| /* | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| /** | |
| * Sum of abs(src1[x] - src2[x]) | |
| */ | |
| typedef int (*av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1, | |
| const uint8_t *src2, ptrdiff_t stride2); | |
| /** | |
| * Get a potentially optimized pointer to a Sum-of-absolute-differences | |
| * function (see the av_pixelutils_sad_fn prototype). | |
| * | |
| * @param w_bits 1<<w_bits is the requested width of the block size | |
| * @param h_bits 1<<h_bits is the requested height of the block size | |
| * @param aligned If set to 2, the returned sad function will assume src1 and | |
| * src2 addresses are aligned on the block size. | |
| * If set to 1, the returned sad function will assume src1 is | |
| * aligned on the block size. | |
| * If set to 0, the returned sad function assume no particular | |
| * alignment. | |
| * @param log_ctx context used for logging, can be NULL | |
| * | |
| * @return a pointer to the SAD function or NULL in case of error (because of | |
| * invalid parameters) | |
| */ | |
| av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, | |
| int aligned, void *log_ctx); | |