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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file Utils.h
* @ingroup COM_AI_RUNTIME
* @brief This file defines utility functions used in internal::nnapi::feature namespace
*/
#ifndef __INTERNAL_NNAPI_FEATURE_UTILS_H__
#define __INTERNAL_NNAPI_FEATURE_UTILS_H__
#include "misc/feature/Shape.h"
namespace internal
{
namespace nnapi
{
namespace feature
{
/**
* @brief Get position of element using channel, row, and column for 3D feature
* @param[in] shape Shape of feature
* @param[in] ch Channel index
* @param[in] row Row index
* @param[in] col Column index
* @return Position of element
*/
inline uint32_t index_of(const ::nnfw::misc::feature::Shape &shape, uint32_t ch, uint32_t row,
uint32_t col)
{
uint32_t res = 0;
// NNAPI uses NHWC ordering
res += row * shape.W * shape.C;
res += col * shape.C;
res += ch;
return res;
}
/**
* @brief Get position of element using batch, channel, row, and column for 4D feature
* @param[in] shape Shape of feature
* @param[in] batch Batch index
* @param[in] ch Channel index
* @param[in] row Row index
* @param[in] col Column index
* @return Position of element
*/
inline uint32_t index_of(const ::nnfw::misc::feature::Shape &shape, uint32_t batch, uint32_t ch,
uint32_t row, uint32_t col)
{
uint32_t res = 0;
// NNAPI uses NHWC ordering
res += batch * shape.H * shape.W * shape.C;
res += row * shape.W * shape.C;
res += col * shape.C;
res += ch;
return res;
}
} // namespace feature
} // namespace nnapi
} // namespace internal
#endif // __INTERNAL_NNAPI_FEATURE_UTILS_H__
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