* #39101: updated pjsip stack, many android build enhancements.

The main issue here is due to the build system of the stack compared to a pure Android
NDK project. Generating arm and x86 ABI at the same time does not seem to be possible.
diff --git a/jni/pjproject-android/pjsip-apps/src/samples/pjsua2_demo.cpp b/jni/pjproject-android/pjsip-apps/src/samples/pjsua2_demo.cpp
new file mode 100644
index 0000000..26bb8ad
--- /dev/null
+++ b/jni/pjproject-android/pjsip-apps/src/samples/pjsua2_demo.cpp
@@ -0,0 +1,323 @@
+/* $Id: pjsua2_demo.cpp 4708 2014-01-21 10:59:25Z nanang $ */
+/*
+ * Copyright (C) 2008-2013 Teluu Inc. (http://www.teluu.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <pjsua2.hpp>
+#include <iostream>
+#include <memory>
+#include <pj/file_access.h>
+
+using namespace pj;
+
+class MyAccount;
+
+class MyCall : public Call
+{
+private:
+    MyAccount *myAcc;
+
+public:
+    MyCall(Account &acc, int call_id = PJSUA_INVALID_ID)
+    : Call(acc, call_id)
+    {
+        myAcc = (MyAccount *)&acc;
+    }
+    
+    virtual void onCallState(OnCallStateParam &prm);
+};
+
+class MyAccount : public Account
+{
+public:
+    std::vector<Call *> calls;
+    
+public:
+    MyAccount()
+    {}
+
+    ~MyAccount()
+    {
+        std::cout << "*** Account is being deleted: No of calls="
+                  << calls.size() << std::endl;
+    }
+    
+    void removeCall(Call *call)
+    {
+        for (std::vector<Call *>::iterator it = calls.begin();
+             it != calls.end(); ++it)
+        {
+            if (*it == call) {
+                calls.erase(it);
+                break;
+            }
+        }
+    }
+
+    virtual void onRegState(OnRegStateParam &prm)
+    {
+	AccountInfo ai = getInfo();
+	std::cout << (ai.regIsActive? "*** Register: code=" : "*** Unregister: code=")
+		  << prm.code << std::endl;
+    }
+    
+    virtual void onIncomingCall(OnIncomingCallParam &iprm)
+    {
+        Call *call = new MyCall(*this, iprm.callId);
+        CallInfo ci = call->getInfo();
+        CallOpParam prm;
+        
+        std::cout << "*** Incoming Call: " <<  ci.remoteUri << " ["
+                  << ci.stateText << "]" << std::endl;
+        
+        calls.push_back(call);
+        prm.statusCode = (pjsip_status_code)200;
+        call->answer(prm);
+    }
+};
+
+void MyCall::onCallState(OnCallStateParam &prm)
+{
+    PJ_UNUSED_ARG(prm);
+
+    CallInfo ci = getInfo();
+    std::cout << "*** Call: " <<  ci.remoteUri << " [" << ci.stateText
+              << "]" << std::endl;
+    
+    if (ci.state == PJSIP_INV_STATE_DISCONNECTED) {
+        myAcc->removeCall(this);
+        /* Delete the call */
+        delete this;
+    }
+}
+
+static void mainProg1() throw(Error)
+{
+    Endpoint ep;
+
+    // Create library
+    ep.libCreate();
+
+    // Init library
+    EpConfig ep_cfg;
+    ep_cfg.logConfig.level = 4;
+    ep.libInit( ep_cfg );
+
+    // Transport
+    TransportConfig tcfg;
+    tcfg.port = 5060;
+    ep.transportCreate(PJSIP_TRANSPORT_UDP, tcfg);
+
+    // Start library
+    ep.libStart();
+    std::cout << "*** PJSUA2 STARTED ***" << std::endl;
+
+    // Add account
+    AccountConfig acc_cfg;
+    acc_cfg.idUri = "sip:test1@pjsip.org";
+    acc_cfg.regConfig.registrarUri = "sip:pjsip.org";
+    acc_cfg.sipConfig.authCreds.push_back( AuthCredInfo("digest", "*",
+                                                        "test1", 0, "test1") );
+    std::auto_ptr<MyAccount> acc(new MyAccount);
+    acc->create(acc_cfg);
+    
+    pj_thread_sleep(2000);
+    
+    // Make outgoing call
+    Call *call = new MyCall(*acc);
+    acc->calls.push_back(call);
+    CallOpParam prm(true);
+    prm.opt.audioCount = 1;
+    prm.opt.videoCount = 0;
+    call->makeCall("sip:test1@pjsip.org", prm);
+    
+    // Hangup all calls
+    pj_thread_sleep(8000);
+    ep.hangupAllCalls();
+    pj_thread_sleep(4000);
+    
+    // Destroy library
+    std::cout << "*** PJSUA2 SHUTTING DOWN ***" << std::endl;
+}
+
+void mainProg2() throw(Error)
+{
+    Endpoint ep;
+
+    // Create library
+    ep.libCreate();
+
+    string json_str;
+
+    {
+	EpConfig epCfg;
+	JsonDocument jDoc;
+
+	epCfg.uaConfig.maxCalls = 61;
+	epCfg.uaConfig.userAgent = "Just JSON Test";
+	epCfg.uaConfig.stunServer.push_back("stun1.pjsip.org");
+	epCfg.uaConfig.stunServer.push_back("stun2.pjsip.org");
+	epCfg.logConfig.filename = "THE.LOG";
+
+	jDoc.writeObject(epCfg);
+	json_str = jDoc.saveString();
+	std::cout << json_str << std::endl << std::endl;
+    }
+
+    {
+	EpConfig epCfg;
+	JsonDocument rDoc;
+	string output;
+
+	rDoc.loadString(json_str);
+	rDoc.readObject(epCfg);
+
+	JsonDocument wDoc;
+
+	wDoc.writeObject(epCfg);
+	json_str = wDoc.saveString();
+	std::cout << json_str << std::endl << std::endl;
+
+	wDoc.saveFile("jsontest.js");
+    }
+
+    {
+	EpConfig epCfg;
+	JsonDocument rDoc;
+
+	rDoc.loadFile("jsontest.js");
+	rDoc.readObject(epCfg);
+	pj_file_delete("jsontest.js");
+    }
+
+    ep.libDestroy();
+}
+
+
+void mainProg3() throw(Error)
+{
+    Endpoint ep;
+
+    // Create library
+    ep.libCreate();
+
+    // Init library
+    EpConfig ep_cfg;
+    ep.libInit( ep_cfg );
+
+    // Start library
+    ep.libStart();
+    std::cout << "*** PJSUA2 STARTED ***" << std::endl;
+
+    // Create player and recorder
+    {
+	AudioMediaPlayer amp;
+	amp.createPlayer("../../tests/pjsua/wavs/input.16.wav");
+
+	AudioMediaRecorder amr;
+	amr.createRecorder("recorder_test_output.wav");
+
+	amp.startTransmit(ep.audDevManager().getPlaybackDevMedia());
+	amp.startTransmit(amr);
+
+	pj_thread_sleep(5000);
+    }
+
+    ep.libDestroy();
+}
+
+
+void mainProg() throw(Error)
+{
+    Endpoint ep;
+
+    // Create library
+    ep.libCreate();
+
+    string json_str;
+
+    {
+	JsonDocument jdoc;
+	AccountConfig accCfg;
+
+	accCfg.idUri = "\"Just Test\" <sip:test@pjsip.org>";
+	accCfg.regConfig.registrarUri = "sip:pjsip.org";
+	SipHeader h;
+	h.hName = "X-Header";
+	h.hValue = "User header";
+	accCfg.regConfig.headers.push_back(h);
+
+	accCfg.sipConfig.proxies.push_back("<sip:sip.pjsip.org;transport=tcp>");
+	accCfg.sipConfig.proxies.push_back("<sip:sip.pjsip.org;transport=tls>");
+
+	accCfg.mediaConfig.transportConfig.tlsConfig.ciphers.push_back(1);
+	accCfg.mediaConfig.transportConfig.tlsConfig.ciphers.push_back(2);
+	accCfg.mediaConfig.transportConfig.tlsConfig.ciphers.push_back(3);
+
+	AuthCredInfo aci;
+	aci.scheme = "digest";
+	aci.username = "test";
+	aci.data = "passwd";
+	aci.realm = "*";
+	accCfg.sipConfig.authCreds.push_back(aci);
+
+	jdoc.writeObject(accCfg);
+	json_str = jdoc.saveString();
+	std::cout << "Original:" << std::endl;
+	std::cout << json_str << std::endl << std::endl;
+    }
+
+    {
+	JsonDocument rdoc;
+
+	rdoc.loadString(json_str);
+	AccountConfig accCfg;
+	rdoc.readObject(accCfg);
+
+	JsonDocument wdoc;
+	wdoc.writeObject(accCfg);
+	json_str = wdoc.saveString();
+
+	std::cout << "Parsed:" << std::endl;
+	std::cout << json_str << std::endl << std::endl;
+    }
+
+    ep.libDestroy();
+}
+
+int main()
+{
+    int ret = 0;
+
+    /* Test endpoint instantiation and destruction without libCreate(),
+     * libInit() etc.
+     */
+    {
+	Endpoint ep;
+    }
+
+    try {
+	mainProg3();
+	std::cout << "Success" << std::endl;
+    } catch (Error & err) {
+	std::cout << "Exception: " << err.info() << std::endl;
+	ret = 1;
+    }
+
+    return ret;
+}
+
+