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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 /*****************************  MPEG Audio Encoder  ***************************
     85 
     86    Initial author:       M. Neuendorf, N. Rettelbach, M. Multrus
     87    contents/description: PS Parameter extraction, encoding
     88 
     89 ******************************************************************************/
     90 /*!
     91   \file
     92   \brief  PS parameter extraction, encoding functions
     93 */
     94 
     95 #ifndef __INCLUDED_PS_ENCODE_H
     96 #define __INCLUDED_PS_ENCODE_H
     97 
     98 #include "ps_const.h"
     99 #include "ps_bitenc.h"
    100 
    101 
    102 #define IID_SCALE_FT      (64.f)    /* maxVal in Quant tab is +/- 50 */
    103 #define IID_SCALE         6         /* maxVal in Quant tab is +/- 50 */
    104 #define IID_MAXVAL        (1<<IID_SCALE)
    105 
    106 #define PS_QUANT_SCALE_FT (64.f)     /* error smaller (64-25)/64 * 20 bands * 4 env -> QuantScale 64 */
    107 #define PS_QUANT_SCALE    6          /* error smaller (64-25)/64 * 20 bands * 4 env -> QuantScale 6 bit */
    108 
    109 
    110 #define QMF_GROUPS_LO_RES      12
    111 #define SUBQMF_GROUPS_LO_RES   10
    112 #define QMF_GROUPS_HI_RES      18
    113 #define SUBQMF_GROUPS_HI_RES   30
    114 
    115 
    116 typedef struct T_PS_DATA {
    117 
    118   INT iidEnable;
    119   INT iidEnableLast;
    120   INT iidQuantMode;
    121   INT iidQuantModeLast;
    122   INT iidDiffMode[PS_MAX_ENVELOPES];
    123   INT iidIdx     [PS_MAX_ENVELOPES][PS_MAX_BANDS];
    124   INT iidIdxLast [PS_MAX_BANDS];
    125 
    126   INT iccEnable;
    127   INT iccEnableLast;
    128   INT iccQuantMode;
    129   INT iccQuantModeLast;
    130   INT iccDiffMode[PS_MAX_ENVELOPES];
    131   INT iccIdx     [PS_MAX_ENVELOPES][PS_MAX_BANDS];
    132   INT iccIdxLast [PS_MAX_BANDS];
    133 
    134   INT nEnvelopesLast;
    135 
    136   INT headerCnt;
    137   INT iidTimeCnt;
    138   INT iccTimeCnt;
    139   INT noEnvCnt;
    140 
    141 } PS_DATA, *HANDLE_PS_DATA;
    142 
    143 
    144 typedef struct T_PS_ENCODE{
    145 
    146   PS_DATA         psData;
    147 
    148   PS_BANDS        psEncMode;
    149   INT             nQmfIidGroups;
    150   INT             nSubQmfIidGroups;
    151   INT             iidGroupBorders[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES + 1];
    152   INT             subband2parameterIndex[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES];
    153   UCHAR           iidGroupWidthLd[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES];
    154   FIXP_DBL        iidQuantErrorThreshold;
    155 
    156   UCHAR           psBandNrgScale [PS_MAX_BANDS];
    157 
    158 } PS_ENCODE;
    159 
    160 
    161 typedef struct T_PS_ENCODE *HANDLE_PS_ENCODE;
    162 
    163 FDK_PSENC_ERROR FDKsbrEnc_CreatePSEncode(
    164         HANDLE_PS_ENCODE         *phPsEncode
    165         );
    166 
    167 FDK_PSENC_ERROR FDKsbrEnc_InitPSEncode(
    168         HANDLE_PS_ENCODE          hPsEncode,
    169         const PS_BANDS            psEncMode,
    170         const FIXP_DBL            iidQuantErrorThreshold
    171         );
    172 
    173 FDK_PSENC_ERROR FDKsbrEnc_DestroyPSEncode(
    174         HANDLE_PS_ENCODE         *phPsEncode
    175         );
    176 
    177 FDK_PSENC_ERROR FDKsbrEnc_PSEncode(
    178         HANDLE_PS_ENCODE          hPsEncode,
    179         HANDLE_PS_OUT             hPsOut,
    180         UCHAR                    *dynBandScale,
    181         UINT                      maxEnvelopes,
    182         FIXP_DBL                 *hybridData[HYBRID_FRAMESIZE][MAX_PS_CHANNELS][2],
    183         const INT                 frameSize,
    184         const INT                 sendHeader
    185         );
    186 
    187 #endif
    188