| 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 */ |