[video_player] Increase seeking performance

packages/video_player/video_player_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.3.3
+
+* Rate limited `seekTo` calls for ExoPlayer.
+
 ## 2.3.2
 
 * Updates ExoPlayer to 2.17.0.

packages/video_player/video_player_android/android/src/main/java/io/flutter/plugins/videoplayer/VideoPlayer.java

@@ -153,6 +153,8 @@ private MediaSource buildMediaSource(
     }
   }
 
+  boolean readyToSeek = false;
+
   private void setupVideoPlayer(
       EventChannel eventChannel, TextureRegistry.SurfaceTextureEntry textureEntry) {
     eventChannel.setStreamHandler(
@@ -191,6 +193,10 @@ public void onPlaybackStateChanged(final int playbackState) {
               setBuffering(true);
               sendBufferingUpdate();
             } else if (playbackState == Player.STATE_READY) {
+              readyToSeek = true; // indicate that seeking the video is now possible
+              if (futureLocation != -1) {
+                seekTo(futureLocation);
+              }
               if (!isInitialized) {
                 isInitialized = true;
                 sendInitialized();
@@ -255,8 +261,19 @@ void setPlaybackSpeed(double value) {
     exoPlayer.setPlaybackParameters(playbackParameters);
   }
 
+  int futureLocation = -1;
+
   void seekTo(int location) {
-    exoPlayer.seekTo(location);
+    // Try to set the location, if the player is currently buffering because
+    // of a previous seekTo, save the futureLocation to be seeked when the
+    // player will be readyToSeek
+    if (readyToSeek) {
+      readyToSeek = false;
+      futureLocation = -1;
+      exoPlayer.seekTo(location);
+    } else {
+      futureLocation = location;
+    }
   }
 
   long getPosition() {

packages/video_player/video_player_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: video_player_android
 description: Android implementation of the video_player plugin.
 repository: https://github.com/flutter/plugins/tree/master/packages/video_player/video_player_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+video_player%22
-version: 2.3.2
+version: 2.3.3
 
 environment:
   sdk: ">=2.14.0 <3.0.0"