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00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 166157 $")
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_ms;
00134 int other_factory_samples;
00135 int other_factory_ms;
00136
00137
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
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
00153 ast_slinfactory_feed(factory, frame);
00154
00155
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 }
00166
00167 static struct ast_frame *audiohook_read_frame_single(struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction)
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
00181 if (samples > ast_slinfactory_available(factory))
00182 return NULL;
00183
00184
00185 if (!ast_slinfactory_read(factory, buf, samples))
00186 return NULL;
00187
00188
00189 if (vol)
00190 ast_frame_adjust_volume(&frame, vol);
00191
00192 return ast_frdup(&frame);
00193 }
00194
00195 static struct ast_frame *audiohook_read_frame_both(struct ast_audiohook *audiohook, size_t samples)
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
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
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
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
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
00233 if (usable_read) {
00234 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) {
00235 read_buf = buf1;
00236
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
00252 if (usable_write) {
00253 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) {
00254 write_buf = buf2;
00255
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
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
00283 frame.data = final_buf;
00284
00285
00286 return ast_frdup(&frame);
00287 }
00288
00289
00290
00291
00292
00293
00294
00295
00296 struct ast_frame *ast_audiohook_read_frame(struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction, int format)
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
00304 if (format != AST_FORMAT_SLINEAR) {
00305
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
00312 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) {
00313 ast_frfree(read_frame);
00314 return NULL;
00315 }
00316 }
00317
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 }
00325
00326
00327
00328
00329
00330
00331 int ast_audiohook_attach(struct ast_channel *chan, struct ast_audiohook *audiohook)
00332 {
00333 ast_channel_lock(chan);
00334
00335 if (!chan->audiohooks) {
00336
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
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
00355 audiohook->status = AST_AUDIOHOOK_STATUS_RUNNING;
00356
00357 ast_channel_unlock(chan);
00358
00359 return 0;
00360 }
00361
00362
00363
00364
00365
00366 int ast_audiohook_detach(struct ast_audiohook *audiohook)
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 }
00378
00379
00380
00381
00382
00383 int ast_audiohook_detach_list(struct ast_audiohook_list *audiohook_list)
00384 {
00385 int i = 0;
00386 struct ast_audiohook *audiohook = NULL;
00387
00388
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
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
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
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
00427 ast_free(audiohook_list);
00428
00429 return 0;
00430 }
00431
00432 static struct ast_audiohook *find_audiohook_by_source(struct ast_audiohook_list *audiohook_list, const char *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 }
00453
00454 void ast_audiohook_move_by_source (struct ast_channel *old_chan, struct ast_channel *new_chan, const char *source)
00455 {
00456 struct ast_audiohook *audiohook = find_audiohook_by_source(old_chan->audiohooks, source);
00457
00458 if (!audiohook) {
00459 return;
00460 }
00461
00462
00463
00464
00465
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 }
00472
00473
00474
00475
00476
00477
00478 int ast_audiohook_detach_source(struct ast_channel *chan, const char *source)
00479 {
00480 struct ast_audiohook *audiohook = NULL;
00481
00482 ast_channel_lock(chan);
00483
00484
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 }
00499
00500
00501
00502
00503
00504
00505
00506
00507
00508
00509
00510 int ast_audiohook_remove(struct ast_channel *chan, struct ast_audiohook *audiohook)
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 }
00535
00536
00537
00538
00539
00540
00541
00542
00543 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)
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 }
00564
00565
00566
00567
00568
00569
00570
00571
00572 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)
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
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
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
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
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
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
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
00645 audiohook->manipulate_callback(audiohook, chan, NULL, direction);
00646 continue;
00647 }
00648
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
00657 if (middle_frame == end_frame) {
00658
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
00665 ast_frfree(middle_frame);
00666 return start_frame;
00667 }
00668 out_translate->format = start_frame->subclass;
00669 }
00670
00671 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) {
00672
00673 ast_frfree(middle_frame);
00674 return start_frame;
00675 }
00676
00677 ast_frfree(middle_frame);
00678 }
00679 } else {
00680
00681 ast_frfree(middle_frame);
00682 }
00683
00684 return end_frame;
00685 }
00686
00687
00688
00689
00690
00691
00692
00693
00694 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)
00695 {
00696
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 }
00704
00705
00706
00707
00708
00709 void ast_audiohook_trigger_wait(struct ast_audiohook *audiohook)
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 }