IVGCVSW-3038 Move MakeInputTensors to armnnUtils

Change-Id: I4352a645badde788b9e33b3675a9cc9c0fc3dc33
Signed-off-by: Jim Flynn <jim.flynn@arm.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/src/armnnUtils/TensorIOUtils.hpp b/src/armnnUtils/TensorIOUtils.hpp
new file mode 100644
index 0000000000..bf5a37b00f
--- /dev/null
+++ b/src/armnnUtils/TensorIOUtils.hpp
@@ -0,0 +1,87 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <armnn/Tensor.hpp>
+#include <vector>
+
+#include <boost/format.hpp>
+#include <boost/variant/apply_visitor.hpp>
+
+namespace armnnUtils
+{
+
+template<typename TContainer>
+inline armnn::InputTensors MakeInputTensors(
+    const std::vector<armnn::BindingPointInfo>& inputBindings,
+    const std::vector<TContainer>& inputDataContainers)
+{
+    armnn::InputTensors inputTensors;
+
+    const size_t numInputs = inputBindings.size();
+    if (numInputs != inputDataContainers.size())
+    {
+        throw armnn::Exception(boost::str(boost::format("Number of inputs does not match number of "
+            "tensor data containers: %1% != %2%") % numInputs % inputDataContainers.size()));
+    }
+
+    for (size_t i = 0; i < numInputs; i++)
+    {
+        const armnn::BindingPointInfo& inputBinding = inputBindings[i];
+        const TContainer& inputData = inputDataContainers[i];
+
+        boost::apply_visitor([&](auto&& value)
+                             {
+                                 if (value.size() != inputBinding.second.GetNumElements())
+                                 {
+                                    throw armnn::Exception("Input tensor has incorrect size");
+                                 }
+
+                                 armnn::ConstTensor inputTensor(inputBinding.second, value.data());
+                                 inputTensors.push_back(std::make_pair(inputBinding.first, inputTensor));
+                             },
+                             inputData);
+    }
+
+    return inputTensors;
+}
+
+template<typename TContainer>
+inline armnn::OutputTensors MakeOutputTensors(
+    const std::vector<armnn::BindingPointInfo>& outputBindings,
+    std::vector<TContainer>& outputDataContainers)
+{
+    armnn::OutputTensors outputTensors;
+
+    const size_t numOutputs = outputBindings.size();
+    if (numOutputs != outputDataContainers.size())
+    {
+        throw armnn::Exception(boost::str(boost::format("Number of outputs does not match number of "
+            "tensor data containers: %1% != %2%") % numOutputs % outputDataContainers.size()));
+    }
+
+    for (size_t i = 0; i < numOutputs; i++)
+    {
+        const armnn::BindingPointInfo& outputBinding = outputBindings[i];
+        TContainer& outputData = outputDataContainers[i];
+
+        boost::apply_visitor([&](auto&& value)
+                             {
+                                 if (value.size() != outputBinding.second.GetNumElements())
+                                 {
+                                     throw armnn::Exception("Output tensor has incorrect size");
+                                 }
+
+                                 armnn::Tensor outputTensor(outputBinding.second, value.data());
+                                 outputTensors.push_back(std::make_pair(outputBinding.first, outputTensor));
+                             },
+                             outputData);
+    }
+
+    return outputTensors;
+}
+
+} // namespace armnnUtils
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