Asset loading

package/android/src/main/java/com/margelo/filament/FilamentProxy.java

@@ -17,6 +17,8 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.ByteBuffer;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
 
 /** @noinspection JavaJniMissingFunction*/
 class FilamentProxy {
@@ -52,13 +54,12 @@ FilamentChoreographer createChoreographer() {
  @Keep
  ByteBuffer getAssetByteBuffer(String assetName) throws IOException {
  InputStream input = reactContext.getAssets().open(assetName);
- byte[] bytes = new byte[input.available()];
- input.read(bytes);
- input.close();
-
- // Allocate a *direct* ByteBuffer and put the bytes into it.
- ByteBuffer buffer = ByteBuffer.allocateDirect(bytes.length);
- buffer.put(bytes);
+ // Create a channel from the input stream
+ ReadableByteChannel channel = Channels.newChannel(input);
+ int estimatedSize = input.available(); // This is not always accurate for the actual size
+ ByteBuffer buffer = ByteBuffer.allocateDirect(estimatedSize);
+ // Read directly into the ByteBuffer via the channel
+ int res = channel.read(buffer);
  // Reset position to 0 to be ready for reading
  buffer.flip();