1 files changed, 52 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/sys/Codec.h b/qpid/cpp/src/qpid/sys/Codec.h
new file mode 100644
index 0000000000..ace721fbcc
--- /dev/null
+++ b/qpid/cpp/src/qpid/sys/Codec.h
@@ -0,0 +1,52 @@
+#ifndef QPID_SYS_CODEC_H
+#define QPID_SYS_CODEC_H
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ *
+ */
+#include <cstddef>
+
+namespace qpid {
+namespace sys {
+
+/**
+ * Generic codec interface
+ */
+class Codec
+{
+  public:
+    virtual ~Codec() {}
+
+    /** Decode from buffer, return number of bytes decoded.
+     * @return may be less than size if there was incomplete
+     * data at the end of the buffer.
+     */
+    virtual std::size_t decode(const char* buffer, std::size_t size) = 0;
+
+
+    /** Encode into buffer, return number of bytes encoded */
+    virtual std::size_t encode(const char* buffer, std::size_t size) = 0;
+
+    /** Return true if we have data to encode */
+    virtual bool canEncode() = 0;
+};
+}} // namespace qpid::sys
+
+#endif  /*!QPID_SYS_CODEC_H*/