1 files changed, 73 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ReusableBufferedOutputStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ReusableBufferedOutputStream.java
new file mode 100644
index 0000000000..cd38892be0
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ReusableBufferedOutputStream.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.mozilla.thirdparty.com.google.android.exoplayer2.util;
+
+import java.io.BufferedOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * This is a subclass of {@link BufferedOutputStream} with a {@link #reset(OutputStream)} method
+ * that allows an instance to be re-used with another underlying output stream.
+ */
+public final class ReusableBufferedOutputStream extends BufferedOutputStream {
+
+  private boolean closed;
+
+  public ReusableBufferedOutputStream(OutputStream out) {
+    super(out);
+  }
+
+  public ReusableBufferedOutputStream(OutputStream out, int size) {
+    super(out, size);
+  }
+
+  @Override
+  public void close() throws IOException {
+    closed = true;
+
+    Throwable thrown = null;
+    try {
+      flush();
+    } catch (Throwable e) {
+      thrown = e;
+    }
+    try {
+      out.close();
+    } catch (Throwable e) {
+      if (thrown == null) {
+        thrown = e;
+      }
+    }
+    if (thrown != null) {
+      Util.sneakyThrow(thrown);
+    }
+  }
+
+  /**
+   * Resets this stream and uses the given output stream for writing. This stream must be closed
+   * before resetting.
+   *
+   * @param out New output stream to be used for writing.
+   * @throws IllegalStateException If the stream isn't closed.
+   */
+  public void reset(OutputStream out) {
+    Assertions.checkState(closed);
+    this.out = out;
+    count = 0;
+    closed = false;
+  }
+}