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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 | IDWTELEM *b[MAX_DWT_SUPPORT]; | |
34 | int y; | |
35 | } DWTCompose; | |
36 | ||
37 | struct DWTContext; | |
38 | ||
39 | // Possible prototypes for vertical_compose functions | |
40 | typedef void (*vertical_compose_2tap)(IDWTELEM *b0, IDWTELEM *b1, int width); | |
41 | typedef void (*vertical_compose_3tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width); | |
42 | typedef void (*vertical_compose_5tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width); | |
43 | typedef void (*vertical_compose_9tap)(IDWTELEM *dst, IDWTELEM *b[8], int width); | |
44 | ||
45 | typedef struct DWTContext { | |
46 | IDWTELEM *buffer; | |
47 | IDWTELEM *temp; | |
48 | int width; | |
49 | int height; | |
50 | int stride; | |
51 | int decomposition_count; | |
52 | int support; | |
53 | ||
54 | void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride); | |
55 | void (*vertical_compose_l0)(void); | |
56 | void (*vertical_compose_h0)(void); | |
57 | void (*vertical_compose_l1)(void); | |
58 | void (*vertical_compose_h1)(void); | |
59 | void (*vertical_compose)(void); ///< one set of lowpass and highpass combined | |
60 | void (*horizontal_compose)(IDWTELEM *b, IDWTELEM *tmp, int width); | |
61 | ||
62 | DWTCompose cs[MAX_DECOMPOSITIONS]; | |
63 | } DWTContext; | |
64 | ||
65 | enum dwt_type { | |
66 | DWT_SNOW_DAUB9_7, | |
67 | DWT_SNOW_LEGALL5_3, | |
68 | DWT_DIRAC_DD9_7, | |
69 | DWT_DIRAC_LEGALL5_3, | |
70 | DWT_DIRAC_DD13_7, | |
71 | DWT_DIRAC_HAAR0, | |
72 | DWT_DIRAC_HAAR1, | |
73 | DWT_DIRAC_FIDELITY, | |
74 | DWT_DIRAC_DAUB9_7, | |
75 | DWT_NUM_TYPES | |
76 | }; | |
77 | ||
78 | // -1 if an error occurred, e.g. the dwt_type isn't recognized | |
79 | int ff_spatial_idwt_init2(DWTContext *d, IDWTELEM *buffer, int width, int height, | |
80 | int stride, enum dwt_type type, int decomposition_count, | |
81 | IDWTELEM *temp); | |
82 | ||
83 | void ff_spatial_idwt_slice2(DWTContext *d, int y); | |
84 | ||
85 | // shared stuff for simd optimizations | |
86 | #define COMPOSE_53iL0(b0, b1, b2)\ | |
87 | (b1 - ((b0 + b2 + 2) >> 2)) | |
88 | ||
89 | #define COMPOSE_DIRAC53iH0(b0, b1, b2)\ | |
90 | (b1 + ((b0 + b2 + 1) >> 1)) | |
91 | ||
92 | #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\ | |
93 | (b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4)) | |
94 | ||
95 | #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\ | |
96 | (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5)) | |
97 | ||
98 | #define COMPOSE_HAARiL0(b0, b1)\ | |
99 | (b0 - ((b1 + 1) >> 1)) | |
100 | ||
101 | #define COMPOSE_HAARiH0(b0, b1)\ | |
102 | (b0 + b1) | |
103 | ||
104 | #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ | |
105 | (b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8)) | |
106 | ||
107 | #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ | |
108 | (b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8)) | |
109 | ||
110 | #define COMPOSE_DAUB97iL1(b0, b1, b2)\ | |
111 | (b1 - ((1817*(b0 + b2) + 2048) >> 12)) | |
112 | ||
113 | #define COMPOSE_DAUB97iH1(b0, b1, b2)\ | |
114 | (b1 - (( 113*(b0 + b2) + 64) >> 7)) | |
115 | ||
116 | #define COMPOSE_DAUB97iL0(b0, b1, b2)\ | |
117 | (b1 + (( 217*(b0 + b2) + 2048) >> 12)) | |
118 | ||
119 | #define COMPOSE_DAUB97iH0(b0, b1, b2)\ | |
120 | (b1 + ((6497*(b0 + b2) + 2048) >> 12)) | |
121 | ||
122 | ||
123 | #endif /* AVCODEC_DWT_H */ |