#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"
Include dependency graph for audiohook.c:
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. | |
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. | |
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 315 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::status, and ast_audiohook::type.
Referenced by start_spying(), and startmon().
00316 { 00317 ast_channel_lock(chan); 00318 00319 if (!chan->audiohooks) { 00320 /* Whoops... allocate a new structure */ 00321 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) { 00322 ast_channel_unlock(chan); 00323 return -1; 00324 } 00325 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list); 00326 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list); 00327 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list); 00328 } 00329 00330 /* Drop into respective list */ 00331 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00332 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list); 00333 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00334 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list); 00335 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00336 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list); 00337 00338 /* Change status over to running since it is now attached */ 00339 audiohook->status = AST_AUDIOHOOK_STATUS_RUNNING; 00340 00341 ast_channel_unlock(chan); 00342 00343 return 0; 00344 }
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 350 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().
00351 { 00352 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00353 return 0; 00354 00355 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00356 00357 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00358 ast_audiohook_trigger_wait(audiohook); 00359 00360 return 0; 00361 }
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 367 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::out_translate, ast_audiohook::status, ast_audiohook_translate::trans_pvt, and ast_audiohook::trigger.
Referenced by ast_hangup().
00368 { 00369 int i = 0; 00370 struct ast_audiohook *audiohook = NULL; 00371 00372 /* Drop any spies */ 00373 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00374 ast_audiohook_lock(audiohook); 00375 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_list, list); 00376 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00377 ast_cond_signal(&audiohook->trigger); 00378 ast_audiohook_unlock(audiohook); 00379 } 00380 AST_LIST_TRAVERSE_SAFE_END 00381 00382 /* Drop any whispering sources */ 00383 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00384 ast_audiohook_lock(audiohook); 00385 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list); 00386 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00387 ast_cond_signal(&audiohook->trigger); 00388 ast_audiohook_unlock(audiohook); 00389 } 00390 AST_LIST_TRAVERSE_SAFE_END 00391 00392 /* Drop any manipulaters */ 00393 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00394 ast_audiohook_lock(audiohook); 00395 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00396 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00397 ast_audiohook_unlock(audiohook); 00398 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00399 } 00400 AST_LIST_TRAVERSE_SAFE_END 00401 00402 /* Drop translation paths if present */ 00403 for (i = 0; i < 2; i++) { 00404 if (audiohook_list->in_translate[i].trans_pvt) 00405 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt); 00406 if (audiohook_list->out_translate[i].trans_pvt) 00407 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt); 00408 } 00409 00410 /* Free ourselves */ 00411 ast_free(audiohook_list); 00412 00413 return 0; 00414 }
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 443 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().
00444 { 00445 struct ast_audiohook *audiohook = NULL; 00446 00447 ast_channel_lock(chan); 00448 00449 /* Ensure the channel has audiohooks on it */ 00450 if (!chan->audiohooks) { 00451 ast_channel_unlock(chan); 00452 return -1; 00453 } 00454 00455 audiohook = find_audiohook_by_source(chan->audiohooks, source); 00456 00457 ast_channel_unlock(chan); 00458 00459 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00460 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00461 00462 return (audiohook ? 0 : -1); 00463 }
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 }
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 280 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().
00281 { 00282 struct ast_frame *read_frame = NULL, *final_frame = NULL; 00283 00284 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction)))) 00285 return NULL; 00286 00287 /* If they don't want signed linear back out, we'll have to send it through the translation path */ 00288 if (format != AST_FORMAT_SLINEAR) { 00289 /* Rebuild translation path if different format then previously */ 00290 if (audiohook->format != format) { 00291 if (audiohook->trans_pvt) { 00292 ast_translator_free_path(audiohook->trans_pvt); 00293 audiohook->trans_pvt = NULL; 00294 } 00295 /* 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 */ 00296 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) { 00297 ast_frfree(read_frame); 00298 return NULL; 00299 } 00300 } 00301 /* Convert to requested format, and allow the read in frame to be freed */ 00302 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1); 00303 } else { 00304 final_frame = read_frame; 00305 } 00306 00307 return final_frame; 00308 }
void ast_audiohook_trigger_wait | ( | struct ast_audiohook * | audiohook | ) |
Wait for audiohook trigger to be triggered.
audiohook | Audiohook to wait on |
Definition at line 638 of file audiohook.c.
References ast_cond_timedwait(), ast_tvadd(), ast_audiohook::lock, and ast_audiohook::trigger.
Referenced by ast_audiohook_detach(), and mixmonitor_thread().
00639 { 00640 struct timeval tv; 00641 struct timespec ts; 00642 00643 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 00644 ts.tv_sec = tv.tv_sec; 00645 ts.tv_nsec = tv.tv_usec * 1000; 00646 00647 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts); 00648 00649 return; 00650 }
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_TRIGGER_MODE, AST_AUDIOHOOK_TRIGGER_READ, AST_AUDIOHOOK_TRIGGER_SYNC, AST_AUDIOHOOK_TRIGGER_WRITE, ast_cond_signal(), ast_slinfactory_feed(), ast_test_flag, 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 timeval *time = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_time : &audiohook->write_time); 00132 00133 /* Write frame out to respective factory */ 00134 ast_slinfactory_feed(factory, frame); 00135 00136 /* Update last fed time for the above factory */ 00137 *time = ast_tvnow(); 00138 00139 /* If we need to notify the respective handler of this audiohook, do so */ 00140 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) { 00141 ast_cond_signal(&audiohook->trigger); 00142 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) { 00143 ast_cond_signal(&audiohook->trigger); 00144 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) { 00145 ast_cond_signal(&audiohook->trigger); 00146 } 00147 00148 return 0; 00149 }
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 623 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().
00624 { 00625 /* Pass off frame to it's respective list write function */ 00626 if (frame->frametype == AST_FRAME_VOICE) 00627 return audio_audiohook_write_list(chan, audiohook_list, direction, frame); 00628 else if (frame->frametype == AST_FRAME_DTMF) 00629 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame); 00630 else 00631 return frame; 00632 }
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 501 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::out_translate, ast_frame::samples, ast_audiohook::status, ast_frame::subclass, ast_audiohook_translate::trans_pvt, ast_audiohook::trigger, and ast_audiohook::write_factory.
Referenced by ast_audiohook_write_list().
00502 { 00503 struct ast_audiohook_translate *in_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->in_translate[0] : &audiohook_list->in_translate[1]); 00504 struct ast_audiohook_translate *out_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->out_translate[0] : &audiohook_list->out_translate[1]); 00505 struct ast_frame *start_frame = frame, *middle_frame = frame, *end_frame = frame; 00506 struct ast_audiohook *audiohook = NULL; 00507 int samples = frame->samples; 00508 00509 /* If the frame coming in is not signed linear we have to send it through the in_translate path */ 00510 if (frame->subclass != AST_FORMAT_SLINEAR) { 00511 if (in_translate->format != frame->subclass) { 00512 if (in_translate->trans_pvt) 00513 ast_translator_free_path(in_translate->trans_pvt); 00514 if (!(in_translate->trans_pvt = ast_translator_build_path(AST_FORMAT_SLINEAR, frame->subclass))) 00515 return frame; 00516 in_translate->format = frame->subclass; 00517 } 00518 if (!(middle_frame = ast_translate(in_translate->trans_pvt, frame, 0))) 00519 return frame; 00520 } 00521 00522 /* Queue up signed linear frame to each spy */ 00523 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00524 ast_audiohook_lock(audiohook); 00525 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00526 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_list, list); 00527 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00528 ast_cond_signal(&audiohook->trigger); 00529 ast_audiohook_unlock(audiohook); 00530 continue; 00531 } 00532 ast_audiohook_write_frame(audiohook, direction, middle_frame); 00533 ast_audiohook_unlock(audiohook); 00534 } 00535 AST_LIST_TRAVERSE_SAFE_END 00536 00537 /* If this frame is being written out to the channel then we need to use whisper sources */ 00538 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE && !AST_LIST_EMPTY(&audiohook_list->whisper_list)) { 00539 int i = 0; 00540 short read_buf[samples], combine_buf[samples], *data1 = NULL, *data2 = NULL; 00541 memset(&combine_buf, 0, sizeof(combine_buf)); 00542 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00543 ast_audiohook_lock(audiohook); 00544 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00545 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list); 00546 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00547 ast_cond_signal(&audiohook->trigger); 00548 ast_audiohook_unlock(audiohook); 00549 continue; 00550 } 00551 if (ast_slinfactory_available(&audiohook->write_factory) >= samples && ast_slinfactory_read(&audiohook->write_factory, read_buf, samples)) { 00552 /* Take audio from this whisper source and combine it into our main buffer */ 00553 for (i = 0, data1 = combine_buf, data2 = read_buf; i < samples; i++, data1++, data2++) 00554 ast_slinear_saturated_add(data1, data2); 00555 } 00556 ast_audiohook_unlock(audiohook); 00557 } 00558 AST_LIST_TRAVERSE_SAFE_END 00559 /* We take all of the combined whisper sources and combine them into the audio being written out */ 00560 for (i = 0, data1 = middle_frame->data, data2 = combine_buf; i < samples; i++, data1++, data2++) 00561 ast_slinear_saturated_add(data1, data2); 00562 end_frame = middle_frame; 00563 } 00564 00565 /* Pass off frame to manipulate audiohooks */ 00566 if (!AST_LIST_EMPTY(&audiohook_list->manipulate_list)) { 00567 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00568 ast_audiohook_lock(audiohook); 00569 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00570 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00571 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00572 ast_audiohook_unlock(audiohook); 00573 /* We basically drop all of our links to the manipulate audiohook and prod it to do it's own destructive things */ 00574 audiohook->manipulate_callback(audiohook, chan, NULL, direction); 00575 continue; 00576 } 00577 /* Feed in frame to manipulation */ 00578 audiohook->manipulate_callback(audiohook, chan, middle_frame, direction); 00579 ast_audiohook_unlock(audiohook); 00580 } 00581 AST_LIST_TRAVERSE_SAFE_END 00582 end_frame = middle_frame; 00583 } 00584 00585 /* Now we figure out what to do with our end frame (whether to transcode or not) */ 00586 if (middle_frame == end_frame) { 00587 /* Middle frame was modified and became the end frame... let's see if we need to transcode */ 00588 if (end_frame->subclass != start_frame->subclass) { 00589 if (out_translate->format != start_frame->subclass) { 00590 if (out_translate->trans_pvt) 00591 ast_translator_free_path(out_translate->trans_pvt); 00592 if (!(out_translate->trans_pvt = ast_translator_build_path(start_frame->subclass, AST_FORMAT_SLINEAR))) { 00593 /* We can't transcode this... drop our middle frame and return the original */ 00594 ast_frfree(middle_frame); 00595 return start_frame; 00596 } 00597 out_translate->format = start_frame->subclass; 00598 } 00599 /* Transcode from our middle (signed linear) frame to new format of the frame that came in */ 00600 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) { 00601 /* Failed to transcode the frame... drop it and return the original */ 00602 ast_frfree(middle_frame); 00603 return start_frame; 00604 } 00605 /* Here's the scoop... middle frame is no longer of use to us */ 00606 ast_frfree(middle_frame); 00607 } 00608 } else { 00609 /* No frame was modified, we can just drop our middle frame and pass the frame we got in out */ 00610 ast_frfree(middle_frame); 00611 } 00612 00613 return end_frame; 00614 }
static struct ast_frame* audiohook_read_frame_both | ( | struct ast_audiohook * | audiohook, | |
size_t | samples | |||
) | [static] |
Definition at line 179 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_frame::frametype, LOG_DEBUG, option_debug, ast_audiohook::options, ast_audiohook::read_factory, 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().
00180 { 00181 int i = 0, usable_read, usable_write; 00182 short buf1[samples], buf2[samples], *read_buf = NULL, *write_buf = NULL, *final_buf = NULL, *data1 = NULL, *data2 = NULL; 00183 struct ast_frame frame = { 00184 .frametype = AST_FRAME_VOICE, 00185 .subclass = AST_FORMAT_SLINEAR, 00186 .data = NULL, 00187 .datalen = sizeof(buf1), 00188 .samples = samples, 00189 }; 00190 00191 /* Make sure both factories have the required samples */ 00192 usable_read = (ast_slinfactory_available(&audiohook->read_factory) >= samples ? 1 : 0); 00193 usable_write = (ast_slinfactory_available(&audiohook->write_factory) >= samples ? 1 : 0); 00194 00195 if (!usable_read && !usable_write) { 00196 /* If both factories are unusable bail out */ 00197 if (option_debug) 00198 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); 00199 return NULL; 00200 } 00201 00202 /* If we want to provide only a read factory make sure we aren't waiting for other audio */ 00203 if (usable_read && !usable_write && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) { 00204 if (option_debug) 00205 ast_log(LOG_DEBUG, "Write factory %p was pretty quick last time, waiting for them.\n", &audiohook->write_factory); 00206 return NULL; 00207 } 00208 00209 /* If we want to provide only a write factory make sure we aren't waiting for other audio */ 00210 if (usable_write && !usable_read && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) { 00211 if (option_debug) 00212 ast_log(LOG_DEBUG, "Read factory %p was pretty quick last time, waiting for them.\n", &audiohook->read_factory); 00213 return NULL; 00214 } 00215 00216 /* Start with the read factory... if there are enough samples, read them in */ 00217 if (usable_read && ast_slinfactory_available(&audiohook->read_factory) >= samples) { 00218 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) { 00219 read_buf = buf1; 00220 /* Adjust read volume if need be */ 00221 if (audiohook->options.read_volume) { 00222 int count = 0; 00223 short adjust_value = abs(audiohook->options.read_volume); 00224 for (count = 0; count < samples; count++) { 00225 if (audiohook->options.read_volume > 0) 00226 ast_slinear_saturated_multiply(&buf1[count], &adjust_value); 00227 else if (audiohook->options.read_volume < 0) 00228 ast_slinear_saturated_divide(&buf1[count], &adjust_value); 00229 } 00230 } 00231 } 00232 } else if (option_debug) 00233 ast_log(LOG_DEBUG, "Failed to get %zd samples from read factory %p\n", samples, &audiohook->read_factory); 00234 00235 /* Move on to the write factory... if there are enough samples, read them in */ 00236 if (usable_write && ast_slinfactory_available(&audiohook->write_factory) >= samples) { 00237 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) { 00238 write_buf = buf2; 00239 /* Adjust write volume if need be */ 00240 if (audiohook->options.write_volume) { 00241 int count = 0; 00242 short adjust_value = abs(audiohook->options.write_volume); 00243 for (count = 0; count < samples; count++) { 00244 if (audiohook->options.write_volume > 0) 00245 ast_slinear_saturated_multiply(&buf2[count], &adjust_value); 00246 else if (audiohook->options.write_volume < 0) 00247 ast_slinear_saturated_divide(&buf2[count], &adjust_value); 00248 } 00249 } 00250 } 00251 } else if (option_debug) 00252 ast_log(LOG_DEBUG, "Failed to get %zd samples from write factory %p\n", samples, &audiohook->write_factory); 00253 00254 /* Basically we figure out which buffer to use... and if mixing can be done here */ 00255 if (!read_buf && !write_buf) 00256 return NULL; 00257 else if (read_buf && write_buf) { 00258 for (i = 0, data1 = read_buf, data2 = write_buf; i < samples; i++, data1++, data2++) 00259 ast_slinear_saturated_add(data1, data2); 00260 final_buf = buf1; 00261 } else if (read_buf) 00262 final_buf = buf1; 00263 else if (write_buf) 00264 final_buf = buf2; 00265 00266 /* Make the final buffer part of the frame, so it gets duplicated fine */ 00267 frame.data = final_buf; 00268 00269 /* Yahoo, a combined copy of the audio! */ 00270 return ast_frdup(&frame); 00271 }
static struct ast_frame* audiohook_read_frame_single | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Definition at line 151 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().
00152 { 00153 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00154 int vol = (direction == AST_AUDIOHOOK_DIRECTION_READ ? audiohook->options.read_volume : audiohook->options.write_volume); 00155 short buf[samples]; 00156 struct ast_frame frame = { 00157 .frametype = AST_FRAME_VOICE, 00158 .subclass = AST_FORMAT_SLINEAR, 00159 .data = buf, 00160 .datalen = sizeof(buf), 00161 .samples = samples, 00162 }; 00163 00164 /* Ensure the factory is able to give us the samples we want */ 00165 if (samples > ast_slinfactory_available(factory)) 00166 return NULL; 00167 00168 /* Read data in from factory */ 00169 if (!ast_slinfactory_read(factory, buf, samples)) 00170 return NULL; 00171 00172 /* If a volume adjustment needs to be applied apply it */ 00173 if (vol) 00174 ast_frame_adjust_volume(&frame, vol); 00175 00176 return ast_frdup(&frame); 00177 }
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 472 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, and ast_audiohook::status.
Referenced by ast_audiohook_write_list().
00473 { 00474 struct ast_audiohook *audiohook = NULL; 00475 00476 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00477 ast_audiohook_lock(audiohook); 00478 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00479 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00480 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00481 ast_audiohook_unlock(audiohook); 00482 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00483 continue; 00484 } 00485 if (ast_test_flag(audiohook, AST_AUDIOHOOK_WANTS_DTMF)) 00486 audiohook->manipulate_callback(audiohook, chan, frame, direction); 00487 ast_audiohook_unlock(audiohook); 00488 } 00489 AST_LIST_TRAVERSE_SAFE_END 00490 00491 return frame; 00492 }
static struct ast_audiohook* find_audiohook_by_source | ( | struct ast_audiohook_list * | audiohook_list, | |
const char * | source | |||
) | [static] |
Definition at line 416 of file audiohook.c.
References AST_LIST_TRAVERSE, and ast_audiohook::source.
Referenced by ast_audiohook_detach_source().
00417 { 00418 struct ast_audiohook *audiohook = NULL; 00419 00420 AST_LIST_TRAVERSE(&audiohook_list->spy_list, audiohook, list) { 00421 if (!strcasecmp(audiohook->source, source)) 00422 return audiohook; 00423 } 00424 00425 AST_LIST_TRAVERSE(&audiohook_list->whisper_list, audiohook, list) { 00426 if (!strcasecmp(audiohook->source, source)) 00427 return audiohook; 00428 } 00429 00430 AST_LIST_TRAVERSE(&audiohook_list->manipulate_list, audiohook, list) { 00431 if (!strcasecmp(audiohook->source, source)) 00432 return audiohook; 00433 } 00434 00435 return NULL; 00436 }