alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021 Arm Limited. All rights reserved. |
| 3 | * SPDX-License-Identifier: Apache-2.0 |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | #include "ImageUtils.hpp" |
| 18 | |
| 19 | void convertImgIoInt8(void * data, const size_t sz) |
| 20 | { |
| 21 | uint8_t * tmp_req_data = (uint8_t *)data; |
| 22 | int8_t * tmp_signed_req_data = (int8_t *) data; |
| 23 | |
| 24 | for (size_t i = 0; i < sz; ++i) { |
| 25 | tmp_signed_req_data[i] = (int8_t)( |
| 26 | (int32_t)(tmp_req_data[i]) - 128); |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | void convertImgIoGreyscale(const uint8_t * srcPtr, uint8_t * dstPtr, const size_t sz) |
| 31 | { |
| 32 | for (size_t i = 0; i < sz; ++i, srcPtr += 3) { |
| 33 | *dstPtr++ = 0.2989 * (*srcPtr) + |
| 34 | 0.587 * (*(srcPtr+1)) + |
| 35 | 0.114 * (*(srcPtr+2)); |
| 36 | } |
| 37 | } |