| /* |
| * Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno, |
| * and Michael Niedermeyer. |
| * |
| * Copyright (c) 2014 James Darnley <james.darnley@gmail.com> |
| * Copyright (c) 2015 Arwa Arif <arwaarif1994@gmail.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU 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 AVFILTER_EQ_H |
| #define AVFILTER_EQ_H |
| |
| #include "avfilter.h" |
| #include "libavutil/eval.h" |
| |
| static const char * const var_names[] = { |
| "contrast", |
| "brightness", |
| "saturation", |
| "gamma", |
| "gamma_weight", |
| "gamma_r", |
| "gamma_g", |
| "gamma_b", |
| NULL |
| }; |
| |
| enum var_name { |
| VAR_CONTRAST , |
| VAR_BRIGHTNESS , |
| VAR_SATURATION , |
| VAR_GAMMA , |
| VAR_GAMMA_WEIGHT , |
| VAR_GAMMA_R , |
| VAR_GAMMA_G , |
| VAR_GAMMA_B , |
| VAR_VARS_NB , |
| }; |
| |
| typedef struct EQParameters { |
| void (*adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride, |
| const uint8_t *src, int src_stride, int w, int h); |
| |
| uint8_t lut[256]; |
| |
| double brightness, contrast, gamma, gamma_weight; |
| int lut_clean; |
| |
| } EQParameters; |
| |
| typedef struct { |
| const AVClass *class; |
| |
| EQParameters param[3]; |
| |
| char *contrast_expr; |
| AVExpr *contrast_pexpr; |
| |
| char *brightness_expr; |
| AVExpr *brightness_pexpr; |
| |
| char *saturation_expr; |
| AVExpr *saturation_pexpr; |
| |
| char *gamma_expr; |
| AVExpr *gamma_pexpr; |
| |
| char *gamma_weight_expr; |
| AVExpr *gamma_weight_pexpr; |
| |
| char *gamma_r_expr; |
| AVExpr *gamma_r_pexpr; |
| |
| char *gamma_g_expr; |
| AVExpr *gamma_g_pexpr; |
| |
| char *gamma_b_expr; |
| AVExpr *gamma_b_pexpr; |
| |
| double var_values[VAR_VARS_NB]; |
| |
| void (*process)(struct EQParameters *par, uint8_t *dst, int dst_stride, |
| const uint8_t *src, int src_stride, int w, int h); |
| |
| } EQContext; |
| |
| void ff_eq_init_x86(EQContext *eq); |
| |
| #endif /* AVFILTER_EQ_H */ |