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+/*
+ * Copyright (c) 2017-2024 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 ACL_SRC_CPU_KERNELS_CPUSOFTMAXKERNEL_H
+#define ACL_SRC_CPU_KERNELS_CPUSOFTMAXKERNEL_H
+
+#include "src/core/common/Macros.h"
+#include "src/cpu/ICpuKernel.h"
+
+namespace arm_compute
+{
+namespace cpu
+{
+namespace kernels
+{
+/** Interface for softmax computation */
+class CpuSoftmaxKernel : public ICpuKernel<CpuSoftmaxKernel>
+{
+private:
+ using SoftmaxKernelPtr =
+ std::add_pointer<void(const ITensor *, void *const, ITensor *, float, int, const Window &)>::type;
+
+public:
+ CpuSoftmaxKernel() = default;
+ ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(CpuSoftmaxKernel);
+
+ /** Set the input and output tensors.
+ *
+ * @param[in] src Source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
+ * @param[out] dst Destination tensor info. Data types supported: same as @p input.
+ * @param[in] beta A scaling factor for the exponent.
+ * @param[in] is_log True if the operation is log-softmax.
+ * @param[in] axis The axis along which to perform the softmax operation.
+ *
+ * @param tmp Auxiliary tensor info. Must be type F32 and same shape as the input.
+ */
+ void configure(const ITensorInfo *src, ITensorInfo *dst, float beta, bool is_log, int axis, ITensorInfo *tmp);
+ /** Static function to check if given info will lead to a valid configuration
+ *
+ * Similar to CpuSoftmaxKernel::configure()
+ *
+ * @return a status
+ */
+ static Status
+ validate(const ITensorInfo *src, const ITensorInfo *dst, float beta, int axis, bool is_log, const ITensorInfo *tmp);
+
+ // Inherited methods overridden:
+ void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override;
+ const char *name() const override;
+
+ struct SoftmaxKernel
+ {
+ const char *name;
+ const SoftmaxKernelDataTypeISASelectorDataPtr is_selected;
+ SoftmaxKernelPtr ukernel;
+ };
+
+ static const std::vector<SoftmaxKernel> &get_available_kernels();
+
+private:
+ float _beta{1.0f};
+ SoftmaxKernelPtr _run_method{nullptr};
+ std::string _name{};
+ int _axis{};
+};
+} // namespace kernels
+} // namespace cpu
+} // namespace arm_compute
+#endif // ACL_SRC_CPU_KERNELS_CPUSOFTMAXKERNEL_H