parse extmap-allow-mixed

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

@@ -174,7 +174,7 @@ public class RtpContentMap {
         }
 
         public static DescriptionTransport of(final SessionDescription sessionDescription, final SessionDescription.Media media) {
-            final RtpDescription rtpDescription = RtpDescription.of(media);
+            final RtpDescription rtpDescription = RtpDescription.of(sessionDescription, media);
             final IceUdpTransportInfo transportInfo = IceUdpTransportInfo.of(sessionDescription, media);
             return new DescriptionTransport(rtpDescription, transportInfo);
         }

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

@@ -198,10 +198,10 @@ public class SessionDescription {
                 checkNoWhitespace(type, "feedback negotiation type must not contain whitespace");
                 mediaAttributes.put("rtcp-fb", "* " + type + (Strings.isNullOrEmpty(subtype) ? "" : " " + subtype));
             }
-            for (RtpDescription.FeedbackNegotiationTrrInt feedbackNegotiationTrrInt : description.feedbackNegotiationTrrInts()) {
+            for (final RtpDescription.FeedbackNegotiationTrrInt feedbackNegotiationTrrInt : description.feedbackNegotiationTrrInts()) {
                 mediaAttributes.put("rtcp-fb", "* trr-int " + feedbackNegotiationTrrInt.getValue());
             }
-            for (RtpDescription.RtpHeaderExtension extension : description.getHeaderExtensions()) {
+            for (final RtpDescription.RtpHeaderExtension extension : description.getHeaderExtensions()) {
                 final String id = extension.getId();
                 final String uri = extension.getUri();
                 if (Strings.isNullOrEmpty(id)) {
@@ -214,7 +214,12 @@ public class SessionDescription {
                 checkNoWhitespace(uri, "feedback negotiation uri must not contain whitespace");
                 mediaAttributes.put("extmap", id + " " + uri);
             }
-            for (RtpDescription.SourceGroup sourceGroup : description.getSourceGroups()) {
+
+            if (description.hasChild("extmap-allow-mixed", Namespace.JINGLE_RTP_HEADER_EXTENSIONS)) {
+                mediaAttributes.put("extmap-allow-mixed", "");
+            }
+
+            for (final RtpDescription.SourceGroup sourceGroup : description.getSourceGroups()) {
                 final String semantics = sourceGroup.getSemantics();
                 final List<String> groups = sourceGroup.getSsrcs();
                 if (Strings.isNullOrEmpty(semantics)) {
@@ -226,8 +231,8 @@ public class SessionDescription {
                 }
                 mediaAttributes.put("ssrc-group", String.format("%s %s", semantics, Joiner.on(' ').join(groups)));
             }
-            for (RtpDescription.Source source : description.getSources()) {
+            for (final RtpDescription.Source source : description.getSources()) {
-                for (RtpDescription.Source.Parameter parameter : source.getParameters()) {
+                for (final RtpDescription.Source.Parameter parameter : source.getParameters()) {
                     final String id = source.getSsrcId();
                     final String parameterName = parameter.getParameterName();
                     final String parameterValue = parameter.getParameterValue();

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

@@ -6,11 +6,14 @@ import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Sets;
 
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import eu.siacs.conversations.xml.Element;
 import eu.siacs.conversations.xml.Namespace;
@@ -530,11 +533,15 @@ public class RtpDescription extends GenericDescription {
         }
     }
 
-    public static RtpDescription of(final SessionDescription.Media media) {
+    public static RtpDescription of(final SessionDescription sessionDescription, final SessionDescription.Media media) {
         final RtpDescription rtpDescription = new RtpDescription(media.media);
         final Map<String, List<Parameter>> parameterMap = new HashMap<>();
         final ArrayListMultimap<String, Element> feedbackNegotiationMap = ArrayListMultimap.create();
         final ArrayListMultimap<String, Source.Parameter> sourceParameterMap = ArrayListMultimap.create();
+        final Set<String> attributes = Sets.newHashSet(Iterables.concat(
+                sessionDescription.attributes.keySet(),
+                media.attributes.keySet()
+        ));
         for (final String rtcpFb : media.attributes.get("rtcp-fb")) {
             final String[] parts = rtcpFb.split(" ");
             if (parts.length >= 2) {
@@ -581,6 +588,9 @@ public class RtpDescription extends GenericDescription {
                 rtpDescription.addChild(extension);
             }
         }
+        if (attributes.contains("extmap-allow-mixed")) {
+            rtpDescription.addChild("extmap-allow-mixed", Namespace.JINGLE_RTP_HEADER_EXTENSIONS);
+        }
         for (final String ssrcGroup : media.attributes.get("ssrc-group")) {
             final String[] parts = ssrcGroup.split(" ");
             if (parts.length >= 2) {