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/*
* Copyright (c) 2020-2021 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.
*/
#pragma once
#include "arm_compute/core/Dimensions.h"
#include "arm_compute/core/Window.h"
#include "ndrange.hpp"
#include <cassert>
/* This file contains mapping between integral types used in arm_compute and arm_gemm
* These two codebases both require a degree of separation for the sake of modularity
* so maintain their own types which represent similar information.
*/
namespace arm_gemm
{
//we want to unify the maximum number of dimensions used beween arm_gemm and arm compute library
constexpr std::size_t ndrange_max =
arm_compute::Dimensions<unsigned int>::num_max_dimensions;
using ndrange_t = NDRange<ndrange_max>;
using ndcoord_t = NDCoordinate<ndrange_max>;
/* Converts an `arm_gemm::ndrange_t` to a `arm_compute::Window`
*
* As `NDRange<T>` does not not encode start positions, we specify
* the start to be zero in the produced `arm_compute::Window`
*
* @param [ndr] the `arm_gemm::ndrange_t` we wish to convert into a `arm_compute::Window`
* @returns an `arm_compute::Window` representing the same dimensional ranges as `ndr`
*/
inline arm_compute::Window to_window(const ndrange_t &ndr)
{
arm_compute::Window win;
for(unsigned int i = 0; i != ndrange_max; ++i)
{
//populate the window with the dimensions of the NDRange
win.set(i, arm_compute::Window::Dimension(0, ndr.get_size(i)));
}
return win;
}
/*
* Converts an `arm_gemm::ndcoord_t` to a `arm_compute::Window`
*
* @param [ndc] the `arm_gemm::ndcoord_t` we wish to convert into a `arm_compute::Window`
* @returns an `arm_compute::Window` representing the same dimensional ranges as `ndc`
*/
inline arm_compute::Window to_window(const ndcoord_t &ndc)
{
arm_compute::Window win;
for(unsigned int i = 0; i != ndrange_max; ++i)
{
const auto start = ndc.get_position(i);
const auto size = ndc.get_size(i);
const auto stop = start + size;
//populate the window with the dimensions of the NDRange
win.set(i, arm_compute::Window::Dimension(start, stop));
}
return win;
}
/** Convert an `arm_compute::Window` to an `arm_gemm::NDRange` of the same max dimensions
*
* It should be noted that `arm_compute::Window` specifies a `start()` and an `end()`
* where as `arm_gemm::ndrange_t` only has a size, as a result we store the delta between the range
*
* @param [win] the `arm_compute::Window` we want to convert to `arm_gemm::ndrange_t`
* @return the resultant ndrange_t
*/
inline ndrange_t to_ndrange(const arm_compute::Window &win)
{
return
{
static_cast<unsigned int>(win[0].end() - win[0].start()),
static_cast<unsigned int>(win[1].end() - win[1].start()),
static_cast<unsigned int>(win[2].end() - win[2].start()),
static_cast<unsigned int>(win[3].end() - win[3].start()),
static_cast<unsigned int>(win[4].end() - win[4].start()),
static_cast<unsigned int>(win[5].end() - win[5].start())
};
}
/** Convert an `arm_compute::Window` to an `arm_gemm::NDCoord` of the same max dimensions
*
* @param [win] the `arm_compute::Window` we want to convert to `arm_gemm::ndcoord_t`
* @return the resultant ndcoord_t
*/
inline ndcoord_t to_ndcoord(const arm_compute::Window &win)
{
return
{
{ static_cast<unsigned int>(win[0].start()), static_cast<unsigned int>(win[0].end() - win[0].start()) },
{ static_cast<unsigned int>(win[1].start()), static_cast<unsigned int>(win[1].end() - win[1].start()) },
{ static_cast<unsigned int>(win[2].start()), static_cast<unsigned int>(win[2].end() - win[2].start()) },
{ static_cast<unsigned int>(win[3].start()), static_cast<unsigned int>(win[3].end() - win[3].start()) },
{ static_cast<unsigned int>(win[4].start()), static_cast<unsigned int>(win[4].end() - win[4].start()) },
{ static_cast<unsigned int>(win[5].start()), static_cast<unsigned int>(win[5].end() - win[5].start()) }
};
}
} //namespace arm_gemm
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