/*
* Copyright (C) 2012-2018 Doubango Telecom <http://www.doubango.org>
* License: BSD
* This file is part of Open Source sipML5 solution <http://www.sipml5.org>
*/
tsdp_message.prototype.__s_o_username_default = "webrtc";
tsdp_message.prototype.__i_o_session_ver_default = 2301;
tsdp_message.prototype.__i_o_session_id_default = 1983;
tsdp_message.prototype.__s_s_value_default = "-";
function tsdp_message(s_addr, b_ipv6, i_version) {
this.ao_headers = new Array();
if (s_addr) {
/* RFC 3264 - 5 Generating the Initial Offer
The numeric value of the session id and version in the o line MUST be
representable with a 64 bit signed integer. The initial value of the version MUST be less than
(2**62)-1, to avoid rollovers.
*/
this.add_headers(
new tsdp_header_V(0),
new tsdp_header_O(
tsdp_message.prototype.__s_o_username_default,
tsdp_message.prototype.__i_o_session_id_default,
i_version,
"IN",
b_ipv6 ? "IP6" : "IP4",
s_addr));
/* RFC 3264 - 5 Generating the Initial Offer
The SDP "s=" line conveys the subject of the session, which is
reasonably defined for multicast, but ill defined for unicast. For
unicast sessions, it is RECOMMENDED that it consist of a single space
character (0x20) or a dash (-).
Unfortunately, SDP does not allow the "s=" line to be empty.
*/
this.add_headers(new tsdp_header_S(tsdp_message.prototype.__s_s_value_default));
/* RFC 3264 - 5 Generating the Initial Offer
The SDP "t=" line conveys the time of the session. Generally,
streams for unicast sessions are created and destroyed through
external signaling means, such as SIP. In that case, the "t=" line
SHOULD have a value of "0 0".
*/
this.add_headers(new tsdp_header_T(0, 0));
}
}
tsdp_message.prototype.get_media_type = function () {
var i_id = tmedia_type_e.NONE.i_id;
var i_index = 0;
var o_hdr_M, o_hdr_A;
while ((o_hdr_M = this.get_header_at(tsdp_header_type_e.M, i_index++))) {
if (o_hdr_M.i_port == 0) { // media disabled?
continue;
}
if (tsk_string_iequals(o_hdr_M.s_media, "audio")) {
i_id |= tmedia_type_e.AUDIO.i_id;
}
else if (tsk_string_iequals(o_hdr_M.s_media, "video")) {
o_hdr_A = o_hdr_M.find_a_at("content", 0);
if (o_hdr_A && !tsk_string_iequals(o_hdr_A.s_value, "main")) {
i_id |= tmedia_type_e.BFCPVIDEO.i_id;
}
else {
i_id |= tmedia_type_e.VIDEO.i_id;
}
}
else if (tsk_string_iequals(o_hdr_M.s_media, "message")) {
i_id |= tmedia_type_e.MSRP.i_id;
}
}
return tmedia_type_from_id(i_id);
}
// add_headers(...)
tsdp_message.prototype.add_headers = function () {
for (var i = 0; i < arguments.length; ++i) {
if (arguments[i]) {
this.ao_headers.push(arguments[i]);
}
}
this.ao_headers.sort(tsdp_header_compare_by_rank);
}
tsdp_message.prototype.add_header = function (o_header) {
this.add_headers(o_header);
}
tsdp_message.prototype.remove_header = function (e_type) {
for (var i_index = 0; i_index < this.ao_headers.length; ) {
if (this.ao_headers[i_index].e_type == e_type) {
this.ao_headers.splice(i_index, 1);
continue;
}
++i_index;
}
}
tsdp_message.prototype.get_header_at = function(e_type, i_index){
var i_pos = 0;
for (var i = 0; i < this.ao_headers.length; ++i) {
if(this.ao_headers[i].e_type == e_type){
if(i_pos++ >= i_index){
return this.ao_headers[i];
}
}
}
return null;
}
tsdp_message.prototype.get_header = function (e_type) {
return this.get_header_at(e_type, 0);
}
tsdp_message.prototype.get_header_by_name = function (c_name) {
for (var i = 0; i < this.ao_headers.length; ++i) {
if (this.ao_headers[i].get_name() == c_name) {
return c_name;
}
}
return null;
}
tsdp_message.prototype.get_header_a_at = function(s_field, i_index) {
if(!s_field || i_index < 0){
tsk_utils_log_error("Invalid argument");
return null;
}
var i_pos = 0;
for(var i = 0; i < this.ao_headers.length; ++i){
if(this.ao_headers[i].e_type == tsdp_header_type_e.A && this.ao_headers[i].s_field == s_field){
if(i_pos++ >= i_index){
return this.ao_headers[i];
}
}
}
return null;
}
tsdp_message.prototype.get_header_a = function(s_field) {
return this.get_header_a_at(s_field, 0);
}
tsdp_message.prototype.add_media = function (s_media, i_port, s_proto) {
this.add_headers(new tsdp_header_M(s_media, i_port, s_proto));
}
tsdp_message.prototype.remove_media = function (s_media) {
for (var i = 0; i < this.ao_headers.length; ++i) {
if (this.ao_headers[i].e_type == tsdp_header_type_e.M) {
if (this.ao_headers[i].s_media == s_media) {
this.ao_headers.splice(i, 1);
}
}
}
}
tsdp_message.prototype.get_header_m_by_name = function(s_media){
if(!s_media){
tsk_utils_log_error("Invalid argument");
return null;
}
for (var i = 0; i < this.ao_headers.length; ++i) {
if (this.ao_headers[i] && this.ao_headers[i].e_type == tsdp_header_type_e.M) {
if(tsk_string_iequals(this.ao_headers[i].s_media, s_media)){
return this.ao_headers[i];
}
}
}
return null;
}
tsdp_message.prototype.has_media = function (s_media) {
return this.get_header_m_by_name(s_media) != null;
}
/* ================= 3GPP TS 34.610 :: Communication HOLD (HOLD) using IP Multimedia (IM) Core ================*/
tsdp_message.prototype.hold = function(s_media){
if(!s_media){
tsk_utils_log_error("Invalid argument");
return -1;
}
// 3GPP TS 34.610-900 - 4.5.2.1 Actions at the invoking UE
var o_hdr_M = this.get_header_m_by_name(s_media);
if(o_hdr_M){
o_hdr_M.hold(true);
}
return 0;
}
tsdp_message.prototype.resume = function(s_media){
if(!s_media){
tsk_utils_log_error("Invalid argument");
return -1;
}
// 3GPP TS 34.610-900 - 4.5.2.1 Actions at the invoking UE
var o_hdr_M = this.get_header_m_by_name(s_media);
if(o_hdr_M){
o_hdr_M.resume(true);
}
return 0;
}
tsdp_message.prototype.toString = function (s_endline) {
var s_str = "";
if (!s_endline) {
s_endline = "\r\n";
}
for (var i = 0; i < this.ao_headers.length; ++i) {
if (this.ao_headers[i])
{
s_str += this.ao_headers[i].tostring_full(false, s_endline);
}
}
return s_str;
}
if(!window.__b_release_mode){
tsdp_api_add_js_scripts('head',
tsdp_path + 'tsdp_parser_message.js'
);
}
