[OPENCL] add pixel_shuffle operator, test=develop (#3806)

lite/operators/CMakeLists.txt

@@ -111,6 +111,7 @@ add_operator(distribute_fpn_proposals_op_lite extra SRCS distribute_fpn_proposal
 add_operator(crf_decoding_op_lite extra SRCS crf_decoding_op.cc DEPS ${op_DEPS})
 add_operator(ctc_align_op_lite extra SRCS ctc_align_op.cc DEPS ${op_DEPS})
 add_operator(max_pool_with_index_op extra SRCS max_pool_with_index_op.cc DEPS ${op_DEPS})
+add_operator(pixel_shuffle_op extra SRCS pixel_shuffle_op.cc DEPS ${op_DEPS})
 
 # for OCR specific
 add_operator(while_op extra SRCS while_op.cc DEPS ${op_DEPS})

lite/operators/pixel_shuffle_op.cc

+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// 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.
+
+#include "lite/operators/pixel_shuffle_op.h"
+#include "lite/core/op_registry.h"
+
+namespace paddle {
+namespace lite {
+namespace operators {
+
+bool PixelShuffleOpLite::CheckShape() const {
+  CHECK_OR_FALSE(param_.x);
+  CHECK_OR_FALSE(param_.output);
+  CHECK_OR_FALSE(param_.upscale_factor);
+  const auto x_dims = param_.x->dims();
+  const auto upscale_factor = param_.upscale_factor;
+  CHECK_EQ_OR_FALSE(x_dims[1] % (upscale_factor * upscale_factor), 0);
+  return true;
+}
+
+bool PixelShuffleOpLite::InferShapeImpl() const {
+  const auto x_dims = param_.x->dims();
+  const auto upscale_factor = param_.upscale_factor;
+  auto output_dims = x_dims;
+  output_dims[0] = x_dims[0];
+  output_dims[1] = x_dims[1] / (upscale_factor * upscale_factor);
+  output_dims[2] = x_dims[2] * upscale_factor;
+  output_dims[3] = x_dims[3] * upscale_factor;
+  param_.output->Resize(output_dims);
+  return true;
+}
+
+bool PixelShuffleOpLite::AttachImpl(const cpp::OpDesc& opdesc,
+                                    lite::Scope* scope) {
+  auto input = opdesc.Input("X").front();
+  auto out = opdesc.Output("Out").front();
+
+  param_.x = scope->FindVar(input)->GetMutable<lite::Tensor>();
+  param_.output = scope->FindVar(out)->GetMutable<lite::Tensor>();
+
+  if (opdesc.HasAttr("upscale_factor")) {
+    param_.upscale_factor = opdesc.GetAttr<int>("upscale_factor");
+  }
+
+  return true;
+}
+
+}  // namespace operators
+}  // namespace lite
+}  // namespace paddle
+
+REGISTER_LITE_OP(pixel_shuffle, paddle::lite::operators::PixelShuffleOpLite);

lite/operators/pixel_shuffle_op.h

+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// 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.
+
+#pragma once
+
+#include <string>
+#include <vector>
+#include "lite/core/op_lite.h"
+
+namespace paddle {
+namespace lite {
+namespace operators {
+
+class PixelShuffleOpLite : public OpLite {
+ public:
+  PixelShuffleOpLite() {}
+  explicit PixelShuffleOpLite(const std::string &op_type) : OpLite(op_type) {}
+
+  bool CheckShape() const override;
+
+  bool InferShapeImpl() const override;
+
+  bool AttachImpl(const cpp::OpDesc &opdesc, lite::Scope *scope) override;
+
+  void AttachKernel(KernelBase *kernel) override { kernel->SetParam(param_); }
+  std::string DebugString() const override { return "pixel_shuffle"; }
+
+ private:
+  mutable PixelShuffleParam param_;
+};
+
+}  // namespace operators
+}  // namespace lite
+}  // namespace paddle