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libavfilter
vf_eq.h
Go to the documentation of this file.
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/*
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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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"n"
,
// frame count
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"pos"
,
// frame position
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"r"
,
// frame rate
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"t"
,
// timestamp expressed in seconds
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NULL
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};
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enum
var_name
{
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VAR_N
,
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VAR_POS
,
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VAR_R
,
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VAR_T
,
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VAR_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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double
contrast
;
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char
*
brightness_expr
;
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AVExpr
*
brightness_pexpr
;
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double
brightness
;
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char
*
saturation_expr
;
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AVExpr
*
saturation_pexpr
;
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double
saturation
;
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char
*
gamma_expr
;
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AVExpr
*
gamma_pexpr
;
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double
gamma
;
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char
*
gamma_weight_expr
;
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AVExpr
*
gamma_weight_pexpr
;
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double
gamma_weight
;
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char
*
gamma_r_expr
;
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AVExpr
*
gamma_r_pexpr
;
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double
gamma_r
;
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char
*
gamma_g_expr
;
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AVExpr
*
gamma_g_pexpr
;
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double
gamma_g
;
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char
*
gamma_b_expr
;
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AVExpr
*
gamma_b_pexpr
;
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double
gamma_b
;
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double
var_values[
VAR_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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enum
EvalMode
{
EVAL_MODE_INIT
,
EVAL_MODE_FRAME
,
EVAL_MODE_NB
} eval_mode;
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}
EQContext
;
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void
ff_eq_init_x86
(
EQContext
*
eq
);
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#endif
/* AVFILTER_EQ_H */
EQContext::gamma_b_expr
char * gamma_b_expr
Definition:
vf_eq.h:91
VAR_T
Definition:
vf_eq.h:43
NULL
#define NULL
Definition:
coverity.c:32
EQContext::gamma_weight_expr
char * gamma_weight_expr
Definition:
vf_eq.h:79
EQContext::gamma_weight_pexpr
AVExpr * gamma_weight_pexpr
Definition:
vf_eq.h:80
EQContext::gamma_g_expr
char * gamma_g_expr
Definition:
vf_eq.h:87
h
h
Definition:
vp9dsp_template.c:2093
EQParameters
Definition:
vf_eq.h:47
avfilter.h
Main libavfilter public API header.
VAR_NB
Definition:
vf_eq.h:44
EQParameters::contrast
double contrast
Definition:
vf_eq.h:53
EQContext::brightness_pexpr
AVExpr * brightness_pexpr
Definition:
vf_eq.h:68
EQContext::contrast_pexpr
AVExpr * contrast_pexpr
Definition:
vf_eq.h:64
ff_eq_init_x86
void ff_eq_init_x86(EQContext *eq)
Definition:
vf_eq.c:87
uint8_t
uint8_t
Definition:
audio_convert.c:194
EQParameters::lut
uint8_t lut[256]
Definition:
vf_eq.h:51
EQContext::gamma_b
double gamma_b
Definition:
vf_eq.h:93
AVExpr
Definition:
eval.c:148
EQContext::contrast_expr
char * contrast_expr
Definition:
vf_eq.h:63
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::gamma_g_pexpr
AVExpr * gamma_g_pexpr
Definition:
vf_eq.h:88
EQContext::gamma_b_pexpr
AVExpr * gamma_b_pexpr
Definition:
vf_eq.h:92
VAR_POS
Definition:
vf_eq.h:41
EQParameters::lut_clean
int lut_clean
Definition:
vf_eq.h:54
EQContext::gamma_g
double gamma_g
Definition:
vf_eq.h:89
EVAL_MODE_INIT
Definition:
vf_overlay.c:96
EQContext::gamma_r_expr
char * gamma_r_expr
Definition:
vf_eq.h:83
eq
#define eq(A, B)
Definition:
vf_xbr.c:87
var_name
var_name
Definition:
aeval.c:46
var_names
static const char *const var_names[]
Definition:
vf_eq.h:31
EQParameters::gamma_weight
double gamma_weight
Definition:
vf_eq.h:53
EQContext::gamma_r_pexpr
AVExpr * gamma_r_pexpr
Definition:
vf_eq.h:84
void
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
process
int(* process)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition:
vf_signalstats.c:310
EQContext
Definition:
vf_eq.h:58
EQContext::brightness_expr
char * brightness_expr
Definition:
vf_eq.h:67
EQContext::gamma
double gamma
Definition:
vf_eq.h:77
src
#define src
Definition:
vp9dsp.c:530
EQContext::gamma_pexpr
AVExpr * gamma_pexpr
Definition:
vf_eq.h:76
EQContext::gamma_weight
double gamma_weight
Definition:
vf_eq.h:81
EQParameters::brightness
double brightness
Definition:
vf_eq.h:53
VAR_N
Definition:
vf_eq.h:40
VAR_R
Definition:
vf_eq.h:42
EQContext::gamma_expr
char * gamma_expr
Definition:
vf_eq.h:75
AVClass
Describe the class of an AVClass context structure.
Definition:
log.h:67
EQContext::saturation_pexpr
AVExpr * saturation_pexpr
Definition:
vf_eq.h:72
EQParameters::gamma
double gamma
Definition:
vf_eq.h:53
EQContext::EvalMode
EvalMode
Definition:
vf_eq.h:100
EQContext::brightness
double brightness
Definition:
vf_eq.h:69
EVAL_MODE_NB
Definition:
af_volume.h:42
EQContext::saturation
double saturation
Definition:
vf_eq.h:73
EQContext::gamma_r
double gamma_r
Definition:
vf_eq.h:85
EVAL_MODE_FRAME
Definition:
af_volume.h:41
EQContext::saturation_expr
char * saturation_expr
Definition:
vf_eq.h:71
eval.h
simple arithmetic expression evaluator
EQContext::contrast
double contrast
Definition:
vf_eq.h:65
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