GPU implementations of space_to_depth and depth_to_space.

Change: 117493386

1 files changed, 44 insertions, 0 deletions

diff --git a/tensorflow/core/kernels/depthtospace_op.h b/tensorflow/core/kernels/depthtospace_op.h
new file mode 100644
index 0000000000..60c347d985
--- /dev/null
+++ b/tensorflow/core/kernels/depthtospace_op.h
@@ -0,0 +1,44 @@
+/* Copyright 2015 Google Inc. 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.
+==============================================================================*/
+
+#ifndef TENSORFLOW_CORE_KERNELS_DEPTHTOSPACE_OP_H_
+#define TENSORFLOW_CORE_KERNELS_DEPTHTOSPACE_OP_H_
+// Functor definition for XentOp, must be compilable by nvcc.
+
+#include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"
+#include "tensorflow/core/framework/tensor_types.h"
+
+namespace tensorflow {
+namespace functor {
+
+// Functor used by DepthToSpaceOp to do the computations.
+template <typename Device, typename T>
+struct DepthToSpaceOpFunctor {
+  // Implements the depth to space conversion.
+  //
+  // input: 4-D input tensor.
+  // block_size: block size for the conversion.
+  // output: 4-D output tensor.
+  //
+  // The dimensions of the tensors are guaranteed to be correct when the
+  // functor is called.
+  void operator()(const Device& d, typename TTypes<T, 4>::ConstTensor input,
+                  int block_size, typename TTypes<T, 4>::Tensor output);
+};
+
+}  // namespace functor
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_CORE_KERNELS_DEPTHTOSPACE_OP_H_