| /* |
| * 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 |
| */ |
| |
| #ifndef AVUTIL_PIXELUTILS_H |
| #define AVUTIL_PIXELUTILS_H |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| /** |
| * 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); |
| |
| #endif /* AVUTIL_PIXELUTILS_H */ |
