COMPMID-363 Add Graph library support

Change-Id: Ie841419bf65d0e06bdfe0bdd2d8d4e0bb3631e54
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/87931
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/arm_compute/graph/Tensor.h b/arm_compute/graph/Tensor.h
new file mode 100644
index 0000000000..0e823ffad0
--- /dev/null
+++ b/arm_compute/graph/Tensor.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2017 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 __ARM_COMPUTE_GRAPH_TENSOR_H__
+#define __ARM_COMPUTE_GRAPH_TENSOR_H__
+
+#include "arm_compute/graph/ITensorAccessor.h"
+#include "arm_compute/graph/Types.h"
+#include "support/ToolchainSupport.h"
+
+#include <memory>
+
+namespace arm_compute
+{
+namespace graph
+{
+/** Tensor class */
+class Tensor
+{
+public:
+    /** Constructor
+     *
+     * @param[in] info Tensor info to use
+     */
+    Tensor(TensorInfo &&info);
+    /** Constructor
+     *
+     * @param[in] accessor Tensor accessor
+     */
+    template <typename AccessorType>
+    Tensor(std::unique_ptr<AccessorType> accessor)
+        : _target(Hint::DONT_CARE), _info(), _accessor(std::move(accessor)), _tensor(nullptr)
+    {
+    }
+    /** Constructor
+     *
+     * @param[in] accessor Tensor accessor
+     */
+    template <typename AccessorType>
+    Tensor(AccessorType &&accessor)
+        : _target(Hint::DONT_CARE), _info(), _accessor(arm_compute::support::cpp14::make_unique<AccessorType>(std::forward<AccessorType>(accessor))), _tensor(nullptr)
+    {
+    }
+    /** Constructor
+     *
+     * @param[in] info     Tensor info to use
+     * @param[in] accessor Tensor accessor
+     */
+    template <typename AccessorType>
+    Tensor(TensorInfo &&info, AccessorType &&accessor)
+        : _target(Hint::DONT_CARE), _info(info), _accessor(arm_compute::support::cpp14::make_unique<AccessorType>(std::forward<AccessorType>(accessor))), _tensor(nullptr)
+    {
+    }
+    /** Default Destructor */
+    ~Tensor() = default;
+    /** Move Constructor
+     *
+     * @param[in] src Tensor to move
+     */
+    Tensor(Tensor &&src) noexcept;
+
+    /** Sets the given TensorInfo to the tensor
+     *
+     * @param[in] info TensorInfo to set
+     */
+    void set_info(TensorInfo &&info);
+    /** Calls accessor on tensor
+     *
+     * @return True if succeeds else false
+     */
+    bool call_accessor();
+    /** Sets target of the tensor
+     *
+     * @param[in] target Target where the tensor should be pinned in
+     *
+     * @return
+     */
+    ITensor *set_target(Hint target);
+    /** Returns tensor's TensorInfo
+     *
+     * @return TensorInfo of the tensor
+     */
+    const TensorInfo &info() const;
+    /** Returns a pointer to the internal tensor
+     *
+     * @return Tensor
+     */
+    ITensor *tensor();
+    /** Allocates and fills the tensor if needed */
+    void allocate_and_fill_if_needed();
+    /** Allocates the tensor */
+    void allocate();
+    /** Return the target that this tensor is pinned on
+     *
+     * @return Target of the tensor
+     */
+    Hint target() const;
+
+private:
+    Hint                             _target;   /**< Target that this tensor is pinned on */
+    TensorInfo                       _info;     /**< Tensor metadata */
+    std::unique_ptr<ITensorAccessor> _accessor; /**< Tensor Accessor */
+    std::unique_ptr<ITensor>         _tensor;   /**< Tensor */
+};
+} // namespace graph
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH_TENSOR_H__ */