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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 #ifndef _SBR_RAM_H_
     90 #define _SBR_RAM_H_
     91 
     92 #include "sbrdecoder.h"
     93 
     94 #include "env_extr.h"
     95 #include "sbr_dec.h"
     96 
     97 
     98 
     99 #define SBRDEC_MAX_CH_PER_ELEMENT  (2)
    100 
    101 typedef struct
    102 {
    103   SBR_CHANNEL          *pSbrChannel[SBRDEC_MAX_CH_PER_ELEMENT];
    104   TRANSPOSER_SETTINGS   transposerSettings; /* Common transport settings for each individual channel of an element */
    105   HANDLE_FDK_BITSTREAM  hBs;
    106 
    107   MP4_ELEMENT_ID        elementID;          /* Element ID set during initialization. Can be used for concealment */
    108   int                   nChannels;          /* Number of elements output channels (=2 in case of PS) */
    109 
    110   UCHAR frameErrorFlag[(1)+1];  /* Frame error status (for every slot in the delay line).
    111                                                        Will be copied into header at the very beginning of decodeElement() routine. */
    112 
    113   UCHAR useFrameSlot;          /* Index which defines which slot will be decoded/filled next (used with additional delay) */
    114   UCHAR useHeaderSlot[(1)+1];   /* Index array that provides the link between header and frame data
    115                                                        (important when processing with additional delay). */
    116 } SBR_DECODER_ELEMENT;
    117 
    118 
    119 struct SBR_DECODER_INSTANCE
    120 {
    121   SBR_DECODER_ELEMENT  *pSbrElement[(4)];
    122   SBR_HEADER_DATA       sbrHeader[(4)][(1)+1];      /* Sbr header for each individual channel of an element */
    123 
    124   FIXP_DBL *workBuffer1;
    125   FIXP_DBL *workBuffer2;
    126 
    127   HANDLE_PS_DEC  hParametricStereoDec;
    128 
    129   /* Global parameters */
    130   AUDIO_OBJECT_TYPE coreCodec; /* AOT of core codec */
    131   int numSbrElements;
    132   int numSbrChannels;
    133   INT sampleRateIn;            /* SBR decoder input sampling rate; might be different than the transposer input sampling rate. */
    134   INT sampleRateOut;           /* Sampling rate of the SBR decoder output audio samples. */
    135   USHORT codecFrameSize;
    136   UCHAR synDownsampleFac;
    137   UCHAR numDelayFrames;        /* The current number of additional delay frames used for processing. */
    138 
    139   UINT flags;
    140 
    141 };
    142 
    143 H_ALLOC_MEM(Ram_SbrDecElement, SBR_DECODER_ELEMENT)
    144 H_ALLOC_MEM(Ram_SbrDecChannel, SBR_CHANNEL)
    145 H_ALLOC_MEM(Ram_SbrDecoder, struct SBR_DECODER_INSTANCE)
    146 
    147 H_ALLOC_MEM(Ram_sbr_QmfStatesSynthesis, FIXP_QSS)
    148 H_ALLOC_MEM(Ram_sbr_OverlapBuffer, FIXP_DBL)
    149 
    150 
    151 H_ALLOC_MEM(Ram_ps_dec, PS_DEC)
    152 
    153 
    154 H_ALLOC_MEM_OVERLAY(Ram_SbrDecWorkBuffer1, FIXP_DBL)
    155 H_ALLOC_MEM_OVERLAY(Ram_SbrDecWorkBuffer2, FIXP_DBL)
    156 
    157 
    158 #endif /* _SBR_RAM_H_ */
    159