#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <math.h>
#include <sys/ioctl.h>
#include "asterisk/dahdi_compat.h"
#include "asterisk/pbx.h"
#include "asterisk/frame.h"
#include "asterisk/sched.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/audiohook.h"
#include "asterisk/musiconhold.h"
#include "asterisk/logger.h"
#include "asterisk/say.h"
#include "asterisk/file.h"
#include "asterisk/cli.h"
#include "asterisk/translate.h"
#include "asterisk/manager.h"
#include "asterisk/chanvars.h"
#include "asterisk/linkedlists.h"
#include "asterisk/indications.h"
#include "asterisk/monitor.h"
#include "asterisk/causes.h"
#include "asterisk/callerid.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
#include "asterisk/transcap.h"
#include "asterisk/devicestate.h"
#include "asterisk/sha1.h"
#include "asterisk/threadstorage.h"
#include "asterisk/slinfactory.h"
Go to the source code of this file.
Data Structures | |
struct | ast_cause |
struct | ast_silence_generator |
struct | backends |
struct | chanlist |
struct | channels |
struct | plc_ds |
struct | tonepair_def |
struct | tonepair_state |
Defines | |
#define | AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
#define | AST_MIN_DTMF_DURATION 80 |
#define | AST_MIN_DTMF_GAP 45 |
#define | FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define | MONITOR_CONSTANT_DELAY |
#define | MONITOR_DELAY 150 * 8 |
#define | STATE2STR_BUFSIZE 32 |
Functions | |
static int | __ast_queue_frame (struct ast_channel *chan, struct ast_frame *fin, int head, struct ast_frame *after) |
static struct ast_frame * | __ast_read (struct ast_channel *chan, int dropaudio) |
ast_channel * | __ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cid_num, const char *cid_name, struct outgoing_helper *oh) |
static void | adjust_frame_for_plc (struct ast_channel *chan, struct ast_frame *frame, struct ast_datastore *datastore) |
static void | apply_plc (struct ast_channel *chan, struct ast_frame *frame) |
int | ast_activate_generator (struct ast_channel *chan, struct ast_generator *gen, void *params) |
int | ast_active_channels (void) |
returns number of active/allocated channels | |
int | ast_answer (struct ast_channel *chan) |
Answer a ringing call. | |
void | ast_begin_shutdown (int hangup) |
Initiate system shutdown. | |
int | ast_best_codec (int fmts) |
Pick the best audio codec. | |
ast_channel * | ast_bridged_channel (struct ast_channel *chan) |
Find bridged channel. | |
int | ast_call (struct ast_channel *chan, char *addr, int timeout) |
Make a call. | |
ast_channel * | ast_call_forward (struct ast_channel *caller, struct ast_channel *orig, int *timeout, int format, struct outgoing_helper *oh, int *outstate) |
Forwards a call to a new channel specified by the original channel's call_forward str. If possible, the new forwarded channel is created and returned while the original one is terminated. | |
void | ast_cancel_shutdown (void) |
Cancel a shutdown in progress. | |
const char * | ast_cause2str (int cause) |
Gives the string form of a given hangup cause. | |
void | ast_change_name (struct ast_channel *chan, char *newname) |
Change channel name. | |
ast_channel * | ast_channel_alloc (int needqueue, int state, const char *cid_num, const char *cid_name, const char *acctcode, const char *exten, const char *context, const int amaflag, const char *name_fmt,...) |
Create a channel structure. | |
enum ast_bridge_result | ast_channel_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc) |
Bridge two channels together. | |
void | ast_channel_clear_softhangup (struct ast_channel *chan, int flag) |
Clear a set of softhangup flags from a channel. | |
int | ast_channel_cmpwhentohangup (struct ast_channel *chan, time_t offset) |
Compare a offset with the settings of when to hang a channel up. | |
int | ast_channel_datastore_add (struct ast_channel *chan, struct ast_datastore *datastore) |
Add a datastore to a channel. | |
ast_datastore * | ast_channel_datastore_alloc (const struct ast_datastore_info *info, char *uid) |
Create a channel datastore structure. | |
ast_datastore * | ast_channel_datastore_find (struct ast_channel *chan, const struct ast_datastore_info *info, char *uid) |
Find a datastore on a channel. | |
int | ast_channel_datastore_free (struct ast_datastore *datastore) |
Free a channel datastore structure. | |
int | ast_channel_datastore_inherit (struct ast_channel *from, struct ast_channel *to) |
Inherit datastores from a parent to a child. | |
int | ast_channel_datastore_remove (struct ast_channel *chan, struct ast_datastore *datastore) |
Remove a datastore from a channel. | |
int | ast_channel_defer_dtmf (struct ast_channel *chan) |
Set defer DTMF flag on channel. | |
void | ast_channel_free (struct ast_channel *chan) |
Free a channel structure. | |
void | ast_channel_inherit_variables (const struct ast_channel *parent, struct ast_channel *child) |
Inherits channel variable from parent to child channel. | |
int | ast_channel_make_compatible (struct ast_channel *chan, struct ast_channel *peer) |
Makes two channel formats compatible. | |
int | ast_channel_masquerade (struct ast_channel *original, struct ast_channel *clone) |
Weird function made for call transfers. | |
char * | ast_channel_reason2str (int reason) |
return an english explanation of the code returned thru __ast_request_and_dial's 'outstate' argument | |
int | ast_channel_register (const struct ast_channel_tech *tech) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports. | |
int | ast_channel_sendhtml (struct ast_channel *chan, int subclass, const char *data, int datalen) |
int | ast_channel_sendurl (struct ast_channel *chan, const char *url) |
int | ast_channel_setoption (struct ast_channel *chan, int option, void *data, int datalen, int block) |
Sets an option on a channel. | |
void | ast_channel_setwhentohangup (struct ast_channel *chan, time_t offset) |
Set when to hang a channel up. | |
ast_silence_generator * | ast_channel_start_silence_generator (struct ast_channel *chan) |
Starts a silence generator on the given channel. | |
void | ast_channel_stop_silence_generator (struct ast_channel *chan, struct ast_silence_generator *state) |
Stops a previously-started silence generator on the given channel. | |
int | ast_channel_supports_html (struct ast_channel *chan) |
void | ast_channel_undefer_dtmf (struct ast_channel *chan) |
Unset defer DTMF flag on channel. | |
void | ast_channel_unregister (const struct ast_channel_tech *tech) |
Unregister a channel technology. | |
ast_channel * | ast_channel_walk_locked (const struct ast_channel *prev) |
Browse channels in use Browse the channels currently in use. | |
void | ast_channels_init (void) |
ast_variable * | ast_channeltype_list (void) |
return an ast_variable list of channeltypes | |
int | ast_check_hangup (struct ast_channel *chan) |
Check to see if a channel is needing hang up. | |
static int | ast_check_hangup_locked (struct ast_channel *chan) |
void | ast_deactivate_generator (struct ast_channel *chan) |
int | ast_do_masquerade (struct ast_channel *original) |
Start masquerading a channel XXX This is a seriously wacked out operation. We're essentially putting the guts of the clone channel into the original channel. Start by killing off the original channel's backend. I'm not sure we're going to keep this function, because while the features are nice, the cost is very high in terms of pure nastiness. XXX. | |
static enum ast_bridge_result | ast_generic_bridge (struct ast_channel *c0, struct ast_channel *c1, struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc, struct timeval bridge_end) |
ast_channel * | ast_get_channel_by_exten_locked (const char *exten, const char *context) |
Get channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_get_channel_by_name_locked (const char *name) |
Get channel by name (locks channel). | |
ast_channel * | ast_get_channel_by_name_prefix_locked (const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
ast_channel_tech * | ast_get_channel_tech (const char *name) |
Get a channel technology structure by name. | |
ast_group_t | ast_get_group (const char *s) |
int | ast_hangup (struct ast_channel *chan) |
Hang up a channel. | |
int | ast_indicate (struct ast_channel *chan, int condition) |
Indicates condition of channel. | |
int | ast_indicate_data (struct ast_channel *chan, int _condition, const void *data, size_t datalen) |
Indicates condition of channel, with payload. | |
void | ast_install_music_functions (int(*start_ptr)(struct ast_channel *, const char *, const char *), void(*stop_ptr)(struct ast_channel *), void(*cleanup_ptr)(struct ast_channel *)) |
int | ast_internal_timing_enabled (struct ast_channel *chan) |
Check if the channel can run in internal timing mode. | |
int | ast_is_deferrable_frame (const struct ast_frame *frame) |
Should we keep this frame for later? | |
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. | |
int | ast_plc_reload (void) |
Reload genericplc configuration value from codecs.conf. | |
char * | ast_print_group (char *buf, int buflen, ast_group_t group) |
print call- and pickup groups into buffer | |
int | ast_prod (struct ast_channel *chan) |
Send empty audio to prime a channel driver. | |
int | ast_queue_control (struct ast_channel *chan, enum ast_control_frame_type control) |
Queue a control frame with payload. | |
int | ast_queue_control_data (struct ast_channel *chan, enum ast_control_frame_type control, const void *data, size_t datalen) |
Queue a control frame with payload. | |
int | ast_queue_frame (struct ast_channel *chan, struct ast_frame *fin) |
Queue one or more frames to a channel's frame queue. | |
int | ast_queue_frame_head (struct ast_channel *chan, struct ast_frame *fin) |
Queue one or more frames to the head of a channel's frame queue. | |
int | ast_queue_hangup (struct ast_channel *chan) |
Queue a hangup frame. | |
ast_frame * | ast_read (struct ast_channel *chan) |
Reads a frame. | |
static void | ast_read_generator_actions (struct ast_channel *chan, struct ast_frame *f) |
ast_frame * | ast_read_noaudio (struct ast_channel *chan) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame. | |
int | ast_readstring (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders) |
int | ast_readstring_full (struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders, int audiofd, int ctrlfd) |
int | ast_recvchar (struct ast_channel *chan, int timeout) |
Receives a text character from a channel. | |
char * | ast_recvtext (struct ast_channel *chan, int timeout) |
Receives a text string from a channel Read a string of text from a channel. | |
ast_channel * | ast_request (const char *type, int format, void *data, int *cause) |
Requests a channel. | |
ast_channel * | ast_request_and_dial (const char *type, int format, void *data, int timeout, int *outstate, const char *cidnum, const char *cidname) |
Request a channel of a given type, with data as optional information used by the low level module and attempt to place a call on it. | |
int | ast_safe_sleep (struct ast_channel *chan, int ms) |
Wait for a specied amount of time, looking for hangups. | |
int | ast_safe_sleep_conditional (struct ast_channel *chan, int ms, int(*cond)(void *), void *data) |
Wait for a specied amount of time, looking for hangups and a condition argument. | |
char * | ast_safe_string_alloc (const char *fmt,...) |
printf the string into a correctly sized mallocd buffer, and return the buffer | |
int | ast_say_character_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digit_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_say_digits (struct ast_channel *chan, int num, const char *ints, const char *lang) |
int | ast_say_digits_full (struct ast_channel *chan, int num, const char *ints, const char *lang, int audiofd, int ctrlfd) |
int | ast_say_enumeration (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_number (struct ast_channel *chan, int num, const char *ints, const char *language, const char *options) |
int | ast_say_phonetic_str (struct ast_channel *chan, const char *str, const char *ints, const char *lang) |
int | ast_senddigit (struct ast_channel *chan, char digit) |
Send a DTMF digit to a channel Send a DTMF digit to a channel. | |
int | ast_senddigit_begin (struct ast_channel *chan, char digit) |
int | ast_senddigit_end (struct ast_channel *chan, char digit, unsigned int duration) |
int | ast_sendtext (struct ast_channel *chan, const char *text) |
Sends text to a channel Write text to a display on a channel. | |
void | ast_set_callerid (struct ast_channel *chan, const char *callerid, const char *calleridname, const char *ani) |
int | ast_set_read_format (struct ast_channel *chan, int fmt) |
Sets read format on channel chan Set read format for channel to whichever component of "format" is best. | |
void | ast_set_variables (struct ast_channel *chan, struct ast_variable *vars) |
adds a list of channel variables to a channel | |
int | ast_set_write_format (struct ast_channel *chan, int fmt) |
Sets write format on channel chan Set write format for channel to whichever compoent of "format" is best. | |
int | ast_setstate (struct ast_channel *chan, enum ast_channel_state state) |
Change the state of a channel. | |
int | ast_settimeout (struct ast_channel *c, int samples, int(*func)(const void *data), void *data) |
int | ast_shutting_down (void) |
Returns non-zero if Asterisk is being shut down. | |
int | ast_softhangup (struct ast_channel *chan, int cause) |
Softly hangup up a channel. | |
int | ast_softhangup_nolock (struct ast_channel *chan, int cause) |
Softly hangup up a channel (no channel lock). | |
char * | ast_state2str (enum ast_channel_state state) |
Gives the string form of a given channel state. | |
int | ast_str2cause (const char *name) |
Convert a symbolic hangup cause to number. | |
int | ast_tonepair (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
int | ast_tonepair_start (struct ast_channel *chan, int freq1, int freq2, int duration, int vol) |
void | ast_tonepair_stop (struct ast_channel *chan) |
int | ast_transfer (struct ast_channel *chan, char *dest) |
Transfer a channel (if supported). Returns -1 on error, 0 if not supported and 1 if supported and requested. | |
char * | ast_transfercapability2str (int transfercapability) |
Gives the string form of a given transfer capability. | |
void | ast_uninstall_music_functions (void) |
int | ast_waitfor (struct ast_channel *c, int ms) |
Wait for input on a channel. | |
ast_channel * | ast_waitfor_n (struct ast_channel **c, int n, int *ms) |
Waits for input on a group of channels Wait for input on an array of channels for a given # of milliseconds. | |
int | ast_waitfor_n_fd (int *fds, int n, int *ms, int *exception) |
Waits for input on an fd This version works on fd's only. Be careful with it. | |
ast_channel * | ast_waitfor_nandfds (struct ast_channel **c, int n, int *fds, int nfds, int *exception, int *outfd, int *ms) |
Waits for activity on a group of channels. | |
int | ast_waitfordigit (struct ast_channel *c, int ms) |
Waits for a digit. | |
int | ast_waitfordigit_full (struct ast_channel *c, int ms, int audiofd, int cmdfd) |
Wait for a digit Same as ast_waitfordigit() with audio fd for outputting read audio and ctrlfd to monitor for reading. | |
ast_channel * | ast_walk_channel_by_exten_locked (const struct ast_channel *chan, const char *exten, const char *context) |
Get next channel by exten (and optionally context) and lock it. | |
ast_channel * | ast_walk_channel_by_name_prefix_locked (const struct ast_channel *chan, const char *name, const int namelen) |
Get channel by name prefix (locks channel). | |
int | ast_write (struct ast_channel *chan, struct ast_frame *fr) |
Write a frame to a channel This function writes the given frame to the indicated channel. | |
int | ast_write_video (struct ast_channel *chan, struct ast_frame *fr) |
Write video frame to a channel This function writes the given frame to the indicated channel. | |
static void | bridge_playfile (struct ast_channel *chan, struct ast_channel *peer, const char *sound, int remain) |
static struct ast_channel * | channel_find_locked (const struct ast_channel *prev, const char *name, const int namelen, const char *context, const char *exten) |
Helper function to find channels. | |
const char * | channelreloadreason2txt (enum channelreloadreason reason) |
Convert enum channelreloadreason to text string for manager event. | |
static void | clone_variables (struct ast_channel *original, struct ast_channel *clone) |
Clone channel variables from 'clone' channel into 'original' channel. | |
static char * | complete_channeltypes (const char *line, const char *word, int pos, int state) |
static char * | complete_channeltypes_deprecated (const char *line, const char *word, int pos, int state) |
static void | free_cid (struct ast_callerid *cid) |
static void | free_translation (struct ast_channel *clone) |
static int | generator_force (const void *data) |
static void | handle_cause (int cause, int *outstate) |
static int attribute_const | is_visible_indication (enum ast_control_frame_type condition) |
static void | plc_ds_destroy (void *data) |
static void | queue_dtmf_readq (struct ast_channel *chan, struct ast_frame *f) |
static void | report_new_callerid (const struct ast_channel *chan) |
static int | set_format (struct ast_channel *chan, int fmt, int *rawformat, int *format, struct ast_trans_pvt **trans, const int direction) |
static int | should_skip_dtmf (struct ast_channel *chan) |
Determine whether or not we should ignore DTMF in the readq. | |
static int | show_channeltype (int fd, int argc, char *argv[]) |
static int | show_channeltype_deprecated (int fd, int argc, char *argv[]) |
static int | show_channeltypes (int fd, int argc, char *argv[]) |
static void * | silence_generator_alloc (struct ast_channel *chan, void *data) |
static int | silence_generator_generate (struct ast_channel *chan, void *data, int len, int samples) |
static void | silence_generator_release (struct ast_channel *chan, void *data) |
static void | state2str_threadbuf_init (void) |
static void * | tonepair_alloc (struct ast_channel *chan, void *params) |
static int | tonepair_generator (struct ast_channel *chan, void *data, int len, int samples) |
static void | tonepair_release (struct ast_channel *chan, void *params) |
static void | update_bridgepeer (struct ast_channel *c0, struct ast_channel *c1) |
Variables | |
static void(*) | ast_moh_cleanup_ptr (struct ast_channel *) = NULL |
static int(*) | ast_moh_start_ptr (struct ast_channel *, const char *, const char *) = NULL |
static void(*) | ast_moh_stop_ptr (struct ast_channel *) = NULL |
ast_cause | causes [] |
static struct ast_cli_entry | cli_channel [] |
static struct ast_cli_entry | cli_show_channeltype_deprecated |
static struct ast_cli_entry | cli_show_channeltypes_deprecated |
unsigned long | global_fin |
unsigned long | global_fout |
static struct ast_channel_tech | null_tech |
static struct ast_datastore_info | plc_ds_info |
static char | show_channeltype_usage [] |
static char | show_channeltypes_usage [] |
static int | shutting_down |
static struct ast_generator | silence_generator |
static struct ast_threadstorage | state2str_threadbuf = { .once = PTHREAD_ONCE_INIT , .key_init = state2str_threadbuf_init , } |
static struct ast_generator | tonepair |
static int | uniqueint |
Definition in file channel.c.
#define AST_DEFAULT_EMULATE_DTMF_DURATION 100 |
Default amount of time to use when emulating a digit as a begin and end 100ms
Definition at line 89 of file channel.c.
Referenced by __ast_read(), and ast_senddigit().
#define AST_MIN_DTMF_DURATION 80 |
Minimum allowed digit length - 80ms
Definition at line 92 of file channel.c.
Referenced by __ast_read().
#define AST_MIN_DTMF_GAP 45 |
Minimum amount of time between the end of the last digit and the beginning of a new one - 45ms
Definition at line 96 of file channel.c.
Referenced by __ast_read(), and should_skip_dtmf().
#define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" |
#define MONITOR_CONSTANT_DELAY |
#define MONITOR_DELAY 150 * 8 |
#define STATE2STR_BUFSIZE 32 |
static int __ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | fin, | |||
int | head, | |||
struct ast_frame * | after | |||
) | [static] |
Definition at line 908 of file channel.c.
References ast_channel::alertpipe, ast_channel_lock, ast_channel_unlock, AST_CONTROL_END_OF_Q, AST_CONTROL_HANGUP, AST_FLAG_BLOCKING, AST_FRAME_CONTROL, AST_FRAME_NULL, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frdup(), ast_frfree, AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_HEAD_NOLOCK, AST_LIST_INSERT_LIST_AFTER, AST_LIST_INSERT_TAIL, AST_LIST_LAST, AST_LIST_NEXT, AST_LIST_REMOVE, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), ast_test_flag, ast_channel::blocker, errno, f, frames, ast_frame::frametype, ast_channel::name, ast_channel::readq, ast_frame::subclass, and ast_channel::timingfd.
Referenced by __ast_read(), ast_queue_frame(), and ast_queue_frame_head().
00909 { 00910 struct ast_frame *f; 00911 struct ast_frame *cur; 00912 int blah = 1; 00913 unsigned int new_frames = 0; 00914 unsigned int new_voice_frames = 0; 00915 unsigned int queued_frames = 0; 00916 unsigned int queued_voice_frames = 0; 00917 AST_LIST_HEAD_NOLOCK(, ast_frame) frames; 00918 00919 ast_channel_lock(chan); 00920 00921 /* 00922 * Check the last frame on the queue if we are queuing the new 00923 * frames after it. 00924 */ 00925 cur = AST_LIST_LAST(&chan->readq); 00926 if (cur && cur->frametype == AST_FRAME_CONTROL && !head && (!after || after == cur)) { 00927 switch (cur->subclass) { 00928 case AST_CONTROL_END_OF_Q: 00929 if (fin->frametype == AST_FRAME_CONTROL 00930 && fin->subclass == AST_CONTROL_HANGUP) { 00931 /* 00932 * Destroy the end-of-Q marker frame so we can queue the hangup 00933 * frame in its place. 00934 */ 00935 AST_LIST_REMOVE(&chan->readq, cur, frame_list); 00936 ast_frfree(cur); 00937 00938 /* 00939 * This has degenerated to a normal queue append anyway. Since 00940 * we just destroyed the last frame in the queue we must make 00941 * sure that "after" is NULL or bad things will happen. 00942 */ 00943 after = NULL; 00944 break; 00945 } 00946 /* Fall through */ 00947 case AST_CONTROL_HANGUP: 00948 /* Don't queue anything. */ 00949 ast_channel_unlock(chan); 00950 return 0; 00951 default: 00952 break; 00953 } 00954 } 00955 00956 /* Build copies of all the new frames and count them */ 00957 AST_LIST_HEAD_INIT_NOLOCK(&frames); 00958 for (cur = fin; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 00959 if (!(f = ast_frdup(cur))) { 00960 if (AST_LIST_FIRST(&frames)) { 00961 ast_frfree(AST_LIST_FIRST(&frames)); 00962 } 00963 ast_channel_unlock(chan); 00964 return -1; 00965 } 00966 00967 AST_LIST_INSERT_TAIL(&frames, f, frame_list); 00968 new_frames++; 00969 if (f->frametype == AST_FRAME_VOICE) { 00970 new_voice_frames++; 00971 } 00972 } 00973 00974 /* Count how many frames exist on the queue */ 00975 AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) { 00976 queued_frames++; 00977 if (cur->frametype == AST_FRAME_VOICE) { 00978 queued_voice_frames++; 00979 } 00980 } 00981 00982 if ((queued_frames + new_frames > 128 || queued_voice_frames + new_voice_frames > 96)) { 00983 int count = 0; 00984 ast_log(LOG_WARNING, "Exceptionally long %squeue length queuing to %s\n", queued_frames + new_frames > 128 ? "" : "voice ", chan->name); 00985 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->readq, cur, frame_list) { 00986 /* Save the most recent frame */ 00987 if (!AST_LIST_NEXT(cur, frame_list)) { 00988 break; 00989 } else if (cur->frametype == AST_FRAME_VOICE || cur->frametype == AST_FRAME_VIDEO || cur->frametype == AST_FRAME_NULL) { 00990 if (++count > 64) { 00991 break; 00992 } 00993 AST_LIST_REMOVE_CURRENT(&chan->readq, frame_list); 00994 ast_frfree(cur); 00995 } 00996 } 00997 AST_LIST_TRAVERSE_SAFE_END; 00998 } 00999 01000 if (after) { 01001 AST_LIST_INSERT_LIST_AFTER(&chan->readq, &frames, after, frame_list); 01002 } else { 01003 if (head) { 01004 AST_LIST_APPEND_LIST(&frames, &chan->readq, frame_list); 01005 AST_LIST_HEAD_INIT_NOLOCK(&chan->readq); 01006 } 01007 AST_LIST_APPEND_LIST(&chan->readq, &frames, frame_list); 01008 } 01009 01010 if (chan->alertpipe[1] > -1) { 01011 if (write(chan->alertpipe[1], &blah, new_frames * sizeof(blah)) != (new_frames * sizeof(blah))) { 01012 ast_log(LOG_WARNING, "Unable to write to alert pipe on %s (qlen = %d): %s!\n", 01013 chan->name, queued_frames, strerror(errno)); 01014 } 01015 #ifdef HAVE_DAHDI 01016 } else if (chan->timingfd > -1) { 01017 while (new_frames--) { 01018 ioctl(chan->timingfd, DAHDI_TIMERPING, &blah); 01019 } 01020 #endif 01021 } else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01022 pthread_kill(chan->blocker, SIGURG); 01023 } 01024 01025 ast_channel_unlock(chan); 01026 01027 return 0; 01028 }
static struct ast_frame* __ast_read | ( | struct ast_channel * | chan, | |
int | dropaudio | |||
) | [static] |
Definition at line 2211 of file channel.c.
References __ast_queue_frame(), ast_channel::_softhangup, ast_channel::_state, ast_channel::alertpipe, ast_audiohook_detach_list(), AST_AUDIOHOOK_DIRECTION_READ, ast_audiohook_write_list(), ast_audiohook_write_list_empty(), ast_bridged_channel(), ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_END_OF_Q, AST_CONTROL_HANGUP, ast_deactivate_generator(), AST_DEFAULT_EMULATE_DTMF_DURATION, ast_do_masquerade(), AST_FLAG_DEFER_DTMF, AST_FLAG_EMULATE_DTMF, AST_FLAG_END_DTMF_ONLY, AST_FLAG_EXCEPTION, AST_FLAG_IN_DTMF, AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_NULL, AST_FRAME_VOICE, ast_frfree, AST_GENERATOR_FD, ast_getformatname(), ast_getformatname_multiple(), AST_LIST_EMPTY, AST_LIST_FIRST, AST_LIST_LAST, AST_LIST_NEXT, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), AST_MIN_DTMF_DURATION, AST_MIN_DTMF_GAP, AST_MONITOR_RUNNING, ast_null_frame, ast_queue_control(), ast_queue_frame(), ast_queue_frame_head(), ast_read_generator_actions(), ast_seekstream(), ast_set_flag, ast_setstate(), AST_SOFTHANGUP_DEV, AST_STATE_UP, ast_test_flag, AST_TIMING_FD, ast_translate(), ast_tvdiff_ms(), ast_tvnow(), ast_tvzero(), ast_writestream(), ast_channel::audiohooks, ast_channel::blocker, ast_frame::data, DEBUGCHAN_FLAG, ast_channel::dtmf_tv, ast_channel::dtmff, ast_channel::emulate_dtmf_digit, ast_channel::emulate_dtmf_duration, errno, ast_channel_tech::exception, f, ast_channel::fdno, ast_channel::fds, ast_channel::fin, ast_frame::flags, FRAMECOUNT_INC, ast_generator::generate, ast_channel::generator, ast_channel::generatordata, ast_channel::insmpl, LOG_DEBUG, LOG_DTMF, LOG_ERROR, LOG_NOTICE, ast_channel::masq, ast_channel::monitor, MONITOR_DELAY, ast_channel::name, ast_channel::nativeformats, option_debug, ast_channel::outsmpl, queue_dtmf_readq(), ast_channel_tech::read, ast_channel_monitor::read_stream, ast_channel::readq, ast_channel::readtrans, SEEK_FORCECUR, should_skip_dtmf(), ast_channel_monitor::state, ast_channel::tech, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_read(), and ast_read_noaudio().
02212 { 02213 struct ast_frame *f = NULL; /* the return value */ 02214 int blah; 02215 int prestate; 02216 int count = 0; 02217 02218 /* this function is very long so make sure there is only one return 02219 * point at the end (there are only two exceptions to this). 02220 */ 02221 while(ast_channel_trylock(chan)) { 02222 if(count++ > 10) 02223 /*cannot goto done since the channel is not locked*/ 02224 return &ast_null_frame; 02225 usleep(1); 02226 } 02227 02228 if (chan->masq) { 02229 if (ast_do_masquerade(chan)) 02230 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 02231 else 02232 f = &ast_null_frame; 02233 goto done; 02234 } 02235 02236 /* Stop if we're a zombie or need a soft hangup */ 02237 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02238 if (chan->generator) 02239 ast_deactivate_generator(chan); 02240 02241 /* 02242 * It is possible for chan->_softhangup to be set and there 02243 * still be control frames that need to be read. Instead of 02244 * just going to 'done' in the case of ast_check_hangup(), we 02245 * need to queue the end-of-Q frame so that it can mark the end 02246 * of the read queue. If there are frames to be read, 02247 * ast_queue_control() will be called repeatedly, but will only 02248 * queue the first end-of-Q frame. 02249 */ 02250 if (chan->_softhangup) { 02251 ast_queue_control(chan, AST_CONTROL_END_OF_Q); 02252 } else { 02253 goto done; 02254 } 02255 } else { 02256 #ifdef AST_DEVMODE 02257 /* 02258 * The ast_waitfor() code records which of the channel's file 02259 * descriptors reported that data is available. In theory, 02260 * ast_read() should only be called after ast_waitfor() reports 02261 * that a channel has data available for reading. However, 02262 * there still may be some edge cases throughout the code where 02263 * ast_read() is called improperly. This can potentially cause 02264 * problems, so if this is a developer build, make a lot of 02265 * noise if this happens so that it can be addressed. 02266 * 02267 * One of the potential problems is blocking on a dead channel. 02268 */ 02269 if (chan->fdno == -1) { 02270 ast_log(LOG_ERROR, 02271 "ast_read() on chan '%s' called with no recorded file descriptor.\n", 02272 chan->name); 02273 } 02274 #endif 02275 } 02276 02277 prestate = chan->_state; 02278 02279 /* Read and ignore anything on the alertpipe, but read only 02280 one sizeof(blah) per frame that we send from it */ 02281 if (chan->alertpipe[0] > -1) { 02282 int flags = fcntl(chan->alertpipe[0], F_GETFL); 02283 /* For some odd reason, the alertpipe occasionally loses nonblocking status, 02284 * which immediately causes a deadlock scenario. Detect and prevent this. */ 02285 if ((flags & O_NONBLOCK) == 0) { 02286 ast_log(LOG_ERROR, "Alertpipe on channel %s lost O_NONBLOCK?!!\n", chan->name); 02287 if (fcntl(chan->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 02288 ast_log(LOG_WARNING, "Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 02289 f = &ast_null_frame; 02290 goto done; 02291 } 02292 } 02293 if (read(chan->alertpipe[0], &blah, sizeof(blah)) < 0) { 02294 if (errno != EINTR && errno != EAGAIN) 02295 ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno)); 02296 } 02297 } 02298 02299 #ifdef HAVE_DAHDI 02300 if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02301 int res; 02302 02303 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02304 blah = -1; 02305 /* IF we can't get event, assume it's an expired as-per the old interface */ 02306 res = ioctl(chan->timingfd, DAHDI_GETEVENT, &blah); 02307 if (res) 02308 blah = DAHDI_EVENT_TIMER_EXPIRED; 02309 02310 if (blah == DAHDI_EVENT_TIMER_PING) { 02311 if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) { 02312 /* Acknowledge PONG unless we need it again */ 02313 if (ioctl(chan->timingfd, DAHDI_TIMERPONG, &blah)) { 02314 ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno)); 02315 } 02316 } 02317 } else if (blah == DAHDI_EVENT_TIMER_EXPIRED) { 02318 ioctl(chan->timingfd, DAHDI_TIMERACK, &blah); 02319 if (chan->timingfunc) { 02320 /* save a copy of func/data before unlocking the channel */ 02321 int (*func)(const void *) = chan->timingfunc; 02322 void *data = chan->timingdata; 02323 chan->fdno = -1; 02324 ast_channel_unlock(chan); 02325 func(data); 02326 } else { 02327 blah = 0; 02328 ioctl(chan->timingfd, DAHDI_TIMERCONFIG, &blah); 02329 chan->timingdata = NULL; 02330 chan->fdno = -1; 02331 ast_channel_unlock(chan); 02332 } 02333 /* cannot 'goto done' because the channel is already unlocked */ 02334 return &ast_null_frame; 02335 } else 02336 ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name); 02337 } else 02338 #endif 02339 if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) { 02340 /* if the AST_GENERATOR_FD is set, call the generator with args 02341 * set to -1 so it can do whatever it needs to. 02342 */ 02343 void *tmp = chan->generatordata; 02344 chan->generatordata = NULL; /* reset to let ast_write get through */ 02345 chan->generator->generate(chan, tmp, -1, -1); 02346 chan->generatordata = tmp; 02347 f = &ast_null_frame; 02348 chan->fdno = -1; 02349 goto done; 02350 } 02351 02352 /* Check for pending read queue */ 02353 if (!AST_LIST_EMPTY(&chan->readq)) { 02354 int skip_dtmf = should_skip_dtmf(chan); 02355 02356 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->readq, f, frame_list) { 02357 /* We have to be picky about which frame we pull off of the readq because 02358 * there are cases where we want to leave DTMF frames on the queue until 02359 * some later time. */ 02360 02361 if ( (f->frametype == AST_FRAME_DTMF_BEGIN || f->frametype == AST_FRAME_DTMF_END) && skip_dtmf) { 02362 continue; 02363 } 02364 02365 AST_LIST_REMOVE_CURRENT(&chan->readq, frame_list); 02366 break; 02367 } 02368 AST_LIST_TRAVERSE_SAFE_END; 02369 02370 if (!f) { 02371 /* There were no acceptable frames on the readq. */ 02372 f = &ast_null_frame; 02373 if (chan->alertpipe[0] > -1) { 02374 int poke = 0; 02375 /* Restore the state of the alertpipe since we aren't ready for any 02376 * of the frames in the readq. */ 02377 if (write(chan->alertpipe[1], &poke, sizeof(poke)) != sizeof(poke)) { 02378 ast_log(LOG_ERROR, "Failed to write to alertpipe: %s\n", strerror(errno)); 02379 } 02380 } 02381 } 02382 02383 /* Interpret hangup and end-of-Q frames to return NULL */ 02384 /* XXX why not the same for frames from the channel ? */ 02385 if (f->frametype == AST_FRAME_CONTROL) { 02386 switch (f->subclass) { 02387 case AST_CONTROL_HANGUP: 02388 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02389 /* Fall through */ 02390 case AST_CONTROL_END_OF_Q: 02391 ast_frfree(f); 02392 f = NULL; 02393 break; 02394 default: 02395 break; 02396 } 02397 } 02398 } else { 02399 chan->blocker = pthread_self(); 02400 if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) { 02401 if (chan->tech->exception) 02402 f = chan->tech->exception(chan); 02403 else { 02404 ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name); 02405 f = &ast_null_frame; 02406 } 02407 /* Clear the exception flag */ 02408 ast_clear_flag(chan, AST_FLAG_EXCEPTION); 02409 } else if (chan->tech->read) 02410 f = chan->tech->read(chan); 02411 else 02412 ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name); 02413 } 02414 02415 /* 02416 * Reset the recorded file descriptor that triggered this read so that we can 02417 * easily detect when ast_read() is called without properly using ast_waitfor(). 02418 */ 02419 chan->fdno = -1; 02420 02421 if (f) { 02422 struct ast_frame *readq_tail = AST_LIST_LAST(&chan->readq); 02423 02424 /* if the channel driver returned more than one frame, stuff the excess 02425 into the readq for the next ast_read call 02426 */ 02427 if (AST_LIST_NEXT(f, frame_list)) { 02428 ast_queue_frame(chan, AST_LIST_NEXT(f, frame_list)); 02429 ast_frfree(AST_LIST_NEXT(f, frame_list)); 02430 AST_LIST_NEXT(f, frame_list) = NULL; 02431 } 02432 02433 switch (f->frametype) { 02434 case AST_FRAME_CONTROL: 02435 if (f->subclass == AST_CONTROL_ANSWER) { 02436 if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) { 02437 if (option_debug) 02438 ast_log(LOG_DEBUG, "Ignoring answer on an inbound call!\n"); 02439 ast_frfree(f); 02440 f = &ast_null_frame; 02441 } else if (prestate == AST_STATE_UP && ast_bridged_channel(chan)) { 02442 if (option_debug) 02443 ast_log(LOG_DEBUG, "Dropping duplicate answer!\n"); 02444 ast_frfree(f); 02445 f = &ast_null_frame; 02446 } else { 02447 /* Answer the CDR */ 02448 ast_setstate(chan, AST_STATE_UP); 02449 /* removed a call to ast_cdr_answer(chan->cdr) from here. */ 02450 } 02451 } 02452 break; 02453 case AST_FRAME_DTMF_END: 02454 ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len); 02455 /* Queue it up if DTMF is deferred, or if DTMF emulation is forced. */ 02456 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF) || ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02457 queue_dtmf_readq(chan, f); 02458 ast_frfree(f); 02459 f = &ast_null_frame; 02460 } else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) { 02461 if (!ast_tvzero(chan->dtmf_tv) && 02462 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02463 /* If it hasn't been long enough, defer this digit */ 02464 queue_dtmf_readq(chan, f); 02465 ast_frfree(f); 02466 f = &ast_null_frame; 02467 } else { 02468 /* There was no begin, turn this into a begin and send the end later */ 02469 f->frametype = AST_FRAME_DTMF_BEGIN; 02470 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02471 chan->emulate_dtmf_digit = f->subclass; 02472 chan->dtmf_tv = ast_tvnow(); 02473 if (f->len) { 02474 if (f->len > AST_MIN_DTMF_DURATION) 02475 chan->emulate_dtmf_duration = f->len; 02476 else 02477 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION; 02478 } else 02479 chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION; 02480 ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name); 02481 } 02482 if (chan->audiohooks) { 02483 struct ast_frame *old_frame = f; 02484 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02485 if (old_frame != f) 02486 ast_frfree(old_frame); 02487 } 02488 } else { 02489 struct timeval now = ast_tvnow(); 02490 if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02491 ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name); 02492 ast_clear_flag(chan, AST_FLAG_IN_DTMF); 02493 if (!f->len) 02494 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02495 02496 /* detect tones that were received on 02497 * the wire with durations shorter than 02498 * AST_MIN_DTMF_DURATION and set f->len 02499 * to the actual duration of the DTMF 02500 * frames on the wire. This will cause 02501 * dtmf emulation to be triggered later 02502 * on. 02503 */ 02504 if (ast_tvdiff_ms(now, chan->dtmf_tv) < AST_MIN_DTMF_DURATION) { 02505 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02506 ast_log(LOG_DTMF, "DTMF end '%c' detected to have actual duration %ld on the wire, emulation will be triggered on %s\n", f->subclass, f->len, chan->name); 02507 } 02508 } else if (!f->len) { 02509 ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name); 02510 f->len = AST_MIN_DTMF_DURATION; 02511 } 02512 if (f->len < AST_MIN_DTMF_DURATION && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) { 02513 ast_log(LOG_DTMF, "DTMF end '%c' has duration %ld but want minimum %d, emulating on %s\n", f->subclass, f->len, AST_MIN_DTMF_DURATION, chan->name); 02514 ast_set_flag(chan, AST_FLAG_EMULATE_DTMF); 02515 chan->emulate_dtmf_digit = f->subclass; 02516 chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len; 02517 ast_frfree(f); 02518 f = &ast_null_frame; 02519 } else { 02520 ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name); 02521 if (f->len < AST_MIN_DTMF_DURATION) { 02522 f->len = AST_MIN_DTMF_DURATION; 02523 } 02524 chan->dtmf_tv = now; 02525 } 02526 if (chan->audiohooks) { 02527 struct ast_frame *old_frame = f; 02528 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02529 if (old_frame != f) 02530 ast_frfree(old_frame); 02531 } 02532 } 02533 break; 02534 case AST_FRAME_DTMF_BEGIN: 02535 ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name); 02536 if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 02537 (!ast_tvzero(chan->dtmf_tv) && 02538 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) { 02539 ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name); 02540 ast_frfree(f); 02541 f = &ast_null_frame; 02542 } else { 02543 ast_set_flag(chan, AST_FLAG_IN_DTMF); 02544 chan->dtmf_tv = ast_tvnow(); 02545 ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name); 02546 } 02547 break; 02548 case AST_FRAME_NULL: 02549 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02550 * is reached , because we want to make sure we pass at least one 02551 * voice frame through before starting the next digit, to ensure a gap 02552 * between DTMF digits. */ 02553 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) { 02554 struct timeval now = ast_tvnow(); 02555 if (!chan->emulate_dtmf_duration) { 02556 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02557 chan->emulate_dtmf_digit = 0; 02558 } else if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02559 chan->emulate_dtmf_duration = 0; 02560 ast_frfree(f); 02561 f = &chan->dtmff; 02562 f->frametype = AST_FRAME_DTMF_END; 02563 f->subclass = chan->emulate_dtmf_digit; 02564 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02565 chan->dtmf_tv = now; 02566 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02567 chan->emulate_dtmf_digit = 0; 02568 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02569 if (chan->audiohooks) { 02570 struct ast_frame *old_frame = f; 02571 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02572 if (old_frame != f) { 02573 ast_frfree(old_frame); 02574 } 02575 } 02576 } 02577 } 02578 break; 02579 case AST_FRAME_VOICE: 02580 /* The EMULATE_DTMF flag must be cleared here as opposed to when the duration 02581 * is reached , because we want to make sure we pass at least one 02582 * voice frame through before starting the next digit, to ensure a gap 02583 * between DTMF digits. */ 02584 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) { 02585 ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF); 02586 chan->emulate_dtmf_digit = 0; 02587 } 02588 02589 if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02590 if (dropaudio) 02591 ast_read_generator_actions(chan, f); 02592 ast_frfree(f); 02593 f = &ast_null_frame; 02594 } 02595 02596 if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) { 02597 struct timeval now = ast_tvnow(); 02598 if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) { 02599 chan->emulate_dtmf_duration = 0; 02600 ast_frfree(f); 02601 f = &chan->dtmff; 02602 f->frametype = AST_FRAME_DTMF_END; 02603 f->subclass = chan->emulate_dtmf_digit; 02604 f->len = ast_tvdiff_ms(now, chan->dtmf_tv); 02605 chan->dtmf_tv = now; 02606 if (chan->audiohooks) { 02607 struct ast_frame *old_frame = f; 02608 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02609 if (old_frame != f) 02610 ast_frfree(old_frame); 02611 } 02612 ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name); 02613 } else { 02614 /* Drop voice frames while we're still in the middle of the digit */ 02615 ast_frfree(f); 02616 f = &ast_null_frame; 02617 } 02618 } else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) { 02619 /* This frame is not one of the current native formats -- drop it on the floor */ 02620 char to[200]; 02621 ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n", 02622 chan->name, ast_getformatname(f->subclass), ast_getformatname_multiple(to, sizeof(to), chan->nativeformats)); 02623 ast_frfree(f); 02624 f = &ast_null_frame; 02625 } else if ((f->frametype == AST_FRAME_VOICE)) { 02626 if (chan->audiohooks) { 02627 struct ast_frame *old_frame = f; 02628 f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f); 02629 if (old_frame != f) 02630 ast_frfree(old_frame); 02631 } 02632 if (chan->monitor && chan->monitor->read_stream ) { 02633 /* XXX what does this do ? */ 02634 #ifndef MONITOR_CONSTANT_DELAY 02635 int jump = chan->outsmpl - chan->insmpl - 4 * f->samples; 02636 if (jump >= 0) { 02637 jump = chan->outsmpl - chan->insmpl; 02638 if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1) 02639 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02640 chan->insmpl += jump + f->samples; 02641 } else 02642 chan->insmpl+= f->samples; 02643 #else 02644 int jump = chan->outsmpl - chan->insmpl; 02645 if (jump - MONITOR_DELAY >= 0) { 02646 if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1) 02647 ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n"); 02648 chan->insmpl += jump; 02649 } else 02650 chan->insmpl += f->samples; 02651 #endif 02652 if (chan->monitor->state == AST_MONITOR_RUNNING) { 02653 if (ast_writestream(chan->monitor->read_stream, f) < 0) 02654 ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n"); 02655 } 02656 } 02657 02658 if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL) { 02659 f = &ast_null_frame; 02660 } 02661 02662 /* it is possible for the translation process on chan->readtrans to have 02663 produced multiple frames from the single input frame we passed it; if 02664 this happens, queue the additional frames *before* the frames we may 02665 have queued earlier. if the readq was empty, put them at the head of 02666 the queue, and if it was not, put them just after the frame that was 02667 at the end of the queue. 02668 */ 02669 if (AST_LIST_NEXT(f, frame_list)) { 02670 if (!readq_tail) { 02671 ast_queue_frame_head(chan, AST_LIST_NEXT(f, frame_list)); 02672 } else { 02673 __ast_queue_frame(chan, AST_LIST_NEXT(f, frame_list), 0, readq_tail); 02674 } 02675 ast_frfree(AST_LIST_NEXT(f, frame_list)); 02676 AST_LIST_NEXT(f, frame_list) = NULL; 02677 } 02678 02679 /* Run generator sitting on the line if timing device not available 02680 * and synchronous generation of outgoing frames is necessary */ 02681 ast_read_generator_actions(chan, f); 02682 } 02683 default: 02684 /* Just pass it on! */ 02685 break; 02686 } 02687 } else { 02688 /* Make sure we always return NULL in the future */ 02689 if (!chan->_softhangup) { 02690 chan->_softhangup |= AST_SOFTHANGUP_DEV; 02691 } 02692 if (chan->generator) 02693 ast_deactivate_generator(chan); 02694 /* We no longer End the CDR here */ 02695 } 02696 02697 /* High bit prints debugging */ 02698 if (chan->fin & DEBUGCHAN_FLAG) 02699 ast_frame_dump(chan->name, f, "<<"); 02700 chan->fin = FRAMECOUNT_INC(chan->fin); 02701 02702 done: 02703 if (chan->audiohooks && ast_audiohook_write_list_empty(chan->audiohooks)) { 02704 /* The list gets recreated if audiohooks are added again later */ 02705 ast_audiohook_detach_list(chan->audiohooks); 02706 chan->audiohooks = NULL; 02707 } 02708 ast_channel_unlock(chan); 02709 return f; 02710 }
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 3587 of file channel.c.
References ast_channel::_state, outgoing_helper::account, ast_call(), ast_call_forward(), AST_CAUSE_NO_ANSWER, ast_cdr_alloc(), ast_cdr_answer(), ast_cdr_busy(), ast_cdr_disposition(), ast_cdr_end(), ast_cdr_failed(), AST_CDR_FLAG_ORIGINATED, ast_cdr_init(), ast_cdr_setaccount(), ast_cdr_setapp(), ast_cdr_start(), ast_cdr_update(), ast_channel_inherit_variables(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCCHANGE, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, ast_copy_string(), AST_FRAME_CONTROL, ast_frfree, ast_hangup(), ast_log(), ast_read(), ast_request(), ast_set_callerid(), ast_set_flag, ast_set_variables(), AST_STATE_UP, ast_strlen_zero(), ast_waitfor(), ast_channel::call_forward, ast_channel::cdr, outgoing_helper::cid_name, outgoing_helper::cid_num, outgoing_helper::context, ast_channel::context, outgoing_helper::exten, ast_channel::exten, f, handle_cause(), ast_channel::hangupcause, LOG_NOTICE, outgoing_helper::parent_channel, outgoing_helper::priority, ast_channel::priority, and outgoing_helper::vars.
Referenced by ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_request_and_dial(), and parkandannounce_exec().
03588 { 03589 int dummy_outstate; 03590 int cause = 0; 03591 struct ast_channel *chan; 03592 int res = 0; 03593 int last_subclass = 0; 03594 03595 if (outstate) 03596 *outstate = 0; 03597 else 03598 outstate = &dummy_outstate; /* make outstate always a valid pointer */ 03599 03600 chan = ast_request(type, format, data, &cause); 03601 if (!chan) { 03602 ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data); 03603 handle_cause(cause, outstate); 03604 return NULL; 03605 } 03606 03607 if (oh) { 03608 if (oh->vars) 03609 ast_set_variables(chan, oh->vars); 03610 /* XXX why is this necessary, for the parent_channel perhaps ? */ 03611 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) 03612 ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num); 03613 if (oh->parent_channel) 03614 ast_channel_inherit_variables(oh->parent_channel, chan); 03615 if (oh->account) 03616 ast_cdr_setaccount(chan, oh->account); 03617 } 03618 ast_set_callerid(chan, cid_num, cid_name, cid_num); 03619 ast_set_flag(chan->cdr, AST_CDR_FLAG_ORIGINATED); 03620 03621 if (ast_call(chan, data, 0)) { /* ast_call failed... */ 03622 ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data); 03623 } else { 03624 res = 1; /* mark success in case chan->_state is already AST_STATE_UP */ 03625 while (timeout && chan->_state != AST_STATE_UP) { 03626 struct ast_frame *f; 03627 res = ast_waitfor(chan, timeout); 03628 if (res == 0) { /* timeout, treat it like ringing */ 03629 *outstate = AST_CONTROL_RINGING; 03630 break; 03631 } 03632 if (res < 0) /* error or done */ 03633 break; 03634 if (timeout > -1) 03635 timeout = res; 03636 if (!ast_strlen_zero(chan->call_forward)) { 03637 if (!(chan = ast_call_forward(NULL, chan, NULL, format, oh, outstate))) { 03638 return NULL; 03639 } 03640 continue; 03641 } 03642 03643 f = ast_read(chan); 03644 if (!f) { 03645 *outstate = AST_CONTROL_HANGUP; 03646 res = 0; 03647 break; 03648 } 03649 if (f->frametype == AST_FRAME_CONTROL) { 03650 switch (f->subclass) { 03651 case AST_CONTROL_RINGING: /* record but keep going */ 03652 *outstate = f->subclass; 03653 break; 03654 03655 case AST_CONTROL_BUSY: 03656 ast_cdr_busy(chan->cdr); 03657 *outstate = f->subclass; 03658 timeout = 0; 03659 break; 03660 03661 case AST_CONTROL_CONGESTION: 03662 ast_cdr_failed(chan->cdr); 03663 *outstate = f->subclass; 03664 timeout = 0; 03665 break; 03666 03667 case AST_CONTROL_ANSWER: 03668 ast_cdr_answer(chan->cdr); 03669 *outstate = f->subclass; 03670 timeout = 0; /* trick to force exit from the while() */ 03671 break; 03672 03673 /* Ignore these */ 03674 case AST_CONTROL_PROGRESS: 03675 case AST_CONTROL_PROCEEDING: 03676 case AST_CONTROL_HOLD: 03677 case AST_CONTROL_UNHOLD: 03678 case AST_CONTROL_VIDUPDATE: 03679 case AST_CONTROL_SRCUPDATE: 03680 case AST_CONTROL_SRCCHANGE: 03681 case -1: /* Ignore -- just stopping indications */ 03682 break; 03683 03684 default: 03685 ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass); 03686 } 03687 last_subclass = f->subclass; 03688 } 03689 ast_frfree(f); 03690 } 03691 } 03692 03693 /* Final fixups */ 03694 if (oh) { 03695 if (!ast_strlen_zero(oh->context)) 03696 ast_copy_string(chan->context, oh->context, sizeof(chan->context)); 03697 if (!ast_strlen_zero(oh->exten)) 03698 ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten)); 03699 if (oh->priority) 03700 chan->priority = oh->priority; 03701 } 03702 if (chan->_state == AST_STATE_UP) 03703 *outstate = AST_CONTROL_ANSWER; 03704 03705 if (res <= 0) { 03706 if ( AST_CONTROL_RINGING == last_subclass ) 03707 chan->hangupcause = AST_CAUSE_NO_ANSWER; 03708 if (!chan->cdr && (chan->cdr = ast_cdr_alloc())) 03709 ast_cdr_init(chan->cdr, chan); 03710 if (chan->cdr) { 03711 char tmp[256]; 03712 snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data); 03713 ast_cdr_setapp(chan->cdr,"Dial",tmp); 03714 ast_cdr_update(chan); 03715 ast_cdr_start(chan->cdr); 03716 ast_cdr_end(chan->cdr); 03717 /* If the cause wasn't handled properly */ 03718 if (ast_cdr_disposition(chan->cdr,chan->hangupcause)) 03719 ast_cdr_failed(chan->cdr); 03720 } 03721 ast_hangup(chan); 03722 chan = NULL; 03723 } 03724 return chan; 03725 }
static void adjust_frame_for_plc | ( | struct ast_channel * | chan, | |
struct ast_frame * | frame, | |||
struct ast_datastore * | datastore | |||
) | [static] |
Definition at line 3051 of file channel.c.
References ast_calloc, ast_channel_datastore_free(), ast_channel_datastore_remove(), ast_free, AST_FRIENDLY_OFFSET, ast_frame::data, ast_datastore::data, ast_frame::datalen, plc_ds::num_samples, ast_frame::offset, plc_fillin(), plc_rx(), plc_ds::plc_state, ast_frame::samples, and plc_ds::samples_buf.
Referenced by apply_plc().
03052 { 03053 int num_new_samples = frame->samples; 03054 struct plc_ds *plc = datastore->data; 03055 03056 /* As a general note, let me explain the somewhat odd calculations used when taking 03057 * the frame offset into account here. According to documentation in frame.h, the frame's 03058 * offset field indicates the number of bytes that the audio is offset. The plc->samples_buf 03059 * is not an array of bytes, but rather an array of 16-bit integers since it holds SLIN 03060 * samples. So I had two choices to make here with the offset. 03061 * 03062 * 1. Make the offset AST_FRIENDLY_OFFSET bytes. The main downside for this is that 03063 * I can't just add AST_FRIENDLY_OFFSET to the plc->samples_buf and have the pointer 03064 * arithmetic come out right. I would have to do some odd casting or division for this to 03065 * work as I wanted. 03066 * 2. Make the offset AST_FRIENDLY_OFFSET * 2 bytes. This allows the pointer arithmetic 03067 * to work out better with the plc->samples_buf. The downside here is that the buffer's 03068 * allocation contains an extra 64 bytes of unused space. 03069 * 03070 * I decided to go with option 2. This is why in the calloc statement and the statement that 03071 * sets the frame's offset, AST_FRIENDLY_OFFSET is multiplied by 2. 03072 */ 03073 03074 /* If this audio frame has no samples to fill in, ignore it */ 03075 if (!num_new_samples) { 03076 return; 03077 } 03078 03079 /* First, we need to be sure that our buffer is large enough to accomodate 03080 * the samples we need to fill in. This will likely only occur on the first 03081 * frame we write. 03082 */ 03083 if (plc->num_samples < num_new_samples) { 03084 ast_free(plc->samples_buf); 03085 plc->samples_buf = ast_calloc(1, (num_new_samples * sizeof(*plc->samples_buf)) + (AST_FRIENDLY_OFFSET * 2)); 03086 if (!plc->samples_buf) { 03087 ast_channel_datastore_remove(chan, datastore); 03088 ast_channel_datastore_free(datastore); 03089 return; 03090 } 03091 plc->num_samples = num_new_samples; 03092 } 03093 03094 if (frame->datalen == 0) { 03095 plc_fillin(&plc->plc_state, plc->samples_buf + AST_FRIENDLY_OFFSET, frame->samples); 03096 frame->data = plc->samples_buf + AST_FRIENDLY_OFFSET; 03097 frame->datalen = num_new_samples * 2; 03098 frame->offset = AST_FRIENDLY_OFFSET * 2; 03099 } else { 03100 plc_rx(&plc->plc_state, frame->data, frame->samples); 03101 } 03102 }
static void apply_plc | ( | struct ast_channel * | chan, | |
struct ast_frame * | frame | |||
) | [static] |
Definition at line 3104 of file channel.c.
References adjust_frame_for_plc(), ast_calloc, ast_channel_datastore_add(), ast_channel_datastore_alloc(), ast_channel_datastore_find(), ast_channel_datastore_free(), ast_datastore::data, and plc_ds_info.
Referenced by ast_write().
03105 { 03106 struct ast_datastore *datastore; 03107 struct plc_ds *plc; 03108 03109 datastore = ast_channel_datastore_find(chan, &plc_ds_info, NULL); 03110 if (datastore) { 03111 plc = datastore->data; 03112 adjust_frame_for_plc(chan, frame, datastore); 03113 return; 03114 } 03115 03116 datastore = ast_channel_datastore_alloc(&plc_ds_info, NULL); 03117 if (!datastore) { 03118 return; 03119 } 03120 plc = ast_calloc(1, sizeof(*plc)); 03121 if (!plc) { 03122 ast_channel_datastore_free(datastore); 03123 return; 03124 } 03125 datastore->data = plc; 03126 ast_channel_datastore_add(chan, datastore); 03127 adjust_frame_for_plc(chan, frame, datastore); 03128 }
int ast_activate_generator | ( | struct ast_channel * | chan, | |
struct ast_generator * | gen, | |||
void * | params | |||
) |
Activate a given generator
Definition at line 1820 of file channel.c.
References ast_generator::alloc, ast_channel_lock, ast_channel_unlock, ast_prod(), ast_settimeout(), gen, ast_channel::generator, generator_force(), ast_channel::generatordata, and ast_generator::release.
Referenced by app_exec(), ast_channel_start_silence_generator(), ast_linear_stream(), ast_playtones_start(), ast_tonepair_start(), channel_spy(), local_ast_moh_start(), and old_milliwatt_exec().
01821 { 01822 int res = 0; 01823 01824 ast_channel_lock(chan); 01825 if (chan->generatordata) { 01826 if (chan->generator && chan->generator->release) 01827 chan->generator->release(chan, chan->generatordata); 01828 chan->generatordata = NULL; 01829 } 01830 if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) { 01831 res = -1; 01832 } 01833 if (!res) { 01834 ast_settimeout(chan, 160, generator_force, chan); 01835 chan->generator = gen; 01836 } 01837 ast_channel_unlock(chan); 01838 01839 ast_prod(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 443 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, and AST_LIST_UNLOCK.
Referenced by action_corestatus(), dahdi_restart(), handle_show_settings(), and quit_handler().
00444 { 00445 struct ast_channel *c; 00446 int cnt = 0; 00447 AST_LIST_LOCK(&channels); 00448 AST_LIST_TRAVERSE(&channels, c, chan_list) 00449 cnt++; 00450 AST_LIST_UNLOCK(&channels); 00451 return cnt; 00452 }
int ast_answer | ( | struct ast_channel * | chan | ) |
Answer a ringing call.
chan | channel to answer This function answers a channel and handles all necessary call setup functions. |
Definition at line 1741 of file channel.c.
References ast_channel::_state, ast_channel_tech::answer, ast_cdr_answer(), ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, ast_indicate(), ast_setstate(), AST_STATE_RING, AST_STATE_RINGING, AST_STATE_UP, ast_test_flag, ast_channel::cdr, ast_channel::tech, and ast_channel::visible_indication.
Referenced by __login_exec(), agi_exec_full(), alarmreceiver_exec(), answer_trunk_chan(), app_exec(), ast_bridge_call(), ast_control_streamfile(), auth_exec(), background_detect_exec(), builtin_parkcall(), common_exec(), conf_exec(), count_exec(), dictate_exec(), directory_exec(), disa_exec(), exec(), features_answer(), handle_answer(), ices_exec(), old_milliwatt_exec(), park_call_exec(), park_exec(), pbx_builtin_answer(), pbx_builtin_background(), pickup_do(), playback_exec(), privacy_exec(), read_exec(), sayunixtime_exec(), send_waveform_to_channel(), skel_exec(), sla_station_exec(), speech_background(), testclient_exec(), testserver_exec(), vm_exec(), vm_execmain(), waitforsilence_exec(), and zapateller_exec().
01742 { 01743 int res = 0; 01744 ast_channel_lock(chan); 01745 /* You can't answer an outbound call */ 01746 if (ast_test_flag(chan, AST_FLAG_OUTGOING)) { 01747 ast_channel_unlock(chan); 01748 return 0; 01749 } 01750 /* Stop if we're a zombie or need a soft hangup */ 01751 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 01752 ast_channel_unlock(chan); 01753 return -1; 01754 } 01755 switch(chan->_state) { 01756 case AST_STATE_RINGING: 01757 case AST_STATE_RING: 01758 if (chan->tech->answer) 01759 res = chan->tech->answer(chan); 01760 ast_setstate(chan, AST_STATE_UP); 01761 ast_cdr_answer(chan->cdr); 01762 break; 01763 case AST_STATE_UP: 01764 break; 01765 default: 01766 break; 01767 } 01768 ast_indicate(chan, -1); 01769 chan->visible_indication = 0; 01770 ast_channel_unlock(chan); 01771 return res; 01772 }
void ast_begin_shutdown | ( | int | hangup | ) |
Initiate system shutdown.
Initiate system shutdown -- prevents new channels from being allocated. If "hangup" is non-zero, all existing channels will receive soft hangups
Definition at line 430 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_softhangup(), and AST_SOFTHANGUP_SHUTDOWN.
Referenced by quit_handler().
00431 { 00432 struct ast_channel *c; 00433 shutting_down = 1; 00434 if (hangup) { 00435 AST_LIST_LOCK(&channels); 00436 AST_LIST_TRAVERSE(&channels, c, chan_list) 00437 ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN); 00438 AST_LIST_UNLOCK(&channels); 00439 } 00440 }
int ast_best_codec | ( | int | fmts | ) |
Pick the best audio codec.
Pick the best codec
Okay, ulaw is used by all telephony equipment, so start with it
Unless of course, you're a silly European, so then prefer ALAW
G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority
Okay, well, signed linear is easy to translate into other stuff
G.726 is standard ADPCM, in RFC3551 packing order
G.726 is standard ADPCM, in AAL2 packing order
ADPCM has great sound quality and is still pretty easy to translate
Okay, we're down to vocoders now, so pick GSM because it's small and easier to translate and sounds pretty good
iLBC is not too bad
Speex is free, but computationally more expensive than GSM
Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough to use it
G.729a is faster than 723 and slightly less expensive
Down to G.723.1 which is proprietary but at least designed for voice
Definition at line 655 of file channel.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_AUDIO_MASK, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_log(), LOG_WARNING, and prefs.
Referenced by __login_exec(), __oh323_new(), agent_call(), ast_codec_choose(), ast_iax2_new(), 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().
00656 { 00657 /* This just our opinion, expressed in code. We are asked to choose 00658 the best codec to use, given no information */ 00659 int x; 00660 static int prefs[] = 00661 { 00662 /*! Okay, ulaw is used by all telephony equipment, so start with it */ 00663 AST_FORMAT_ULAW, 00664 /*! Unless of course, you're a silly European, so then prefer ALAW */ 00665 AST_FORMAT_ALAW, 00666 /*! G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority */ 00667 AST_FORMAT_G722, 00668 /*! Okay, well, signed linear is easy to translate into other stuff */ 00669 AST_FORMAT_SLINEAR, 00670 /*! G.726 is standard ADPCM, in RFC3551 packing order */ 00671 AST_FORMAT_G726, 00672 /*! G.726 is standard ADPCM, in AAL2 packing order */ 00673 AST_FORMAT_G726_AAL2, 00674 /*! ADPCM has great sound quality and is still pretty easy to translate */ 00675 AST_FORMAT_ADPCM, 00676 /*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to 00677 translate and sounds pretty good */ 00678 AST_FORMAT_GSM, 00679 /*! iLBC is not too bad */ 00680 AST_FORMAT_ILBC, 00681 /*! Speex is free, but computationally more expensive than GSM */ 00682 AST_FORMAT_SPEEX, 00683 /*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough 00684 to use it */ 00685 AST_FORMAT_LPC10, 00686 /*! G.729a is faster than 723 and slightly less expensive */ 00687 AST_FORMAT_G729A, 00688 /*! Down to G.723.1 which is proprietary but at least designed for voice */ 00689 AST_FORMAT_G723_1, 00690 }; 00691 00692 /* Strip out video */ 00693 fmts &= AST_FORMAT_AUDIO_MASK; 00694 00695 /* Find the first preferred codec in the format given */ 00696 for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++) 00697 if (fmts & prefs[x]) 00698 return prefs[x]; 00699 ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts); 00700 return 0; 00701 }
struct ast_channel* ast_bridged_channel | ( | struct ast_channel * | chan | ) |
Find bridged channel.
chan | Current channel |
Definition at line 4511 of file channel.c.
References ast_channel::_bridge, ast_channel_tech::bridged_channel, and ast_channel::tech.
Referenced by __ast_read(), __dahdi_exception(), action_agents(), agents_show(), agents_show_online(), ast_bridge_call(), ast_channel_masquerade(), ast_do_masquerade(), attempt_transfer(), cb_events(), check_bridge(), common_exec(), console_transfer(), console_transfer_deprecated(), create_jb(), dahdi_handle_event(), dahdi_hangup(), export_aoc_vars(), handle_chanlist(), handle_chanlist_deprecated(), handle_hd_hf(), handle_invite_replaces(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response_invite(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_hangup(), mgcp_ss(), misdn_attempt_transfer(), mixmonitor_thread(), park_call_full(), schedule_delivery(), sip_read(), sip_set_rtp_peer(), socket_process(), ss_thread(), start_spying(), and startmon().
04512 { 04513 struct ast_channel *bridged; 04514 bridged = chan->_bridge; 04515 if (bridged && bridged->tech->bridged_channel) 04516 bridged = bridged->tech->bridged_channel(chan, bridged); 04517 return bridged; 04518 }
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 3782 of file channel.c.
References AST_CDR_FLAG_DIALED, ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, ast_set_flag, ast_test_flag, ast_channel_tech::call, ast_channel::cdr, and ast_channel::tech.
Referenced by __ast_request_and_dial(), agent_call(), ast_call_forward(), attempt_reconnect(), begin_dial(), connect_link(), do_idle_thread(), feature_request_and_dial(), features_call(), findmeexec(), ring_entry(), rpt(), and wait_for_answer().
03783 { 03784 /* Place an outgoing call, but don't wait any longer than timeout ms before returning. 03785 If the remote end does not answer within the timeout, then do NOT hang up, but 03786 return anyway. */ 03787 int res = -1; 03788 /* Stop if we're a zombie or need a soft hangup */ 03789 ast_channel_lock(chan); 03790 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03791 if (chan->cdr) { 03792 ast_set_flag(chan->cdr, AST_CDR_FLAG_DIALED); 03793 } 03794 if (chan->tech->call) 03795 res = chan->tech->call(chan, addr, timeout); 03796 ast_set_flag(chan, AST_FLAG_OUTGOING); 03797 } 03798 ast_channel_unlock(chan); 03799 return res; 03800 }
struct ast_channel* ast_call_forward | ( | struct ast_channel * | caller, | |
struct ast_channel * | orig, | |||
int * | timeout, | |||
int | format, | |||
struct outgoing_helper * | oh, | |||
int * | outstate | |||
) |
Forwards a call to a new channel specified by the original channel's call_forward str. If possible, the new forwarded channel is created and returned while the original one is terminated.
caller | in channel that requested orig | |
orig | channel being replaced by the call forward channel | |
timeout | maximum amount of time to wait for setup of new forward channel | |
format | requested channel format | |
oh | outgoing helper used with original channel | |
outstate | reason why unsuccessful (if uncuccessful) |
Definition at line 3515 of file channel.c.
References outgoing_helper::account, accountcode, ast_channel::accountcode, ast_call(), ast_cdr_setaccount(), ast_channel_datastore_inherit(), ast_channel_inherit_variables(), ast_channel_lock, ast_channel_unlock, ast_copy_string(), ast_hangup(), ast_log(), ast_request(), ast_set_callerid(), ast_set_variables(), ast_string_field_set, ast_strlen_zero(), ast_channel::call_forward, ast_channel::cid, outgoing_helper::cid_name, ast_callerid::cid_name, outgoing_helper::cid_num, ast_callerid::cid_num, ast_channel::context, ast_channel::data, handle_cause(), LOG_NOTICE, outgoing_helper::parent_channel, pbx_builtin_getvar_helper(), S_OR, type, and outgoing_helper::vars.
Referenced by __ast_request_and_dial(), and feature_request_and_dial().
03516 { 03517 char tmpchan[256]; 03518 struct ast_channel *new = NULL; 03519 char *data, *type; 03520 int cause = 0; 03521 int res; 03522 03523 /* gather data and request the new forward channel */ 03524 ast_copy_string(tmpchan, orig->call_forward, sizeof(tmpchan)); 03525 if ((data = strchr(tmpchan, '/'))) { 03526 *data++ = '\0'; 03527 type = tmpchan; 03528 } else { 03529 const char *forward_context; 03530 ast_channel_lock(orig); 03531 forward_context = pbx_builtin_getvar_helper(orig, "FORWARD_CONTEXT"); 03532 snprintf(tmpchan, sizeof(tmpchan), "%s@%s", orig->call_forward, S_OR(forward_context, orig->context)); 03533 ast_channel_unlock(orig); 03534 data = tmpchan; 03535 type = "Local"; 03536 } 03537 if (!(new = ast_request(type, format, data, &cause))) { 03538 ast_log(LOG_NOTICE, "Unable to create channel for call forward to '%s/%s' (cause = %d)\n", type, data, cause); 03539 handle_cause(cause, outstate); 03540 ast_hangup(orig); 03541 return NULL; 03542 } 03543 03544 /* Copy/inherit important information into new channel */ 03545 if (oh) { 03546 if (oh->vars) { 03547 ast_set_variables(new, oh->vars); 03548 } 03549 if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name)) { 03550 ast_set_callerid(new, oh->cid_num, oh->cid_name, oh->cid_num); 03551 } 03552 if (oh->parent_channel) { 03553 ast_channel_inherit_variables(oh->parent_channel, new); 03554 ast_channel_datastore_inherit(oh->parent_channel, new); 03555 } 03556 if (oh->account) { 03557 ast_cdr_setaccount(new, oh->account); 03558 } 03559 } else if (caller) { /* no outgoing helper so use caller if avaliable */ 03560 ast_channel_inherit_variables(caller, new); 03561 ast_channel_datastore_inherit(caller, new); 03562 } 03563 03564 ast_channel_lock(orig); 03565 ast_string_field_set(new, accountcode, orig->accountcode); 03566 if (!ast_strlen_zero(orig->cid.cid_num) && !ast_strlen_zero(new->cid.cid_name)) { 03567 ast_set_callerid(new, orig->cid.cid_num, orig->cid.cid_name, orig->cid.cid_num); 03568 } 03569 ast_channel_unlock(orig); 03570 03571 /* call new channel */ 03572 res = ast_call(new, data, 0); 03573 if (timeout) { 03574 *timeout = res; 03575 } 03576 if (res) { 03577 ast_log(LOG_NOTICE, "Unable to call forward to channel %s/%s\n", type, (char *)data); 03578 ast_hangup(orig); 03579 ast_hangup(new); 03580 return NULL; 03581 } 03582 ast_hangup(orig); 03583 03584 return new; 03585 }
void ast_cancel_shutdown | ( | void | ) |
Cancel a shutdown in progress.
Cancels an existing shutdown and returns to normal operation
Definition at line 455 of file channel.c.
Referenced by handle_abort_halt().
00456 { 00457 shutting_down = 0; 00458 }
const char* ast_cause2str | ( | int | state | ) |
Gives the string form of a given hangup cause.
state | cause to get the description of Give a name to a cause code Returns the text form of the binary cause code given |
Definition at line 575 of file channel.c.
Referenced by __transmit_response(), ast_do_masquerade(), ast_hangup(), findmeexec(), pbx_retrieve_variable(), sip_hangup(), and transmit_request_with_auth().
00576 { 00577 int x; 00578 00579 for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) { 00580 if (causes[x].cause == cause) 00581 return causes[x].desc; 00582 } 00583 00584 return "Unknown"; 00585 }
void ast_change_name | ( | struct ast_channel * | chan, | |
char * | newname | |||
) |
Change channel name.
Definition at line 4057 of file channel.c.
References ast_string_field_set, manager_event(), ast_channel::name, name, and ast_channel::uniqueid.
04058 { 04059 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid); 04060 ast_string_field_set(chan, name, newname); 04061 }
struct ast_channel* ast_channel_alloc | ( | int | needqueue, | |
int | state, | |||
const char * | cid_num, | |||
const char * | cid_name, | |||
const char * | acctcode, | |||
const char * | exten, | |||
const char * | context, | |||
const int | amaflag, | |||
const char * | name_fmt, | |||
... | ||||
) |
Create a channel structure.
Definition at line 709 of file channel.c.
References ast_calloc, ast_log(), AST_MAX_FDS, ast_string_field_init, DAHDI_FILE_TIMER, ast_channel::flags, free, HAVE_DAHDI, LOG_WARNING, sched_context_create(), sched_context_destroy(), and chanlist::tech.
Referenced by __oh323_new(), acf_odbc_read(), acf_odbc_write(), action_getvar(), agent_new(), alsa_new(), ast_async_goto(), ast_iax2_new(), ast_pbx_outgoing_cdr_failed(), ast_pbx_outgoing_exten(), builtin_atxfer(), check_goto_on_transfer(), dahdi_new(), features_new(), gtalk_new(), iax_park(), local_new(), make_email_file(), masq_park_call(), mgcp_new(), misdn_new(), nbs_new(), oss_new(), pbx_substitute_variables_helper_full(), phone_new(), sendpage(), sip_new(), sip_park(), and skinny_new().
00710 { 00711 struct ast_channel *tmp; 00712 int x; 00713 int flags; 00714 struct varshead *headp; 00715 va_list ap1, ap2; 00716 char *tech = "", *tech2 = NULL; 00717 00718 /* If shutting down, don't allocate any new channels */ 00719 if (shutting_down) { 00720 ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n"); 00721 return NULL; 00722 } 00723 00724 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) 00725 return NULL; 00726 00727 if (!(tmp->sched = sched_context_create())) { 00728 ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n"); 00729 free(tmp); 00730 return NULL; 00731 } 00732 00733 if ((ast_string_field_init(tmp, 128))) { 00734 sched_context_destroy(tmp->sched); 00735 free(tmp); 00736 return NULL; 00737 } 00738 00739 /* Don't bother initializing the last two FD here, because they 00740 will *always* be set just a few lines down (AST_TIMING_FD, 00741 AST_ALERT_FD). */ 00742 for (x = 0; x < AST_MAX_FDS - 2; x++) 00743 tmp->fds[x] = -1; 00744 00745 #ifdef HAVE_DAHDI 00746 00747 tmp->timingfd = open(DAHDI_FILE_TIMER, O_RDWR); 00748 00749 if (tmp->timingfd > -1) { 00750 /* Check if timing interface supports new 00751 ping/pong scheme */ 00752 flags = 1; 00753 if (!ioctl(tmp->timingfd, DAHDI_TIMERPONG, &flags)) 00754 needqueue = 0; 00755 } 00756 #else 00757 tmp->timingfd = -1; 00758 #endif 00759 00760 if (needqueue) { 00761 if (pipe(tmp->alertpipe)) { 00762 ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe! Try increasing max file descriptors with ulimit -n\n"); 00763 alertpipe_failed: 00764 #ifdef HAVE_DAHDI 00765 if (tmp->timingfd > -1) 00766 close(tmp->timingfd); 00767 #endif 00768 sched_context_destroy(tmp->sched); 00769 ast_string_field_free_memory(tmp); 00770 free(tmp); 00771 return NULL; 00772 } else { 00773 flags = fcntl(tmp->alertpipe[0], F_GETFL); 00774 if (fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK) < 0) { 00775 ast_log(LOG_WARNING, "Channel allocation failed: Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 00776 close(tmp->alertpipe[0]); 00777 close(tmp->alertpipe[1]); 00778 goto alertpipe_failed; 00779 } 00780 flags = fcntl(tmp->alertpipe[1], F_GETFL); 00781 if (fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK) < 0) { 00782 ast_log(LOG_WARNING, "Channel allocation failed: Unable to set alertpipe nonblocking! (%d: %s)\n", errno, strerror(errno)); 00783 close(tmp->alertpipe[0]); 00784 close(tmp->alertpipe[1]); 00785 goto alertpipe_failed; 00786 } 00787 } 00788 } else /* Make sure we've got it done right if they don't */ 00789 tmp->alertpipe[0] = tmp->alertpipe[1] = -1; 00790 00791 /* Always watch the alertpipe */ 00792 tmp->fds[AST_ALERT_FD] = tmp->alertpipe[0]; 00793 /* And timing pipe */ 00794 tmp->fds[AST_TIMING_FD] = tmp->timingfd; 00795 ast_string_field_set(tmp, name, "**Unknown**"); 00796 00797 /* Initial state */ 00798 tmp->_state = state; 00799 00800 tmp->streamid = -1; 00801 00802 tmp->fin = global_fin; 00803 tmp->fout = global_fout; 00804 00805 if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) { 00806 ast_string_field_build(tmp, uniqueid, "%li.%d", (long) time(NULL), 00807 ast_atomic_fetchadd_int(&uniqueint, 1)); 00808 } else { 00809 ast_string_field_build(tmp, uniqueid, "%s-%li.%d", ast_config_AST_SYSTEM_NAME, 00810 (long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1)); 00811 } 00812 00813 tmp->cid.cid_name = ast_strdup(cid_name); 00814 tmp->cid.cid_num = ast_strdup(cid_num); 00815 00816 if (!ast_strlen_zero(name_fmt)) { 00817 char *slash, *slash2; 00818 /* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call. 00819 * And they all use slightly different formats for their name string. 00820 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here. 00821 * This means, that the stringfields must have a routine that takes the va_lists directly, and 00822 * uses them to build the string, instead of forming the va_lists internally from the vararg ... list. 00823 * This new function was written so this can be accomplished. 00824 */ 00825 va_start(ap1, name_fmt); 00826 va_start(ap2, name_fmt); 00827 ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2); 00828 va_end(ap1); 00829 va_end(ap2); 00830 tech = ast_strdupa(tmp->name); 00831 if ((slash = strchr(tech, '/'))) { 00832 if ((slash2 = strchr(slash + 1, '/'))) { 00833 tech2 = slash + 1; 00834 *slash2 = '\0'; 00835 } 00836 *slash = '\0'; 00837 } 00838 } 00839 00840 /* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */ 00841 00842 /* These 4 variables need to be set up for the cdr_init() to work right */ 00843 if (amaflag) 00844 tmp->amaflags = amaflag; 00845 else 00846 tmp->amaflags = ast_default_amaflags; 00847 00848 if (!ast_strlen_zero(acctcode)) 00849 ast_string_field_set(tmp, accountcode, acctcode); 00850 else 00851 ast_string_field_set(tmp, accountcode, ast_default_accountcode); 00852 00853 if (!ast_strlen_zero(context)) 00854 ast_copy_string(tmp->context, context, sizeof(tmp->context)); 00855 else 00856 strcpy(tmp->context, "default"); 00857 00858 if (!ast_strlen_zero(exten)) 00859 ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); 00860 else 00861 strcpy(tmp->exten, "s"); 00862 00863 tmp->priority = 1; 00864 00865 tmp->cdr = ast_cdr_alloc(); 00866 ast_cdr_init(tmp->cdr, tmp); 00867 ast_cdr_start(tmp->cdr); 00868 00869 headp = &tmp->varshead; 00870 AST_LIST_HEAD_INIT_NOLOCK(headp); 00871 00872 ast_mutex_init(&tmp->lock); 00873 00874 AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores); 00875 00876 ast_string_field_set(tmp, language, defaultlanguage); 00877 00878 tmp->tech = &null_tech; 00879 00880 ast_set_flag(tmp, AST_FLAG_IN_CHANNEL_LIST); 00881 00882 AST_LIST_LOCK(&channels); 00883 AST_LIST_INSERT_HEAD(&channels, tmp, chan_list); 00884 AST_LIST_UNLOCK(&channels); 00885 00886 /*\!note 00887 * and now, since the channel structure is built, and has its name, let's 00888 * call the manager event generator with this Newchannel event. This is the 00889 * proper and correct place to make this call, but you sure do have to pass 00890 * a lot of data into this func to do it here! 00891 */ 00892 if (ast_get_channel_tech(tech) || (tech2 && ast_get_channel_tech(tech2))) { 00893 manager_event(EVENT_FLAG_CALL, "Newchannel", 00894 "Channel: %s\r\n" 00895 "State: %s\r\n" 00896 "CallerIDNum: %s\r\n" 00897 "CallerIDName: %s\r\n" 00898 "Uniqueid: %s\r\n", 00899 tmp->name, ast_state2str(state), 00900 S_OR(cid_num, "<unknown>"), 00901 S_OR(cid_name, "<unknown>"), 00902 tmp->uniqueid); 00903 } 00904 00905 return tmp; 00906 }
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 4756 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_clear_softhangup(), ast_channel_make_compatible(), ast_check_hangup(), ast_check_hangup_locked(), ast_clear_flag, AST_CONTROL_SRCUPDATE, AST_FEATURE_PLAY_WARNING, AST_FEATURE_REDIRECT, AST_FEATURE_WARNING_ACTIVE, AST_FLAG_END_DTMF_ONLY, AST_FLAG_NBRIDGE, AST_FLAG_ZOMBIE, ast_generic_bridge(), ast_indicate(), ast_log(), ast_samp2tv(), ast_set_flag, AST_SOFTHANGUP_UNBRIDGE, ast_test_flag, ast_tvadd(), ast_tvdiff_ms(), ast_tvnow(), ast_tvsub(), ast_tvzero(), ast_verbose(), ast_channel::audiohooks, ast_channel_tech::bridge, bridge_playfile(), ast_channel::cid, ast_callerid::cid_num, config, ast_channel::generator, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::monitor, ast_channel::name, ast_channel::nativeformats, option_debug, option_verbose, ast_channel::readformat, ast_channel_tech::send_digit_begin, t, ast_channel::tech, ast_channel::uniqueid, update_bridgepeer(), VERBOSE_PREFIX_3, and ast_channel::writeformat.
Referenced by ast_bridge_call().
04758 { 04759 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04760 int nativefailed=0; 04761 int firstpass; 04762 int o0nativeformats; 04763 int o1nativeformats; 04764 long time_left_ms=0; 04765 char caller_warning = 0; 04766 char callee_warning = 0; 04767 04768 if (c0->_bridge) { 04769 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04770 c0->name, c0->_bridge->name); 04771 return -1; 04772 } 04773 if (c1->_bridge) { 04774 ast_log(LOG_WARNING, "%s is already in a bridge with %s\n", 04775 c1->name, c1->_bridge->name); 04776 return -1; 04777 } 04778 04779 /* Stop if we're a zombie or need a soft hangup */ 04780 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04781 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) 04782 return -1; 04783 04784 *fo = NULL; 04785 firstpass = config->firstpass; 04786 config->firstpass = 0; 04787 04788 if (ast_tvzero(config->start_time)) 04789 config->start_time = ast_tvnow(); 04790 time_left_ms = config->timelimit; 04791 04792 caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING); 04793 callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING); 04794 04795 if (config->start_sound && firstpass) { 04796 if (caller_warning) 04797 bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000); 04798 if (callee_warning) 04799 bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000); 04800 } 04801 04802 /* Keep track of bridge */ 04803 c0->_bridge = c1; 04804 c1->_bridge = c0; 04805 04806 /* \todo XXX here should check that cid_num is not NULL */ 04807 manager_event(EVENT_FLAG_CALL, "Link", 04808 "Channel1: %s\r\n" 04809 "Channel2: %s\r\n" 04810 "Uniqueid1: %s\r\n" 04811 "Uniqueid2: %s\r\n" 04812 "CallerID1: %s\r\n" 04813 "CallerID2: %s\r\n", 04814 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04815 04816 o0nativeformats = c0->nativeformats; 04817 o1nativeformats = c1->nativeformats; 04818 04819 if (config->feature_timer && !ast_tvzero(config->nexteventts)) { 04820 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000)); 04821 } else if (config->timelimit && firstpass) { 04822 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04823 if (caller_warning || callee_warning) 04824 config->nexteventts = ast_tvsub(config->nexteventts, ast_samp2tv(config->play_warning, 1000)); 04825 } 04826 04827 if (!c0->tech->send_digit_begin) 04828 ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY); 04829 if (!c1->tech->send_digit_begin) 04830 ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY); 04831 04832 /* Before we enter in and bridge these two together tell them both the source of audio has changed */ 04833 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 04834 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 04835 04836 for (/* ever */;;) { 04837 struct timeval now = { 0, }; 04838 int to; 04839 04840 to = -1; 04841 04842 if (!ast_tvzero(config->nexteventts)) { 04843 now = ast_tvnow(); 04844 to = ast_tvdiff_ms(config->nexteventts, now); 04845 if (to <= 0) { 04846 if (!config->timelimit) { 04847 res = AST_BRIDGE_COMPLETE; 04848 break; 04849 } 04850 to = 0; 04851 } 04852 } 04853 04854 if (config->timelimit) { 04855 time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time); 04856 if (time_left_ms < to) 04857 to = time_left_ms; 04858 04859 if (time_left_ms <= 0) { 04860 if (caller_warning && config->end_sound) 04861 bridge_playfile(c0, c1, config->end_sound, 0); 04862 if (callee_warning && config->end_sound) 04863 bridge_playfile(c1, c0, config->end_sound, 0); 04864 *fo = NULL; 04865 res = 0; 04866 break; 04867 } 04868 04869 if (!to) { 04870 if (time_left_ms >= 5000 && config->warning_sound && config->play_warning && ast_test_flag(config, AST_FEATURE_WARNING_ACTIVE)) { 04871 int t = (time_left_ms + 500) / 1000; /* round to nearest second */ 04872 if (caller_warning) 04873 bridge_playfile(c0, c1, config->warning_sound, t); 04874 if (callee_warning) 04875 bridge_playfile(c1, c0, config->warning_sound, t); 04876 } 04877 if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000))) 04878 config->nexteventts = ast_tvadd(config->nexteventts, ast_samp2tv(config->warning_freq, 1000)); 04879 else 04880 config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000)); 04881 } 04882 ast_clear_flag(config, AST_FEATURE_WARNING_ACTIVE); 04883 } 04884 04885 if ((c0->_softhangup | c1->_softhangup) & AST_SOFTHANGUP_UNBRIDGE) {/* Bit operators are intentional. */ 04886 if (c0->_softhangup & AST_SOFTHANGUP_UNBRIDGE) { 04887 ast_channel_clear_softhangup(c0, AST_SOFTHANGUP_UNBRIDGE); 04888 } 04889 if (c1->_softhangup & AST_SOFTHANGUP_UNBRIDGE) { 04890 ast_channel_clear_softhangup(c1, AST_SOFTHANGUP_UNBRIDGE); 04891 } 04892 c0->_bridge = c1; 04893 c1->_bridge = c0; 04894 if (option_debug) 04895 ast_log(LOG_DEBUG, "Unbridge signal received. Ending native bridge.\n"); 04896 continue; 04897 } 04898 04899 /* Stop if we're a zombie or need a soft hangup */ 04900 if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) || 04901 ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) { 04902 *fo = NULL; 04903 res = 0; 04904 if (option_debug) 04905 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", 04906 c0->name, c1->name, 04907 ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04908 ast_check_hangup(c0) ? "Yes" : "No", 04909 ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No", 04910 ast_check_hangup(c1) ? "Yes" : "No"); 04911 break; 04912 } 04913 04914 update_bridgepeer(c0, c1); 04915 04916 if (c0->tech->bridge && 04917 (config->timelimit == 0) && 04918 (c0->tech->bridge == c1->tech->bridge) && 04919 !nativefailed && !c0->monitor && !c1->monitor && 04920 !c0->audiohooks && !c1->audiohooks && !ast_test_flag(&(config->features_callee),AST_FEATURE_REDIRECT) && 04921 !ast_test_flag(&(config->features_caller),AST_FEATURE_REDIRECT) && 04922 !c0->masq && !c0->masqr && !c1->masq && !c1->masqr) { 04923 /* Looks like they share a bridge method and nothing else is in the way */ 04924 ast_set_flag(c0, AST_FLAG_NBRIDGE); 04925 ast_set_flag(c1, AST_FLAG_NBRIDGE); 04926 if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) { 04927 /* \todo XXX here should check that cid_num is not NULL */ 04928 manager_event(EVENT_FLAG_CALL, "Unlink", 04929 "Channel1: %s\r\n" 04930 "Channel2: %s\r\n" 04931 "Uniqueid1: %s\r\n" 04932 "Uniqueid2: %s\r\n" 04933 "CallerID1: %s\r\n" 04934 "CallerID2: %s\r\n", 04935 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04936 if (option_debug) 04937 ast_log(LOG_DEBUG, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name); 04938 04939 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04940 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04941 04942 if ((c0->_softhangup | c1->_softhangup) & AST_SOFTHANGUP_UNBRIDGE) {/* Bit operators are intentional. */ 04943 continue; 04944 } 04945 04946 c0->_bridge = NULL; 04947 c1->_bridge = NULL; 04948 04949 return res; 04950 } else { 04951 ast_clear_flag(c0, AST_FLAG_NBRIDGE); 04952 ast_clear_flag(c1, AST_FLAG_NBRIDGE); 04953 } 04954 switch (res) { 04955 case AST_BRIDGE_RETRY: 04956 if (config->play_warning) { 04957 ast_set_flag(config, AST_FEATURE_WARNING_ACTIVE); 04958 } 04959 continue; 04960 default: 04961 if (option_verbose > 2) 04962 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s ended\n", 04963 c0->name, c1->name); 04964 /* fallthrough */ 04965 case AST_BRIDGE_FAILED_NOWARN: 04966 nativefailed++; 04967 break; 04968 } 04969 } 04970 04971 if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) || 04972 (c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) && 04973 !(c0->generator || c1->generator)) { 04974 if (ast_channel_make_compatible(c0, c1)) { 04975 ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name); 04976 /* \todo XXX here should check that cid_num is not NULL */ 04977 manager_event(EVENT_FLAG_CALL, "Unlink", 04978 "Channel1: %s\r\n" 04979 "Channel2: %s\r\n" 04980 "Uniqueid1: %s\r\n" 04981 "Uniqueid2: %s\r\n" 04982 "CallerID1: %s\r\n" 04983 "CallerID2: %s\r\n", 04984 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 04985 return AST_BRIDGE_FAILED; 04986 } 04987 o0nativeformats = c0->nativeformats; 04988 o1nativeformats = c1->nativeformats; 04989 } 04990 04991 update_bridgepeer(c0, c1); 04992 04993 res = ast_generic_bridge(c0, c1, config, fo, rc, config->nexteventts); 04994 if (res != AST_BRIDGE_RETRY) { 04995 break; 04996 } else if (config->feature_timer) { 04997 /* feature timer expired but has not been updated, sending to ast_bridge_call to do so */ 04998 break; 04999 } 05000 } 05001 05002 ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY); 05003 ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY); 05004 05005 /* Now that we have broken the bridge the source will change yet again */ 05006 ast_indicate(c0, AST_CONTROL_SRCUPDATE); 05007 ast_indicate(c1, AST_CONTROL_SRCUPDATE); 05008 05009 c0->_bridge = NULL; 05010 c1->_bridge = NULL; 05011 05012 /* \todo XXX here should check that cid_num is not NULL */ 05013 manager_event(EVENT_FLAG_CALL, "Unlink", 05014 "Channel1: %s\r\n" 05015 "Channel2: %s\r\n" 05016 "Uniqueid1: %s\r\n" 05017 "Uniqueid2: %s\r\n" 05018 "CallerID1: %s\r\n" 05019 "CallerID2: %s\r\n", 05020 c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num); 05021 if (option_debug) 05022 ast_log(LOG_DEBUG, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name); 05023 05024 return res; 05025 }
void ast_channel_clear_softhangup | ( | struct ast_channel * | chan, | |
int | flag | |||
) |
Clear a set of softhangup flags from a channel.
Never clear a softhangup flag from a channel directly. Instead, use this function. This ensures that all aspects of the softhangup process are aborted.
chan | the channel to clear the flag on | |
flag | the flag or flags to clear |
Definition at line 1573 of file channel.c.
References ast_channel::_softhangup, ast_channel_lock, ast_channel_unlock, AST_CONTROL_END_OF_Q, AST_FRAME_CONTROL, ast_frfree, AST_LIST_LAST, AST_LIST_REMOVE, ast_frame::frametype, ast_channel::readq, and ast_frame::subclass.
Referenced by __ast_pbx_run(), ast_channel_bridge(), check_goto_on_transfer(), and collect_digits().
01574 { 01575 ast_channel_lock(chan); 01576 01577 chan->_softhangup &= ~flag; 01578 01579 if (!chan->_softhangup) { 01580 struct ast_frame *fr; 01581 01582 /* If we have completely cleared the softhangup flag, 01583 * then we need to fully abort the hangup process. This requires 01584 * pulling the END_OF_Q frame out of the channel frame queue if it 01585 * still happens to be there. */ 01586 01587 fr = AST_LIST_LAST(&chan->readq); 01588 if (fr && fr->frametype == AST_FRAME_CONTROL && 01589 fr->subclass == AST_CONTROL_END_OF_Q) { 01590 AST_LIST_REMOVE(&chan->readq, fr, frame_list); 01591 ast_frfree(fr); 01592 } 01593 } 01594 01595 ast_channel_unlock(chan); 01596 }
int ast_channel_cmpwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Compare a offset with the settings of when to hang a channel up.
chan | channel on which to check for hang up | |
offset | offset in seconds from current time |
Definition at line 475 of file channel.c.
References ast_channel::whentohangup.
00476 { 00477 time_t whentohangup; 00478 00479 if (chan->whentohangup == 0) { 00480 return (offset == 0) ? 0 : -1; 00481 } else { 00482 if (offset == 0) /* XXX why is this special ? */ 00483 return (1); 00484 else { 00485 whentohangup = offset + time (NULL); 00486 if (chan->whentohangup < whentohangup) 00487 return (1); 00488 else if (chan->whentohangup == whentohangup) 00489 return (0); 00490 else 00491 return (-1); 00492 } 00493 } 00494 }
int ast_channel_datastore_add | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Add a datastore to a channel.
Definition at line 1521 of file channel.c.
References AST_LIST_INSERT_HEAD, ast_channel::datastores, and ast_datastore::entry.
Referenced by _macro_exec(), add_features_datastores(), apply_plc(), setup_chanspy_ds(), setup_inheritance_datastore(), setup_mixmonitor_ds(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01522 { 01523 int res = 0; 01524 01525 AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry); 01526 01527 return res; 01528 }
struct ast_datastore* ast_channel_datastore_alloc | ( | const struct ast_datastore_info * | info, | |
char * | uid | |||
) |
Create a channel datastore structure.
Definition at line 1457 of file channel.c.
References ast_calloc, ast_free, ast_strdup, ast_strlen_zero(), and ast_datastore::info.
Referenced by _macro_exec(), add_features_datastores(), apply_plc(), ast_channel_datastore_inherit(), setup_chanspy_ds(), setup_inheritance_datastore(), setup_mixmonitor_ds(), setup_transfer_datastore(), smdi_msg_retrieve_read(), speech_create(), and try_calling().
01458 { 01459 struct ast_datastore *datastore = NULL; 01460 01461 /* Make sure we at least have type so we can identify this */ 01462 if (info == NULL) { 01463 return NULL; 01464 } 01465 01466 /* Allocate memory for datastore and clear it */ 01467 datastore = ast_calloc(1, sizeof(*datastore)); 01468 if (datastore == NULL) { 01469 return NULL; 01470 } 01471 01472 datastore->info = info; 01473 01474 if (!ast_strlen_zero(uid) && !(datastore->uid = ast_strdup(uid))) { 01475 ast_free(datastore); 01476 datastore = NULL; 01477 } 01478 01479 return datastore; 01480 }
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 1548 of file channel.c.
References AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_channel::datastores, ast_datastore::entry, ast_datastore::info, and ast_datastore::uid.
Referenced by _macro_exec(), add_features_datastores(), apply_plc(), attended_transfer_occurred(), builtin_atxfer(), chanspy_ds_free(), clear_dialed_interfaces(), do_parking_thread(), find_speech(), func_inheritance_write(), park_exec(), queue_transfer_fixup(), smdi_msg_read(), speech_background(), speech_destroy(), stop_mixmonitor_exec(), and try_calling().
01549 { 01550 struct ast_datastore *datastore = NULL; 01551 01552 if (info == NULL) 01553 return NULL; 01554 01555 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) { 01556 if (datastore->info == info) { 01557 if (uid != NULL && datastore->uid != NULL) { 01558 if (!strcasecmp(uid, datastore->uid)) { 01559 /* Matched by type AND uid */ 01560 break; 01561 } 01562 } else { 01563 /* Matched by type at least */ 01564 break; 01565 } 01566 } 01567 } 01568 AST_LIST_TRAVERSE_SAFE_END 01569 01570 return datastore; 01571 }
int ast_channel_datastore_free | ( | struct ast_datastore * | datastore | ) |
Free a channel datastore structure.
Definition at line 1482 of file channel.c.
References ast_datastore::data, ast_datastore_info::destroy, free, ast_datastore::info, and ast_datastore::uid.
Referenced by add_features_datastores(), adjust_frame_for_plc(), apply_plc(), ast_channel_free(), chanspy_ds_free(), clear_dialed_interfaces(), setup_inheritance_datastore(), stop_mixmonitor_exec(), and try_calling().
01483 { 01484 int res = 0; 01485 01486 /* Using the destroy function (if present) destroy the data */ 01487 if (datastore->info->destroy != NULL && datastore->data != NULL) { 01488 datastore->info->destroy(datastore->data); 01489 datastore->data = NULL; 01490 } 01491 01492 /* Free allocated UID memory */ 01493 if (datastore->uid != NULL) { 01494 free(datastore->uid); 01495 datastore->uid = NULL; 01496 } 01497 01498 /* Finally free memory used by ourselves */ 01499 free(datastore); 01500 01501 return res; 01502 }
int ast_channel_datastore_inherit | ( | struct ast_channel * | from, | |
struct ast_channel * | to | |||
) |
Inherit datastores from a parent to a child.
Definition at line 1504 of file channel.c.
References ast_channel_datastore_alloc(), AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_datastore::data, DATASTORE_INHERIT_FOREVER, ast_channel::datastores, ast_datastore_info::duplicate, ast_datastore::entry, ast_datastore::info, ast_datastore::inheritance, and ast_datastore::uid.
Referenced by ast_call_forward(), findmeexec(), local_call(), ring_entry(), and wait_for_answer().
01505 { 01506 struct ast_datastore *datastore = NULL, *datastore2; 01507 01508 AST_LIST_TRAVERSE(&from->datastores, datastore, entry) { 01509 if (datastore->inheritance > 0) { 01510 datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid); 01511 if (datastore2) { 01512 datastore2->data = datastore->info->duplicate ? datastore->info->duplicate(datastore->data) : NULL; 01513 datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1; 01514 AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry); 01515 } 01516 } 01517 } 01518 return 0; 01519 }
int ast_channel_datastore_remove | ( | struct ast_channel * | chan, | |
struct ast_datastore * | datastore | |||
) |
Remove a datastore from a channel.
Definition at line 1530 of file channel.c.
References AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_channel::datastores, and ast_datastore::entry.
Referenced by adjust_frame_for_plc(), chanspy_ds_free(), clear_dialed_interfaces(), queue_transfer_fixup(), speech_background(), speech_destroy(), stop_mixmonitor_exec(), and try_calling().
01531 { 01532 struct ast_datastore *datastore2 = NULL; 01533 int res = -1; 01534 01535 /* Find our position and remove ourselves */ 01536 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore2, entry) { 01537 if (datastore2 == datastore) { 01538 AST_LIST_REMOVE_CURRENT(&chan->datastores, entry); 01539 res = 0; 01540 break; 01541 } 01542 } 01543 AST_LIST_TRAVERSE_SAFE_END 01544 01545 return res; 01546 }
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 1076 of file channel.c.
References AST_FLAG_DEFER_DTMF, ast_set_flag, and ast_test_flag.
Referenced by __adsi_transmit_messages(), and find_cache().
01077 { 01078 int pre = 0; 01079 01080 if (chan) { 01081 pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF); 01082 ast_set_flag(chan, AST_FLAG_DEFER_DTMF); 01083 } 01084 return pre; 01085 }
void ast_channel_free | ( | struct ast_channel * | chan | ) |
Free a channel structure.
Definition at line 1355 of file channel.c.
References ast_channel::alertpipe, ast_app_group_discard(), ast_cdr_discard(), ast_channel_datastore_free(), ast_channel_lock, AST_CHANNEL_NAME, ast_channel_unlock, ast_copy_string(), ast_device_state_changed_literal(), AST_FLAG_IN_CHANNEL_LIST, ast_frfree, ast_jb_destroy(), AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, ast_log(), ast_moh_cleanup(), ast_mutex_destroy(), ast_string_field_free_memory, ast_test_flag, ast_translator_free_path(), ast_var_delete(), ast_channel::cdr, ast_channel::cid, ast_channel::datastores, ast_datastore::entry, f, free, free_cid(), ast_channel::lock, LOG_DEBUG, ast_channel::monitor, ast_channel::music_state, name, ast_channel::name, option_debug, ast_channel::pbx, ast_channel::readq, ast_channel::readtrans, ast_channel::sched, sched_context_destroy(), ast_channel_monitor::stop, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel::varshead, and ast_channel::writetrans.
Referenced by acf_odbc_read(), acf_odbc_write(), action_getvar(), agent_cleanup(), ast_do_masquerade(), ast_hangup(), ast_iax2_new(), ast_pbx_outgoing_cdr_failed(), gtalk_newcall(), local_new(), make_email_file(), pbx_substitute_variables_helper_full(), and sendpage().
01356 { 01357 int fd; 01358 struct ast_var_t *vardata; 01359 struct ast_frame *f; 01360 struct varshead *headp; 01361 struct ast_datastore *datastore = NULL; 01362 char name[AST_CHANNEL_NAME], *dashptr; 01363 int inlist; 01364 01365 headp=&chan->varshead; 01366 01367 inlist = ast_test_flag(chan, AST_FLAG_IN_CHANNEL_LIST); 01368 if (inlist) { 01369 AST_LIST_LOCK(&channels); 01370 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01371 if (option_debug) 01372 ast_log(LOG_DEBUG, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01373 } 01374 /* Lock and unlock the channel just to be sure nobody has it locked still 01375 due to a reference retrieved from the channel list. */ 01376 ast_channel_lock(chan); 01377 ast_channel_unlock(chan); 01378 } 01379 01380 /* Get rid of each of the data stores on the channel */ 01381 ast_channel_lock(chan); 01382 while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry))) 01383 /* Free the data store */ 01384 ast_channel_datastore_free(datastore); 01385 ast_channel_unlock(chan); 01386 01387 /* Lock and unlock the channel just to be sure nobody has it locked still 01388 due to a reference that was stored in a datastore. (i.e. app_chanspy) */ 01389 ast_channel_lock(chan); 01390 ast_channel_unlock(chan); 01391 01392 if (chan->tech_pvt) { 01393 ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name); 01394 free(chan->tech_pvt); 01395 } 01396 01397 if (chan->sched) 01398 sched_context_destroy(chan->sched); 01399 01400 ast_copy_string(name, chan->name, sizeof(name)); 01401 if ((dashptr = strrchr(name, '-'))) { 01402 *dashptr = '\0'; 01403 } 01404 01405 /* Stop monitoring */ 01406 if (chan->monitor) 01407 chan->monitor->stop( chan, 0 ); 01408 01409 /* If there is native format music-on-hold state, free it */ 01410 if (chan->music_state) 01411 ast_moh_cleanup(chan); 01412 01413 /* Free translators */ 01414 if (chan->readtrans) 01415 ast_translator_free_path(chan->readtrans); 01416 if (chan->writetrans) 01417 ast_translator_free_path(chan->writetrans); 01418 if (chan->pbx) 01419 ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name); 01420 free_cid(&chan->cid); 01421 /* Close pipes if appropriate */ 01422 if ((fd = chan->alertpipe[0]) > -1) 01423 close(fd); 01424 if ((fd = chan->alertpipe[1]) > -1) 01425 close(fd); 01426 if ((fd = chan->timingfd) > -1) 01427 close(fd); 01428 while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list))) 01429 ast_frfree(f); 01430 01431 /* loop over the variables list, freeing all data and deleting list items */ 01432 /* no need to lock the list, as the channel is already locked */ 01433 01434 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries))) 01435 ast_var_delete(vardata); 01436 01437 ast_app_group_discard(chan); 01438 01439 /* Destroy the jitterbuffer */ 01440 ast_jb_destroy(chan); 01441 01442 if (chan->cdr) { 01443 ast_cdr_discard(chan->cdr); 01444 chan->cdr = NULL; 01445 } 01446 01447 ast_mutex_destroy(&chan->lock); 01448 01449 ast_string_field_free_memory(chan); 01450 free(chan); 01451 if (inlist) 01452 AST_LIST_UNLOCK(&channels); 01453 01454 ast_device_state_changed_literal(name); 01455 }
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 4063 of file channel.c.
References AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_log(), ast_var_assign(), ast_var_full_name(), ast_var_name(), ast_var_value(), ast_var_t::entries, LOG_DEBUG, option_debug, and ast_channel::varshead.
Referenced by __ast_request_and_dial(), agent_call(), ast_call_forward(), begin_dial(), feature_request_and_dial(), findmeexec(), ring_entry(), and wait_for_answer().
04064 { 04065 struct ast_var_t *current, *newvar; 04066 const char *varname; 04067 04068 AST_LIST_TRAVERSE(&parent->varshead, current, entries) { 04069 int vartype = 0; 04070 04071 varname = ast_var_full_name(current); 04072 if (!varname) 04073 continue; 04074 04075 if (varname[0] == '_') { 04076 vartype = 1; 04077 if (varname[1] == '_') 04078 vartype = 2; 04079 } 04080 04081 switch (vartype) { 04082 case 1: 04083 newvar = ast_var_assign(&varname[1], ast_var_value(current)); 04084 if (newvar) { 04085 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 04086 if (option_debug) 04087 ast_log(LOG_DEBUG, "Copying soft-transferable variable %s.\n", ast_var_name(newvar)); 04088 } 04089 break; 04090 case 2: 04091 newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current)); 04092 if (newvar) { 04093 AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries); 04094 if (option_debug) 04095 ast_log(LOG_DEBUG, "Copying hard-transferable variable %s.\n", ast_var_name(newvar)); 04096 } 04097 break; 04098 default: 04099 if (option_debug) 04100 ast_log(LOG_DEBUG, "Not copying variable %s.\n", ast_var_name(current)); 04101 break; 04102 } 04103 } 04104 }
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 3903 of file channel.c.
References AST_FORMAT_SLINEAR, ast_log(), ast_opt_generic_plc, ast_opt_transcode_via_slin, ast_set_read_format(), ast_set_write_format(), ast_translate_path_steps(), ast_translator_best_choice(), ast_channel::name, ast_channel::nativeformats, ast_channel::readformat, and ast_channel::writeformat.
Referenced by app_exec(), ast_channel_bridge(), check_compat(), park_exec(), and wait_for_answer().
03904 { 03905 int src; 03906 int dst; 03907 int use_slin; 03908 03909 if (chan->readformat == peer->writeformat && chan->writeformat == peer->readformat) { 03910 /* Already compatible! Moving on ... */ 03911 return 0; 03912 } 03913 03914 /* Set up translation from the chan to the peer */ 03915 src = chan->nativeformats; 03916 dst = peer->nativeformats; 03917 if (ast_translator_best_choice(&dst, &src) < 0) { 03918 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", chan->name, src, peer->name, dst); 03919 return -1; 03920 } 03921 03922 /* if the best path is not 'pass through', then 03923 transcoding is needed; if desired, force transcode path 03924 to use SLINEAR between channels, but only if there is 03925 no direct conversion available */ 03926 if ((src != dst) && ast_opt_transcode_via_slin && 03927 (ast_translate_path_steps(dst, src) != 1)) 03928 dst = AST_FORMAT_SLINEAR; 03929 if (ast_set_read_format(chan, dst) < 0) { 03930 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", chan->name, dst); 03931 return -1; 03932 } 03933 if (ast_set_write_format(peer, dst) < 0) { 03934 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", peer->name, dst); 03935 return -1; 03936 } 03937 03938 /* Set up translation from the peer to the chan */ 03939 src = peer->nativeformats; 03940 dst = chan->nativeformats; 03941 if (ast_translator_best_choice(&dst, &src) < 0) { 03942 ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", peer->name, src, chan->name, dst); 03943 return -1; 03944 } 03945 03946 /* if the best path is not 'pass through', then 03947 * transcoding is needed; if desired, force transcode path 03948 * to use SLINEAR between channels, but only if there is 03949 * no direct conversion available. If generic PLC is 03950 * desired, then transcoding via SLINEAR is a requirement 03951 */ 03952 use_slin = (src == AST_FORMAT_SLINEAR || dst == AST_FORMAT_SLINEAR); 03953 if ((src != dst) && (ast_opt_generic_plc || ast_opt_transcode_via_slin) && 03954 (ast_translate_path_steps(dst, src) != 1 || use_slin)) 03955 dst = AST_FORMAT_SLINEAR; 03956 if (ast_set_read_format(peer, dst) < 0) { 03957 ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", peer->name, dst); 03958 return -1; 03959 } 03960 if (ast_set_write_format(chan, dst) < 0) { 03961 ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", chan->name, dst); 03962 return -1; 03963 } 03964 return 0; 03965 }
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 3967 of file channel.c.
References ast_channel::_bridge, ast_bridged_channel(), ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_log(), ast_null_frame, ast_queue_frame(), ast_channel_tech::get_base_channel, LOG_DEBUG, ast_channel::masq, ast_channel::masqr, ast_channel::name, option_debug, and ast_channel::tech.
Referenced by ast_async_goto(), attempt_transfer(), builtin_atxfer(), check_availability(), check_bridge(), check_goto_on_transfer(), handle_invite_replaces(), iax_park(), masq_park_call(), misdn_attempt_transfer(), pickup_do(), and sip_park().
03968 { 03969 int res = -1; 03970 struct ast_channel *final_orig, *final_clone, *base; 03971 03972 retrymasq: 03973 final_orig = original; 03974 final_clone = clone; 03975 03976 ast_channel_lock(original); 03977 while (ast_channel_trylock(clone)) { 03978 ast_channel_unlock(original); 03979 usleep(1); 03980 ast_channel_lock(original); 03981 } 03982 03983 /* each of these channels may be sitting behind a channel proxy (i.e. chan_agent) 03984 and if so, we don't really want to masquerade it, but its proxy */ 03985 if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original)) 03986 final_orig = original->_bridge; 03987 03988 if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone)) 03989 final_clone = clone->_bridge; 03990 03991 if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) { 03992 final_clone = base; 03993 } 03994 03995 if ((final_orig != original) || (final_clone != clone)) { 03996 /* Lots and lots of deadlock avoidance. The main one we're competing with 03997 * is ast_write(), which locks channels recursively, when working with a 03998 * proxy channel. */ 03999 if (ast_channel_trylock(final_orig)) { 04000 ast_channel_unlock(clone); 04001 ast_channel_unlock(original); 04002 goto retrymasq; 04003 } 04004 if (ast_channel_trylock(final_clone)) { 04005 ast_channel_unlock(final_orig); 04006 ast_channel_unlock(clone); 04007 ast_channel_unlock(original); 04008 goto retrymasq; 04009 } 04010 ast_channel_unlock(clone); 04011 ast_channel_unlock(original); 04012 original = final_orig; 04013 clone = final_clone; 04014 } 04015 04016 if (original == clone) { 04017 ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name); 04018 ast_channel_unlock(clone); 04019 ast_channel_unlock(original); 04020 return -1; 04021 } 04022 04023 if (option_debug) 04024 ast_log(LOG_DEBUG, "Planning to masquerade channel %s into the structure of %s\n", 04025 clone->name, original->name); 04026 04027 if (!original->masqr && !original->masq && !clone->masq && !clone->masqr) { 04028 original->masq = clone; 04029 clone->masqr = original; 04030 ast_queue_frame(original, &ast_null_frame); 04031 ast_queue_frame(clone, &ast_null_frame); 04032 if (option_debug) 04033 ast_log(LOG_DEBUG, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name); 04034 res = 0; 04035 04036 } else if (original->masq) { 04037 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 04038 original->masq->name, original->name); 04039 } else if (original->masqr) { 04040 /* not yet as a previously planned masq hasn't yet happened */ 04041 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 04042 original->name, original->masqr->name); 04043 } else if (clone->masq) { 04044 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 04045 clone->masq->name, clone->name); 04046 } else { /* (clone->masqr) */ 04047 ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n", 04048 clone->name, clone->masqr->name); 04049 } 04050 04051 ast_channel_unlock(clone); 04052 ast_channel_unlock(original); 04053 04054 return res; 04055 }
char* ast_channel_reason2str | ( | int | reason | ) |
return an english explanation of the code returned thru __ast_request_and_dial's 'outstate' argument
reason | The integer argument, usually taken from AST_CONTROL_ macros |
Definition at line 3479 of file channel.c.
References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_RING, and AST_CONTROL_RINGING.
Referenced by attempt_thread().
03480 { 03481 switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */ 03482 { 03483 case 0: 03484 return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)"; 03485 case AST_CONTROL_HANGUP: 03486 return "Hangup"; 03487 case AST_CONTROL_RING: 03488 return "Local Ring"; 03489 case AST_CONTROL_RINGING: 03490 return "Remote end Ringing"; 03491 case AST_CONTROL_ANSWER: 03492 return "Remote end has Answered"; 03493 case AST_CONTROL_BUSY: 03494 return "Remote end is Busy"; 03495 case AST_CONTROL_CONGESTION: 03496 return "Congestion (circuits busy)"; 03497 default: 03498 return "Unknown Reason!!"; 03499 } 03500 }
int ast_channel_register | ( | const struct ast_channel_tech * | tech | ) |
Register a channel technology (a new channel driver) Called by a channel module to register the kind of channels it supports.
tech | Structure defining channel technology or "type" |
Definition at line 497 of file channel.c.
References ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_verbose(), chanlist::list, LOG_DEBUG, LOG_WARNING, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by load_module(), and unload_module().
00498 { 00499 struct chanlist *chan; 00500 00501 AST_LIST_LOCK(&channels); 00502 00503 AST_LIST_TRAVERSE(&backends, chan, list) { 00504 if (!strcasecmp(tech->type, chan->tech->type)) { 00505 ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type); 00506 AST_LIST_UNLOCK(&channels); 00507 return -1; 00508 } 00509 } 00510 00511 if (!(chan = ast_calloc(1, sizeof(*chan)))) { 00512 AST_LIST_UNLOCK(&channels); 00513 return -1; 00514 } 00515 chan->tech = tech; 00516 AST_LIST_INSERT_HEAD(&backends, chan, list); 00517 00518 if (option_debug) 00519 ast_log(LOG_DEBUG, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description); 00520 00521 if (option_verbose > 1) 00522 ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type, 00523 chan->tech->description); 00524 00525 AST_LIST_UNLOCK(&channels); 00526 return 0; 00527 }
int ast_channel_sendhtml | ( | struct ast_channel * | channel, | |
int | subclass, | |||
const char * | data, | |||
int | datalen | |||
) |
Send HTML or URL on link. Returns 0 on success or -1 on failure
Definition at line 3891 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().
03892 { 03893 if (chan->tech->send_html) 03894 return chan->tech->send_html(chan, subclass, data, datalen); 03895 return -1; 03896 }
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 3898 of file channel.c.
References ast_channel_sendhtml(), and AST_HTML_URL.
Referenced by sendurl_exec().
03899 { 03900 return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1); 03901 }
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 5028 of file channel.c.
References ast_log(), errno, LOG_ERROR, ast_channel_tech::setoption, and ast_channel::tech.
Referenced by ast_bridge_call(), common_exec(), conf_run(), dahdi_hangup(), func_channel_write(), func_channel_write_real(), handle_tddmode(), play_record_review(), reset_volumes(), rpt(), set_listen_volume(), set_talk_volume(), and vm_forwardoptions().
05029 { 05030 int res; 05031 05032 if (chan->tech->setoption) { 05033 res = chan->tech->setoption(chan, option, data, datalen); 05034 if (res < 0) 05035 return res; 05036 } else { 05037 errno = ENOSYS; 05038 return -1; 05039 } 05040 if (block) { 05041 /* XXX Implement blocking -- just wait for our option frame reply, discarding 05042 intermediate packets. XXX */ 05043 ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n"); 05044 return -1; 05045 } 05046 return 0; 05047 }
void ast_channel_setwhentohangup | ( | struct ast_channel * | chan, | |
time_t | offset | |||
) |
Set when to hang a channel up.
chan | channel on which to check for hang up | |
offset | offset in seconds from current time of when to hang up This function sets the absolute time out on a channel (when to hang up). |
Definition at line 467 of file channel.c.
References ast_null_frame, ast_queue_frame(), and ast_channel::whentohangup.
Referenced by action_timeout(), and timeout_write().
00468 { 00469 chan->whentohangup = offset ? time(NULL) + offset : 0; 00470 ast_queue_frame(chan, &ast_null_frame); 00471 return; 00472 }
struct ast_silence_generator* ast_channel_start_silence_generator | ( | struct ast_channel * | chan | ) |
Starts a silence generator on the given channel.
chan | The channel to generate silence on |
The pointer returned by this function must be preserved and passed to ast_channel_stop_silence_generator when you wish to stop the silence generation.
Definition at line 5373 of file channel.c.
References ast_activate_generator(), ast_calloc, AST_FORMAT_SLINEAR, ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_channel::name, ast_silence_generator::old_write_format, option_debug, silence_generator, and ast_channel::writeformat.
Referenced by __ast_play_and_record(), ast_bridge_call(), ast_dtmf_stream(), ast_readstring_full(), ast_safe_sleep_conditional(), channel_spy(), waitforring_exec(), and waitforsilence_exec().
05374 { 05375 struct ast_silence_generator *state; 05376 05377 if (!(state = ast_calloc(1, sizeof(*state)))) { 05378 return NULL; 05379 } 05380 05381 state->old_write_format = chan->writeformat; 05382 05383 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) { 05384 ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n"); 05385 free(state); 05386 return NULL; 05387 } 05388 05389 ast_activate_generator(chan, &silence_generator, state); 05390 05391 if (option_debug) 05392 ast_log(LOG_DEBUG, "Started silence generator on '%s'\n", chan->name); 05393 05394 return state; 05395 }
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 5397 of file channel.c.
References ast_deactivate_generator(), ast_log(), ast_set_write_format(), free, LOG_DEBUG, LOG_ERROR, ast_channel::name, ast_silence_generator::old_write_format, and option_debug.
Referenced by __ast_play_and_record(), ast_bridge_call(), ast_dtmf_stream(), ast_readstring_full(), ast_safe_sleep_conditional(), channel_spy(), waitforring_exec(), and waitforsilence_exec().
05398 { 05399 if (!state) 05400 return; 05401 05402 ast_deactivate_generator(chan); 05403 05404 if (option_debug) 05405 ast_log(LOG_DEBUG, "Stopped silence generator on '%s'\n", chan->name); 05406 05407 if (ast_set_write_format(chan, state->old_write_format) < 0) 05408 ast_log(LOG_ERROR, "Could not return write format to its original state\n"); 05409 05410 free(state); 05411 }
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 3886 of file channel.c.
References ast_channel_tech::send_html, and ast_channel::tech.
Referenced by sendurl_exec().
void ast_channel_undefer_dtmf | ( | struct ast_channel * | chan | ) |
Unset defer DTMF flag on channel.
Undo defer. ast_read will return any dtmf characters that were queued
Definition at line 1088 of file channel.c.
References ast_clear_flag, and AST_FLAG_DEFER_DTMF.
Referenced by __adsi_transmit_messages(), find_cache(), and rpt_call().
01089 { 01090 if (chan) 01091 ast_clear_flag(chan, AST_FLAG_DEFER_DTMF); 01092 }
void ast_channel_unregister | ( | const struct ast_channel_tech * | tech | ) |
Unregister a channel technology.
tech | Structure defining channel technology or "type" that was previously registered |
Definition at line 529 of file channel.c.
References AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, ast_log(), ast_verbose(), free, chanlist::list, LOG_DEBUG, option_debug, option_verbose, chanlist::tech, ast_channel_tech::type, and VERBOSE_PREFIX_2.
Referenced by __unload_module(), and unload_module().
00530 { 00531 struct chanlist *chan; 00532 00533 if (option_debug) 00534 ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type); 00535 00536 AST_LIST_LOCK(&channels); 00537 00538 AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) { 00539 if (chan->tech == tech) { 00540 AST_LIST_REMOVE_CURRENT(&backends, list); 00541 free(chan); 00542 if (option_verbose > 1) 00543 ast_verbose(VERBOSE_PREFIX_2 "Unregistered channel type '%s'\n", tech->type); 00544 break; 00545 } 00546 } 00547 AST_LIST_TRAVERSE_SAFE_END 00548 00549 AST_LIST_UNLOCK(&channels); 00550 }
struct ast_channel* ast_channel_walk_locked | ( | const struct ast_channel * | prev | ) |
Browse channels in use Browse the channels currently in use.
prev | where you want to start in the channel list |
Definition at line 1204 of file channel.c.
References channel_find_locked().
Referenced by action_status(), ast_complete_channels(), ast_pickup_call(), complete_ch_helper(), conf_exec(), handle_chanlist(), handle_chanlist_deprecated(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_nodebugchan_deprecated(), next_channel(), pickup_by_exten(), pickup_by_mark(), and softhangup_exec().
01205 { 01206 return channel_find_locked(prev, NULL, 0, NULL, NULL); 01207 }
void ast_channels_init | ( | void | ) |
Provided by channel.c
Definition at line 5295 of file channel.c.
References ast_cli_register_multiple(), ast_plc_reload(), and cli_channel.
Referenced by main().
05296 { 05297 ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry)); 05298 05299 ast_plc_reload(); 05300 }
struct ast_variable* ast_channeltype_list | ( | void | ) |
return an ast_variable list of channeltypes
Definition at line 163 of file channel.c.
References AST_LIST_TRAVERSE, ast_variable_new(), ast_channel_tech::description, chanlist::list, chanlist::tech, ast_channel_tech::type, and var.
00164 { 00165 struct chanlist *cl; 00166 struct ast_variable *var=NULL, *prev = NULL; 00167 AST_LIST_TRAVERSE(&backends, cl, list) { 00168 if (prev) { 00169 if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description))) 00170 prev = prev->next; 00171 } else { 00172 var = ast_variable_new(cl->tech->type, cl->tech->description); 00173 prev = var; 00174 } 00175 } 00176 return var; 00177 }
int ast_check_hangup | ( | struct ast_channel * | chan | ) |
Check to see if a channel is needing hang up.
chan | channel on which to check for hang up This function determines if the channel is being requested to be hung up. |
Definition at line 385 of file channel.c.
References ast_channel::_softhangup, AST_SOFTHANGUP_TIMEOUT, ast_channel::tech_pvt, and ast_channel::whentohangup.
Referenced by __ast_read(), _macro_exec(), action_redirect(), agent_indicate(), agi_handle_command(), announce_thread(), app_exec(), ast_answer(), ast_bridge_call(), ast_call(), ast_channel_bridge(), ast_check_hangup_locked(), ast_indicate_data(), ast_readstring_full(), ast_recvtext(), ast_rtp_bridge(), ast_sendtext(), ast_transfer(), ast_udptl_bridge(), ast_waitfordigit_full(), ast_write(), bridge_native_loop(), builtin_atxfer(), channel_spy(), common_exec(), conf_run(), dahdi_sendtext(), dahdi_setoption(), deadagi_exec(), feature_request_and_dial(), findmeexec(), handle_sendimage(), local_fixup(), pbx_exec(), rpt(), run_agi(), and wait_for_answer().
00386 { 00387 if (chan->_softhangup) /* yes if soft hangup flag set */ 00388 return 1; 00389 if (!chan->tech_pvt) /* yes if no technology private data */ 00390 return 1; 00391 if (!chan->whentohangup) /* no if no hangup scheduled */ 00392 return 0; 00393 if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */ 00394 return 0; 00395 chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */ 00396 return 1; 00397 }
static int ast_check_hangup_locked | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 399 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_check_hangup().
Referenced by ast_channel_bridge().
00400 { 00401 int res; 00402 ast_channel_lock(chan); 00403 res = ast_check_hangup(chan); 00404 ast_channel_unlock(chan); 00405 return res; 00406 }
void ast_deactivate_generator | ( | struct ast_channel * | chan | ) |
Deactive an active generator
Definition at line 1774 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_clear_flag, AST_FLAG_WRITE_INT, AST_GENERATOR_FD, ast_settimeout(), ast_channel::fds, ast_channel::generator, ast_channel::generatordata, and ast_generator::release.
Referenced by __ast_read(), app_exec(), ast_channel_stop_silence_generator(), ast_openstream_full(), ast_playtones_stop(), ast_quiet_chan(), ast_read_generator_actions(), ast_tonepair_stop(), ast_write(), cb_events(), channel_spy(), generator_force(), local_ast_moh_stop(), old_milliwatt_exec(), and wait_for_answer().
01775 { 01776 ast_channel_lock(chan); 01777 if (chan->generatordata) { 01778 if (chan->generator && chan->generator->release) 01779 chan->generator->release(chan, chan->generatordata); 01780 chan->generatordata = NULL; 01781 chan->generator = NULL; 01782 chan->fds[AST_GENERATOR_FD] = -1; 01783 ast_clear_flag(chan, AST_FLAG_WRITE_INT); 01784 ast_settimeout(chan, 0, NULL, NULL); 01785 } 01786 ast_channel_unlock(chan); 01787 }
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 4157 of file channel.c.
References ast_channel::_softhangup, ast_channel::_state, ast_channel::adsicpe, ast_channel::alertpipe, ast_app_group_update(), ast_bridged_channel(), ast_cause2str(), ast_channel_free(), ast_channel_lock, ast_channel_unlock, AST_CONTROL_SRCCHANGE, ast_copy_string(), AST_FLAG_BLOCKING, AST_FLAG_EXCEPTION, AST_FLAG_OUTGOING, AST_FLAG_ZOMBIE, AST_GENERATOR_FD, ast_indicate(), AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_HEAD_NOLOCK, AST_LIST_HEAD_SET_NOLOCK, AST_LIST_INSERT_TAIL, AST_LIST_REMOVE_HEAD, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), AST_MAX_FDS, ast_null_frame, ast_queue_frame(), ast_set_flag, ast_set_read_format(), ast_set_write_format(), AST_SOFTHANGUP_DEV, ast_string_field_set, ast_test_flag, AST_TIMING_FD, ast_channel::blocker, ast_channel::cdr, ast_datastore_info::chan_fixup, ast_channel::cid, clone_variables(), ast_datastore::data, ast_channel::datastores, ast_datastore::entry, errno, ast_channel::fdno, ast_channel::fds, ast_channel_tech::fixup, free_translation(), ast_channel_tech::hangup, ast_datastore::info, language, ast_channel::language, ast_channel::lock, LOG_DEBUG, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::monitor, musicclass, ast_channel::name, name, ast_channel::nativeformats, option_debug, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readformat, ast_channel::readq, report_new_callerid(), t, ast_channel::tech, ast_channel::tech_pvt, ast_channel::timingfd, ast_channel_tech::type, ast_channel::uniqueid, ast_cdr::uniqueid, ast_channel::visible_indication, ast_channel::whentohangup, and ast_channel::writeformat.
Referenced by __ast_read(), ast_async_goto(), ast_hangup(), ast_waitfor_nandfds(), ast_write(), builtin_atxfer(), handle_invite_replaces(), iax_park(), sip_park(), and sip_park_thread().
04158 { 04159 int x,i; 04160 int res=0; 04161 int origstate; 04162 struct ast_frame *cur; 04163 const struct ast_channel_tech *t; 04164 void *t_pvt; 04165 struct ast_callerid tmpcid; 04166 struct ast_channel *clone = original->masq; 04167 struct ast_channel *bridged; 04168 struct ast_cdr *cdr; 04169 int rformat = original->readformat; 04170 int wformat = original->writeformat; 04171 char newn[100]; 04172 char orig[100]; 04173 char masqn[100]; 04174 char zombn[100]; 04175 04176 if (option_debug > 3) 04177 ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n", 04178 clone->name, clone->_state, original->name, original->_state); 04179 04180 /* XXX This operation is a bit odd. We're essentially putting the guts of 04181 * the clone channel into the original channel. Start by killing off the 04182 * original channel's backend. While the features are nice, which is the 04183 * reason we're keeping it, it's still awesomely weird. XXX */ 04184 04185 /* We need the clone's lock, too */ 04186 ast_channel_lock(clone); 04187 04188 if (option_debug > 1) 04189 ast_log(LOG_DEBUG, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock); 04190 04191 /* Having remembered the original read/write formats, we turn off any translation on either 04192 one */ 04193 free_translation(clone); 04194 free_translation(original); 04195 04196 04197 /* Unlink the masquerade */ 04198 original->masq = NULL; 04199 clone->masqr = NULL; 04200 04201 /* Save the original name */ 04202 ast_copy_string(orig, original->name, sizeof(orig)); 04203 /* Save the new name */ 04204 ast_copy_string(newn, clone->name, sizeof(newn)); 04205 /* Create the masq name */ 04206 snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn); 04207 04208 /* Copy the name from the clone channel */ 04209 ast_string_field_set(original, name, newn); 04210 04211 /* Mangle the name of the clone channel */ 04212 ast_string_field_set(clone, name, masqn); 04213 04214 /* Notify any managers of the change, first the masq then the other */ 04215 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid); 04216 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid); 04217 04218 /* Swap the technologies */ 04219 t = original->tech; 04220 original->tech = clone->tech; 04221 clone->tech = t; 04222 04223 /* Swap the cdrs */ 04224 cdr = original->cdr; 04225 /* swap cdr uniqueid between channels, to get cdr uniqueid = channel uniqueid */ 04226 ast_copy_string(clone->cdr->uniqueid, cdr->uniqueid, sizeof(cdr->uniqueid)); 04227 original->cdr = clone->cdr; 04228 clone->cdr = cdr; 04229 04230 t_pvt = original->tech_pvt; 04231 original->tech_pvt = clone->tech_pvt; 04232 clone->tech_pvt = t_pvt; 04233 04234 /* Swap the alertpipes */ 04235 for (i = 0; i < 2; i++) { 04236 x = original->alertpipe[i]; 04237 original->alertpipe[i] = clone->alertpipe[i]; 04238 clone->alertpipe[i] = x; 04239 } 04240 04241 /* 04242 * Swap the readq's. The end result should be this: 04243 * 04244 * 1) All frames should be on the new (original) channel. 04245 * 2) Any frames that were already on the new channel before this 04246 * masquerade need to be at the end of the readq, after all of the 04247 * frames on the old (clone) channel. 04248 * 3) The alertpipe needs to get poked for every frame that was already 04249 * on the new channel, since we are now using the alert pipe from the 04250 * old (clone) channel. 04251 */ 04252 { 04253 AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq; 04254 AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL); 04255 04256 AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list); 04257 AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list); 04258 04259 while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) { 04260 AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list); 04261 if (original->alertpipe[1] > -1) { 04262 int poke = 0; 04263 04264 if (write(original->alertpipe[1], &poke, sizeof(poke)) < 0) { 04265 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 04266 } 04267 } 04268 } 04269 } 04270 04271 /* Swap the raw formats */ 04272 x = original->rawreadformat; 04273 original->rawreadformat = clone->rawreadformat; 04274 clone->rawreadformat = x; 04275 x = original->rawwriteformat; 04276 original->rawwriteformat = clone->rawwriteformat; 04277 clone->rawwriteformat = x; 04278 04279 clone->_softhangup = AST_SOFTHANGUP_DEV; 04280 04281 /* And of course, so does our current state. Note we need not 04282 call ast_setstate since the event manager doesn't really consider 04283 these separate. We do this early so that the clone has the proper 04284 state of the original channel. */ 04285 origstate = original->_state; 04286 original->_state = clone->_state; 04287 clone->_state = origstate; 04288 04289 if (clone->tech->fixup){ 04290 res = clone->tech->fixup(original, clone); 04291 if (res) 04292 ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name); 04293 } 04294 04295 /* Start by disconnecting the original's physical side */ 04296 if (clone->tech->hangup) 04297 res = clone->tech->hangup(clone); 04298 if (res) { 04299 ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n"); 04300 ast_channel_unlock(clone); 04301 return -1; 04302 } 04303 04304 snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig); 04305 /* Mangle the name of the clone channel */ 04306 ast_string_field_set(clone, name, zombn); 04307 manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid); 04308 04309 /* Update the type. */ 04310 t_pvt = original->monitor; 04311 original->monitor = clone->monitor; 04312 clone->monitor = t_pvt; 04313 04314 /* Keep the same language. */ 04315 ast_string_field_set(original, language, clone->language); 04316 /* Copy the FD's other than the generator fd */ 04317 for (x = 0; x < AST_MAX_FDS; x++) { 04318 if (x != AST_GENERATOR_FD) 04319 original->fds[x] = clone->fds[x]; 04320 } 04321 04322 ast_app_group_update(clone, original); 04323 /* Move data stores over */ 04324 if (AST_LIST_FIRST(&clone->datastores)) { 04325 struct ast_datastore *ds; 04326 /* We use a safe traversal here because some fixup routines actually 04327 * remove the datastore from the list and free them. 04328 */ 04329 AST_LIST_TRAVERSE_SAFE_BEGIN(&clone->datastores, ds, entry) { 04330 if (ds->info->chan_fixup) 04331 ds->info->chan_fixup(ds->data, clone, original); 04332 } 04333 AST_LIST_TRAVERSE_SAFE_END; 04334 AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry); 04335 } 04336 04337 clone_variables(original, clone); 04338 /* Presense of ADSI capable CPE follows clone */ 04339 original->adsicpe = clone->adsicpe; 04340 /* Bridge remains the same */ 04341 /* CDR fields remain the same */ 04342 /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */ 04343 /* Application and data remain the same */ 04344 /* Clone exception becomes real one, as with fdno */ 04345 ast_set_flag(original, ast_test_flag(clone, AST_FLAG_OUTGOING | AST_FLAG_EXCEPTION)); 04346 original->fdno = clone->fdno; 04347 /* Schedule context remains the same */ 04348 /* Stream stuff stays the same */ 04349 /* Keep the original state. The fixup code will need to work with it most likely */ 04350 04351 /* Just swap the whole structures, nevermind the allocations, they'll work themselves 04352 out. */ 04353 tmpcid = original->cid; 04354 original->cid = clone->cid; 04355 clone->cid = tmpcid; 04356 report_new_callerid(original); 04357 04358 /* Restore original timing file descriptor */ 04359 original->fds[AST_TIMING_FD] = original->timingfd; 04360 04361 /* Our native formats are different now */ 04362 original->nativeformats = clone->nativeformats; 04363 04364 /* Context, extension, priority, app data, jump table, remain the same */ 04365 /* pvt switches. pbx stays the same, as does next */ 04366 04367 /* Set the write format */ 04368 ast_set_write_format(original, wformat); 04369 04370 /* Set the read format */ 04371 ast_set_read_format(original, rformat); 04372 04373 /* Copy the music class */ 04374 ast_string_field_set(original, musicclass, clone->musicclass); 04375 04376 /* Copy whentohangup time */ 04377 original->whentohangup = clone->whentohangup; 04378 04379 if (option_debug) 04380 ast_log(LOG_DEBUG, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat); 04381 04382 /* Okay. Last thing is to let the channel driver know about all this mess, so he 04383 can fix up everything as best as possible */ 04384 if (original->tech->fixup) { 04385 res = original->tech->fixup(clone, original); 04386 if (res) { 04387 ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n", 04388 original->tech->type, original->name); 04389 ast_channel_unlock(clone); 04390 return -1; 04391 } 04392 } else 04393 ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n", 04394 original->tech->type, original->name); 04395 04396 /* 04397 * If an indication is currently playing, maintain it on the channel 04398 * that is taking the place of original 04399 * 04400 * This is needed because the masquerade is swapping out in the internals 04401 * of this channel, and the new channel private data needs to be made 04402 * aware of the current visible indication (RINGING, CONGESTION, etc.) 04403 */ 04404 if (original->visible_indication) { 04405 ast_indicate(original, original->visible_indication); 04406 } 04407 04408 /* Now, at this point, the "clone" channel is totally F'd up. We mark it as 04409 a zombie so nothing tries to touch it. If it's already been marked as a 04410 zombie, then free it now (since it already is considered invalid). */ 04411 if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) { 04412 if (option_debug) 04413 ast_log(LOG_DEBUG, "Destroying channel clone '%s'\n", clone->name); 04414 ast_channel_unlock(clone); 04415 manager_event(EVENT_FLAG_CALL, "Hangup", 04416 "Channel: %s\r\n" 04417 "Uniqueid: %s\r\n" 04418 "Cause: %d\r\n" 04419 "Cause-txt: %s\r\n", 04420 clone->name, 04421 clone->uniqueid, 04422 clone->hangupcause, 04423 ast_cause2str(clone->hangupcause) 04424 ); 04425 ast_channel_free(clone); 04426 } else { 04427 if (option_debug) 04428 ast_log(LOG_DEBUG, "Released clone lock on '%s'\n", clone->name); 04429 ast_set_flag(clone, AST_FLAG_ZOMBIE); 04430 ast_queue_frame(clone, &ast_null_frame); 04431 ast_channel_unlock(clone); 04432 } 04433 04434 /* Signal any blocker */ 04435 if (ast_test_flag(original, AST_FLAG_BLOCKING)) 04436 pthread_kill(original->blocker, SIGURG); 04437 if (option_debug) 04438 ast_log(LOG_DEBUG, "Done Masquerading %s (%d)\n", original->name, original->_state); 04439 04440 if ((bridged = ast_bridged_channel(original))) { 04441 ast_channel_lock(bridged); 04442 ast_indicate(bridged, AST_CONTROL_SRCCHANGE); 04443 ast_channel_unlock(bridged); 04444 } 04445 04446 ast_indicate(original, AST_CONTROL_SRCCHANGE); 04447 04448 return 0; 04449 }
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 4554 of file channel.c.
References AST_BRIDGE_COMPLETE, AST_BRIDGE_DTMF_CHANNEL_0, AST_BRIDGE_DTMF_CHANNEL_1, AST_BRIDGE_RETRY, AST_FEATURE_WARNING_ACTIVE, ast_jb_do_usecheck(), ast_jb_empty_and_reset(), ast_samp2tv(), ast_set_flag, ast_tvadd(), ast_tvdiff_ms(), ast_tvnow(), ast_tvzero(), config, f, ast_channel::nativeformats, and ast_channel::tech_pvt.
Referenced by ast_channel_bridge().
04557 { 04558 /* Copy voice back and forth between the two channels. */ 04559 struct ast_channel *cs[3]; 04560 struct ast_frame *f; 04561 enum ast_bridge_result res = AST_BRIDGE_COMPLETE; 04562 int o0nativeformats; 04563 int o1nativeformats; 04564 int watch_c0_dtmf; 04565 int watch_c1_dtmf; 04566 void *pvt0, *pvt1; 04567 /* Indicates whether a frame was queued into a jitterbuffer */ 04568 int frame_put_in_jb = 0; 04569 int jb_in_use; 04570 int to; 04571 04572 cs[0] = c0; 04573 cs[1] = c1; 04574 pvt0 = c0->tech_pvt; 04575 pvt1 = c1->tech_pvt; 04576 o0nativeformats = c0->nativeformats; 04577 o1nativeformats = c1->nativeformats; 04578 watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0; 04579 watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1; 04580 04581 /* Check the need of a jitterbuffer for each channel */ 04582 jb_in_use = ast_jb_do_usecheck(c0, c1); 04583 if (jb_in_use) 04584 ast_jb_empty_and_reset(c0, c1); 04585 04586 if (config->feature_timer > 0 && ast_tvzero(config->nexteventts)) { 04587 /* calculate when the bridge should possibly break 04588 * if a partial feature match timed out */ 04589 config->partialfeature_timer = ast_tvadd(ast_tvnow(), ast_samp2tv(config->feature_timer, 1000)); 04590 } else { 04591 memset(&config->partialfeature_timer, 0, sizeof(config->partialfeature_timer)); 04592 } 04593 04594 for (;;) { 04595 struct ast_channel *who, *other; 04596 04597 if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) || 04598 (o0nativeformats != c0->nativeformats) || 04599 (o1nativeformats != c1->nativeformats)) { 04600 /* Check for Masquerade, codec changes, etc */ 04601 res = AST_BRIDGE_RETRY; 04602 break; 04603 } 04604 if (bridge_end.tv_sec) { 04605 to = ast_tvdiff_ms(bridge_end, ast_tvnow()); 04606 if (to <= 0) { 04607 if (config->timelimit) { 04608 res = AST_BRIDGE_RETRY; 04609 /* generic bridge ending to play warning */ 04610 ast_set_flag(config, AST_FEATURE_WARNING_ACTIVE); 04611 } else { 04612 res = AST_BRIDGE_COMPLETE; 04613 } 04614 break; 04615 } 04616 } else { 04617 /* If a feature has been started and the bridge is configured to 04618 * to not break, leave the channel bridge when the feature timer 04619 * time has elapsed so the DTMF will be sent to the other side. 04620 */ 04621 if (!ast_tvzero(config->partialfeature_timer)) { 04622 int diff = ast_tvdiff_ms(config->partialfeature_timer, ast_tvnow()); 04623 if (diff <= 0) { 04624 res = AST_BRIDGE_RETRY; 04625 break; 04626 } 04627 } 04628 to = -1; 04629 } 04630 /* Calculate the appropriate max sleep interval - in general, this is the time, 04631 left to the closest jb delivery moment */ 04632 if (jb_in_use) 04633 to = ast_jb_get_when_to_wakeup(c0, c1, to); 04634 who = ast_waitfor_n(cs, 2, &to); 04635 if (!who) { 04636 /* No frame received within the specified timeout - check if we have to deliver now */ 04637 if (jb_in_use) 04638 ast_jb_get_and_deliver(c0, c1); 04639 if ((c0->_softhangup | c1->_softhangup) & AST_SOFTHANGUP_UNBRIDGE) {/* Bit operators are intentional. */ 04640 if (c0->_softhangup & AST_SOFTHANGUP_UNBRIDGE) { 04641 ast_channel_clear_softhangup(c0, AST_SOFTHANGUP_UNBRIDGE); 04642 } 04643 if (c1->_softhangup & AST_SOFTHANGUP_UNBRIDGE) { 04644 ast_channel_clear_softhangup(c1, AST_SOFTHANGUP_UNBRIDGE); 04645 } 04646 c0->_bridge = c1; 04647 c1->_bridge = c0; 04648 } 04649 continue; 04650 } 04651 f = ast_read(who); 04652 if (!f) { 04653 *fo = NULL; 04654 *rc = who; 04655 if (option_debug) 04656 ast_log(LOG_DEBUG, "Didn't get a frame from channel: %s\n",who->name); 04657 break; 04658 } 04659 04660 other = (who == c0) ? c1 : c0; /* the 'other' channel */ 04661 /* Try add the frame info the who's bridged channel jitterbuff */ 04662 if (jb_in_use) 04663 frame_put_in_jb = !ast_jb_put(other, f); 04664 04665 if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) { 04666 int bridge_exit = 0; 04667 04668 switch (f->subclass) { 04669 case AST_CONTROL_HOLD: 04670 case AST_CONTROL_UNHOLD: 04671 case AST_CONTROL_VIDUPDATE: 04672 case AST_CONTROL_SRCUPDATE: 04673 case AST_CONTROL_SRCCHANGE: 04674 ast_indicate_data(other, f->subclass, f->data, f->datalen); 04675 if (jb_in_use) { 04676 ast_jb_empty_and_reset(c0, c1); 04677 } 04678 break; 04679 default: 04680 *fo = f; 04681 *rc = who; 04682 bridge_exit = 1; 04683 if (option_debug) 04684 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name); 04685 break; 04686 } 04687 if (bridge_exit) 04688 break; 04689 } 04690 if ((f->frametype == AST_FRAME_VOICE) || 04691 (f->frametype == AST_FRAME_DTMF_BEGIN) || 04692 (f->frametype == AST_FRAME_DTMF) || 04693 (f->frametype == AST_FRAME_VIDEO) || 04694 (f->frametype == AST_FRAME_IMAGE) || 04695 (f->frametype == AST_FRAME_HTML) || 04696 (f->frametype == AST_FRAME_MODEM) || 04697 (f->frametype == AST_FRAME_TEXT)) { 04698 /* monitored dtmf causes exit from bridge */ 04699 int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf; 04700 04701 if (monitored_source && 04702 (f->frametype == AST_FRAME_DTMF_END || 04703 f->frametype == AST_FRAME_DTMF_BEGIN)) { 04704 *fo = f; 04705 *rc = who; 04706 if (option_debug) 04707 ast_log(LOG_DEBUG, "Got DTMF %s on channel (%s)\n", 04708 f->frametype == AST_FRAME_DTMF_END ? "end" : "begin", 04709 who->name); 04710 04711 break; 04712 } 04713 /* Write immediately frames, not passed through jb */ 04714 if (!frame_put_in_jb) 04715 ast_write(other, f); 04716 04717 /* Check if we have to deliver now */ 04718 if (jb_in_use) 04719 ast_jb_get_and_deliver(c0, c1); 04720 } 04721 /* XXX do we want to pass on also frames not matched above ? */ 04722 ast_frfree(f); 04723 04724 /* Swap who gets priority */ 04725 cs[2] = cs[0]; 04726 cs[0] = cs[1]; 04727 cs[1] = cs[2]; 04728 } 04729 return res; 04730 }
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 1229 of file channel.c.
References channel_find_locked().
01230 { 01231 return channel_find_locked(NULL, NULL, 0, context, exten); 01232 }
struct ast_channel* ast_get_channel_by_name_locked | ( | const char * | name | ) |
Get channel by name (locks channel).
Definition at line 1210 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(), ast_bridge_call(), asyncgoto_exec(), change_monitor_action(), do_pause_or_unpause(), get_zap_channel_locked(), handle_channelstatus(), handle_core_set_debug_channel(), handle_debugchan_deprecated(), handle_getvariablefull(), handle_hangup(), handle_nodebugchan_deprecated(), handle_showchan(), handle_showchan_deprecated(), handle_softhangup(), manager_park(), manager_play_dtmf(), park_call_full(), pbx_builtin_importvar(), start_monitor_action(), and stop_monitor_action().
01211 { 01212 return channel_find_locked(NULL, name, 0, NULL, NULL); 01213 }
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 1216 of file channel.c.
References channel_find_locked().
Referenced by ast_parse_device_state(), common_exec(), and mixmonitor_cli().
01217 { 01218 return channel_find_locked(NULL, name, namelen, NULL, NULL); 01219 }
struct ast_channel_tech* ast_get_channel_tech | ( | const char * | name | ) |
Get a channel technology structure by name.
name | name of technology to find |
Definition at line 552 of file channel.c.
References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), chanlist::list, LOG_WARNING, chanlist::tech, and ast_channel_tech::type.
Referenced by ast_device_state().
00553 { 00554 struct chanlist *chanls; 00555 const struct ast_channel_tech *ret = NULL; 00556 00557 if (AST_LIST_LOCK(&channels)) { 00558 ast_log(LOG_WARNING, "Unable to lock channel tech list\n"); 00559 return NULL; 00560 } 00561 00562 AST_LIST_TRAVERSE(&backends, chanls, list) { 00563 if (!strcasecmp(name, chanls->tech->type)) { 00564 ret = chanls->tech; 00565 break; 00566 } 00567 } 00568 00569 AST_LIST_UNLOCK(&channels); 00570 00571 return ret; 00572 }
ast_group_t ast_get_group | ( | const char * | s | ) |
Definition at line 5201 of file channel.c.
References ast_log(), ast_strdupa, ast_strlen_zero(), group, and LOG_ERROR.
Referenced by _parse(), build_device(), build_gateway(), build_peer(), build_user(), func_channel_write_real(), process_dahdi(), and read_agent_config().
05202 { 05203 char *piece; 05204 char *c; 05205 int start=0, finish=0, x; 05206 ast_group_t group = 0; 05207 05208 if (ast_strlen_zero(s)) 05209 return 0; 05210 05211 c = ast_strdupa(s); 05212 05213 while ((piece = strsep(&c, ","))) { 05214 if (sscanf(piece, "%30d-%30d", &start, &finish) == 2) { 05215 /* Range */ 05216 } else if (sscanf(piece, "%30d", &start)) { 05217 /* Just one */ 05218 finish = start; 05219 } else { 05220 ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece); 05221 continue; 05222 } 05223 for (x = start; x <= finish; x++) { 05224 if ((x > 63) || (x < 0)) { 05225 ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x); 05226 } else 05227 group |= ((ast_group_t) 1 << x); 05228 } 05229 } 05230 return group; 05231 }
int ast_hangup | ( | struct ast_channel * | chan | ) |
Hang up a channel.
chan | channel to hang up |
Definition at line 1635 of file channel.c.
References ast_assert, ast_audiohook_detach_list(), ast_autoservice_stop(), ast_cause2str(), ast_cdr_detach(), ast_cdr_end(), AST_CDR_FLAG_BRIDGED, AST_CDR_FLAG_DIALED, AST_CDR_FLAG_POST_DISABLED, AST_CDR_NULL, ast_channel_free(), ast_channel_lock, ast_channel_unlock, ast_clear_flag, ast_closestream(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_IN_CHANNEL_LIST, AST_FLAG_ZOMBIE, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, ast_log(), ast_set_flag, ast_test_flag, ast_channel::audiohooks, ast_channel::blocker, ast_channel::blockproc, ast_channel::cdr, ast_cdr::disposition, free_translation(), ast_channel::generator, ast_channel::generatordata, ast_channel_tech::hangup, ast_channel::hangupcause, LOG_DEBUG, LOG_ERROR, manager_event(), ast_channel::masq, ast_channel::masqr, ast_channel::name, option_debug, ast_generator::release, ast_channel::sched, sched_context_destroy(), ast_channel::stream, ast_channel::tech, ast_channel::uniqueid, and ast_channel::vstream.
Referenced by __ast_request_and_dial(), __oh323_new(), agent_hangup(), agent_read(), alsa_new(), answer_exec_run(), app_exec(), ast_async_goto(), ast_bridge_call_thread(), ast_call_forward(), ast_dial_destroy(), ast_dial_hangup(), ast_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_run(), connect_link(), dahdi_handle_event(), dahdi_new(), do_hang(), do_idle_thread(), do_parking_thread(), feature_request_and_dial(), features_hangup(), findmeexec(), gtalk_new(), handle_enbloc_call_message(), handle_frame(), handle_frame_ownerless(), handle_hd_hf(), handle_init_event(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_soft_key_event_message(), handle_stimulus_message(), hangup_chan(), hangupcalls(), hanguptree(), iax2_request(), iax_park(), iax_park_thread(), local_attended_transfer(), local_hangup(), masq_park_call(), mgcp_new(), mgcp_ss(), monitor_dial(), nbs_new(), oss_new(), park_exec(), parkandannounce_exec(), phone_new(), pri_dchannel(), rpt(), rpt_call(), rpt_tele_thread(), sip_new(), sip_park(), sip_park_thread(), skinny_new(), skinny_ss(), ss_thread(), wait_for_answer(), and wait_for_winner().
01636 { 01637 int res = 0; 01638 01639 /* Don't actually hang up a channel that will masquerade as someone else, or 01640 if someone is going to masquerade as us */ 01641 ast_channel_lock(chan); 01642 01643 if (chan->audiohooks) { 01644 ast_audiohook_detach_list(chan->audiohooks); 01645 chan->audiohooks = NULL; 01646 } 01647 01648 ast_autoservice_stop(chan); 01649 01650 if (chan->masq) { 01651 if (ast_do_masquerade(chan)) 01652 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 01653 } 01654 01655 if (chan->masq) { 01656 ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name); 01657 ast_channel_unlock(chan); 01658 return 0; 01659 } 01660 /* If this channel is one which will be masqueraded into something, 01661 mark it as a zombie already, so we know to free it later */ 01662 if (chan->masqr) { 01663 ast_set_flag(chan, AST_FLAG_ZOMBIE); 01664 ast_channel_unlock(chan); 01665 return 0; 01666 } 01667 ast_channel_unlock(chan); 01668 01669 AST_LIST_LOCK(&channels); 01670 if (!AST_LIST_REMOVE(&channels, chan, chan_list)) { 01671 ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n"); 01672 } 01673 ast_clear_flag(chan, AST_FLAG_IN_CHANNEL_LIST); 01674 AST_LIST_UNLOCK(&channels); 01675 01676 ast_channel_lock(chan); 01677 free_translation(chan); 01678 /* Close audio stream */ 01679 if (chan->stream) { 01680 ast_closestream(chan->stream); 01681 chan->stream = NULL; 01682 } 01683 /* Close video stream */ 01684 if (chan->vstream) { 01685 ast_closestream(chan->vstream); 01686 chan->vstream = NULL; 01687 } 01688 if (chan->sched) { 01689 sched_context_destroy(chan->sched); 01690 chan->sched = NULL; 01691 } 01692 01693 if (chan->generatordata) /* Clear any tone stuff remaining */ 01694 chan->generator->release(chan, chan->generatordata); 01695 chan->generatordata = NULL; 01696 chan->generator = NULL; 01697 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) { 01698 ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd " 01699 "is blocked by thread %ld in procedure %s! Expect a failure\n", 01700 (long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc); 01701 ast_assert(ast_test_flag(chan, AST_FLAG_BLOCKING) == 0); 01702 } 01703 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) { 01704 if (option_debug) 01705 ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name); 01706 if (chan->tech->hangup) 01707 res = chan->tech->hangup(chan); 01708 } else { 01709 if (option_debug) 01710 ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name); 01711 } 01712 01713 ast_channel_unlock(chan); 01714 manager_event(EVENT_FLAG_CALL, "Hangup", 01715 "Channel: %s\r\n" 01716 "Uniqueid: %s\r\n" 01717 "Cause: %d\r\n" 01718 "Cause-txt: %s\r\n", 01719 chan->name, 01720 chan->uniqueid, 01721 chan->hangupcause, 01722 ast_cause2str(chan->hangupcause) 01723 ); 01724 01725 if (chan->cdr && !ast_test_flag(chan->cdr, AST_CDR_FLAG_BRIDGED) && 01726 !ast_test_flag(chan->cdr, AST_CDR_FLAG_POST_DISABLED) && 01727 (chan->cdr->disposition != AST_CDR_NULL || ast_test_flag(chan->cdr, AST_CDR_FLAG_DIALED))) { 01728 ast_channel_lock(chan); 01729 01730 ast_cdr_end(chan->cdr); 01731 ast_cdr_detach(chan->cdr); 01732 chan->cdr = NULL; 01733 ast_channel_unlock(chan); 01734 } 01735 01736 ast_channel_free(chan); 01737 01738 return res; 01739 }
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 2727 of file channel.c.
References ast_indicate_data().
Referenced by __ast_play_and_record(), agent_request(), answer_trunk_chan(), ast_answer(), ast_bridge_call(), ast_channel_bridge(), ast_do_masquerade(), ast_dtmf_stream(), attempt_transfer(), builtin_atxfer(), builtin_blindtransfer(), conf_run(), disa_exec(), do_parking_thread(), feature_request_and_dial(), features_indicate(), finishup(), function_remote(), handle_frame(), handle_recordfile(), handle_request_refer(), local_attended_transfer(), mgcp_ss(), monitor_dial(), park_exec(), pbx_builtin_busy(), pbx_builtin_congestion(), pbx_builtin_proceeding(), pbx_builtin_progress(), pbx_builtin_ringing(), pbx_builtin_waitexten(), queue_exec(), rna(), rpt(), send_waveform_to_channel(), skinny_ss(), sla_handle_hold_event(), sla_station_exec(), sla_trunk_exec(), and wait_for_answer().
02728 { 02729 return ast_indicate_data(chan, condition, NULL, 0); 02730 }
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 2767 of file channel.c.
References ast_channel::_state, ast_channel_lock, ast_channel_unlock, ast_check_hangup(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_END_OF_Q, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_SRCCHANGE, AST_CONTROL_SRCUPDATE, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_CONTROL_WINK, AST_FLAG_ZOMBIE, ast_get_indication_tone(), ast_log(), ast_playtones_start(), ast_playtones_stop(), AST_STATE_UP, ast_test_flag, tone_zone_sound::data, ast_channel_tech::indicate, is_visible_indication(), LOG_DEBUG, ast_channel::name, option_debug, ast_channel::tech, ast_channel::visible_indication, and ast_channel::zone.
Referenced by __login_exec(), agent_hangup(), ast_bridge_call(), ast_indicate(), bridge_native_loop(), do_parking_thread(), park_call_full(), pbx_builtin_waitexten(), and wait_for_answer().
02769 { 02770 /* By using an enum, we'll get compiler warnings for values not handled 02771 * in switch statements. */ 02772 enum ast_control_frame_type condition = _condition; 02773 const struct tone_zone_sound *ts = NULL; 02774 int res = -1; 02775 02776 ast_channel_lock(chan); 02777 02778 /* Don't bother if the channel is about to go away, anyway. */ 02779 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02780 ast_channel_unlock(chan); 02781 return -1; 02782 } 02783 02784 if (chan->tech->indicate) { 02785 /* See if the channel driver can handle this condition. */ 02786 res = chan->tech->indicate(chan, condition, data, datalen); 02787 } 02788 02789 ast_channel_unlock(chan); 02790 02791 if (chan->tech->indicate && !res) { 02792 /* The channel driver successfully handled this indication */ 02793 if (is_visible_indication(condition)) { 02794 chan->visible_indication = condition; 02795 } 02796 return 0; 02797 } 02798 02799 /* The channel driver does not support this indication, let's fake 02800 * it by doing our own tone generation if applicable. */ 02801 02802 /*!\note If we compare the enumeration type, which does not have any 02803 * negative constants, the compiler may optimize this code away. 02804 * Therefore, we must perform an integer comparison here. */ 02805 if (_condition < 0) { 02806 /* Stop any tones that are playing */ 02807 ast_playtones_stop(chan); 02808 return 0; 02809 } 02810 02811 /* Handle conditions that we have tones for. */ 02812 switch (condition) { 02813 case AST_CONTROL_RINGING: 02814 ts = ast_get_indication_tone(chan->zone, "ring"); 02815 /* It is common practice for channel drivers to return -1 if trying 02816 * to indicate ringing on a channel which is up. The idea is to let the 02817 * core generate the ringing inband. However, we don't want the 02818 * warning message about not being able to handle the specific indication 02819 * to print nor do we want ast_indicate_data to return an "error" for this 02820 * condition 02821 */ 02822 if (chan->_state == AST_STATE_UP) { 02823 res = 0; 02824 } 02825 break; 02826 case AST_CONTROL_BUSY: 02827 ts = ast_get_indication_tone(chan->zone, "busy"); 02828 break; 02829 case AST_CONTROL_CONGESTION: 02830 ts = ast_get_indication_tone(chan->zone, "congestion"); 02831 break; 02832 case AST_CONTROL_PROGRESS: 02833 case AST_CONTROL_PROCEEDING: 02834 case AST_CONTROL_VIDUPDATE: 02835 case AST_CONTROL_SRCUPDATE: 02836 case AST_CONTROL_SRCCHANGE: 02837 case AST_CONTROL_RADIO_KEY: 02838 case AST_CONTROL_RADIO_UNKEY: 02839 case AST_CONTROL_OPTION: 02840 case AST_CONTROL_WINK: 02841 case AST_CONTROL_FLASH: 02842 case AST_CONTROL_OFFHOOK: 02843 case AST_CONTROL_TAKEOFFHOOK: 02844 case AST_CONTROL_ANSWER: 02845 case AST_CONTROL_HANGUP: 02846 case AST_CONTROL_RING: 02847 case AST_CONTROL_HOLD: 02848 case AST_CONTROL_UNHOLD: 02849 case AST_CONTROL_END_OF_Q: 02850 /* Nothing left to do for these. */ 02851 res = 0; 02852 break; 02853 } 02854 02855 if (ts && ts->data[0]) { 02856 /* We have a tone to play, yay. */ 02857 if (option_debug) { 02858 ast_log(LOG_DEBUG, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition); 02859 } 02860 res = ast_playtones_start(chan, 0, ts->data, 1); 02861 chan->visible_indication = condition; 02862 } 02863 02864 if (res) { 02865 /* not handled */ 02866 ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name); 02867 } 02868 02869 return res; 02870 }
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 5237 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by load_module(), and reload().
05240 { 05241 ast_moh_start_ptr = start_ptr; 05242 ast_moh_stop_ptr = stop_ptr; 05243 ast_moh_cleanup_ptr = cleanup_ptr; 05244 }
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 2712 of file channel.c.
References ast_opt_internal_timing, and ast_channel::timingfd.
Referenced by add_sdp(), and ast_read_generator_actions().
02713 { 02714 return (ast_opt_internal_timing && chan->timingfd > -1); 02715 }
int ast_is_deferrable_frame | ( | const struct ast_frame * | frame | ) |
Should we keep this frame for later?
There are functions such as ast_safe_sleep which will service a channel to ensure that it does not have a large backlog of queued frames. When this happens, we want to hold on to specific frame types and just drop others. This function will tell if the frame we just read should be held onto.
frame | The frame we just read |
1 | frame should be kept | |
0 | frame should be dropped |
Definition at line 1241 of file channel.c.
References AST_FRAME_CNG, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_IMAGE, AST_FRAME_MODEM, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, and ast_frame::frametype.
Referenced by ast_safe_sleep_conditional(), autoservice_run(), and feature_request_and_dial().
01242 { 01243 /* Do not add a default entry in this switch statement. Each new 01244 * frame type should be addressed directly as to whether it should 01245 * be queued up or not. 01246 */ 01247 switch (frame->frametype) { 01248 case AST_FRAME_CONTROL: 01249 case AST_FRAME_TEXT: 01250 case AST_FRAME_IMAGE: 01251 case AST_FRAME_HTML: 01252 return 1; 01253 01254 case AST_FRAME_DTMF_END: 01255 case AST_FRAME_DTMF_BEGIN: 01256 case AST_FRAME_VOICE: 01257 case AST_FRAME_VIDEO: 01258 case AST_FRAME_NULL: 01259 case AST_FRAME_IAX: 01260 case AST_FRAME_CNG: 01261 case AST_FRAME_MODEM: 01262 return 0; 01263 } 01264 return 0; 01265 }
void ast_moh_cleanup | ( | struct ast_channel * | chan | ) |
Definition at line 5274 of file channel.c.
References ast_moh_cleanup_ptr.
Referenced by ast_channel_free().
05275 { 05276 if (ast_moh_cleanup_ptr) 05277 ast_moh_cleanup_ptr(chan); 05278 }
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 5254 of file channel.c.
References ast_moh_start_ptr, ast_verbose(), option_verbose, and VERBOSE_PREFIX_3.
Referenced by alsa_indicate(), app_exec(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), moh0_exec(), moh1_exec(), moh3_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), rna(), say_periodic_announcement(), say_position(), sip_indicate(), and skinny_indicate().
05255 { 05256 if (ast_moh_start_ptr) 05257 return ast_moh_start_ptr(chan, mclass, interpclass); 05258 05259 if (option_verbose > 2) { 05260 ast_verbose(VERBOSE_PREFIX_3 "Music class %s requested but no musiconhold loaded.\n", 05261 mclass ? mclass : (interpclass ? interpclass : "default")); 05262 } 05263 05264 return 0; 05265 }
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 5268 of file channel.c.
References ast_moh_stop_ptr.
Referenced by alsa_indicate(), app_exec(), ast_quiet_chan(), conf_run(), dahdi_indicate(), feature_exec_app(), gtalk_indicate(), handle_setmusic(), iax2_indicate(), local_indicate(), mgcp_indicate(), misdn_indication(), moh0_exec(), moh1_exec(), moh4_exec(), oh323_indicate(), oss_indicate(), phone_indicate(), queue_exec(), retrydial_exec(), say_periodic_announcement(), say_position(), sip_indicate(), and skinny_indicate().
05269 { 05270 if (ast_moh_stop_ptr) 05271 ast_moh_stop_ptr(chan); 05272 }
int ast_plc_reload | ( | void | ) |
Reload genericplc configuration value from codecs.conf.
Implementation is in main/channel.c
Definition at line 5280 of file channel.c.
References ast_config_load(), AST_OPT_FLAG_GENERIC_PLC, ast_options, ast_set2_flag, ast_true(), ast_variable_browse(), and var.
Referenced by ast_channels_init().
05281 { 05282 struct ast_variable *var; 05283 struct ast_config *cfg = ast_config_load("codecs.conf"); 05284 if (!cfg) 05285 return 0; 05286 for (var = ast_variable_browse(cfg, "plc"); var; var = var->next) { 05287 if (!strcasecmp(var->name, "genericplc")) { 05288 ast_set2_flag(&ast_options, ast_true(var->value), AST_OPT_FLAG_GENERIC_PLC); 05289 } 05290 } 05291 ast_config_destroy(cfg); 05292 return 0; 05293 }
char* ast_print_group | ( | char * | buf, | |
int | buflen, | |||
ast_group_t | group | |||
) |
print call- and pickup groups into buffer
Definition at line 5303 of file channel.c.
References first.
Referenced by _sip_show_peer(), func_channel_read(), misdn_cfg_get_config_string(), print_group(), read_config(), and serialize_showchan().
05304 { 05305 unsigned int i; 05306 int first=1; 05307 char num[3]; 05308 05309 buf[0] = '\0'; 05310 05311 if (!group) /* Return empty string if no group */ 05312 return buf; 05313 05314 for (i = 0; i <= 63; i++) { /* Max group is 63 */ 05315 if (group & ((ast_group_t) 1 << i)) { 05316 if (!first) { 05317 strncat(buf, ", ", buflen - strlen(buf) - 1); 05318 } else { 05319 first=0; 05320 } 05321 snprintf(num, sizeof(num), "%u", i); 05322 strncat(buf, num, buflen - strlen(buf) - 1); 05323 } 05324 } 05325 return buf; 05326 }
int ast_prod | ( | struct ast_channel * | chan | ) |
Send empty audio to prime a channel driver.
Definition at line 2997 of file channel.c.
References ast_channel::_state, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), AST_STATE_UP, ast_write(), ast_frame::data, LOG_DEBUG, ast_channel::name, option_debug, ast_channel::rawwriteformat, ast_frame::src, and ast_frame::subclass.
Referenced by ast_activate_generator().
02998 { 02999 struct ast_frame a = { AST_FRAME_VOICE }; 03000 char nothing[128]; 03001 03002 /* Send an empty audio frame to get things moving */ 03003 if (chan->_state != AST_STATE_UP) { 03004 if (option_debug) 03005 ast_log(LOG_DEBUG, "Prodding channel '%s'\n", chan->name); 03006 a.subclass = chan->rawwriteformat; 03007 a.data = nothing + AST_FRIENDLY_OFFSET; 03008 a.src = "ast_prod"; /* this better match check in ast_write */ 03009 if (ast_write(chan, &a)) 03010 ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name); 03011 } 03012 return 0; 03013 }
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 1053 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by __ast_read(), __dahdi_exception(), __oh323_update_info(), attempt_transfer(), auto_congest(), cb_events(), dahdi_handle_event(), dahdi_hangup(), gtalk_is_answered(), gtalk_ringing_ack(), handle_hd_hf(), handle_offhook_message(), handle_request(), handle_request_bye(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_response(), handle_response_invite(), handle_response_refer(), handle_soft_key_event_message(), handle_stimulus_message(), mgcp_call(), misdn_attempt_transfer(), nbs_call(), phone_call(), pickup_do(), process_sdp(), receive_digit(), send_cause2ast(), setup_rtp_connection(), skinny_call(), skinny_unhold(), ss_thread(), and update_state().
01054 { 01055 struct ast_frame f = { AST_FRAME_CONTROL, }; 01056 01057 f.subclass = control; 01058 01059 return ast_queue_frame(chan, &f); 01060 }
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 1063 of file channel.c.
References AST_FRAME_CONTROL, ast_queue_frame(), and f.
Referenced by dahdi_handle_event(), dahdi_hangup(), iax2_queue_control_data(), process_sdp(), and skinny_hold().
01065 { 01066 struct ast_frame f = { AST_FRAME_CONTROL, }; 01067 01068 f.subclass = control; 01069 f.data = (void *) data; 01070 f.datalen = datalen; 01071 01072 return ast_queue_frame(chan, &f); 01073 }
int ast_queue_frame | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Queue one or more frames to a channel's frame queue.
chan | the channel to queue the frame(s) on | |
f | the frame(s) to queue. Note that the frame(s) will be duplicated by this function. It is the responsibility of the caller to handle freeing the memory associated with the frame(s) being passed if necessary. |
0 | success | |
non-zero | failure |
Definition at line 1030 of file channel.c.
References __ast_queue_frame().
Referenced by __ast_read(), __oh323_rtp_create(), __oh323_update_info(), agent_request(), alsa_call(), ast_channel_masquerade(), ast_channel_setwhentohangup(), ast_do_masquerade(), ast_dsp_process(), ast_queue_control(), ast_queue_control_data(), ast_queue_hangup(), ast_softhangup_nolock(), cb_events(), console_answer(), console_answer_deprecated(), console_dial(), console_dial_deprecated(), console_flash(), console_flash_deprecated(), console_sendtext(), console_sendtext_deprecated(), dahdi_queue_frame(), dictate_exec(), do_immediate_setup(), gtalk_handle_dtmf(), handle_keypad_button_message(), handle_request_info(), handle_request_invite(), handle_response_invite(), iax2_queue_frame(), local_queue_frame(), mgcp_queue_frame(), oh323_simulate_dtmf_end(), oss_call(), pri_queue_frame(), process_sdp(), queue_dtmf_readq(), receive_digit(), receive_message(), rpt_call(), and wakeup_sub().
01031 { 01032 return __ast_queue_frame(chan, fin, 0, NULL); 01033 }
int ast_queue_frame_head | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Queue one or more frames to the head of a channel's frame queue.
chan | the channel to queue the frame(s) on | |
f | the frame(s) to queue. Note that the frame(s) will be duplicated by this function. It is the responsibility of the caller to handle freeing the memory associated with the frame(s) being passed if necessary. |
0 | success | |
non-zero | failure |
Definition at line 1035 of file channel.c.
References __ast_queue_frame().
Referenced by __ast_read(), ast_autoservice_stop(), ast_safe_sleep_conditional(), and feature_request_and_dial().
01036 { 01037 return __ast_queue_frame(chan, fin, 1, NULL); 01038 }
int ast_queue_hangup | ( | struct ast_channel * | chan | ) |
Queue a hangup frame.
Definition at line 1041 of file channel.c.
References ast_channel::_softhangup, ast_channel_trylock, ast_channel_unlock, AST_CONTROL_HANGUP, AST_FRAME_CONTROL, ast_queue_frame(), AST_SOFTHANGUP_DEV, and f.
Referenced by __oh323_update_info(), __sip_autodestruct(), cleanup_connection(), console_hangup(), console_hangup_deprecated(), dahdi_handle_event(), dahdi_r2_on_call_disconnect(), gtalk_hangup_farend(), gtalk_is_answered(), handle_onhook_message(), handle_request_bye(), handle_request_cancel(), handle_response(), handle_response_invite(), handle_soft_key_event_message(), hangup_chan(), hangup_connection(), iax2_destroy(), iax2_queue_hangup(), local_fixup(), local_hangup(), mgcp_queue_hangup(), misdn_answer(), pri_hangup_all(), and retrans_pkt().
01042 { 01043 struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP }; 01044 /* Yeah, let's not change a lock-critical value without locking */ 01045 if (!ast_channel_trylock(chan)) { 01046 chan->_softhangup |= AST_SOFTHANGUP_DEV; 01047 ast_channel_unlock(chan); 01048 } 01049 return ast_queue_frame(chan, &f); 01050 }
struct ast_frame* ast_read | ( | struct ast_channel * | chan | ) |
Reads a frame.
chan | channel to read a frame from Read a frame. |
Definition at line 2717 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_recvtext(), ast_safe_sleep_conditional(), ast_tonepair(), ast_udptl_bridge(), ast_waitfordigit_full(), async_wait(), autoservice_run(), background_detect_exec(), bridge_native_loop(), bridge_p2p_loop(), channel_spy(), check_goto_on_transfer(), conf_exec(), conf_flush(), conf_run(), dahdi_bridge(), dictate_exec(), disa_exec(), do_idle_thread(), do_parking_thread(), do_waiting(), echo_exec(), feature_request_and_dial(), features_read(), find_cache(), handle_recordfile(), iax_park_thread(), ices_exec(), isAnsweringMachine(), masq_park_call(), measurenoise(), misdn_bridge(), monitor_dial(), mp3_exec(), NBScat_exec(), receive_dtmf_digits(), recordthread(), rpt(), run_agi(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), wait_for_answer(), wait_for_hangup(), wait_for_winner(), waitforring_exec(), and waitstream_core().
02718 { 02719 return __ast_read(chan, 0); 02720 }
static void ast_read_generator_actions | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 2124 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), ast_format_rate(), AST_FRAME_CNG, ast_internal_timing_enabled(), ast_log(), ast_settimeout(), f, ast_generator::generate, ast_channel::generator, generator_force(), ast_channel::generatordata, LOG_DEBUG, option_debug, ast_channel::timingfd, ast_channel::timingfunc, and ast_channel::writeformat.
Referenced by __ast_read().
02125 { 02126 if (chan->generator && chan->generator->generate && chan->generatordata && !ast_internal_timing_enabled(chan)) { 02127 void *tmp = chan->generatordata; 02128 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = chan->generator->generate; 02129 int res; 02130 int samples; 02131 02132 if (chan->timingfunc) { 02133 if (option_debug > 1) 02134 ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n"); 02135 ast_settimeout(chan, 0, NULL, NULL); 02136 } 02137 02138 chan->generatordata = NULL; /* reset, to let writes go through */ 02139 02140 if (f->subclass != chan->writeformat) { 02141 float factor; 02142 factor = ((float) ast_format_rate(chan->writeformat)) / ((float) ast_format_rate(f->subclass)); 02143 samples = (int) ( ((float) f->samples) * factor ); 02144 } else { 02145 samples = f->samples; 02146 } 02147 02148 /* This unlock is here based on two assumptions that hold true at this point in the 02149 * code. 1) this function is only called from within __ast_read() and 2) all generators 02150 * call ast_write() in their generate callback. 02151 * 02152 * The reason this is added is so that when ast_write is called, the lock that occurs 02153 * there will not recursively lock the channel. Doing this will cause intended deadlock 02154 * avoidance not to work in deeper functions 02155 */ 02156 ast_channel_unlock(chan); 02157 res = generate(chan, tmp, f->datalen, samples); 02158 ast_channel_lock(chan); 02159 chan->generatordata = tmp; 02160 if (res) { 02161 if (option_debug > 1) 02162 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 02163 ast_deactivate_generator(chan); 02164 } 02165 02166 } else if (f->frametype == AST_FRAME_CNG) { 02167 if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) { 02168 if (option_debug > 1) 02169 ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n"); 02170 ast_settimeout(chan, 160, generator_force, chan); 02171 } 02172 } 02173 }
struct ast_frame* ast_read_noaudio | ( | struct ast_channel * | chan | ) |
Reads a frame, returning AST_FRAME_NULL frame if audio. Read a frame.
chan | channel to read a frame from |
Definition at line 2722 of file channel.c.
References __ast_read().
Referenced by conf_run().
02723 { 02724 return __ast_read(chan, 1); 02725 }
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 3827 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().
03828 { 03829 return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1); 03830 }
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 3832 of file channel.c.
References ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_check_hangup(), AST_DIGIT_ANY, AST_FLAG_ZOMBIE, ast_opt_transmit_silence, ast_stopstream(), ast_test_flag, ast_waitfordigit_full(), ast_waitstream_full(), and ast_channel::stream.
Referenced by ast_app_getdata_full(), and ast_readstring().
03833 { 03834 int pos = 0; /* index in the buffer where we accumulate digits */ 03835 int to = ftimeout; 03836 03837 struct ast_silence_generator *silgen = NULL; 03838 03839 /* Stop if we're a zombie or need a soft hangup */ 03840 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 03841 return -1; 03842 if (!len) 03843 return -1; 03844 for (;;) { 03845 int d; 03846 if (c->stream) { 03847 d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd); 03848 ast_stopstream(c); 03849 if (!silgen && ast_opt_transmit_silence) 03850 silgen = ast_channel_start_silence_generator(c); 03851 usleep(1000); 03852 if (!d) 03853 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03854 } else { 03855 if (!silgen && ast_opt_transmit_silence) 03856 silgen = ast_channel_start_silence_generator(c); 03857 d = ast_waitfordigit_full(c, to, audiofd, ctrlfd); 03858 } 03859 if (d < 0) { 03860 ast_channel_stop_silence_generator(c, silgen); 03861 return -1; 03862 } 03863 if (d == 0) { 03864 s[pos]='\0'; 03865 ast_channel_stop_silence_generator(c, silgen); 03866 return 1; 03867 } 03868 if (d == 1) { 03869 s[pos]='\0'; 03870 ast_channel_stop_silence_generator(c, silgen); 03871 return 2; 03872 } 03873 if (!strchr(enders, d)) 03874 s[pos++] = d; 03875 if (strchr(enders, d) || (pos >= len)) { 03876 s[pos]='\0'; 03877 ast_channel_stop_silence_generator(c, silgen); 03878 return 0; 03879 } 03880 to = timeout; 03881 } 03882 /* Never reached */ 03883 return 0; 03884 }
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 2872 of file channel.c.
References ast_recvtext(), and free.
Referenced by handle_recvchar().
02873 { 02874 int c; 02875 char *buf = ast_recvtext(chan, timeout); 02876 if (buf == NULL) 02877 return -1; /* error or timeout */ 02878 c = *(unsigned char *)buf; 02879 free(buf); 02880 return c; 02881 }
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 2883 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().
02884 { 02885 int res, done = 0; 02886 char *buf = NULL; 02887 02888 while (!done) { 02889 struct ast_frame *f; 02890 if (ast_check_hangup(chan)) 02891 break; 02892 res = ast_waitfor(chan, timeout); 02893 if (res <= 0) /* timeout or error */ 02894 break; 02895 timeout = res; /* update timeout */ 02896 f = ast_read(chan); 02897 if (f == NULL) 02898 break; /* no frame */ 02899 if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) 02900 done = 1; /* force a break */ 02901 else if (f->frametype == AST_FRAME_TEXT) { /* what we want */ 02902 buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */ 02903 done = 1; 02904 } 02905 ast_frfree(f); 02906 } 02907 return buf; 02908 }
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 3732 of file channel.c.
References AST_CAUSE_BEARERCAPABILITY_NOTAVAIL, AST_CAUSE_NOSUCHDRIVER, AST_CAUSE_NOTDEFINED, AST_FORMAT_AUDIO_MASK, AST_FORMAT_VIDEO_MASK, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_translator_best_choice(), capabilities, ast_channel_tech::capabilities, ast_channel_tech::requester, chanlist::tech, and ast_channel_tech::type.
Referenced by __ast_request_and_dial(), agent_request(), ast_call_forward(), attempt_reconnect(), begin_dial(), build_conf(), chanavail_exec(), conf_run(), connect_link(), feature_request_and_dial(), features_alloc(), findmeexec(), ring_entry(), rpt(), rpt_call(), rpt_tele_thread(), and wait_for_answer().
03733 { 03734 struct chanlist *chan; 03735 struct ast_channel *c; 03736 int capabilities; 03737 int fmt; 03738 int res; 03739 int foo; 03740 int videoformat = format & AST_FORMAT_VIDEO_MASK; 03741 03742 if (!cause) 03743 cause = &foo; 03744 *cause = AST_CAUSE_NOTDEFINED; 03745 03746 if (AST_LIST_LOCK(&channels)) { 03747 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 03748 return NULL; 03749 } 03750 03751 AST_LIST_TRAVERSE(&backends, chan, list) { 03752 if (strcasecmp(type, chan->tech->type)) 03753 continue; 03754 03755 capabilities = chan->tech->capabilities; 03756 fmt = format & AST_FORMAT_AUDIO_MASK; 03757 res = ast_translator_best_choice(&fmt, &capabilities); 03758 if (res < 0) { 03759 ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format); 03760 *cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL; 03761 AST_LIST_UNLOCK(&channels); 03762 return NULL; 03763 } 03764 AST_LIST_UNLOCK(&channels); 03765 if (!chan->tech->requester) 03766 return NULL; 03767 03768 if (!(c = chan->tech->requester(type, capabilities | videoformat, data, cause))) 03769 return NULL; 03770 03771 /* no need to generate a Newchannel event here; it is done in the channel_alloc call */ 03772 return c; 03773 } 03774 03775 ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type); 03776 *cause = AST_CAUSE_NOSUCHDRIVER; 03777 AST_LIST_UNLOCK(&channels); 03778 03779 return NULL; 03780 }
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 3727 of file channel.c.
References __ast_request_and_dial().
Referenced by ast_pbx_outgoing_exten().
03728 { 03729 return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL); 03730 }
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 1335 of file channel.c.
References ast_safe_sleep_conditional().
Referenced by __login_exec(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_dtmf_stream(), ast_senddigit(), builtin_parkcall(), conf_run(), dictate_exec(), flash_exec(), function_ilink(), mgcp_ss(), milliwatt_exec(), moh0_exec(), moh1_exec(), old_milliwatt_exec(), park_call_exec(), pbx_builtin_answer(), pbx_builtin_wait(), play_tone_pair(), playtone(), privacy_exec(), receive_ademco_contact_id(), rpt_call(), rpt_exec(), rpt_tele_thread(), send_morse(), send_tone_telemetry(), skinny_ss(), ss_thread(), testclient_exec(), testserver_exec(), wait_for_hangup(), wait_interval(), and zapateller_exec().
01336 { 01337 return ast_safe_sleep_conditional(chan, ms, NULL, NULL); 01338 }
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 1268 of file channel.c.
References ast_channel_lock, ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_channel_unlock, ast_frfree, ast_frisolate(), ast_is_deferrable_frame(), AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_HEAD_NOLOCK, AST_LIST_INSERT_HEAD, AST_LIST_REMOVE_HEAD, ast_opt_transmit_silence, ast_queue_frame_head(), ast_read(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by __login_exec(), and ast_safe_sleep().
01269 { 01270 struct ast_frame *f; 01271 struct ast_silence_generator *silgen = NULL; 01272 int res = 0; 01273 AST_LIST_HEAD_NOLOCK(, ast_frame) deferred_frames; 01274 01275 AST_LIST_HEAD_INIT_NOLOCK(&deferred_frames); 01276 01277 /* If no other generator is present, start silencegen while waiting */ 01278 if (ast_opt_transmit_silence && !chan->generatordata) { 01279 silgen = ast_channel_start_silence_generator(chan); 01280 } 01281 01282 while (ms > 0) { 01283 struct ast_frame *dup_f = NULL; 01284 if (cond && ((*cond)(data) == 0)) { 01285 break; 01286 } 01287 ms = ast_waitfor(chan, ms); 01288 if (ms < 0) { 01289 res = -1; 01290 break; 01291 } 01292 if (ms > 0) { 01293 f = ast_read(chan); 01294 if (!f) { 01295 res = -1; 01296 break; 01297 } 01298 01299 if (!ast_is_deferrable_frame(f)) { 01300 ast_frfree(f); 01301 continue; 01302 } 01303 01304 if ((dup_f = ast_frisolate(f))) { 01305 if (dup_f != f) { 01306 ast_frfree(f); 01307 } 01308 AST_LIST_INSERT_HEAD(&deferred_frames, dup_f, frame_list); 01309 } 01310 } 01311 } 01312 01313 /* stop silgen if present */ 01314 if (silgen) { 01315 ast_channel_stop_silence_generator(chan, silgen); 01316 } 01317 01318 /* We need to free all the deferred frames, but we only need to 01319 * queue the deferred frames if there was no error and no 01320 * hangup was received 01321 */ 01322 ast_channel_lock(chan); 01323 while ((f = AST_LIST_REMOVE_HEAD(&deferred_frames, frame_list))) { 01324 if (!res) { 01325 ast_queue_frame_head(chan, f); 01326 } 01327 ast_frfree(f); 01328 } 01329 ast_channel_unlock(chan); 01330 01331 return res; 01332 }
char* ast_safe_string_alloc | ( | const char * | fmt, | |
... | ||||
) |
printf the string into a correctly sized mallocd buffer, and return the buffer
return a mallocd string with the result of sprintf of the fmt and following args
Definition at line 409 of file channel.c.
References ast_malloc, and len().
Referenced by dahdi_new(), and features_new().
00410 { 00411 char *b2, buf[1]; 00412 int len; 00413 va_list args; 00414 00415 va_start(args, fmt); 00416 len = vsnprintf(buf, 1, fmt, args); 00417 va_end(args); 00418 00419 if (!(b2 = ast_malloc(len + 1))) 00420 return NULL; 00421 00422 va_start(args, fmt); 00423 vsnprintf(b2, len + 1, fmt, args); 00424 va_end(args); 00425 00426 return b2; 00427 }
int ast_say_character_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5579 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().
05581 { 05582 return ast_say_character_str_full(chan, str, ints, lang, -1, -1); 05583 }
int ast_say_digit_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5573 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().
05575 { 05576 return ast_say_digit_str_full(chan, str, ints, lang, -1, -1); 05577 }
int ast_say_digits | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5567 of file channel.c.
References ast_say_digits_full().
Referenced by common_exec(), conf_exec(), park_call_full(), parkandannounce_exec(), and rpt_tele_thread().
05569 { 05570 return ast_say_digits_full(chan, num, ints, lang, -1, -1); 05571 }
int ast_say_digits_full | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | lang, | |||
int | audiofd, | |||
int | ctrlfd | |||
) |
Definition at line 5591 of file channel.c.
References ast_say_digit_str_full.
Referenced by __say_init(), ast_say_digits(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_number_full_cs(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_en(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_he(), ast_say_number_full_it(), ast_say_number_full_ka(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), and ast_say_number_full_zh().
05593 { 05594 char buf[256]; 05595 05596 snprintf(buf, sizeof(buf), "%d", num); 05597 return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd); 05598 }
int ast_say_enumeration | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5561 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().
05563 { 05564 return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1); 05565 }
int ast_say_number | ( | struct ast_channel * | chan, | |
int | num, | |||
const char * | ints, | |||
const char * | language, | |||
const char * | options | |||
) |
Definition at line 5555 of file channel.c.
References ast_say_number_full.
Referenced by ast_say_date_da(), ast_say_date_de(), ast_say_date_en(), ast_say_date_es(), ast_say_date_fr(), ast_say_date_gr(), ast_say_date_he(), ast_say_date_ka(), ast_say_date_nl(), ast_say_date_pt(), ast_say_date_with_format_da(), ast_say_date_with_format_de(), ast_say_date_with_format_en(), ast_say_date_with_format_es(), ast_say_date_with_format_fr(), ast_say_date_with_format_it(), ast_say_date_with_format_nl(), ast_say_date_with_format_pl(), ast_say_date_with_format_pt(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_he(), ast_say_datetime_from_now_ka(), ast_say_datetime_from_now_pt(), ast_say_datetime_he(), ast_say_datetime_pt(), ast_say_datetime_zh(), ast_say_time_de(), ast_say_time_en(), ast_say_time_es(), ast_say_time_fr(), ast_say_time_gr(), ast_say_time_ka(), ast_say_time_nl(), ast_say_time_pt(), ast_say_time_pt_BR(), ast_say_time_zh(), bridge_playfile(), conf_exec(), conf_run(), count_exec(), dictate_exec(), get_folder(), gr_say_number_female(), pbx_builtin_saynumber(), play_message(), play_message_duration(), rpt_tele_thread(), say_and_wait(), say_position(), saynum(), vm_intro_gr(), vm_intro_he(), vm_intro_multilang(), vm_intro_pt(), and vm_intro_pt_BR().
05557 { 05558 return ast_say_number_full(chan, num, ints, language, options, -1, -1); 05559 }
int ast_say_phonetic_str | ( | struct ast_channel * | chan, | |
const char * | str, | |||
const char * | ints, | |||
const char * | lang | |||
) |
Definition at line 5585 of file channel.c.
References ast_say_phonetic_str_full.
Referenced by pbx_builtin_sayphonetic().
05587 { 05588 return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1); 05589 }
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 2987 of file channel.c.
References AST_DEFAULT_EMULATE_DTMF_DURATION, ast_safe_sleep(), ast_senddigit_begin(), ast_senddigit_end(), ast_channel_tech::send_digit_begin, and ast_channel::tech.
Referenced by ast_dtmf_stream(), do_dtmf_phone(), manager_play_dtmf(), and rpt_call().
02988 { 02989 if (chan->tech->send_digit_begin) { 02990 ast_senddigit_begin(chan, digit); 02991 ast_safe_sleep(chan, AST_DEFAULT_EMULATE_DTMF_DURATION); 02992 } 02993 02994 return ast_senddigit_end(chan, digit, AST_DEFAULT_EMULATE_DTMF_DURATION); 02995 }
int ast_senddigit_begin | ( | struct ast_channel * | chan, | |
char | digit | |||
) |
Definition at line 2928 of file channel.c.
References ast_log(), ast_playtones_start(), LOG_DEBUG, ast_channel::name, option_debug, ast_channel_tech::send_digit_begin, and ast_channel::tech.
Referenced by agent_digit_begin(), ast_senddigit(), ast_write(), and features_digit_begin().
02929 { 02930 /* Device does not support DTMF tones, lets fake 02931 * it by doing our own generation. */ 02932 static const char* dtmf_tones[] = { 02933 "941+1336", /* 0 */ 02934 "697+1209", /* 1 */ 02935 "697+1336", /* 2 */ 02936 "697+1477", /* 3 */ 02937 "770+1209", /* 4 */ 02938 "770+1336", /* 5 */ 02939 "770+1477", /* 6 */ 02940 "852+1209", /* 7 */ 02941 "852+1336", /* 8 */ 02942 "852+1477", /* 9 */ 02943 "697+1633", /* A */ 02944 "770+1633", /* B */ 02945 "852+1633", /* C */ 02946 "941+1633", /* D */ 02947 "941+1209", /* * */ 02948 "941+1477" /* # */ 02949 }; 02950 02951 if (!chan->tech->send_digit_begin) 02952 return 0; 02953 02954 if (!chan->tech->send_digit_begin(chan, digit)) 02955 return 0; 02956 02957 if (digit >= '0' && digit <='9') 02958 ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0); 02959 else if (digit >= 'A' && digit <= 'D') 02960 ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0); 02961 else if (digit == '*') 02962 ast_playtones_start(chan, 0, dtmf_tones[14], 0); 02963 else if (digit == '#') 02964 ast_playtones_start(chan, 0, dtmf_tones[15], 0); 02965 else { 02966 /* not handled */ 02967 if (option_debug) 02968 ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name); 02969 } 02970 02971 return 0; 02972 }
int ast_senddigit_end | ( | struct ast_channel * | chan, | |
char | digit, | |||
unsigned int | duration | |||
) |
Definition at line 2974 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().
02975 { 02976 int res = -1; 02977 02978 if (chan->tech->send_digit_end) 02979 res = chan->tech->send_digit_end(chan, digit, duration); 02980 02981 if (res && chan->generator) 02982 ast_playtones_stop(chan); 02983 02984 return 0; 02985 }
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 2910 of file channel.c.
References ast_channel_lock, ast_channel_unlock, 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().
02911 { 02912 int res = 0; 02913 02914 ast_channel_lock(chan); 02915 /* Stop if we're a zombie or need a soft hangup */ 02916 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) { 02917 ast_channel_unlock(chan); 02918 return -1; 02919 } 02920 CHECK_BLOCKING(chan); 02921 if (chan->tech->send_text) 02922 res = chan->tech->send_text(chan, text); 02923 ast_clear_flag(chan, AST_FLAG_BLOCKING); 02924 ast_channel_unlock(chan); 02925 return res; 02926 }
void ast_set_callerid | ( | struct ast_channel * | chan, | |
const char * | cidnum, | |||
const char * | cidname, | |||
const char * | ani | |||
) |
Definition at line 4451 of file channel.c.
References ast_cdr_setcid(), ast_channel_lock, ast_channel_unlock, ast_strdup, ast_channel::cdr, ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_name, ast_callerid::cid_num, free, and report_new_callerid().
Referenced by __ast_request_and_dial(), agent_call(), ast_call_forward(), callerid_write(), dahdi_read(), disa_exec(), feature_request_and_dial(), findmeexec(), handle_setcallerid(), lookupcidname_exec(), mgcp_ss(), privacy_exec(), read_config(), setcallerid_exec(), skinny_newcall(), ss_thread(), and wait_for_answer().
04452 { 04453 ast_channel_lock(chan); 04454 04455 if (callerid) { 04456 if (chan->cid.cid_num) 04457 free(chan->cid.cid_num); 04458 chan->cid.cid_num = ast_strdup(callerid); 04459 } 04460 if (calleridname) { 04461 if (chan->cid.cid_name) 04462 free(chan->cid.cid_name); 04463 chan->cid.cid_name = ast_strdup(calleridname); 04464 } 04465 if (ani) { 04466 if (chan->cid.cid_ani) 04467 free(chan->cid.cid_ani); 04468 chan->cid.cid_ani = ast_strdup(ani); 04469 } 04470 if (chan->cdr) { 04471 ast_cdr_setcid(chan->cdr, chan); 04472 } 04473 04474 report_new_callerid(chan); 04475 04476 ast_channel_unlock(chan); 04477 }
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 3467 of file channel.c.
References ast_channel::rawreadformat, ast_channel::readformat, ast_channel::readtrans, and set_format().
Referenced by __ast_play_and_record(), __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_do_masquerade(), attempt_reconnect(), background_detect_exec(), build_conf(), conf_run(), connect_link(), dictate_exec(), disa_exec(), do_waiting(), eagi_exec(), echo_exec(), gtalk_rtp_read(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mgcp_rtp_read(), oh323_rtp_read(), old_milliwatt_exec(), process_sdp(), rpt(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), speech_background(), and update_features().
03468 { 03469 return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat, 03470 &chan->readtrans, 0); 03471 }
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 5328 of file channel.c.
References ast_variable::name, ast_variable::next, pbx_builtin_setvar_helper(), and ast_variable::value.
Referenced by __ast_request_and_dial(), ast_call_forward(), ast_pbx_outgoing_app(), and ast_pbx_outgoing_exten().
05329 { 05330 struct ast_variable *cur; 05331 05332 for (cur = vars; cur; cur = cur->next) 05333 pbx_builtin_setvar_helper(chan, cur->name, cur->value); 05334 }
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 3473 of file channel.c.
References ast_channel::rawwriteformat, set_format(), ast_channel::writeformat, and ast_channel::writetrans.
Referenced by __login_exec(), __oh323_update_info(), agent_call(), alarmreceiver_exec(), ast_adsi_transmit_message_full(), ast_channel_make_compatible(), ast_channel_start_silence_generator(), ast_channel_stop_silence_generator(), ast_do_masquerade(), ast_openstream_full(), ast_stopstream(), attempt_reconnect(), build_conf(), chanspy_exec(), conf_run(), connect_link(), disa_exec(), echo_exec(), extenspy_exec(), gtalk_rtp_read(), linear_alloc(), linear_release(), mgcp_rtp_read(), moh_alloc(), moh_files_release(), moh_release(), mp3_exec(), NBScat_exec(), oh323_rtp_read(), old_milliwatt_exec(), playtones_alloc(), playtones_release(), process_sdp(), rpt(), send_waveform_to_channel(), setup_rtp_connection(), sip_rtp_read(), skinny_rtp_read(), socket_process(), tonepair_alloc(), tonepair_release(), and update_features().
03474 { 03475 return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat, 03476 &chan->writetrans, 1); 03477 }
int ast_setstate | ( | struct ast_channel * | chan, | |
enum ast_channel_state | state | |||
) |
Change the state of a channel.
Definition at line 4479 of file channel.c.
References ast_channel::_state, AST_CHANNEL_NAME, ast_copy_string(), ast_device_state_changed_literal(), ast_state2str(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, manager_event(), name, ast_channel::name, S_OR, and ast_channel::uniqueid.
Referenced by __ast_read(), __dahdi_exception(), __oh323_update_info(), agent_call(), alsa_answer(), ast_answer(), cb_events(), check_availability(), dahdi_answer(), dahdi_call(), dahdi_handle_event(), dahdi_indicate(), dahdi_read(), gtalk_call(), gtalk_newcall(), handle_invite_replaces(), handle_offhook_message(), handle_request_invite(), handle_response_invite(), handle_soft_key_event_message(), handle_stimulus_message(), iax2_call(), local_queue_frame(), mgcp_answer(), mgcp_call(), mgcp_ss(), misdn_call(), misdn_indication(), nbs_call(), nbs_hangup(), oh323_answer(), oss_answer(), pbx_builtin_busy(), pbx_builtin_congestion(), phone_answer(), phone_call(), phone_exception(), phone_hangup(), phone_write(), release_chan(), release_chan_early(), sip_answer(), skinny_answer(), skinny_call(), skinny_newcall(), ss_thread(), and update_state().
04480 { 04481 char name[AST_CHANNEL_NAME], *dashptr; 04482 int oldstate = chan->_state; 04483 04484 if (oldstate == state) 04485 return 0; 04486 04487 ast_copy_string(name, chan->name, sizeof(name)); 04488 if ((dashptr = strrchr(name, '-'))) { 04489 *dashptr = '\0'; 04490 } 04491 04492 chan->_state = state; 04493 ast_device_state_changed_literal(name); 04494 /* setstate used to conditionally report Newchannel; this is no more */ 04495 manager_event(EVENT_FLAG_CALL, 04496 "Newstate", 04497 "Channel: %s\r\n" 04498 "State: %s\r\n" 04499 "CallerID: %s\r\n" 04500 "CallerIDName: %s\r\n" 04501 "Uniqueid: %s\r\n", 04502 chan->name, ast_state2str(chan->_state), 04503 S_OR(chan->cid.cid_num, "<unknown>"), 04504 S_OR(chan->cid.cid_name, "<unknown>"), 04505 chan->uniqueid); 04506 04507 return 0; 04508 }
int ast_settimeout | ( | struct ast_channel * | c, | |
int | samples, | |||
int(*)(const void *data) | func, | |||
void * | data | |||
) |
Definition at line 2026 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_log(), LOG_DEBUG, option_debug, ast_channel::timingdata, ast_channel::timingfd, and ast_channel::timingfunc.
Referenced by ast_activate_generator(), ast_closestream(), ast_deactivate_generator(), ast_read_generator_actions(), ast_readaudio_callback(), and filestream_destructor().
02027 { 02028 int res = -1; 02029 #ifdef HAVE_DAHDI 02030 ast_channel_lock(c); 02031 if (c->timingfd > -1) { 02032 if (!func) { 02033 samples = 0; 02034 data = 0; 02035 } 02036 if (option_debug) 02037 ast_log(LOG_DEBUG, "Scheduling timer at %d sample intervals\n", samples); 02038 res = ioctl(c->timingfd, DAHDI_TIMERCONFIG, &samples); 02039 c->timingfunc = func; 02040 c->timingdata = data; 02041 } 02042 ast_channel_unlock(c); 02043 #endif 02044 return res; 02045 }
int ast_shutting_down | ( | void | ) |
Returns non-zero if Asterisk is being shut down.
Returns non-zero if Asterisk is being shut down
Definition at line 461 of file channel.c.
Referenced by handle_request_options().
00462 { 00463 return shutting_down; 00464 }
int ast_softhangup | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel.
chan | channel to be soft-hung-up Call the protocol layer, but don't destroy the channel structure (use this if you are trying to safely hangup a channel managed by another thread. | |
reason | an AST_SOFTHANGUP_* reason code |
Definition at line 1613 of file channel.c.
References ast_channel_lock, ast_channel_unlock, and ast_softhangup_nolock().
Referenced by __ast_module_user_hangup_all(), __login_exec(), __unload_module(), action_hangup(), agent_hangup(), agent_logoff(), agent_read(), ast_begin_shutdown(), ast_dial_join(), conf_free(), connect_link(), dahdi_handle_event(), function_ilink(), handle_hangup(), handle_link_data(), handle_softhangup(), manager_park(), read_agent_config(), rpt(), rpt_call(), rpt_do_restart(), sla_handle_hold_event(), softhangup_exec(), start_spying(), startmon(), and unload_module().
01614 { 01615 int res; 01616 ast_channel_lock(chan); 01617 res = ast_softhangup_nolock(chan, cause); 01618 ast_channel_unlock(chan); 01619 return res; 01620 }
int ast_softhangup_nolock | ( | struct ast_channel * | chan, | |
int | cause | |||
) |
Softly hangup up a channel (no channel lock).
chan | channel to be soft-hung-up | |
reason | an AST_SOFTHANGUP_* reason code |
Definition at line 1599 of file channel.c.
References ast_channel::_softhangup, AST_FLAG_BLOCKING, ast_log(), ast_null_frame, ast_queue_frame(), ast_test_flag, ast_channel::blocker, LOG_DEBUG, ast_channel::name, and option_debug.
Referenced by ast_async_goto(), ast_softhangup(), attempt_transfer(), check_pendings(), dahdi_softhangup_all(), do_monitor(), oh323_indicate(), sip_indicate(), and skinny_indicate().
01600 { 01601 if (option_debug) 01602 ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name); 01603 /* Inform channel driver that we need to be hung up, if it cares */ 01604 chan->_softhangup |= cause; 01605 ast_queue_frame(chan, &ast_null_frame); 01606 /* Interrupt any poll call or such */ 01607 if (ast_test_flag(chan, AST_FLAG_BLOCKING)) 01608 pthread_kill(chan->blocker, SIGURG); 01609 return 0; 01610 }
char* ast_state2str | ( | enum | ast_channel_state | ) |
Gives the string form of a given channel state.
ast_channel_state | state to get the name of Give a name to a state Returns the text form of the binary state given |
Definition at line 600 of file channel.c.
References AST_STATE_BUSY, AST_STATE_DIALING, AST_STATE_DIALING_OFFHOOK, AST_STATE_DOWN, AST_STATE_OFFHOOK, AST_STATE_PRERING, AST_STATE_RESERVED, AST_STATE_RING, AST_STATE_RINGING, AST_STATE_UP, ast_threadstorage_get(), STATE2STR_BUFSIZE, and state2str_threadbuf.
Referenced by action_status(), agent_hangup(), ast_setstate(), attempt_transfer(), func_channel_read(), handle_chanlist(), handle_chanlist_deprecated(), handle_invite_replaces(), handle_showchan(), handle_showchan_deprecated(), local_attended_transfer(), mgcp_new(), serialize_showchan(), and sip_hangup().
00601 { 00602 char *buf; 00603 00604 switch(state) { 00605 case AST_STATE_DOWN: 00606 return "Down"; 00607 case AST_STATE_RESERVED: 00608 return "Rsrvd"; 00609 case AST_STATE_OFFHOOK: 00610 return "OffHook"; 00611 case AST_STATE_DIALING: 00612 return "Dialing"; 00613 case AST_STATE_RING: 00614 return "Ring"; 00615 case AST_STATE_RINGING: 00616 return "Ringing"; 00617 case AST_STATE_UP: 00618 return "Up"; 00619 case AST_STATE_BUSY: 00620 return "Busy"; 00621 case AST_STATE_DIALING_OFFHOOK: 00622 return "Dialing Offhook"; 00623 case AST_STATE_PRERING: 00624 return "Pre-ring"; 00625 default: 00626 if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE))) 00627 return "Unknown"; 00628 snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state); 00629 return buf; 00630 } 00631 }
int ast_str2cause | ( | const char * | name | ) |
Convert a symbolic hangup cause to number.
name | string form of the cause Returns the cause code |
Definition at line 588 of file channel.c.
References causes.
Referenced by pbx_builtin_hangup().
00589 { 00590 int x; 00591 00592 for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++) 00593 if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0) 00594 return causes[x].cause; 00595 00596 return -1; 00597 }
int ast_tonepair | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Play a tone pair for a given amount of time
Definition at line 5183 of file channel.c.
References ast_frfree, ast_read(), ast_tonepair_start(), ast_waitfor(), f, and ast_channel::generatordata.
Referenced by zapateller_exec().
05184 { 05185 int res; 05186 05187 if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol))) 05188 return res; 05189 05190 /* Give us some wiggle room */ 05191 while (chan->generatordata && ast_waitfor(chan, 100) >= 0) { 05192 struct ast_frame *f = ast_read(chan); 05193 if (f) 05194 ast_frfree(f); 05195 else 05196 return -1; 05197 } 05198 return 0; 05199 }
int ast_tonepair_start | ( | struct ast_channel * | chan, | |
int | freq1, | |||
int | freq2, | |||
int | duration, | |||
int | vol | |||
) |
Start a tone going
Definition at line 5165 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().
05166 { 05167 struct tonepair_def d = { 0, }; 05168 05169 d.freq1 = freq1; 05170 d.freq2 = freq2; 05171 d.duration = duration; 05172 d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */ 05173 if (ast_activate_generator(chan, &tonepair, &d)) 05174 return -1; 05175 return 0; 05176 }
void ast_tonepair_stop | ( | struct ast_channel * | chan | ) |
Stop a tone from playing
Definition at line 5178 of file channel.c.
References ast_deactivate_generator().
Referenced by sendnoise().
05179 { 05180 ast_deactivate_generator(chan); 05181 }
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 3809 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().
03810 { 03811 int res = -1; 03812 03813 /* Stop if we're a zombie or need a soft hangup */ 03814 ast_channel_lock(chan); 03815 if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) { 03816 if (chan->tech->transfer) { 03817 res = chan->tech->transfer(chan, dest); 03818 if (!res) 03819 res = 1; 03820 } else 03821 res = 0; 03822 } 03823 ast_channel_unlock(chan); 03824 return res; 03825 }
char* ast_transfercapability2str | ( | int | transfercapability | ) | const |
Gives the string form of a given transfer capability.
transfercapability | transfercapabilty to get the name of Give a name to a transfercapbility See above Returns the text form of the binary transfer capbility |
Definition at line 634 of file channel.c.
References AST_TRANS_CAP_3_1K_AUDIO, AST_TRANS_CAP_DIGITAL, AST_TRANS_CAP_DIGITAL_W_TONES, AST_TRANS_CAP_RESTRICTED_DIGITAL, AST_TRANS_CAP_SPEECH, and AST_TRANS_CAP_VIDEO.
Referenced by cb_events(), dahdi_call(), dahdi_new(), misdn_call(), and oh323_call().
00635 { 00636 switch(transfercapability) { 00637 case AST_TRANS_CAP_SPEECH: 00638 return "SPEECH"; 00639 case AST_TRANS_CAP_DIGITAL: 00640 return "DIGITAL"; 00641 case AST_TRANS_CAP_RESTRICTED_DIGITAL: 00642 return "RESTRICTED_DIGITAL"; 00643 case AST_TRANS_CAP_3_1K_AUDIO: 00644 return "3K1AUDIO"; 00645 case AST_TRANS_CAP_DIGITAL_W_TONES: 00646 return "DIGITAL_W_TONES"; 00647 case AST_TRANS_CAP_VIDEO: 00648 return "VIDEO"; 00649 default: 00650 return "UNKNOWN"; 00651 } 00652 }
void ast_uninstall_music_functions | ( | void | ) |
Definition at line 5246 of file channel.c.
References ast_moh_cleanup_ptr, ast_moh_start_ptr, and ast_moh_stop_ptr.
Referenced by unload_module().
05247 { 05248 ast_moh_start_ptr = NULL; 05249 ast_moh_stop_ptr = NULL; 05250 ast_moh_cleanup_ptr = NULL; 05251 }
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 2010 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_idle_thread(), do_waiting(), echo_exec(), handle_recordfile(), ices_exec(), isAnsweringMachine(), measurenoise(), mp3_exec(), NBScat_exec(), receive_dtmf_digits(), recordthread(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), speech_background(), ss_thread(), wait_for_hangup(), waitforring_exec(), and waitstream_core().
02011 { 02012 int oldms = ms; /* -1 if no timeout */ 02013 02014 ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms); 02015 if ((ms < 0) && (oldms < 0)) 02016 ms = 0; 02017 return ms; 02018 }
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 2005 of file channel.c.
References ast_waitfor_nandfds().
Referenced by ast_udptl_bridge(), autoservice_run(), bridge_native_loop(), dahdi_bridge(), feature_request_and_dial(), misdn_bridge(), monitor_dial(), rpt(), wait_for_answer(), and wait_for_winner().
02006 { 02007 return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms); 02008 }
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_poll, ast_set_flag, AST_SOFTHANGUP_TIMEOUT, ast_tvdiff_ms(), ast_tvnow(), CHECK_BLOCKING, errno, and ast_channel::whentohangup.
Referenced by app_exec(), ast_waitfor(), ast_waitfor_n(), ast_waitfor_n_fd(), ast_waitfordigit_full(), conf_run(), find_cache(), run_agi(), and waitstream_core().
01855 { 01856 struct timeval start = { 0 , 0 }; 01857 struct pollfd *pfds = NULL; 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 = NULL; 01869 01870 if ((sz = n * AST_MAX_FDS + nfds)) { 01871 pfds = alloca(sizeof(*pfds) * sz); 01872 fdmap = alloca(sizeof(*fdmap) * sz); 01873 } 01874 01875 if (outfd) 01876 *outfd = -99999; 01877 if (exception) 01878 *exception = 0; 01879 01880 /* Perform any pending masquerades */ 01881 for (x=0; x < n; x++) { 01882 ast_channel_lock(c[x]); 01883 if (c[x]->masq) { 01884 if (ast_do_masquerade(c[x])) { 01885 ast_log(LOG_WARNING, "Masquerade failed\n"); 01886 *ms = -1; 01887 ast_channel_unlock(c[x]); 01888 return NULL; 01889 } 01890 } 01891 if (c[x]->whentohangup) { 01892 if (!whentohangup) 01893 time(&now); 01894 diff = c[x]->whentohangup - now; 01895 if (diff < 1) { 01896 /* Should already be hungup */ 01897 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01898 ast_channel_unlock(c[x]); 01899 return c[x]; 01900 } 01901 if (!whentohangup || (diff < whentohangup)) 01902 whentohangup = diff; 01903 } 01904 ast_channel_unlock(c[x]); 01905 } 01906 /* Wait full interval */ 01907 rms = *ms; 01908 /* INT_MAX, not LONG_MAX, because it matters on 64-bit */ 01909 if (whentohangup && whentohangup < INT_MAX / 1000) { /* Protect against overflow */ 01910 rms = whentohangup * 1000; /* timeout in milliseconds */ 01911 if (*ms >= 0 && *ms < rms) /* original *ms still smaller */ 01912 rms = *ms; 01913 } else if (whentohangup && rms < 0) { 01914 /* Tiny corner case... call would need to last >24 days */ 01915 rms = INT_MAX; 01916 } 01917 /* 01918 * Build the pollfd array, putting the channels' fds first, 01919 * followed by individual fds. Order is important because 01920 * individual fd's must have priority over channel fds. 01921 */ 01922 max = 0; 01923 for (x=0; x<n; x++) { 01924 for (y=0; y<AST_MAX_FDS; y++) { 01925 fdmap[max].fdno = y; /* fd y is linked to this pfds */ 01926 fdmap[max].chan = x; /* channel x is linked to this pfds */ 01927 max += ast_add_fd(&pfds[max], c[x]->fds[y]); 01928 } 01929 CHECK_BLOCKING(c[x]); 01930 } 01931 /* Add the individual fds */ 01932 for (x=0; x<nfds; x++) { 01933 fdmap[max].chan = -1; 01934 max += ast_add_fd(&pfds[max], fds[x]); 01935 } 01936 01937 if (*ms > 0) 01938 start = ast_tvnow(); 01939 01940 if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */ 01941 do { 01942 int kbrms = rms; 01943 if (kbrms > 600000) 01944 kbrms = 600000; 01945 res = ast_poll(pfds, max, kbrms); 01946 if (!res) 01947 rms -= kbrms; 01948 } while (!res && (rms > 0)); 01949 } else { 01950 res = ast_poll(pfds, max, rms); 01951 } 01952 for (x=0; x<n; x++) 01953 ast_clear_flag(c[x], AST_FLAG_BLOCKING); 01954 if (res < 0) { /* Simulate a timeout if we were interrupted */ 01955 if (errno != EINTR) 01956 *ms = -1; 01957 return NULL; 01958 } 01959 if (whentohangup) { /* if we have a timeout, check who expired */ 01960 time(&now); 01961 for (x=0; x<n; x++) { 01962 if (c[x]->whentohangup && now >= c[x]->whentohangup) { 01963 c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT; 01964 if (winner == NULL) 01965 winner = c[x]; 01966 } 01967 } 01968 } 01969 if (res == 0) { /* no fd ready, reset timeout and done */ 01970 *ms = 0; /* XXX use 0 since we may not have an exact timeout. */ 01971 return winner; 01972 } 01973 /* 01974 * Then check if any channel or fd has a pending event. 01975 * Remember to check channels first and fds last, as they 01976 * must have priority on setting 'winner' 01977 */ 01978 for (x = 0; x < max; x++) { 01979 res = pfds[x].revents; 01980 if (res == 0) 01981 continue; 01982 if (fdmap[x].chan >= 0) { /* this is a channel */ 01983 winner = c[fdmap[x].chan]; /* override previous winners */ 01984 if (res & POLLPRI) 01985 ast_set_flag(winner, AST_FLAG_EXCEPTION); 01986 else 01987 ast_clear_flag(winner, AST_FLAG_EXCEPTION); 01988 winner->fdno = fdmap[x].fdno; 01989 } else { /* this is an fd */ 01990 if (outfd) 01991 *outfd = pfds[x].fd; 01992 if (exception) 01993 *exception = (res & POLLPRI) ? -1 : 0; 01994 winner = NULL; 01995 } 01996 } 01997 if (*ms > 0) { 01998 *ms -= ast_tvdiff_ms(ast_tvnow(), start); 01999 if (*ms < 0) 02000 *ms = 0; 02001 } 02002 return winner; 02003 }
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 2021 of file channel.c.
References ast_waitfordigit_full().
Referenced by _while_exec(), advanced_options(), ast_adsi_get_cpeid(), ast_adsi_get_cpeinfo(), ast_adsi_print(), ast_adsi_read_encoded_dtmf(), ast_adsi_transmit_message_full(), ast_app_dtget(), ast_control_streamfile(), ast_record_review(), builtin_atxfer(), collect_digits(), common_exec(), cpeid_exec(), dialout(), directory_exec(), forward_message(), get_folder(), ivr_dispatch(), mgcp_ss(), my_getsigstr(), pbx_builtin_waitexten(), play_mailbox_owner(), play_record_review(), read_exec(), read_newoption(), retrydial_exec(), sendnoise(), ss_thread(), testclient_exec(), testserver_exec(), vm_execmain(), vm_forwardoptions(), vm_instructions(), vm_options(), vm_tempgreeting(), wait_a_bit(), and wait_our_turn().
02022 { 02023 return ast_waitfordigit_full(c, ms, -1, -1); 02024 }
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 2047 of file channel.c.
References ast_check_hangup(), ast_clear_flag, AST_CONTROL_ANSWER, AST_CONTROL_HANGUP, AST_CONTROL_RINGING, AST_CONTROL_SRCCHANGE, AST_CONTROL_SRCUPDATE, AST_FLAG_END_DTMF_ONLY, AST_FLAG_ZOMBIE, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_VOICE, ast_frfree, ast_log(), ast_read(), ast_set_flag, ast_test_flag, ast_waitfor_nandfds(), errno, and f.
Referenced by ast_readstring_full(), ast_waitfordigit(), handle_getoption(), and handle_waitfordigit().
02048 { 02049 /* Stop if we're a zombie or need a soft hangup */ 02050 if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c)) 02051 return -1; 02052 02053 /* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */ 02054 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY); 02055 02056 /* Wait for a digit, no more than ms milliseconds total. */ 02057 while (ms) { 02058 struct ast_channel *rchan; 02059 int outfd; 02060 02061 errno = 0; 02062 rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms); 02063 if (!rchan && outfd < 0 && ms) { 02064 if (errno == 0 || errno == EINTR) 02065 continue; 02066 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno)); 02067 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02068 return -1; 02069 } else if (outfd > -1) { 02070 /* The FD we were watching has something waiting */ 02071 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02072 return 1; 02073 } else if (rchan) { 02074 int res; 02075 struct ast_frame *f = ast_read(c); 02076 if (!f) 02077 return -1; 02078 02079 switch(f->frametype) { 02080 case AST_FRAME_DTMF_BEGIN: 02081 break; 02082 case AST_FRAME_DTMF_END: 02083 res = f->subclass; 02084 ast_frfree(f); 02085 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02086 return res; 02087 case AST_FRAME_CONTROL: 02088 switch(f->subclass) { 02089 case AST_CONTROL_HANGUP: 02090 ast_frfree(f); 02091 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02092 return -1; 02093 case AST_CONTROL_RINGING: 02094 case AST_CONTROL_ANSWER: 02095 case AST_CONTROL_SRCUPDATE: 02096 case AST_CONTROL_SRCCHANGE: 02097 /* Unimportant */ 02098 break; 02099 default: 02100 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass); 02101 break; 02102 } 02103 break; 02104 case AST_FRAME_VOICE: 02105 /* Write audio if appropriate */ 02106 if (audiofd > -1) { 02107 if (write(audiofd, f->data, f->datalen) < 0) { 02108 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); 02109 } 02110 } 02111 default: 02112 /* Ignore */ 02113 break; 02114 } 02115 ast_frfree(f); 02116 } 02117 } 02118 02119 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY); 02120 02121 return 0; /* Time is up */ 02122 }
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 1235 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01237 { 01238 return channel_find_locked(chan, NULL, 0, context, exten); 01239 }
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 1222 of file channel.c.
References channel_find_locked().
Referenced by next_channel().
01224 { 01225 return channel_find_locked(chan, name, namelen, NULL, NULL); 01226 }
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 3130 of file channel.c.
References ast_channel::_softhangup, apply_plc(), ast_audiohook_detach_list(), AST_AUDIOHOOK_DIRECTION_WRITE, ast_audiohook_write_list(), ast_audiohook_write_list_empty(), ast_channel_lock, ast_channel_trylock, ast_channel_unlock, ast_check_hangup(), ast_clear_flag, AST_CONTROL_UNHOLD, ast_deactivate_generator(), ast_do_masquerade(), AST_FLAG_BLOCKING, AST_FLAG_WRITE_INT, AST_FLAG_ZOMBIE, AST_FORMAT_SLINEAR, AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_frame_dump(), AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_MODEM, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, ast_frisolate(), AST_LIST_NEXT, ast_log(), AST_MONITOR_RUNNING, ast_opt_generic_plc, ast_seekstream(), ast_senddigit_begin(), ast_senddigit_end(), AST_SOFTHANGUP_DEV, ast_test_flag, ast_translate(), ast_writestream(), ast_channel::audiohooks, CHECK_BLOCKING, ast_frame::data, ast_frame::datalen, DEBUGCHAN_FLAG, f, ast_channel::fout, FRAMECOUNT_INC, ast_frame::frametype, ast_channel::generatordata, ast_channel_tech::indicate, ast_channel::insmpl, ast_frame::len, LOG_DEBUG, ast_channel::masq, ast_channel::masqr, ast_channel::monitor, MONITOR_CONSTANT_DELAY, MONITOR_DELAY, ast_channel::name, ast_frame::next, option_debug, ast_channel::outsmpl, ast_channel::rawwriteformat, ast_frame::samples, SEEK_FORCECUR, ast_channel_tech::send_html, ast_channel_tech::send_text, ast_frame::src, ast_channel_monitor::state, ast_frame::subclass, ast_channel::tech, ast_channel_tech::write, ast_channel_monitor::write_stream, ast_channel_tech::write_video, and ast_channel::writetrans.
Referenced by adsi_careful_send(), agent_write(), ast_bridge_call(), ast_prod(), ast_readaudio_callback(), ast_readvideo_callback(), ast_udptl_bridge(), ast_write_video(), bridge_native_loop(), conf_queue_dtmf(), conf_run(), dahdi_bridge(), dictate_exec(), echo_exec(), feature_request_and_dial(), features_write(), function_ilink(), gen_generate(), handle_link_data(), jb_get_and_deliver(), linear_generator(), milliwatt_generate(), misdn_bridge(), moh_files_generator(), moh_generate(), mp3_exec(), NBScat_exec(), rpt(), send_link_dtmf(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), spy_generate(), and wait_for_answer().
03131 { 03132 int res = -1; 03133 int count = 0; 03134 struct ast_frame *f = NULL; 03135 03136 /*Deadlock avoidance*/ 03137 while(ast_channel_trylock(chan)) { 03138 /*cannot goto done since the channel is not locked*/ 03139 if(count++ > 10) { 03140 if(option_debug) 03141 ast_log(LOG_DEBUG, "Deadlock avoided for write to channel '%s'\n", chan->name); 03142 return 0; 03143 } 03144 usleep(1); 03145 } 03146 /* Stop if we're a zombie or need a soft hangup */ 03147 if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) 03148 goto done; 03149 03150 /* Handle any pending masquerades */ 03151 if (chan->masq && ast_do_masquerade(chan)) { 03152 ast_log(LOG_WARNING, "Failed to perform masquerade\n"); 03153 goto done; 03154 } 03155 if (chan->masqr) { 03156 res = 0; /* XXX explain, why 0 ? */ 03157 goto done; 03158 } 03159 if (chan->generatordata && (!fr->src || strcasecmp(fr->src, "ast_prod"))) { 03160 if (ast_test_flag(chan, AST_FLAG_WRITE_INT)) { 03161 ast_deactivate_generator(chan); 03162 } else { 03163 if (fr->frametype == AST_FRAME_DTMF_END) { 03164 /* There is a generator running while we're in the middle of a digit. 03165 * It's probably inband DTMF, so go ahead and pass it so it can 03166 * stop the generator */ 03167 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03168 ast_channel_unlock(chan); 03169 res = ast_senddigit_end(chan, fr->subclass, fr->len); 03170 ast_channel_lock(chan); 03171 CHECK_BLOCKING(chan); 03172 } else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) { 03173 /* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */ 03174 res = (chan->tech->indicate == NULL) ? 0 : 03175 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 03176 } 03177 res = 0; /* XXX explain, why 0 ? */ 03178 goto done; 03179 } 03180 } 03181 /* High bit prints debugging */ 03182 if (chan->fout & DEBUGCHAN_FLAG) 03183 ast_frame_dump(chan->name, fr, ">>"); 03184 CHECK_BLOCKING(chan); 03185 switch(fr->frametype) { 03186 case AST_FRAME_CONTROL: 03187 res = (chan->tech->indicate == NULL) ? 0 : 03188 chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen); 03189 break; 03190 case AST_FRAME_DTMF_BEGIN: 03191 if (chan->audiohooks) { 03192 struct ast_frame *old_frame = fr; 03193 fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 03194 if (old_frame != fr) 03195 f = fr; 03196 } 03197 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03198 ast_channel_unlock(chan); 03199 res = ast_senddigit_begin(chan, fr->subclass); 03200 ast_channel_lock(chan); 03201 CHECK_BLOCKING(chan); 03202 break; 03203 case AST_FRAME_DTMF_END: 03204 if (chan->audiohooks) { 03205 struct ast_frame *new_frame = fr; 03206 03207 new_frame = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr); 03208 if (new_frame != fr) { 03209 ast_frfree(new_frame); 03210 } 03211 } 03212 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03213 ast_channel_unlock(chan); 03214 res = ast_senddigit_end(chan, fr->subclass, fr->len); 03215 ast_channel_lock(chan); 03216 CHECK_BLOCKING(chan); 03217 break; 03218 case AST_FRAME_TEXT: 03219 res = (chan->tech->send_text == NULL) ? 0 : 03220 chan->tech->send_text(chan, (char *) fr->data); 03221 break; 03222 case AST_FRAME_HTML: 03223 res = (chan->tech->send_html == NULL) ? 0 : 03224 chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen); 03225 break; 03226 case AST_FRAME_VIDEO: 03227 /* XXX Handle translation of video codecs one day XXX */ 03228 res = (chan->tech->write_video == NULL) ? 0 : 03229 chan->tech->write_video(chan, fr); 03230 break; 03231 case AST_FRAME_MODEM: 03232 res = (chan->tech->write == NULL) ? 0 : 03233 chan->tech->write(chan, fr); 03234 break; 03235 case AST_FRAME_VOICE: 03236 if (chan->tech->write == NULL) 03237 break; /*! \todo XXX should return 0 maybe ? */ 03238 03239 if (ast_opt_generic_plc && fr->subclass == AST_FORMAT_SLINEAR) { 03240 apply_plc(chan, fr); 03241 } 03242 03243 /* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */ 03244 if (fr->subclass == chan->rawwriteformat) 03245 f = fr; 03246 else 03247 f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr; 03248 03249 /* If we have no frame of audio, then we have to bail out */ 03250 if (!f) { 03251 res = 0; 03252 break; 03253 } 03254 03255 if (chan->audiohooks) { 03256 struct ast_frame *prev = NULL, *new_frame, *cur, *dup; 03257 int freeoldlist = 0; 03258 03259 if (f != fr) { 03260 freeoldlist = 1; 03261 } 03262 03263 /* Since ast_audiohook_write may return a new frame, and the cur frame is 03264 * an item in a list of frames, create a new list adding each cur frame back to it 03265 * regardless if the cur frame changes or not. */ 03266 for (cur = f; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 03267 new_frame = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, cur); 03268 03269 /* if this frame is different than cur, preserve the end of the list, 03270 * free the old frames, and set cur to be the new frame */ 03271 if (new_frame != cur) { 03272 03273 /* doing an ast_frisolate here seems silly, but we are not guaranteed the new_frame 03274 * isn't part of local storage, meaning if ast_audiohook_write is called multiple 03275 * times it may override the previous frame we got from it unless we dup it */ 03276 if ((dup = ast_frisolate(new_frame))) { 03277 AST_LIST_NEXT(dup, frame_list) = AST_LIST_NEXT(cur, frame_list); 03278 if (freeoldlist) { 03279 AST_LIST_NEXT(cur, frame_list) = NULL; 03280 ast_frfree(cur); 03281 } 03282 if (new_frame != dup) { 03283 ast_frfree(new_frame); 03284 } 03285 cur = dup; 03286 } 03287 } 03288 03289 /* now, regardless if cur is new or not, add it to the new list, 03290 * if the new list has not started, cur will become the first item. */ 03291 if (prev) { 03292 AST_LIST_NEXT(prev, frame_list) = cur; 03293 } else { 03294 f = cur; /* set f to be the beginning of our new list */ 03295 } 03296 prev = cur; 03297 } 03298 } 03299 03300 /* If Monitor is running on this channel, then we have to write frames out there too */ 03301 /* the translator on chan->writetrans may have returned multiple frames 03302 from the single frame we passed in; if so, feed each one of them to the 03303 monitor */ 03304 if (chan->monitor && chan->monitor->write_stream) { 03305 struct ast_frame *cur; 03306 03307 for (cur = f; cur; cur = AST_LIST_NEXT(cur, frame_list)) { 03308 /* XXX must explain this code */ 03309 #ifndef MONITOR_CONSTANT_DELAY 03310 int jump = chan->insmpl - chan->outsmpl - 4 * cur->samples; 03311 if (jump >= 0) { 03312 jump = chan->insmpl - chan->outsmpl; 03313 if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1) 03314 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 03315 chan->outsmpl += jump + cur->samples; 03316 } else { 03317 chan->outsmpl += cur->samples; 03318 } 03319 #else 03320 int jump = chan->insmpl - chan->outsmpl; 03321 if (jump - MONITOR_DELAY >= 0) { 03322 if (ast_seekstream(chan->monitor->write_stream, jump - cur->samples, SEEK_FORCECUR) == -1) 03323 ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n"); 03324 chan->outsmpl += jump; 03325 } else { 03326 chan->outsmpl += cur->samples; 03327 } 03328 #endif 03329 if (chan->monitor->state == AST_MONITOR_RUNNING) { 03330 if (ast_writestream(chan->monitor->write_stream, cur) < 0) 03331 ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n"); 03332 } 03333 } 03334 } 03335 03336 /* the translator on chan->writetrans may have returned multiple frames 03337 from the single frame we passed in; if so, feed each one of them to the 03338 channel, freeing each one after it has been written */ 03339 if ((f != fr) && AST_LIST_NEXT(f, frame_list)) { 03340 struct ast_frame *cur, *next; 03341 unsigned int skip = 0; 03342 03343 for (cur = f, next = AST_LIST_NEXT(cur, frame_list); 03344 cur; 03345 cur = next, next = cur ? AST_LIST_NEXT(cur, frame_list) : NULL) { 03346 if (!skip) { 03347 if ((res = chan->tech->write(chan, cur)) < 0) { 03348 chan->_softhangup |= AST_SOFTHANGUP_DEV; 03349 skip = 1; 03350 } else if (next) { 03351 /* don't do this for the last frame in the list, 03352 as the code outside the loop will do it once 03353 */ 03354 chan->fout = FRAMECOUNT_INC(chan->fout); 03355 } 03356 } 03357 ast_frfree(cur); 03358 } 03359 03360 /* reset f so the code below doesn't attempt to free it */ 03361 f = NULL; 03362 } else { 03363 res = chan->tech->write(chan, f); 03364 } 03365 break; 03366 case AST_FRAME_NULL: 03367 case AST_FRAME_IAX: 03368 /* Ignore these */ 03369 res = 0; 03370 break; 03371 default: 03372 /* At this point, fr is the incoming frame and f is NULL. Channels do 03373 * not expect to get NULL as a frame pointer and will segfault. Hence, 03374 * we output the original frame passed in. */ 03375 res = chan->tech->write(chan, fr); 03376 break; 03377 } 03378 03379 if (f && f != fr) 03380 ast_frfree(f); 03381 ast_clear_flag(chan, AST_FLAG_BLOCKING); 03382 03383 /* Consider a write failure to force a soft hangup */ 03384 if (res < 0) { 03385 chan->_softhangup |= AST_SOFTHANGUP_DEV; 03386 } else { 03387 chan->fout = FRAMECOUNT_INC(chan->fout); 03388 } 03389 done: 03390 if (chan->audiohooks && ast_audiohook_write_list_empty(chan->audiohooks)) { 03391 /* The list gets recreated if audiohooks are added again later */ 03392 ast_audiohook_detach_list(chan->audiohooks); 03393 chan->audiohooks = NULL; 03394 } 03395 ast_channel_unlock(chan); 03396 return res; 03397 }
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 3015 of file channel.c.
References ast_write(), ast_channel::tech, and ast_channel_tech::write_video.
03016 { 03017 int res; 03018 if (!chan->tech->write_video) 03019 return 0; 03020 res = ast_write(chan, fr); 03021 if (!res) 03022 res = 1; 03023 return res; 03024 }
static void bridge_playfile | ( | struct ast_channel * | chan, | |
struct ast_channel * | peer, | |||
const char * | sound, | |||
int | remain | |||
) | [static] |
Definition at line 4520 of file channel.c.
References ast_autoservice_start(), ast_autoservice_stop(), AST_DIGIT_ANY, ast_say_number(), ast_stream_and_wait(), and ast_channel::language.
Referenced by ast_channel_bridge().
04521 { 04522 int min = 0, sec = 0, check; 04523 04524 check = ast_autoservice_start(peer); 04525 if (check) 04526 return; 04527 04528 if (remain > 0) { 04529 if (remain / 60 > 1) { 04530 min = remain / 60; 04531 sec = remain % 60; 04532 } else { 04533 sec = remain; 04534 } 04535 } 04536 04537 if (!strcmp(sound,"timeleft")) { /* Queue support */ 04538 ast_stream_and_wait(chan, "vm-youhave", chan->language, ""); 04539 if (min) { 04540 ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL); 04541 ast_stream_and_wait(chan, "queue-minutes", chan->language, ""); 04542 } 04543 if (sec) { 04544 ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL); 04545 ast_stream_and_wait(chan, "queue-seconds", chan->language, ""); 04546 } 04547 } else { 04548 ast_stream_and_wait(chan, sound, chan->language, ""); 04549 } 04550 04551 ast_autoservice_stop(peer); 04552 }
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 1118 of file channel.c.
References ast_channel_trylock, AST_LIST_LOCK, AST_LIST_NEXT, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel::context, ast_channel::exten, LOG_DEBUG, ast_channel::macrocontext, ast_channel::macroexten, ast_channel::name, and option_debug.
Referenced by ast_channel_walk_locked(), ast_get_channel_by_exten_locked(), ast_get_channel_by_name_locked(), ast_get_channel_by_name_prefix_locked(), ast_walk_channel_by_exten_locked(), and ast_walk_channel_by_name_prefix_locked().
01121 { 01122 const char *msg = prev ? "deadlock" : "initial deadlock"; 01123 int retries; 01124 struct ast_channel *c; 01125 const struct ast_channel *_prev = prev; 01126 01127 for (retries = 0; retries < 200; retries++) { 01128 int done; 01129 /* Reset prev on each retry. See note below for the reason. */ 01130 prev = _prev; 01131 AST_LIST_LOCK(&channels); 01132 AST_LIST_TRAVERSE(&channels, c, chan_list) { 01133 if (prev) { /* look for last item, first, before any evaluation */ 01134 if (c != prev) /* not this one */ 01135 continue; 01136 /* found, prepare to return c->next */ 01137 if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break; 01138 /*!\note 01139 * We're done searching through the list for the previous item. 01140 * Any item after this point, we want to evaluate for a match. 01141 * If we didn't set prev to NULL here, then we would only 01142 * return matches for the first matching item (since the above 01143 * "if (c != prev)" would not permit any other potential 01144 * matches to reach the additional matching logic, below). 01145 * Instead, it would just iterate until it once again found the 01146 * original match, then iterate down to the end of the list and 01147 * quit. 01148 */ 01149 prev = NULL; 01150 } 01151 if (name) { /* want match by name */ 01152 if ((!namelen && strcasecmp(c->name, name)) || 01153 (namelen && strncasecmp(c->name, name, namelen))) 01154 continue; /* name match failed */ 01155 } else if (exten) { 01156 if (context && strcasecmp(c->context, context) && 01157 strcasecmp(c->macrocontext, context)) 01158 continue; /* context match failed */ 01159 if (strcasecmp(c->exten, exten) && 01160 strcasecmp(c->macroexten, exten)) 01161 continue; /* exten match failed */ 01162 } 01163 /* if we get here, c points to the desired record */ 01164 break; 01165 } 01166 /* exit if chan not found or mutex acquired successfully */ 01167 /* this is slightly unsafe, as we _should_ hold the lock to access c->name */ 01168 done = c == NULL || ast_channel_trylock(c) == 0; 01169 if (!done) { 01170 if (option_debug) 01171 ast_log(LOG_DEBUG, "Avoiding %s for channel '%p'\n", msg, c); 01172 if (retries == 199) { 01173 /* We are about to fail due to a deadlock, so report this 01174 * while we still have the list lock. 01175 */ 01176 if (option_debug) 01177 ast_log(LOG_DEBUG, "Failure, could not lock '%p' after %d retries!\n", c, retries); 01178 /* As we have deadlocked, we will skip this channel and 01179 * see if there is another match. 01180 * NOTE: No point doing this for a full-name match, 01181 * as there can be no more matches. 01182 */ 01183 if (!(name && !namelen)) { 01184 _prev = c; 01185 retries = -1; 01186 } 01187 } 01188 } 01189 AST_LIST_UNLOCK(&channels); 01190 if (done) 01191 return c; 01192 /* If we reach this point we basically tried to lock a channel and failed. Instead of 01193 * starting from the beginning of the list we can restore our saved pointer to the previous 01194 * channel and start from there. 01195 */ 01196 prev = _prev; 01197 usleep(1); /* give other threads a chance before retrying */ 01198 } 01199 01200 return NULL; 01201 }
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 5415 of file channel.c.
References CHANNEL_CLI_RELOAD, CHANNEL_MODULE_LOAD, and CHANNEL_MODULE_RELOAD.
05416 { 05417 switch (reason) { 05418 case CHANNEL_MODULE_LOAD: 05419 return "LOAD (Channel module load)"; 05420 05421 case CHANNEL_MODULE_RELOAD: 05422 return "RELOAD (Channel module reload)"; 05423 05424 case CHANNEL_CLI_RELOAD: 05425 return "CLIRELOAD (Channel module reload by CLI command)"; 05426 05427 default: 05428 return "MANAGERRELOAD (Channel module reload by manager)"; 05429 } 05430 };
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 4115 of file channel.c.
References AST_LIST_APPEND_LIST, AST_LIST_FIRST, AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_var_assign(), ast_var_t::entries, ast_var_t::name, ast_var_t::value, and ast_channel::varshead.
Referenced by ast_do_masquerade().
04116 { 04117 struct ast_var_t *current, *newvar; 04118 /* Append variables from clone channel into original channel */ 04119 /* XXX Is this always correct? We have to in order to keep MACROS working XXX */ 04120 if (AST_LIST_FIRST(&clone->varshead)) 04121 AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries); 04122 04123 /* then, dup the varshead list into the clone */ 04124 04125 AST_LIST_TRAVERSE(&original->varshead, current, entries) { 04126 newvar = ast_var_assign(current->name, current->value); 04127 if (newvar) 04128 AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries); 04129 } 04130 }
static char* complete_channeltypes | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 334 of file channel.c.
References AST_LIST_TRAVERSE, chanlist::list, strdup, chanlist::tech, and ast_channel_tech::type.
00335 { 00336 struct chanlist *cl; 00337 int which = 0; 00338 int wordlen; 00339 char *ret = NULL; 00340 00341 if (pos != 3) 00342 return NULL; 00343 00344 wordlen = strlen(word); 00345 00346 AST_LIST_TRAVERSE(&backends, cl, list) { 00347 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00348 ret = strdup(cl->tech->type); 00349 break; 00350 } 00351 } 00352 00353 return ret; 00354 }
static char* complete_channeltypes_deprecated | ( | const char * | line, | |
const char * | word, | |||
int | pos, | |||
int | state | |||
) | [static] |
Definition at line 312 of file channel.c.
References AST_LIST_TRAVERSE, chanlist::list, strdup, chanlist::tech, and ast_channel_tech::type.
00313 { 00314 struct chanlist *cl; 00315 int which = 0; 00316 int wordlen; 00317 char *ret = NULL; 00318 00319 if (pos != 2) 00320 return NULL; 00321 00322 wordlen = strlen(word); 00323 00324 AST_LIST_TRAVERSE(&backends, cl, list) { 00325 if (!strncasecmp(word, cl->tech->type, wordlen) && ++which > state) { 00326 ret = strdup(cl->tech->type); 00327 break; 00328 } 00329 } 00330 00331 return ret; 00332 }
static void free_cid | ( | struct ast_callerid * | cid | ) | [static] |
Definition at line 1340 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().
01341 { 01342 if (cid->cid_dnid) 01343 free(cid->cid_dnid); 01344 if (cid->cid_num) 01345 free(cid->cid_num); 01346 if (cid->cid_name) 01347 free(cid->cid_name); 01348 if (cid->cid_ani) 01349 free(cid->cid_ani); 01350 if (cid->cid_rdnis) 01351 free(cid->cid_rdnis); 01352 }
static void free_translation | ( | struct ast_channel * | clone | ) | [static] |
Definition at line 1622 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().
01623 { 01624 if (clone->writetrans) 01625 ast_translator_free_path(clone->writetrans); 01626 if (clone->readtrans) 01627 ast_translator_free_path(clone->readtrans); 01628 clone->writetrans = NULL; 01629 clone->readtrans = NULL; 01630 clone->rawwriteformat = clone->nativeformats; 01631 clone->rawreadformat = clone->nativeformats; 01632 }
static int generator_force | ( | const void * | data | ) | [static] |
Definition at line 1789 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_deactivate_generator(), AST_FORMAT_AUDIO_MASK, ast_format_rate(), ast_log(), LOG_DEBUG, and option_debug.
Referenced by ast_activate_generator(), and ast_read_generator_actions().
01790 { 01791 /* Called if generator doesn't have data */ 01792 void *tmp; 01793 int res; 01794 int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples) = NULL; 01795 struct ast_channel *chan = (struct ast_channel *)data; 01796 01797 ast_channel_lock(chan); 01798 tmp = chan->generatordata; 01799 chan->generatordata = NULL; 01800 if (chan->generator) 01801 generate = chan->generator->generate; 01802 ast_channel_unlock(chan); 01803 01804 if (!tmp || !generate) 01805 return 0; 01806 01807 res = generate(chan, tmp, 0, ast_format_rate(chan->writeformat & AST_FORMAT_AUDIO_MASK) / 50); 01808 01809 chan->generatordata = tmp; 01810 01811 if (res) { 01812 if (option_debug) 01813 ast_log(LOG_DEBUG, "Auto-deactivating generator\n"); 01814 ast_deactivate_generator(chan); 01815 } 01816 01817 return 0; 01818 }
static void handle_cause | ( | int | cause, | |
int * | outstate | |||
) | [static] |
Definition at line 3502 of file channel.c.
References AST_CAUSE_BUSY, AST_CAUSE_CONGESTION, AST_CONTROL_BUSY, and AST_CONTROL_CONGESTION.
Referenced by __ast_request_and_dial(), and ast_call_forward().
03503 { 03504 if (outstate) { 03505 /* compute error and return */ 03506 if (cause == AST_CAUSE_BUSY) 03507 *outstate = AST_CONTROL_BUSY; 03508 else if (cause == AST_CAUSE_CONGESTION) 03509 *outstate = AST_CONTROL_CONGESTION; 03510 else 03511 *outstate = 0; 03512 } 03513 }
static int attribute_const is_visible_indication | ( | enum ast_control_frame_type | condition | ) | [static] |
Definition at line 2732 of file channel.c.
References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_END_OF_Q, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_SRCCHANGE, AST_CONTROL_SRCUPDATE, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, and AST_CONTROL_WINK.
Referenced by ast_indicate_data().
02733 { 02734 /* Don't include a default case here so that we get compiler warnings 02735 * when a new type is added. */ 02736 02737 switch (condition) { 02738 case AST_CONTROL_PROGRESS: 02739 case AST_CONTROL_PROCEEDING: 02740 case AST_CONTROL_VIDUPDATE: 02741 case AST_CONTROL_SRCUPDATE: 02742 case AST_CONTROL_SRCCHANGE: 02743 case AST_CONTROL_RADIO_KEY: 02744 case AST_CONTROL_RADIO_UNKEY: 02745 case AST_CONTROL_OPTION: 02746 case AST_CONTROL_WINK: 02747 case AST_CONTROL_FLASH: 02748 case AST_CONTROL_OFFHOOK: 02749 case AST_CONTROL_TAKEOFFHOOK: 02750 case AST_CONTROL_ANSWER: 02751 case AST_CONTROL_HANGUP: 02752 case AST_CONTROL_END_OF_Q: 02753 return 0; 02754 02755 case AST_CONTROL_CONGESTION: 02756 case AST_CONTROL_BUSY: 02757 case AST_CONTROL_RINGING: 02758 case AST_CONTROL_RING: 02759 case AST_CONTROL_HOLD: 02760 case AST_CONTROL_UNHOLD: 02761 return 1; 02762 } 02763 02764 return 0; 02765 }
static void plc_ds_destroy | ( | void * | data | ) | [static] |
Definition at line 3039 of file channel.c.
References ast_free, and plc_ds::samples_buf.
03040 { 03041 struct plc_ds *plc = data; 03042 ast_free(plc->samples_buf); 03043 ast_free(plc); 03044 }
static void queue_dtmf_readq | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) | [inline, static] |
Definition at line 2175 of file channel.c.
References AST_FRAME_DTMF_END, ast_queue_frame(), ast_channel::dtmff, f, ast_frame::frametype, ast_frame::len, and ast_frame::subclass.
Referenced by __ast_read().
02176 { 02177 struct ast_frame *fr = &chan->dtmff; 02178 02179 fr->frametype = AST_FRAME_DTMF_END; 02180 fr->subclass = f->subclass; 02181 fr->len = f->len; 02182 02183 /* The only time this function will be called is for a frame that just came 02184 * out of the channel driver. So, we want to stick it on the tail of the 02185 * readq. */ 02186 02187 ast_queue_frame(chan, fr); 02188 }
static void report_new_callerid | ( | const struct ast_channel * | chan | ) | [static] |
Definition at line 4135 of file channel.c.
References ast_describe_caller_presentation(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_pres, manager_event(), ast_channel::name, S_OR, and ast_channel::uniqueid.
Referenced by ast_do_masquerade(), and ast_set_callerid().
04136 { 04137 manager_event(EVENT_FLAG_CALL, "Newcallerid", 04138 "Channel: %s\r\n" 04139 "CallerID: %s\r\n" 04140 "CallerIDName: %s\r\n" 04141 "Uniqueid: %s\r\n" 04142 "CID-CallingPres: %d (%s)\r\n", 04143 chan->name, 04144 S_OR(chan->cid.cid_num, "<Unknown>"), 04145 S_OR(chan->cid.cid_name, "<Unknown>"), 04146 chan->uniqueid, 04147 chan->cid.cid_pres, 04148 ast_describe_caller_presentation(chan->cid.cid_pres) 04149 ); 04150 }
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 3399 of file channel.c.
References ast_channel_lock, ast_channel_unlock, AST_FORMAT_AUDIO_MASK, ast_getformatname(), ast_getformatname_multiple(), ast_log(), ast_translator_best_choice(), ast_translator_build_path(), ast_translator_free_path(), LOG_DEBUG, ast_channel::name, ast_channel::nativeformats, and option_debug.
Referenced by ast_set_read_format(), and ast_set_write_format().
03401 { 03402 int native; 03403 int res; 03404 char from[200], to[200]; 03405 03406 /* Make sure we only consider audio */ 03407 fmt &= AST_FORMAT_AUDIO_MASK; 03408 03409 native = chan->nativeformats; 03410 /* Find a translation path from the native format to one of the desired formats */ 03411 if (!direction) 03412 /* reading */ 03413 res = ast_translator_best_choice(&fmt, &native); 03414 else 03415 /* writing */ 03416 res = ast_translator_best_choice(&native, &fmt); 03417 03418 if (res < 0) { 03419 ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n", 03420 ast_getformatname_multiple(from, sizeof(from), native), 03421 ast_getformatname_multiple(to, sizeof(to), fmt)); 03422 return -1; 03423 } 03424 03425 /* Now we have a good choice for both. */ 03426 ast_channel_lock(chan); 03427 03428 if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) { 03429 /* the channel is already in these formats, so nothing to do */ 03430 ast_channel_unlock(chan); 03431 return 0; 03432 } 03433 03434 *rawformat = native; 03435 /* User perspective is fmt */ 03436 *format = fmt; 03437 /* Free any read translation we have right now */ 03438 if (*trans) { 03439 ast_translator_free_path(*trans); 03440 *trans = NULL; 03441 } 03442 /* Build a translation path from the raw format to the desired format */ 03443 if (*format == *rawformat) { 03444 /* 03445 * If we were able to swap the native format to the format that 03446 * has been requested, then there is no need to try to build 03447 * a translation path. 03448 */ 03449 res = 0; 03450 } else { 03451 if (!direction) { 03452 /* reading */ 03453 *trans = ast_translator_build_path(*format, *rawformat); 03454 } else { 03455 /* writing */ 03456 *trans = ast_translator_build_path(*rawformat, *format); 03457 } 03458 res = *trans ? 0 : -1; 03459 } 03460 ast_channel_unlock(chan); 03461 if (option_debug) 03462 ast_log(LOG_DEBUG, "Set channel %s to %s format %s\n", chan->name, 03463 direction ? "write" : "read", ast_getformatname(fmt)); 03464 return res; 03465 }
static int should_skip_dtmf | ( | struct ast_channel * | chan | ) | [inline, static] |
Determine whether or not we should ignore DTMF in the readq.
Definition at line 2193 of file channel.c.
References AST_FLAG_DEFER_DTMF, AST_FLAG_EMULATE_DTMF, AST_MIN_DTMF_GAP, ast_test_flag, ast_tvdiff_ms(), ast_tvnow(), ast_tvzero(), and ast_channel::dtmf_tv.
Referenced by __ast_read().
02194 { 02195 if (ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF)) { 02196 /* We're in the middle of emulating a digit, or DTMF has been 02197 * explicitly deferred. Skip this digit, then. */ 02198 return 1; 02199 } 02200 02201 if (!ast_tvzero(chan->dtmf_tv) && 02202 ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) { 02203 /* We're not in the middle of a digit, but it hasn't been long enough 02204 * since the last digit, so we'll have to skip DTMF for now. */ 02205 return 1; 02206 } 02207 02208 return 0; 02209 }
static int show_channeltype | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 259 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, ast_channel_tech::devicestate, ast_channel_tech::indicate, chanlist::list, LOG_WARNING, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, ast_channel_tech::send_digit_begin, ast_channel_tech::send_digit_end, ast_channel_tech::send_html, ast_channel_tech::send_image, ast_channel_tech::send_text, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00260 { 00261 struct chanlist *cl = NULL; 00262 00263 if (argc != 4) 00264 return RESULT_SHOWUSAGE; 00265 00266 if (AST_LIST_LOCK(&channels)) { 00267 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00268 return RESULT_FAILURE; 00269 } 00270 00271 AST_LIST_TRAVERSE(&backends, cl, list) { 00272 if (!strncasecmp(cl->tech->type, argv[3], strlen(cl->tech->type))) { 00273 break; 00274 } 00275 } 00276 00277 00278 if (!cl) { 00279 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]); 00280 AST_LIST_UNLOCK(&channels); 00281 return RESULT_FAILURE; 00282 } 00283 00284 ast_cli(fd, 00285 "-- Info about channel driver: %s --\n" 00286 " Device State: %s\n" 00287 " Indication: %s\n" 00288 " Transfer : %s\n" 00289 " Capabilities: %d\n" 00290 " Digit Begin: %s\n" 00291 " Digit End: %s\n" 00292 " Send HTML : %s\n" 00293 " Image Support: %s\n" 00294 " Text Support: %s\n", 00295 cl->tech->type, 00296 (cl->tech->devicestate) ? "yes" : "no", 00297 (cl->tech->indicate) ? "yes" : "no", 00298 (cl->tech->transfer) ? "yes" : "no", 00299 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00300 (cl->tech->send_digit_begin) ? "yes" : "no", 00301 (cl->tech->send_digit_end) ? "yes" : "no", 00302 (cl->tech->send_html) ? "yes" : "no", 00303 (cl->tech->send_image) ? "yes" : "no", 00304 (cl->tech->send_text) ? "yes" : "no" 00305 00306 ); 00307 00308 AST_LIST_UNLOCK(&channels); 00309 return RESULT_SUCCESS; 00310 }
static int show_channeltype_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 206 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::capabilities, ast_channel_tech::devicestate, ast_channel_tech::indicate, chanlist::list, LOG_WARNING, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, ast_channel_tech::send_digit_begin, ast_channel_tech::send_digit_end, ast_channel_tech::send_html, ast_channel_tech::send_image, ast_channel_tech::send_text, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00207 { 00208 struct chanlist *cl = NULL; 00209 00210 if (argc != 3) 00211 return RESULT_SHOWUSAGE; 00212 00213 if (AST_LIST_LOCK(&channels)) { 00214 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00215 return RESULT_FAILURE; 00216 } 00217 00218 AST_LIST_TRAVERSE(&backends, cl, list) { 00219 if (!strncasecmp(cl->tech->type, argv[2], strlen(cl->tech->type))) { 00220 break; 00221 } 00222 } 00223 00224 00225 if (!cl) { 00226 ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[2]); 00227 AST_LIST_UNLOCK(&channels); 00228 return RESULT_FAILURE; 00229 } 00230 00231 ast_cli(fd, 00232 "-- Info about channel driver: %s --\n" 00233 " Device State: %s\n" 00234 " Indication: %s\n" 00235 " Transfer : %s\n" 00236 " Capabilities: %d\n" 00237 " Digit Begin: %s\n" 00238 " Digit End: %s\n" 00239 " Send HTML : %s\n" 00240 " Image Support: %s\n" 00241 " Text Support: %s\n", 00242 cl->tech->type, 00243 (cl->tech->devicestate) ? "yes" : "no", 00244 (cl->tech->indicate) ? "yes" : "no", 00245 (cl->tech->transfer) ? "yes" : "no", 00246 (cl->tech->capabilities) ? cl->tech->capabilities : -1, 00247 (cl->tech->send_digit_begin) ? "yes" : "no", 00248 (cl->tech->send_digit_end) ? "yes" : "no", 00249 (cl->tech->send_html) ? "yes" : "no", 00250 (cl->tech->send_image) ? "yes" : "no", 00251 (cl->tech->send_text) ? "yes" : "no" 00252 00253 ); 00254 00255 AST_LIST_UNLOCK(&channels); 00256 return RESULT_SUCCESS; 00257 }
static int show_channeltypes | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 179 of file channel.c.
References ast_cli(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_channel_tech::description, ast_channel_tech::devicestate, FORMAT, ast_channel_tech::indicate, chanlist::list, LOG_WARNING, RESULT_SUCCESS, chanlist::tech, ast_channel_tech::transfer, and ast_channel_tech::type.
00180 { 00181 #define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n" 00182 struct chanlist *cl; 00183 int count_chan = 0; 00184 00185 ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer"); 00186 ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------"); 00187 if (AST_LIST_LOCK(&channels)) { 00188 ast_log(LOG_WARNING, "Unable to lock channel list\n"); 00189 return -1; 00190 } 00191 AST_LIST_TRAVERSE(&backends, cl, list) { 00192 ast_cli(fd, FORMAT, cl->tech->type, cl->tech->description, 00193 (cl->tech->devicestate) ? "yes" : "no", 00194 (cl->tech->indicate) ? "yes" : "no", 00195 (cl->tech->transfer) ? "yes" : "no"); 00196 count_chan++; 00197 } 00198 AST_LIST_UNLOCK(&channels); 00199 ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan); 00200 return RESULT_SUCCESS; 00201 00202 #undef FORMAT 00203 00204 }
static void* silence_generator_alloc | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static int silence_generator_generate | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 5347 of file channel.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_write(), and ast_frame::frametype.
05348 { 05349 short buf[samples]; 05350 struct ast_frame frame = { 05351 .frametype = AST_FRAME_VOICE, 05352 .subclass = AST_FORMAT_SLINEAR, 05353 .data = buf, 05354 .samples = samples, 05355 .datalen = sizeof(buf), 05356 }; 05357 memset(buf, 0, sizeof(buf)); 05358 if (ast_write(chan, &frame)) 05359 return -1; 05360 return 0; 05361 }
static void silence_generator_release | ( | struct ast_channel * | chan, | |
void * | data | |||
) | [static] |
static void state2str_threadbuf_init | ( | void | ) | [static] |
static void* tonepair_alloc | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 5083 of file channel.c.
References ast_calloc, AST_FLAG_WRITE_INT, AST_FORMAT_SLINEAR, ast_log(), ast_set_flag, ast_set_write_format(), tonepair_def::duration, tonepair_def::freq1, tonepair_def::freq2, ast_channel::name, tonepair_release(), tonepair_def::vol, and ast_channel::writeformat.
05084 { 05085 struct tonepair_state *ts; 05086 struct tonepair_def *td = params; 05087 05088 if (!(ts = ast_calloc(1, sizeof(*ts)))) 05089 return NULL; 05090 ts->origwfmt = chan->writeformat; 05091 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) { 05092 ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name); 05093 tonepair_release(NULL, ts); 05094 ts = NULL; 05095 } else { 05096 ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0; 05097 ts->v1_1 = 0; 05098 ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 05099 ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol; 05100 ts->v2_1 = 0; 05101 ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0; 05102 ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 05103 ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol; 05104 ts->duration = td->duration; 05105 ts->modulate = 0; 05106 } 05107 /* Let interrupts interrupt :) */ 05108 ast_set_flag(chan, AST_FLAG_WRITE_INT); 05109 return ts; 05110 }
static int tonepair_generator | ( | struct ast_channel * | chan, | |
void * | data, | |||
int | len, | |||
int | samples | |||
) | [static] |
Definition at line 5112 of file channel.c.
References ast_log(), tonepair_state::data, tonepair_state::f, tonepair_state::fac1, tonepair_state::fac2, tonepair_state::modulate, tonepair_state::v1_1, tonepair_state::v1_2, tonepair_state::v2_1, tonepair_state::v2_2, tonepair_state::v3_1, and tonepair_state::v3_2.
05113 { 05114 struct tonepair_state *ts = data; 05115 int x; 05116 05117 /* we need to prepare a frame with 16 * timelen samples as we're 05118 * generating SLIN audio 05119 */ 05120 len = samples * 2; 05121 05122 if (len > sizeof(ts->data) / 2 - 1) { 05123 ast_log(LOG_WARNING, "Can't generate that much data!\n"); 05124 return -1; 05125 } 05126 memset(&ts->f, 0, sizeof(ts->f)); 05127 for (x=0;x<len/2;x++) { 05128 ts->v1_1 = ts->v2_1; 05129 ts->v2_1 = ts->v3_1; 05130 ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1; 05131 05132 ts->v1_2 = ts->v2_2; 05133 ts->v2_2 = ts->v3_2; 05134 ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2; 05135 if (ts->modulate) { 05136 int p; 05137 p = ts->v3_2 - 32768; 05138 if (p < 0) p = -p; 05139 p = ((p * 9) / 10) + 1; 05140 ts->data[x] = (ts->v3_1 * p) >> 15; 05141 } else 05142 ts->data[x] = ts->v3_1 + ts->v3_2; 05143 } 05144 ts->f.frametype = AST_FRAME_VOICE; 05145 ts->f.subclass = AST_FORMAT_SLINEAR; 05146 ts->f.datalen = len; 05147 ts->f.samples = samples; 05148 ts->f.offset = AST_FRIENDLY_OFFSET; 05149 ts->f.data = ts->data; 05150 ast_write(chan, &ts->f); 05151 ts->pos += x; 05152 if (ts->duration > 0) { 05153 if (ts->pos >= ts->duration * 8) 05154 return -1; 05155 } 05156 return 0; 05157 }
static void tonepair_release | ( | struct ast_channel * | chan, | |
void * | params | |||
) | [static] |
Definition at line 5074 of file channel.c.
References ast_set_write_format(), free, and tonepair_state::origwfmt.
Referenced by tonepair_alloc().
05075 { 05076 struct tonepair_state *ts = params; 05077 05078 if (chan) 05079 ast_set_write_format(chan, ts->origwfmt); 05080 free(ts); 05081 }
static void update_bridgepeer | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) | [static] |
Definition at line 4732 of file channel.c.
References ast_channel_lock, ast_channel_unlock, ast_strdupa, ast_strlen_zero(), ast_channel::name, pbx_builtin_getvar_helper(), and pbx_builtin_setvar_helper().
Referenced by ast_channel_bridge().
04733 { 04734 const char *c0_name; 04735 const char *c1_name; 04736 04737 ast_channel_lock(c1); 04738 c1_name = ast_strdupa(c1->name); 04739 ast_channel_unlock(c1); 04740 04741 ast_channel_lock(c0); 04742 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER"))) { 04743 pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1_name); 04744 } 04745 c0_name = ast_strdupa(c0->name); 04746 ast_channel_unlock(c0); 04747 04748 ast_channel_lock(c1); 04749 if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER"))) { 04750 pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0_name); 04751 } 04752 ast_channel_unlock(c1); 04753 }
void(*) ast_moh_cleanup_ptr(struct ast_channel *) = NULL [static] |
Definition at line 5235 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 5233 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 5234 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] |
struct ast_datastore_info plc_ds_info [static] |
Initial value:
{ .type = "plc", .destroy = plc_ds_destroy, }
Definition at line 3046 of file channel.c.
Referenced by apply_plc().
char show_channeltype_usage[] [static] |
char show_channeltypes_usage[] [static] |
int shutting_down [static] |
struct ast_generator silence_generator [static] |
Initial value:
{ .alloc = silence_generator_alloc, .release = silence_generator_release, .generate = silence_generator_generate, }
Definition at line 5363 of file channel.c.
Referenced by ast_channel_start_silence_generator().
struct ast_threadstorage state2str_threadbuf = { .once = PTHREAD_ONCE_INIT , .key_init = state2str_threadbuf_init , } [static] |
struct ast_generator tonepair [static] |
Initial value:
{ alloc: tonepair_alloc, release: tonepair_release, generate: tonepair_generator, }
Definition at line 5159 of file channel.c.
Referenced by ast_tonepair_start().