Work in progress: resolve media attributes for inbound call according to SDP. Issue #1550.

Author: ghjansen

restcomm/restcomm.commons/src/main/java/org/restcomm/connect/commons/util/SdpUtils.java

@@ -141,4 +141,28 @@ public static boolean isWebRTCSDP(final String contentType, final byte[] data) t
         return isWebRTC;
     }
 
+    public static boolean isAudioSDP(final String contentType, final byte[] data) throws SdpParseException {
+        boolean isAudioSdp = false;
+        if (contentType.equalsIgnoreCase("application/sdp")) {
+            String sdp = getSdp(contentType, data);
+            if (sdp != null && sdp.contains("m=audio") || sdp.contains("m=AUDIO")
+                    || sdp.contains("m=Audio")) {
+                isAudioSdp = true;
+            }
+        }
+        return isAudioSdp;
+    }
+
+    public static boolean isVideoSDP(final String contentType, final byte[] data) throws SdpParseException {
+        boolean isVideoSdp = false;
+        if (contentType.equalsIgnoreCase("application/sdp")) {
+            String sdp = getSdp(contentType, data);
+            if (sdp != null && sdp.contains("m=video") || sdp.contains("m=VIDEO")
+                    || sdp.contains("m=Video")) {
+                isVideoSdp = true;
+            }
+        }
+        return isVideoSdp;
+    }
+
 }

restcomm/restcomm.telephony/src/main/java/org/restcomm/connect/telephony/Call.java

@@ -1380,7 +1380,19 @@ private CreateMediaSession generateRequest(SipServletMessage sipMessage) throws
             }
             offer = SdpUtils.patch(sipMessage.getContentType(), sdp, externalIp);
         }
-        return new CreateMediaSession("sendrecv", offer, false, webrtc, inboundCallSid);
+
+        //Prepare media attributes to be used by call controller
+        final boolean isAudioSdp = SdpUtils.isAudioSDP(sipMessage.getContentType(), sipMessage.getRawContent());
+        final boolean isVideoSdp = SdpUtils.isVideoSDP(sipMessage.getContentType(), sipMessage.getRawContent());
+        if(isAudioSdp && isVideoSdp){
+            //Call with audio and video
+            mediaAttributes = new MediaAttributes(MediaAttributes.MediaType.AUDIO_VIDEO, MediaAttributes.VideoResolution.SEVEN_TWENTY_P);
+        } else if (isVideoSdp) {
+            //Call with video and no audio
+            mediaAttributes = new MediaAttributes(MediaAttributes.MediaType.VIDEO_ONLY, MediaAttributes.VideoResolution.SEVEN_TWENTY_P);
+        } //mediaAttributes remains with default value (AUDIO_ONLY) if both isAudioSdp and isVideoSdp are false
+
+        return new CreateMediaSession("sendrecv", offer, false, webrtc, inboundCallSid, mediaAttributes);
     }
 
     private final class UpdatingMediaSession extends AbstractAction {