FFmpeg
dirac_dwt.h
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1 /*
2  * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVCODEC_DIRAC_DWT_H
22 #define AVCODEC_DIRAC_DWT_H
23 
24 #include <stdint.h>
25 
26 typedef int DWTELEM;
27 typedef short IDWTELEM;
28 
29 #define MAX_DWT_SUPPORT 8
30 #define MAX_DECOMPOSITIONS 8
31 
32 typedef struct DWTCompose {
33  uint8_t *b[MAX_DWT_SUPPORT];
34  int y;
35 } DWTCompose;
36 
37 typedef struct DWTPlane {
38  int width;
39  int height;
40  int stride;
41  uint8_t *buf;
42  uint8_t *buf_base;
43  uint8_t *tmp;
44 } DWTPlane;
45 
46 struct DWTContext;
47 
48 // Possible prototypes for vertical_compose functions
49 typedef void (*vertical_compose_2tap)(uint8_t *b0, uint8_t *b1, int width);
50 typedef void (*vertical_compose_3tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, int width);
51 typedef void (*vertical_compose_5tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, uint8_t *b3, uint8_t *b4, int width);
52 typedef void (*vertical_compose_9tap)(uint8_t *dst, uint8_t *b[8], int width);
53 
54 typedef struct DWTContext {
55  uint8_t *buffer;
56  uint8_t *temp;
57  int width;
58  int height;
59  int stride;
61  int support;
62 
63  void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride);
64  void (*vertical_compose_l0)(void);
65  void (*vertical_compose_h0)(void);
66  void (*vertical_compose_l1)(void);
67  void (*vertical_compose_h1)(void);
68  void (*vertical_compose)(void); ///< one set of lowpass and highpass combined
69  void (*horizontal_compose)(uint8_t *b, uint8_t *tmp, int width);
70 
72 } DWTContext;
73 
74 enum dwt_type {
85 };
86 
87 // -1 if an error occurred, e.g. the dwt_type isn't recognized
91 
92 void ff_spatial_idwt_slice2(DWTContext *d, int y);
93 
94 // shared stuff for simd optimizations
95 #define COMPOSE_53iL0(b0, b1, b2)\
96  (b1 - (unsigned)((int)(b0 + (unsigned)(b2) + 2) >> 2))
97 
98 #define COMPOSE_DIRAC53iH0(b0, b1, b2)\
99  (b1 + (unsigned)((int)(b0 + (unsigned)(b2) + 1) >> 1))
100 
101 #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\
102  (int)(((unsigned)(b2) + ((int)(9U*b1 + 9U*b3 - b4 - b0 + 8) >> 4)))
103 
104 #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\
105  (int)(((unsigned)(b2) - ((int)(9U*b1 + 9U*b3 - b4 - b0 + 16) >> 5)))
106 
107 #define COMPOSE_HAARiL0(b0, b1)\
108  ((int)(b0 - (unsigned)((int)(b1 + 1U) >> 1)))
109 
110 #define COMPOSE_HAARiH0(b0, b1)\
111  ((int)(b0 + (unsigned)(b1)))
112 
113 #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
114  ((unsigned)b4 - ((int)(-8*(b0+(unsigned)b8) + 21*(b1+(unsigned)b7) - 46*(b2+(unsigned)b6) + 161*(b3+(unsigned)b5) + 128) >> 8))
115 
116 #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
117  ((unsigned)b4 + ((int)(-2*(b0+(unsigned)b8) + 10*(b1+(unsigned)b7) - 25*(b2+(unsigned)b6) + 81*(b3+(unsigned)b5) + 128) >> 8))
118 
119 #define COMPOSE_DAUB97iL1(b0, b1, b2)\
120  ((unsigned)(b1) - ((int)(1817*(b0 + (unsigned)b2) + 2048) >> 12))
121 
122 #define COMPOSE_DAUB97iH1(b0, b1, b2)\
123  ((unsigned)(b1) - ((int)( 113*(b0 + (unsigned)b2) + 64) >> 7))
124 
125 #define COMPOSE_DAUB97iL0(b0, b1, b2)\
126  ((unsigned)(b1) + ((int)( 217*(b0 + (unsigned)b2) + 2048) >> 12))
127 
128 #define COMPOSE_DAUB97iH0(b0, b1, b2)\
129  ((unsigned)(b1) + ((int)(6497*(b0 + (unsigned)b2) + 2048) >> 12))
130 
131 
132 #endif /* AVCODEC_DWT_H */
DWTPlane::buf
uint8_t * buf
Definition: dirac_dwt.h:41
ff_spatial_idwt_init
int ff_spatial_idwt_init(DWTContext *d, DWTPlane *p, enum dwt_type type, int decomposition_count, int bit_depth)
Definition: dirac_dwt.c:35
bit_depth
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:226
level
uint8_t level
Definition: svq3.c:204
MAX_DECOMPOSITIONS
#define MAX_DECOMPOSITIONS
Definition: dirac_dwt.h:30
DWT_SNOW_DAUB9_7
@ DWT_SNOW_DAUB9_7
Definition: dirac_dwt.h:75
DWTContext::cs
DWTCompose cs[MAX_DECOMPOSITIONS]
Definition: dirac_dwt.h:71
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
DWTPlane
Definition: dirac_dwt.h:37
b
#define b
Definition: input.c:40
DWTCompose::b
uint8_t * b[MAX_DWT_SUPPORT]
Definition: dirac_dwt.h:33
DWT_SNOW_LEGALL5_3
@ DWT_SNOW_LEGALL5_3
Definition: dirac_dwt.h:76
vertical_compose_2tap
void(* vertical_compose_2tap)(uint8_t *b0, uint8_t *b1, int width)
Definition: dirac_dwt.h:49
b1
static double b1(void *priv, double x, double y)
Definition: vf_xfade.c:1703
MAX_DWT_SUPPORT
#define MAX_DWT_SUPPORT
Definition: dirac_dwt.h:29
DWTContext::spatial_compose
void(* spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride)
Definition: dirac_dwt.h:63
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
DWT_DIRAC_FIDELITY
@ DWT_DIRAC_FIDELITY
Definition: dirac_dwt.h:82
DWTCompose
Definition: dirac_dwt.h:32
ff_spatial_idwt_slice2
void ff_spatial_idwt_slice2(DWTContext *d, int y)
Definition: dirac_dwt.c:66
DWTCompose::y
int y
Definition: dirac_dwt.h:34
DWTContext::width
int width
Definition: dirac_dwt.h:57
width
#define width
DWT_DIRAC_HAAR1
@ DWT_DIRAC_HAAR1
Definition: dirac_dwt.h:81
b3
static double b3(void *priv, double x, double y)
Definition: vf_xfade.c:1705
DWT_DIRAC_HAAR0
@ DWT_DIRAC_HAAR0
Definition: dirac_dwt.h:80
DWTContext::horizontal_compose
void(* horizontal_compose)(uint8_t *b, uint8_t *tmp, int width)
Definition: dirac_dwt.h:69
DWTContext::decomposition_count
int decomposition_count
Definition: dirac_dwt.h:60
DWTPlane::stride
int stride
Definition: dirac_dwt.h:40
dwt_type
dwt_type
Definition: dirac_dwt.h:74
DWTContext::temp
uint8_t * temp
Definition: dirac_dwt.h:56
DWTContext::vertical_compose_l0
void(* vertical_compose_l0)(void)
Definition: dirac_dwt.h:64
vertical_compose_5tap
void(* vertical_compose_5tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, uint8_t *b3, uint8_t *b4, int width)
Definition: dirac_dwt.h:51
DWT_DIRAC_DD13_7
@ DWT_DIRAC_DD13_7
Definition: dirac_dwt.h:79
DWTContext::vertical_compose
void(* vertical_compose)(void)
one set of lowpass and highpass combined
Definition: dirac_dwt.h:68
DWTContext::vertical_compose_l1
void(* vertical_compose_l1)(void)
Definition: dirac_dwt.h:66
b2
static double b2(void *priv, double x, double y)
Definition: vf_xfade.c:1704
DWTPlane::buf_base
uint8_t * buf_base
Definition: dirac_dwt.h:42
DWTELEM
int DWTELEM
Definition: dirac_dwt.h:26
vertical_compose_9tap
void(* vertical_compose_9tap)(uint8_t *dst, uint8_t *b[8], int width)
Definition: dirac_dwt.h:52
vertical_compose_3tap
void(* vertical_compose_3tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, int width)
Definition: dirac_dwt.h:50
DWTContext::height
int height
Definition: dirac_dwt.h:58
DWT_DIRAC_DAUB9_7
@ DWT_DIRAC_DAUB9_7
Definition: dirac_dwt.h:83
DWTContext::support
int support
Definition: dirac_dwt.h:61
ff_spatial_idwt_init_x86
void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type)
Definition: dirac_dwt_init.c:161
DWTContext
Definition: dirac_dwt.h:54
DWTContext::stride
int stride
Definition: dirac_dwt.h:59
DWTContext::vertical_compose_h0
void(* vertical_compose_h0)(void)
Definition: dirac_dwt.h:65
DWT_NUM_TYPES
@ DWT_NUM_TYPES
Definition: dirac_dwt.h:84
DWTContext::vertical_compose_h1
void(* vertical_compose_h1)(void)
Definition: dirac_dwt.h:67
d
d
Definition: ffmpeg_filter.c:156
DWT_DIRAC_LEGALL5_3
@ DWT_DIRAC_LEGALL5_3
Definition: dirac_dwt.h:78
IDWTELEM
short IDWTELEM
Definition: dirac_dwt.h:27
b0
static double b0(void *priv, double x, double y)
Definition: vf_xfade.c:1702
DWTPlane::width
int width
Definition: dirac_dwt.h:38
DWT_DIRAC_DD9_7
@ DWT_DIRAC_DD9_7
Definition: dirac_dwt.h:77
DWTContext::buffer
uint8_t * buffer
Definition: dirac_dwt.h:55
DWTPlane::tmp
uint8_t * tmp
Definition: dirac_dwt.h:43
DWTPlane::height
int height
Definition: dirac_dwt.h:39