MLCE-530 Add front end support for UnidirectionalSequenceLstm on ArmNN

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I57bcbdec3eb0155f41af0fe7d6abf9bac2ec86eb

1 files changed, 76 insertions, 0 deletions

diff --git a/src/armnn/layers/LstmParameters.hpp b/src/armnn/layers/LstmParameters.hpp
new file mode 100644
index 0000000000..3809ea875f
--- /dev/null
+++ b/src/armnn/layers/LstmParameters.hpp
@@ -0,0 +1,76 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include "LayerWithParameters.hpp"
+
+namespace armnn
+{
+
+class ScopedTensorHandle;
+
+struct LstmOptLayerNormParameters
+{
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_InputLayerNormWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_ForgetLayerNormWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_CellLayerNormWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_OutputLayerNormWeights;
+};
+
+struct LstmOptCifgParameters
+{
+    /// A unique pointer to represent 2D weights tensor with dimensions [input_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_InputToInputWeights;
+    /// A unique pointer to represent 2D weights tensor with dimensions [input_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_RecurrentToInputWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_InputGateBias;
+};
+
+struct LstmOptProjectionParameters
+{
+    /// A unique pointer to represent 2D weights tensor with dimensions [output_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_ProjectionWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [output_size].
+    std::shared_ptr<ConstTensorHandle> m_ProjectionBias;
+};
+
+struct LstmOptPeepholeParameters
+{
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_CellToInputWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_CellToForgetWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_CellToOutputWeights;
+};
+
+struct LstmBasicParameters
+{
+    /// A unique pointer to represent 2D weights tensor with dimensions [input_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_InputToForgetWeights;
+    /// A unique pointer to represent 2D weights tensor with dimensions [input_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_InputToCellWeights;
+    /// A unique pointer to represent 2D weights tensor with dimensions [input_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_InputToOutputWeights;
+    /// A unique pointer to represent 2D weights tensor with dimensions [output_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_RecurrentToForgetWeights;
+    /// A unique pointer to represent 2D weights tensor with dimensions [output_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_RecurrentToCellWeights;
+    /// A unique pointer to represent 2D weights tensor with dimensions [output_size, num_units].
+    std::shared_ptr<ConstTensorHandle> m_RecurrentToOutputWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_ForgetGateBias;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_CellBias;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::shared_ptr<ConstTensorHandle> m_OutputGateBias;
+};
+
+} // namespace