blob: 36f9f919bdeb90446249e79af89256f377465f7f
1 | /* |
2 | * RealVideo 4 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 RV40 tables |
25 | */ |
26 | |
27 | #ifndef AVCODEC_RV40DATA_H |
28 | #define AVCODEC_RV40DATA_H |
29 | |
30 | #include <stdint.h> |
31 | |
32 | /** |
33 | * standard widths and heights coded in RV40 |
34 | */ |
35 | //@{ |
36 | static const int rv40_standard_widths[] = { 160, 172, 240, 320, 352, 640, 704, 0}; |
37 | static const int rv40_standard_heights[] = { 120, 132, 144, 240, 288, 480, -8, -10, 180, 360, 576, 0}; |
38 | //@} |
39 | |
40 | #define MODE2_PATTERNS_NUM 20 |
41 | /** |
42 | * intra types table |
43 | * |
44 | * These values are actually coded 3-tuples |
45 | * used for detecting standard block configurations. |
46 | */ |
47 | static const uint16_t rv40_aic_table_index[MODE2_PATTERNS_NUM] = { |
48 | 0x000, 0x100, 0x200, |
49 | 0x011, 0x111, 0x211, 0x511, 0x611, |
50 | 0x022, 0x122, 0x222, 0x722, |
51 | 0x272, 0x227, |
52 | 0x822, 0x282, 0x228, |
53 | 0x112, 0x116, 0x221 |
54 | }; |
55 | |
56 | /** |
57 | * luma quantizer values |
58 | * The second table is used for inter blocks. |
59 | */ |
60 | static const uint8_t rv40_luma_dc_quant[2][32] = { |
61 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
62 | 16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 20, 22, 22, 22, 22 }, |
63 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
64 | 16, 17, 18, 19, 20, 20, 21, 21, 22, 23, 23, 23, 24, 24, 24, 24 } |
65 | }; |
66 | |
67 | /** |
68 | * @name Coefficients used by the RV40 loop filter |
69 | * @{ |
70 | */ |
71 | |
72 | /** alpha parameter for RV40 loop filter - almost the same as in JVT-A003r1 */ |
73 | static const uint8_t rv40_alpha_tab[32] = { |
74 | 128, 128, 128, 128, 128, 128, 128, 128, |
75 | 128, 128, 122, 96, 75, 59, 47, 37, |
76 | 29, 23, 18, 15, 13, 11, 10, 9, |
77 | 8, 7, 6, 5, 4, 3, 2, 1 |
78 | }; |
79 | /** beta parameter for RV40 loop filter - almost the same as in JVT-A003r1 */ |
80 | static const uint8_t rv40_beta_tab[32] = { |
81 | 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 4, 4, 4, 6, 6, |
82 | 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 14, 15, 16, 17 |
83 | }; |
84 | /** clip table for RV40 loop filter - the same as in JVT-A003r1 */ |
85 | static const uint8_t rv40_filter_clip_tbl[3][32] = { |
86 | { |
87 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
88 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
89 | }, |
90 | { |
91 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, |
92 | 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5 |
93 | }, |
94 | { |
95 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, |
96 | 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 5, 7, 8, 9 |
97 | } |
98 | }; |
99 | /** @} */ // end loopfilter group |
100 | |
101 | #endif /* AVCODEC_RV40DATA_H */ |
102 |