VoIP: continue refactoring

2024-11-16 02:05:06 +08:00 · 2020-11-24 17:30:13 +01:00 · 2020-11-24 17:30:13 +01:00 · 7620aa4264
commit 7620aa4264
parent d7f7aa09fc
20 changed files with 366 additions and 407 deletions
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/call/CallListener.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/call/CallListener.kt
@ -57,5 +57,8 @@ interface CallListener {
     */
    fun onCallNegotiateReceived(callNegotiateContent: CallNegotiateContent)

+    /**
+     * Called when the call has been managed by an other session
+     */
    fun onCallManagedByOtherSession(callId: String)
 }
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/call/MxCall.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/call/MxCall.kt
@ -17,6 +17,7 @@
 package org.matrix.android.sdk.api.session.call

 import org.matrix.android.sdk.api.session.room.model.call.CallCandidate
+import org.matrix.android.sdk.api.session.room.model.call.CallHangupContent
 import org.matrix.android.sdk.api.util.Optional

 interface MxCallDetail {
@ -66,7 +67,7 @@ interface MxCall : MxCallDetail {
    /**
     * End the call
     */
-    fun hangUp()
+    fun hangUp(reason: CallHangupContent.Reason? = null)

    /**
     * Start a call
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/call/model/MxCallImpl.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/call/model/MxCallImpl.kt
@ -134,12 +134,12 @@ internal class MxCallImpl(
        state = CallState.Terminated
    }

-    override fun hangUp() {
+    override fun hangUp(reason: CallHangupContent.Reason?) {
        Timber.v("## VOIP hangup $callId")
        CallHangupContent(
                callId = callId,
                partyId = ourPartyId,
-                reason = CallHangupContent.Reason.USER_HANGUP
+                reason = reason ?: CallHangupContent.Reason.USER_HANGUP
        )
                .let { createEventAndLocalEcho(type = EventType.CALL_HANGUP, roomId = roomId, content = it.toContent()) }
                .also { eventSenderProcessor.postEvent(it) }
--- a/vector/src/main/java/im/vector/app/VectorApplication.kt
+++ b/vector/src/main/java/im/vector/app/VectorApplication.kt
@ -42,7 +42,7 @@ import im.vector.app.core.di.HasVectorInjector
 import im.vector.app.core.di.VectorComponent
 import im.vector.app.core.extensions.configureAndStart
 import im.vector.app.core.rx.RxConfig
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.configuration.VectorConfiguration
 import im.vector.app.features.disclaimer.doNotShowDisclaimerDialog
 import im.vector.app.features.lifecycle.VectorActivityLifecycleCallbacks
@ -90,7 +90,7 @@ class VectorApplication :
    @Inject lateinit var rxConfig: RxConfig
    @Inject lateinit var popupAlertManager: PopupAlertManager
    @Inject lateinit var pinLocker: PinLocker
-    @Inject lateinit var webRtcPeerConnectionManager: WebRtcPeerConnectionManager
+    @Inject lateinit var callManager: WebRtcCallManager

    lateinit var vectorComponent: VectorComponent

@ -175,7 +175,7 @@ class VectorApplication :
        })
        ProcessLifecycleOwner.get().lifecycle.addObserver(appStateHandler)
        ProcessLifecycleOwner.get().lifecycle.addObserver(pinLocker)
-        ProcessLifecycleOwner.get().lifecycle.addObserver(webRtcPeerConnectionManager)
+        ProcessLifecycleOwner.get().lifecycle.addObserver(callManager)
        // This should be done as early as possible
        // initKnownEmojiHashSet(appContext)

--- a/vector/src/main/java/im/vector/app/core/di/ActiveSessionHolder.kt
+++ b/vector/src/main/java/im/vector/app/core/di/ActiveSessionHolder.kt
@ -18,7 +18,7 @@ package im.vector.app.core.di

 import arrow.core.Option
 import im.vector.app.ActiveSessionDataSource
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.crypto.keysrequest.KeyRequestHandler
 import im.vector.app.features.crypto.verification.IncomingVerificationRequestHandler
 import im.vector.app.features.notifications.PushRuleTriggerListener
@ -35,7 +35,7 @@ class ActiveSessionHolder @Inject constructor(private val authenticationService:
                                              private val sessionObservableStore: ActiveSessionDataSource,
                                              private val keyRequestHandler: KeyRequestHandler,
                                              private val incomingVerificationRequestHandler: IncomingVerificationRequestHandler,
-                                              private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
+                                              private val callManager: WebRtcCallManager,
                                              private val pushRuleTriggerListener: PushRuleTriggerListener,
                                              private val sessionListener: SessionListener,
                                              private val imageManager: ImageManager
@ -52,7 +52,7 @@ class ActiveSessionHolder @Inject constructor(private val authenticationService:
        incomingVerificationRequestHandler.start(session)
        session.addListener(sessionListener)
        pushRuleTriggerListener.startWithSession(session)
-        session.callSignalingService().addCallListener(webRtcPeerConnectionManager)
+        session.callSignalingService().addCallListener(callManager)
        imageManager.onSessionStarted(session)
    }

@ -60,7 +60,7 @@ class ActiveSessionHolder @Inject constructor(private val authenticationService:
        // Do some cleanup first
        getSafeActiveSession()?.let {
            Timber.w("clearActiveSession of ${it.myUserId}")
-            it.callSignalingService().removeCallListener(webRtcPeerConnectionManager)
+            it.callSignalingService().removeCallListener(callManager)
            it.removeListener(sessionListener)
        }

--- a/vector/src/main/java/im/vector/app/core/di/VectorComponent.kt
+++ b/vector/src/main/java/im/vector/app/core/di/VectorComponent.kt
@ -29,7 +29,7 @@ import im.vector.app.core.error.ErrorFormatter
 import im.vector.app.core.pushers.PushersManager
 import im.vector.app.core.utils.AssetReader
 import im.vector.app.core.utils.DimensionConverter
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.configuration.VectorConfiguration
 import im.vector.app.features.crypto.keysrequest.KeyRequestHandler
 import im.vector.app.features.crypto.verification.IncomingVerificationRequestHandler
@ -153,7 +153,7 @@ interface VectorComponent {

    fun pinLocker(): PinLocker

-    fun webRtcPeerConnectionManager(): WebRtcPeerConnectionManager
+    fun webRtcPeerConnectionManager(): WebRtcCallManager

    @Component.Factory
    interface Factory {
--- a/vector/src/main/java/im/vector/app/core/services/CallService.kt
+++ b/vector/src/main/java/im/vector/app/core/services/CallService.kt
@ -25,7 +25,7 @@ import android.view.KeyEvent
 import androidx.core.content.ContextCompat
 import androidx.media.session.MediaButtonReceiver
 import im.vector.app.core.extensions.vectorComponent
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.call.telecom.CallConnection
 import im.vector.app.features.notifications.NotificationUtils
 import timber.log.Timber
@ -38,7 +38,7 @@ class CallService : VectorService(), WiredHeadsetStateReceiver.HeadsetEventListe
    private val connections = mutableMapOf<String, CallConnection>()

    private lateinit var notificationUtils: NotificationUtils
-    private lateinit var webRtcPeerConnectionManager: WebRtcPeerConnectionManager
+    private lateinit var callManager: WebRtcCallManager

    private var callRingPlayerIncoming: CallRingPlayerIncoming? = null
    private var callRingPlayerOutgoing: CallRingPlayerOutgoing? = null
@ -53,7 +53,7 @@ class CallService : VectorService(), WiredHeadsetStateReceiver.HeadsetEventListe
        override fun onMediaButtonEvent(mediaButtonEvent: Intent?): Boolean {
            val keyEvent = mediaButtonEvent?.getParcelableExtra<KeyEvent>(Intent.EXTRA_KEY_EVENT) ?: return false
            if (keyEvent.keyCode == KeyEvent.KEYCODE_HEADSETHOOK) {
-                webRtcPeerConnectionManager.headSetButtonTapped()
+                callManager.headSetButtonTapped()
                return true
            }
            return false
@ -63,7 +63,7 @@ class CallService : VectorService(), WiredHeadsetStateReceiver.HeadsetEventListe
    override fun onCreate() {
        super.onCreate()
        notificationUtils = vectorComponent().notificationUtils()
-        webRtcPeerConnectionManager = vectorComponent().webRtcPeerConnectionManager()
+        callManager = vectorComponent().webRtcPeerConnectionManager()
        callRingPlayerIncoming = CallRingPlayerIncoming(applicationContext)
        callRingPlayerOutgoing = CallRingPlayerOutgoing(applicationContext)
        wiredHeadsetStateReceiver = WiredHeadsetStateReceiver.createAndRegister(this, this)
@ -375,11 +375,11 @@ class CallService : VectorService(), WiredHeadsetStateReceiver.HeadsetEventListe

    override fun onHeadsetEvent(event: WiredHeadsetStateReceiver.HeadsetPlugEvent) {
        Timber.v("## VOIP: onHeadsetEvent $event")
-        webRtcPeerConnectionManager.onWiredDeviceEvent(event)
+        callManager.onWiredDeviceEvent(event)
    }

    override fun onBTHeadsetEvent(event: BluetoothHeadsetReceiver.BTHeadsetPlugEvent) {
        Timber.v("## VOIP: onBTHeadsetEvent $event")
-        webRtcPeerConnectionManager.onWirelessDeviceEvent(event)
+        callManager.onWirelessDeviceEvent(event)
    }
 }
--- a/vector/src/main/java/im/vector/app/core/ui/views/ActiveCallViewHolder.kt
+++ b/vector/src/main/java/im/vector/app/core/ui/views/ActiveCallViewHolder.kt
@ -20,7 +20,7 @@ import android.view.View
 import androidx.cardview.widget.CardView
 import androidx.core.view.isVisible
 import im.vector.app.core.utils.DebouncedClickListener
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import org.matrix.android.sdk.api.session.call.CallState
 import im.vector.app.features.call.utils.EglUtils
 import org.matrix.android.sdk.api.session.call.MxCall
@ -35,7 +35,7 @@ class ActiveCallViewHolder {

    private var activeCallPipInitialized = false

-    fun updateCall(activeCall: MxCall?, webRtcPeerConnectionManager: WebRtcPeerConnectionManager) {
+    fun updateCall(activeCall: MxCall?, callManager: WebRtcCallManager) {
        val hasActiveCall = activeCall?.state is CallState.Connected
        if (hasActiveCall) {
            val isVideoCall = activeCall?.isVideoCall == true
@ -44,14 +44,14 @@ class ActiveCallViewHolder {
            pipWrapper?.isVisible = isVideoCall
            activeCallPiP?.isVisible = isVideoCall
            activeCallPiP?.let {
-                webRtcPeerConnectionManager.attachViewRenderers(null, it, null)
+                callManager.attachViewRenderers(null, it, null)
            }
        } else {
            activeCallView?.isVisible = false
            activeCallPiP?.isVisible = false
            pipWrapper?.isVisible = false
            activeCallPiP?.let {
-                webRtcPeerConnectionManager.detachRenderers(listOf(it))
+                callManager.detachRenderers(listOf(it))
            }
        }
    }
@ -82,9 +82,9 @@ class ActiveCallViewHolder {
        )
    }

-    fun unBind(webRtcPeerConnectionManager: WebRtcPeerConnectionManager) {
+    fun unBind(callManager: WebRtcCallManager) {
        activeCallPiP?.let {
-            webRtcPeerConnectionManager.detachRenderers(listOf(it))
+            callManager.detachRenderers(listOf(it))
        }
        if (activeCallPipInitialized) {
            activeCallPiP?.release()
--- a/vector/src/main/java/im/vector/app/features/call/SharedActiveCallViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/call/SharedActiveCallViewModel.kt
@ -18,12 +18,12 @@ package im.vector.app.features.call

 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import org.matrix.android.sdk.api.session.call.MxCall
 import javax.inject.Inject

 class SharedActiveCallViewModel @Inject constructor(
-        private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager
+        private val callManager: WebRtcCallManager
 ) : ViewModel() {

    val activeCall: MutableLiveData<MxCall?> = MutableLiveData()
@ -37,7 +37,7 @@ class SharedActiveCallViewModel @Inject constructor(
        }
    }

-    private val listener = object : WebRtcPeerConnectionManager.CurrentCallListener {
+    private val listener = object : WebRtcCallManager.CurrentCallListener {
        override fun onCurrentCallChange(call: MxCall?) {
            activeCall.value?.removeListener(callStateListener)
            activeCall.postValue(call)
@ -46,13 +46,13 @@ class SharedActiveCallViewModel @Inject constructor(
    }

    init {
-        activeCall.postValue(webRtcPeerConnectionManager.currentCall?.mxCall)
-        webRtcPeerConnectionManager.addCurrentCallListener(listener)
+        activeCall.postValue(callManager.currentCall?.mxCall)
+        callManager.addCurrentCallListener(listener)
    }

    override fun onCleared() {
        activeCall.value?.removeListener(callStateListener)
-        webRtcPeerConnectionManager.removeCurrentCallListener(listener)
+        callManager.removeCurrentCallListener(listener)
        super.onCleared()
    }
 }
--- a/vector/src/main/java/im/vector/app/features/call/VectorCallActivity.kt
+++ b/vector/src/main/java/im/vector/app/features/call/VectorCallActivity.kt
@ -53,7 +53,7 @@ import kotlinx.android.parcel.Parcelize
 import kotlinx.android.synthetic.main.activity_call.*
 import org.matrix.android.sdk.api.session.call.CallState
 import im.vector.app.features.call.utils.EglUtils
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import org.matrix.android.sdk.api.session.call.MxCallDetail
 import org.matrix.android.sdk.api.session.call.MxPeerConnectionState
 import org.matrix.android.sdk.api.session.call.TurnServerResponse
@ -67,7 +67,7 @@ import javax.inject.Inject
@Parcelize
 data class CallArgs(
        val roomId: String,
-        val callId: String?,
+        val callId: String,
        val participantUserId: String,
        val isIncomingCall: Boolean,
        val isVideoCall: Boolean
@ -87,7 +87,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
    private val callViewModel: VectorCallViewModel by viewModel()
    private lateinit var callArgs: CallArgs

-    @Inject lateinit var peerConnectionManager: WebRtcPeerConnectionManager
+    @Inject lateinit var callManager: WebRtcCallManager

    @Inject lateinit var viewModelFactory: VectorCallViewModel.Factory

@ -211,7 +211,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
    }

    override fun onDestroy() {
-        peerConnectionManager.detachRenderers(listOf(pipRenderer, fullscreenRenderer))
+        callManager.detachRenderers(listOf(pipRenderer, fullscreenRenderer))
        if (surfaceRenderersAreInitialized) {
            pipRenderer.release()
            fullscreenRenderer.release()
@ -276,7 +276,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
                    callConnectingProgress.isVisible = true
                }
                // ensure all attached?
-                peerConnectionManager.attachViewRenderers(pipRenderer, fullscreenRenderer, null)
+                callManager.attachViewRenderers(pipRenderer, fullscreenRenderer, null)
            }
            is CallState.Terminated   -> {
                finish()
@ -326,7 +326,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
        pipRenderer.setEnableHardwareScaler(true /* enabled */)
        fullscreenRenderer.setEnableHardwareScaler(true /* enabled */)

-        peerConnectionManager.attachViewRenderers(pipRenderer, fullscreenRenderer,
+        callManager.attachViewRenderers(pipRenderer, fullscreenRenderer,
                intent.getStringExtra(EXTRA_MODE)?.takeIf { isFirstCreation() })

        pipRenderer.setOnClickListener {
@ -382,7 +382,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
        }

        fun newIntent(context: Context,
-                      callId: String?,
+                      callId: String,
                      roomId: String,
                      otherUserId: String,
                      isIncomingCall: Boolean,
--- a/vector/src/main/java/im/vector/app/features/call/VectorCallViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/call/VectorCallViewModel.kt
@ -26,6 +26,8 @@ import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.VectorViewModel
+import im.vector.app.features.call.webrtc.WebRtcCall
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import org.matrix.android.sdk.api.MatrixCallback
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.call.CallState
@ -34,24 +36,41 @@ import org.matrix.android.sdk.api.session.call.MxPeerConnectionState
 import org.matrix.android.sdk.api.session.call.TurnServerResponse
 import org.matrix.android.sdk.api.util.MatrixItem
 import org.matrix.android.sdk.api.util.toMatrixItem
-import org.webrtc.PeerConnection
 import java.util.Timer
 import java.util.TimerTask

 class VectorCallViewModel @AssistedInject constructor(
        @Assisted initialState: VectorCallViewState,
-        @Assisted val args: CallArgs,
        val session: Session,
-        val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
+        val callManager: WebRtcCallManager,
        val proximityManager: CallProximityManager
 ) : VectorViewModel<VectorCallViewState, VectorCallViewActions, VectorCallViewEvents>(initialState) {

-    private var call: MxCall? = null
+    private var call: WebRtcCall? = null

    private var connectionTimeoutTimer: Timer? = null
    private var hasBeenConnectedOnce = false

-    private val callStateListener = object : MxCall.StateListener {
+    private val callListener = object : WebRtcCall.Listener {
+
+        override fun onCaptureStateChanged() {
+            setState {
+                copy(
+                        isVideoCaptureInError = call?.videoCapturerIsInError ?: false,
+                        isHD = call?.currentCaptureFormat() is CaptureFormat.HD
+                )
+            }
+        }
+
+        override fun onCameraChange() {
+            setState {
+                copy(
+                        canSwitchCamera = call?.canSwitchCamera() ?: false,
+                        isFrontCamera = call?.currentCameraType() == CameraType.FRONT
+                )
+            }
+        }
+
        override fun onStateUpdate(call: MxCall) {
            val callState = call.state
            if (callState is CallState.Connected && callState.iceConnectionState == MxPeerConnectionState.CONNECTED) {
@ -87,7 +106,7 @@ class VectorCallViewModel @AssistedInject constructor(
        }
    }

-    private val currentCallListener = object : WebRtcPeerConnectionManager.CurrentCallListener {
+    private val currentCallListener = object : WebRtcCallManager.CurrentCallListener {
        override fun onCurrentCallChange(call: MxCall?) {
            // we need to check the state
            if (call == null) {
@ -96,17 +115,8 @@ class VectorCallViewModel @AssistedInject constructor(
            }
        }

-        override fun onCaptureStateChanged() {
-            setState {
-                copy(
-                        isVideoCaptureInError = webRtcPeerConnectionManager.capturerIsInError,
-                        isHD = webRtcPeerConnectionManager.currentCaptureFormat() is CaptureFormat.HD
-                )
-            }
-        }
-
        override fun onAudioDevicesChange() {
-            val currentSoundDevice = webRtcPeerConnectionManager.callAudioManager.getCurrentSoundDevice()
+            val currentSoundDevice = callManager.callAudioManager.getCurrentSoundDevice()
            if (currentSoundDevice == CallAudioManager.SoundDevice.PHONE) {
                proximityManager.start()
            } else {
@ -115,94 +125,77 @@ class VectorCallViewModel @AssistedInject constructor(

            setState {
                copy(
-                        availableSoundDevices = webRtcPeerConnectionManager.callAudioManager.getAvailableSoundDevices(),
+                        availableSoundDevices = callManager.callAudioManager.getAvailableSoundDevices(),
                        soundDevice = currentSoundDevice
                )
            }
        }

-        override fun onCameraChange() {
+    }
+
+    init {
+        val webRtcCall = callManager.getCallById(initialState.callId)
+        if (webRtcCall == null) {
+            setState {
+                copy(callState = Fail(IllegalArgumentException("No call")))
+            }
+        } else {
+            call = webRtcCall
+            callManager.addCurrentCallListener(currentCallListener)
+            val item: MatrixItem? = session.getUser(webRtcCall.mxCall.opponentUserId)?.toMatrixItem()
+            webRtcCall.addListener(callListener)
+            val currentSoundDevice = callManager.callAudioManager.getCurrentSoundDevice()
+            if (currentSoundDevice == CallAudioManager.SoundDevice.PHONE) {
+                proximityManager.start()
+            }
            setState {
                copy(
-                        canSwitchCamera = webRtcPeerConnectionManager.canSwitchCamera(),
-                        isFrontCamera = webRtcPeerConnectionManager.currentCameraType() == CameraType.FRONT
+                        isVideoCall = webRtcCall.mxCall.isVideoCall,
+                        callState = Success(webRtcCall.mxCall.state),
+                        otherUserMatrixItem = item?.let { Success(it) } ?: Uninitialized,
+                        soundDevice = currentSoundDevice,
+                        availableSoundDevices = callManager.callAudioManager.getAvailableSoundDevices(),
+                        isFrontCamera = callManager.currentCameraType() == CameraType.FRONT,
+                        canSwitchCamera = callManager.canSwitchCamera(),
+                        isHD = webRtcCall.mxCall.isVideoCall && callManager.currentCaptureFormat() is CaptureFormat.HD
                )
            }
        }
    }

-    init {
-        initialState.callId?.let {
-            webRtcPeerConnectionManager.addCurrentCallListener(currentCallListener)
-
-            session.callSignalingService().getCallWithId(it)?.let { mxCall ->
-                this.call = mxCall
-                mxCall.opponentUserId
-                val item: MatrixItem? = session.getUser(mxCall.opponentUserId)?.toMatrixItem()
-
-                mxCall.addListener(callStateListener)
-
-                val currentSoundDevice = webRtcPeerConnectionManager.callAudioManager.getCurrentSoundDevice()
-                if (currentSoundDevice == CallAudioManager.SoundDevice.PHONE) {
-                    proximityManager.start()
-                }
-
-                setState {
-                    copy(
-                            isVideoCall = mxCall.isVideoCall,
-                            callState = Success(mxCall.state),
-                            otherUserMatrixItem = item?.let { Success(it) } ?: Uninitialized,
-                            soundDevice = currentSoundDevice,
-                            availableSoundDevices = webRtcPeerConnectionManager.callAudioManager.getAvailableSoundDevices(),
-                            isFrontCamera = webRtcPeerConnectionManager.currentCameraType() == CameraType.FRONT,
-                            canSwitchCamera = webRtcPeerConnectionManager.canSwitchCamera(),
-                            isHD = mxCall.isVideoCall && webRtcPeerConnectionManager.currentCaptureFormat() is CaptureFormat.HD
-                    )
-                }
-            } ?: run {
-                setState {
-                    copy(
-                            callState = Fail(IllegalArgumentException("No call"))
-                    )
-                }
-            }
-        }
-    }
-
    override fun onCleared() {
-        // session.callService().removeCallListener(callServiceListener)
-        webRtcPeerConnectionManager.removeCurrentCallListener(currentCallListener)
-        this.call?.removeListener(callStateListener)
+        callManager.removeCurrentCallListener(currentCallListener)
+        call?.removeListener(callListener)
        proximityManager.stop()
        super.onCleared()
    }

    override fun handle(action: VectorCallViewActions) = withState { state ->
        when (action) {
-            VectorCallViewActions.EndCall              -> webRtcPeerConnectionManager.endCall()
-            VectorCallViewActions.AcceptCall           -> {
+            VectorCallViewActions.EndCall -> call?.endCall()
+            VectorCallViewActions.AcceptCall -> {
                setState {
                    copy(callState = Loading())
                }
-                webRtcPeerConnectionManager.acceptIncomingCall()
+                call?.acceptIncomingCall()
            }
-            VectorCallViewActions.DeclineCall          -> {
+            VectorCallViewActions.DeclineCall -> {
                setState {
                    copy(callState = Loading())
                }
-                webRtcPeerConnectionManager.endCall()
+                call?.endCall()
            }
-            VectorCallViewActions.ToggleMute           -> {
+            VectorCallViewActions.ToggleMute -> {
                val muted = state.isAudioMuted
-                webRtcPeerConnectionManager.muteCall(!muted)
+                call?.muteCall(!muted)
                setState {
                    copy(isAudioMuted = !muted)
                }
            }
-            VectorCallViewActions.ToggleVideo          -> {
+            VectorCallViewActions.ToggleVideo -> {
                if (state.isVideoCall) {
                    val videoEnabled = state.isVideoEnabled
-                    webRtcPeerConnectionManager.enableVideo(!videoEnabled)
+                    call?.enableVideo(!videoEnabled)
                    setState {
                        copy(isVideoEnabled = !videoEnabled)
                    }
@ -210,14 +203,14 @@ class VectorCallViewModel @AssistedInject constructor(
                Unit
            }
            is VectorCallViewActions.ChangeAudioDevice -> {
-                webRtcPeerConnectionManager.callAudioManager.setCurrentSoundDevice(action.device)
+                callManager.callAudioManager.setCurrentSoundDevice(action.device)
                setState {
                    copy(
-                            soundDevice = webRtcPeerConnectionManager.callAudioManager.getCurrentSoundDevice()
+                            soundDevice = callManager.callAudioManager.getCurrentSoundDevice()
                    )
                }
            }
-            VectorCallViewActions.SwitchSoundDevice    -> {
+            VectorCallViewActions.SwitchSoundDevice -> {
                _viewEvents.post(
                        VectorCallViewEvents.ShowSoundDeviceChooser(state.availableSoundDevices, state.soundDevice)
                )
@ -225,45 +218,35 @@ class VectorCallViewModel @AssistedInject constructor(
            VectorCallViewActions.HeadSetButtonPressed -> {
                if (state.callState.invoke() is CallState.LocalRinging) {
                    // accept call
-                    webRtcPeerConnectionManager.acceptIncomingCall()
+                    call?.acceptIncomingCall()
                }
                if (state.callState.invoke() is CallState.Connected) {
                    // end call?
-                    webRtcPeerConnectionManager.endCall()
+                    call?.endCall()
                }
                Unit
            }
-            VectorCallViewActions.ToggleCamera         -> {
-                webRtcPeerConnectionManager.switchCamera()
+            VectorCallViewActions.ToggleCamera -> {
+                call?.switchCamera()
            }
-            VectorCallViewActions.ToggleHDSD           -> {
+            VectorCallViewActions.ToggleHDSD -> {
                if (!state.isVideoCall) return@withState
-                webRtcPeerConnectionManager.setCaptureFormat(if (state.isHD) CaptureFormat.SD else CaptureFormat.HD)
+                call?.setCaptureFormat(if (state.isHD) CaptureFormat.SD else CaptureFormat.HD)
            }
        }.exhaustive
    }

    @AssistedInject.Factory
    interface Factory {
-        fun create(initialState: VectorCallViewState, args: CallArgs): VectorCallViewModel
+        fun create(initialState: VectorCallViewState): VectorCallViewModel
    }

    companion object : MvRxViewModelFactory<VectorCallViewModel, VectorCallViewState> {

        @JvmStatic
-        override fun create(viewModelContext: ViewModelContext, state: VectorCallViewState): VectorCallViewModel? {
+        override fun create(viewModelContext: ViewModelContext, state: VectorCallViewState): VectorCallViewModel {
            val callActivity: VectorCallActivity = viewModelContext.activity()
-            val callArgs: CallArgs = viewModelContext.args()
-            return callActivity.viewModelFactory.create(state, callArgs)
-        }
-
-        override fun initialState(viewModelContext: ViewModelContext): VectorCallViewState? {
-            val args: CallArgs = viewModelContext.args()
-            return VectorCallViewState(
-                    callId = args.callId,
-                    roomId = args.roomId,
-                    isVideoCall = args.isVideoCall
-            )
+            return callActivity.viewModelFactory.create(state)
        }
    }
 }
--- a/vector/src/main/java/im/vector/app/features/call/VectorCallViewState.kt
+++ b/vector/src/main/java/im/vector/app/features/call/VectorCallViewState.kt
@ -23,8 +23,8 @@ import org.matrix.android.sdk.api.session.call.CallState
 import org.matrix.android.sdk.api.util.MatrixItem

 data class VectorCallViewState(
-        val callId: String? = null,
-        val roomId: String = "",
+        val callId: String,
+        val roomId: String,
        val isVideoCall: Boolean,
        val isAudioMuted: Boolean = false,
        val isVideoEnabled: Boolean = true,
@ -36,4 +36,13 @@ data class VectorCallViewState(
        val availableSoundDevices: List<CallAudioManager.SoundDevice> = emptyList(),
        val otherUserMatrixItem: Async<MatrixItem> = Uninitialized,
        val callState: Async<CallState> = Uninitialized
-) : MvRxState
+) : MvRxState {
+
+    constructor(callArgs: CallArgs): this(
+            callId = callArgs.callId,
+            roomId = callArgs.roomId,
+            isVideoCall = callArgs.isVideoCall
+    )
+
+
+}
--- a/vector/src/main/java/im/vector/app/features/call/service/CallHeadsUpActionReceiver.kt
+++ b/vector/src/main/java/im/vector/app/features/call/service/CallHeadsUpActionReceiver.kt
@ -20,7 +20,7 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import im.vector.app.core.di.HasVectorInjector
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import timber.log.Timber

 class CallHeadsUpActionReceiver : BroadcastReceiver() {
@ -48,9 +48,9 @@ class CallHeadsUpActionReceiver : BroadcastReceiver() {
 //        context.stopService(Intent(context, CallHeadsUpService::class.java))
    }

-    private fun onCallRejectClicked(peerConnectionManager: WebRtcPeerConnectionManager) {
+    private fun onCallRejectClicked(callManager: WebRtcCallManager) {
        Timber.d("onCallRejectClicked")
-        peerConnectionManager.endCall()
+        callManager.endCall()
    }

 //    private fun onCallAnswerClicked(context: Context) {
--- a/vector/src/main/java/im/vector/app/features/call/telecom/CallConnection.kt
+++ b/vector/src/main/java/im/vector/app/features/call/telecom/CallConnection.kt
@ -22,7 +22,7 @@ import android.telecom.Connection
 import android.telecom.DisconnectCause
 import androidx.annotation.RequiresApi
 import im.vector.app.features.call.VectorCallViewModel
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import timber.log.Timber
 import javax.inject.Inject

@ -32,7 +32,7 @@ import javax.inject.Inject
        val callId: String
 ) : Connection() {

-    @Inject lateinit var peerConnectionManager: WebRtcPeerConnectionManager
+    @Inject lateinit var callManager: WebRtcCallManager
    @Inject lateinit var callViewModel: VectorCallViewModel

    init {
--- a/vector/src/main/java/im/vector/app/features/call/webrtc/PeerConnectionObserver.kt
+++ b/vector/src/main/java/im/vector/app/features/call/webrtc/PeerConnectionObserver.kt
@ -17,7 +17,6 @@
 package im.vector.app.features.call.webrtc

 import im.vector.app.features.call.CallAudioManager
-import kotlinx.coroutines.GlobalScope
 import org.matrix.android.sdk.api.session.call.CallState
 import org.matrix.android.sdk.api.session.call.MxPeerConnectionState
 import org.webrtc.DataChannel
@ -84,7 +83,7 @@ class PeerConnectionObserver(private val webRtcCall: WebRtcCall,

    override fun onIceCandidate(iceCandidate: IceCandidate) {
        Timber.v("## VOIP StreamObserver onIceCandidate: $iceCandidate")
-        webRtcCall.iceCandidateSource.onNext(iceCandidate)
+        webRtcCall.onIceCandidate(iceCandidate)
    }

    override fun onDataChannel(dc: DataChannel) {
@ -153,7 +152,6 @@ class PeerConnectionObserver(private val webRtcCall: WebRtcCall,
    override fun onAddStream(stream: MediaStream) {
        Timber.v("## VOIP StreamObserver onAddStream: $stream")
        webRtcCall.onAddStream(stream)
-
    }

    override fun onRemoveStream(stream: MediaStream) {
@ -175,11 +173,7 @@ class PeerConnectionObserver(private val webRtcCall: WebRtcCall,

    override fun onRenegotiationNeeded() {
        Timber.v("## VOIP StreamObserver onRenegotiationNeeded")
-        if (webRtcCall.mxCall.state != CallState.CreateOffer && webRtcCall.mxCall.opponentVersion == 0) {
-            Timber.v("Opponent does not support renegotiation: ignoring onRenegotiationNeeded event")
-            return
-        }
-        webRtcCall.sendSpdOffer()
+        webRtcCall.onRenegationNeeded()
    }

    /**
--- a/vector/src/main/java/im/vector/app/features/call/webrtc/WebRtcCall.kt
+++ b/vector/src/main/java/im/vector/app/features/call/webrtc/WebRtcCall.kt
@ -37,7 +37,6 @@ import io.reactivex.subjects.PublishSubject
 import io.reactivex.subjects.ReplaySubject
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.asCoroutineDispatcher
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@ -49,6 +48,7 @@ import org.matrix.android.sdk.api.session.call.MxCall
 import org.matrix.android.sdk.api.session.call.TurnServerResponse
 import org.matrix.android.sdk.api.session.room.model.call.CallAnswerContent
 import org.matrix.android.sdk.api.session.room.model.call.CallCandidatesContent
+import org.matrix.android.sdk.api.session.room.model.call.CallHangupContent
 import org.matrix.android.sdk.api.session.room.model.call.CallInviteContent
 import org.matrix.android.sdk.api.session.room.model.call.CallNegotiateContent
 import org.matrix.android.sdk.api.session.room.model.call.SdpType
@ -72,9 +72,9 @@ import org.webrtc.VideoSource
 import org.webrtc.VideoTrack
 import timber.log.Timber
 import java.lang.ref.WeakReference
-import java.util.concurrent.Executor
 import java.util.concurrent.TimeUnit
 import javax.inject.Provider
+import kotlin.coroutines.CoroutineContext

 private const val STREAM_ID = "ARDAMS"
 private const val AUDIO_TRACK_ID = "ARDAMSa0"
@ -85,29 +85,44 @@ class WebRtcCall(val mxCall: MxCall,
                 private val callAudioManager: CallAudioManager,
                 private val rootEglBase: EglBase?,
                 private val context: Context,
-                 private val session: Session,
-                 private val executor: Executor,
-                 private val peerConnectionFactoryProvider: Provider<PeerConnectionFactory?>) {
+                 private val dispatcher: CoroutineContext,
+                 private val sessionProvider: Provider<Session?>,
+                 private val peerConnectionFactoryProvider: Provider<PeerConnectionFactory?>,
+                 private val onCallEnded: (WebRtcCall) -> Unit): MxCall.StateListener {

-    private val dispatcher = executor.asCoroutineDispatcher()
+    interface Listener: MxCall.StateListener {
+        fun onCaptureStateChanged() {}
+        fun onCameraChange() {}
+    }

-    var peerConnection: PeerConnection? = null
-    var localAudioSource: AudioSource? = null
-    var localAudioTrack: AudioTrack? = null
-    var localVideoSource: VideoSource? = null
-    var localVideoTrack: VideoTrack? = null
-    var remoteVideoTrack: VideoTrack? = null
+    private val listeners = ArrayList<Listener>()
+
+    fun addListener(listener: Listener) {
+        listeners.add(listener)
+    }
+
+    fun removeListener(listener: Listener) {
+        listeners.remove(listener)
+    }
+
+    val callId = mxCall.callId
+
+    private var peerConnection: PeerConnection? = null
+    private var localAudioSource: AudioSource? = null
+    private var localAudioTrack: AudioTrack? = null
+    private var localVideoSource: VideoSource? = null
+    private var localVideoTrack: VideoTrack? = null
+    private var remoteVideoTrack: VideoTrack? = null

    // Perfect negotiation state: https://www.w3.org/TR/webrtc/#perfect-negotiation-example
-    var makingOffer: Boolean = false
-    var ignoreOffer: Boolean = false
+    private var makingOffer: Boolean = false
+    private var ignoreOffer: Boolean = false

    private var videoCapturer: CameraVideoCapturer? = null

    private val availableCamera = ArrayList<CameraProxy>()
    private var cameraInUse: CameraProxy? = null
    private var currentCaptureFormat: CaptureFormat = CaptureFormat.HD
-    private var capturerIsInError = false
    private var cameraAvailabilityCallback: CameraManager.AvailabilityCallback? = null

    // Mute status
@ -117,10 +132,17 @@ class WebRtcCall(val mxCall: MxCall,

    var offerSdp: CallInviteContent.Offer? = null

+    var videoCapturerIsInError = false
+        set(value) {
+            field = value
+            listeners.forEach {
+                tryOrNull { it.onCaptureStateChanged() }
+            }
+        }
    private var localSurfaceRenderers: MutableList<WeakReference<SurfaceViewRenderer>> = ArrayList()
    private var remoteSurfaceRenderers: MutableList<WeakReference<SurfaceViewRenderer>> = ArrayList()

-    val iceCandidateSource: PublishSubject<IceCandidate> = PublishSubject.create()
+    private val iceCandidateSource: PublishSubject<IceCandidate> = PublishSubject.create()
    private val iceCandidateDisposable = iceCandidateSource
            .buffer(300, TimeUnit.MILLISECONDS)
            .subscribe {
@ -132,60 +154,51 @@ class WebRtcCall(val mxCall: MxCall,
                }
            }

-    var remoteCandidateSource: ReplaySubject<IceCandidate> = ReplaySubject.create()
-    var remoteIceCandidateDisposable: Disposable? = null
+    private val remoteCandidateSource: ReplaySubject<IceCandidate> = ReplaySubject.create()
+    private var remoteIceCandidateDisposable: Disposable? = null

-    private fun createLocalStream() {
-        val peerConnectionFactory = peerConnectionFactoryProvider.get() ?: return
-        Timber.v("Create local stream for call ${mxCall.callId}")
-        configureAudioTrack(peerConnectionFactory)
-        // add video track if needed
-        if (mxCall.isVideoCall) {
-            configureVideoTrack(peerConnectionFactory)
-        }
-        updateMuteStatus()
+    init {
+        mxCall.addListener(this)
    }

-    private fun configureAudioTrack(peerConnectionFactory: PeerConnectionFactory) {
-        val audioSource = peerConnectionFactory.createAudioSource(DEFAULT_AUDIO_CONSTRAINTS)
-        val audioTrack = peerConnectionFactory.createAudioTrack(AUDIO_TRACK_ID, audioSource)
-        audioTrack.setEnabled(true)
-        Timber.v("Add audio track $AUDIO_TRACK_ID to call ${mxCall.callId}")
-        peerConnection?.addTrack(audioTrack, listOf(STREAM_ID))
-        localAudioSource = audioSource
-        localAudioTrack = audioTrack
-    }
+    fun onIceCandidate(iceCandidate: IceCandidate) = iceCandidateSource.onNext(iceCandidate)

-    fun sendSpdOffer() = GlobalScope.launch(dispatcher) {
-        val constraints = MediaConstraints()
-        // These are deprecated options
+    fun onRenegationNeeded() {
+        GlobalScope.launch(dispatcher) {
+            if (mxCall.state != CallState.CreateOffer && mxCall.opponentVersion == 0) {
+                Timber.v("Opponent does not support renegotiation: ignoring onRenegotiationNeeded event")
+                return@launch
+            }
+            val constraints = MediaConstraints()
+            // These are deprecated options
 //        constraints.mandatory.add(MediaConstraints.KeyValuePair("OfferToReceiveAudio", "true"))
 //        constraints.mandatory.add(MediaConstraints.KeyValuePair("OfferToReceiveVideo", if (currentCall?.mxCall?.isVideoCall == true) "true" else "false"))

-        val peerConnection = peerConnection ?: return@launch
-        Timber.v("## VOIP creating offer...")
-        makingOffer = true
-        try {
-            val sessionDescription = peerConnection.awaitCreateOffer(constraints) ?: return@launch
-            peerConnection.awaitSetLocalDescription(sessionDescription)
-            if (peerConnection.iceGatheringState() == PeerConnection.IceGatheringState.GATHERING) {
-                // Allow a short time for initial candidates to be gathered
-                delay(200)
+            val peerConnection = peerConnection ?: return@launch
+            Timber.v("## VOIP creating offer...")
+            makingOffer = true
+            try {
+                val sessionDescription = peerConnection.awaitCreateOffer(constraints) ?: return@launch
+                peerConnection.awaitSetLocalDescription(sessionDescription)
+                if (peerConnection.iceGatheringState() == PeerConnection.IceGatheringState.GATHERING) {
+                    // Allow a short time for initial candidates to be gathered
+                    delay(200)
+                }
+                if (mxCall.state == CallState.Terminated) {
+                    return@launch
+                }
+                if (mxCall.state == CallState.CreateOffer) {
+                    // send offer to peer
+                    mxCall.offerSdp(sessionDescription.description)
+                } else {
+                    mxCall.negotiate(sessionDescription.description)
+                }
+            } catch (failure: Throwable) {
+                // Need to handle error properly.
+                Timber.v("Failure while creating offer")
+            } finally {
+                makingOffer = false
            }
-            if (mxCall.state == CallState.Terminated) {
-                return@launch
-            }
-            if (mxCall.state == CallState.CreateOffer) {
-                // send offer to peer
-                mxCall.offerSdp(sessionDescription.description)
-            } else {
-                mxCall.negotiate(sessionDescription.description)
-            }
-        } catch (failure: Throwable) {
-            // Need to handle error properly.
-            Timber.v("Failure while creating offer")
-        } finally {
-            makingOffer = false
        }
    }

@ -223,7 +236,8 @@ class WebRtcCall(val mxCall: MxCall,
        mxCall
                .takeIf { it.state is CallState.Connected }
                ?.let { mxCall ->
-                    val name = session.getUser(mxCall.opponentUserId)?.getBestName()
+                    val session = sessionProvider.get()
+                    val name = session?.getUser(mxCall.opponentUserId)?.getBestName()
                            ?: mxCall.roomId
                    // Start background service with notification
                    CallService.onPendingCall(
@ -231,7 +245,7 @@ class WebRtcCall(val mxCall: MxCall,
                            isVideo = mxCall.isVideoCall,
                            roomName = name,
                            roomId = mxCall.roomId,
-                            matrixId = session.myUserId,
+                            matrixId = session?.myUserId ?:"",
                            callId = mxCall.callId)
                }

@ -255,9 +269,12 @@ class WebRtcCall(val mxCall: MxCall,
        }
    }

-    fun acceptIncomingCall() = GlobalScope.launch {
-        if (mxCall.state == CallState.LocalRinging) {
-            internalAcceptIncomingCall()
+    fun acceptIncomingCall() {
+        GlobalScope.launch {
+            Timber.v("## VOIP acceptIncomingCall from state ${mxCall.state}")
+            if (mxCall.state == CallState.LocalRinging) {
+                internalAcceptIncomingCall()
+            }
        }
    }

@ -289,14 +306,15 @@ class WebRtcCall(val mxCall: MxCall,
                    .takeIf { it.state is CallState.Connected }
                    ?.let { mxCall ->
                        // Start background service with notification
-                        val name = session.getUser(mxCall.opponentUserId)?.getBestName()
+                        val session = sessionProvider.get()
+                        val name = session?.getUser(mxCall.opponentUserId)?.getBestName()
                                ?: mxCall.opponentUserId
                        CallService.onOnGoingCallBackground(
                                context = context,
                                isVideo = mxCall.isVideoCall,
                                roomName = name,
                                roomId = mxCall.roomId,
-                                matrixId = session.myUserId ,
+                                matrixId = session?.myUserId ?: "",
                                callId = mxCall.callId
                        )
                    }
@ -325,14 +343,15 @@ class WebRtcCall(val mxCall: MxCall,
        val turnServerResponse = getTurnServer()
        // Update service state
        withContext(Dispatchers.Main) {
-            val name = session.getUser(mxCall.opponentUserId)?.getBestName()
+            val session = sessionProvider.get()
+            val name = session?.getUser(mxCall.opponentUserId)?.getBestName()
                    ?: mxCall.roomId
            CallService.onPendingCall(
                    context = context,
                    isVideo = mxCall.isVideoCall,
                    roomName = name,
                    roomId = mxCall.roomId,
-                    matrixId = session.myUserId,
+                    matrixId = session?.myUserId ?: "",
                    callId = mxCall.callId
            )
        }
@ -393,13 +412,33 @@ class WebRtcCall(val mxCall: MxCall,
    private suspend fun getTurnServer(): TurnServerResponse? {
        return tryOrNull {
            awaitCallback {
-                session.callSignalingService().getTurnServer(it)
+                sessionProvider.get()?.callSignalingService()?.getTurnServer(it)
            }
        }
    }

+    private fun createLocalStream() {
+        val peerConnectionFactory = peerConnectionFactoryProvider.get() ?: return
+        Timber.v("Create local stream for call ${mxCall.callId}")
+        configureAudioTrack(peerConnectionFactory)
+        // add video track if needed
+        if (mxCall.isVideoCall) {
+            configureVideoTrack(peerConnectionFactory)
+        }
+        updateMuteStatus()
+    }
+
+    private fun configureAudioTrack(peerConnectionFactory: PeerConnectionFactory) {
+        val audioSource = peerConnectionFactory.createAudioSource(DEFAULT_AUDIO_CONSTRAINTS)
+        val audioTrack = peerConnectionFactory.createAudioTrack(AUDIO_TRACK_ID, audioSource)
+        audioTrack.setEnabled(true)
+        Timber.v("Add audio track $AUDIO_TRACK_ID to call ${mxCall.callId}")
+        peerConnection?.addTrack(audioTrack, listOf(STREAM_ID))
+        localAudioSource = audioSource
+        localAudioTrack = audioTrack
+    }
+
    private fun configureVideoTrack(peerConnectionFactory: PeerConnectionFactory) {
-        availableCamera.clear()
        val cameraIterator = if (Camera2Enumerator.isSupported(context)) {
            Camera2Enumerator(context)
        } else {
@ -426,14 +465,14 @@ class WebRtcCall(val mxCall: MxCall,
            val videoCapturer = cameraIterator.createCapturer(camera.name, object : CameraEventsHandlerAdapter() {
                override fun onFirstFrameAvailable() {
                    super.onFirstFrameAvailable()
-                    capturerIsInError = false
+                    videoCapturerIsInError = false
                }

                override fun onCameraClosed() {
                    super.onCameraClosed()
                    // This could happen if you open the camera app in chat
                    // We then register in order to restart capture as soon as the camera is available again
-                    capturerIsInError = true
+                    videoCapturerIsInError = true
                    val cameraManager = context.getSystemService<CameraManager>()
                    cameraAvailabilityCallback = object : CameraManager.AvailabilityCallback() {
                        override fun onCameraAvailable(cameraId: String) {
@ -466,12 +505,10 @@ class WebRtcCall(val mxCall: MxCall,
    }

    fun setCaptureFormat(format: CaptureFormat) {
-        Timber.v("## VOIP setCaptureFormat $format")
-        executor.execute {
-            // videoCapturer?.stopCapture()
+        GlobalScope.launch(dispatcher) {
+            Timber.v("## VOIP setCaptureFormat $format")
            videoCapturer?.changeCaptureFormat(format.width, format.height, format.fps)
            currentCaptureFormat = format
-            //currentCallsListeners.forEach { tryOrNull { it.onCaptureStateChanged() } }
        }
    }

@ -543,6 +580,10 @@ class WebRtcCall(val mxCall: MxCall,
                    localSurfaceRenderers.forEach {
                        it.get()?.setMirror(isFrontCamera)
                    }
+                    listeners.forEach {
+                        tryOrNull { it.onCameraChange() }
+                    }
+
                }

                override fun onCameraSwitchError(errorDescription: String?) {
@ -577,7 +618,8 @@ class WebRtcCall(val mxCall: MxCall,
        return currentCaptureFormat
    }

-    fun release() {
+    private fun release() {
+        mxCall.removeListener(this)
        videoCapturer?.stopCapture()
        videoCapturer?.dispose()
        videoCapturer = null
@ -591,21 +633,22 @@ class WebRtcCall(val mxCall: MxCall,
        localAudioTrack = null
        localVideoSource = null
        localVideoTrack = null
+        cameraAvailabilityCallback = null
    }

    fun onAddStream(stream: MediaStream) {
-        executor.execute {
+        GlobalScope.launch(dispatcher) {
            // reportError("Weird-looking stream: " + stream);
            if (stream.audioTracks.size > 1 || stream.videoTracks.size > 1) {
                Timber.e("## VOIP StreamObserver weird looking stream: $stream")
                // TODO maybe do something more??
                mxCall.hangUp()
-                return@execute
+                return@launch
            }
            if (stream.videoTracks.size == 1) {
                val remoteVideoTrack = stream.videoTracks.first()
                remoteVideoTrack.setEnabled(true)
-                this.remoteVideoTrack = remoteVideoTrack
+                this@WebRtcCall.remoteVideoTrack = remoteVideoTrack
                // sink to renderer if attached
                remoteSurfaceRenderers.forEach { it.get()?.let { remoteVideoTrack.addSink(it) } }
            }
@ -613,7 +656,7 @@ class WebRtcCall(val mxCall: MxCall,
    }

    fun onRemoveStream() {
-        executor.execute {
+        GlobalScope.launch(dispatcher) {
            remoteSurfaceRenderers
                    .mapNotNull { it.get() }
                    .forEach { remoteVideoTrack?.removeSink(it) }
@ -621,26 +664,31 @@ class WebRtcCall(val mxCall: MxCall,
        }
    }

-    fun endCall(originatedByMe: Boolean) {
+    fun endCall(originatedByMe: Boolean = true, reason: CallHangupContent.Reason? = null) {
        mxCall.state = CallState.Terminated
+        //Close tracks ASAP
        localVideoTrack?.setEnabled(false)
        localVideoTrack?.setEnabled(false)
-
        cameraAvailabilityCallback?.let { cameraAvailabilityCallback ->
            val cameraManager = context.getSystemService<CameraManager>()!!
            cameraManager.unregisterAvailabilityCallback(cameraAvailabilityCallback)
        }
        release()
+        onCallEnded(this)
        if (originatedByMe) {
            // send hang up event
-            mxCall.hangUp()
+            if (mxCall.state is CallState.Connected) {
+                mxCall.hangUp(reason)
+            } else {
+                mxCall.reject()
+            }
        }
    }

    // Call listener

    fun onCallIceCandidateReceived(iceCandidatesContent: CallCandidatesContent) {
-        executor.execute {
+        GlobalScope.launch(dispatcher) {
            iceCandidatesContent.candidates.forEach {
                Timber.v("## VOIP onCallIceCandidateReceived for call ${mxCall.callId} sdp: ${it.candidate}")
                val iceCandidate = IceCandidate(it.sdpMid, it.sdpMLineIndex, it.candidate)
@ -665,43 +713,49 @@ class WebRtcCall(val mxCall: MxCall,
    }

    fun onCallNegotiateReceived(callNegotiateContent: CallNegotiateContent) {
-        val description = callNegotiateContent.description
-        val type = description?.type
-        val sdpText = description?.sdp
-        if (type == null || sdpText == null) {
-            Timber.i("Ignoring invalid m.call.negotiate event");
-            return;
-        }
-        val peerConnection = peerConnection ?: return
-        // Politeness always follows the direction of the call: in a glare situation,
-        // we pick either the inbound or outbound call, so one side will always be
-        // inbound and one outbound
-        val polite = !mxCall.isOutgoing
-        // Here we follow the perfect negotiation logic from
-        // https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/Perfect_negotiation
-        val offerCollision = description.type == SdpType.OFFER
-                && (makingOffer || peerConnection.signalingState() != PeerConnection.SignalingState.STABLE)
-
-        ignoreOffer = !polite && offerCollision
-        if (ignoreOffer) {
-            Timber.i("Ignoring colliding negotiate event because we're impolite")
-            return
-        }
-
        GlobalScope.launch(dispatcher) {
+            val description = callNegotiateContent.description
+            val type = description?.type
+            val sdpText = description?.sdp
+            if (type == null || sdpText == null) {
+                Timber.i("Ignoring invalid m.call.negotiate event");
+                return@launch
+            }
+            val peerConnection = peerConnection ?: return@launch
+            // Politeness always follows the direction of the call: in a glare situation,
+            // we pick either the inbound or outbound call, so one side will always be
+            // inbound and one outbound
+            val polite = !mxCall.isOutgoing
+            // Here we follow the perfect negotiation logic from
+            // https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/Perfect_negotiation
+            val offerCollision = description.type == SdpType.OFFER
+                    && (makingOffer || peerConnection.signalingState() != PeerConnection.SignalingState.STABLE)
+
+            ignoreOffer = !polite && offerCollision
+            if (ignoreOffer) {
+                Timber.i("Ignoring colliding negotiate event because we're impolite")
+                return@launch
+            }
            try {
                val sdp = SessionDescription(type.asWebRTC(), sdpText)
                peerConnection.awaitSetRemoteDescription(sdp)
                if (type == SdpType.OFFER) {
-                    createAnswer()?.also {
-                        mxCall.negotiate(sdpText)
-                    }
+                    createAnswer()
+                    mxCall.negotiate(sdpText)
                }
            } catch (failure: Throwable) {
                Timber.e(failure, "Failed to complete negotiation")
            }
        }
    }
+
+    // MxCall.StateListener
+
+    override fun onStateUpdate(call: MxCall) {
+        listeners.forEach {
+            tryOrNull { it.onStateUpdate(call) }
+        }
+    }
 }

 private fun MutableList<WeakReference<SurfaceViewRenderer>>.addIfNeeded(renderer: SurfaceViewRenderer?) {
--- a/vector/src/main/java/im/vector/app/features/call/webrtc/WebRtcPeerConnectionManager.kt
+++ b/vector/src/main/java/im/vector/app/features/call/webrtc/WebRtcPeerConnectionManager.kt
@ -29,8 +29,6 @@ import im.vector.app.features.call.CameraType
 import im.vector.app.features.call.CaptureFormat
 import im.vector.app.features.call.VectorCallActivity
 import im.vector.app.features.call.utils.EglUtils
-import im.vector.app.features.call.utils.awaitCreateAnswer
-import im.vector.app.features.call.utils.awaitSetLocalDescription
 import im.vector.app.push.fcm.FcmHelper
 import kotlinx.coroutines.asCoroutineDispatcher
 import org.matrix.android.sdk.api.extensions.orFalse
@ -39,7 +37,6 @@ import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.call.CallListener
 import org.matrix.android.sdk.api.session.call.CallState
 import org.matrix.android.sdk.api.session.call.MxCall
-import org.matrix.android.sdk.api.session.call.TurnServerResponse
 import org.matrix.android.sdk.api.session.room.model.call.CallAnswerContent
 import org.matrix.android.sdk.api.session.room.model.call.CallCandidatesContent
 import org.matrix.android.sdk.api.session.room.model.call.CallHangupContent
@ -47,18 +44,13 @@ import org.matrix.android.sdk.api.session.room.model.call.CallInviteContent
 import org.matrix.android.sdk.api.session.room.model.call.CallNegotiateContent
 import org.matrix.android.sdk.api.session.room.model.call.CallRejectContent
 import org.matrix.android.sdk.api.session.room.model.call.CallSelectAnswerContent
-import org.matrix.android.sdk.internal.util.awaitCallback
 import org.webrtc.DefaultVideoDecoderFactory
 import org.webrtc.DefaultVideoEncoderFactory
-import org.webrtc.MediaConstraints
 import org.webrtc.PeerConnectionFactory
-import org.webrtc.SessionDescription
 import org.webrtc.SurfaceViewRenderer
 import timber.log.Timber
-import java.lang.ref.WeakReference
 import java.util.concurrent.Executors
 import javax.inject.Inject
-import javax.inject.Provider
 import javax.inject.Singleton

 /**
@ -66,7 +58,7 @@ import javax.inject.Singleton
 * Use app context
 */
@Singleton
-class WebRtcPeerConnectionManager @Inject constructor(
+class WebRtcCallManager @Inject constructor(
        private val context: Context,
        private val activeSessionDataSource: ActiveSessionDataSource
 ) : CallListener, LifecycleObserver {
@ -81,6 +73,14 @@ class WebRtcPeerConnectionManager @Inject constructor(
        fun onCameraChange() {}
    }

+    var capturerIsInError = false
+        set(value) {
+            field = value
+            currentCallsListeners.forEach {
+                tryOrNull { it.onCaptureStateChanged() }
+            }
+        }
+
    private val currentCallsListeners = emptyList<CurrentCallListener>().toMutableList()
    fun addCurrentCallListener(listener: CurrentCallListener) {
        currentCallsListeners.add(listener)
@ -90,7 +90,7 @@ class WebRtcPeerConnectionManager @Inject constructor(
        currentCallsListeners.remove(listener)
    }

-    val callAudioManager = CallAudioManager(context.applicationContext) {
+    val callAudioManager = CallAudioManager(context) {
        currentCallsListeners.forEach {
            tryOrNull { it.onAudioDevicesChange() }
        }
@ -104,34 +104,6 @@ class WebRtcPeerConnectionManager @Inject constructor(

    private var isInBackground: Boolean = true

-    var capturerIsInError = false
-        set(value) {
-            field = value
-            currentCallsListeners.forEach {
-                tryOrNull { it.onCaptureStateChanged() }
-            }
-        }
-
-    var localSurfaceRenderers: MutableList<WeakReference<SurfaceViewRenderer>> = ArrayList()
-    var remoteSurfaceRenderers: MutableList<WeakReference<SurfaceViewRenderer>> = ArrayList()
-
-    private fun MutableList<WeakReference<SurfaceViewRenderer>>.addIfNeeded(renderer: SurfaceViewRenderer?) {
-        if (renderer == null) return
-        val exists = any {
-            it.get() == renderer
-        }
-        if (!exists) {
-            add(WeakReference(renderer))
-        }
-    }
-
-    private fun MutableList<WeakReference<SurfaceViewRenderer>>.removeIfNeeded(renderer: SurfaceViewRenderer?) {
-        if (renderer == null) return
-        removeAll {
-            it.get() == renderer
-        }
-    }
-
    @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
    fun entersForeground() {
        isInBackground = false
@ -150,6 +122,12 @@ class WebRtcPeerConnectionManager @Inject constructor(
            }
        }

+    private val callsByCallId = HashMap<String, WebRtcCall>()
+
+    fun getCallById(callId: String): WebRtcCall? {
+        return callsByCallId[callId]
+    }
+
    fun headSetButtonTapped() {
        Timber.v("## VOIP headSetButtonTapped")
        val call = currentCall?.mxCall ?: return
@ -163,19 +141,11 @@ class WebRtcPeerConnectionManager @Inject constructor(
        }
    }

-    private suspend fun getTurnServer(): TurnServerResponse? {
-        return tryOrNull {
-            awaitCallback {
-                currentSession?.callSignalingService()?.getTurnServer(it)
-            }
-        }
-    }
-
    fun attachViewRenderers(localViewRenderer: SurfaceViewRenderer?, remoteViewRenderer: SurfaceViewRenderer, mode: String?) {
        currentCall?.attachViewRenderers(localViewRenderer, remoteViewRenderer, mode)
    }

-    private fun createPeerConnectionFactory() {
+    private fun createPeerConnectionFactoryIfNeeded() {
        if (peerConnectionFactory != null) return
        Timber.v("## VOIP createPeerConnectionFactory")
        val eglBaseContext = rootEglBase?.eglBaseContext ?: return Unit.also {
@ -202,12 +172,9 @@ class WebRtcPeerConnectionManager @Inject constructor(
                .setVideoEncoderFactory(defaultVideoEncoderFactory)
                .setVideoDecoderFactory(defaultVideoDecoderFactory)
                .createPeerConnectionFactory()
-
-        // attachViewRenderersInternal()
    }

    fun acceptIncomingCall() {
-        Timber.v("## VOIP acceptIncomingCall from state ${currentCall?.mxCall?.state}")
        currentCall?.acceptIncomingCall()
    }

@ -215,11 +182,12 @@ class WebRtcPeerConnectionManager @Inject constructor(
        currentCall?.detachRenderers(renderers)
    }

-    fun close() {
-        Timber.v("## VOIP WebRtcPeerConnectionManager close() >")
+    private fun onCallEnded(call: WebRtcCall) {
+        Timber.v("## VOIP WebRtcPeerConnectionManager onCall ended: ${call.mxCall.callId}")
        CallService.onNoActiveCall(context)
        callAudioManager.stop()
        currentCall = null
+        callsByCallId.remove(call.mxCall.callId)
        // This must be done in this thread
        executor.execute {
            if (currentCall == null) {
@ -231,68 +199,28 @@ class WebRtcPeerConnectionManager @Inject constructor(
        }
    }

-    companion object {
-
-        private const val STREAM_ID = "ARDAMS"
-        private const val AUDIO_TRACK_ID = "ARDAMSa0"
-        private const val VIDEO_TRACK_ID = "ARDAMSv0"
-
-        private val DEFAULT_AUDIO_CONSTRAINTS = MediaConstraints().apply {
-            // add all existing audio filters to avoid having echos
-//            mandatory.add(MediaConstraints.KeyValuePair("googEchoCancellation", "true"))
-//            mandatory.add(MediaConstraints.KeyValuePair("googEchoCancellation2", "true"))
-//            mandatory.add(MediaConstraints.KeyValuePair("googDAEchoCancellation", "true"))
-//
-//            mandatory.add(MediaConstraints.KeyValuePair("googTypingNoiseDetection", "true"))
-//
-//            mandatory.add(MediaConstraints.KeyValuePair("googAutoGainControl", "true"))
-//            mandatory.add(MediaConstraints.KeyValuePair("googAutoGainControl2", "true"))
-//
-//            mandatory.add(MediaConstraints.KeyValuePair("googNoiseSuppression", "true"))
-//            mandatory.add(MediaConstraints.KeyValuePair("googNoiseSuppression2", "true"))
-//
-//            mandatory.add(MediaConstraints.KeyValuePair("googAudioMirroring", "false"))
-//            mandatory.add(MediaConstraints.KeyValuePair("googHighpassFilter", "true"))
-        }
-    }
-
    fun startOutgoingCall(signalingRoomId: String, otherUserId: String, isVideoCall: Boolean) {
        Timber.v("## VOIP startOutgoingCall in room $signalingRoomId to $otherUserId isVideo $isVideoCall")
        executor.execute {
-            if (peerConnectionFactory == null) {
-                createPeerConnectionFactory()
-            }
+            createPeerConnectionFactoryIfNeeded()
        }

-        val createdCall = currentSession?.callSignalingService()?.createOutgoingCall(signalingRoomId, otherUserId, isVideoCall) ?: return
-        val webRtcCall = WebRtcCall(
-                mxCall = createdCall,
-                callAudioManager = callAudioManager,
-                rootEglBase = rootEglBase,
-                context = context,
-                executor = executor,
-                peerConnectionFactoryProvider = Provider {
-                    createPeerConnectionFactory()
-                    peerConnectionFactory
-                },
-                session = currentSession!!
-        )
+        val mxCall = currentSession?.callSignalingService()?.createOutgoingCall(signalingRoomId, otherUserId, isVideoCall) ?: return
+        createWebRtcCall(mxCall)
+        callAudioManager.startForCall(mxCall)

-        callAudioManager.startForCall(createdCall)
-        currentCall = webRtcCall
-
-        val name = currentSession?.getUser(createdCall.opponentUserId)?.getBestName()
-                ?: createdCall.opponentUserId
+        val name = currentSession?.getUser(mxCall.opponentUserId)?.getBestName()
+                ?: mxCall.opponentUserId
        CallService.onOutgoingCallRinging(
                context = context.applicationContext,
-                isVideo = createdCall.isVideoCall,
+                isVideo = mxCall.isVideoCall,
                roomName = name,
-                roomId = createdCall.roomId,
+                roomId = mxCall.roomId,
                matrixId = currentSession?.myUserId ?: "",
-                callId = createdCall.callId)
+                callId = mxCall.callId)

        // start the activity now
-        context.applicationContext.startActivity(VectorCallActivity.newIntent(context, createdCall))
+        context.startActivity(VectorCallActivity.newIntent(context, mxCall))
    }

    override fun onCallIceCandidateReceived(mxCall: MxCall, iceCandidatesContent: CallCandidatesContent) {
@ -311,19 +239,9 @@ class WebRtcPeerConnectionManager @Inject constructor(
            // Just ignore, maybe we could answer from other session?
            return
        }
-        val webRtcCall = WebRtcCall(
-                mxCall = mxCall,
-                callAudioManager = callAudioManager,
-                rootEglBase = rootEglBase,
-                context = context,
-                executor = executor,
-                peerConnectionFactoryProvider = {
-                    createPeerConnectionFactory()
-                    peerConnectionFactory
-                },
-                session = currentSession!!
-        )
-        currentCall = webRtcCall
+        createWebRtcCall(mxCall).apply {
+            offerSdp = callInviteContent.offer
+        }
        callAudioManager.startForCall(mxCall)
        // Start background service with notification
        val name = currentSession?.getUser(mxCall.opponentUserId)?.getBestName()
@ -336,8 +254,6 @@ class WebRtcPeerConnectionManager @Inject constructor(
                matrixId = currentSession?.myUserId ?: "",
                callId = mxCall.callId
        )
-        webRtcCall.offerSdp = callInviteContent.offer
-
        // If this is received while in background, the app will not sync,
        // and thus won't be able to received events. For example if the call is
        // accepted on an other session this device will continue ringing
@ -351,21 +267,23 @@ class WebRtcPeerConnectionManager @Inject constructor(
        }
    }

-    private suspend fun createAnswer(call: WebRtcCall): SessionDescription? {
-        Timber.w("## VOIP createAnswer")
-        val peerConnection = call.peerConnection ?: return null
-        val constraints = MediaConstraints().apply {
-            mandatory.add(MediaConstraints.KeyValuePair("OfferToReceiveAudio", "true"))
-            mandatory.add(MediaConstraints.KeyValuePair("OfferToReceiveVideo", if (call.mxCall.isVideoCall) "true" else "false"))
-        }
-        return try {
-            val localDescription = peerConnection.awaitCreateAnswer(constraints) ?: return null
-            peerConnection.awaitSetLocalDescription(localDescription)
-            localDescription
-        } catch (failure: Throwable) {
-            Timber.v("Fail to create answer")
-            null
-        }
+    private fun createWebRtcCall(mxCall: MxCall): WebRtcCall {
+        val webRtcCall = WebRtcCall(
+                mxCall = mxCall,
+                callAudioManager = callAudioManager,
+                rootEglBase = rootEglBase,
+                context = context,
+                dispatcher = dispatcher,
+                peerConnectionFactoryProvider = {
+                    createPeerConnectionFactoryIfNeeded()
+                    peerConnectionFactory
+                },
+                sessionProvider = { currentSession },
+                onCallEnded = this::onCallEnded
+        )
+        currentCall = webRtcCall
+        callsByCallId[mxCall.callId] = webRtcCall
+        return webRtcCall
    }

    fun muteCall(muted: Boolean) {
@ -397,11 +315,7 @@ class WebRtcPeerConnectionManager @Inject constructor(
    }

    fun endCall(originatedByMe: Boolean = true) {
-        // Update service state
-        CallService.onNoActiveCall(context)
-        // close tracks ASAP
        currentCall?.endCall(originatedByMe)
-        close()
    }

    fun onWiredDeviceEvent(event: WiredHeadsetStateReceiver.HeadsetPlugEvent) {
@ -478,6 +392,7 @@ class WebRtcPeerConnectionManager @Inject constructor(
    override fun onCallManagedByOtherSession(callId: String) {
        Timber.v("## VOIP onCallManagedByOtherSession: $callId")
        currentCall = null
+        callsByCallId.remove(callId)
        CallService.onNoActiveCall(context)

        // did we start background sync? so we should stop it
--- a/vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt
@ -35,7 +35,7 @@ import im.vector.app.core.ui.views.ActiveCallViewHolder
 import im.vector.app.core.ui.views.KeysBackupBanner
 import im.vector.app.features.call.SharedActiveCallViewModel
 import im.vector.app.features.call.VectorCallActivity
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.home.room.list.RoomListFragment
 import im.vector.app.features.home.room.list.RoomListParams
 import im.vector.app.features.popup.PopupAlertManager
@ -62,7 +62,7 @@ class HomeDetailFragment @Inject constructor(
        private val serverBackupStatusViewModelFactory: ServerBackupStatusViewModel.Factory,
        private val avatarRenderer: AvatarRenderer,
        private val alertManager: PopupAlertManager,
-        private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
+        private val callManager: WebRtcCallManager,
        private val vectorPreferences: VectorPreferences
 ) : VectorBaseFragment(), KeysBackupBanner.Delegate, ActiveCallView.Callback, ServerBackupStatusViewModel.Factory {

@ -120,7 +120,7 @@ class HomeDetailFragment @Inject constructor(
        sharedCallActionViewModel
                .activeCall
                .observe(viewLifecycleOwner, Observer {
-                    activeCallViewHolder.updateCall(it, webRtcPeerConnectionManager)
+                    activeCallViewHolder.updateCall(it, callManager)
                    invalidateOptionsMenu()
                })
    }
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
@ -116,7 +116,7 @@ import im.vector.app.features.attachments.preview.AttachmentsPreviewArgs
 import im.vector.app.features.attachments.toGroupedContentAttachmentData
 import im.vector.app.features.call.SharedActiveCallViewModel
 import im.vector.app.features.call.VectorCallActivity
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.call.conference.JitsiCallViewModel
 import im.vector.app.features.command.Command
 import im.vector.app.features.crypto.keysbackup.restore.KeysBackupRestoreActivity
@ -218,7 +218,7 @@ class RoomDetailFragment @Inject constructor(
        private val vectorPreferences: VectorPreferences,
        private val colorProvider: ColorProvider,
        private val notificationUtils: NotificationUtils,
-        private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
+        private val callManager: WebRtcCallManager,
        private val matrixItemColorProvider: MatrixItemColorProvider,
        private val imageContentRenderer: ImageContentRenderer,
        private val roomDetailPendingActionStore: RoomDetailPendingActionStore
@ -315,7 +315,7 @@ class RoomDetailFragment @Inject constructor(
        sharedCallActionViewModel
                .activeCall
                .observe(viewLifecycleOwner, Observer {
-                    activeCallViewHolder.updateCall(it, webRtcPeerConnectionManager)
+                    activeCallViewHolder.updateCall(it, callManager)
                    invalidateOptionsMenu()
                })

@ -514,7 +514,7 @@ class RoomDetailFragment @Inject constructor(
    }

    override fun onDestroy() {
-        activeCallViewHolder.unBind(webRtcPeerConnectionManager)
+        activeCallViewHolder.unBind(callManager)
        roomDetailViewModel.handle(RoomDetailAction.ExitTrackingUnreadMessagesState)
        super.onDestroy()
    }
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewModel.kt
@ -32,7 +32,7 @@ import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.core.resources.StringProvider
 import im.vector.app.core.utils.subscribeLogError
-import im.vector.app.features.call.webrtc.WebRtcPeerConnectionManager
+import im.vector.app.features.call.webrtc.WebRtcCallManager
 import im.vector.app.features.command.CommandParser
 import im.vector.app.features.command.ParsedCommand
 import im.vector.app.features.crypto.verification.SupportedVerificationMethodsProvider
@ -114,7 +114,7 @@ class RoomDetailViewModel @AssistedInject constructor(
        private val stickerPickerActionHandler: StickerPickerActionHandler,
        private val roomSummaryHolder: RoomSummaryHolder,
        private val typingHelper: TypingHelper,
-        private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
+        private val callManager: WebRtcCallManager,
        timelineSettingsFactory: TimelineSettingsFactory
 ) : VectorViewModel<RoomDetailViewState, RoomDetailAction, RoomDetailViewEvents>(initialState), Timeline.Listener {

@ -306,12 +306,12 @@ class RoomDetailViewModel @AssistedInject constructor(

    private fun handleStartCall(action: RoomDetailAction.StartCall) {
        room.roomSummary()?.otherMemberIds?.firstOrNull()?.let {
-            webRtcPeerConnectionManager.startOutgoingCall(room.roomId, it, action.isVideo)
+            callManager.startOutgoingCall(room.roomId, it, action.isVideo)
        }
    }

    private fun handleEndCall() {
-        webRtcPeerConnectionManager.endCall()
+        callManager.endCall()
    }

    private fun handleSelectStickerAttachment() {
@ -566,7 +566,7 @@ class RoomDetailViewModel @AssistedInject constructor(
            R.id.open_matrix_apps    -> true
            R.id.voice_call,
            R.id.video_call          -> true // always show for discoverability
-            R.id.hangup_call         -> webRtcPeerConnectionManager.currentCall != null
+            R.id.hangup_call         -> callManager.currentCall != null
            R.id.search              -> true
            else                     -> false
        }