wehub-resource-sync
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
//
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// TorchFlip.cpp
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// MNNConverter
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//
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// Created by MNN on 2022/03/02.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include "MNN_generated.h"
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#include "TorchExtraManager.hpp"
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#include "logkit.h"
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namespace MNN {
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namespace Express {
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class TorchFlipTransform : public TorchExtraManager::Transform {
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public:
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virtual EXPRP onExecute(EXPRP expr) const override {
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auto op = expr->get();
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auto extra = op->main_as_Extra();
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MNN_ASSERT(nullptr != extra);
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auto attr = extra->attr();
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int dim = 1;
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if (nullptr != attr) {
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for (int i = 0; i < attr->size(); ++i) {
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auto att = attr->GetAs<Attribute>(i);
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auto key = att->key()->str();
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if ("dims" == key) {
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dim = att->i();
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}
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}
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}
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auto input = expr->inputs()[0];
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auto end = _Shape(input);
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auto begin = _ZerosLike(end);
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auto dims = _Scalar(dim);
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auto index = _Add(dims, _Multiply(_Rank(input), _Less(dims, _Scalar(0))));
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auto strided = _ScatterNd(_Unsqueeze(index, {0}), _Unsqueeze(_Scalar(-1), {0}), _Shape(end), begin + _Scalar(1));
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auto newExpr = _StridedSlice(input, begin, end, strided, 31, 31, 0, 0, 0)->expr().first;
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newExpr->setName(expr->name());
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return newExpr;
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}
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};
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static auto gRegister = []() {
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TorchExtraManager::get()->insert("flip", std::shared_ptr<TorchExtraManager::Transform>(new TorchFlipTransform));
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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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