chore: virtual bg sample

samples/android-ui-kit-sample-kotlin/app/build.gradle

@@ -39,7 +39,8 @@ dependencies {
   implementation 'com.google.android.material:material:1.5.0'
   implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
 
-  implementation 'io.dyte:uikit:1.14.6'
+  implementation 'io.dyte:uikit:1.15.1'
+  implementation 'io.dyte:virtual_background:0.0.1'
 
   testImplementation 'junit:junit:4.13.2'
   androidTestImplementation 'androidx.test.ext:junit:1.1.5'

samples/android-ui-kit-sample-kotlin/app/src/main/java/io/dyte/androiduikitsamplekotlin/MainActivity.kt

@@ -1,11 +1,18 @@
 package io.dyte.androiduikitsamplekotlin
 
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.util.Base64
 import android.widget.Button
 import dyte.io.uikit.DyteUIKitBuilder
 import dyte.io.uikit.DyteUIKitInfo
+import io.dyte.core.listeners.DyteMeetingRoomEventsListener
 import io.dyte.core.models.DyteMeetingInfoV2
+import io.dyte.core.observability.DyteLogger
+import io.dyte.virtual_background.VirtualBackground
+import java.io.ByteArrayOutputStream
 
 class MainActivity : AppCompatActivity() {
   private lateinit var btnStartMeeting: Button
@@ -30,6 +37,18 @@ class MainActivity : AppCompatActivity() {
       dyteMeetingInfo = meetingInfo
     )
     val dyteUIKit = DyteUIKitBuilder.build(dyteUIKitInfo)
+    dyteUIKit.meeting.addMeetingRoomEventsListener(object : DyteMeetingRoomEventsListener {
+      override fun onMeetingRoomJoinCompleted() {
+        super.onMeetingRoomJoinCompleted()
+        println("MainActivity::onMeetingRoomJoinCompleted::")
+        val byteArrayOutputStream = ByteArrayOutputStream()
+        val bitmap = BitmapFactory.decodeResource(resources, R.drawable.sample)
+        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream)
+        val imageBytes: ByteArray = byteArrayOutputStream.toByteArray()
+        val imageString: String = Base64.encodeToString(imageBytes, Base64.DEFAULT)
+        dyteUIKit.meeting.localUser.addVideoMiddleware(VirtualBackground(imageString))
+      }
+    })
     dyteUIKit.startMeeting()
   }
 }