FFmpeg
libavfilter
vf_noise.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2013 Paul B Mahol
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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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFILTER_NOISE_H
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#define AVFILTER_NOISE_H
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#include "
libavutil/lfg.h
"
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#include "
avfilter.h
"
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#define MAX_NOISE 5120
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#define MAX_SHIFT 1024
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#define MAX_RES (MAX_NOISE-MAX_SHIFT)
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#define NOISE_UNIFORM 1
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#define NOISE_TEMPORAL 2
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#define NOISE_AVERAGED 8
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#define NOISE_PATTERN 16
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typedef
struct
FilterParams
{
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int
strength
;
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unsigned
flags
;
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AVLFG
lfg
;
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int
seed
;
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int8_t *
noise
;
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int8_t *
prev_shift
[
MAX_RES
][3];
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int
rand_shift
[
MAX_RES
];
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int
rand_shift_init
;
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}
FilterParams
;
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typedef
struct
NoiseContext
{
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const
AVClass
*
class
;
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int
nb_planes
;
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int
bytewidth
[4];
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int
height
[4];
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FilterParams
all
;
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FilterParams
param
[4];
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void (*
line_noise
)(uint8_t *
dst
,
const
uint8_t *
src
,
const
int8_t *
noise
,
int
len
,
int
shift
);
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void (*
line_noise_avg
)(uint8_t *
dst
,
const
uint8_t *
src
,
int
len
,
const
int8_t *
const
*
shift
);
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}
NoiseContext
;
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void
ff_line_noise_c
(uint8_t *
dst
,
const
uint8_t *
src
,
const
int8_t *
noise
,
int
len
,
int
shift
);
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void
ff_line_noise_avg_c
(uint8_t *
dst
,
const
uint8_t *
src
,
int
len
,
const
int8_t *
const
*
shift
);
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void
ff_noise_init_x86
(
NoiseContext
*n);
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#endif
/* AVFILTER_NOISE_H */
ff_line_noise_c
void ff_line_noise_c(uint8_t *dst, const uint8_t *src, const int8_t *noise, int len, int shift)
Definition:
vf_noise.c:166
FilterParams::lfg
AVLFG lfg
Definition:
vf_noise.h:40
FilterParams::strength
int strength
Definition:
vf_noise.h:38
FilterParams::rand_shift_init
int rand_shift_init
Definition:
vf_noise.h:45
noise
static int noise(AVBSFContext *ctx, AVPacket *pkt)
Definition:
noise.c:127
NoiseContext
Definition:
noise.c:63
FilterParams::flags
unsigned flags
Definition:
vf_noise.h:39
lfg.h
NoiseContext::height
int height[4]
Definition:
vf_noise.h:52
AVClass
Describe the class of an AVClass context structure.
Definition:
log.h:75
NoiseContext::line_noise
void(* line_noise)(uint8_t *dst, const uint8_t *src, const int8_t *noise, int len, int shift)
Definition:
vf_noise.h:55
NoiseContext::all
FilterParams all
Definition:
vf_noise.h:53
FilterParams
filter data
Definition:
mlp.h:86
AVLFG
Context structure for the Lagged Fibonacci PRNG.
Definition:
lfg.h:33
shift
static int shift(int a, int b)
Definition:
bonk.c:261
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition:
dsp.h:83
FilterParams::seed
int seed
Definition:
vf_noise.h:41
FilterParams::prev_shift
int8_t * prev_shift[MAX_RES][3]
Definition:
vf_noise.h:43
FilterParams::noise
int8_t * noise
Definition:
vf_noise.h:42
FilterParams::rand_shift
int rand_shift[MAX_RES]
Definition:
vf_noise.h:44
ff_noise_init_x86
void ff_noise_init_x86(NoiseContext *n)
Definition:
vf_noise.c:101
MAX_RES
#define MAX_RES
Definition:
vf_noise.h:30
len
int len
Definition:
vorbis_enc_data.h:426
NoiseContext::param
FilterParams param[4]
Definition:
vf_noise.h:54
avfilter.h
NoiseContext::line_noise_avg
void(* line_noise_avg)(uint8_t *dst, const uint8_t *src, int len, const int8_t *const *shift)
Definition:
vf_noise.h:56
NoiseContext::nb_planes
int nb_planes
Definition:
vf_noise.h:50
ff_line_noise_avg_c
void ff_line_noise_avg_c(uint8_t *dst, const uint8_t *src, int len, const int8_t *const *shift)
Definition:
vf_noise.c:179
NoiseContext::bytewidth
int bytewidth[4]
Definition:
vf_noise.h:51
src
#define src
Definition:
vp8dsp.c:248
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