1 files changed, 74 insertions, 0 deletions
diff --git a/java/org/brotli/wrapper/dec/BrotliDecoderChannel.java b/java/org/brotli/wrapper/dec/BrotliDecoderChannel.java
new file mode 100755
index 0000000..e7b4bdf
--- /dev/null
+++ b/java/org/brotli/wrapper/dec/BrotliDecoderChannel.java
@@ -0,0 +1,74 @@
+/* Copyright 2017 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+package org.brotli.wrapper.dec;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ClosedChannelException;
+import java.nio.channels.ReadableByteChannel;
+
+/**
+ * ReadableByteChannel that wraps native brotli decoder.
+ */
+public class BrotliDecoderChannel extends Decoder implements ReadableByteChannel {
+  /** The default internal buffer size used by the decoder. */
+  private static final int DEFAULT_BUFFER_SIZE = 16384;
+
+  private final Object mutex = new Object();
+
+  /**
+   * Creates a BrotliDecoderChannel.
+   *
+   * @param source underlying source
+   * @param bufferSize intermediate buffer size
+   * @param customDictionary initial LZ77 dictionary
+   */
+  public BrotliDecoderChannel(ReadableByteChannel source, int bufferSize,
+      ByteBuffer customDictionary) throws IOException {
+    super(source, bufferSize, customDictionary);
+  }
+
+  public BrotliDecoderChannel(ReadableByteChannel source, int bufferSize) throws IOException {
+    super(source, bufferSize, null);
+  }
+
+  public BrotliDecoderChannel(ReadableByteChannel source) throws IOException {
+    this(source, DEFAULT_BUFFER_SIZE);
+  }
+
+  @Override
+  public boolean isOpen() {
+    synchronized (mutex) {
+      return !closed;
+    }
+  }
+
+  @Override
+  public void close() throws IOException {
+    synchronized (mutex) {
+      super.close();
+    }
+  }
+
+  @Override
+  public int read(ByteBuffer dst) throws IOException {
+    synchronized (mutex) {
+      if (closed) {
+        throw new ClosedChannelException();
+      }
+      int result = 0;
+      while (dst.hasRemaining()) {
+        int outputSize = decode();
+        if (outputSize == -1) {
+          return result == 0 ? -1 : result;
+        }
+        result += consume(dst);
+      }
+      return result;
+    }
+  }
+}