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, 568 insertions, 0 deletions

diff --git a/libSACenc/src/sacenc_framewindowing.cpp b/libSACenc/src/sacenc_framewindowing.cpp
new file mode 100644
index 0000000..15f0f0a
--- /dev/null
+++ b/libSACenc/src/sacenc_framewindowing.cpp
@@ -0,0 +1,568 @@
+/* -----------------------------------------------------------------------------
+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
+----------------------------------------------------------------------------- */
+
+/*********************** MPEG surround encoder library *************************
+
+   Author(s):   Max Neuendorf
+
+   Description: Encoder Library Interface
+                Get windows for framing
+
+*******************************************************************************/
+
+/**************************************************************************/ /**
+   \file
+   Description of file contents
+ ******************************************************************************/
+
+/* Includes ******************************************************************/
+#include "sacenc_framewindowing.h"
+#include "sacenc_vectorfunctions.h"
+
+/* Defines *******************************************************************/
+
+/* Data Types ****************************************************************/
+typedef struct T_FRAMEWINDOW {
+  INT nTimeSlotsMax;
+  INT bFrameKeep;
+  INT startSlope;
+  INT stopSlope;
+  INT startRect;
+  INT stopRect;
+
+  INT taperAnaLen;
+  INT taperSynLen;
+  FIXP_WIN pTaperAna__FDK[MAX_TIME_SLOTS];
+  FIXP_WIN pTaperSyn__FDK[MAX_TIME_SLOTS];
+
+} FRAMEWINDOW;
+
+typedef enum {
+  FIX_INVALID = -1,
+  FIX_RECT_SMOOTH = 0,
+  FIX_SMOOTH_RECT = 1,
+  FIX_LARGE_SMOOTH = 2,
+  FIX_RECT_TRIANG = 3
+
+} FIX_TYPE;
+
+typedef enum {
+  VAR_INVALID = -1,
+  VAR_HOLD = 0,
+  VAR_ISOLATE = 1
+
+} VAR_TYPE;
+
+/* Constants *****************************************************************/
+
+/* Function / Class Declarations *********************************************/
+
+/* Function / Class Definition ***********************************************/
+static void calcTaperWin(FIXP_WIN *pTaperWin, INT timeSlots) {
+  FIXP_DBL x;
+  int i, scale;
+
+  for (i = 0; i < timeSlots; i++) {
+    x = fDivNormHighPrec((FIXP_DBL)i, (FIXP_DBL)timeSlots, &scale);
+
+    if (scale < 0) {
+      pTaperWin[i] = FX_DBL2FX_WIN(x >> (-scale));
+    } else {
+      pTaperWin[i] = FX_DBL2FX_WIN(x << (scale));
+    }
+  }
+  pTaperWin[timeSlots] = FX_DBL2FX_WIN((FIXP_DBL)MAXVAL_DBL);
+}
+
+FDK_SACENC_ERROR fdk_sacenc_frameWindow_Create(
+    HANDLE_FRAMEWINDOW *phFrameWindow) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if (NULL == phFrameWindow) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    /* Memory Allocation */
+    FDK_ALLOCATE_MEMORY_1D(*phFrameWindow, 1, FRAMEWINDOW);
+  }
+  return error;
+
+bail:
+  fdk_sacenc_frameWindow_Destroy(phFrameWindow);
+  return ((SACENC_OK == error) ? SACENC_MEMORY_ERROR : error);
+}
+
+FDK_SACENC_ERROR fdk_sacenc_frameWindow_Init(
+    HANDLE_FRAMEWINDOW hFrameWindow,
+    const FRAMEWINDOW_CONFIG *const pFrameWindowConfig) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if ((hFrameWindow == NULL) || (pFrameWindowConfig == NULL)) {
+    error = SACENC_INVALID_HANDLE;
+  } else if (pFrameWindowConfig->nTimeSlotsMax < 0) {
+    error = SACENC_INIT_ERROR;
+  } else {
+    int ts;
+    hFrameWindow->bFrameKeep = pFrameWindowConfig->bFrameKeep;
+    hFrameWindow->nTimeSlotsMax = pFrameWindowConfig->nTimeSlotsMax;
+
+    FIXP_WIN winMaxVal = FX_DBL2FX_WIN((FIXP_DBL)MAXVAL_DBL);
+    int timeSlots = pFrameWindowConfig->nTimeSlotsMax;
+    {
+      hFrameWindow->startSlope = 0;
+      hFrameWindow->stopSlope = ((3 * timeSlots) >> 1) - 1;
+      hFrameWindow->startRect = timeSlots >> 1;
+      hFrameWindow->stopRect = timeSlots;
+      calcTaperWin(hFrameWindow->pTaperSyn__FDK, timeSlots >> 1);
+      hFrameWindow->taperSynLen = timeSlots >> 1;
+    }
+
+    /* Calculate Taper for non-rect. ana. windows */
+    hFrameWindow->taperAnaLen =
+        hFrameWindow->startRect - hFrameWindow->startSlope;
+    for (ts = 0; ts < hFrameWindow->taperAnaLen; ts++) {
+      { hFrameWindow->pTaperAna__FDK[ts] = winMaxVal; }
+    }
+  }
+
+  return error;
+}
+
+FDK_SACENC_ERROR fdk_sacenc_frameWindow_Destroy(
+    HANDLE_FRAMEWINDOW *phFrameWindow) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if ((NULL != phFrameWindow) && (NULL != *phFrameWindow)) {
+    FDKfree(*phFrameWindow);
+    *phFrameWindow = NULL;
+  }
+  return error;
+}
+
+static FDK_SACENC_ERROR FrameWinList_Reset(FRAMEWIN_LIST *const pFrameWinList) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if (NULL == pFrameWinList) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    int k = 0;
+    for (k = 0; k < MAX_NUM_PARAMS; k++) {
+      pFrameWinList->dat[k].slot = -1;
+      pFrameWinList->dat[k].hold = FW_INTP;
+    }
+    pFrameWinList->n = 0;
+  }
+  return error;
+}
+
+static FDK_SACENC_ERROR FrameWindowList_Add(FRAMEWIN_LIST *const pFrameWinList,
+                                            const INT slot,
+                                            const FW_SLOTTYPE hold) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if (NULL == pFrameWinList) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    if (pFrameWinList->n >= MAX_NUM_PARAMS) { /* Place left in List ?*/
+      error = SACENC_PARAM_ERROR;
+    } else if (pFrameWinList->n > 0 &&
+               pFrameWinList->dat[pFrameWinList->n - 1].slot - slot > 0) {
+      error = SACENC_PARAM_ERROR;
+    } else {
+      pFrameWinList->dat[pFrameWinList->n].slot = slot;
+      pFrameWinList->dat[pFrameWinList->n].hold = hold;
+      pFrameWinList->n++;
+    }
+  }
+  return error;
+}
+
+static FDK_SACENC_ERROR FrameWindowList_Remove(
+    FRAMEWIN_LIST *const pFrameWinList, const INT idx) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if (NULL == pFrameWinList) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    int k = 0;
+    if (idx < 0 || idx >= MAX_NUM_PARAMS) {
+      error = SACENC_PARAM_ERROR;
+    } else if (pFrameWinList->n > 0) {
+      if (idx == MAX_NUM_PARAMS - 1) {
+        pFrameWinList->dat[idx].slot = -1;
+        pFrameWinList->dat[idx].hold = FW_INTP;
+      } else {
+        for (k = idx; k < MAX_NUM_PARAMS - 1; k++) {
+          pFrameWinList->dat[k] = pFrameWinList->dat[k + 1];
+        }
+      }
+      pFrameWinList->n--;
+    }
+  }
+  return error;
+}
+
+static FDK_SACENC_ERROR FrameWindowList_Limit(
+    FRAMEWIN_LIST *const pFrameWinList, const INT ll /*lower limit*/,
+    const INT ul /*upper limit*/
+) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if (NULL == pFrameWinList) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    int k = 0;
+    for (k = 0; k < pFrameWinList->n; k++) {
+      if (pFrameWinList->dat[k].slot < ll || pFrameWinList->dat[k].slot > ul) {
+        FrameWindowList_Remove(pFrameWinList, k);
+        --k;
+      }
+    }
+  }
+  return error;
+}
+
+FDK_SACENC_ERROR fdk_sacenc_frameWindow_GetWindow(
+    HANDLE_FRAMEWINDOW hFrameWindow, INT tr_pos[MAX_NUM_PARAMS],
+    const INT timeSlots, FRAMINGINFO *const pFramingInfo,
+    FIXP_WIN *pWindowAna__FDK[MAX_NUM_PARAMS],
+    FRAMEWIN_LIST *const pFrameWinList, const INT avoid_keep) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if ((hFrameWindow == NULL) || (tr_pos == NULL) || (pFramingInfo == NULL) ||
+      (pFrameWinList == NULL) || (pWindowAna__FDK == NULL)) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    const VAR_TYPE varType = VAR_HOLD;
+    const int tranL = 4;
+    int winCnt = 0;
+    int w, ps;
+
+    int startSlope = hFrameWindow->startSlope;
+    int stopSlope = hFrameWindow->stopSlope;
+    int startRect = hFrameWindow->startRect;
+    int stopRect = hFrameWindow->stopRect;
+    int taperAnaLen = hFrameWindow->taperAnaLen;
+
+    FIXP_WIN winMaxVal = FX_DBL2FX_WIN((FIXP_DBL)MAXVAL_DBL);
+    FIXP_WIN applyRightWindowGain__FDK[MAX_NUM_PARAMS];
+    FIXP_WIN *pTaperAna__FDK = hFrameWindow->pTaperAna__FDK;
+
+    /* sanity check */
+    for (ps = 0; ps < MAX_NUM_PARAMS; ps++) {
+      if (pWindowAna__FDK[ps] == NULL) {
+        error = SACENC_INVALID_HANDLE;
+        goto bail;
+      }
+    }
+
+    if ((timeSlots > hFrameWindow->nTimeSlotsMax) || (timeSlots < 0)) {
+      error = SACENC_INVALID_CONFIG;
+      goto bail;
+    }
+
+    /* Reset */
+    if (SACENC_OK != (error = FrameWinList_Reset(pFrameWinList))) goto bail;
+
+    FDKmemclear(applyRightWindowGain__FDK, sizeof(applyRightWindowGain__FDK));
+
+    if (tr_pos[0] > -1) { /* Transients in first (left) half? */
+      int p_l = tr_pos[0];
+      winCnt = 0;
+
+      /* Create Parameter Positions */
+      switch (varType) {
+        case VAR_HOLD:
+          if (SACENC_OK !=
+              (error = FrameWindowList_Add(pFrameWinList, p_l - 1, FW_HOLD)))
+            goto bail;
+          if (SACENC_OK !=
+              (error = FrameWindowList_Add(pFrameWinList, p_l, FW_INTP)))
+            goto bail;
+          break;
+        case VAR_ISOLATE:
+          if (SACENC_OK !=
+              (error = FrameWindowList_Add(pFrameWinList, p_l - 1, FW_HOLD)))
+            goto bail;
+          if (SACENC_OK !=
+              (error = FrameWindowList_Add(pFrameWinList, p_l, FW_INTP)))
+            goto bail;
+          if (SACENC_OK != (error = FrameWindowList_Add(pFrameWinList,
+                                                        p_l + tranL, FW_HOLD)))
+            goto bail;
+          if (SACENC_OK != (error = FrameWindowList_Add(
+                                pFrameWinList, p_l + tranL + 1, FW_INTP)))
+            goto bail;
+          break;
+        default:
+          error = SACENC_INVALID_CONFIG;
+          break;
+      }
+
+      /* Outside of frame? => Kick Out */
+      if (SACENC_OK !=
+          (error = FrameWindowList_Limit(pFrameWinList, 0, timeSlots - 1)))
+        goto bail;
+
+      /* Add timeSlots as temporary border for window creation */
+      if (SACENC_OK !=
+          (error = FrameWindowList_Add(pFrameWinList, timeSlots - 1, FW_HOLD)))
+        goto bail;
+
+      /* Create Windows */
+      for (ps = 0; ps < pFrameWinList->n - 1; ps++) {
+        if (FW_HOLD != pFrameWinList->dat[ps].hold) {
+          int const start = pFrameWinList->dat[ps].slot;
+          int const stop = pFrameWinList->dat[ps + 1].slot;
+
+          /* Analysis Window */
+          FDKmemset_flex(pWindowAna__FDK[winCnt], FX_DBL2FX_WIN((FIXP_DBL)0),
+                         start);
+          FDKmemset_flex(&pWindowAna__FDK[winCnt][start], winMaxVal,
+                         stop - start + 1);
+          FDKmemset_flex(&pWindowAna__FDK[winCnt][stop + 1],
+                         FX_DBL2FX_WIN((FIXP_DBL)0), timeSlots - stop - 1);
+
+          applyRightWindowGain__FDK[winCnt] =
+              pWindowAna__FDK[winCnt][timeSlots - 1];
+          winCnt++;
+        }
+      } /* ps */
+
+      /* Pop temporary frame border */
+      if (SACENC_OK !=
+          (error = FrameWindowList_Remove(pFrameWinList, pFrameWinList->n - 1)))
+        goto bail;
+    } else { /* No transient in left half of ana. window */
+      winCnt = 0;
+
+      /* Add paramter set at end of frame */
+      if (SACENC_OK !=
+          (error = FrameWindowList_Add(pFrameWinList, timeSlots - 1, FW_INTP)))
+        goto bail;
+      /* Analysis Window */
+      FDKmemset_flex(pWindowAna__FDK[winCnt], FX_DBL2FX_WIN((FIXP_DBL)0),
+                     startSlope);
+      FDKmemcpy_flex(&pWindowAna__FDK[winCnt][startSlope], 1, pTaperAna__FDK, 1,
+                     taperAnaLen);
+      FDKmemset_flex(&pWindowAna__FDK[winCnt][startRect], winMaxVal,
+                     timeSlots - startRect);
+
+      applyRightWindowGain__FDK[winCnt] = winMaxVal;
+      winCnt++;
+    } /* if (tr_pos[0] > -1) */
+
+    for (w = 0; w < winCnt; w++) {
+      if (applyRightWindowGain__FDK[w] > (FIXP_WIN)0) {
+        if (tr_pos[1] > -1) { /* Transients in second (right) half? */
+          int p_r = tr_pos[1];
+
+          /* Analysis Window */
+          FDKmemset_flex(&pWindowAna__FDK[w][timeSlots], winMaxVal,
+                         p_r - timeSlots);
+          FDKmemset_flex(&pWindowAna__FDK[w][p_r], FX_DBL2FX_WIN((FIXP_DBL)0),
+                         2 * timeSlots - p_r);
+
+        } else { /* No transient in right half of ana. window */
+          /* Analysis Window */
+          FDKmemset_flex(&pWindowAna__FDK[w][timeSlots], winMaxVal,
+                         stopRect - timeSlots + 1);
+          FDKmemcpy_flex(&pWindowAna__FDK[w][stopRect], 1,
+                         &pTaperAna__FDK[taperAnaLen - 1], -1, taperAnaLen);
+          FDKmemset_flex(&pWindowAna__FDK[w][stopSlope + 1],
+                         FX_DBL2FX_WIN((FIXP_DBL)0),
+                         2 * timeSlots - stopSlope - 1);
+
+        } /* if (tr_pos[1] > -1) */
+
+        /* Weight */
+        if (applyRightWindowGain__FDK[w] < winMaxVal) {
+          int ts;
+          for (ts = 0; ts < timeSlots; ts++) {
+            pWindowAna__FDK[w][timeSlots + ts] =
+                FX_DBL2FX_WIN(fMult(pWindowAna__FDK[w][timeSlots + ts],
+                                    applyRightWindowGain__FDK[w]));
+          }
+        }
+      } /* if (applyRightWindowGain[w] > 0.0f) */
+      else {
+        /* All Zero */
+        FDKmemset_flex(&pWindowAna__FDK[w][timeSlots],
+                       FX_DBL2FX_WIN((FIXP_DBL)0), timeSlots);
+      }
+    } /* loop over windows */
+
+    if (hFrameWindow->bFrameKeep == 1) {
+      FDKmemcpy_flex(&pWindowAna__FDK[0][2 * timeSlots], 1,
+                     &pWindowAna__FDK[0][timeSlots], 1, timeSlots);
+      FDKmemcpy_flex(&pWindowAna__FDK[0][timeSlots], 1, pWindowAna__FDK[0], 1,
+                     timeSlots);
+
+      if (avoid_keep != 0) {
+        FDKmemset_flex(pWindowAna__FDK[0], FX_DBL2FX_WIN((FIXP_DBL)0),
+                       timeSlots);
+      } else {
+        FDKmemset_flex(pWindowAna__FDK[0], winMaxVal, timeSlots);
+      }
+    } /* if (hFrameWindow->bFrameKeep==1) */
+
+    /* Feed Info to Bitstream Formatter */
+    pFramingInfo->numParamSets = pFrameWinList->n;
+    pFramingInfo->bsFramingType = 1; /* variable framing */
+    for (ps = 0; ps < pFramingInfo->numParamSets; ps++) {
+      pFramingInfo->bsParamSlots[ps] = pFrameWinList->dat[ps].slot;
+    }
+
+    /* if there is just one param set at last slot,
+       use fixed framing to save some bits */
+    if ((pFramingInfo->numParamSets == 1) &&
+        (pFramingInfo->bsParamSlots[0] == timeSlots - 1)) {
+      pFramingInfo->bsFramingType = 0;
+    }
+
+  } /* valid handle */
+
+bail:
+
+  return error;
+}
+
+FDK_SACENC_ERROR fdk_sacenc_analysisWindowing(
+    const INT nTimeSlots, const INT startTimeSlot,
+    FIXP_WIN *pFrameWindowAna__FDK, const FIXP_DPK *const *const ppDataIn__FDK,
+    FIXP_DPK *const *const ppDataOut__FDK, const INT nHybridBands,
+    const INT dim) {
+  FDK_SACENC_ERROR error = SACENC_OK;
+
+  if ((pFrameWindowAna__FDK == NULL) || (ppDataIn__FDK == NULL) ||
+      (ppDataOut__FDK == NULL)) {
+    error = SACENC_INVALID_HANDLE;
+  } else {
+    int i, ts;
+    FIXP_WIN maxVal = FX_DBL2FX_WIN((FIXP_DBL)MAXVAL_DBL);
+
+    if (dim == FW_CHANGE_DIM) {
+      for (ts = startTimeSlot; ts < nTimeSlots; ts++) {
+        FIXP_WIN win = pFrameWindowAna__FDK[ts];
+        if (win == maxVal) {
+          for (i = 0; i < nHybridBands; i++) {
+            ppDataOut__FDK[i][ts].v.re = ppDataIn__FDK[ts][i].v.re;
+            ppDataOut__FDK[i][ts].v.im = ppDataIn__FDK[ts][i].v.im;
+          }
+        } else {
+          for (i = 0; i < nHybridBands; i++) {
+            ppDataOut__FDK[i][ts].v.re = fMult(win, ppDataIn__FDK[ts][i].v.re);
+            ppDataOut__FDK[i][ts].v.im = fMult(win, ppDataIn__FDK[ts][i].v.im);
+          }
+        }
+      } /* ts */
+    } else {
+      for (ts = startTimeSlot; ts < nTimeSlots; ts++) {
+        FIXP_WIN win = pFrameWindowAna__FDK[ts];
+        if (win == maxVal) {
+          for (i = 0; i < nHybridBands; i++) {
+            ppDataOut__FDK[ts][i].v.re = ppDataIn__FDK[ts][i].v.re;
+            ppDataOut__FDK[ts][i].v.im = ppDataIn__FDK[ts][i].v.im;
+          }
+        } else {
+          for (i = 0; i < nHybridBands; i++) {
+            ppDataOut__FDK[ts][i].v.re = fMult(win, ppDataIn__FDK[ts][i].v.re);
+            ppDataOut__FDK[ts][i].v.im = fMult(win, ppDataIn__FDK[ts][i].v.im);
+          }
+        }
+      } /* ts */
+    }
+  }
+
+  return error;
+}