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      1 
      2 /* -----------------------------------------------------------------------------------------------------------
      3 Software License for The Fraunhofer FDK AAC Codec Library for Android
      4 
      5  Copyright  1995 - 2013 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 /*****************************  MPEG-4 AAC Decoder  **************************
     85 
     86    Author(s):   Christian Griebel
     87    Description: Dynamic range control (DRC) global data types
     88 
     89 ******************************************************************************/
     90 
     91 #ifndef AACDEC_DRC_TYPES_H
     92 #define AACDEC_DRC_TYPES_H
     93 
     94 
     95 
     96 #include "common_fix.h"
     97 
     98  #define MAX_DRC_THREADS      (   3 )        /* Heavy compression value is handled just like MPEG DRC data */
     99 #define MAX_DRC_BANDS         (  16 )        /* 2^LEN_DRC_BAND_INCR (LEN_DRC_BAND_INCR = 4) */
    100 
    101 /**
    102  * \brief DRC module global data types
    103  */
    104 typedef enum
    105 {
    106   UNKNOWN_PAYLOAD   =  0,
    107   MPEG_DRC_EXT_DATA =  1,
    108   DVB_DRC_ANC_DATA  =  2
    109 
    110 } AACDEC_DRC_PAYLOAD_TYPE;
    111 
    112 typedef struct
    113 {
    114   UINT    expiryCount;
    115   UINT    numBands;
    116   USHORT  bandTop[MAX_DRC_BANDS];
    117   SHORT   drcInterpolationScheme;
    118   UCHAR   drcValue[MAX_DRC_BANDS];
    119   SCHAR   drcDataType;
    120 
    121 } CDrcChannelData;
    122 
    123 typedef struct
    124 {
    125   UINT   excludedChnsMask;
    126   SCHAR  progRefLevel;
    127   SCHAR  presMode;     /* Presentation mode: 0 (not indicated), 1, 2, and 3 (reserved). */
    128   SCHAR  pceInstanceTag;
    129 
    130   CDrcChannelData channelData;
    131 
    132 } CDrcPayload;
    133 
    134 typedef struct
    135 {
    136   FIXP_DBL  cut;       /* The attenuation scale factor currently used.     */
    137   FIXP_DBL  usrCut;    /* The latest attenuation scale factor set by user. */
    138   FIXP_DBL  boost;     /* The boost scale factor currently used.           */
    139   FIXP_DBL  usrBoost;  /* The latest boost scale factor set by user.       */
    140 
    141   UINT   expiryFrame;
    142   SCHAR  targetRefLevel;
    143   UCHAR  bsDelayEnable;
    144   UCHAR  applyDigitalNorm;
    145   UCHAR  applyHeavyCompression;
    146 
    147 } CDrcParams;
    148 
    149 
    150 typedef struct
    151 {
    152   CDrcParams params;                         /* Module parameters that can be set by user (via SetParam API function) */
    153 
    154   UCHAR  enable;                             /* Switch that controls dynamic range processing */
    155   UCHAR  digitalNorm;                        /* Switch to en-/disable reference level normalization in digital domain */
    156 
    157   USHORT numPayloads;                        /* The number of DRC data payload elements found within frame */
    158   USHORT numThreads;                         /* The number of DRC data threads extracted from the found payload elements */
    159   SCHAR  progRefLevel;                       /* Program reference level for all channels */
    160   UCHAR  progRefLevelPresent;                /* Program reference level found in bitstream */
    161 
    162   UINT   prlExpiryCount;                     /* Counter that can be used to monitor the life time of the program reference level. */
    163 
    164   SCHAR  presMode;                            /* Presentation mode as defined in ETSI TS 101 154 */
    165   UCHAR  dvbAncDataAvailable;                  /* Flag that indicates whether DVB ancillary data is present or not */
    166   UINT   dvbAncDataPosition;                   /* Used to store the DVB ancillary data payload position in the bitstream (only one per frame) */
    167   UINT   drcPayloadPosition[MAX_DRC_THREADS];  /* Used to store the DRC payload positions in the bitstream */
    168 
    169 } CDrcInfo;
    170 
    171 typedef CDrcInfo *HANDLE_AAC_DRC;
    172 
    173 #endif /* AACDEC_DRC_TYPES_H */
    174 
    175