| // |
| // Copyright © 2023 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| |
| #pragma once |
| |
| #include <OpaqueDelegateUtils.hpp> |
| |
| namespace armnnOpaqueDelegate |
| { |
| |
| TfLiteStatus ValidatePreluOperator(DelegateData& delegateData, |
| TfLiteOpaqueContext* tfLiteContext, |
| const armnn::TensorInfo& inputInfo, |
| const armnn::TensorInfo& alphaInfo, |
| const armnn::TensorInfo& outputInfo) |
| { |
| bool isSupported = false; |
| auto validateFunc = [&](const armnn::TensorInfo& outputInfo, bool& isSupported) |
| { |
| FORWARD_LAYER_OPAQUE_SUPPORT_FUNC("PRELU", |
| tfLiteContext, |
| IsPreluSupported, |
| delegateData.m_Backends, |
| isSupported, |
| armnn::BackendId(), |
| inputInfo, |
| alphaInfo, |
| outputInfo); |
| }; |
| |
| validateFunc(outputInfo, isSupported); |
| return isSupported ? kTfLiteOk : kTfLiteError; |
| } |
| |
| TfLiteStatus VisitPreluOperator(DelegateData& delegateData, |
| TfLiteOpaqueContext* tfLiteContext, |
| TfLiteOpaqueNode* tfLiteNode, |
| int nodeIndex, |
| int32_t operatorCode) |
| { |
| TF_LITE_ENSURE_STATUS(ValidateNumInputs(tfLiteContext, tfLiteNode, 2, nodeIndex)); |
| TF_LITE_ENSURE_STATUS(ValidateNumOutputs(tfLiteContext, tfLiteNode, 1, nodeIndex)); |
| |
| // Gather input indices and use to get input tensor. |
| int numInputs = 0; |
| const int* inputTensors; |
| if (TfLiteOpaqueNodeInputs(tfLiteNode, &inputTensors, &numInputs) != kTfLiteOk) |
| { |
| TF_LITE_OPAQUE_MAYBE_KERNEL_LOG( |
| tfLiteContext, |
| "TfLiteArmnnOpaqueDelegate: Unable to gather input tensor indices from node #%d: ", |
| nodeIndex); |
| return kTfLiteError; |
| } |
| |
| const TfLiteOpaqueTensor* tfLiteInputTensor = TfLiteOpaqueContextGetOpaqueTensor(tfLiteContext, inputTensors[0]); |
| if (!IsValid(tfLiteContext, tfLiteInputTensor, operatorCode, nodeIndex)) |
| { |
| return kTfLiteError; |
| } |
| |
| const TfLiteOpaqueTensor* tfLiteAlphaTensor = TfLiteOpaqueContextGetOpaqueTensor(tfLiteContext, inputTensors[1]); |
| if (!IsValid(tfLiteContext, tfLiteAlphaTensor, operatorCode, nodeIndex)) |
| { |
| return kTfLiteError; |
| } |
| |
| // Gather output indices and use to get output tensors. |
| int numOutputs = 0; |
| const int* outputTensors; |
| if (TfLiteOpaqueNodeOutputs(tfLiteNode, &outputTensors, &numOutputs) != kTfLiteOk) |
| { |
| TF_LITE_OPAQUE_MAYBE_KERNEL_LOG( |
| tfLiteContext, |
| "TfLiteArmnnOpaqueDelegate: Unable to gather output tensor indices from node #%d: ", |
| nodeIndex); |
| return kTfLiteError; |
| } |
| |
| const TfLiteOpaqueTensor* tfLiteOutputTensor = TfLiteOpaqueContextGetOpaqueTensor(tfLiteContext, outputTensors[0]); |
| if (!IsValid(tfLiteContext, tfLiteOutputTensor, operatorCode, nodeIndex)) |
| { |
| return kTfLiteError; |
| } |
| |
| const armnn::TensorInfo& inputTensorInfo = GetTensorInfoForTfLiteOpaqueTensor(tfLiteInputTensor); |
| const armnn::TensorInfo& alphaTensorInfo = GetTensorInfoForTfLiteOpaqueTensor(tfLiteAlphaTensor); |
| const armnn::TensorInfo& outputTensorInfo = GetTensorInfoForTfLiteOpaqueTensor(tfLiteOutputTensor, true); |
| |
| if (!delegateData.m_Network) |
| { |
| return ValidatePreluOperator(delegateData, |
| tfLiteContext, |
| inputTensorInfo, |
| alphaTensorInfo, |
| outputTensorInfo); |
| } |
| |
| armnn::IConnectableLayer* preluLayer = delegateData.m_Network->AddPreluLayer(); |
| ARMNN_ASSERT(preluLayer != nullptr); |
| |
| bool isConstantAlpha = IsConstantTensor(tfLiteAlphaTensor); |
| |
| // Add constant layer for constant alpha |
| if (isConstantAlpha) |
| { |
| auto constAlphaTensor = armnn::ConstTensor(alphaTensorInfo, TfLiteOpaqueTensorData(tfLiteAlphaTensor)); |
| |
| armnn::IConnectableLayer* constLayer = delegateData.m_Network->AddConstantLayer(constAlphaTensor); |
| ARMNN_ASSERT(constLayer != nullptr); |
| |
| constLayer->GetOutputSlot(0).SetTensorInfo(alphaTensorInfo); |
| constLayer->GetOutputSlot(0).Connect(preluLayer->GetInputSlot(1)); |
| } |
| |
| armnn::IOutputSlot& outputSlot = preluLayer->GetOutputSlot(0); |
| outputSlot.SetTensorInfo(outputTensorInfo); |
| |
| // Connect |
| return Connect(preluLayer, tfLiteContext, tfLiteNode, delegateData); |
| } |
| |
| } // namespace armnnOpaqueDelegate |