| /* |
| * Copyright 2022 Google LLC |
| * |
| * 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 <stdlib.h> |
| |
| #include "samples/risp4ml/common/image.h" |
| |
| Image* image_new(uint16_t num_channels, uint16_t height, uint16_t width) { |
| Image* image = (Image*)malloc(sizeof(Image)); |
| if (image) { |
| image->num_channels = num_channels; |
| image->height = height; |
| image->width = width; |
| uint32_t num_pixels = width * height * num_channels; |
| image->data = (pixel_type_t*)malloc(num_pixels * sizeof(pixel_type_t)); |
| } |
| return image; |
| } |
| |
| void image_delete(Image* image) { |
| if (image) { |
| if (image->data) free(image->data); |
| free(image); |
| } |
| } |
| |
| pixel_type_t* image_pixel(Image* image, uint16_t c, uint16_t y, uint16_t x) { |
| const uint32_t stride_c = image->width * image->height; |
| const uint16_t stride_y = image->width; |
| const uint16_t stride_x = 1; |
| return (image->data + c * stride_c + y * stride_y + x * stride_x); |
| } |
| |
| pixel_type_t* image_row(Image* image, uint16_t c, uint16_t y) { |
| const uint32_t stride_c = image->width * image->height; |
| const uint16_t stride_y = image->width; |
| return (image->data + c * stride_c + y * stride_y); |
| } |