1 /* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 module ffmpeg.libavutil.pixelutils; 20 21 extern (C): 22 import ffmpeg; @nogc nothrow: 23 24 /** 25 * Sum of abs(src1[x] - src2[x]) 26 */ 27 alias av_pixelutils_sad_fn = int function ( 28 const(ubyte)* src1, 29 ptrdiff_t stride1, 30 const(ubyte)* src2, 31 ptrdiff_t stride2); 32 33 /** 34 * Get a potentially optimized pointer to a Sum-of-absolute-differences 35 * function (see the av_pixelutils_sad_fn prototype). 36 * 37 * @param w_bits 1<<w_bits is the requested width of the block size 38 * @param h_bits 1<<h_bits is the requested height of the block size 39 * @param aligned If set to 2, the returned sad function will assume src1 and 40 * src2 addresses are aligned on the block size. 41 * If set to 1, the returned sad function will assume src1 is 42 * aligned on the block size. 43 * If set to 0, the returned sad function assume no particular 44 * alignment. 45 * @param log_ctx context used for logging, can be NULL 46 * 47 * @return a pointer to the SAD function or NULL in case of error (because of 48 * invalid parameters) 49 */ 50 av_pixelutils_sad_fn av_pixelutils_get_sad_fn ( 51 int w_bits, 52 int h_bits, 53 int aligned, 54 void* log_ctx); 55 56 /* AVUTIL_PIXELUTILS_H */