/* * Copyright (c) 2015 Kieran Kunhya * * 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 */ #include <stdint.h> #include "libavutil/attributes.h" #include "cfhd.h" /* some special codewords, not sure what they all mean */ #define TABLE_9_BAND_END1 0x1C7859Eh #define TABLE_9_BAND_END_LEN1 25 #define TABLE_9_BAND_END2 0x38F0B3Fh #define TABLE_9_BAND_END_LEN2 26 #define TABLE_9_BAND_END3 0x38F0B3Eh #define TABLE_9_BAND_END_LEN3 26 #define NB_VLC_TABLE_9 (71 + 3) #define NB_VLC_TABLE_18 (263 + 1) static const uint32_t table_9_vlc_bits[NB_VLC_TABLE_9] = { 0, 0x2, 0xc, 0x1a, 0x1d, 0x1e, 0x39, 0x3e, 0x37, 0x7e, 0x6c, 0xe2, 0xfe, 0xdb, 0xe0, 0x1c3, 0x1c6, 0x1ff, 0x1fe, 0x1b5, 0x369, 0x385, 0x71d, 0x6d0, 0x708, 0x71f, 0xe3d, 0xe39, 0xe13, 0xe12, 0x1c71, 0x1b45, 0x1b47, 0x3689, 0x38f2, 0x38e1, 0x38e0, 0x38f1, 0x3688, 0x6d1b, 0x71e0, 0x6d19, 0x71e7, 0xe3cd, 0xda35, 0xda30, 0xe3c3, 0x1b469, 0x1b462, 0x1c798, 0x1b463, 0x1c799, 0x38f08, 0x38f09, 0x38f0a, 0x6d1a0, 0x6d1a3, 0x6d1a1, 0xda345, 0xda344, 0xe3c2d, 0xe3c2f, 0xe3c2e, 0x38f0b2, 0x71e160, 0x71e162, 0x71e166, 0x71e161, 0xe3c2ce, 0xe3c2c6, 0xe3c2c7, 0x1C7859E, 0x38F0B3F, 0x38F0B3E, }; static const uint8_t table_9_vlc_len[NB_VLC_TABLE_9] = { 1, 2, 4, 5, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 20, 20, 20, 22, 23, 23, 23, 23, 24, 24, 24, 25, 26, 26, }; static const uint16_t table_9_vlc_run[NB_VLC_TABLE_9] = { 1, 1, 1, 1, 12, 1, 32, 160, 1, 1, 1, 320, 1, 1, 80, 120, 1, 1, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; static const uint8_t table_9_vlc_level[NB_VLC_TABLE_9] = { 0, 1, 2, 3, 0, 4, 0, 0, 5, 7, 6, 0, 9, 8, 0, 0, 11, 12, 0, 10, 13, 14, 17, 15, 16, 18, 22, 21, 20, 19, 25, 23, 24, 27, 31, 29, 28, 30, 26, 33, 34, 32, 35, 39, 37, 36, 38, 42, 40, 43, 41, 44, 45, 46, 47, 48, 50, 49, 52, 51, 53, 55, 54, 56, 57, 59, 60, 58, 61, 62, 63, 64, 64, 64, }; static const uint32_t table_18_vlc_bits[NB_VLC_TABLE_18] = { 0, 0x2, 0x7, 0x19, 0x30, 0x36, 0x6f, 0x63, 0x69, 0x6b, 0xd1, 0xd4, 0xdc, 0x189, 0x18a, 0x1a0, 0x1ab, 0x377, 0x310, 0x316, 0x343, 0x354, 0x375, 0x623, 0x684, 0x685, 0x6ab, 0x6ec, 0xddb, 0xc5c, 0xc5e, 0xc44, 0xd55, 0xdd1, 0xdd3, 0x1bb5, 0x188b, 0x18bb, 0x18bf, 0x1aa8, 0x1ba0, 0x1ba5, 0x1ba4, 0x3115, 0x3175, 0x317d, 0x3553, 0x3768, 0x6e87, 0x6ed3, 0x62e8, 0x62f8, 0x6228, 0x6aa4, 0x6e85, 0xc453, 0xc5d3, 0xc5f3, 0xdda4, 0xdd08, 0xdd0c, 0x1bb4b, 0x1bb4a, 0x18ba5, 0x18be5, 0x1aa95, 0x1aa97, 0x188a4, 0x1ba13, 0x31748, 0x317c8, 0x35528, 0x3552c, 0x37424, 0x37434, 0x37436, 0x62294, 0x62e92, 0x62f92, 0x6aa52, 0x6aa5a, 0x6e86a, 0x6e86e, 0x6e84a, 0xc452a, 0xc5d27, 0xc5f26, 0xd54a6, 0xd54b6, 0xdd096, 0xdd0d6, 0xdd0de, 0x188a56, 0x18ba4d, 0x18be4e, 0x18be4f, 0x1aa96e, 0x1ba12e, 0x1ba12f, 0x1ba1af, 0x1ba1bf, 0x37435d, 0x37437d, 0x317498, 0x35529c, 0x35529d, 0x3552de, 0x3552df, 0x62e933, 0x62295d, 0x6aa53d, 0x6aa53f, 0x6aa53e, 0x6e86b9, 0x6e86f8, 0xd54a79, 0xc5d265, 0xc452b8, 0xdd0d71, 0xd54a78, 0xdd0d70, 0xdd0df2, 0xdd0df3, 0x188a5f6, 0x188a5f5, 0x188a5f4, 0x188a5f3, 0x188a5f2, 0x188a5f1, 0x188a5f0, 0x188a5ef, 0x188a5ee, 0x188a5ed, 0x188a5aa, 0x188a5e3, 0x188a5df, 0x188a589, 0x188a5dd, 0x188a578, 0x188a5e0, 0x188a588, 0x188a5d6, 0x188a5db, 0x188a5e1, 0x188a587, 0x188a59a, 0x188a5c4, 0x188a5ec, 0x188a586, 0x188a573, 0x188a59c, 0x188a5c8, 0x188a5fb, 0x188a5a1, 0x188a5eb, 0x188a5a8, 0x188a584, 0x188a5d2, 0x188a599, 0x188a598, 0x188a583, 0x18ba4c9, 0x188a5d0, 0x188a594, 0x188a582, 0x188a5cb, 0x188a5d8, 0x188a5e7, 0x188a581, 0x188a5ea, 0x188a5a9, 0x188a5a6, 0x188a580, 0x188a5a0, 0x188a59d, 0x188a5c3, 0x188a57f, 0x188a5c0, 0x188a5de, 0x188a5d4, 0x188a57e, 0x188a5c2, 0x188a592, 0x188a5cd, 0x188a57d, 0x188a5a3, 0x188a5e8, 0x188a5a2, 0x188a57c, 0x188a58e, 0x188a5b3, 0x188a5b2, 0x188a5b1, 0x188a5b0, 0x188a5af, 0x188a5ae, 0x188a5ad, 0x188a5ac, 0x188a5ab, 0x188a5da, 0x188a5e4, 0x188a5e5, 0x188a5d9, 0x188a5b5, 0x188a5bc, 0x188a5bd, 0x188a5e9, 0x188a5cc, 0x188a585, 0x188a5d3, 0x188a5e2, 0x188a595, 0x188a596, 0x188a5b8, 0x188a590, 0x188a5c9, 0x188a5a4, 0x188a5e6, 0x188a5a5, 0x188a5ce, 0x188a5bf, 0x188a572, 0x188a59b, 0x188a5be, 0x188a5c7, 0x188a5ca, 0x188a5d5, 0x188a57b, 0x188a58d, 0x188a58c, 0x188a58b, 0x188a58a, 0x18ba4c8, 0x188a5c5, 0x188a5fa, 0x188a5bb, 0x188a5c1, 0x188a5cf, 0x188a5b9, 0x188a5b6, 0x188a597, 0x188a5fe, 0x188a5d7, 0x188a5ba, 0x188a591, 0x188a5c6, 0x188a5dc, 0x188a57a, 0x188a59f, 0x188a5f9, 0x188a5b4, 0x188a5a7, 0x188a58f, 0x188a5fd, 0x188a5b7, 0x188a593, 0x188a59e, 0x188a5f8, 0x188a5ff, 0x188a5fc, 0x188a579, 0x188a5f7, 0x3114ba2, 0x3114ba3, }; static const uint8_t table_18_vlc_len[NB_VLC_TABLE_18] = { 1, 2, 3, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, }; static const uint16_t table_18_vlc_run[NB_VLC_TABLE_18] = { 1, 1, 1, 1, 1, 1, 1, 1, 12, 1, 20, 1, 1, 1, 32, 1, 1, 1, 1, 1, 60, 1, 1, 1, 1, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 180, 1, 1, 320, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, }; static const uint8_t table_18_vlc_level[NB_VLC_TABLE_18] = { 0, 1, 2, 3, 4, 5, 8, 6, 0, 7, 0, 9, 10, 11, 0, 12, 13, 18, 14, 15, 0, 16, 17, 19, 20, 0, 21, 22, 29, 24, 25, 23, 26, 27, 28, 35, 30, 31, 0, 32, 33, 0, 34, 36, 37, 38, 39, 40, 46, 47, 42, 43, 41, 44, 45, 48, 49, 50, 53, 51, 52, 61, 60, 55, 56, 57, 58, 54, 59, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 75, 76, 74, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 99, 100, 94, 95, 96, 97, 98, 102, 101, 103, 105, 104, 106, 107, 111, 109, 108, 113, 110, 112, 114, 115, 225, 189, 188, 203, 202, 197, 207, 169, 223, 159, 235, 152, 192, 179, 201, 172, 149, 178, 120, 219, 150, 127, 211, 125, 158, 247, 238, 163, 228, 183, 217, 168, 122, 128, 249, 187, 186, 136, 181, 255, 230, 135, 233, 222, 145, 134, 167, 248, 209, 243, 216, 164, 140, 157, 239, 191, 251, 156, 139, 242, 133, 162, 213, 165, 212, 227, 198, 236, 234, 117, 215, 124, 123, 254, 253, 148, 218, 146, 147, 224, 143, 184, 185, 166, 132, 129, 250, 151, 119, 193, 176, 245, 229, 206, 144, 208, 137, 241, 237, 190, 240, 131, 232, 252, 171, 205, 204, 118, 214, 180, 126, 182, 175, 141, 138, 177, 153, 194, 160, 121, 174, 246, 130, 200, 170, 221, 196, 142, 210, 199, 155, 154, 244, 220, 195, 161, 231, 173, 226, 116, 255, }; av_cold int ff_cfhd_init_vlcs(CFHDContext *s) { int i, j, ret = 0; uint32_t new_cfhd_vlc_bits[NB_VLC_TABLE_18 * 2]; uint8_t new_cfhd_vlc_len[NB_VLC_TABLE_18 * 2]; uint16_t new_cfhd_vlc_run[NB_VLC_TABLE_18 * 2]; int16_t new_cfhd_vlc_level[NB_VLC_TABLE_18 * 2]; /** Similar to dv.c, generate signed VLC tables **/ /* Table 9 */ for (i = 0, j = 0; i < NB_VLC_TABLE_9; i++, j++) { new_cfhd_vlc_bits[j] = table_9_vlc_bits[i]; new_cfhd_vlc_len[j] = table_9_vlc_len[i]; new_cfhd_vlc_run[j] = table_9_vlc_run[i]; new_cfhd_vlc_level[j] = table_9_vlc_level[i]; /* Don't include the zero level nor escape bits */ if (table_9_vlc_level[i] && new_cfhd_vlc_bits[j] != table_9_vlc_bits[NB_VLC_TABLE_9-1]) { new_cfhd_vlc_bits[j] <<= 1; new_cfhd_vlc_len[j]++; j++; new_cfhd_vlc_bits[j] = (table_9_vlc_bits[i] << 1) | 1; new_cfhd_vlc_len[j] = table_9_vlc_len[i] + 1; new_cfhd_vlc_run[j] = table_9_vlc_run[i]; new_cfhd_vlc_level[j] = -table_9_vlc_level[i]; } } ret = init_vlc(&s->vlc_9, VLC_BITS, j, new_cfhd_vlc_len, 1, 1, new_cfhd_vlc_bits, 4, 4, 0); if (ret < 0) return ret; for (i = 0; i < s->vlc_9.table_size; i++) { int code = s->vlc_9.table[i][0]; int len = s->vlc_9.table[i][1]; int level, run; if (len < 0) { // more bits needed run = 0; level = code; } else { run = new_cfhd_vlc_run[code]; level = new_cfhd_vlc_level[code]; } s->table_9_rl_vlc[i].len = len; s->table_9_rl_vlc[i].level = level; s->table_9_rl_vlc[i].run = run; } /* Table 18 */ for (i = 0, j = 0; i < NB_VLC_TABLE_18; i++, j++) { new_cfhd_vlc_bits[j] = table_18_vlc_bits[i]; new_cfhd_vlc_len[j] = table_18_vlc_len[i]; new_cfhd_vlc_run[j] = table_18_vlc_run[i]; new_cfhd_vlc_level[j] = table_18_vlc_level[i]; /* Don't include the zero level nor escape bits */ if (table_18_vlc_level[i] && new_cfhd_vlc_bits[j] != table_18_vlc_bits[NB_VLC_TABLE_18-1]) { new_cfhd_vlc_bits[j] <<= 1; new_cfhd_vlc_len[j]++; j++; new_cfhd_vlc_bits[j] = (table_18_vlc_bits[i] << 1) | 1; new_cfhd_vlc_len[j] = table_18_vlc_len[i] + 1; new_cfhd_vlc_run[j] = table_18_vlc_run[i]; new_cfhd_vlc_level[j] = -table_18_vlc_level[i]; } } ret = init_vlc(&s->vlc_18, VLC_BITS, j, new_cfhd_vlc_len, 1, 1, new_cfhd_vlc_bits, 4, 4, 0); if (ret < 0) return ret; av_assert0(s->vlc_18.table_size == 4572); for (i = 0; i < s->vlc_18.table_size; i++) { int code = s->vlc_18.table[i][0]; int len = s->vlc_18.table[i][1]; int level, run; if (len < 0) { // more bits needed run = 0; level = code; } else { run = new_cfhd_vlc_run[code]; level = new_cfhd_vlc_level[code]; } s->table_18_rl_vlc[i].len = len; s->table_18_rl_vlc[i].level = level; s->table_18_rl_vlc[i].run = run; } return ret; }