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64 lines
2.0 KiB
64 lines
2.0 KiB
/* |
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at> |
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* Copyright (c) 2013 Paul B Mahol |
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* |
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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 AVFILTER_NOISE_H |
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#define AVFILTER_NOISE_H |
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#include "libavutil/lfg.h" |
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#include "avfilter.h" |
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#define MAX_NOISE 5120 |
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#define MAX_SHIFT 1024 |
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#define MAX_RES (MAX_NOISE-MAX_SHIFT) |
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#define NOISE_UNIFORM 1 |
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#define NOISE_TEMPORAL 2 |
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#define NOISE_AVERAGED 8 |
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#define NOISE_PATTERN 16 |
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typedef struct FilterParams { |
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int strength; |
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unsigned flags; |
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AVLFG lfg; |
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int seed; |
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int8_t *noise; |
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int8_t *prev_shift[MAX_RES][3]; |
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int rand_shift[MAX_RES]; |
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int rand_shift_init; |
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} FilterParams; |
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typedef struct NoiseContext { |
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const AVClass *class; |
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int nb_planes; |
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int bytewidth[4]; |
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int height[4]; |
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FilterParams all; |
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FilterParams param[4]; |
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void (*line_noise)(uint8_t *dst, const uint8_t *src, const int8_t *noise, int len, int shift); |
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void (*line_noise_avg)(uint8_t *dst, const uint8_t *src, int len, const int8_t * const *shift); |
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} NoiseContext; |
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void ff_line_noise_c(uint8_t *dst, const uint8_t *src, const int8_t *noise, int len, int shift); |
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void ff_line_noise_avg_c(uint8_t *dst, const uint8_t *src, int len, const int8_t * const *shift); |
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void ff_noise_init_x86(NoiseContext *n); |
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#endif /* AVFILTER_NOISE_H */
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