blob: 506040f5280dfdc223d351be0286d1d4351aeed1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/*
* 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 = static_cast<uint8_t *>(data);
int8_t * tmp_signed_req_data = static_cast<int8_t *>(data);
for (size_t i = 0; i < sz; ++i) {
tmp_signed_req_data[i] = static_cast<int8_t>(
static_cast<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));
}
}
|
