Upgrade to FDKv2

Bug: 71430241
Test: CTS DecoderTest and DecoderTestAacDrc

original-Change-Id: Iaa20f749b8a04d553b20247cfe1a8930ebbabe30

Apply clang-format also on header files.

original-Change-Id: I14de1ef16bbc79ec0283e745f98356a10efeb2e4

Fixes for MPEG-D DRC

original-Change-Id: If1de2d74bbbac84b3f67de3b88b83f6a23b8a15c

Catch unsupported tw_mdct at an early stage

original-Change-Id: Ied9dd00d754162a0e3ca1ae3e6b854315d818afe

Fixing PVC transition frames

original-Change-Id: Ib75725abe39252806c32d71176308f2c03547a4e

Move qmf bands sanity check

original-Change-Id: Iab540c3013c174d9490d2ae100a4576f51d8dbc4

Initialize scaling variable

original-Change-Id: I3c4087101b70e998c71c1689b122b0d7762e0f9e

Add 16 qmf band configuration to getSlotNrgHQ()

original-Change-Id: I49a5d30f703a1b126ff163df9656db2540df21f1

Always apply byte alignment at the end of the AudioMuxElement

original-Change-Id: I42d560287506d65d4c3de8bfe3eb9a4ebeb4efc7

Setup SBR element only if no parse error exists

original-Change-Id: I1915b73704bc80ab882b9173d6bec59cbd073676

Additional array index check in HCR

original-Change-Id: I18cc6e501ea683b5009f1bbee26de8ddd04d8267

Fix fade-in index selection in concealment module

original-Change-Id: Ibf802ed6ed8c05e9257e1f3b6d0ac1162e9b81c1

Enable explicit backward compatible parser for AAC_LD

original-Change-Id: I27e9c678dcb5d40ed760a6d1e06609563d02482d

Skip spatial specific config in explicit backward compatible ASC

original-Change-Id: Iff7cc365561319e886090cedf30533f562ea4d6e

Update flags description in decoder API

original-Change-Id: I9a5b4f8da76bb652f5580cbd3ba9760425c43830

Add QMF domain reset function

original-Change-Id: I4f89a8a2c0277d18103380134e4ed86996e9d8d6

DRC upgrade v2.1.0

original-Change-Id: I5731c0540139dab220094cd978ef42099fc45b74

Fix integer overflow in sqrtFixp_lookup()

original-Change-Id: I429a6f0d19aa2cc957e0f181066f0ca73968c914

Fix integer overflow in invSqrtNorm2()

original-Change-Id: I84de5cbf9fb3adeb611db203fe492fabf4eb6155

Fix integer overflow in GenerateRandomVector()

original-Change-Id: I3118a641008bd9484d479e5b0b1ee2b5d7d44d74

Fix integer overflow in adjustTimeSlot_EldGrid()

original-Change-Id: I29d503c247c5c8282349b79df940416a512fb9d5

Fix integer overflow in FDKsbrEnc_codeEnvelope()

original-Change-Id: I6b34b61ebb9d525b0c651ed08de2befc1f801449

Follow-up on: Fix integer overflow in adjustTimeSlot_EldGrid()

original-Change-Id: I6f8f578cc7089e5eb7c7b93e580b72ca35ad689a

Fix integer overflow in get_pk_v2()

original-Change-Id: I63375bed40d45867f6eeaa72b20b1f33e815938c

Fix integer overflow in Syn_filt_zero()

original-Change-Id: Ie0c02fdfbe03988f9d3b20d10cd9fe4c002d1279

Fix integer overflow in CFac_CalcFacSignal()

original-Change-Id: Id2d767c40066c591b51768e978eb8af3b803f0c5

Fix integer overflow in FDKaacEnc_FDKaacEnc_calcPeNoAH()

original-Change-Id: Idcbd0f4a51ae2550ed106aa6f3d678d1f9724841

Fix integer overflow in sbrDecoder_calculateGainVec()

original-Change-Id: I7081bcbe29c5cede9821b38d93de07c7add2d507

Fix integer overflow in CLpc_SynthesisLattice()

original-Change-Id: I4a95ddc18de150102352d4a1845f06094764c881

Fix integer overflow in Pred_Lt4()

original-Change-Id: I4dbd012b2de7d07c3e70a47b92e3bfae8dbc750a

Fix integer overflow in FDKsbrEnc_InitSbrFastTransientDetector()

original-Change-Id: I788cbec1a4a00f44c2f3a72ad7a4afa219807d04

Fix unsigned integer overflow in FDKaacEnc_WriteBitstream()

original-Change-Id: I68fc75166e7d2cd5cd45b18dbe3d8c2a92f1822a

Fix unsigned integer overflow in FDK_MetadataEnc_Init()

original-Change-Id: Ie8d025f9bcdb2442c704bd196e61065c03c10af4

Fix overflow in pseudo random number generators

original-Change-Id: I3e2551ee01356297ca14e3788436ede80bd5513c

Fix unsigned integer overflow in sbrDecoder_Parse()

original-Change-Id: I3f231b2f437e9c37db4d5b964164686710eee971

Fix unsigned integer overflow in longsub()

original-Change-Id: I73c2bc50415cac26f1f5a29e125bbe75f9180a6e

Fix unsigned integer overflow in CAacDecoder_DecodeFrame()

original-Change-Id: Ifce2db4b1454b46fa5f887e9d383f1cc43b291e4

Fix overflow at CLpdChannelStream_Read()

original-Change-Id: Idb9d822ce3a4272e4794b643644f5434e2d4bf3f

Fix unsigned integer overflow in Hcr_State_BODY_SIGN_ESC__ESC_WORD()

original-Change-Id: I1ccf77c0015684b85534c5eb97162740a870b71c

Fix unsigned integer overflow in UsacConfig_Parse()

original-Change-Id: Ie6d27f84b6ae7eef092ecbff4447941c77864d9f

Fix unsigned integer overflow in aacDecoder_drcParse()

original-Change-Id: I713f28e883eea3d70b6fa56a7b8f8c22bcf66ca0

Fix unsigned integer overflow in aacDecoder_drcReadCompression()

original-Change-Id: Ia34dfeb88c4705c558bce34314f584965cafcf7a

Fix unsigned integer overflow in CDataStreamElement_Read()

original-Change-Id: Iae896cc1d11f0a893d21be6aa90bd3e60a2c25f0

Fix unsigned integer overflow in transportDec_AdjustEndOfAccessUnit()

original-Change-Id: I64cf29a153ee784bb4a16fdc088baabebc0007dc

Fix unsigned integer overflow in transportDec_GetAuBitsRemaining()

original-Change-Id: I975b3420faa9c16a041874ba0db82e92035962e4

Fix unsigned integer overflow in extractExtendedData()

original-Change-Id: I2a59eb09e2053cfb58dfb75fcecfad6b85a80a8f

Fix signed integer overflow in CAacDecoder_ExtPayloadParse()

original-Change-Id: I4ad5ca4e3b83b5d964f1c2f8c5e7b17c477c7929

Fix unsigned integer overflow in CAacDecoder_DecodeFrame()

original-Change-Id: I29a39df77d45c52a0c9c5c83c1ba81f8d0f25090

Follow-up on: Fix integer overflow in CLpc_SynthesisLattice()

original-Change-Id: I8fb194ffc073a3432a380845be71036a272d388f

Fix signed integer overflow in _interpolateDrcGain()

original-Change-Id: I879ec9ab14005069a7c47faf80e8bc6e03d22e60

Fix unsigned integer overflow in FDKreadBits()

original-Change-Id: I1f47a6a8037ff70375aa8844947d5681bb4287ad

Fix unsigned integer overflow in FDKbyteAlign()

original-Change-Id: Id5f3a11a0c9e50fc6f76ed6c572dbd4e9f2af766

Fix unsigned integer overflow in FDK_get32()

original-Change-Id: I9d33b8e97e3d38cbb80629cb859266ca0acdce96

Fix unsigned integer overflow in FDK_pushBack()

original-Change-Id: Ic87f899bc8c6acf7a377a8ca7f3ba74c3a1e1c19

Fix unsigned integer overflow in FDK_pushForward()

original-Change-Id: I3b754382f6776a34be1602e66694ede8e0b8effc

Fix unsigned integer overflow in ReadPsData()

original-Change-Id: I25361664ba8139e32bbbef2ca8c106a606ce9c37

Fix signed integer overflow in E_UTIL_residu()

original-Change-Id: I8c3abd1f437ee869caa8fb5903ce7d3d641b6aad

REVERT: Follow-up on: Integer overflow in CLpc_SynthesisLattice().

original-Change-Id: I3d340099acb0414795c8dfbe6362bc0a8f045f9b

Follow-up on: Fix integer overflow in CLpc_SynthesisLattice()

original-Change-Id: I4aedb8b3a187064e9f4d985175aa55bb99cc7590

Follow-up on: Fix unsigned integer overflow in aacDecoder_drcParse()

original-Change-Id: I2aa2e13916213bf52a67e8b0518e7bf7e57fb37d

Fix integer overflow in acelp

original-Change-Id: Ie6390c136d84055f8b728aefbe4ebef6e029dc77

Fix unsigned integer overflow in aacDecoder_UpdateBitStreamCounters()

original-Change-Id: I391ffd97ddb0b2c184cba76139bfb356a3b4d2e2

Adjust concealment default settings

original-Change-Id: I6a95db935a327c47df348030bcceafcb29f54b21

Saturate estimatedStartPos

original-Change-Id: I27be2085e0ae83ec9501409f65e003f6bcba1ab6

Negative shift exponent in _interpolateDrcGain()

original-Change-Id: I18edb26b26d002aafd5e633d4914960f7a359c29

Negative shift exponent in calculateICC()

original-Change-Id: I3dcd2ae98d2eb70ee0d59750863cbb2a6f4f8aba

Too large shift exponent in FDK_put()

original-Change-Id: Ib7d9aaa434d2d8de4a13b720ca0464b31ca9b671

Too large shift exponent in CalcInvLdData()

original-Change-Id: I43e6e78d4cd12daeb1dcd5d82d1798bdc2550262

Member access within null pointer of type SBR_CHANNEL

original-Change-Id: Idc5e4ea8997810376d2f36bbdf628923b135b097

Member access within null pointer of type CpePersistentData

original-Change-Id: Ib6c91cb0d37882768e5baf63324e429589de0d9d

Member access within null pointer FDKaacEnc_psyMain()

original-Change-Id: I7729b7f4479970531d9dc823abff63ca52e01997

Member access within null pointer FDKaacEnc_GetPnsParam()

original-Change-Id: I9aa3b9f3456ae2e0f7483dbd5b3dde95fc62da39

Member access within null pointer FDKsbrEnc_EnvEncodeFrame()

original-Change-Id: I67936f90ea714e90b3e81bc0dd1472cc713eb23a

Add HCR sanity check

original-Change-Id: I6c1d9732ebcf6af12f50b7641400752f74be39f7

Fix memory issue for HBE edge case with 8:3 SBR

original-Change-Id: I11ea58a61e69fbe8bf75034b640baee3011e63e9

Additional SBR parametrization sanity check for ELD

original-Change-Id: Ie26026fbfe174c2c7b3691f6218b5ce63e322140

Add MPEG-D DRC channel layout check

original-Change-Id: Iea70a74f171b227cce636a9eac4ba662777a2f72

Additional out-of-bounds checks in MPEG-D DRC

original-Change-Id: Ife4a8c3452c6fde8a0a09e941154a39a769777d4

Change-Id: Ic63cb2f628720f54fe9b572b0cb528e2599c624e

1 files changed, 236 insertions, 183 deletions

diff --git a/libFDK/include/qmf.h b/libFDK/include/qmf.h
index be69477..609c6f1 100644
--- a/libFDK/include/qmf.h
+++ b/libFDK/include/qmf.h
@@ -1,74 +1,85 @@
-
-/* -----------------------------------------------------------------------------------------------------------
+/* -----------------------------------------------------------------------------
 Software License for The Fraunhofer FDK AAC Codec Library for Android
 
-© Copyright  1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
-  All rights reserved.
+© 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.
+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:
+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 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
+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.
+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.
+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."
+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.
+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.
+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.
+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
 
@@ -79,170 +90,212 @@ Am Wolfsmantel 33
 
 www.iis.fraunhofer.de/amm
 amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
+----------------------------------------------------------------------------- */
+
+/******************* Library for basic calculation routines ********************
+
+   Author(s):
+
+   Description:
+
+*******************************************************************************/
 
 /*!
   \file   qmf.h
-  \brief  Complex qmf analysis/synthesis   
+  \brief  Complex qmf analysis/synthesis
   \author Markus Werner
 
 */
-#ifndef __QMF_H
-#define __QMF_H
-
 
+#ifndef QMF_H
+#define QMF_H
 
 #include "common_fix.h"
 #include "FDK_tools_rom.h"
 #include "dct.h"
 
-/*
- * Filter coefficient type definition
- */
-#ifdef QMF_DATA_16BIT
-#define FIXP_QMF FIXP_SGL
-#define FX_DBL2FX_QMF FX_DBL2FX_SGL
-#define FX_QMF2FX_DBL FX_SGL2FX_DBL
-#define QFRACT_BITS FRACT_BITS
-#else
-#define FIXP_QMF FIXP_DBL
-#define FX_DBL2FX_QMF
-#define FX_QMF2FX_DBL
-#define QFRACT_BITS DFRACT_BITS
-#endif
-
-/* ARM neon optimized QMF analysis filter requires 32 bit input.
-   Implemented for RVCT only, currently disabled. See src/arm/qmf_arm.cpp:45 */
 #define FIXP_QAS FIXP_PCM
 #define QAS_BITS SAMPLE_BITS
 
-#ifdef QMFSYN_STATES_16BIT
-#define FIXP_QSS FIXP_SGL
-#define QSS_BITS FRACT_BITS
-#else
 #define FIXP_QSS FIXP_DBL
 #define QSS_BITS DFRACT_BITS
-#endif
 
 /* Flags for QMF intialization */
 /* Low Power mode flag */
-#define QMF_FLAG_LP           1
-/* Filter is not symetric. This flag is set internally in the QMF initialization as required. */
+#define QMF_FLAG_LP 1
+/* Filter is not symmetric. This flag is set internally in the QMF
+ * initialization as required. */
+/* DO NOT PASS THIS FLAG TO qmfInitAnalysisFilterBank or
+ * qmfInitSynthesisFilterBank */
 #define QMF_FLAG_NONSYMMETRIC 2
 /* Complex Low Delay Filter Bank (or std symmetric filter bank) */
-#define QMF_FLAG_CLDFB        4
+#define QMF_FLAG_CLDFB 4
 /* Flag indicating that the states should be kept. */
-#define QMF_FLAG_KEEP_STATES  8
+#define QMF_FLAG_KEEP_STATES 8
 /* Complex Low Delay Filter Bank used in MPEG Surround Encoder */
-#define QMF_FLAG_MPSLDFB     16
-/* Complex Low Delay Filter Bank used in MPEG Surround Encoder allows a optimized calculation of the modulation in qmfForwardModulationHQ() */
-#define QMF_FLAG_MPSLDFB_OPTIMIZE_MODULATION  32
-/* Flag to indicate HE-AAC down-sampled SBR mode (decoder) -> adapt analysis post twiddling */
-#define QMF_FLAG_DOWNSAMPLED  64
-
-
-typedef struct
-{
-  int lb_scale;        /*!< Scale of low band area                   */
-  int ov_lb_scale;     /*!< Scale of adjusted overlap low band area  */
-  int hb_scale;        /*!< Scale of high band area                  */
-  int ov_hb_scale;     /*!< Scale of adjusted overlap high band area */
+#define QMF_FLAG_MPSLDFB 16
+/* Complex Low Delay Filter Bank used in MPEG Surround Encoder allows a
+ * optimized calculation of the modulation in qmfForwardModulationHQ() */
+#define QMF_FLAG_MPSLDFB_OPTIMIZE_MODULATION 32
+/* Flag to indicate HE-AAC down-sampled SBR mode (decoder) -> adapt analysis
+ * post twiddling */
+#define QMF_FLAG_DOWNSAMPLED 64
+
+#define QMF_MAX_SYNTHESIS_BANDS (64)
+
+/*!
+ * \brief Algorithmic scaling in sbrForwardModulation()
+ *
+ * The scaling in sbrForwardModulation() is caused by:
+ *
+ *   \li 1 R_SHIFT in sbrForwardModulation()
+ *   \li 5/6 R_SHIFT in dct3() if using 32/64 Bands
+ *   \li 1 omitted gain of 2.0 in qmfForwardModulation()
+ */
+#define ALGORITHMIC_SCALING_IN_ANALYSIS_FILTERBANK 7
+
+/*!
+ * \brief Algorithmic scaling in cplxSynthesisQmfFiltering()
+ *
+ * The scaling in cplxSynthesisQmfFiltering() is caused by:
+ *
+ *   \li  5/6 R_SHIFT in dct2() if using 32/64 Bands
+ *   \li  1 omitted gain of 2.0 in qmfInverseModulation()
+ *   \li -6 division by 64 in synthesis filterbank
+ *   \li x bits external influence
+ */
+#define ALGORITHMIC_SCALING_IN_SYNTHESIS_FILTERBANK 1
+
+typedef struct {
+  int lb_scale;    /*!< Scale of low band area                   */
+  int ov_lb_scale; /*!< Scale of adjusted overlap low band area  */
+  int hb_scale;    /*!< Scale of high band area                  */
+  int ov_hb_scale; /*!< Scale of adjusted overlap high band area */
 } QMF_SCALE_FACTOR;
 
-struct QMF_FILTER_BANK
-{
-  const FIXP_PFT *p_filter;     /*!< Pointer to filter coefficients */
+struct QMF_FILTER_BANK {
+  const FIXP_PFT *p_filter; /*!< Pointer to filter coefficients */
 
-  void *FilterStates;           /*!< Pointer to buffer of filter states
-                                     FIXP_PCM in analyse and
-                                     FIXP_DBL in synthesis filter */
-  int FilterSize;               /*!< Size of prototype filter. */
-  const FIXP_QTW *t_cos;        /*!< Modulation tables. */
+  void *FilterStates;    /*!< Pointer to buffer of filter states
+                              FIXP_PCM in analyse and
+                              FIXP_DBL in synthesis filter */
+  int FilterSize;        /*!< Size of prototype filter. */
+  const FIXP_QTW *t_cos; /*!< Modulation tables. */
   const FIXP_QTW *t_sin;
-  int filterScale;              /*!< filter scale */
-
-  int no_channels;              /*!< Total number of channels (subbands) */
-  int no_col;                   /*!< Number of time slots       */
-  int lsb;                      /*!< Top of low subbands */
-  int usb;                      /*!< Top of high subbands */
+  int filterScale; /*!< filter scale */
 
-  int outScalefactor;           /*!< Scale factor of output data (syn only) */
-  FIXP_DBL outGain;             /*!< Gain output data (syn only) (init with 0x80000000 to ignore) */
+  int no_channels; /*!< Total number of channels (subbands) */
+  int no_col;      /*!< Number of time slots       */
+  int lsb;         /*!< Top of low subbands */
+  int usb;         /*!< Top of high subbands */
 
-  UINT flags;                   /*!< flags */
-  UCHAR p_stride;               /*!< Stride Factor of polyphase filters */
+  int synScalefactor; /*!< Scale factor of synthesis qmf (syn only) */
+  int outScalefactor; /*!< Scale factor of output data (syn only) */
+  FIXP_DBL outGain_m; /*!< Mantissa of gain output data (syn only) (init with
+                         0x80000000 to ignore) */
+  int outGain_e;      /*!< Exponent of gain output data (syn only) */
 
+  UINT flags;     /*!< flags */
+  UCHAR p_stride; /*!< Stride Factor of polyphase filters */
 };
 
 typedef struct QMF_FILTER_BANK *HANDLE_QMF_FILTER_BANK;
 
-void
-qmfAnalysisFiltering( HANDLE_QMF_FILTER_BANK anaQmf,  /*!< Handle of Qmf Analysis Bank   */
-                      FIXP_QMF **qmfReal,             /*!< Pointer to real subband slots */
-                      FIXP_QMF **qmfImag,             /*!< Pointer to imag subband slots */
-                      QMF_SCALE_FACTOR *scaleFactor,  /*!< Scale factors of QMF data     */
-                      const INT_PCM *timeIn,          /*!< Time signal */
-                      const int  stride,              /*!< Stride factor of audio data   */
-                      FIXP_QMF  *pWorkBuffer          /*!< pointer to temporal working buffer */
-                      );
-
-void
-qmfSynthesisFiltering( HANDLE_QMF_FILTER_BANK synQmf,       /*!< Handle of Qmf Synthesis Bank  */
-                       FIXP_QMF  **QmfBufferReal,           /*!< Pointer to real subband slots */
-                       FIXP_QMF  **QmfBufferImag,           /*!< Pointer to imag subband slots */
-                       const QMF_SCALE_FACTOR *scaleFactor, /*!< Scale factors of QMF data     */
-                       const int   ov_len,                  /*!< Length of band overlap        */
-                       INT_PCM    *timeOut,                 /*!< Time signal */
-                       const int   stride,                  /*!< Stride factor of audio data   */
-                       FIXP_QMF   *pWorkBuffer              /*!< pointer to temporal working buffer */
-                       );
-
-int
-qmfInitAnalysisFilterBank( HANDLE_QMF_FILTER_BANK h_Qmf, /*!< QMF Handle */
-                           FIXP_QAS *pFilterStates,      /*!< Pointer to filter state buffer */
-                           int noCols,                   /*!< Number of time slots  */
-                           int lsb,                      /*!< Number of lower bands */
-                           int usb,                      /*!< Number of upper bands */
-                           int no_channels,              /*!< Number of critically sampled bands */
-                           int flags);                   /*!< Flags */
-
-void
-qmfAnalysisFilteringSlot( HANDLE_QMF_FILTER_BANK anaQmf,  /*!< Handle of Qmf Synthesis Bank  */
-                          FIXP_QMF      *qmfReal,         /*!< Low and High band, real */
-                          FIXP_QMF      *qmfImag,         /*!< Low and High band, imag */
-                          const INT_PCM *timeIn,          /*!< Pointer to input */
-                          const int      stride,          /*!< stride factor of input */
-                          FIXP_QMF      *pWorkBuffer      /*!< pointer to temporal working buffer */
-                         );
-
-int
-qmfInitSynthesisFilterBank( HANDLE_QMF_FILTER_BANK h_Qmf, /*!< QMF Handle */
-                            FIXP_QSS *pFilterStates,      /*!< Pointer to filter state buffer */
-                            int noCols,                   /*!< Number of time slots  */
-                            int lsb,                      /*!< Number of lower bands */
-                            int usb,                      /*!< Number of upper bands */
-                            int no_channels,              /*!< Number of critically sampled bands */
-                            int flags);                   /*!< Flags */
-
-void qmfSynthesisFilteringSlot( HANDLE_QMF_FILTER_BANK  synQmf,
-                                const FIXP_QMF *realSlot,
-                                const FIXP_QMF *imagSlot,
-                                const int       scaleFactorLowBand,
-                                const int       scaleFactorHighBand,
-                                INT_PCM        *timeOut,
-                                const int       stride,
-                                FIXP_QMF       *pWorkBuffer);
-
-void
-qmfChangeOutScalefactor (HANDLE_QMF_FILTER_BANK synQmf,     /*!< Handle of Qmf Synthesis Bank */
-                         int outScalefactor                 /*!< New scaling factor for output data */
-                        );
-
-void
-qmfChangeOutGain (HANDLE_QMF_FILTER_BANK synQmf,     /*!< Handle of Qmf Synthesis Bank */
-                  FIXP_DBL outputGain                /*!< New gain for output data */
-                 );
-
-
-
-#endif /* __QMF_H */
+void qmfAnalysisFiltering(
+    HANDLE_QMF_FILTER_BANK anaQmf, /*!< Handle of Qmf Analysis Bank   */
+    FIXP_DBL **qmfReal,            /*!< Pointer to real subband slots */
+    FIXP_DBL **qmfImag,            /*!< Pointer to imag subband slots */
+    QMF_SCALE_FACTOR *scaleFactor, /*!< Scale factors of QMF data     */
+    const LONG *timeIn,            /*!< Time signal */
+    const int timeIn_e,            /*!< Exponent of audio data        */
+    const int stride,              /*!< Stride factor of audio data   */
+    FIXP_DBL *pWorkBuffer          /*!< pointer to temporary working buffer */
+);
+
+void qmfAnalysisFiltering(
+    HANDLE_QMF_FILTER_BANK anaQmf, /*!< Handle of Qmf Analysis Bank   */
+    FIXP_DBL **qmfReal,            /*!< Pointer to real subband slots */
+    FIXP_DBL **qmfImag,            /*!< Pointer to imag subband slots */
+    QMF_SCALE_FACTOR *scaleFactor, /*!< Scale factors of QMF data     */
+    const INT_PCM *timeIn,         /*!< Time signal */
+    const int timeIn_e,            /*!< Exponent of audio data        */
+    const int stride,              /*!< Stride factor of audio data   */
+    FIXP_DBL *pWorkBuffer          /*!< pointer to temporal working buffer */
+);
+
+void qmfSynthesisFiltering(
+    HANDLE_QMF_FILTER_BANK synQmf,       /*!< Handle of Qmf Synthesis Bank  */
+    FIXP_DBL **QmfBufferReal,            /*!< Pointer to real subband slots */
+    FIXP_DBL **QmfBufferImag,            /*!< Pointer to imag subband slots */
+    const QMF_SCALE_FACTOR *scaleFactor, /*!< Scale factors of QMF data     */
+    const int ov_len,                    /*!< Length of band overlap        */
+    INT_PCM *timeOut,                    /*!< Time signal */
+    const INT stride,                    /*!< Stride factor of audio data   */
+    FIXP_DBL *pWorkBuffer /*!< pointer to temporary working buffer. It must be
+                             aligned */
+);
+
+int qmfInitAnalysisFilterBank(
+    HANDLE_QMF_FILTER_BANK h_Qmf, /*!< QMF Handle */
+    FIXP_QAS *pFilterStates,      /*!< Pointer to filter state buffer */
+    int noCols,                   /*!< Number of time slots  */
+    int lsb,                      /*!< Number of lower bands */
+    int usb,                      /*!< Number of upper bands */
+    int no_channels,              /*!< Number of critically sampled bands */
+    int flags);                   /*!< Flags */
+
+void qmfAnalysisFilteringSlot(
+    HANDLE_QMF_FILTER_BANK anaQmf, /*!< Handle of Qmf Synthesis Bank  */
+    FIXP_DBL *qmfReal,             /*!< Low and High band, real */
+    FIXP_DBL *qmfImag,             /*!< Low and High band, imag */
+    const LONG *timeIn,            /*!< Pointer to input */
+    const int stride,              /*!< stride factor of input */
+    FIXP_DBL *pWorkBuffer          /*!< pointer to temporary working buffer */
+);
+
+void qmfAnalysisFilteringSlot(
+    HANDLE_QMF_FILTER_BANK anaQmf, /*!< Handle of Qmf Synthesis Bank  */
+    FIXP_DBL *qmfReal,             /*!< Low and High band, real */
+    FIXP_DBL *qmfImag,             /*!< Low and High band, imag */
+    const INT_PCM *timeIn,         /*!< Pointer to input */
+    const int stride,              /*!< stride factor of input */
+    FIXP_DBL *pWorkBuffer          /*!< pointer to temporal working buffer */
+);
+int qmfInitSynthesisFilterBank(
+    HANDLE_QMF_FILTER_BANK h_Qmf, /*!< QMF Handle */
+    FIXP_QSS *pFilterStates,      /*!< Pointer to filter state buffer */
+    int noCols,                   /*!< Number of time slots  */
+    int lsb,                      /*!< Number of lower bands */
+    int usb,                      /*!< Number of upper bands */
+    int no_channels,              /*!< Number of critically sampled bands */
+    int flags);                   /*!< Flags */
+
+void qmfSynthesisFilteringSlot(HANDLE_QMF_FILTER_BANK synQmf,
+                               const FIXP_DBL *realSlot,
+                               const FIXP_DBL *imagSlot,
+                               const int scaleFactorLowBand,
+                               const int scaleFactorHighBand, INT_PCM *timeOut,
+                               const int timeOut_e, FIXP_DBL *pWorkBuffer);
+
+void qmfChangeOutScalefactor(
+    HANDLE_QMF_FILTER_BANK synQmf, /*!< Handle of Qmf Synthesis Bank */
+    int outScalefactor             /*!< New scaling factor for output data */
+);
+
+int qmfGetOutScalefactor(
+    HANDLE_QMF_FILTER_BANK synQmf /*!< Handle of Qmf Synthesis Bank */
+);
+
+void qmfChangeOutGain(
+    HANDLE_QMF_FILTER_BANK synQmf, /*!< Handle of Qmf Synthesis Bank */
+    FIXP_DBL outputGain,           /*!< New gain for output data (mantissa) */
+    int outputGainScale            /*!< New gain for output data (exponent) */
+);
+void qmfSynPrototypeFirSlot(
+    HANDLE_QMF_FILTER_BANK qmf,
+    FIXP_DBL *RESTRICT realSlot, /*!< Input: Pointer to real Slot */
+    FIXP_DBL *RESTRICT imagSlot, /*!< Input: Pointer to imag Slot */
+    INT_PCM *RESTRICT timeOut,   /*!< Time domain data */
+    const int timeOut_e);
+
+#endif /*ifndef QMF_H       */