116 lines
4.8 KiB
C++
116 lines
4.8 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 Shyrma Yurii (iuriish@yahoo.com), created on 06.11.2017.
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//
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#include <op_boilerplate.h>
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#if NOT_EXCLUDED(OP_pad)
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#include <ops/declarable/CustomOperations.h>
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#include<ops/declarable/helpers/transforms.h>
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#include <numeric>
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namespace nd4j {
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namespace ops {
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//////////////////////////////////////////////////////////////////////////
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CUSTOM_OP_IMPL(pad, 2, 1, false, 0, 1) {
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auto input = INPUT_VARIABLE(0);
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auto paddings = INPUT_VARIABLE(1);
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auto output = OUTPUT_VARIABLE(0);
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const int rank = input->rankOf();
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// input validation
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std::string expectedPaddingsShape = ShapeUtils::shapeAsString({rank, 2});
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std::string currentPaddingsShape = ShapeUtils::shapeAsString(paddings);
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REQUIRE_TRUE(expectedPaddingsShape == currentPaddingsShape, 0, "PAD op: wrong shape of paddings array, expected is %s, but got %s instead !", expectedPaddingsShape.c_str(), currentPaddingsShape.c_str());
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NDArray padValue(input->dataType(), block.launchContext());
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// in case of REFLECT and SYMMETRIC modes paddings must obey additional shape requirements
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if (INT_ARG(0) == 0) { // CONSTANT mode
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if(block.width() > 2) {
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REQUIRE_TRUE(input->dataType() == INPUT_VARIABLE(2)->dataType(), 0, "PAD op: data types of input and padValue arrays should be the same but got %i and %i correspondingly !", input->dataType(), INPUT_VARIABLE(2)->dataType());
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padValue.assign(INPUT_VARIABLE(2)->e(0));
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}
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else if (!block.getTArguments()->empty())
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padValue = T_ARG(0);
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}
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else if(INT_ARG(0) == 1) { // REFLECT mode
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for(int dim=0; dim < rank; ++dim)
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REQUIRE_TRUE(paddings->e<Nd4jLong>(dim,0) <= (input->shapeOf()[dim]-1) && paddings->e<Nd4jLong>(dim,1) <= (input->shapeOf()[dim]-1), 0, "PAD op: wrong content of paddings array for REFLECT mode !");
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}
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if(INT_ARG(0) == 2) { // SYMMETRIC mode
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for(int dim=0; dim < rank; ++dim)
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REQUIRE_TRUE(paddings->e<Nd4jLong>(dim,0) <= input->shapeOf()[dim] && paddings->e<Nd4jLong>(dim,1) <= input->shapeOf()[dim], 0, "PAD op: wrong content of paddings array for SYMMETRIC mode !");
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}
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// CONSTANT->0, REFLECT->1, SYMMETRIC->2
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REQUIRE_TRUE(INT_ARG(0) >= 0 && INT_ARG(0) <= 2, 0, "PAD op: unknown padding mode, there are only three possible legal values -> 0,1,2, but got %i instead !", INT_ARG(0));
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// std::vector<int> dimensions(input->rankOf());
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// std::iota(dimensions.begin(), dimensions.end(), 0); // fill with 0, 1, ... rank-1
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// helpers::recursiveLoopForPad(INT_ARG(0), *input, *paddings, *output, dimensions, 0, 0, 0, padValue);
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helpers::pad(block.launchContext(), INT_ARG(0), *input, *paddings, *output, padValue);
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return Status::OK();
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}
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DECLARE_TYPES(pad) {
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getOpDescriptor()
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->setAllowedInputTypes(0, nd4j::DataType::ANY)
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->setAllowedInputTypes(1, {DataType::INT32, DataType::INT64}) // INT32 with TF
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// ->setAllowedInputTypes(1, {DataType::INT32, DataType::INT64}) // INT32 with TF, but used also INT64 due long shapes
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->setSameMode(true);
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}
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DECLARE_SHAPE_FN(pad) {
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// check shape of paddings
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auto inputShapeInfo = inputShape->at(0);
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auto paddings = INPUT_VARIABLE(1);
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const int rank = inputShapeInfo[0];
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// paddings validation
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std::string expectedPaddingsShape = ShapeUtils::shapeAsString({rank, 2});
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std::string currentPaddingsShape = ShapeUtils::shapeAsString(paddings);
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REQUIRE_TRUE(expectedPaddingsShape == currentPaddingsShape, 0, "PAD op: wrong shape of paddings array, expected is %s, but got %s instead !", expectedPaddingsShape.c_str(), currentPaddingsShape.c_str());
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Nd4jLong* outShapeInfo = nullptr;
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ALLOCATE(outShapeInfo, block.getWorkspace(), shape::shapeInfoLength(rank), Nd4jLong);
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outShapeInfo[0] = rank;
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for(int i=1; i <= rank; ++i)
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outShapeInfo[i] = inputShapeInfo[i] + paddings->e<Nd4jLong>(i-1,0) + paddings->e<Nd4jLong>(i-1,1);
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ShapeUtils::updateStridesAndType(outShapeInfo, inputShapeInfo, shape::order(inputShapeInfo));
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ShapeDescriptor descriptor(outShapeInfo);
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RELEASE(outShapeInfo, block.getWorkspace());
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return SHAPELIST(ConstantShapeHelper::getInstance()->createShapeInfo(descriptor));
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}
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}
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}
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#endif |