| 1 | /* |
| 2 | * Apple ProRes compatible decoder |
| 3 | * |
| 4 | * Copyright (c) 2010-2011 Maxim Poliakovski |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include "proresdata.h" |
| 24 | |
| 25 | const uint8_t ff_prores_progressive_scan[64] = { |
| 26 | 0, 1, 8, 9, 2, 3, 10, 11, |
| 27 | 16, 17, 24, 25, 18, 19, 26, 27, |
| 28 | 4, 5, 12, 20, 13, 6, 7, 14, |
| 29 | 21, 28, 29, 22, 15, 23, 30, 31, |
| 30 | 32, 33, 40, 48, 41, 34, 35, 42, |
| 31 | 49, 56, 57, 50, 43, 36, 37, 44, |
| 32 | 51, 58, 59, 52, 45, 38, 39, 46, |
| 33 | 53, 60, 61, 54, 47, 55, 62, 63 |
| 34 | }; |
| 35 | |
| 36 | const uint8_t ff_prores_interlaced_scan[64] = { |
| 37 | 0, 8, 1, 9, 16, 24, 17, 25, |
| 38 | 2, 10, 3, 11, 18, 26, 19, 27, |
| 39 | 32, 40, 33, 34, 41, 48, 56, 49, |
| 40 | 42, 35, 43, 50, 57, 58, 51, 59, |
| 41 | 4, 12, 5, 6, 13, 20, 28, 21, |
| 42 | 14, 7, 15, 22, 29, 36, 44, 37, |
| 43 | 30, 23, 31, 38, 45, 52, 60, 53, |
| 44 | 46, 39, 47, 54, 61, 62, 55, 63 |
| 45 | }; |
| 46 | |
| 47 | |
| 48 | const uint8_t ff_prores_dc_codebook[4] = { |
| 49 | 0x04, // rice_order = 0, exp_golomb_order = 1, switch_bits = 0 |
| 50 | 0x28, // rice_order = 1, exp_golomb_order = 2, switch_bits = 0 |
| 51 | 0x4D, // rice_order = 2, exp_golomb_order = 3, switch_bits = 1 |
| 52 | 0x70 // rice_order = 3, exp_golomb_order = 4, switch_bits = 0 |
| 53 | }; |
| 54 | |
| 55 | const uint8_t ff_prores_ac_codebook[7] = { |
| 56 | 0x04, // rice_order = 0, exp_golomb_order = 1, switch_bits = 0 |
| 57 | 0x28, // rice_order = 1, exp_golomb_order = 2, switch_bits = 0 |
| 58 | 0x4C, // rice_order = 2, exp_golomb_order = 3, switch_bits = 0 |
| 59 | 0x05, // rice_order = 0, exp_golomb_order = 1, switch_bits = 1 |
| 60 | 0x29, // rice_order = 1, exp_golomb_order = 2, switch_bits = 1 |
| 61 | 0x06, // rice_order = 0, exp_golomb_order = 1, switch_bits = 2 |
| 62 | 0x0A, // rice_order = 0, exp_golomb_order = 2, switch_bits = 2 |
| 63 | }; |
| 64 | |
| 65 | /** |
| 66 | * Lookup tables for adaptive switching between codebooks |
| 67 | * according with previous run/level value. |
| 68 | */ |
| 69 | const uint8_t ff_prores_run_to_cb_index[16] = |
| 70 | { 5, 5, 3, 3, 0, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 2 }; |
| 71 | |
| 72 | const uint8_t ff_prores_lev_to_cb_index[10] = { 0, 6, 3, 5, 0, 1, 1, 1, 1, 2 }; |