03849 03850 switch (f->subclass) { 03851 case AST_CONTROL_HOLD: 03852 case AST_CONTROL_UNHOLD: 03853 case AST_CONTROL_VIDUPDATE: 03854 case AST_CONTROL_SRCUPDATE: 03855 ast_indicate_data(other, f->subclass, f->data, f->datalen); 03856 if (jb_in_use) { 03857 ast_jb_empty_and_reset(c0, c1); 03858 } 03859 break; 03860 default: 03861 *fo = f; 03862 *rc = who; 03863 bridge_exit = 1; 03864 if (option_debug) 03865 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 03866 break; 03867 } 03868 if (bridge_exit) 03869 break; 03870 } 03871 if ((f->frametype == AST_FRAME_VOICE) || 03872 (f->frametype == AST_FRAME_DTMF_BEGIN) || 03873 (f->frametype == AST_FRAME_DTMF) || 03874 (f->frametype == AST_FRAME_VIDEO) || 03875 (f->frametype == AST_FRAME_IMAGE) || 03876 (f->frametype == AST_FRAME_HTML) || 03877 (f->frametype == AST_FRAME_MODEM) || 03878 (f->frametype == AST_FRAME_TEXT)) { 03879 /* monitored dtmf causes exit from bridge */ 03880 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 03881 03882 if (monitored_source && 03883 (f->frametype == AST_FRAME_DTMF_END || 03884 f->frametype == AST_FRAME_DTMF_BEGIN)) { 03885 *fo = f; 03886 *rc = who; 03887 if (option_debug) 03888 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 03889 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 03890 who->name); 03891 break; 03892 } 03893 /* Write immediately frames, not passed through jb */ 03894 if (!frame_put_in_jb) 03895 ast_write(other, f); 03896 03897 /* Check if we have to deliver now */ 03898 if (jb_in_use) 03899 ast_jb_get_and_deliver(c0, c1); 03900 } 03901 /* XXX do we want to pass on also frames not matched above ? */ 03902 ast_frfree(f); 03903 03904 /* Swap who gets priority */ 03905 cs[2] = cs[0]; 03906 cs[0] = cs[1]; 03907 cs[1] = cs[2]; 03908 } 03909 return res; 03910 }
struct ast_channel* ast_get_channel_by_exten_locked | ( | const char * | exten, | |
const char * | context | |||
) |
Get channel by exten (and optionally context) and lock it.
Definition at line 1145 of file channel.c.
References channel_find_locked().
01146 { 01147 return channel_find_locked(NULL, NULL, 0, context, exten); 01148 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1126 of file channel.c.
References channel_find_locked().
Referenced by action_atxfer(), action_getvar(), action_hangup(), action_redirect(), action_setcdruserfield(), action_setvar(), action_status(), action_timeout(), ast_async_goto_by_name(), asyncgoto_exec(), change_monitor_action(), do_pause_or_unpause(), get_zap_channel_locked(), handle_channelstatus(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_getvariablefull(), handle_hangup(), handle_nodebugchan_deprecated(), handle_showchan(), handle_showchan_deprecated(), handle_softhangup(), manager_park(), manager_play_dtmf(), park_call_full(), pbx_builtin_importvar(), start_monitor_action(), and stop_monitor_action().
01127 { 01128 return channel_find_locked(NULL, name, 0, NULL, NULL); 01129 }
struct ast_channel* ast_get_channel_by_name_prefix_locked | ( | const char * | name, | |
const int | namelen | |||
) |
Get channel by name prefix (locks channel).
Definition at line 1132 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01133 { 01134 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01135 }
struct ast_channel_tech* ast_get_channel_tech | ( | const char * | name | ) |
Get a channel technology structure by name.
name | name of technology to find |
Definition at line 552 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), channels, LOG_WARNING, chanlist::tech, and ast_channel_tech::type.
Referenced by ast_device_state().
00553 { 00554 struct chanlist *chanls; 00555 const struct ast_channel_tech *ret = NULL; 00556 00557 if (AST_LIST_LOCK(&channels)) { 00558 ast_log(LOG_WARNING, "Unable to lock channel tech list\n"); 00559 return NULL; 00560 } 00561 00562 AST_LIST_TRAVERSE(&backends, chanls, list) { 00563 if (!strcasecmp(name, chanls->tech->type)) { 00564 ret = chanls->tech; 00565 break; 00566 } 00567 } 00568 00569 AST_LIST_UNLOCK(&channels); 00570 00571 return ret; 00572 }
ast_group_t ast_get_group | ( | const char * | s | ) |
Definition at line 4360 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(), process_dahdi(), and read_agent_config().
04361 { 04362 char *piece; 04363 char *c; 04364 int start=0, finish=0, x; 04365 ast_group_t group = 0; 04366 04367 if (ast_strlen_zero(s)) 04368 return 0; 04369 04370 c = ast_strdupa(s); 04371 04372 while ((piece = strsep(&c, ","))) { 04373 if (sscanf(piece, "%d-%d", &start, &finish) == 2) { 04374 /* Range */ 04375 } else if (sscanf(piece, "%d", &start)) { 04376 /* Just one */ 04377 finish = start; 04378 } else { 04379 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04380 continue; 04381 } 04382 for (x = start; x <= finish; x++) { 04383 if ((x > 63) || (x < 0)) { 04384 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04385 } else 04386 group |= ((ast_group_t) 1 << x); 04387 } 04388 } 04389 return group; 04390 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1444 of file channel.c.
References ast_assert, ast_audiohook_detach_list(), ast_autoservice_stop(), ast_cause2str(), ast_cdr_detach(), ast_cdr_end(), AST_CDR_FLAG_BRIDGED, AST_CDR_FLAG_DIALED, AST_CDR_FLAG_POST_DISABLED, AST_CDR_NULL, ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_closestream(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_ZOMBIE, ast_log(), ast_set_flag, ast_test_flag, ast_channel::audiohooks, ast_channel::blocker, ast_channel::blockproc, ast_channel::cdr, ast_cdr::disposition, 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_request_and_dial(), __oh323_new(), agent_hangup(), agent_read(), alsa_new(), answer_exec_run(), app_exec(), ast_async_goto(), ast_bridge_call_thread(), ast_dial_destroy(), ast_dial_hangup(), ast_feature_request_and_dial(), ast_iax2_new(), ast_masq_park_call(), ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_pbx_run_app(), async_wait(), begin_dial(), build_conf(), chanavail_exec(), check_compat(), check_goto_on_transfer(), clear_caller(), conf_free(), conf_run(), connect_link(), dahdi_handle_event(), dahdi_new(), do_atxfer(), do_hang(), do_parking_thread(), features_hangup(), findmeexec(), gtalk_new(), handle_enbloc_call_message(), handle_frame(), handle_frame_ownerless(), handle_hd_hf(), handle_init_event(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_soft_key_event_message(), handle_stimulus_message(), hangup_chan(), hangupcalls(), hanguptree(), iax2_request(), iax_park(), iax_park_thread(), local_attended_transfer(), local_hangup(), mgcp_new(), mgcp_ss(), monitor_dial(), nbs_new(), oss_new(), park_exec(), parkandannounce_exec(), phone_new(), rpt(), rpt_call(), rpt_tele_thread(), sip_new(), sip_park(), sip_park_thread(), skinny_new(), skinny_ss(), ss_thread(), try_calling(), wait_for_answer(), and wait_for_winner().
01445 { 01446 int res = 0; 01447 01448 /* Don't actually hang up a channel that will masquerade as someone else, or 01449 if someone is going to masquerade as us */ 01450 ast_channel_lock(chan); 01451 01452 if (chan->audiohooks) { 01453 ast_audiohook_detach_list(chan->audiohooks); 01454 chan->audiohooks = NULL; 01455 } 01456 01457 ast_autoservice_stop(chan); 01458 01459 if (chan->masq) { 01460 if (ast_do_masquerade(chan)) 01461 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01462 } 01463 01464 if (chan->masq) { 01465 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01466 ast_channel_unlock(chan); 01467 return 0; 01468 } 01469 /* If this channel is one which will be masqueraded into something, 01470 mark it as a zombie already, so we know to free it later */ 01471 if (chan->masqr) { 01472 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01473 ast_channel_unlock(chan); 01474 return 0; 01475 } 01476 free_translation(chan); 01477 /* Close audio stream */ 01478 if (chan->stream) { 01479 ast_closestream(chan->stream); 01480 chan->stream = NULL; 01481 } 01482 /* Close video stream */ 01483 if (chan->vstream) { 01484 ast_closestream(chan->vstream); 01485 chan->vstream = NULL; 01486 } 01487 if (chan->sched) { 01488 sched_context_destroy(chan->sched); 01489 chan->sched = NULL; 01490 } 01491 01492 if (chan->generatordata) /* Clear any tone stuff remaining */ 01493 chan->generator->release(chan, chan->generatordata); 01494 chan->generatordata = NULL; 01495 chan->generator = NULL; 01496 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01497 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01498 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01499 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01500 ast_assert(ast_test_flag(chan, AST_FLAG_BLOCKING) == 0); 01501 } 01502 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01503 if (option_debug) 01504 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01505 if (chan->tech->hangup) 01506 res = chan->tech->hangup(chan); 01507 } else { 01508 if (option_debug) 01509 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01510 } 01511 01512 ast_channel_unlock(chan); 01513 manager_event(EVENT_FLAG_CALL, "Hangup", 01514 "Channel: %s\r\n" 01515 "Uniqueid: %s\r\n" 01516 "Cause: %d\r\n" 01517 "Cause-txt: %s\r\n", 01518 chan->name, 01519 chan->uniqueid, 01520 chan->hangupcause, 01521 ast_cause2str(chan->hangupcause) 01522 ); 01523 01524 if (chan->cdr && !ast_test_flag(chan->cdr, AST_CDR_FLAG_BRIDGED) && 01525 !ast_test_flag(chan->cdr, AST_CDR_FLAG_POST_DISABLED) && 01526 (chan->cdr->disposition != AST_CDR_NULL || ast_test_flag(chan->cdr, AST_CDR_FLAG_DIALED))) { 01527 01528 ast_cdr_end(chan->cdr); 01529 ast_cdr_detach(chan->cdr); 01530 chan->cdr = NULL; 01531 } 01532 01533 ast_channel_free(chan); 01534 01535 return res; 01536 }
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 2388 of file channel.c.
References ast_indicate_data().
Referenced by __ast_play_and_record(), agent_new(), ast_bridge_call(), ast_channel_bridge(), ast_do_masquerade(), ast_dtmf_stream(), ast_feature_request_and_dial(), attempt_transfer(), builtin_blindtransfer(), conf_run(), disa_exec(), do_atxfer(), do_parking_thread(), features_indicate(), finishup(), function_remote(), handle_frame(), handle_recordfile(), mgcp_ss(), monitor_dial(), park_exec(), pbx_builtin_busy(), pbx_builtin_congestion(), pbx_builtin_progress(), pbx_builtin_ringing(), pbx_builtin_waitexten(), queue_exec(), rpt(), send_waveform_to_channel(), skinny_ss(), sla_handle_hold_event(), sla_station_exec(), sla_trunk_exec(), and wait_for_answer().
02389 { 02390 return ast_indicate_data(chan, condition, NULL, 0); 02391 }
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 2393 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FLAG_ZOMBIE, ast_get_indication_tone(), ast_log(), ast_playtones_start(), ast_playtones_stop(), ast_test_flag, ind_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_indicate(), bridge_native_loop(), do_parking_thread(), park_call_full(), pbx_builtin_waitexten(), and wait_for_answer().
02394 { 02395 int res = -1; 02396 02397 ast_channel_lock(chan); 02398 /* Stop if we're a zombie or need a soft hangup */ 02399 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02400 ast_channel_unlock(chan); 02401 return -1; 02402 } 02403 if (chan->tech->indicate) 02404 res = chan->tech->indicate(chan, condition, data, datalen); 02405 ast_channel_unlock(chan); 02406 if (!chan->tech->indicate || res) { 02407 /* 02408 * Device does not support (that) indication, lets fake 02409 * it by doing our own tone generation. (PM2002) 02410 */ 02411 if (condition < 0) 02412 ast_playtones_stop(chan); 02413 else { 02414 const struct ind_tone_zone_sound *ts = NULL; 02415 switch (condition) { 02416 case AST_CONTROL_RINGING: 02417 ts = ast_get_indication_tone(chan->zone, "ring"); 02418 break; 02419 case AST_CONTROL_BUSY: 02420 ts = ast_get_indication_tone(chan->zone, "busy"); 02421 break; 02422 case AST_CONTROL_CONGESTION: 02423 ts = ast_get_indication_tone(chan->zone, "congestion"); 02424 break; 02425 } 02426 if (ts && ts->data[0]) { 02427 if (option_debug) 02428 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02429 ast_playtones_start(chan,0,ts->data, 1); 02430 res = 0; 02431 chan->visible_indication = condition; 02432 } else if (condition == AST_CONTROL_PROGRESS) { 02433 /* ast_playtones_stop(chan); */ 02434 } else if (condition == AST_CONTROL_PROCEEDING) { 02435 /* Do nothing, really */ 02436 } else if (condition == AST_CONTROL_HOLD) { 02437 /* Do nothing.... */ 02438 } else if (condition == AST_CONTROL_UNHOLD) { 02439 /* Do nothing.... */ 02440 } else if (condition == AST_CONTROL_VIDUPDATE) { 02441 /* Do nothing.... */ 02442 } else if (condition == AST_CONTROL_SRCUPDATE) { 02443 /* Do nothing... */ 02444 } else { 02445 /* not handled */ 02446 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02447 res = -1; 02448 } 02449 } 02450 } else 02451 chan->visible_indication = condition; 02452 02453 return res; 02454 }
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 4396 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04399 { 04400 ast_moh_start_ptr = start_ptr; 04401 ast_moh_stop_ptr = stop_ptr; 04402 ast_moh_cleanup_ptr = cleanup_ptr; 04403 }
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 2370 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().
02371 { 02372 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02373 if (option_debug > 4) 02374 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); 02375 return ret; 02376 }
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 4433 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04434 { 04435 if (ast_moh_cleanup_ptr) 04436 ast_moh_cleanup_ptr(chan); 04437 }
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 4413 of file channel.c.
References ast_moh_start_ptr, ast_verbose(), option_verbose, and VERBOSE_PREFIX_3.
Referenced by alsa_indicate(), app_exec(), cb_events(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), moh0_exec(), moh1_exec(), moh3_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), and skinny_indicate().
04414 { 04415 if (ast_moh_start_ptr) 04416 return ast_moh_start_ptr(chan, mclass, interpclass); 04417 04418 if (option_verbose > 2) { 04419 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04420 mclass ? mclass : (interpclass ? interpclass : "default")); 04421 } 04422 04423 return 0; 04424 }
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 4427 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), ast_quiet_chan(), cb_events(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), misdn_transfer_bc(), moh0_exec(), moh1_exec(), moh4_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), skinny_indicate(), and try_calling().
04428 { 04429 if (ast_moh_stop_ptr) 04430 ast_moh_stop_ptr(chan); 04431 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 4445 of file channel.c.
Referenced by _sip_show_peer(), func_channel_read(), misdn_cfg_get_config_string(), print_group(), read_config(), and serialize_showchan().
04446 { 04447 unsigned int i; 04448 int first=1; 04449 char num[3]; 04450 04451 buf[0] = '\0'; 04452 04453 if (!group) /* Return empty string if no group */ 04454 return buf; 04455 04456 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04457 if (group & ((ast_group_t) 1 << i)) { 04458 if (!first) { 04459 strncat(buf, ", ", buflen - strlen(buf) - 1); 04460 } else { 04461 first=0; 04462 } 04463 snprintf(num, sizeof(num), "%u", i); 04464 strncat(buf, num, buflen - strlen(buf) - 1); 04465 } 04466 } 04467 return buf; 04468 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2576 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().
02577 { 02578 struct ast_frame a = { AST_FRAME_VOICE }; 02579 char nothing[128]; 02580 02581 /* Send an empty audio frame to get things moving */ 02582 if (chan->_state != AST_STATE_UP) { 02583 if (option_debug) 02584 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02585 a.subclass = chan->rawwriteformat; 02586 a.data = nothing + AST_FRIENDLY_OFFSET; 02587 a.src = "ast_prod"; 02588 if (ast_write(chan, &a)) 02589 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02590 } 02591 return 0; 02592 }
int ast_queue_control | ( | struct ast_channel * | chan, | |
enum ast_control_frame_type | control | |||
) |
Queue a control frame with payload.
chan | channel to queue frame onto | |
control | type of control frame |
Definition at line 969 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by __dahdi_exception(), __oh323_update_info(), ast_pickup_call(), attempt_transfer(), auto_congest(), cb_events(), dahdi_handle_event(), dahdi_hangup(), gtalk_is_answered(), gtalk_ringing_ack(), handle_hd_hf(), handle_offhook_message(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_refer(), handle_response(), handle_response_invite(), handle_response_refer(), handle_soft_key_event_message(), handle_stimulus_message(), mgcp_call(), nbs_call(), phone_call(), pickup_do(), process_sdp(), receive_digit(), send_cause2ast(), setup_rtp_connection(), skinny_call(), skinny_unhold(), ss_thread(), and update_state().
00970 { 00971 struct ast_frame f = { AST_FRAME_CONTROL, }; 00972 00973 f.subclass = control; 00974 00975 return ast_queue_frame(chan, &f); 00976 }
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 979 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by action_atxfer(), dahdi_handle_event(), dahdi_hangup(), iax2_queue_control_data(), process_sdp(), and skinny_hold().
00981 { 00982 struct ast_frame f = { AST_FRAME_CONTROL, }; 00983 00984 f.subclass = control; 00985 f.data = (void *) data; 00986 f.datalen = datalen; 00987 00988 return ast_queue_frame(chan, &f); 00989 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin | |||
) |
Queue an outgoing frame.
Definition at line 901 of file channel.c.
References ast_channel::alertpipe, ast_assert, ast_channel_lock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FLAG_BLOCKING, AST_FRAME_CONTROL, AST_FRAME_VOICE, ast_frdup(), ast_frfree, AST_LIST_INSERT_TAIL, AST_LIST_LAST, AST_LIST_TRAVERSE, ast_log(), ast_test_flag, ast_channel::blocker, 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(), dahdi_queue_frame(), dictate_exec(), do_immediate_setup(), gtalk_handle_dtmf(), handle_keypad_button_message(), handle_request_info(), handle_request_invite(), handle_response_invite(), iax2_queue_frame(), local_queue_frame(), mgcp_queue_frame(), oh323_simulate_dtmf_end(), oss_call(), process_sdp(), receive_digit(), receive_message(), rpt_call(), and wakeup_sub().
00902 { 00903 struct ast_frame *f; 00904 struct ast_frame *cur; 00905 int blah = 1; 00906 int qlen = 0; 00907 00908 /* Build us a copy and free the original one */ 00909 if (!(f = ast_frdup(fin))) { 00910 ast_log(LOG_WARNING, "Unable to duplicate frame\n"); 00911 return -1; 00912 } 00913 ast_channel_lock(chan); 00914 00915 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00916 if ((cur = AST_LIST_LAST(&chan->readq)) && (cur->frametype == AST_FRAME_CONTROL) && (cur->subclass == AST_CONTROL_HANGUP)) { 00917 ast_frfree(f); 00918 ast_channel_unlock(chan); 00919 return 0; 00920 } 00921 00922 /* Count how many frames exist on the queue */ 00923 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00924 qlen++; 00925 } 00926 00927 /* Allow up to 96 voice frames outstanding, and up to 128 total frames */ 00928 if (((fin->frametype == AST_FRAME_VOICE) && (qlen > 96)) || (qlen > 128)) { 00929 if (fin->frametype != AST_FRAME_VOICE) { 00930 ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name); 00931 ast_assert(fin->frametype == AST_FRAME_VOICE); 00932 } else { 00933 if (option_debug) 00934 ast_log(LOG_DEBUG, "Dropping voice to exceptionally long queue on %s\n", chan->name); 00935 ast_frfree(f); 00936 ast_channel_unlock(chan); 00937 return 0; 00938 } 00939 } 00940 AST_LIST_INSERT_TAIL(&chan->readq, f, frame_list); 00941 if (chan->alertpipe[1] > -1) { 00942 if (write(chan->alertpipe[1], &blah, sizeof(blah)) != sizeof(blah)) 00943 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s, frametype/subclass %d/%d (qlen = %d): %s!\n", 00944 chan->name, f->frametype, f->subclass, qlen, strerror(errno)); 00945 #ifdef HAVE_DAHDI 00946 } else if (chan->timingfd > -1) { 00947 ioctl(chan->timingfd, DAHDI_TIMERPING, &blah); 00948 #endif 00949 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00950 pthread_kill(chan->blocker, SIGURG); 00951 } 00952 ast_channel_unlock(chan); 00953 return 0; 00954 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 957 of file channel.c.
References ast_channel::_softhangup, ast_channel_trylock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FRAME_CONTROL, ast_queue_frame(), AST_SOFTHANGUP_DEV, and f.
Referenced by __oh323_update_info(), __sip_autodestruct(), cleanup_connection(), console_hangup(), console_hangup_deprecated(), dahdi_handle_event(), gtalk_hangup_farend(), gtalk_is_answered(), handle_onhook_message(), handle_request_bye(), handle_request_cancel(), handle_response(), handle_response_invite(), handle_soft_key_event_message(), hangup_chan(), hangup_connection(), iax2_destroy(), iax2_queue_hangup(), local_hangup(), mgcp_queue_hangup(), misdn_answer(), and retrans_pkt().
00958 { 00959 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 00960 /* Yeah, let's not change a lock-critical value without locking */ 00961 if (!ast_channel_trylock(chan)) { 00962 chan->_softhangup |= AST_SOFTHANGUP_DEV; 00963 ast_channel_unlock(chan); 00964 } 00965 return ast_queue_frame(chan, &f); 00966 }
struct ast_frame* ast_read | ( | struct ast_channel * | chan | ) |
Reads a frame.
chan | channel to read a frame from Read a frame. |
Definition at line 2378 of file channel.c.
References __ast_read().
Referenced by __adsi_transmit_messages(), __ast_play_and_record(), __ast_request_and_dial(), adsi_careful_send(), agent_ack_sleep(), agent_read(), app_exec(), ast_feature_request_and_dial(), ast_masq_park_call(), ast_recvtext(), ast_safe_sleep_conditional(), ast_tonepair(), ast_udptl_bridge(), ast_waitfordigit_full(), async_wait(), autoservice_run(), background_detect_exec(), bridge_native_loop(), bridge_p2p_loop(), channel_spy(), check_goto_on_transfer(), conf_exec(), conf_flush(), conf_run(), dahdi_bridge(), dictate_exec(), disa_exec(), do_atxfer(), do_parking_thread(), do_waiting(), echo_exec(), features_read(), find_cache(), handle_invite_replaces(), handle_recordfile(), iax_park_thread(), ices_exec(), isAnsweringMachine(), measurenoise(), misdn_bridge(), monitor_dial(), mp3_exec(), NBScat_exec(), receive_dtmf_digits(), recordthread(), rpt(), run_agi(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), wait_for_answer(), wait_for_hangup(), wait_for_winner(), waitforring_exec(), and waitstream_core().
02379 { 02380 return __ast_read(chan, 0); 02381 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 1913 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), ast_format_rate(), AST_FRAME_CNG, ast_internal_timing_enabled(), ast_log(), ast_settimeout(), f, ast_generator::generate, ast_channel::generator, generator_force(), ast_channel::generatordata, LOG_DEBUG, option_debug, ast_channel::timingfd, ast_channel::timingfunc, and ast_channel::writeformat.
Referenced by __ast_read().
01914 { 01915 if (chan->generatordata && !ast_internal_timing_enabled(chan)) { 01916 void *tmp = chan->generatordata; 01917 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01918 int res; 01919 int samples; 01920 01921 if (chan->timingfunc) { 01922 if (option_debug > 1) 01923 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 01924 ast_settimeout(chan, 0, NULL, NULL); 01925 } 01926 01927 chan->generatordata = NULL; /* reset, to let writes go through */ 01928 01929 if (f->subclass != chan->writeformat) { 01930 float factor; 01931 factor = ((float) ast_format_rate(chan->writeformat)) / ((float) ast_format_rate(f->subclass)); 01932 samples = (int) ( ((float) f->samples) * factor ); 01933 } else { 01934 samples = f->samples; 01935 } 01936 01937 if (chan->generator->generate) { 01938 generate = chan->generator->generate; 01939 } 01940 /* This unlock is here based on two assumptions that hold true at this point in the 01941 * code. 1) this function is only called from within __ast_read() and 2) all generators 01942 * call ast_write() in their generate callback. 01943 * 01944 * The reason this is added is so that when ast_write is called, the lock that occurs 01945 * there will not recursively lock the channel. Doing this will cause intended deadlock 01946 * avoidance not to work in deeper functions 01947 */ 01948 ast_channel_unlock(chan); 01949 res = generate(chan, tmp, f->datalen, samples); 01950 ast_channel_lock(chan); 01951 chan->generatordata = tmp; 01952 if (res) { 01953 if (option_debug > 1) 01954 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01955 ast_deactivate_generator(chan); 01956 } 01957 01958 } else if (f->frametype == AST_FRAME_CNG) { 01959 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 01960 if (option_debug > 1) 01961 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 01962 ast_settimeout(chan, 160, generator_force, chan); 01963 } 01964 } 01965 }
struct ast_frame* ast_read_noaudio | ( | struct ast_channel * | chan | ) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame.
chan | channel to read a frame from |
Definition at line 2383 of file channel.c.
References __ast_read().
Referenced by conf_run().
02384 { 02385 return __ast_read(chan, 1); 02386 }
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 3101 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().
03102 { 03103 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03104 }
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 3106 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().
03107 { 03108 int pos = 0; /* index in the buffer where we accumulate digits */ 03109 int to = ftimeout; 03110 03111 /* Stop if we're a zombie or need a soft hangup */ 03112 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03113 return -1; 03114 if (!len) 03115 return -1; 03116 for (;;) { 03117 int d; 03118 if (c->stream) { 03119 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03120 ast_stopstream(c); 03121 usleep(1000); 03122 if (!d) 03123 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03124 } else { 03125 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03126 } 03127 if (d < 0) 03128 return -1; 03129 if (d == 0) { 03130 s[pos]='\0'; 03131 return 1; 03132 } 03133 if (d == 1) { 03134 s[pos]='\0'; 03135 return 2; 03136 } 03137 if (!strchr(enders, d)) 03138 s[pos++] = d; 03139 if (strchr(enders, d) || (pos >= len)) { 03140 s[pos]='\0'; 03141 return 0; 03142 } 03143 to = timeout; 03144 } 03145 /* Never reached */ 03146 return 0; 03147 }
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 2456 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02457 { 02458 int c; 02459 char *buf = ast_recvtext(chan, timeout); 02460 if (buf == NULL) 02461 return -1; /* error or timeout */ 02462 c = *(unsigned char *)buf; 02463 free(buf); 02464 return c; 02465 }
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 2467 of file channel.c.
References ast_check_hangup(), AST_CONTROL_HANGUP, AST_FRAME_CONTROL, AST_FRAME_TEXT, ast_frfree, ast_read(), ast_strndup, ast_waitfor(), and f.
Referenced by ast_recvchar(), and handle_recvtext().
02468 { 02469 int res, done = 0; 02470 char *buf = NULL; 02471 02472 while (!done) { 02473 struct ast_frame *f; 02474 if (ast_check_hangup(chan)) 02475 break; 02476 res = ast_waitfor(chan, timeout); 02477 if (res <= 0) /* timeout or error */ 02478 break; 02479 timeout = res; /* update timeout */ 02480 f = ast_read(chan); 02481 if (f == NULL) 02482 break; /* no frame */ 02483 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02484 done = 1; /* force a break */ 02485 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02486 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02487 done = 1; 02488 } 02489 ast_frfree(f); 02490 } 02491 return buf; 02492 }
struct ast_channel* ast_request | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int * | status | |||
) |
Requests a channel.
type | type of channel to request | |
format | requested channel format (codec) | |
data | data to pass to the channel requester | |
status | status Request a channel of a given type, with data as optional information used by the low level module |
Definition at line 3007 of file channel.c.
References AST_CAUSE_BEARERCAPABILITY_NOTAVAIL, AST_CAUSE_NOSUCHDRIVER, AST_CAUSE_NOTDEFINED, AST_FORMAT_AUDIO_MASK, AST_FORMAT_VIDEO_MASK, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_translator_best_choice(), capabilities, ast_channel_tech::capabilities, channels, fmt, LOG_WARNING, ast_channel_tech::requester, chanlist::tech, and ast_channel_tech::type.
Referenced by __ast_request_and_dial(), agent_request(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), build_conf(), chanavail_exec(), conf_run(), connect_link(), features_alloc(), findmeexec(), ring_entry(), rpt(), rpt_call(), rpt_tele_thread(), and wait_for_answer().
03008 { 03009 struct chanlist *chan; 03010 struct ast_channel *c; 03011 int capabilities; 03012 int fmt; 03013 int res; 03014 int foo; 03015 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03016 03017 if (!cause) 03018 cause = &foo; 03019 *cause = AST_CAUSE_NOTDEFINED; 03020 03021 if (AST_LIST_LOCK(&channels)) { 03022 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03023 return NULL; 03024 } 03025 03026 AST_LIST_TRAVERSE(&backends, chan, list) { 03027 if (strcasecmp(type, chan->tech->type)) 03028 continue; 03029 03030 capabilities = chan->tech->capabilities; 03031 fmt = format & AST_FORMAT_AUDIO_MASK; 03032 res = ast_translator_best_choice(&fmt, &capabilities); 03033 if (res < 0) { 03034 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03035 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 03036 AST_LIST_UNLOCK(&channels); 03037 return NULL; 03038 } 03039 AST_LIST_UNLOCK(&channels); 03040 if (!chan->tech->requester) 03041 return NULL; 03042 03043 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03044 return NULL; 03045 03046 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03047 return c; 03048 } 03049 03050 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03051 *cause = AST_CAUSE_NOSUCHDRIVER; 03052 AST_LIST_UNLOCK(&channels); 03053 03054 return NULL; 03055 }
struct ast_channel* ast_request_and_dial | ( | const char * | type, | |
int | format, | |||
void * | data, | |||
int | timeout, | |||
int * | reason, | |||
const char * | cidnum, | |||
const char * | cidname | |||
) |
Request a channel of a given type, with data as optional information used by the low level module and attempt to place a call on it.
type | type of channel to request | |
format | requested channel format | |
data | data to pass to the channel requester | |
timeout | maximum amount of time to wait for an answer | |
reason | why unsuccessful (if unsuceessful) | |
cidnum | Caller-ID Number | |
cidname | Caller-ID Name |
Definition at line 3002 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
03003 { 03004 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 03005 }
int ast_safe_sleep | ( | struct ast_channel * | chan, | |
int | ms | |||
) |
Wait for a specied amount of time, looking for hangups.
chan | channel to wait for | |
ms | length of time in milliseconds to sleep Waits for a specified amount of time, servicing the channel as required. |
Definition at line 1179 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(), old_milliwatt_exec(), park_call_exec(), pbx_builtin_answer(), pbx_builtin_wait(), play_tone_pair(), playtone(), privacy_exec(), receive_ademco_contact_id(), rpt_call(), rpt_exec(), rpt_tele_thread(), send_morse(), send_tone_telemetry(), skinny_ss(), ss_thread(), testclient_exec(), testserver_exec(), try_calling(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01180 { 01181 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01182 }
int ast_safe_sleep_conditional | ( | struct ast_channel * | chan, | |
int | ms, | |||
int(*)(void *) | cond, | |||
void * | data | |||
) |
Wait for a specied amount of time, looking for hangups and a condition argument.
chan | channel to wait for | |
ms | length of time in milliseconds to sleep | |
cond | a function pointer for testing continue condition | |
data | argument to be passed to the condition test function |
Definition at line 1158 of file channel.c.
References ast_frfree, ast_read(), ast_waitfor(), and f.
Referenced by __login_exec(), and ast_safe_sleep().
01159 { 01160 struct ast_frame *f; 01161 01162 while (ms > 0) { 01163 if (cond && ((*cond)(data) == 0)) 01164 return 0; 01165 ms = ast_waitfor(chan, ms); 01166 if (ms < 0) 01167 return -1; 01168 if (ms > 0) { 01169 f = ast_read(chan); 01170 if (!f) 01171 return -1; 01172 ast_frfree(f); 01173 } 01174 } 01175 return 0; 01176 }
char* ast_safe_string_alloc | ( | const char * | fmt, | |
... | ||||
) |
printf the string into a correctly sized mallocd buffer, and return the buffer
return a mallocd string with the result of sprintf of the fmt and following args
Definition at line 409 of file channel.c.
References ast_malloc, and len.
Referenced by dahdi_new(), and features_new().
00410 { 00411 char *b2, buf[1]; 00412 int len; 00413 va_list args; 00414 00415 va_start(args, fmt); 00416 len = vsnprintf(buf, 1, fmt, args); 00417 va_end(args); 00418 00419 if (!(b2 = ast_malloc(len + 1))) 00420 return NULL; 00421 00422 va_start(args, fmt); 00423 vsnprintf(b2, len + 1, fmt, args); 00424 va_end(args); 00425 00426 return b2; 00427 }
int ast_say_character_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4727 of file channel.c.
References ast_say_character_str_full.
Referenced by common_exec(), pbx_builtin_saycharacters(), play_mailbox_owner(), rpt_tele_thread(), and saycharstr().
04729 { 04730 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 04731 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4721 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().
04723 { 04724 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 04725 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4715 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
04717 { 04718 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 04719 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 4739 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().
04741 { 04742 char buf[256]; 04743 04744 snprintf(buf, sizeof(buf), "%d", num); 04745 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 04746 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4709 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().
04711 { 04712 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 04713 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4703 of file channel.c.
References ast_say_number_full.
Referenced by ast_say_date_da(), ast_say_date_de(), ast_say_date_en(), ast_say_date_es(), ast_say_date_fr(), ast_say_date_ge(), ast_say_date_gr(), ast_say_date_he(), ast_say_date_nl(), ast_say_date_pt(), ast_say_date_with_format_da(), ast_say_date_with_format_de(), ast_say_date_with_format_en(), ast_say_date_with_format_es(), ast_say_date_with_format_fr(), ast_say_date_with_format_it(), ast_say_date_with_format_nl(), ast_say_date_with_format_pl(), ast_say_date_with_format_pt(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_ge(), ast_say_datetime_from_now_he(), ast_say_datetime_from_now_pt(), ast_say_datetime_he(), ast_say_datetime_pt(), ast_say_datetime_tw(), ast_say_time_de(), ast_say_time_en(), ast_say_time_es(), ast_say_time_fr(), ast_say_time_ge(), ast_say_time_gr(), ast_say_time_nl(), ast_say_time_pt(), ast_say_time_pt_BR(), ast_say_time_tw(), bridge_playfile(), conf_exec(), conf_run(), count_exec(), dictate_exec(), get_folder(), gr_say_number_female(), pbx_builtin_saynumber(), play_message(), play_message_duration(), rpt_tele_thread(), say_and_wait(), say_position(), saynum(), try_calling(), vm_intro_gr(), vm_intro_pt(), and vm_intro_pt_BR().
04705 { 04706 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 04707 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4733 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
04735 { 04736 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 04737 }
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 2566 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().
02567 { 02568 if (chan->tech->send_digit_begin) { 02569 ast_senddigit_begin(chan, digit); 02570 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02571 } 02572 02573 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02574 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Definition at line 2507 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().
02508 { 02509 /* Device does not support DTMF tones, lets fake 02510 * it by doing our own generation. */ 02511 static const char* dtmf_tones[] = { 02512 "941+1336", /* 0 */ 02513 "697+1209", /* 1 */ 02514 "697+1336", /* 2 */ 02515 "697+1477", /* 3 */ 02516 "770+1209", /* 4 */ 02517 "770+1336", /* 5 */ 02518 "770+1477", /* 6 */ 02519 "852+1209", /* 7 */ 02520 "852+1336", /* 8 */ 02521 "852+1477", /* 9 */ 02522 "697+1633", /* A */ 02523 "770+1633", /* B */ 02524 "852+1633", /* C */ 02525 "941+1633", /* D */ 02526 "941+1209", /* * */ 02527 "941+1477" /* # */ 02528 }; 02529 02530 if (!chan->tech->send_digit_begin) 02531 return 0; 02532 02533 if (!chan->tech->send_digit_begin(chan, digit)) 02534 return 0; 02535 02536 if (digit >= '0' && digit <='9') 02537 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02538 else if (digit >= 'A' && digit <= 'D') 02539 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02540 else if (digit == '*') 02541 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02542 else if (digit == '#') 02543 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02544 else { 02545 /* not handled */ 02546 if (option_debug) 02547 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02548 } 02549 02550 return 0; 02551 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Definition at line 2553 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().
02554 { 02555 int res = -1; 02556 02557 if (chan->tech->send_digit_end) 02558 res = chan->tech->send_digit_end(chan, digit, duration); 02559 02560 if (res && chan->generator) 02561 ast_playtones_stop(chan); 02562 02563 return 0; 02564 }
int ast_sendtext | ( | struct ast_channel * | chan, | |
const char * | text | |||
) |
Sends text to a channel Write text to a display on a channel.
chan | channel to act upon | |
text | string of text to send on the channel |
Definition at line 2494 of file channel.c.
References ast_check_hangup(), ast_clear_flag, AST_FLAG_BLOCKING, AST_FLAG_ZOMBIE, ast_test_flag, CHECK_BLOCKING, ast_channel_tech::send_text, and ast_channel::tech.
Referenced by agent_sendtext(), handle_sendtext(), and sendtext_exec().
02495 { 02496 int res = 0; 02497 /* Stop if we're a zombie or need a soft hangup */ 02498 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02499 return -1; 02500 CHECK_BLOCKING(chan); 02501 if (chan->tech->send_text) 02502 res = chan->tech->send_text(chan, text); 02503 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02504 return res; 02505 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 3650 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_describe_caller_presentation(), ast_strdup, ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_pres, EVENT_FLAG_CALL, free, manager_event(), and S_OR.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), callerid_write(), dahdi_read(), disa_exec(), findmeexec(), handle_setcallerid(), lookupcidname_exec(), mgcp_ss(), privacy_exec(), read_config(), setcallerid_exec(), skinny_newcall(), ss_thread(), and wait_for_answer().
03651 { 03652 ast_channel_lock(chan); 03653 03654 if (callerid) { 03655 if (chan->cid.cid_num) 03656 free(chan->cid.cid_num); 03657 chan->cid.cid_num = ast_strdup(callerid); 03658 } 03659 if (calleridname) { 03660 if (chan->cid.cid_name) 03661 free(chan->cid.cid_name); 03662 chan->cid.cid_name = ast_strdup(calleridname); 03663 } 03664 if (ani) { 03665 if (chan->cid.cid_ani) 03666 free(chan->cid.cid_ani); 03667 chan->cid.cid_ani = ast_strdup(ani); 03668 } 03669 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03670 "Channel: %s\r\n" 03671 "CallerID: %s\r\n" 03672 "CallerIDName: %s\r\n" 03673 "Uniqueid: %s\r\n" 03674 "CID-CallingPres: %d (%s)\r\n", 03675 chan->name, 03676 S_OR(chan->cid.cid_num, "<Unknown>"), 03677 S_OR(chan->cid.cid_name, "<Unknown>"), 03678 chan->uniqueid, 03679 chan->cid.cid_pres, 03680 ast_describe_caller_presentation(chan->cid.cid_pres) 03681 ); 03682 03683 ast_channel_unlock(chan); 03684 }
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 2847 of file channel.c.
References ast_channel::rawreadformat, ast_channel::readformat, ast_channel::readtrans, and set_format().
Referenced by __ast_play_and_record(), __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_do_masquerade(), attempt_reconnect(), background_detect_exec(), build_conf(), conf_run(), connect_link(), dictate_exec(), disa_exec(), do_waiting(), eagi_exec(), echo_exec(), gtalk_rtp_read(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mgcp_rtp_read(), oh323_rtp_read(), old_milliwatt_exec(), process_sdp(), rpt(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), speech_background(), and update_features().
02848 { 02849 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 02850 &chan->readtrans, 0); 02851 }
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 4470 of file channel.c.
References ast_variable::name, ast_variable::next, pbx_builtin_setvar_helper(), and ast_variable::value.
Referenced by __ast_request_and_dial(), ast_pbx_outgoing_app(), and ast_pbx_outgoing_exten().
04471 { 04472 struct ast_variable *cur; 04473 04474 for (cur = vars; cur; cur = cur->next) 04475 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04476 }
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 2853 of file channel.c.
References ast_channel::rawwriteformat, set_format(), ast_channel::writeformat, and ast_channel::writetrans.
Referenced by __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_do_masquerade(), ast_openstream_full(), ast_stopstream(), attempt_reconnect(), build_conf(), chanspy_exec(), conf_run(), connect_link(), disa_exec(), echo_exec(), extenspy_exec(), gtalk_rtp_read(), linear_alloc(), linear_release(), mgcp_rtp_read(), moh_alloc(), moh_files_release(), moh_release(), mp3_exec(), NBScat_exec(), oh323_rtp_read(), old_milliwatt_exec(), playtones_alloc(), playtones_release(), process_sdp(), rpt(), send_waveform_to_channel(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), tonepair_alloc(), tonepair_release(), and update_features().
02854 { 02855 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 02856 &chan->writetrans, 1); 02857 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 3686 of file channel.c.
References ast_channel::_state, AST_CHANNEL_NAME, ast_device_state_changed_literal(), ast_state2str(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, EVENT_FLAG_CALL, manager_event(), name, and S_OR.
Referenced by __ast_read(), __dahdi_exception(), __oh323_update_info(), agent_call(), alsa_answer(), ast_answer(), cb_events(), check_availability(), dahdi_answer(), dahdi_call(), dahdi_handle_event(), dahdi_indicate(), dahdi_read(), gtalk_call(), gtalk_newcall(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_response_invite(), handle_soft_key_event_message(), handle_stimulus_message(), iax2_call(), mgcp_answer(), mgcp_call(), mgcp_ss(), misdn_call(), misdn_indication(), nbs_call(), nbs_hangup(), oh323_answer(), oss_answer(), pbx_builtin_busy(), pbx_builtin_congestion(), phone_answer(), phone_call(), phone_exception(), phone_hangup(), phone_write(), release_chan(), sip_answer(), skinny_answer(), skinny_call(), skinny_newcall(), ss_thread(), and update_state().
03687 { 03688 char name[AST_CHANNEL_NAME], *dashptr; 03689 int oldstate = chan->_state; 03690 03691 if (oldstate == state) 03692 return 0; 03693 03694 ast_copy_string(name, chan->name, sizeof(name)); 03695 if ((dashptr = strrchr(name, '-'))) { 03696 *dashptr = '\0'; 03697 } 03698 03699 chan->_state = state; 03700 ast_device_state_changed_literal(name); 03701 /* setstate used to conditionally report Newchannel; this is no more */ 03702 manager_event(EVENT_FLAG_CALL, 03703 "Newstate", 03704 "Channel: %s\r\n" 03705 "State: %s\r\n" 03706 "CallerID: %s\r\n" 03707 "CallerIDName: %s\r\n" 03708 "Uniqueid: %s\r\n", 03709 chan->name, ast_state2str(chan->_state), 03710 S_OR(chan->cid.cid_num, "<unknown>"), 03711 S_OR(chan->cid.cid_name, "<unknown>"), 03712 chan->uniqueid); 03713 03714 return 0; 03715 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 1821 of file channel.c.
References ast_log(), LOG_DEBUG, option_debug, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_activate_generator(), ast_closestream(), ast_deactivate_generator(), ast_read_generator_actions(), and ast_readaudio_callback().
01822 { 01823 int res = -1; 01824 #ifdef HAVE_DAHDI 01825 if (c->timingfd > -1) { 01826 if (!func) { 01827 samples = 0; 01828 data = 0; 01829 } 01830 if (option_debug) 01831 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 01832 res = ioctl(c->timingfd, DAHDI_TIMERCONFIG, &samples); 01833 c->timingfunc = func; 01834 c->timingdata = data; 01835 } 01836 #endif 01837 return res; 01838 }
int ast_shutting_down | ( | void | ) |
Returns non-zero if Asterisk is being shut down.
Returns non-zero if Asterisk is being shut down
Definition at line 461 of file channel.c.
Referenced by handle_request_options().
00462 { 00463 return shutting_down; 00464 }
int ast_softhangup | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel.
chan | channel to be soft-hung-up Call the protocol layer, but don't destroy the channel structure (use this if you are trying to safely hangup a channel managed by another thread. | |
cause | Ast hangupcause for hangup |
Definition at line 1422 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_softhangup_nolock().
Referenced by __ast_module_user_hangup_all(), __login_exec(), __unload_module(), action_hangup(), agent_hangup(), agent_logoff(), ast_begin_shutdown(), ast_dial_join(), connect_link(), dahdi_handle_event(), function_ilink(), handle_hangup(), handle_link_data(), handle_softhangup(), manager_park(), read_agent_config(), rpt(), rpt_call(), rpt_do_restart(), sla_handle_hold_event(), softhangup_exec(), start_spying(), startmon(), and unload_module().
01423 { 01424 int res; 01425 ast_channel_lock(chan); 01426 res = ast_softhangup_nolock(chan, cause); 01427 ast_channel_unlock(chan); 01428 return res; 01429 }
int ast_softhangup_nolock | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel (no channel lock).
chan | channel to be soft-hung-up | |
cause | Ast hangupcause for hangup (see cause.h) |
Definition at line 1408 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(), dahdi_softhangup_all(), do_monitor(), oh323_indicate(), sip_indicate(), and skinny_indicate().
01409 { 01410 if (option_debug) 01411 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01412 /* Inform channel driver that we need to be hung up, if it cares */ 01413 chan->_softhangup |= cause; 01414 ast_queue_frame(chan, &ast_null_frame); 01415 /* Interrupt any poll call or such */ 01416 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01417 pthread_kill(chan->blocker, SIGURG); 01418 return 0; 01419 }
char* ast_state2str | ( | enum | ast_channel_state | ) |
Gives the string form of a given channel state.
ast_channel_state | state to get the name of Give a name to a state Returns the text form of the binary state given |
Definition at line 600 of file channel.c.
References AST_STATE_BUSY, AST_STATE_DIALING, AST_STATE_DIALING_OFFHOOK, AST_STATE_DOWN, AST_STATE_OFFHOOK, AST_STATE_PRERING, AST_STATE_RESERVED, AST_STATE_RING, AST_STATE_RINGING, AST_STATE_UP, and STATE2STR_BUFSIZE.
Referenced by action_status(), agent_hangup(), ast_channel_alloc(), ast_setstate(), attempt_transfer(), func_channel_read(), handle_chanlist(), handle_chanlist_deprecated(), handle_invite_replaces(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_new(), serialize_showchan(), and sip_hangup().
00601 { 00602 char *buf; 00603 00604 switch(state) { 00605 case AST_STATE_DOWN: 00606 return "Down"; 00607 case AST_STATE_RESERVED: 00608 return "Rsrvd"; 00609 case AST_STATE_OFFHOOK: 00610 return "OffHook"; 00611 case AST_STATE_DIALING: 00612 return "Dialing"; 00613 case AST_STATE_RING: 00614 return "Ring"; 00615 case AST_STATE_RINGING: 00616 return "Ringing"; 00617 case AST_STATE_UP: 00618 return "Up"; 00619 case AST_STATE_BUSY: 00620 return "Busy"; 00621 case AST_STATE_DIALING_OFFHOOK: 00622 return "Dialing Offhook"; 00623 case AST_STATE_PRERING: 00624 return "Pre-ring"; 00625 default: 00626 if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE))) 00627 return "Unknown"; 00628 snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state); 00629 return buf; 00630 } 00631 }
int ast_str2cause | ( | const char * | name | ) |
Convert a symbolic hangup cause to number.
name | string form of the cause Returns the cause code |
Definition at line 588 of file channel.c.
References causes.
Referenced by pbx_builtin_hangup().
00589 { 00590 int x; 00591 00592 for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++) 00593 if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0) 00594 return causes[x].cause; 00595 00596 return -1; 00597 }
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 4342 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04343 { 04344 int res; 04345 04346 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04347 return res; 04348 04349 /* Give us some wiggle room */ 04350 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04351 struct ast_frame *f = ast_read(chan); 04352 if (f) 04353 ast_frfree(f); 04354 else 04355 return -1; 04356 } 04357 return 0; 04358 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4324 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().
04325 { 04326 struct tonepair_def d = { 0, }; 04327 04328 d.freq1 = freq1; 04329 d.freq2 = freq2; 04330 d.duration = duration; 04331 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04332 if (ast_activate_generator(chan, &tonepair, &d)) 04333 return -1; 04334 return 0; 04335 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4337 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04338 { 04339 ast_deactivate_generator(chan); 04340 }
int ast_transfer | ( | struct ast_channel * | chan, | |
char * | dest | |||
) |
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested.
Called by:
Definition at line 3083 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().
03084 { 03085 int res = -1; 03086 03087 /* Stop if we're a zombie or need a soft hangup */ 03088 ast_channel_lock(chan); 03089 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03090 if (chan->tech->transfer) { 03091 res = chan->tech->transfer(chan, dest); 03092 if (!res) 03093 res = 1; 03094 } else 03095 res = 0; 03096 } 03097 ast_channel_unlock(chan); 03098 return res; 03099 }
char* ast_transfercapability2str | ( | int | transfercapability | ) | const |
Gives the string form of a given transfer capability.
transfercapability | transfercapabilty to get the name of Give a name to a transfercapbility See above Returns the text form of the binary transfer capbility |
Definition at line 634 of file channel.c.
References AST_TRANS_CAP_3_1K_AUDIO, AST_TRANS_CAP_DIGITAL, AST_TRANS_CAP_DIGITAL_W_TONES, AST_TRANS_CAP_RESTRICTED_DIGITAL, AST_TRANS_CAP_SPEECH, and AST_TRANS_CAP_VIDEO.
Referenced by cb_events(), dahdi_call(), dahdi_new(), misdn_call(), and oh323_call().
00635 { 00636 switch(transfercapability) { 00637 case AST_TRANS_CAP_SPEECH: 00638 return "SPEECH"; 00639 case AST_TRANS_CAP_DIGITAL: 00640 return "DIGITAL"; 00641 case AST_TRANS_CAP_RESTRICTED_DIGITAL: 00642 return "RESTRICTED_DIGITAL"; 00643 case AST_TRANS_CAP_3_1K_AUDIO: 00644 return "3K1AUDIO"; 00645 case AST_TRANS_CAP_DIGITAL_W_TONES: 00646 return "DIGITAL_W_TONES"; 00647 case AST_TRANS_CAP_VIDEO: 00648 return "VIDEO"; 00649 default: 00650 return "UNKNOWN"; 00651 } 00652 }
void ast_uninstall_music_functions | ( | void | ) |
Definition at line 4405 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by unload_module().
04406 { 04407 ast_moh_start_ptr = NULL; 04408 ast_moh_stop_ptr = NULL; 04409 ast_moh_cleanup_ptr = NULL; 04410 }
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 1805 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(), recordthread(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), wait_for_hangup(), waitforring_exec(), and waitstream_core().
01806 { 01807 int oldms = ms; /* -1 if no timeout */ 01808 01809 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 01810 if ((ms < 0) && (oldms < 0)) 01811 ms = 0; 01812 return ms; 01813 }
struct ast_channel* ast_waitfor_n | ( | struct ast_channel ** | chan, | |
int | n, | |||
int * | ms | |||
) |
Waits for input on a group of channels Wait for input on an array of channels for a given # of milliseconds.
chan | an array of pointers to channels | |
n | number of channels that are to be waited upon | |
ms | time "ms" is modified in-place, if applicable |
Definition at line 1800 of file channel.c.
References ast_waitfor_nandfds().
Referenced by ast_feature_request_and_dial(), ast_udptl_bridge(), autoservice_run(), bridge_native_loop(), dahdi_bridge(), misdn_bridge(), monitor_dial(), rpt(), wait_for_answer(), and wait_for_winner().
01801 { 01802 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 01803 }
int ast_waitfor_n_fd | ( | int * | fds, | |
int | n, | |||
int * | ms, | |||
int * | exception | |||
) |
Waits for input on an fd This version works on fd's only. Be careful with it.
Definition at line 1644 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01645 { 01646 int winner = -1; 01647 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01648 return winner; 01649 }
struct ast_channel* ast_waitfor_nandfds | ( | struct ast_channel ** | chan, | |
int | n, | |||
int * | fds, | |||
int | nfds, | |||
int * | exception, | |||
int * | outfd, | |||
int * | ms | |||
) |
Waits for activity on a group of channels.
chan | an array of pointers to channels | |
n | number of channels that are to be waited upon | |
fds | an array of fds to wait upon | |
nfds | the number of fds to wait upon | |
exception | exception flag | |
outfd | fd that had activity on it | |
ms | how long the wait was Big momma function here. Wait for activity on any of the n channels, or any of the nfds file descriptors. |
Definition at line 1652 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, LOG_WARNING, poll(), POLLPRI, and ast_channel::whentohangup.
Referenced by app_exec(), ast_waitfor(), ast_waitfor_n(), ast_waitfor_n_fd(), ast_waitfordigit_full(), conf_run(), find_cache(), run_agi(), and waitstream_core().
01654 { 01655 struct timeval start = { 0 , 0 }; 01656 struct pollfd *pfds = NULL; 01657 int res; 01658 long rms; 01659 int x, y, max; 01660 int sz; 01661 time_t now = 0; 01662 long whentohangup = 0, diff; 01663 struct ast_channel *winner = NULL; 01664 struct fdmap { 01665 int chan; 01666 int fdno; 01667 } *fdmap = NULL; 01668 01669 if ((sz = n * AST_MAX_FDS + nfds)) { 01670 pfds = alloca(sizeof(*pfds) * sz); 01671 fdmap = alloca(sizeof(*fdmap) * sz); 01672 } 01673 01674 if (outfd) 01675 *outfd = -99999; 01676 if (exception) 01677 *exception = 0; 01678 01679 /* Perform any pending masquerades */ 01680 for (x=0; x < n; x++) { 01681 ast_channel_lock(c[x]); 01682 if (c[x]->masq) { 01683 if (ast_do_masquerade(c[x])) { 01684 ast_log(LOG_WARNING, "Masquerade failed\n"); 01685 *ms = -1; 01686 ast_channel_unlock(c[x]); 01687 return NULL; 01688 } 01689 } 01690 if (c[x]->whentohangup) { 01691 if (!whentohangup) 01692 time(&now); 01693 diff = c[x]->whentohangup - now; 01694 if (diff < 1) { 01695 /* Should already be hungup */ 01696 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01697 ast_channel_unlock(c[x]); 01698 return c[x]; 01699 } 01700 if (!whentohangup || (diff < whentohangup)) 01701 whentohangup = diff; 01702 } 01703 ast_channel_unlock(c[x]); 01704 } 01705 /* Wait full interval */ 01706 rms = *ms; 01707 if (whentohangup) { 01708 rms = whentohangup * 1000; /* timeout in milliseconds */ 01709 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01710 rms = *ms; 01711 } 01712 /* 01713 * Build the pollfd array, putting the channels' fds first, 01714 * followed by individual fds. Order is important because 01715 * individual fd's must have priority over channel fds. 01716 */ 01717 max = 0; 01718 for (x=0; x<n; x++) { 01719 for (y=0; y<AST_MAX_FDS; y++) { 01720 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01721 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01722 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01723 } 01724 CHECK_BLOCKING(c[x]); 01725 } 01726 /* Add the individual fds */ 01727 for (x=0; x<nfds; x++) { 01728 fdmap[max].chan = -1; 01729 max += ast_add_fd(&pfds[max], fds[x]); 01730 } 01731 01732 if (*ms > 0) 01733 start = ast_tvnow(); 01734 01735 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01736 do { 01737 int kbrms = rms; 01738 if (kbrms > 600000) 01739 kbrms = 600000; 01740 res = poll(pfds, max, kbrms); 01741 if (!res) 01742 rms -= kbrms; 01743 } while (!res && (rms > 0)); 01744 } else { 01745 res = poll(pfds, max, rms); 01746 } 01747 for (x=0; x<n; x++) 01748 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01749 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01750 if (errno != EINTR) 01751 *ms = -1; 01752 return NULL; 01753 } 01754 if (whentohangup) { /* if we have a timeout, check who expired */ 01755 time(&now); 01756 for (x=0; x<n; x++) { 01757 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01758 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01759 if (winner == NULL) 01760 winner = c[x]; 01761 } 01762 } 01763 } 01764 if (res == 0) { /* no fd ready, reset timeout and done */ 01765 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01766 return winner; 01767 } 01768 /* 01769 * Then check if any channel or fd has a pending event. 01770 * Remember to check channels first and fds last, as they 01771 * must have priority on setting 'winner' 01772 */ 01773 for (x = 0; x < max; x++) { 01774 res = pfds[x].revents; 01775 if (res == 0) 01776 continue; 01777 if (fdmap[x].chan >= 0) { /* this is a channel */ 01778 winner = c[fdmap[x].chan]; /* override previous winners */ 01779 if (res & POLLPRI) 01780 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01781 else 01782 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01783 winner->fdno = fdmap[x].fdno; 01784 } else { /* this is an fd */ 01785 if (outfd) 01786 *outfd = pfds[x].fd; 01787 if (exception) 01788 *exception = (res & POLLPRI) ? -1 : 0; 01789 winner = NULL; 01790 } 01791 } 01792 if (*ms > 0) { 01793 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01794 if (*ms < 0) 01795 *ms = 0; 01796 } 01797 return winner; 01798 }
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 1816 of file channel.c.
References ast_waitfordigit_full().
Referenced by _while_exec(), advanced_options(), ast_adsi_get_cpeid(), ast_adsi_get_cpeinfo(), ast_adsi_print(), ast_adsi_read_encoded_dtmf(), ast_adsi_transmit_message_full(), ast_app_dtget(), ast_control_streamfile(), ast_record_review(), collect_digits(), common_exec(), cpeid_exec(), dialout(), directory_exec(), do_atxfer(), forward_message(), get_folder(), ivr_dispatch(), mgcp_ss(), my_getsigstr(), pbx_builtin_waitexten(), play_mailbox_owner(), play_record_review(), read_exec(), read_newoption(), retrydial_exec(), sendnoise(), ss_thread(), testclient_exec(), testserver_exec(), vm_execmain(), vm_forwardoptions(), vm_instructions(), vm_options(), vm_tempgreeting(), wait_a_bit(), and wait_our_turn().
01817 { 01818 return ast_waitfordigit_full(c, ms, -1, -1); 01819 }
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 1840 of file channel.c.
References ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_FLAG_END_DTMF_ONLY, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_VOICE, ast_frfree, ast_log(), ast_read(), ast_set_flag, ast_test_flag, ast_waitfor_nandfds(), errno, f, and LOG_WARNING.
Referenced by ast_readstring_full(), ast_waitfordigit(), handle_getoption(), and handle_waitfordigit().
01841 { 01842 /* Stop if we're a zombie or need a soft hangup */ 01843 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 01844 return -1; 01845 01846 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 01847 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 01848 01849 /* Wait for a digit, no more than ms milliseconds total. */ 01850 while (ms) { 01851 struct ast_channel *rchan; 01852 int outfd; 01853 01854 errno = 0; 01855 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 01856 if (!rchan && outfd < 0 && ms) { 01857 if (errno == 0 || errno == EINTR) 01858 continue; 01859 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 01860 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01861 return -1; 01862 } else if (outfd > -1) { 01863 /* The FD we were watching has something waiting */ 01864 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01865 return 1; 01866 } else if (rchan) { 01867 int res; 01868 struct ast_frame *f = ast_read(c); 01869 if (!f) 01870 return -1; 01871 01872 switch(f->frametype) { 01873 case AST_FRAME_DTMF_BEGIN: 01874 break; 01875 case AST_FRAME_DTMF_END: 01876 res = f->subclass; 01877 ast_frfree(f); 01878 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01879 return res; 01880 case AST_FRAME_CONTROL: 01881 switch(f->subclass) { 01882 case AST_CONTROL_HANGUP: 01883 ast_frfree(f); 01884 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01885 return -1; 01886 case AST_CONTROL_RINGING: 01887 case AST_CONTROL_ANSWER: 01888 case AST_CONTROL_SRCUPDATE: 01889 /* Unimportant */ 01890 break; 01891 default: 01892 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 01893 break; 01894 } 01895 break; 01896 case AST_FRAME_VOICE: 01897 /* Write audio if appropriate */ 01898 if (audiofd > -1) 01899 write(audiofd, f->data, f->datalen); 01900 default: 01901 /* Ignore */ 01902 break; 01903 } 01904 ast_frfree(f); 01905 } 01906 } 01907 01908 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 01909 01910 return 0; /* Time is up */ 01911 }
struct ast_channel* ast_walk_channel_by_exten_locked | ( | const struct ast_channel * | chan, | |
const char * | exten, | |||
const char * | context | |||
) |
Get next channel by exten (and optionally context) and lock it.
Definition at line 1151 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01153 { 01154 return channel_find_locked(chan, NULL, 0, context, exten); 01155 }
struct ast_channel* ast_walk_channel_by_name_prefix_locked | ( | const struct ast_channel * | chan, | |
const char * | name, | |||
const int | namelen | |||
) |
Get channel by name prefix (locks channel).
Definition at line 1138 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01140 { 01141 return channel_find_locked(chan, name, namelen, NULL, NULL); 01142 }
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 2605 of file channel.c.
References ast_channel::_softhangup, AST_AUDIOHOOK_DIRECTION_WRITE, ast_audiohook_write_list(), ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_UNHOLD, ast_deactivate_generator(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_WRITE_INT, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_MODEM, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, ast_log(), AST_MONITOR_RUNNING, ast_seekstream(), ast_senddigit_begin(), ast_senddigit_end(), AST_SOFTHANGUP_DEV, ast_test_flag, ast_translate(), ast_writestream(), ast_channel::audiohooks, CHECK_BLOCKING, ast_frame::data, ast_frame::datalen, DEBUGCHAN_FLAG, f, ast_channel::fout, FRAMECOUNT_INC, ast_frame::frametype, ast_channel::generatordata, ast_channel_tech::indicate, ast_channel::insmpl, ast_frame::len, LOG_DEBUG, LOG_WARNING, ast_channel::masq, ast_channel::masqr, ast_channel::monitor, MONITOR_DELAY, option_debug, ast_channel::outsmpl, ast_channel::rawwriteformat, SEEK_FORCECUR, ast_channel_tech::send_html, ast_channel_tech::send_text, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel_tech::write, ast_channel_monitor::write_stream, ast_channel_tech::write_video, and ast_channel::writetrans.
Referenced by adsi_careful_send(), agent_write(), ast_prod(), ast_readaudio_callback(), ast_readvideo_callback(), ast_udptl_bridge(), ast_write_video(), bridge_native_loop(), conf_queue_dtmf(), conf_run(), dahdi_bridge(), dictate_exec(), echo_exec(), features_write(), function_ilink(), gen_generate(), handle_link_data(), jb_get_and_deliver(), linear_generator(), milliwatt_generate(), misdn_bridge(), moh_files_generator(), moh_generate(), mp3_exec(), NBScat_exec(), rpt(), send_link_dtmf(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), spy_generate(), and wait_for_answer().
02606 { 02607 int res = -1; 02608 int count = 0; 02609 struct ast_frame *f = NULL, *f2 = NULL; 02610 02611 /*Deadlock avoidance*/ 02612 while(ast_channel_trylock(chan)) { 02613 /*cannot goto done since the channel is not locked*/ 02614 if(count++ > 10) { 02615 if(option_debug) 02616 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 02617 return 0; 02618 } 02619 usleep(1); 02620 } 02621 /* Stop if we're a zombie or need a soft hangup */ 02622 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02623 goto done; 02624 02625 /* Handle any pending masquerades */ 02626 if (chan->masq && ast_do_masquerade(chan)) { 02627 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02628 goto done; 02629 } 02630 if (chan->masqr) { 02631 res = 0; /* XXX explain, why 0 ? */ 02632 goto done; 02633 } 02634 if (chan->generatordata) { 02635 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02636 ast_deactivate_generator(chan); 02637 else { 02638 if (fr->frametype == AST_FRAME_DTMF_END) { 02639 /* There is a generator running while we're in the middle of a digit. 02640 * It's probably inband DTMF, so go ahead and pass it so it can 02641 * stop the generator */ 02642 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02643 ast_channel_unlock(chan); 02644 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02645 ast_channel_lock(chan); 02646 CHECK_BLOCKING(chan); 02647 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 02648 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 02649 res = (chan->tech->indicate == NULL) ? 0 : 02650 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02651 } 02652 res = 0; /* XXX explain, why 0 ? */ 02653 goto done; 02654 } 02655 } 02656 /* High bit prints debugging */ 02657 if (chan->fout & DEBUGCHAN_FLAG) 02658 ast_frame_dump(chan->name, fr, ">>"); 02659 CHECK_BLOCKING(chan); 02660 switch(fr->frametype) { 02661 case AST_FRAME_CONTROL: 02662 res = (chan->tech->indicate == NULL) ? 0 : 02663 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02664 break; 02665 case AST_FRAME_DTMF_BEGIN: 02666 if (chan->audiohooks) { 02667 struct ast_frame *old_frame = fr; 02668 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02669 if (old_frame != fr) 02670 f = fr; 02671 } 02672 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02673 ast_channel_unlock(chan); 02674 res = ast_senddigit_begin(chan, fr->subclass); 02675 ast_channel_lock(chan); 02676 CHECK_BLOCKING(chan); 02677 break; 02678 case AST_FRAME_DTMF_END: 02679 if (chan->audiohooks) { 02680 struct ast_frame *old_frame = fr; 02681 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02682 if (old_frame != fr) 02683 f = fr; 02684 } 02685 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02686 ast_channel_unlock(chan); 02687 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02688 ast_channel_lock(chan); 02689 CHECK_BLOCKING(chan); 02690 break; 02691 case AST_FRAME_TEXT: 02692 res = (chan->tech->send_text == NULL) ? 0 : 02693 chan->tech->send_text(chan, (char *) fr->data); 02694 break; 02695 case AST_FRAME_HTML: 02696 res = (chan->tech->send_html == NULL) ? 0 : 02697 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02698 break; 02699 case AST_FRAME_VIDEO: 02700 /* XXX Handle translation of video codecs one day XXX */ 02701 res = (chan->tech->write_video == NULL) ? 0 : 02702 chan->tech->write_video(chan, fr); 02703 break; 02704 case AST_FRAME_MODEM: 02705 res = (chan->tech->write == NULL) ? 0 : 02706 chan->tech->write(chan, fr); 02707 break; 02708 case AST_FRAME_VOICE: 02709 if (chan->tech->write == NULL) 02710 break; /*! \todo XXX should return 0 maybe ? */ 02711 02712 if (chan->audiohooks) { 02713 struct ast_frame *old_frame = fr; 02714 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 02715 if (old_frame != fr) 02716 f2 = fr; 02717 } 02718 02719 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02720 if (fr->subclass == chan->rawwriteformat) 02721 f = fr; 02722 else 02723 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02724 02725 /* If we have no frame of audio, then we have to bail out */ 02726 if (!f) { 02727 res = 0; 02728 break; 02729 } 02730 02731 /* If Monitor is running on this channel, then we have to write frames out there too */ 02732 if (chan->monitor && chan->monitor->write_stream) { 02733 /* XXX must explain this code */ 02734 #ifndef MONITOR_CONSTANT_DELAY 02735 int jump = chan->insmpl - chan->outsmpl - 4 * f->samples; 02736 if (jump >= 0) { 02737 jump = chan->insmpl - chan->outsmpl; 02738 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 02739 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02740 chan->outsmpl += jump + f->samples; 02741 } else 02742 chan->outsmpl += f->samples; 02743 #else 02744 int jump = chan->insmpl - chan->outsmpl; 02745 if (jump - MONITOR_DELAY >= 0) { 02746 if (ast_seekstream(chan->monitor->write_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02747 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02748 chan->outsmpl += jump; 02749 } else 02750 chan->outsmpl += f->samples; 02751 #endif 02752 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02753 if (ast_writestream(chan->monitor->write_stream, f) < 0) 02754 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 02755 } 02756 } 02757 02758 if (f) 02759 res = chan->tech->write(chan,f); 02760 else 02761 res = 0; 02762 break; 02763 case AST_FRAME_NULL: 02764 case AST_FRAME_IAX: 02765 /* Ignore these */ 02766 res = 0; 02767 break; 02768 default: 02769 /* At this point, fr is the incoming frame and f is NULL. Channels do 02770 * not expect to get NULL as a frame pointer and will segfault. Hence, 02771 * we output the original frame passed in. */ 02772 res = chan->tech->write(chan, fr); 02773 break; 02774 } 02775 02776 if (f && f != fr) 02777 ast_frfree(f); 02778 if (f2) 02779 ast_frfree(f2); 02780 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02781 /* Consider a write failure to force a soft hangup */ 02782 if (res < 0) 02783 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02784 else { 02785 chan->fout = FRAMECOUNT_INC(chan->fout); 02786 } 02787 done: 02788 ast_channel_unlock(chan); 02789 return res; 02790 }
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 2594 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02595 { 02596 int res; 02597 if (!chan->tech->write_video) 02598 return 0; 02599 res = ast_write(chan, fr); 02600 if (!res) 02601 res = 1; 02602 return res; 02603 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 3727 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().
03728 { 03729 int min = 0, sec = 0, check; 03730 03731 check = ast_autoservice_start(peer); 03732 if (check) 03733 return; 03734 03735 if (remain > 0) { 03736 if (remain / 60 > 1) { 03737 min = remain / 60; 03738 sec = remain % 60; 03739 } else { 03740 sec = remain; 03741 } 03742 } 03743 03744 if (!strcmp(sound,"timeleft")) { /* Queue support */ 03745 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 03746 if (min) { 03747 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 03748 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 03749 } 03750 if (sec) { 03751 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 03752 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 03753 } 03754 } else { 03755 ast_stream_and_wait(chan, sound, chan->language, ""); 03756 } 03757 03758 ast_autoservice_stop(peer); 03759 }
static struct ast_channel* channel_find_locked | ( | const struct ast_channel * | prev, | |
const char * | name, | |||
const int | namelen, | |||
const char * | context, | |||
const char * | exten | |||
) | [static] |
Helper function to find channels.
It supports these modes:
prev != NULL : get channel next in list after prev name != NULL : get channel with matching name name != NULL && namelen != 0 : get channel whose name starts with prefix exten != NULL : get channel whose exten or macroexten matches context != NULL && exten != NULL : get channel whose context or macrocontext
It returns with the channel's lock held. If getting the individual lock fails, unlock and retry quickly up to 10 times, then give up.
XXX also note that accessing fields (e.g. c->name in ast_log()) can only be done with the lock held or someone could delete the object while we work on it. This causes some ugliness in the code. Note that removing the first ast_log() may be harmful, as it would shorten the retry period and possibly cause failures. We should definitely go for a better scheme that is deadlock-free.
Definition at line 1034 of file channel.c.
References ast_channel_trylock, AST_LIST_LOCK, AST_LIST_NEXT, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), channels, ast_channel::context, ast_channel::exten, LOG_DEBUG, ast_channel::macrocontext, ast_channel::macroexten, and option_debug.
Referenced by ast_channel_walk_locked(), ast_get_channel_by_exten_locked(), ast_get_channel_by_name_locked(), ast_get_channel_by_name_prefix_locked(), ast_walk_channel_by_exten_locked(), and ast_walk_channel_by_name_prefix_locked().
01037 { 01038 const char *msg = prev ? "deadlock" : "initial deadlock"; 01039 int retries; 01040 struct ast_channel *c; 01041 const struct ast_channel *_prev = prev; 01042 01043 for (retries = 0; retries < 200; retries++) { 01044 int done; 01045 /* Reset prev on each retry. See note below for the reason. */ 01046 prev = _prev; 01047 AST_LIST_LOCK(&channels); 01048 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01049 if (prev) { /* look for last item, first, before any evaluation */ 01050 if (c != prev) /* not this one */ 01051 continue; 01052 /* found, prepare to return c->next */ 01053 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01054 /*!\note 01055 * We're done searching through the list for the previous item. 01056 * Any item after this point, we want to evaluate for a match. 01057 * If we didn't set prev to NULL here, then we would only 01058 * return matches for the first matching item (since the above 01059 * "if (c != prev)" would not permit any other potential 01060 * matches to reach the additional matching logic, below). 01061 * Instead, it would just iterate until it once again found the 01062 * original match, then iterate down to the end of the list and 01063 * quit. 01064 */ 01065 prev = NULL; 01066 } 01067 if (name) { /* want match by name */ 01068 if ((!namelen && strcasecmp(c->name, name)) || 01069 (namelen && strncasecmp(c->name, name, namelen))) 01070 continue; /* name match failed */ 01071 } else if (exten) { 01072 if (context && strcasecmp(c->context, context) && 01073 strcasecmp(c->macrocontext, context)) 01074 continue; /* context match failed */ 01075 if (strcasecmp(c->exten, exten) && 01076 strcasecmp(c->macroexten, exten)) 01077 continue; /* exten match failed */ 01078 } 01079 /* if we get here, c points to the desired record */ 01080 break; 01081 } 01082 /* exit if chan not found or mutex acquired successfully */ 01083 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01084 done = c == NULL || ast_channel_trylock(c) == 0; 01085 if (!done) { 01086 if (option_debug) 01087 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01088 if (retries == 199) { 01089 /* We are about to fail due to a deadlock, so report this 01090 * while we still have the list lock. 01091 */ 01092 if (option_debug) 01093 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01094 /* As we have deadlocked, we will skip this channel and 01095 * see if there is another match. 01096 * NOTE: No point doing this for a full-name match, 01097 * as there can be no more matches. 01098 */ 01099 if (!(name && !namelen)) { 01100 prev = c; 01101 retries = -1; 01102 } 01103 } 01104 } 01105 AST_LIST_UNLOCK(&channels); 01106 if (done) 01107 return c; 01108 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01109 * starting from the beginning of the list we can restore our saved pointer to the previous 01110 * channel and start from there. 01111 */ 01112 prev = _prev; 01113 usleep(1); /* give other threads a chance before retrying */ 01114 } 01115 01116 return NULL; 01117 }
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 4557 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
04558 { 04559 switch (reason) { 04560 case CHANNEL_MODULE_LOAD: 04561 return "LOAD (Channel module load)"; 04562 04563 case CHANNEL_MODULE_RELOAD: 04564 return "RELOAD (Channel module reload)"; 04565 04566 case CHANNEL_CLI_RELOAD: 04567 return "CLIRELOAD (Channel module reload by CLI command)"; 04568 04569 default: 04570 return "MANAGERRELOAD (Channel module reload by manager)"; 04571 } 04572 };
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 3365 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().
03366 { 03367 struct ast_var_t *current, *newvar; 03368 /* Append variables from clone channel into original channel */ 03369 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03370 if (AST_LIST_FIRST(&clone->varshead)) 03371 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03372 03373 /* then, dup the varshead list into the clone */ 03374 03375 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 03376 newvar = ast_var_assign(current->name, current->value); 03377 if (newvar) 03378 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 03379 } 03380 }
static char* complete_channeltypes | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 334 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00335 { 00336 struct chanlist *cl; 00337 int which = 0; 00338 int wordlen; 00339 char *ret = NULL; 00340 00341 if (pos != 3) 00342 return NULL; 00343 00344 wordlen = strlen(word); 00345 00346 AST_LIST_TRAVERSE(&backends, cl, list) { 00347 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00348 ret = strdup(cl->tech->type); 00349 break; 00350 } 00351 } 00352 00353 return ret; 00354 }
static char* complete_channeltypes_deprecated | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 312 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00313 { 00314 struct chanlist *cl; 00315 int which = 0; 00316 int wordlen; 00317 char *ret = NULL; 00318 00319 if (pos != 2) 00320 return NULL; 00321 00322 wordlen = strlen(word); 00323 00324 AST_LIST_TRAVERSE(&backends, cl, list) { 00325 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00326 ret = strdup(cl->tech->type); 00327 break; 00328 } 00329 } 00330 00331 return ret; 00332 }
static void free_cid | ( | struct ast_callerid * | cid | ) | [static] |
Definition at line 1184 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().
01185 { 01186 if (cid->cid_dnid) 01187 free(cid->cid_dnid); 01188 if (cid->cid_num) 01189 free(cid->cid_num); 01190 if (cid->cid_name) 01191 free(cid->cid_name); 01192 if (cid->cid_ani) 01193 free(cid->cid_ani); 01194 if (cid->cid_rdnis) 01195 free(cid->cid_rdnis); 01196 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1431 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().
01432 { 01433 if (clone->writetrans) 01434 ast_translator_free_path(clone->writetrans); 01435 if (clone->readtrans) 01436 ast_translator_free_path(clone->readtrans); 01437 clone->writetrans = NULL; 01438 clone->readtrans = NULL; 01439 clone->rawwriteformat = clone->nativeformats; 01440 clone->rawreadformat = clone->nativeformats; 01441 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1585 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), AST_FORMAT_AUDIO_MASK, ast_format_rate(), ast_log(), LOG_DEBUG, and option_debug.
Referenced by ast_activate_generator(), and ast_read_generator_actions().
01586 { 01587 /* Called if generator doesn't have data */ 01588 void *tmp; 01589 int res; 01590 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01591 struct ast_channel *chan = (struct ast_channel *)data; 01592 01593 ast_channel_lock(chan); 01594 tmp = chan->generatordata; 01595 chan->generatordata = NULL; 01596 if (chan->generator) 01597 generate = chan->generator->generate; 01598 ast_channel_unlock(chan); 01599 01600 if (!tmp || !generate) 01601 return 0; 01602 01603 res = generate(chan, tmp, 0, ast_format_rate(chan->writeformat & AST_FORMAT_AUDIO_MASK) / 50); 01604 01605 chan->generatordata = tmp; 01606 01607 if (res) { 01608 if (option_debug) 01609 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01610 ast_deactivate_generator(chan); 01611 } 01612 01613 return 0; 01614 }
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 2792 of file channel.c.
References ast_channel_lock, ast_channel_unlock, AST_FORMAT_AUDIO_MASK, ast_getformatname(), ast_getformatname_multiple(), ast_log(), ast_translator_best_choice(), ast_translator_build_path(), ast_translator_free_path(), LOG_DEBUG, LOG_WARNING, ast_channel::nativeformats, and option_debug.
Referenced by ast_set_read_format(), and ast_set_write_format().
02794 { 02795 int native; 02796 int res; 02797 char from[200], to[200]; 02798 02799 /* Make sure we only consider audio */ 02800 fmt &= AST_FORMAT_AUDIO_MASK; 02801 02802 native = chan->nativeformats; 02803 /* Find a translation path from the native format to one of the desired formats */ 02804 if (!direction) 02805 /* reading */ 02806 res = ast_translator_best_choice(&fmt, &native); 02807 else 02808 /* writing */ 02809 res = ast_translator_best_choice(&native, &fmt); 02810 02811 if (res < 0) { 02812 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 02813 ast_getformatname_multiple(from, sizeof(from), native), 02814 ast_getformatname_multiple(to, sizeof(to), fmt)); 02815 return -1; 02816 } 02817 02818 /* Now we have a good choice for both. */ 02819 ast_channel_lock(chan); 02820 02821 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 02822 /* the channel is already in these formats, so nothing to do */ 02823 ast_channel_unlock(chan); 02824 return 0; 02825 } 02826 02827 *rawformat = native; 02828 /* User perspective is fmt */ 02829 *format = fmt; 02830 /* Free any read translation we have right now */ 02831 if (*trans) 02832 ast_translator_free_path(*trans); 02833 /* Build a translation path from the raw format to the desired format */ 02834 if (!direction) 02835 /* reading */ 02836 *trans = ast_translator_build_path(*format, *rawformat); 02837 else 02838 /* writing */ 02839 *trans = ast_translator_build_path(*rawformat, *format); 02840 ast_channel_unlock(chan); 02841 if (option_debug) 02842 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 02843 direction ? "write" : "read", ast_getformatname(fmt)); 02844 return 0; 02845 }
static int show_channeltype | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 259 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, 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.
00260 { 00261 struct chanlist *cl = NULL; 00262 00263 if (argc != 4) 00264 return RESULT_SHOWUSAGE; 00265 00266 if (AST_LIST_LOCK(&channels)) { 00267 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00268 return RESULT_FAILURE; 00269 } 00270 00271 AST_LIST_TRAVERSE(&backends, cl, list) { 00272 if (!strncasecmp(cl->tech->type, argv[3], strlen(cl->tech->type))) { 00273 break; 00274 } 00275 } 00276 00277 00278 if (!cl) { 00279 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]); 00280 AST_LIST_UNLOCK(&channels); 00281 return RESULT_FAILURE; 00282 } 00283 00284 ast_cli(fd, 00285 "-- Info about channel driver: %s --\n" 00286 " Device State: %s\n" 00287 " Indication: %s\n" 00288 " Transfer : %s\n" 00289 " Capabilities: %d\n" 00290 " Digit Begin: %s\n" 00291 " Digit End: %s\n" 00292 " Send HTML : %s\n" 00293 " Image Support: %s\n" 00294 " Text Support: %s\n", 00295 cl->tech->type, 00296 (cl->tech->devicestate) ? "yes" : "no", 00297 (cl->tech->indicate) ? "yes" : "no", 00298 (cl->tech->transfer) ? "yes" : "no", 00299 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00300 (cl->tech->send_digit_begin) ? "yes" : "no", 00301 (cl->tech->send_digit_end) ? "yes" : "no", 00302 (cl->tech->send_html) ? "yes" : "no", 00303 (cl->tech->send_image) ? "yes" : "no", 00304 (cl->tech->send_text) ? "yes" : "no" 00305 00306 ); 00307 00308 AST_LIST_UNLOCK(&channels); 00309 return RESULT_SUCCESS; 00310 }
static int show_channeltype_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 206 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, 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.
00207 { 00208 struct chanlist *cl = NULL; 00209 00210 if (argc != 3) 00211 return RESULT_SHOWUSAGE; 00212 00213 if (AST_LIST_LOCK(&channels)) { 00214 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00215 return RESULT_FAILURE; 00216 } 00217 00218 AST_LIST_TRAVERSE(&backends, cl, list) { 00219 if (!strncasecmp(cl->tech->type, argv[2], strlen(cl->tech->type))) { 00220 break; 00221 } 00222 } 00223 00224 00225 if (!cl) { 00226 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[2]); 00227 AST_LIST_UNLOCK(&channels); 00228 return RESULT_FAILURE; 00229 } 00230 00231 ast_cli(fd, 00232 "-- Info about channel driver: %s --\n" 00233 " Device State: %s\n" 00234 " Indication: %s\n" 00235 " Transfer : %s\n" 00236 " Capabilities: %d\n" 00237 " Digit Begin: %s\n" 00238 " Digit End: %s\n" 00239 " Send HTML : %s\n" 00240 " Image Support: %s\n" 00241 " Text Support: %s\n", 00242 cl->tech->type, 00243 (cl->tech->devicestate) ? "yes" : "no", 00244 (cl->tech->indicate) ? "yes" : "no", 00245 (cl->tech->transfer) ? "yes" : "no", 00246 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00247 (cl->tech->send_digit_begin) ? "yes" : "no", 00248 (cl->tech->send_digit_end) ? "yes" : "no", 00249 (cl->tech->send_html) ? "yes" : "no", 00250 (cl->tech->send_image) ? "yes" : "no", 00251 (cl->tech->send_text) ? "yes" : "no" 00252 00253 ); 00254 00255 AST_LIST_UNLOCK(&channels); 00256 return RESULT_SUCCESS; 00257 }
static int show_channeltypes | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 179 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), 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.
00180 { 00181 #define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" 00182 struct chanlist *cl; 00183 int count_chan = 0; 00184 00185 ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer"); 00186 ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------"); 00187 if (AST_LIST_LOCK(&channels)) { 00188 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00189 return -1; 00190 } 00191 AST_LIST_TRAVERSE(&backends, cl, list) { 00192 ast_cli(fd, FORMAT, cl->tech->type, cl->tech->description, 00193 (cl->tech->devicestate) ? "yes" : "no", 00194 (cl->tech->indicate) ? "yes" : "no", 00195 (cl->tech->transfer) ? "yes" : "no"); 00196 count_chan++; 00197 } 00198 AST_LIST_UNLOCK(&channels); 00199 ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan); 00200 return RESULT_SUCCESS; 00201 00202 #undef FORMAT 00203 00204 }
static void* silence_generator_alloc | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static int silence_generator_generate | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4489 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04490 { 04491 short buf[samples]; 04492 struct ast_frame frame = { 04493 .frametype = AST_FRAME_VOICE, 04494 .subclass = AST_FORMAT_SLINEAR, 04495 .data = buf, 04496 .samples = samples, 04497 .datalen = sizeof(buf), 04498 }; 04499 memset(buf, 0, sizeof(buf)); 04500 if (ast_write(chan, &frame)) 04501 return -1; 04502 return 0; 04503 }
static void silence_generator_release | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static void* tonepair_alloc | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4242 of file channel.c.
References ast_calloc, AST_FLAG_WRITE_INT, AST_FORMAT_SLINEAR, ast_log(), ast_set_flag, ast_set_write_format(), tonepair_def::duration, tonepair_def::freq1, tonepair_def::freq2, LOG_WARNING, tonepair_release(), tonepair_def::vol, and ast_channel::writeformat.
04243 { 04244 struct tonepair_state *ts; 04245 struct tonepair_def *td = params; 04246 04247 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04248 return NULL; 04249 ts->origwfmt = chan->writeformat; 04250 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04251 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04252 tonepair_release(NULL, ts); 04253 ts = NULL; 04254 } else { 04255 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04256 ts->v1_1 = 0; 04257 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04258 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04259 ts->v2_1 = 0; 04260 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04261 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04262 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04263 ts->duration = td->duration; 04264 ts->modulate = 0; 04265 } 04266 /* Let interrupts interrupt :) */ 04267 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04268 return ts; 04269 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4271 of file channel.c.
References ast_log(), tonepair_state::data, tonepair_state::f, tonepair_state::fac1, tonepair_state::fac2, LOG_WARNING, tonepair_state::modulate, tonepair_state::v1_1, tonepair_state::v1_2, tonepair_state::v2_1, tonepair_state::v2_2, tonepair_state::v3_1, and tonepair_state::v3_2.
04272 { 04273 struct tonepair_state *ts = data; 04274 int x; 04275 04276 /* we need to prepare a frame with 16 * timelen samples as we're 04277 * generating SLIN audio 04278 */ 04279 len = samples * 2; 04280 04281 if (len > sizeof(ts->data) / 2 - 1) { 04282 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04283 return -1; 04284 } 04285 memset(&ts->f, 0, sizeof(ts->f)); 04286 for (x=0;x<len/2;x++) { 04287 ts->v1_1 = ts->v2_1; 04288 ts->v2_1 = ts->v3_1; 04289 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04290 04291 ts->v1_2 = ts->v2_2; 04292 ts->v2_2 = ts->v3_2; 04293 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04294 if (ts->modulate) { 04295 int p; 04296 p = ts->v3_2 - 32768; 04297 if (p < 0) p = -p; 04298 p = ((p * 9) / 10) + 1; 04299 ts->data[x] = (ts->v3_1 * p) >> 15; 04300 } else 04301 ts->data[x] = ts->v3_1 + ts->v3_2; 04302 } 04303 ts->f.frametype = AST_FRAME_VOICE; 04304 ts->f.subclass = AST_FORMAT_SLINEAR; 04305 ts->f.datalen = len; 04306 ts->f.samples = samples; 04307 ts->f.offset = AST_FRIENDLY_OFFSET; 04308 ts->f.data = ts->data; 04309 ast_write(chan, &ts->f); 04310 ts->pos += x; 04311 if (ts->duration > 0) { 04312 if (ts->pos >= ts->duration * 8) 04313 return -1; 04314 } 04315 return 0; 04316 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4233 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04234 { 04235 struct tonepair_state *ts = params; 04236 04237 if (chan) 04238 ast_set_write_format(chan, ts->origwfmt); 04239 free(ts); 04240 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4394 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_cleanup(), and ast_uninstall_music_functions().
int(*) ast_moh_start_ptr(struct ast_channel *, const char *, const char *) = NULL [static] |
Definition at line 4392 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_start(), and ast_uninstall_music_functions().
void(*) ast_moh_stop_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4393 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_stop(), and ast_uninstall_music_functions().
map AST_CAUSE's to readable string representations
Referenced by ast_cause2str(), ast_str2cause(), and dump_cause().
struct ast_cli_entry cli_channel[] [static] |
struct ast_cli_entry cli_show_channeltype_deprecated [static] |
Initial value:
{ { "show", "channeltype", NULL }, show_channeltype_deprecated, NULL, NULL, complete_channeltypes_deprecated }
struct ast_cli_entry cli_show_channeltypes_deprecated [static] |
Initial value:
{ { "show", "channeltypes", NULL }, show_channeltypes, NULL, NULL }
unsigned long global_fin |
unsigned long global_fout |
struct ast_channel_tech null_tech [static] |
Initial value:
{ .type = "NULL", .description = "Null channel (should not see this)", }
Definition at line 703 of file channel.c.
Referenced by ast_channel_alloc().
char show_channeltype_usage[] [static] |
char show_channeltypes_usage[] [static] |
int shutting_down [static] |
struct ast_generator silence_generator [static] |
Initial value:
{ .alloc = silence_generator_alloc, .release = silence_generator_release, .generate = silence_generator_generate, }
Definition at line 4505 of file channel.c.
Referenced by ast_channel_start_silence_generator().
struct ast_generator tonepair [static] |
Initial value:
{ alloc: tonepair_alloc, release: tonepair_release, generate: tonepair_generator, }
Definition at line 4318 of file channel.c.
Referenced by ast_tonepair_start().