#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include "asterisk/frame.h"
#include "asterisk/channel.h"
#include "asterisk/logger.h"
#include "asterisk/term.h"
#include "asterisk/options.h"
#include "asterisk/utils.h"
#include "asterisk/abstract_jb.h"
#include "fixedjitterbuf.h"
#include "jitterbuf.h"
Go to the source code of this file.
Data Structures | |
struct | ast_jb_impl |
Jitterbuffer implementation private struct. More... | |
Defines | |
#define | jb_framelog() |
Macros for the frame log files. | |
Typedefs | |
typedef void *(*) | jb_create_impl (struct ast_jb_conf *general_config, long resynch_threshold) |
Create. | |
typedef void(*) | jb_destroy_impl (void *jb) |
Destroy. | |
typedef void(*) | jb_empty_and_reset_impl (void *jb) |
Empty and reset jb. | |
typedef void(*) | jb_force_resynch_impl (void *jb) |
Force resynch. | |
typedef int(*) | jb_get_impl (void *jb, struct ast_frame **fout, long now, long interpl) |
Get frame for now. | |
typedef long(*) | jb_next_impl (void *jb) |
Get next. | |
typedef int(*) | jb_put_first_impl (void *jb, struct ast_frame *fin, long now) |
Put first frame. | |
typedef int(*) | jb_put_impl (void *jb, struct ast_frame *fin, long now) |
Put frame. | |
typedef int(*) | jb_remove_impl (void *jb, struct ast_frame **fout) |
Remove first frame. | |
Enumerations | |
enum | { JB_USE = (1 << 0), JB_TIMEBASE_INITIALIZED = (1 << 1), JB_CREATED = (1 << 2) } |
enum | { JB_IMPL_OK, JB_IMPL_DROP, JB_IMPL_INTERP, JB_IMPL_NOFRAME } |
Functions | |
void | ast_jb_configure (struct ast_channel *chan, const struct ast_jb_conf *conf) |
Configures a jitterbuffer on a channel. | |
void | ast_jb_destroy (struct ast_channel *chan) |
Destroys jitterbuffer on a channel. | |
int | ast_jb_do_usecheck (struct ast_channel *c0, struct ast_channel *c1) |
Checks the need of a jb use in a generic bridge. | |
void | ast_jb_empty_and_reset (struct ast_channel *c0, struct ast_channel *c1) |
drops all frames from a jitterbuffer and resets it | |
void | ast_jb_get_and_deliver (struct ast_channel *c0, struct ast_channel *c1) |
Deliver the queued frames that should be delivered now for both channels. | |
void | ast_jb_get_config (const struct ast_channel *chan, struct ast_jb_conf *conf) |
Copies a channel's jitterbuffer configuration. | |
int | ast_jb_get_when_to_wakeup (struct ast_channel *c0, struct ast_channel *c1, int time_left) |
Calculates the time, left to the closest delivery moment in a bridge. | |
int | ast_jb_put (struct ast_channel *chan, struct ast_frame *f) |
Puts a frame into a channel jitterbuffer. | |
int | ast_jb_read_conf (struct ast_jb_conf *conf, char *varname, char *value) |
Sets jitterbuffer configuration property. | |
static int | create_jb (struct ast_channel *chan, struct ast_frame *first_frame) |
static long | get_now (struct ast_jb *jb, struct timeval *tv) |
static void | jb_choose_impl (struct ast_channel *chan) |
static void * | jb_create_adaptive (struct ast_jb_conf *general_config, long resynch_threshold) |
static void * | jb_create_fixed (struct ast_jb_conf *general_config, long resynch_threshold) |
static void | jb_destroy_adaptive (void *jb) |
static void | jb_destroy_fixed (void *jb) |
static void | jb_empty_and_reset_adaptive (void *jb) |
static void | jb_empty_and_reset_fixed (void *jb) |
static void | jb_force_resynch_adaptive (void *jb) |
static void | jb_force_resynch_fixed (void *jb) |
static int | jb_get_adaptive (void *jb, struct ast_frame **fout, long now, long interpl) |
static void | jb_get_and_deliver (struct ast_channel *chan) |
static int | jb_get_fixed (void *jb, struct ast_frame **fout, long now, long interpl) |
static long | jb_next_adaptive (void *jb) |
static long | jb_next_fixed (void *jb) |
static int | jb_put_adaptive (void *jb, struct ast_frame *fin, long now) |
static int | jb_put_first_adaptive (void *jb, struct ast_frame *fin, long now) |
static int | jb_put_first_fixed (void *jb, struct ast_frame *fin, long now) |
static int | jb_put_fixed (void *jb, struct ast_frame *fin, long now) |
static int | jb_remove_adaptive (void *jb, struct ast_frame **fout) |
static int | jb_remove_fixed (void *jb, struct ast_frame **fout) |
Variables | |
static int | adaptive_to_abstract_code [] |
static struct ast_jb_impl | avail_impl [] |
static int | default_impl = 0 |
static int | fixed_to_abstract_code [] |
static char * | jb_get_actions [] = {"Delivered", "Dropped", "Interpolated", "No"} |
Definition in file abstract_jb.c.
#define jb_framelog | ( | ) |
Macros for the frame log files.
Definition at line 165 of file abstract_jb.c.
Referenced by ast_jb_put(), create_jb(), and jb_get_and_deliver().
typedef void*(*) jb_create_impl(struct ast_jb_conf *general_config, long resynch_threshold) |
typedef void(*) jb_destroy_impl(void *jb) |
typedef void(*) jb_empty_and_reset_impl(void *jb) |
typedef void(*) jb_force_resynch_impl(void *jb) |
typedef int(*) jb_get_impl(void *jb, struct ast_frame **fout, long now, long interpl) |
typedef long(*) jb_next_impl(void *jb) |
typedef int(*) jb_put_first_impl(void *jb, struct ast_frame *fin, long now) |
typedef int(*) jb_put_impl(void *jb, struct ast_frame *fin, long now) |
typedef int(*) jb_remove_impl(void *jb, struct ast_frame **fout) |
anonymous enum |
Internal jb flags
Definition at line 49 of file abstract_jb.c.
00049 { 00050 JB_USE = (1 << 0), 00051 JB_TIMEBASE_INITIALIZED = (1 << 1), 00052 JB_CREATED = (1 << 2) 00053 };
anonymous enum |
Abstract return codes
Definition at line 148 of file abstract_jb.c.
00148 { 00149 JB_IMPL_OK, 00150 JB_IMPL_DROP, 00151 JB_IMPL_INTERP, 00152 JB_IMPL_NOFRAME 00153 };
void ast_jb_configure | ( | struct ast_channel * | chan, | |
const struct ast_jb_conf * | conf | |||
) |
Configures a jitterbuffer on a channel.
chan | channel to configure. | |
conf | configuration to apply. |
Definition at line 602 of file abstract_jb.c.
References ast_jb::conf, and ast_channel::jb.
Referenced by __oh323_rtp_create(), __oh323_update_info(), alsa_new(), dahdi_new(), gtalk_new(), mgcp_new(), misdn_new(), oss_new(), sip_new(), and skinny_new().
void ast_jb_destroy | ( | struct ast_channel * | chan | ) |
Destroys jitterbuffer on a channel.
chan | channel. |
Definition at line 526 of file abstract_jb.c.
References ast_clear_flag, ast_frfree, ast_test_flag, ast_verbose(), ast_jb_impl::destroy, f, ast_jb::impl, ast_channel::jb, JB_CREATED, JB_IMPL_OK, ast_jb::jbobj, ast_jb::logfile, ast_jb_impl::name, ast_channel::name, option_verbose, ast_jb_impl::remove, and VERBOSE_PREFIX_3.
Referenced by ast_channel_free().
00527 { 00528 struct ast_jb *jb = &chan->jb; 00529 struct ast_jb_impl *jbimpl = jb->impl; 00530 void *jbobj = jb->jbobj; 00531 struct ast_frame *f; 00532 00533 if (jb->logfile) { 00534 fclose(jb->logfile); 00535 jb->logfile = NULL; 00536 } 00537 00538 if (ast_test_flag(jb, JB_CREATED)) { 00539 /* Remove and free all frames still queued in jb */ 00540 while (jbimpl->remove(jbobj, &f) == JB_IMPL_OK) { 00541 ast_frfree(f); 00542 } 00543 00544 jbimpl->destroy(jbobj); 00545 jb->jbobj = NULL; 00546 00547 ast_clear_flag(jb, JB_CREATED); 00548 00549 if (option_verbose > 2) 00550 ast_verbose(VERBOSE_PREFIX_3 "%s jitterbuffer destroyed on channel %s\n", jbimpl->name, chan->name); 00551 } 00552 }
int ast_jb_do_usecheck | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) |
Checks the need of a jb use in a generic bridge.
c0 | first bridged channel. | |
c1 | second bridged channel. |
Definition at line 204 of file abstract_jb.c.
References AST_CHAN_TP_CREATESJITTER, AST_CHAN_TP_WANTSJITTER, AST_JB_ENABLED, AST_JB_FORCED, ast_set_flag, ast_test_flag, ast_jb::conf, inuse, ast_channel::jb, jb_choose_impl(), JB_CREATED, JB_TIMEBASE_INITIALIZED, JB_USE, ast_channel_tech::properties, ast_channel::tech, and ast_jb::timebase.
Referenced by ast_generic_bridge().
00205 { 00206 struct ast_jb *jb0 = &c0->jb; 00207 struct ast_jb *jb1 = &c1->jb; 00208 struct ast_jb_conf *conf0 = &jb0->conf; 00209 struct ast_jb_conf *conf1 = &jb1->conf; 00210 int c0_wants_jitter = c0->tech->properties & AST_CHAN_TP_WANTSJITTER; 00211 int c0_creates_jitter = c0->tech->properties & AST_CHAN_TP_CREATESJITTER; 00212 int c0_jb_enabled = ast_test_flag(conf0, AST_JB_ENABLED); 00213 int c0_force_jb = ast_test_flag(conf0, AST_JB_FORCED); 00214 int c0_jb_timebase_initialized = ast_test_flag(jb0, JB_TIMEBASE_INITIALIZED); 00215 int c0_jb_created = ast_test_flag(jb0, JB_CREATED); 00216 int c1_wants_jitter = c1->tech->properties & AST_CHAN_TP_WANTSJITTER; 00217 int c1_creates_jitter = c1->tech->properties & AST_CHAN_TP_CREATESJITTER; 00218 int c1_jb_enabled = ast_test_flag(conf1, AST_JB_ENABLED); 00219 int c1_force_jb = ast_test_flag(conf1, AST_JB_FORCED); 00220 int c1_jb_timebase_initialized = ast_test_flag(jb1, JB_TIMEBASE_INITIALIZED); 00221 int c1_jb_created = ast_test_flag(jb1, JB_CREATED); 00222 int inuse = 0; 00223 00224 /* Determine whether audio going to c0 needs a jitter buffer */ 00225 if (((!c0_wants_jitter && c1_creates_jitter) || (c0_force_jb && c1_creates_jitter)) && c0_jb_enabled) { 00226 ast_set_flag(jb0, JB_USE); 00227 if (!c0_jb_timebase_initialized) { 00228 if (c1_jb_timebase_initialized) { 00229 memcpy(&jb0->timebase, &jb1->timebase, sizeof(struct timeval)); 00230 } else { 00231 gettimeofday(&jb0->timebase, NULL); 00232 } 00233 ast_set_flag(jb0, JB_TIMEBASE_INITIALIZED); 00234 } 00235 00236 if (!c0_jb_created) { 00237 jb_choose_impl(c0); 00238 } 00239 00240 inuse = 1; 00241 } 00242 00243 /* Determine whether audio going to c1 needs a jitter buffer */ 00244 if (((!c1_wants_jitter && c0_creates_jitter) || (c1_force_jb && c0_creates_jitter)) && c1_jb_enabled) { 00245 ast_set_flag(jb1, JB_USE); 00246 if (!c1_jb_timebase_initialized) { 00247 if (c0_jb_timebase_initialized) { 00248 memcpy(&jb1->timebase, &jb0->timebase, sizeof(struct timeval)); 00249 } else { 00250 gettimeofday(&jb1->timebase, NULL); 00251 } 00252 ast_set_flag(jb1, JB_TIMEBASE_INITIALIZED); 00253 } 00254 00255 if (!c1_jb_created) { 00256 jb_choose_impl(c1); 00257 } 00258 00259 inuse = 1; 00260 } 00261 00262 return inuse; 00263 }
void ast_jb_empty_and_reset | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) |
drops all frames from a jitterbuffer and resets it
c0 | one channel of a bridge | |
c1 | the other channel of the bridge |
Definition at line 613 of file abstract_jb.c.
References ast_test_flag, ast_jb_impl::empty_and_reset, ast_jb::impl, ast_channel::jb, JB_CREATED, JB_USE, and ast_jb::jbobj.
Referenced by ast_generic_bridge().
00614 { 00615 struct ast_jb *jb0 = &c0->jb; 00616 struct ast_jb *jb1 = &c1->jb; 00617 int c0_use_jb = ast_test_flag(jb0, JB_USE); 00618 int c0_jb_is_created = ast_test_flag(jb0, JB_CREATED); 00619 int c1_use_jb = ast_test_flag(jb1, JB_USE); 00620 int c1_jb_is_created = ast_test_flag(jb1, JB_CREATED); 00621 00622 if (c0_use_jb && c0_jb_is_created && jb0->impl->empty_and_reset) { 00623 jb0->impl->empty_and_reset(jb0->jbobj); 00624 } 00625 00626 if (c1_use_jb && c1_jb_is_created && jb1->impl->empty_and_reset) { 00627 jb1->impl->empty_and_reset(jb1->jbobj); 00628 } 00629 }
void ast_jb_get_and_deliver | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1 | |||
) |
Deliver the queued frames that should be delivered now for both channels.
c0 | first bridged channel. | |
c1 | second bridged channel. |
Definition at line 370 of file abstract_jb.c.
References ast_test_flag, ast_channel::jb, JB_CREATED, jb_get_and_deliver(), and JB_USE.
00371 { 00372 struct ast_jb *jb0 = &c0->jb; 00373 struct ast_jb *jb1 = &c1->jb; 00374 int c0_use_jb = ast_test_flag(jb0, JB_USE); 00375 int c0_jb_is_created = ast_test_flag(jb0, JB_CREATED); 00376 int c1_use_jb = ast_test_flag(jb1, JB_USE); 00377 int c1_jb_is_created = ast_test_flag(jb1, JB_CREATED); 00378 00379 if (c0_use_jb && c0_jb_is_created) 00380 jb_get_and_deliver(c0); 00381 00382 if (c1_use_jb && c1_jb_is_created) 00383 jb_get_and_deliver(c1); 00384 }
void ast_jb_get_config | ( | const struct ast_channel * | chan, | |
struct ast_jb_conf * | conf | |||
) |
Copies a channel's jitterbuffer configuration.
chan | channel. | |
conf | destination. |
Definition at line 608 of file abstract_jb.c.
References ast_jb::conf, and ast_channel::jb.
int ast_jb_get_when_to_wakeup | ( | struct ast_channel * | c0, | |
struct ast_channel * | c1, | |||
int | time_left | |||
) |
Calculates the time, left to the closest delivery moment in a bridge.
c0 | first bridged channel. | |
c1 | second bridged channel. | |
time_left | bridge time limit, or -1 if not set. |
Definition at line 265 of file abstract_jb.c.
References ast_test_flag, get_now(), ast_channel::jb, JB_CREATED, JB_USE, and ast_jb::next.
00266 { 00267 struct ast_jb *jb0 = &c0->jb; 00268 struct ast_jb *jb1 = &c1->jb; 00269 int c0_use_jb = ast_test_flag(jb0, JB_USE); 00270 int c0_jb_is_created = ast_test_flag(jb0, JB_CREATED); 00271 int c1_use_jb = ast_test_flag(jb1, JB_USE); 00272 int c1_jb_is_created = ast_test_flag(jb1, JB_CREATED); 00273 int wait, wait0, wait1; 00274 struct timeval tv_now; 00275 00276 if (time_left == 0) { 00277 /* No time left - the bridge will be retried */ 00278 /* TODO: Test disable this */ 00279 /*return 0;*/ 00280 } 00281 00282 if (time_left < 0) { 00283 time_left = INT_MAX; 00284 } 00285 00286 gettimeofday(&tv_now, NULL); 00287 00288 wait0 = (c0_use_jb && c0_jb_is_created) ? jb0->next - get_now(jb0, &tv_now) : time_left; 00289 wait1 = (c1_use_jb && c1_jb_is_created) ? jb1->next - get_now(jb1, &tv_now) : time_left; 00290 00291 wait = wait0 < wait1 ? wait0 : wait1; 00292 wait = wait < time_left ? wait : time_left; 00293 00294 if (wait == INT_MAX) { 00295 wait = -1; 00296 } else if (wait < 1) { 00297 /* don't let wait=0, because this can cause the pbx thread to loop without any sleeping at all */ 00298 wait = 1; 00299 } 00300 00301 return wait; 00302 }
int ast_jb_put | ( | struct ast_channel * | chan, | |
struct ast_frame * | f | |||
) |
Puts a frame into a channel jitterbuffer.
chan | channel. | |
f | frame. |
Definition at line 305 of file abstract_jb.c.
References ast_clear_flag, AST_FRAME_DTMF, AST_FRAME_VOICE, ast_frdup(), AST_FRFLAG_HAS_TIMING_INFO, ast_frfree, ast_log(), ast_set_flag, ast_test_flag, create_jb(), f, ast_jb_impl::force_resync, get_now(), ast_jb::impl, ast_channel::jb, JB_CREATED, jb_framelog, JB_IMPL_OK, JB_USE, ast_jb::jbobj, ast_frame::len, LOG_ERROR, LOG_WARNING, ast_channel::name, ast_jb::next, ast_jb_impl::next, ast_jb_impl::put, and ast_frame::ts.
00306 { 00307 struct ast_jb *jb = &chan->jb; 00308 struct ast_jb_impl *jbimpl = jb->impl; 00309 void *jbobj = jb->jbobj; 00310 struct ast_frame *frr; 00311 long now = 0; 00312 00313 if (!ast_test_flag(jb, JB_USE)) 00314 return -1; 00315 00316 if (f->frametype != AST_FRAME_VOICE) { 00317 if (f->frametype == AST_FRAME_DTMF && ast_test_flag(jb, JB_CREATED)) { 00318 jb_framelog("JB_PUT {now=%ld}: Received DTMF frame. Force resynching jb...\n", now); 00319 jbimpl->force_resync(jbobj); 00320 } 00321 00322 return -1; 00323 } 00324 00325 /* We consider an enabled jitterbuffer should receive frames with valid timing info. */ 00326 if (!ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO) || f->len < 2 || f->ts < 0) { 00327 ast_log(LOG_WARNING, "%s received frame with invalid timing info: " 00328 "has_timing_info=%d, len=%ld, ts=%ld, src=%s\n", 00329 chan->name, ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO), f->len, f->ts, f->src); 00330 return -1; 00331 } 00332 00333 frr = ast_frdup(f); 00334 00335 if (!frr) { 00336 ast_log(LOG_ERROR, "Failed to isolate frame for the jitterbuffer on channel '%s'\n", chan->name); 00337 return -1; 00338 } 00339 00340 if (!ast_test_flag(jb, JB_CREATED)) { 00341 if (create_jb(chan, frr)) { 00342 ast_frfree(frr); 00343 /* Disable the jitterbuffer */ 00344 ast_clear_flag(jb, JB_USE); 00345 return -1; 00346 } 00347 00348 ast_set_flag(jb, JB_CREATED); 00349 return 0; 00350 } else { 00351 now = get_now(jb, NULL); 00352 if (jbimpl->put(jbobj, frr, now) != JB_IMPL_OK) { 00353 jb_framelog("JB_PUT {now=%ld}: Dropped frame with ts=%ld and len=%ld\n", now, frr->ts, frr->len); 00354 ast_frfree(frr); 00355 /*return -1;*/ 00356 /* TODO: Check this fix - should return 0 here, because the dropped frame shouldn't 00357 be delivered at all */ 00358 return 0; 00359 } 00360 00361 jb->next = jbimpl->next(jbobj); 00362 00363 jb_framelog("JB_PUT {now=%ld}: Queued frame with ts=%ld and len=%ld\n", now, frr->ts, frr->len); 00364 00365 return 0; 00366 } 00367 }
int ast_jb_read_conf | ( | struct ast_jb_conf * | conf, | |
char * | varname, | |||
char * | value | |||
) |
Sets jitterbuffer configuration property.
conf | configuration to store the property in. | |
varname | property name. | |
value | property value. |
Definition at line 568 of file abstract_jb.c.
References AST_JB_CONF_ENABLE, AST_JB_CONF_FORCE, AST_JB_CONF_IMPL, AST_JB_CONF_LOG, AST_JB_CONF_MAX_SIZE, AST_JB_CONF_PREFIX, AST_JB_CONF_RESYNCH_THRESHOLD, AST_JB_ENABLED, AST_JB_FORCED, AST_JB_LOG, ast_set2_flag, ast_strlen_zero(), ast_true(), ast_jb_conf::impl, ast_jb_conf::max_size, name, and ast_jb_conf::resync_threshold.
Referenced by _build_general_config(), gtalk_load_config(), load_module(), process_dahdi(), reload_config(), and store_config().
00569 { 00570 int prefixlen = sizeof(AST_JB_CONF_PREFIX) - 1; 00571 char *name; 00572 int tmp; 00573 00574 if (strncasecmp(AST_JB_CONF_PREFIX, varname, prefixlen)) 00575 return -1; 00576 00577 name = varname + prefixlen; 00578 00579 if (!strcasecmp(name, AST_JB_CONF_ENABLE)) { 00580 ast_set2_flag(conf, ast_true(value), AST_JB_ENABLED); 00581 } else if (!strcasecmp(name, AST_JB_CONF_FORCE)) { 00582 ast_set2_flag(conf, ast_true(value), AST_JB_FORCED); 00583 } else if (!strcasecmp(name, AST_JB_CONF_MAX_SIZE)) { 00584 if ((tmp = atoi(value)) > 0) 00585 conf->max_size = tmp; 00586 } else if (!strcasecmp(name, AST_JB_CONF_RESYNCH_THRESHOLD)) { 00587 if ((tmp = atoi(value)) > 0) 00588 conf->resync_threshold = tmp; 00589 } else if (!strcasecmp(name, AST_JB_CONF_IMPL)) { 00590 if (!ast_strlen_zero(value)) 00591 snprintf(conf->impl, sizeof(conf->impl), "%s", value); 00592 } else if (!strcasecmp(name, AST_JB_CONF_LOG)) { 00593 ast_set2_flag(conf, ast_true(value), AST_JB_LOG); 00594 } else { 00595 return -1; 00596 } 00597 00598 return 0; 00599 }
static int create_jb | ( | struct ast_channel * | chan, | |
struct ast_frame * | first_frame | |||
) | [static] |
Definition at line 447 of file abstract_jb.c.
References ast_assert, ast_bridged_channel(), AST_CHANNEL_NAME, ast_frfree, AST_JB_IMPL_NAME_SIZE, AST_JB_LOG, ast_log(), ast_test_flag, ast_verbose(), ast_jb::conf, ast_jb_impl::create, get_now(), ast_jb::impl, ast_channel::jb, jb_framelog, JB_IMPL_OK, ast_jb::jbobj, ast_jb::last_format, ast_frame::len, LOG_WARNING, ast_jb::logfile, ast_jb_impl::name, ast_channel::name, ast_jb_impl::next, ast_jb::next, option_verbose, ast_jb_impl::put_first, ast_jb_conf::resync_threshold, ast_frame::subclass, ast_frame::ts, and VERBOSE_PREFIX_3.
Referenced by ast_jb_put().
00448 { 00449 struct ast_jb *jb = &chan->jb; 00450 struct ast_jb_conf *jbconf = &jb->conf; 00451 struct ast_jb_impl *jbimpl = jb->impl; 00452 void *jbobj; 00453 struct ast_channel *bridged; 00454 long now; 00455 char logfile_pathname[20 + AST_JB_IMPL_NAME_SIZE + 2*AST_CHANNEL_NAME + 1]; 00456 char name1[AST_CHANNEL_NAME], name2[AST_CHANNEL_NAME], *tmp; 00457 int res; 00458 00459 jbobj = jb->jbobj = jbimpl->create(jbconf, jbconf->resync_threshold); 00460 if (!jbobj) { 00461 ast_log(LOG_WARNING, "Failed to create jitterbuffer on channel '%s'\n", chan->name); 00462 return -1; 00463 } 00464 00465 now = get_now(jb, NULL); 00466 res = jbimpl->put_first(jbobj, frr, now); 00467 00468 /* The result of putting the first frame should not differ from OK. However, its possible 00469 some implementations (i.e. adaptive's when resynch_threshold is specified) to drop it. */ 00470 if (res != JB_IMPL_OK) { 00471 ast_log(LOG_WARNING, "Failed to put first frame in the jitterbuffer on channel '%s'\n", chan->name); 00472 /* 00473 jbimpl->destroy(jbobj); 00474 return -1; 00475 */ 00476 } 00477 00478 /* Init next */ 00479 jb->next = jbimpl->next(jbobj); 00480 00481 /* Init last format for a first time. */ 00482 jb->last_format = frr->subclass; 00483 00484 /* Create a frame log file */ 00485 if (ast_test_flag(jbconf, AST_JB_LOG)) { 00486 snprintf(name2, sizeof(name2), "%s", chan->name); 00487 tmp = strchr(name2, '/'); 00488 if (tmp) 00489 *tmp = '#'; 00490 00491 bridged = ast_bridged_channel(chan); 00492 /* We should always have bridged chan if a jitterbuffer is in use */ 00493 ast_assert(bridged != NULL); 00494 00495 snprintf(name1, sizeof(name1), "%s", bridged->name); 00496 tmp = strchr(name1, '/'); 00497 if (tmp) 00498 *tmp = '#'; 00499 00500 snprintf(logfile_pathname, sizeof(logfile_pathname), 00501 "/tmp/ast_%s_jb_%s--%s.log", jbimpl->name, name1, name2); 00502 jb->logfile = fopen(logfile_pathname, "w+b"); 00503 00504 if (!jb->logfile) 00505 ast_log(LOG_WARNING, "Failed to create frame log file with pathname '%s'\n", logfile_pathname); 00506 00507 if (res == JB_IMPL_OK) 00508 jb_framelog("JB_PUT_FIRST {now=%ld}: Queued frame with ts=%ld and len=%ld\n", 00509 now, frr->ts, frr->len); 00510 else 00511 jb_framelog("JB_PUT_FIRST {now=%ld}: Dropped frame with ts=%ld and len=%ld\n", 00512 now, frr->ts, frr->len); 00513 } 00514 00515 if (option_verbose > 2) 00516 ast_verbose(VERBOSE_PREFIX_3 "%s jitterbuffer created on channel %s\n", jbimpl->name, chan->name); 00517 00518 /* Free the frame if it has not been queued in the jb */ 00519 if (res != JB_IMPL_OK) 00520 ast_frfree(frr); 00521 00522 return 0; 00523 }
static long get_now | ( | struct ast_jb * | jb, | |
struct timeval * | tv | |||
) | [static] |
Definition at line 555 of file abstract_jb.c.
References ast_tvdiff_ms(), and ast_jb::timebase.
Referenced by ast_jb_get_when_to_wakeup(), ast_jb_put(), create_jb(), and jb_get_and_deliver().
00556 { 00557 struct timeval now; 00558 00559 if (!tv) { 00560 tv = &now; 00561 gettimeofday(tv, NULL); 00562 } 00563 00564 return ast_tvdiff_ms(*tv, jb->timebase); 00565 }
static void jb_choose_impl | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 183 of file abstract_jb.c.
References ast_strlen_zero(), avail_impl, ast_jb::conf, ast_jb_conf::impl, ast_jb::impl, ast_channel::jb, and ast_jb_impl::name.
Referenced by ast_jb_do_usecheck().
00184 { 00185 struct ast_jb *jb = &chan->jb; 00186 struct ast_jb_conf *jbconf = &jb->conf; 00187 struct ast_jb_impl *test_impl; 00188 int i, avail_impl_count = sizeof(avail_impl) / sizeof(avail_impl[0]); 00189 00190 jb->impl = &avail_impl[default_impl]; 00191 00192 if (ast_strlen_zero(jbconf->impl)) 00193 return; 00194 00195 for (i = 0; i < avail_impl_count; i++) { 00196 test_impl = &avail_impl[i]; 00197 if (!strcasecmp(jbconf->impl, test_impl->name)) { 00198 jb->impl = test_impl; 00199 return; 00200 } 00201 } 00202 }
static void * jb_create_adaptive | ( | struct ast_jb_conf * | general_config, | |
long | resynch_threshold | |||
) | [static] |
Definition at line 728 of file abstract_jb.c.
References jb_new(), jb_setconf(), jb_conf::max_contig_interp, jb_conf::max_jitterbuf, ast_jb_conf::max_size, ast_jb_conf::resync_threshold, and jb_conf::resync_threshold.
00729 { 00730 jb_conf jbconf; 00731 jitterbuf *adaptivejb; 00732 00733 adaptivejb = jb_new(); 00734 if (adaptivejb) { 00735 jbconf.max_jitterbuf = general_config->max_size; 00736 jbconf.resync_threshold = general_config->resync_threshold; 00737 jbconf.max_contig_interp = 10; 00738 jb_setconf(adaptivejb, &jbconf); 00739 } 00740 00741 return adaptivejb; 00742 }
static void * jb_create_fixed | ( | struct ast_jb_conf * | general_config, | |
long | resynch_threshold | |||
) | [static] |
Definition at line 634 of file abstract_jb.c.
References fixed_jb_new(), fixed_jb_conf::jbsize, ast_jb_conf::max_size, and fixed_jb_conf::resync_threshold.
00635 { 00636 struct fixed_jb_conf conf; 00637 00638 conf.jbsize = general_config->max_size; 00639 conf.resync_threshold = resynch_threshold; 00640 00641 return fixed_jb_new(&conf); 00642 }
static void jb_destroy_adaptive | ( | void * | jb | ) | [static] |
Definition at line 745 of file abstract_jb.c.
References jb_destroy().
00746 { 00747 jitterbuf *adaptivejb = (jitterbuf *) jb; 00748 00749 jb_destroy(adaptivejb); 00750 }
static void jb_destroy_fixed | ( | void * | jb | ) | [static] |
Definition at line 644 of file abstract_jb.c.
References fixed_jb_destroy().
00645 { 00646 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00647 00648 /* destroy the jb */ 00649 fixed_jb_destroy(fixedjb); 00650 }
static void jb_empty_and_reset_adaptive | ( | void * | jb | ) | [static] |
Definition at line 813 of file abstract_jb.c.
References ast_frfree, f, jb_getall(), JB_OK, and jb_reset().
00814 { 00815 jitterbuf *adaptivejb = jb; 00816 jb_frame f; 00817 00818 while (jb_getall(adaptivejb, &f) == JB_OK) { 00819 ast_frfree(f.data); 00820 } 00821 00822 jb_reset(adaptivejb); 00823 }
static void jb_empty_and_reset_fixed | ( | void * | jb | ) | [static] |
Definition at line 716 of file abstract_jb.c.
References ast_frfree, f, FIXED_JB_OK, and fixed_jb_remove().
00717 { 00718 struct fixed_jb *fixedjb = jb; 00719 struct fixed_jb_frame f; 00720 00721 while (fixed_jb_remove(fixedjb, &f) == FIXED_JB_OK) { 00722 ast_frfree(f.data); 00723 } 00724 }
static void jb_force_resynch_adaptive | ( | void * | jb | ) | [static] |
static void jb_force_resynch_fixed | ( | void * | jb | ) | [static] |
Definition at line 709 of file abstract_jb.c.
References fixed_jb_set_force_resynch().
00710 { 00711 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00712 00713 fixed_jb_set_force_resynch(fixedjb); 00714 }
static int jb_get_adaptive | ( | void * | jb, | |
struct ast_frame ** | fout, | |||
long | now, | |||
long | interpl | |||
) | [static] |
Definition at line 775 of file abstract_jb.c.
References adaptive_to_abstract_code, jb_frame::data, and jb_get().
00776 { 00777 jitterbuf *adaptivejb = (jitterbuf *) jb; 00778 jb_frame frame; 00779 int res; 00780 00781 res = jb_get(adaptivejb, &frame, now, interpl); 00782 *fout = frame.data; 00783 00784 return adaptive_to_abstract_code[res]; 00785 }
static void jb_get_and_deliver | ( | struct ast_channel * | chan | ) | [static] |
Definition at line 387 of file abstract_jb.c.
References ast_assert, ast_codec_interp_len(), AST_FRAME_VOICE, ast_frfree, AST_FRIENDLY_OFFSET, ast_log(), ast_samp2tv(), ast_tvadd(), ast_write(), f, ast_jb_impl::get, get_now(), ast_jb::impl, ast_channel::jb, jb_framelog, jb_get_actions, JB_IMPL_DROP, JB_IMPL_INTERP, JB_IMPL_NOFRAME, JB_IMPL_OK, ast_jb::jbobj, ast_jb::last_format, LOG_ERROR, LOG_WARNING, ast_jb_impl::name, ast_frame::next, ast_jb_impl::next, ast_jb::next, and ast_jb::timebase.
Referenced by ast_jb_get_and_deliver().
00388 { 00389 struct ast_jb *jb = &chan->jb; 00390 struct ast_jb_impl *jbimpl = jb->impl; 00391 void *jbobj = jb->jbobj; 00392 struct ast_frame *f, finterp = { .frametype = AST_FRAME_VOICE, }; 00393 long now; 00394 int interpolation_len, res; 00395 00396 now = get_now(jb, NULL); 00397 jb->next = jbimpl->next(jbobj); 00398 if (now < jb->next) { 00399 jb_framelog("\tJB_GET {now=%ld}: now < next=%ld\n", now, jb->next); 00400 return; 00401 } 00402 00403 while (now >= jb->next) { 00404 interpolation_len = ast_codec_interp_len(jb->last_format); 00405 00406 res = jbimpl->get(jbobj, &f, now, interpolation_len); 00407 00408 switch(res) { 00409 case JB_IMPL_OK: 00410 /* deliver the frame */ 00411 ast_write(chan, f); 00412 case JB_IMPL_DROP: 00413 jb_framelog("\tJB_GET {now=%ld}: %s frame with ts=%ld and len=%ld\n", 00414 now, jb_get_actions[res], f->ts, f->len); 00415 jb->last_format = f->subclass; 00416 ast_frfree(f); 00417 break; 00418 case JB_IMPL_INTERP: 00419 /* interpolate a frame */ 00420 f = &finterp; 00421 f->subclass = jb->last_format; 00422 f->samples = interpolation_len * 8; 00423 f->src = "JB interpolation"; 00424 f->delivery = ast_tvadd(jb->timebase, ast_samp2tv(jb->next, 1000)); 00425 f->offset = AST_FRIENDLY_OFFSET; 00426 /* deliver the interpolated frame */ 00427 ast_write(chan, f); 00428 jb_framelog("\tJB_GET {now=%ld}: Interpolated frame with len=%d\n", now, interpolation_len); 00429 break; 00430 case JB_IMPL_NOFRAME: 00431 ast_log(LOG_WARNING, 00432 "JB_IMPL_NOFRAME is retuned from the %s jb when now=%ld >= next=%ld, jbnext=%ld!\n", 00433 jbimpl->name, now, jb->next, jbimpl->next(jbobj)); 00434 jb_framelog("\tJB_GET {now=%ld}: No frame for now!?\n", now); 00435 return; 00436 default: 00437 ast_log(LOG_ERROR, "This should never happen!\n"); 00438 ast_assert("JB type unknown" == NULL); 00439 break; 00440 } 00441 00442 jb->next = jbimpl->next(jbobj); 00443 } 00444 }
static int jb_get_fixed | ( | void * | jb, | |
struct ast_frame ** | fout, | |||
long | now, | |||
long | interpl | |||
) | [static] |
Definition at line 675 of file abstract_jb.c.
References fixed_jb_frame::data, fixed_jb_get(), and fixed_to_abstract_code.
00676 { 00677 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00678 struct fixed_jb_frame frame; 00679 int res; 00680 00681 res = fixed_jb_get(fixedjb, &frame, now, interpl); 00682 *fout = frame.data; 00683 00684 return fixed_to_abstract_code[res]; 00685 }
static long jb_next_adaptive | ( | void * | jb | ) | [static] |
static long jb_next_fixed | ( | void * | jb | ) | [static] |
Definition at line 688 of file abstract_jb.c.
References fixed_jb_next().
00689 { 00690 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00691 00692 return fixed_jb_next(fixedjb); 00693 }
static int jb_put_adaptive | ( | void * | jb, | |
struct ast_frame * | fin, | |||
long | now | |||
) | [static] |
Definition at line 764 of file abstract_jb.c.
References adaptive_to_abstract_code, jb_put(), JB_TYPE_VOICE, ast_frame::len, and ast_frame::ts.
Referenced by jb_put_first_adaptive().
00765 { 00766 jitterbuf *adaptivejb = (jitterbuf *) jb; 00767 int res; 00768 00769 res = jb_put(adaptivejb, fin, JB_TYPE_VOICE, fin->len, fin->ts, now); 00770 00771 return adaptive_to_abstract_code[res]; 00772 }
static int jb_put_first_adaptive | ( | void * | jb, | |
struct ast_frame * | fin, | |||
long | now | |||
) | [static] |
Definition at line 753 of file abstract_jb.c.
References jitterbuf::info, jb_put_adaptive(), jb_info::resync_offset, and ast_frame::ts.
00754 { 00755 jitterbuf *adaptivejb = (jitterbuf *) jb; 00756 00757 /* Initialize the offset to that of the first frame's timestamp */ 00758 adaptivejb->info.resync_offset = fin->ts; 00759 00760 return jb_put_adaptive(jb, fin, now); 00761 }
static int jb_put_first_fixed | ( | void * | jb, | |
struct ast_frame * | fin, | |||
long | now | |||
) | [static] |
Definition at line 653 of file abstract_jb.c.
References fixed_jb_put_first(), fixed_to_abstract_code, ast_frame::len, and ast_frame::ts.
00654 { 00655 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00656 int res; 00657 00658 res = fixed_jb_put_first(fixedjb, fin, fin->len, fin->ts, now); 00659 00660 return fixed_to_abstract_code[res]; 00661 }
static int jb_put_fixed | ( | void * | jb, | |
struct ast_frame * | fin, | |||
long | now | |||
) | [static] |
Definition at line 664 of file abstract_jb.c.
References fixed_jb_put(), fixed_to_abstract_code, ast_frame::len, and ast_frame::ts.
00665 { 00666 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00667 int res; 00668 00669 res = fixed_jb_put(fixedjb, fin, fin->len, fin->ts, now); 00670 00671 return fixed_to_abstract_code[res]; 00672 }
static int jb_remove_adaptive | ( | void * | jb, | |
struct ast_frame ** | fout | |||
) | [static] |
Definition at line 796 of file abstract_jb.c.
References adaptive_to_abstract_code, jb_frame::data, and jb_getall().
00797 { 00798 jitterbuf *adaptivejb = (jitterbuf *) jb; 00799 jb_frame frame; 00800 int res; 00801 00802 res = jb_getall(adaptivejb, &frame); 00803 *fout = frame.data; 00804 00805 return adaptive_to_abstract_code[res]; 00806 }
static int jb_remove_fixed | ( | void * | jb, | |
struct ast_frame ** | fout | |||
) | [static] |
Definition at line 696 of file abstract_jb.c.
References fixed_jb_frame::data, fixed_jb_remove(), and fixed_to_abstract_code.
00697 { 00698 struct fixed_jb *fixedjb = (struct fixed_jb *) jb; 00699 struct fixed_jb_frame frame; 00700 int res; 00701 00702 res = fixed_jb_remove(fixedjb, &frame); 00703 *fout = frame.data; 00704 00705 return fixed_to_abstract_code[res]; 00706 }
int adaptive_to_abstract_code[] [static] |
Initial value:
{JB_IMPL_OK, JB_IMPL_NOFRAME, JB_IMPL_NOFRAME, JB_IMPL_INTERP, JB_IMPL_DROP, JB_IMPL_OK}
Definition at line 158 of file abstract_jb.c.
Referenced by jb_get_adaptive(), jb_put_adaptive(), and jb_remove_adaptive().
struct ast_jb_impl avail_impl[] [static] |
int default_impl = 0 [static] |
Definition at line 144 of file abstract_jb.c.
int fixed_to_abstract_code[] [static] |
Initial value:
Definition at line 156 of file abstract_jb.c.
Referenced by jb_get_fixed(), jb_put_first_fixed(), jb_put_fixed(), and jb_remove_fixed().
char* jb_get_actions[] = {"Delivered", "Dropped", "Interpolated", "No"} [static] |