src/runtime/GLES_COMPUTE/functions/GCDepthConcatenateLayer.cpp

/*
 * Copyright (c) 2017-2019 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/GCDepthConcatenateLayer.h"

#include "arm_compute/core/Error.h"
#include "arm_compute/core/GLES_COMPUTE/IGCTensor.h"
#include "arm_compute/core/PixelValue.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/runtime/GLES_COMPUTE/GCScheduler.h"
#include "support/ToolchainSupport.h"

using namespace arm_compute;

GCDepthConcatenateLayer::GCDepthConcatenateLayer() //NOLINT
    : _concat_kernels_vector(),
      _border_handlers_vector(),
      _num_inputs(0)
{
}

void GCDepthConcatenateLayer::configure(std::vector<IGCTensor *> inputs_vector, IGCTensor *output) //NOLINT
{
    ARM_COMPUTE_ERROR_ON(inputs_vector.size() < 2);

    _num_inputs = inputs_vector.size();

    unsigned int depth_offset = 0;

    _concat_kernels_vector.reserve(_num_inputs);
    _border_handlers_vector.reserve(_num_inputs);

    for(unsigned int i = 0; i < _num_inputs; i++)
    {
        auto concat_kernel = support::cpp14::make_unique<GCDepthConcatenateLayerKernel>();
        auto border_kernel = support::cpp14::make_unique<GCFillBorderKernel>();

        concat_kernel->configure(inputs_vector.at(i), depth_offset, output);
        border_kernel->configure(inputs_vector.at(i), concat_kernel->border_size(), BorderMode::CONSTANT, PixelValue());
        _concat_kernels_vector.emplace_back(std::move(concat_kernel));
        _border_handlers_vector.emplace_back(std::move(border_kernel));

        depth_offset += inputs_vector.at(i)->info()->dimension(2);
    }
}

void GCDepthConcatenateLayer::run()
{
    for(unsigned i = 0; i < _num_inputs; i++)
    {
        GCScheduler::get().dispatch(*_border_handlers_vector[i].get(), false);
        GCScheduler::get().memory_barrier();
        GCScheduler::get().dispatch(*_concat_kernels_vector[i].get(), true);
    }
}