/*
 * Copyright (c) 2017-2018 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/runtime/GLES_COMPUTE/functions/GCPoolingLayer.h"

#include "arm_compute/core/GLES_COMPUTE/IGCTensor.h"
#include "arm_compute/core/GLES_COMPUTE/kernels/GCPoolingLayerKernel.h"
#include "arm_compute/runtime/GLES_COMPUTE/GCScheduler.h"

#include "support/ToolchainSupport.h"

using namespace arm_compute;

GCPoolingLayer::GCPoolingLayer()
    : _kernel(nullptr), _border_handler(), _shift_handler()
{
}

void GCPoolingLayer::configure(IGCTensor *input, IGCTensor *output, const PoolingLayerInfo &pool_info)
{
    // Configure pooling kernel
    auto k = arm_compute::support::cpp14::make_unique<GCPoolingLayerKernel>();
    k->configure(input, output, pool_info);
    _kernel = std::move(k);

    // Configure border depending on operation required
    BorderMode border_mode = (PoolingType::MAX == pool_info.pool_type()) ? BorderMode::REPLICATE : BorderMode::CONSTANT;
    _border_handler.configure(input, _kernel->border_size(), border_mode, PixelValue(0.0f));

    _shift_handler.configure(input);
}

Status GCPoolingLayer::validate(const ITensorInfo *input, const ITensorInfo *output, const PoolingLayerInfo &pool_info)
{
    return GCPoolingLayerKernel::validate(input, output, pool_info);
}

void GCPoolingLayer::run()
{
    GCScheduler::get().dispatch(_shift_handler, false);
    GCScheduler::get().memory_barrier();
    GCScheduler::get().dispatch(_border_handler, false);
    GCScheduler::get().memory_barrier();
    GCScheduler::get().dispatch(*_kernel);
}