Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / dirac_dwt.h
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2ba45a60
DM
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
26typedef int DWTELEM;
27typedef short IDWTELEM;
28
29#define MAX_DWT_SUPPORT 8
30#define MAX_DECOMPOSITIONS 8
31
32typedef struct DWTCompose {
33 IDWTELEM *b[MAX_DWT_SUPPORT];
34 int y;
35} DWTCompose;
36
37struct DWTContext;
38
39// Possible prototypes for vertical_compose functions
40typedef void (*vertical_compose_2tap)(IDWTELEM *b0, IDWTELEM *b1, int width);
41typedef void (*vertical_compose_3tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width);
42typedef void (*vertical_compose_5tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width);
43typedef void (*vertical_compose_9tap)(IDWTELEM *dst, IDWTELEM *b[8], int width);
44
45typedef 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
65enum 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
79int 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
83void 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 */