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diff --git a/applications/message_process/include/message_process.hpp b/applications/message_process/include/message_process.hpp
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+++ b/applications/message_process/include/message_process.hpp
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+/*
+ * Copyright (c) 2020 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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
+ *
+ * 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.
+ */
+
+#ifndef MESSAGE_PROCESS_H
+#define MESSAGE_PROCESS_H
+
+#include <ethosu_core_interface.h>
+#include <inference_process.hpp>
+
+#include <cstddef>
+#include <cstdio>
+
+namespace MessageProcess {
+
+template <uint32_t SIZE>
+struct Queue {
+    ethosu_core_queue_header header;
+    uint8_t data[SIZE];
+
+    constexpr Queue() : header({SIZE, 0, 0}) {}
+
+    constexpr ethosu_core_queue *toQueue() {
+        return reinterpret_cast<ethosu_core_queue *>(&header);
+    }
+};
+
+class QueueImpl {
+public:
+    struct Vec {
+        const void *base;
+        size_t length;
+    };
+
+    QueueImpl(ethosu_core_queue &queue);
+
+    bool empty() const;
+    size_t available() const;
+    size_t capacity() const;
+    bool read(uint8_t *dst, uint32_t length);
+    bool write(const Vec *vec, size_t length);
+    bool write(const uint32_t type, const void *src = nullptr, uint32_t length = 0);
+
+    template <typename T>
+    bool read(T &dst) {
+        return read(reinterpret_cast<uint8_t *>(&dst), sizeof(dst));
+    }
+
+    template <typename T>
+    bool write(const uint32_t type, const T &src) {
+        return write(type, reinterpret_cast<const void *>(&src), sizeof(src));
+    }
+
+private:
+    ethosu_core_queue &queue;
+};
+
+class MessageProcess {
+public:
+    MessageProcess(ethosu_core_queue &in, ethosu_core_queue &out, InferenceProcess::InferenceProcess &inferenceProcess);
+
+    void run();
+    void handleIrq();
+    bool handleMessage();
+    void sendPong();
+    void sendInferenceRsp(uint64_t userArg, size_t ofmSize, bool failed);
+
+private:
+    QueueImpl queueIn;
+    QueueImpl queueOut;
+    InferenceProcess::InferenceProcess &inferenceProcess;
+};
+
+} // namespace MessageProcess
+
+#endif