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freeswitch/src/mod/endpoints/mod_sofia/rtp.c

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add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2011, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Mathieu Rene <mrene@avgs.ca>
*
* rtp.c -- RTP Controllable Channel Module
*
*/
#include <switch.h>
#include "mod_sofia.h"
#define kLOCALADDR "local_addr"
#define kLOCALPORT "local_port"
#define kREMOTEADDR "remote_addr"
#define kREMOTEPORT "remote_port"
#define kCODEC "codec"
#define kPTIME "ptime"
#define kPT "pt"
#define kRFC2833PT "rfc2833_pt"
#define kMODE "mode"
#define kRATE "rate"
static struct {
switch_memory_pool_t *pool;
switch_endpoint_interface_t *endpoint_interface;
} crtp;
typedef struct {
switch_core_session_t *session;
switch_channel_t *channel;
switch_codec_t read_codec, write_codec;
switch_frame_t read_frame;
switch_rtp_bug_flag_t rtp_bugs;
switch_rtp_t *rtp_session;
uint32_t timestamp_send;
const char *local_address;
const char *remote_address;
const char *codec;
int ptime;
const switch_codec_implementation_t *negotiated_codecs[SWITCH_MAX_CODECS];
int num_negotiated_codecs;
char *origin;
switch_port_t local_port;
switch_port_t remote_port;
switch_payload_t agreed_pt; /*XXX*/
omfg
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switch_core_media_dtmf_t dtmf_type;
add rtp endpoint contributed by sangoma
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enum {
RTP_SENDONLY,
RTP_RECVONLY,
RTP_SENDRECV
} mode;
} crtp_private_t;
static switch_status_t channel_on_init(switch_core_session_t *session);
static switch_status_t channel_on_destroy(switch_core_session_t *session);
static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *session, switch_event_t *var_event,
switch_caller_profile_t *outbound_profile,
switch_core_session_t **new_session,
switch_memory_pool_t **pool,
switch_originate_flag_t flags, switch_call_cause_t *cancel_cause);
static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id);
static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id);
static switch_status_t channel_receive_message(switch_core_session_t *session, switch_core_session_message_t *msg);
static switch_status_t channel_send_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf);
static switch_status_t channel_receive_event(switch_core_session_t *session, switch_event_t *event);
switch_state_handler_table_t crtp_state_handlers = {
FS-4504 vs2010 only - plus mod_sofia fix - anybody want to help with 2008
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/*on_init */channel_on_init,
/*on_routing */ NULL,
/*on_execute */ NULL,
/*on_hangup*/ NULL,
/*on_exchange_media*/ NULL,
/*on_soft_execute*/ NULL,
/*on_consume_media*/ NULL,
/*on_hibernate*/ NULL,
/*on_reset*/ NULL,
/*on_park*/ NULL,
/*on_reporting*/ NULL,
/*on_destroy*/ channel_on_destroy
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
};
switch_io_routines_t crtp_io_routines = {
FS-4504 vs2010 only - plus mod_sofia fix - anybody want to help with 2008
2012-08-08 21:18:06 -05:00
/*outgoing_channel*/ channel_outgoing_channel,
/*read_frame*/ channel_read_frame,
/*write_frame*/ channel_write_frame,
/*kill_channel*/ NULL,
/*send_dtmf*/ channel_send_dtmf,
/*receive_message*/ channel_receive_message,
/*receive_event*/ channel_receive_event,
/*state_change*/ NULL,
/*read_video_frame*/ NULL,
/*write_video_frame*/ NULL,
remove unused resurrect code
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/*state_run*/ NULL
FS-4504 vs2010 only - plus mod_sofia fix - anybody want to help with 2008
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add rtp endpoint contributed by sangoma
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};
void crtp_init(switch_loadable_module_interface_t *module_interface)
{
switch_endpoint_interface_t *endpoint_interface;
//switch_api_interface_t *api_interface;
crtp.pool = module_interface->pool;
endpoint_interface = switch_loadable_module_create_interface(module_interface, SWITCH_ENDPOINT_INTERFACE);
endpoint_interface->interface_name = "rtp";
endpoint_interface->io_routines = &crtp_io_routines;
endpoint_interface->state_handler = &crtp_state_handlers;
crtp.endpoint_interface = endpoint_interface;
//SWITCH_ADD_API(api_interface, "rtp_test", "test", test_function, "");
}
static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *session, switch_event_t *var_event,
switch_caller_profile_t *outbound_profile,
switch_core_session_t **new_session,
switch_memory_pool_t **pool,
switch_originate_flag_t flags, switch_call_cause_t *cancel_cause)
{
switch_channel_t *channel;
char name[128];
crtp_private_t *tech_pvt = NULL;
switch_caller_profile_t *caller_profile;
const char *err;
const char *local_addr = switch_event_get_header_nil(var_event, kLOCALADDR),
*szlocal_port = switch_event_get_header_nil(var_event, kLOCALPORT),
*remote_addr = switch_event_get_header_nil(var_event, kREMOTEADDR),
*szremote_port = switch_event_get_header_nil(var_event, kREMOTEPORT),
*codec = switch_event_get_header_nil(var_event, kCODEC),
*szptime = switch_event_get_header_nil(var_event, kPTIME),
//*mode = switch_event_get_header_nil(var_event, kMODE),
//*szrfc2833_pt = switch_event_get_header_nil(var_event, kRFC2833PT),
*szrate = switch_event_get_header_nil(var_event, kRATE),
*szpt = switch_event_get_header_nil(var_event, kPT);
switch_port_t local_port = !zstr(szlocal_port) ? atoi(szlocal_port) : 0,
remote_port = !zstr(szremote_port) ? atoi(szremote_port) : 0;
int ptime = !zstr(szptime) ? atoi(szptime) : 0,
//rfc2833_pt = !zstr(szrfc2833_pt) ? atoi(szrfc2833_pt) : 0,
rate = !zstr(szrate) ? atoi(szrate) : 8000,
pt = !zstr(szpt) ? atoi(szpt) : 0;
if (
((zstr(remote_addr) || remote_port == 0) && (zstr(local_addr) || local_port == 0)) ||
zstr(codec) ||
zstr(szpt)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Missing required arguments\n");
goto fail;
}
if (!(*new_session = switch_core_session_request(crtp.endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, 0, pool))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't request session.\n");
goto fail;
}
channel = switch_core_session_get_channel(*new_session);
tech_pvt = switch_core_session_alloc(*new_session, sizeof *tech_pvt);
tech_pvt->session = *new_session;
tech_pvt->channel = channel;
tech_pvt->local_address = switch_core_session_strdup(*new_session, local_addr);
tech_pvt->local_port = local_port;
tech_pvt->remote_address = switch_core_session_strdup(*new_session, remote_addr);
tech_pvt->remote_port = remote_port;
tech_pvt->ptime = ptime;
tech_pvt->agreed_pt = pt;
tech_pvt->dtmf_type = DTMF_2833; /* XXX */
if (zstr(local_addr) || local_port == 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "The local address and port must be set\n");
goto fail;
} else if (zstr(remote_addr) || remote_port == 0) {
tech_pvt->mode = RTP_RECVONLY;
} else {
tech_pvt->mode = RTP_SENDRECV;
}
switch_core_session_set_private(*new_session, tech_pvt);
caller_profile = switch_caller_profile_clone(*new_session, outbound_profile);
switch_channel_set_caller_profile(channel, caller_profile);
snprintf(name, sizeof(name), "rtp/%s", outbound_profile->destination_number);
switch_channel_set_name(channel, name);
switch_channel_set_state(channel, CS_INIT);
if (switch_core_codec_init(&tech_pvt->read_codec,
codec,
NULL,
rate,
ptime,
1,
/*SWITCH_CODEC_FLAG_ENCODE |*/ SWITCH_CODEC_FLAG_DECODE,
NULL, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
goto fail;
} else {
if (switch_core_codec_init(&tech_pvt->write_codec,
codec,
NULL,
rate,
ptime,
1,
SWITCH_CODEC_FLAG_ENCODE /*| SWITCH_CODEC_FLAG_DECODE*/,
NULL, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
goto fail;
}
}
if (switch_core_session_set_read_codec(*new_session, &tech_pvt->read_codec) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't set read codec?\n");
goto fail;
}
if (switch_core_session_set_write_codec(*new_session, &tech_pvt->write_codec) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't set write codec?\n");
goto fail;
}
if (!(tech_pvt->rtp_session = switch_rtp_new(local_addr, local_port, remote_addr, remote_port, tech_pvt->agreed_pt,
convert rtp flags to arrays
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tech_pvt->read_codec.implementation->samples_per_packet, ptime * 1000,
0, "soft", &err, switch_core_session_get_pool(*new_session)))) {
add rtp endpoint contributed by sangoma
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't setup RTP session: [%s]\n", err);
goto fail;
}
if (switch_core_session_thread_launch(*new_session) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't start session thread.\n");
goto fail;
}
switch_channel_mark_answered(channel);
return SWITCH_CAUSE_SUCCESS;
fail:
if (tech_pvt) {
if (tech_pvt->read_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->read_codec);
}
if (tech_pvt->write_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->write_codec);
}
}
if (*new_session) {
switch_core_session_destroy(new_session);
}
return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
}
static switch_status_t channel_on_init(switch_core_session_t *session)
{
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_channel_set_state(channel, CS_CONSUME_MEDIA);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_on_destroy(switch_core_session_t *session)
{
crtp_private_t *tech_pvt = switch_core_session_get_private(session);
if ((tech_pvt = switch_core_session_get_private(session))) {
if (tech_pvt->read_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->read_codec);
}
if (tech_pvt->write_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->write_codec);
}
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id)
{
crtp_private_t *tech_pvt;
switch_channel_t *channel;
switch_status_t status;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
if (!tech_pvt->rtp_session || tech_pvt->mode == RTP_SENDONLY) {
switch_yield(20000); /* replace by local timer XXX */
goto cng;
}
if (switch_rtp_has_dtmf(tech_pvt->rtp_session)) {
switch_dtmf_t dtmf = { 0 };
switch_rtp_dequeue_dtmf(tech_pvt->rtp_session, &dtmf);
switch_channel_queue_dtmf(channel, &dtmf);
}
tech_pvt->read_frame.flags = SFF_NONE;
tech_pvt->read_frame.codec = &tech_pvt->read_codec;
status = switch_rtp_zerocopy_read_frame(tech_pvt->rtp_session, &tech_pvt->read_frame, flags);
if (status != SWITCH_STATUS_SUCCESS && status != SWITCH_STATUS_BREAK) {
goto cng;
}
*frame = &tech_pvt->read_frame;
return SWITCH_STATUS_SUCCESS;
cng:
*frame = &tech_pvt->read_frame;
tech_pvt->read_frame.codec = &tech_pvt->read_codec;
tech_pvt->read_frame.flags |= SFF_CNG;
tech_pvt->read_frame.datalen = 0;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id)
{
crtp_private_t *tech_pvt;
switch_channel_t *channel;
//int frames = 0, bytes = 0, samples = 0;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
#if 0
if (!switch_test_flag(frame, SFF_CNG) && !switch_test_flag(frame, SFF_PROXY_PACKET)) {
if (tech_pvt->read_codec.implementation->encoded_bytes_per_packet) {
bytes = tech_pvt->read_codec.implementation->encoded_bytes_per_packet;
frames = ((int) frame->datalen / bytes);
} else
frames = 1;
samples = frames * tech_pvt->read_codec.implementation->samples_per_packet;
}
tech_pvt->timestamp_send += samples;
#endif
if (tech_pvt->mode == RTP_RECVONLY) {
return SWITCH_STATUS_SUCCESS;
}
switch_rtp_write_frame(tech_pvt->rtp_session, frame);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_send_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf)
{
crtp_private_t *tech_pvt = NULL;
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch(tech_pvt->dtmf_type) {
case DTMF_2833:
{
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Enqueuing RFC2833 DTMF %c of length %d\n", dtmf->digit, dtmf->duration);
return switch_rtp_queue_rfc2833(tech_pvt->rtp_session, dtmf);
}
case DTMF_NONE:
default:
{
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Discarding DTMF %c of length %d, DTMF type is NONE\n", dtmf->digit, dtmf->duration);
}
}
return SWITCH_STATUS_SUCCESS;
}
static switch_bool_t compare_var(switch_event_t *event, switch_channel_t *channel, const char *varname)
{
const char *chan_val = switch_channel_get_variable_dup(channel, varname, SWITCH_FALSE, -1);
const char *event_val = switch_event_get_header(event, varname);
if (zstr(chan_val) || zstr(event_val)) {
return 1;
}
return strcasecmp(chan_val, event_val);
}
static switch_status_t channel_receive_event(switch_core_session_t *session, switch_event_t *event)
{
const char *command = switch_event_get_header(event, "command");
switch_channel_t *channel = switch_core_session_get_channel(session);
crtp_private_t *tech_pvt = switch_core_session_get_private(session);
char *codec = switch_event_get_header_nil(event, kCODEC);
char *szptime = switch_event_get_header_nil(event, kPTIME);
char *szrate = switch_event_get_header_nil(event, kRATE);
char *szpt = switch_event_get_header_nil(event, kPT);
int ptime = !zstr(szptime) ? atoi(szptime) : 0,
rate = !zstr(szrate) ? atoi(szrate) : 8000,
pt = !zstr(szpt) ? atoi(szpt) : 0;
if (!zstr(command) && !strcasecmp(command, "media_modify")) {
/* Compare parameters */
if (compare_var(event, channel, kREMOTEADDR) ||
compare_var(event, channel, kREMOTEPORT)) {
char *remote_addr = switch_event_get_header(event, kREMOTEADDR);
char *szremote_port = switch_event_get_header(event, kREMOTEPORT);
switch_port_t remote_port = !zstr(szremote_port) ? atoi(szremote_port) : 0;
const char *err;
switch_channel_set_variable(channel, kREMOTEADDR, remote_addr);
switch_channel_set_variable(channel, kREMOTEPORT, szremote_port);
if (switch_rtp_set_remote_address(tech_pvt->rtp_session, remote_addr, remote_port, 0, SWITCH_TRUE, &err) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Error setting RTP remote address: %s\n", err);
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Set RTP remote: %s:%d\n", remote_addr, (int)remote_port);
tech_pvt->mode = RTP_SENDRECV;
}
}
if (compare_var(event, channel, kCODEC) ||
compare_var(event, channel, kPTIME) ||
compare_var(event, channel, kPT) ||
compare_var(event, channel, kRATE)) {
/* Reset codec */
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Switching codec updating \n");
if (switch_core_codec_init(&tech_pvt->read_codec,
codec,
NULL,
rate,
ptime,
1,
/*SWITCH_CODEC_FLAG_ENCODE |*/ SWITCH_CODEC_FLAG_DECODE,
NULL, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
goto fail;
} else {
if (switch_core_codec_init(&tech_pvt->write_codec,
codec,
NULL,
rate,
ptime,
1,
SWITCH_CODEC_FLAG_ENCODE /*| SWITCH_CODEC_FLAG_DECODE*/,
NULL, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
goto fail;
}
}
if (switch_core_session_set_read_codec(session, &tech_pvt->read_codec) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't set read codec?\n");
goto fail;
}
if (switch_core_session_set_write_codec(session, &tech_pvt->write_codec) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't set write codec?\n");
goto fail;
}
switch_rtp_set_default_payload(tech_pvt->rtp_session, pt);
switch_rtp_set_recv_pt(tech_pvt->rtp_session, pt);
}
if (compare_var(event, channel, kRFC2833PT)) {
const char *szpt = switch_channel_get_variable(channel, kRFC2833PT);
int pt = !zstr(szpt) ? atoi(szpt) : 0;
switch_channel_set_variable(channel, kRFC2833PT, szpt);
switch_rtp_set_telephony_event(tech_pvt->rtp_session, pt);
}
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Received unknown command [%s] in event.\n", !command ? "null" : command);
}
return SWITCH_STATUS_SUCCESS;
fail:
if (tech_pvt) {
if (tech_pvt->read_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->read_codec);
}
if (tech_pvt->write_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->write_codec);
}
}
if (session) {
switch_core_session_destroy(&session);
}
Fix typo on rtp.c causing compiler error (FS-4511)
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return SWITCH_STATUS_FALSE;
add rtp endpoint contributed by sangoma
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}
static switch_status_t channel_receive_message(switch_core_session_t *session, switch_core_session_message_t *msg)
{
crtp_private_t *tech_pvt = NULL;
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch (msg->message_id) {
case SWITCH_MESSAGE_INDICATE_DEBUG_AUDIO:
{
if (switch_rtp_ready(tech_pvt->rtp_session) && !zstr(msg->string_array_arg[0]) && !zstr(msg->string_array_arg[1])) {
convert rtp flags to arrays
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switch_rtp_flag_t flags[SWITCH_RTP_FLAG_INVALID] = {0};
int x = 0;
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
if (!strcasecmp(msg->string_array_arg[0], "read")) {
convert rtp flags to arrays
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flags[SWITCH_RTP_FLAG_DEBUG_RTP_READ]++;x++;
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
} else if (!strcasecmp(msg->string_array_arg[0], "write")) {
convert rtp flags to arrays
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flags[SWITCH_RTP_FLAG_DEBUG_RTP_WRITE]++;x++;
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
} else if (!strcasecmp(msg->string_array_arg[0], "both")) {
convert rtp flags to arrays
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flags[SWITCH_RTP_FLAG_DEBUG_RTP_READ]++;x++;
flags[SWITCH_RTP_FLAG_DEBUG_RTP_WRITE]++;
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
}
convert rtp flags to arrays
2012-12-18 16:06:29 -06:00
if (x) {
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
if (switch_true(msg->string_array_arg[1])) {
convert rtp flags to arrays
2012-12-18 16:06:29 -06:00
switch_rtp_set_flags(tech_pvt->rtp_session, flags);
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
} else {
convert rtp flags to arrays
2012-12-18 16:06:29 -06:00
switch_rtp_clear_flags(tech_pvt->rtp_session, flags);
add rtp endpoint contributed by sangoma
2012-08-08 14:46:38 -05:00
}
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Invalid Options\n");
}
}
break;
}
case SWITCH_MESSAGE_INDICATE_AUDIO_SYNC:
if (switch_rtp_ready(tech_pvt->rtp_session)) {
rtp_flush_read_buffer(tech_pvt->rtp_session, SWITCH_RTP_FLUSH_ONCE);
}
break;
case SWITCH_MESSAGE_INDICATE_JITTER_BUFFER:
{
if (switch_rtp_ready(tech_pvt->rtp_session)) {
int len = 0, maxlen = 0, qlen = 0, maxqlen = 50, max_drift = 0;
if (msg->string_arg) {
char *p, *q;
const char *s;
if (!strcasecmp(msg->string_arg, "pause")) {
switch_rtp_pause_jitter_buffer(tech_pvt->rtp_session, SWITCH_TRUE);
goto end;
} else if (!strcasecmp(msg->string_arg, "resume")) {
switch_rtp_pause_jitter_buffer(tech_pvt->rtp_session, SWITCH_FALSE);
goto end;
} else if (!strncasecmp(msg->string_arg, "debug:", 6)) {
s = msg->string_arg + 6;
if (s && !strcmp(s, "off")) {
s = NULL;
}
switch_rtp_debug_jitter_buffer(tech_pvt->rtp_session, s);
goto end;
}
if ((len = atoi(msg->string_arg))) {
qlen = len / (tech_pvt->read_codec.implementation->microseconds_per_packet / 1000);
if (qlen < 1) {
qlen = 3;
}
}
if (qlen) {
if ((p = strchr(msg->string_arg, ':'))) {
p++;
maxlen = atol(p);
if ((q = strchr(p, ':'))) {
q++;
max_drift = abs(atol(q));
}
}
}
if (maxlen) {
maxqlen = maxlen / (tech_pvt->read_codec.implementation->microseconds_per_packet / 1000);
}
}
if (qlen) {
if (maxqlen < qlen) {
maxqlen = qlen * 5;
}
if (switch_rtp_activate_jitter_buffer(tech_pvt->rtp_session, qlen, maxqlen,
tech_pvt->read_codec.implementation->samples_per_packet,
tech_pvt->read_codec.implementation->samples_per_second, max_drift) == SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(tech_pvt->session),
SWITCH_LOG_DEBUG, "Setting Jitterbuffer to %dms (%d frames) (%d max frames) (%d max drift)\n",
len, qlen, maxqlen, max_drift);
switch_channel_set_flag(tech_pvt->channel, CF_JITTERBUFFER);
if (!switch_false(switch_channel_get_variable(tech_pvt->channel, "sip_jitter_buffer_plc"))) {
switch_channel_set_flag(tech_pvt->channel, CF_JITTERBUFFER_PLC);
}
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(tech_pvt->session),
SWITCH_LOG_WARNING, "Error Setting Jitterbuffer to %dms (%d frames)\n", len, qlen);
}
} else {
switch_rtp_deactivate_jitter_buffer(tech_pvt->rtp_session);
}
}
}
break;
default:
break;
}
end:
return SWITCH_STATUS_SUCCESS;
}
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