#include "asterisk.h"
#include <signal.h>
#include "asterisk/channel.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/linkedlists.h"
#include "asterisk/audiohook.h"
#include "asterisk/slinfactory.h"
#include "asterisk/frame.h"
#include "asterisk/translate.h"
Go to the source code of this file.
Data Structures | |
struct | ast_audiohook_list |
struct | ast_audiohook_translate |
struct | audiohook_volume |
Audiohook volume adjustment structure. More... | |
Functions | |
int | ast_audiohook_attach (struct ast_channel *chan, struct ast_audiohook *audiohook) |
Attach audiohook to channel. | |
int | ast_audiohook_destroy (struct ast_audiohook *audiohook) |
Destroys an audiohook structure. | |
int | ast_audiohook_detach (struct ast_audiohook *audiohook) |
Detach audiohook from channel. | |
int | ast_audiohook_detach_list (struct ast_audiohook_list *audiohook_list) |
Detach audiohooks from list and destroy said list. | |
int | ast_audiohook_detach_source (struct ast_channel *chan, const char *source) |
Detach specified source audiohook from channel. | |
int | ast_audiohook_init (struct ast_audiohook *audiohook, enum ast_audiohook_type type, const char *source) |
Initialize an audiohook structure. | |
void | ast_audiohook_move_by_source (struct ast_channel *old_chan, struct ast_channel *new_chan, const char *source) |
Move an audiohook from one channel to a new one. | |
ast_frame * | ast_audiohook_read_frame (struct ast_audiohook *audiohook, size_t samples, enum ast_audiohook_direction direction, int format) |
Reads a frame in from the audiohook structure. | |
int | ast_audiohook_remove (struct ast_channel *chan, struct ast_audiohook *audiohook) |
Remove an audiohook from a specified channel. | |
void | ast_audiohook_trigger_wait (struct ast_audiohook *audiohook) |
Wait for audiohook trigger to be triggered. | |
void | ast_audiohook_update_status (struct ast_audiohook *audiohook, enum ast_audiohook_status status) |
Update audiohook's status. | |
int | ast_audiohook_volume_adjust (struct ast_channel *chan, enum ast_audiohook_direction direction, int volume) |
Adjust the volume on frames read from or written to a channel. | |
int | ast_audiohook_volume_get (struct ast_channel *chan, enum ast_audiohook_direction direction) |
Retrieve the volume adjustment value on frames read from or written to a channel. | |
int | ast_audiohook_volume_set (struct ast_channel *chan, enum ast_audiohook_direction direction, int volume) |
Adjust the volume on frames read from or written to a channel. | |
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. | |
int | ast_channel_audiohook_count_by_source (struct ast_channel *chan, const char *source, enum ast_audiohook_type type) |
Find out how many audiohooks from a certain source exist on a given channel, regardless of status. | |
int | ast_channel_audiohook_count_by_source_running (struct ast_channel *chan, const char *source, enum ast_audiohook_type type) |
Find out how many spies of a certain type exist on a given channel, and are in state running. | |
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 int | audiohook_volume_callback (struct ast_audiohook *audiohook, struct ast_channel *chan, struct ast_frame *frame, enum ast_audiohook_direction direction) |
Helper function which actually gets called by audiohooks to perform the adjustment. | |
static void | audiohook_volume_destroy (void *data) |
Callback used to destroy the audiohook volume datastore. | |
static struct audiohook_volume * | audiohook_volume_get (struct ast_channel *chan, int create) |
Helper function which finds and optionally creates an audiohook_volume_datastore datastore on a channel. | |
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) |
find an audiohook based on its source | |
Variables | |
static struct ast_datastore_info | audiohook_volume_datastore |
Datastore used to store audiohook volume information. |
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 330 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_RUNNING, AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_audiohook_update_status(), ast_calloc, ast_channel_lock, ast_channel_unlock, AST_LIST_HEAD_INIT_NOLOCK, AST_LIST_INSERT_TAIL, ast_channel::audiohooks, chan, ast_audiohook_list::manipulate_list, ast_audiohook_list::spy_list, ast_audiohook::type, and ast_audiohook_list::whisper_list.
Referenced by ast_audiohook_move_by_source(), audiohook_volume_get(), enable_jack_hook(), speex_write(), start_spying(), startmon(), and volume_write().
00331 { 00332 ast_channel_lock(chan); 00333 00334 if (!chan->audiohooks) { 00335 /* Whoops... allocate a new structure */ 00336 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) { 00337 ast_channel_unlock(chan); 00338 return -1; 00339 } 00340 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list); 00341 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list); 00342 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list); 00343 } 00344 00345 /* Drop into respective list */ 00346 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00347 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list); 00348 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00349 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list); 00350 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00351 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list); 00352 00353 /* Change status over to running since it is now attached */ 00354 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_RUNNING); 00355 00356 ast_channel_unlock(chan); 00357 00358 return 0; 00359 }
int ast_audiohook_destroy | ( | struct ast_audiohook * | audiohook | ) |
Destroys an audiohook structure.
audiohook | Audiohook structure |
Definition at line 91 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 audiohook_volume_destroy(), channel_spy(), destroy_callback(), destroy_jack_data(), destroy_monitor_audiohook(), and launch_monitor_thread().
00092 { 00093 /* Drop the factories used by this audiohook type */ 00094 switch (audiohook->type) { 00095 case AST_AUDIOHOOK_TYPE_SPY: 00096 ast_slinfactory_destroy(&audiohook->read_factory); 00097 case AST_AUDIOHOOK_TYPE_WHISPER: 00098 ast_slinfactory_destroy(&audiohook->write_factory); 00099 break; 00100 default: 00101 break; 00102 } 00103 00104 /* Destroy translation path if present */ 00105 if (audiohook->trans_pvt) 00106 ast_translator_free_path(audiohook->trans_pvt); 00107 00108 /* Lock and trigger be gone! */ 00109 ast_cond_destroy(&audiohook->trigger); 00110 ast_mutex_destroy(&audiohook->lock); 00111 00112 return 0; 00113 }
int ast_audiohook_detach | ( | struct ast_audiohook * | audiohook | ) |
Detach audiohook from channel.
audiohook | Audiohook structure |
Definition at line 383 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_NEW, AST_AUDIOHOOK_STATUS_SHUTDOWN, ast_audiohook_trigger_wait(), ast_audiohook_update_status(), and ast_audiohook::status.
Referenced by channel_spy(), destroy_monitor_audiohook(), disable_jack_hook(), and speex_write().
00384 { 00385 if (audiohook->status == AST_AUDIOHOOK_STATUS_NEW || audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00386 return 0; 00387 00388 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_SHUTDOWN); 00389 00390 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00391 ast_audiohook_trigger_wait(audiohook); 00392 00393 return 0; 00394 }
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 400 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, ast_audiohook_update_status(), ast_free, AST_LIST_REMOVE_HEAD, ast_translator_free_path(), ast_audiohook_list::in_translate, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook_list::out_translate, ast_audiohook_list::spy_list, ast_audiohook_translate::trans_pvt, and ast_audiohook_list::whisper_list.
Referenced by ast_hangup().
00401 { 00402 int i = 0; 00403 struct ast_audiohook *audiohook = NULL; 00404 00405 /* Drop any spies */ 00406 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->spy_list, list))) { 00407 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00408 } 00409 00410 /* Drop any whispering sources */ 00411 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->whisper_list, list))) { 00412 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00413 } 00414 00415 /* Drop any manipulaters */ 00416 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->manipulate_list, list))) { 00417 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00418 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00419 } 00420 00421 /* Drop translation paths if present */ 00422 for (i = 0; i < 2; i++) { 00423 if (audiohook_list->in_translate[i].trans_pvt) 00424 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt); 00425 if (audiohook_list->out_translate[i].trans_pvt) 00426 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt); 00427 } 00428 00429 /* Free ourselves */ 00430 ast_free(audiohook_list); 00431 00432 return 0; 00433 }
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 491 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_SHUTDOWN, ast_audiohook_update_status(), ast_channel_lock, ast_channel_unlock, ast_channel::audiohooks, chan, find_audiohook_by_source(), and ast_audiohook::status.
Referenced by handle_cli_mixmonitor(), and stop_mixmonitor_exec().
00492 { 00493 struct ast_audiohook *audiohook = NULL; 00494 00495 ast_channel_lock(chan); 00496 00497 /* Ensure the channel has audiohooks on it */ 00498 if (!chan->audiohooks) { 00499 ast_channel_unlock(chan); 00500 return -1; 00501 } 00502 00503 audiohook = find_audiohook_by_source(chan->audiohooks, source); 00504 00505 ast_channel_unlock(chan); 00506 00507 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00508 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_SHUTDOWN); 00509 00510 return (audiohook ? 0 : -1); 00511 }
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 60 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_NEW, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_audiohook_update_status(), ast_cond_init(), ast_mutex_init(), and ast_slinfactory_init().
Referenced by audiohook_volume_get(), channel_spy(), enable_jack_hook(), launch_monitor_thread(), speex_write(), and volume_write().
00061 { 00062 /* Need to keep the type and source */ 00063 audiohook->type = type; 00064 audiohook->source = source; 00065 00066 /* Initialize lock that protects our audiohook */ 00067 ast_mutex_init(&audiohook->lock); 00068 ast_cond_init(&audiohook->trigger, NULL); 00069 00070 /* Setup the factories that are needed for this audiohook type */ 00071 switch (type) { 00072 case AST_AUDIOHOOK_TYPE_SPY: 00073 ast_slinfactory_init(&audiohook->read_factory); 00074 case AST_AUDIOHOOK_TYPE_WHISPER: 00075 ast_slinfactory_init(&audiohook->write_factory); 00076 break; 00077 default: 00078 break; 00079 } 00080 00081 /* Since we are just starting out... this audiohook is new */ 00082 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_NEW); 00083 00084 return 0; 00085 }
void ast_audiohook_move_by_source | ( | struct ast_channel * | old_chan, | |
struct ast_channel * | new_chan, | |||
const char * | source | |||
) |
Move an audiohook from one channel to a new one.
old_chan | The source of the audiohook to move | |
new_chan | The destination to which we want the audiohook to move | |
source | The source of the audiohook we want to move |
Definition at line 462 of file audiohook.c.
References ast_audiohook_attach(), ast_audiohook_lock, ast_audiohook_remove(), ast_audiohook_unlock, ast_channel::audiohooks, find_audiohook_by_source(), and ast_audiohook::status.
Referenced by audiohook_inheritance_fixup().
00463 { 00464 struct ast_audiohook *audiohook; 00465 enum ast_audiohook_status oldstatus; 00466 00467 if (!old_chan->audiohooks || !(audiohook = find_audiohook_by_source(old_chan->audiohooks, source))) { 00468 return; 00469 } 00470 00471 /* By locking both channels and the audiohook, we can assure that 00472 * another thread will not have a chance to read the audiohook's status 00473 * as done, even though ast_audiohook_remove signals the trigger 00474 * condition. 00475 */ 00476 ast_audiohook_lock(audiohook); 00477 oldstatus = audiohook->status; 00478 00479 ast_audiohook_remove(old_chan, audiohook); 00480 ast_audiohook_attach(new_chan, audiohook); 00481 00482 audiohook->status = oldstatus; 00483 ast_audiohook_unlock(audiohook); 00484 }
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 295 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(), and read_frame().
Referenced by mixmonitor_thread(), and spy_generate().
00296 { 00297 struct ast_frame *read_frame = NULL, *final_frame = NULL; 00298 00299 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction)))) 00300 return NULL; 00301 00302 /* If they don't want signed linear back out, we'll have to send it through the translation path */ 00303 if (format != AST_FORMAT_SLINEAR) { 00304 /* Rebuild translation path if different format then previously */ 00305 if (audiohook->format != format) { 00306 if (audiohook->trans_pvt) { 00307 ast_translator_free_path(audiohook->trans_pvt); 00308 audiohook->trans_pvt = NULL; 00309 } 00310 /* 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 */ 00311 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) { 00312 ast_frfree(read_frame); 00313 return NULL; 00314 } 00315 } 00316 /* Convert to requested format, and allow the read in frame to be freed */ 00317 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1); 00318 } else { 00319 final_frame = read_frame; 00320 } 00321 00322 return final_frame; 00323 }
int ast_audiohook_remove | ( | struct ast_channel * | chan, | |
struct ast_audiohook * | audiohook | |||
) |
Remove an audiohook from a specified channel.
chan | Channel to remove from | |
audiohook | Audiohook to remove |
Definition at line 523 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, ast_audiohook_update_status(), ast_channel_lock, ast_channel_unlock, AST_LIST_REMOVE, ast_channel::audiohooks, chan, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook_list::spy_list, ast_audiohook::type, and ast_audiohook_list::whisper_list.
Referenced by ast_audiohook_move_by_source(), and speex_write().
00524 { 00525 ast_channel_lock(chan); 00526 00527 if (!chan->audiohooks) { 00528 ast_channel_unlock(chan); 00529 return -1; 00530 } 00531 00532 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00533 AST_LIST_REMOVE(&chan->audiohooks->spy_list, audiohook, list); 00534 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00535 AST_LIST_REMOVE(&chan->audiohooks->whisper_list, audiohook, list); 00536 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00537 AST_LIST_REMOVE(&chan->audiohooks->manipulate_list, audiohook, list); 00538 00539 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00540 00541 ast_channel_unlock(chan); 00542 00543 return 0; 00544 }
void ast_audiohook_trigger_wait | ( | struct ast_audiohook * | audiohook | ) |
Wait for audiohook trigger to be triggered.
audiohook | Audiohook to wait on |
Definition at line 748 of file audiohook.c.
References ast_cond_timedwait(), ast_samp2tv(), ast_tvadd(), ast_tvnow(), ast_audiohook::lock, and ast_audiohook::trigger.
Referenced by ast_audiohook_detach(), and mixmonitor_thread().
00749 { 00750 struct timeval wait; 00751 struct timespec ts; 00752 00753 wait = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 00754 ts.tv_sec = wait.tv_sec; 00755 ts.tv_nsec = wait.tv_usec * 1000; 00756 00757 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts); 00758 00759 return; 00760 }
void ast_audiohook_update_status | ( | struct ast_audiohook * | audiohook, | |
enum ast_audiohook_status | status | |||
) |
Update audiohook's status.
audiohook | status enum | |
audiohook | Audiohook structure |
Definition at line 369 of file audiohook.c.
References ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, ast_audiohook_unlock, ast_cond_signal(), ast_audiohook::status, and ast_audiohook::trigger.
Referenced by ast_audiohook_attach(), ast_audiohook_detach(), ast_audiohook_detach_list(), ast_audiohook_detach_source(), ast_audiohook_init(), ast_audiohook_remove(), audio_audiohook_write_list(), and dtmf_audiohook_write_list().
00370 { 00371 ast_audiohook_lock(audiohook); 00372 if (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) { 00373 audiohook->status = status; 00374 ast_cond_signal(&audiohook->trigger); 00375 } 00376 ast_audiohook_unlock(audiohook); 00377 }
int ast_audiohook_volume_adjust | ( | struct ast_channel * | chan, | |
enum ast_audiohook_direction | direction, | |||
int | volume | |||
) |
Adjust the volume on frames read from or written to a channel.
chan | Channel to muck with | |
direction | Direction to increase | |
volume | Value to adjust the adjustment by |
Definition at line 1008 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_BOTH, AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, audiohook_volume_get(), chan, audiohook_volume::read_adjustment, and audiohook_volume::write_adjustment.
01009 { 01010 struct audiohook_volume *audiohook_volume = NULL; 01011 01012 /* Attempt to find the audiohook volume information, and create an audiohook if none exists */ 01013 if (!(audiohook_volume = audiohook_volume_get(chan, 1))) { 01014 return -1; 01015 } 01016 01017 /* Based on the direction change the specific adjustment value */ 01018 if (direction == AST_AUDIOHOOK_DIRECTION_READ || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 01019 audiohook_volume->read_adjustment += volume; 01020 } 01021 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 01022 audiohook_volume->write_adjustment += volume; 01023 } 01024 01025 return 0; 01026 }
int ast_audiohook_volume_get | ( | struct ast_channel * | chan, | |
enum ast_audiohook_direction | direction | |||
) |
Retrieve the volume adjustment value on frames read from or written to a channel.
chan | Channel to retrieve volume adjustment from | |
direction | Direction to retrieve |
Definition at line 982 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, audiohook_volume_get(), chan, audiohook_volume::read_adjustment, and audiohook_volume::write_adjustment.
00983 { 00984 struct audiohook_volume *audiohook_volume = NULL; 00985 int adjustment = 0; 00986 00987 /* Attempt to find the audiohook volume information, but do not create it as we only want to look at the values */ 00988 if (!(audiohook_volume = audiohook_volume_get(chan, 0))) { 00989 return 0; 00990 } 00991 00992 /* Grab the adjustment value based on direction given */ 00993 if (direction == AST_AUDIOHOOK_DIRECTION_READ) { 00994 adjustment = audiohook_volume->read_adjustment; 00995 } else if (direction == AST_AUDIOHOOK_DIRECTION_WRITE) { 00996 adjustment = audiohook_volume->write_adjustment; 00997 } 00998 00999 return adjustment; 01000 }
int ast_audiohook_volume_set | ( | struct ast_channel * | chan, | |
enum ast_audiohook_direction | direction, | |||
int | volume | |||
) |
Adjust the volume on frames read from or written to a channel.
chan | Channel to muck with | |
direction | Direction to set on | |
volume | Value to adjust the volume by |
Definition at line 957 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_BOTH, AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, audiohook_volume_get(), chan, audiohook_volume::read_adjustment, and audiohook_volume::write_adjustment.
00958 { 00959 struct audiohook_volume *audiohook_volume = NULL; 00960 00961 /* Attempt to find the audiohook volume information, but only create it if we are not setting the adjustment value to zero */ 00962 if (!(audiohook_volume = audiohook_volume_get(chan, (volume ? 1 : 0)))) { 00963 return -1; 00964 } 00965 00966 /* Now based on the direction set the proper value */ 00967 if (direction == AST_AUDIOHOOK_DIRECTION_READ || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 00968 audiohook_volume->read_adjustment = volume; 00969 } 00970 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 00971 audiohook_volume->write_adjustment = volume; 00972 } 00973 00974 return 0; 00975 }
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 121 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, AST_AUDIOHOOK_SMALL_QUEUE, AST_AUDIOHOOK_SYNC_TOLERANCE, AST_AUDIOHOOK_TRIGGER_MODE, AST_AUDIOHOOK_TRIGGER_READ, AST_AUDIOHOOK_TRIGGER_SYNC, AST_AUDIOHOOK_TRIGGER_WRITE, ast_cond_signal(), ast_log(), ast_slinfactory_available(), ast_slinfactory_feed(), ast_slinfactory_flush(), ast_test_flag, ast_tvdiff_ms(), ast_tvnow(), LOG_DEBUG, option_debug, ast_audiohook::read_factory, ast_audiohook::read_time, ast_audiohook::trigger, ast_audiohook::write_factory, and ast_audiohook::write_time.
Referenced by audio_audiohook_write_list(), and channel_spy().
00122 { 00123 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00124 struct ast_slinfactory *other_factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->write_factory : &audiohook->read_factory); 00125 struct timeval *rwtime = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_time : &audiohook->write_time), previous_time = *rwtime; 00126 int our_factory_samples; 00127 int our_factory_ms; 00128 int other_factory_samples; 00129 int other_factory_ms; 00130 00131 /* Update last feeding time to be current */ 00132 *rwtime = ast_tvnow(); 00133 00134 our_factory_samples = ast_slinfactory_available(factory); 00135 our_factory_ms = ast_tvdiff_ms(*rwtime, previous_time) + (our_factory_samples / 8); 00136 other_factory_samples = ast_slinfactory_available(other_factory); 00137 other_factory_ms = other_factory_samples / 8; 00138 00139 if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && other_factory_samples && (our_factory_ms - other_factory_ms > AST_AUDIOHOOK_SYNC_TOLERANCE)) { 00140 if (option_debug) 00141 ast_log(LOG_DEBUG, "Flushing audiohook %p so it remains in sync\n", audiohook); 00142 ast_slinfactory_flush(factory); 00143 ast_slinfactory_flush(other_factory); 00144 } 00145 00146 if (ast_test_flag(audiohook, AST_AUDIOHOOK_SMALL_QUEUE) && (our_factory_samples > 640 || other_factory_samples > 640)) { 00147 if (option_debug) { 00148 ast_log(LOG_DEBUG, "Audiohook %p has stale audio in its factories. Flushing them both\n", audiohook); 00149 } 00150 ast_slinfactory_flush(factory); 00151 ast_slinfactory_flush(other_factory); 00152 } 00153 00154 /* Write frame out to respective factory */ 00155 ast_slinfactory_feed(factory, frame); 00156 00157 /* If we need to notify the respective handler of this audiohook, do so */ 00158 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) { 00159 ast_cond_signal(&audiohook->trigger); 00160 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) { 00161 ast_cond_signal(&audiohook->trigger); 00162 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) { 00163 ast_cond_signal(&audiohook->trigger); 00164 } 00165 00166 return 0; 00167 }
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 733 of file audiohook.c.
References AST_FRAME_DTMF, AST_FRAME_VOICE, audio_audiohook_write_list(), chan, dtmf_audiohook_write_list(), and ast_frame::frametype.
Referenced by __ast_read(), and ast_write().
00734 { 00735 /* Pass off frame to it's respective list write function */ 00736 if (frame->frametype == AST_FRAME_VOICE) 00737 return audio_audiohook_write_list(chan, audiohook_list, direction, frame); 00738 else if (frame->frametype == AST_FRAME_DTMF) 00739 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame); 00740 else 00741 return frame; 00742 }
int ast_channel_audiohook_count_by_source | ( | struct ast_channel * | chan, | |
const char * | source, | |||
enum ast_audiohook_type | type | |||
) |
Find out how many audiohooks from a certain source exist on a given channel, regardless of status.
chan | The channel on which to find the spies | |
source | The audiohook's source | |
type | The type of audiohook |
Definition at line 763 of file audiohook.c.
References AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), ast_channel::audiohooks, chan, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook::source, ast_audiohook_list::spy_list, and ast_audiohook_list::whisper_list.
Referenced by builtin_automixmonitor().
00764 { 00765 int count = 0; 00766 struct ast_audiohook *ah = NULL; 00767 00768 if (!chan->audiohooks) 00769 return -1; 00770 00771 switch (type) { 00772 case AST_AUDIOHOOK_TYPE_SPY: 00773 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->spy_list, ah, list) { 00774 if (!strcmp(ah->source, source)) { 00775 count++; 00776 } 00777 } 00778 AST_LIST_TRAVERSE_SAFE_END; 00779 break; 00780 case AST_AUDIOHOOK_TYPE_WHISPER: 00781 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->whisper_list, ah, list) { 00782 if (!strcmp(ah->source, source)) { 00783 count++; 00784 } 00785 } 00786 AST_LIST_TRAVERSE_SAFE_END; 00787 break; 00788 case AST_AUDIOHOOK_TYPE_MANIPULATE: 00789 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->manipulate_list, ah, list) { 00790 if (!strcmp(ah->source, source)) { 00791 count++; 00792 } 00793 } 00794 AST_LIST_TRAVERSE_SAFE_END; 00795 break; 00796 default: 00797 ast_log(LOG_DEBUG, "Invalid audiohook type supplied, (%d)\n", type); 00798 return -1; 00799 } 00800 00801 return count; 00802 }
int ast_channel_audiohook_count_by_source_running | ( | struct ast_channel * | chan, | |
const char * | source, | |||
enum ast_audiohook_type | type | |||
) |
Find out how many spies of a certain type exist on a given channel, and are in state running.
chan | The channel on which to find the spies | |
source | The source of the audiohook | |
type | The type of spy to look for |
Definition at line 805 of file audiohook.c.
References AST_AUDIOHOOK_STATUS_RUNNING, AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_TYPE_SPY, AST_AUDIOHOOK_TYPE_WHISPER, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_log(), ast_channel::audiohooks, chan, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook::source, ast_audiohook_list::spy_list, ast_audiohook::status, and ast_audiohook_list::whisper_list.
Referenced by builtin_automixmonitor().
00806 { 00807 int count = 0; 00808 struct ast_audiohook *ah = NULL; 00809 if (!chan->audiohooks) 00810 return -1; 00811 00812 switch (type) { 00813 case AST_AUDIOHOOK_TYPE_SPY: 00814 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->spy_list, ah, list) { 00815 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00816 count++; 00817 } 00818 AST_LIST_TRAVERSE_SAFE_END; 00819 break; 00820 case AST_AUDIOHOOK_TYPE_WHISPER: 00821 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->whisper_list, ah, list) { 00822 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00823 count++; 00824 } 00825 AST_LIST_TRAVERSE_SAFE_END; 00826 break; 00827 case AST_AUDIOHOOK_TYPE_MANIPULATE: 00828 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->manipulate_list, ah, list) { 00829 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00830 count++; 00831 } 00832 AST_LIST_TRAVERSE_SAFE_END; 00833 break; 00834 default: 00835 ast_log(LOG_DEBUG, "Invalid audiohook type supplied, (%d)\n", type); 00836 return -1; 00837 } 00838 return count; 00839 }
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.
This function has 3 ast_frames and 3 parts to handle each. At the beginning of this function all 3 frames, start_frame, middle_frame, and end_frame point to the initial input frame.
Part_1: Translate the start_frame into SLINEAR audio if it is not already in that format. The result of this part is middle_frame is guaranteed to be in SLINEAR format for Part_2. Part_2: Send middle_frame off to spies and manipulators. At this point middle_frame is either a new frame as result of the translation, or points directly to the start_frame because no translation to SLINEAR audio was required. The result of this part is end_frame will be updated to point to middle_frame if any audiohook manipulation took place. Part_3: Translate end_frame's audio back into the format of start frame if necessary. At this point if middle_frame != end_frame, we are guaranteed that no manipulation took place and middle_frame can be freed as it was translated... If middle_frame was not translated and still pointed to start_frame, it would be equal to end_frame as well regardless if manipulation took place which would not result in this free. The result of this part is end_frame is guaranteed to be the format of start_frame for the return.
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 604 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_update_status(), ast_audiohook_write_frame(), 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(), chan, ast_audiohook_translate::format, ast_audiohook_list::in_translate, ast_audiohook::list, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, ast_audiohook_list::out_translate, ast_frame::samples, ast_audiohook_list::spy_list, ast_audiohook::status, ast_frame::subclass, ast_audiohook_translate::trans_pvt, ast_audiohook_list::whisper_list, and ast_audiohook::write_factory.
Referenced by ast_audiohook_write_list().
00605 { 00606 struct ast_audiohook_translate *in_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->in_translate[0] : &audiohook_list->in_translate[1]); 00607 struct ast_audiohook_translate *out_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->out_translate[0] : &audiohook_list->out_translate[1]); 00608 struct ast_frame *start_frame = frame, *middle_frame = frame, *end_frame = frame; 00609 struct ast_audiohook *audiohook = NULL; 00610 int samples = frame->samples; 00611 00612 /* ---Part_1. translate start_frame to SLINEAR if necessary. */ 00613 /* If the frame coming in is not signed linear we have to send it through the in_translate path */ 00614 if (frame->subclass != AST_FORMAT_SLINEAR) { 00615 if (in_translate->format != frame->subclass) { 00616 if (in_translate->trans_pvt) 00617 ast_translator_free_path(in_translate->trans_pvt); 00618 if (!(in_translate->trans_pvt = ast_translator_build_path(AST_FORMAT_SLINEAR, frame->subclass))) 00619 return frame; 00620 in_translate->format = frame->subclass; 00621 } 00622 if (!(middle_frame = ast_translate(in_translate->trans_pvt, frame, 0))) 00623 return frame; 00624 samples = middle_frame->samples; 00625 } 00626 00627 /* ---Part_2: Send middle_frame to spy and manipulator lists. middle_frame is guaranteed to be SLINEAR here.*/ 00628 /* Queue up signed linear frame to each spy */ 00629 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00630 ast_audiohook_lock(audiohook); 00631 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00632 AST_LIST_REMOVE_CURRENT(list); 00633 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00634 ast_audiohook_unlock(audiohook); 00635 continue; 00636 } 00637 ast_audiohook_write_frame(audiohook, direction, middle_frame); 00638 ast_audiohook_unlock(audiohook); 00639 } 00640 AST_LIST_TRAVERSE_SAFE_END; 00641 00642 /* If this frame is being written out to the channel then we need to use whisper sources */ 00643 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE && !AST_LIST_EMPTY(&audiohook_list->whisper_list)) { 00644 int i = 0; 00645 short read_buf[samples], combine_buf[samples], *data1 = NULL, *data2 = NULL; 00646 memset(&combine_buf, 0, sizeof(combine_buf)); 00647 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00648 ast_audiohook_lock(audiohook); 00649 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00650 AST_LIST_REMOVE_CURRENT(list); 00651 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00652 ast_audiohook_unlock(audiohook); 00653 continue; 00654 } 00655 if (ast_slinfactory_available(&audiohook->write_factory) >= samples && ast_slinfactory_read(&audiohook->write_factory, read_buf, samples)) { 00656 /* Take audio from this whisper source and combine it into our main buffer */ 00657 for (i = 0, data1 = combine_buf, data2 = read_buf; i < samples; i++, data1++, data2++) 00658 ast_slinear_saturated_add(data1, data2); 00659 } 00660 ast_audiohook_unlock(audiohook); 00661 } 00662 AST_LIST_TRAVERSE_SAFE_END; 00663 /* We take all of the combined whisper sources and combine them into the audio being written out */ 00664 for (i = 0, data1 = middle_frame->data.ptr, data2 = combine_buf; i < samples; i++, data1++, data2++) 00665 ast_slinear_saturated_add(data1, data2); 00666 end_frame = middle_frame; 00667 } 00668 00669 /* Pass off frame to manipulate audiohooks */ 00670 if (!AST_LIST_EMPTY(&audiohook_list->manipulate_list)) { 00671 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00672 ast_audiohook_lock(audiohook); 00673 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00674 AST_LIST_REMOVE_CURRENT(list); 00675 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00676 ast_audiohook_unlock(audiohook); 00677 /* We basically drop all of our links to the manipulate audiohook and prod it to do it's own destructive things */ 00678 audiohook->manipulate_callback(audiohook, chan, NULL, direction); 00679 continue; 00680 } 00681 /* Feed in frame to manipulation. */ 00682 if (audiohook->manipulate_callback(audiohook, chan, middle_frame, direction)) { 00683 /* XXX IGNORE FAILURE */ 00684 00685 /* If the manipulation fails then the frame will be returned in its original state. 00686 * Since there are potentially more manipulator callbacks in the list, no action should 00687 * be taken here to exit early. */ 00688 } 00689 ast_audiohook_unlock(audiohook); 00690 } 00691 AST_LIST_TRAVERSE_SAFE_END; 00692 end_frame = middle_frame; 00693 } 00694 00695 /* ---Part_3: Decide what to do with the end_frame (whether to transcode or not) */ 00696 if (middle_frame == end_frame) { 00697 /* Middle frame was modified and became the end frame... let's see if we need to transcode */ 00698 if (end_frame->subclass != start_frame->subclass) { 00699 if (out_translate->format != start_frame->subclass) { 00700 if (out_translate->trans_pvt) 00701 ast_translator_free_path(out_translate->trans_pvt); 00702 if (!(out_translate->trans_pvt = ast_translator_build_path(start_frame->subclass, AST_FORMAT_SLINEAR))) { 00703 /* We can't transcode this... drop our middle frame and return the original */ 00704 ast_frfree(middle_frame); 00705 return start_frame; 00706 } 00707 out_translate->format = start_frame->subclass; 00708 } 00709 /* Transcode from our middle (signed linear) frame to new format of the frame that came in */ 00710 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) { 00711 /* Failed to transcode the frame... drop it and return the original */ 00712 ast_frfree(middle_frame); 00713 return start_frame; 00714 } 00715 /* Here's the scoop... middle frame is no longer of use to us */ 00716 ast_frfree(middle_frame); 00717 } 00718 } else { 00719 /* No frame was modified, we can just drop our middle frame and pass the frame we got in out */ 00720 ast_frfree(middle_frame); 00721 } 00722 00723 return end_frame; 00724 }
static struct ast_frame* audiohook_read_frame_both | ( | struct ast_audiohook * | audiohook, | |
size_t | samples | |||
) | [static] |
Definition at line 197 of file audiohook.c.
References ast_debug, AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_log(), ast_slinear_saturated_divide(), ast_slinear_saturated_multiply(), ast_slinfactory_available(), ast_slinfactory_read(), ast_tvdiff_ms(), ast_tvnow(), ast_frame::frametype, LOG_DEBUG, option_debug, ast_audiohook::options, ast_audiohook::read_factory, ast_audiohook::read_time, ast_audiohook_options::read_volume, ast_audiohook::write_factory, ast_audiohook::write_time, and ast_audiohook_options::write_volume.
Referenced by ast_audiohook_read_frame().
00198 { 00199 int i = 0, usable_read, usable_write; 00200 short buf1[samples], buf2[samples], *read_buf = NULL, *write_buf = NULL, *final_buf = NULL, *data1 = NULL, *data2 = NULL; 00201 struct ast_frame frame = { 00202 .frametype = AST_FRAME_VOICE, 00203 .subclass = AST_FORMAT_SLINEAR, 00204 .data.ptr = NULL, 00205 .datalen = sizeof(buf1), 00206 .samples = samples, 00207 }; 00208 00209 /* Make sure both factories have the required samples */ 00210 usable_read = (ast_slinfactory_available(&audiohook->read_factory) >= samples ? 1 : 0); 00211 usable_write = (ast_slinfactory_available(&audiohook->write_factory) >= samples ? 1 : 0); 00212 00213 if (!usable_read && !usable_write) { 00214 /* If both factories are unusable bail out */ 00215 ast_debug(1, "Read factory %p and write factory %p both fail to provide %zd samples\n", &audiohook->read_factory, &audiohook->write_factory, samples); 00216 return NULL; 00217 } 00218 00219 /* If we want to provide only a read factory make sure we aren't waiting for other audio */ 00220 if (usable_read && !usable_write && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) { 00221 ast_debug(3, "Write factory %p was pretty quick last time, waiting for them.\n", &audiohook->write_factory); 00222 return NULL; 00223 } 00224 00225 /* If we want to provide only a write factory make sure we aren't waiting for other audio */ 00226 if (usable_write && !usable_read && (ast_tvdiff_ms(ast_tvnow(), audiohook->read_time) < (samples/8)*2)) { 00227 ast_debug(3, "Read factory %p was pretty quick last time, waiting for them.\n", &audiohook->read_factory); 00228 return NULL; 00229 } 00230 00231 /* Start with the read factory... if there are enough samples, read them in */ 00232 if (usable_read) { 00233 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) { 00234 read_buf = buf1; 00235 /* Adjust read volume if need be */ 00236 if (audiohook->options.read_volume) { 00237 int count = 0; 00238 short adjust_value = abs(audiohook->options.read_volume); 00239 for (count = 0; count < samples; count++) { 00240 if (audiohook->options.read_volume > 0) 00241 ast_slinear_saturated_multiply(&buf1[count], &adjust_value); 00242 else if (audiohook->options.read_volume < 0) 00243 ast_slinear_saturated_divide(&buf1[count], &adjust_value); 00244 } 00245 } 00246 } 00247 } else if (option_debug) 00248 ast_log(LOG_DEBUG, "Failed to get %d samples from read factory %p\n", (int)samples, &audiohook->read_factory); 00249 00250 /* Move on to the write factory... if there are enough samples, read them in */ 00251 if (usable_write) { 00252 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) { 00253 write_buf = buf2; 00254 /* Adjust write volume if need be */ 00255 if (audiohook->options.write_volume) { 00256 int count = 0; 00257 short adjust_value = abs(audiohook->options.write_volume); 00258 for (count = 0; count < samples; count++) { 00259 if (audiohook->options.write_volume > 0) 00260 ast_slinear_saturated_multiply(&buf2[count], &adjust_value); 00261 else if (audiohook->options.write_volume < 0) 00262 ast_slinear_saturated_divide(&buf2[count], &adjust_value); 00263 } 00264 } 00265 } 00266 } else if (option_debug) 00267 ast_log(LOG_DEBUG, "Failed to get %d samples from write factory %p\n", (int)samples, &audiohook->write_factory); 00268 00269 /* Basically we figure out which buffer to use... and if mixing can be done here */ 00270 if (!read_buf && !write_buf) 00271 return NULL; 00272 else if (read_buf && write_buf) { 00273 for (i = 0, data1 = read_buf, data2 = write_buf; i < samples; i++, data1++, data2++) 00274 ast_slinear_saturated_add(data1, data2); 00275 final_buf = buf1; 00276 } else if (read_buf) 00277 final_buf = buf1; 00278 else if (write_buf) 00279 final_buf = buf2; 00280 00281 /* Make the final buffer part of the frame, so it gets duplicated fine */ 00282 frame.data.ptr = final_buf; 00283 00284 /* Yahoo, a combined copy of the audio! */ 00285 return ast_frdup(&frame); 00286 }
static struct ast_frame* audiohook_read_frame_single | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Definition at line 169 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(), buf, 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().
00170 { 00171 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00172 int vol = (direction == AST_AUDIOHOOK_DIRECTION_READ ? audiohook->options.read_volume : audiohook->options.write_volume); 00173 short buf[samples]; 00174 struct ast_frame frame = { 00175 .frametype = AST_FRAME_VOICE, 00176 .subclass = AST_FORMAT_SLINEAR, 00177 .data.ptr = buf, 00178 .datalen = sizeof(buf), 00179 .samples = samples, 00180 }; 00181 00182 /* Ensure the factory is able to give us the samples we want */ 00183 if (samples > ast_slinfactory_available(factory)) 00184 return NULL; 00185 00186 /* Read data in from factory */ 00187 if (!ast_slinfactory_read(factory, buf, samples)) 00188 return NULL; 00189 00190 /* If a volume adjustment needs to be applied apply it */ 00191 if (vol) 00192 ast_frame_adjust_volume(&frame, vol); 00193 00194 return ast_frdup(&frame); 00195 }
static int audiohook_volume_callback | ( | struct ast_audiohook * | audiohook, | |
struct ast_channel * | chan, | |||
struct ast_frame * | frame, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Helper function which actually gets called by audiohooks to perform the adjustment.
audiohook | Audiohook attached to the channel | |
chan | Channel we are attached to | |
frame | Frame of audio we want to manipulate | |
direction | Direction the audio came in from |
Definition at line 878 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, AST_AUDIOHOOK_STATUS_DONE, ast_channel_datastore_find(), ast_frame_adjust_volume(), audiohook_volume::audiohook, audiohook_volume_datastore, chan, ast_datastore::data, audiohook_volume::read_adjustment, ast_audiohook::status, and audiohook_volume::write_adjustment.
Referenced by audiohook_volume_get().
00879 { 00880 struct ast_datastore *datastore = NULL; 00881 struct audiohook_volume *audiohook_volume = NULL; 00882 int *gain = NULL; 00883 00884 /* If the audiohook is shutting down don't even bother */ 00885 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) { 00886 return 0; 00887 } 00888 00889 /* Try to find the datastore containg adjustment information, if we can't just bail out */ 00890 if (!(datastore = ast_channel_datastore_find(chan, &audiohook_volume_datastore, NULL))) { 00891 return 0; 00892 } 00893 00894 audiohook_volume = datastore->data; 00895 00896 /* Based on direction grab the appropriate adjustment value */ 00897 if (direction == AST_AUDIOHOOK_DIRECTION_READ) { 00898 gain = &audiohook_volume->read_adjustment; 00899 } else if (direction == AST_AUDIOHOOK_DIRECTION_WRITE) { 00900 gain = &audiohook_volume->write_adjustment; 00901 } 00902 00903 /* If an adjustment value is present modify the frame */ 00904 if (gain && *gain) { 00905 ast_frame_adjust_volume(frame, *gain); 00906 } 00907 00908 return 0; 00909 }
static void audiohook_volume_destroy | ( | void * | data | ) | [static] |
Callback used to destroy the audiohook volume datastore.
data | Volume information structure |
Definition at line 852 of file audiohook.c.
References ast_audiohook_destroy(), ast_free, and audiohook_volume::audiohook.
00853 { 00854 struct audiohook_volume *audiohook_volume = data; 00855 00856 /* Destroy the audiohook as it is no longer in use */ 00857 ast_audiohook_destroy(&audiohook_volume->audiohook); 00858 00859 /* Finally free ourselves, we are of no more use */ 00860 ast_free(audiohook_volume); 00861 00862 return; 00863 }
static struct audiohook_volume* audiohook_volume_get | ( | struct ast_channel * | chan, | |
int | create | |||
) | [static] |
Helper function which finds and optionally creates an audiohook_volume_datastore datastore on a channel.
chan | Channel to look on | |
create | Whether to create the datastore if not found |
Definition at line 916 of file audiohook.c.
References ast_audiohook_attach(), ast_audiohook_init(), AST_AUDIOHOOK_TYPE_MANIPULATE, ast_calloc, ast_channel_datastore_add(), ast_channel_datastore_find(), ast_datastore_alloc, ast_datastore_free(), audiohook_volume_callback(), audiohook_volume_datastore, chan, and ast_datastore::data.
Referenced by ast_audiohook_volume_adjust(), ast_audiohook_volume_get(), and ast_audiohook_volume_set().
00917 { 00918 struct ast_datastore *datastore = NULL; 00919 struct audiohook_volume *audiohook_volume = NULL; 00920 00921 /* If we are able to find the datastore return the contents (which is actually an audiohook_volume structure) */ 00922 if ((datastore = ast_channel_datastore_find(chan, &audiohook_volume_datastore, NULL))) { 00923 return datastore->data; 00924 } 00925 00926 /* If we are not allowed to create a datastore or if we fail to create a datastore, bail out now as we have nothing for them */ 00927 if (!create || !(datastore = ast_datastore_alloc(&audiohook_volume_datastore, NULL))) { 00928 return NULL; 00929 } 00930 00931 /* Create a new audiohook_volume structure to contain our adjustments and audiohook */ 00932 if (!(audiohook_volume = ast_calloc(1, sizeof(*audiohook_volume)))) { 00933 ast_datastore_free(datastore); 00934 return NULL; 00935 } 00936 00937 /* Setup our audiohook structure so we can manipulate the audio */ 00938 ast_audiohook_init(&audiohook_volume->audiohook, AST_AUDIOHOOK_TYPE_MANIPULATE, "Volume"); 00939 audiohook_volume->audiohook.manipulate_callback = audiohook_volume_callback; 00940 00941 /* Attach the audiohook_volume blob to the datastore and attach to the channel */ 00942 datastore->data = audiohook_volume; 00943 ast_channel_datastore_add(chan, datastore); 00944 00945 /* All is well... put the audiohook into motion */ 00946 ast_audiohook_attach(chan, &audiohook_volume->audiohook); 00947 00948 return audiohook_volume; 00949 }
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 553 of file audiohook.c.
References ast_audiohook_lock, AST_AUDIOHOOK_STATUS_DONE, AST_AUDIOHOOK_STATUS_RUNNING, ast_audiohook_unlock, ast_audiohook_update_status(), AST_AUDIOHOOK_WANTS_DTMF, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_test_flag, chan, ast_audiohook::list, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, and ast_audiohook::status.
Referenced by ast_audiohook_write_list().
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(list); 00561 ast_audiohook_update_status(audiohook, 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 }
static struct ast_audiohook* find_audiohook_by_source | ( | struct ast_audiohook_list * | audiohook_list, | |
const char * | source | |||
) | [static] |
find an audiohook based on its source
audiohook_list | The list of audiohooks to search in | |
source | The source of the audiohook we wish to find |
Definition at line 440 of file audiohook.c.
References AST_LIST_TRAVERSE, ast_audiohook::list, ast_audiohook_list::manipulate_list, ast_audiohook::source, ast_audiohook_list::spy_list, and ast_audiohook_list::whisper_list.
Referenced by ast_audiohook_detach_source(), and ast_audiohook_move_by_source().
00441 { 00442 struct ast_audiohook *audiohook = NULL; 00443 00444 AST_LIST_TRAVERSE(&audiohook_list->spy_list, audiohook, list) { 00445 if (!strcasecmp(audiohook->source, source)) 00446 return audiohook; 00447 } 00448 00449 AST_LIST_TRAVERSE(&audiohook_list->whisper_list, audiohook, list) { 00450 if (!strcasecmp(audiohook->source, source)) 00451 return audiohook; 00452 } 00453 00454 AST_LIST_TRAVERSE(&audiohook_list->manipulate_list, audiohook, list) { 00455 if (!strcasecmp(audiohook->source, source)) 00456 return audiohook; 00457 } 00458 00459 return NULL; 00460 }
struct ast_datastore_info audiohook_volume_datastore [static] |
Initial value:
{ .type = "Volume", .destroy = audiohook_volume_destroy, }
Definition at line 866 of file audiohook.c.
Referenced by audiohook_volume_callback(), and audiohook_volume_get().