From ef5c1256f3a64502880bb232ea17a673e3e4eb10 Mon Sep 17 00:00:00 2001 From: Anthony Minessale Date: Wed, 8 Aug 2012 14:46:38 -0500 Subject: [PATCH] add rtp endpoint contributed by sangoma --- src/mod/endpoints/mod_sofia/Makefile.am | 2 +- src/mod/endpoints/mod_sofia/mod_sofia.c | 2 + src/mod/endpoints/mod_sofia/mod_sofia.h | 1 + src/mod/endpoints/mod_sofia/rtp.c | 649 ++++++++++++++++++++++++ 4 files changed, 653 insertions(+), 1 deletion(-) create mode 100644 src/mod/endpoints/mod_sofia/rtp.c diff --git a/src/mod/endpoints/mod_sofia/Makefile.am b/src/mod/endpoints/mod_sofia/Makefile.am index fb0ab25e0b..efd6b2c385 100644 --- a/src/mod/endpoints/mod_sofia/Makefile.am +++ b/src/mod/endpoints/mod_sofia/Makefile.am @@ -9,7 +9,7 @@ SOFIAUA_BUILDDIR=$(SOFIA_BUILDDIR)/libsofia-sip-ua SOFIALA=$(SOFIAUA_BUILDDIR)/libsofia-sip-ua.la mod_LTLIBRARIES = mod_sofia.la -mod_sofia_la_SOURCES = mod_sofia.c sofia.c sofia_glue.c sofia_presence.c sofia_reg.c sip-dig.c mod_sofia.h +mod_sofia_la_SOURCES = mod_sofia.c sofia.c sofia_glue.c sofia_presence.c sofia_reg.c sip-dig.c rtp.c mod_sofia.h mod_sofia_la_CFLAGS = $(AM_CFLAGS) -I. $(SOFIA_CMD_LINE_CFLAGS) mod_sofia_la_CFLAGS += -I$(SOFIAUA_DIR)/bnf -I$(SOFIAUA_BUILDDIR)/bnf mod_sofia_la_CFLAGS += -I$(SOFIAUA_DIR)/http -I$(SOFIAUA_BUILDDIR)/http diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.c b/src/mod/endpoints/mod_sofia/mod_sofia.c index 52e7333607..650b898399 100644 --- a/src/mod/endpoints/mod_sofia/mod_sofia.c +++ b/src/mod/endpoints/mod_sofia/mod_sofia.c @@ -5705,6 +5705,8 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_sofia_load) SWITCH_ADD_API(api_interface, "sofia_dig", "SIP DIG", sip_dig_function, ""); SWITCH_ADD_CHAT(chat_interface, SOFIA_CHAT_PROTO, sofia_presence_chat_send); + crtp_init(*module_interface); + /* indicate that the module should continue to be loaded */ return SWITCH_STATUS_SUCCESS; } diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.h b/src/mod/endpoints/mod_sofia/mod_sofia.h index 5ef35315e7..6d01de8a38 100644 --- a/src/mod/endpoints/mod_sofia/mod_sofia.h +++ b/src/mod/endpoints/mod_sofia/mod_sofia.h @@ -1190,6 +1190,7 @@ void sofia_process_dispatch_event(sofia_dispatch_event_t **dep); char *sofia_glue_get_host(const char *str, switch_memory_pool_t *pool); void sofia_presence_check_subscriptions(sofia_profile_t *profile, time_t now); void sofia_msg_thread_start(int idx); +void crtp_init(switch_loadable_module_interface_t *module_interface); /* For Emacs: diff --git a/src/mod/endpoints/mod_sofia/rtp.c b/src/mod/endpoints/mod_sofia/rtp.c new file mode 100644 index 0000000000..bf3e36ca19 --- /dev/null +++ b/src/mod/endpoints/mod_sofia/rtp.c @@ -0,0 +1,649 @@ +/* + * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application + * Copyright (C) 2005-2011, Anthony Minessale II + * + * 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 + * Portions created by the Initial Developer are Copyright (C) + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Mathieu Rene + * + * rtp.c -- RTP Controllable Channel Module + * + */ + +#include +#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*/ + sofia_dtmf_t dtmf_type; + 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 = { + .on_init = channel_on_init, + .on_destroy = channel_on_destroy +}; + +switch_io_routines_t crtp_io_routines = { + .outgoing_channel = channel_outgoing_channel, + .read_frame = channel_read_frame, + .write_frame = channel_write_frame, + .receive_message = channel_receive_message, + .receive_event = channel_receive_event, + .send_dtmf = channel_send_dtmf +}; + + +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, + tech_pvt->read_codec.implementation->samples_per_packet, ptime * 1000, + flags, "soft", &err, switch_core_session_get_pool(*new_session)))) { + 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); + } + return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER; + +} + +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])) { + int32_t flags = 0; + if (!strcasecmp(msg->string_array_arg[0], "read")) { + flags |= SWITCH_RTP_FLAG_DEBUG_RTP_READ; + } else if (!strcasecmp(msg->string_array_arg[0], "write")) { + flags |= SWITCH_RTP_FLAG_DEBUG_RTP_WRITE; + } else if (!strcasecmp(msg->string_array_arg[0], "both")) { + flags |= SWITCH_RTP_FLAG_DEBUG_RTP_READ | SWITCH_RTP_FLAG_DEBUG_RTP_WRITE; + } + + if (flags) { + if (switch_true(msg->string_array_arg[1])) { + switch_rtp_set_flag(tech_pvt->rtp_session, flags); + } else { + switch_rtp_clear_flag(tech_pvt->rtp_session, flags); + } + } 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; +} +