FFmpeg
vf_eq.h
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1 /*
2  * Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno,
3  * and Michael Niedermeyer.
4  *
5  * Copyright (c) 2014 James Darnley <james.darnley@gmail.com>
6  * Copyright (c) 2015 Arwa Arif <arwaarif1994@gmail.com>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License along
21  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23  */
24 
25 #ifndef AVFILTER_EQ_H
26 #define AVFILTER_EQ_H
27 
28 #include "avfilter.h"
29 #include "libavutil/eval.h"
30 
31 static const char *const var_names[] = {
32  "n", // frame count
33  "pos", // frame position
34  "r", // frame rate
35  "t", // timestamp expressed in seconds
36  NULL
37 };
38 
39 enum var_name {
45 };
46 
47 typedef struct EQParameters {
48  void (*adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride,
49  const uint8_t *src, int src_stride, int w, int h);
50 
51  uint8_t lut[256];
52 
54  int lut_clean;
55 
56 } EQParameters;
57 
58 typedef struct EQContext {
59  const AVClass *class;
60 
62 
65  double contrast;
66 
69  double brightness;
70 
73  double saturation;
74 
75  char *gamma_expr;
77  double gamma;
78 
81  double gamma_weight;
82 
83  char *gamma_r_expr;
85  double gamma_r;
86 
87  char *gamma_g_expr;
89  double gamma_g;
90 
91  char *gamma_b_expr;
93  double gamma_b;
94 
95  double var_values[VAR_NB];
96 
97  void (*process)(struct EQParameters *par, uint8_t *dst, int dst_stride,
98  const uint8_t *src, int src_stride, int w, int h);
99 
101 } EQContext;
102 
103 void ff_eq_init(EQContext *eq);
105 
106 #endif /* AVFILTER_EQ_H */
EQParameters::gamma_weight
double gamma_weight
Definition: vf_eq.h:53
EQContext::gamma_expr
char * gamma_expr
Definition: vf_eq.h:75
EQParameters::gamma
double gamma
Definition: vf_eq.h:53
EQContext::gamma_pexpr
AVExpr * gamma_pexpr
Definition: vf_eq.h:76
w
uint8_t w
Definition: llviddspenc.c:39
EQContext::EvalMode
EvalMode
Definition: vf_eq.h:100
VAR_POS
@ VAR_POS
Definition: vf_eq.h:41
EQContext::gamma_weight
double gamma_weight
Definition: vf_eq.h:81
EQContext::param
EQParameters param[3]
Definition: vf_eq.h:61
EQContext::brightness_expr
char * brightness_expr
Definition: vf_eq.h:67
eq
#define eq(A, B)
Definition: vf_xbr.c:91
VAR_NB
@ VAR_NB
Definition: vf_eq.h:44
var_name
var_name
Definition: setts_bsf.c:50
VAR_R
@ VAR_R
Definition: vf_eq.h:42
EQContext::saturation_pexpr
AVExpr * saturation_pexpr
Definition: vf_eq.h:72
EQParameters
Definition: vf_eq.h:47
AVExpr
Definition: eval.c:157
EQContext::gamma_g_expr
char * gamma_g_expr
Definition: vf_eq.h:87
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
EQContext::brightness
double brightness
Definition: vf_eq.h:69
EQContext::saturation
double saturation
Definition: vf_eq.h:73
NULL
#define NULL
Definition: coverity.c:32
ff_eq_init_x86
void ff_eq_init_x86(EQContext *eq)
Definition: vf_eq_init.c:65
EQContext::gamma_weight_expr
char * gamma_weight_expr
Definition: vf_eq.h:79
src
#define src
Definition: vp8dsp.c:255
EQContext::gamma_weight_pexpr
AVExpr * gamma_weight_pexpr
Definition: vf_eq.h:80
EQContext::eval_mode
enum EQContext::EvalMode eval_mode
var_names
static const char *const var_names[]
Definition: vf_eq.h:31
VAR_N
@ VAR_N
Definition: vf_eq.h:40
EQContext::gamma_r
double gamma_r
Definition: vf_eq.h:85
eval.h
EQContext
Definition: vf_eq.h:58
EQParameters::contrast
double contrast
Definition: vf_eq.h:53
EQContext::saturation_expr
char * saturation_expr
Definition: vf_eq.h:71
EQContext::contrast
double contrast
Definition: vf_eq.h:65
EQContext::gamma_b_expr
char * gamma_b_expr
Definition: vf_eq.h:91
EQContext::contrast_pexpr
AVExpr * contrast_pexpr
Definition: vf_eq.h:64
VAR_T
@ VAR_T
Definition: vf_eq.h:43
EQParameters::adjust
void(* adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int w, int h)
Definition: vf_eq.h:48
EQContext::EVAL_MODE_NB
@ EVAL_MODE_NB
Definition: vf_eq.h:100
ff_eq_init
void ff_eq_init(EQContext *eq)
Definition: vf_eq.c:177
EQContext::gamma_b
double gamma_b
Definition: vf_eq.h:93
EQParameters::brightness
double brightness
Definition: vf_eq.h:53
EQParameters::lut
uint8_t lut[256]
Definition: vf_eq.h:51
avfilter.h
EQContext::var_values
double var_values[VAR_NB]
Definition: vf_eq.h:95
EQContext::contrast_expr
char * contrast_expr
Definition: vf_eq.h:63
EQContext::brightness_pexpr
AVExpr * brightness_pexpr
Definition: vf_eq.h:68
EQContext::gamma_g
double gamma_g
Definition: vf_eq.h:89
EQContext::EVAL_MODE_FRAME
@ EVAL_MODE_FRAME
Definition: vf_eq.h:100
EQParameters::lut_clean
int lut_clean
Definition: vf_eq.h:54
EQContext::EVAL_MODE_INIT
@ EVAL_MODE_INIT
Definition: vf_eq.h:100
EQContext::gamma_g_pexpr
AVExpr * gamma_g_pexpr
Definition: vf_eq.h:88
EQContext::gamma_r_expr
char * gamma_r_expr
Definition: vf_eq.h:83
EQContext::gamma
double gamma
Definition: vf_eq.h:77
EQContext::gamma_b_pexpr
AVExpr * gamma_b_pexpr
Definition: vf_eq.h:92
EQContext::process
void(* process)(struct EQParameters *par, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int w, int h)
Definition: vf_eq.h:97
h
h
Definition: vp9dsp_template.c:2038
EQContext::gamma_r_pexpr
AVExpr * gamma_r_pexpr
Definition: vf_eq.h:84