COMPMID-3638: Move NEON kernels

Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Change-Id: Ieed3e4bc8be7fef80c90c5094599b477a56fc473
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4285
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 130 insertions, 0 deletions

diff --git a/src/core/NEON/kernels/NESobel7x7Kernel.h b/src/core/NEON/kernels/NESobel7x7Kernel.h
new file mode 100644
index 0000000000..c5a3899bab
--- /dev/null
+++ b/src/core/NEON/kernels/NESobel7x7Kernel.h
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2016-2020 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 ARM_COMPUTE_NESOBEL7x7KERNEL_H
+#define ARM_COMPUTE_NESOBEL7x7KERNEL_H
+
+#include "src/core/NEON/INEKernel.h"
+
+namespace arm_compute
+{
+class ITensor;
+
+/** Interface for the kernel to run the horizontal pass of 7x7 Sobel filter on a tensor.
+ *
+ */
+class NESobel7x7HorKernel : public INEKernel
+{
+public:
+    const char *name() const override
+    {
+        return "NESobel7x7HorKernel";
+    }
+    /** Default constructor */
+    NESobel7x7HorKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NESobel7x7HorKernel(const NESobel7x7HorKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NESobel7x7HorKernel &operator=(const NESobel7x7HorKernel &) = delete;
+    /** Allow instances of this class to be moved */
+    NESobel7x7HorKernel(NESobel7x7HorKernel &&) = default;
+    /** Allow instances of this class to be moved */
+    NESobel7x7HorKernel &operator=(NESobel7x7HorKernel &&) = default;
+    /** Default destructor */
+    ~NESobel7x7HorKernel() = default;
+
+    /** Initialise the kernel's source, destination and border mode.
+     *
+     * @note At least one of output_x or output_y must be set.
+     *
+     * @param[in]  input            Source tensor. Data type supported: U8.
+     * @param[out] output_x         (Optional) Destination tensor for the X gradient. Data type supported: S32.
+     * @param[out] output_y         (Optional) Destination tensor for the Y gradient. Data type supported: S32.
+     * @param[in]  border_undefined True if the border mode is undefined. False if it's replicate or constant.
+     */
+    void configure(const ITensor *input, ITensor *output_x, ITensor *output_y, bool border_undefined);
+
+    // Inherited methods overridden:
+    void run(const Window &window, const ThreadInfo &info) override;
+    BorderSize border_size() const override;
+
+private:
+    const ITensor *_input;       /**< Input tensor */
+    ITensor       *_output_x;    /**< X output of horizontal pass */
+    ITensor       *_output_y;    /**< Y output of horizontal pass */
+    bool           _run_sobel_x; /**< Do we need to run Sobel X? */
+    bool           _run_sobel_y; /**< Do we need to run Sobel Y? */
+    BorderSize     _border_size; /**< Border size */
+};
+
+/** Interface for the kernel to run the vertical pass of 7x7 Sobel Y filter on a tensor.
+ *
+*/
+class NESobel7x7VertKernel : public INEKernel
+{
+public:
+    const char *name() const override
+    {
+        return "NESobel7x7VertKernel";
+    }
+    /** Default constructor */
+    NESobel7x7VertKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NESobel7x7VertKernel(const NESobel7x7VertKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NESobel7x7VertKernel &operator=(const NESobel7x7VertKernel &) = delete;
+    /** Allow instances of this class to be moved */
+    NESobel7x7VertKernel(NESobel7x7VertKernel &&) = default;
+    /** Allow instances of this class to be moved */
+    NESobel7x7VertKernel &operator=(NESobel7x7VertKernel &&) = default;
+    /** Default destructor */
+    ~NESobel7x7VertKernel() = default;
+
+    /** Initialise the kernel's source, destination and border mode.
+     *
+     * @note At least one of output_x or output_y must be set
+     * @note If output_x is set then input_x must be set too
+     * @note If output_y is set then input_y must be set too
+     *
+     * @param[in]  input_x          (Optional) Input for X (X output of hor pass). Data type supported: S32.
+     * @param[in]  input_y          (Optional) Input for Y (Y output of hor pass). Data type supported: S32.
+     * @param[out] output_x         (Optional) Destination tensor for the X gradient. Data type supported: S32.
+     * @param[out] output_y         (Optional) Destination tensor for the Y gradient. Data type supported: S32.
+     * @param[in]  border_undefined True if the border mode is undefined. False if it's replicate or constant.
+     */
+    void configure(const ITensor *input_x, const ITensor *input_y, ITensor *output_x, ITensor *output_y, bool border_undefined);
+
+    // Inherited methods overridden:
+    void run(const Window &window, const ThreadInfo &info) override;
+    BorderSize border_size() const override;
+
+private:
+    const ITensor *_input_x;     /**< X input (X output of the hor pass) */
+    const ITensor *_input_y;     /**< Y input (Y output of the hor pass) */
+    ITensor       *_output_x;    /**< X output of sobel */
+    ITensor       *_output_y;    /**< Y output of sobel */
+    bool           _run_sobel_x; /**< Do we need to run sobel X? */
+    bool           _run_sobel_y; /**< Do we need to run sobel Y? */
+};
+} // namespace arm_compute
+#endif /*ARM_COMPUTE_NESOBEL7x7KERNEL_H */