Karkakol/add active simulcast encodings

.gitignore

@@ -1,16 +1,10 @@
 *.iml
 .gradle
 /local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
-/.idea/deploymentTargetDropDown.xml
-/.idea/misc.xml
+
 .DS_Store
 /build
 /captures
 .externalNativeBuild
 .cxx
+/.idea/

MembraneRTC/src/main/java/org/membraneframework/rtc/InternalMembraneRTC.kt

@@ -14,6 +14,7 @@ import org.membraneframework.rtc.models.EncodingReason
 import org.membraneframework.rtc.models.Endpoint
 import org.membraneframework.rtc.models.RTCStats
 import org.membraneframework.rtc.models.TrackContext
+import org.membraneframework.rtc.models.TrackData
 import org.membraneframework.rtc.models.VadStatus
 import org.membraneframework.rtc.utils.ClosableCoroutineScope
 import org.membraneframework.rtc.utils.Metadata
@@ -49,7 +50,7 @@ internal class InternalMembraneRTC
             )
 
         private var localEndpoint: Endpoint =
-            Endpoint(id = "", type = "webrtc", metadata = mapOf(), trackIdToMetadata = mapOf())
+            Endpoint(id = "", type = "webrtc", metadata = mapOf(), tracks = mapOf())
 
         // mapping from endpoint's id to the endpoint himself
         private val remoteEndpoints = HashMap<String, Endpoint>()
@@ -247,9 +248,15 @@ internal class InternalMembraneRTC
             otherEndpoints.forEach {
                 this.remoteEndpoints[it.id] = it
 
-                for ((trackId, metadata) in it.trackIdToMetadata) {
+                for ((trackId, trackData) in it.tracks) {
                     val context =
-                        TrackContext(track = null, endpoint = it, trackId = trackId, metadata = metadata ?: mapOf())
+                        TrackContext(
+                            track = null,
+                            endpoint = it,
+                            trackId = trackId,
+                            metadata = trackData.metadata ?: mapOf(),
+                            simulcastConfig = trackData.simulcastConfig
+                        )
 
                     this.trackContexts[trackId] = context
 
@@ -283,7 +290,7 @@ internal class InternalMembraneRTC
                     return
                 }
 
-            val trackIds: List<String> = endpoint.trackIdToMetadata.keys.toList()
+            val trackIds: List<String> = endpoint.tracks.keys.toList()
 
             trackIds.forEach {
                 trackContexts.remove(it)?.let { ctx ->
@@ -319,7 +326,7 @@ internal class InternalMembraneRTC
                         }
                     rtcEngineCommunication.sdpOffer(
                         offer.description,
-                        localEndpoint.trackIdToMetadata,
+                        localEndpoint.tracks.mapValues { it.value.metadata },
                         offer.midToTrackIdMapping
                     )
                 } catch (e: Exception) {
@@ -375,7 +382,7 @@ internal class InternalMembraneRTC
 
         override fun onTracksAdded(
             endpointId: String,
-            trackIdToMetadata: Map<String, Metadata?>
+            tracks: Map<String, TrackData>
         ) {
             if (localEndpoint.id == endpointId) return
 
@@ -385,13 +392,19 @@ internal class InternalMembraneRTC
                     return
                 }
 
-            val updatedEndpoint = endpoint.copy(trackIdToMetadata = trackIdToMetadata)
+            val updatedEndpoint = endpoint.copy(tracks = tracks)
 
             remoteEndpoints[updatedEndpoint.id] = updatedEndpoint
 
-            for ((trackId, metadata) in updatedEndpoint.trackIdToMetadata) {
+            for ((trackId, trackData) in updatedEndpoint.tracks) {
                 val context =
-                    TrackContext(track = null, endpoint = endpoint, trackId = trackId, metadata = metadata ?: mapOf())
+                    TrackContext(
+                        track = null,
+                        endpoint = endpoint,
+                        trackId = trackId,
+                        metadata = trackData.metadata ?: mapOf(),
+                        simulcastConfig = trackData.simulcastConfig
+                    )
 
                 this.trackContexts[trackId] = context
 

MembraneRTC/src/main/java/org/membraneframework/rtc/RTCEngineCommunication.kt

@@ -124,7 +124,11 @@ internal class RTCEngineCommunication
                         event.data.trackId,
                         event.data.metadata
                     )
-                is TracksAdded -> engineListener.onTracksAdded(event.data.endpointId, event.data.trackIdToMetadata)
+                is TracksAdded ->
+                    engineListener.onTracksAdded(
+                        event.data.endpointId,
+                        event.data.tracks
+                    )
                 is TracksRemoved -> engineListener.onTracksRemoved(event.data.endpointId, event.data.trackIds)
                 is EncodingSwitched ->
                     engineListener.onTrackEncodingChanged(

MembraneRTC/src/main/java/org/membraneframework/rtc/RTCEngineListener.kt

@@ -2,6 +2,7 @@ package org.membraneframework.rtc
 
 import org.membraneframework.rtc.events.OfferData
 import org.membraneframework.rtc.models.Endpoint
+import org.membraneframework.rtc.models.TrackData
 import org.membraneframework.rtc.utils.Metadata
 import org.membraneframework.rtc.utils.SerializedMediaEvent
 
@@ -41,7 +42,7 @@ internal interface RTCEngineListener {
 
     fun onTracksAdded(
         endpointId: String,
-        trackIdToMetadata: Map<String, Metadata?>
+        tracks: Map<String, TrackData>
     )
 
     fun onTracksRemoved(