Logging for WebRTC library (#75)

@@ -12,6 +12,12 @@ import timber.log.Timber
 
 class LiveKit {
     companion object {
+        /**
+         * [LoggingLevel] to use for Livekit logs. Set to [LoggingLevel.OFF] to turn off logs.
+         *
+         * Defaults to [LoggingLevel.OFF]
+         */
+        @JvmStatic
         var loggingLevel: LoggingLevel
             get() = LKLog.loggingLevel
             set(value) {
@@ -28,6 +34,14 @@ class LiveKit {
                 }
             }
 
+        /**
+         * Enables logs for the underlying WebRTC sdk logging. Used in conjunction with [loggingLevel].
+         *
+         * Note: WebRTC logging is very noisy and should only be used to diagnose native WebRTC issues.
+         */
+        @JvmStatic
+        var enableWebRTCLogging: Boolean = false
+
         fun create(
             appContext: Context,
             options: RoomOptions = RoomOptions(),

@@ -4,11 +4,14 @@ import android.content.Context
 import androidx.annotation.Nullable
 import dagger.Module
 import dagger.Provides
+import io.livekit.android.LiveKit
 import io.livekit.android.util.LKLog
+import io.livekit.android.util.LoggingLevel
 import io.livekit.android.webrtc.SimulcastVideoEncoderFactoryWrapper
 import org.webrtc.*
 import org.webrtc.audio.AudioDeviceModule
 import org.webrtc.audio.JavaAudioDeviceModule
+import timber.log.Timber
 import javax.inject.Named
 import javax.inject.Singleton
 
@@ -140,9 +143,25 @@ object RTCModule {
         PeerConnectionFactory.initialize(
             PeerConnectionFactory.InitializationOptions
                 .builder(appContext)
+                .setInjectableLogger({ s, severity, s2 ->
+                    if (!LiveKit.enableWebRTCLogging) {
+                        return@setInjectableLogger
+                    }
+
+                    val loggingLevel = when (severity) {
+                        Logging.Severity.LS_VERBOSE -> LoggingLevel.VERBOSE
+                        Logging.Severity.LS_INFO -> LoggingLevel.INFO
+                        Logging.Severity.LS_WARNING -> LoggingLevel.WARN
+                        Logging.Severity.LS_ERROR -> LoggingLevel.ERROR
+                        else -> LoggingLevel.OFF
+                    }
+
+                    LKLog.log(loggingLevel) {
+                        Timber.log(loggingLevel.toAndroidLogPriority(), "$s2: $s")
+                    }
+                }, Logging.Severity.LS_VERBOSE)
                 .createInitializationOptions()
         )
-
         return PeerConnectionFactory.builder()
             .setAudioDeviceModule(audioDeviceModule)
             .setVideoEncoderFactory(videoEncoderFactory)

 package io.livekit.android.util
+
+import android.util.Log
+
 enum class LoggingLevel {
     VERBOSE,
     INFO,
@@ -6,5 +9,18 @@ enum class LoggingLevel {
     WARN,
     ERROR,
     WTF,
-    OFF,
-}
\ No newline at end of file
+    OFF;
+
+    fun toAndroidLogPriority(): Int {
+        return when (this) {
+            VERBOSE -> Log.VERBOSE
+            INFO -> Log.INFO
+            DEBUG -> Log.DEBUG
+            WARN -> Log.WARN
+            ERROR -> Log.ERROR
+            WTF -> Log.ERROR
+            OFF -> 0
+        }
+    }
+}
+