| 1220 | } |
| 1221 | |
| 1222 | static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) |
| 1223 | { |
| 1224 | int row; |
| 1225 | size_t bytes_per_row = (size_t)w * bytes_per_pixel; |
| 1226 | stbi_uc temp[2048]; |
| 1227 | stbi_uc *bytes = (stbi_uc *)image; |
| 1228 | |
| 1229 | for (row = 0; row < (h>>1); row++) { |
| 1230 | stbi_uc *row0 = bytes + row*bytes_per_row; |
| 1231 | stbi_uc *row1 = bytes + (h - row - 1)*bytes_per_row; |
| 1232 | // swap row0 with row1 |
| 1233 | size_t bytes_left = bytes_per_row; |
| 1234 | while (bytes_left) { |
| 1235 | size_t bytes_copy = (bytes_left < sizeof(temp)) ? bytes_left : sizeof(temp); |
| 1236 | memcpy(temp, row0, bytes_copy); |
| 1237 | memcpy(row0, row1, bytes_copy); |
| 1238 | memcpy(row1, temp, bytes_copy); |
| 1239 | row0 += bytes_copy; |
| 1240 | row1 += bytes_copy; |
| 1241 | bytes_left -= bytes_copy; |
| 1242 | } |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | #ifndef STBI_NO_GIF |
| 1247 | static void stbi__vertical_flip_slices(void *image, int w, int h, int z, int bytes_per_pixel) |
no outgoing calls
no test coverage detected