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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * RealVideo 4 decoder |
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| 3 | * copyright (c) 2007 Konstantin Shishkov |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * @file |
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| 24 | * miscellaneous RV30/40 tables |
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| 25 | */ |
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| 26 | |||
| 27 | #ifndef AVCODEC_RV34DATA_H |
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| 28 | #define AVCODEC_RV34DATA_H |
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| 29 | |||
| 30 | #include |
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| 31 | |||
| 32 | /** |
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| 33 | * number of ones in nibble minus one |
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| 34 | */ |
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| 35 | static const uint8_t rv34_count_ones[16] = { |
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| 36 | 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 2, 1, 2, 2, 3 |
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| 37 | }; |
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| 38 | |||
| 39 | /** |
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| 40 | * values used to reconstruct coded block pattern |
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| 41 | */ |
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| 42 | static const uint8_t rv34_cbp_code[16] = { |
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| 43 | 0x00, 0x20, 0x10, 0x30, 0x02, 0x22, 0x12, 0x32, |
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| 44 | 0x01, 0x21, 0x11, 0x31, 0x03, 0x23, 0x13, 0x33 |
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| 45 | }; |
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| 46 | |||
| 47 | /** |
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| 48 | * precalculated results of division by three and modulo three for values 0-107 |
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| 49 | * |
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| 50 | * A lot of four-tuples in RV40 are represented as c0*27+c1*9+c2*3+c3. |
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| 51 | * This table allows conversion from a value back to a vector. |
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| 52 | */ |
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| 53 | static const uint8_t modulo_three_table[108] = { |
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| 54 | 0x00, 0x01, 0x02, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0A, |
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| 55 | 0x10, 0x11, 0x12, 0x14, 0x15, 0x16, 0x18, 0x19, 0x1A, |
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| 56 | 0x20, 0x21, 0x22, 0x24, 0x25, 0x26, 0x28, 0x29, 0x2A, |
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| 57 | |||
| 58 | 0x40, 0x41, 0x42, 0x44, 0x45, 0x46, 0x48, 0x49, 0x4A, |
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| 59 | 0x50, 0x51, 0x52, 0x54, 0x55, 0x56, 0x58, 0x59, 0x5A, |
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| 60 | 0x60, 0x61, 0x62, 0x64, 0x65, 0x66, 0x68, 0x69, 0x6A, |
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| 61 | |||
| 62 | 0x80, 0x81, 0x82, 0x84, 0x85, 0x86, 0x88, 0x89, 0x8A, |
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| 63 | 0x90, 0x91, 0x92, 0x94, 0x95, 0x96, 0x98, 0x99, 0x9A, |
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| 64 | 0xA0, 0xA1, 0xA2, 0xA4, 0xA5, 0xA6, 0xA8, 0xA9, 0xAA, |
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| 65 | |||
| 66 | 0xC0, 0xC1, 0xC2, 0xC4, 0xC5, 0xC6, 0xC8, 0xC9, 0xCA, |
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| 67 | 0xD0, 0xD1, 0xD2, 0xD4, 0xD5, 0xD6, 0xD8, 0xD9, 0xDA, |
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| 68 | 0xE0, 0xE1, 0xE2, 0xE4, 0xE5, 0xE6, 0xE8, 0xE9, 0xEA, |
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| 69 | }; |
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| 70 | |||
| 71 | /** |
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| 72 | * quantizer values used for AC and DC coefficients in chroma blocks |
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| 73 | */ |
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| 74 | static const uint8_t rv34_chroma_quant[2][32] = { |
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| 75 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
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| 76 | 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 25 }, |
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| 77 | { 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, |
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| 78 | 14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23 } |
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| 79 | }; |
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| 80 | |||
| 81 | /** |
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| 82 | * This table is used for dequantizing. |
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| 83 | */ |
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| 84 | static const uint16_t rv34_qscale_tab[32] = { |
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| 85 | 60, 67, 76, 85, 96, 108, 121, 136, |
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| 86 | 152, 171, 192, 216, 242, 272, 305, 341, |
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| 87 | 383, 432, 481, 544, 606, 683, 767, 854, |
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| 88 | 963, 1074, 1212, 1392, 1566, 1708, 1978, 2211 |
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| 89 | }; |
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| 90 | |||
| 91 | /** |
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| 92 | * tables used to translate a quantizer value into a VLC set for decoding |
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| 93 | * The first table is used for intraframes. |
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| 94 | */ |
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| 95 | static const uint8_t rv34_quant_to_vlc_set[2][31] = { |
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| 96 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, |
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| 97 | 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0 }, |
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| 98 | { 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, |
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| 99 | 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 }, |
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| 100 | }; |
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| 101 | |||
| 102 | /** |
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| 103 | * table for obtaining the quantizer difference |
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| 104 | * @todo Use with ff_modified_quant_tab from h263data.h. |
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| 105 | */ |
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| 106 | static const uint8_t rv34_dquant_tab[2][32]={ |
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| 107 | // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
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| 108 | { |
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| 109 | 0, 3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9,10,11,12,13,14,15,16,17,18,18,19,20,21,22,23,24,25,26,27,28 |
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| 110 | },{ |
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| 111 | 0, 2, 3, 4, 5, 6, 7, 8, 9,10,11,13,14,15,16,17,18,19,20,21,22,24,25,26,27,28,29,30,31,31,31,26 |
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| 112 | } |
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| 113 | }; |
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| 114 | |||
| 115 | /** |
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| 116 | * maximum number of macroblocks for each of the possible slice offset sizes |
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| 117 | * @todo This is the same as ff_mba_max, maybe use it instead. |
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| 118 | */ |
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| 119 | static const uint16_t rv34_mb_max_sizes[6] = { 0x2F, 0x62, 0x18B, 0x62F, 0x18BF, 0x23FF }; |
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| 120 | /** |
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| 121 | * bits needed to code the slice offset for the given size |
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| 122 | * @todo This is the same as ff_mba_length, maybe use it instead. |
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| 123 | */ |
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| 124 | static const uint8_t rv34_mb_bits_sizes[6] = { 6, 7, 9, 11, 13, 14 }; |
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| 125 | |||
| 126 | #endif /* AVCODEC_RV34DATA_H */ |