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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsIInputStream.idl"
+#include "nsIOutputStream.idl"
+
+/**
+ * An input stream that reads ahead and keeps a buffer coming from another input
+ * stream so that fewer accesses to the underlying stream are necessary.
+ */
+[scriptable, builtinclass, uuid(616f5b48-da09-11d3-8cda-0060b0fc14a3)]
+interface nsIBufferedInputStream : nsIInputStream
+{
+ /**
+ * @param fillFromStream - add buffering to this stream
+ * @param bufferSize - specifies the maximum buffer size
+ */
+ void init(in nsIInputStream fillFromStream,
+ in unsigned long bufferSize);
+
+ /**
+ * Get the wrapped data stream
+ */
+ readonly attribute nsIInputStream data;
+};
+
+/**
+ * An output stream that stores up data to write out to another output stream
+ * and does the entire write only when the buffer is full, so that fewer writes
+ * to the underlying output stream are necessary.
+ */
+[scriptable, builtinclass, uuid(6476378a-da09-11d3-8cda-0060b0fc14a3)]
+interface nsIBufferedOutputStream : nsIOutputStream
+{
+ /**
+ * @param sinkToStream - add buffering to this stream
+ * @param bufferSize - specifies the maximum buffer size
+ */
+ void init(in nsIOutputStream sinkToStream,
+ in unsigned long bufferSize);
+
+ /**
+ * Get the wrapped data stream
+ */
+ readonly attribute nsIOutputStream data;
+};