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+/*
+ * Copyright (c) 2021 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef SRC_COMMON_OBJECT_H_
+#define SRC_COMMON_OBJECT_H_
+
+#include <cstdint>
+
+namespace arm_compute
+{
+// Forward declarations
+class IContext;
+
+namespace detail
+{
+/**< Object type enumerations */
+enum class ObjectType : uint32_t
+{
+ Context = 1,
+ Queue = 2,
+ Tensor = 3,
+ TensorPack = 4,
+ Operator = 5,
+ Invalid = 0x56DEAD78
+};
+
+/**< API Header meta-data construct used by all opaque constructs */
+struct Header
+{
+ /** Constructor
+ *
+ * @param[in] type_ Object identification type
+ * @param[in] ctx_ Context to reference
+ */
+ Header(ObjectType type_, IContext *ctx_)
+ : type(type_), ctx(ctx_)
+ {
+ }
+
+ ObjectType type{ ObjectType::Invalid };
+ IContext *ctx{ nullptr };
+};
+} // namespace detail
+} // namespace arm_compute
+#endif /* SRC_COMMON_OBJECT_H_ */