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/*
* Copyright (c) 2017-2021 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_CL_GEMMLOWP_OUTPUT_STAGE_H
#define ARM_COMPUTE_CL_GEMMLOWP_OUTPUT_STAGE_H
#include "src/gpu/cl/ClCompileContext.h"
#include "src/gpu/cl/IClOperator.h"
/** This file contains all available output stages for GEMMLowp on OpenCL.
*
* In gemmlowp, the "output stage" is the process that takes a final int32 accumulator value (the output of @ref CLGEMMLowpMatrixMultiplyCore),
* and processes it to obtain the final QASYMM8/QASYMM8_SIGNED value.
*
* More information about the GEMMLowp output stage can be found at https://github.com/google/gemmlowp/blob/master/doc/output.md
*/
namespace arm_compute
{
namespace opencl
{
/** Basic function to execute GEMMLowpQuantizeDown kernels on CL.
*
* This function calls the following CL kernels:
*
* -# @ref opencl::kernels::ClGemmLowpQuantizeDownInt32ScaleKernel
* -# @ref opencl::kernels::ClGemmLowpQuantizeDownInt32ScaleByFloatKernel
* -# @ref opencl::kernels::ClGemmLowpQuantizeDownInt32ScaleByFixedPointKernel
*/
class ClGemmLowpOutputStage : public IClOperator
{
public:
/** Constructor */
ClGemmLowpOutputStage() = default;
/** Initialise the kernel's inputs, output
*
* Valid data layouts:
* - All
*
* Valid data type configurations:
* |src0 |src1 |dst |
* |:--------------|:-------------|:-------------|
* |S32 |S32 |QASYMM8 |
* |S32 |S32 |QASYMM8_SIGNED|
* |S32 |S32 |QSYMM16 |
*
* @param[in] compile_context The compile context to be used.
* @param[in] src Source tensor. Data type supported: S32
* @param[in] bias Biases tensor. Only shared biases supported and it can be a nullptr if the biases addition is not required.
* Biases are 1D tensor with dimensions [OFM]. Data type supported: Same as @p src.
* @param[out] dst Destination tensor. Data type supported: QASYMM8/QASYMM8_SIGNED
* @param[in] info GEMMLowp output stage metadata.
*/
void configure(const CLCompileContext &compile_context,
const ITensorInfo *src,
const ITensorInfo *bias,
ITensorInfo *dst,
const GEMMLowpOutputStageInfo &info);
/** Static function to check if given info will lead to a valid configuration
*
* Similar to ClGemmLowpOutputStage::configure()
*
* @return a status
*/
static Status validate(const ITensorInfo *src,
const ITensorInfo *bias,
const ITensorInfo *dst,
const GEMMLowpOutputStageInfo &info);
// Inherited methods overridden:
void run(ITensorPack &tensors) override;
};
} // namespace opencl
} // namespace arm_compute
#endif /* ARM_COMPUTE_CL_GEMMLOWP_OUTPUT_STAGE_H */
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