blob: 3cade7df9beb5d6b3814650e8793f2a550425dc9
| 1 | /* ***** BEGIN LICENSE BLOCK ***** |
| 2 | * Source last modified: $Id: aactabs.c,v 1.1 2005/02/26 01:47:31 jrecker Exp $ |
| 3 | * |
| 4 | * Portions Copyright (c) 1995-2005 RealNetworks, Inc. All Rights Reserved. |
| 5 | * |
| 6 | * The contents of this file, and the files included with this file, |
| 7 | * are subject to the current version of the RealNetworks Public |
| 8 | * Source License (the "RPSL") available at |
| 9 | * http://www.helixcommunity.org/content/rpsl unless you have licensed |
| 10 | * the file under the current version of the RealNetworks Community |
| 11 | * Source License (the "RCSL") available at |
| 12 | * http://www.helixcommunity.org/content/rcsl, in which case the RCSL |
| 13 | * will apply. You may also obtain the license terms directly from |
| 14 | * RealNetworks. You may not use this file except in compliance with |
| 15 | * the RPSL or, if you have a valid RCSL with RealNetworks applicable |
| 16 | * to this file, the RCSL. Please see the applicable RPSL or RCSL for |
| 17 | * the rights, obligations and limitations governing use of the |
| 18 | * contents of the file. |
| 19 | * |
| 20 | * This file is part of the Helix DNA Technology. RealNetworks is the |
| 21 | * developer of the Original Code and owns the copyrights in the |
| 22 | * portions it created. |
| 23 | * |
| 24 | * This file, and the files included with this file, is distributed |
| 25 | * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY |
| 26 | * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS |
| 27 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES |
| 28 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET |
| 29 | * ENJOYMENT OR NON-INFRINGEMENT. |
| 30 | * |
| 31 | * Technology Compatibility Kit Test Suite(s) Location: |
| 32 | * http://www.helixcommunity.org/content/tck |
| 33 | * |
| 34 | * Contributor(s): |
| 35 | * |
| 36 | * ***** END LICENSE BLOCK ***** */ |
| 37 | |
| 38 | /************************************************************************************** |
| 39 | * Fixed-point HE-AAC decoder |
| 40 | * Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com) |
| 41 | * February 2005 |
| 42 | * |
| 43 | * aactabs.c - platform-independent tables for AAC decoder (global, read-only) |
| 44 | **************************************************************************************/ |
| 45 | |
| 46 | #include "aaccommon.h" |
| 47 | |
| 48 | /* sample rates (table 4.5.1) */ |
| 49 | const int sampRateTab[NUM_SAMPLE_RATES] = { |
| 50 | 96000, 88200, 64000, 48000, 44100, 32000, |
| 51 | 24000, 22050, 16000, 12000, 11025, 8000 |
| 52 | }; |
| 53 | |
| 54 | /* max scalefactor band for prediction (main profile only) */ |
| 55 | const int predSFBMax[NUM_SAMPLE_RATES] = { |
| 56 | 33, 33, 38, 40, 40, 40, 41, 41, 37, 37, 37, 34 |
| 57 | }; |
| 58 | |
| 59 | /* channel mapping (table 1.6.3.4) (-1 = unknown, so need to determine mapping based on rules in 8.5.1) */ |
| 60 | const int channelMapTab[NUM_DEF_CHAN_MAPS] = { |
| 61 | -1, 1, 2, 3, 4, 5, 6, 8 |
| 62 | }; |
| 63 | |
| 64 | /* number of channels in each element (SCE, CPE, etc.) |
| 65 | * see AACElementID in aaccommon.h |
| 66 | */ |
| 67 | const int elementNumChans[NUM_ELEMENTS] = { |
| 68 | 1, 2, 0, 1, 0, 0, 0, 0 |
| 69 | }; |
| 70 | |
| 71 | /* total number of scale factor bands in one window */ |
| 72 | const unsigned char sfBandTotalShort[NUM_SAMPLE_RATES] = { |
| 73 | 12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15 |
| 74 | }; |
| 75 | |
| 76 | const unsigned char sfBandTotalLong[NUM_SAMPLE_RATES] = { |
| 77 | 41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40 |
| 78 | }; |
| 79 | |
| 80 | /* scale factor band tables */ |
| 81 | const int sfBandTabShortOffset[NUM_SAMPLE_RATES] = {0, 0, 0, 13, 13, 13, 28, 28, 44, 44, 44, 60}; |
| 82 | |
| 83 | const short sfBandTabShort[76] = { |
| 84 | /* short block 64, 88, 96 kHz [13] (tables 4.5.24, 4.5.26) */ |
| 85 | 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128, |
| 86 | |
| 87 | /* short block 32, 44, 48 kHz [15] (table 4.5.15) */ |
| 88 | 0, 4, 8, 12, 16, 20, 28, 36, 44, 56, 68, 80, 96, 112, 128, |
| 89 | |
| 90 | /* short block 22, 24 kHz [16] (table 4.5.22) */ |
| 91 | 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 64, 76, 92, 108, 128, |
| 92 | |
| 93 | /* short block 11, 12, 16 kHz [16] (table 4.5.20) */ |
| 94 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 60, 72, 88, 108, 128, |
| 95 | |
| 96 | /* short block 8 kHz [16] (table 4.5.18) */ |
| 97 | 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 60, 72, 88, 108, 128 |
| 98 | }; |
| 99 | |
| 100 | const int sfBandTabLongOffset[NUM_SAMPLE_RATES] = {0, 0, 42, 90, 90, 140, 192, 192, 240, 240, 240, 284}; |
| 101 | |
| 102 | const short sfBandTabLong[325] = { |
| 103 | /* long block 88, 96 kHz [42] (table 4.5.25) */ |
| 104 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, |
| 105 | 56, 64, 72, 80, 88, 96, 108, 120, 132, 144, 156, 172, 188, 212, |
| 106 | 240, 276, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896, 960, 1024, |
| 107 | |
| 108 | /* long block 64 kHz [48] (table 4.5.13) */ |
| 109 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 64, |
| 110 | 72, 80, 88, 100, 112, 124, 140, 156, 172, 192, 216, 240, 268, 304, 344, 384, |
| 111 | 424, 464, 504, 544, 584, 624, 664, 704, 744, 784, 824, 864, 904, 944, 984, 1024, |
| 112 | |
| 113 | /* long block 44, 48 kHz [50] (table 4.5.14) */ |
| 114 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 56, 64, 72, 80, 88, |
| 115 | 96, 108, 120, 132, 144, 160, 176, 196, 216, 240, 264, 292, 320, 352, 384, 416, 448, |
| 116 | 480, 512, 544, 576, 608, 640, 672, 704, 736, 768, 800, 832, 864, 896, 928, 1024, |
| 117 | |
| 118 | /* long block 32 kHz [52] (table 4.5.16) */ |
| 119 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 56, 64, 72, 80, 88, 96, |
| 120 | 108, 120, 132, 144, 160, 176, 196, 216, 240, 264, 292, 320, 352, 384, 416, 448, 480, 512, |
| 121 | 544, 576, 608, 640, 672, 704, 736, 768, 800, 832, 864, 896, 928, 960, 992, 1024, |
| 122 | |
| 123 | /* long block 22, 24 kHz [48] (table 4.5.21) */ |
| 124 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 52, 60, 68, 76, |
| 125 | 84, 92, 100, 108, 116, 124, 136, 148, 160, 172, 188, 204, 220, 240, 260, 284, |
| 126 | 308, 336, 364, 396, 432, 468, 508, 552, 600, 652, 704, 768, 832, 896, 960, 1024, |
| 127 | |
| 128 | /* long block 11, 12, 16 kHz [44] (table 4.5.19) */ |
| 129 | 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 100, 112, 124, |
| 130 | 136, 148, 160, 172, 184, 196, 212, 228, 244, 260, 280, 300, 320, 344, 368, |
| 131 | 396, 424, 456, 492, 532, 572, 616, 664, 716, 772, 832, 896, 960, 1024, |
| 132 | |
| 133 | /* long block 8 kHz [41] (table 4.5.17) */ |
| 134 | 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, |
| 135 | 172, 188, 204, 220, 236, 252, 268, 288, 308, 328, 348, 372, 396, 420, |
| 136 | 448, 476, 508, 544, 580, 620, 664, 712, 764, 820, 880, 944, 1024 |
| 137 | }; |
| 138 | |
| 139 | |
| 140 | /* TNS max bands (table 4.139) and max order (table 4.138) */ |
| 141 | const int tnsMaxBandsShortOffset[AAC_NUM_PROFILES] = {0, 0, 12}; |
| 142 | |
| 143 | const unsigned char tnsMaxBandsShort[2 * NUM_SAMPLE_RATES] = { |
| 144 | 9, 9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14, /* short block, Main/LC */ |
| 145 | 7, 7, 7, 6, 6, 6, 7, 7, 8, 8, 8, 7 /* short block, SSR */ |
| 146 | }; |
| 147 | |
| 148 | const unsigned char tnsMaxOrderShort[AAC_NUM_PROFILES] = {7, 7, 7}; |
| 149 | |
| 150 | const int tnsMaxBandsLongOffset[AAC_NUM_PROFILES] = {0, 0, 12}; |
| 151 | |
| 152 | const unsigned char tnsMaxBandsLong[2 * NUM_SAMPLE_RATES] = { |
| 153 | 31, 31, 34, 40, 42, 51, 46, 46, 42, 42, 42, 39, /* long block, Main/LC */ |
| 154 | 28, 28, 27, 26, 26, 26, 29, 29, 23, 23, 23, 19, /* long block, SSR */ |
| 155 | }; |
| 156 | |
| 157 | const unsigned char tnsMaxOrderLong[AAC_NUM_PROFILES] = {20, 12, 12}; |
| 158 |