1 files changed, 82 insertions, 0 deletions
diff --git a/compute_kernel_writer/src/Tensor3dMapper.h b/compute_kernel_writer/src/Tensor3dMapper.h
new file mode 100644
index 0000000000..e94b595193
--- /dev/null
+++ b/compute_kernel_writer/src/Tensor3dMapper.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2023 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.
+ */
+
+#ifndef CKW_SRC_TENSOR3DMAPPER_H
+#define CKW_SRC_TENSOR3DMAPPER_H
+
+#include <string>
+
+namespace ckw
+{
+// Forward declarations
+class ITensor;
+enum class TensorSamplerFormat;
+struct TileVariable;
+
+/** This internal-only class is responsible to map an Nd tensor spatial dimensions to a 3d tensor spatial dimensions with the
+ *  help of TensorSamplerFormat.
+ *  Attention: The batch is not considered as a spatial dimension and it is treated as an offset
+ *
+ *  The aim of the dimensionality reduction is primarily to reduce
+ *  the address calculation to:
+ *      x + y * stride_y + z * stride_z + offset, where offset is determined by the batch (for example, b * stride_batch).
+ *
+ */
+class Tensor3dMapper
+{
+public:
+    /** Constructor */
+    Tensor3dMapper(ITensor *tensor, TensorSamplerFormat format);
+
+    /** Get dimension x as string */
+    TileVariable dim_x() const;
+
+    /** Get dimension y as string */
+    TileVariable dim_y() const;
+
+    /** Get dimension z as string */
+    TileVariable dim_z() const;
+
+    /** Get batch dimension as string */
+    TileVariable dim_batch() const;
+
+    /** Get stride for dimension x as string */
+    TileVariable stride_x() const;
+
+    /** Get stride for dimension y as string */
+    TileVariable stride_y() const;
+
+    /** Get stride for dimension z as string */
+    TileVariable stride_z() const;
+
+    /** Get stride for batch dimension as string */
+    TileVariable stride_batch() const;
+
+private:
+    ITensor            *_tensor;
+    TensorSamplerFormat _format;
+};
+} // namespace ckw
+
+#endif /* CKW_SRC_TENSOR3DMAPPER_H */