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