/*
  * 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>
 #include "common.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 */