Release 18.08

1 files changed, 70 insertions, 0 deletions

diff --git a/src/armnn/layers/LstmLayer.hpp b/src/armnn/layers/LstmLayer.hpp
new file mode 100644
index 0000000000..7133ad26a5
--- /dev/null
+++ b/src/armnn/layers/LstmLayer.hpp
@@ -0,0 +1,70 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// See LICENSE file in the project root for full license information.
+//
+#pragma once
+
+#include "LayerWithParameters.hpp"
+
+namespace armnn
+{
+
+class ScopedCpuTensorHandle;
+
+struct LstmOptCifgParameters
+{
+    std::unique_ptr<ScopedCpuTensorHandle> m_InputToInputWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToInputWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_CellToInputWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_InputGateBias;
+};
+
+struct LstmOptProjectionParameters
+{
+    std::unique_ptr<ScopedCpuTensorHandle> m_ProjectionWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_ProjectionBias;
+};
+
+struct LstmOptPeepholeParameters
+{
+    std::unique_ptr<ScopedCpuTensorHandle> m_CellToForgetWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_CellToOutputWeights;
+};
+
+struct LstmBasicParameters
+{
+    std::unique_ptr<ScopedCpuTensorHandle> m_InputToForgetWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_InputToCellWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_InputToOutputWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToForgetWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToCellWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToOutputWeights;
+    std::unique_ptr<ScopedCpuTensorHandle> m_ForgetGateBias;
+    std::unique_ptr<ScopedCpuTensorHandle> m_CellBias;
+    std::unique_ptr<ScopedCpuTensorHandle> m_OutputGateBias;
+};
+
+class LstmLayer : public LayerWithParameters<LstmDescriptor>
+{
+public:
+
+    LstmBasicParameters m_BasicParameters;
+    LstmOptCifgParameters m_CifgParameters;
+    LstmOptProjectionParameters m_ProjectionParameters;
+    LstmOptPeepholeParameters m_PeepholeParameters;
+
+    virtual std::unique_ptr<IWorkload> CreateWorkload(const Graph&            graph,
+                                                      const IWorkloadFactory& factory) const override;
+    LstmLayer* Clone(Graph& graph) const override;
+
+    void ValidateTensorShapesFromInputs() override;
+    std::vector<TensorShape> InferOutputShapes(const std::vector<TensorShape>& inputShapes) const override;
+
+protected:
+    LstmLayer(const LstmDescriptor& param, const char* name);
+    ~LstmLayer() = default;
+
+    Layer::ConstantTensors GetConstantTensorsByRef() override;
+};
+
+} // namespace