1 files changed, 91 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/convolution/common/padding.hpp b/src/core/NEON/kernels/convolution/common/padding.hpp
new file mode 100644
index 0000000000..397d902e29
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+++ b/src/core/NEON/kernels/convolution/common/padding.hpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2019 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#pragma once
+
+#include <cstddef>
+
+// Utilities for copying tensor tiles and adding/removing padding.
+namespace padding
+{
+
+/* Copy a tile and apply padding to the output copy.
+ */
+template <typename T>
+void copy_and_pad_tile(
+  const unsigned int tile_rows,
+  const unsigned int tile_cols,
+  const unsigned int n_channels,
+  const T * const inptr,
+  const unsigned int in_row_stride,
+  const unsigned int in_col_stride,
+  T* const outptr,
+  const unsigned int out_row_stride,
+  const unsigned int out_col_stride,
+  const unsigned int pad_top,
+  const unsigned int pad_left,
+  const unsigned int pad_bottom,
+  const unsigned int pad_right,
+  const T pad_value=static_cast<T>(0)
+);
+
+/** Copy a tile and remove padding elements in the output.
+ */
+template <unsigned int TileRows, unsigned int TileCols>
+class CopyCropped
+{
+  public:
+    static void execute(
+      size_t size,  // Amount of data to copy
+      const void *inptr,
+      size_t in_row_stride,
+      size_t in_col_stride,
+      void *outptr,
+      size_t out_row_stride,
+      size_t out_col_stride,
+      unsigned int pad_top,
+      unsigned int pad_left,
+      unsigned int pad_bottom,
+      unsigned int pad_right
+    );
+};
+
+template <typename T>
+void crop_and_copy_tile(
+  unsigned int tile_rows,
+  unsigned int tile_cols,
+  unsigned int n_channels,
+  const T *inptr,
+  unsigned int in_row_stride,
+  unsigned int in_col_stride,
+  T *outptr,
+  unsigned int out_row_stride,
+  unsigned int out_col_stride,
+  unsigned int crop_top,
+  unsigned int crop_left,
+  unsigned int crop_bottom,
+  unsigned int crop_right
+);
+
+}