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ReshapeImpl.cpp 1.9 KiB
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/********************************************************************************
 * Copyright (c) 2023 CEA-List
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 ********************************************************************************/

#include <cassert>
#include <chrono>  // std::chrono::milliseconds
#include <numeric> // std::accumulate
#include <thread>  // std::this_thread::sleep_for
#include <vector>

#include "aidge/operator/Reshape.hpp"
#include "aidge/utils/Types.h"

#include "aidge/backend/cpu/operator/ReshapeImpl.hpp"
#include "aidge/backend/cpu/operator/ReshapeImpl_forward_kernels.hpp"

Aidge::NbElts_t Aidge::ReshapeImpl_cpu::getNbRequiredProtected(const Aidge::IOIndex_t /*inputIdx*/) const {
    // this implementation can be in-place
    return 0;
}

void Aidge::ReshapeImpl_cpu::forward() {
    assert(mOp.getInput(0) && "missing input #0");
    assert(mOp.getInput(1) && "missing input #1");
    assert(mOp.getInput(1)->nbDims() == 1 && "input #1 must be a 1D array");

    std::size_t outputSize = 1;
    
    int* shape = static_cast<int*>(mOp.getInput(1)->getImpl()->rawPtr());
    for(std::size_t i= 0; i<mOp.getInput(1)->size(); ++i)
    {
        assert(shape[i]>0 && "all input #1 elements must be >0");
        outputSize *= shape[i];
    }
    assert((mOp.getInput(0)->size() == outputSize) &&
           "the shape given in input #1 must give the same size of input #0");

    // Find the correct kernel type
    auto kernelFunc = Registrar<ReshapeImplForward_cpu>::create({
        mOp.getInput(0)->dataType(),
        mOp.getOutput(0)->dataType()});

    // Call kernel
    kernelFunc(mOp.getInput(0)->size(),
               mOp.getInput(0)->getImpl()->rawPtr(),
               mOp.getOutput(0)->getImpl()->rawPtr());
}