first step

app/src/main/java/asgardius/page/s3manager/CacheDataSourceFactory.java

@@ -0,0 +1,41 @@
+package asgardius.page.s3manager;
+
+import android.content.Context;
+
+import com.google.android.exoplayer2.database.DatabaseProvider;
+import com.google.android.exoplayer2.upstream.DataSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSource;
+import com.google.android.exoplayer2.upstream.FileDataSource;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSink;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
+import com.google.android.exoplayer2.upstream.cache.LeastRecentlyUsedCacheEvictor;
+import com.google.android.exoplayer2.upstream.cache.SimpleCache;
+import com.google.android.exoplayer2.util.Util;
+
+import java.io.File;
+
+public class CacheDataSourceFactory implements DataSource.Factory {
+    private final Context context;
+    private final DefaultDataSource.Factory defaultDatasourceFactory;
+    private final long maxFileSize, maxCacheSize;
+    //DatabaseProvider databaseProvider = ExoDatabaseProvider(this);
+
+    public CacheDataSourceFactory(Context context, long maxCacheSize, long maxFileSize) {
+        super();
+        this.context = context;
+        this.maxCacheSize = maxCacheSize;
+        this.maxFileSize = maxFileSize;
+        String userAgent = Util.getUserAgent(context, context.getString(R.string.app_name));
+        //DefaultBandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
+        defaultDatasourceFactory = new DefaultDataSource.Factory(this.context);
+    }
+
+    @Override
+    public DataSource createDataSource() {
+        LeastRecentlyUsedCacheEvictor evictor = new LeastRecentlyUsedCacheEvictor(maxCacheSize);
+        SimpleCache simpleCache = new SimpleCache(new File(context.getCacheDir(), "media"), evictor);
+        return new CacheDataSource(simpleCache, defaultDatasourceFactory.createDataSource(),
+                new FileDataSource(), new CacheDataSink(simpleCache, maxFileSize),
+                CacheDataSource.FLAG_BLOCK_ON_CACHE | CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR, null);
+    }
+}

app/src/main/java/asgardius/page/s3manager/VideoPlayer.java

@@ -3,6 +3,7 @@ package asgardius.page.s3manager;
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.content.Context;
+import android.net.Uri;
 import android.net.wifi.WifiManager;
 import android.os.Bundle;
 import android.os.PowerManager;
@@ -13,6 +14,9 @@ import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.PlaybackException;
 import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory;
+import com.google.android.exoplayer2.source.MediaSource;
+import com.google.android.exoplayer2.source.ProgressiveMediaSource;
 import com.google.android.exoplayer2.ui.StyledPlayerView;
 import com.google.android.exoplayer2.upstream.HttpDataSource;
 
@@ -43,6 +47,8 @@ public class VideoPlayer extends AppCompatActivity {
         playerView = findViewById(R.id.player_view);
         // creating a variable for exoplayer
         player = new ExoPlayer.Builder(this).build();
+        //MediaSource audioSource = new ProgressiveMediaSource(Uri.parse("url"),
+        //        new CacheDataSourceFactory(this, 100 * 1024 * 1024, 5 * 1024 * 1024), new DefaultExtractorsFactory(), null, null);
         // Attach player to the view.
         playerView.setPlayer(player);
         MediaItem mediaItem = MediaItem.fromUri(videoURL);
@@ -50,6 +56,8 @@ public class VideoPlayer extends AppCompatActivity {
         // Set the media item to be played.
         player.setMediaItem(mediaItem);
         // Prepare the player.
+        player.setPlayWhenReady(true);
+        //player.setMediaSource(audioSource);
         player.prepare();
         // Start the playback.
         player.play();