142 lines
5.9 KiB
C++
142 lines
5.9 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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// Created by raver119 on 30.11.17.
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//
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#include <ops/declarable/helpers/col2im.h>
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#include <execution/Threads.h>
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namespace nd4j {
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namespace ops {
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namespace helpers {
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// [bS, iC, kH, kW, oH, oW] is de-convoluted to [bS, iC, iH, iW]
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template <typename T>
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void col2im_(nd4j::LaunchContext & context, const NDArray& input, NDArray& output, const int sH, const int sW, const int pH, const int pW, const int iH, const int iW, const int dH, const int dW) {
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auto imBuff = output.bufferAsT<T>();
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auto colBuff = input.bufferAsT<T>();
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auto imShapeBuffer = output.getShapeInfo();
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auto colShapeBuffer = input.getShapeInfo();
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auto colShape = shape::shapeOf(colShapeBuffer);
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auto colStride = shape::stride(colShapeBuffer);
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auto imShape = shape::shapeOf(imShapeBuffer);
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auto imStride = shape::stride(imShapeBuffer);
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const int bS = imShape[0];
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const int iC = imShape[1];
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const int kH = colShape[2];
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const int kW = colShape[3];
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const int oH = colShape[4];
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const int oW = colShape[5];
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const Nd4jLong colStride0 = colStride[0];
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const Nd4jLong colStride1 = colStride[1];
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const Nd4jLong colStride2 = colStride[2];
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const Nd4jLong colStride3 = colStride[3];
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const Nd4jLong colStride4 = colStride[4];
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const Nd4jLong colStride5 = colStride[5];
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const Nd4jLong imStride0 = imStride[0];
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const Nd4jLong imStride1 = imStride[1];
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const Nd4jLong imStride2 = imStride[2];
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const Nd4jLong imStride3 = imStride[3];
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memset(imBuff, 0, shape::length(imShapeBuffer) * sizeof(T));
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// if (shape::order(colShapeBuffer) == 'c' && shape::order(imShapeBuffer) == 'c' && shape::strideDescendingCAscendingF(colShapeBuffer) && shape::strideDescendingCAscendingF(imShapeBuffer)) {
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if (false) {
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auto func = PRAGMA_THREADS_FOR_2D {
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T *col, *im;
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int imRow, imCol;
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for (auto b = start_x; b < stop_x; b += inc_x) {
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for (auto c = start_y; c < stop_y; c += inc_y) {
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for (int kRow = 0; kRow < kH; ++kRow) {
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for (int kCol = 0; kCol < kW; ++kCol) {
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for (int colH = 0; colH < oH; ++colH) {
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for (int colW = 0; colW < oW; ++colW) {
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imRow = (-pH + kRow * dH) + colH * sH;
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imCol = (-pW + kCol * dW) + colW * sW;
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col = colBuff + b * colStride0 + c * colStride1 + kRow * colStride2 + kCol * colStride3 + colH * colStride4 + colW * colStride5;
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im = imBuff + b * imStride0 + c * imStride1 + imRow * imStride2 + imCol * imStride3;
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if (static_cast<unsigned>(imRow) < static_cast<unsigned>(iH) &&
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static_cast<unsigned>(imCol) < static_cast<unsigned>(iW))
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*im += *col;
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}
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}
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}
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}
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}
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}
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};
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samediff::Threads::parallel_for(func, 0, bS, 1, 0, iC, 1);
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}
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else {
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auto func = PRAGMA_THREADS_FOR {
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T *col, *im;
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for (auto b = start; b < stop; b++) {
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T *im0 = imBuff + b * imStride0;
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T *col4 = colBuff + b * colStride0;
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for (int colH = 0; colH < oH; ++colH, col4 += colStride4) {
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T *col5 = col4;
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for (int colW = 0; colW < oW; ++colW, col5 += colStride5) {
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T *col1 = col5;
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T *im1 = im0;
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for (int c = 0; c < iC; ++c, col1 += colStride1, im1 += imStride1) {
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int imRow = (-pH + colH * sH);
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T *col2 = col1;
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T *im2 = im1 + imRow * imStride2;
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for (int kRow = 0;
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kRow < kH; ++kRow, col2 += colStride2, imRow += dH, im2 += dH * imStride2) {
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int imCol = -pW + colW * sW;
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T *col3 = col2;
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T *im3 = im2 + imCol * imStride3;
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for (int kCol = 0;
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kCol < kW; ++kCol, col3 += colStride3, imCol += dW, im3 += dW * imStride3) {
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if (static_cast<unsigned>(imRow) < static_cast<unsigned>(iH) &&
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static_cast<unsigned>(imCol) < static_cast<unsigned>(iW))
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*im3 += *col3;
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}
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}
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}
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}
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}
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}
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};
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samediff::Threads::parallel_tad(func, 0, bS);
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}
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}
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void col2im(nd4j::LaunchContext & context, const NDArray& input, NDArray& output, const int sH, const int sW, const int pH, const int pW, const int iH, const int iW, const int dH, const int dW) {
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BUILD_SINGLE_SELECTOR(input.dataType(), col2im_, (context, input, output, sH, sW, pH, pW, iH, iW, dH, dW), FLOAT_TYPES);
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}
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}
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}
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}
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