/*
 * 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.
 */
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/runtime/NEON/functions/NEDirectConvolutionLayer.h"
#include "arm_compute/runtime/Tensor.h"
#include "arm_compute/runtime/TensorAllocator.h"
#include "tests/NEON/Accessor.h"
#include "tests/PaddingCalculator.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/Validation.h"
#include "tests/validation/fixtures/DirectConvolutionLayerFixture.h"

namespace arm_compute
{
namespace test
{
namespace validation
{
namespace
{
#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
const RelativeTolerance<half_float::half> rel_tolerance_f16(half_float::half(0.2f)); /**< Relative tolerance value for FP16 types */
const AbsoluteTolerance<float>            abs_tolerance_f16(0.2f);                   /**< Absolute tolerance for FP16 types */
constexpr float                           tolerance_num = 0.07f;                     /**< Tolerance number for the FP16 implementation */
#endif                                                                               /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */
constexpr AbsoluteTolerance<float> tolerance_fp32(0.001f);                           /**< Tolerance for floating point tests */

/** Direct convolution data set.for FP32 */
const auto data_pad_f32 = concat(concat(combine(framework::dataset::make("PadX", { 0, 1 }),
                                                combine(framework::dataset::make("PadY", { 0, 1 }),
                                                        framework::dataset::make("KernelSize", 3))),
                                        combine(framework::dataset::make("PadX", { 0, 2 }),
                                                combine(framework::dataset::make("PadY", { 0, 2 }),
                                                        framework::dataset::make("KernelSize", 3)))),
                                 combine(framework::dataset::make("PadX", { 0, 3 }),
                                         combine(framework::dataset::make("PadY", { 0, 3 }),
                                                 framework::dataset::make("KernelSize", 5))));

/** Direct convolution data set.for FP16 */
const auto data_pad_f16 = concat(combine(framework::dataset::make("PadX", { 0, 1 }),
                                         combine(framework::dataset::make("PadY", { 0, 1 }),
                                                 framework::dataset::make("KernelSize", 3))),
                                 combine(framework::dataset::make("PadX", { 0 }),
                                         combine(framework::dataset::make("PadY", { 0 }),
                                                 framework::dataset::make("KernelSize", 1))));

const auto data_f32 = combine(datasets::SmallDirectConvolutionShapes(),
                              combine(framework::dataset::make("StrideX", { 1, 2, 3 }),
                                      combine(framework::dataset::make("StrideY", { 1, 2, 3 }),
                                              data_pad_f32)));

const auto data_f16 = combine(datasets::SmallDirectConvolutionShapes(),
                              combine(framework::dataset::make("StrideX", { 1, 2, 3 }),
                                      combine(framework::dataset::make("StrideY", { 1, 2, 3 }),
                                              data_pad_f16)));

const auto data_prec = combine(datasets::SmallDirectConvolutionShapes(),
                               combine(framework::dataset::make("StrideX", { 1 }),
                                       combine(framework::dataset::make("StrideY", { 1 }),
                                               combine(framework::dataset::make("PadX", { 1 }),
                                                       combine(framework::dataset::make("PadY", { 1 }),
                                                               framework::dataset::make("KernelSize", 3))))));

const auto data9x9 = combine(datasets::SmallDirectConvolutionShapes(),
                             combine(framework::dataset::make("StrideX", { 1 }),
                                     combine(framework::dataset::make("StrideY", { 1 }),
                                             combine(framework::dataset::make("PadX", { 0, 2 }),
                                                     combine(framework::dataset::make("PadY", { 0, 3 }),
                                                             framework::dataset::make("KernelSize", 9))))));

const auto data_f32_nightly = combine(data_f32, framework::dataset::make("NumKernels", { 1, 4 }));
const auto data_f16_nightly = combine(data_f16, framework::dataset::make("NumKernels", { 1, 4 }));

const auto data_precommit    = combine(data_prec, framework::dataset::make("NumKernels", { 1 }));
const auto data_precommit9x9 = combine(data9x9, framework::dataset::make("NumKernels", { 4 }));

/* The following tests is from real use-case that made DirectConvolution
 * overflows in terms of its tensor indexing. This test case is using
 * a separate tolerance due to the following reason.
 * - It has shown that it requires generally larger absolute tolerance
 *   for large numbers or larger relative tolerance for small numbers.
 * - With the first reason, since it is mainly testing index overflow,
 *   a value with a margin is used to avoid uninteded test failures
 *   during nightly.
 */
constexpr AbsoluteTolerance<float> usecase_tolerance_fp32(0.05f);

const auto data_nightly_usecase = combine(framework::dataset::make("InputShape", { TensorShape{ 3U, 800U, 800U } }),
                                          combine(framework::dataset::make("StrideX", { 1 }),
                                                  combine(framework::dataset::make("StrideY", { 1 }),
                                                          combine(framework::dataset::make("PadX", { 4 }),
                                                                  combine(framework::dataset::make("PadY", { 4 }),
                                                                          combine(framework::dataset::make("KernelSize", 9),
                                                                                  framework::dataset::make("NumKernels", { 16 })))))));

/** Activation function Dataset*/
const auto ActivationFunctionsDataset = framework::dataset::make("ActivationInfo",
{
    ActivationLayerInfo(),
    ActivationLayerInfo(ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU, 0.5f)
});
} // namespace

TEST_SUITE(NEON)
TEST_SUITE(DirectConvolutionLayer)

/** Check whether the configuration of a Direct Convolution layer with no
 * bias leads to a successful execution.
 */
TEST_CASE(NoBias, framework::DatasetMode::PRECOMMIT)
{
    const auto     src_shape     = TensorShape(27U, 13U, 2U);
    const auto     weights_shape = TensorShape(3U, 3U, 2U, 4U);
    const auto     bias_shape    = TensorShape(4U);
    const auto     dst_shape     = TensorShape(25U, 11U, 4U);
    constexpr auto dt            = DataType::F32;

    auto src     = create_tensor<Tensor>(src_shape, dt);
    auto weights = create_tensor<Tensor>(weights_shape, dt);
    auto dst     = create_tensor<Tensor>(dst_shape, dt);

    const auto conv_info = PadStrideInfo(1, 1, 0, 0);

    // Create Direct Convolution function
    NEDirectConvolutionLayer conv{};
    conv.configure(&src, &weights, nullptr, &dst, conv_info);

    src.allocator()->allocate();
    weights.allocator()->allocate();
    dst.allocator()->allocate();

    library->fill_tensor_value(Accessor(src), 1.f);
    library->fill_tensor_value(Accessor(weights), 1.f);

    conv.run();

    // Compute reference to compare
    SimpleTensor<float> ref_src{ src_shape, dt };
    SimpleTensor<float> ref_weights{ weights_shape, dt };
    SimpleTensor<float> ref_bias{ bias_shape, dt };
    library->fill_tensor_value(ref_src, 1.f);
    library->fill_tensor_value(ref_weights, 1.f);
    // No bias
    library->fill_tensor_value(ref_bias, 0.f);
    auto ref_dst = reference::convolution_layer<float>(ref_src, ref_weights, ref_bias, dst_shape, conv_info);

    validate(Accessor(dst), ref_dst);
}

// *INDENT-OFF*
// clang-format off
DATA_TEST_CASE(Validate, framework::DatasetMode::ALL, zip(zip(zip(zip(zip(zip(
        framework::dataset::make("InputInfo", { TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Mismatching data type input/weights
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Mismatching input feature maps
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Unsupported kernel width
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Non-rectangular weights dimensions
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Invalid weights dimensions
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Invalid stride
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Invalid biases size
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Invalid biases dimensions
                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Invalid output size
                                              }),
        framework::dataset::make("WeightsInfo",{ TensorInfo(TensorShape(3U, 3U, 2U, 4U), 1, DataType::F16),
                                                 TensorInfo(TensorShape(3U, 3U, 3U, 4U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(9U, 9U, 2U, 4U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(5U, 3U, 2U, 4U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(3U, 3U, 2U, 4U, 3U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(3U, 3U, 2U, 4U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(3U, 3U, 2U, 4U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(3U, 3U, 2U, 4U), 1, DataType::F32),
                                                 TensorInfo(TensorShape(3U, 3U, 2U, 4U), 1, DataType::F32),
                                              })),
        framework::dataset::make("BiasesInfo",{ TensorInfo(TensorShape(4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(3U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U, 2U), 1, DataType::F32),
                                                TensorInfo(TensorShape(4U), 1, DataType::F32),
                                              })),
        framework::dataset::make("OutputInfo",{ TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(25U, 11U, 4U), 1, DataType::F32),
                                                TensorInfo(TensorShape(26U, 11U, 4U), 1, DataType::F32),
                                              })),
        framework::dataset::make("ConvInfo",  { PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(3, 3, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                                PadStrideInfo(1, 1, 0, 0),
                                               })),
                                                       framework::dataset::make("ActivationInfo",
{
    ActivationLayerInfo(),
    ActivationLayerInfo(ActivationLayerInfo::ActivationFunction::RELU)
})),
        framework::dataset::make("Expected", { false, false, false, false, false, false, false, false, false })),
        input_info, weights_info, biases_info, output_info, conv_info, act_info, expected)
{
        bool is_valid = bool(NEDirectConvolutionLayer::validate(&input_info.clone()->set_is_resizable(false), &weights_info.clone()->set_is_resizable(false), &biases_info.clone()->set_is_resizable(false), &output_info.clone()->set_is_resizable(false), conv_info, act_info));
        ARM_COMPUTE_EXPECT(is_valid == expected, framework::LogLevel::ERRORS);
}
// clang-format on
// *INDENT-ON*

DATA_TEST_CASE(NoPaddingNHWCKernel, framework::DatasetMode::ALL, combine(combine(combine(data_precommit,
                                                                                         framework::dataset::make("DataType", DataType::F32)),
                                                                                 ActivationFunctionsDataset),
                                                                         framework::dataset::make("DataLayout", { DataLayout::NHWC })),

               shape, stride_x, stride_y, pad_x, pad_y, kernel_size, num_kernels, data_type, act_info, data_layout)
{
    TensorShape         input_shape = TensorShape(shape);
    TensorShape         weights_shape(kernel_size, kernel_size, input_shape.z(), num_kernels);
    const PadStrideInfo info(stride_x, stride_y, pad_x, pad_y, DimensionRoundingType::FLOOR);

    TensorInfo input_info   = TensorInfo(input_shape, 1, data_type);
    TensorInfo weights_info = TensorInfo(weights_shape, 1, data_type);

    TensorShape output_shape = compute_deep_convolution_shape(input_info, weights_info, info);

    if(data_layout == DataLayout::NHWC)
    {
        permute(input_shape, PermutationVector(2U, 0U, 1U));
        permute(weights_shape, PermutationVector(2U, 0U, 1U));
        permute(output_shape, PermutationVector(2U, 0U, 1U));
    }

    // Create tensors
    Tensor src     = create_tensor<Tensor>(input_shape, data_type, 1, QuantizationInfo(), data_layout);
    Tensor weights = create_tensor<Tensor>(weights_shape, data_type, 1, QuantizationInfo(), data_layout);
    Tensor dst     = create_tensor<Tensor>(output_shape, data_type, 1, QuantizationInfo(), data_layout);

    // Create and configure function
    NEDirectConvolutionLayer conv;
    conv.configure(&src, &weights, nullptr, &dst, info, act_info);

    validate(src.info()->padding(), PaddingSize(0, 0, 0, 0));
    validate(weights.info()->padding(), PaddingSize(0, 0, 0, 0));
    validate(dst.info()->padding(), PaddingSize(0, 0, 0, 0));
}

template <typename T>
using NEDirectConvolutionLayerFixture = DirectConvolutionValidationFixture<Tensor, Accessor, NEDirectConvolutionLayer, T>;
template <typename T>
using NEDirectConvolutionLayerMixedDataLayoutFixture = DirectConvolutionValidationFixture<Tensor, Accessor, NEDirectConvolutionLayer, T, true>;

TEST_SUITE(Float)
#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
TEST_SUITE(FP16)
FIXTURE_DATA_TEST_CASE(RunSmall, NEDirectConvolutionLayerFixture<half>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(data_precommit, framework::dataset::make("DataType",
                                                                                                                   DataType::F16)),
                                                                                                                   ActivationFunctionsDataset),
                                                                                                                   framework::dataset::make("DataLayout", DataLayout::NCHW)))
{
    // Validate output
    validate(Accessor(_target), _reference, rel_tolerance_f16, tolerance_num, abs_tolerance_f16);
}
FIXTURE_DATA_TEST_CASE(RunLarge, NEDirectConvolutionLayerFixture<half>, framework::DatasetMode::NIGHTLY, combine(combine(combine(data_f16_nightly, framework::dataset::make("DataType", DataType::F16)),
                                                                                                                 ActivationFunctionsDataset),
                                                                                                                 framework::dataset::make("DataLayout", DataLayout::NCHW)))
{
    // Validate output
    validate(Accessor(_target), _reference, rel_tolerance_f16, tolerance_num, abs_tolerance_f16);
}
TEST_SUITE_END() // FP16
#endif           /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */

TEST_SUITE(FP32)
FIXTURE_DATA_TEST_CASE(RunSmall, NEDirectConvolutionLayerFixture<float>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(data_precommit, framework::dataset::make("DataType",
                                                                                                                    DataType::F32)),
                                                                                                                    ActivationFunctionsDataset),
                                                                                                                    framework::dataset::make("DataLayout", { DataLayout::NCHW, DataLayout::NHWC })))
{
    // Validate output
    validate(Accessor(_target), _reference, tolerance_fp32);
}
FIXTURE_DATA_TEST_CASE(RunMixedDataLayout, NEDirectConvolutionLayerMixedDataLayoutFixture<float>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(data_precommit,
                                                                                                                    framework::dataset::make("DataType", DataType::F32)),
                                                                                                                    ActivationFunctionsDataset),
                                                                                                                    framework::dataset::make("DataLayout", { DataLayout::NCHW, DataLayout::NHWC })))
{
    // Validate output
    validate(Accessor(_target), _reference, tolerance_fp32);
}
FIXTURE_DATA_TEST_CASE(RunSmall9x9, NEDirectConvolutionLayerFixture<float>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(data_precommit9x9, framework::dataset::make("DataType",
                                                                                                                       DataType::F32)),
                                                                                                                       ActivationFunctionsDataset),
                                                                                                                       framework::dataset::make("DataLayout", { DataLayout::NHWC })))
{
    // Validate output
    validate(Accessor(_target), _reference, tolerance_fp32);
}
FIXTURE_DATA_TEST_CASE(RunLarge, NEDirectConvolutionLayerFixture<float>, framework::DatasetMode::NIGHTLY, combine(combine(combine(data_f32_nightly, framework::dataset::make("DataType",
                                                                                                                  DataType::F32)),
                                                                                                                  ActivationFunctionsDataset),
                                                                                                                  framework::dataset::make("DataLayout", { DataLayout::NCHW, DataLayout::NHWC })))
{
    // Validate output
    validate(Accessor(_target), _reference, tolerance_fp32);
}
FIXTURE_DATA_TEST_CASE(RunLargeUsecase, NEDirectConvolutionLayerFixture<float>, framework::DatasetMode::NIGHTLY, combine(combine(combine(data_nightly_usecase, framework::dataset::make("DataType",
                       DataType::F32)),
                       framework::dataset::make("ActivationInfo", { ActivationLayerInfo() })),
                       framework::dataset::make("DataLayout", { DataLayout::NHWC })))
{
    // Validate output
    validate(Accessor(_target), _reference, usecase_tolerance_fp32);
}
TEST_SUITE_END() // FP32
TEST_SUITE_END() // Float
TEST_SUITE_END() // DirectConvolutionLayer
TEST_SUITE_END() // Neon
} // namespace validation
} // namespace test
} // namespace arm_compute