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/*
* 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/GLES_COMPUTE/kernels/GCAbsoluteDifferenceKernel.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/core/GLES_COMPUTE/GCHelpers.h"
#include "arm_compute/core/GLES_COMPUTE/GCKernelLibrary.h"
#include "arm_compute/core/GLES_COMPUTE/IGCTensor.h"
#include "arm_compute/core/GLES_COMPUTE/OpenGLES.h"
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/core/Validate.h"
#include "arm_compute/core/Window.h"
#include "support/StringSupport.h"
#include <set>
#include <string>
using namespace arm_compute;
GCAbsoluteDifferenceKernel::GCAbsoluteDifferenceKernel()
: _input1(nullptr), _input2(nullptr), _output(nullptr)
{
}
void GCAbsoluteDifferenceKernel::configure(const IGCTensor *input1, const IGCTensor *input2, IGCTensor *output)
{
ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input1, 1, DataType::U8);
ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input2, 1, DataType::U8);
ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(input1, input2, output);
_input1 = input1;
_input2 = input2;
_output = output;
constexpr unsigned int num_elems_processed_per_iteration = 4;
// Set kernel build options
std::set<std::string> build_opts;
build_opts.emplace("#define LOCAL_SIZE_X " + support::cpp11::to_string(1));
build_opts.emplace("#define LOCAL_SIZE_Y " + support::cpp11::to_string(1));
build_opts.emplace("#define LOCAL_SIZE_Z " + support::cpp11::to_string(1));
// Create kernel
_kernel = static_cast<GCKernel>(GCKernelLibrary::get().create_kernel("absdiff", build_opts));
// Configure kernel window
Window win = calculate_max_window(*input1->info(), Steps(num_elems_processed_per_iteration));
AccessWindowRectangle input1_access(input1->info(), 0, 0, 4, 1);
AccessWindowRectangle input2_access(input2->info(), 0, 0, 4, 1);
AccessWindowRectangle output_access(output->info(), 0, 0, 4, 1);
update_window_and_padding(win, input1_access, input2_access, output_access);
ValidRegion valid_region = intersect_valid_regions(input1->info()->valid_region(),
input2->info()->valid_region());
output_access.set_valid_region(win, valid_region);
IGCKernel::configure(win);
}
void GCAbsoluteDifferenceKernel::run(const Window &window)
{
ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(IGCKernel::window(), window);
_kernel.use();
Window slice = window.first_slice_window_2D();
do
{
unsigned int idx = 0;
unsigned int binding = 1; // SSBO binding starts from 1.
add_2D_tensor_argument(idx, _input1, binding++, slice);
add_2D_tensor_argument(idx, _input2, binding++, slice);
add_2D_tensor_argument(idx, _output, binding++, slice);
_kernel.update_shader_params();
enqueue(*this, slice);
}
while(window.slide_window_slice_2D(slice));
}
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