#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <math.h>
#include "asterisk/pbx.h"
#include "asterisk/frame.h"
#include "asterisk/sched.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/chanspy.h"
#include "asterisk/musiconhold.h"
#include "asterisk/logger.h"
#include "asterisk/say.h"
#include "asterisk/file.h"
#include "asterisk/cli.h"
#include "asterisk/translate.h"
#include "asterisk/manager.h"
#include "asterisk/chanvars.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/monitor.h"
#include "asterisk/causes.h"
#include "asterisk/callerid.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/transcap.h"
#include "asterisk/devicestate.h"
#include "asterisk/sha1.h"
#include "asterisk/threadstorage.h"
#include "asterisk/slinfactory.h"
Include dependency graph for channel.c:
Go to the source code of this file.
Data Structures | |
struct | ast_cause |
struct | ast_channel_spy_list |
struct | ast_channel_whisper_buffer |
struct | ast_silence_generator |
struct | chanlist |
struct | channel_spy_trans |
struct | tonepair_def |
struct | tonepair_state |
Defines | |
#define | AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
#define | AST_MIN_DTMF_DURATION 80 |
#define | AST_MIN_DTMF_GAP 45 |
#define | FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define | MONITOR_CONSTANT_DELAY |
#define | MONITOR_DELAY 150 * 8 |
#define | SPY_QUEUE_SAMPLE_LIMIT 4000 |
#define | STATE2STR_BUFSIZE 32 |
Enumerations | |
enum | spy_direction { SPY_READ, SPY_WRITE } |
Functions | |
static struct ast_frame * | __ast_read (struct ast_channel *chan, int dropaudio) |
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_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. | |
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. | |
int | ast_channel_spy_add (struct ast_channel *chan, struct ast_channel_spy *spy) |
Adds a spy to a channel, to begin receiving copies of the channel's audio frames. | |
void | ast_channel_spy_free (struct ast_channel_spy *spy) |
Free a spy. | |
ast_frame * | ast_channel_spy_read_frame (struct ast_channel_spy *spy, unsigned int samples) |
Read one (or more) frames of audio from a channel being spied upon. | |
void | ast_channel_spy_remove (struct ast_channel *chan, struct ast_channel_spy *spy) |
Remove a spy from a channel. | |
void | ast_channel_spy_stop_by_type (struct ast_channel *chan, const char *type) |
Find all spies of a particular type on a channel and stop them. | |
void | ast_channel_spy_trigger_wait (struct ast_channel_spy *spy) |
Efficiently wait until audio is available for a spy, or an exception occurs. | |
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. | |
int | ast_channel_whisper_feed (struct ast_channel *chan, struct ast_frame *f) |
Feed an audio frame into the whisper buffer on a channel. | |
int | ast_channel_whisper_start (struct ast_channel *chan) |
Begin 'whispering' onto a channel. | |
void | ast_channel_whisper_stop (struct ast_channel *chan) |
Stop 'whispering' onto a channel. | |
void | ast_channels_init (void) |
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. | |
ast_frame * | ast_read_noaudio (struct ast_channel *chan) |
Reads a frame, returning AST_FRAME_NULL frame if audio. | |
int | ast_readstring (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders) |
int | ast_readstring_full (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders, int audiofd, int ctrlfd) |
int | ast_recvchar (struct ast_channel *chan, int timeout) |
Receives a text character from a channel. | |
char * | ast_recvtext (struct ast_channel *chan, int timeout) |
Receives a text string from a channel Read a string of text from a channel. | |
ast_channel * | ast_request (const char *type, int format, void *data, int *cause) |
Requests a channel. | |
ast_channel * | ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cidnum, const char *cidname) |
Request a channel of a given type, with data as optional information used by the low level module and attempt to place a call on it. | |
int | ast_safe_sleep (struct ast_channel *chan, int ms) |
Wait for a specied amount of time, looking for hangups. | |
int | ast_safe_sleep_conditional (struct ast_channel *chan, int ms, int(*cond)(void *), void *data) |
Wait for a specied amount of time, looking for hangups and a condition argument. | |
char * | ast_safe_string_alloc (const char *fmt,...) |
printf the string into a correctly sized mallocd buffer, and return the buffer | |
int | ast_say_character_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digit_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digits (struct ast_channel *chan, int num, const char *ints, const char *lang) |
int | ast_say_digits_full (struct ast_channel *chan, int num, const char *ints, const char *lang, int audiofd, int ctrlfd) |
int | ast_say_enumeration (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_number (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_phonetic_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_senddigit (struct ast_channel *chan, char digit) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_begin (struct ast_channel *chan, char digit) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_end (struct ast_channel *chan, char digit, unsigned int duration) |
Send a DTMF digit to a channel. | |
int | ast_sendtext (struct ast_channel *chan, const char *text) |
Sends text to a channel Write text to a display on a channel. | |
void | ast_set_callerid (struct ast_channel *chan, const char *callerid, const char *calleridname, const char *ani) |
int | ast_set_read_format (struct ast_channel *chan, int fmt) |
Sets read format on channel chan Set read format for channel to whichever component of "format" is best. | |
void | ast_set_variables (struct ast_channel *chan, struct ast_variable *vars) |
adds a list of channel variables to a channel | |
int | ast_set_write_format (struct ast_channel *chan, int fmt) |
Sets write format on channel chan Set write format for channel to whichever compoent of "format" is best. | |
int | ast_setstate (struct ast_channel *chan, enum ast_channel_state state) |
Change the state of a channel. | |
int | ast_settimeout (struct ast_channel *c, int samples, int(*func)(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 | copy_data_from_queue (struct ast_channel_spy_queue *queue, short *buf, unsigned int samples) |
static void | detach_spies (struct ast_channel *chan) |
static void | free_cid (struct ast_callerid *cid) |
static void | free_translation (struct ast_channel *clone) |
static int | generator_force (void *data) |
static void | queue_frame_to_spies (struct ast_channel *chan, struct ast_frame *f, enum spy_direction dir) |
static int | set_format (struct ast_channel *chan, int fmt, int *rawformat, int *format, struct ast_trans_pvt **trans, const int direction) |
static int | show_channeltype (int fd, int argc, char *argv[]) |
static int | show_channeltype_deprecated (int fd, int argc, char *argv[]) |
static int | show_channeltypes (int fd, int argc, char *argv[]) |
static void * | silence_generator_alloc (struct ast_channel *chan, void *data) |
static int | silence_generator_generate (struct ast_channel *chan, void *data, int len, int samples) |
static void | silence_generator_release (struct ast_channel *chan, void *data) |
static void | spy_cleanup (struct ast_channel *chan) |
static void | spy_detach (struct ast_channel_spy *spy, struct ast_channel *chan) |
static void * | tonepair_alloc (struct ast_channel *chan, void *params) |
static int | tonepair_generator (struct ast_channel *chan, void *data, int len, int samples) |
static void | tonepair_release (struct ast_channel *chan, void *params) |
Variables | |
static void(*) | ast_moh_cleanup_ptr (struct ast_channel *) = NULL |
static int(*) | ast_moh_start_ptr (struct ast_channel *, const char *, const char *) = NULL |
static void(*) | ast_moh_stop_ptr (struct ast_channel *) = NULL |
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 107 of file channel.c.
Referenced by __ast_read().
#define AST_MIN_DTMF_DURATION 80 |
Minimum allowed digit length - 80ms
Definition at line 110 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 114 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 SPY_QUEUE_SAMPLE_LIMIT 4000 |
#define STATE2STR_BUFSIZE 32 |
enum spy_direction |
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 2100 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::alertpipe, ast_cdr_alloc(), ast_cdr_answer(), ast_cdr_end(), ast_cdr_init(), ast_cdr_start(), ast_channel_lock, 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_CNG, 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_internal_timing_enabled(), 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_seekstream(), ast_set_flag, ast_setstate(), ast_settimeout(), AST_SOFTHANGUP_DEV, AST_STATE_UP, ast_strlen_zero(), ast_test_flag, AST_TIMING_FD, ast_translate(), ast_writestream(), ast_channel::blocker, ast_channel::cdr, 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, ast_channel_tech::exception, f, ast_channel::fdno, ast_channel::fds, ast_channel::fin, FRAMECOUNT_INC, ast_frame::frametype, func, ast_generator::generate, ast_channel::generator, generator_force(), ast_channel::generatordata, ast_channel::insmpl, LOG_DEBUG, LOG_DTMF, LOG_NOTICE, LOG_WARNING, ast_channel::masq, ast_channel::monitor, MONITOR_DELAY, ast_channel::nativeformats, option_debug, ast_channel::outsmpl, queue_frame_to_spies(), ast_channel_tech::read, ast_channel_monitor::read_stream, ast_channel::readtrans, SEEK_FORCECUR, ast_channel::spies, SPY_READ, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_read(), and ast_read_noaudio().
02101 { 02102 struct ast_frame *f = NULL; /* the return value */ 02103 int blah; 02104 int prestate; 02105 02106 /* this function is very long so make sure there is only one return 02107 * point at the end (there is only one exception to this). 02108 */ 02109 ast_channel_lock(chan); 02110 if (chan->masq) { 02111 if (ast_do_masquerade(chan)) 02112 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02113 else 02114 f = &ast_null_frame; 02115 goto done; 02116 } 02117 02118 /* Stop if we're a zombie or need a soft hangup */ 02119 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02120 if (chan->generator) 02121 ast_deactivate_generator(chan); 02122 goto done; 02123 } 02124 prestate = chan->_state; 02125 02126 if (!ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF | AST_FLAG_IN_DTMF) && 02127 !ast_strlen_zero(chan->dtmfq) && 02128 (ast_tvzero(chan->dtmf_tv) || ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) > AST_MIN_DTMF_GAP) ) { 02129 /* We have DTMF that has been deferred. Return it now */ 02130 chan->dtmff.subclass = chan->dtmfq[0]; 02131 /* Drop first digit from the buffer */ 02132 memmove(chan->dtmfq, chan->dtmfq + 1, sizeof(chan->dtmfq) - 1); 02133 f = &chan->dtmff; 02134 if (ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) 02135 chan->dtmff.frametype = AST_FRAME_DTMF_END; 02136 else { 02137 chan->dtmff.frametype = AST_FRAME_DTMF_BEGIN; 02138 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02139 chan->emulate_dtmf_digit = f->subclass; 02140 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02141 } 02142 chan->dtmf_tv = ast_tvnow(); 02143 goto done; 02144 } 02145 02146 /* Read and ignore anything on the alertpipe, but read only 02147 one sizeof(blah) per frame that we send from it */ 02148 if (chan->alertpipe[0] > -1) 02149 read(chan->alertpipe[0], &blah, sizeof(blah)); 02150 02151 #ifdef HAVE_ZAPTEL 02152 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02153 int res; 02154 02155 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02156 blah = -1; 02157 /* IF we can't get event, assume it's an expired as-per the old interface */ 02158 res = ioctl(chan->timingfd, ZT_GETEVENT, &blah); 02159 if (res) 02160 blah = ZT_EVENT_TIMER_EXPIRED; 02161 02162 if (blah == ZT_EVENT_TIMER_PING) { 02163 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02164 /* Acknowledge PONG unless we need it again */ 02165 if (ioctl(chan->timingfd, ZT_TIMERPONG, &blah)) { 02166 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02167 } 02168 } 02169 } else if (blah == ZT_EVENT_TIMER_EXPIRED) { 02170 ioctl(chan->timingfd, ZT_TIMERACK, &blah); 02171 if (chan->timingfunc) { 02172 /* save a copy of func/data before unlocking the channel */ 02173 int (*func)(void *) = chan->timingfunc; 02174 void *data = chan->timingdata; 02175 ast_channel_unlock(chan); 02176 func(data); 02177 } else { 02178 blah = 0; 02179 ioctl(chan->timingfd, ZT_TIMERCONFIG, &blah); 02180 chan->timingdata = NULL; 02181 ast_channel_unlock(chan); 02182 } 02183 /* cannot 'goto done' because the channel is already unlocked */ 02184 return &ast_null_frame; 02185 } else 02186 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02187 } else 02188 #endif 02189 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02190 /* if the AST_GENERATOR_FD is set, call the generator with args 02191 * set to -1 so it can do whatever it needs to. 02192 */ 02193 void *tmp = chan->generatordata; 02194 chan->generatordata = NULL; /* reset to let ast_write get through */ 02195 chan->generator->generate(chan, tmp, -1, -1); 02196 chan->generatordata = tmp; 02197 f = &ast_null_frame; 02198 goto done; 02199 } 02200 02201 /* Check for pending read queue */ 02202 if (!AST_LIST_EMPTY(&chan->readq)) { 02203 f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list); 02204 /* Interpret hangup and return NULL */ 02205 /* XXX why not the same for frames from the channel ? */ 02206 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) { 02207 ast_frfree(f); 02208 f = NULL; 02209 } 02210 } else { 02211 chan->blocker = pthread_self(); 02212 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02213 if (chan->tech->exception) 02214 f = chan->tech->exception(chan); 02215 else { 02216 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02217 f = &ast_null_frame; 02218 } 02219 /* Clear the exception flag */ 02220 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02221 } else if (chan->tech->read) 02222 f = chan->tech->read(chan); 02223 else 02224 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02225 } 02226 02227 if (f) { 02228 /* if the channel driver returned more than one frame, stuff the excess 02229 into the readq for the next ast_read call (note that we can safely assume 02230 that the readq is empty, because otherwise we would not have called into 02231 the channel driver and f would be only a single frame) 02232 */ 02233 if (AST_LIST_NEXT(f, frame_list)) { 02234 AST_LIST_HEAD_SET_NOLOCK(&chan->readq, AST_LIST_NEXT(f, frame_list)); 02235 AST_LIST_NEXT(f, frame_list) = NULL; 02236 } 02237 02238 switch (f->frametype) { 02239 case AST_FRAME_CONTROL: 02240 if (f->subclass == AST_CONTROL_ANSWER) { 02241 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02242 if (option_debug) 02243 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02244 ast_frfree(f); 02245 f = &ast_null_frame; 02246 } else if (prestate == AST_STATE_UP) { 02247 if (option_debug) 02248 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02249 ast_frfree(f); 02250 f = &ast_null_frame; 02251 } else { 02252 /* Answer the CDR */ 02253 ast_setstate(chan, AST_STATE_UP); 02254 if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore, 02255 to keep from throwing off the basic order of the universe, 02256 we will try to keep this cdr from getting posted. */ 02257 chan->cdr = ast_cdr_alloc(); 02258 ast_cdr_init(chan->cdr, chan); 02259 ast_cdr_start(chan->cdr); 02260 } 02261 02262 ast_cdr_answer(chan->cdr); 02263 } 02264 } 02265 break; 02266 case AST_FRAME_DTMF_END: 02267 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02268 /* Queue it up if DTMF is deffered, or if DTMF emulation is forced. 02269 * However, only let emulation be forced if the other end cares about BEGIN frames */ 02270 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || 02271 (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) ) { 02272 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) 02273 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02274 else 02275 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02276 ast_frfree(f); 02277 f = &ast_null_frame; 02278 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02279 if (!ast_tvzero(chan->dtmf_tv) && 02280 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02281 /* If it hasn't been long enough, defer this digit */ 02282 if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) 02283 chan->dtmfq[strlen(chan->dtmfq)] = f->subclass; 02284 else 02285 ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name); 02286 ast_frfree(f); 02287 f = &ast_null_frame; 02288 } else { 02289 /* There was no begin, turn this into a begin and send the end later */ 02290 f->frametype = AST_FRAME_DTMF_BEGIN; 02291 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02292 chan->emulate_dtmf_digit = f->subclass; 02293 chan->dtmf_tv = ast_tvnow(); 02294 if (f->len) { 02295 if (f->len > AST_MIN_DTMF_DURATION) 02296 chan->emulate_dtmf_duration = f->len; 02297 else 02298 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02299 } else 02300 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02301 } 02302 } else { 02303 struct timeval now = ast_tvnow(); 02304 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02305 if (!f->len) 02306 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02307 if (f->len < AST_MIN_DTMF_DURATION) { 02308 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02309 chan->emulate_dtmf_digit = f->subclass; 02310 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02311 f = &ast_null_frame; 02312 } else 02313 chan->dtmf_tv = now; 02314 } 02315 break; 02316 case AST_FRAME_DTMF_BEGIN: 02317 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02318 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY) || 02319 (!ast_tvzero(chan->dtmf_tv) && 02320 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02321 ast_frfree(f); 02322 f = &ast_null_frame; 02323 } else { 02324 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02325 chan->dtmf_tv = ast_tvnow(); 02326 } 02327 break; 02328 case AST_FRAME_NULL: 02329 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02330 struct timeval now = ast_tvnow(); 02331 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02332 chan->emulate_dtmf_duration = 0; 02333 ast_frfree(f); 02334 f = &chan->dtmff; 02335 f->frametype = AST_FRAME_DTMF_END; 02336 f->subclass = chan->emulate_dtmf_digit; 02337 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02338 chan->dtmf_tv = now; 02339 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02340 chan->emulate_dtmf_digit = 0; 02341 } 02342 } 02343 break; 02344 case AST_FRAME_VOICE: 02345 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02346 * is reached , because we want to make sure we pass at least one 02347 * voice frame through before starting the next digit, to ensure a gap 02348 * between DTMF digits. */ 02349 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02350 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02351 chan->emulate_dtmf_digit = 0; 02352 } 02353 02354 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02355 ast_frfree(f); 02356 f = &ast_null_frame; 02357 } else if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02358 struct timeval now = ast_tvnow(); 02359 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02360 chan->emulate_dtmf_duration = 0; 02361 ast_frfree(f); 02362 f = &chan->dtmff; 02363 f->frametype = AST_FRAME_DTMF_END; 02364 f->subclass = chan->emulate_dtmf_digit; 02365 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02366 chan->dtmf_tv = now; 02367 } else { 02368 /* Drop voice frames while we're still in the middle of the digit */ 02369 ast_frfree(f); 02370 f = &ast_null_frame; 02371 } 02372 } else if (!(f->subclass & chan->nativeformats)) { 02373 /* This frame can't be from the current native formats -- drop it on the 02374 floor */ 02375 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02376 chan->name, ast_getformatname(f->subclass), ast_getformatname(chan->nativeformats)); 02377 ast_frame_dump(chan->name, f, "<<"); 02378 ast_frfree(f); 02379 f = &ast_null_frame; 02380 } else { 02381 if (chan->spies) 02382 queue_frame_to_spies(chan, f, SPY_READ); 02383 02384 if (chan->monitor && chan->monitor->read_stream ) { 02385 /* XXX what does this do ? */ 02386 #ifndef MONITOR_CONSTANT_DELAY 02387 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02388 if (jump >= 0) { 02389 jump = chan->outsmpl - chan->insmpl; 02390 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02391 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02392 chan->insmpl += jump + f->samples; 02393 } else 02394 chan->insmpl+= f->samples; 02395 #else 02396 int jump = chan->outsmpl - chan->insmpl; 02397 if (jump - MONITOR_DELAY >= 0) { 02398 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02399 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02400 chan->insmpl += jump; 02401 } else 02402 chan->insmpl += f->samples; 02403 #endif 02404 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02405 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02406 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02407 } 02408 } 02409 02410 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) 02411 f = &ast_null_frame; 02412 02413 /* Run generator sitting on the line if timing device not available 02414 * and synchronous generation of outgoing frames is necessary */ 02415 if (chan->generatordata && !ast_internal_timing_enabled(chan)) { 02416 void *tmp = chan->generatordata; 02417 int res; 02418 02419 if (chan->timingfunc) { 02420 if (option_debug > 1) 02421 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 02422 ast_settimeout(chan, 0, NULL, NULL); 02423 } 02424 02425 chan->generatordata = NULL; /* reset, to let writes go through */ 02426 res = chan->generator->generate(chan, tmp, f->datalen, f->samples); 02427 chan->generatordata = tmp; 02428 if (res) { 02429 if (option_debug > 1) 02430 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 02431 ast_deactivate_generator(chan); 02432 } 02433 02434 } else if (f->frametype == AST_FRAME_CNG) { 02435 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 02436 if (option_debug > 1) 02437 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 02438 ast_settimeout(chan, 160, generator_force, chan); 02439 } 02440 } 02441 } 02442 default: 02443 /* Just pass it on! */ 02444 break; 02445 } 02446 } else { 02447 /* Make sure we always return NULL in the future */ 02448 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02449 if (chan->generator) 02450 ast_deactivate_generator(chan); 02451 /* End the CDR if appropriate */ 02452 if (chan->cdr) 02453 ast_cdr_end(chan->cdr); 02454 } 02455 02456 /* High bit prints debugging */ 02457 if (chan->fin & DEBUGCHAN_FLAG) 02458 ast_frame_dump(chan->name, f, "<<"); 02459 chan->fin = FRAMECOUNT_INC(chan->fin); 02460 02461 done: 02462 ast_channel_unlock(chan); 02463 return f; 02464 }
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 2961 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, ast_cdr_alloc(), ast_cdr_disposition(), ast_cdr_end(), ast_cdr_failed(), ast_cdr_init(), ast_cdr_setaccount(), ast_cdr_setapp(), ast_cdr_start(), ast_cdr_update(), ast_channel_inherit_variables(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FRAME_CONTROL, ast_frfree(), ast_hangup(), ast_log(), ast_read(), ast_request(), 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().
02962 { 02963 int dummy_outstate; 02964 int cause = 0; 02965 struct ast_channel *chan; 02966 int res = 0; 02967 02968 if (outstate) 02969 *outstate = 0; 02970 else 02971 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 02972 02973 chan = ast_request(type, format, data, &cause); 02974 if (!chan) { 02975 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 02976 /* compute error and return */ 02977 if (cause == AST_CAUSE_BUSY) 02978 *outstate = AST_CONTROL_BUSY; 02979 else if (cause == AST_CAUSE_CONGESTION) 02980 *outstate = AST_CONTROL_CONGESTION; 02981 return NULL; 02982 } 02983 02984 if (oh) { 02985 if (oh->vars) 02986 ast_set_variables(chan, oh->vars); 02987 /* XXX why is this necessary, for the parent_channel perhaps ? */ 02988 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 02989 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 02990 if (oh->parent_channel) 02991 ast_channel_inherit_variables(oh->parent_channel, chan); 02992 if (oh->account) 02993 ast_cdr_setaccount(chan, oh->account); 02994 } 02995 ast_set_callerid(chan, cid_num, cid_name, cid_num); 02996 02997 02998 02999 if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore, 03000 to keep from throwing off the basic order of the universe, 03001 we will try to keep this cdr from getting posted. */ 03002 chan->cdr = ast_cdr_alloc(); 03003 ast_cdr_init(chan->cdr, chan); 03004 ast_cdr_start(chan->cdr); 03005 } 03006 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 03007 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 03008 } else { 03009 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 03010 while (timeout && chan->_state != AST_STATE_UP) { 03011 struct ast_frame *f; 03012 res = ast_waitfor(chan, timeout); 03013 if (res <= 0) /* error, timeout, or done */ 03014 break; 03015 if (timeout > -1) 03016 timeout = res; 03017 f = ast_read(chan); 03018 if (!f) { 03019 *outstate = AST_CONTROL_HANGUP; 03020 res = 0; 03021 break; 03022 } 03023 if (f->frametype == AST_FRAME_CONTROL) { 03024 switch (f->subclass) { 03025 case AST_CONTROL_RINGING: /* record but keep going */ 03026 *outstate = f->subclass; 03027 break; 03028 03029 case AST_CONTROL_BUSY: 03030 case AST_CONTROL_CONGESTION: 03031 case AST_CONTROL_ANSWER: 03032 *outstate = f->subclass; 03033 timeout = 0; /* trick to force exit from the while() */ 03034 break; 03035 03036 /* Ignore these */ 03037 case AST_CONTROL_PROGRESS: 03038 case AST_CONTROL_PROCEEDING: 03039 case AST_CONTROL_HOLD: 03040 case AST_CONTROL_UNHOLD: 03041 case AST_CONTROL_VIDUPDATE: 03042 case -1: /* Ignore -- just stopping indications */ 03043 break; 03044 03045 default: 03046 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 03047 } 03048 } 03049 ast_frfree(f); 03050 } 03051 } 03052 03053 /* Final fixups */ 03054 if (oh) { 03055 if (!ast_strlen_zero(oh->context)) 03056 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 03057 if (!ast_strlen_zero(oh->exten)) 03058 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 03059 if (oh->priority) 03060 chan->priority = oh->priority; 03061 } 03062 if (chan->_state == AST_STATE_UP) 03063 *outstate = AST_CONTROL_ANSWER; 03064 03065 if (res <= 0) { 03066 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 03067 ast_cdr_init(chan->cdr, chan); 03068 if (chan->cdr) { 03069 char tmp[256]; 03070 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 03071 ast_cdr_setapp(chan->cdr,"Dial",tmp); 03072 ast_cdr_update(chan); 03073 ast_cdr_start(chan->cdr); 03074 ast_cdr_end(chan->cdr); 03075 /* If the cause wasn't handled properly */ 03076 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 03077 ast_cdr_failed(chan->cdr); 03078 } 03079 ast_hangup(chan); 03080 chan = NULL; 03081 } 03082 return chan; 03083 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1817 of file channel.c.
References ast_generator::alloc, ast_channel_lock, ast_channel_unlock, ast_prod(), ast_settimeout(), gen, ast_channel::generator, generator_force(), ast_channel::generatordata, and ast_generator::release.
Referenced by app_exec(), ast_channel_start_silence_generator(), ast_linear_stream(), ast_playtones_start(), ast_tonepair_start(), channel_spy(), local_ast_moh_start(), and milliwatt_exec().
01818 { 01819 int res = 0; 01820 01821 ast_channel_lock(chan); 01822 01823 if (chan->generatordata) { 01824 if (chan->generator && chan->generator->release) 01825 chan->generator->release(chan, chan->generatordata); 01826 chan->generatordata = NULL; 01827 } 01828 01829 ast_prod(chan); 01830 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01831 res = -1; 01832 } 01833 01834 if (!res) { 01835 ast_settimeout(chan, 160, generator_force, chan); 01836 chan->generator = gen; 01837 } 01838 01839 ast_channel_unlock(chan); 01840 01841 return res; 01842 }
int ast_active_channels | ( | void | ) |
returns number of active/allocated channels
Returns number of active/allocated channels
Definition at line 454 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, and AST_LIST_UNLOCK.
Referenced by quit_handler().
00455 { 00456 struct ast_channel *c; 00457 int cnt = 0; 00458 AST_LIST_LOCK(&channels); 00459 AST_LIST_TRAVERSE(&channels, c, chan_list) 00460 cnt++; 00461 AST_LIST_UNLOCK(&channels); 00462 return cnt; 00463 }
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 1750 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, and ast_channel::tech.
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(), features_answer(), handle_answer(), ices_exec(), milliwatt_exec(), mwanalyze_exec(), nv_background_detect_exec(), nv_detectfax_exec(), park_call_exec(), park_exec(), pbx_builtin_answer(), pbx_builtin_background(), pickup_do(), playback_exec(), privacy_exec(), read_exec(), rpt_exec(), run_station(), rxfax_exec(), sayunixtime_exec(), send_waveform_to_channel(), skel_exec(), sla_handle_dial_state_event(), sla_station_exec(), speech_background(), testclient_exec(), testserver_exec(), txfax_exec(), vm_exec(), vm_execmain(), waitforsilence_exec(), zapateller_exec(), and zapras_exec().
01751 { 01752 int res = 0; 01753 ast_channel_lock(chan); 01754 /* You can't answer an outbound call */ 01755 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01756 ast_channel_unlock(chan); 01757 return 0; 01758 } 01759 /* Stop if we're a zombie or need a soft hangup */ 01760 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01761 ast_channel_unlock(chan); 01762 return -1; 01763 } 01764 switch(chan->_state) { 01765 case AST_STATE_RINGING: 01766 case AST_STATE_RING: 01767 if (chan->tech->answer) 01768 res = chan->tech->answer(chan); 01769 ast_setstate(chan, AST_STATE_UP); 01770 ast_cdr_answer(chan->cdr); 01771 break; 01772 case AST_STATE_UP: 01773 ast_cdr_answer(chan->cdr); 01774 break; 01775 default: 01776 break; 01777 } 01778 ast_channel_unlock(chan); 01779 return res; 01780 }
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 441 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_softhangup(), AST_SOFTHANGUP_SHUTDOWN, and shutting_down.
Referenced by quit_handler().
00442 { 00443 struct ast_channel *c; 00444 shutting_down = 1; 00445 if (hangup) { 00446 AST_LIST_LOCK(&channels); 00447 AST_LIST_TRAVERSE(&channels, c, chan_list) 00448 ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN); 00449 AST_LIST_UNLOCK(&channels); 00450 } 00451 }
int ast_best_codec | ( | int | fmts | ) |
Pick the best audio codec.
Pick the best codec
G.722 is better then all codecs in this list
alaw used by all telephone equipment at Russia
Okay, well, signed linear is easy to translate into other stuff! slinear<->alaw recoding very fast
ulaw standart for USA and Japan
Speex is free, but computationally more expensive than GSM
G.726 is standard ADPCM, in RFC3551 packing order
G.726 is standard ADPCM, in AAL2 packing order
ADPCM has great sound quality and is still pretty easy to translate
Okay, we're down to vocoders now, so pick GSM because it's small and easier to translate and sounds pretty good
iLBC is not too bad
G.729a is faster than 723 and slightly less expensive
Down to G.723.1 which is proprietary but at least designed for voice
Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough to use it
Definition at line 666 of file channel.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_AUDIO_MASK, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_log(), LOG_WARNING, and prefs.
Referenced by __login_exec(), __oh323_new(), agent_call(), ast_channel_best_codec(), ast_codec_choose(), ast_iax2_new(), builtin_atxfer(), echo_exec(), findmeexec(), gtalk_new(), handle_open_receive_channel_ack_message(), iax2_request(), local_new(), mgcp_new(), sip_new(), skinny_new(), socket_process(), and transmit_connect().
00667 { 00668 /* This just our opinion, expressed in code. We are asked to choose 00669 the best codec to use, given no information */ 00670 int x; 00671 static int prefs[] = 00672 { 00673 /*! G.722 is better then all codecs in this list */ 00674 AST_FORMAT_G722, 00675 /*! alaw used by all telephone equipment at Russia */ 00676 AST_FORMAT_ALAW, 00677 /*! Okay, well, signed linear is easy to translate into other stuff! slinear<->alaw recoding very fast */ 00678 AST_FORMAT_SLINEAR, 00679 /*! ulaw standart for USA and Japan */ 00680 AST_FORMAT_ULAW, 00681 /*! Speex is free, but computationally more expensive than GSM */ 00682 AST_FORMAT_SPEEX, 00683 /*! G.726 is standard ADPCM, in RFC3551 packing order */ 00684 AST_FORMAT_G726, 00685 /*! G.726 is standard ADPCM, in AAL2 packing order */ 00686 AST_FORMAT_G726_AAL2, 00687 /*! ADPCM has great sound quality and is still pretty easy to translate */ 00688 AST_FORMAT_ADPCM, 00689 /*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to 00690 translate and sounds pretty good */ 00691 AST_FORMAT_GSM, 00692 /*! iLBC is not too bad */ 00693 AST_FORMAT_ILBC, 00694 /*! G.729a is faster than 723 and slightly less expensive */ 00695 AST_FORMAT_G729A, 00696 /*! Down to G.723.1 which is proprietary but at least designed for voice */ 00697 AST_FORMAT_G723_1, 00698 /*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough 00699 to use it */ 00700 AST_FORMAT_LPC10, 00701 }; 00702 00703 /* Strip out video */ 00704 fmts &= AST_FORMAT_AUDIO_MASK; 00705 00706 /* Find the first preferred codec in the format given */ 00707 for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++) 00708 if (fmts & prefs[x]) 00709 return prefs[x]; 00710 ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts); 00711 return 0; 00712 }
struct ast_channel* ast_bridged_channel | ( | struct ast_channel * | chan | ) |
Find bridged channel.
chan | Current channel |
Definition at line 3782 of file channel.c.
References ast_channel::_bridge, ast_channel_tech::bridged_channel, and ast_channel::tech.
Referenced by __zt_exception(), agents_show(), agents_show_online(), ast_channel_masquerade(), attempt_transfer(), check_bridge(), common_exec(), console_transfer(), console_transfer_deprecated(), create_jb(), export_aoc_vars(), handle_chanlist(), handle_chanlist_deprecated(), handle_hd_hf(), handle_invite_replaces(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response_invite(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_hangup(), mgcp_ss(), misdn_transfer_bc(), mixmonitor_thread(), schedule_delivery(), sip_read(), socket_process(), ss_thread(), start_spying(), startmon(), zt_handle_event(), and zt_hangup().
03783 { 03784 struct ast_channel *bridged; 03785 bridged = chan->_bridge; 03786 if (bridged && bridged->tech->bridged_channel) 03787 bridged = bridged->tech->bridged_channel(chan, bridged); 03788 return bridged; 03789 }
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 3139 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, ast_set_flag, ast_test_flag, ast_channel_tech::call, and ast_channel::tech.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), attempt_reconnect(), begin_dial(), features_call(), findmeexec(), function_ilink(), ring_entry(), rpt(), rpt_exec(), and wait_for_answer().
03140 { 03141 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03142 If the remote end does not answer within the timeout, then do NOT hang up, but 03143 return anyway. */ 03144 int res = -1; 03145 /* Stop if we're a zombie or need a soft hangup */ 03146 ast_channel_lock(chan); 03147 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03148 if (chan->tech->call) 03149 res = chan->tech->call(chan, addr, timeout); 03150 ast_set_flag(chan, AST_FLAG_OUTGOING); 03151 } 03152 ast_channel_unlock(chan); 03153 return res; 03154 }
void ast_cancel_shutdown | ( | void | ) |
Cancel a shutdown in progress.
Cancels an existing shutdown and returns to normal operation
Definition at line 466 of file channel.c.
References shutting_down.
Referenced by handle_abort_halt().
00467 { 00468 shutting_down = 0; 00469 }
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 586 of file channel.c.
Referenced by __transmit_response(), ast_hangup(), findmeexec(), and transmit_request_with_auth().
00587 { 00588 int x; 00589 00590 for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) { 00591 if (causes[x].cause == cause) 00592 return causes[x].desc; 00593 } 00594 00595 return "Unknown"; 00596 }
void ast_change_name | ( | struct ast_channel * | chan, | |
char * | newname | |||
) |
Change channel name.
Definition at line 3366 of file channel.c.
References ast_string_field_set, EVENT_FLAG_CALL, manager_event(), and name.
03367 { 03368 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 03369 ast_string_field_set(chan, name, newname); 03370 }
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 720 of file channel.c.
References ast_calloc, ast_log(), AST_MAX_FDS, ast_string_field_init, ast_channel::flags, free, HAVE_ZAPTEL, LOG_WARNING, sched_context_create(), and shutting_down.
Referenced by __oh323_new(), agent_new(), alsa_new(), ast_async_goto(), ast_iax2_new(), ast_masq_park_call(), ast_pbx_outgoing_cdr_failed(), ast_pbx_outgoing_exten(), builtin_atxfer(), check_goto_on_transfer(), features_new(), gtalk_new(), iax_park(), local_new(), make_email_file(), mgcp_new(), misdn_new(), nbs_new(), oss_new(), pbx_substitute_variables_helper_full(), phone_new(), sendpage(), sip_new(), sip_park(), skinny_new(), and zt_new().
00721 { 00722 struct ast_channel *tmp; 00723 int x; 00724 int flags; 00725 struct varshead *headp; 00726 va_list ap1, ap2; 00727 00728 /* If shutting down, don't allocate any new channels */ 00729 if (shutting_down) { 00730 ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n"); 00731 return NULL; 00732 } 00733 00734 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) 00735 return NULL; 00736 00737 if (!(tmp->sched = sched_context_create())) { 00738 ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n"); 00739 free(tmp); 00740 return NULL; 00741 } 00742 00743 ast_string_field_init(tmp, 128); 00744 00745 /* Don't bother initializing the last two FD here, because they 00746 will *always* be set just a few lines down (AST_TIMING_FD, 00747 AST_ALERT_FD). */ 00748 for (x = 0; x < AST_MAX_FDS - 2; x++) 00749 tmp->fds[x] = -1; 00750 00751 #ifdef HAVE_ZAPTEL 00752 tmp->timingfd = open("/dev/zap/timer", O_RDWR); 00753 if (tmp->timingfd > -1) { 00754 /* Check if timing interface supports new 00755 ping/pong scheme */ 00756 flags = 1; 00757 if (!ioctl(tmp->timingfd, ZT_TIMERPONG, &flags)) 00758 needqueue = 0; 00759 } 00760 #else 00761 tmp->timingfd = -1; 00762 #endif 00763 00764 if (needqueue) { 00765 if (pipe(tmp->alertpipe)) { 00766 ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe!\n"); 00767 ast_string_field_free_pools(tmp); 00768 free(tmp); 00769 return NULL; 00770 } else { 00771 flags = fcntl(tmp->alertpipe[0], F_GETFL); 00772 fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK); 00773 flags = fcntl(tmp->alertpipe[1], F_GETFL); 00774 fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK); 00775 } 00776 } else /* Make sure we've got it done right if they don't */ 00777 tmp->alertpipe[0] = tmp->alertpipe[1] = -1; 00778 00779 /* Always watch the alertpipe */ 00780 tmp->fds[AST_ALERT_FD] = tmp->alertpipe[0]; 00781 /* And timing pipe */ 00782 tmp->fds[AST_TIMING_FD] = tmp->timingfd; 00783 ast_string_field_set(tmp, name, "**Unknown**"); 00784 00785 /* Initial state */ 00786 tmp->_state = state; 00787 00788 tmp->streamid = -1; 00789 00790 tmp->fin = global_fin; 00791 tmp->fout = global_fout; 00792 00793 if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) { 00794 ast_string_field_build(tmp, uniqueid, "%li.%d", (long) time(NULL), 00795 ast_atomic_fetchadd_int(&uniqueint, 1)); 00796 } else { 00797 ast_string_field_build(tmp, uniqueid, "%s-%li.%d", ast_config_AST_SYSTEM_NAME, 00798 (long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00799 } 00800 00801 tmp->cid.cid_name = ast_strdup(cid_name); 00802 tmp->cid.cid_num = ast_strdup(cid_num); 00803 00804 if (!ast_strlen_zero(name_fmt)) { 00805 /* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call. 00806 * And they all use slightly different formats for their name string. 00807 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here. 00808 * This means, that the stringfields must have a routine that takes the va_lists directly, and 00809 * uses them to build the string, instead of forming the va_lists internally from the vararg ... list. 00810 * This new function was written so this can be accomplished. 00811 */ 00812 va_start(ap1, name_fmt); 00813 va_start(ap2, name_fmt); 00814 ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2); 00815 va_end(ap1); 00816 va_end(ap2); 00817 00818 /* and now, since the channel structure is built, and has its name, let's call the 00819 * manager event generator with this Newchannel event. This is the proper and correct 00820 * place to make this call, but you sure do have to pass a lot of data into this func 00821 * to do it here! 00822 */ 00823 manager_event(EVENT_FLAG_CALL, "Newchannel", 00824 "Channel: %s\r\n" 00825 "State: %s\r\n" 00826 "CallerIDNum: %s\r\n" 00827 "CallerIDName: %s\r\n" 00828 "Uniqueid: %s\r\n", 00829 tmp->name, ast_state2str(state), 00830 S_OR(cid_num, "<unknown>"), 00831 S_OR(cid_name, "<unknown>"), 00832 tmp->uniqueid); 00833 } 00834 00835 /* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */ 00836 00837 /* These 4 variables need to be set up for the cdr_init() to work right */ 00838 if (amaflag) 00839 tmp->amaflags = amaflag; 00840 else 00841 tmp->amaflags = ast_default_amaflags; 00842 00843 if (!ast_strlen_zero(acctcode)) 00844 ast_string_field_set(tmp, accountcode, acctcode); 00845 else 00846 ast_string_field_set(tmp, accountcode, ast_default_accountcode); 00847 00848 if (!ast_strlen_zero(context)) 00849 ast_copy_string(tmp->context, context, sizeof(tmp->context)); 00850 else 00851 strcpy(tmp->context, "default"); 00852 00853 if (!ast_strlen_zero(exten)) 00854 ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); 00855 else 00856 strcpy(tmp->exten, "s"); 00857 00858 tmp->priority = 1; 00859 00860 tmp->cdr = ast_cdr_alloc(); 00861 ast_cdr_init(tmp->cdr, tmp); 00862 ast_cdr_start(tmp->cdr); 00863 00864 headp = &tmp->varshead; 00865 AST_LIST_HEAD_INIT_NOLOCK(headp); 00866 00867 ast_mutex_init(&tmp->lock); 00868 00869 AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores); 00870 00871 ast_string_field_set(tmp, language, defaultlanguage); 00872 00873 tmp->tech = &null_tech; 00874 00875 AST_LIST_LOCK(&channels); 00876 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00877 AST_LIST_UNLOCK(&channels); 00878 00879 return tmp; 00880 }
enum ast_bridge_result ast_channel_bridge | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1, | |||
struct ast_bridge_config * | config, | |||
struct ast_frame ** | fo, | |||
struct ast_channel ** | rc | |||
) |
Bridge two channels together.
Bridge two channels together
c0 | first channel to bridge | |
c1 | second channel to bridge | |
config | config for the channels | |
fo | destination frame(?) | |
rc | destination channel(?) Bridge two channels (c0 and c1) together. If an important frame occurs, we return that frame in rf (remember, it could be NULL) and which channel (0 or 1) in rc |
Definition at line 3971 of file channel.c.
References ast_channel::_bridge, ast_channel::_softhangup, AST_BRIDGE_COMPLETE, AST_BRIDGE_FAILED, AST_BRIDGE_FAILED_NOWARN, AST_BRIDGE_RETRY, ast_channel_make_compatible(), ast_check_hangup(), ast_check_hangup_locked(), ast_clear_flag, AST_FEATURE_PLAY_WARNING, AST_FEATURE_REDIRECT, AST_FLAG_END_DTMF_ONLY, AST_FLAG_NBRIDGE, AST_FLAG_ZOMBIE, ast_generic_bridge(), ast_log(), ast_set_flag, AST_SOFTHANGUP_UNBRIDGE, ast_test_flag, ast_tvadd(), ast_tvsub(), ast_verbose(), 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::monitor, ast_channel::nativeformats, option_verbose, ast_channel::readformat, ast_channel_tech::send_digit_begin, ast_channel::spies, t, ast_channel::tech, VERBOSE_PREFIX_3, and ast_channel::writeformat.
Referenced by ast_bridge_call().
03973 { 03974 struct ast_channel *who = NULL; 03975 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03976 int nativefailed=0; 03977 int firstpass; 03978 int o0nativeformats; 03979 int o1nativeformats; 03980 long time_left_ms=0; 03981 struct timeval nexteventts = { 0, }; 03982 char caller_warning = 0; 03983 char callee_warning = 0; 03984 03985 if (c0->_bridge) { 03986 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 03987 c0->name, c0->_bridge->name); 03988 return -1; 03989 } 03990 if (c1->_bridge) { 03991 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 03992 c1->name, c1->_bridge->name); 03993 return -1; 03994 } 03995 03996 /* Stop if we're a zombie or need a soft hangup */ 03997 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 03998 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 03999 return -1; 04000 04001 *fo = NULL; 04002 firstpass = config->firstpass; 04003 config->firstpass = 0; 04004 04005 if (ast_tvzero(config->start_time)) 04006 config->start_time = ast_tvnow(); 04007 time_left_ms = config->timelimit; 04008 04009 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 04010 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 04011 04012 if (config->start_sound && firstpass) { 04013 if (caller_warning) 04014 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 04015 if (callee_warning) 04016 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 04017 } 04018 04019 /* Keep track of bridge */ 04020 c0->_bridge = c1; 04021 c1->_bridge = c0; 04022 04023 /* \todo XXX here should check that cid_num is not NULL */ 04024 manager_event(EVENT_FLAG_CALL, "Link", 04025 "Channel1: %s\r\n" 04026 "Channel2: %s\r\n" 04027 "Uniqueid1: %s\r\n" 04028 "Uniqueid2: %s\r\n" 04029 "CallerID1: %s\r\n" 04030 "CallerID2: %s\r\n", 04031 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04032 04033 o0nativeformats = c0->nativeformats; 04034 o1nativeformats = c1->nativeformats; 04035 04036 if (config->feature_timer) { 04037 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 04038 } else if (config->timelimit) { 04039 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04040 if (caller_warning || callee_warning) 04041 nexteventts = ast_tvsub(nexteventts, ast_samp2tv(config->play_warning, 1000)); 04042 } 04043 04044 if (!c0->tech->send_digit_begin) 04045 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 04046 if (!c1->tech->send_digit_begin) 04047 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 04048 04049 for (/* ever */;;) { 04050 struct timeval now = { 0, }; 04051 int to; 04052 04053 to = -1; 04054 04055 if (!ast_tvzero(nexteventts)) { 04056 now = ast_tvnow(); 04057 to = ast_tvdiff_ms(nexteventts, now); 04058 if (to <= 0) { 04059 if (!config->timelimit) { 04060 res = AST_BRIDGE_COMPLETE; 04061 break; 04062 } 04063 to = 0; 04064 } 04065 } 04066 04067 if (config->timelimit) { 04068 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04069 if (time_left_ms < to) 04070 to = time_left_ms; 04071 04072 if (time_left_ms <= 0) { 04073 if (caller_warning && config->end_sound) 04074 bridge_playfile(c0, c1, config->end_sound, 0); 04075 if (callee_warning && config->end_sound) 04076 bridge_playfile(c1, c0, config->end_sound, 0); 04077 *fo = NULL; 04078 if (who) 04079 *rc = who; 04080 res = 0; 04081 break; 04082 } 04083 04084 if (!to) { 04085 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning) { 04086 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04087 if (caller_warning) 04088 bridge_playfile(c0, c1, config->warning_sound, t); 04089 if (callee_warning) 04090 bridge_playfile(c1, c0, config->warning_sound, t); 04091 } 04092 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04093 nexteventts = ast_tvadd(nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04094 else 04095 nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04096 } 04097 } 04098 04099 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 04100 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04101 c0->_softhangup = 0; 04102 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04103 c1->_softhangup = 0; 04104 c0->_bridge = c1; 04105 c1->_bridge = c0; 04106 if (option_debug) 04107 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04108 continue; 04109 } 04110 04111 /* Stop if we're a zombie or need a soft hangup */ 04112 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04113 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04114 *fo = NULL; 04115 if (who) 04116 *rc = who; 04117 res = 0; 04118 if (option_debug) 04119 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", 04120 c0->name, c1->name, 04121 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04122 ast_check_hangup(c0) ? "Yes" : "No", 04123 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04124 ast_check_hangup(c1) ? "Yes" : "No"); 04125 break; 04126 } 04127 04128 if (c0->tech->bridge && 04129 (config->timelimit == 0) && 04130 (c0->tech->bridge == c1->tech->bridge) && 04131 !nativefailed && !c0->monitor && !c1->monitor && 04132 !c0->spies && !c1->spies && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04133 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) ) { 04134 /* Looks like they share a bridge method and nothing else is in the way */ 04135 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04136 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04137 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04138 /* \todo XXX here should check that cid_num is not NULL */ 04139 manager_event(EVENT_FLAG_CALL, "Unlink", 04140 "Channel1: %s\r\n" 04141 "Channel2: %s\r\n" 04142 "Uniqueid1: %s\r\n" 04143 "Uniqueid2: %s\r\n" 04144 "CallerID1: %s\r\n" 04145 "CallerID2: %s\r\n", 04146 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04147 if (option_debug) 04148 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04149 04150 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04151 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04152 04153 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 04154 continue; 04155 04156 c0->_bridge = NULL; 04157 c1->_bridge = NULL; 04158 04159 return res; 04160 } else { 04161 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04162 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04163 } 04164 switch (res) { 04165 case AST_BRIDGE_RETRY: 04166 continue; 04167 default: 04168 if (option_verbose > 2) 04169 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04170 c0->name, c1->name); 04171 /* fallthrough */ 04172 case AST_BRIDGE_FAILED_NOWARN: 04173 nativefailed++; 04174 break; 04175 } 04176 } 04177 04178 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04179 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04180 !(c0->generator || c1->generator)) { 04181 if (ast_channel_make_compatible(c0, c1)) { 04182 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04183 /* \todo XXX here should check that cid_num is not NULL */ 04184 manager_event(EVENT_FLAG_CALL, "Unlink", 04185 "Channel1: %s\r\n" 04186 "Channel2: %s\r\n" 04187 "Uniqueid1: %s\r\n" 04188 "Uniqueid2: %s\r\n" 04189 "CallerID1: %s\r\n" 04190 "CallerID2: %s\r\n", 04191 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04192 return AST_BRIDGE_FAILED; 04193 } 04194 o0nativeformats = c0->nativeformats; 04195 o1nativeformats = c1->nativeformats; 04196 } 04197 res = ast_generic_bridge(c0, c1, config, fo, rc, nexteventts); 04198 if (res != AST_BRIDGE_RETRY) 04199 break; 04200 } 04201 04202 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 04203 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 04204 04205 c0->_bridge = NULL; 04206 c1->_bridge = NULL; 04207 04208 /* \todo XXX here should check that cid_num is not NULL */ 04209 manager_event(EVENT_FLAG_CALL, "Unlink", 04210 "Channel1: %s\r\n" 04211 "Channel2: %s\r\n" 04212 "Uniqueid1: %s\r\n" 04213 "Uniqueid2: %s\r\n" 04214 "CallerID1: %s\r\n" 04215 "CallerID2: %s\r\n", 04216 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04217 if (option_debug) 04218 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 04219 04220 return res; 04221 }
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 486 of file channel.c.
References ast_channel::whentohangup.
00487 { 00488 time_t whentohangup; 00489 00490 if (chan->whentohangup == 0) { 00491 return (offset == 0) ? 0 : -1; 00492 } else { 00493 if (offset == 0) /* XXX why is this special ? */ 00494 return (1); 00495 else { 00496 whentohangup = offset + time (NULL); 00497 if (chan->whentohangup < whentohangup) 00498 return (1); 00499 else if (chan->whentohangup == whentohangup) 00500 return (0); 00501 else 00502 return (-1); 00503 } 00504 } 00505 }
int ast_channel_datastore_add | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Add a datastore to a channel.
Definition at line 1281 of file channel.c.
References AST_LIST_INSERT_HEAD.
Referenced by speech_create().
01282 { 01283 int res = 0; 01284 01285 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01286 01287 return res; 01288 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1237 of file channel.c.
References ast_calloc, ast_strdup, and ast_datastore::info.
Referenced by speech_create().
01238 { 01239 struct ast_datastore *datastore = NULL; 01240 01241 /* Make sure we at least have type so we can identify this */ 01242 if (info == NULL) { 01243 return NULL; 01244 } 01245 01246 /* Allocate memory for datastore and clear it */ 01247 datastore = ast_calloc(1, sizeof(*datastore)); 01248 if (datastore == NULL) { 01249 return NULL; 01250 } 01251 01252 datastore->info = info; 01253 01254 datastore->uid = ast_strdup(uid); 01255 01256 return datastore; 01257 }
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 1308 of file channel.c.
References AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_datastore::info, and ast_datastore::uid.
Referenced by find_speech(), speech_background(), and speech_destroy().
01309 { 01310 struct ast_datastore *datastore = NULL; 01311 01312 if (info == NULL) 01313 return NULL; 01314 01315 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01316 if (datastore->info == info) { 01317 if (uid != NULL && datastore->uid != NULL) { 01318 if (!strcasecmp(uid, datastore->uid)) { 01319 /* Matched by type AND uid */ 01320 break; 01321 } 01322 } else { 01323 /* Matched by type at least */ 01324 break; 01325 } 01326 } 01327 } 01328 AST_LIST_TRAVERSE_SAFE_END 01329 01330 return datastore; 01331 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1259 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().
01260 { 01261 int res = 0; 01262 01263 /* Using the destroy function (if present) destroy the data */ 01264 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01265 datastore->info->destroy(datastore->data); 01266 datastore->data = NULL; 01267 } 01268 01269 /* Free allocated UID memory */ 01270 if (datastore->uid != NULL) { 01271 free(datastore->uid); 01272 datastore->uid = NULL; 01273 } 01274 01275 /* Finally free memory used by ourselves */ 01276 free(datastore); 01277 01278 return res; 01279 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1290 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, and AST_LIST_TRAVERSE_SAFE_END.
Referenced by speech_background(), and speech_destroy().
01291 { 01292 struct ast_datastore *datastore2 = NULL; 01293 int res = -1; 01294 01295 /* Find our position and remove ourselves */ 01296 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01297 if (datastore2 == datastore) { 01298 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01299 res = 0; 01300 break; 01301 } 01302 } 01303 AST_LIST_TRAVERSE_SAFE_END 01304 01305 return res; 01306 }
int ast_channel_defer_dtmf | ( | struct ast_channel * | chan | ) |
Set defer DTMF flag on channel.
Defer DTMF so that you only read things like hangups and audio. Returns non-zero if channel was already DTMF-deferred or 0 if channel is just now being DTMF-deferred
Definition at line 974 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
00975 { 00976 int pre = 0; 00977 00978 if (chan) { 00979 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 00980 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 00981 } 00982 return pre; 00983 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1155 of file channel.c.
References ast_channel::alertpipe, ast_app_group_discard(), ast_channel_datastore_free(), ast_channel_lock, AST_CHANNEL_NAME, ast_channel_unlock, ast_channel_whisper_stop(), ast_device_state_changed_literal(), ast_frfree(), ast_jb_destroy(), AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, ast_log(), ast_moh_cleanup(), ast_mutex_destroy(), ast_string_field_free_pools, ast_translator_free_path(), ast_var_delete(), ast_channel::cid, f, free, free_cid(), ast_channel::lock, LOG_WARNING, ast_channel::monitor, ast_channel::music_state, name, ast_channel::pbx, ast_channel::readtrans, ast_channel::sched, sched_context_destroy(), ast_channel_monitor::stop, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel::varshead, ast_channel::whisper, and ast_channel::writetrans.
Referenced by agent_cleanup(), agent_new(), ast_hangup(), ast_pbx_outgoing_cdr_failed(), local_new(), make_email_file(), pbx_substitute_variables_helper_full(), and sendpage().
01156 { 01157 int fd; 01158 struct ast_var_t *vardata; 01159 struct ast_frame *f; 01160 struct varshead *headp; 01161 struct ast_datastore *datastore = NULL; 01162 char name[AST_CHANNEL_NAME]; 01163 01164 headp=&chan->varshead; 01165 01166 AST_LIST_LOCK(&channels); 01167 AST_LIST_REMOVE(&channels, chan, chan_list); 01168 /* Lock and unlock the channel just to be sure nobody 01169 has it locked still */ 01170 ast_channel_lock(chan); 01171 ast_channel_unlock(chan); 01172 if (chan->tech_pvt) { 01173 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01174 free(chan->tech_pvt); 01175 } 01176 01177 if (chan->sched) 01178 sched_context_destroy(chan->sched); 01179 01180 ast_copy_string(name, chan->name, sizeof(name)); 01181 01182 /* Stop monitoring */ 01183 if (chan->monitor) 01184 chan->monitor->stop( chan, 0 ); 01185 01186 /* If there is native format music-on-hold state, free it */ 01187 if (chan->music_state) 01188 ast_moh_cleanup(chan); 01189 01190 /* if someone is whispering on the channel, stop them */ 01191 if (chan->whisper) 01192 ast_channel_whisper_stop(chan); 01193 01194 /* Free translators */ 01195 if (chan->readtrans) 01196 ast_translator_free_path(chan->readtrans); 01197 if (chan->writetrans) 01198 ast_translator_free_path(chan->writetrans); 01199 if (chan->pbx) 01200 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01201 free_cid(&chan->cid); 01202 ast_mutex_destroy(&chan->lock); 01203 /* Close pipes if appropriate */ 01204 if ((fd = chan->alertpipe[0]) > -1) 01205 close(fd); 01206 if ((fd = chan->alertpipe[1]) > -1) 01207 close(fd); 01208 if ((fd = chan->timingfd) > -1) 01209 close(fd); 01210 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01211 ast_frfree(f); 01212 01213 /* Get rid of each of the data stores on the channel */ 01214 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01215 /* Free the data store */ 01216 ast_channel_datastore_free(datastore); 01217 AST_LIST_HEAD_INIT_NOLOCK(&chan->datastores); 01218 01219 /* loop over the variables list, freeing all data and deleting list items */ 01220 /* no need to lock the list, as the channel is already locked */ 01221 01222 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01223 ast_var_delete(vardata); 01224 01225 ast_app_group_discard(chan); 01226 01227 /* Destroy the jitterbuffer */ 01228 ast_jb_destroy(chan); 01229 01230 ast_string_field_free_pools(chan); 01231 free(chan); 01232 AST_LIST_UNLOCK(&channels); 01233 01234 ast_device_state_changed_literal(name); 01235 }
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 3372 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().
03373 { 03374 struct ast_var_t *current, *newvar; 03375 const char *varname; 03376 03377 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 03378 int vartype = 0; 03379 03380 varname = ast_var_full_name(current); 03381 if (!varname) 03382 continue; 03383 03384 if (varname[0] == '_') { 03385 vartype = 1; 03386 if (varname[1] == '_') 03387 vartype = 2; 03388 } 03389 03390 switch (vartype) { 03391 case 1: 03392 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 03393 if (newvar) { 03394 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03395 if (option_debug) 03396 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 03397 } 03398 break; 03399 case 2: 03400 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 03401 if (newvar) { 03402 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 03403 if (option_debug) 03404 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 03405 } 03406 break; 03407 default: 03408 if (option_debug) 03409 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 03410 break; 03411 } 03412 } 03413 }
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 3246 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, and ast_channel::nativeformats.
Referenced by app_exec(), ast_channel_bridge(), check_compat(), park_exec(), try_calling(), and wait_for_answer().
03247 { 03248 int src; 03249 int dst; 03250 03251 /* Set up translation from the chan to the peer */ 03252 src = chan->nativeformats; 03253 dst = peer->nativeformats; 03254 if (ast_translator_best_choice(&dst, &src) < 0) { 03255 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03256 return -1; 03257 } 03258 03259 /* if the best path is not 'pass through', then 03260 transcoding is needed; if desired, force transcode path 03261 to use SLINEAR between channels, but only if there is 03262 no direct conversion available */ 03263 if ((src != dst) && ast_opt_transcode_via_slin && 03264 (ast_translate_path_steps(dst, src) != 1)) 03265 dst = AST_FORMAT_SLINEAR; 03266 if (ast_set_read_format(chan, dst) < 0) { 03267 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03268 return -1; 03269 } 03270 if (ast_set_write_format(peer, dst) < 0) { 03271 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03272 return -1; 03273 } 03274 03275 /* Set up translation from the peer to the chan */ 03276 src = peer->nativeformats; 03277 dst = chan->nativeformats; 03278 if (ast_translator_best_choice(&dst, &src) < 0) { 03279 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03280 return -1; 03281 } 03282 03283 /* if the best path is not 'pass through', then 03284 transcoding is needed; if desired, force transcode path 03285 to use SLINEAR between channels, but only if there is 03286 no direct conversion available */ 03287 if ((src != dst) && ast_opt_transcode_via_slin && 03288 (ast_translate_path_steps(dst, src) != 1)) 03289 dst = AST_FORMAT_SLINEAR; 03290 if (ast_set_read_format(peer, dst) < 0) { 03291 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03292 return -1; 03293 } 03294 if (ast_set_write_format(chan, dst) < 0) { 03295 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03296 return -1; 03297 } 03298 return 0; 03299 }
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 3301 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(), LOG_DEBUG, LOG_WARNING, ast_channel::masq, ast_channel::masqr, and option_debug.
Referenced by ast_async_goto(), ast_masq_park_call(), ast_pickup_call(), attempt_transfer(), builtin_atxfer(), check_availability(), check_bridge(), check_goto_on_transfer(), handle_invite_replaces(), iax_park(), misdn_transfer_bc(), pickup_do(), and sip_park().
03302 { 03303 int res = -1; 03304 struct ast_channel *final_orig = original, *final_clone = clone; 03305 03306 ast_channel_lock(original); 03307 while (ast_channel_trylock(clone)) { 03308 ast_channel_unlock(original); 03309 usleep(1); 03310 ast_channel_lock(original); 03311 } 03312 03313 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03314 and if so, we don't really want to masquerade it, but its proxy */ 03315 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03316 final_orig = original->_bridge; 03317 03318 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03319 final_clone = clone->_bridge; 03320 03321 if ((final_orig != original) || (final_clone != clone)) { 03322 ast_channel_lock(final_orig); 03323 while (ast_channel_trylock(final_clone)) { 03324 ast_channel_unlock(final_orig); 03325 usleep(1); 03326 ast_channel_lock(final_orig); 03327 } 03328 ast_channel_unlock(clone); 03329 ast_channel_unlock(original); 03330 original = final_orig; 03331 clone = final_clone; 03332 } 03333 03334 if (original == clone) { 03335 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 03336 ast_channel_unlock(clone); 03337 ast_channel_unlock(original); 03338 return -1; 03339 } 03340 03341 if (option_debug) 03342 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 03343 clone->name, original->name); 03344 if (original->masq) { 03345 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03346 original->masq->name, original->name); 03347 } else if (clone->masqr) { 03348 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 03349 clone->name, clone->masqr->name); 03350 } else { 03351 original->masq = clone; 03352 clone->masqr = original; 03353 ast_queue_frame(original, &ast_null_frame); 03354 ast_queue_frame(clone, &ast_null_frame); 03355 if (option_debug) 03356 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 03357 res = 0; 03358 } 03359 03360 ast_channel_unlock(clone); 03361 ast_channel_unlock(original); 03362 03363 return res; 03364 }
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 508 of file channel.c.
References ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_verbose(), 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().
00509 { 00510 struct chanlist *chan; 00511 00512 AST_LIST_LOCK(&channels); 00513 00514 AST_LIST_TRAVERSE(&backends, chan, list) { 00515 if (!strcasecmp(tech->type, chan->tech->type)) { 00516 ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type); 00517 AST_LIST_UNLOCK(&channels); 00518 return -1; 00519 } 00520 } 00521 00522 if (!(chan = ast_calloc(1, sizeof(*chan)))) { 00523 AST_LIST_UNLOCK(&channels); 00524 return -1; 00525 } 00526 chan->tech = tech; 00527 AST_LIST_INSERT_HEAD(&backends, chan, list); 00528 00529 if (option_debug) 00530 ast_log(LOG_DEBUG, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description); 00531 00532 if (option_verbose > 1) 00533 ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type, 00534 chan->tech->description); 00535 00536 AST_LIST_UNLOCK(&channels); 00537 return 0; 00538 }
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 3234 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().
03235 { 03236 if (chan->tech->send_html) 03237 return chan->tech->send_html(chan, subclass, data, datalen); 03238 return -1; 03239 }
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 3241 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec(), and try_calling().
03242 { 03243 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03244 }
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 4224 of file channel.c.
References ast_log(), LOG_ERROR, ast_channel_tech::setoption, and ast_channel::tech.
Referenced by ast_bridge_call(), common_exec(), conf_run(), func_channel_write(), handle_tddmode(), play_record_review(), reset_volumes(), rpt(), set_listen_volume(), set_talk_volume(), set_volume(), try_calling(), vm_forwardoptions(), and zt_hangup().
04225 { 04226 int res; 04227 04228 if (chan->tech->setoption) { 04229 res = chan->tech->setoption(chan, option, data, datalen); 04230 if (res < 0) 04231 return res; 04232 } else { 04233 errno = ENOSYS; 04234 return -1; 04235 } 04236 if (block) { 04237 /* XXX Implement blocking -- just wait for our option frame reply, discarding 04238 intermediate packets. XXX */ 04239 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 04240 return -1; 04241 } 04242 return 0; 04243 }
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 478 of file channel.c.
References ast_null_frame, ast_queue_frame(), and ast_channel::whentohangup.
Referenced by action_timeout(), and timeout_write().
00479 { 00480 chan->whentohangup = offset ? time(NULL) + offset : 0; 00481 ast_queue_frame(chan, &ast_null_frame); 00482 return; 00483 }
int ast_channel_spy_add | ( | struct ast_channel * | chan, | |
struct ast_channel_spy * | spy | |||
) |
Adds a spy to a channel, to begin receiving copies of the channel's audio frames.
chan | The channel to add the spy to. | |
spy | A pointer to ast_channel_spy structure describing how the spy is to be used. |
Definition at line 1333 of file channel.c.
References ast_calloc, ast_clear_flag, ast_cond_init(), AST_FORMAT_SLINEAR, ast_getformatname(), AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_INSERT_HEAD, AST_LIST_INSERT_TAIL, ast_log(), ast_set_flag, ast_test_flag, ast_channel_spy::chan, CHANSPY_FORMAT_AUDIO, CHANSPY_MIXAUDIO, CHANSPY_READ_VOLADJUST, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, CHANSPY_TRIGGER_READ, CHANSPY_TRIGGER_WRITE, CHANSPY_WRITE_VOLADJUST, ast_channel_spy_queue::format, LOG_DEBUG, LOG_WARNING, option_debug, ast_channel_spy::read_queue, ast_channel::spies, ast_channel_spy::trigger, ast_channel_spy::type, and ast_channel_spy::write_queue.
Referenced by start_spying(), and startmon().
01334 { 01335 /* Link the owner channel to the spy */ 01336 spy->chan = chan; 01337 01338 if (!ast_test_flag(spy, CHANSPY_FORMAT_AUDIO)) { 01339 ast_log(LOG_WARNING, "Could not add channel spy '%s' to channel '%s', only audio format spies are supported.\n", 01340 spy->type, chan->name); 01341 return -1; 01342 } 01343 01344 if (ast_test_flag(spy, CHANSPY_READ_VOLADJUST) && (spy->read_queue.format != AST_FORMAT_SLINEAR)) { 01345 ast_log(LOG_WARNING, "Cannot provide volume adjustment on '%s' format spies\n", 01346 ast_getformatname(spy->read_queue.format)); 01347 return -1; 01348 } 01349 01350 if (ast_test_flag(spy, CHANSPY_WRITE_VOLADJUST) && (spy->write_queue.format != AST_FORMAT_SLINEAR)) { 01351 ast_log(LOG_WARNING, "Cannot provide volume adjustment on '%s' format spies\n", 01352 ast_getformatname(spy->write_queue.format)); 01353 return -1; 01354 } 01355 01356 if (ast_test_flag(spy, CHANSPY_MIXAUDIO) && 01357 ((spy->read_queue.format != AST_FORMAT_SLINEAR) || 01358 (spy->write_queue.format != AST_FORMAT_SLINEAR))) { 01359 ast_log(LOG_WARNING, "Cannot provide audio mixing on '%s'-'%s' format spies\n", 01360 ast_getformatname(spy->read_queue.format), ast_getformatname(spy->write_queue.format)); 01361 return -1; 01362 } 01363 01364 if (!chan->spies) { 01365 if (!(chan->spies = ast_calloc(1, sizeof(*chan->spies)))) { 01366 return -1; 01367 } 01368 01369 AST_LIST_HEAD_INIT_NOLOCK(&chan->spies->list); 01370 AST_LIST_INSERT_HEAD(&chan->spies->list, spy, list); 01371 } else { 01372 AST_LIST_INSERT_TAIL(&chan->spies->list, spy, list); 01373 } 01374 01375 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) { 01376 ast_cond_init(&spy->trigger, NULL); 01377 ast_set_flag(spy, CHANSPY_TRIGGER_READ); 01378 ast_clear_flag(spy, CHANSPY_TRIGGER_WRITE); 01379 } 01380 01381 if (option_debug) 01382 ast_log(LOG_DEBUG, "Spy %s added to channel %s\n", 01383 spy->type, chan->name); 01384 01385 return 0; 01386 }
void ast_channel_spy_free | ( | struct ast_channel_spy * | spy | ) |
Free a spy.
spy | The spy to free |
Definition at line 1468 of file channel.c.
References ast_cond_destroy(), ast_frfree(), AST_LIST_REMOVE_HEAD, ast_mutex_destroy(), ast_test_flag, CHANSPY_DONE, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, f, ast_channel_spy::lock, ast_channel_spy::read_queue, ast_channel_spy::status, ast_channel_spy::trigger, and ast_channel_spy::write_queue.
Referenced by channel_spy(), and mixmonitor_thread().
01469 { 01470 struct ast_frame *f = NULL; 01471 01472 if (spy->status == CHANSPY_DONE) 01473 return; 01474 01475 /* Switch status to done in case we get called twice */ 01476 spy->status = CHANSPY_DONE; 01477 01478 /* Drop any frames in the queue */ 01479 while ((f = AST_LIST_REMOVE_HEAD(&spy->write_queue.list, frame_list))) 01480 ast_frfree(f); 01481 while ((f = AST_LIST_REMOVE_HEAD(&spy->read_queue.list, frame_list))) 01482 ast_frfree(f); 01483 01484 /* Destroy the condition if in use */ 01485 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) 01486 ast_cond_destroy(&spy->trigger); 01487 01488 /* Destroy our mutex since it is no longer in use */ 01489 ast_mutex_destroy(&spy->lock); 01490 01491 return; 01492 }
struct ast_frame* ast_channel_spy_read_frame | ( | struct ast_channel_spy * | spy, | |
unsigned int | samples | |||
) |
Read one (or more) frames of audio from a channel being spied upon.
spy | The spy to operate on | |
samples | The number of audio samples to read |
Note: This function performs no locking; you must hold the spy's lock before calling this function. You must not hold the channel's lock at the same time.
Definition at line 4540 of file channel.c.
References ast_clear_flag, ast_codec_get_len(), ast_frame_adjust_volume(), ast_frame_slinear_sum(), AST_FRAME_VOICE, ast_frdup(), ast_frfree(), AST_LIST_FIRST, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_NEXT, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_test_flag, CHANSPY_MIXAUDIO, CHANSPY_READ_VOLADJUST, CHANSPY_TRIGGER_FLUSH, CHANSPY_WRITE_VOLADJUST, copy_data_from_queue(), ast_channel_spy_queue::format, ast_frame::frametype, ast_channel_spy::read_queue, ast_channel_spy::read_vol_adjustment, result, ast_channel_spy_queue::samples, ast_channel_spy::write_queue, and ast_channel_spy::write_vol_adjustment.
Referenced by mixmonitor_thread(), and spy_generate().
04541 { 04542 struct ast_frame *result; 04543 /* buffers are allocated to hold SLINEAR, which is the largest format */ 04544 short read_buf[samples]; 04545 short write_buf[samples]; 04546 struct ast_frame *read_frame; 04547 struct ast_frame *write_frame; 04548 int need_dup; 04549 struct ast_frame stack_read_frame = { .frametype = AST_FRAME_VOICE, 04550 .subclass = spy->read_queue.format, 04551 .data = read_buf, 04552 .samples = samples, 04553 .datalen = ast_codec_get_len(spy->read_queue.format, samples), 04554 }; 04555 struct ast_frame stack_write_frame = { .frametype = AST_FRAME_VOICE, 04556 .subclass = spy->write_queue.format, 04557 .data = write_buf, 04558 .samples = samples, 04559 .datalen = ast_codec_get_len(spy->write_queue.format, samples), 04560 }; 04561 04562 /* if a flush has been requested, dump everything in whichever queue is larger */ 04563 if (ast_test_flag(spy, CHANSPY_TRIGGER_FLUSH)) { 04564 if (spy->read_queue.samples > spy->write_queue.samples) { 04565 if (ast_test_flag(spy, CHANSPY_READ_VOLADJUST)) { 04566 AST_LIST_TRAVERSE(&spy->read_queue.list, result, frame_list) 04567 ast_frame_adjust_volume(result, spy->read_vol_adjustment); 04568 } 04569 result = AST_LIST_FIRST(&spy->read_queue.list); 04570 AST_LIST_HEAD_SET_NOLOCK(&spy->read_queue.list, NULL); 04571 spy->read_queue.samples = 0; 04572 } else { 04573 if (ast_test_flag(spy, CHANSPY_WRITE_VOLADJUST)) { 04574 AST_LIST_TRAVERSE(&spy->write_queue.list, result, frame_list) 04575 ast_frame_adjust_volume(result, spy->write_vol_adjustment); 04576 } 04577 result = AST_LIST_FIRST(&spy->write_queue.list); 04578 AST_LIST_HEAD_SET_NOLOCK(&spy->write_queue.list, NULL); 04579 spy->write_queue.samples = 0; 04580 } 04581 ast_clear_flag(spy, CHANSPY_TRIGGER_FLUSH); 04582 return result; 04583 } 04584 04585 if ((spy->read_queue.samples < samples) || (spy->write_queue.samples < samples)) 04586 return NULL; 04587 04588 /* short-circuit if both head frames have exactly what we want */ 04589 if ((AST_LIST_FIRST(&spy->read_queue.list)->samples == samples) && 04590 (AST_LIST_FIRST(&spy->write_queue.list)->samples == samples)) { 04591 read_frame = AST_LIST_REMOVE_HEAD(&spy->read_queue.list, frame_list); 04592 write_frame = AST_LIST_REMOVE_HEAD(&spy->write_queue.list, frame_list); 04593 04594 spy->read_queue.samples -= samples; 04595 spy->write_queue.samples -= samples; 04596 04597 need_dup = 0; 04598 } else { 04599 copy_data_from_queue(&spy->read_queue, read_buf, samples); 04600 copy_data_from_queue(&spy->write_queue, write_buf, samples); 04601 04602 read_frame = &stack_read_frame; 04603 write_frame = &stack_write_frame; 04604 need_dup = 1; 04605 } 04606 04607 if (ast_test_flag(spy, CHANSPY_READ_VOLADJUST)) 04608 ast_frame_adjust_volume(read_frame, spy->read_vol_adjustment); 04609 04610 if (ast_test_flag(spy, CHANSPY_WRITE_VOLADJUST)) 04611 ast_frame_adjust_volume(write_frame, spy->write_vol_adjustment); 04612 04613 if (ast_test_flag(spy, CHANSPY_MIXAUDIO)) { 04614 ast_frame_slinear_sum(read_frame, write_frame); 04615 04616 if (need_dup) 04617 result = ast_frdup(read_frame); 04618 else { 04619 result = read_frame; 04620 ast_frfree(write_frame); 04621 } 04622 } else { 04623 if (need_dup) { 04624 result = ast_frdup(read_frame); 04625 AST_LIST_NEXT(result, frame_list) = ast_frdup(write_frame); 04626 } else { 04627 result = read_frame; 04628 AST_LIST_NEXT(result, frame_list) = write_frame; 04629 } 04630 } 04631 04632 return result; 04633 }
void ast_channel_spy_remove | ( | struct ast_channel * | chan, | |
struct ast_channel_spy * | spy | |||
) |
Remove a spy from a channel.
chan | The channel to remove the spy from | |
spy | The spy to be removed |
Definition at line 1458 of file channel.c.
References AST_LIST_REMOVE, ast_channel::spies, spy_cleanup(), and spy_detach().
Referenced by channel_spy().
01459 { 01460 if (!chan->spies) 01461 return; 01462 01463 AST_LIST_REMOVE(&chan->spies->list, spy, list); 01464 spy_detach(spy, chan); 01465 spy_cleanup(chan); 01466 }
void ast_channel_spy_stop_by_type | ( | struct ast_channel * | chan, | |
const char * | type | |||
) |
Find all spies of a particular type on a channel and stop them.
chan | The channel to operate on | |
type | A character string identifying the type of spies to be stopped |
Definition at line 1426 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_mutex_lock(), ast_mutex_unlock(), ast_channel_spy::chan, CHANSPY_RUNNING, ast_channel_spy::lock, ast_channel::spies, spy_cleanup(), spy_detach(), ast_channel_spy::status, and ast_channel_spy::type.
Referenced by mixmonitor_cli(), and stop_mixmonitor_exec().
01427 { 01428 struct ast_channel_spy *spy = NULL; 01429 01430 if (!chan->spies) 01431 return; 01432 01433 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) { 01434 ast_mutex_lock(&spy->lock); 01435 if ((spy->type == type) && (spy->status == CHANSPY_RUNNING)) { 01436 ast_mutex_unlock(&spy->lock); 01437 AST_LIST_REMOVE_CURRENT(&chan->spies->list, list); 01438 spy_detach(spy, chan); 01439 } else 01440 ast_mutex_unlock(&spy->lock); 01441 } 01442 AST_LIST_TRAVERSE_SAFE_END 01443 spy_cleanup(chan); 01444 }
void ast_channel_spy_trigger_wait | ( | struct ast_channel_spy * | spy | ) |
Efficiently wait until audio is available for a spy, or an exception occurs.
spy | The spy to wait on |
Definition at line 1446 of file channel.c.
References ast_cond_timedwait(), ast_tvadd(), ast_channel_spy::lock, and ast_channel_spy::trigger.
Referenced by mixmonitor_thread().
01447 { 01448 struct timeval tv; 01449 struct timespec ts; 01450 01451 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 01452 ts.tv_sec = tv.tv_sec; 01453 ts.tv_nsec = tv.tv_usec * 1000; 01454 01455 ast_cond_timedwait(&spy->trigger, &spy->lock, &ts); 01456 }
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 4672 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, silence_generator, and ast_channel::writeformat.
Referenced by __ast_play_and_record(), and channel_spy().
04673 { 04674 struct ast_silence_generator *state; 04675 04676 if (!(state = ast_calloc(1, sizeof(*state)))) { 04677 return NULL; 04678 } 04679 04680 state->old_write_format = chan->writeformat; 04681 04682 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 04683 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 04684 free(state); 04685 return NULL; 04686 } 04687 04688 ast_activate_generator(chan, &silence_generator, state); 04689 04690 if (option_debug) 04691 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 04692 04693 return state; 04694 }
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 4696 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, and ast_silence_generator::old_write_format.
Referenced by __ast_play_and_record(), and channel_spy().
04697 { 04698 if (!state) 04699 return; 04700 04701 ast_deactivate_generator(chan); 04702 04703 if (option_debug) 04704 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 04705 04706 if (ast_set_write_format(chan, state->old_write_format) < 0) 04707 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 04708 04709 free(state); 04710 }
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 3229 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by sendurl_exec(), and try_calling().
void ast_channel_undefer_dtmf | ( | struct ast_channel * | chan | ) |
Unset defer DTMF flag on channel.
Undo defer. ast_read will return any dtmf characters that were queued
Definition at line 986 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
00987 { 00988 if (chan) 00989 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 00990 }
void ast_channel_unregister | ( | const struct ast_channel_tech * | tech | ) |
Unregister a channel technology.
tech | Structure defining channel technology or "type" that was previously registered |
Definition at line 540 of file channel.c.
References AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, ast_log(), ast_verbose(), free, LOG_DEBUG, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by __unload_module(), and unload_module().
00541 { 00542 struct chanlist *chan; 00543 00544 if (option_debug) 00545 ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type); 00546 00547 AST_LIST_LOCK(&channels); 00548 00549 AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) { 00550 if (chan->tech == tech) { 00551 AST_LIST_REMOVE_CURRENT(&backends, list); 00552 free(chan); 00553 if (option_verbose > 1) 00554 ast_verbose(VERBOSE_PREFIX_2 "Unregistered channel type '%s'\n", tech->type); 00555 break; 00556 } 00557 } 00558 AST_LIST_TRAVERSE_SAFE_END 00559 00560 AST_LIST_UNLOCK(&channels); 00561 }
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 1076 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(), moh_on_off(), next_channel(), pickup_by_exten(), pickup_by_mark(), and softhangup_exec().
01077 { 01078 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01079 }
int ast_channel_whisper_feed | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Feed an audio frame into the whisper buffer on a channel.
chan | The channel to whisper onto | |
f | The frame to to whisper onto chan |
Definition at line 4910 of file channel.c.
References ast_mutex_lock(), ast_mutex_unlock(), ast_slinfactory_feed(), f, ast_channel_whisper_buffer::lock, ast_channel_whisper_buffer::sf, and ast_channel::whisper.
Referenced by channel_spy().
04911 { 04912 if (!chan->whisper) 04913 return -1; 04914 04915 ast_mutex_lock(&chan->whisper->lock); 04916 ast_slinfactory_feed(&chan->whisper->sf, f); 04917 ast_mutex_unlock(&chan->whisper->lock); 04918 04919 return 0; 04920 }
int ast_channel_whisper_start | ( | struct ast_channel * | chan | ) |
Begin 'whispering' onto a channel.
chan | The channel to whisper onto |
Definition at line 4895 of file channel.c.
References ast_calloc, AST_FLAG_WHISPER, ast_mutex_init(), ast_set_flag, ast_slinfactory_init(), ast_channel_whisper_buffer::lock, ast_channel_whisper_buffer::sf, and ast_channel::whisper.
Referenced by channel_spy().
04896 { 04897 if (chan->whisper) 04898 return -1; 04899 04900 if (!(chan->whisper = ast_calloc(1, sizeof(*chan->whisper)))) 04901 return -1; 04902 04903 ast_mutex_init(&chan->whisper->lock); 04904 ast_slinfactory_init(&chan->whisper->sf); 04905 ast_set_flag(chan, AST_FLAG_WHISPER); 04906 04907 return 0; 04908 }
void ast_channel_whisper_stop | ( | struct ast_channel * | chan | ) |
Stop 'whispering' onto a channel.
chan | The channel to whisper onto |
Definition at line 4922 of file channel.c.
References ast_clear_flag, AST_FLAG_WHISPER, AST_FORMAT_SLINEAR, ast_mutex_destroy(), ast_set_write_format(), ast_slinfactory_destroy(), ast_translator_free_path(), free, ast_channel_whisper_buffer::original_format, ast_channel_whisper_buffer::path, ast_channel::whisper, and ast_channel::writeformat.
Referenced by ast_channel_free(), and channel_spy().
04923 { 04924 if (!chan->whisper) 04925 return; 04926 04927 ast_clear_flag(chan, AST_FLAG_WHISPER); 04928 if (chan->whisper->path) 04929 ast_translator_free_path(chan->whisper->path); 04930 if (chan->whisper->original_format && chan->writeformat == AST_FORMAT_SLINEAR) 04931 ast_set_write_format(chan, chan->whisper->original_format); 04932 ast_slinfactory_destroy(&chan->whisper->sf); 04933 ast_mutex_destroy(&chan->whisper->lock); 04934 free(chan->whisper); 04935 chan->whisper = NULL; 04936 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 4473 of file channel.c.
References ast_cli_register_multiple(), and cli_channel.
Referenced by main().
04474 { 04475 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 04476 }
struct ast_variable* ast_channeltype_list | ( | void | ) |
return an ast_variable list of channeltypes
Definition at line 180 of file channel.c.
References AST_LIST_TRAVERSE, ast_variable_new(), ast_channel_tech::description, chanlist::tech, ast_channel_tech::type, and var.
00181 { 00182 struct chanlist *cl; 00183 struct ast_variable *var=NULL, *prev = NULL; 00184 AST_LIST_TRAVERSE(&backends, cl, list) { 00185 if (prev) { 00186 if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description))) 00187 prev = prev->next; 00188 } else { 00189 var = ast_variable_new(cl->tech->type, cl->tech->description); 00190 prev = var; 00191 } 00192 } 00193 return var; 00194 }
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 402 of file channel.c.
References ast_channel::_softhangup, AST_SOFTHANGUP_TIMEOUT, ast_channel::tech_pvt, and ast_channel::whentohangup.
Referenced by __ast_read(), action_redirect(), app_exec(), ast_answer(), ast_call(), ast_cdr_update(), ast_channel_bridge(), ast_check_hangup_locked(), ast_feature_request_and_dial(), ast_indicate_data(), ast_readstring_full(), ast_recvtext(), ast_sendtext(), ast_transfer(), ast_udptl_bridge(), ast_waitfordigit_full(), ast_write(), bridge_native_loop(), bridge_p2p_loop(), builtin_atxfer(), channel_spy(), common_exec(), handle_sendimage(), pbx_exec(), rpt(), rpt_exec(), zt_sendtext(), and zt_setoption().
00403 { 00404 if (chan->_softhangup) /* yes if soft hangup flag set */ 00405 return 1; 00406 if (!chan->tech_pvt) /* yes if no technology private data */ 00407 return 1; 00408 if (!chan->whentohangup) /* no if no hangup scheduled */ 00409 return 0; 00410 if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */ 00411 return 0; 00412 chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */ 00413 return 1; 00414 }
static int ast_check_hangup_locked | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 416 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_check_hangup().
Referenced by ast_channel_bridge().
00417 { 00418 int res; 00419 ast_channel_lock(chan); 00420 res = ast_check_hangup(chan); 00421 ast_channel_unlock(chan); 00422 return res; 00423 }
void ast_deactivate_generator | ( | struct ast_channel * | chan | ) |
Deactive an active generator
Definition at line 1782 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_tonepair_stop(), ast_write(), channel_spy(), generator_force(), local_ast_moh_stop(), milliwatt_exec(), moh_on_off(), and wait_for_answer().
01783 { 01784 ast_channel_lock(chan); 01785 if (chan->generatordata) { 01786 if (chan->generator && chan->generator->release) 01787 chan->generator->release(chan, chan->generatordata); 01788 chan->generatordata = NULL; 01789 chan->generator = NULL; 01790 chan->fds[AST_GENERATOR_FD] = -1; 01791 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01792 ast_settimeout(chan, 0, NULL, NULL); 01793 } 01794 ast_channel_unlock(chan); 01795 }
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 3437 of file channel.c.
References ast_channel::_state, ast_channel::alertpipe, ast_channel_lock, AST_LIST_FIRST, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_TRAVERSE, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_string_field_set, ast_channel::cdr, ast_channel_spy::chan, EVENT_FLAG_CALL, free_translation(), ast_channel::lock, ast_channel_spy::lock, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, name, option_debug, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readformat, ast_channel::spies, t, ast_channel::tech, ast_channel::tech_pvt, 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().
03438 { 03439 int x,i; 03440 int res=0; 03441 int origstate; 03442 struct ast_frame *cur; 03443 const struct ast_channel_tech *t; 03444 void *t_pvt; 03445 struct ast_callerid tmpcid; 03446 struct ast_channel *clone = original->masq; 03447 struct ast_channel_spy_list *spy_list = NULL; 03448 struct ast_channel_spy *spy = NULL; 03449 struct ast_cdr *cdr; 03450 int rformat = original->readformat; 03451 int wformat = original->writeformat; 03452 char newn[100]; 03453 char orig[100]; 03454 char masqn[100]; 03455 char zombn[100]; 03456 03457 if (option_debug > 3) 03458 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 03459 clone->name, clone->_state, original->name, original->_state); 03460 03461 /* XXX This is a seriously wacked out operation. We're essentially putting the guts of 03462 the clone channel into the original channel. Start by killing off the original 03463 channel's backend. I'm not sure we're going to keep this function, because 03464 while the features are nice, the cost is very high in terms of pure nastiness. XXX */ 03465 03466 /* We need the clone's lock, too */ 03467 ast_channel_lock(clone); 03468 03469 if (option_debug > 1) 03470 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 03471 03472 /* Having remembered the original read/write formats, we turn off any translation on either 03473 one */ 03474 free_translation(clone); 03475 free_translation(original); 03476 03477 03478 /* Unlink the masquerade */ 03479 original->masq = NULL; 03480 clone->masqr = NULL; 03481 03482 /* Save the original name */ 03483 ast_copy_string(orig, original->name, sizeof(orig)); 03484 /* Save the new name */ 03485 ast_copy_string(newn, clone->name, sizeof(newn)); 03486 /* Create the masq name */ 03487 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 03488 03489 /* Copy the name from the clone channel */ 03490 ast_string_field_set(original, name, newn); 03491 03492 /* Mangle the name of the clone channel */ 03493 ast_string_field_set(clone, name, masqn); 03494 03495 /* Notify any managers of the change, first the masq then the other */ 03496 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 03497 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 03498 03499 /* Swap the technologies */ 03500 t = original->tech; 03501 original->tech = clone->tech; 03502 clone->tech = t; 03503 03504 /* Swap the cdrs */ 03505 cdr = original->cdr; 03506 original->cdr = clone->cdr; 03507 clone->cdr = cdr; 03508 03509 t_pvt = original->tech_pvt; 03510 original->tech_pvt = clone->tech_pvt; 03511 clone->tech_pvt = t_pvt; 03512 03513 /* Swap the readq's */ 03514 cur = AST_LIST_FIRST(&original->readq); 03515 AST_LIST_HEAD_SET_NOLOCK(&original->readq, AST_LIST_FIRST(&clone->readq)); 03516 AST_LIST_HEAD_SET_NOLOCK(&clone->readq, cur); 03517 03518 /* Swap the alertpipes */ 03519 for (i = 0; i < 2; i++) { 03520 x = original->alertpipe[i]; 03521 original->alertpipe[i] = clone->alertpipe[i]; 03522 clone->alertpipe[i] = x; 03523 } 03524 03525 /* Swap the raw formats */ 03526 x = original->rawreadformat; 03527 original->rawreadformat = clone->rawreadformat; 03528 clone->rawreadformat = x; 03529 x = original->rawwriteformat; 03530 original->rawwriteformat = clone->rawwriteformat; 03531 clone->rawwriteformat = x; 03532 03533 /* Swap the spies */ 03534 spy_list = original->spies; 03535 original->spies = clone->spies; 03536 clone->spies = spy_list; 03537 03538 /* Update channel on respective spy lists if present */ 03539 if (original->spies) { 03540 AST_LIST_TRAVERSE(&original->spies->list, spy, list) { 03541 ast_mutex_lock(&spy->lock); 03542 spy->chan = original; 03543 ast_mutex_unlock(&spy->lock); 03544 } 03545 } 03546 if (clone->spies) { 03547 AST_LIST_TRAVERSE(&clone->spies->list, spy, list) { 03548 ast_mutex_lock(&spy->lock); 03549 spy->chan = clone; 03550 ast_mutex_unlock(&spy->lock); 03551 } 03552 } 03553 03554 /* Save any pending frames on both sides. Start by counting 03555 * how many we're going to need... */ 03556 x = 0; 03557 if (original->alertpipe[1] > -1) { 03558 AST_LIST_TRAVERSE(&clone->readq, cur, frame_list) 03559 x++; 03560 } 03561 03562 /* If we had any, prepend them to the ones already in the queue, and 03563 * load up the alertpipe */ 03564 if (AST_LIST_FIRST(&clone->readq)) { 03565 AST_LIST_INSERT_TAIL(&clone->readq, AST_LIST_FIRST(&original->readq), frame_list); 03566 AST_LIST_HEAD_SET_NOLOCK(&original->readq, AST_LIST_FIRST(&clone->readq)); 03567 AST_LIST_HEAD_SET_NOLOCK(&clone->readq, NULL); 03568 for (i = 0; i < x; i++) 03569 write(original->alertpipe[1], &x, sizeof(x)); 03570 } 03571 03572 clone->_softhangup = AST_SOFTHANGUP_DEV; 03573 03574 03575 /* And of course, so does our current state. Note we need not 03576 call ast_setstate since the event manager doesn't really consider 03577 these separate. We do this early so that the clone has the proper 03578 state of the original channel. */ 03579 origstate = original->_state; 03580 original->_state = clone->_state; 03581 clone->_state = origstate; 03582 03583 if (clone->tech->fixup){ 03584 res = clone->tech->fixup(original, clone); 03585 if (res) 03586 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 03587 } 03588 03589 /* Start by disconnecting the original's physical side */ 03590 if (clone->tech->hangup) 03591 res = clone->tech->hangup(clone); 03592 if (res) { 03593 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 03594 ast_channel_unlock(clone); 03595 return -1; 03596 } 03597 03598 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 03599 /* Mangle the name of the clone channel */ 03600 ast_string_field_set(clone, name, zombn); 03601 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 03602 03603 /* Update the type. */ 03604 t_pvt = original->monitor; 03605 original->monitor = clone->monitor; 03606 clone->monitor = t_pvt; 03607 03608 /* Keep the same language. */ 03609 ast_string_field_set(original, language, clone->language); 03610 /* Copy the FD's other than the generator fd */ 03611 for (x = 0; x < AST_MAX_FDS; x++) { 03612 if (x != AST_GENERATOR_FD) 03613 original->fds[x] = clone->fds[x]; 03614 } 03615 03616 ast_app_group_update(clone, original); 03617 03618 /* move any whisperer over */ 03619 ast_channel_whisper_stop(original); 03620 if (ast_test_flag(clone, AST_FLAG_WHISPER)) { 03621 original->whisper = clone->whisper; 03622 ast_set_flag(original, AST_FLAG_WHISPER); 03623 clone->whisper = NULL; 03624 ast_clear_flag(clone, AST_FLAG_WHISPER); 03625 } 03626 03627 /* Move data stores over */ 03628 if (AST_LIST_FIRST(&clone->datastores)) 03629 AST_LIST_INSERT_TAIL(&original->datastores, AST_LIST_FIRST(&clone->datastores), entry); 03630 AST_LIST_HEAD_INIT_NOLOCK(&clone->datastores); 03631 03632 clone_variables(original, clone); 03633 AST_LIST_HEAD_INIT_NOLOCK(&clone->varshead); 03634 /* Presense of ADSI capable CPE follows clone */ 03635 original->adsicpe = clone->adsicpe; 03636 /* Bridge remains the same */ 03637 /* CDR fields remain the same */ 03638 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 03639 /* Application and data remain the same */ 03640 /* Clone exception becomes real one, as with fdno */ 03641 ast_copy_flags(original, clone, AST_FLAG_EXCEPTION); 03642 original->fdno = clone->fdno; 03643 /* Schedule context remains the same */ 03644 /* Stream stuff stays the same */ 03645 /* Keep the original state. The fixup code will need to work with it most likely */ 03646 03647 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 03648 out. */ 03649 tmpcid = original->cid; 03650 original->cid = clone->cid; 03651 clone->cid = tmpcid; 03652 03653 /* Restore original timing file descriptor */ 03654 original->fds[AST_TIMING_FD] = original->timingfd; 03655 03656 /* Our native formats are different now */ 03657 original->nativeformats = clone->nativeformats; 03658 03659 /* Context, extension, priority, app data, jump table, remain the same */ 03660 /* pvt switches. pbx stays the same, as does next */ 03661 03662 /* Set the write format */ 03663 ast_set_write_format(original, wformat); 03664 03665 /* Set the read format */ 03666 ast_set_read_format(original, rformat); 03667 03668 /* Copy the music class */ 03669 ast_string_field_set(original, musicclass, clone->musicclass); 03670 03671 if (option_debug) 03672 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 03673 03674 /* Okay. Last thing is to let the channel driver know about all this mess, so he 03675 can fix up everything as best as possible */ 03676 if (original->tech->fixup) { 03677 res = original->tech->fixup(clone, original); 03678 if (res) { 03679 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 03680 original->tech->type, original->name); 03681 ast_channel_unlock(clone); 03682 return -1; 03683 } 03684 } else 03685 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 03686 original->tech->type, original->name); 03687 03688 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 03689 a zombie so nothing tries to touch it. If it's already been marked as a 03690 zombie, then free it now (since it already is considered invalid). */ 03691 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 03692 if (option_debug) 03693 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 03694 ast_channel_unlock(clone); 03695 manager_event(EVENT_FLAG_CALL, "Hangup", 03696 "Channel: %s\r\n" 03697 "Uniqueid: %s\r\n" 03698 "Cause: %d\r\n" 03699 "Cause-txt: %s\r\n", 03700 clone->name, 03701 clone->uniqueid, 03702 clone->hangupcause, 03703 ast_cause2str(clone->hangupcause) 03704 ); 03705 ast_channel_free(clone); 03706 } else { 03707 if (option_debug) 03708 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 03709 ast_set_flag(clone, AST_FLAG_ZOMBIE); 03710 ast_queue_frame(clone, &ast_null_frame); 03711 ast_channel_unlock(clone); 03712 } 03713 03714 /* Signal any blocker */ 03715 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 03716 pthread_kill(original->blocker, SIGURG); 03717 if (option_debug) 03718 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 03719 return 0; 03720 }
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 3825 of file channel.c.
References AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_RETRY, ast_jb_do_usecheck(), config, f, ast_channel::nativeformats, and ast_channel::tech_pvt.
Referenced by ast_channel_bridge().
03828 { 03829 /* Copy voice back and forth between the two channels. */ 03830 struct ast_channel *cs[3]; 03831 struct ast_frame *f; 03832 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 03833 int o0nativeformats; 03834 int o1nativeformats; 03835 int watch_c0_dtmf; 03836 int watch_c1_dtmf; 03837 void *pvt0, *pvt1; 03838 /* Indicates whether a frame was queued into a jitterbuffer */ 03839 int frame_put_in_jb = 0; 03840 int jb_in_use; 03841 int to; 03842 03843 cs[0] = c0; 03844 cs[1] = c1; 03845 pvt0 = c0->tech_pvt; 03846 pvt1 = c1->tech_pvt; 03847 o0nativeformats = c0->nativeformats; 03848 o1nativeformats = c1->nativeformats; 03849 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 03850 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 03851 03852 /* Check the need of a jitterbuffer for each channel */ 03853 jb_in_use = ast_jb_do_usecheck(c0, c1); 03854 03855 for (;;) { 03856 struct ast_channel *who, *other; 03857 03858 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 03859 (o0nativeformats != c0->nativeformats) || 03860 (o1nativeformats != c1->nativeformats)) { 03861 /* Check for Masquerade, codec changes, etc */ 03862 res = AST_BRIDGE_RETRY; 03863 break; 03864 } 03865 if (bridge_end.tv_sec) { 03866 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 03867 if (to <= 0) { 03868 if (config->timelimit) 03869 res = AST_BRIDGE_RETRY; 03870 else 03871 res = AST_BRIDGE_COMPLETE; 03872 break; 03873 } 03874 } else 03875 to = -1; 03876 /* Calculate the appropriate max sleep interval - in general, this is the time, 03877 left to the closest jb delivery moment */ 03878 if (jb_in_use) 03879 to = ast_jb_get_when_to_wakeup(c0, c1, to); 03880 who = ast_waitfor_n(cs, 2, &to); 03881 if (!who) { 03882 /* No frame received within the specified timeout - check if we have to deliver now */ 03883 if (jb_in_use) 03884 ast_jb_get_and_deliver(c0, c1); 03885 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) { 03886 if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03887 c0->_softhangup = 0; 03888 if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) 03889 c1->_softhangup = 0; 03890 c0->_bridge = c1; 03891 c1->_bridge = c0; 03892 } 03893 continue; 03894 } 03895 f = ast_read(who); 03896 if (!f) { 03897 *fo = NULL; 03898 *rc = who; 03899 if (option_debug) 03900 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 03901 break; 03902 } 03903 03904 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 03905 /* Try add the frame info the who's bridged channel jitterbuff */ 03906 if (jb_in_use) 03907 frame_put_in_jb = !ast_jb_put(other, f); 03908 03909 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 03910 int bridge_exit = 0; 03911 03912 switch (f->subclass) { 03913 case AST_CONTROL_HOLD: 03914 case AST_CONTROL_UNHOLD: 03915 case AST_CONTROL_VIDUPDATE: 03916 ast_indicate_data(other, f->subclass, f->data, f->datalen); 03917 break; 03918 default: 03919 *fo = f; 03920 *rc = who; 03921 bridge_exit = 1; 03922 if (option_debug) 03923 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 03924 break; 03925 } 03926 if (bridge_exit) 03927 break; 03928 } 03929 if ((f->frametype == AST_FRAME_VOICE) || 03930 (f->frametype == AST_FRAME_DTMF_BEGIN) || 03931 (f->frametype == AST_FRAME_DTMF) || 03932 (f->frametype == AST_FRAME_VIDEO) || 03933 (f->frametype == AST_FRAME_IMAGE) || 03934 (f->frametype == AST_FRAME_HTML) || 03935 (f->frametype == AST_FRAME_MODEM) || 03936 (f->frametype == AST_FRAME_TEXT)) { 03937 /* monitored dtmf causes exit from bridge */ 03938 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 03939 03940 if (monitored_source && 03941 (f->frametype == AST_FRAME_DTMF_END || 03942 f->frametype == AST_FRAME_DTMF_BEGIN)) { 03943 *fo = f; 03944 *rc = who; 03945 if (option_debug) 03946 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 03947 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 03948 who->name); 03949 break; 03950 } 03951 /* Write immediately frames, not passed through jb */ 03952 if (!frame_put_in_jb) 03953 ast_write(other, f); 03954 03955 /* Check if we have to deliver now */ 03956 if (jb_in_use) 03957 ast_jb_get_and_deliver(c0, c1); 03958 } 03959 /* XXX do we want to pass on also frames not matched above ? */ 03960 ast_frfree(f); 03961 03962 /* Swap who gets priority */ 03963 cs[2] = cs[0]; 03964 cs[0] = cs[1]; 03965 cs[1] = cs[2]; 03966 } 03967 return res; 03968 }
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 1101 of file channel.c.
References channel_find_locked().
01102 { 01103 return channel_find_locked(NULL, NULL, 0, context, exten); 01104 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1082 of file channel.c.
References channel_find_locked().
Referenced by action_getvar(), action_hangup(), action_redirect(), action_setcdruserfield(), action_setvar(), action_status(), action_timeout(), ast_async_goto_by_name(), asyncgoto_exec(), change_monitor_action(), do_pause_or_unpause(), get_zap_channel_locked(), handle_channelstatus(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_getvariablefull(), handle_hangup(), handle_nodebugchan_deprecated(), handle_showchan(), handle_showchan_deprecated(), handle_softhangup(), manager_park(), manager_play_dtmf(), pbx_builtin_importvar(), start_monitor_action(), and stop_monitor_action().
01083 { 01084 return channel_find_locked(NULL, name, 0, NULL, NULL); 01085 }
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 1088 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01089 { 01090 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01091 }
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 563 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), LOG_WARNING, chanlist::tech, and ast_channel_tech::type.
Referenced by ast_device_state().
00564 { 00565 struct chanlist *chanls; 00566 const struct ast_channel_tech *ret = NULL; 00567 00568 if (AST_LIST_LOCK(&channels)) { 00569 ast_log(LOG_WARNING, "Unable to lock channel tech list\n"); 00570 return NULL; 00571 } 00572 00573 AST_LIST_TRAVERSE(&backends, chanls, list) { 00574 if (!strcasecmp(name, chanls->tech->type)) { 00575 ret = chanls->tech; 00576 break; 00577 } 00578 } 00579 00580 AST_LIST_UNLOCK(&channels); 00581 00582 return ret; 00583 }
ast_group_t ast_get_group | ( | const char * | s | ) |
Definition at line 4397 of file channel.c.
References ast_log(), ast_strdupa, group, LOG_ERROR, LOG_WARNING, and strsep().
Referenced by _parse(), build_device(), build_gateway(), build_peer(), func_channel_write(), process_zap(), and read_agent_config().
04398 { 04399 char *piece; 04400 char *c; 04401 int start=0, finish=0, x; 04402 ast_group_t group = 0; 04403 04404 c = ast_strdupa(s); 04405 04406 while ((piece = strsep(&c, ","))) { 04407 if (sscanf(piece, "%d-%d", &start, &finish) == 2) { 04408 /* Range */ 04409 } else if (sscanf(piece, "%d", &start)) { 04410 /* Just one */ 04411 finish = start; 04412 } else { 04413 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 04414 continue; 04415 } 04416 for (x = start; x <= finish; x++) { 04417 if ((x > 63) || (x < 0)) { 04418 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 04419 } else 04420 group |= ((ast_group_t) 1 << x); 04421 } 04422 } 04423 return group; 04424 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1667 of file channel.c.
References ast_cause2str(), ast_cdr_detach(), ast_cdr_end(), ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_closestream(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_ZOMBIE, ast_log(), ast_set_flag, ast_test_flag, ast_channel::blocker, ast_channel::blockproc, ast_channel::cdr, CRASH, detach_spies(), EVENT_FLAG_CALL, free_translation(), ast_channel::generator, ast_channel::generatordata, ast_channel_tech::hangup, ast_channel::hangupcause, LOG_DEBUG, LOG_WARNING, manager_event(), ast_channel::masq, ast_channel::masqr, option_debug, ast_generator::release, ast_channel::sched, sched_context_destroy(), ast_channel::stream, ast_channel::tech, and ast_channel::vstream.
Referenced by __ast_request_and_dial(), __oh323_new(), agent_hangup(), agent_read(), alsa_new(), app_exec(), ast_async_goto(), ast_bridge_call_thread(), ast_dial_destroy(), ast_dial_hangup(), ast_feature_request_and_dial(), ast_iax2_new(), ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_pbx_run_app(), async_wait(), begin_dial(), build_conf(), builtin_atxfer(), chanavail_exec(), check_compat(), check_goto_on_transfer(), clear_caller(), conf_free(), conf_run(), do_hang(), do_parking_thread(), features_hangup(), findmeexec(), function_ilink(), gtalk_new(), handle_frame(), handle_frame_ownerless(), handle_hd_hf(), handle_init_event(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_soft_key_event_message(), handle_stimulus_message(), hangup_chan(), hangupcalls(), hanguptree(), iax2_request(), iax_park(), iax_park_thread(), local_attended_transfer(), local_hangup(), mgcp_new(), mgcp_ss(), monitor_dial(), nbs_new(), oss_new(), park_exec(), parkandannounce_exec(), phone_new(), rpt(), rpt_call(), rpt_exec(), rpt_tele_thread(), sip_new(), sip_park(), sip_park_thread(), skinny_new(), skinny_ss(), ss_thread(), try_calling(), wait_for_answer(), wait_for_winner(), zt_handle_event(), and zt_new().
01668 { 01669 int res = 0; 01670 01671 /* Don't actually hang up a channel that will masquerade as someone else, or 01672 if someone is going to masquerade as us */ 01673 ast_channel_lock(chan); 01674 01675 detach_spies(chan); /* get rid of spies */ 01676 01677 if (chan->masq) { 01678 if (ast_do_masquerade(chan)) 01679 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01680 } 01681 01682 if (chan->masq) { 01683 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01684 ast_channel_unlock(chan); 01685 return 0; 01686 } 01687 /* If this channel is one which will be masqueraded into something, 01688 mark it as a zombie already, so we know to free it later */ 01689 if (chan->masqr) { 01690 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01691 ast_channel_unlock(chan); 01692 return 0; 01693 } 01694 free_translation(chan); 01695 /* Close audio stream */ 01696 if (chan->stream) { 01697 ast_closestream(chan->stream); 01698 chan->stream = NULL; 01699 } 01700 /* Close video stream */ 01701 if (chan->vstream) { 01702 ast_closestream(chan->vstream); 01703 chan->vstream = NULL; 01704 } 01705 if (chan->sched) { 01706 sched_context_destroy(chan->sched); 01707 chan->sched = NULL; 01708 } 01709 01710 if (chan->generatordata) /* Clear any tone stuff remaining */ 01711 chan->generator->release(chan, chan->generatordata); 01712 chan->generatordata = NULL; 01713 chan->generator = NULL; 01714 if (chan->cdr) { /* End the CDR if it hasn't already */ 01715 ast_cdr_end(chan->cdr); 01716 ast_cdr_detach(chan->cdr); /* Post and Free the CDR */ 01717 chan->cdr = NULL; 01718 } 01719 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01720 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01721 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01722 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01723 CRASH; 01724 } 01725 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01726 if (option_debug) 01727 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01728 if (chan->tech->hangup) 01729 res = chan->tech->hangup(chan); 01730 } else { 01731 if (option_debug) 01732 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01733 } 01734 01735 ast_channel_unlock(chan); 01736 manager_event(EVENT_FLAG_CALL, "Hangup", 01737 "Channel: %s\r\n" 01738 "Uniqueid: %s\r\n" 01739 "Cause: %d\r\n" 01740 "Cause-txt: %s\r\n", 01741 chan->name, 01742 chan->uniqueid, 01743 chan->hangupcause, 01744 ast_cause2str(chan->hangupcause) 01745 ); 01746 ast_channel_free(chan); 01747 return res; 01748 }
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 2484 of file channel.c.
References ast_indicate_data().
Referenced by __ast_play_and_record(), agent_new(), ast_bridge_call(), ast_dtmf_stream(), ast_feature_request_and_dial(), attempt_transfer(), builtin_atxfer(), builtin_blindtransfer(), conf_run(), disa_exec(), do_parking_thread(), features_indicate(), finishup(), function_remote(), handle_frame(), handle_recordfile(), handle_remote_data(), handle_remote_phone_dtmf(), mgcp_ss(), monitor_dial(), park_exec(), pbx_builtin_busy(), pbx_builtin_congestion(), pbx_builtin_progress(), pbx_builtin_ringing(), pbx_builtin_waitexten(), queue_exec(), rmt_telem_finish(), rmt_telem_start(), rpt(), rpt_exec(), send_waveform_to_channel(), skinny_ss(), sla_handle_hold_event(), sla_station_exec(), sla_trunk_exec(), and wait_for_answer().
02485 { 02486 return ast_indicate_data(chan, condition, NULL, 0); 02487 }
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 2489 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_FLAG_ZOMBIE, ast_get_indication_tone(), ast_log(), ast_playtones_start(), ast_playtones_stop(), ast_test_flag, tone_zone_sound::data, ast_channel_tech::indicate, LOG_DEBUG, LOG_WARNING, option_debug, ast_channel::tech, and ast_channel::zone.
Referenced by __login_exec(), agent_hangup(), ast_indicate(), ast_park_call(), bridge_native_loop(), bridge_p2p_loop(), do_parking_thread(), pbx_builtin_waitexten(), and wait_for_answer().
02490 { 02491 int res = -1; 02492 02493 ast_channel_lock(chan); 02494 /* Stop if we're a zombie or need a soft hangup */ 02495 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02496 ast_channel_unlock(chan); 02497 return -1; 02498 } 02499 if (chan->tech->indicate) 02500 res = chan->tech->indicate(chan, condition, data, datalen); 02501 ast_channel_unlock(chan); 02502 if (!chan->tech->indicate || res) { 02503 /* 02504 * Device does not support (that) indication, lets fake 02505 * it by doing our own tone generation. (PM2002) 02506 */ 02507 if (condition < 0) 02508 ast_playtones_stop(chan); 02509 else { 02510 const struct tone_zone_sound *ts = NULL; 02511 switch (condition) { 02512 case AST_CONTROL_RINGING: 02513 ts = ast_get_indication_tone(chan->zone, "ring"); 02514 break; 02515 case AST_CONTROL_BUSY: 02516 ts = ast_get_indication_tone(chan->zone, "busy"); 02517 break; 02518 case AST_CONTROL_CONGESTION: 02519 ts = ast_get_indication_tone(chan->zone, "congestion"); 02520 break; 02521 } 02522 if (ts && ts->data[0]) { 02523 if (option_debug) 02524 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02525 ast_playtones_start(chan,0,ts->data, 1); 02526 res = 0; 02527 } else if (condition == AST_CONTROL_PROGRESS) { 02528 /* ast_playtones_stop(chan); */ 02529 } else if (condition == AST_CONTROL_PROCEEDING) { 02530 /* Do nothing, really */ 02531 } else if (condition == AST_CONTROL_HOLD) { 02532 /* Do nothing.... */ 02533 } else if (condition == AST_CONTROL_UNHOLD) { 02534 /* Do nothing.... */ 02535 } else if (condition == AST_CONTROL_VIDUPDATE) { 02536 /* Do nothing.... */ 02537 } else { 02538 /* not handled */ 02539 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02540 res = -1; 02541 } 02542 } 02543 } 02544 return res; 02545 }
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 4430 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
04433 { 04434 ast_moh_start_ptr = start_ptr; 04435 ast_moh_stop_ptr = stop_ptr; 04436 ast_moh_cleanup_ptr = cleanup_ptr; 04437 }
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 2466 of file channel.c.
References ast_log(), ast_opt_internal_timing, LOG_DEBUG, option_debug, and ast_channel::timingfd.
Referenced by __ast_read(), and add_sdp().
02467 { 02468 int ret = ast_opt_internal_timing && chan->timingfd > -1; 02469 if (option_debug > 4) 02470 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); 02471 return ret; 02472 }
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 4467 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
04468 { 04469 if (ast_moh_cleanup_ptr) 04470 ast_moh_cleanup_ptr(chan); 04471 }
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 4447 of file channel.c.
References ast_moh_start_ptr, ast_verbose(), option_verbose, and VERBOSE_PREFIX_3.
Referenced by alsa_indicate(), app_exec(), conf_run(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), moh0_exec(), moh1_exec(), moh3_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), skinny_indicate(), and zt_indicate().
04448 { 04449 if (ast_moh_start_ptr) 04450 return ast_moh_start_ptr(chan, mclass, interpclass); 04451 04452 if (option_verbose > 2) { 04453 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 04454 mclass ? mclass : (interpclass ? interpclass : "default")); 04455 } 04456 04457 return 0; 04458 }
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 4461 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), conf_run(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), misdn_transfer_bc(), moh0_exec(), moh1_exec(), moh4_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), skinny_indicate(), try_calling(), and zt_indicate().
04462 { 04463 if (ast_moh_stop_ptr) 04464 ast_moh_stop_ptr(chan); 04465 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 4479 of file channel.c.
Referenced by _sip_show_peer(), func_channel_read(), misdn_cfg_get_config_string(), print_group(), read_config(), and serialize_showchan().
04480 { 04481 unsigned int i; 04482 int first=1; 04483 char num[3]; 04484 04485 buf[0] = '\0'; 04486 04487 if (!group) /* Return empty string if no group */ 04488 return buf; 04489 04490 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 04491 if (group & ((ast_group_t) 1 << i)) { 04492 if (!first) { 04493 strncat(buf, ", ", buflen); 04494 } else { 04495 first=0; 04496 } 04497 snprintf(num, sizeof(num), "%u", i); 04498 strncat(buf, num, buflen); 04499 } 04500 } 04501 return buf; 04502 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2667 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().
02668 { 02669 struct ast_frame a = { AST_FRAME_VOICE }; 02670 char nothing[128]; 02671 02672 /* Send an empty audio frame to get things moving */ 02673 if (chan->_state != AST_STATE_UP) { 02674 if (option_debug) 02675 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 02676 a.subclass = chan->rawwriteformat; 02677 a.data = nothing + AST_FRIENDLY_OFFSET; 02678 a.src = "ast_prod"; 02679 if (ast_write(chan, &a)) 02680 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 02681 } 02682 return 0; 02683 }
int ast_queue_control | ( | struct ast_channel * | chan, | |
enum ast_control_frame_type | control | |||
) |
Queue a control frame with payload.
chan | channel to queue frame onto | |
control | type of control frame |
Definition at line 951 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by __oh323_update_info(), __zt_exception(), ast_pickup_call(), attempt_transfer(), auto_congest(), gtalk_is_answered(), gtalk_ringing_ack(), handle_hd_hf(), handle_offhook_message(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_refer(), handle_response(), handle_response_invite(), handle_response_refer(), handle_soft_key_event_message(), handle_stimulus_message(), mgcp_call(), nbs_call(), phone_call(), pickup_do(), process_sdp(), receive_digit(), send_cause2ast(), setup_rtp_connection(), skinny_call(), skinny_unhold(), socket_process(), ss_thread(), update_state(), zt_handle_event(), and zt_hangup().
00952 { 00953 struct ast_frame f = { AST_FRAME_CONTROL, }; 00954 00955 f.subclass = control; 00956 00957 return ast_queue_frame(chan, &f); 00958 }
int ast_queue_control_data | ( | struct ast_channel * | chan, | |
enum ast_control_frame_type | control, | |||
const void * | data, | |||
size_t | datalen | |||
) |
Queue a control frame with payload.
chan | channel to queue frame onto | |
control | type of control frame | |
data | pointer to payload data to be included in frame | |
datalen | number of bytes of payload data |
Definition at line 961 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by process_sdp(), skinny_hold(), socket_process(), zt_handle_event(), and zt_hangup().
00963 { 00964 struct ast_frame f = { AST_FRAME_CONTROL, }; 00965 00966 f.subclass = control; 00967 f.data = (void *) data; 00968 f.datalen = datalen; 00969 00970 return ast_queue_frame(chan, &f); 00971 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin | |||
) |
Queue an outgoing frame.
Definition at line 883 of file channel.c.
References ast_channel::alertpipe, ast_channel_lock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FLAG_BLOCKING, AST_FRAME_CONTROL, AST_FRAME_VOICE, ast_frdup(), ast_frfree(), AST_LIST_INSERT_TAIL, AST_LIST_LAST, AST_LIST_TRAVERSE, ast_log(), ast_test_flag, ast_channel::blocker, CRASH, 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_channel_masquerade(), ast_channel_setwhentohangup(), ast_dsp_process(), ast_queue_control(), ast_queue_control_data(), ast_queue_hangup(), ast_softhangup_nolock(), cb_events(), console_answer(), console_answer_deprecated(), console_dial(), console_dial_deprecated(), console_flash(), console_flash_deprecated(), console_sendtext(), console_sendtext_deprecated(), dictate_exec(), do_immediate_setup(), gtalk_handle_dtmf(), handle_keypad_button_message(), handle_request_info(), handle_request_invite(), handle_response_invite(), iax2_queue_frame(), local_queue_frame(), mgcp_queue_frame(), oh323_simulate_dtmf_end(), oss_call(), process_sdp(), receive_digit(), receive_message(), wakeup_sub(), and zap_queue_frame().
00884 { 00885 struct ast_frame *f; 00886 struct ast_frame *cur; 00887 int blah = 1; 00888 int qlen = 0; 00889 00890 /* Build us a copy and free the original one */ 00891 if (!(f = ast_frdup(fin))) { 00892 ast_log(LOG_WARNING, "Unable to duplicate frame\n"); 00893 return -1; 00894 } 00895 ast_channel_lock(chan); 00896 00897 /* See if the last frame on the queue is a hangup, if so don't queue anything */ 00898 if ((cur = AST_LIST_LAST(&chan->readq)) && (cur->frametype == AST_FRAME_CONTROL) && (cur->subclass == AST_CONTROL_HANGUP)) { 00899 ast_frfree(f); 00900 ast_channel_unlock(chan); 00901 return 0; 00902 } 00903 00904 /* Count how many frames exist on the queue */ 00905 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00906 qlen++; 00907 } 00908 00909 /* Allow up to 96 voice frames outstanding, and up to 128 total frames */ 00910 if (((fin->frametype == AST_FRAME_VOICE) && (qlen > 96)) || (qlen > 128)) { 00911 if (fin->frametype != AST_FRAME_VOICE) { 00912 ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name); 00913 CRASH; 00914 } else { 00915 if (option_debug) 00916 ast_log(LOG_DEBUG, "Dropping voice to exceptionally long queue on %s\n", chan->name); 00917 ast_frfree(f); 00918 ast_channel_unlock(chan); 00919 return 0; 00920 } 00921 } 00922 AST_LIST_INSERT_TAIL(&chan->readq, f, frame_list); 00923 if (chan->alertpipe[1] > -1) { 00924 if (write(chan->alertpipe[1], &blah, sizeof(blah)) != sizeof(blah)) 00925 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s, frametype/subclass %d/%d (qlen = %d): %s!\n", 00926 chan->name, f->frametype, f->subclass, qlen, strerror(errno)); 00927 #ifdef HAVE_ZAPTEL 00928 } else if (chan->timingfd > -1) { 00929 ioctl(chan->timingfd, ZT_TIMERPING, &blah); 00930 #endif 00931 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 00932 pthread_kill(chan->blocker, SIGURG); 00933 } 00934 ast_channel_unlock(chan); 00935 return 0; 00936 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 939 of file channel.c.
References ast_channel::_softhangup, ast_channel_trylock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FRAME_CONTROL, ast_queue_frame(), AST_SOFTHANGUP_DEV, and f.
Referenced by __oh323_update_info(), __sip_autodestruct(), cleanup_connection(), console_hangup(), console_hangup_deprecated(), gtalk_hangup_farend(), handle_onhook_message(), handle_request_bye(), handle_request_cancel(), handle_response(), handle_response_invite(), handle_soft_key_event_message(), hangup_chan(), hangup_connection(), iax2_destroy(), iax2_predestroy(), mgcp_queue_hangup(), misdn_answer(), retrans_pkt(), and zt_handle_event().
00940 { 00941 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 00942 /* Yeah, let's not change a lock-critical value without locking */ 00943 if (!ast_channel_trylock(chan)) { 00944 chan->_softhangup |= AST_SOFTHANGUP_DEV; 00945 ast_channel_unlock(chan); 00946 } 00947 return ast_queue_frame(chan, &f); 00948 }
struct ast_frame* ast_read | ( | struct ast_channel * | chan | ) |
Reads a frame.
chan | channel to read a frame from |
Definition at line 2474 of file channel.c.
References __ast_read().
Referenced by __adsi_transmit_messages(), __ast_play_and_record(), __ast_request_and_dial(), adsi_careful_send(), agent_ack_sleep(), agent_read(), app_exec(), ast_feature_request_and_dial(), ast_masq_park_call(), ast_recvtext(), ast_safe_sleep_conditional(), ast_tonepair(), ast_udptl_bridge(), ast_waitfordigit_full(), async_wait(), autoservice_run(), background_detect_exec(), bridge_native_loop(), bridge_p2p_loop(), builtin_atxfer(), channel_spy(), check_goto_on_transfer(), conf_exec(), conf_flush(), conf_run(), dictate_exec(), disa_exec(), do_parking_thread(), do_waiting(), echo_exec(), features_read(), find_cache(), handle_invite_replaces(), handle_recordfile(), iax_park_thread(), ices_exec(), isAnsweringMachine(), measurenoise(), misdn_bridge(), monitor_dial(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), nv_background_detect_exec(), nv_detectfax_exec(), receive_dtmf_digits(), recordthread(), rpt(), run_agi(), rxfax_exec(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), txfax_exec(), wait_for_answer(), wait_for_hangup(), wait_for_winner(), waitforring_exec(), waitstream_core(), and zt_bridge().
02475 { 02476 return __ast_read(chan, 0); 02477 }
struct ast_frame* ast_read_noaudio | ( | struct ast_channel * | chan | ) |
Reads a frame, returning AST_FRAME_NULL frame if audio.
chan | channel to read a frame from |
Definition at line 2479 of file channel.c.
References __ast_read().
Referenced by conf_run().
02480 { 02481 return __ast_read(chan, 1); 02482 }
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 3181 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().
03182 { 03183 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03184 }
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 3186 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().
03187 { 03188 int pos = 0; /* index in the buffer where we accumulate digits */ 03189 int to = ftimeout; 03190 03191 /* Stop if we're a zombie or need a soft hangup */ 03192 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03193 return -1; 03194 if (!len) 03195 return -1; 03196 for (;;) { 03197 int d; 03198 if (c->stream) { 03199 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03200 ast_stopstream(c); 03201 usleep(1000); 03202 if (!d) 03203 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03204 } else { 03205 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03206 } 03207 if (d < 0) 03208 return -1; 03209 if (d == 0) { 03210 s[pos]='\0'; 03211 return 1; 03212 } 03213 if (d == 1) { 03214 s[pos]='\0'; 03215 return 2; 03216 } 03217 if (!strchr(enders, d)) 03218 s[pos++] = d; 03219 if (strchr(enders, d) || (pos >= len)) { 03220 s[pos]='\0'; 03221 return 0; 03222 } 03223 to = timeout; 03224 } 03225 /* Never reached */ 03226 return 0; 03227 }
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 2547 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02548 { 02549 int c; 02550 char *buf = ast_recvtext(chan, timeout); 02551 if (buf == NULL) 02552 return -1; /* error or timeout */ 02553 c = *(unsigned char *)buf; 02554 free(buf); 02555 return c; 02556 }
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 2558 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().
02559 { 02560 int res, done = 0; 02561 char *buf = NULL; 02562 02563 while (!done) { 02564 struct ast_frame *f; 02565 if (ast_check_hangup(chan)) 02566 break; 02567 res = ast_waitfor(chan, timeout); 02568 if (res <= 0) /* timeout or error */ 02569 break; 02570 timeout = res; /* update timeout */ 02571 f = ast_read(chan); 02572 if (f == NULL) 02573 break; /* no frame */ 02574 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02575 done = 1; /* force a break */ 02576 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02577 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02578 done = 1; 02579 } 02580 ast_frfree(f); 02581 } 02582 return buf; 02583 }
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 3090 of file channel.c.
References 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, 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(), ast_request_inherit(), attempt_reconnect(), begin_dial(), build_conf(), chanavail_exec(), conf_run(), features_alloc(), findmeexec(), function_ilink(), ring_entry(), rpt(), rpt_call(), rpt_exec(), rpt_tele_thread(), and wait_for_answer().
03091 { 03092 struct chanlist *chan; 03093 struct ast_channel *c; 03094 int capabilities; 03095 int fmt; 03096 int res; 03097 int foo; 03098 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03099 03100 if (!cause) 03101 cause = &foo; 03102 *cause = AST_CAUSE_NOTDEFINED; 03103 03104 if (AST_LIST_LOCK(&channels)) { 03105 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03106 return NULL; 03107 } 03108 03109 AST_LIST_TRAVERSE(&backends, chan, list) { 03110 if (strcasecmp(type, chan->tech->type)) 03111 continue; 03112 03113 capabilities = chan->tech->capabilities; 03114 fmt = format & AST_FORMAT_AUDIO_MASK; 03115 res = ast_translator_best_choice(&fmt, &capabilities); 03116 if (res < 0) { 03117 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03118 AST_LIST_UNLOCK(&channels); 03119 return NULL; 03120 } 03121 AST_LIST_UNLOCK(&channels); 03122 if (!chan->tech->requester) 03123 return NULL; 03124 03125 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03126 return NULL; 03127 03128 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03129 return c; 03130 } 03131 03132 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03133 *cause = AST_CAUSE_NOSUCHDRIVER; 03134 AST_LIST_UNLOCK(&channels); 03135 03136 return NULL; 03137 }
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 3085 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
03086 { 03087 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 03088 }
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 1135 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(), function_remote(), handle_remote_data(), handle_remote_phone_dtmf(), milliwatt_exec(), moh0_exec(), moh1_exec(), park_call_exec(), pbx_builtin_answer(), pbx_builtin_wait(), play_tone_pair(), playtone(), privacy_exec(), receive_ademco_contact_id(), rmt_telem_start(), rpt_call(), rpt_exec(), rpt_tele_thread(), send_morse(), send_tone_telemetry(), skinny_ss(), ss_thread(), test1_client(), test1_server(), testclient_exec(), testserver_exec(), try_calling(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01136 { 01137 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01138 }
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 1114 of file channel.c.
References ast_frfree(), ast_read(), ast_waitfor(), and f.
Referenced by __login_exec(), and ast_safe_sleep().
01115 { 01116 struct ast_frame *f; 01117 01118 while (ms > 0) { 01119 if (cond && ((*cond)(data) == 0)) 01120 return 0; 01121 ms = ast_waitfor(chan, ms); 01122 if (ms < 0) 01123 return -1; 01124 if (ms > 0) { 01125 f = ast_read(chan); 01126 if (!f) 01127 return -1; 01128 ast_frfree(f); 01129 } 01130 } 01131 return 0; 01132 }
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 426 of file channel.c.
References ast_malloc, and len.
Referenced by features_new().
00427 { 00428 char *b2,buf[1]; 00429 int len; 00430 00431 va_list args; 00432 va_start(args, fmt); 00433 len = vsnprintf(buf, 1, fmt, args); 00434 b2 = ast_malloc(len+1); 00435 vsnprintf(b2, len+1, fmt, args); 00436 va_end(args); 00437 return b2; 00438 }
int ast_say_character_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4874 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().
04876 { 04877 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 04878 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4868 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().
04870 { 04871 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 04872 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4862 of file channel.c.
References ast_say_digits_full().
Referenced by ast_park_call(), common_exec(), conf_exec(), parkandannounce_exec(), and rpt_tele_thread().
04864 { 04865 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 04866 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 4886 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().
04888 { 04889 char buf[256]; 04890 04891 snprintf(buf, sizeof(buf), "%d", num); 04892 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 04893 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4856 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().
04858 { 04859 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 04860 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 4850 of file channel.c.
References ast_say_number_full.
Referenced by ast_say_date_da(), ast_say_date_de(), ast_say_date_en(), ast_say_date_fr(), ast_say_date_ge(), ast_say_date_gr(), ast_say_date_nl(), ast_say_date_pt(), ast_say_date_with_format_da(), ast_say_date_with_format_de(), ast_say_date_with_format_en(), ast_say_date_with_format_es(), ast_say_date_with_format_fr(), ast_say_date_with_format_it(), ast_say_date_with_format_nl(), ast_say_date_with_format_pl(), ast_say_date_with_format_pt(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_ge(), ast_say_datetime_from_now_pt(), ast_say_datetime_pt(), ast_say_datetime_tw(), ast_say_time_de(), ast_say_time_en(), ast_say_time_fr(), ast_say_time_ge(), ast_say_time_gr(), ast_say_time_nl(), ast_say_time_pt(), ast_say_time_pt_BR(), ast_say_time_tw(), bridge_playfile(), conf_exec(), conf_run(), count_exec(), dictate_exec(), get_folder(), gr_say_number_female(), pbx_builtin_saynumber(), play_message(), play_message_duration(), rpt_tele_thread(), say_and_wait(), say_position(), saynum(), try_calling(), vm_intro_gr(), vm_intro_pt(), and vm_intro_pt_BR().
04852 { 04853 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 04854 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 4880 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
04882 { 04883 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 04884 }
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 2657 of file channel.c.
References ast_safe_sleep(), ast_senddigit_begin(), ast_senddigit_end(), ast_channel_tech::send_digit_begin, and ast_channel::tech.
Referenced by ast_dtmf_stream(), and manager_play_dtmf().
02658 { 02659 if (chan->tech->send_digit_begin) { 02660 ast_senddigit_begin(chan, digit); 02661 ast_safe_sleep(chan, 100); /* XXX 100ms ... probably should be configurable */ 02662 } 02663 02664 return ast_senddigit_end(chan, digit, 100); 02665 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Send a DTMF digit to a channel Send a DTMF digit to a channel.
chan | channel to act upon | |
digit | the DTMF digit to send, encoded in ASCII |
Definition at line 2598 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().
02599 { 02600 /* Device does not support DTMF tones, lets fake 02601 * it by doing our own generation. */ 02602 static const char* dtmf_tones[] = { 02603 "941+1336", /* 0 */ 02604 "697+1209", /* 1 */ 02605 "697+1336", /* 2 */ 02606 "697+1477", /* 3 */ 02607 "770+1209", /* 4 */ 02608 "770+1336", /* 5 */ 02609 "770+1477", /* 6 */ 02610 "852+1209", /* 7 */ 02611 "852+1336", /* 8 */ 02612 "852+1477", /* 9 */ 02613 "697+1633", /* A */ 02614 "770+1633", /* B */ 02615 "852+1633", /* C */ 02616 "941+1633", /* D */ 02617 "941+1209", /* * */ 02618 "941+1477" /* # */ 02619 }; 02620 02621 if (!chan->tech->send_digit_begin) 02622 return 0; 02623 02624 if (!chan->tech->send_digit_begin(chan, digit)) 02625 return 0; 02626 02627 if (digit >= '0' && digit <='9') 02628 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02629 else if (digit >= 'A' && digit <= 'D') 02630 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02631 else if (digit == '*') 02632 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02633 else if (digit == '#') 02634 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02635 else { 02636 /* not handled */ 02637 if (option_debug) 02638 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02639 } 02640 02641 return 0; 02642 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Send a DTMF digit to a channel.
Send a DTMF digit to a channel.
chan | channel to act upon | |
digit | the DTMF digit to send, encoded in ASCII |
Definition at line 2644 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().
02645 { 02646 int res = -1; 02647 02648 if (chan->tech->send_digit_end) 02649 res = chan->tech->send_digit_end(chan, digit, duration); 02650 02651 if (res && chan->generator) 02652 ast_playtones_stop(chan); 02653 02654 return 0; 02655 }
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 2585 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().
02586 { 02587 int res = 0; 02588 /* Stop if we're a zombie or need a soft hangup */ 02589 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02590 return -1; 02591 CHECK_BLOCKING(chan); 02592 if (chan->tech->send_text) 02593 res = chan->tech->send_text(chan, text); 02594 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02595 return res; 02596 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | callerid, | |||
const char * | calleridname, | |||
const char * | ani | |||
) |
Definition at line 3722 of file channel.c.
References ast_cdr_setcid(), ast_describe_caller_presentation(), ast_strdup, ast_channel::cdr, ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_pres, EVENT_FLAG_CALL, free, manager_event(), and S_OR.
Referenced by __ast_request_and_dial(), agent_call(), ast_feature_request_and_dial(), callerid_write(), disa_exec(), findmeexec(), handle_setcallerid(), lookupcidname_exec(), mgcp_ss(), privacy_exec(), read_config(), rpt_exec(), setcallerid_exec(), skinny_newcall(), ss_thread(), wait_for_answer(), and zt_read().
03723 { 03724 if (callerid) { 03725 if (chan->cid.cid_num) 03726 free(chan->cid.cid_num); 03727 chan->cid.cid_num = ast_strdup(callerid); 03728 } 03729 if (calleridname) { 03730 if (chan->cid.cid_name) 03731 free(chan->cid.cid_name); 03732 chan->cid.cid_name = ast_strdup(calleridname); 03733 } 03734 if (ani) { 03735 if (chan->cid.cid_ani) 03736 free(chan->cid.cid_ani); 03737 chan->cid.cid_ani = ast_strdup(ani); 03738 } 03739 if (chan->cdr) 03740 ast_cdr_setcid(chan->cdr, chan); 03741 manager_event(EVENT_FLAG_CALL, "Newcallerid", 03742 "Channel: %s\r\n" 03743 "CallerID: %s\r\n" 03744 "CallerIDName: %s\r\n" 03745 "Uniqueid: %s\r\n" 03746 "CID-CallingPres: %d (%s)\r\n", 03747 chan->name, 03748 S_OR(chan->cid.cid_num, "<Unknown>"), 03749 S_OR(chan->cid.cid_name, "<Unknown>"), 03750 chan->uniqueid, 03751 chan->cid.cid_pres, 03752 ast_describe_caller_presentation(chan->cid.cid_pres) 03753 ); 03754 }
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 2949 of file channel.c.
References ast_channel::rawreadformat, ast_channel::readformat, ast_channel::readtrans, and set_format().
Referenced by __ast_play_and_record(), __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_formats_reset(), ast_channel_make_compatible(), ast_set_best_format(), attempt_reconnect(), background_detect_exec(), build_conf(), conf_run(), dictate_exec(), disa_exec(), do_waiting(), eagi_exec(), echo_exec(), function_ilink(), gtalk_rtp_read(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mgcp_rtp_read(), milliwatt_exec(), mwanalyze_exec(), nv_background_detect_exec(), nv_detectfax_exec(), oh323_rtp_read(), process_sdp(), rpt(), rpt_exec(), rxfax_exec(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), speech_background(), txfax_exec(), and update_features().
02950 { 02951 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 02952 &chan->readtrans, 0); 02953 }
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 4504 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().
04505 { 04506 struct ast_variable *cur; 04507 04508 for (cur = vars; cur; cur = cur->next) 04509 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 04510 }
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 2955 of file channel.c.
References ast_channel::rawwriteformat, set_format(), ast_channel::writeformat, and ast_channel::writetrans.
Referenced by __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_formats_reset(), ast_channel_make_compatible(), ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_channel_whisper_stop(), ast_openstream_full(), ast_set_best_format(), ast_stopstream(), ast_write(), attempt_reconnect(), build_conf(), channel_spy(), chanspy_exec(), conf_run(), disa_exec(), echo_exec(), extenspy_exec(), function_ilink(), gtalk_rtp_read(), linear_alloc(), linear_release(), mgcp_rtp_read(), milliwatt_exec(), moh_alloc(), moh_files_release(), moh_release(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), oh323_rtp_read(), playtones_alloc(), playtones_release(), process_sdp(), rpt(), rpt_exec(), rxfax_exec(), send_waveform_to_channel(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), tonepair_alloc(), tonepair_release(), txfax_exec(), and update_features().
02956 { 02957 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 02958 &chan->writetrans, 1); 02959 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 3756 of file channel.c.
References ast_channel::_state, ast_device_state_changed_literal(), ast_state2str(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, EVENT_FLAG_CALL, manager_event(), and S_OR.
Referenced by __ast_read(), __oh323_update_info(), __zt_exception(), agent_call(), alsa_answer(), ast_answer(), cb_events(), check_availability(), gtalk_call(), gtalk_newcall(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_response_invite(), handle_soft_key_event_message(), handle_stimulus_message(), iax2_call(), mgcp_answer(), mgcp_call(), mgcp_ss(), misdn_call(), misdn_indication(), nbs_call(), nbs_hangup(), oh323_answer(), oss_answer(), pbx_builtin_busy(), pbx_builtin_congestion(), phone_answer(), phone_call(), phone_exception(), phone_hangup(), phone_write(), release_chan(), sip_answer(), skinny_answer(), skinny_call(), skinny_newcall(), ss_thread(), update_state(), zt_answer(), zt_call(), zt_handle_event(), zt_indicate(), and zt_read().
03757 { 03758 int oldstate = chan->_state; 03759 03760 if (oldstate == state) 03761 return 0; 03762 03763 chan->_state = state; 03764 ast_device_state_changed_literal(chan->name); 03765 /* setstate used to conditionally report Newchannel; this is no more */ 03766 manager_event(EVENT_FLAG_CALL, 03767 "Newstate", 03768 "Channel: %s\r\n" 03769 "State: %s\r\n" 03770 "CallerID: %s\r\n" 03771 "CallerIDName: %s\r\n" 03772 "Uniqueid: %s\r\n", 03773 chan->name, ast_state2str(chan->_state), 03774 S_OR(chan->cid.cid_num, "<unknown>"), 03775 S_OR(chan->cid.cid_name, "<unknown>"), 03776 chan->uniqueid); 03777 03778 return 0; 03779 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(void *data) | func, | |||
void * | data | |||
) |
Definition at line 2021 of file channel.c.
References ast_log(), LOG_DEBUG, option_debug, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by __ast_read(), ast_activate_generator(), ast_closestream(), ast_deactivate_generator(), and ast_readaudio_callback().
02022 { 02023 int res = -1; 02024 #ifdef HAVE_ZAPTEL 02025 if (c->timingfd > -1) { 02026 if (!func) { 02027 samples = 0; 02028 data = 0; 02029 } 02030 if (option_debug) 02031 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 02032 res = ioctl(c->timingfd, ZT_TIMERCONFIG, &samples); 02033 c->timingfunc = func; 02034 c->timingdata = data; 02035 } 02036 #endif 02037 return res; 02038 }
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 472 of file channel.c.
References shutting_down.
00473 { 00474 return shutting_down; 00475 }
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 1525 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_softhangup_nolock(), and ast_channel_spy::chan.
Referenced by __ast_module_user_hangup_all(), __unload_module(), action_hangup(), agent_hangup(), agent_logoff(), ast_begin_shutdown(), function_ilink(), handle_hangup(), handle_link_data(), handle_softhangup(), manager_park(), read_agent_config(), rpt(), rpt_call(), rpt_do_restart(), sla_handle_hold_event(), softhangup_exec(), start_spying(), startmon(), unload_module(), and zt_handle_event().
01526 { 01527 int res; 01528 ast_channel_lock(chan); 01529 res = ast_softhangup_nolock(chan, cause); 01530 ast_channel_unlock(chan); 01531 return res; 01532 }
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 1511 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, ast_channel_spy::chan, LOG_DEBUG, and option_debug.
Referenced by ast_async_goto(), ast_softhangup(), attempt_transfer(), do_monitor(), oh323_indicate(), sip_indicate(), and skinny_indicate().
01512 { 01513 if (option_debug) 01514 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01515 /* Inform channel driver that we need to be hung up, if it cares */ 01516 chan->_softhangup |= cause; 01517 ast_queue_frame(chan, &ast_null_frame); 01518 /* Interrupt any poll call or such */ 01519 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01520 pthread_kill(chan->blocker, SIGURG); 01521 return 0; 01522 }
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 611 of file channel.c.
References AST_STATE_BUSY, AST_STATE_DIALING, AST_STATE_DIALING_OFFHOOK, AST_STATE_DOWN, AST_STATE_OFFHOOK, AST_STATE_PRERING, AST_STATE_RESERVED, AST_STATE_RING, AST_STATE_RINGING, AST_STATE_UP, and STATE2STR_BUFSIZE.
Referenced by action_status(), agent_hangup(), ast_setstate(), attempt_transfer(), func_channel_read(), handle_chanlist(), handle_chanlist_deprecated(), handle_invite_replaces(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_new(), serialize_showchan(), and sip_hangup().
00612 { 00613 char *buf; 00614 00615 switch(state) { 00616 case AST_STATE_DOWN: 00617 return "Down"; 00618 case AST_STATE_RESERVED: 00619 return "Rsrvd"; 00620 case AST_STATE_OFFHOOK: 00621 return "OffHook"; 00622 case AST_STATE_DIALING: 00623 return "Dialing"; 00624 case AST_STATE_RING: 00625 return "Ring"; 00626 case AST_STATE_RINGING: 00627 return "Ringing"; 00628 case AST_STATE_UP: 00629 return "Up"; 00630 case AST_STATE_BUSY: 00631 return "Busy"; 00632 case AST_STATE_DIALING_OFFHOOK: 00633 return "Dialing Offhook"; 00634 case AST_STATE_PRERING: 00635 return "Pre-ring"; 00636 default: 00637 if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE))) 00638 return "Unknown"; 00639 snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state); 00640 return buf; 00641 } 00642 }
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 599 of file channel.c.
References causes.
Referenced by pbx_builtin_hangup().
00600 { 00601 int x; 00602 00603 for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++) 00604 if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0) 00605 return causes[x].cause; 00606 00607 return -1; 00608 }
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 4379 of file channel.c.
References ast_frfree(), ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
04380 { 04381 int res; 04382 04383 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 04384 return res; 04385 04386 /* Give us some wiggle room */ 04387 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 04388 struct ast_frame *f = ast_read(chan); 04389 if (f) 04390 ast_frfree(f); 04391 else 04392 return -1; 04393 } 04394 return 0; 04395 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 4361 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().
04362 { 04363 struct tonepair_def d = { 0, }; 04364 04365 d.freq1 = freq1; 04366 d.freq2 = freq2; 04367 d.duration = duration; 04368 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 04369 if (ast_activate_generator(chan, &tonepair, &d)) 04370 return -1; 04371 return 0; 04372 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 4374 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
04375 { 04376 ast_deactivate_generator(chan); 04377 }
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 3163 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().
03164 { 03165 int res = -1; 03166 03167 /* Stop if we're a zombie or need a soft hangup */ 03168 ast_channel_lock(chan); 03169 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03170 if (chan->tech->transfer) { 03171 res = chan->tech->transfer(chan, dest); 03172 if (!res) 03173 res = 1; 03174 } else 03175 res = 0; 03176 } 03177 ast_channel_unlock(chan); 03178 return res; 03179 }
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 645 of file channel.c.
References AST_TRANS_CAP_3_1K_AUDIO, AST_TRANS_CAP_DIGITAL, AST_TRANS_CAP_DIGITAL_W_TONES, AST_TRANS_CAP_RESTRICTED_DIGITAL, AST_TRANS_CAP_SPEECH, and AST_TRANS_CAP_VIDEO.
Referenced by cb_events(), misdn_call(), oh323_call(), zt_call(), and zt_new().
00646 { 00647 switch(transfercapability) { 00648 case AST_TRANS_CAP_SPEECH: 00649 return "SPEECH"; 00650 case AST_TRANS_CAP_DIGITAL: 00651 return "DIGITAL"; 00652 case AST_TRANS_CAP_RESTRICTED_DIGITAL: 00653 return "RESTRICTED_DIGITAL"; 00654 case AST_TRANS_CAP_3_1K_AUDIO: 00655 return "3K1AUDIO"; 00656 case AST_TRANS_CAP_DIGITAL_W_TONES: 00657 return "DIGITAL_W_TONES"; 00658 case AST_TRANS_CAP_VIDEO: 00659 return "VIDEO"; 00660 default: 00661 return "UNKNOWN"; 00662 } 00663 }
void ast_uninstall_music_functions | ( | void | ) |
Definition at line 4439 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
04440 { 04441 ast_moh_start_ptr = NULL; 04442 ast_moh_stop_ptr = NULL; 04443 ast_moh_cleanup_ptr = NULL; 04444 }
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 2005 of file channel.c.
References ast_waitfor_nandfds().
Referenced by __adsi_transmit_messages(), __ast_play_and_record(), __ast_request_and_dial(), adsi_careful_send(), agent_ack_sleep(), ast_dtmf_stream(), ast_recvtext(), ast_safe_sleep_conditional(), ast_tonepair(), async_wait(), background_detect_exec(), channel_spy(), conf_exec(), conf_flush(), dictate_exec(), disa_exec(), do_waiting(), echo_exec(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), nv_background_detect_exec(), nv_detectfax_exec(), receive_dtmf_digits(), recordthread(), rxfax_exec(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), txfax_exec(), wait_for_hangup(), waitforring_exec(), and waitstream_core().
02006 { 02007 int oldms = ms; /* -1 if no timeout */ 02008 02009 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 02010 if ((ms < 0) && (oldms < 0)) 02011 ms = 0; 02012 return ms; 02013 }
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 2000 of file channel.c.
References ast_waitfor_nandfds().
Referenced by ast_feature_request_and_dial(), ast_udptl_bridge(), autoservice_run(), bridge_native_loop(), bridge_p2p_loop(), misdn_bridge(), monitor_dial(), rpt(), wait_for_answer(), wait_for_winner(), and zt_bridge().
02001 { 02002 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 02003 }
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 1845 of file channel.c.
References ast_waitfor_nandfds().
Referenced by dundi_lookup_internal(), and dundi_precache_internal().
01846 { 01847 int winner = -1; 01848 ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms); 01849 return winner; 01850 }
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 1853 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, 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().
01855 { 01856 struct timeval start = { 0 , 0 }; 01857 struct pollfd *pfds; 01858 int res; 01859 long rms; 01860 int x, y, max; 01861 int sz; 01862 time_t now = 0; 01863 long whentohangup = 0, diff; 01864 struct ast_channel *winner = NULL; 01865 struct fdmap { 01866 int chan; 01867 int fdno; 01868 } *fdmap; 01869 01870 sz = n * AST_MAX_FDS + nfds; 01871 pfds = alloca(sizeof(*pfds) * sz); 01872 fdmap = alloca(sizeof(*fdmap) * sz); 01873 01874 if (outfd) 01875 *outfd = -99999; 01876 if (exception) 01877 *exception = 0; 01878 01879 /* Perform any pending masquerades */ 01880 for (x=0; x < n; x++) { 01881 ast_channel_lock(c[x]); 01882 if (c[x]->masq) { 01883 if (ast_do_masquerade(c[x])) { 01884 ast_log(LOG_WARNING, "Masquerade failed\n"); 01885 *ms = -1; 01886 ast_channel_unlock(c[x]); 01887 return NULL; 01888 } 01889 } 01890 if (c[x]->whentohangup) { 01891 if (!whentohangup) 01892 time(&now); 01893 diff = c[x]->whentohangup - now; 01894 if (diff < 1) { 01895 /* Should already be hungup */ 01896 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01897 ast_channel_unlock(c[x]); 01898 return c[x]; 01899 } 01900 if (!whentohangup || (diff < whentohangup)) 01901 whentohangup = diff; 01902 } 01903 ast_channel_unlock(c[x]); 01904 } 01905 /* Wait full interval */ 01906 rms = *ms; 01907 if (whentohangup) { 01908 rms = whentohangup * 1000; /* timeout in milliseconds */ 01909 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01910 rms = *ms; 01911 } 01912 /* 01913 * Build the pollfd array, putting the channels' fds first, 01914 * followed by individual fds. Order is important because 01915 * individual fd's must have priority over channel fds. 01916 */ 01917 max = 0; 01918 for (x=0; x<n; x++) { 01919 for (y=0; y<AST_MAX_FDS; y++) { 01920 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01921 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01922 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01923 } 01924 CHECK_BLOCKING(c[x]); 01925 } 01926 /* Add the individual fds */ 01927 for (x=0; x<nfds; x++) { 01928 fdmap[max].chan = -1; 01929 max += ast_add_fd(&pfds[max], fds[x]); 01930 } 01931 01932 if (*ms > 0) 01933 start = ast_tvnow(); 01934 01935 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01936 do { 01937 int kbrms = rms; 01938 if (kbrms > 600000) 01939 kbrms = 600000; 01940 res = poll(pfds, max, kbrms); 01941 if (!res) 01942 rms -= kbrms; 01943 } while (!res && (rms > 0)); 01944 } else { 01945 res = poll(pfds, max, rms); 01946 } 01947 for (x=0; x<n; x++) 01948 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01949 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01950 if (errno != EINTR) 01951 *ms = -1; 01952 return NULL; 01953 } 01954 if (whentohangup) { /* if we have a timeout, check who expired */ 01955 time(&now); 01956 for (x=0; x<n; x++) { 01957 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01958 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01959 if (winner == NULL) 01960 winner = c[x]; 01961 } 01962 } 01963 } 01964 if (res == 0) { /* no fd ready, reset timeout and done */ 01965 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01966 return winner; 01967 } 01968 /* 01969 * Then check if any channel or fd has a pending event. 01970 * Remember to check channels first and fds last, as they 01971 * must have priority on setting 'winner' 01972 */ 01973 for (x = 0; x < max; x++) { 01974 res = pfds[x].revents; 01975 if (res == 0) 01976 continue; 01977 if (fdmap[x].chan >= 0) { /* this is a channel */ 01978 winner = c[fdmap[x].chan]; /* override previous winners */ 01979 if (res & POLLPRI) 01980 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01981 else 01982 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01983 winner->fdno = fdmap[x].fdno; 01984 } else { /* this is an fd */ 01985 if (outfd) 01986 *outfd = pfds[x].fd; 01987 if (exception) 01988 *exception = (res & POLLPRI) ? -1 : 0; 01989 winner = NULL; 01990 } 01991 } 01992 if (*ms > 0) { 01993 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01994 if (*ms < 0) 01995 *ms = 0; 01996 } 01997 return winner; 01998 }
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 2016 of file channel.c.
References ast_waitfordigit_full().
Referenced by _while_exec(), advanced_options(), ast_adsi_get_cpeid(), ast_adsi_get_cpeinfo(), ast_adsi_print(), ast_adsi_read_encoded_dtmf(), ast_adsi_transmit_message_full(), ast_app_dtget(), ast_control_streamfile(), ast_record_review(), builtin_atxfer(), collect_digits(), common_exec(), cpeid_exec(), dialout(), directory_exec(), forward_message(), get_folder(), ivr_dispatch(), mgcp_ss(), my_getsigstr(), pbx_builtin_waitexten(), play_mailbox_owner(), play_record_review(), read_exec(), read_newoption(), retrydial_exec(), sendnoise(), skinny_ss(), ss_thread(), test1_client(), test1_server(), vm_execmain(), vm_forwardoptions(), vm_instructions(), vm_options(), vm_tempgreeting(), wait_a_bit(), and wait_our_turn().
02017 { 02018 return ast_waitfordigit_full(c, ms, -1, -1); 02019 }
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 2040 of file channel.c.
References ast_check_hangup(), AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, AST_CONTROL_RINGING, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF, AST_FRAME_VOICE, ast_frfree(), ast_log(), ast_read(), ast_test_flag, ast_waitfor_nandfds(), f, and LOG_WARNING.
Referenced by ast_readstring_full(), ast_waitfordigit(), handle_getoption(), and handle_waitfordigit().
02041 { 02042 02043 /* Stop if we're a zombie or need a soft hangup */ 02044 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 02045 return -1; 02046 /* Wait for a digit, no more than ms milliseconds total. */ 02047 while (ms) { 02048 struct ast_channel *rchan; 02049 int outfd; 02050 02051 errno = 0; 02052 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 02053 if (!rchan && outfd < 0 && ms) { 02054 if (errno == 0 || errno == EINTR) 02055 continue; 02056 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 02057 return -1; 02058 } else if (outfd > -1) { 02059 /* The FD we were watching has something waiting */ 02060 return 1; 02061 } else if (rchan) { 02062 int res; 02063 struct ast_frame *f = ast_read(c); 02064 if (!f) 02065 return -1; 02066 02067 switch(f->frametype) { 02068 case AST_FRAME_DTMF: 02069 res = f->subclass; 02070 ast_frfree(f); 02071 return res; 02072 case AST_FRAME_CONTROL: 02073 switch(f->subclass) { 02074 case AST_CONTROL_HANGUP: 02075 ast_frfree(f); 02076 return -1; 02077 case AST_CONTROL_RINGING: 02078 case AST_CONTROL_ANSWER: 02079 /* Unimportant */ 02080 break; 02081 default: 02082 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 02083 break; 02084 } 02085 break; 02086 case AST_FRAME_VOICE: 02087 /* Write audio if appropriate */ 02088 if (audiofd > -1) 02089 write(audiofd, f->data, f->datalen); 02090 default: 02091 /* Ignore */ 02092 break; 02093 } 02094 ast_frfree(f); 02095 } 02096 } 02097 return 0; /* Time is up */ 02098 }
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 1107 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01109 { 01110 return channel_find_locked(chan, NULL, 0, context, exten); 01111 }
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 1094 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01096 { 01097 return channel_find_locked(chan, name, namelen, NULL, NULL); 01098 }
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 2696 of file channel.c.
References ast_channel::_softhangup, ast_channel_lock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, ast_deactivate_generator(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_WHISPER, AST_FLAG_WRITE_INT, AST_FLAG_ZOMBIE, AST_FORMAT_SLINEAR, ast_frame_adjust_volume(), AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_MODEM, AST_FRAME_NULL, ast_frame_slinear_sum(), AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree(), ast_log(), AST_MONITOR_RUNNING, ast_mutex_lock(), ast_mutex_unlock(), ast_seekstream(), ast_senddigit_begin(), ast_senddigit_end(), ast_set_write_format(), ast_slinfactory_available(), ast_slinfactory_read(), AST_SOFTHANGUP_DEV, ast_test_flag, ast_translate(), ast_translator_build_path(), ast_translator_free_path(), ast_writestream(), CHECK_BLOCKING, ast_frame::data, ast_frame::datalen, DEBUGCHAN_FLAG, f, ast_channel::fout, FRAMECOUNT_INC, ast_frame::frametype, ast_channel::generatordata, ast_channel_tech::indicate, ast_channel::insmpl, ast_frame::len, ast_channel_whisper_buffer::lock, LOG_WARNING, ast_channel::masq, ast_channel::masqr, ast_channel::monitor, MONITOR_DELAY, ast_channel_whisper_buffer::original_format, ast_channel::outsmpl, ast_channel_whisper_buffer::path, queue_frame_to_spies(), ast_channel::rawwriteformat, SEEK_FORCECUR, ast_channel_tech::send_html, ast_channel_tech::send_text, ast_channel_whisper_buffer::sf, ast_channel::spies, SPY_WRITE, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel::whisper, ast_channel_tech::write, ast_channel_monitor::write_stream, ast_channel_tech::write_video, ast_channel::writeformat, and ast_channel::writetrans.
Referenced by adsi_careful_send(), agent_write(), ast_prod(), ast_readaudio_callback(), ast_readvideo_callback(), ast_udptl_bridge(), ast_write_video(), bridge_native_loop(), bridge_p2p_loop(), conf_queue_dtmf(), conf_run(), dictate_exec(), echo_exec(), features_write(), function_ilink(), gen_generate(), handle_link_data(), jb_get_and_deliver(), linear_generator(), milliwatt_generate(), misdn_bridge(), moh_files_generator(), moh_generate(), mp3_exec(), mwanalyze_exec(), NBScat_exec(), rpt(), rpt_call(), rxfax_exec(), send_link_dtmf(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), spy_generate(), txfax_exec(), wait_for_answer(), and zt_bridge().
02697 { 02698 int res = -1; 02699 struct ast_frame *f = NULL; 02700 02701 /* Stop if we're a zombie or need a soft hangup */ 02702 ast_channel_lock(chan); 02703 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 02704 goto done; 02705 02706 /* Handle any pending masquerades */ 02707 if (chan->masq && ast_do_masquerade(chan)) { 02708 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02709 goto done; 02710 } 02711 if (chan->masqr) { 02712 res = 0; /* XXX explain, why 0 ? */ 02713 goto done; 02714 } 02715 if (chan->generatordata) { 02716 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) 02717 ast_deactivate_generator(chan); 02718 else { 02719 if (fr->frametype == AST_FRAME_DTMF_END) { 02720 /* There is a generator running while we're in the middle of a digit. 02721 * It's probably inband DTMF, so go ahead and pass it so it can 02722 * stop the generator */ 02723 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02724 ast_channel_unlock(chan); 02725 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02726 ast_channel_lock(chan); 02727 CHECK_BLOCKING(chan); 02728 } 02729 02730 res = 0; /* XXX explain, why 0 ? */ 02731 goto done; 02732 } 02733 } 02734 /* High bit prints debugging */ 02735 if (chan->fout & DEBUGCHAN_FLAG) 02736 ast_frame_dump(chan->name, fr, ">>"); 02737 CHECK_BLOCKING(chan); 02738 switch(fr->frametype) { 02739 case AST_FRAME_CONTROL: 02740 res = (chan->tech->indicate == NULL) ? 0 : 02741 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 02742 break; 02743 case AST_FRAME_DTMF_BEGIN: 02744 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02745 ast_channel_unlock(chan); 02746 res = ast_senddigit_begin(chan, fr->subclass); 02747 ast_channel_lock(chan); 02748 CHECK_BLOCKING(chan); 02749 break; 02750 case AST_FRAME_DTMF_END: 02751 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02752 ast_channel_unlock(chan); 02753 res = ast_senddigit_end(chan, fr->subclass, fr->len); 02754 ast_channel_lock(chan); 02755 CHECK_BLOCKING(chan); 02756 break; 02757 case AST_FRAME_TEXT: 02758 res = (chan->tech->send_text == NULL) ? 0 : 02759 chan->tech->send_text(chan, (char *) fr->data); 02760 break; 02761 case AST_FRAME_HTML: 02762 res = (chan->tech->send_html == NULL) ? 0 : 02763 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 02764 break; 02765 case AST_FRAME_VIDEO: 02766 /* XXX Handle translation of video codecs one day XXX */ 02767 res = (chan->tech->write_video == NULL) ? 0 : 02768 chan->tech->write_video(chan, fr); 02769 break; 02770 case AST_FRAME_MODEM: 02771 res = (chan->tech->write == NULL) ? 0 : 02772 chan->tech->write(chan, fr); 02773 break; 02774 case AST_FRAME_VOICE: 02775 if (chan->tech->write == NULL) 02776 break; /*! \todo XXX should return 0 maybe ? */ 02777 02778 /* If someone is whispering on this channel then we must ensure that we are always getting signed linear frames */ 02779 if (ast_test_flag(chan, AST_FLAG_WHISPER)) { 02780 if (fr->subclass == AST_FORMAT_SLINEAR) 02781 f = fr; 02782 else { 02783 ast_mutex_lock(&chan->whisper->lock); 02784 if (chan->writeformat != AST_FORMAT_SLINEAR) { 02785 /* Rebuild the translation path and set our write format back to signed linear */ 02786 chan->whisper->original_format = chan->writeformat; 02787 ast_set_write_format(chan, AST_FORMAT_SLINEAR); 02788 if (chan->whisper->path) 02789 ast_translator_free_path(chan->whisper->path); 02790 chan->whisper->path = ast_translator_build_path(AST_FORMAT_SLINEAR, chan->whisper->original_format); 02791 } 02792 /* Translate frame using the above translation path */ 02793 f = (chan->whisper->path) ? ast_translate(chan->whisper->path, fr, 0) : fr; 02794 ast_mutex_unlock(&chan->whisper->lock); 02795 } 02796 } else { 02797 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 02798 if (fr->subclass == chan->rawwriteformat) 02799 f = fr; 02800 else 02801 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 02802 } 02803 02804 /* If we have no frame of audio, then we have to bail out */ 02805 if (f == NULL) { 02806 res = 0; 02807 break; 02808 } 02809 02810 /* If spies are on the channel then queue the frame out to them */ 02811 if (chan->spies) 02812 queue_frame_to_spies(chan, f, SPY_WRITE); 02813 02814 /* If Monitor is running on this channel, then we have to write frames out there too */ 02815 if (chan->monitor && chan->monitor->write_stream) { 02816 /* XXX must explain this code */ 02817 #ifndef MONITOR_CONSTANT_DELAY 02818 int jump = chan->insmpl - chan->outsmpl - 4 * f->samples; 02819 if (jump >= 0) { 02820 jump = chan->insmpl - chan->outsmpl; 02821 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 02822 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02823 chan->outsmpl += jump + f->samples; 02824 } else 02825 chan->outsmpl += f->samples; 02826 #else 02827 int jump = chan->insmpl - chan->outsmpl; 02828 if (jump - MONITOR_DELAY >= 0) { 02829 if (ast_seekstream(chan->monitor->write_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02830 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 02831 chan->outsmpl += jump; 02832 } else 02833 chan->outsmpl += f->samples; 02834 #endif 02835 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02836 if (ast_writestream(chan->monitor->write_stream, f) < 0) 02837 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 02838 } 02839 } 02840 02841 /* Finally the good part! Write this out to the channel */ 02842 if (ast_test_flag(chan, AST_FLAG_WHISPER)) { 02843 /* frame is assumed to be in SLINEAR, since that is 02844 required for whisper mode */ 02845 ast_frame_adjust_volume(f, -2); 02846 if (ast_slinfactory_available(&chan->whisper->sf) >= f->samples) { 02847 short buf[f->samples]; 02848 struct ast_frame whisper = { 02849 .frametype = AST_FRAME_VOICE, 02850 .subclass = AST_FORMAT_SLINEAR, 02851 .data = buf, 02852 .datalen = sizeof(buf), 02853 .samples = f->samples, 02854 }; 02855 02856 ast_mutex_lock(&chan->whisper->lock); 02857 if (ast_slinfactory_read(&chan->whisper->sf, buf, f->samples)) 02858 ast_frame_slinear_sum(f, &whisper); 02859 ast_mutex_unlock(&chan->whisper->lock); 02860 } 02861 /* and now put it through the regular translator */ 02862 f = (chan->writetrans) ? ast_translate(chan->writetrans, f, 0) : f; 02863 } 02864 if (f) 02865 res = chan->tech->write(chan, f); 02866 else 02867 res = 0; 02868 break; 02869 case AST_FRAME_NULL: 02870 case AST_FRAME_IAX: 02871 /* Ignore these */ 02872 res = 0; 02873 break; 02874 default: 02875 /* At this point, fr is the incoming frame and f is NULL. Channels do 02876 * not expect to get NULL as a frame pointer and will segfault. Hence, 02877 * we output the original frame passed in. */ 02878 res = chan->tech->write(chan, fr); 02879 break; 02880 } 02881 02882 if (f && f != fr) 02883 ast_frfree(f); 02884 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02885 /* Consider a write failure to force a soft hangup */ 02886 if (res < 0) 02887 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02888 else { 02889 chan->fout = FRAMECOUNT_INC(chan->fout); 02890 } 02891 done: 02892 ast_channel_unlock(chan); 02893 return res; 02894 }
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 2685 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
02686 { 02687 int res; 02688 if (!chan->tech->write_video) 02689 return 0; 02690 res = ast_write(chan, fr); 02691 if (!res) 02692 res = 1; 02693 return res; 02694 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 3791 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().
03792 { 03793 int min = 0, sec = 0, check; 03794 03795 check = ast_autoservice_start(peer); 03796 if (check) 03797 return; 03798 03799 if (remain > 0) { 03800 if (remain / 60 > 1) { 03801 min = remain / 60; 03802 sec = remain % 60; 03803 } else { 03804 sec = remain; 03805 } 03806 } 03807 03808 if (!strcmp(sound,"timeleft")) { /* Queue support */ 03809 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 03810 if (min) { 03811 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 03812 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 03813 } 03814 if (sec) { 03815 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 03816 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 03817 } 03818 } else { 03819 ast_stream_and_wait(chan, sound, chan->language, ""); 03820 } 03821 03822 ast_autoservice_stop(peer); 03823 }
static struct ast_channel* channel_find_locked | ( | const struct ast_channel * | prev, | |
const char * | name, | |||
const int | namelen, | |||
const char * | context, | |||
const char * | exten | |||
) | [static] |
Helper function to find channels.
It supports these modes:
prev != NULL : get channel next in list after prev name != NULL : get channel with matching name name != NULL && namelen != 0 : get channel whose name starts with prefix exten != NULL : get channel whose exten or macroexten matches context != NULL && exten != NULL : get channel whose context or macrocontext
It returns with the channel's lock held. If getting the individual lock fails, unlock and retry quickly up to 10 times, then give up.
XXX also note that accessing fields (e.g. c->name in ast_log()) can only be done with the lock held or someone could delete the object while we work on it. This causes some ugliness in the code. Note that removing the first ast_log() may be harmful, as it would shorten the retry period and possibly cause failures. We should definitely go for a better scheme that is deadlock-free.
Definition at line 1016 of file channel.c.
References ast_channel_trylock, AST_LIST_LOCK, AST_LIST_NEXT, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel::context, ast_channel::exten, LOG_DEBUG, ast_channel::macrocontext, ast_channel::macroexten, and option_debug.
Referenced by ast_channel_walk_locked(), ast_get_channel_by_exten_locked(), ast_get_channel_by_name_locked(), ast_get_channel_by_name_prefix_locked(), ast_walk_channel_by_exten_locked(), and ast_walk_channel_by_name_prefix_locked().
01019 { 01020 const char *msg = prev ? "deadlock" : "initial deadlock"; 01021 int retries; 01022 struct ast_channel *c; 01023 01024 for (retries = 0; retries < 10; retries++) { 01025 int done; 01026 AST_LIST_LOCK(&channels); 01027 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01028 if (prev) { /* look for next item */ 01029 if (c != prev) /* not this one */ 01030 continue; 01031 /* found, prepare to return c->next */ 01032 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01033 /* If prev was the last item on the channel list, then we just 01034 * want to return NULL, instead of trying to deref NULL in the 01035 * next section. 01036 */ 01037 } 01038 if (name) { /* want match by name */ 01039 if ((!namelen && strcasecmp(c->name, name)) || 01040 (namelen && strncasecmp(c->name, name, namelen))) 01041 continue; /* name match failed */ 01042 } else if (exten) { 01043 if (context && strcasecmp(c->context, context) && 01044 strcasecmp(c->macrocontext, context)) 01045 continue; /* context match failed */ 01046 if (strcasecmp(c->exten, exten) && 01047 strcasecmp(c->macroexten, exten)) 01048 continue; /* exten match failed */ 01049 } 01050 /* if we get here, c points to the desired record */ 01051 break; 01052 } 01053 /* exit if chan not found or mutex acquired successfully */ 01054 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01055 done = c == NULL || ast_channel_trylock(c) == 0; 01056 if (!done) 01057 if (option_debug) 01058 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01059 AST_LIST_UNLOCK(&channels); 01060 if (done) 01061 return c; 01062 usleep(1); /* give other threads a chance before retrying */ 01063 } 01064 /* 01065 * c is surely not null, but we don't have the lock so cannot 01066 * access c->name 01067 */ 01068 if (option_debug) 01069 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", 01070 c, retries); 01071 01072 return NULL; 01073 }
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 4714 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
04715 { 04716 switch (reason) { 04717 case CHANNEL_MODULE_LOAD: 04718 return "LOAD (Channel module load)"; 04719 04720 case CHANNEL_MODULE_RELOAD: 04721 return "RELOAD (Channel module reload)"; 04722 04723 case CHANNEL_CLI_RELOAD: 04724 return "CLIRELOAD (Channel module reload by CLI command)"; 04725 04726 default: 04727 return "MANAGERRELOAD (Channel module reload by manager)"; 04728 } 04729 };
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 3424 of file channel.c.
References AST_LIST_APPEND_LIST, AST_LIST_FIRST, and ast_channel::varshead.
03425 { 03426 /* Append variables from clone channel into original channel */ 03427 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 03428 if (AST_LIST_FIRST(&clone->varshead)) 03429 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 03430 }
static char* complete_channeltypes | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 351 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00352 { 00353 struct chanlist *cl; 00354 int which = 0; 00355 int wordlen; 00356 char *ret = NULL; 00357 00358 if (pos != 3) 00359 return NULL; 00360 00361 wordlen = strlen(word); 00362 00363 AST_LIST_TRAVERSE(&backends, cl, list) { 00364 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00365 ret = strdup(cl->tech->type); 00366 break; 00367 } 00368 } 00369 00370 return ret; 00371 }
static char* complete_channeltypes_deprecated | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 329 of file channel.c.
References AST_LIST_TRAVERSE, strdup, chanlist::tech, and ast_channel_tech::type.
00330 { 00331 struct chanlist *cl; 00332 int which = 0; 00333 int wordlen; 00334 char *ret = NULL; 00335 00336 if (pos != 2) 00337 return NULL; 00338 00339 wordlen = strlen(word); 00340 00341 AST_LIST_TRAVERSE(&backends, cl, list) { 00342 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00343 ret = strdup(cl->tech->type); 00344 break; 00345 } 00346 } 00347 00348 return ret; 00349 }
static void copy_data_from_queue | ( | struct ast_channel_spy_queue * | queue, | |
short * | buf, | |||
unsigned int | samples | |||
) | [static] |
Definition at line 4512 of file channel.c.
References ast_codec_get_len(), ast_frfree(), AST_LIST_FIRST, AST_LIST_REMOVE_HEAD, ast_log(), f, ast_channel_spy_queue::format, LOG_ERROR, and ast_channel_spy_queue::samples.
Referenced by ast_channel_spy_read_frame().
04513 { 04514 struct ast_frame *f; 04515 int tocopy; 04516 int bytestocopy; 04517 04518 while (samples) { 04519 if (!(f = AST_LIST_FIRST(&queue->list))) { 04520 ast_log(LOG_ERROR, "Ran out of frames before buffer filled!\n"); 04521 break; 04522 } 04523 04524 tocopy = (f->samples > samples) ? samples : f->samples; 04525 bytestocopy = ast_codec_get_len(queue->format, tocopy); 04526 memcpy(buf, f->data, bytestocopy); 04527 samples -= tocopy; 04528 buf += tocopy; 04529 f->samples -= tocopy; 04530 f->data += bytestocopy; 04531 f->datalen -= bytestocopy; 04532 f->offset += bytestocopy; 04533 queue->samples -= tocopy; 04534 04535 if (!f->samples) 04536 ast_frfree(AST_LIST_REMOVE_HEAD(&queue->list, frame_list)); 04537 } 04538 }
static void detach_spies | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 1494 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_channel_spy::chan, ast_channel::spies, spy_cleanup(), and spy_detach().
Referenced by ast_hangup().
01495 { 01496 struct ast_channel_spy *spy = NULL; 01497 01498 if (!chan->spies) 01499 return; 01500 01501 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) { 01502 AST_LIST_REMOVE_CURRENT(&chan->spies->list, list); 01503 spy_detach(spy, chan); 01504 } 01505 AST_LIST_TRAVERSE_SAFE_END 01506 01507 spy_cleanup(chan); 01508 }
static void free_cid | ( | struct ast_callerid * | cid | ) | [static] |
Definition at line 1140 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().
01141 { 01142 if (cid->cid_dnid) 01143 free(cid->cid_dnid); 01144 if (cid->cid_num) 01145 free(cid->cid_num); 01146 if (cid->cid_name) 01147 free(cid->cid_name); 01148 if (cid->cid_ani) 01149 free(cid->cid_ani); 01150 if (cid->cid_rdnis) 01151 free(cid->cid_rdnis); 01152 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1654 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().
01655 { 01656 if (clone->writetrans) 01657 ast_translator_free_path(clone->writetrans); 01658 if (clone->readtrans) 01659 ast_translator_free_path(clone->readtrans); 01660 clone->writetrans = NULL; 01661 clone->readtrans = NULL; 01662 clone->rawwriteformat = clone->nativeformats; 01663 clone->rawreadformat = clone->nativeformats; 01664 }
static int generator_force | ( | void * | data | ) | [static] |
Definition at line 1797 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_generator::generate, ast_channel::generator, ast_channel::generatordata, LOG_DEBUG, and option_debug.
Referenced by __ast_read(), and ast_activate_generator().
01798 { 01799 /* Called if generator doesn't have data */ 01800 void *tmp; 01801 int res; 01802 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples); 01803 struct ast_channel *chan = data; 01804 tmp = chan->generatordata; 01805 chan->generatordata = NULL; 01806 generate = chan->generator->generate; 01807 res = generate(chan, tmp, 0, 160); 01808 chan->generatordata = tmp; 01809 if (res) { 01810 if (option_debug) 01811 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01812 ast_deactivate_generator(chan); 01813 } 01814 return 0; 01815 }
static void queue_frame_to_spies | ( | struct ast_channel * | chan, | |
struct ast_frame * | f, | |||
enum spy_direction | dir | |||
) | [static] |
Definition at line 1541 of file channel.c.
References ast_clear_flag, ast_cond_signal(), AST_FORMAT_SLINEAR, ast_frdup(), ast_frfree(), ast_getformatname(), AST_LIST_INSERT_TAIL, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_set_flag, ast_test_flag, ast_translate(), ast_translator_build_path(), ast_translator_free_path(), CHANSPY_TRIGGER_FLUSH, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, CHANSPY_TRIGGER_READ, CHANSPY_TRIGGER_WRITE, f, ast_channel_spy_queue::format, channel_spy_trans::last_format, ast_channel_spy::lock, LOG_DEBUG, LOG_ERROR, LOG_WARNING, option_debug, channel_spy_trans::path, ast_channel_spy::read_queue, ast_channel_spy_list::read_translator, ast_frame::samples, ast_channel_spy_queue::samples, ast_channel::spies, SPY_QUEUE_SAMPLE_LIMIT, SPY_READ, SPY_WRITE, ast_channel_spy::trigger, ast_channel_spy::type, ast_channel_spy::write_queue, and ast_channel_spy_list::write_translator.
Referenced by __ast_read(), and ast_write().
01542 { 01543 struct ast_frame *translated_frame = NULL; 01544 struct ast_channel_spy *spy; 01545 struct channel_spy_trans *trans; 01546 01547 trans = (dir == SPY_READ) ? &chan->spies->read_translator : &chan->spies->write_translator; 01548 01549 AST_LIST_TRAVERSE(&chan->spies->list, spy, list) { 01550 struct ast_channel_spy_queue *queue; 01551 struct ast_frame *duped_fr; 01552 01553 ast_mutex_lock(&spy->lock); 01554 01555 queue = (dir == SPY_READ) ? &spy->read_queue : &spy->write_queue; 01556 01557 if ((queue->format == AST_FORMAT_SLINEAR) && (f->subclass != AST_FORMAT_SLINEAR)) { 01558 if (!translated_frame) { 01559 if (trans->path && (trans->last_format != f->subclass)) { 01560 ast_translator_free_path(trans->path); 01561 trans->path = NULL; 01562 } 01563 if (!trans->path) { 01564 if (option_debug) 01565 ast_log(LOG_DEBUG, "Building translator from %s to SLINEAR for spies on channel %s\n", 01566 ast_getformatname(f->subclass), chan->name); 01567 if ((trans->path = ast_translator_build_path(AST_FORMAT_SLINEAR, f->subclass)) == NULL) { 01568 ast_log(LOG_WARNING, "Cannot build a path from %s to %s\n", 01569 ast_getformatname(f->subclass), ast_getformatname(AST_FORMAT_SLINEAR)); 01570 ast_mutex_unlock(&spy->lock); 01571 continue; 01572 } else { 01573 trans->last_format = f->subclass; 01574 } 01575 } 01576 if (!(translated_frame = ast_translate(trans->path, f, 0))) { 01577 ast_log(LOG_ERROR, "Translation to %s failed, dropping frame for spies\n", 01578 ast_getformatname(AST_FORMAT_SLINEAR)); 01579 ast_mutex_unlock(&spy->lock); 01580 break; 01581 } 01582 } 01583 duped_fr = ast_frdup(translated_frame); 01584 } else if (f->subclass != queue->format) { 01585 ast_log(LOG_WARNING, "Spy '%s' on channel '%s' wants format '%s', but frame is '%s', dropping\n", 01586 spy->type, chan->name, 01587 ast_getformatname(queue->format), ast_getformatname(f->subclass)); 01588 ast_mutex_unlock(&spy->lock); 01589 continue; 01590 } else 01591 duped_fr = ast_frdup(f); 01592 01593 AST_LIST_INSERT_TAIL(&queue->list, duped_fr, frame_list); 01594 01595 queue->samples += f->samples; 01596 01597 if (queue->samples > SPY_QUEUE_SAMPLE_LIMIT) { 01598 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) { 01599 switch (ast_test_flag(spy, CHANSPY_TRIGGER_MODE)) { 01600 case CHANSPY_TRIGGER_READ: 01601 if (dir == SPY_WRITE) { 01602 ast_set_flag(spy, CHANSPY_TRIGGER_WRITE); 01603 ast_clear_flag(spy, CHANSPY_TRIGGER_READ); 01604 if (option_debug) 01605 ast_log(LOG_DEBUG, "Switching spy '%s' on '%s' to write-trigger mode\n", 01606 spy->type, chan->name); 01607 } 01608 break; 01609 case CHANSPY_TRIGGER_WRITE: 01610 if (dir == SPY_READ) { 01611 ast_set_flag(spy, CHANSPY_TRIGGER_READ); 01612 ast_clear_flag(spy, CHANSPY_TRIGGER_WRITE); 01613 if (option_debug) 01614 ast_log(LOG_DEBUG, "Switching spy '%s' on '%s' to read-trigger mode\n", 01615 spy->type, chan->name); 01616 } 01617 break; 01618 } 01619 if (option_debug) 01620 ast_log(LOG_DEBUG, "Triggering queue flush for spy '%s' on '%s'\n", 01621 spy->type, chan->name); 01622 ast_set_flag(spy, CHANSPY_TRIGGER_FLUSH); 01623 ast_cond_signal(&spy->trigger); 01624 } else { 01625 if (option_debug) 01626 ast_log(LOG_DEBUG, "Spy '%s' on channel '%s' %s queue too long, dropping frames\n", 01627 spy->type, chan->name, (dir == SPY_READ) ? "read" : "write"); 01628 while (queue->samples > SPY_QUEUE_SAMPLE_LIMIT) { 01629 struct ast_frame *drop = AST_LIST_REMOVE_HEAD(&queue->list, frame_list); 01630 queue->samples -= drop->samples; 01631 ast_frfree(drop); 01632 } 01633 } 01634 } else { 01635 switch (ast_test_flag(spy, CHANSPY_TRIGGER_MODE)) { 01636 case CHANSPY_TRIGGER_READ: 01637 if (dir == SPY_READ) 01638 ast_cond_signal(&spy->trigger); 01639 break; 01640 case CHANSPY_TRIGGER_WRITE: 01641 if (dir == SPY_WRITE) 01642 ast_cond_signal(&spy->trigger); 01643 break; 01644 } 01645 } 01646 01647 ast_mutex_unlock(&spy->lock); 01648 } 01649 01650 if (translated_frame) 01651 ast_frfree(translated_frame); 01652 }
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 2896 of file channel.c.
References ast_channel_lock, ast_channel_unlock, AST_FORMAT_AUDIO_MASK, ast_getformatname(), ast_log(), ast_translator_best_choice(), ast_translator_build_path(), ast_translator_free_path(), LOG_DEBUG, LOG_WARNING, ast_channel::nativeformats, and option_debug.
Referenced by ast_set_read_format(), and ast_set_write_format().
02898 { 02899 int native; 02900 int res; 02901 02902 /* Make sure we only consider audio */ 02903 fmt &= AST_FORMAT_AUDIO_MASK; 02904 02905 native = chan->nativeformats; 02906 /* Find a translation path from the native format to one of the desired formats */ 02907 if (!direction) 02908 /* reading */ 02909 res = ast_translator_best_choice(&fmt, &native); 02910 else 02911 /* writing */ 02912 res = ast_translator_best_choice(&native, &fmt); 02913 02914 if (res < 0) { 02915 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 02916 ast_getformatname(native), ast_getformatname(fmt)); 02917 return -1; 02918 } 02919 02920 /* Now we have a good choice for both. */ 02921 ast_channel_lock(chan); 02922 02923 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 02924 /* the channel is already in these formats, so nothing to do */ 02925 ast_channel_unlock(chan); 02926 return 0; 02927 } 02928 02929 *rawformat = native; 02930 /* User perspective is fmt */ 02931 *format = fmt; 02932 /* Free any read translation we have right now */ 02933 if (*trans) 02934 ast_translator_free_path(*trans); 02935 /* Build a translation path from the raw format to the desired format */ 02936 if (!direction) 02937 /* reading */ 02938 *trans = ast_translator_build_path(*format, *rawformat); 02939 else 02940 /* writing */ 02941 *trans = ast_translator_build_path(*rawformat, *format); 02942 ast_channel_unlock(chan); 02943 if (option_debug) 02944 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 02945 direction ? "write" : "read", ast_getformatname(fmt)); 02946 return 0; 02947 }
static int show_channeltype | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 276 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, ast_channel_tech::devicestate, ast_channel_tech::indicate, 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.
00277 { 00278 struct chanlist *cl = NULL; 00279 00280 if (argc != 4) 00281 return RESULT_SHOWUSAGE; 00282 00283 if (AST_LIST_LOCK(&channels)) { 00284 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00285 return RESULT_FAILURE; 00286 } 00287 00288 AST_LIST_TRAVERSE(&backends, cl, list) { 00289 if (!strncasecmp(cl->tech->type, argv[3], strlen(cl->tech->type))) { 00290 break; 00291 } 00292 } 00293 00294 00295 if (!cl) { 00296 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]); 00297 AST_LIST_UNLOCK(&channels); 00298 return RESULT_FAILURE; 00299 } 00300 00301 ast_cli(fd, 00302 "-- Info about channel driver: %s --\n" 00303 " Device State: %s\n" 00304 " Indication: %s\n" 00305 " Transfer : %s\n" 00306 " Capabilities: %d\n" 00307 " Digit Begin: %s\n" 00308 " Digit End: %s\n" 00309 " Send HTML : %s\n" 00310 " Image Support: %s\n" 00311 " Text Support: %s\n", 00312 cl->tech->type, 00313 (cl->tech->devicestate) ? "yes" : "no", 00314 (cl->tech->indicate) ? "yes" : "no", 00315 (cl->tech->transfer) ? "yes" : "no", 00316 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00317 (cl->tech->send_digit_begin) ? "yes" : "no", 00318 (cl->tech->send_digit_end) ? "yes" : "no", 00319 (cl->tech->send_html) ? "yes" : "no", 00320 (cl->tech->send_image) ? "yes" : "no", 00321 (cl->tech->send_text) ? "yes" : "no" 00322 00323 ); 00324 00325 AST_LIST_UNLOCK(&channels); 00326 return RESULT_SUCCESS; 00327 }
static int show_channeltype_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 223 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, ast_channel_tech::devicestate, ast_channel_tech::indicate, 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.
00224 { 00225 struct chanlist *cl = NULL; 00226 00227 if (argc != 3) 00228 return RESULT_SHOWUSAGE; 00229 00230 if (AST_LIST_LOCK(&channels)) { 00231 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00232 return RESULT_FAILURE; 00233 } 00234 00235 AST_LIST_TRAVERSE(&backends, cl, list) { 00236 if (!strncasecmp(cl->tech->type, argv[2], strlen(cl->tech->type))) { 00237 break; 00238 } 00239 } 00240 00241 00242 if (!cl) { 00243 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[2]); 00244 AST_LIST_UNLOCK(&channels); 00245 return RESULT_FAILURE; 00246 } 00247 00248 ast_cli(fd, 00249 "-- Info about channel driver: %s --\n" 00250 " Device State: %s\n" 00251 " Indication: %s\n" 00252 " Transfer : %s\n" 00253 " Capabilities: %d\n" 00254 " Digit Begin: %s\n" 00255 " Digit End: %s\n" 00256 " Send HTML : %s\n" 00257 " Image Support: %s\n" 00258 " Text Support: %s\n", 00259 cl->tech->type, 00260 (cl->tech->devicestate) ? "yes" : "no", 00261 (cl->tech->indicate) ? "yes" : "no", 00262 (cl->tech->transfer) ? "yes" : "no", 00263 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00264 (cl->tech->send_digit_begin) ? "yes" : "no", 00265 (cl->tech->send_digit_end) ? "yes" : "no", 00266 (cl->tech->send_html) ? "yes" : "no", 00267 (cl->tech->send_image) ? "yes" : "no", 00268 (cl->tech->send_text) ? "yes" : "no" 00269 00270 ); 00271 00272 AST_LIST_UNLOCK(&channels); 00273 return RESULT_SUCCESS; 00274 }
static int show_channeltypes | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 196 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::description, ast_channel_tech::devicestate, FORMAT, ast_channel_tech::indicate, LOG_WARNING, RESULT_SUCCESS, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00197 { 00198 #define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" 00199 struct chanlist *cl; 00200 int count_chan = 0; 00201 00202 ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer"); 00203 ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------"); 00204 if (AST_LIST_LOCK(&channels)) { 00205 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00206 return -1; 00207 } 00208 AST_LIST_TRAVERSE(&backends, cl, list) { 00209 ast_cli(fd, FORMAT, cl->tech->type, cl->tech->description, 00210 (cl->tech->devicestate) ? "yes" : "no", 00211 (cl->tech->indicate) ? "yes" : "no", 00212 (cl->tech->transfer) ? "yes" : "no"); 00213 count_chan++; 00214 } 00215 AST_LIST_UNLOCK(&channels); 00216 ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan); 00217 return RESULT_SUCCESS; 00218 00219 #undef FORMAT 00220 00221 }
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 4646 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
04647 { 04648 short buf[samples]; 04649 struct ast_frame frame = { 04650 .frametype = AST_FRAME_VOICE, 04651 .subclass = AST_FORMAT_SLINEAR, 04652 .data = buf, 04653 .samples = samples, 04654 .datalen = sizeof(buf), 04655 }; 04656 memset(buf, 0, sizeof(buf)); 04657 if (ast_write(chan, &frame)) 04658 return -1; 04659 return 0; 04660 }
static void silence_generator_release | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static void spy_cleanup | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 1389 of file channel.c.
References AST_LIST_EMPTY, ast_translator_free_path(), free, channel_spy_trans::path, ast_channel_spy_list::read_translator, ast_channel::spies, and ast_channel_spy_list::write_translator.
Referenced by ast_channel_spy_remove(), ast_channel_spy_stop_by_type(), and detach_spies().
01390 { 01391 if (!AST_LIST_EMPTY(&chan->spies->list)) 01392 return; 01393 if (chan->spies->read_translator.path) 01394 ast_translator_free_path(chan->spies->read_translator.path); 01395 if (chan->spies->write_translator.path) 01396 ast_translator_free_path(chan->spies->write_translator.path); 01397 free(chan->spies); 01398 chan->spies = NULL; 01399 return; 01400 }
static void spy_detach | ( | struct ast_channel_spy * | spy, | |
struct ast_channel * | chan | |||
) | [static] |
Definition at line 1403 of file channel.c.
References ast_cond_signal(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_test_flag, ast_channel_spy::chan, CHANSPY_DONE, CHANSPY_STOP, CHANSPY_TRIGGER_MODE, CHANSPY_TRIGGER_NONE, ast_channel_spy::lock, LOG_DEBUG, option_debug, ast_channel_spy::status, ast_channel_spy::trigger, and ast_channel_spy::type.
Referenced by ast_channel_spy_remove(), ast_channel_spy_stop_by_type(), and detach_spies().
01404 { 01405 ast_mutex_lock(&spy->lock); 01406 01407 /* We only need to poke them if they aren't already done */ 01408 if (spy->status != CHANSPY_DONE) { 01409 /* Indicate to the spy to stop */ 01410 spy->status = CHANSPY_STOP; 01411 spy->chan = NULL; 01412 /* Poke the spy if needed */ 01413 if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) 01414 ast_cond_signal(&spy->trigger); 01415 } 01416 01417 /* Print it out while we still have a lock so the structure can't go away (if signalled above) */ 01418 if (option_debug) 01419 ast_log(LOG_DEBUG, "Spy %s removed from channel %s\n", spy->type, chan->name); 01420 01421 ast_mutex_unlock(&spy->lock); 01422 01423 return; 01424 }
static void* tonepair_alloc | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4279 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.
04280 { 04281 struct tonepair_state *ts; 04282 struct tonepair_def *td = params; 04283 04284 if (!(ts = ast_calloc(1, sizeof(*ts)))) 04285 return NULL; 04286 ts->origwfmt = chan->writeformat; 04287 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 04288 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 04289 tonepair_release(NULL, ts); 04290 ts = NULL; 04291 } else { 04292 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 04293 ts->v1_1 = 0; 04294 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04295 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 04296 ts->v2_1 = 0; 04297 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 04298 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04299 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 04300 ts->duration = td->duration; 04301 ts->modulate = 0; 04302 } 04303 /* Let interrupts interrupt :) */ 04304 ast_set_flag(chan, AST_FLAG_WRITE_INT); 04305 return ts; 04306 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 4308 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.
04309 { 04310 struct tonepair_state *ts = data; 04311 int x; 04312 04313 /* we need to prepare a frame with 16 * timelen samples as we're 04314 * generating SLIN audio 04315 */ 04316 len = samples * 2; 04317 04318 if (len > sizeof(ts->data) / 2 - 1) { 04319 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 04320 return -1; 04321 } 04322 memset(&ts->f, 0, sizeof(ts->f)); 04323 for (x=0;x<len/2;x++) { 04324 ts->v1_1 = ts->v2_1; 04325 ts->v2_1 = ts->v3_1; 04326 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 04327 04328 ts->v1_2 = ts->v2_2; 04329 ts->v2_2 = ts->v3_2; 04330 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 04331 if (ts->modulate) { 04332 int p; 04333 p = ts->v3_2 - 32768; 04334 if (p < 0) p = -p; 04335 p = ((p * 9) / 10) + 1; 04336 ts->data[x] = (ts->v3_1 * p) >> 15; 04337 } else 04338 ts->data[x] = ts->v3_1 + ts->v3_2; 04339 } 04340 ts->f.frametype = AST_FRAME_VOICE; 04341 ts->f.subclass = AST_FORMAT_SLINEAR; 04342 ts->f.datalen = len; 04343 ts->f.samples = samples; 04344 ts->f.offset = AST_FRIENDLY_OFFSET; 04345 ts->f.data = ts->data; 04346 ast_write(chan, &ts->f); 04347 ts->pos += x; 04348 if (ts->duration > 0) { 04349 if (ts->pos >= ts->duration * 8) 04350 return -1; 04351 } 04352 return 0; 04353 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 4270 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
04271 { 04272 struct tonepair_state *ts = params; 04273 04274 if (chan) 04275 ast_set_write_format(chan, ts->origwfmt); 04276 free(ts); 04277 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 4428 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 4426 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 4427 of file channel.c.
Referenced by ast_install_music_functions(), ast_moh_stop(), and ast_uninstall_music_functions().
map AST_CAUSE's to readable string representations
Referenced by ast_cause2str(), ast_str2cause(), and dump_cause().
struct ast_cli_entry cli_channel[] [static] |
struct ast_cli_entry cli_show_channeltype_deprecated [static] |
Initial value:
{ { "show", "channeltype", NULL }, show_channeltype_deprecated, NULL, NULL, complete_channeltypes_deprecated }
struct ast_cli_entry cli_show_channeltypes_deprecated [static] |
Initial value:
{ { "show", "channeltypes", NULL }, show_channeltypes, NULL, NULL }
unsigned long global_fin |
unsigned long global_fout |
struct ast_channel_tech null_tech [static] |
char show_channeltype_usage[] [static] |
char show_channeltypes_usage[] [static] |
int shutting_down [static] |
Prevent new channel allocation if shutting down.
Definition at line 96 of file channel.c.
Referenced by ast_begin_shutdown(), ast_cancel_shutdown(), ast_channel_alloc(), and ast_shutting_down().
struct ast_generator silence_generator [static] |
Initial value:
{ .alloc = silence_generator_alloc, .release = silence_generator_release, .generate = silence_generator_generate, }
Definition at line 4662 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 4355 of file channel.c.
Referenced by ast_tonepair_start().