Added back video preview on call activity while in PiP mode + added setting to keep previous behavior even if not recommended

app/src/main/AndroidManifest.xml

@@ -102,6 +102,7 @@
 
         <activity android:name=".activities.call.CallActivity"
             android:launchMode="singleTop"
+            android:resizeableActivity="true"
             android:supportsPictureInPicture="true" />
 
         <activity android:name=".activities.call.IncomingCallActivity"

app/src/main/java/org/linphone/activities/call/CallActivity.kt

@@ -26,6 +26,7 @@ import android.view.MotionEvent
 import androidx.databinding.DataBindingUtil
 import androidx.lifecycle.ViewModelProvider
 import org.linphone.LinphoneApplication.Companion.coreContext
+import org.linphone.LinphoneApplication.Companion.corePreferences
 import org.linphone.R
 import org.linphone.activities.call.viewmodels.ControlsFadingViewModel
 import org.linphone.activities.call.viewmodels.SharedCallViewModel
@@ -134,6 +135,11 @@ class CallActivity : ProximitySensorActivity() {
         if (isInPictureInPictureMode) {
             viewModel.areControlsHidden.value = true
         }
-        viewModel.isVideoPreviewHidden.value = isInPictureInPictureMode
+
+        if (corePreferences.hideCameraPreviewInPipMode) {
+            viewModel.isVideoPreviewHidden.value = isInPictureInPictureMode
+        } else {
+            viewModel.isVideoPreviewResizedForPip.value = isInPictureInPictureMode
+        }
     }
 }

app/src/main/java/org/linphone/activities/call/viewmodels/ControlsFadingViewModel.kt

@@ -38,6 +38,7 @@ class ControlsFadingViewModel : ViewModel() {
     val areControlsHidden = MutableLiveData<Boolean>()
 
     val isVideoPreviewHidden = MutableLiveData<Boolean>()
+    val isVideoPreviewResizedForPip = MutableLiveData<Boolean>()
 
     private val videoEnabled = MutableLiveData<Boolean>()
     private val nonEarpieceOutputAudioDevice = MutableLiveData<Boolean>()
@@ -78,6 +79,7 @@ class ControlsFadingViewModel : ViewModel() {
 
         areControlsHidden.value = false
         isVideoPreviewHidden.value = false
+        isVideoPreviewResizedForPip.value = false
         nonEarpieceOutputAudioDevice.value = coreContext.core.outputAudioDevice?.type != AudioDevice.Type.Earpiece
 
         val isVideoCall = coreContext.isVideoCallOrConferenceActive()

app/src/main/java/org/linphone/core/CorePreferences.kt

@@ -235,7 +235,7 @@ class CorePreferences constructor(private val context: Context) {
             config.setInt("app", "version_check_url_last_timestamp", value)
         }
 
-    /* Read only application settings previously in non_localizable_custom */
+    /* Read only application settings, some were previously in non_localizable_custom */
 
     val defaultDomain: String
         get() = config.getString("app", "default_domain", "sip.linphone.org")!!
@@ -279,6 +279,11 @@ class CorePreferences constructor(private val context: Context) {
     val showIncomingChatMessagesDeliveryStatus: Boolean
         get() = config.getBool("app", "show_incoming_messages_delivery_status", false)
 
+    // If enabled, this will cause the video to "freeze" on your correspondent screen
+    // as you won't send video packets anymore
+    val hideCameraPreviewInPipMode: Boolean
+        get() = config.getBool("app", "hide_camera_preview_in_pip_mode", false)
+
     /* Tabs */
 
     val showHistory: Boolean

app/src/main/java/org/linphone/utils/DataBindingUtils.kt

@@ -81,6 +81,12 @@ fun View.setLayoutHeight(dimension: Float) {
     this.layoutParams.height = dimension.toInt()
 }
 
+@BindingAdapter("android:layout_size")
+fun View.setLayoutSize(dimension: Float) {
+    this.layoutParams.height = dimension.toInt()
+    this.layoutParams.width = dimension.toInt()
+}
+
 @BindingAdapter("android:background")
 fun LinearLayout.setBackground(resource: Int) {
     this.setBackgroundResource(resource)

app/src/main/res/layout/call_activity.xml

@@ -30,8 +30,9 @@
 
             <org.linphone.mediastream.video.capture.CaptureTextureView
                 android:onTouch="@{previewTouchListener}"
-                android:visibility="@{viewModel.isVideoPreviewHidden ? View.INVISIBLE : View.VISIBLE}"
+                android:visibility="@{viewModel.isVideoPreviewHidden ? View.INVISIBLE : View.VISIBLE, default=visible}"
                 android:id="@+id/local_preview_video_surface"
+                android:layout_size="@{viewModel.isVideoPreviewResizedForPip ? @dimen/video_preview_pip_max_size : @dimen/video_preview_max_size}"
                 android:layout_width="200dp"
                 android:layout_height="200dp"
                 android:layout_alignParentRight="true"

app/src/main/res/values/dimen.xml

@@ -5,4 +5,6 @@
     <dimen name="outgoing_chat_message_bubble_left_margin">45dp</dimen>
     <dimen name="chat_message_bubble_image_height_big">200dp</dimen>
     <dimen name="chat_message_bubble_image_height_small">100dp</dimen>
+    <dimen name="video_preview_max_size">200dp</dimen>
+    <dimen name="video_preview_pip_max_size">50dp</dimen>
 </resources>