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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 */ |