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