/*
 * Copyright (c) 2017-2020 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.
 */
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/runtime/GLES_COMPUTE/functions/GCScale.h"
#include "arm_compute/runtime/Tensor.h"
#include "arm_compute/runtime/TensorAllocator.h"
#include "tests/GLES_COMPUTE/GCAccessor.h"
#include "tests/PaddingCalculator.h"
#include "tests/datasets/BorderModeDataset.h"
#include "tests/datasets/SamplingPolicyDataset.h"
#include "tests/datasets/ShapeDatasets.h"
#include "tests/framework/Asserts.h"
#include "tests/framework/Macros.h"
#include "tests/framework/datasets/Datasets.h"
#include "tests/validation/Helpers.h"
#include "tests/validation/Validation.h"
#include "tests/validation/fixtures/ScaleFixture.h"

namespace arm_compute
{
namespace test
{
namespace validation
{
namespace
{
/** CNN data types */
const auto ScaleDataTypes = framework::dataset::make("DataType",
{
    DataType::F16,
});

/** Aligned corners, this functionality is supported only by NEON and OpenCL backends */
const auto AlignCorners = framework::dataset::make("AlignCorners",
{
    false,
});

/** Tolerance */
RelativeTolerance<half> tolerance_f16(half(0.1));
} // namespace

TEST_SUITE(GC)
TEST_SUITE(Scale)

DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(combine(combine(concat(datasets::MediumShapes(), datasets::LargeShapes()), ScaleDataTypes),
                                                                                   framework::dataset::make("InterpolationPolicy", { InterpolationPolicy::NEAREST_NEIGHBOR })),
                                                                           datasets::BorderModes()),
                                                                   datasets::SamplingPolicies()),
               shape, data_type, policy, border_mode, sampling_policy)
{
    std::mt19937                           generator(library->seed());
    std::uniform_real_distribution<float>  distribution_float(0.25, 2);
    const float                            scale_x = distribution_float(generator);
    const float                            scale_y = distribution_float(generator);
    std::uniform_int_distribution<uint8_t> distribution_u8(0, 255);
    uint8_t                                constant_border_value = distribution_u8(generator);

    // Create tensors
    GCTensor    src = create_tensor<GCTensor>(shape, data_type);
    TensorShape shape_scaled(shape);
    shape_scaled.set(0, shape[0] * scale_x);
    shape_scaled.set(1, shape[1] * scale_y);
    GCTensor dst = create_tensor<GCTensor>(shape_scaled, data_type);

    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
    ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);

    // Create and configure function
    GCScale gcscale;
    gcscale.configure(&src, &dst, ScaleKernelInfo{ policy, border_mode, constant_border_value, sampling_policy });

    // Get border size depending on border mode
    const BorderSize border_size(border_mode == BorderMode::UNDEFINED ? 0 : 1);

    // Validate valid region
    const ValidRegion dst_valid_region = calculate_valid_region_scale(*(src.info()), shape_scaled, policy, sampling_policy, (border_mode == BorderMode::UNDEFINED));
    validate(dst.info()->valid_region(), dst_valid_region);

    // Validate padding
    PaddingCalculator calculator(shape_scaled.x(), 4);
    calculator.set_border_mode(border_mode);

    //const PaddingSize read_padding(border_size);
    const PaddingSize write_padding = calculator.required_padding(PaddingCalculator::Option::EXCLUDE_BORDER);
    //validate(src.info()->padding(), read_padding);
    validate(dst.info()->padding(), write_padding);
}

template <typename T>
using GCScaleFixture = ScaleValidationFixture<GCTensor, GCAccessor, GCScale, T>;

TEST_SUITE(Float)
TEST_SUITE(FP16)
FIXTURE_DATA_TEST_CASE(RunSmall, GCScaleFixture<half>, framework::DatasetMode::ALL, combine(combine(combine(combine(combine(combine(datasets::SmallShapes(), framework::dataset::make("DataType",
                                                                                                                    DataType::F16)),
                                                                                                                    framework::dataset::make("DataLayout", { DataLayout::NCHW })),
                                                                                                                    framework::dataset::make("InterpolationPolicy", { InterpolationPolicy::NEAREST_NEIGHBOR })),
                                                                                                            datasets::BorderModes()),
                                                                                                    datasets::SamplingPolicies()),
                                                                                            AlignCorners))
{
    //Create valid region
    TensorInfo        src_info(_shape, 1, _data_type);
    const ValidRegion valid_region = calculate_valid_region_scale(src_info, _reference.shape(), _policy, _sampling_policy, (_border_mode == BorderMode::UNDEFINED));

    // Validate output
    validate(GCAccessor(_target), _reference, valid_region, tolerance_f16);
}
FIXTURE_DATA_TEST_CASE(RunLarge, GCScaleFixture<half>, framework::DatasetMode::NIGHTLY, combine(combine(combine(combine(combine(combine(datasets::LargeShapes(), framework::dataset::make("DataType",
                                                                                                                        DataType::F16)),
                                                                                                                        framework::dataset::make("DataLayout", { DataLayout::NCHW })),
                                                                                                                        framework::dataset::make("InterpolationPolicy", { InterpolationPolicy::NEAREST_NEIGHBOR })),
                                                                                                                datasets::BorderModes()),
                                                                                                        datasets::SamplingPolicies()),
                                                                                                AlignCorners))
{
    //Create valid region
    TensorInfo        src_info(_shape, 1, _data_type);
    const ValidRegion valid_region = calculate_valid_region_scale(src_info, _reference.shape(), _policy, _sampling_policy, (_border_mode == BorderMode::UNDEFINED));

    // Validate output
    validate(GCAccessor(_target), _reference, valid_region, tolerance_f16);
}
TEST_SUITE_END()
TEST_SUITE_END()

TEST_SUITE_END()
TEST_SUITE_END()
} // namespace validation
} // namespace test
} // namespace arm_compute