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+/*
+ * Copyright (c) 2018-2020 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 SRC_INEGEMMWRAPPERKERNEL_H
+#define SRC_INEGEMMWRAPPERKERNEL_H
+
+#include "arm_compute/core/NEON/INEKernel.h"
+
+namespace arm_compute
+{
+class ITensor;
+
+/** Common interface for all the arm_gemm Gemms
+ */
+class INEGEMMWrapperKernel : public INEKernel
+{
+public:
+ /** Parameters defining the dimensions of the matrices being multiplied */
+ struct Params
+ {
+ unsigned int M{ 0 }; /**< Rows in output matrix C (and input matrix A). */
+ unsigned int N{ 0 }; /**< Columns in output matrix C (and input matrix B). */
+ unsigned int K{ 0 }; /**< Columns of input matrix A (= rows of input matrix B). */
+ unsigned int batches{ 0 }; /**< Number of "batched" GEMMs (unique A and C, shared B). */
+ unsigned int multis{ 0 }; /**< Number of "multi" GEMMs (unique A, B and C). */
+ };
+
+ static Params extract_parameters(const ITensor *a, const ITensor *b, const ITensor *c, const GEMMInfo &gemm_info);
+
+ /** Constructor */
+ INEGEMMWrapperKernel();
+ /** Prevent instances of this class from being copied */
+ INEGEMMWrapperKernel(const INEGEMMWrapperKernel &) = delete;
+ /** Prevent instances of this class from being copied */
+ INEGEMMWrapperKernel &operator=(const INEGEMMWrapperKernel &) = delete;
+ /** Allow instances of this class to be moved */
+ INEGEMMWrapperKernel(INEGEMMWrapperKernel &&) = default;
+ /** Allow instances of this class to be moved */
+ INEGEMMWrapperKernel &operator=(INEGEMMWrapperKernel &&) = default;
+ /** Initialise the kernel's input and output.
+ *
+ * @note The input and output tensor must have the same dimensions
+ *
+ * @param[in] a Input tensor (Matrix A)
+ * @param[in] b Input tensor (Matrix B)
+ * @param[out] c Output tensor to store the result of matrix multiplication. Data type supported: same as @p input0.
+ * @param[in] alpha Scalar multiplier to apply to AB matrix product.
+ * @param[in] beta Scalar multiplier to apply to input C matrix before adding product.
+ * @param[in] gemm_info GEMM meta-data
+ */
+ void configure(const ITensor *a, const ITensor *b, ITensor *c, float alpha, float beta, const GEMMInfo &gemm_info);
+
+ // Inherited methods overridden:
+ void run(const Window &window, const ThreadInfo &info) override;
+
+protected:
+ /** Called as part of configure() after _a, _b, _c and _params have been set.
+ *
+ * @param[in] alpha Scalar multiplier to apply to AB matrix product.
+ * @param[in] beta Scalar multiplier to apply to input C matrix before adding product.
+ *
+ * @return A 3D execution window.
+ */
+ virtual Window configure_internal(float alpha, float beta) = 0;
+
+ /** Run the kernel from the start to the end offset in window.
+ *
+ * @param[in] window Window to use for the iteration
+ * @param[in] start_offset Where to start iterating from (In Window coordinates)
+ * @param[in] end_offset Where to stop iterating (In Window coordinates).
+ * @param[in] info Info about executing thread and CPU.
+ */
+ virtual void run_internal(const Window &window, const Coordinates &start_offset, const Coordinates &end_offset, const ThreadInfo &info) = 0;
+
+ const ITensor *_a;
+ const ITensor *_b;
+ ITensor *_c;
+ Params _params;
+ GEMMInfo _gemm_info;
+
+private:
+ Window _window3d;
+ TensorShape _window_shape;
+};
+
+} // namespace arm_compute
+
+#endif /* SRC_INEGEMMRAPPERKERNEL_H */