/* -----------------------------------------------------------------------------

Software License for The Fraunhofer FDK AAC Codec Library for Android

© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten

Forschung e.V. All rights reserved.

 1.    INTRODUCTION

The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software

that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding

scheme for digital audio. This FDK AAC Codec software is intended to be used on

a wide variety of Android devices.

AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient

general perceptual audio codecs. AAC-ELD is considered the best-performing

full-bandwidth communications codec by independent studies and is widely

deployed. AAC has been standardized by ISO and IEC as part of the MPEG

specifications.

Patent licenses for necessary patent claims for the FDK AAC Codec (including

those of Fraunhofer) may be obtained through Via Licensing

(www.vialicensing.com) or through the respective patent owners individually for

the purpose of encoding or decoding bit streams in products that are compliant

with the ISO/IEC MPEG audio standards. Please note that most manufacturers of

Android devices already license these patent claims through Via Licensing or

directly from the patent owners, and therefore FDK AAC Codec software may

already be covered under those patent licenses when it is used for those

licensed purposes only.

Commercially-licensed AAC software libraries, including floating-point versions

with enhanced sound quality, are also available from Fraunhofer. Users are

encouraged to check the Fraunhofer website for additional applications

information and documentation.

2.    COPYRIGHT LICENSE

Redistribution and use in source and binary forms, with or without modification,

are permitted without payment of copyright license fees provided that you

satisfy the following conditions:

You must retain the complete text of this software license in redistributions of

the FDK AAC Codec or your modifications thereto in source code form.

You must retain the complete text of this software license in the documentation

and/or other materials provided with redistributions of the FDK AAC Codec or

your modifications thereto in binary form. You must make available free of

charge copies of the complete source code of the FDK AAC Codec and your

modifications thereto to recipients of copies in binary form.

The name of Fraunhofer may not be used to endorse or promote products derived

from this library without prior written permission.

You may not charge copyright license fees for anyone to use, copy or distribute

the FDK AAC Codec software or your modifications thereto.

Your modified versions of the FDK AAC Codec must carry prominent notices stating

that you changed the software and the date of any change. For modified versions

of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"

must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK

AAC Codec Library for Android."

3.    NO PATENT LICENSE

NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without

limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.

Fraunhofer provides no warranty of patent non-infringement with respect to this

software.

You may use this FDK AAC Codec software or modifications thereto only for

purposes that are authorized by appropriate patent licenses.

4.    DISCLAIMER

This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright

holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,

including but not limited to the implied warranties of merchantability and

fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR

CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,

or consequential damages, including but not limited to procurement of substitute

goods or services; loss of use, data, or profits, or business interruption,

however caused and on any theory of liability, whether in contract, strict

liability, or tort (including negligence), arising in any way out of the use of

this software, even if advised of the possibility of such damage.

5.    CONTACT INFORMATION

Fraunhofer Institute for Integrated Circuits IIS

Attention: Audio and Multimedia Departments - FDK AAC LL

Am Wolfsmantel 33

91058 Erlangen, Germany

www.iis.fraunhofer.de/amm

amm-info@iis.fraunhofer.de

----------------------------------------------------------------------------- */

/************************** Arithmetic coder library ***************************

   Author(s):   Youliy Ninov, Oliver Weiss

   Description: Definition of Spectral Noiseless Coding Scheme based on an

                Arithmetic Coder in Conjunction with an Adaptive Context

*******************************************************************************/

#include "ac_arith_coder.h"

#define cbitsnew 16

#define stat_bitsnew 14

#define ari_q4new (((long)1 << cbitsnew) - 1) /* 0xFFFF */

#define ari_q1new (ari_q4new / 4 + 1)         /* 0x4000 */

#define ari_q2new (2 * ari_q1new)             /* 0x8000 */

#define ari_q3new (3 * ari_q1new)             /* 0xC000 */

#define VAL_ESC 16

/* Arithmetic coder library info */

#define AC_LIB_VL0 2

#define AC_LIB_VL1 0

#define AC_LIB_VL2 0

#define AC_LIB_TITLE "Arithmetic Coder Lib"

#ifdef __ANDROID__

#define AC_LIB_BUILD_DATE ""

#define AC_LIB_BUILD_TIME ""

#else

#define AC_LIB_BUILD_DATE __DATE__

#define AC_LIB_BUILD_TIME __TIME__

#endif

const SHORT ari_lsb2[3][4] = {

    {12571, 10569, 3696, 0}, {12661, 5700, 3751, 0}, {10827, 6884, 2929, 0}};

H_ALLOC_MEM(ArcoData, CArcoData)

/*! The structure ArcoData contains 2-tuple context of previous frame. <br>

    Dimension: 1 */

C_ALLOC_MEM(ArcoData, CArcoData, 1)

/*

   This define triggers the use of the pre-known return values of function

   get_pk_v2() for the cases, where parameter s is in range

   0x00000000..0x0000000F. Note: These 16 bytes have been moved into the first 4

   entries of ari_merged_hash_ps that are no more referenced.

*/

static const ULONG ari_merged_hash_ps[742] = {

    0x00001044UL, 0x00003D0AUL, 0x00005350UL, 0x000074D6UL, 0x0000A49FUL,

    0x0000F96EUL, 0x00111000UL, 0x01111E83UL, 0x01113146UL, 0x01114036UL,

    0x01116863UL, 0x011194E9UL, 0x0111F7EEUL, 0x0112269BUL, 0x01124775UL,

    0x01126DA1UL, 0x0112D912UL, 0x01131AF0UL, 0x011336DDUL, 0x01135CF5UL,

    0x01139DF8UL, 0x01141A5BUL, 0x01144773UL, 0x01146CF5UL, 0x0114FDE9UL,

    0x01166CF5UL, 0x0116FDE4UL, 0x01174CF3UL, 0x011FFDCFUL, 0x01211CC2UL,

    0x01213B2DUL, 0x01214036UL, 0x01216863UL, 0x012194D2UL, 0x0122197FUL,

    0x01223AADUL, 0x01224036UL, 0x01226878UL, 0x0122A929UL, 0x0122F4ABUL,

    0x01232B2DUL, 0x012347B6UL, 0x01237DF8UL, 0x0123B929UL, 0x012417DDUL,

    0x01245D76UL, 0x01249DF8UL, 0x0124F912UL, 0x01255D75UL, 0x0125FDE9UL,

    0x01265D75UL, 0x012B8DF7UL, 0x01311E2AUL, 0x01313B5EUL, 0x0131687BUL,

    0x01321A6DUL, 0x013237BCUL, 0x01326863UL, 0x0132F4EEUL, 0x01332B5EUL,

    0x01335DA1UL, 0x01338E24UL, 0x01341A5EUL, 0x01343DB6UL, 0x01348DF8UL,

    0x01351935UL, 0x01355DB7UL, 0x0135FE12UL, 0x01376DF7UL, 0x013FFE29UL,

    0x01400024UL, 0x01423821UL, 0x014318F6UL, 0x01433821UL, 0x0143F8E5UL,

    0x01443DA1UL, 0x01486E38UL, 0x014FF929UL, 0x01543EE3UL, 0x015FF912UL,

    0x016F298CUL, 0x018A5A69UL, 0x021007F1UL, 0x02112C2CUL, 0x02114B48UL,

    0x02117353UL, 0x0211F4AEUL, 0x02122FEAUL, 0x02124B48UL, 0x02127850UL,

    0x0212F72EUL, 0x02133A9EUL, 0x02134036UL, 0x02138864UL, 0x021414ADUL,

    0x0214379EUL, 0x02145DB6UL, 0x0214FE1FUL, 0x02166DB7UL, 0x02200DC4UL,

    0x02212FEAUL, 0x022147A0UL, 0x02218369UL, 0x0221F7EEUL, 0x02222AADUL,

    0x02224788UL, 0x02226863UL, 0x02229929UL, 0x0222F4ABUL, 0x02232A9EUL,

    0x02234F08UL, 0x02237864UL, 0x0223A929UL, 0x022417DEUL, 0x02244F36UL,

    0x02248863UL, 0x02251A74UL, 0x02256DA1UL, 0x0225FE12UL, 0x02263DB6UL,

    0x02276DF7UL, 0x022FFE29UL, 0x0231186DUL, 0x023137BCUL, 0x02314020UL,

    0x02319ED6UL, 0x0232196DUL, 0x023237BCUL, 0x02325809UL, 0x02329429UL,

    0x023317EDUL, 0x02333F08UL, 0x02335809UL, 0x023378E4UL, 0x02341A7CUL,

    0x02344221UL, 0x0234A8D3UL, 0x023514BCUL, 0x02354221UL, 0x0235F8DFUL,

    0x02364861UL, 0x023FFE29UL, 0x02400024UL, 0x0241583BUL, 0x024214C8UL,

    0x02424809UL, 0x02427EE6UL, 0x02431708UL, 0x02434809UL, 0x02436ED0UL,

    0x02441A76UL, 0x02443821UL, 0x024458E3UL, 0x0244F91FUL, 0x02454863UL,

    0x0246190AUL, 0x02464863UL, 0x024FF929UL, 0x02525ED0UL, 0x025314E1UL,

    0x025348FBUL, 0x025419A1UL, 0x025458D0UL, 0x0254F4E5UL, 0x02552861UL,

    0x025FF912UL, 0x02665993UL, 0x027F5A69UL, 0x029F1481UL, 0x02CF28A4UL,

    0x03100AF0UL, 0x031120AAUL, 0x031147A0UL, 0x03118356UL, 0x031217ECUL,

    0x03123B5EUL, 0x03124008UL, 0x03127350UL, 0x031314AAUL, 0x0313201EUL,

    0x03134F08UL, 0x03136863UL, 0x03141A5EUL, 0x03143F3CUL, 0x03200847UL,

    0x03212AADUL, 0x03214F20UL, 0x03218ED6UL, 0x032218ADUL, 0x032237BCUL,

    0x03225809UL, 0x03229416UL, 0x032317EDUL, 0x03234F20UL, 0x03237350UL,

    0x0323FA6BUL, 0x03243F08UL, 0x03246863UL, 0x0324F925UL, 0x03254221UL,

    0x0325F8DFUL, 0x03264821UL, 0x032FFE29UL, 0x03311E47UL, 0x03313F08UL,

    0x0331580DUL, 0x033214DEUL, 0x03323F08UL, 0x03324020UL, 0x03326350UL,

    0x033294E9UL, 0x033317DEUL, 0x03333F08UL, 0x0333627BUL, 0x0333A9A9UL,

    0x033417FCUL, 0x03343220UL, 0x0334627BUL, 0x0334A9A9UL, 0x0335148AUL,

    0x03353220UL, 0x033588E4UL, 0x03361A4AUL, 0x03363821UL, 0x0336F8D2UL,

    0x03376863UL, 0x03411939UL, 0x0341583BUL, 0x034214C8UL, 0x03424809UL,

    0x03426ED0UL, 0x03431588UL, 0x03434809UL, 0x03436ED0UL, 0x03441A48UL,

    0x0344480DUL, 0x03446ED0UL, 0x03451A4AUL, 0x03453809UL, 0x03455EFBUL,

    0x034614CAUL, 0x03463849UL, 0x034F8924UL, 0x03500A69UL, 0x035252D0UL,

    0x035314E0UL, 0x0353324DUL, 0x03535ED0UL, 0x035414E0UL, 0x0354324DUL,

    0x03545ED0UL, 0x0354F4E8UL, 0x0355384DUL, 0x03555ED0UL, 0x0355F4DFUL,

    0x03564350UL, 0x035969A6UL, 0x035FFA52UL, 0x036649A6UL, 0x036FFA52UL,

    0x037F4F66UL, 0x039D7492UL, 0x03BF6892UL, 0x03DF8A1FUL, 0x04100B84UL,

    0x04112107UL, 0x0411520DUL, 0x041214EAUL, 0x04124F20UL, 0x04131EDEUL,

    0x04133F08UL, 0x04135809UL, 0x0413F42BUL, 0x04142F08UL, 0x04200847UL,

    0x042121FCUL, 0x04214209UL, 0x04221407UL, 0x0422203CUL, 0x04224209UL,

    0x04226350UL, 0x04231A7CUL, 0x04234209UL, 0x0423637BUL, 0x04241A7CUL,

    0x04243220UL, 0x0424627BUL, 0x042514C8UL, 0x04254809UL, 0x042FF8E9UL,

    0x04311E47UL, 0x04313220UL, 0x0431527BUL, 0x043214FCUL, 0x04323220UL,

    0x04326250UL, 0x043315BCUL, 0x04333220UL, 0x0433527BUL, 0x04338413UL,

    0x04341488UL, 0x04344809UL, 0x04346ED0UL, 0x04351F48UL, 0x0435527BUL,

    0x0435F9A5UL, 0x04363809UL, 0x04375EFBUL, 0x043FF929UL, 0x04412E79UL,

    0x0441427BUL, 0x044219B9UL, 0x04423809UL, 0x0442537BUL, 0x044314C8UL,

    0x04432020UL, 0x0443527BUL, 0x044414CAUL, 0x04443809UL, 0x0444537BUL,

    0x04448993UL, 0x0445148AUL, 0x04453809UL, 0x04455ED0UL, 0x0445F4E5UL,

    0x0446384DUL, 0x045009A6UL, 0x045272D3UL, 0x045314A0UL, 0x0453324DUL,

    0x04535ED0UL, 0x045415A0UL, 0x0454324DUL, 0x04545ED0UL, 0x04551F60UL,

    0x0455324DUL, 0x04562989UL, 0x04564350UL, 0x045FF4D2UL, 0x04665993UL,

    0x047FFF62UL, 0x048FF725UL, 0x049F44BDUL, 0x04BFB7E5UL, 0x04EF8A25UL,

    0x04FFFB98UL, 0x051131F9UL, 0x051212C7UL, 0x05134209UL, 0x05200247UL,

    0x05211007UL, 0x05213E60UL, 0x052212C7UL, 0x05224209UL, 0x052319BCUL,

    0x05233220UL, 0x0523527BUL, 0x052414C8UL, 0x05243820UL, 0x053112F9UL,

    0x05313E49UL, 0x05321439UL, 0x05323E49UL, 0x0532537BUL, 0x053314C8UL,

    0x0533480DUL, 0x05337413UL, 0x05341488UL, 0x0534527BUL, 0x0534F4EBUL,

    0x05353809UL, 0x05356ED0UL, 0x0535F4E5UL, 0x0536427BUL, 0x054119B9UL,

    0x054212F9UL, 0x05423249UL, 0x05426ED3UL, 0x05431739UL, 0x05433249UL,

    0x05435ED0UL, 0x0543F4EBUL, 0x05443809UL, 0x05445ED0UL, 0x0544F4E8UL,

    0x0545324DUL, 0x054FF992UL, 0x055362D3UL, 0x0553F5ABUL, 0x05544350UL,

    0x055514CAUL, 0x0555427BUL, 0x0555F4E5UL, 0x0556327BUL, 0x055FF4D2UL,

    0x05665993UL, 0x05774F53UL, 0x059FF728UL, 0x05CC37FDUL, 0x05EFBA28UL,

    0x05FFFB98UL, 0x061131F9UL, 0x06121407UL, 0x06133E60UL, 0x061A72E4UL,

    0x06211E47UL, 0x06214E4BUL, 0x062214C7UL, 0x06223E60UL, 0x062312F9UL,

    0x06233E60UL, 0x063112F9UL, 0x06313E4CUL, 0x063219B9UL, 0x06323E49UL,

    0x06331439UL, 0x06333809UL, 0x06336EE6UL, 0x0633F5ABUL, 0x06343809UL,

    0x0634F42BUL, 0x0635427BUL, 0x063FF992UL, 0x064342FBUL, 0x0643F4EBUL,

    0x0644427BUL, 0x064524C9UL, 0x06655993UL, 0x0666170AUL, 0x066652E6UL,

    0x067A6F56UL, 0x0698473DUL, 0x06CF67D2UL, 0x06EF3A26UL, 0x06FFFAD8UL,

    0x071131CCUL, 0x07211307UL, 0x07222E79UL, 0x072292DCUL, 0x07234E4BUL,

    0x073112F9UL, 0x07322339UL, 0x073632CBUL, 0x073FF992UL, 0x074432CBUL,

    0x075549A6UL, 0x0776FF68UL, 0x07774350UL, 0x0788473DUL, 0x07CF4516UL,

    0x07EF3A26UL, 0x07FFFAD8UL, 0x08222E79UL, 0x083112F9UL, 0x0834330BUL,

    0x0845338BUL, 0x08756F5CUL, 0x0887F725UL, 0x08884366UL, 0x08AF649CUL,

    0x08F00898UL, 0x08FFFAD8UL, 0x091111C7UL, 0x0932330BUL, 0x0945338BUL,

    0x09774F7DUL, 0x0998C725UL, 0x09996416UL, 0x09EF87E5UL, 0x09FFFAD8UL,

    0x0A34330BUL, 0x0A45338BUL, 0x0A77467DUL, 0x0AA9F52BUL, 0x0AAA6416UL,

    0x0ABD67DFUL, 0x0AFFFA18UL, 0x0B33330BUL, 0x0B4443A6UL, 0x0B76467DUL,

    0x0BB9751FUL, 0x0BBB59BDUL, 0x0BEF5892UL, 0x0BFFFAD8UL, 0x0C221339UL,

    0x0C53338EUL, 0x0C76367DUL, 0x0CCAF52EUL, 0x0CCC6996UL, 0x0CFFFA18UL,

    0x0D44438EUL, 0x0D64264EUL, 0x0DDCF52EUL, 0x0DDD5996UL, 0x0DFFFA18UL,

    0x0E43338EUL, 0x0E68465CUL, 0x0EEE651CUL, 0x0EFFFA18UL, 0x0F33238EUL,

    0x0F553659UL, 0x0F8F451CUL, 0x0FAFF8AEUL, 0x0FF00A2EUL, 0x0FFF1ACCUL,

    0x0FFF33BDUL, 0x0FFF7522UL, 0x0FFFFAD8UL, 0x10002C72UL, 0x1111103EUL,

    0x11121E83UL, 0x11131E9AUL, 0x1121115AUL, 0x11221170UL, 0x112316F0UL,

    0x1124175DUL, 0x11311CC2UL, 0x11321182UL, 0x11331D42UL, 0x11411D48UL,

    0x11421836UL, 0x11431876UL, 0x11441DF5UL, 0x1152287BUL, 0x12111903UL,

    0x1212115AUL, 0x121316F0UL, 0x12211B30UL, 0x12221B30UL, 0x12231B02UL,

    0x12311184UL, 0x12321D04UL, 0x12331784UL, 0x12411D39UL, 0x12412020UL,

    0x12422220UL, 0x12511D89UL, 0x1252227BUL, 0x1258184AUL, 0x12832992UL,

    0x1311171AUL, 0x13121B30UL, 0x1312202CUL, 0x131320AAUL, 0x132120AAUL,

    0x132220ADUL, 0x13232FEDUL, 0x13312107UL, 0x13322134UL, 0x13332134UL,

    0x13411D39UL, 0x13431E74UL, 0x13441834UL, 0x134812B4UL, 0x1352230BUL,

    0x13611E4BUL, 0x136522E4UL, 0x141113C2UL, 0x141211C4UL, 0x143121F9UL,

    0x143221F9UL, 0x143321CAUL, 0x14351D34UL, 0x14431E47UL, 0x14441E74UL,

    0x144612B4UL, 0x1452230EUL, 0x14551E74UL, 0x1471130EUL, 0x151113C2UL,

    0x152121F9UL, 0x153121F9UL, 0x153221F9UL, 0x15331007UL, 0x15522E4EUL,

    0x15551E74UL, 0x1571130EUL, 0x161113C7UL, 0x162121F9UL, 0x163121F9UL,

    0x16611E79UL, 0x16661334UL, 0x171113C7UL, 0x172121F9UL, 0x17451E47UL,

    0x1771130CUL, 0x181113C7UL, 0x18211E47UL, 0x18511E4CUL, 0x1882130CUL,

    0x191113C7UL, 0x19331E79UL, 0x1A111307UL, 0x1A311E79UL, 0x1F52230EUL,

    0x200003C1UL, 0x20001027UL, 0x20004467UL, 0x200079E7UL, 0x2000E5EFUL,

    0x21100BC0UL, 0x211129C0UL, 0x21114011UL, 0x211189E7UL, 0x2111F5EFUL,

    0x21124011UL, 0x21127455UL, 0x211325C0UL, 0x21134011UL, 0x21137455UL,

    0x211425C0UL, 0x21212440UL, 0x21213001UL, 0x2121F9EFUL, 0x21222540UL,

    0x21226455UL, 0x2122F5EFUL, 0x21233051UL, 0x2123F56FUL, 0x21244451UL,

    0x21312551UL, 0x21323451UL, 0x21332551UL, 0x21844555UL, 0x221125C0UL,

    0x22113011UL, 0x2211F9EFUL, 0x22123051UL, 0x2212F9EFUL, 0x221329D1UL,

    0x22212541UL, 0x22213011UL, 0x2221F9EFUL, 0x22223451UL, 0x2222F9EFUL,

    0x22232551UL, 0x2223F56FUL, 0x22312551UL, 0x223229D1UL, 0x2232F56FUL,

    0x22332551UL, 0x2233F56FUL, 0x22875555UL, 0x22DAB5D7UL, 0x23112BD1UL,

    0x23115467UL, 0x231225D1UL, 0x232129D1UL, 0x232229D1UL, 0x2322F9EFUL,

    0x23233451UL, 0x2323F9EFUL, 0x23312551UL, 0x233229D1UL, 0x2332F9EFUL,

    0x2333F56FUL, 0x237FF557UL, 0x238569D5UL, 0x23D955D7UL, 0x24100BE7UL,

    0x248789E7UL, 0x24E315D7UL, 0x24FFFBEFUL, 0x259869E7UL, 0x25DFF5EFUL,

    0x25FFFBEFUL, 0x268789E7UL, 0x26DFA5D7UL, 0x26FFFBEFUL, 0x279649E7UL,

    0x27E425D7UL, 0x27FFFBEFUL, 0x288879E7UL, 0x28EFF5EFUL, 0x28FFFBEFUL,

    0x298439E7UL, 0x29F115EFUL, 0x29FFFBEFUL, 0x2A7659E7UL, 0x2AEF75D7UL,

    0x2AFFFBEFUL, 0x2B7C89E7UL, 0x2BEF95D7UL, 0x2BFFFBEFUL, 0x2C6659E7UL,

    0x2CD555D7UL, 0x2CFFFBEFUL, 0x2D6329E7UL, 0x2DDD55E7UL, 0x2DFFFBEBUL,

    0x2E8479D7UL, 0x2EEE35E7UL, 0x2EFFFBEFUL, 0x2F5459E7UL, 0x2FCF85D7UL,

    0x2FFEFBEBUL, 0x2FFFA5EFUL, 0x2FFFEBEFUL, 0x30001AE7UL, 0x30002001UL,

    0x311129C0UL, 0x31221015UL, 0x31232000UL, 0x31332451UL, 0x32112540UL,

    0x32131027UL, 0x32212440UL, 0x33452455UL, 0x4000F9D7UL, 0x4122F9D7UL,

    0x43F65555UL, 0x43FFF5D7UL, 0x44F55567UL, 0x44FFF5D7UL, 0x45F00557UL,

    0x45FFF5D7UL, 0x46F659D7UL, 0x471005E7UL, 0x47F449E7UL, 0x481005E7UL,

    0x48EFA9D5UL, 0x48FFF5EFUL, 0x49F449E7UL, 0x49FFF5EFUL, 0x4AEA79E7UL,

    0x4AFFF5EFUL, 0x4BE9C9D5UL, 0x4BFFF5EFUL, 0x4CE549E7UL, 0x4CFFF5EFUL,

    0x4DE359E7UL, 0x4DFFF5D7UL, 0x4EE469E7UL, 0x4EFFF5D7UL, 0x4FEF39E7UL,

    0x4FFFF5EFUL, 0x6000F9E7UL, 0x69FFF557UL, 0x6FFFF9D7UL, 0x811009D7UL,

    0x8EFFF555UL, 0xFFFFF9E7UL};

static const SHORT ari_pk[64][17] = {

    {708, 706, 579, 569, 568, 567, 479, 469, 297, 138, 97, 91, 72, 52, 38, 34,

     0},

    {7619, 6917, 6519, 6412, 5514, 5003, 4683, 4563, 3907, 3297, 3125, 3060,

     2904, 2718, 2631, 2590, 0},

    {7263, 4888, 4810, 4803, 1889, 415, 335, 327, 195, 72, 52, 49, 36, 20, 15,

     14, 0},

    {3626, 2197, 2188, 2187, 582, 57, 47, 46, 30, 12, 9, 8, 6, 4, 3, 2, 0},

    {7806, 5541, 5451, 5441, 2720, 834, 691, 674, 487, 243, 179, 167, 139, 98,

     77, 70, 0},

    {6684, 4101, 4058, 4055, 1748, 426, 368, 364, 322, 257, 235, 232, 228, 222,

     217, 215, 0},

    {9162, 5964, 5831, 5819, 3269, 866, 658, 638, 535, 348, 258, 244, 234, 214,

     195, 186, 0},

    {10638, 8491, 8365, 8351, 4418, 2067, 1859, 1834, 1190, 601, 495, 478, 356,

     217, 174, 164, 0},

    {13389, 10514, 10032, 9961, 7166, 3488, 2655, 2524, 2015, 1140, 760, 672,

     585, 426, 325, 283, 0},

    {14861, 12788, 12115, 11952, 9987, 6657, 5323, 4984, 4324, 3001, 2205, 1943,

     1764, 1394, 1115, 978, 0},

    {12876, 10004, 9661, 9610, 7107, 3435, 2711, 2595, 2257, 1508, 1059, 952,

     893, 753, 609, 538, 0},

    {15125, 13591, 13049, 12874, 11192, 8543, 7406, 7023, 6291, 4922, 4104,

     3769, 3465, 2890, 2486, 2275, 0},

    {14574, 13106, 12731, 12638, 10453, 7947, 7233, 7037, 6031, 4618, 4081,

     3906, 3465, 2802, 2476, 2349, 0},

    {15070, 13179, 12517, 12351, 10742, 7657, 6200, 5825, 5264, 3998, 3014,

     2662, 2510, 2153, 1799, 1564, 0},

    {15542, 14466, 14007, 13844, 12489, 10409, 9481, 9132, 8305, 6940, 6193,

     5867, 5458, 4743, 4291, 4047, 0},

    {15165, 14384, 14084, 13934, 12911, 11485, 10844, 10513, 10002, 8993, 8380,

     8051, 7711, 7036, 6514, 6233, 0},

    {15642, 14279, 13625, 13393, 12348, 9971, 8405, 7858, 7335, 6119, 4918,

     4376, 4185, 3719, 3231, 2860, 0},

    {13408, 13407, 11471, 11218, 11217, 11216, 9473, 9216, 6480, 3689, 2857,

     2690, 2256, 1732, 1405, 1302, 0},

    {16098, 15584, 15191, 14931, 14514, 13578, 12703, 12103, 11830, 11172,

     10475, 9867, 9695, 9281, 8825, 8389, 0},

    {15844, 14873, 14277, 13996, 13230, 11535, 10205, 9543, 9107, 8086, 7085,

     6419, 6214, 5713, 5195, 4731, 0},

    {16131, 15720, 15443, 15276, 14848, 13971, 13314, 12910, 12591, 11874,

     11225, 10788, 10573, 10077, 9585, 9209, 0},

    {16331, 16330, 12283, 11435, 11434, 11433, 8725, 8049, 6065, 4138, 3187,

     2842, 2529, 2171, 1907, 1745, 0},

    {16011, 15292, 14782, 14528, 14008, 12767, 11556, 10921, 10591, 9759, 8813,

     8043, 7855, 7383, 6863, 6282, 0},

    {16380, 16379, 15159, 14610, 14609, 14608, 12859, 12111, 11046, 9536, 8348,

     7713, 7216, 6533, 5964, 5546, 0},

    {16367, 16333, 16294, 16253, 16222, 16143, 16048, 15947, 15915, 15832,

     15731, 15619, 15589, 15512, 15416, 15310, 0},

    {15967, 15319, 14937, 14753, 14010, 12638, 11787, 11360, 10805, 9706, 8934,

     8515, 8166, 7456, 6911, 6575, 0},

    {4906, 3005, 2985, 2984, 875, 102, 83, 81, 47, 17, 12, 11, 8, 5, 4, 3, 0},

    {7217, 4346, 4269, 4264, 1924, 428, 340, 332, 280, 203, 179, 175, 171, 164,

     159, 157, 0},

    {16010, 15415, 15032, 14805, 14228, 13043, 12168, 11634, 11265, 10419, 9645,

     9110, 8892, 8378, 7850, 7437, 0},

    {8573, 5218, 5046, 5032, 2787, 771, 555, 533, 443, 286, 218, 205, 197, 181,

     168, 162, 0},

    {11474, 8095, 7822, 7796, 4632, 1443, 1046, 1004, 748, 351, 218, 194, 167,

     121, 93, 83, 0},

    {16152, 15764, 15463, 15264, 14925, 14189, 13536, 13070, 12846, 12314,

     11763, 11277, 11131, 10777, 10383, 10011, 0},

    {14187, 11654, 11043, 10919, 8498, 4885, 3778, 3552, 2947, 1835, 1283, 1134,

     998, 749, 585, 514, 0},

    {14162, 11527, 10759, 10557, 8601, 5417, 4105, 3753, 3286, 2353, 1708, 1473,

     1370, 1148, 959, 840, 0},

    {16205, 15902, 15669, 15498, 15213, 14601, 14068, 13674, 13463, 12970,

     12471, 12061, 11916, 11564, 11183, 10841, 0},

    {15043, 12972, 12092, 11792, 10265, 7446, 5934, 5379, 4883, 3825, 3036,

     2647, 2507, 2185, 1901, 1699, 0},

    {15320, 13694, 12782, 12352, 11191, 8936, 7433, 6671, 6255, 5366, 4622,

     4158, 4020, 3712, 3420, 3198, 0},

    {16255, 16020, 15768, 15600, 15416, 14963, 14440, 14006, 13875, 13534,

     13137, 12697, 12602, 12364, 12084, 11781, 0},

    {15627, 14503, 13906, 13622, 12557, 10527, 9269, 8661, 8117, 6933, 5994,

     5474, 5222, 4664, 4166, 3841, 0},

    {16366, 16365, 14547, 14160, 14159, 14158, 11969, 11473, 8735, 6147, 4911,

     4530, 3865, 3180, 2710, 2473, 0},

    {16257, 16038, 15871, 15754, 15536, 15071, 14673, 14390, 14230, 13842,

     13452, 13136, 13021, 12745, 12434, 12154, 0},

    {15855, 14971, 14338, 13939, 13239, 11782, 10585, 9805, 9444, 8623, 7846,

     7254, 7079, 6673, 6262, 5923, 0},

    {9492, 6318, 6197, 6189, 3004, 652, 489, 477, 333, 143, 96, 90, 78, 60, 50,

     47, 0},

    {16313, 16191, 16063, 15968, 15851, 15590, 15303, 15082, 14968, 14704,

     14427, 14177, 14095, 13899, 13674, 13457, 0},

    {8485, 5473, 5389, 5383, 2411, 494, 386, 377, 278, 150, 117, 112, 103, 89,

     81, 78, 0},

    {10497, 7154, 6959, 6943, 3788, 1004, 734, 709, 517, 238, 152, 138, 120, 90,

     72, 66, 0},

    {16317, 16226, 16127, 16040, 15955, 15762, 15547, 15345, 15277, 15111,

     14922, 14723, 14671, 14546, 14396, 14239, 0},

    {16382, 16381, 15858, 15540, 15539, 15538, 14704, 14168, 13768, 13092,

     12452, 11925, 11683, 11268, 10841, 10460, 0},

    {5974, 3798, 3758, 3755, 1275, 205, 166, 162, 95, 35, 26, 24, 18, 11, 8, 7,

     0},

    {3532, 2258, 2246, 2244, 731, 135, 118, 115, 87, 45, 36, 34, 29, 21, 17, 16,

     0},

    {7466, 4882, 4821, 4811, 2476, 886, 788, 771, 688, 531, 469, 457, 437, 400,

     369, 361, 0},

    {9580, 5772, 5291, 5216, 3444, 1496, 1025, 928, 806, 578, 433, 384, 366,

     331, 296, 273, 0},

    {10692, 7730, 7543, 7521, 4679, 1746, 1391, 1346, 1128, 692, 495, 458, 424,

     353, 291, 268, 0},

    {11040, 7132, 6549, 6452, 4377, 1875, 1253, 1130, 958, 631, 431, 370, 346,

     296, 253, 227, 0},

    {12687, 9332, 8701, 8585, 6266, 3093, 2182, 2004, 1683, 1072, 712, 608, 559,

     458, 373, 323, 0},

    {13429, 9853, 8860, 8584, 6806, 4039, 2862, 2478, 2239, 1764, 1409, 1224,

     1178, 1077, 979, 903, 0},

    {14685, 12163, 11061, 10668, 9101, 6345, 4871, 4263, 3908, 3200, 2668, 2368,

     2285, 2106, 1942, 1819, 0},

    {13295, 11302, 10999, 10945, 7947, 5036, 4490, 4385, 3391, 2185, 1836, 1757,

     1424, 998, 833, 785, 0},

    {4992, 2993, 2972, 2970, 1269, 575, 552, 549, 530, 505, 497, 495, 493, 489,

     486, 485, 0},

    {15419, 13862, 13104, 12819, 11429, 8753, 7220, 6651, 6020, 4667, 3663,

     3220, 2995, 2511, 2107, 1871, 0},

    {12468, 9263, 8912, 8873, 5758, 2193, 1625, 1556, 1187, 589, 371, 330, 283,

     200, 149, 131, 0},

    {15870, 15076, 14615, 14369, 13586, 12034, 10990, 10423, 9953, 8908, 8031,

     7488, 7233, 6648, 6101, 5712, 0},

    {1693, 978, 976, 975, 194, 18, 16, 15, 11, 7, 6, 5, 4, 3, 2, 1, 0},

    {7992, 5218, 5147, 5143, 2152, 366, 282, 276, 173, 59, 38, 35, 27, 16, 11,

     10, 0}};

typedef struct {

  int low;

  int high;

  int vobf;

} Tastat;

static inline INT mul_sbc_14bits(INT r, INT c) {

  return (((INT)r) * ((INT)c)) >> stat_bitsnew;

}

static inline INT ari_decode_14bits(HANDLE_FDK_BITSTREAM hBs, Tastat *s,

                                    const SHORT *RESTRICT c_freq, int cfl) {

  INT symbol;

  INT low, high, range, value;

  INT c;

  const SHORT *p;

  low = s->low;

  high = s->high;

  value = s->vobf;

  range = high - low + 1;

  c = (((int)(value - low + 1)) << stat_bitsnew) - ((int)1);

  p = (const SHORT *)(c_freq - 1);

  if (cfl == (VAL_ESC + 1)) {

    /* In 50% of all cases, the first entry is the right one, so we check it

     * prior to all others */

    if ((p[1] * range) > c) {

      p += 1;

      if ((p[8] * range) > c) {

        p += 8;

      }

      if ((p[4] * range) > c) {

        p += 4;

      }

      if ((p[2] * range) > c) {

        p += 2;

      }

      if ((p[1] * range) > c) {

        p += 1;

      }

    }

  } else if (cfl == 4) {

    if ((p[2] * range) > c) {

      p += 2;

    }

    if ((p[1] * range) > c) {

      p += 1;

    }

  } else if (cfl == 2) {

    if ((p[1] * range) > c) {

      p += 1;

    }

  } else if (cfl == 27) {

    const SHORT *p_24 = p + 24;

    if ((p[16] * range) > c) {

      p += 16;

    }

    if ((p[8] * range) > c) {

      p += 8;

    }

    if (p != p_24) {

      if ((p[4] * range) > c) {

        p += 4;

      }

    }

    if ((p[2] * range) > c) {

      p += 2;

    }

    if (p != &p_24[2]) {

      if ((p[1] * range) > c) {

        p += 1;

      }

    }

  }

  symbol = (INT)(p - (const SHORT *)(c_freq - 1));

  if (symbol) {

    high = low + mul_sbc_14bits(range, c_freq[symbol - 1]) - 1;

  }

  low += mul_sbc_14bits(range, c_freq[symbol]);

  USHORT us_high = (USHORT)high;

  USHORT us_low = (USHORT)low;

  while (1) {

    if (us_high & 0x8000) {

      if (!(us_low & 0x8000)) {

        if (us_low & 0x4000 && !(us_high & 0x4000)) {

          us_low -= 0x4000;

          us_high -= 0x4000;

          value -= 0x4000;

        } else

          break;

      }

    }

    us_low = us_low << 1;

    us_high = (us_high << 1) | 1;

    value = (value << 1) | FDKreadBit(hBs);

  }

  s->low = (int)us_low;

  s->high = (int)us_high;

  s->vobf = value & 0xFFFF;

  return symbol;

}

static inline void copyTableAmrwbArith2(UCHAR tab[], int sizeIn, int sizeOut) {

  int i;

  int j;

  int k = 2;

  tab += 2;

  if (sizeIn < sizeOut) {

    tab[sizeOut + 0] = tab[sizeIn + 0];

    tab[sizeOut + 1] = tab[sizeIn + 1];

    if (sizeIn < (sizeOut >> 2)) {

      k = 8;

    } else if (sizeIn == (sizeOut >> 2)) {

      k = 4;

    }

    i = sizeOut - 1;

    j = sizeIn - 1;

    for (; i >= 0; j--) {

      UCHAR tq_data0 = tab[j];

      for (int l = (k >> 1); l > 0; l--) {

        tab[i--] = tq_data0;

        tab[i--] = tq_data0;

      }

    }

  } else {

    if (sizeOut < (sizeIn >> 2)) {

      k = 8;

    } else if (sizeOut == (sizeIn >> 2)) {

      k = 4;

    }

    for (i = 0, j = 0; i < sizeOut; j += k) {

      UCHAR tq_data0 = tab[j];

      tab[i++] = tq_data0;

    }

    tab[sizeOut + 0] = tab[sizeIn + 0];

    tab[sizeOut + 1] = tab[sizeIn + 1];

  }

}

static inline ULONG get_pk_v2(ULONG s) {

  const ULONG *p = ari_merged_hash_ps;

  ULONG s12 = (fMax((UINT)s, (UINT)1) << 12) - 1;

  if (s12 > p[485]) {

    p += 486; /* 742 - 256 = 486 */

  } else {

    if (s12 > p[255]) p += 256;

  }

  if (s12 > p[127]) {

    p += 128;

  }

  if (s12 > p[63]) {

    p += 64;

  }

  if (s12 > p[31]) {

    p += 32;

  }

  if (s12 > p[15]) {

    p += 16;

  }

  if (s12 > p[7]) {

    p += 8;

  }

  if (s12 > p[3]) {

    p += 4;

  }

  if (s12 > p[1]) {

    p += 2;

  }

  ULONG j = p[0];

  if (s12 > j) j = p[1];

  if (s != (j >> 12)) j >>= 6;

  return (j & 0x3F);

}

static ARITH_CODING_ERROR decode2(HANDLE_FDK_BITSTREAM bbuf,

                                  UCHAR *RESTRICT c_prev,

                                  FIXP_DBL *RESTRICT pSpectralCoefficient,

                                  INT n, INT nt) {

  Tastat as;

  int i, l, r;

  INT lev, esc_nb, pki;

  USHORT state_inc;

  UINT s;

  ARITH_CODING_ERROR ErrorStatus = ARITH_CODER_OK;

  int c_3 = 0; /* context of current frame 3 time steps ago */

  int c_2 = 0; /* context of current frame 2 time steps ago */

  int c_1 = 0; /* context of current frame 1 time steps ago */

  int c_0 = 1; /* context of current frame to be calculated */

  /* ari_start_decoding_14bits */

  as.low = 0;

  as.high = ari_q4new;

  as.vobf = FDKreadBits(bbuf, cbitsnew);

  /* arith_map_context */

  state_inc = c_prev[0] << 12;

  for (i = 0; i < n; i++) {

    /* arith_get_context */

    s = state_inc >> 8;

    s = s + (c_prev[i + 1] << 8);

    s = (s << 4) + c_1;

    state_inc = s;

    if (i > 3) {

      /* Cumulative amplitude below 2 */

      if ((c_1 + c_2 + c_3) < 5) {

        s += 0x10000;

      }

    }

    /* MSBs decoding */

    for (lev = esc_nb = 0;;) {

      pki = get_pk_v2(s + (esc_nb << (VAL_ESC + 1)));

      r = ari_decode_14bits(bbuf, &as, ari_pk[pki], VAL_ESC + 1);

      if (r < VAL_ESC) {

        break;

      }

      lev++;

      if (lev > 23) return ARITH_CODER_ERROR;

      if (esc_nb < 7) {

        esc_nb++;

      }

    }

    /* Stop symbol */

    if (r == 0) {

      if (esc_nb > 0) {

        break; /* Stop symbol */

      }

      c_0 = 1;

    } else /* if (r==0) */

    {

      INT b = r >> 2;

      INT a = r & 0x3;

      /* LSBs decoding */

      for (l = 0; l < lev; l++) {

        {

          int pidx = (a == 0) ? 1 : ((b == 0) ? 0 : 2);

          r = ari_decode_14bits(bbuf, &as, ari_lsb2[pidx], 4);

        }

        a = (a << 1) | (r & 1);

        b = (b << 1) | (r >> 1);

      }

      pSpectralCoefficient[2 * i] = (FIXP_DBL)a;

      pSpectralCoefficient[2 * i + 1] = (FIXP_DBL)b;

      c_0 = a + b + 1;

      if (c_0 > 0xF) {

        c_0 = 0xF;

      }

    } /* endif (r==0) */

    /* arith_update_context */

    c_3 = c_2;

    c_2 = c_1;

    c_1 = c_0;

    c_prev[i] = (UCHAR)c_0;

  } /* for (i=0; i<n; i++) */

  FDKpushBack(bbuf, cbitsnew - 2);

  /* We need to run only from 0 to i-1 since all other q[i][1].a,b will be

   * cleared later */

  int j = i;

  for (i = 0; i < j; i++) {

    int bits = 0;

    if (pSpectralCoefficient[2 * i] != (FIXP_DBL)0) bits++;

    if (pSpectralCoefficient[2 * i + 1] != (FIXP_DBL)0) bits++;

    if (bits) {

      r = FDKreadBits(bbuf, bits);

      if (pSpectralCoefficient[2 * i] != (FIXP_DBL)0 && !(r >> (bits - 1))) {

        pSpectralCoefficient[2 * i] = -pSpectralCoefficient[2 * i];

      }

      if (pSpectralCoefficient[2 * i + 1] != (FIXP_DBL)0 && !(r & 1)) {

        pSpectralCoefficient[2 * i + 1] = -pSpectralCoefficient[2 * i + 1];

      }

    }

  }

  FDKmemset(&c_prev[i], 1, sizeof(c_prev[0]) * (nt - i));

  return ErrorStatus;

}

CArcoData *CArco_Create(void) { return GetArcoData(); }

void CArco_Destroy(CArcoData *pArcoData) { FreeArcoData(&pArcoData); }

ARITH_CODING_ERROR CArco_DecodeArithData(CArcoData *pArcoData,

                                         HANDLE_FDK_BITSTREAM hBs,

                                         FIXP_DBL *RESTRICT mdctSpectrum,

                                         int lg, int lg_max,

                                         int arith_reset_flag) {

  ARITH_CODING_ERROR ErrorStatus = ARITH_CODER_OK;

  /* Check lg and lg_max consistency. */

  if (lg_max < lg) {

    return ARITH_CODER_ERROR;

  }

  FDKmemclear(mdctSpectrum, lg_max * sizeof(FIXP_DBL));

  /* arith_map_context */

  if (arith_reset_flag) {

    FDKmemclear(pArcoData->c_prev,

                sizeof(pArcoData->c_prev[0]) * ((lg_max / 2) + 4));

  } else {

    if (lg_max != pArcoData->m_numberLinesPrev) {

      if (pArcoData->m_numberLinesPrev == 0) {

        /* Cannot decode without a valid AC context */

        return ARITH_CODER_ERROR;

      }

      /* short-to-long or long-to-short block transition */

      /* Current length differs compared to previous - perform up/downmix of

       * m_qbuf */

      copyTableAmrwbArith2(pArcoData->c_prev, pArcoData->m_numberLinesPrev >> 1,

                           lg_max >> 1);

    }

  }

  pArcoData->m_numberLinesPrev = lg_max;

  if (lg > 0) {

    ErrorStatus =

        decode2(hBs, pArcoData->c_prev + 2, mdctSpectrum, lg >> 1, lg_max >> 1);

  } else {

    FDKmemset(&pArcoData->c_prev[2], 1,

              sizeof(pArcoData->c_prev[2]) * (lg_max >> 1));

  }

  if ((INT)FDKgetValidBits(hBs) < 0) {

    return ARITH_CODER_ERROR;

  }

  return ErrorStatus;

}