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00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 197537 $")
00029
00030 #include <stdio.h>
00031 #include <stdlib.h>
00032 #include <string.h>
00033 #include <signal.h>
00034 #include <errno.h>
00035 #include <unistd.h>
00036
00037 #include "asterisk/logger.h"
00038 #include "asterisk/channel.h"
00039 #include "asterisk/options.h"
00040 #include "asterisk/utils.h"
00041 #include "asterisk/lock.h"
00042 #include "asterisk/linkedlists.h"
00043 #include "asterisk/audiohook.h"
00044 #include "asterisk/slinfactory.h"
00045 #include "asterisk/frame.h"
00046 #include "asterisk/translate.h"
00047
00048 struct ast_audiohook_translate {
00049 struct ast_trans_pvt *trans_pvt;
00050 int format;
00051 };
00052
00053 struct ast_audiohook_list {
00054 struct ast_audiohook_translate in_translate[2];
00055 struct ast_audiohook_translate out_translate[2];
00056 AST_LIST_HEAD_NOLOCK(, ast_audiohook) spy_list;
00057 AST_LIST_HEAD_NOLOCK(, ast_audiohook) whisper_list;
00058 AST_LIST_HEAD_NOLOCK(, ast_audiohook) manipulate_list;
00059 };
00060
00061
00062
00063
00064
00065
00066
00067 int ast_audiohook_init(struct ast_audiohook *audiohook, enum ast_audiohook_type type, const char *source)
00068 {
00069
00070 audiohook->type = type;
00071 audiohook->source = source;
00072
00073
00074 ast_mutex_init(&audiohook->lock);
00075 ast_cond_init(&audiohook->trigger, NULL);
00076
00077
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
00089 audiohook->status = AST_AUDIOHOOK_STATUS_NEW;
00090
00091 return 0;
00092 }
00093
00094
00095
00096
00097
00098 int ast_audiohook_destroy(struct ast_audiohook *audiohook)
00099 {
00100
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
00112 if (audiohook->trans_pvt)
00113 ast_translator_free_path(audiohook->trans_pvt);
00114
00115
00116 ast_cond_destroy(&audiohook->trigger);
00117 ast_mutex_destroy(&audiohook->lock);
00118
00119 return 0;
00120 }
00121
00122
00123
00124
00125
00126
00127
00128 int ast_audiohook_write_frame(struct ast_audiohook *audiohook, enum ast_audiohook_direction direction, struct ast_frame *frame)
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_samples;
00134 int our_factory_ms;
00135 int other_factory_samples;
00136 int other_factory_ms;
00137
00138
00139 *time = ast_tvnow();
00140
00141 our_factory_samples = ast_slinfactory_available(factory);
00142 our_factory_ms = ast_tvdiff_ms(*time, previous_time) + (our_factory_samples / 8);
00143 other_factory_samples = ast_slinfactory_available(other_factory);
00144 other_factory_ms = other_factory_samples / 8;
00145
00146
00147 if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && other_factory_samples && (our_factory_ms - other_factory_ms > AST_AUDIOHOOK_SYNC_TOLERANCE)) {
00148 if (option_debug)
00149 ast_log(LOG_DEBUG, "Flushing audiohook %p so it remains in sync\n", audiohook);
00150 ast_slinfactory_flush(factory);
00151 ast_slinfactory_flush(other_factory);
00152 }
00153
00154 if (ast_test_flag(audiohook, AST_AUDIOHOOK_SMALL_QUEUE) && (our_factory_samples > 640 || other_factory_samples > 640)) {
00155 if (option_debug) {
00156 ast_log(LOG_DEBUG, "Audiohook %p has stale audio in its factories. Flushing them both\n", audiohook);
00157 }
00158 ast_slinfactory_flush(factory);
00159 ast_slinfactory_flush(other_factory);
00160 }
00161
00162
00163 ast_slinfactory_feed(factory, frame);
00164
00165
00166 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) {
00167 ast_cond_signal(&audiohook->trigger);
00168 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) {
00169 ast_cond_signal(&audiohook->trigger);
00170 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) {
00171 ast_cond_signal(&audiohook->trigger);
00172 }
00173
00174 return 0;
00175 }
00176
00177 static struct ast_frame *audiohook_read_frame_single(struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction)
00178 {
00179 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory);
00180 int vol = (direction == AST_AUDIOHOOK_DIRECTION_READ ? audiohook->options.read_volume : audiohook->options.write_volume);
00181 short buf[samples];
00182 struct ast_frame frame = {
00183 .frametype = AST_FRAME_VOICE,
00184 .subclass = AST_FORMAT_SLINEAR,
00185 .data = buf,
00186 .datalen = sizeof(buf),
00187 .samples = samples,
00188 };
00189
00190
00191 if (samples > ast_slinfactory_available(factory))
00192 return NULL;
00193
00194
00195 if (!ast_slinfactory_read(factory, buf, samples))
00196 return NULL;
00197
00198
00199 if (vol)
00200 ast_frame_adjust_volume(&frame, vol);
00201
00202 return ast_frdup(&frame);
00203 }
00204
00205 static struct ast_frame *audiohook_read_frame_both(struct ast_audiohook *audiohook, size_t samples)
00206 {
00207 int i = 0, usable_read, usable_write;
00208 short buf1[samples], buf2[samples], *read_buf = NULL, *write_buf = NULL, *final_buf = NULL, *data1 = NULL, *data2 = NULL;
00209 struct ast_frame frame = {
00210 .frametype = AST_FRAME_VOICE,
00211 .subclass = AST_FORMAT_SLINEAR,
00212 .data = NULL,
00213 .datalen = sizeof(buf1),
00214 .samples = samples,
00215 };
00216
00217
00218 usable_read = (ast_slinfactory_available(&audiohook->read_factory) >= samples ? 1 : 0);
00219 usable_write = (ast_slinfactory_available(&audiohook->write_factory) >= samples ? 1 : 0);
00220
00221 if (!usable_read && !usable_write) {
00222
00223 if (option_debug)
00224 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);
00225 return NULL;
00226 }
00227
00228
00229 if (usable_read && !usable_write && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) {
00230 if (option_debug > 2)
00231 ast_log(LOG_DEBUG, "Write factory %p was pretty quick last time, waiting for them.\n", &audiohook->write_factory);
00232 return NULL;
00233 }
00234
00235
00236 if (usable_write && !usable_read && (ast_tvdiff_ms(ast_tvnow(), audiohook->read_time) < (samples/8)*2)) {
00237 if (option_debug > 2)
00238 ast_log(LOG_DEBUG, "Read factory %p was pretty quick last time, waiting for them.\n", &audiohook->read_factory);
00239 return NULL;
00240 }
00241
00242
00243 if (usable_read) {
00244 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) {
00245 read_buf = buf1;
00246
00247 if (audiohook->options.read_volume) {
00248 int count = 0;
00249 short adjust_value = abs(audiohook->options.read_volume);
00250 for (count = 0; count < samples; count++) {
00251 if (audiohook->options.read_volume > 0)
00252 ast_slinear_saturated_multiply(&buf1[count], &adjust_value);
00253 else if (audiohook->options.read_volume < 0)
00254 ast_slinear_saturated_divide(&buf1[count], &adjust_value);
00255 }
00256 }
00257 }
00258 } else if (option_debug)
00259 ast_log(LOG_DEBUG, "Failed to get %zd samples from read factory %p\n", samples, &audiohook->read_factory);
00260
00261
00262 if (usable_write) {
00263 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) {
00264 write_buf = buf2;
00265
00266 if (audiohook->options.write_volume) {
00267 int count = 0;
00268 short adjust_value = abs(audiohook->options.write_volume);
00269 for (count = 0; count < samples; count++) {
00270 if (audiohook->options.write_volume > 0)
00271 ast_slinear_saturated_multiply(&buf2[count], &adjust_value);
00272 else if (audiohook->options.write_volume < 0)
00273 ast_slinear_saturated_divide(&buf2[count], &adjust_value);
00274 }
00275 }
00276 }
00277 } else if (option_debug)
00278 ast_log(LOG_DEBUG, "Failed to get %zd samples from write factory %p\n", samples, &audiohook->write_factory);
00279
00280
00281 if (!read_buf && !write_buf)
00282 return NULL;
00283 else if (read_buf && write_buf) {
00284 for (i = 0, data1 = read_buf, data2 = write_buf; i < samples; i++, data1++, data2++)
00285 ast_slinear_saturated_add(data1, data2);
00286 final_buf = buf1;
00287 } else if (read_buf)
00288 final_buf = buf1;
00289 else if (write_buf)
00290 final_buf = buf2;
00291
00292
00293 frame.data = final_buf;
00294
00295
00296 return ast_frdup(&frame);
00297 }
00298
00299
00300
00301
00302
00303
00304
00305
00306 struct ast_frame *ast_audiohook_read_frame(struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction, int format)
00307 {
00308 struct ast_frame *read_frame = NULL, *final_frame = NULL;
00309
00310 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction))))
00311 return NULL;
00312
00313
00314 if (format != AST_FORMAT_SLINEAR) {
00315
00316 if (audiohook->format != format) {
00317 if (audiohook->trans_pvt) {
00318 ast_translator_free_path(audiohook->trans_pvt);
00319 audiohook->trans_pvt = NULL;
00320 }
00321
00322 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) {
00323 ast_frfree(read_frame);
00324 return NULL;
00325 }
00326 }
00327
00328 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1);
00329 } else {
00330 final_frame = read_frame;
00331 }
00332
00333 return final_frame;
00334 }
00335
00336
00337
00338
00339
00340
00341 int ast_audiohook_attach(struct ast_channel *chan, struct ast_audiohook *audiohook)
00342 {
00343 ast_channel_lock(chan);
00344
00345 if (!chan->audiohooks) {
00346
00347 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) {
00348 ast_channel_unlock(chan);
00349 return -1;
00350 }
00351 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list);
00352 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list);
00353 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list);
00354 }
00355
00356
00357 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY)
00358 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list);
00359 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER)
00360 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list);
00361 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE)
00362 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list);
00363
00364
00365 audiohook->status = AST_AUDIOHOOK_STATUS_RUNNING;
00366
00367 ast_channel_unlock(chan);
00368
00369 return 0;
00370 }
00371
00372
00373
00374
00375
00376 int ast_audiohook_detach(struct ast_audiohook *audiohook)
00377 {
00378 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE)
00379 return 0;
00380
00381 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN;
00382
00383 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE)
00384 ast_audiohook_trigger_wait(audiohook);
00385
00386 return 0;
00387 }
00388
00389
00390
00391
00392
00393 int ast_audiohook_detach_list(struct ast_audiohook_list *audiohook_list)
00394 {
00395 int i = 0;
00396 struct ast_audiohook *audiohook = NULL;
00397
00398
00399 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) {
00400 ast_audiohook_lock(audiohook);
00401 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_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
00409 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) {
00410 ast_audiohook_lock(audiohook);
00411 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list);
00412 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00413 ast_cond_signal(&audiohook->trigger);
00414 ast_audiohook_unlock(audiohook);
00415 }
00416 AST_LIST_TRAVERSE_SAFE_END
00417
00418
00419 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) {
00420 ast_audiohook_lock(audiohook);
00421 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list);
00422 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00423 ast_audiohook_unlock(audiohook);
00424 audiohook->manipulate_callback(audiohook, NULL, NULL, 0);
00425 }
00426 AST_LIST_TRAVERSE_SAFE_END
00427
00428
00429 for (i = 0; i < 2; i++) {
00430 if (audiohook_list->in_translate[i].trans_pvt)
00431 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt);
00432 if (audiohook_list->out_translate[i].trans_pvt)
00433 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt);
00434 }
00435
00436
00437 ast_free(audiohook_list);
00438
00439 return 0;
00440 }
00441
00442 static struct ast_audiohook *find_audiohook_by_source(struct ast_audiohook_list *audiohook_list, const char *source)
00443 {
00444 struct ast_audiohook *audiohook = NULL;
00445
00446 AST_LIST_TRAVERSE(&audiohook_list->spy_list, audiohook, list) {
00447 if (!strcasecmp(audiohook->source, source))
00448 return audiohook;
00449 }
00450
00451 AST_LIST_TRAVERSE(&audiohook_list->whisper_list, audiohook, list) {
00452 if (!strcasecmp(audiohook->source, source))
00453 return audiohook;
00454 }
00455
00456 AST_LIST_TRAVERSE(&audiohook_list->manipulate_list, audiohook, list) {
00457 if (!strcasecmp(audiohook->source, source))
00458 return audiohook;
00459 }
00460
00461 return NULL;
00462 }
00463
00464 void ast_audiohook_move_by_source (struct ast_channel *old_chan, struct ast_channel *new_chan, const char *source)
00465 {
00466 struct ast_audiohook *audiohook;
00467
00468 if (!old_chan->audiohooks || !(audiohook = find_audiohook_by_source(old_chan->audiohooks, source))) {
00469 return;
00470 }
00471
00472
00473
00474
00475
00476
00477 ast_audiohook_lock(audiohook);
00478 ast_audiohook_remove(old_chan, audiohook);
00479 ast_audiohook_attach(new_chan, audiohook);
00480 ast_audiohook_unlock(audiohook);
00481 }
00482
00483
00484
00485
00486
00487
00488 int ast_audiohook_detach_source(struct ast_channel *chan, const char *source)
00489 {
00490 struct ast_audiohook *audiohook = NULL;
00491
00492 ast_channel_lock(chan);
00493
00494
00495 if (!chan->audiohooks) {
00496 ast_channel_unlock(chan);
00497 return -1;
00498 }
00499
00500 audiohook = find_audiohook_by_source(chan->audiohooks, source);
00501
00502 ast_channel_unlock(chan);
00503
00504 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE)
00505 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN;
00506
00507 return (audiohook ? 0 : -1);
00508 }
00509
00510
00511
00512
00513
00514
00515
00516
00517
00518
00519
00520 int ast_audiohook_remove(struct ast_channel *chan, struct ast_audiohook *audiohook)
00521 {
00522 ast_channel_lock(chan);
00523
00524 if (!chan->audiohooks) {
00525 ast_channel_unlock(chan);
00526 return -1;
00527 }
00528
00529 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY)
00530 AST_LIST_REMOVE(&chan->audiohooks->spy_list, audiohook, list);
00531 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER)
00532 AST_LIST_REMOVE(&chan->audiohooks->whisper_list, audiohook, list);
00533 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE)
00534 AST_LIST_REMOVE(&chan->audiohooks->manipulate_list, audiohook, list);
00535
00536 ast_audiohook_lock(audiohook);
00537 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00538 ast_cond_signal(&audiohook->trigger);
00539 ast_audiohook_unlock(audiohook);
00540
00541 ast_channel_unlock(chan);
00542
00543 return 0;
00544 }
00545
00546
00547
00548
00549
00550
00551
00552
00553 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)
00554 {
00555 struct ast_audiohook *audiohook = NULL;
00556
00557 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) {
00558 ast_audiohook_lock(audiohook);
00559 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) {
00560 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list);
00561 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00562 ast_audiohook_unlock(audiohook);
00563 audiohook->manipulate_callback(audiohook, NULL, NULL, 0);
00564 continue;
00565 }
00566 if (ast_test_flag(audiohook, AST_AUDIOHOOK_WANTS_DTMF))
00567 audiohook->manipulate_callback(audiohook, chan, frame, direction);
00568 ast_audiohook_unlock(audiohook);
00569 }
00570 AST_LIST_TRAVERSE_SAFE_END
00571
00572 return frame;
00573 }
00574
00575
00576
00577
00578
00579
00580
00581
00582 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)
00583 {
00584 struct ast_audiohook_translate *in_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->in_translate[0] : &audiohook_list->in_translate[1]);
00585 struct ast_audiohook_translate *out_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->out_translate[0] : &audiohook_list->out_translate[1]);
00586 struct ast_frame *start_frame = frame, *middle_frame = frame, *end_frame = frame;
00587 struct ast_audiohook *audiohook = NULL;
00588 int samples = frame->samples;
00589
00590
00591 if (frame->subclass != AST_FORMAT_SLINEAR) {
00592 if (in_translate->format != frame->subclass) {
00593 if (in_translate->trans_pvt)
00594 ast_translator_free_path(in_translate->trans_pvt);
00595 if (!(in_translate->trans_pvt = ast_translator_build_path(AST_FORMAT_SLINEAR, frame->subclass)))
00596 return frame;
00597 in_translate->format = frame->subclass;
00598 }
00599 if (!(middle_frame = ast_translate(in_translate->trans_pvt, frame, 0)))
00600 return frame;
00601 samples = middle_frame->samples;
00602 }
00603
00604
00605 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) {
00606 ast_audiohook_lock(audiohook);
00607 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) {
00608 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_list, list);
00609 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00610 ast_cond_signal(&audiohook->trigger);
00611 ast_audiohook_unlock(audiohook);
00612 continue;
00613 }
00614 ast_audiohook_write_frame(audiohook, direction, middle_frame);
00615 ast_audiohook_unlock(audiohook);
00616 }
00617 AST_LIST_TRAVERSE_SAFE_END
00618
00619
00620 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE && !AST_LIST_EMPTY(&audiohook_list->whisper_list)) {
00621 int i = 0;
00622 short read_buf[samples], combine_buf[samples], *data1 = NULL, *data2 = NULL;
00623 memset(&combine_buf, 0, sizeof(combine_buf));
00624 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) {
00625 ast_audiohook_lock(audiohook);
00626 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) {
00627 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list);
00628 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00629 ast_cond_signal(&audiohook->trigger);
00630 ast_audiohook_unlock(audiohook);
00631 continue;
00632 }
00633 if (ast_slinfactory_available(&audiohook->write_factory) >= samples && ast_slinfactory_read(&audiohook->write_factory, read_buf, samples)) {
00634
00635 for (i = 0, data1 = combine_buf, data2 = read_buf; i < samples; i++, data1++, data2++)
00636 ast_slinear_saturated_add(data1, data2);
00637 }
00638 ast_audiohook_unlock(audiohook);
00639 }
00640 AST_LIST_TRAVERSE_SAFE_END
00641
00642 for (i = 0, data1 = middle_frame->data, data2 = combine_buf; i < samples; i++, data1++, data2++)
00643 ast_slinear_saturated_add(data1, data2);
00644 end_frame = middle_frame;
00645 }
00646
00647
00648 if (!AST_LIST_EMPTY(&audiohook_list->manipulate_list)) {
00649 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) {
00650 ast_audiohook_lock(audiohook);
00651 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) {
00652 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list);
00653 audiohook->status = AST_AUDIOHOOK_STATUS_DONE;
00654 ast_audiohook_unlock(audiohook);
00655
00656 audiohook->manipulate_callback(audiohook, chan, NULL, direction);
00657 continue;
00658 }
00659
00660 audiohook->manipulate_callback(audiohook, chan, middle_frame, direction);
00661 ast_audiohook_unlock(audiohook);
00662 }
00663 AST_LIST_TRAVERSE_SAFE_END
00664 end_frame = middle_frame;
00665 }
00666
00667
00668 if (middle_frame == end_frame) {
00669
00670 if (end_frame->subclass != start_frame->subclass) {
00671 if (out_translate->format != start_frame->subclass) {
00672 if (out_translate->trans_pvt)
00673 ast_translator_free_path(out_translate->trans_pvt);
00674 if (!(out_translate->trans_pvt = ast_translator_build_path(start_frame->subclass, AST_FORMAT_SLINEAR))) {
00675
00676 ast_frfree(middle_frame);
00677 return start_frame;
00678 }
00679 out_translate->format = start_frame->subclass;
00680 }
00681
00682 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) {
00683
00684 ast_frfree(middle_frame);
00685 return start_frame;
00686 }
00687
00688 ast_frfree(middle_frame);
00689 }
00690 } else {
00691
00692 ast_frfree(middle_frame);
00693 }
00694
00695 return end_frame;
00696 }
00697
00698
00699
00700
00701
00702
00703
00704
00705 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)
00706 {
00707
00708 if (frame->frametype == AST_FRAME_VOICE)
00709 return audio_audiohook_write_list(chan, audiohook_list, direction, frame);
00710 else if (frame->frametype == AST_FRAME_DTMF)
00711 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame);
00712 else
00713 return frame;
00714 }
00715
00716
00717
00718
00719
00720 void ast_audiohook_trigger_wait(struct ast_audiohook *audiohook)
00721 {
00722 struct timeval tv;
00723 struct timespec ts;
00724
00725 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000));
00726 ts.tv_sec = tv.tv_sec;
00727 ts.tv_nsec = tv.tv_usec * 1000;
00728
00729 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts);
00730
00731 return;
00732 }