libAACenc/src/aacEnc_ram.cpp

   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
  86    Initial authors:      M. Lohwasser, M. Gayer
  87    Contents/description:
  88
  89 ******************************************************************************/
  90 /*!
  91   \file
  92   \brief  Memory layout
  93   \author Markus Lohwasser
  94 */
  95
  96 #include "aacEnc_ram.h"
  97
  98   C_AALLOC_MEM (AACdynamic_RAM, FIXP_DBL, AAC_ENC_DYN_RAM_SIZE/sizeof(FIXP_DBL))
  99
 100 /*
 101   Static memory areas, must not be overwritten in other sections of the decoder !
 102 */
 103
 104 /*
 105  The structure AacEncoder contains all Encoder structures.
 106 */
 107
 108 C_ALLOC_MEM (Ram_aacEnc_AacEncoder,           AAC_ENC,          1)
 109
 110
 111 /*
 112    The structure PSY_INTERNAl contains all psych configuration and data pointer.
 113    * PsyStatic holds last and current Psych data.
 114    * PsyInputBuffer contains time input. Signal is needed at the beginning of Psych.
 115      Memory can be reused after signal is in time domain.
 116    * PsyData contains spectral, nrg and threshold information. Necessary data are
 117      copied into PsyOut, so memory is available after leaving psych.
 118    * TnsData, ChaosMeasure, PnsData are temporarily necessary, e.g. use memory from
 119      PsyInputBuffer.
 120 */
 121
 122 C_ALLOC_MEM2 (Ram_aacEnc_PsyElement, PSY_ELEMENT, 1, (8))
 123
 124 C_ALLOC_MEM  (Ram_aacEnc_PsyInternal, PSY_INTERNAL, 1)
 125 C_ALLOC_MEM2 (Ram_aacEnc_PsyStatic,   PSY_STATIC,   1, (8))
 126
 127 C_ALLOC_MEM2 (Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (8))
 128
 129   PSY_DYNAMIC *GetRam_aacEnc_PsyDynamic (int n, UCHAR* dynamic_RAM) {
 130       FDK_ASSERT(dynamic_RAM!=0);
 131       return ((PSY_DYNAMIC*) (dynamic_RAM + P_BUF_1 + n*sizeof(PSY_DYNAMIC)));
 132   }
 133
 134   C_ALLOC_MEM (Ram_bsOutbuffer, UCHAR, OUTPUTBUFFER_SIZE)
 135
 136 /*
 137    The structure PSY_OUT holds all psychoaccoustic data needed
 138    in quantization module
 139 */
 140 C_ALLOC_MEM2 (Ram_aacEnc_PsyOut,         PSY_OUT, 1, (1))
 141
 142 C_ALLOC_MEM2 (Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT, 1, (1)*(8))
 143 C_ALLOC_MEM2 (Ram_aacEnc_PsyOutChannel,  PSY_OUT_CHANNEL, 1, (1)*(8))
 144
 145
 146 /*
 147    The structure QC_STATE contains preinitialized settings and quantizer structures.
 148    * AdjustThreshold structure contains element-wise settings.
 149    * ElementBits contains elemnt-wise bit consumption settings.
 150    * When CRC is active, lookup table is necessary for fast crc calculation.
 151    * Bitcounter contains buffer to find optimal codebooks and minimal bit consumption.
 152      Values are temporarily, so dynamic memory can be used.
 153 */
 154
 155 C_ALLOC_MEM (Ram_aacEnc_QCstate, QC_STATE, 1)
 156 C_ALLOC_MEM (Ram_aacEnc_AdjustThreshold, ADJ_THR_STATE, 1)
 157
 158 C_ALLOC_MEM2 (Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT, 1, (8))
 159 C_ALLOC_MEM2 (Ram_aacEnc_ElementBits, ELEMENT_BITS, 1, (8))
 160 C_ALLOC_MEM (Ram_aacEnc_BitCntrState, BITCNTR_STATE, 1)
 161
 162   INT *GetRam_aacEnc_BitLookUp(int n, UCHAR* dynamic_RAM) {
 163     FDK_ASSERT(dynamic_RAM!=0);
 164     return ((INT*) (dynamic_RAM + P_BUF_1));
 165   }
 166   INT *GetRam_aacEnc_MergeGainLookUp(int n, UCHAR* dynamic_RAM) {
 167     FDK_ASSERT(dynamic_RAM!=0);
 168     return ((INT*) (dynamic_RAM + P_BUF_1 + sizeof(INT)*(MAX_SFB_LONG*(CODE_BOOK_ESC_NDX+1))));
 169   }
 170
 171
 172 /*
 173    The structure QC_OUT contains settings and structures holding all necessary information
 174    needed in bitstreamwriter.
 175 */
 176
 177 C_ALLOC_MEM2 (Ram_aacEnc_QCout, QC_OUT, 1, (1))
 178 C_ALLOC_MEM2 (Ram_aacEnc_QCelement, QC_OUT_ELEMENT, (1), (8))
 179   QC_OUT_CHANNEL *GetRam_aacEnc_QCchannel (int n, UCHAR* dynamic_RAM) {
 180       FDK_ASSERT(dynamic_RAM!=0);
 181       return ((QC_OUT_CHANNEL*) (dynamic_RAM + P_BUF_0 + n*sizeof(QC_OUT_CHANNEL)));
 182   }
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194