/* * Constants for DV codec * Copyright (c) 2002 Fabrice Bellard * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * Constants for DV codec. */ #include <stdint.h> #include "dvdata.h" /* Specific zigzag scan for 248 idct. NOTE that unlike the * specification, we interleave the fields */ const uint8_t ff_dv_zigzag248_direct[64] = { 0, 8, 1, 9, 16, 24, 2, 10, 17, 25, 32, 40, 48, 56, 33, 41, 18, 26, 3, 11, 4, 12, 19, 27, 34, 42, 49, 57, 50, 58, 35, 43, 20, 28, 5, 13, 6, 14, 21, 29, 36, 44, 51, 59, 52, 60, 37, 45, 22, 30, 7, 15, 23, 31, 38, 46, 53, 61, 54, 62, 39, 47, 55, 63, }; /* unquant tables (not used directly) */ const uint8_t ff_dv_quant_shifts[22][4] = { { 3, 3, 4, 4 }, { 3, 3, 4, 4 }, { 2, 3, 3, 4 }, { 2, 3, 3, 4 }, { 2, 2, 3, 3 }, { 2, 2, 3, 3 }, { 1, 2, 2, 3 }, { 1, 2, 2, 3 }, { 1, 1, 2, 2 }, { 1, 1, 2, 2 }, { 0, 1, 1, 2 }, { 0, 1, 1, 2 }, { 0, 0, 1, 1 }, { 0, 0, 1, 1 }, { 0, 0, 0, 1 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, }; const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 }; /* * There's a catch about the following three tables: the mapping they establish * between (run, level) and vlc is not 1-1. So you have to watch out for that * when building misc. tables. E.g. (1, 0) can be either 0x7cf or 0x1f82. */ const uint16_t ff_dv_vlc_bits[NB_DV_VLC] = { 0x0000, 0x0002, 0x0007, 0x0008, 0x0009, 0x0014, 0x0015, 0x0016, 0x0017, 0x0030, 0x0031, 0x0032, 0x0033, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x01e0, 0x01e1, 0x01e2, 0x01e3, 0x01e4, 0x01e5, 0x01e6, 0x01e7, 0x01e8, 0x01e9, 0x01ea, 0x01eb, 0x01ec, 0x01ed, 0x01ee, 0x01ef, 0x03e0, 0x03e1, 0x03e2, 0x03e3, 0x03e4, 0x03e5, 0x03e6, 0x07ce, 0x07cf, 0x07d0, 0x07d1, 0x07d2, 0x07d3, 0x07d4, 0x07d5, 0x0fac, 0x0fad, 0x0fae, 0x0faf, 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7, 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf, 0x1f80, 0x1f81, 0x1f82, 0x1f83, 0x1f84, 0x1f85, 0x1f86, 0x1f87, 0x1f88, 0x1f89, 0x1f8a, 0x1f8b, 0x1f8c, 0x1f8d, 0x1f8e, 0x1f8f, 0x1f90, 0x1f91, 0x1f92, 0x1f93, 0x1f94, 0x1f95, 0x1f96, 0x1f97, 0x1f98, 0x1f99, 0x1f9a, 0x1f9b, 0x1f9c, 0x1f9d, 0x1f9e, 0x1f9f, 0x1fa0, 0x1fa1, 0x1fa2, 0x1fa3, 0x1fa4, 0x1fa5, 0x1fa6, 0x1fa7, 0x1fa8, 0x1fa9, 0x1faa, 0x1fab, 0x1fac, 0x1fad, 0x1fae, 0x1faf, 0x1fb0, 0x1fb1, 0x1fb2, 0x1fb3, 0x1fb4, 0x1fb5, 0x1fb6, 0x1fb7, 0x1fb8, 0x1fb9, 0x1fba, 0x1fbb, 0x1fbc, 0x1fbd, 0x1fbe, 0x1fbf, 0x7f00, 0x7f01, 0x7f02, 0x7f03, 0x7f04, 0x7f05, 0x7f06, 0x7f07, 0x7f08, 0x7f09, 0x7f0a, 0x7f0b, 0x7f0c, 0x7f0d, 0x7f0e, 0x7f0f, 0x7f10, 0x7f11, 0x7f12, 0x7f13, 0x7f14, 0x7f15, 0x7f16, 0x7f17, 0x7f18, 0x7f19, 0x7f1a, 0x7f1b, 0x7f1c, 0x7f1d, 0x7f1e, 0x7f1f, 0x7f20, 0x7f21, 0x7f22, 0x7f23, 0x7f24, 0x7f25, 0x7f26, 0x7f27, 0x7f28, 0x7f29, 0x7f2a, 0x7f2b, 0x7f2c, 0x7f2d, 0x7f2e, 0x7f2f, 0x7f30, 0x7f31, 0x7f32, 0x7f33, 0x7f34, 0x7f35, 0x7f36, 0x7f37, 0x7f38, 0x7f39, 0x7f3a, 0x7f3b, 0x7f3c, 0x7f3d, 0x7f3e, 0x7f3f, 0x7f40, 0x7f41, 0x7f42, 0x7f43, 0x7f44, 0x7f45, 0x7f46, 0x7f47, 0x7f48, 0x7f49, 0x7f4a, 0x7f4b, 0x7f4c, 0x7f4d, 0x7f4e, 0x7f4f, 0x7f50, 0x7f51, 0x7f52, 0x7f53, 0x7f54, 0x7f55, 0x7f56, 0x7f57, 0x7f58, 0x7f59, 0x7f5a, 0x7f5b, 0x7f5c, 0x7f5d, 0x7f5e, 0x7f5f, 0x7f60, 0x7f61, 0x7f62, 0x7f63, 0x7f64, 0x7f65, 0x7f66, 0x7f67, 0x7f68, 0x7f69, 0x7f6a, 0x7f6b, 0x7f6c, 0x7f6d, 0x7f6e, 0x7f6f, 0x7f70, 0x7f71, 0x7f72, 0x7f73, 0x7f74, 0x7f75, 0x7f76, 0x7f77, 0x7f78, 0x7f79, 0x7f7a, 0x7f7b, 0x7f7c, 0x7f7d, 0x7f7e, 0x7f7f, 0x7f80, 0x7f81, 0x7f82, 0x7f83, 0x7f84, 0x7f85, 0x7f86, 0x7f87, 0x7f88, 0x7f89, 0x7f8a, 0x7f8b, 0x7f8c, 0x7f8d, 0x7f8e, 0x7f8f, 0x7f90, 0x7f91, 0x7f92, 0x7f93, 0x7f94, 0x7f95, 0x7f96, 0x7f97, 0x7f98, 0x7f99, 0x7f9a, 0x7f9b, 0x7f9c, 0x7f9d, 0x7f9e, 0x7f9f, 0x7fa0, 0x7fa1, 0x7fa2, 0x7fa3, 0x7fa4, 0x7fa5, 0x7fa6, 0x7fa7, 0x7fa8, 0x7fa9, 0x7faa, 0x7fab, 0x7fac, 0x7fad, 0x7fae, 0x7faf, 0x7fb0, 0x7fb1, 0x7fb2, 0x7fb3, 0x7fb4, 0x7fb5, 0x7fb6, 0x7fb7, 0x7fb8, 0x7fb9, 0x7fba, 0x7fbb, 0x7fbc, 0x7fbd, 0x7fbe, 0x7fbf, 0x7fc0, 0x7fc1, 0x7fc2, 0x7fc3, 0x7fc4, 0x7fc5, 0x7fc6, 0x7fc7, 0x7fc8, 0x7fc9, 0x7fca, 0x7fcb, 0x7fcc, 0x7fcd, 0x7fce, 0x7fcf, 0x7fd0, 0x7fd1, 0x7fd2, 0x7fd3, 0x7fd4, 0x7fd5, 0x7fd6, 0x7fd7, 0x7fd8, 0x7fd9, 0x7fda, 0x7fdb, 0x7fdc, 0x7fdd, 0x7fde, 0x7fdf, 0x7fe0, 0x7fe1, 0x7fe2, 0x7fe3, 0x7fe4, 0x7fe5, 0x7fe6, 0x7fe7, 0x7fe8, 0x7fe9, 0x7fea, 0x7feb, 0x7fec, 0x7fed, 0x7fee, 0x7fef, 0x7ff0, 0x7ff1, 0x7ff2, 0x7ff3, 0x7ff4, 0x7ff5, 0x7ff6, 0x7ff7, 0x7ff8, 0x7ff9, 0x7ffa, 0x7ffb, 0x7ffc, 0x7ffd, 0x7ffe, 0x7fff, 0x0006, }; const uint8_t ff_dv_vlc_len[NB_DV_VLC] = { 2, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, }; const uint8_t ff_dv_vlc_run[NB_DV_VLC] = { 0, 0, 1, 0, 0, 2, 1, 0, 0, 3, 4, 0, 0, 5, 6, 2, 1, 1, 0, 0, 0, 7, 8, 9, 10, 3, 4, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 11, 12, 13, 14, 5, 6, 3, 4, 2, 2, 1, 0, 0, 0, 0, 0, 5, 3, 3, 2, 1, 1, 1, 0, 1, 6, 4, 3, 1, 1, 1, 2, 3, 4, 5, 7, 8, 9, 10, 7, 8, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 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, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 127, }; const uint8_t ff_dv_vlc_level[NB_DV_VLC] = { 1, 2, 1, 3, 4, 1, 2, 5, 6, 1, 1, 7, 8, 1, 1, 2, 3, 4, 9, 10, 11, 1, 1, 1, 1, 2, 2, 3, 5, 6, 7, 12, 13, 14, 15, 16, 17, 1, 1, 1, 1, 2, 2, 3, 3, 4, 5, 8, 18, 19, 20, 21, 22, 3, 4, 5, 6, 9, 10, 11, 0, 0, 3, 4, 6, 12, 13, 14, 0, 0, 0, 0, 2, 2, 2, 2, 3, 3, 5, 7, 7, 8, 9, 10, 11, 15, 16, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 0, };