123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104 |
- /*
- * 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 */
|