#include "asterisk/slinfactory.h"
Go to the source code of this file.
Data Structures | |
struct | ast_audiohook |
struct | ast_audiohook_options |
Defines | |
#define | ast_audiohook_lock(ah) ast_mutex_lock(&(ah)->lock) |
Lock an audiohook. | |
#define | ast_audiohook_unlock(ah) ast_mutex_unlock(&(ah)->lock) |
Unlock an audiohook. | |
Typedefs | |
typedef int(* | ast_audiohook_manipulate_callback )(struct ast_audiohook *audiohook, struct ast_channel *chan, struct ast_frame *frame, enum ast_audiohook_direction direction) |
Callback function for manipulate audiohook type. | |
Enumerations | |
enum | ast_audiohook_direction { AST_AUDIOHOOK_DIRECTION_READ = 0, AST_AUDIOHOOK_DIRECTION_WRITE, AST_AUDIOHOOK_DIRECTION_BOTH } |
enum | ast_audiohook_flags { AST_AUDIOHOOK_TRIGGER_MODE = (3 << 0), AST_AUDIOHOOK_TRIGGER_READ = (1 << 0), AST_AUDIOHOOK_TRIGGER_WRITE = (2 << 0), AST_AUDIOHOOK_WANTS_DTMF = (1 << 1), AST_AUDIOHOOK_TRIGGER_SYNC = (1 << 2) } |
enum | ast_audiohook_status { AST_AUDIOHOOK_STATUS_NEW = 0, AST_AUDIOHOOK_STATUS_RUNNING, AST_AUDIOHOOK_STATUS_SHUTDOWN, AST_AUDIOHOOK_STATUS_DONE } |
enum | ast_audiohook_type { AST_AUDIOHOOK_TYPE_SPY = 0, AST_AUDIOHOOK_TYPE_WHISPER, AST_AUDIOHOOK_TYPE_MANIPULATE } |
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. | |
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. | |
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. | |
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. |
Definition in file audiohook.h.
#define ast_audiohook_lock | ( | ah | ) | ast_mutex_lock(&(ah)->lock) |
Lock an audiohook.
ah | Audiohook structure |
Definition at line 171 of file audiohook.h.
Referenced by ast_audiohook_detach_list(), audio_audiohook_write_list(), channel_spy(), dtmf_audiohook_write_list(), mixmonitor_thread(), and spy_generate().
#define ast_audiohook_unlock | ( | ah | ) | ast_mutex_unlock(&(ah)->lock) |
Unlock an audiohook.
ah | Audiohook structure |
Definition at line 176 of file audiohook.h.
Referenced by ast_audiohook_detach_list(), audio_audiohook_write_list(), channel_spy(), dtmf_audiohook_write_list(), mixmonitor_thread(), and spy_generate().
typedef int(* ast_audiohook_manipulate_callback)(struct ast_audiohook *audiohook, struct ast_channel *chan, struct ast_frame *frame, enum ast_audiohook_direction direction) |
Callback function for manipulate audiohook type.
audiohook | Audiohook structure | |
chan | Channel | |
frame | Frame of audio to manipulate | |
direction | Direction frame came from |
Definition at line 70 of file audiohook.h.
AST_AUDIOHOOK_DIRECTION_READ | Reading audio in |
AST_AUDIOHOOK_DIRECTION_WRITE | Writing audio out |
AST_AUDIOHOOK_DIRECTION_BOTH | Both reading audio in and writing audio out |
Definition at line 45 of file audiohook.h.
00045 { 00046 AST_AUDIOHOOK_DIRECTION_READ = 0, /*!< Reading audio in */ 00047 AST_AUDIOHOOK_DIRECTION_WRITE, /*!< Writing audio out */ 00048 AST_AUDIOHOOK_DIRECTION_BOTH, /*!< Both reading audio in and writing audio out */ 00049 };
enum ast_audiohook_flags |
Definition at line 51 of file audiohook.h.
00051 { 00052 AST_AUDIOHOOK_TRIGGER_MODE = (3 << 0), /*!< When audiohook should be triggered to do something */ 00053 AST_AUDIOHOOK_TRIGGER_READ = (1 << 0), /*!< Audiohook wants to be triggered when reading audio in */ 00054 AST_AUDIOHOOK_TRIGGER_WRITE = (2 << 0), /*!< Audiohook wants to be triggered when writing audio out */ 00055 AST_AUDIOHOOK_WANTS_DTMF = (1 << 1), /*!< Audiohook also wants to receive DTMF frames */ 00056 AST_AUDIOHOOK_TRIGGER_SYNC = (1 << 2), /*!< Audiohook wants to be triggered when both sides have combined audio available */ 00057 };
enum ast_audiohook_status |
Definition at line 38 of file audiohook.h.
00038 { 00039 AST_AUDIOHOOK_STATUS_NEW = 0, /*!< Audiohook was just created, not in use yet */ 00040 AST_AUDIOHOOK_STATUS_RUNNING, /*!< Audiohook is running on a channel */ 00041 AST_AUDIOHOOK_STATUS_SHUTDOWN, /*!< Audiohook is being shutdown */ 00042 AST_AUDIOHOOK_STATUS_DONE, /*!< Audiohook has shutdown and is not running on a channel any longer */ 00043 };
enum ast_audiohook_type |
Definition at line 32 of file audiohook.h.
00032 { 00033 AST_AUDIOHOOK_TYPE_SPY = 0, /*!< Audiohook wants to receive audio */ 00034 AST_AUDIOHOOK_TYPE_WHISPER, /*!< Audiohook wants to provide audio to be mixed with existing audio */ 00035 AST_AUDIOHOOK_TYPE_MANIPULATE, /*!< Audiohook wants to manipulate the audio */ 00036 };
int ast_audiohook_attach | ( | struct ast_channel * | chan, | |
struct ast_audiohook * | audiohook | |||
) |
Attach audiohook to channel.
chan | Channel | |
audiohook | Audiohook structure |
Definition at line 324 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().
00325 { 00326 ast_channel_lock(chan); 00327 00328 if (!chan->audiohooks) { 00329 /* Whoops... allocate a new structure */ 00330 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) { 00331 ast_channel_unlock(chan); 00332 return -1; 00333 } 00334 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list); 00335 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list); 00336 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list); 00337 } 00338 00339 /* Drop into respective list */ 00340 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00341 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list); 00342 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00343 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list); 00344 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00345 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list); 00346 00347 /* Change status over to running since it is now attached */ 00348 audiohook->status = AST_AUDIOHOOK_STATUS_RUNNING; 00349 00350 ast_channel_unlock(chan); 00351 00352 return 0; 00353 }
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 359 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().
00360 { 00361 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00362 return 0; 00363 00364 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00365 00366 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00367 ast_audiohook_trigger_wait(audiohook); 00368 00369 return 0; 00370 }
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 376 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().
00377 { 00378 int i = 0; 00379 struct ast_audiohook *audiohook = NULL; 00380 00381 /* Drop any spies */ 00382 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00383 ast_audiohook_lock(audiohook); 00384 AST_LIST_REMOVE_CURRENT(&audiohook_list->spy_list, list); 00385 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00386 ast_cond_signal(&audiohook->trigger); 00387 ast_audiohook_unlock(audiohook); 00388 } 00389 AST_LIST_TRAVERSE_SAFE_END 00390 00391 /* Drop any whispering sources */ 00392 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00393 ast_audiohook_lock(audiohook); 00394 AST_LIST_REMOVE_CURRENT(&audiohook_list->whisper_list, list); 00395 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00396 ast_cond_signal(&audiohook->trigger); 00397 ast_audiohook_unlock(audiohook); 00398 } 00399 AST_LIST_TRAVERSE_SAFE_END 00400 00401 /* Drop any manipulaters */ 00402 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00403 ast_audiohook_lock(audiohook); 00404 AST_LIST_REMOVE_CURRENT(&audiohook_list->manipulate_list, list); 00405 audiohook->status = AST_AUDIOHOOK_STATUS_DONE; 00406 ast_audiohook_unlock(audiohook); 00407 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00408 } 00409 AST_LIST_TRAVERSE_SAFE_END 00410 00411 /* Drop translation paths if present */ 00412 for (i = 0; i < 2; i++) { 00413 if (audiohook_list->in_translate[i].trans_pvt) 00414 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt); 00415 if (audiohook_list->out_translate[i].trans_pvt) 00416 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt); 00417 } 00418 00419 /* Free ourselves */ 00420 ast_free(audiohook_list); 00421 00422 return 0; 00423 }
int ast_audiohook_detach_source | ( | struct ast_channel * | chan, | |
const char * | source | |||
) |
Detach specified source audiohook from channel.
chan | Channel to detach from | |
source | Name of source to detach |
Definition at line 452 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().
00453 { 00454 struct ast_audiohook *audiohook = NULL; 00455 00456 ast_channel_lock(chan); 00457 00458 /* Ensure the channel has audiohooks on it */ 00459 if (!chan->audiohooks) { 00460 ast_channel_unlock(chan); 00461 return -1; 00462 } 00463 00464 audiohook = find_audiohook_by_source(chan->audiohooks, source); 00465 00466 ast_channel_unlock(chan); 00467 00468 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00469 audiohook->status = AST_AUDIOHOOK_STATUS_SHUTDOWN; 00470 00471 return (audiohook ? 0 : -1); 00472 }
int ast_audiohook_init | ( | struct ast_audiohook * | audiohook, | |
enum ast_audiohook_type | type, | |||
const char * | source | |||
) |
Initialize an audiohook structure.
audiohook | Audiohook structure | |
type | Type of audiohook to initialize this as | |
source | Who is initializing this audiohook |
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 | |||
) | [read] |
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 289 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(), audiohook_read_frame_single(), ast_audiohook::format, and ast_audiohook::trans_pvt.
Referenced by mixmonitor_thread(), and spy_generate().
00290 { 00291 struct ast_frame *read_frame = NULL, *final_frame = NULL; 00292 00293 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction)))) 00294 return NULL; 00295 00296 /* If they don't want signed linear back out, we'll have to send it through the translation path */ 00297 if (format != AST_FORMAT_SLINEAR) { 00298 /* Rebuild translation path if different format then previously */ 00299 if (audiohook->format != format) { 00300 if (audiohook->trans_pvt) { 00301 ast_translator_free_path(audiohook->trans_pvt); 00302 audiohook->trans_pvt = NULL; 00303 } 00304 /* 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 */ 00305 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) { 00306 ast_frfree(read_frame); 00307 return NULL; 00308 } 00309 } 00310 /* Convert to requested format, and allow the read in frame to be freed */ 00311 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1); 00312 } else { 00313 final_frame = read_frame; 00314 } 00315 00316 return final_frame; 00317 }
void ast_audiohook_trigger_wait | ( | struct ast_audiohook * | audiohook | ) |
Wait for audiohook trigger to be triggered.
audiohook | Audiohook to wait on |
Definition at line 647 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().
00648 { 00649 struct timeval tv; 00650 struct timespec ts; 00651 00652 tv = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 00653 ts.tv_sec = tv.tv_sec; 00654 ts.tv_nsec = tv.tv_usec * 1000; 00655 00656 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts); 00657 00658 return; 00659 }
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_log(), ast_slinfactory_available(), ast_slinfactory_feed(), ast_slinfactory_flush(), ast_test_flag, 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 00134 /* Update last feeding time to be current */ 00135 *time = ast_tvnow(); 00136 00137 /* 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 */ 00138 if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && ast_slinfactory_available(other_factory) && (ast_tvdiff_ms(*time, previous_time) > (ast_slinfactory_available(other_factory) / 8))) { 00139 if (option_debug) 00140 ast_log(LOG_DEBUG, "Flushing audiohook %p so it remains in sync\n", audiohook); 00141 ast_slinfactory_flush(factory); 00142 ast_slinfactory_flush(other_factory); 00143 } 00144 00145 /* Write frame out to respective factory */ 00146 ast_slinfactory_feed(factory, frame); 00147 00148 /* If we need to notify the respective handler of this audiohook, do so */ 00149 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) { 00150 ast_cond_signal(&audiohook->trigger); 00151 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) { 00152 ast_cond_signal(&audiohook->trigger); 00153 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) { 00154 ast_cond_signal(&audiohook->trigger); 00155 } 00156 00157 return 0; 00158 }
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 | |||
) | [read] |
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 632 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().
00633 { 00634 /* Pass off frame to it's respective list write function */ 00635 if (frame->frametype == AST_FRAME_VOICE) 00636 return audio_audiohook_write_list(chan, audiohook_list, direction, frame); 00637 else if (frame->frametype == AST_FRAME_DTMF) 00638 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame); 00639 else 00640 return frame; 00641 }