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 RV30/40 tables 25 */ 26 27#ifndef AVCODEC_RV34DATA_H 28#define AVCODEC_RV34DATA_H 29 30#include <stdint.h> 31 32/** 33 * number of ones in nibble minus one 34 */ 35static const uint8_t rv34_count_ones[16] = { 36 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 2, 1, 2, 2, 3 37}; 38 39/** 40 * values used to reconstruct coded block pattern 41 */ 42static const uint8_t rv34_cbp_code[16] = { 43 0x00, 0x20, 0x10, 0x30, 0x02, 0x22, 0x12, 0x32, 44 0x01, 0x21, 0x11, 0x31, 0x03, 0x23, 0x13, 0x33 45}; 46 47/** 48 * precalculated results of division by three and modulo three for values 0-107 49 * 50 * A lot of four-tuples in RV40 are represented as c0*27+c1*9+c2*3+c3. 51 * This table allows conversion from a value back to a vector. 52 */ 53static const uint8_t modulo_three_table[108][4] = { 54 { 0, 0, 0, 0 }, { 0, 0, 0, 1 }, { 0, 0, 0, 2 }, { 0, 0, 1, 0 }, 55 { 0, 0, 1, 1 }, { 0, 0, 1, 2 }, { 0, 0, 2, 0 }, { 0, 0, 2, 1 }, 56 { 0, 0, 2, 2 }, { 0, 1, 0, 0 }, { 0, 1, 0, 1 }, { 0, 1, 0, 2 }, 57 { 0, 1, 1, 0 }, { 0, 1, 1, 1 }, { 0, 1, 1, 2 }, { 0, 1, 2, 0 }, 58 { 0, 1, 2, 1 }, { 0, 1, 2, 2 }, { 0, 2, 0, 0 }, { 0, 2, 0, 1 }, 59 { 0, 2, 0, 2 }, { 0, 2, 1, 0 }, { 0, 2, 1, 1 }, { 0, 2, 1, 2 }, 60 { 0, 2, 2, 0 }, { 0, 2, 2, 1 }, { 0, 2, 2, 2 }, { 1, 0, 0, 0 }, 61 { 1, 0, 0, 1 }, { 1, 0, 0, 2 }, { 1, 0, 1, 0 }, { 1, 0, 1, 1 }, 62 { 1, 0, 1, 2 }, { 1, 0, 2, 0 }, { 1, 0, 2, 1 }, { 1, 0, 2, 2 }, 63 { 1, 1, 0, 0 }, { 1, 1, 0, 1 }, { 1, 1, 0, 2 }, { 1, 1, 1, 0 }, 64 { 1, 1, 1, 1 }, { 1, 1, 1, 2 }, { 1, 1, 2, 0 }, { 1, 1, 2, 1 }, 65 { 1, 1, 2, 2 }, { 1, 2, 0, 0 }, { 1, 2, 0, 1 }, { 1, 2, 0, 2 }, 66 { 1, 2, 1, 0 }, { 1, 2, 1, 1 }, { 1, 2, 1, 2 }, { 1, 2, 2, 0 }, 67 { 1, 2, 2, 1 }, { 1, 2, 2, 2 }, { 2, 0, 0, 0 }, { 2, 0, 0, 1 }, 68 { 2, 0, 0, 2 }, { 2, 0, 1, 0 }, { 2, 0, 1, 1 }, { 2, 0, 1, 2 }, 69 { 2, 0, 2, 0 }, { 2, 0, 2, 1 }, { 2, 0, 2, 2 }, { 2, 1, 0, 0 }, 70 { 2, 1, 0, 1 }, { 2, 1, 0, 2 }, { 2, 1, 1, 0 }, { 2, 1, 1, 1 }, 71 { 2, 1, 1, 2 }, { 2, 1, 2, 0 }, { 2, 1, 2, 1 }, { 2, 1, 2, 2 }, 72 { 2, 2, 0, 0 }, { 2, 2, 0, 1 }, { 2, 2, 0, 2 }, { 2, 2, 1, 0 }, 73 { 2, 2, 1, 1 }, { 2, 2, 1, 2 }, { 2, 2, 2, 0 }, { 2, 2, 2, 1 }, 74 { 2, 2, 2, 2 }, { 3, 0, 0, 0 }, { 3, 0, 0, 1 }, { 3, 0, 0, 2 }, 75 { 3, 0, 1, 0 }, { 3, 0, 1, 1 }, { 3, 0, 1, 2 }, { 3, 0, 2, 0 }, 76 { 3, 0, 2, 1 }, { 3, 0, 2, 2 }, { 3, 1, 0, 0 }, { 3, 1, 0, 1 }, 77 { 3, 1, 0, 2 }, { 3, 1, 1, 0 }, { 3, 1, 1, 1 }, { 3, 1, 1, 2 }, 78 { 3, 1, 2, 0 }, { 3, 1, 2, 1 }, { 3, 1, 2, 2 }, { 3, 2, 0, 0 }, 79 { 3, 2, 0, 1 }, { 3, 2, 0, 2 }, { 3, 2, 1, 0 }, { 3, 2, 1, 1 }, 80 { 3, 2, 1, 2 }, { 3, 2, 2, 0 }, { 3, 2, 2, 1 }, { 3, 2, 2, 2 }, 81}; 82 83/** 84 * quantizer values used for AC and DC coefficients in chroma blocks 85 */ 86static const uint8_t rv34_chroma_quant[2][32] = { 87 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 88 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 25 }, 89 { 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 90 14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23 } 91}; 92 93/** 94 * This table is used for dequantizing. 95 */ 96static const uint16_t rv34_qscale_tab[32] = { 97 60, 67, 76, 85, 96, 108, 121, 136, 98 152, 171, 192, 216, 242, 272, 305, 341, 99 383, 432, 481, 544, 606, 683, 767, 854, 100 963, 1074, 1212, 1392, 1566, 1708, 1978, 2211 101}; 102 103/** 104 * 4x4 dezigzag pattern 105 */ 106static const uint8_t rv34_dezigzag[16] = { 107 0, 1, 8, 16, 108 9, 2, 3, 10, 109 17, 24, 25, 18, 110 11, 19, 26, 27 111}; 112 113/** 114 * tables used to translate a quantizer value into a VLC set for decoding 115 * The first table is used for intraframes. 116 */ 117static const uint8_t rv34_quant_to_vlc_set[2][31] = { 118 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 119 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0 }, 120 { 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 121 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 }, 122}; 123 124/** 125 * table for obtaining the quantizer difference 126 * @todo Use with modified_quant_tab from h263data.h. 127 */ 128static const uint8_t rv34_dquant_tab[2][32]={ 129// 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 31 130{ 131 0, 3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9,10,11,12,13,14,15,16,17,18,18,19,20,21,22,23,24,25,26,27,28 132},{ 133 0, 2, 3, 4, 5, 6, 7, 8, 9,10,11,13,14,15,16,17,18,19,20,21,22,24,25,26,27,28,29,30,31,31,31,26 134} 135}; 136 137/** 138 * maximum number of macroblocks for each of the possible slice offset sizes 139 * @todo This is the same as ff_mba_max, maybe use it instead. 140 */ 141static const uint16_t rv34_mb_max_sizes[6] = { 0x2F, 0x62, 0x18B, 0x62F, 0x18BF, 0x23FF }; 142/** 143 * bits needed to code the slice offset for the given size 144 * @todo This is the same as ff_mba_length, maybe use it instead. 145 */ 146static const uint8_t rv34_mb_bits_sizes[6] = { 6, 7, 9, 11, 13, 14 }; 147 148#endif /* AVCODEC_RV34DATA_H */ 149