#include "asterisk.h"
#include <signal.h>
#include "asterisk/channel.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/linkedlists.h"
#include "asterisk/audiohook.h"
#include "asterisk/slinfactory.h"
#include "asterisk/frame.h"
#include "asterisk/translate.h"
Go to the source code of this file.
Data Structures | |
struct | ast_audiohook_list |
struct | ast_audiohook_translate |
Functions | |
int | ast_audiohook_attach (struct ast_channel *chan, struct ast_audiohook *audiohook) |
Attach audiohook to channel. | |
int | ast_audiohook_destroy (struct ast_audiohook *audiohook) |
Destroys an audiohook structure. | |
int | ast_audiohook_detach (struct ast_audiohook *audiohook) |
Detach audiohook from channel. | |
int | ast_audiohook_detach_list (struct ast_audiohook_list *audiohook_list) |
Detach audiohooks from list and destroy said list. | |
int | ast_audiohook_detach_source (struct ast_channel *chan, const char *source) |
Detach specified source audiohook from channel. | |
int | ast_audiohook_init (struct ast_audiohook *audiohook, enum ast_audiohook_type type, const char *source) |
Initialize an audiohook structure. | |
void | ast_audiohook_move_by_source (struct ast_channel *old_chan, struct ast_channel *new_chan, const char *source) |
Move an audiohook from one channel to a new one. | |
ast_frame * | ast_audiohook_read_frame (struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction, int format) |
Reads a frame in from the audiohook structure. | |
int | ast_audiohook_remove (struct ast_channel *chan, struct ast_audiohook *audiohook) |
Remove an audiohook from a specified channel. | |
void | ast_audiohook_trigger_wait (struct ast_audiohook *audiohook) |
Wait for audiohook trigger to be triggered. | |
int | ast_audiohook_write_frame (struct ast_audiohook *audiohook, enum ast_audiohook_direction direction, struct ast_frame *frame) |
Writes a frame into the audiohook structure. | |
ast_frame * | ast_audiohook_write_list (struct ast_channel *chan, struct ast_audiohook_list *audiohook_list, enum ast_audiohook_direction direction, struct ast_frame *frame) |
Pass a frame off to be handled by the audiohook core. | |
int | ast_channel_audiohook_count_by_source (struct ast_channel *chan, const char *source, enum ast_audiohook_type type) |
Find out how many audiohooks from a certain source exist on a given channel, regardless of status. | |
int | ast_channel_audiohook_count_by_source_running (struct ast_channel *chan, const char *source, enum ast_audiohook_type type) |
Find out how many spies of a certain type exist on a given channel, and are in state running. | |
static struct ast_frame * | audio_audiohook_write_list (struct ast_channel *chan, struct ast_audiohook_list *audiohook_list, enum ast_audiohook_direction direction, struct ast_frame *frame) |
Pass an AUDIO frame off to be handled by the audiohook core. | |
static struct ast_frame * | audiohook_read_frame_both (struct ast_audiohook *audiohook, size_t samples) |
static struct ast_frame * | audiohook_read_frame_single (struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction) |
static struct ast_frame * | dtmf_audiohook_write_list (struct ast_channel *chan, struct ast_audiohook_list *audiohook_list, enum ast_audiohook_direction direction, struct ast_frame *frame) |
Pass a DTMF frame off to be handled by the audiohook core. | |
static struct ast_audiohook * | find_audiohook_by_source (struct ast_audiohook_list *audiohook_list, const char *source) |
find an audiohook based on its source |
Definition in file audiohook.c.
int ast_audiohook_attach | ( | struct ast_channel * | chan, | |
struct ast_audiohook * | audiohook | |||
) |
Attach audiohook to channel.
chan | Channel | |
audiohook | Audiohook structure |
Definition at line 330 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_RUNNING, AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_calloc, ast_channel_lock, ast_channel_unlock, AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_INSERT_TAIL, ast_channel::audiohooks, chan, ast_audiohook_list::manipulate_list, ast_audiohook_list::spy_list, ast_audiohook::status, ast_audiohook::type, and ast_audiohook_list::whisper_list.
Referenced by ast_audiohook_move_by_source(), enable_jack_hook(), start_spying(), startmon(), and volume_write().
00331 { 00332 ast_channel_lock(chan); 00333 00334 if (!chan->audiohooks) { 00335 /* Whoops... allocate a new structure */ 00336 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) { 00337 ast_channel_unlock(chan); 00338 return -1; 00339 } 00340 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list); 00341 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list); 00342 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list); 00343 } 00344 00345 /* Drop into respective list */ 00346 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00347 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list); 00348 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00349 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list); 00350 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00351 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list); 00352 00353 /* Change status over to running since it is now attached */ 00354 audiohook->status = AST_AUDIOHOOK_STATUS_RUNNING; 00355 00356 ast_channel_unlock(chan); 00357 00358 return 0; 00359 }
int ast_audiohook_destroy | ( | struct ast_audiohook * | audiohook | ) |
Destroys an audiohook structure.
audiohook | Audiohook structure |
Definition at line 91 of file audiohook.c.
References AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_cond_destroy(), ast_mutex_destroy(), ast_slinfactory_destroy(), ast_translator_free_path(), ast_audiohook::lock, ast_audiohook::read_factory, ast_audiohook::trans_pvt, ast_audiohook::trigger, ast_audiohook::type, and ast_audiohook::write_factory.
Referenced by channel_spy(), destroy_callback(), destroy_jack_data(), launch_monitor_thread(), and mixmonitor_thread().
00092 { 00093 /* Drop the factories used by this audiohook type */ 00094 switch (audiohook->type) { 00095 case AST_AUDIOHOOK_TYPE_SPY: 00096 ast_slinfactory_destroy(&audiohook->read_factory); 00097 case AST_AUDIOHOOK_TYPE_WHISPER: 00098 ast_slinfactory_destroy(&audiohook->write_factory); 00099 break; 00100 default: 00101 break; 00102 } 00103 00104 /* Destroy translation path if present */ 00105 if (audiohook->trans_pvt) 00106 ast_translator_free_path(audiohook->trans_pvt); 00107 00108 /* Lock and trigger be gone! */ 00109 ast_cond_destroy(&audiohook->trigger); 00110 ast_mutex_destroy(&audiohook->lock); 00111 00112 return 0; 00113 }
int ast_audiohook_detach | ( | struct ast_audiohook * | audiohook | ) |
Detach audiohook from channel.
audiohook | Audiohook structure |
Definition at line 365 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_SHUTDOWN, ast_audiohook_trigger_wait(), and ast_audiohook::status.
Referenced by channel_spy(), disable_jack_hook(), and mixmonitor_thread().
00366 { 00367 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00368 return 0; 00369 00370 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00371 00372 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00373 ast_audiohook_trigger_wait(audiohook); 00374 00375 return 0; 00376 }
int ast_audiohook_detach_list | ( | struct ast_audiohook_list * | audiohook_list | ) |
Detach audiohooks from list and destroy said list.
audiohook_list | List of audiohooks |
Definition at line 382 of file audiohook.c.
References ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, ast_audiohook_unlock, ast_cond_signal(), ast_free, AST_LIST_REMOVE_HEAD, ast_translator_free_path(), ast_audiohook_list::in_translate, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook_list::out_translate, ast_audiohook_list::spy_list, ast_audiohook_translate::trans_pvt, and ast_audiohook_list::whisper_list.
Referenced by ast_hangup().
00383 { 00384 int i = 0; 00385 struct ast_audiohook *audiohook = NULL; 00386 00387 /* Drop any spies */ 00388 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->spy_list, list))) { 00389 ast_audiohook_lock(audiohook); 00390 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00391 ast_cond_signal(&audiohook->trigger); 00392 ast_audiohook_unlock(audiohook); 00393 } 00394 00395 /* Drop any whispering sources */ 00396 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->whisper_list, list))) { 00397 ast_audiohook_lock(audiohook); 00398 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00399 ast_cond_signal(&audiohook->trigger); 00400 ast_audiohook_unlock(audiohook); 00401 } 00402 00403 /* Drop any manipulaters */ 00404 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->manipulate_list, list))) { 00405 ast_audiohook_lock(audiohook); 00406 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00407 ast_audiohook_unlock(audiohook); 00408 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00409 } 00410 00411 /* Drop translation paths if present */ 00412 for (i = 0; i < 2; i++) { 00413 if (audiohook_list->in_translate[i].trans_pvt) 00414 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt); 00415 if (audiohook_list->out_translate[i].trans_pvt) 00416 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt); 00417 } 00418 00419 /* Free ourselves */ 00420 ast_free(audiohook_list); 00421 00422 return 0; 00423 }
int ast_audiohook_detach_source | ( | struct ast_channel * | chan, | |
const char * | source | |||
) |
Detach specified source audiohook from channel.
chan | Channel to detach from | |
source | Name of source to detach |
Definition at line 476 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_SHUTDOWN, ast_channel_lock, ast_channel_unlock, ast_channel::audiohooks, chan, find_audiohook_by_source(), and ast_audiohook::status.
Referenced by handle_cli_mixmonitor(), and stop_mixmonitor_exec().
00477 { 00478 struct ast_audiohook *audiohook = NULL; 00479 00480 ast_channel_lock(chan); 00481 00482 /* Ensure the channel has audiohooks on it */ 00483 if (!chan->audiohooks) { 00484 ast_channel_unlock(chan); 00485 return -1; 00486 } 00487 00488 audiohook = find_audiohook_by_source(chan->audiohooks, source); 00489 00490 ast_channel_unlock(chan); 00491 00492 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00493 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00494 00495 return (audiohook ? 0 : -1); 00496 }
int ast_audiohook_init | ( | struct ast_audiohook * | audiohook, | |
enum ast_audiohook_type | type, | |||
const char * | source | |||
) |
Initialize an audiohook structure.
audiohook | Audiohook structure | |
type | ||
source |
Definition at line 60 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_NEW, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_cond_init(), ast_mutex_init(), and ast_slinfactory_init().
Referenced by channel_spy(), enable_jack_hook(), launch_monitor_thread(), and volume_write().
00061 { 00062 /* Need to keep the type and source */ 00063 audiohook->type = type; 00064 audiohook->source = source; 00065 00066 /* Initialize lock that protects our audiohook */ 00067 ast_mutex_init(&audiohook->lock); 00068 ast_cond_init(&audiohook->trigger, NULL); 00069 00070 /* Setup the factories that are needed for this audiohook type */ 00071 switch (type) { 00072 case AST_AUDIOHOOK_TYPE_SPY: 00073 ast_slinfactory_init(&audiohook->read_factory); 00074 case AST_AUDIOHOOK_TYPE_WHISPER: 00075 ast_slinfactory_init(&audiohook->write_factory); 00076 break; 00077 default: 00078 break; 00079 } 00080 00081 /* Since we are just starting out... this audiohook is new */ 00082 audiohook->status = AST_AUDIOHOOK_STATUS_NEW; 00083 00084 return 0; 00085 }
void ast_audiohook_move_by_source | ( | struct ast_channel * | old_chan, | |
struct ast_channel * | new_chan, | |||
const char * | source | |||
) |
Move an audiohook from one channel to a new one.
old_chan | The source of the audiohook to move | |
new_chan | The destination to which we want the audiohook to move | |
source | The source of the audiohook we want to move |
Definition at line 452 of file audiohook.c.
References ast_audiohook_attach(), ast_audiohook_lock, ast_audiohook_remove(), ast_audiohook_unlock, ast_channel::audiohooks, and find_audiohook_by_source().
Referenced by audiohook_inheritance_fixup().
00453 { 00454 struct ast_audiohook *audiohook; 00455 00456 if (!old_chan->audiohooks || !(audiohook = find_audiohook_by_source(old_chan->audiohooks, source))) { 00457 return; 00458 } 00459 00460 /* By locking both channels and the audiohook, we can assure that 00461 * another thread will not have a chance to read the audiohook's status 00462 * as done, even though ast_audiohook_remove signals the trigger 00463 * condition 00464 */ 00465 ast_audiohook_lock(audiohook); 00466 ast_audiohook_remove(old_chan, audiohook); 00467 ast_audiohook_attach(new_chan, audiohook); 00468 ast_audiohook_unlock(audiohook); 00469 }
struct ast_frame* ast_audiohook_read_frame | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction, | |||
int | format | |||
) |
Reads a frame in from the audiohook structure.
audiohook | Audiohook structure | |
samples | Number of samples wanted | |
direction | Direction the audio frame came from | |
format | Format of frame remote side wants back |
Definition at line 295 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_BOTH, AST_FORMAT_SLINEAR, ast_frfree, ast_translate(), ast_translator_build_path(), ast_translator_free_path(), audiohook_read_frame_both(), and audiohook_read_frame_single().
Referenced by mixmonitor_thread(), and spy_generate().
00296 { 00297 struct ast_frame *read_frame = NULL, *final_frame = NULL; 00298 00299 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction)))) 00300 return NULL; 00301 00302 /* If they don't want signed linear back out, we'll have to send it through the translation path */ 00303 if (format != AST_FORMAT_SLINEAR) { 00304 /* Rebuild translation path if different format then previously */ 00305 if (audiohook->format != format) { 00306 if (audiohook->trans_pvt) { 00307 ast_translator_free_path(audiohook->trans_pvt); 00308 audiohook->trans_pvt = NULL; 00309 } 00310 /* Setup new translation path for this format... if we fail we can't very well return signed linear so free the frame and return nothing */ 00311 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) { 00312 ast_frfree(read_frame); 00313 return NULL; 00314 } 00315 } 00316 /* Convert to requested format, and allow the read in frame to be freed */ 00317 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1); 00318 } else { 00319 final_frame = read_frame; 00320 } 00321 00322 return final_frame; 00323 }
int ast_audiohook_remove | ( | struct ast_channel * | chan, | |
struct ast_audiohook * | audiohook | |||
) |
Remove an audiohook from a specified channel.
chan | Channel to remove from | |
audiohook | Audiohook to remove |
Definition at line 508 of file audiohook.c.
References ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_audiohook_unlock, ast_channel_lock, ast_channel_unlock, ast_cond_signal(), AST_LIST_REMOVE, ast_channel::audiohooks, chan, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook_list::spy_list, ast_audiohook::status, ast_audiohook::trigger, ast_audiohook::type, and ast_audiohook_list::whisper_list.
Referenced by ast_audiohook_move_by_source().
00509 { 00510 ast_channel_lock(chan); 00511 00512 if (!chan->audiohooks) { 00513 ast_channel_unlock(chan); 00514 return -1; 00515 } 00516 00517 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00518 AST_LIST_REMOVE(&chan->audiohooks->spy_list, audiohook, list); 00519 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00520 AST_LIST_REMOVE(&chan->audiohooks->whisper_list, audiohook, list); 00521 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00522 AST_LIST_REMOVE(&chan->audiohooks->manipulate_list, audiohook, list); 00523 00524 ast_audiohook_lock(audiohook); 00525 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00526 ast_cond_signal(&audiohook->trigger); 00527 ast_audiohook_unlock(audiohook); 00528 00529 ast_channel_unlock(chan); 00530 00531 return 0; 00532 }
void ast_audiohook_trigger_wait | ( | struct ast_audiohook * | audiohook | ) |
Wait for audiohook trigger to be triggered.
audiohook | Audiohook to wait on |
Definition at line 708 of file audiohook.c.
References ast_cond_timedwait(), ast_samp2tv(), ast_tvadd(), ast_tvnow(), ast_audiohook::lock, and ast_audiohook::trigger.
Referenced by ast_audiohook_detach(), and mixmonitor_thread().
00709 { 00710 struct timeval tv; 00711 struct timespec ts; 00712 00713 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 00714 ts.tv_sec = tv.tv_sec; 00715 ts.tv_nsec = tv.tv_usec * 1000; 00716 00717 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts); 00718 00719 return; 00720 }
int ast_audiohook_write_frame | ( | struct ast_audiohook * | audiohook, | |
enum ast_audiohook_direction | direction, | |||
struct ast_frame * | frame | |||
) |
Writes a frame into the audiohook structure.
audiohook | Audiohook structure | |
direction | Direction the audio frame came from | |
frame | Frame to write in |
Definition at line 121 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, AST_AUDIOHOOK_SMALL_QUEUE, AST_AUDIOHOOK_SYNC_TOLERANCE, AST_AUDIOHOOK_TRIGGER_MODE, AST_AUDIOHOOK_TRIGGER_READ, AST_AUDIOHOOK_TRIGGER_SYNC, AST_AUDIOHOOK_TRIGGER_WRITE, ast_cond_signal(), ast_log(), ast_slinfactory_available(), ast_slinfactory_feed(), ast_slinfactory_flush(), ast_test_flag, ast_tvdiff_ms(), ast_tvnow(), LOG_DEBUG, option_debug, ast_audiohook::read_factory, ast_audiohook::read_time, ast_audiohook::trigger, ast_audiohook::write_factory, and ast_audiohook::write_time.
Referenced by audio_audiohook_write_list(), and channel_spy().
00122 { 00123 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00124 struct ast_slinfactory *other_factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->write_factory : &audiohook->read_factory); 00125 struct timeval *time = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_time : &audiohook->write_time), previous_time = *time; 00126 int our_factory_samples; 00127 int our_factory_ms; 00128 int other_factory_samples; 00129 int other_factory_ms; 00130 00131 /* Update last feeding time to be current */ 00132 *time = ast_tvnow(); 00133 00134 our_factory_samples = ast_slinfactory_available(factory); 00135 our_factory_ms = ast_tvdiff_ms(*time, previous_time) + (our_factory_samples / 8); 00136 other_factory_samples = ast_slinfactory_available(other_factory); 00137 other_factory_ms = other_factory_samples / 8; 00138 00139 if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && other_factory_samples && (our_factory_ms - other_factory_ms > AST_AUDIOHOOK_SYNC_TOLERANCE)) { 00140 if (option_debug) 00141 ast_log(LOG_DEBUG, "Flushing audiohook %p so it remains in sync\n", audiohook); 00142 ast_slinfactory_flush(factory); 00143 ast_slinfactory_flush(other_factory); 00144 } 00145 00146 if (ast_test_flag(audiohook, AST_AUDIOHOOK_SMALL_QUEUE) && (our_factory_samples > 640 || other_factory_samples > 640)) { 00147 if (option_debug) { 00148 ast_log(LOG_DEBUG, "Audiohook %p has stale audio in its factories. Flushing them both\n", audiohook); 00149 } 00150 ast_slinfactory_flush(factory); 00151 ast_slinfactory_flush(other_factory); 00152 } 00153 00154 /* Write frame out to respective factory */ 00155 ast_slinfactory_feed(factory, frame); 00156 00157 /* If we need to notify the respective handler of this audiohook, do so */ 00158 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) { 00159 ast_cond_signal(&audiohook->trigger); 00160 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) { 00161 ast_cond_signal(&audiohook->trigger); 00162 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) { 00163 ast_cond_signal(&audiohook->trigger); 00164 } 00165 00166 return 0; 00167 }
struct ast_frame* ast_audiohook_write_list | ( | struct ast_channel * | chan, | |
struct ast_audiohook_list * | audiohook_list, | |||
enum ast_audiohook_direction | direction, | |||
struct ast_frame * | frame | |||
) |
Pass a frame off to be handled by the audiohook core.
chan | Channel that the list is coming off of | |
audiohook_list | List of audiohooks | |
direction | Direction frame is coming in from | |
frame | The frame itself |
Definition at line 693 of file audiohook.c.
References AST_FRAME_DTMF, AST_FRAME_VOICE, audio_audiohook_write_list(), chan, dtmf_audiohook_write_list(), and ast_frame::frametype.
Referenced by __ast_read(), and ast_write().
00694 { 00695 /* Pass off frame to it's respective list write function */ 00696 if (frame->frametype == AST_FRAME_VOICE) 00697 return audio_audiohook_write_list(chan, audiohook_list, direction, frame); 00698 else if (frame->frametype == AST_FRAME_DTMF) 00699 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame); 00700 else 00701 return frame; 00702 }
int ast_channel_audiohook_count_by_source | ( | struct ast_channel * | chan, | |
const char * | source, | |||
enum ast_audiohook_type | type | |||
) |
Find out how many audiohooks from a certain source exist on a given channel, regardless of status.
chan | The channel on which to find the spies | |
source | The audiohook's source | |
type | The type of audiohook |
Definition at line 723 of file audiohook.c.
References AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), ast_channel::audiohooks, chan, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook::source, ast_audiohook_list::spy_list, and ast_audiohook_list::whisper_list.
Referenced by builtin_automixmonitor().
00724 { 00725 int count = 0; 00726 struct ast_audiohook *ah = NULL; 00727 00728 if (!chan->audiohooks) 00729 return -1; 00730 00731 switch (type) { 00732 case AST_AUDIOHOOK_TYPE_SPY: 00733 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->spy_list, ah, list) { 00734 if (!strcmp(ah->source, source)) { 00735 count++; 00736 } 00737 } 00738 AST_LIST_TRAVERSE_SAFE_END; 00739 break; 00740 case AST_AUDIOHOOK_TYPE_WHISPER: 00741 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->whisper_list, ah, list) { 00742 if (!strcmp(ah->source, source)) { 00743 count++; 00744 } 00745 } 00746 AST_LIST_TRAVERSE_SAFE_END; 00747 break; 00748 case AST_AUDIOHOOK_TYPE_MANIPULATE: 00749 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->manipulate_list, ah, list) { 00750 if (!strcmp(ah->source, source)) { 00751 count++; 00752 } 00753 } 00754 AST_LIST_TRAVERSE_SAFE_END; 00755 break; 00756 default: 00757 ast_log(LOG_DEBUG, "Invalid audiohook type supplied, (%d)\n", type); 00758 return -1; 00759 } 00760 00761 return count; 00762 }
int ast_channel_audiohook_count_by_source_running | ( | struct ast_channel * | chan, | |
const char * | source, | |||
enum ast_audiohook_type | type | |||
) |
Find out how many spies of a certain type exist on a given channel, and are in state running.
chan | The channel on which to find the spies | |
source | The source of the audiohook | |
type | The type of spy to look for |
Definition at line 765 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_RUNNING, AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), ast_channel::audiohooks, chan, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook::source, ast_audiohook_list::spy_list, ast_audiohook::status, and ast_audiohook_list::whisper_list.
Referenced by builtin_automixmonitor().
00766 { 00767 int count = 0; 00768 struct ast_audiohook *ah = NULL; 00769 if (!chan->audiohooks) 00770 return -1; 00771 00772 switch (type) { 00773 case AST_AUDIOHOOK_TYPE_SPY: 00774 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->spy_list, ah, list) { 00775 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00776 count++; 00777 } 00778 AST_LIST_TRAVERSE_SAFE_END; 00779 break; 00780 case AST_AUDIOHOOK_TYPE_WHISPER: 00781 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->whisper_list, ah, list) { 00782 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00783 count++; 00784 } 00785 AST_LIST_TRAVERSE_SAFE_END; 00786 break; 00787 case AST_AUDIOHOOK_TYPE_MANIPULATE: 00788 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->manipulate_list, ah, list) { 00789 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00790 count++; 00791 } 00792 AST_LIST_TRAVERSE_SAFE_END; 00793 break; 00794 default: 00795 ast_log(LOG_DEBUG, "Invalid audiohook type supplied, (%d)\n", type); 00796 return -1; 00797 } 00798 return count; 00799 }
static struct ast_frame* audio_audiohook_write_list | ( | struct ast_channel * | chan, | |
struct ast_audiohook_list * | audiohook_list, | |||
enum ast_audiohook_direction | direction, | |||
struct ast_frame * | frame | |||
) | [static] |
Pass an AUDIO frame off to be handled by the audiohook core.
chan | Channel that the list is coming off of | |
audiohook_list | List of audiohooks | |
direction | Direction frame is coming in from | |
frame | The frame itself |
Definition at line 570 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_RUNNING, ast_audiohook_unlock, ast_audiohook_write_frame(), ast_cond_signal(), AST_FORMAT_SLINEAR, ast_frfree, AST_LIST_EMPTY, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_slinear_saturated_add(), ast_slinfactory_available(), ast_slinfactory_read(), ast_translate(), ast_translator_build_path(), ast_translator_free_path(), chan, ast_audiohook_translate::format, ast_audiohook_list::in_translate, ast_audiohook::list, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, ast_audiohook_list::out_translate, ast_frame::samples, ast_audiohook_list::spy_list, ast_audiohook::status, ast_frame::subclass, ast_audiohook_translate::trans_pvt, ast_audiohook::trigger, ast_audiohook_list::whisper_list, and ast_audiohook::write_factory.
Referenced by ast_audiohook_write_list().
00571 { 00572 struct ast_audiohook_translate *in_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->in_translate[0] : &audiohook_list->in_translate[1]); 00573 struct ast_audiohook_translate *out_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->out_translate[0] : &audiohook_list->out_translate[1]); 00574 struct ast_frame *start_frame = frame, *middle_frame = frame, *end_frame = frame; 00575 struct ast_audiohook *audiohook = NULL; 00576 int samples = frame->samples; 00577 00578 /* If the frame coming in is not signed linear we have to send it through the in_translate path */ 00579 if (frame->subclass != AST_FORMAT_SLINEAR) { 00580 if (in_translate->format != frame->subclass) { 00581 if (in_translate->trans_pvt) 00582 ast_translator_free_path(in_translate->trans_pvt); 00583 if (!(in_translate->trans_pvt = ast_translator_build_path(AST_FORMAT_SLINEAR, frame->subclass))) 00584 return frame; 00585 in_translate->format = frame->subclass; 00586 } 00587 if (!(middle_frame = ast_translate(in_translate->trans_pvt, frame, 0))) 00588 return frame; 00589 samples = middle_frame->samples; 00590 } 00591 00592 /* Queue up signed linear frame to each spy */ 00593 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00594 ast_audiohook_lock(audiohook); 00595 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00596 AST_LIST_REMOVE_CURRENT(list); 00597 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00598 ast_cond_signal(&audiohook->trigger); 00599 ast_audiohook_unlock(audiohook); 00600 continue; 00601 } 00602 ast_audiohook_write_frame(audiohook, direction, middle_frame); 00603 ast_audiohook_unlock(audiohook); 00604 } 00605 AST_LIST_TRAVERSE_SAFE_END 00606 00607 /* If this frame is being written out to the channel then we need to use whisper sources */ 00608 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE && !AST_LIST_EMPTY(&audiohook_list->whisper_list)) { 00609 int i = 0; 00610 short read_buf[samples], combine_buf[samples], *data1 = NULL, *data2 = NULL; 00611 memset(&combine_buf, 0, sizeof(combine_buf)); 00612 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00613 ast_audiohook_lock(audiohook); 00614 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00615 AST_LIST_REMOVE_CURRENT(list); 00616 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00617 ast_cond_signal(&audiohook->trigger); 00618 ast_audiohook_unlock(audiohook); 00619 continue; 00620 } 00621 if (ast_slinfactory_available(&audiohook->write_factory) >= samples && ast_slinfactory_read(&audiohook->write_factory, read_buf, samples)) { 00622 /* Take audio from this whisper source and combine it into our main buffer */ 00623 for (i = 0, data1 = combine_buf, data2 = read_buf; i < samples; i++, data1++, data2++) 00624 ast_slinear_saturated_add(data1, data2); 00625 } 00626 ast_audiohook_unlock(audiohook); 00627 } 00628 AST_LIST_TRAVERSE_SAFE_END 00629 /* We take all of the combined whisper sources and combine them into the audio being written out */ 00630 for (i = 0, data1 = middle_frame->data, data2 = combine_buf; i < samples; i++, data1++, data2++) 00631 ast_slinear_saturated_add(data1, data2); 00632 end_frame = middle_frame; 00633 } 00634 00635 /* Pass off frame to manipulate audiohooks */ 00636 if (!AST_LIST_EMPTY(&audiohook_list->manipulate_list)) { 00637 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00638 ast_audiohook_lock(audiohook); 00639 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00640 AST_LIST_REMOVE_CURRENT(list); 00641 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00642 ast_audiohook_unlock(audiohook); 00643 /* We basically drop all of our links to the manipulate audiohook and prod it to do it's own destructive things */ 00644 audiohook->manipulate_callback(audiohook, chan, NULL, direction); 00645 continue; 00646 } 00647 /* Feed in frame to manipulation */ 00648 audiohook->manipulate_callback(audiohook, chan, middle_frame, direction); 00649 ast_audiohook_unlock(audiohook); 00650 } 00651 AST_LIST_TRAVERSE_SAFE_END 00652 end_frame = middle_frame; 00653 } 00654 00655 /* Now we figure out what to do with our end frame (whether to transcode or not) */ 00656 if (middle_frame == end_frame) { 00657 /* Middle frame was modified and became the end frame... let's see if we need to transcode */ 00658 if (end_frame->subclass != start_frame->subclass) { 00659 if (out_translate->format != start_frame->subclass) { 00660 if (out_translate->trans_pvt) 00661 ast_translator_free_path(out_translate->trans_pvt); 00662 if (!(out_translate->trans_pvt = ast_translator_build_path(start_frame->subclass, AST_FORMAT_SLINEAR))) { 00663 /* We can't transcode this... drop our middle frame and return the original */ 00664 ast_frfree(middle_frame); 00665 return start_frame; 00666 } 00667 out_translate->format = start_frame->subclass; 00668 } 00669 /* Transcode from our middle (signed linear) frame to new format of the frame that came in */ 00670 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) { 00671 /* Failed to transcode the frame... drop it and return the original */ 00672 ast_frfree(middle_frame); 00673 return start_frame; 00674 } 00675 /* Here's the scoop... middle frame is no longer of use to us */ 00676 ast_frfree(middle_frame); 00677 } 00678 } else { 00679 /* No frame was modified, we can just drop our middle frame and pass the frame we got in out */ 00680 ast_frfree(middle_frame); 00681 } 00682 00683 return end_frame; 00684 }
static struct ast_frame* audiohook_read_frame_both | ( | struct ast_audiohook * | audiohook, | |
size_t | samples | |||
) | [static] |
Definition at line 197 of file audiohook.c.
References ast_debug, AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_log(), ast_slinear_saturated_divide(), ast_slinear_saturated_multiply(), ast_slinfactory_available(), ast_slinfactory_read(), ast_tvdiff_ms(), ast_tvnow(), ast_frame::frametype, LOG_DEBUG, option_debug, ast_audiohook::options, ast_audiohook::read_factory, ast_audiohook::read_time, ast_audiohook_options::read_volume, ast_audiohook::write_factory, ast_audiohook::write_time, and ast_audiohook_options::write_volume.
Referenced by ast_audiohook_read_frame().
00198 { 00199 int i = 0, usable_read, usable_write; 00200 short buf1[samples], buf2[samples], *read_buf = NULL, *write_buf = NULL, *final_buf = NULL, *data1 = NULL, *data2 = NULL; 00201 struct ast_frame frame = { 00202 .frametype = AST_FRAME_VOICE, 00203 .subclass = AST_FORMAT_SLINEAR, 00204 .data = NULL, 00205 .datalen = sizeof(buf1), 00206 .samples = samples, 00207 }; 00208 00209 /* Make sure both factories have the required samples */ 00210 usable_read = (ast_slinfactory_available(&audiohook->read_factory) >= samples ? 1 : 0); 00211 usable_write = (ast_slinfactory_available(&audiohook->write_factory) >= samples ? 1 : 0); 00212 00213 if (!usable_read && !usable_write) { 00214 /* If both factories are unusable bail out */ 00215 ast_debug(1, "Read factory %p and write factory %p both fail to provide %zd samples\n", &audiohook->read_factory, &audiohook->write_factory, samples); 00216 return NULL; 00217 } 00218 00219 /* If we want to provide only a read factory make sure we aren't waiting for other audio */ 00220 if (usable_read && !usable_write && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) { 00221 ast_debug(3, "Write factory %p was pretty quick last time, waiting for them.\n", &audiohook->write_factory); 00222 return NULL; 00223 } 00224 00225 /* If we want to provide only a write factory make sure we aren't waiting for other audio */ 00226 if (usable_write && !usable_read && (ast_tvdiff_ms(ast_tvnow(), audiohook->read_time) < (samples/8)*2)) { 00227 ast_debug(3, "Read factory %p was pretty quick last time, waiting for them.\n", &audiohook->read_factory); 00228 return NULL; 00229 } 00230 00231 /* Start with the read factory... if there are enough samples, read them in */ 00232 if (usable_read) { 00233 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) { 00234 read_buf = buf1; 00235 /* Adjust read volume if need be */ 00236 if (audiohook->options.read_volume) { 00237 int count = 0; 00238 short adjust_value = abs(audiohook->options.read_volume); 00239 for (count = 0; count < samples; count++) { 00240 if (audiohook->options.read_volume > 0) 00241 ast_slinear_saturated_multiply(&buf1[count], &adjust_value); 00242 else if (audiohook->options.read_volume < 0) 00243 ast_slinear_saturated_divide(&buf1[count], &adjust_value); 00244 } 00245 } 00246 } 00247 } else if (option_debug) 00248 ast_log(LOG_DEBUG, "Failed to get %d samples from read factory %p\n", (int)samples, &audiohook->read_factory); 00249 00250 /* Move on to the write factory... if there are enough samples, read them in */ 00251 if (usable_write) { 00252 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) { 00253 write_buf = buf2; 00254 /* Adjust write volume if need be */ 00255 if (audiohook->options.write_volume) { 00256 int count = 0; 00257 short adjust_value = abs(audiohook->options.write_volume); 00258 for (count = 0; count < samples; count++) { 00259 if (audiohook->options.write_volume > 0) 00260 ast_slinear_saturated_multiply(&buf2[count], &adjust_value); 00261 else if (audiohook->options.write_volume < 0) 00262 ast_slinear_saturated_divide(&buf2[count], &adjust_value); 00263 } 00264 } 00265 } 00266 } else if (option_debug) 00267 ast_log(LOG_DEBUG, "Failed to get %d samples from write factory %p\n", (int)samples, &audiohook->write_factory); 00268 00269 /* Basically we figure out which buffer to use... and if mixing can be done here */ 00270 if (!read_buf && !write_buf) 00271 return NULL; 00272 else if (read_buf && write_buf) { 00273 for (i = 0, data1 = read_buf, data2 = write_buf; i < samples; i++, data1++, data2++) 00274 ast_slinear_saturated_add(data1, data2); 00275 final_buf = buf1; 00276 } else if (read_buf) 00277 final_buf = buf1; 00278 else if (write_buf) 00279 final_buf = buf2; 00280 00281 /* Make the final buffer part of the frame, so it gets duplicated fine */ 00282 frame.data = final_buf; 00283 00284 /* Yahoo, a combined copy of the audio! */ 00285 return ast_frdup(&frame); 00286 }
static struct ast_frame* audiohook_read_frame_single | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Definition at line 169 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_FORMAT_SLINEAR, ast_frame_adjust_volume(), AST_FRAME_VOICE, ast_frdup(), ast_slinfactory_available(), ast_slinfactory_read(), buf, ast_frame::frametype, ast_audiohook::options, ast_audiohook::read_factory, ast_audiohook_options::read_volume, ast_audiohook::write_factory, and ast_audiohook_options::write_volume.
Referenced by ast_audiohook_read_frame().
00170 { 00171 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00172 int vol = (direction == AST_AUDIOHOOK_DIRECTION_READ ? audiohook->options.read_volume : audiohook->options.write_volume); 00173 short buf[samples]; 00174 struct ast_frame frame = { 00175 .frametype = AST_FRAME_VOICE, 00176 .subclass = AST_FORMAT_SLINEAR, 00177 .data = buf, 00178 .datalen = sizeof(buf), 00179 .samples = samples, 00180 }; 00181 00182 /* Ensure the factory is able to give us the samples we want */ 00183 if (samples > ast_slinfactory_available(factory)) 00184 return NULL; 00185 00186 /* Read data in from factory */ 00187 if (!ast_slinfactory_read(factory, buf, samples)) 00188 return NULL; 00189 00190 /* If a volume adjustment needs to be applied apply it */ 00191 if (vol) 00192 ast_frame_adjust_volume(&frame, vol); 00193 00194 return ast_frdup(&frame); 00195 }
static struct ast_frame* dtmf_audiohook_write_list | ( | struct ast_channel * | chan, | |
struct ast_audiohook_list * | audiohook_list, | |||
enum ast_audiohook_direction | direction, | |||
struct ast_frame * | frame | |||
) | [static] |
Pass a DTMF frame off to be handled by the audiohook core.
chan | Channel that the list is coming off of | |
audiohook_list | List of audiohooks | |
direction | Direction frame is coming in from | |
frame | The frame itself |
Definition at line 541 of file audiohook.c.
References ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_RUNNING, ast_audiohook_unlock, AST_AUDIOHOOK_WANTS_DTMF, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_test_flag, chan, ast_audiohook::list, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, and ast_audiohook::status.
Referenced by ast_audiohook_write_list().
00542 { 00543 struct ast_audiohook *audiohook = NULL; 00544 00545 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00546 ast_audiohook_lock(audiohook); 00547 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00548 AST_LIST_REMOVE_CURRENT(list); 00549 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00550 ast_audiohook_unlock(audiohook); 00551 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00552 continue; 00553 } 00554 if (ast_test_flag(audiohook, AST_AUDIOHOOK_WANTS_DTMF)) 00555 audiohook->manipulate_callback(audiohook, chan, frame, direction); 00556 ast_audiohook_unlock(audiohook); 00557 } 00558 AST_LIST_TRAVERSE_SAFE_END; 00559 00560 return frame; 00561 }
static struct ast_audiohook* find_audiohook_by_source | ( | struct ast_audiohook_list * | audiohook_list, | |
const char * | source | |||
) | [static] |
find an audiohook based on its source
audiohook_list | The list of audiohooks to search in | |
source | The source of the audiohook we wish to find |
Definition at line 430 of file audiohook.c.
References AST_LIST_TRAVERSE, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook::source, ast_audiohook_list::spy_list, and ast_audiohook_list::whisper_list.
Referenced by ast_audiohook_detach_source(), and ast_audiohook_move_by_source().
00431 { 00432 struct ast_audiohook *audiohook = NULL; 00433 00434 AST_LIST_TRAVERSE(&audiohook_list->spy_list, audiohook, list) { 00435 if (!strcasecmp(audiohook->source, source)) 00436 return audiohook; 00437 } 00438 00439 AST_LIST_TRAVERSE(&audiohook_list->whisper_list, audiohook, list) { 00440 if (!strcasecmp(audiohook->source, source)) 00441 return audiohook; 00442 } 00443 00444 AST_LIST_TRAVERSE(&audiohook_list->manipulate_list, audiohook, list) { 00445 if (!strcasecmp(audiohook->source, source)) 00446 return audiohook; 00447 } 00448 00449 return NULL; 00450 }