mirror of https://github.com/alibaba/MNN.git
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
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//
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// ShapeBroadcastTo.cpp
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// MNN
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//
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// Created by MNN on 2019/12/2.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include "core/Macro.h"
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#include "core/SizeComputer.hpp"
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#include "core/TensorUtils.hpp"
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namespace MNN {
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class ShapeBroadcastTo : public SizeComputer {
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virtual bool onComputeSize(const MNN::Op* op, const std::vector<Tensor*>& inputs,
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const std::vector<Tensor*>& outputs) const override {
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MNN_ASSERT(inputs.size() == 2);
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MNN_ASSERT(outputs.size() == 1);
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auto input = inputs[0];
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auto shape = inputs[1];
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auto output = outputs[0];
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const int dimension = input->dimensions();
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MNN_CHECK(shape->elementSize() == dimension, "input dimension does not match given shape!");
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output->buffer().dimensions = dimension;
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const int* shapeData = shape->host<int>();
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for (int i = 0; i < dimension; ++i) {
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const int dim = input->length(i);
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if (shapeData[i] != dim) {
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MNN_CHECK(dim == 1, "for each dimension pair they are either equal or one of them is one.");
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}
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output->setLength(i, shapeData[i]);
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}
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output->buffer().type = input->buffer().type;
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TensorUtils::getDescribe(output)->dimensionFormat = TensorUtils::getDescribe(input)->dimensionFormat;
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return true;
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}
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};
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REGISTER_SHAPE_INPUTS(ShapeBroadcastTo, OpType_BroadcastTo, {1});
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} // namespace MNN
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