/*
 * Copyright (c) 2016-2021 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_NEDEPTHCONVERT_H
#define ARM_COMPUTE_NEDEPTHCONVERT_H

#include "arm_compute/runtime/IFunction.h"

#include "arm_compute/core/Types.h"

#include <memory>

namespace arm_compute
{
class ITensor;
class ITensorInfo;

/**Basic function to run @ref cpu::kernels::CpuCastKernel */
class NEDepthConvertLayer : public IFunction
{
public:
    /** Constructor */
    NEDepthConvertLayer();
    /** Destructor */
    ~NEDepthConvertLayer();
    /** Prevent instances of this class from being copied (As this class contains pointers) */
    NEDepthConvertLayer(const NEDepthConvertLayer &) = delete;
    /** Default move constructor */
    NEDepthConvertLayer(NEDepthConvertLayer &&);
    /** Prevent instances of this class from being copied (As this class contains pointers) */
    NEDepthConvertLayer &operator=(const NEDepthConvertLayer &) = delete;
    /** Default move assignment operator */
    NEDepthConvertLayer &operator=(NEDepthConvertLayer &&);
    /** Initialize the function's source, destination
     *
     * Valid data layouts:
     * - All
     *
     * Valid data type configurations:
     * |src            |dst                        |
     * |:--------------|:--------------------------|
     * |QASYMM8        | F16, F32                  |
     * |U8             | U16, S16, S32             |
     * |U16            | U8, U32                   |
     * |S16            | U8, S32                   |
     * |BFLOAT16       | F32                       |
     * |F16            | QASYMM8, F32              |
     * |F32            | QASYMM8, F16, BFLOAT16    |
     *
     * Input data type must be different than output data type.
     *
     * @param[in]  input  The input tensor to convert. Data types supported: QASYMM8/U8/U16/S16/BFLOAT16/F16/F32.
     * @param[out] output The output tensor. Data types supported: QASYMM8/U8/U16/S16/U32/S32/BFLOAT16/F16/F32.
     * @param[in]  policy Conversion policy.
     * @param[in]  shift  (Optional) Value for down/up conversions. Must be 0 <= shift < 8.
     */
    void configure(const ITensor *input, ITensor *output, ConvertPolicy policy, uint32_t shift = 0);
    /** Static function to check if given info will lead to a valid configuration of @ref NEDepthConvertLayer
     *
     * @param[in] input  Source tensor info. Data types supported: QASYMM8/U8/U16/S16/BFLOAT16/F16/F32.
     * @param[in] output Destination tensor info. Data type supported: QASYMM8/U8/U16/S16/U32/S32/BFLOAT16/F16/F32.
     * @param[in] policy Conversion policy.
     * @param[in] shift  (Optional) Value for down/up conversions. Must be 0 <= shift < 8.
     *
     * @return a status
     */
    static Status validate(const ITensorInfo *input, const ITensorInfo *output, ConvertPolicy policy, uint32_t shift = 0);

    // Inherited methods overridden
    void run() override;

private:
    struct Impl;
    std::unique_ptr<Impl> _impl;
};
} // namespace arm_compute
#endif /*ARM_COMPUTE_NEDEPTHCONVERT_H*/