From a962c2031508654b90ee7fd4842de645fba143cb Mon Sep 17 00:00:00 2001
From: =?utf8?q?=EB=B0=95=EC=A2=85=ED=98=84/=EB=8F=99=EC=9E=91=EC=A0=9C?=
 =?utf8?q?=EC=96=B4Lab=28SR=29/Staff=20Engineer/=EC=82=BC=EC=84=B1?=
 =?utf8?q?=EC=A0=84=EC=9E=90?= <jh1302.park@samsung.com>
Date: Tue, 6 Nov 2018 18:31:01 +0900
Subject: [PATCH] [enco.caffe] Introduce RawPadding and SpatialPadding (#2134)

This commit introduces RawPadding/SpatialPadding classes as the first
step toward unifying Padding-related routines.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>
---
 contrib/enco/frontend/caffe/src/Padding.h        | 69 ++++++++++++++++++++++++
 contrib/enco/frontend/caffe/src/Padding.test.cpp | 48 +++++++++++++++++
 2 files changed, 117 insertions(+)
 create mode 100644 contrib/enco/frontend/caffe/src/Padding.h
 create mode 100644 contrib/enco/frontend/caffe/src/Padding.test.cpp

diff --git a/contrib/enco/frontend/caffe/src/Padding.h b/contrib/enco/frontend/caffe/src/Padding.h
new file mode 100644
index 0000000..98b0181
--- /dev/null
+++ b/contrib/enco/frontend/caffe/src/Padding.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. 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.
+ */
+
+/**
+ * @file  Padding.h
+ * @brief This file declares padding-related data structures.
+ */
+#ifndef __PADDING_H__
+#define __PADDING_H__
+
+#include <cstdint>
+#include <vector>
+
+/**
+ * @brief A PaddingBase encapsulates common implementation for derived Padding classes
+ */
+template <typename Derived> class PaddingBase
+{
+public:
+  virtual ~PaddingBase() = default;
+
+public:
+  uint32_t count(void) const { return _values.size(); }
+
+public:
+  uint32_t &value(uint32_t n) { return _values.at(n); }
+  const uint32_t &value(uint32_t n) const { return _values.at(n); }
+
+public:
+  void resize(uint32_t len) { return _values.resize(len); }
+
+private:
+  std::vector<uint32_t> _values;
+};
+
+/**
+ * @brief A RawPadding denotes padding values stored in Caffe model
+ *
+ * @note There may be a mismatch between the number of values in RawPadding and spatial rank
+ */
+struct RawPadding final : public PaddingBase<RawPadding>
+{
+  // Empty
+};
+
+/**
+ * @brief A SpatialPadding denotes padding values for each "spatial" dimension
+ *
+ * @note The number of values in SpatialPadding should be matched with spatial rank
+ */
+struct SpatialPadding final : public PaddingBase<SpatialPadding>
+{
+  // Empty
+};
+
+#endif // __PADDING_H__
diff --git a/contrib/enco/frontend/caffe/src/Padding.test.cpp b/contrib/enco/frontend/caffe/src/Padding.test.cpp
new file mode 100644
index 0000000..cb2495d
--- /dev/null
+++ b/contrib/enco/frontend/caffe/src/Padding.test.cpp
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. 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 "Padding.h"
+
+#include <gtest/gtest.h>
+
+namespace
+{
+
+struct DerivedPadding : PaddingBase<DerivedPadding>
+{
+  // Empty
+};
+
+} // namespace
+
+TEST(PaddingTest, PaddingBase)
+{
+  DerivedPadding pad;
+
+  ASSERT_EQ(pad.count(), 0);
+
+  pad.resize(2);
+
+  ASSERT_EQ(pad.count(), 2);
+  ASSERT_EQ(pad.value(0), 0);
+  ASSERT_EQ(pad.value(1), 0);
+
+  pad.value(1) = 4;
+
+  ASSERT_EQ(pad.count(), 2);
+  ASSERT_EQ(pad.value(0), 0);
+  ASSERT_EQ(pad.value(1), 4);
+}
-- 
2.7.4