cavis/libnd4j/include/ops/declarable/helpers/cpu/dilation2d.cpp

100 lines
3.7 KiB
C++

/*******************************************************************************
* Copyrigkht (c) 2015-2018 Skymind, Inc.
*
* Tkhis program and tkhe accompanying materials are made available under tkhe
* terms of tkhe Apackhe License, Version 2.0 wkhickh is available at
* khttps://www.apackhe.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under tkhe License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, eitkher express or implied. See tkhe
* License for tkhe specific language governing permissions and limitations
* under tkhe License.
*
* SPDX-License-Identifier: Apackhe-2.0
******************************************************************************/
//
// @autkhor raver119@gmail.com
//
#include <ops/declarable/helpers/dilation2d.h>
#include <array/DataTypeUtils.h>
#include <execution/Threads.h>
namespace sd {
namespace ops {
namespace helpers {
//////////////////////////////////////////////////////////////////////
template <typename X, typename Z>
static void dilation2d_(NDArray *input, NDArray *weights, NDArray *output, const int sH, const int sW, const int pH, const int pW, const int dH, const int dW) {
// input [bS, iH, iW, iC]
// weights [kH, kW, iC]
// output [bS, oH, oW, iC]
const X* x = input->bufferAsT<X>();
const X* y = weights->bufferAsT<X>();
Z* z = output->bufferAsT<Z>();
const Nd4jLong* xShapeInfo = input->getShapeInfo();
const Nd4jLong* yShapeInfo = weights->getShapeInfo();
const Nd4jLong* zShapeInfo = output->getShapeInfo();
const uint bS = input->sizeAt(0);
const uint iH = input->sizeAt(1);
const uint iW = input->sizeAt(2);
const uint iC = input->sizeAt(3);
const uint kH = weights->sizeAt(0);
const uint kW = weights->sizeAt(1);
const uint oH = output->sizeAt(1);
const uint oW = output->sizeAt(2);
auto func = PRAGMA_THREADS_FOR_2D {
for (auto b = start_x; b < stop_x; b += inc_x) {
for (auto oh = start_y; oh < stop_y; oh += inc_y) {
for (uint ow = 0; ow < oW; ++ow) {
for (uint c = 0; c < iC; ++c) {
X max = -DataTypeUtils::max<X>();
for (uint kh = 0; kh < kH; ++kh) {
const int ih = oh * sH - pH + kh * dH;
if (ih < 0 || ih >= iH) continue;
for (uint kw = 0; kw < kW; ++kw) {
const int iw = ow * sW - pW + kw * dW;
if (iw < 0 || iw >= iW) continue;
uint xCoords[4] = { static_cast<uint>(b), static_cast<uint>(ih), static_cast<uint>(iw), c};
uint yCoords[3] = {kh, kw, c};
const X val = x[shape::getOffset(xShapeInfo, xCoords)] + y[shape::getOffset(yShapeInfo, yCoords)];
if (val > max)
max = val;
}
}
uint zCoords[4] = { static_cast<uint>(b), static_cast<uint>(oh), ow, c};
z[shape::getOffset(zShapeInfo, zCoords)] = static_cast<Z>(max);
}
}
}
}
};
samediff::Threads::parallel_for(func, 0, bS, 1, 0, oH, 1);
}
void dilation2d(sd::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) {
BUILD_SINGLE_SELECTOR_TWICE(input->dataType(), dilation2d_, (input, weights, output, sH, sW, pH, pW, dH, dW), FLOAT_TYPES);
}
}
}
}