libSBRdec/src/sbr_rom.h

   1
   2 /* -----------------------------------------------------------------------------------------------------------
   3 Software License for The Fraunhofer FDK AAC Codec Library for Android
   4
   5 © Copyright  1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
   6   All rights reserved.
   7
   8  1.    INTRODUCTION
   9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
  10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
  11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
  12
  13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
  14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
  15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
  16 of the MPEG specifications.
  17
  18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
  19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
  20 individually for the purpose of encoding or decoding bit streams in products that are compliant with
  21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
  22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
  23 software may already be covered under those patent licenses when it is used for those licensed purposes only.
  24
  25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
  26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
  27 applications information and documentation.
  28
  29 2.    COPYRIGHT LICENSE
  30
  31 Redistribution and use in source and binary forms, with or without modification, are permitted without
  32 payment of copyright license fees provided that you satisfy the following conditions:
  33
  34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
  35 your modifications thereto in source code form.
  36
  37 You must retain the complete text of this software license in the documentation and/or other materials
  38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
  39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
  40 modifications thereto to recipients of copies in binary form.
  41
  42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without
  43 prior written permission.
  44
  45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
  46 software or your modifications thereto.
  47
  48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
  49 and the date of any change. For modified versions of the FDK AAC Codec, the term
  50 "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
  51 "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
  52
  53 3.    NO PATENT LICENSE
  54
  55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
  56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
  57 respect to this software.
  58
  59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
  60 by appropriate patent licenses.
  61
  62 4.    DISCLAIMER
  63
  64 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
  65 "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
  66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
  67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
  68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
  69 or business interruption, however caused and on any theory of liability, whether in contract, strict
  70 liability, or tort (including negligence), arising in any way out of the use of this software, even if
  71 advised of the possibility of such damage.
  72
  73 5.    CONTACT INFORMATION
  74
  75 Fraunhofer Institute for Integrated Circuits IIS
  76 Attention: Audio and Multimedia Departments - FDK AAC LL
  77 Am Wolfsmantel 33
  78 91058 Erlangen, Germany
  79
  80 www.iis.fraunhofer.de/amm
  81 amm-info@iis.fraunhofer.de
  82 ----------------------------------------------------------------------------------------------------------- */
  83
  84 /*!
  85 \file
  86 \brief Declaration of constant tables
  87
  88 */
  89 #ifndef __rom_H
  90 #define __rom_H
  91
  92 #include "sbrdecoder.h"
  93 #include "env_extr.h"
  94 #include "qmf.h"
  95
  96 #define INV_INT_TABLE_SIZE      49
  97 #define SBR_NF_NO_RANDOM_VAL  512   /*!< Size of random number array for noise floor */
  98
  99 /*
 100   Frequency scales
 101 */
 102 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_16[16];
 103 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_22[16];
 104 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_24[16];
 105 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_32[16];
 106 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_40[16];
 107 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_44[16];
 108 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_48[16];
 109 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_64[16];
 110 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_88[16];
 111
 112 /*
 113   Low-Power-Profile Transposer
 114 */
 115 #define NUM_WHFACTOR_TABLE_ENTRIES  9
 116 extern const USHORT FDK_sbrDecoder_sbr_whFactorsIndex[NUM_WHFACTOR_TABLE_ENTRIES];
 117 extern const FIXP_DBL FDK_sbrDecoder_sbr_whFactorsTable[NUM_WHFACTOR_TABLE_ENTRIES][6];
 118
 119
 120
 121 /*
 122   Envelope Adjustor
 123 */
 124 extern const FIXP_SGL FDK_sbrDecoder_sbr_limGains_m[4];
 125 extern const UCHAR    FDK_sbrDecoder_sbr_limGains_e[4];
 126 extern const FIXP_SGL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4[4];
 127 extern const FIXP_SGL FDK_sbrDecoder_sbr_smoothFilter[4];
 128 extern const FIXP_SGL FDK_sbrDecoder_sbr_randomPhase[SBR_NF_NO_RANDOM_VAL][2];
 129 extern const FIXP_SGL harmonicPhaseX [2][4];
 130
 131 /*
 132   Envelope Extractor
 133 */
 134 extern const int FDK_sbrDecoder_envelopeTable_8  [8][5];
 135 extern const int FDK_sbrDecoder_envelopeTable_15 [15][6];
 136 extern const int FDK_sbrDecoder_envelopeTable_16 [16][6];
 137
 138 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_15;
 139 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_15;
 140 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_15;
 141 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_15;
 142
 143 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_16;
 144 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_16;
 145 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_16;
 146 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_16;
 147
 148 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10T[120][2];
 149 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10F[120][2];
 150 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10T[48][2];
 151 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10F[48][2];
 152 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11T[62][2];
 153 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11F[62][2];
 154 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11T[24][2];
 155 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11F[24][2];
 156 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseLevel11T[62][2];
 157 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseBalance11T[24][2];
 158
 159
 160 /*
 161  Parametric stereo
 162 */
 163
 164
 165 extern const FIXP_DBL decayScaleFactTable[NO_QMF_CHANNELS];
 166
 167 /* FIX_BORDER can have 0, 1, 2, 4 envelops */
 168 extern const UCHAR FDK_sbrDecoder_aFixNoEnvDecode[4];
 169
 170 /* IID & ICC Huffman codebooks */
 171 extern const SCHAR aBookPsIidTimeDecode[28][2];
 172 extern const SCHAR aBookPsIidFreqDecode[28][2];
 173 extern const SCHAR aBookPsIccTimeDecode[14][2];
 174 extern const SCHAR aBookPsIccFreqDecode[14][2];
 175
 176 /* IID-fine Huffman codebooks */
 177
 178 extern const SCHAR aBookPsIidFineTimeDecode[60][2];
 179 extern const SCHAR aBookPsIidFineFreqDecode[60][2];
 180
 181 /* the values of the following 3 tables are shiftet right by 1 ! */
 182 extern const FIXP_DBL ScaleFactors[NO_IID_LEVELS];
 183 extern const FIXP_DBL ScaleFactorsFine[NO_IID_LEVELS_FINE];
 184 extern const FIXP_DBL Alphas[NO_ICC_LEVELS];
 185
 186 #if defined(ARCH_PREFER_MULT_32x16)
 187 extern const FIXP_SGL aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS];
 188 extern const FIXP_SGL aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS];
 189 extern const FIXP_SGL aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS];
 190 extern const FIXP_SGL aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS];
 191 extern const FIXP_SGL aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS];
 192
 193 extern const FIXP_SGL aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 194 extern const FIXP_SGL aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 195 extern const FIXP_SGL aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 196 extern const FIXP_SGL aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 197
 198 extern const FIXP_SGL p8_13_20[13];
 199 extern const FIXP_SGL p2_13_20[13];
 200
 201 #else
 202 extern const FIXP_DBL aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS];
 203 extern const FIXP_DBL aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS];
 204 extern const FIXP_DBL aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS];
 205 extern const FIXP_DBL aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS];
 206 extern const FIXP_DBL aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS];
 207
 208 extern const FIXP_DBL aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 209 extern const FIXP_DBL aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 210 extern const FIXP_DBL aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 211 extern const FIXP_DBL aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
 212
 213 extern const FIXP_DBL p8_13_20[13];
 214 extern const FIXP_DBL p2_13_20[13];
 215 #endif
 216
 217 extern const UCHAR aAllpassLinkDelaySer[3];
 218 extern const UCHAR delayIndexQmf[NO_QMF_CHANNELS];
 219 extern const UCHAR groupBorders20[NO_IID_GROUPS + 1];
 220 extern const UCHAR groupBorders34[NO_IID_GROUPS_HI_RES + 1];
 221 extern const UCHAR bins2groupMap20[NO_IID_GROUPS];
 222 extern const UCHAR quantizedIIDs[NO_IID_STEPS];
 223 extern const UCHAR quantizedIIDsFine[NO_IID_STEPS_FINE];
 224 extern const UCHAR FDK_sbrDecoder_aNoIidBins[3];
 225 extern const UCHAR FDK_sbrDecoder_aNoIccBins[3];
 226
 227
 228 /* Lookup tables for some arithmetic functions */
 229
 230 #define INV_TABLE_BITS 8
 231 #define INV_TABLE_SIZE (1<<INV_TABLE_BITS)
 232 extern const FIXP_SGL FDK_sbrDecoder_invTable[INV_TABLE_SIZE];
 233
 234 #endif // __rom_H