87 lines
3.2 KiB
C++
87 lines
3.2 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author raver119@gmail.com
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//
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#include <ops/declarable/helpers/helpers.h>
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namespace nd4j {
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namespace ops {
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namespace helpers {
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//////////////////////////////////////////////////////////////////////
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void dilation2d(nd4j::LaunchContext* context, NDArray *input, NDArray *weights, NDArray *output, const int sH, const int sW, const int pH, const int pW, const int dH, const int dW);
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//////////////////////////////////////////////////////////////////////
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FORCEINLINE Nd4jStatus outputSize(nd4j::LaunchContext * context, const int inSize, const int k, const int d, const int s, bool isSameMode, int *outSize, int *padding_before, int *padding_after) {
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if (s <= 0)
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return Status::THROW("Dilation2D: Stride must be > 0");
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if (d < 1)
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return Status::THROW("Dilation2D: Dilation rate must be >= 1");
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int kEff = (k - 1) * d + 1;
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if (isSameMode) {
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*outSize = (inSize + s - 1) / s;
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const int padding_needed = nd4j::math::nd4j_max<int>(0, (*outSize - 1) * s + kEff -inSize);
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*padding_before = padding_needed / 2;
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*padding_after = padding_needed - *padding_before;
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} else {
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*outSize = (inSize - kEff + s) / s;
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*padding_before = *padding_after = 0;
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}
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if (*outSize < 0)
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return Status::THROW("Dilation2D: outSize has negative value");
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return Status::OK();
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}
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//////////////////////////////////////////////////////////////////////
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FORCEINLINE Nd4jStatus dilation_hw(nd4j::LaunchContext * context, Nd4jLong *in, Nd4jLong *wh, std::vector<int> &strides, std::vector<int> &rates, bool isSameMode, int *sH, int *sW, int *pH, int *pW, int *dH, int *dW, int *oH, int *oW) {
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const int iH = shape::sizeAt(in, 1);
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const int iW = shape::sizeAt(in, 2);
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const int iC = shape::sizeAt(in, 3);
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*sH = strides[1];
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*sW = strides[2];
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*dH = rates[1];
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*dW = rates[2];
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const int kH = shape::sizeAt(wh, 0);
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const int kW = shape::sizeAt(wh, 1);
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const int kHeff = kH + (kH - 1) * (*dH - 1);
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const int kWeff = kW + (kW - 1) * (*dW - 1);
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int padding_after_unusedA, padding_after_unusedB;
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if (outputSize(context, iH, kHeff, 1, *sH, isSameMode, oH, pH, &padding_after_unusedA) != Status::OK())
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return Status::THROW("Dilation2D: bad height");
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if (outputSize(context, iW, kWeff, 1, *sW, isSameMode, oW, pW, &padding_after_unusedA) != Status::OK())
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return Status::THROW("Dilation2D: bad width");
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return Status::OK();
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}
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}
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}
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} |