dwt.h
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1 /*
2  * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; 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_DWT_H
22 #define AVCODEC_DWT_H
23 
24 #include <stdint.h>
25 
26 typedef int DWTELEM;
27 typedef short IDWTELEM;
28 
29 typedef struct DWTCompose {
34  int y;
35 } DWTCompose;
36 
39 typedef struct slice_buffer_s {
47 } slice_buffer;
48 
49 typedef struct DWTContext {
51  IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
52  int width);
54  void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride,
55  uint8_t **block, int b_w, int b_h, int src_x,
56  int src_y, int src_stride, slice_buffer *sb,
57  int add, uint8_t *dst8);
58 } DWTContext;
59 
60 #define MAX_DECOMPOSITIONS 8
61 
62 #define DWT_97 0
63 #define DWT_53 1
64 
65 #define liftS lift
66 #define W_AM 3
67 #define W_AO 0
68 #define W_AS 1
69 
70 #undef liftS
71 #define W_BM 1
72 #define W_BO 8
73 #define W_BS 4
74 
75 #define W_CM 1
76 #define W_CO 0
77 #define W_CS 0
78 
79 #define W_DM 3
80 #define W_DO 4
81 #define W_DS 3
82 
83 #define slice_buffer_get_line(slice_buf, line_num) \
84  ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] \
85  : ff_slice_buffer_load_line((slice_buf), \
86  (line_num)))
87 
88 int ff_slice_buffer_init(slice_buffer *buf, int line_count,
89  int max_allocated_lines, int line_width,
90  IDWTELEM *base_buffer);
95 
97  IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
98  int width);
100 void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride,
101  uint8_t **block, int b_w, int b_h, int src_x,
102  int src_y, int src_stride, slice_buffer *sb,
103  int add, uint8_t *dst8);
104 
105 int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
106 int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
107 
108 void ff_spatial_dwt(int *buffer, int *temp, int width, int height, int stride,
109  int type, int decomposition_count);
110 
112  int height, int stride_line, int type,
113  int decomposition_count);
115  slice_buffer *slice_buf, IDWTELEM *temp,
116  int width, int height, int stride_line,
117  int type, int decomposition_count, int y);
118 void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
119  int stride, int type, int decomposition_count);
120 
121 void ff_dwt_init(DWTContext *c);
122 void ff_dwt_init_x86(DWTContext *c);
123 
124 #endif /* AVCODEC_DWT_H */