mirror of https://github.com/alibaba/MNN.git
108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
//
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// OnnxClip.cpp
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// MNNConverter
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//
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// Created by MNN on 2020/06/20.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include <limits>
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#include "MNN_generated.h"
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#include "OnnxExtraManager.hpp"
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namespace MNN {
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namespace Express {
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template<typename T>
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static EXPRP clipConvert(EXPRP expr, bool supportRelu6) {
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auto inputs = expr->inputs();
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auto op = expr->get();
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auto extraParam = op->main_as_Extra();
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// auto dataType = expr->outputInfo(0)->type.code;
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auto maxValue = std::numeric_limits<T>().max();
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auto minValue = std::numeric_limits<T>().lowest();
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if (nullptr != extraParam->attr()) {
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const int attrSize = extraParam->attr()->size();
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for (int i = 0; i < attrSize; ++i) {
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auto attr = extraParam->attr()->GetAs<Attribute>(i);
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const auto& key = attr->key()->str();
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if (key == "max") {
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maxValue = attr->f();
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} else if (key == "min") {
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minValue = attr->f();
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}
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}
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}
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bool unknown_min_max = false;
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if (inputs.size() == 2 || (inputs.size() == 3 && inputs[1].get() != nullptr)) {
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auto minPtr = inputs[1]->readMap<T>();
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if (nullptr == minPtr) {
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unknown_min_max = true;
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} else {
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minValue = minPtr[0];
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}
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}
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if (inputs.size() == 3 && !unknown_min_max) {
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auto maxPtr = inputs[2]->readMap<T>();
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if (nullptr == maxPtr) {
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unknown_min_max = true;
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} else {
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maxValue = maxPtr[0];
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}
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}
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if (unknown_min_max || (!supportRelu6)) {
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auto minVar = _Scalar<T>(minValue);
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auto maxVar = _Scalar<T>(maxValue);
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if (inputs.size() >= 2 && inputs[1].get() != nullptr) {
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minVar = inputs[1];
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}
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if (inputs.size() >= 3) {
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maxVar = inputs[2];
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}
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auto res = _Minimum(_Maximum(inputs[0], minVar), maxVar);
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auto newExpr = res->expr().first;
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newExpr->setName(expr->name());
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return newExpr;
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}
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if(maxValue > std::numeric_limits<T>::max()) {
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maxValue = std::numeric_limits<T>().max();
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}
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if(minValue < std::numeric_limits<T>::lowest()) {
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minValue = std::numeric_limits<T>().lowest();
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}
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std::unique_ptr<OpT> newOp(new OpT);
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newOp->type = OpType_ReLU6;
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newOp->main.type = OpParameter_Relu6;
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newOp->main.value = new Relu6T;
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newOp->main.AsRelu6()->maxValue = maxValue;
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newOp->main.AsRelu6()->minValue = minValue;
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auto res = Expr::create(newOp.get(), {inputs[0]});
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res->setName(expr->name());
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return res;
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}
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class OnnxClipTransform : public OnnxExtraManager::Transform {
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public:
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virtual EXPRP onExecute(EXPRP expr) const override {
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auto inputs = expr->inputs();
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halide_type_code_t type = halide_type_int;
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for (int i = 0; i < inputs.size(); ++i) {
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if (nullptr != inputs[i] && nullptr != inputs[i]->getInfo()) {
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type = static_cast<halide_type_code_t>(inputs[i]->getInfo()->type.code);
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break;
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}
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}
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if (type == halide_type_float || inputs.size() == 1) {
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return clipConvert<float>(expr, true);
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}
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return clipConvert<int32_t>(expr, false);
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}
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};
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static auto gRegister = []() {
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OnnxExtraManager::get()->insert("Clip", std::shared_ptr<OnnxExtraManager::Transform>(new OnnxClipTransform));
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return true;
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}();
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} // namespace Express
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} // namespace MNN
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