#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/options.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. | |
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) |
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 331 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, 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(), start_spying(), and startmon().
00332 { 00333 ast_channel_lock(chan); 00334 00335 if (!chan->audiohooks) { 00336 /* Whoops... allocate a new structure */ 00337 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) { 00338 ast_channel_unlock(chan); 00339 return -1; 00340 } 00341 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list); 00342 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list); 00343 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list); 00344 } 00345 00346 /* Drop into respective list */ 00347 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00348 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list); 00349 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00350 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list); 00351 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00352 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list); 00353 00354 /* Change status over to running since it is now attached */ 00355 audiohook->status = AST_AUDIOHOOK_STATUS_RUNNING; 00356 00357 ast_channel_unlock(chan); 00358 00359 return 0; 00360 }
int ast_audiohook_destroy | ( | struct ast_audiohook * | audiohook | ) |
Destroys an audiohook structure.
audiohook | Audiohook structure |
Definition at line 98 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(), launch_monitor_thread(), and mixmonitor_thread().
00099 { 00100 /* Drop the factories used by this audiohook type */ 00101 switch (audiohook->type) { 00102 case AST_AUDIOHOOK_TYPE_SPY: 00103 ast_slinfactory_destroy(&audiohook->read_factory); 00104 case AST_AUDIOHOOK_TYPE_WHISPER: 00105 ast_slinfactory_destroy(&audiohook->write_factory); 00106 break; 00107 default: 00108 break; 00109 } 00110 00111 /* Destroy translation path if present */ 00112 if (audiohook->trans_pvt) 00113 ast_translator_free_path(audiohook->trans_pvt); 00114 00115 /* Lock and trigger be gone! */ 00116 ast_cond_destroy(&audiohook->trigger); 00117 ast_mutex_destroy(&audiohook->lock); 00118 00119 return 0; 00120 }
int ast_audiohook_detach | ( | struct ast_audiohook * | audiohook | ) |
Detach audiohook from channel.
audiohook | Audiohook structure |
Definition at line 366 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(), and mixmonitor_thread().
00367 { 00368 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00369 return 0; 00370 00371 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00372 00373 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00374 ast_audiohook_trigger_wait(audiohook); 00375 00376 return 0; 00377 }
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 383 of file audiohook.c.
References ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, ast_audiohook_unlock, ast_cond_signal(), ast_free, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_translator_free_path(), ast_audiohook_list::in_translate, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, ast_audiohook_list::out_translate, ast_audiohook_list::spy_list, ast_audiohook::status, ast_audiohook_translate::trans_pvt, ast_audiohook::trigger, and ast_audiohook_list::whisper_list.
Referenced by ast_hangup().
00384 { 00385 int i = 0; 00386 struct ast_audiohook *audiohook = NULL; 00387 00388 /* Drop any spies */ 00389 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00390 ast_audiohook_lock(audiohook); 00391 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_list, list); 00392 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00393 ast_cond_signal(&audiohook->trigger); 00394 ast_audiohook_unlock(audiohook); 00395 } 00396 AST_LIST_TRAVERSE_SAFE_END 00397 00398 /* Drop any whispering sources */ 00399 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00400 ast_audiohook_lock(audiohook); 00401 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list); 00402 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00403 ast_cond_signal(&audiohook->trigger); 00404 ast_audiohook_unlock(audiohook); 00405 } 00406 AST_LIST_TRAVERSE_SAFE_END 00407 00408 /* Drop any manipulaters */ 00409 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00410 ast_audiohook_lock(audiohook); 00411 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00412 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00413 ast_audiohook_unlock(audiohook); 00414 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00415 } 00416 AST_LIST_TRAVERSE_SAFE_END 00417 00418 /* Drop translation paths if present */ 00419 for (i = 0; i < 2; i++) { 00420 if (audiohook_list->in_translate[i].trans_pvt) 00421 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt); 00422 if (audiohook_list->out_translate[i].trans_pvt) 00423 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt); 00424 } 00425 00426 /* Free ourselves */ 00427 ast_free(audiohook_list); 00428 00429 return 0; 00430 }
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 478 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_SHUTDOWN, ast_channel_lock, ast_channel_unlock, ast_channel::audiohooks, find_audiohook_by_source(), and ast_audiohook::status.
Referenced by mixmonitor_cli(), and stop_mixmonitor_exec().
00479 { 00480 struct ast_audiohook *audiohook = NULL; 00481 00482 ast_channel_lock(chan); 00483 00484 /* Ensure the channel has audiohooks on it */ 00485 if (!chan->audiohooks) { 00486 ast_channel_unlock(chan); 00487 return -1; 00488 } 00489 00490 audiohook = find_audiohook_by_source(chan->audiohooks, source); 00491 00492 ast_channel_unlock(chan); 00493 00494 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00495 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00496 00497 return (audiohook ? 0 : -1); 00498 }
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 67 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(), and launch_monitor_thread().
00068 { 00069 /* Need to keep the type and source */ 00070 audiohook->type = type; 00071 audiohook->source = source; 00072 00073 /* Initialize lock that protects our audiohook */ 00074 ast_mutex_init(&audiohook->lock); 00075 ast_cond_init(&audiohook->trigger, NULL); 00076 00077 /* Setup the factories that are needed for this audiohook type */ 00078 switch (type) { 00079 case AST_AUDIOHOOK_TYPE_SPY: 00080 ast_slinfactory_init(&audiohook->read_factory); 00081 case AST_AUDIOHOOK_TYPE_WHISPER: 00082 ast_slinfactory_init(&audiohook->write_factory); 00083 break; 00084 default: 00085 break; 00086 } 00087 00088 /* Since we are just starting out... this audiohook is new */ 00089 audiohook->status = AST_AUDIOHOOK_STATUS_NEW; 00090 00091 return 0; 00092 }
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 454 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().
00455 { 00456 struct ast_audiohook *audiohook = find_audiohook_by_source(old_chan->audiohooks, source); 00457 00458 if (!audiohook) { 00459 return; 00460 } 00461 00462 /* By locking both channels and the audiohook, we can assure that 00463 * another thread will not have a chance to read the audiohook's status 00464 * as done, even though ast_audiohook_remove signals the trigger 00465 * condition 00466 */ 00467 ast_audiohook_lock(audiohook); 00468 ast_audiohook_remove(old_chan, audiohook); 00469 ast_audiohook_attach(new_chan, audiohook); 00470 ast_audiohook_unlock(audiohook); 00471 }
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 296 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().
00297 { 00298 struct ast_frame *read_frame = NULL, *final_frame = NULL; 00299 00300 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction)))) 00301 return NULL; 00302 00303 /* If they don't want signed linear back out, we'll have to send it through the translation path */ 00304 if (format != AST_FORMAT_SLINEAR) { 00305 /* Rebuild translation path if different format then previously */ 00306 if (audiohook->format != format) { 00307 if (audiohook->trans_pvt) { 00308 ast_translator_free_path(audiohook->trans_pvt); 00309 audiohook->trans_pvt = NULL; 00310 } 00311 /* 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 */ 00312 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) { 00313 ast_frfree(read_frame); 00314 return NULL; 00315 } 00316 } 00317 /* Convert to requested format, and allow the read in frame to be freed */ 00318 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1); 00319 } else { 00320 final_frame = read_frame; 00321 } 00322 00323 return final_frame; 00324 }
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 510 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, 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().
00511 { 00512 ast_channel_lock(chan); 00513 00514 if (!chan->audiohooks) { 00515 ast_channel_unlock(chan); 00516 return -1; 00517 } 00518 00519 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00520 AST_LIST_REMOVE(&chan->audiohooks->spy_list, audiohook, list); 00521 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00522 AST_LIST_REMOVE(&chan->audiohooks->whisper_list, audiohook, list); 00523 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00524 AST_LIST_REMOVE(&chan->audiohooks->manipulate_list, audiohook, list); 00525 00526 ast_audiohook_lock(audiohook); 00527 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00528 ast_cond_signal(&audiohook->trigger); 00529 ast_audiohook_unlock(audiohook); 00530 00531 ast_channel_unlock(chan); 00532 00533 return 0; 00534 }
void ast_audiohook_trigger_wait | ( | struct ast_audiohook * | audiohook | ) |
Wait for audiohook trigger to be triggered.
audiohook | Audiohook to wait on |
Definition at line 709 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().
00710 { 00711 struct timeval tv; 00712 struct timespec ts; 00713 00714 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 00715 ts.tv_sec = tv.tv_sec; 00716 ts.tv_nsec = tv.tv_usec * 1000; 00717 00718 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts); 00719 00720 return; 00721 }
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 128 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, 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().
00129 { 00130 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00131 struct ast_slinfactory *other_factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->write_factory : &audiohook->read_factory); 00132 struct timeval *time = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_time : &audiohook->write_time), previous_time = *time; 00133 int our_factory_ms; 00134 int other_factory_samples; 00135 int other_factory_ms; 00136 00137 /* Update last feeding time to be current */ 00138 *time = ast_tvnow(); 00139 00140 our_factory_ms = ast_tvdiff_ms(*time, previous_time) + (ast_slinfactory_available(factory) / 8); 00141 other_factory_samples = ast_slinfactory_available(other_factory); 00142 other_factory_ms = other_factory_samples / 8; 00143 00144 /* If we are using a sync trigger and this factory suddenly got audio fed in after a lapse, then flush both factories to ensure they remain in sync */ 00145 if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && other_factory_samples && (our_factory_ms - other_factory_ms > AST_AUDIOHOOK_SYNC_TOLERANCE)) { 00146 if (option_debug) 00147 ast_log(LOG_DEBUG, "Flushing audiohook %p so it remains in sync\n", audiohook); 00148 ast_slinfactory_flush(factory); 00149 ast_slinfactory_flush(other_factory); 00150 } 00151 00152 /* Write frame out to respective factory */ 00153 ast_slinfactory_feed(factory, frame); 00154 00155 /* If we need to notify the respective handler of this audiohook, do so */ 00156 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) { 00157 ast_cond_signal(&audiohook->trigger); 00158 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) { 00159 ast_cond_signal(&audiohook->trigger); 00160 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) { 00161 ast_cond_signal(&audiohook->trigger); 00162 } 00163 00164 return 0; 00165 }
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 694 of file audiohook.c.
References AST_FRAME_DTMF, AST_FRAME_VOICE, audio_audiohook_write_list(), dtmf_audiohook_write_list(), and ast_frame::frametype.
Referenced by __ast_read(), and ast_write().
00695 { 00696 /* Pass off frame to it's respective list write function */ 00697 if (frame->frametype == AST_FRAME_VOICE) 00698 return audio_audiohook_write_list(chan, audiohook_list, direction, frame); 00699 else if (frame->frametype == AST_FRAME_DTMF) 00700 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame); 00701 else 00702 return frame; 00703 }
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 572 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(), ast_audiohook_translate::format, ast_audiohook_list::in_translate, 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().
00573 { 00574 struct ast_audiohook_translate *in_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->in_translate[0] : &audiohook_list->in_translate[1]); 00575 struct ast_audiohook_translate *out_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->out_translate[0] : &audiohook_list->out_translate[1]); 00576 struct ast_frame *start_frame = frame, *middle_frame = frame, *end_frame = frame; 00577 struct ast_audiohook *audiohook = NULL; 00578 int samples = frame->samples; 00579 00580 /* If the frame coming in is not signed linear we have to send it through the in_translate path */ 00581 if (frame->subclass != AST_FORMAT_SLINEAR) { 00582 if (in_translate->format != frame->subclass) { 00583 if (in_translate->trans_pvt) 00584 ast_translator_free_path(in_translate->trans_pvt); 00585 if (!(in_translate->trans_pvt = ast_translator_build_path(AST_FORMAT_SLINEAR, frame->subclass))) 00586 return frame; 00587 in_translate->format = frame->subclass; 00588 } 00589 if (!(middle_frame = ast_translate(in_translate->trans_pvt, frame, 0))) 00590 return frame; 00591 } 00592 00593 /* Queue up signed linear frame to each spy */ 00594 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00595 ast_audiohook_lock(audiohook); 00596 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00597 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_list, list); 00598 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00599 ast_cond_signal(&audiohook->trigger); 00600 ast_audiohook_unlock(audiohook); 00601 continue; 00602 } 00603 ast_audiohook_write_frame(audiohook, direction, middle_frame); 00604 ast_audiohook_unlock(audiohook); 00605 } 00606 AST_LIST_TRAVERSE_SAFE_END 00607 00608 /* If this frame is being written out to the channel then we need to use whisper sources */ 00609 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE && !AST_LIST_EMPTY(&audiohook_list->whisper_list)) { 00610 int i = 0; 00611 short read_buf[samples], combine_buf[samples], *data1 = NULL, *data2 = NULL; 00612 memset(&combine_buf, 0, sizeof(combine_buf)); 00613 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00614 ast_audiohook_lock(audiohook); 00615 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00616 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list); 00617 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00618 ast_cond_signal(&audiohook->trigger); 00619 ast_audiohook_unlock(audiohook); 00620 continue; 00621 } 00622 if (ast_slinfactory_available(&audiohook->write_factory) >= samples && ast_slinfactory_read(&audiohook->write_factory, read_buf, samples)) { 00623 /* Take audio from this whisper source and combine it into our main buffer */ 00624 for (i = 0, data1 = combine_buf, data2 = read_buf; i < samples; i++, data1++, data2++) 00625 ast_slinear_saturated_add(data1, data2); 00626 } 00627 ast_audiohook_unlock(audiohook); 00628 } 00629 AST_LIST_TRAVERSE_SAFE_END 00630 /* We take all of the combined whisper sources and combine them into the audio being written out */ 00631 for (i = 0, data1 = middle_frame->data, data2 = combine_buf; i < samples; i++, data1++, data2++) 00632 ast_slinear_saturated_add(data1, data2); 00633 end_frame = middle_frame; 00634 } 00635 00636 /* Pass off frame to manipulate audiohooks */ 00637 if (!AST_LIST_EMPTY(&audiohook_list->manipulate_list)) { 00638 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00639 ast_audiohook_lock(audiohook); 00640 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00641 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00642 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00643 ast_audiohook_unlock(audiohook); 00644 /* We basically drop all of our links to the manipulate audiohook and prod it to do it's own destructive things */ 00645 audiohook->manipulate_callback(audiohook, chan, NULL, direction); 00646 continue; 00647 } 00648 /* Feed in frame to manipulation */ 00649 audiohook->manipulate_callback(audiohook, chan, middle_frame, direction); 00650 ast_audiohook_unlock(audiohook); 00651 } 00652 AST_LIST_TRAVERSE_SAFE_END 00653 end_frame = middle_frame; 00654 } 00655 00656 /* Now we figure out what to do with our end frame (whether to transcode or not) */ 00657 if (middle_frame == end_frame) { 00658 /* Middle frame was modified and became the end frame... let's see if we need to transcode */ 00659 if (end_frame->subclass != start_frame->subclass) { 00660 if (out_translate->format != start_frame->subclass) { 00661 if (out_translate->trans_pvt) 00662 ast_translator_free_path(out_translate->trans_pvt); 00663 if (!(out_translate->trans_pvt = ast_translator_build_path(start_frame->subclass, AST_FORMAT_SLINEAR))) { 00664 /* We can't transcode this... drop our middle frame and return the original */ 00665 ast_frfree(middle_frame); 00666 return start_frame; 00667 } 00668 out_translate->format = start_frame->subclass; 00669 } 00670 /* Transcode from our middle (signed linear) frame to new format of the frame that came in */ 00671 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) { 00672 /* Failed to transcode the frame... drop it and return the original */ 00673 ast_frfree(middle_frame); 00674 return start_frame; 00675 } 00676 /* Here's the scoop... middle frame is no longer of use to us */ 00677 ast_frfree(middle_frame); 00678 } 00679 } else { 00680 /* No frame was modified, we can just drop our middle frame and pass the frame we got in out */ 00681 ast_frfree(middle_frame); 00682 } 00683 00684 return end_frame; 00685 }
static struct ast_frame* audiohook_read_frame_both | ( | struct ast_audiohook * | audiohook, | |
size_t | samples | |||
) | [static] |
Definition at line 195 of file audiohook.c.
References 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().
00196 { 00197 int i = 0, usable_read, usable_write; 00198 short buf1[samples], buf2[samples], *read_buf = NULL, *write_buf = NULL, *final_buf = NULL, *data1 = NULL, *data2 = NULL; 00199 struct ast_frame frame = { 00200 .frametype = AST_FRAME_VOICE, 00201 .subclass = AST_FORMAT_SLINEAR, 00202 .data = NULL, 00203 .datalen = sizeof(buf1), 00204 .samples = samples, 00205 }; 00206 00207 /* Make sure both factories have the required samples */ 00208 usable_read = (ast_slinfactory_available(&audiohook->read_factory) >= samples ? 1 : 0); 00209 usable_write = (ast_slinfactory_available(&audiohook->write_factory) >= samples ? 1 : 0); 00210 00211 if (!usable_read && !usable_write) { 00212 /* If both factories are unusable bail out */ 00213 if (option_debug) 00214 ast_log(LOG_DEBUG, "Read factory %p and write factory %p both fail to provide %zd samples\n", &audiohook->read_factory, &audiohook->write_factory, samples); 00215 return NULL; 00216 } 00217 00218 /* If we want to provide only a read factory make sure we aren't waiting for other audio */ 00219 if (usable_read && !usable_write && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) { 00220 if (option_debug > 2) 00221 ast_log(LOG_DEBUG, "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 if (option_debug > 2) 00228 ast_log(LOG_DEBUG, "Read factory %p was pretty quick last time, waiting for them.\n", &audiohook->read_factory); 00229 return NULL; 00230 } 00231 00232 /* Start with the read factory... if there are enough samples, read them in */ 00233 if (usable_read) { 00234 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) { 00235 read_buf = buf1; 00236 /* Adjust read volume if need be */ 00237 if (audiohook->options.read_volume) { 00238 int count = 0; 00239 short adjust_value = abs(audiohook->options.read_volume); 00240 for (count = 0; count < samples; count++) { 00241 if (audiohook->options.read_volume > 0) 00242 ast_slinear_saturated_multiply(&buf1[count], &adjust_value); 00243 else if (audiohook->options.read_volume < 0) 00244 ast_slinear_saturated_divide(&buf1[count], &adjust_value); 00245 } 00246 } 00247 } 00248 } else if (option_debug) 00249 ast_log(LOG_DEBUG, "Failed to get %zd samples from read factory %p\n", samples, &audiohook->read_factory); 00250 00251 /* Move on to the write factory... if there are enough samples, read them in */ 00252 if (usable_write) { 00253 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) { 00254 write_buf = buf2; 00255 /* Adjust write volume if need be */ 00256 if (audiohook->options.write_volume) { 00257 int count = 0; 00258 short adjust_value = abs(audiohook->options.write_volume); 00259 for (count = 0; count < samples; count++) { 00260 if (audiohook->options.write_volume > 0) 00261 ast_slinear_saturated_multiply(&buf2[count], &adjust_value); 00262 else if (audiohook->options.write_volume < 0) 00263 ast_slinear_saturated_divide(&buf2[count], &adjust_value); 00264 } 00265 } 00266 } 00267 } else if (option_debug) 00268 ast_log(LOG_DEBUG, "Failed to get %zd samples from write factory %p\n", samples, &audiohook->write_factory); 00269 00270 /* Basically we figure out which buffer to use... and if mixing can be done here */ 00271 if (!read_buf && !write_buf) 00272 return NULL; 00273 else if (read_buf && write_buf) { 00274 for (i = 0, data1 = read_buf, data2 = write_buf; i < samples; i++, data1++, data2++) 00275 ast_slinear_saturated_add(data1, data2); 00276 final_buf = buf1; 00277 } else if (read_buf) 00278 final_buf = buf1; 00279 else if (write_buf) 00280 final_buf = buf2; 00281 00282 /* Make the final buffer part of the frame, so it gets duplicated fine */ 00283 frame.data = final_buf; 00284 00285 /* Yahoo, a combined copy of the audio! */ 00286 return ast_frdup(&frame); 00287 }
static struct ast_frame* audiohook_read_frame_single | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Definition at line 167 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(), 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().
00168 { 00169 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00170 int vol = (direction == AST_AUDIOHOOK_DIRECTION_READ ? audiohook->options.read_volume : audiohook->options.write_volume); 00171 short buf[samples]; 00172 struct ast_frame frame = { 00173 .frametype = AST_FRAME_VOICE, 00174 .subclass = AST_FORMAT_SLINEAR, 00175 .data = buf, 00176 .datalen = sizeof(buf), 00177 .samples = samples, 00178 }; 00179 00180 /* Ensure the factory is able to give us the samples we want */ 00181 if (samples > ast_slinfactory_available(factory)) 00182 return NULL; 00183 00184 /* Read data in from factory */ 00185 if (!ast_slinfactory_read(factory, buf, samples)) 00186 return NULL; 00187 00188 /* If a volume adjustment needs to be applied apply it */ 00189 if (vol) 00190 ast_frame_adjust_volume(&frame, vol); 00191 00192 return ast_frdup(&frame); 00193 }
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 543 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, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, and ast_audiohook::status.
Referenced by ast_audiohook_write_list().
00544 { 00545 struct ast_audiohook *audiohook = NULL; 00546 00547 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00548 ast_audiohook_lock(audiohook); 00549 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00550 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00551 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00552 ast_audiohook_unlock(audiohook); 00553 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00554 continue; 00555 } 00556 if (ast_test_flag(audiohook, AST_AUDIOHOOK_WANTS_DTMF)) 00557 audiohook->manipulate_callback(audiohook, chan, frame, direction); 00558 ast_audiohook_unlock(audiohook); 00559 } 00560 AST_LIST_TRAVERSE_SAFE_END 00561 00562 return frame; 00563 }
static struct ast_audiohook* find_audiohook_by_source | ( | struct ast_audiohook_list * | audiohook_list, | |
const char * | source | |||
) | [static] |
Definition at line 432 of file audiohook.c.
References AST_LIST_TRAVERSE, 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().
00433 { 00434 struct ast_audiohook *audiohook = NULL; 00435 00436 AST_LIST_TRAVERSE(&audiohook_list->spy_list, audiohook, list) { 00437 if (!strcasecmp(audiohook->source, source)) 00438 return audiohook; 00439 } 00440 00441 AST_LIST_TRAVERSE(&audiohook_list->whisper_list, audiohook, list) { 00442 if (!strcasecmp(audiohook->source, source)) 00443 return audiohook; 00444 } 00445 00446 AST_LIST_TRAVERSE(&audiohook_list->manipulate_list, audiohook, list) { 00447 if (!strcasecmp(audiohook->source, source)) 00448 return audiohook; 00449 } 00450 00451 return NULL; 00452 }