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105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
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* Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno,
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* and Michael Niedermeyer.
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*
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* Copyright (c) 2014 James Darnley <james.darnley@gmail.com>
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* Copyright (c) 2015 Arwa Arif <arwaarif1994@gmail.com>
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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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef AVFILTER_EQ_H
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#define AVFILTER_EQ_H
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#include "avfilter.h"
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#include "libavutil/eval.h"
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static const char * const var_names[] = {
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"contrast",
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"brightness",
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"saturation",
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"gamma",
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"gamma_weight",
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"gamma_r",
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"gamma_g",
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"gamma_b",
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NULL
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};
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enum var_name {
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VAR_CONTRAST ,
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VAR_BRIGHTNESS ,
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VAR_SATURATION ,
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VAR_GAMMA ,
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VAR_GAMMA_WEIGHT ,
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VAR_GAMMA_R ,
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VAR_GAMMA_G ,
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VAR_GAMMA_B ,
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VAR_VARS_NB ,
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};
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typedef struct EQParameters {
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void (*adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride,
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const uint8_t *src, int src_stride, int w, int h);
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uint8_t lut[256];
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double brightness, contrast, gamma, gamma_weight;
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int lut_clean;
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} EQParameters;
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typedef struct {
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const AVClass *class;
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EQParameters param[3];
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char *contrast_expr;
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AVExpr *contrast_pexpr;
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char *brightness_expr;
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AVExpr *brightness_pexpr;
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char *saturation_expr;
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AVExpr *saturation_pexpr;
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char *gamma_expr;
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AVExpr *gamma_pexpr;
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char *gamma_weight_expr;
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AVExpr *gamma_weight_pexpr;
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char *gamma_r_expr;
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AVExpr *gamma_r_pexpr;
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char *gamma_g_expr;
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AVExpr *gamma_g_pexpr;
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char *gamma_b_expr;
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AVExpr *gamma_b_pexpr;
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double var_values[VAR_VARS_NB];
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void (*process)(struct EQParameters *par, uint8_t *dst, int dst_stride,
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const uint8_t *src, int src_stride, int w, int h);
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} EQContext;
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void ff_eq_init_x86(EQContext *eq);
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#endif /* AVFILTER_EQ_H */
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