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/*
* Copyright (c) 2021 Arm Limited. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*/
#include "ImageUtils.hpp"
void convertImgIoInt8(void * data, const size_t sz)
{
uint8_t * tmp_req_data = (uint8_t *)data;
int8_t * tmp_signed_req_data = (int8_t *) data;
for (size_t i = 0; i < sz; ++i) {
tmp_signed_req_data[i] = (int8_t)(
(int32_t)(tmp_req_data[i]) - 128);
}
}
void convertImgIoGreyscale(const uint8_t * srcPtr, uint8_t * dstPtr, const size_t sz)
{
for (size_t i = 0; i < sz; ++i, srcPtr += 3) {
*dstPtr++ = 0.2989 * (*srcPtr) +
0.587 * (*(srcPtr+1)) +
0.114 * (*(srcPtr+2));
}
}
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