1 files changed, 54 insertions, 0 deletions
diff --git a/compiler/coco/core/include/coco/IR/FeatureLayout.h b/compiler/coco/core/include/coco/IR/FeatureLayout.h
new file mode 100644
index 000000000..63f02c8ba
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+++ b/compiler/coco/core/include/coco/IR/FeatureLayout.h
@@ -0,0 +1,54 @@
+/*
+ * 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.
+ */
+
+#ifndef __COCO_IR_FEATURE_LAYOUT_H__
+#define __COCO_IR_FEATURE_LAYOUT_H__
+
+#include "coco/IR/ElemID.h"
+#include "coco/IR/FeatureShape.h"
+
+namespace coco
+{
+
+/**
+ * @brief A FeatureLayout connects each feature index to a Bag element
+ *
+ * NOTE FeatureLayout is an immutable interface
+ */
+struct FeatureLayout
+{
+  struct ID
+  {
+    virtual ~ID() = default;
+  };
+
+  virtual ~FeatureLayout() = default;
+
+  virtual const ID *id(void) const = 0;
+
+  virtual const FeatureShape &shape(void) const = 0;
+
+  uint32_t batch(void) const { return shape().batch(); }
+  uint32_t depth(void) const { return shape().depth(); }
+  uint32_t height(void) const { return shape().height(); }
+  uint32_t width(void) const { return shape().width(); }
+
+  virtual ElemID at(uint32_t b, uint32_t ch, uint32_t row, uint32_t col) const = 0;
+};
+
+} // namespace coco
+
+#endif // __COCO_IR_FEATURE_LAYOUT_H__