#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, format_t 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. | |
int | ast_audiohook_set_mute (struct ast_channel *chan, const char *source, enum ast_audiohook_flags flag, int clear) |
Mute frames read from or written to a 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_audiohook_write_list_empty (struct ast_audiohook_list *audiohook_list) |
determines if a audiohook_list is empty or not. | |
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 342 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, 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(), mute_add_audiohook(), pitchshift_helper(), speex_write(), start_spying(), startmon(), and volume_write().
00343 { 00344 ast_channel_lock(chan); 00345 00346 if (!chan->audiohooks) { 00347 /* Whoops... allocate a new structure */ 00348 if (!(chan->audiohooks = ast_calloc(1, sizeof(*chan->audiohooks)))) { 00349 ast_channel_unlock(chan); 00350 return -1; 00351 } 00352 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->spy_list); 00353 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->whisper_list); 00354 AST_LIST_HEAD_INIT_NOLOCK(&chan->audiohooks->manipulate_list); 00355 } 00356 00357 /* Drop into respective list */ 00358 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00359 AST_LIST_INSERT_TAIL(&chan->audiohooks->spy_list, audiohook, list); 00360 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00361 AST_LIST_INSERT_TAIL(&chan->audiohooks->whisper_list, audiohook, list); 00362 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00363 AST_LIST_INSERT_TAIL(&chan->audiohooks->manipulate_list, audiohook, list); 00364 00365 /* Change status over to running since it is now attached */ 00366 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_RUNNING); 00367 00368 ast_channel_unlock(chan); 00369 00370 return 0; 00371 }
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 395 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().
00396 { 00397 if (audiohook->status == AST_AUDIOHOOK_STATUS_NEW || audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00398 return 0; 00399 00400 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_SHUTDOWN); 00401 00402 while (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00403 ast_audiohook_trigger_wait(audiohook); 00404 00405 return 0; 00406 }
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 412 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_read(), ast_hangup(), and ast_write().
00413 { 00414 int i = 0; 00415 struct ast_audiohook *audiohook = NULL; 00416 00417 /* Drop any spies */ 00418 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->spy_list, list))) { 00419 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00420 } 00421 00422 /* Drop any whispering sources */ 00423 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->whisper_list, list))) { 00424 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00425 } 00426 00427 /* Drop any manipulaters */ 00428 while ((audiohook = AST_LIST_REMOVE_HEAD(&audiohook_list->manipulate_list, list))) { 00429 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00430 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00431 } 00432 00433 /* Drop translation paths if present */ 00434 for (i = 0; i < 2; i++) { 00435 if (audiohook_list->in_translate[i].trans_pvt) 00436 ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt); 00437 if (audiohook_list->out_translate[i].trans_pvt) 00438 ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt); 00439 } 00440 00441 /* Free ourselves */ 00442 ast_free(audiohook_list); 00443 00444 return 0; 00445 }
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 503 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, find_audiohook_by_source(), and ast_audiohook::status.
Referenced by handle_cli_mixmonitor(), and stop_mixmonitor_exec().
00504 { 00505 struct ast_audiohook *audiohook = NULL; 00506 00507 ast_channel_lock(chan); 00508 00509 /* Ensure the channel has audiohooks on it */ 00510 if (!chan->audiohooks) { 00511 ast_channel_unlock(chan); 00512 return -1; 00513 } 00514 00515 audiohook = find_audiohook_by_source(chan->audiohooks, source); 00516 00517 ast_channel_unlock(chan); 00518 00519 if (audiohook && audiohook->status != AST_AUDIOHOOK_STATUS_DONE) 00520 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_SHUTDOWN); 00521 00522 return (audiohook ? 0 : -1); 00523 }
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(), initialize_mutehook(), launch_monitor_thread(), pitchshift_helper(), 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 474 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().
00475 { 00476 struct ast_audiohook *audiohook; 00477 enum ast_audiohook_status oldstatus; 00478 00479 if (!old_chan->audiohooks || !(audiohook = find_audiohook_by_source(old_chan->audiohooks, source))) { 00480 return; 00481 } 00482 00483 /* By locking both channels and the audiohook, we can assure that 00484 * another thread will not have a chance to read the audiohook's status 00485 * as done, even though ast_audiohook_remove signals the trigger 00486 * condition. 00487 */ 00488 ast_audiohook_lock(audiohook); 00489 oldstatus = audiohook->status; 00490 00491 ast_audiohook_remove(old_chan, audiohook); 00492 ast_audiohook_attach(new_chan, audiohook); 00493 00494 audiohook->status = oldstatus; 00495 ast_audiohook_unlock(audiohook); 00496 }
struct ast_frame* ast_audiohook_read_frame | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction, | |||
format_t | 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 307 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().
00308 { 00309 struct ast_frame *read_frame = NULL, *final_frame = NULL; 00310 00311 if (!(read_frame = (direction == AST_AUDIOHOOK_DIRECTION_BOTH ? audiohook_read_frame_both(audiohook, samples) : audiohook_read_frame_single(audiohook, samples, direction)))) 00312 return NULL; 00313 00314 /* If they don't want signed linear back out, we'll have to send it through the translation path */ 00315 if (format != AST_FORMAT_SLINEAR) { 00316 /* Rebuild translation path if different format then previously */ 00317 if (audiohook->format != format) { 00318 if (audiohook->trans_pvt) { 00319 ast_translator_free_path(audiohook->trans_pvt); 00320 audiohook->trans_pvt = NULL; 00321 } 00322 /* 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 */ 00323 if (!(audiohook->trans_pvt = ast_translator_build_path(format, AST_FORMAT_SLINEAR))) { 00324 ast_frfree(read_frame); 00325 return NULL; 00326 } 00327 } 00328 /* Convert to requested format, and allow the read in frame to be freed */ 00329 final_frame = ast_translate(audiohook->trans_pvt, read_frame, 1); 00330 } else { 00331 final_frame = read_frame; 00332 } 00333 00334 return final_frame; 00335 }
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 535 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, 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().
00536 { 00537 ast_channel_lock(chan); 00538 00539 if (!chan->audiohooks) { 00540 ast_channel_unlock(chan); 00541 return -1; 00542 } 00543 00544 if (audiohook->type == AST_AUDIOHOOK_TYPE_SPY) 00545 AST_LIST_REMOVE(&chan->audiohooks->spy_list, audiohook, list); 00546 else if (audiohook->type == AST_AUDIOHOOK_TYPE_WHISPER) 00547 AST_LIST_REMOVE(&chan->audiohooks->whisper_list, audiohook, list); 00548 else if (audiohook->type == AST_AUDIOHOOK_TYPE_MANIPULATE) 00549 AST_LIST_REMOVE(&chan->audiohooks->manipulate_list, audiohook, list); 00550 00551 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00552 00553 ast_channel_unlock(chan); 00554 00555 return 0; 00556 }
int ast_audiohook_set_mute | ( | struct ast_channel * | chan, | |
const char * | source, | |||
enum ast_audiohook_flags | flag, | |||
int | clear | |||
) |
Mute frames read from or written to a channel.
chan | Channel to muck with | |
source | Type of audiohook | |
flag | which flag to set / clear | |
clear | set or clear |
Definition at line 1057 of file audiohook.c.
References ast_channel_lock, ast_channel_unlock, ast_clear_flag, ast_set_flag, ast_channel::audiohooks, and find_audiohook_by_source().
Referenced by manager_mute_mixmonitor().
01058 { 01059 struct ast_audiohook *audiohook = NULL; 01060 01061 ast_channel_lock(chan); 01062 01063 /* Ensure the channel has audiohooks on it */ 01064 if (!chan->audiohooks) { 01065 ast_channel_unlock(chan); 01066 return -1; 01067 } 01068 01069 audiohook = find_audiohook_by_source(chan->audiohooks, source); 01070 01071 if (audiohook) { 01072 if (clear) { 01073 ast_clear_flag(audiohook, flag); 01074 } else { 01075 ast_set_flag(audiohook, flag); 01076 } 01077 } 01078 01079 ast_channel_unlock(chan); 01080 01081 return (audiohook ? 0 : -1); 01082 }
void ast_audiohook_trigger_wait | ( | struct ast_audiohook * | audiohook | ) |
Wait for audiohook trigger to be triggered.
audiohook | Audiohook to wait on |
Definition at line 770 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().
00771 { 00772 struct timeval wait; 00773 struct timespec ts; 00774 00775 wait = ast_tvadd(ast_tvnow(), ast_samp2tv(50000, 1000)); 00776 ts.tv_sec = wait.tv_sec; 00777 ts.tv_nsec = wait.tv_usec * 1000; 00778 00779 ast_cond_timedwait(&audiohook->trigger, &audiohook->lock, &ts); 00780 00781 return; 00782 }
void ast_audiohook_update_status | ( | struct ast_audiohook * | audiohook, | |
enum ast_audiohook_status | status | |||
) |
Update audiohook's status.
audiohook | Audiohook structure | |
status | Audiohook status enum |
Definition at line 381 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().
00382 { 00383 ast_audiohook_lock(audiohook); 00384 if (audiohook->status != AST_AUDIOHOOK_STATUS_DONE) { 00385 audiohook->status = status; 00386 ast_cond_signal(&audiohook->trigger); 00387 } 00388 ast_audiohook_unlock(audiohook); 00389 }
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 1030 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_BOTH, AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, audiohook_volume_get(), audiohook_volume::read_adjustment, and audiohook_volume::write_adjustment.
Referenced by menu_callback().
01031 { 01032 struct audiohook_volume *audiohook_volume = NULL; 01033 01034 /* Attempt to find the audiohook volume information, and create an audiohook if none exists */ 01035 if (!(audiohook_volume = audiohook_volume_get(chan, 1))) { 01036 return -1; 01037 } 01038 01039 /* Based on the direction change the specific adjustment value */ 01040 if (direction == AST_AUDIOHOOK_DIRECTION_READ || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 01041 audiohook_volume->read_adjustment += volume; 01042 } 01043 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 01044 audiohook_volume->write_adjustment += volume; 01045 } 01046 01047 return 0; 01048 }
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 1004 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, audiohook_volume_get(), audiohook_volume::read_adjustment, and audiohook_volume::write_adjustment.
Referenced by confbridge_exec().
01005 { 01006 struct audiohook_volume *audiohook_volume = NULL; 01007 int adjustment = 0; 01008 01009 /* Attempt to find the audiohook volume information, but do not create it as we only want to look at the values */ 01010 if (!(audiohook_volume = audiohook_volume_get(chan, 0))) { 01011 return 0; 01012 } 01013 01014 /* Grab the adjustment value based on direction given */ 01015 if (direction == AST_AUDIOHOOK_DIRECTION_READ) { 01016 adjustment = audiohook_volume->read_adjustment; 01017 } else if (direction == AST_AUDIOHOOK_DIRECTION_WRITE) { 01018 adjustment = audiohook_volume->write_adjustment; 01019 } 01020 01021 return adjustment; 01022 }
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 979 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_BOTH, AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_DIRECTION_WRITE, audiohook_volume_get(), audiohook_volume::read_adjustment, and audiohook_volume::write_adjustment.
Referenced by confbridge_exec().
00980 { 00981 struct audiohook_volume *audiohook_volume = NULL; 00982 00983 /* Attempt to find the audiohook volume information, but only create it if we are not setting the adjustment value to zero */ 00984 if (!(audiohook_volume = audiohook_volume_get(chan, (volume ? 1 : 0)))) { 00985 return -1; 00986 } 00987 00988 /* Now based on the direction set the proper value */ 00989 if (direction == AST_AUDIOHOOK_DIRECTION_READ || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 00990 audiohook_volume->read_adjustment = volume; 00991 } 00992 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE || direction == AST_AUDIOHOOK_DIRECTION_BOTH) { 00993 audiohook_volume->write_adjustment = volume; 00994 } 00995 00996 return 0; 00997 }
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_MUTE_READ, AST_AUDIOHOOK_MUTE_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_frame_clear(), ast_log(), ast_slinfactory_available(), ast_slinfactory_feed(), ast_slinfactory_flush(), ast_test_flag, ast_tvdiff_ms(), ast_tvnow(), ast_frame::datalen, 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 int muteme = 0; 00131 00132 /* Update last feeding time to be current */ 00133 *rwtime = ast_tvnow(); 00134 00135 our_factory_samples = ast_slinfactory_available(factory); 00136 our_factory_ms = ast_tvdiff_ms(*rwtime, previous_time) + (our_factory_samples / 8); 00137 other_factory_samples = ast_slinfactory_available(other_factory); 00138 other_factory_ms = other_factory_samples / 8; 00139 00140 if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC) && other_factory_samples && (our_factory_ms - other_factory_ms > AST_AUDIOHOOK_SYNC_TOLERANCE)) { 00141 if (option_debug) 00142 ast_log(LOG_DEBUG, "Flushing audiohook %p so it remains in sync\n", audiohook); 00143 ast_slinfactory_flush(factory); 00144 ast_slinfactory_flush(other_factory); 00145 } 00146 00147 if (ast_test_flag(audiohook, AST_AUDIOHOOK_SMALL_QUEUE) && (our_factory_samples > 640 || other_factory_samples > 640)) { 00148 if (option_debug) { 00149 ast_log(LOG_DEBUG, "Audiohook %p has stale audio in its factories. Flushing them both\n", audiohook); 00150 } 00151 ast_slinfactory_flush(factory); 00152 ast_slinfactory_flush(other_factory); 00153 } 00154 00155 /* swap frame data for zeros if mute is required */ 00156 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_MUTE_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) || 00157 (ast_test_flag(audiohook, AST_AUDIOHOOK_MUTE_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) || 00158 (ast_test_flag(audiohook, AST_AUDIOHOOK_MUTE_READ | AST_AUDIOHOOK_MUTE_WRITE) == (AST_AUDIOHOOK_MUTE_READ | AST_AUDIOHOOK_MUTE_WRITE))) { 00159 muteme = 1; 00160 } 00161 00162 if (muteme && frame->datalen > 0) { 00163 ast_frame_clear(frame); 00164 } 00165 00166 /* Write frame out to respective factory */ 00167 ast_slinfactory_feed(factory, frame); 00168 00169 /* If we need to notify the respective handler of this audiohook, do so */ 00170 if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_READ) && (direction == AST_AUDIOHOOK_DIRECTION_READ)) { 00171 ast_cond_signal(&audiohook->trigger); 00172 } else if ((ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_MODE) == AST_AUDIOHOOK_TRIGGER_WRITE) && (direction == AST_AUDIOHOOK_DIRECTION_WRITE)) { 00173 ast_cond_signal(&audiohook->trigger); 00174 } else if (ast_test_flag(audiohook, AST_AUDIOHOOK_TRIGGER_SYNC)) { 00175 ast_cond_signal(&audiohook->trigger); 00176 } 00177 00178 return 0; 00179 }
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 756 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().
00757 { 00758 /* Pass off frame to it's respective list write function */ 00759 if (frame->frametype == AST_FRAME_VOICE) 00760 return audio_audiohook_write_list(chan, audiohook_list, direction, frame); 00761 else if (frame->frametype == AST_FRAME_DTMF) 00762 return dtmf_audiohook_write_list(chan, audiohook_list, direction, frame); 00763 else 00764 return frame; 00765 }
int ast_audiohook_write_list_empty | ( | struct ast_audiohook_list * | audiohook_list | ) |
determines if a audiohook_list is empty or not.
retval 0 false, 1 true
Definition at line 738 of file audiohook.c.
References AST_LIST_EMPTY, ast_audiohook_list::manipulate_list, ast_audiohook_list::spy_list, and ast_audiohook_list::whisper_list.
Referenced by __ast_read(), and ast_write().
00739 { 00740 if (AST_LIST_EMPTY(&audiohook_list->spy_list) && 00741 AST_LIST_EMPTY(&audiohook_list->whisper_list) && 00742 AST_LIST_EMPTY(&audiohook_list->manipulate_list)) { 00743 00744 return 1; 00745 } 00746 return 0; 00747 }
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 785 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, 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().
00786 { 00787 int count = 0; 00788 struct ast_audiohook *ah = NULL; 00789 00790 if (!chan->audiohooks) 00791 return -1; 00792 00793 switch (type) { 00794 case AST_AUDIOHOOK_TYPE_SPY: 00795 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->spy_list, ah, list) { 00796 if (!strcmp(ah->source, source)) { 00797 count++; 00798 } 00799 } 00800 AST_LIST_TRAVERSE_SAFE_END; 00801 break; 00802 case AST_AUDIOHOOK_TYPE_WHISPER: 00803 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->whisper_list, ah, list) { 00804 if (!strcmp(ah->source, source)) { 00805 count++; 00806 } 00807 } 00808 AST_LIST_TRAVERSE_SAFE_END; 00809 break; 00810 case AST_AUDIOHOOK_TYPE_MANIPULATE: 00811 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->manipulate_list, ah, list) { 00812 if (!strcmp(ah->source, source)) { 00813 count++; 00814 } 00815 } 00816 AST_LIST_TRAVERSE_SAFE_END; 00817 break; 00818 default: 00819 ast_log(LOG_DEBUG, "Invalid audiohook type supplied, (%d)\n", type); 00820 return -1; 00821 } 00822 00823 return count; 00824 }
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 827 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, 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().
00828 { 00829 int count = 0; 00830 struct ast_audiohook *ah = NULL; 00831 if (!chan->audiohooks) 00832 return -1; 00833 00834 switch (type) { 00835 case AST_AUDIOHOOK_TYPE_SPY: 00836 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->spy_list, ah, list) { 00837 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00838 count++; 00839 } 00840 AST_LIST_TRAVERSE_SAFE_END; 00841 break; 00842 case AST_AUDIOHOOK_TYPE_WHISPER: 00843 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->whisper_list, ah, list) { 00844 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00845 count++; 00846 } 00847 AST_LIST_TRAVERSE_SAFE_END; 00848 break; 00849 case AST_AUDIOHOOK_TYPE_MANIPULATE: 00850 AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->audiohooks->manipulate_list, ah, list) { 00851 if ((!strcmp(ah->source, source)) && (ah->status == AST_AUDIOHOOK_STATUS_RUNNING)) 00852 count++; 00853 } 00854 AST_LIST_TRAVERSE_SAFE_END; 00855 break; 00856 default: 00857 ast_log(LOG_DEBUG, "Invalid audiohook type supplied, (%d)\n", type); 00858 return -1; 00859 } 00860 return count; 00861 }
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 616 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(), ast_frame_subclass::codec, 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().
00617 { 00618 struct ast_audiohook_translate *in_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->in_translate[0] : &audiohook_list->in_translate[1]); 00619 struct ast_audiohook_translate *out_translate = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook_list->out_translate[0] : &audiohook_list->out_translate[1]); 00620 struct ast_frame *start_frame = frame, *middle_frame = frame, *end_frame = frame; 00621 struct ast_audiohook *audiohook = NULL; 00622 int samples = frame->samples; 00623 00624 /* ---Part_1. translate start_frame to SLINEAR if necessary. */ 00625 /* If the frame coming in is not signed linear we have to send it through the in_translate path */ 00626 if (frame->subclass.codec != AST_FORMAT_SLINEAR) { 00627 if (in_translate->format != frame->subclass.codec) { 00628 if (in_translate->trans_pvt) 00629 ast_translator_free_path(in_translate->trans_pvt); 00630 if (!(in_translate->trans_pvt = ast_translator_build_path(AST_FORMAT_SLINEAR, frame->subclass.codec))) 00631 return frame; 00632 in_translate->format = frame->subclass.codec; 00633 } 00634 if (!(middle_frame = ast_translate(in_translate->trans_pvt, frame, 0))) 00635 return frame; 00636 samples = middle_frame->samples; 00637 } 00638 00639 /* ---Part_2: Send middle_frame to spy and manipulator lists. middle_frame is guaranteed to be SLINEAR here.*/ 00640 /* Queue up signed linear frame to each spy */ 00641 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->spy_list, audiohook, list) { 00642 ast_audiohook_lock(audiohook); 00643 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00644 AST_LIST_REMOVE_CURRENT(list); 00645 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00646 ast_audiohook_unlock(audiohook); 00647 continue; 00648 } 00649 ast_audiohook_write_frame(audiohook, direction, middle_frame); 00650 ast_audiohook_unlock(audiohook); 00651 } 00652 AST_LIST_TRAVERSE_SAFE_END; 00653 00654 /* If this frame is being written out to the channel then we need to use whisper sources */ 00655 if (direction == AST_AUDIOHOOK_DIRECTION_WRITE && !AST_LIST_EMPTY(&audiohook_list->whisper_list)) { 00656 int i = 0; 00657 short read_buf[samples], combine_buf[samples], *data1 = NULL, *data2 = NULL; 00658 memset(&combine_buf, 0, sizeof(combine_buf)); 00659 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->whisper_list, audiohook, list) { 00660 ast_audiohook_lock(audiohook); 00661 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00662 AST_LIST_REMOVE_CURRENT(list); 00663 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00664 ast_audiohook_unlock(audiohook); 00665 continue; 00666 } 00667 if (ast_slinfactory_available(&audiohook->write_factory) >= samples && ast_slinfactory_read(&audiohook->write_factory, read_buf, samples)) { 00668 /* Take audio from this whisper source and combine it into our main buffer */ 00669 for (i = 0, data1 = combine_buf, data2 = read_buf; i < samples; i++, data1++, data2++) 00670 ast_slinear_saturated_add(data1, data2); 00671 } 00672 ast_audiohook_unlock(audiohook); 00673 } 00674 AST_LIST_TRAVERSE_SAFE_END; 00675 /* We take all of the combined whisper sources and combine them into the audio being written out */ 00676 for (i = 0, data1 = middle_frame->data.ptr, data2 = combine_buf; i < samples; i++, data1++, data2++) 00677 ast_slinear_saturated_add(data1, data2); 00678 end_frame = middle_frame; 00679 } 00680 00681 /* Pass off frame to manipulate audiohooks */ 00682 if (!AST_LIST_EMPTY(&audiohook_list->manipulate_list)) { 00683 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00684 ast_audiohook_lock(audiohook); 00685 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00686 AST_LIST_REMOVE_CURRENT(list); 00687 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00688 ast_audiohook_unlock(audiohook); 00689 /* We basically drop all of our links to the manipulate audiohook and prod it to do it's own destructive things */ 00690 audiohook->manipulate_callback(audiohook, chan, NULL, direction); 00691 continue; 00692 } 00693 /* Feed in frame to manipulation. */ 00694 if (audiohook->manipulate_callback(audiohook, chan, middle_frame, direction)) { 00695 /* XXX IGNORE FAILURE */ 00696 00697 /* If the manipulation fails then the frame will be returned in its original state. 00698 * Since there are potentially more manipulator callbacks in the list, no action should 00699 * be taken here to exit early. */ 00700 } 00701 ast_audiohook_unlock(audiohook); 00702 } 00703 AST_LIST_TRAVERSE_SAFE_END; 00704 end_frame = middle_frame; 00705 } 00706 00707 /* ---Part_3: Decide what to do with the end_frame (whether to transcode or not) */ 00708 if (middle_frame == end_frame) { 00709 /* Middle frame was modified and became the end frame... let's see if we need to transcode */ 00710 if (end_frame->subclass.codec != start_frame->subclass.codec) { 00711 if (out_translate->format != start_frame->subclass.codec) { 00712 if (out_translate->trans_pvt) 00713 ast_translator_free_path(out_translate->trans_pvt); 00714 if (!(out_translate->trans_pvt = ast_translator_build_path(start_frame->subclass.codec, AST_FORMAT_SLINEAR))) { 00715 /* We can't transcode this... drop our middle frame and return the original */ 00716 ast_frfree(middle_frame); 00717 return start_frame; 00718 } 00719 out_translate->format = start_frame->subclass.codec; 00720 } 00721 /* Transcode from our middle (signed linear) frame to new format of the frame that came in */ 00722 if (!(end_frame = ast_translate(out_translate->trans_pvt, middle_frame, 0))) { 00723 /* Failed to transcode the frame... drop it and return the original */ 00724 ast_frfree(middle_frame); 00725 return start_frame; 00726 } 00727 /* Here's the scoop... middle frame is no longer of use to us */ 00728 ast_frfree(middle_frame); 00729 } 00730 } else { 00731 /* No frame was modified, we can just drop our middle frame and pass the frame we got in out */ 00732 ast_frfree(middle_frame); 00733 } 00734 00735 return end_frame; 00736 }
static struct ast_frame* audiohook_read_frame_both | ( | struct ast_audiohook * | audiohook, | |
size_t | samples | |||
) | [static] |
Definition at line 209 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(), buf1, buf2, 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().
00210 { 00211 int i = 0, usable_read, usable_write; 00212 short buf1[samples], buf2[samples], *read_buf = NULL, *write_buf = NULL, *final_buf = NULL, *data1 = NULL, *data2 = NULL; 00213 struct ast_frame frame = { 00214 .frametype = AST_FRAME_VOICE, 00215 .subclass.codec = AST_FORMAT_SLINEAR, 00216 .data.ptr = NULL, 00217 .datalen = sizeof(buf1), 00218 .samples = samples, 00219 }; 00220 00221 /* Make sure both factories have the required samples */ 00222 usable_read = (ast_slinfactory_available(&audiohook->read_factory) >= samples ? 1 : 0); 00223 usable_write = (ast_slinfactory_available(&audiohook->write_factory) >= samples ? 1 : 0); 00224 00225 if (!usable_read && !usable_write) { 00226 /* If both factories are unusable bail out */ 00227 ast_debug(1, "Read factory %p and write factory %p both fail to provide %zd samples\n", &audiohook->read_factory, &audiohook->write_factory, samples); 00228 return NULL; 00229 } 00230 00231 /* If we want to provide only a read factory make sure we aren't waiting for other audio */ 00232 if (usable_read && !usable_write && (ast_tvdiff_ms(ast_tvnow(), audiohook->write_time) < (samples/8)*2)) { 00233 ast_debug(3, "Write factory %p was pretty quick last time, waiting for them.\n", &audiohook->write_factory); 00234 return NULL; 00235 } 00236 00237 /* If we want to provide only a write factory make sure we aren't waiting for other audio */ 00238 if (usable_write && !usable_read && (ast_tvdiff_ms(ast_tvnow(), audiohook->read_time) < (samples/8)*2)) { 00239 ast_debug(3, "Read factory %p was pretty quick last time, waiting for them.\n", &audiohook->read_factory); 00240 return NULL; 00241 } 00242 00243 /* Start with the read factory... if there are enough samples, read them in */ 00244 if (usable_read) { 00245 if (ast_slinfactory_read(&audiohook->read_factory, buf1, samples)) { 00246 read_buf = buf1; 00247 /* Adjust read volume if need be */ 00248 if (audiohook->options.read_volume) { 00249 int count = 0; 00250 short adjust_value = abs(audiohook->options.read_volume); 00251 for (count = 0; count < samples; count++) { 00252 if (audiohook->options.read_volume > 0) 00253 ast_slinear_saturated_multiply(&buf1[count], &adjust_value); 00254 else if (audiohook->options.read_volume < 0) 00255 ast_slinear_saturated_divide(&buf1[count], &adjust_value); 00256 } 00257 } 00258 } 00259 } else if (option_debug) 00260 ast_log(LOG_DEBUG, "Failed to get %d samples from read factory %p\n", (int)samples, &audiohook->read_factory); 00261 00262 /* Move on to the write factory... if there are enough samples, read them in */ 00263 if (usable_write) { 00264 if (ast_slinfactory_read(&audiohook->write_factory, buf2, samples)) { 00265 write_buf = buf2; 00266 /* Adjust write volume if need be */ 00267 if (audiohook->options.write_volume) { 00268 int count = 0; 00269 short adjust_value = abs(audiohook->options.write_volume); 00270 for (count = 0; count < samples; count++) { 00271 if (audiohook->options.write_volume > 0) 00272 ast_slinear_saturated_multiply(&buf2[count], &adjust_value); 00273 else if (audiohook->options.write_volume < 0) 00274 ast_slinear_saturated_divide(&buf2[count], &adjust_value); 00275 } 00276 } 00277 } 00278 } else if (option_debug) 00279 ast_log(LOG_DEBUG, "Failed to get %d samples from write factory %p\n", (int)samples, &audiohook->write_factory); 00280 00281 /* Basically we figure out which buffer to use... and if mixing can be done here */ 00282 if (!read_buf && !write_buf) 00283 return NULL; 00284 else if (read_buf && write_buf) { 00285 for (i = 0, data1 = read_buf, data2 = write_buf; i < samples; i++, data1++, data2++) 00286 ast_slinear_saturated_add(data1, data2); 00287 final_buf = buf1; 00288 } else if (read_buf) 00289 final_buf = buf1; 00290 else if (write_buf) 00291 final_buf = buf2; 00292 00293 /* Make the final buffer part of the frame, so it gets duplicated fine */ 00294 frame.data.ptr = final_buf; 00295 00296 /* Yahoo, a combined copy of the audio! */ 00297 return ast_frdup(&frame); 00298 }
static struct ast_frame* audiohook_read_frame_single | ( | struct ast_audiohook * | audiohook, | |
size_t | samples, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Definition at line 181 of file audiohook.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_FORMAT_SLINEAR, ast_frame_adjust_volume(), AST_FRAME_VOICE, ast_frdup(), ast_slinfactory_available(), ast_slinfactory_read(), ast_frame::frametype, ast_audiohook::options, ast_audiohook::read_factory, ast_audiohook_options::read_volume, ast_audiohook::write_factory, and ast_audiohook_options::write_volume.
Referenced by ast_audiohook_read_frame().
00182 { 00183 struct ast_slinfactory *factory = (direction == AST_AUDIOHOOK_DIRECTION_READ ? &audiohook->read_factory : &audiohook->write_factory); 00184 int vol = (direction == AST_AUDIOHOOK_DIRECTION_READ ? audiohook->options.read_volume : audiohook->options.write_volume); 00185 short buf[samples]; 00186 struct ast_frame frame = { 00187 .frametype = AST_FRAME_VOICE, 00188 .subclass.codec = AST_FORMAT_SLINEAR, 00189 .data.ptr = buf, 00190 .datalen = sizeof(buf), 00191 .samples = samples, 00192 }; 00193 00194 /* Ensure the factory is able to give us the samples we want */ 00195 if (samples > ast_slinfactory_available(factory)) 00196 return NULL; 00197 00198 /* Read data in from factory */ 00199 if (!ast_slinfactory_read(factory, buf, samples)) 00200 return NULL; 00201 00202 /* If a volume adjustment needs to be applied apply it */ 00203 if (vol) 00204 ast_frame_adjust_volume(&frame, vol); 00205 00206 return ast_frdup(&frame); 00207 }
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 900 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, ast_datastore::data, audiohook_volume::read_adjustment, ast_audiohook::status, and audiohook_volume::write_adjustment.
Referenced by audiohook_volume_get().
00901 { 00902 struct ast_datastore *datastore = NULL; 00903 struct audiohook_volume *audiohook_volume = NULL; 00904 int *gain = NULL; 00905 00906 /* If the audiohook is shutting down don't even bother */ 00907 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) { 00908 return 0; 00909 } 00910 00911 /* Try to find the datastore containg adjustment information, if we can't just bail out */ 00912 if (!(datastore = ast_channel_datastore_find(chan, &audiohook_volume_datastore, NULL))) { 00913 return 0; 00914 } 00915 00916 audiohook_volume = datastore->data; 00917 00918 /* Based on direction grab the appropriate adjustment value */ 00919 if (direction == AST_AUDIOHOOK_DIRECTION_READ) { 00920 gain = &audiohook_volume->read_adjustment; 00921 } else if (direction == AST_AUDIOHOOK_DIRECTION_WRITE) { 00922 gain = &audiohook_volume->write_adjustment; 00923 } 00924 00925 /* If an adjustment value is present modify the frame */ 00926 if (gain && *gain) { 00927 ast_frame_adjust_volume(frame, *gain); 00928 } 00929 00930 return 0; 00931 }
static void audiohook_volume_destroy | ( | void * | data | ) | [static] |
Callback used to destroy the audiohook volume datastore.
data | Volume information structure |
Definition at line 874 of file audiohook.c.
References ast_audiohook_destroy(), ast_free, and audiohook_volume::audiohook.
00875 { 00876 struct audiohook_volume *audiohook_volume = data; 00877 00878 /* Destroy the audiohook as it is no longer in use */ 00879 ast_audiohook_destroy(&audiohook_volume->audiohook); 00880 00881 /* Finally free ourselves, we are of no more use */ 00882 ast_free(audiohook_volume); 00883 00884 return; 00885 }
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 938 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, and ast_datastore::data.
Referenced by ast_audiohook_volume_adjust(), ast_audiohook_volume_get(), and ast_audiohook_volume_set().
00939 { 00940 struct ast_datastore *datastore = NULL; 00941 struct audiohook_volume *audiohook_volume = NULL; 00942 00943 /* If we are able to find the datastore return the contents (which is actually an audiohook_volume structure) */ 00944 if ((datastore = ast_channel_datastore_find(chan, &audiohook_volume_datastore, NULL))) { 00945 return datastore->data; 00946 } 00947 00948 /* 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 */ 00949 if (!create || !(datastore = ast_datastore_alloc(&audiohook_volume_datastore, NULL))) { 00950 return NULL; 00951 } 00952 00953 /* Create a new audiohook_volume structure to contain our adjustments and audiohook */ 00954 if (!(audiohook_volume = ast_calloc(1, sizeof(*audiohook_volume)))) { 00955 ast_datastore_free(datastore); 00956 return NULL; 00957 } 00958 00959 /* Setup our audiohook structure so we can manipulate the audio */ 00960 ast_audiohook_init(&audiohook_volume->audiohook, AST_AUDIOHOOK_TYPE_MANIPULATE, "Volume"); 00961 audiohook_volume->audiohook.manipulate_callback = audiohook_volume_callback; 00962 00963 /* Attach the audiohook_volume blob to the datastore and attach to the channel */ 00964 datastore->data = audiohook_volume; 00965 ast_channel_datastore_add(chan, datastore); 00966 00967 /* All is well... put the audiohook into motion */ 00968 ast_audiohook_attach(chan, &audiohook_volume->audiohook); 00969 00970 return audiohook_volume; 00971 }
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 565 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, ast_audiohook::list, ast_audiohook::manipulate_callback, ast_audiohook_list::manipulate_list, and ast_audiohook::status.
Referenced by ast_audiohook_write_list().
00566 { 00567 struct ast_audiohook *audiohook = NULL; 00568 00569 AST_LIST_TRAVERSE_SAFE_BEGIN(&audiohook_list->manipulate_list, audiohook, list) { 00570 ast_audiohook_lock(audiohook); 00571 if (audiohook->status != AST_AUDIOHOOK_STATUS_RUNNING) { 00572 AST_LIST_REMOVE_CURRENT(list); 00573 ast_audiohook_update_status(audiohook, AST_AUDIOHOOK_STATUS_DONE); 00574 ast_audiohook_unlock(audiohook); 00575 audiohook->manipulate_callback(audiohook, NULL, NULL, 0); 00576 continue; 00577 } 00578 if (ast_test_flag(audiohook, AST_AUDIOHOOK_WANTS_DTMF)) 00579 audiohook->manipulate_callback(audiohook, chan, frame, direction); 00580 ast_audiohook_unlock(audiohook); 00581 } 00582 AST_LIST_TRAVERSE_SAFE_END; 00583 00584 return frame; 00585 }
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 452 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(), ast_audiohook_move_by_source(), and ast_audiohook_set_mute().
00453 { 00454 struct ast_audiohook *audiohook = NULL; 00455 00456 AST_LIST_TRAVERSE(&audiohook_list->spy_list, audiohook, list) { 00457 if (!strcasecmp(audiohook->source, source)) 00458 return audiohook; 00459 } 00460 00461 AST_LIST_TRAVERSE(&audiohook_list->whisper_list, audiohook, list) { 00462 if (!strcasecmp(audiohook->source, source)) 00463 return audiohook; 00464 } 00465 00466 AST_LIST_TRAVERSE(&audiohook_list->manipulate_list, audiohook, list) { 00467 if (!strcasecmp(audiohook->source, source)) 00468 return audiohook; 00469 } 00470 00471 return NULL; 00472 }
struct ast_datastore_info audiohook_volume_datastore [static] |
Initial value:
{ .type = "Volume", .destroy = audiohook_volume_destroy, }
Definition at line 888 of file audiohook.c.
Referenced by audiohook_volume_callback(), and audiohook_volume_get().