dummy code to get sdp out of (non-working) libwebrtc

proguard-rules.pro

@@ -11,6 +11,7 @@
 -keep class com.google.android.gms.**
 
 -keep class org.openintents.openpgp.*
+-keep class org.webrtc.** { *; }
 
 -dontwarn org.bouncycastle.mail.**
 -dontwarn org.bouncycastle.x509.util.LDAPStoreHelper

src/main/java/eu/siacs/conversations/xmpp/jingle/JingleRtpConnection.java

@@ -8,8 +8,19 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Maps;
 
 import org.checkerframework.checker.nullness.compatqual.NullableDecl;
+import org.webrtc.AudioSource;
+import org.webrtc.AudioTrack;
+import org.webrtc.DataChannel;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaConstraints;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.PeerConnectionFactory;
+import org.webrtc.RtpReceiver;
+import org.webrtc.SdpObserver;
 
 import java.util.Collection;
+import java.util.Collections;
 import java.util.Map;
 
 import eu.siacs.conversations.Config;
@@ -142,6 +153,7 @@ public class JingleRtpConnection extends AbstractJingleConnection {
     }
 
     private void sendSessionInitiate() {
+        setupWebRTC();
         Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": sending session-initiate");
     }
 
@@ -162,6 +174,110 @@ public class JingleRtpConnection extends AbstractJingleConnection {
         }
     }
 
+    private void setupWebRTC() {
+        PeerConnectionFactory.initialize(
+                PeerConnectionFactory.InitializationOptions.builder(xmppConnectionService).createInitializationOptions()
+        );
+        final PeerConnectionFactory.Options options = new PeerConnectionFactory.Options();
+        PeerConnectionFactory peerConnectionFactory = PeerConnectionFactory.builder().createPeerConnectionFactory();
+
+        final AudioSource audioSource = peerConnectionFactory.createAudioSource(new MediaConstraints());
+
+        final AudioTrack audioTrack = peerConnectionFactory.createAudioTrack("my-audio-track", audioSource);
+        final MediaStream stream = peerConnectionFactory.createLocalMediaStream("my-media-stream");
+        stream.addTrack(audioTrack);
+
+
+        PeerConnection peer = peerConnectionFactory.createPeerConnection(Collections.emptyList(), new PeerConnection.Observer() {
+            @Override
+            public void onSignalingChange(PeerConnection.SignalingState signalingState) {
+
+            }
+
+            @Override
+            public void onIceConnectionChange(PeerConnection.IceConnectionState iceConnectionState) {
+
+            }
+
+            @Override
+            public void onIceConnectionReceivingChange(boolean b) {
+
+            }
+
+            @Override
+            public void onIceGatheringChange(PeerConnection.IceGatheringState iceGatheringState) {
+
+            }
+
+            @Override
+            public void onIceCandidate(IceCandidate iceCandidate) {
+
+            }
+
+            @Override
+            public void onIceCandidatesRemoved(IceCandidate[] iceCandidates) {
+
+            }
+
+            @Override
+            public void onAddStream(MediaStream mediaStream) {
+
+            }
+
+            @Override
+            public void onRemoveStream(MediaStream mediaStream) {
+
+            }
+
+            @Override
+            public void onDataChannel(DataChannel dataChannel) {
+
+            }
+
+            @Override
+            public void onRenegotiationNeeded() {
+
+            }
+
+            @Override
+            public void onAddTrack(RtpReceiver rtpReceiver, MediaStream[] mediaStreams) {
+
+            }
+        });
+
+        peer.addStream(stream);
+
+        peer.createOffer(new SdpObserver() {
+
+            @Override
+            public void onCreateSuccess(org.webrtc.SessionDescription description) {
+                final SessionDescription sessionDescription = SessionDescription.parse(description.description);
+                for (SessionDescription.Media media : sessionDescription.media) {
+                    Log.d(Config.LOGTAG, "media: " + media.protocol);
+                    for (SessionDescription.Attribute attribute : media.attributes) {
+                        Log.d(Config.LOGTAG, "attribute key=" + attribute.key + ", value=" + attribute.value);
+                    }
+                }
+                Log.d(Config.LOGTAG, sessionDescription.toString());
+            }
+
+            @Override
+            public void onSetSuccess() {
+
+            }
+
+            @Override
+            public void onCreateFailure(String s) {
+
+            }
+
+            @Override
+            public void onSetFailure(String s) {
+
+            }
+        }, new MediaConstraints());
+    }
+
     private void pickupCallFromProposed() {
         transitionOrThrow(State.PROCEED);
         final MessagePacket messagePacket = new MessagePacket();

src/main/java/eu/siacs/conversations/xmpp/jingle/SessionDescription.java

@@ -11,11 +11,11 @@ import eu.siacs.conversations.Config;
 
 public class SessionDescription {
 
-    private final int version;
+    public final int version;
-    private final String name;
+    public final String name;
-    private final String connectionData;
+    public final String connectionData;
-    private final List<Attribute> attributes;
+    public final List<Attribute> attributes;
-    private final List<Media> media;
+    public final List<Media> media;
 
 
     public SessionDescription(int version, String name, String connectionData, List<Attribute> attributes, List<Media> media) {
@@ -63,7 +63,8 @@ public class SessionDescription {
                     break;
                 case 'm':
                     if (currentMediaBuilder == null) {
-                        sessionDescriptionBuilder.setAttributes(attributeBuilder.build());;
+                        sessionDescriptionBuilder.setAttributes(attributeBuilder.build());
+                        ;
                     } else {
                         currentMediaBuilder.setAttributes(attributeBuilder.build());
                         mediaBuilder.add(currentMediaBuilder.createMedia());
@@ -104,8 +105,8 @@ public class SessionDescription {
     }
 
     public static class Attribute {
-        private final String key;
+        public final String key;
-        private final String value;
+        public final String value;
 
         public Attribute(String key, String value) {
             this.key = key;
@@ -125,12 +126,12 @@ public class SessionDescription {
     }
 
     public static class Media {
-        private final String media;
+        public final String media;
-        private final int port;
+        public final int port;
-        private final String protocol;
+        public final String protocol;
-        private final List<Integer> formats;
+        public final List<Integer> formats;
-        private final String connectionData;
+        public final String connectionData;
-        private final List<Attribute> attributes;
+        public final List<Attribute> attributes;
 
         public Media(String media, int port, String protocol, List<Integer> formats, String connectionData, List<Attribute> attributes) {
             this.media = media;

src/main/java/eu/siacs/conversations/xmpp/jingle/stanzas/RtpDescription.java

@@ -52,6 +52,8 @@ public class RtpDescription extends GenericDescription {
     //TODO: support for https://xmpp.org/extensions/xep-0293.html
 
 
+    //XEP-0294: Jingle RTP Header Extensions Negotiation
+    //maps to `extmap:$id $uri`
     public static class RtpHeaderExtension extends Element {
 
         private RtpHeaderExtension() {
@@ -76,6 +78,7 @@ public class RtpDescription extends GenericDescription {
         }
     }
 
+    //maps to `rtpmap $id $name/$clockrate/$channels`
     public static class PayloadType extends Element {
 
         private PayloadType(String name, String xmlns) {
@@ -132,6 +135,8 @@ public class RtpDescription extends GenericDescription {
         }
     }
 
+    //map to `fmtp $id key=value;key=value
+    //where id is the id of the parent payload-type
     public static class Parameter extends Element {
 
         private Parameter() {