272 lines
12 KiB
C++
272 lines
12 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, created on 19.01.18.
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// @author Yurii Shyrma (iuriish@yahoo.com)
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//
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#include <ops/declarable/helpers/s_t_b.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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template <typename T>
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static void batchToSpace_(const NDArray& input, NDArray& output, const uint cropBottom, const uint cropTop, const uint cropLeft, const uint cropRight) {
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// input [bS, H * blockSize, W * blockSize, iC]
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// output [bS, H * blockSize - cropBottom - cropTop, W * blockSize - cropLeft - cropRight, iC]
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// if (cropTop = cropBottom = cropRight = cropLeft = 0) shapes are the same
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// else:
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// oH -> [cropBottom, iH - cropTop]
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// oW -> [cropLeft, iH - cropRight]
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// xLen > zLen
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const T* x = input.bufferAsT<T>();
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T* z = output.bufferAsT<T>();
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const int rank = 4;
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const Nd4jLong* xShapeInfo = input.getShapeInfo();
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const Nd4jLong* zShapeInfo = output.getShapeInfo();
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const uint bS = xShapeInfo[1];
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const uint iH = xShapeInfo[2];
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const uint iW = xShapeInfo[3];
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const uint iC = xShapeInfo[4];
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// loop through output array
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PRAGMA_OMP_PARALLEL_FOR_SIMD_ARGS(collapse(4))
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for (uint b = 0; b < bS; ++b) {
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for (uint h = cropBottom; h < iH - cropTop; ++h) {
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for (uint w = cropLeft; w < iW - cropRight; ++w) {
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for (uint c = 0; c < iC; ++c) {
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const Nd4jLong xOffset = b * xShapeInfo[5] + h * xShapeInfo[6] + w * xShapeInfo[7] + c * xShapeInfo[8];
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const Nd4jLong zOffset = b * zShapeInfo[5] + (h - cropBottom) * zShapeInfo[6] + (w - cropLeft) * zShapeInfo[7] + c * zShapeInfo[8];
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z[zOffset] = x[xOffset];
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}
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}
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}
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}
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}
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BUILD_SINGLE_TEMPLATE(template void batchToSpace_, (const NDArray& input, NDArray& output, const uint cropBottom, const uint cropTop, const uint cropLeft, const uint cropRight), LIBND4J_TYPES);
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//////////////////////////////////////////////////////////////////////////
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void batchToSpace(nd4j::LaunchContext* context, const NDArray& input, NDArray& output, const uint cropBottom, const uint cropTop, const uint cropLeft, const uint cropRight, const uint blockSize) {
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// [bS*blockSize*blockSize, H/blockSize, W/blockSize, iC] is rearranged/permuted to [bS, oH, oW, iC]
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// oH = H - cropTop - cropBottom
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// oW = W - cropLeft - cropRight
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NDArray inputRearranged0 = input.reshape(input.ordering(), {blockSize, blockSize, output.sizeAt(0), input.sizeAt(1), input.sizeAt(2), input.sizeAt(3)});
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inputRearranged0.permutei({2, 3,0, 4,1, 5});
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if(input.lengthOf() == output.lengthOf())
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output.assign(inputRearranged0);
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else {
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NDArray inputRearranged1 = inputRearranged0.reshape(input.ordering(), {output.sizeAt(0), input.sizeAt(1) * blockSize, input.sizeAt(2) * blockSize, input.sizeAt(3)});
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BUILD_SINGLE_SELECTOR(input.dataType(), batchToSpace_, (inputRearranged1, output, cropBottom, cropTop, cropLeft, cropRight), LIBND4J_TYPES);
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}
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void spaceToBatch_(const NDArray& input, NDArray& output, const uint padBottom, const uint padTop, const uint padLeft, const uint padRight) {
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// input [bS, H * blockSize - padBottom - padTop, W * blockSize - padLeft - padRight, iC]
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// output [bs, H * blockSize, W * blockSize, iC]
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// if (padTop = padBottom = padRight = padLeft = 0) shapes are the same
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// else:
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// iH -> [padBottom, oH - padTop]
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// iW -> [padLeft, oW - padRight]
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// zLen > xLen
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const T* x = input.bufferAsT<T>();
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T* z = output.bufferAsT<T>();
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const int rank = 4;
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const Nd4jLong* xShapeInfo = input.getShapeInfo();
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const Nd4jLong* zShapeInfo = output.getShapeInfo();
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const uint bS = zShapeInfo[1];
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const uint oH = zShapeInfo[2];
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const uint oW = zShapeInfo[3];
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const uint iC = zShapeInfo[4];
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// loop through output array
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PRAGMA_OMP_PARALLEL_FOR_SIMD_ARGS(collapse(4))
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for (uint b = 0; b < bS; ++b) {
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for (uint h = 0; h < oH; ++h) {
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for (uint w = 0; w < oW; ++w) {
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for (uint c = 0; c < iC; ++c) {
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const Nd4jLong zOffset = b * zShapeInfo[5] + h * zShapeInfo[6] + w * zShapeInfo[7] + c * zShapeInfo[8];
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if(h >= padBottom && h < oH - padTop && w >= padLeft && w < oW - padRight) {
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const Nd4jLong xOffset = b * xShapeInfo[5] + (h - padBottom) * xShapeInfo[6] + (w - padLeft) * xShapeInfo[7] + c * xShapeInfo[8];
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z[zOffset] = x[xOffset];
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}
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else
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z[zOffset] = 0.f;
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}
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}
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}
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}
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}
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BUILD_SINGLE_TEMPLATE(template void spaceToBatch_, (const NDArray& input, NDArray& output, const uint padBottom, const uint padTop, const uint padLeft, const uint padRight), LIBND4J_TYPES);
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//////////////////////////////////////////////////////////////////////////
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void spaceToBatch(nd4j::LaunchContext* context, const NDArray& input, NDArray& output, const uint padBottom, const uint padTop, const uint padLeft, const uint padRight, const uint blockSize) {
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// [bS, iH, iW, iC] is rearranged/permuted to [bS*blockSize*blockSize, (iH + padBottom + padTop)/blockSize, (iW + padLeft + padRight)/blockSize, iC]
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NDArray outputRearranged0 = output.reshape(output.ordering(), {blockSize, blockSize, input.sizeAt(0), output.sizeAt(1), output.sizeAt(2), input.sizeAt(3)});
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outputRearranged0.permutei({2, 3,0, 4,1, 5});
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if(input.lengthOf() == output.lengthOf()) {
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outputRearranged0.assign(input);
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}
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else {
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NDArray outputRearranged1 = outputRearranged0.reshape(output.ordering(), {input.sizeAt(0), output.sizeAt(1) * blockSize, output.sizeAt(2) * blockSize, input.sizeAt(3)});
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BUILD_SINGLE_SELECTOR(input.dataType(), spaceToBatch_, (input, outputRearranged1, padBottom, padTop, padLeft, padRight), LIBND4J_TYPES);
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if(output.getBuffer() != outputRearranged1.getBuffer())
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outputRearranged0.assign(outputRearranged1);
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}
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}
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/*
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template <int N, bool B2S>
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struct SpaceToBatchHelper {
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template <typename T>
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static void run(T *ptrSpace, const Nd4jLong *space_shape, const Nd4jLong *space_strides, const Nd4jLong *block_shape, const Nd4jLong *pad_start, const Nd4jLong *block_offsets, T *ptrBatch, const Nd4jLong *batch_shape, const Nd4jLong *batch_strides) {
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for (int batch_pos = 0; batch_pos < batch_shape[0]; ++batch_pos) {
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const int space_pos = batch_pos * block_shape[0] + block_offsets[0] - pad_start[0];
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if (space_pos >= 0 && space_pos < space_shape[0]) {
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SpaceToBatchHelper<N - 1, B2S>::run(ptrSpace + space_pos * space_strides[0], space_shape + 1, space_strides + 1, block_shape + 1, pad_start + 1, block_offsets + 1, ptrBatch, batch_shape + 1, batch_strides + 1);
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} else {
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if (!B2S)
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for (int i = 0; i < batch_strides[0]; i++)
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ptrBatch[i] = (T) 0.f;
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}
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ptrBatch += batch_strides[0];
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}
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}
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};
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template <bool B2S>
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struct SpaceToBatchHelper<0, B2S> {
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template <typename T>
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static void run(T *ptrSpace, const Nd4jLong *space_shape, const Nd4jLong *space_strides, const Nd4jLong *block_shape, const Nd4jLong *pad_start, const Nd4jLong *block_offsets, T *ptrBatch, const Nd4jLong *batch_shape, const Nd4jLong *batch_strides) {
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int str = batch_strides[-1];
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for (int i = 0; i < str; i++)
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if (B2S)
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ptrSpace[i] = ptrBatch[i];
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else
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ptrBatch[i] = ptrSpace[i];
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}
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};
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template <typename T, int NUM_BLOCK_DIMS, bool B2S>
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void _execute(nd4j::LaunchContext * context, void *vptrSpace, const Nd4jLong *space_shape, const Nd4jLong *space_strides, const Nd4jLong *block_shape, const Nd4jLong *pad_start, const Nd4jLong *block_offsets, void *vptrBatch, const Nd4jLong *batch_shape, const Nd4jLong *batch_strides) {
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auto ptrSpace = reinterpret_cast<T *>(vptrSpace);
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auto ptrBatch = reinterpret_cast<T *>(vptrBatch);
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SpaceToBatchHelper<NUM_BLOCK_DIMS, B2S>::run(ptrSpace, space_shape, space_strides, block_shape, pad_start, block_offsets, ptrBatch, batch_shape, batch_strides);
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};
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Nd4jStatus _spaceToBatch(nd4j::LaunchContext * context, int internal_block_dims, NDArray *input, NDArray *output, std::vector<Nd4jLong> &internal_input_shape, std::vector<Nd4jLong> &internal_output_shape, Nd4jLong *block_shape, Nd4jLong *paddings) {
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auto in = input->reshape('c', internal_input_shape);
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auto out = output->reshape('c', internal_output_shape);
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switch (internal_block_dims) {
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case 1:
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_prepare<1, false>(context, &in, &out, block_shape, paddings);
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break;
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case 2:
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_prepare<2, false>(context, &in, &out, block_shape, paddings);
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break;
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case 3:
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_prepare<3, false>(context, &in, &out, block_shape, paddings);
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break;
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case 4:
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_prepare<4, false>(context, &in, &out, block_shape, paddings);
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break;
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default: {
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return Status::THROW("SpaceToBatch: Wrong number of internal_block_dims");
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}
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}
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return Status::OK();
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}
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Nd4jStatus _batchToSpace(nd4j::LaunchContext * context, int internal_block_dims, NDArray *input, NDArray *output, std::vector<Nd4jLong> &internal_input_shape, std::vector<Nd4jLong> &internal_output_shape, Nd4jLong *block_shape, Nd4jLong *crops) {
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auto in = input->reshape('c', internal_input_shape);
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auto out = output->reshape('c', internal_output_shape);
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switch (internal_block_dims) {
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case 1:
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_prepare<1, true>(context, &in, &out, block_shape, crops);
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break;
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case 2:
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_prepare<2, true>(context, &in, &out, block_shape, crops);
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break;
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case 3:
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_prepare<3, true>(context, &in, &out, block_shape, crops);
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break;
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case 4:
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_prepare<4, true>(context, &in, &out, block_shape, crops);
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break;
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default: {
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return Status::THROW("BatchToSpace: Wrong number of internal_block_dims");
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}
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}
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return Status::OK();
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}
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#define STB_DIM (0, 1),\
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(1, 2),\
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(2, 3),\
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(3, 4)
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#define STB_BOOL (0, false),\
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(1, true)
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BUILD_TRIPLE_TEMPLATE(template void _execute, (nd4j::LaunchContext * context, void *ptrSpace, const Nd4jLong *space_shape, const Nd4jLong *space_strides, const Nd4jLong *block_shape, const Nd4jLong *pad_start, const Nd4jLong *block_offsets, void *ptrBatch, const Nd4jLong *batch_shape, const Nd4jLong *batch_strides), LIBND4J_TYPES, STB_DIM, STB_BOOL);
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#undef STB_BOOL
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#undef STB_DIM
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*/
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}
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}
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} |