1 files changed, 105 insertions, 0 deletions
diff --git a/src/graph/SubTensor.cpp b/src/graph/SubTensor.cpp
new file mode 100644
index 0000000000..a70f32927b
--- /dev/null
+++ b/src/graph/SubTensor.cpp
@@ -0,0 +1,105 @@
+/*
+ * 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.
+ */
+
+#include "arm_compute/graph/SubTensor.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/Validate.h"
+#include "arm_compute/runtime/CL/CLSubTensor.h"
+#include "arm_compute/runtime/SubTensor.h"
+#include "utils/TypePrinter.h"
+
+using namespace arm_compute::graph;
+
+namespace
+{
+template <typename SubTensorType, typename ParentTensorType>
+std::unique_ptr<ITensor> initialise_subtensor(ITensor *parent, TensorShape shape, Coordinates coords)
+{
+    auto ptensor   = dynamic_cast<ParentTensorType *>(parent);
+    auto subtensor = arm_compute::support::cpp14::make_unique<SubTensorType>(ptensor, shape, coords);
+    return std::move(subtensor);
+}
+} // namespace
+
+SubTensor::SubTensor()
+    : _target(Hint::DONT_CARE), _coords(), _info(), _parent(nullptr), _subtensor(nullptr)
+{
+}
+
+SubTensor::SubTensor(Tensor &parent, TensorShape tensor_shape, Coordinates coords)
+    : _target(Hint::DONT_CARE), _coords(coords), _info(), _parent(nullptr), _subtensor(nullptr)
+{
+    ARM_COMPUTE_ERROR_ON(parent.tensor() == nullptr);
+    _parent = parent.tensor();
+    _info   = SubTensorInfo(parent.tensor()->info(), tensor_shape, coords);
+    _target = parent.target();
+
+    instantiate_subtensor();
+}
+
+SubTensor::SubTensor(ITensor *parent, TensorShape tensor_shape, Coordinates coords, Hint target)
+    : _target(target), _coords(coords), _info(), _parent(parent), _subtensor(nullptr)
+{
+    ARM_COMPUTE_ERROR_ON(parent == nullptr);
+    _info = SubTensorInfo(parent->info(), tensor_shape, coords);
+
+    instantiate_subtensor();
+}
+
+void SubTensor::set_info(SubTensorInfo &&info)
+{
+    _info = info;
+}
+
+const SubTensorInfo &SubTensor::info() const
+{
+    return _info;
+}
+
+ITensor *SubTensor::tensor()
+{
+    return _subtensor.get();
+}
+
+Hint SubTensor::target() const
+{
+    return _target;
+}
+
+void SubTensor::instantiate_subtensor()
+{
+    switch(_target)
+    {
+        case Hint::OPENCL:
+            _subtensor = initialise_subtensor<arm_compute::CLSubTensor, arm_compute::ICLTensor>(_parent, _info.tensor_shape(), _coords);
+            break;
+        case Hint::NEON:
+            _subtensor = initialise_subtensor<arm_compute::SubTensor, arm_compute::ITensor>(_parent, _info.tensor_shape(), _coords);
+            break;
+        default:
+            ARM_COMPUTE_ERROR("Invalid Hint");
+    }
+}