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/**
* Copyright (c) 2016-present, Facebook, Inc.
*
* 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 "upsample_nearest_op.h"
#ifdef USE_MKLDNN
#include "caffe2/ideep/operators/operator_fallback_ideep.h"
#include "caffe2/ideep/utils/ideep_operator.h"
#endif
namespace caffe2 {
#ifdef USE_MKLDNN
REGISTER_IDEEP_OPERATOR(
UpsampleNearest,
IDEEPFallbackOp<UpsampleNearestOp<float, CPUContext>>);
#endif
REGISTER_CPU_OPERATOR(UpsampleNearest, UpsampleNearestOp<float, CPUContext>);
REGISTER_CPU_OPERATOR(
UpsampleNearestGradient,
UpsampleNearestGradientOp<float, CPUContext>);
OPERATOR_SCHEMA(UpsampleNearest)
.NumInputs(1)
.NumOutputs(1)
.SetDoc(R"DOC(
Nearest neighbor upsampling operation. Implementation taken from THCUNN.
)DOC")
.Arg(
"scale",
"(int) default 2; integer upsampling factor.")
.Input(
0,
"X",
"4D feature map input of shape (N, C, H, W).")
.Output(
0,
"Y",
"4D feature map of shape (N, C, scale * H, scale * W); Values are "
"neareast neighbor samples from X.");
OPERATOR_SCHEMA(UpsampleNearestGradient)
.NumInputs(2)
.NumOutputs(1)
.Input(
0,
"X",
"See UpsampleNearest.")
.Input(
1,
"dY",
"Gradient of forward output 0 (Y).")
.Output(
0,
"dX",
"Gradient of forward input 0 (X).");
class GetUpsampleNearestGradient : public GradientMakerBase {
using GradientMakerBase::GradientMakerBase;
vector<OperatorDef> GetGradientDefs() override {
return SingleGradientDef(
"UpsampleNearestGradient",
"",
vector<string>{I(0), GO(0)},
vector<string>{GI(0)});
}
};
REGISTER_GRADIENT(UpsampleNearest, GetUpsampleNearestGradient);
} // namespace caffe2
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