FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
rv30data.h
Go to the documentation of this file.
1 /*
2  * RealVideo 3 decoder
3  * copyright (c) 2007 Konstantin Shishkov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * miscellaneous RV30 tables
25  */
26 
27 #ifndef AVCODEC_RV30DATA_H
28 #define AVCODEC_RV30DATA_H
29 
30 #include <stdint.h>
31 
32 /** DC quantizer mapping for RV30 */
33 static const uint8_t rv30_luma_dc_quant[32] = {
34  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
35  16, 17, 18, 19, 20, 21, 22, 22, 22, 23, 23, 23, 24, 24, 25, 25
36 };
37 
38 /**
39  * This table is used for storing the differences
40  * between the predicted and the real intra type.
41  */
42 static const uint8_t rv30_itype_code[9*9*2] = {
43  0, 0, 0, 1, 1, 0, 1, 1, 0, 2, 2, 0, 0, 3, 3, 0, 1, 2,
44  2, 1, 0, 4, 4, 0, 3, 1, 1, 3, 0, 5, 5, 0, 2, 2, 1, 4,
45  4, 1, 0, 6, 3, 2, 1, 5, 2, 3, 5, 1, 6, 0, 0, 7, 4, 2,
46  2, 4, 3, 3, 6, 1, 1, 6, 7, 0, 0, 8, 5, 2, 4, 3, 2, 5,
47  3, 4, 1, 7, 4, 4, 7, 1, 8, 0, 6, 2, 3, 5, 5, 3, 2, 6,
48  1, 8, 2, 7, 7, 2, 8, 1, 5, 4, 4, 5, 3, 6, 6, 3, 8, 2,
49  4, 6, 5, 5, 6, 4, 2, 8, 7, 3, 3, 7, 6, 5, 5, 6, 7, 4,
50  4, 7, 8, 3, 3, 8, 7, 5, 8, 4, 5, 7, 4, 8, 6, 6, 7, 6,
51  5, 8, 8, 5, 6, 7, 8, 6, 7, 7, 6, 8, 8, 7, 7, 8, 8, 8,
52 };
53 
54 /**
55  * This table is used for retrieving the current intra type
56  * based on its neighbors and adjustment provided by
57  * code read and decoded before.
58  *
59  * This is really a three-dimensional matrix with dimensions
60  * [-1..9][-1..9][0..9]. The first and second coordinates are
61  * detemined by the top and left neighbors (-1 if unavailable).
62  */
63 static const uint8_t rv30_itype_from_context[900] = {
64  0, 9, 9, 9, 9, 9, 9, 9, 9,
65  0, 2, 9, 9, 9, 9, 9, 9, 9,
66  9, 9, 9, 9, 9, 9, 9, 9, 9,
67  2, 0, 9, 9, 9, 9, 9, 9, 9,
68  9, 9, 9, 9, 9, 9, 9, 9, 9,
69  9, 9, 9, 9, 9, 9, 9, 9, 9,
70  9, 9, 9, 9, 9, 9, 9, 9, 9,
71  9, 9, 9, 9, 9, 9, 9, 9, 9,
72  9, 9, 9, 9, 9, 9, 9, 9, 9,
73  9, 9, 9, 9, 9, 9, 9, 9, 9,
74 
75  0, 1, 9, 9, 9, 9, 9, 9, 9,
76  0, 2, 1, 6, 4, 8, 5, 7, 3,
77  1, 0, 2, 6, 5, 4, 3, 8, 7,
78  2, 8, 0, 1, 7, 4, 3, 6, 5,
79  2, 0, 1, 3, 8, 5, 4, 7, 6,
80  2, 0, 1, 4, 6, 7, 8, 3, 5,
81  0, 1, 5, 2, 6, 3, 8, 4, 7,
82  0, 1, 6, 2, 4, 7, 5, 8, 3,
83  2, 7, 0, 1, 4, 8, 6, 3, 5,
84  2, 8, 0, 1, 7, 3, 4, 5, 6,
85 
86  1, 0, 9, 9, 9, 9, 9, 9, 9,
87  1, 2, 5, 6, 3, 0, 4, 8, 7,
88  1, 6, 2, 5, 3, 0, 4, 8, 7,
89  2, 1, 7, 6, 8, 3, 5, 0, 4,
90  1, 2, 5, 3, 6, 8, 4, 7, 0,
91  1, 6, 2, 0, 4, 5, 8, 7, 3,
92  1, 5, 2, 6, 3, 8, 4, 0, 7,
93  1, 6, 0, 2, 4, 5, 7, 3, 8,
94  2, 1, 7, 6, 0, 8, 5, 4, 3,
95  1, 2, 7, 8, 3, 4, 5, 6, 0,
96 
97  9, 9, 9, 9, 9, 9, 9, 9, 9,
98  0, 2, 1, 8, 7, 6, 5, 4, 3,
99  1, 2, 0, 6, 5, 7, 4, 8, 3,
100  2, 8, 7, 1, 0, 6, 4, 3, 5,
101  2, 0, 8, 1, 3, 7, 5, 4, 6,
102  2, 0, 4, 1, 7, 8, 6, 3, 5,
103  2, 0, 1, 5, 8, 4, 6, 7, 3,
104  2, 0, 6, 1, 4, 7, 8, 5, 3,
105  2, 7, 8, 1, 0, 5, 4, 6, 3,
106  2, 8, 7, 1, 0, 4, 3, 6, 5,
107 
108  9, 9, 9, 9, 9, 9, 9, 9, 9,
109  0, 2, 1, 3, 5, 8, 6, 4, 7,
110  1, 0, 2, 5, 3, 6, 4, 8, 7,
111  2, 8, 1, 0, 3, 5, 7, 6, 4,
112  3, 2, 5, 8, 1, 4, 6, 7, 0,
113  4, 2, 0, 6, 1, 5, 8, 3, 7,
114  5, 3, 1, 2, 8, 6, 4, 0, 7,
115  1, 6, 0, 2, 4, 5, 8, 3, 7,
116  2, 7, 0, 1, 5, 4, 8, 6, 3,
117  2, 8, 3, 5, 1, 0, 7, 6, 4,
118 
119  9, 9, 9, 9, 9, 9, 9, 9, 9,
120  2, 0, 6, 1, 4, 7, 5, 8, 3,
121  1, 6, 2, 0, 4, 5, 3, 7, 8,
122  2, 8, 7, 6, 4, 0, 1, 5, 3,
123  4, 2, 1, 0, 6, 8, 3, 5, 7,
124  4, 2, 6, 0, 1, 5, 7, 8, 3,
125  1, 2, 5, 0, 6, 3, 4, 7, 8,
126  6, 4, 0, 1, 2, 7, 5, 3, 8,
127  2, 7, 4, 6, 0, 1, 8, 5, 3,
128  2, 8, 7, 4, 6, 1, 3, 5, 0,
129 
130  9, 9, 9, 9, 9, 9, 9, 9, 9,
131  5, 1, 2, 3, 6, 8, 0, 4, 7,
132  1, 5, 6, 3, 2, 0, 4, 8, 7,
133  2, 1, 5, 3, 6, 8, 7, 4, 0,
134  5, 3, 1, 2, 6, 8, 4, 7, 0,
135  1, 6, 2, 4, 5, 8, 0, 3, 7,
136  5, 1, 3, 6, 2, 0, 8, 4, 7,
137  1, 6, 5, 2, 0, 4, 3, 7, 8,
138  2, 7, 1, 6, 5, 0, 8, 3, 4,
139  2, 5, 1, 3, 6, 8, 4, 0, 7,
140 
141  9, 9, 9, 9, 9, 9, 9, 9, 9,
142  1, 6, 2, 0, 5, 4, 3, 7, 8,
143  1, 6, 5, 4, 2, 3, 0, 7, 8,
144  2, 1, 6, 7, 4, 8, 5, 3, 0,
145  2, 1, 6, 5, 8, 4, 3, 0, 7,
146  6, 4, 1, 2, 0, 5, 7, 8, 3,
147  1, 6, 5, 2, 3, 0, 4, 8, 7,
148  6, 1, 4, 0, 2, 7, 5, 3, 8,
149  2, 7, 4, 6, 1, 5, 0, 8, 3,
150  2, 1, 6, 8, 4, 7, 3, 5, 0,
151 
152  9, 9, 9, 9, 9, 9, 9, 9, 9,
153  2, 0, 4, 7, 6, 1, 8, 5, 3,
154  6, 1, 2, 0, 4, 7, 5, 8, 3,
155  2, 7, 8, 0, 1, 6, 4, 3, 5,
156  2, 4, 0, 8, 3, 1, 7, 6, 5,
157  4, 2, 7, 0, 6, 1, 8, 5, 3,
158  2, 1, 0, 8, 5, 6, 7, 4, 3,
159  2, 6, 4, 1, 7, 0, 5, 8, 3,
160  2, 7, 4, 0, 8, 6, 1, 5, 3,
161  2, 8, 7, 4, 1, 0, 3, 6, 5,
162 
163  9, 9, 9, 9, 9, 9, 9, 9, 9,
164  2, 0, 8, 1, 3, 4, 6, 5, 7,
165  1, 2, 0, 6, 8, 5, 7, 3, 4,
166  2, 8, 7, 1, 0, 3, 6, 5, 4,
167  8, 3, 2, 5, 1, 0, 4, 7, 6,
168  2, 0, 4, 8, 5, 1, 7, 6, 3,
169  2, 1, 0, 8, 5, 3, 6, 4, 7,
170  2, 1, 6, 0, 8, 4, 5, 7, 3,
171  2, 7, 8, 4, 0, 6, 1, 5, 3,
172  2, 8, 3, 0, 7, 4, 1, 6, 5,
173 };
174 
175 /**
176  * Loop filter limits are taken from this table.
177  */
178 static const uint8_t rv30_loop_filt_lim[32] = {
179  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5
180 };
181 #endif /* AVCODEC_RV30DATA_H */