chore: import upstream snapshot with attribution

2026-07-13 12:47:05 +08:00
commit 4f3b7da785
7394 changed files with 2005594 additions and 0 deletions
@@ -0,0 +1,140 @@
+/* ******************************************************************************
+ *
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Apache License, Version 2.0 which is available at
+ * https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  See the NOTICE file distributed with this work for additional
+ *  information regarding copyright ownership.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ******************************************************************************/
+
+//
+//  @author George A. Shulinok <sgazeos@gmail.com>
+//
+
+#include <system/op_boilerplate.h>
+#if NOT_EXCLUDED(OP_adjust_contrast)
+
+#include <array/NDArrayFactory.h>
+#include <ops/declarable/headers/parity_ops.h>
+
+namespace sd {
+namespace ops {
+
+////////////////////////////////////////////////////////////////////
+CONFIGURABLE_OP_IMPL(adjust_contrast, 1, 1, true, 0, 0) {
+  auto input = INPUT_VARIABLE(0);
+  auto output = OUTPUT_VARIABLE(0);
+
+  // just skip op if input is empty
+  if (input->isEmpty()) return Status::OK;
+
+  REQUIRE_TRUE(block.numT() > 0 || block.width() > 1, 0, "ADJUST_CONTRAST: Scale factor required");
+  REQUIRE_TRUE(input->rankOf() > 2, 0, "ADJUST_CONTRAST: op expects rank of input array to be >= 3, but got %i instead",
+               input->rankOf());
+
+
+  NDArray* factor = nullptr;
+
+  if (block.width() > 1)
+    factor = INPUT_VARIABLE(1);
+  else {
+    factor = new NDArray(output->dataType(), block.launchContext());
+#ifdef HAS_DOUBLE
+    factor->p(0, static_cast<double>(T_ARG(0)));
+#elif defined(HAS_FLOAT32)
+    factor->p(0, static_cast<float>(T_ARG(0)));
+#else
+#error "No floating-point type available for adjust_contrast operation"
+#endif
+  }
+
+  // fill up axes vector first
+  std::vector<LongType> axes(input->rankOf() - 1);
+  for (size_t i = 0; i < axes.size(); ++i) axes[i] = i;
+  // mean as reduction for last dimension set
+  auto* mean = input->reduceAlongDimension(reduce::Mean, &axes);
+  auto* part1 = (*input) - (*mean);
+  auto* part2 = (*part1) * (*factor);
+  delete part1;
+  auto* part3 = (*part2) + (*mean);
+  delete part2;
+  delete mean;
+  // this is contrast calculation
+  output->assign(part3);
+  delete part3;
+
+  return Status::OK;
+}
+
+DECLARE_TYPES(adjust_contrast) {
+  getOpDescriptor()->setAllowedInputTypes(ANY)->setAllowedOutputTypes({ALL_FLOATS})->setSameMode(true);
+}
+
+////////////////////////////////////////////////////////////////////
+CONFIGURABLE_OP_IMPL(adjust_contrast_v2, 1, 1, true, 0, 0) {
+  auto input = INPUT_VARIABLE(0);
+  auto output = OUTPUT_VARIABLE(0);
+  // just skip op if input is empty
+  if (input->isEmpty()) return Status::OK;
+
+  REQUIRE_TRUE(input->rankOf() > 2, 0,
+               "ADJUST_CONTRAST_V2: op expects rank of input array to be >= 3, but got %i instead", input->rankOf());
+  REQUIRE_TRUE(block.numT() > 0 || block.width() > 1, 0, "ADJUST_CONTRAST_V2: Scale factor required");
+
+  NDArray* factor = nullptr;
+  auto size = input->sizeAt(-2) * input->sizeAt(-3);
+  auto channels = input->sizeAt(-1);
+  int sizeChannels = sd::math::sd_max<int>(1,size * channels);
+  auto batch = input->lengthOf() / sizeChannels;
+  std::vector<LongType> shape = {batch, size, channels};
+  auto* input3D = input->reshape(input->ordering(), shape);
+  auto* output3D = input->reshape(input->ordering(), shape);
+
+  if (block.width() > 1) {
+    factor = INPUT_VARIABLE(1);
+  }
+  else {
+    factor = new NDArray(output->dataType(), block.launchContext());
+#ifdef HAS_DOUBLE
+    factor->p(0, static_cast<double>(T_ARG(0)));
+#elif defined(HAS_FLOAT32)
+    factor->p(0, static_cast<float>(T_ARG(0)));
+#else
+#error "No floating-point type available for adjust_contrast_v2 operation"
+#endif
+  }
+
+  std::vector<LongType> axes({1});  // dim 1 of pseudoresult
+  // mean as reduction for last dimension set over size (dim 1) of result3D
+  auto* mean = input3D->reduceAlongDimension(reduce::Mean, &axes);
+  // result as (x - mean) * factor + mean
+  auto* temp = input3D->ulike();
+  std::vector<LongType> zeroTwo = {0, 2};
+  input3D->applyBroadcast(broadcast::Subtract,&zeroTwo, mean, temp);
+  temp->applyScalarArr(scalar::Multiply, factor, temp);
+  temp->applyBroadcast(broadcast::Add, &zeroTwo, mean, output3D);
+  output->assign(output3D);
+  delete temp;
+  delete mean;
+  delete input3D;
+  delete output3D;
+  return Status::OK;
+}
+
+DECLARE_TYPES(adjust_contrast_v2) {
+  getOpDescriptor()->setAllowedInputTypes({ALL_FLOATS})->setAllowedOutputTypes({ALL_FLOATS})->setSameMode(true);
+}
+
+}  // namespace ops
+}  // namespace sd
+
+#endif