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      1 
      2 /* -----------------------------------------------------------------------------------------------------------
      3 Software License for The Fraunhofer FDK AAC Codec Library for Android
      4 
      5  Copyright  1995 - 2012 Fraunhofer-Gesellschaft zur Frderung 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 (at) iis.fraunhofer.de
     82 ----------------------------------------------------------------------------------------------------------- */
     83 
     84 /*!
     85   \file
     86   \brief Memory layout
     87 
     88 
     89   This module declares all static and dynamic memory spaces
     90 */
     91 #include "sbr_ram.h"
     92 
     93 #include "sbr.h"
     94 #include "genericStds.h"
     95 
     96 C_ALLOC_MEM (Ram_SbrDynamic_RAM, FIXP_DBL, ((SBR_ENC_DYN_RAM_SIZE)/sizeof(FIXP_DBL)))
     97 
     98 /*!
     99   \name StaticSbrData
    100 
    101   Static memory areas, must not be overwritten in other sections of the encoder
    102 */
    103 /* @{ */
    104 
    105 /*! static sbr encoder instance for one encoder (2 channels)
    106   all major static and dynamic memory areas are located
    107   in module sbr_ram and sbr rom
    108 */
    109 C_ALLOC_MEM (Ram_SbrEncoder, SBR_ENCODER, 1)
    110 C_ALLOC_MEM2(Ram_SbrChannel, SBR_CHANNEL, 1, (6))
    111 C_ALLOC_MEM2(Ram_SbrElement, SBR_ELEMENT, 1, (6))
    112 
    113 /*! Filter states for QMF-analysis. <br>
    114   Dimension: #MAXNRSBRCHANNELS * #SBR_QMF_FILTER_LENGTH
    115 */
    116 C_AALLOC_MEM2_L (Ram_Sbr_QmfStatesAnalysis, FIXP_QAS, QMF_FILTER_LENGTH, (6), SECT_DATA_L1)
    117 
    118 
    119 /*! Matrix holding the quota values for all estimates, all channels
    120   Dimension #MAXNRSBRCHANNELS * +#SBR_QMF_CHANNELS* #MAX_NO_OF_ESTIMATES
    121 */
    122 C_ALLOC_MEM2_L (Ram_Sbr_quotaMatrix, FIXP_DBL, (MAX_NO_OF_ESTIMATES*QMF_CHANNELS), (6), SECT_DATA_L1)
    123 
    124 /*! Matrix holding the sign values for all estimates, all channels
    125   Dimension #MAXNRSBRCHANNELS * +#SBR_QMF_CHANNELS* #MAX_NO_OF_ESTIMATES
    126 */
    127 C_ALLOC_MEM2 (Ram_Sbr_signMatrix, INT, (MAX_NO_OF_ESTIMATES*QMF_CHANNELS), (6))
    128 
    129 /*! Frequency band table (low res) <br>
    130   Dimension #MAX_FREQ_COEFFS/2+1
    131 */
    132 C_ALLOC_MEM2 (Ram_Sbr_freqBandTableLO, UCHAR, (MAX_FREQ_COEFFS/2+1), (6))
    133 
    134 /*! Frequency band table (high res) <br>
    135   Dimension #MAX_FREQ_COEFFS +1
    136 */
    137 C_ALLOC_MEM2 (Ram_Sbr_freqBandTableHI, UCHAR, (MAX_FREQ_COEFFS+1), (6))
    138 
    139 /*! vk matser table <br>
    140   Dimension #MAX_FREQ_COEFFS +1
    141 */
    142 C_ALLOC_MEM2 (Ram_Sbr_v_k_master, UCHAR, (MAX_FREQ_COEFFS+1), (6))
    143 
    144 
    145 /*
    146   Missing harmonics detection
    147 */
    148 
    149 /*! sbr_detectionVectors <br>
    150   Dimension #MAX_NUM_CHANNELS*#MAX_NO_OF_ESTIMATES*#MAX_FREQ_COEFFS]
    151 */
    152 C_ALLOC_MEM2 (Ram_Sbr_detectionVectors, UCHAR, (MAX_NO_OF_ESTIMATES*MAX_FREQ_COEFFS), (6))
    153 
    154 /*! sbr_prevCompVec[ <br>
    155   Dimension #MAX_NUM_CHANNELS*#MAX_FREQ_COEFFS]
    156 */
    157 C_ALLOC_MEM2 (Ram_Sbr_prevEnvelopeCompensation, UCHAR, MAX_FREQ_COEFFS, (6))
    158 /*! sbr_guideScfb[ <br>
    159   Dimension #MAX_NUM_CHANNELS*#MAX_FREQ_COEFFS]
    160 */
    161 C_ALLOC_MEM2 (Ram_Sbr_guideScfb, UCHAR, MAX_FREQ_COEFFS, (6))
    162 
    163 /*! sbr_guideVectorDetected <br>
    164   Dimension #MAX_NUM_CHANNELS*#MAX_NO_OF_ESTIMATES*#MAX_FREQ_COEFFS]
    165 */
    166 C_ALLOC_MEM2 (Ram_Sbr_guideVectorDetected, UCHAR, (MAX_NO_OF_ESTIMATES*MAX_FREQ_COEFFS), (6))
    167 C_ALLOC_MEM2 (Ram_Sbr_guideVectorDiff, FIXP_DBL, (MAX_NO_OF_ESTIMATES*MAX_FREQ_COEFFS), (6))
    168 C_ALLOC_MEM2 (Ram_Sbr_guideVectorOrig, FIXP_DBL, (MAX_NO_OF_ESTIMATES*MAX_FREQ_COEFFS), (6))
    169 
    170 /*
    171   Static Parametric Stereo memory
    172 */
    173 C_AALLOC_MEM_L(Ram_PsQmfStatesSynthesis, FIXP_DBL, QMF_FILTER_LENGTH/2, SECT_DATA_L1)
    174 
    175 C_ALLOC_MEM_L (Ram_PsEncode,    PS_ENCODE, 1, SECT_DATA_L1)
    176 C_ALLOC_MEM   (Ram_ParamStereo, PARAMETRIC_STEREO, 1)
    177 
    178 
    179 
    180 /* @} */
    181 
    182 
    183 /*!
    184   \name DynamicSbrData
    185 
    186   Dynamic memory areas, might be reused in other algorithm sections,
    187   e.g. the core encoder.
    188 */
    189 /* @{ */
    190 
    191   /*! Energy buffer for envelope extraction <br>
    192     Dimension #MAXNRSBRCHANNELS * +#SBR_QMF_SLOTS *  #SBR_QMF_CHANNELS
    193   */
    194   C_ALLOC_MEM2 (Ram_Sbr_envYBuffer, FIXP_DBL, (QMF_MAX_TIME_SLOTS/2 * QMF_CHANNELS), (6))
    195 
    196   FIXP_DBL* GetRam_Sbr_envYBuffer (int n, UCHAR* dynamic_RAM) {
    197     FDK_ASSERT(dynamic_RAM!=0);
    198     return ((FIXP_DBL*) (dynamic_RAM + OFFSET_NRG + (n*Y_2_BUF_BYTE) ));
    199   }
    200 
    201   /*
    202    * QMF data
    203    */
    204   /* The SBR encoder uses a single channel overlapping buffer set (always n=0), but PS does not. */
    205   FIXP_DBL* GetRam_Sbr_envRBuffer (int n, UCHAR* dynamic_RAM) {
    206     FDK_ASSERT(dynamic_RAM!=0);
    207     return ((FIXP_DBL*) (dynamic_RAM + OFFSET_QMF + (n*(ENV_R_BUFF_BYTE+ENV_I_BUFF_BYTE)) ));
    208   }
    209   FIXP_DBL* GetRam_Sbr_envIBuffer (int n, UCHAR* dynamic_RAM) {
    210     FDK_ASSERT(dynamic_RAM!=0);
    211     return ((FIXP_DBL*) (dynamic_RAM + OFFSET_QMF + (ENV_R_BUFF_BYTE) + (n*(ENV_R_BUFF_BYTE+ENV_I_BUFF_BYTE))));
    212   }
    213 
    214 
    215 
    216 
    217 /* @} */
    218 
    219 
    220 
    221 
    222 
    223