wehub-resource-sync
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/* ******************************************************************************
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*
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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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* See the NOTICE file distributed with this work for additional
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* information regarding copyright ownership.
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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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// @author Yurii Shyrma (iuriish@yahoo.com)
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//
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#include <execution/Threads.h>
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#include <helpers/ConstantTadHelper.h>
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#include <ops/declarable/helpers/adjust_hue.h>
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#include <ops/declarable/helpers/adjust_saturation.h>
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namespace sd {
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namespace ops {
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namespace helpers {
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template <typename T>
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static void adjustSaturation_(NDArray *input, NDArray *factorScalarArr, NDArray *output, const sd::LongType dimC) {
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const T factor = factorScalarArr->e<T>(0);
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const int rank = input->rankOf();
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const T *x = input->bufferAsT<T>();
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T *z = output->bufferAsT<T>();
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if (dimC == rank - 1 && input->ews() == 1 && output->ews() == 1 && input->ordering() == 'c' &&
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output->ordering() == 'c') {
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auto func = PRAGMA_THREADS_FOR {
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for (auto i = start; i < stop; i += increment) {
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T h, s, v;
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rgbToHsv<T>(x[i], x[i + 1], x[i + 2], h, s, v);
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s *= factor;
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if (s > 1.f)
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s = 1.f;
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else if (s < 0.f)
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s = 0.f;
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hsvToRgb<T>(h, s, v, z[i], z[i + 1], z[i + 2]);
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}
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};
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samediff::Threads::parallel_for(func, 0, input->lengthOf(), 3);
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} else {
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auto packX = sd::ConstantTadHelper::getInstance().tadForDimensions(input->shapeInfo(), dimC);
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auto packZ = sd::ConstantTadHelper::getInstance().tadForDimensions(output->shapeInfo(), dimC);
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const sd::LongType numOfTads = packX->numberOfTads();
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const sd::LongType xDimCstride = input->stridesOf()[dimC];
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const sd::LongType zDimCstride = output->stridesOf()[dimC];
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auto func = PRAGMA_THREADS_FOR {
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for (auto i = start; i < stop; i++) {
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const T *xTad = x + packX->platformOffsets()[i];
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T *zTad = z + packZ->platformOffsets()[i];
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T h, s, v;
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rgbToHsv<T>(xTad[0], xTad[xDimCstride], xTad[2 * xDimCstride], h, s, v);
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s *= factor;
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if (s > 1.f)
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s = 1.f;
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else if (s < 0.f)
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s = 0.f;
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hsvToRgb<T>(h, s, v, zTad[0], zTad[zDimCstride], zTad[2 * zDimCstride]);
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}
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};
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samediff::Threads::parallel_tad(func, 0, numOfTads);
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}
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}
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void adjustSaturation(sd::LaunchContext *context, NDArray *input, NDArray *factorScalarArr, NDArray *output,
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const sd::LongType dimC) {
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BUILD_SINGLE_SELECTOR(input->dataType(), adjustSaturation_, (input, factorScalarArr, output, dimC), SD_FLOAT_TYPES);
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}
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} // namespace helpers
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} // namespace ops
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} // namespace sd
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