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/*
* Copyright (c) 2021-2024 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_ARM_COMPUTE_RUNTIME_EXPERIMENTAL_OPERATORS_CPUSOFTMAX_H
#define ACL_ARM_COMPUTE_RUNTIME_EXPERIMENTAL_OPERATORS_CPUSOFTMAX_H
#include "arm_compute/core/TensorInfo.h"
#include "arm_compute/runtime/IOperator.h"
#include <memory>
namespace arm_compute
{
namespace experimental
{
namespace op
{
class CpuSoftmaxKernel;
/*
* A shallow wrapper for arm_compute::cpu::CpuSoftmaxGeneric.
* Any new features should be added to arm_compute::cpu::CpuSoftmaxGeneric
* and arm_compute::experimental::op::CpuSoftmax should remain a shallow wrapper.
*/
class CpuSoftmax : public IOperator
{
public:
/** Constructor **/
CpuSoftmax();
/** Prevent instances of this class from being copied (As this class contains pointers) */
CpuSoftmax(const CpuSoftmax &) = delete;
/** Prevent copy assignment */
CpuSoftmax &operator=(const CpuSoftmax &) = delete;
/** Default move constructor */
CpuSoftmax(CpuSoftmax &&) = default;
/** Default move assignment */
CpuSoftmax &operator=(CpuSoftmax &&) = default;
/** Default destructor */
~CpuSoftmax() override;
/** Set the input and output tensors.
*
* Valid data type configurations:
* |src |dst |
* |:--------------|:--------------|
* |QASYMM8 |QASYMM8 |
* |QASYMM8_SIGNED |QASYMM8_SIGNED |
* |F16 |F16 |
* |F32 |F32 |
*
* @param[in,out] src Source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
* last value of each row to the nearest multiple.
* @param[out] dst Destination tensor ifo. Data types supported: same as @p input.
* @param[in] beta (Optional) A scaling factor for the exponent.
* @param[in] axis (Optional) The dimension in which to apply the function. E.g. for input of shape 4x5x6 and
* axis=1, softmax will be applied to 4x6=24 vectors of size 5. Defaults to 0
* @param[in] is_log True if the operation is log-softmax
*/
void configure(const ITensorInfo *src, ITensorInfo *dst, float beta = 1.0f, int32_t axis = 0, bool is_log = false);
/** Static function to check if given info will lead to a valid configuration
*
* Similar to @ref CpuSoftmax::configure()
*
* @return a status
*/
static Status
validate(const ITensorInfo *src, const ITensorInfo *dst, float beta = 1.0f, int32_t axis = 0, bool is_log = false);
// Inherited methods overridden:
void run(ITensorPack &tensors) override;
experimental::MemoryRequirements workspace() const override;
// Unused
void prepare(ITensorPack &constants) override;
private:
struct Impl;
std::unique_ptr<Impl> impl_;
};
} // namespace op
} // namespace experimental
} // namespace arm_compute
#endif // ACL_ARM_COMPUTE_RUNTIME_EXPERIMENTAL_OPERATORS_CPUSOFTMAX_H
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