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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_CPU_QUANTIZE_KERNEL_H
+#define ARM_COMPUTE_CPU_QUANTIZE_KERNEL_H
+
+#include "src/core/common/Macros.h"
+#include "src/core/cpu/ICpuKernel.h"
+
+namespace arm_compute
+{
+namespace cpu
+{
+namespace kernels
+{
+/** Interface for the quantization layer kernel.
+ *
+ * @note The implementation supports only 3D input tensors
+ */
+class CpuQuantizeKernel : public ICpuKernel
+{
+public:
+ /** Default constructor */
+ CpuQuantizeKernel() = default;
+ ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(CpuQuantizeKernel);
+ /** Set the input, output.
+ *
+ * @param[in] src Source tensor info. The dimensions over the third will be interpreted as batches. Data types supported: QASYMM8/QASYMM8_SIGNED/F32/F16.
+ * @param[out] dst Destination tensor info with the same dimensions of input. Data types supported: QASYMM8/QASYMM8_SIGNED/QASYMM16.
+ *
+ * @note Output auto initialization is not supported by this kernel
+ */
+ void configure(const ITensorInfo *src, ITensorInfo *dst);
+ /** Static function to check if given info will lead to a valid configuration
+ *
+ * Similar to @ref CpuQuantizeKernel::configure()
+ *
+ * @return a status
+ */
+ static Status validate(const ITensorInfo *src, const ITensorInfo *dst);
+
+ // Inherited methods overridden:
+ void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override;
+ const char *name() const override;
+
+private:
+ /** Common signature for all the specialised @ref CpuQuantizeKernel functions
+ *
+ * @param[in] window Region on which to execute the kernel.
+ */
+ using QuantizeFunctionExecutorPtr = void (CpuQuantizeKernel::*)(const ITensor *src, ITensor *dst, const Window &window);
+ /** Function to apply QASYMM8 or QASYMM8_SIGNED quantization on a tensor.
+ *
+ * @param[in] window Region on which to execute the kernel.
+ */
+ template <typename TIn, typename TOut>
+ void run_quantize_qasymm8(const ITensor *src, ITensor *dst, const Window &window);
+ /** Function to apply QASYMM16 quantization on a tensor.
+ *
+ * @param[in] window Region on which to execute the kernel.
+ */
+ template <typename T>
+ void run_quantize_qasymm16(const ITensor *src, ITensor *dst, const Window &window);
+
+ QuantizeFunctionExecutorPtr _func{ nullptr };
+};
+} // namespace kernels
+} // namespace cpu
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_CPU_QUANTIZE_KERNEL_H */