fix(android): implement live configuration management (#3792)

* perf: ensure we do not provide callback to native if no callback provided from app

* chore: rework bufferConfig to make it more generic and reduce ReactExoplayerView code size

* chore: improve issue template

* fix(android): avoid video view flickering at playback startup

* feat(android): implement live buffer configuration

* chore: fix linter

android/src/main/java/com/brentvatne/exoplayer/ConfigurationUtils.kt

@@ -0,0 +1,36 @@
+package com.brentvatne.exoplayer
+
+import androidx.media3.common.MediaItem.LiveConfiguration
+import com.brentvatne.common.api.BufferConfig
+import com.brentvatne.common.api.BufferConfig.Live
+
+/**
+ * Helper functions to create exoplayer configuration
+ */
+object ConfigurationUtils {
+
+    /**
+     * Create a media3.LiveConfiguration.Builder from parsed BufferConfig
+     */
+    @JvmStatic
+    fun getLiveConfiguration(bufferConfig: BufferConfig): LiveConfiguration.Builder {
+        val liveConfiguration = LiveConfiguration.Builder()
+        val live: Live = bufferConfig.live
+        if (bufferConfig.live.maxOffsetMs >= 0) {
+            liveConfiguration.setMaxOffsetMs(live.maxOffsetMs)
+        }
+        if (bufferConfig.live.maxPlaybackSpeed >= 0) {
+            liveConfiguration.setMaxPlaybackSpeed(live.maxPlaybackSpeed)
+        }
+        if (bufferConfig.live.targetOffsetMs >= 0) {
+            liveConfiguration.setTargetOffsetMs(live.targetOffsetMs)
+        }
+        if (bufferConfig.live.minOffsetMs >= 0) {
+            liveConfiguration.setMinOffsetMs(live.minOffsetMs)
+        }
+        if (bufferConfig.live.minPlaybackSpeed >= 0) {
+            liveConfiguration.setMinPlaybackSpeed(live.minPlaybackSpeed)
+        }
+        return liveConfiguration
+    }
+}

android/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -965,6 +965,9 @@ public class ReactExoplayerView extends FrameLayout implements
             );
         }
 
+        MediaItem.LiveConfiguration.Builder liveConfiguration = ConfigurationUtils.getLiveConfiguration(bufferConfig);
+        mediaItemBuilder.setLiveConfiguration(liveConfiguration.build());
+
         MediaSource.Factory mediaSourceFactory;
         DrmSessionManagerProvider drmProvider;
         List<StreamKey> streamKeys = new ArrayList();