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  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 };
  73.