Encoder 7.1 support

* AAC-Encoder

   - Add 7.1 rear surround and 7.1 front center support to supported encoder
     channel modes. Change max channels from 6 to 8 and add 7.1 configuration
     to bandwidth and channel mapping functions.
     Modified file(s):
        libAACenc\include\aacenc_lib.h
        libAACenc\src\aacEnc_ram.cpp
        libAACenc\src\aacEnc_ram.h
        libAACenc\src\aacenc.cpp
        libAACenc\src\aacenc.h
        libAACenc\src\aacenc_lib.cpp
        libAACenc\src\adj_thr.cpp
        libAACenc\src\adj_thr.h
        libAACenc\src\adj_thr_data.h
        libAACenc\src\bandwidth.cpp
        libAACenc\src\bitenc.cpp
        libAACenc\src\channel_map.cpp
        libAACenc\src\interface.h
        libAACenc\src\metadata_compressor.cpp
        libAACenc\src\psy_main.cpp
        libAACenc\src\psy_main.h
        libAACenc\src\qc_data.h
        libAACenc\src\qc_main.cpp
        libAACenc\src\qc_main.h

* SBR-Encoder

   - Support up to 7.1 audio channels. Changed max channels from 6 to 8.
     Modified file(s):
        libSBRenc\include\sbr_encoder.h
        libSBRenc\src\sbr.h
        libSBRenc\src\sbr_encoder.cpp
        libSBRenc\src\sbr_ram.cpp

* Transport-Encoder
   - Add 7.1 channel configuration to audio specific config writer in
     transport encoder library.
     Modified file(s):
        libMpegTPEnc\src\tpenc_asc.cpp
        libMpegTPEnc\src\version

* SYS-Library
   - Add 7.1 channel modes to CHANNEL_MODE description.
     Modified file(s):
        libSYS\include\FDK_audio.h
        libSYS\src\genericStds.cpp

Bug 9428126

Change-Id: Ide53583aa8e03df4537b98db80740dfe0e7a9e0f

19 files changed, 166 insertions, 136 deletions

diff --git a/libAACenc/include/aacenc_lib.h b/libAACenc/include/aacenc_lib.h
index f693bf5..8c0e1cd 100644
--- a/libAACenc/include/aacenc_lib.h
+++ b/libAACenc/include/aacenc_lib.h
@@ -377,16 +377,20 @@ For user defined Configurations the Channel Configuration is set to 0 and the Ch
 Program Config Element. The present Encoder implementation does not allow the user to configure this Channel Configuration from
 extern. The Encoder implementation supports fixed Channel Modes which are mapped to Channel Configuration as follow.
 \verbatim
---------------------------------------------------------------------
- ChannelMode     | ChCfg  | front_El | side_El  | back_El  | lfe_El
------------------+--------+----------+----------+----------+--------
-MODE_1           |      1 | SCE      |          |          |
-MODE_2           |      2 | CPE      |          |          |
-MODE_1_2         |      3 | SCE, CPE |          |          |
-MODE_1_2_1       |      4 | SCE, CPE |          | SCE      |
-MODE_1_2_2       |      5 | SCE, CPE |          | CPE      |
-MODE_1_2_2_1     |      6 | SCE, CPE |          | CPE      | LFE
---------------------------------------------------------------------
+-------------------------------------------------------------------------------
+ ChannelMode           | ChCfg  | front_El      | side_El  | back_El  | lfe_El
+-----------------------+--------+---------------+----------+----------+--------
+MODE_1                 |      1 | SCE           |          |          |
+MODE_2                 |      2 | CPE           |          |          |
+MODE_1_2               |      3 | SCE, CPE      |          |          |
+MODE_1_2_1             |      4 | SCE, CPE      |          | SCE      |
+MODE_1_2_2             |      5 | SCE, CPE      |          | CPE      |
+MODE_1_2_2_1           |      6 | SCE, CPE      |          | CPE      | LFE
+MODE_1_2_2_2_1         |      7 | SCE, CPE, CPE |          | CPE      | LFE
+-----------------------+--------+---------------+----------+----------+--------
+MODE_7_1_REAR_SURROUND |      0 | SCE, CPE      |          | CPE, CPE | LFE
+MODE_7_1_FRONT_CENTER  |      0 | SCE, CPE, CPE |          | CPE      | LFE
+-------------------------------------------------------------------------------
  - SCE: Single Channel Element.
  - CPE: Channel Pair.
  - SCE: Low Frequency Element.
@@ -402,16 +406,20 @@ Beside the Channel Element assignment the Channel Modes are resposible for audio
 of the audio data depends on the selected ::AACENC_CHANNELORDER which can be MPEG or WAV like order.\n
 Following Table describes the complete channel mapping for both Channel Order configurations.
 \verbatim
----------------------------------------------------------------------------------
-ChannelMode      |  MPEG-Channelorder            |  WAV-Channelorder
------------------+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---
-MODE_1           | 0 |   |   |   |   |   |   |   | 0 |   |   |   |   |   |   |
-MODE_2           | 0 | 1 |   |   |   |   |   |   | 0 | 1 |   |   |   |   |   |
-MODE_1_2         | 0 | 1 | 2 |   |   |   |   |   | 2 | 0 | 1 |   |   |   |   |
-MODE_1_2_1       | 0 | 1 | 2 | 3 |   |   |   |   | 2 | 0 | 1 | 3 |   |   |   |
-MODE_1_2_2       | 0 | 1 | 2 | 3 | 4 |   |   |   | 2 | 0 | 1 | 3 | 4 |   |   |
-MODE_1_2_2_1     | 0 | 1 | 2 | 3 | 4 | 5 |   |   | 2 | 0 | 1 | 4 | 5 | 3 |   |
----------------------------------------------------------------------------------
+---------------------------------------------------------------------------------------
+ChannelMode            |  MPEG-Channelorder            |  WAV-Channelorder
+-----------------------+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---
+MODE_1                 | 0 |   |   |   |   |   |   |   | 0 |   |   |   |   |   |   |
+MODE_2                 | 0 | 1 |   |   |   |   |   |   | 0 | 1 |   |   |   |   |   |
+MODE_1_2               | 0 | 1 | 2 |   |   |   |   |   | 2 | 0 | 1 |   |   |   |   |
+MODE_1_2_1             | 0 | 1 | 2 | 3 |   |   |   |   | 2 | 0 | 1 | 3 |   |   |   |
+MODE_1_2_2             | 0 | 1 | 2 | 3 | 4 |   |   |   | 2 | 0 | 1 | 3 | 4 |   |   |
+MODE_1_2_2_1           | 0 | 1 | 2 | 3 | 4 | 5 |   |   | 2 | 0 | 1 | 4 | 5 | 3 |   |
+MODE_1_2_2_2_1         | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 2 | 6 | 7 | 0 | 1 | 4 | 5 | 3
+-----------------------+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---
+MODE_7_1_REAR_SURROUND | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 2 | 0 | 1 | 6 | 7 | 4 | 5 | 3
+MODE_7_1_FRONT_CENTER  | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 2 | 6 | 7 | 0 | 1 | 4 | 5 | 3
+---------------------------------------------------------------------------------------
 \endverbatim
 
 The denoted mapping is important for correct audio channel assignment when using MPEG or WAV ordering. The incoming audio
@@ -920,7 +928,7 @@ typedef enum
                                                   - 480: Optional length in LD/ELD configuration. */
 
   AACENC_CHANNELMODE              = 0x0106,  /*!< Set explicit channel mode. Channel mode must match with number of input channels.
-                                                  - 1-6: MPEG channel modes supported, see ::CHANNEL_MODE in FDK_audio.h. */
+                                                  - 1-7 and 33,34: MPEG channel modes supported, see ::CHANNEL_MODE in FDK_audio.h. */
 
   AACENC_CHANNELORDER             = 0x0107,  /*!< Input audio data channel ordering scheme:
                                                   - 0: MPEG channel ordering (e. g. 5.1: C, L, R, SL, SR, LFE). (default)
diff --git a/libAACenc/src/aacEnc_ram.cpp b/libAACenc/src/aacEnc_ram.cpp
index 1844331..be3eea2 100644
--- a/libAACenc/src/aacEnc_ram.cpp
+++ b/libAACenc/src/aacEnc_ram.cpp
@@ -119,12 +119,12 @@ C_ALLOC_MEM (Ram_aacEnc_AacEncoder,           AAC_ENC,          1)
      PsyInputBuffer.
 */
 
-C_ALLOC_MEM2 (Ram_aacEnc_PsyElement, PSY_ELEMENT, 1, (6))
+C_ALLOC_MEM2 (Ram_aacEnc_PsyElement, PSY_ELEMENT, 1, (8))
 
 C_ALLOC_MEM  (Ram_aacEnc_PsyInternal, PSY_INTERNAL, 1)
-C_ALLOC_MEM2 (Ram_aacEnc_PsyStatic,   PSY_STATIC,   1, (6))
+C_ALLOC_MEM2 (Ram_aacEnc_PsyStatic,   PSY_STATIC,   1, (8))
 
-C_ALLOC_MEM2 (Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (6))
+C_ALLOC_MEM2 (Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (8))
 
   PSY_DYNAMIC *GetRam_aacEnc_PsyDynamic (int n, UCHAR* dynamic_RAM) {
       FDK_ASSERT(dynamic_RAM!=0);
@@ -139,8 +139,8 @@ C_ALLOC_MEM2 (Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (6))
 */
 C_ALLOC_MEM2 (Ram_aacEnc_PsyOut,         PSY_OUT, 1, (1))
 
-C_ALLOC_MEM2 (Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT, 1, (1)*(6))
-C_ALLOC_MEM2 (Ram_aacEnc_PsyOutChannel,  PSY_OUT_CHANNEL, 1, (1)*(6))
+C_ALLOC_MEM2 (Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT, 1, (1)*(8))
+C_ALLOC_MEM2 (Ram_aacEnc_PsyOutChannel,  PSY_OUT_CHANNEL, 1, (1)*(8))
 
 
 /*
@@ -155,8 +155,8 @@ C_ALLOC_MEM2 (Ram_aacEnc_PsyOutChannel,  PSY_OUT_CHANNEL, 1, (1)*(6))
 C_ALLOC_MEM (Ram_aacEnc_QCstate, QC_STATE, 1)
 C_ALLOC_MEM (Ram_aacEnc_AdjustThreshold, ADJ_THR_STATE, 1)
 
-C_ALLOC_MEM2 (Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT, 1, (6))
-C_ALLOC_MEM2 (Ram_aacEnc_ElementBits, ELEMENT_BITS, 1, (6))
+C_ALLOC_MEM2 (Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT, 1, (8))
+C_ALLOC_MEM2 (Ram_aacEnc_ElementBits, ELEMENT_BITS, 1, (8))
 C_ALLOC_MEM (Ram_aacEnc_BitCntrState, BITCNTR_STATE, 1)
 
   INT *GetRam_aacEnc_BitLookUp(int n, UCHAR* dynamic_RAM) {
@@ -175,7 +175,7 @@ C_ALLOC_MEM (Ram_aacEnc_BitCntrState, BITCNTR_STATE, 1)
 */
 
 C_ALLOC_MEM2 (Ram_aacEnc_QCout, QC_OUT, 1, (1))
-C_ALLOC_MEM2 (Ram_aacEnc_QCelement, QC_OUT_ELEMENT, (1), (6))
+C_ALLOC_MEM2 (Ram_aacEnc_QCelement, QC_OUT_ELEMENT, (1), (8))
   QC_OUT_CHANNEL *GetRam_aacEnc_QCchannel (int n, UCHAR* dynamic_RAM) {
       FDK_ASSERT(dynamic_RAM!=0);
       return ((QC_OUT_CHANNEL*) (dynamic_RAM + P_BUF_0 + n*sizeof(QC_OUT_CHANNEL)));
diff --git a/libAACenc/src/aacEnc_ram.h b/libAACenc/src/aacEnc_ram.h
index d2cad60..cf7da7c 100644
--- a/libAACenc/src/aacEnc_ram.h
+++ b/libAACenc/src/aacEnc_ram.h
@@ -118,7 +118,7 @@ amm-info@iis.fraunhofer.de
 */
 
 /* define hBitstream size: max AAC framelength is 6144 bits/channel */
-/*#define BUFFER_BITSTR_SIZE ((6400*(6)/bbWordSize)    +((bbWordSize - 1) / bbWordSize))*/
+/*#define BUFFER_BITSTR_SIZE ((6400*(8)/bbWordSize)    +((bbWordSize - 1) / bbWordSize))*/
 
 struct AAC_ENC {
 
@@ -173,7 +173,7 @@ struct AAC_ENC {
  ++++++++++++++++++++++++++++++++++++++++++++
 */
 
-#define BUF_SIZE_0       ( ALIGN_SIZE(sizeof(QC_OUT_CHANNEL)*(6)) )
+#define BUF_SIZE_0       ( ALIGN_SIZE(sizeof(QC_OUT_CHANNEL)*(8)) )
 #define BUF_SIZE_1       ( ALIGN_SIZE(maxSize(sizeof(PSY_DYNAMIC), \
                                       (BIT_LOOK_UP_SIZE+MERGE_GAIN_LOOK_UP_SIZE))) )
 
diff --git a/libAACenc/src/aacenc.cpp b/libAACenc/src/aacenc.cpp
index 6ce7b22..569662b 100644
--- a/libAACenc/src/aacenc.cpp
+++ b/libAACenc/src/aacenc.cpp
@@ -393,7 +393,7 @@ AAC_ENCODER_ERROR FDKaacEnc_Initialize(HANDLE_AAC_ENC      hAacEnc,
   /******************* sanity checks *******************/
 
   /* check config structure */
-  if (config->nChannels  < 1 || config->nChannels > (6)) {
+  if (config->nChannels  < 1 || config->nChannels > (8)) {
     return AAC_ENC_UNSUPPORTED_CHANNELCONFIG;
   }
 
diff --git a/libAACenc/src/aacenc.h b/libAACenc/src/aacenc.h
index f07bc17..87fc3e8 100644
--- a/libAACenc/src/aacenc.h
+++ b/libAACenc/src/aacenc.h
@@ -154,7 +154,7 @@ typedef enum {
 
 #define ANC_DATA_BUFFERSIZE 1024      /* ancBuffer size */
 
-#define MAX_TOTAL_EXT_PAYLOADS  (((6) * (1)) + (2+2))
+#define MAX_TOTAL_EXT_PAYLOADS  (((8) * (1)) + (2+2))
 
 
 typedef enum {
diff --git a/libAACenc/src/aacenc_lib.cpp b/libAACenc/src/aacenc_lib.cpp
index 056958b..49f8225 100644
--- a/libAACenc/src/aacenc_lib.cpp
+++ b/libAACenc/src/aacenc_lib.cpp
@@ -98,7 +98,7 @@ amm-info@iis.fraunhofer.de
 /* Encoder library info */
 #define AACENCODER_LIB_VL0 3
 #define AACENCODER_LIB_VL1 4
-#define AACENCODER_LIB_VL2 11
+#define AACENCODER_LIB_VL2 12
 #define AACENCODER_LIB_TITLE "AAC Encoder"
 #define AACENCODER_LIB_BUILD_DATE __DATE__
 #define AACENCODER_LIB_BUILD_TIME __TIME__
@@ -215,8 +215,8 @@ struct AACENCODER
 
     AACENC_EXT_PAYLOAD       extPayload [MAX_TOTAL_EXT_PAYLOADS];
     /* Extension payload */
-    UCHAR                    extPayloadData [(1)][(6)][MAX_PAYLOAD_SIZE];
-    UINT                     extPayloadSize [(1)][(6)]; /* payload sizes in bits */
+    UCHAR                    extPayloadData [(1)][(8)][MAX_PAYLOAD_SIZE];
+    UINT                     extPayloadSize [(1)][(8)]; /* payload sizes in bits */
 
     ULONG                    InitFlags;         /* internal status to treggier re-initialization */
 
@@ -699,8 +699,8 @@ INT aacEncoder_LimitBitrate(
     /* Find total bitrate which provides valid configuration for each SBR element. */
     do {
       int e;
-      SBR_ELEMENT_INFO sbrElInfo[(6)];
-      FDK_ASSERT(cm.nElements <= (6));
+      SBR_ELEMENT_INFO sbrElInfo[(8)];
+      FDK_ASSERT(cm.nElements <= (8));
 
       initialBitrate = adjustedBitrate;
 
@@ -1061,7 +1061,7 @@ static AACENC_ERROR aacEncInit(HANDLE_AACENCODER  hAacEncoder,
         ((InitFlags & AACENC_INIT_CONFIG) || (InitFlags & AACENC_INIT_STATES)) )
     {
         INT sbrError;
-        SBR_ELEMENT_INFO sbrElInfo[(6)];
+        SBR_ELEMENT_INFO sbrElInfo[(8)];
         CHANNEL_MAPPING channelMapping;
 
         if ( FDKaacEnc_InitChannelMapping(hAacConfig->channelMode,
@@ -1072,7 +1072,7 @@ static AACENC_ERROR aacEncInit(HANDLE_AACENCODER  hAacEncoder,
         }
 
         /* Check return value and if the SBR encoder can handle enough elements */
-        if (channelMapping.nElements > (6)) {
+        if (channelMapping.nElements > (8)) {
             return AACENC_INIT_ERROR;
         }
 
@@ -1249,8 +1249,8 @@ AACENC_ERROR aacEncOpen(
 
     /* Determine max channel configuration. */
     if (maxChannels==0) {
-        hAacEncoder->nMaxAacChannels = (6);
-        hAacEncoder->nMaxSbrChannels = (6);
+        hAacEncoder->nMaxAacChannels = (8);
+        hAacEncoder->nMaxSbrChannels = (8);
     }
     else {
         hAacEncoder->nMaxAacChannels = (maxChannels&0x00FF);
@@ -1258,15 +1258,15 @@ AACENC_ERROR aacEncOpen(
             hAacEncoder->nMaxSbrChannels = (maxChannels&0xFF00) ? (maxChannels>>8) : hAacEncoder->nMaxAacChannels;
         }
 
-        if ( (hAacEncoder->nMaxAacChannels>(6)) || (hAacEncoder->nMaxSbrChannels>(6)) ) {
+        if ( (hAacEncoder->nMaxAacChannels>(8)) || (hAacEncoder->nMaxSbrChannels>(8)) ) {
             err = AACENC_INVALID_CONFIG;
             goto bail;
         }
     } /* maxChannels==0 */
 
     /* Max number of elements could be tuned any more. */
-    hAacEncoder->nMaxAacElements = fixMin((6), hAacEncoder->nMaxAacChannels);
-    hAacEncoder->nMaxSbrElements = fixMin((6), hAacEncoder->nMaxSbrChannels);
+    hAacEncoder->nMaxAacElements = fixMin((8), hAacEncoder->nMaxAacChannels);
+    hAacEncoder->nMaxSbrElements = fixMin((8), hAacEncoder->nMaxSbrChannels);
     hAacEncoder->nMaxSubFrames = (1);
 
 
@@ -1595,7 +1595,7 @@ AACENC_ERROR aacEncEncode(
         }
         else {
             /* Add SBR extension payload */
-            for (i = 0; i < (6); i++) {
+            for (i = 0; i < (8); i++) {
                 if (hAacEncoder->extPayloadSize[nPayload][i] > 0) {
                     hAacEncoder->extPayload[nExtensions].pData    = hAacEncoder->extPayloadData[nPayload][i];
                     {
@@ -1850,7 +1850,7 @@ AACENC_ERROR aacEncoder_SetParam(
             }
             if ( (pConfig->nElements > hAacEncoder->nMaxAacElements)
               || (pConfig->nChannelsEff > hAacEncoder->nMaxAacChannels)
-              || !((value>=1) && (value<=6))
+              || !(((value>=1) && (value<=7))||((value>=33) && (value<=34)))
                 )
             {
                 err = AACENC_INVALID_CONFIG;
diff --git a/libAACenc/src/adj_thr.cpp b/libAACenc/src/adj_thr.cpp
index 0bd5827..6433633 100644
--- a/libAACenc/src/adj_thr.cpp
+++ b/libAACenc/src/adj_thr.cpp
@@ -1137,12 +1137,12 @@ the difference can be distributed among the scale factor bands.
 New thresholds can be derived from this pe-difference
 *****************************************************************************/
 static void FDKaacEnc_correctThresh(CHANNEL_MAPPING* cm,
-                          QC_OUT_ELEMENT*  qcElement[(6)],
-                          PSY_OUT_ELEMENT* psyOutElement[(6)],
-                          UCHAR            ahFlag[(6)][(2)][MAX_GROUPED_SFB],
-                          FIXP_DBL         thrExp[(6)][(2)][MAX_GROUPED_SFB],
-                          const            FIXP_DBL redVal[(6)],
-                          const            SCHAR redValScaling[(6)],
+                          QC_OUT_ELEMENT*  qcElement[(8)],
+                          PSY_OUT_ELEMENT* psyOutElement[(8)],
+                          UCHAR            ahFlag[(8)][(2)][MAX_GROUPED_SFB],
+                          FIXP_DBL         thrExp[(8)][(2)][MAX_GROUPED_SFB],
+                          const            FIXP_DBL redVal[(8)],
+                          const            SCHAR redValScaling[(8)],
                           const            INT deltaPe,
                           const            INT processElements,
                           const            INT elementOffset)
@@ -1153,8 +1153,8 @@ static void FDKaacEnc_correctThresh(CHANNEL_MAPPING* cm,
    PE_CHANNEL_DATA *peChanData;
    FIXP_DBL thrFactorLdData;
    FIXP_DBL sfbEnLdData, sfbThrLdData, sfbThrReducedLdData;
-   FIXP_DBL *sfbPeFactorsLdData[(6)][(2)];
-   FIXP_DBL sfbNActiveLinesLdData[(6)][(2)][MAX_GROUPED_SFB];
+   FIXP_DBL *sfbPeFactorsLdData[(8)][(2)];
+   FIXP_DBL sfbNActiveLinesLdData[(8)][(2)][MAX_GROUPED_SFB];
    INT      normFactorInt;
    FIXP_DBL normFactorLdData;
 
@@ -1308,9 +1308,9 @@ static void FDKaacEnc_correctThresh(CHANNEL_MAPPING* cm,
                   reducing minSnr
 *****************************************************************************/
 void FDKaacEnc_reduceMinSnr(CHANNEL_MAPPING* cm,
-                            QC_OUT_ELEMENT*  qcElement[(6)],
-                            PSY_OUT_ELEMENT* psyOutElement[(6)],
-                            UCHAR            ahFlag[(6)][(2)][MAX_GROUPED_SFB],
+                            QC_OUT_ELEMENT*  qcElement[(8)],
+                            PSY_OUT_ELEMENT* psyOutElement[(8)],
+                            UCHAR            ahFlag[(8)][(2)][MAX_GROUPED_SFB],
                             const            INT desiredPe,
                             INT*             redPeGlobal,
                             const            INT processElements,
@@ -1410,10 +1410,10 @@ bail:
                   bands have to be quantized to zero
 *****************************************************************************/
 static void FDKaacEnc_allowMoreHoles(CHANNEL_MAPPING* cm,
-                           QC_OUT_ELEMENT*  qcElement[(6)],
-                           PSY_OUT_ELEMENT* psyOutElement[(6)],
-                           ATS_ELEMENT*     AdjThrStateElement[(6)],
-                           UCHAR            ahFlag[(6)][(2)][MAX_GROUPED_SFB],
+                           QC_OUT_ELEMENT*  qcElement[(8)],
+                           PSY_OUT_ELEMENT* psyOutElement[(8)],
+                           ATS_ELEMENT*     AdjThrStateElement[(8)],
+                           UCHAR            ahFlag[(8)][(2)][MAX_GROUPED_SFB],
                            const INT        desiredPe,
                            const INT        currentPe,
                            const int        processElements,
@@ -1645,17 +1645,17 @@ functionname: FDKaacEnc_adaptThresholdsToPe
 description:  two guesses for the reduction value and one final correction of the thresholds
 *****************************************************************************/
 static void FDKaacEnc_adaptThresholdsToPe(CHANNEL_MAPPING*  cm,
-                                ATS_ELEMENT*      AdjThrStateElement[(6)],
-                                QC_OUT_ELEMENT*   qcElement[(6)],
-                                PSY_OUT_ELEMENT*  psyOutElement[(6)],
+                                ATS_ELEMENT*      AdjThrStateElement[(8)],
+                                QC_OUT_ELEMENT*   qcElement[(8)],
+                                PSY_OUT_ELEMENT*  psyOutElement[(8)],
                                 const INT         desiredPe,
                                 const INT         processElements,
                                 const INT         elementOffset)
 {
-   FIXP_DBL redValue[(6)];
-   SCHAR    redValScaling[(6)];
-   UCHAR    pAhFlag[(6)][(2)][MAX_GROUPED_SFB];
-   FIXP_DBL pThrExp[(6)][(2)][MAX_GROUPED_SFB];
+   FIXP_DBL redValue[(8)];
+   SCHAR    redValScaling[(8)];
+   UCHAR    pAhFlag[(8)][(2)][MAX_GROUPED_SFB];
+   FIXP_DBL pThrExp[(8)][(2)][MAX_GROUPED_SFB];
    int iter;
 
    INT constPartGlobal, noRedPeGlobal, nActiveLinesGlobal, redPeGlobal;
@@ -2219,7 +2219,7 @@ description:  initialize ADJ_THR_STATE
 void FDKaacEnc_AdjThrInit(
         ADJ_THR_STATE   *hAdjThr,
         const INT       meanPe,
-        ELEMENT_BITS    *elBits[(6)],
+        ELEMENT_BITS    *elBits[(8)],
         INT             invQuant,
         INT             nElements,
         INT             nChannelsEff,
@@ -2540,10 +2540,10 @@ void FDKaacEnc_DistributeBits(ADJ_THR_STATE *adjThrState,
 functionname: FDKaacEnc_AdjustThresholds
 description:  adjust thresholds
 *****************************************************************************/
-void FDKaacEnc_AdjustThresholds(ATS_ELEMENT*        AdjThrStateElement[(6)],
-                                QC_OUT_ELEMENT*     qcElement[(6)],
+void FDKaacEnc_AdjustThresholds(ATS_ELEMENT*        AdjThrStateElement[(8)],
+                                QC_OUT_ELEMENT*     qcElement[(8)],
                                 QC_OUT*             qcOut,
-                                PSY_OUT_ELEMENT*    psyOutElement[(6)],
+                                PSY_OUT_ELEMENT*    psyOutElement[(8)],
                                 INT                 CBRbitrateMode,
                                 CHANNEL_MAPPING*    cm)
 {
@@ -2620,7 +2620,7 @@ void FDKaacEnc_AdjThrClose(ADJ_THR_STATE** phAdjThr)
     ADJ_THR_STATE* hAdjThr = *phAdjThr;
 
     if (hAdjThr!=NULL) {
-      for (i=0; i<(6); i++) {
+      for (i=0; i<(8); i++) {
         if (hAdjThr->adjThrStateElem[i]!=NULL) {
           FreeRam_aacEnc_AdjThrStateElement(&hAdjThr->adjThrStateElem[i]);
         }
diff --git a/libAACenc/src/adj_thr.h b/libAACenc/src/adj_thr.h
index a429dff..69b1dcc 100644
--- a/libAACenc/src/adj_thr.h
+++ b/libAACenc/src/adj_thr.h
@@ -112,7 +112,7 @@ INT  FDKaacEnc_AdjThrNew(ADJ_THR_STATE** phAdjThr,
 
 void FDKaacEnc_AdjThrInit(ADJ_THR_STATE *hAdjThr,
                 const INT peMean,
-                ELEMENT_BITS* elBits[(6)],
+                ELEMENT_BITS* elBits[(8)],
                 INT invQuant,
                 INT nElements,
                 INT nChannelsEff,
@@ -135,10 +135,10 @@ void FDKaacEnc_DistributeBits(ADJ_THR_STATE *adjThrState,
     const FIXP_DBL    maxBitFac,
     const INT         bitDistributionMode);
 
-void FDKaacEnc_AdjustThresholds(ATS_ELEMENT* AdjThrStateElement[(6)],
-    QC_OUT_ELEMENT*   qcElement[(6)],
+void FDKaacEnc_AdjustThresholds(ATS_ELEMENT* AdjThrStateElement[(8)],
+    QC_OUT_ELEMENT*   qcElement[(8)],
     QC_OUT*           qcOut,
-    PSY_OUT_ELEMENT*  psyOutElement[(6)],
+    PSY_OUT_ELEMENT*  psyOutElement[(8)],
     INT               CBRbitrateMode,
     CHANNEL_MAPPING*  cm);
 
diff --git a/libAACenc/src/adj_thr_data.h b/libAACenc/src/adj_thr_data.h
index 675393e..3eb7678 100644
--- a/libAACenc/src/adj_thr_data.h
+++ b/libAACenc/src/adj_thr_data.h
@@ -144,7 +144,7 @@ typedef struct {
 
 typedef struct {
   BRES_PARAM bresParamLong, bresParamShort;
-  ATS_ELEMENT* adjThrStateElem[(6)];
+  ATS_ELEMENT* adjThrStateElem[(8)];
 } ADJ_THR_STATE;
 
 #endif
diff --git a/libAACenc/src/bandwidth.cpp b/libAACenc/src/bandwidth.cpp
index da9b850..6fc7d87 100644
--- a/libAACenc/src/bandwidth.cpp
+++ b/libAACenc/src/bandwidth.cpp
@@ -316,6 +316,8 @@ AAC_ENCODER_ERROR FDKaacEnc_DetermineBandWidth(INT* bandWidth,
       case MODE_1_2_2:
       case MODE_1_2_2_1:
       case MODE_1_2_2_2_1:
+      case MODE_7_1_REAR_SURROUND:
+      case MODE_7_1_FRONT_CENTER:
         *bandWidth = bandWidthTableVBR[bitrateMode].bandWidth2AndMoreChan;
         break;
       default:
@@ -346,6 +348,8 @@ AAC_ENCODER_ERROR FDKaacEnc_DetermineBandWidth(INT* bandWidth,
       case MODE_1_2_2:    /* sce + cpe + cpe */
       case MODE_1_2_2_1:  /* (5.1) sce + cpe + cpe + lfe */
       case MODE_1_2_2_2_1: /* (7.1) sce + cpe + cpe + cpe + lfe */
+      case MODE_7_1_REAR_SURROUND:
+      case MODE_7_1_FRONT_CENTER:
         entryNo = 1;      /* use stereo bandwith settings */
         break;
 
diff --git a/libAACenc/src/bitenc.cpp b/libAACenc/src/bitenc.cpp
index 5e9eaf9..8e477aa 100644
--- a/libAACenc/src/bitenc.cpp
+++ b/libAACenc/src/bitenc.cpp
@@ -1360,7 +1360,7 @@ AAC_ENCODER_ERROR FDKaacEnc_WriteBitstream(HANDLE_TRANSPORTENC hTpEnc,
 
   if ( (syntaxFlags & AC_ER) && !(syntaxFlags & AC_DRM) )
   {
-    UCHAR channelElementExtensionWritten[(6)][(1)]; /* 0: extension not touched, 1: extension already written */
+    UCHAR channelElementExtensionWritten[(8)][(1)]; /* 0: extension not touched, 1: extension already written */
 
     FDKmemclear(channelElementExtensionWritten, sizeof(channelElementExtensionWritten));
 
diff --git a/libAACenc/src/channel_map.cpp b/libAACenc/src/channel_map.cpp
index 352f48c..559a4ce 100644
--- a/libAACenc/src/channel_map.cpp
+++ b/libAACenc/src/channel_map.cpp
@@ -124,7 +124,7 @@ amm-info@iis.fraunhofer.de
 typedef struct {
 
   CHANNEL_MODE  encoderMode;
-  INT           channel_assignment[/*(6)*/12];
+  INT           channel_assignment[/*(8)*/12];
 
 } CHANNEL_ASSIGNMENT_INFO_TAB;
 
@@ -139,6 +139,8 @@ static const CHANNEL_ASSIGNMENT_INFO_TAB assignmentInfoTabMpeg[] =
      { MODE_1_2_2,                   { 0, 1, 2, 3, 4,-1,-1,-1,-1,-1,-1,-1} },  /*  5ch       */
      { MODE_1_2_2_1,                 { 0, 1, 2, 3, 4, 5,-1,-1,-1,-1,-1,-1} },  /*  5.1ch     */
      { MODE_1_2_2_2_1,               { 0, 1, 2, 3, 4, 5, 6, 7,-1,-1,-1,-1} },  /*  7.1ch     */
+     { MODE_7_1_REAR_SURROUND,       { 0, 1, 2, 3, 4, 5, 6, 7,-1,-1,-1,-1} },  /*  7.1ch     */
+     { MODE_7_1_FRONT_CENTER,        { 0, 1, 2, 3, 4, 5, 6, 7,-1,-1,-1,-1} }   /*  7.1ch     */
 };
 
 static const CHANNEL_ASSIGNMENT_INFO_TAB assignmentInfoTabWav[] =
@@ -150,7 +152,9 @@ static const CHANNEL_ASSIGNMENT_INFO_TAB assignmentInfoTabWav[] =
      { MODE_1_2_1,                   { 2, 0, 1, 3,-1,-1,-1,-1,-1,-1,-1,-1} },  /*  4ch       */
      { MODE_1_2_2,                   { 2, 0, 1, 3, 4,-1,-1,-1,-1,-1,-1,-1} },  /*  5ch       */
      { MODE_1_2_2_1,                 { 2, 0, 1, 4, 5, 3,-1,-1,-1,-1,-1,-1} },  /*  5.1ch     */
-     { MODE_1_2_2_2_1,               { 2, 0, 1, 6, 7, 4, 5, 3,-1,-1,-1,-1} },  /*  7.1ch     */
+     { MODE_1_2_2_2_1,               { 2, 6, 7, 0, 1, 4, 5, 3,-1,-1,-1,-1} },  /*  7.1ch     */
+     { MODE_7_1_REAR_SURROUND,       { 2, 0, 1, 6, 7, 4, 5, 3,-1,-1,-1,-1} },  /*  7.1ch     */
+     { MODE_7_1_FRONT_CENTER,        { 2, 6, 7, 0, 1, 4, 5, 3,-1,-1,-1,-1} },  /*  7.1ch     */
 };
 
 /* Channel mode configuration tab provides,
@@ -165,6 +169,8 @@ static const CHANNEL_MODE_CONFIG_TAB channelModeConfig[] =
    { MODE_1_2_2,                    5,  5,  3 },   /* SCE,CPE,CPE         */
    { MODE_1_2_2_1,                  6,  5,  4 },   /* SCE,CPE,CPE,LFE     */
    { MODE_1_2_2_2_1,                8,  7,  5 },   /* SCE,CPE,CPE,CPE,LFE */
+   { MODE_7_1_REAR_SURROUND,        8,  7,  5 },
+   { MODE_7_1_FRONT_CENTER,         8,  7,  5 },
 };
 
 #define MAX_MODES (sizeof(assignmentInfoTabWav)/sizeof(CHANNEL_ASSIGNMENT_INFO_TAB))
@@ -315,6 +321,8 @@ AAC_ENCODER_ERROR FDKaacEnc_InitChannelMapping(CHANNEL_MODE mode, CHANNEL_ORDER
       break;
 
     case MODE_1_2_2_2_1:
+    case MODE_7_1_REAR_SURROUND:
+    case MODE_7_1_FRONT_CENTER:
       /* (7.1) sce + cpe + cpe + cpe + lfe */
       FDKaacEnc_initElement(&cm->elInfo[0], ID_SCE, &count, mode, co, it_cnt, FL2FXCONST_DBL(0.18f));
       FDKaacEnc_initElement(&cm->elInfo[1], ID_CPE, &count, mode, co, it_cnt, FL2FXCONST_DBL(0.26f));
@@ -322,14 +330,13 @@ AAC_ENCODER_ERROR FDKaacEnc_InitChannelMapping(CHANNEL_MODE mode, CHANNEL_ORDER
       FDKaacEnc_initElement(&cm->elInfo[3], ID_CPE, &count, mode, co, it_cnt, FL2FXCONST_DBL(0.26f));
       FDKaacEnc_initElement(&cm->elInfo[4], ID_LFE, &count, mode, co, it_cnt, FL2FXCONST_DBL(0.04f));
       break;
-
     default:
       //*chMap=0;
       return AAC_ENC_UNSUPPORTED_CHANNELCONFIG;
   };
 
 
-  FDK_ASSERT(cm->nElements<=(6));
+  FDK_ASSERT(cm->nElements<=(8));
 
 
   return AAC_ENC_OK;
@@ -442,19 +449,18 @@ AAC_ENCODER_ERROR FDKaacEnc_InitElementBits(QC_STATE *hQC,
 
     break;
   }
-
-  case MODE_1_2_2_2_1:{
-      /* (7.1) sce + cpe + cpe + cpe + lfe */
-    hQC->elementBits[0]->relativeBitsEl = cm->elInfo[0].relativeBits;
-    hQC->elementBits[1]->relativeBitsEl = cm->elInfo[1].relativeBits;
-    hQC->elementBits[2]->relativeBitsEl = cm->elInfo[2].relativeBits;
-    hQC->elementBits[3]->relativeBitsEl = cm->elInfo[3].relativeBits;
-    hQC->elementBits[4]->relativeBitsEl = cm->elInfo[4].relativeBits;
-    FIXP_DBL sceRate  = cm->elInfo[0].relativeBits;
-    FIXP_DBL cpe1Rate = cm->elInfo[1].relativeBits;
-    FIXP_DBL cpe2Rate = cm->elInfo[2].relativeBits;
-    FIXP_DBL cpe3Rate = cm->elInfo[3].relativeBits;
-    FIXP_DBL lfeRate  = cm->elInfo[4].relativeBits;
+  case MODE_7_1_REAR_SURROUND:
+  case MODE_7_1_FRONT_CENTER:
+  case MODE_1_2_2_2_1: {
+    int cpe3Idx = 3;
+    int lfeIdx  = 4;
+
+    /* (7.1) sce + cpe + cpe + cpe + lfe */
+    FIXP_DBL sceRate  = hQC->elementBits[0]->relativeBitsEl = cm->elInfo[0].relativeBits;
+    FIXP_DBL cpe1Rate = hQC->elementBits[1]->relativeBitsEl = cm->elInfo[1].relativeBits;
+    FIXP_DBL cpe2Rate = hQC->elementBits[2]->relativeBitsEl = cm->elInfo[2].relativeBits;
+    FIXP_DBL cpe3Rate = hQC->elementBits[cpe3Idx]->relativeBitsEl = cm->elInfo[cpe3Idx].relativeBits;
+    FIXP_DBL lfeRate  = hQC->elementBits[lfeIdx]->relativeBitsEl = cm->elInfo[lfeIdx].relativeBits;
 
     int maxBitsTot = maxChannelBits * 7; /* LFE does not add to bit reservoir */
     int sc = CountLeadingBits(fixMax(maxChannelBits,averageBitsTot));
@@ -466,17 +472,16 @@ AAC_ENCODER_ERROR FDKaacEnc_InitElementBits(QC_STATE *hQC,
     hQC->elementBits[0]->chBitrateEl = fMult(sceRate,  (FIXP_DBL)(bitrateTot<<sc_brTot))>>sc_brTot;
     hQC->elementBits[1]->chBitrateEl = fMult(cpe1Rate, (FIXP_DBL)(bitrateTot<<sc_brTot))>>(sc_brTot+1);
     hQC->elementBits[2]->chBitrateEl = fMult(cpe2Rate, (FIXP_DBL)(bitrateTot<<sc_brTot))>>(sc_brTot+1);
-    hQC->elementBits[3]->chBitrateEl = fMult(cpe3Rate, (FIXP_DBL)(bitrateTot<<sc_brTot))>>(sc_brTot+1);
-    hQC->elementBits[4]->chBitrateEl = fMult(lfeRate,  (FIXP_DBL)(bitrateTot<<sc_brTot))>>sc_brTot;
+    hQC->elementBits[cpe3Idx]->chBitrateEl = fMult(cpe3Rate, (FIXP_DBL)(bitrateTot<<sc_brTot))>>(sc_brTot+1);
+    hQC->elementBits[lfeIdx]->chBitrateEl = fMult(lfeRate,  (FIXP_DBL)(bitrateTot<<sc_brTot))>>sc_brTot;
 
     hQC->elementBits[0]->maxBitsEl = maxChannelBits;
     hQC->elementBits[1]->maxBitsEl = 2*maxChannelBits;
     hQC->elementBits[2]->maxBitsEl = 2*maxChannelBits;
-    hQC->elementBits[3]->maxBitsEl = 2*maxChannelBits;
-    hQC->elementBits[4]->maxBitsEl = maxLfeBits;
+    hQC->elementBits[cpe3Idx]->maxBitsEl = 2*maxChannelBits;
+    hQC->elementBits[lfeIdx]->maxBitsEl = maxLfeBits;
     break;
   }
-
   default:
     return AAC_ENC_UNSUPPORTED_CHANNELCONFIG;
   }
@@ -518,6 +523,8 @@ ELEMENT_MODE FDKaacEnc_GetMonoStereoMode(const CHANNEL_MODE mode){
   case MODE_1_2_2:
   case MODE_1_2_2_1:
   case MODE_1_2_2_2_1:
+  case MODE_7_1_REAR_SURROUND:
+  case MODE_7_1_FRONT_CENTER:
     monoStereoSetting = EL_MODE_STEREO;
     break;
   default:            /* error */
diff --git a/libAACenc/src/interface.h b/libAACenc/src/interface.h
index 2ec1852..51fb72a 100644
--- a/libAACenc/src/interface.h
+++ b/libAACenc/src/interface.h
@@ -156,8 +156,8 @@ typedef struct {
 
 typedef struct {
 
-  PSY_OUT_ELEMENT* psyOutElement[(6)];
-  PSY_OUT_CHANNEL* pPsyOutChannels[(6)];
+  PSY_OUT_ELEMENT* psyOutElement[(8)];
+  PSY_OUT_CHANNEL* pPsyOutChannels[(8)];
 
 }PSY_OUT;
 
diff --git a/libAACenc/src/metadata_compressor.cpp b/libAACenc/src/metadata_compressor.cpp
index 6fd8266..876de57 100644
--- a/libAACenc/src/metadata_compressor.cpp
+++ b/libAACenc/src/metadata_compressor.cpp
@@ -539,14 +539,25 @@ INT FDK_DRC_Generator_Initialize(
         drcComp->channelIdx[RS]  = channelMapping.elInfo[2].ChannelIndex[1];
         break;
     case MODE_1_2_2_2_1: /* 7.1 ch */
-        drcComp->channelIdx[L]   = channelMapping.elInfo[1].ChannelIndex[0];
-        drcComp->channelIdx[R]   = channelMapping.elInfo[1].ChannelIndex[1];
-        drcComp->channelIdx[C]   = channelMapping.elInfo[0].ChannelIndex[0];
-        drcComp->channelIdx[LFE] = channelMapping.elInfo[4].ChannelIndex[0];
-        drcComp->channelIdx[LS]  = channelMapping.elInfo[2].ChannelIndex[0];
-        drcComp->channelIdx[RS]  = channelMapping.elInfo[2].ChannelIndex[1];
-        drcComp->channelIdx[LS2] = channelMapping.elInfo[3].ChannelIndex[0];
-        drcComp->channelIdx[RS2] = channelMapping.elInfo[3].ChannelIndex[1];
+    case MODE_7_1_FRONT_CENTER:
+        drcComp->channelIdx[L]   = channelMapping.elInfo[2].ChannelIndex[0]; /* l */
+        drcComp->channelIdx[R]   = channelMapping.elInfo[2].ChannelIndex[1]; /* r */
+        drcComp->channelIdx[C]   = channelMapping.elInfo[0].ChannelIndex[0]; /* c */
+        drcComp->channelIdx[LFE] = channelMapping.elInfo[4].ChannelIndex[0]; /* lfe */
+        drcComp->channelIdx[LS]  = channelMapping.elInfo[3].ChannelIndex[0]; /* ls */
+        drcComp->channelIdx[RS]  = channelMapping.elInfo[3].ChannelIndex[1]; /* rs */
+        drcComp->channelIdx[LS2] = channelMapping.elInfo[1].ChannelIndex[0]; /* lc */
+        drcComp->channelIdx[RS2] = channelMapping.elInfo[1].ChannelIndex[1]; /* rc */
+        break;
+    case MODE_7_1_REAR_SURROUND:
+        drcComp->channelIdx[L]   = channelMapping.elInfo[1].ChannelIndex[0]; /* l */
+        drcComp->channelIdx[R]   = channelMapping.elInfo[1].ChannelIndex[1]; /* r */
+        drcComp->channelIdx[C]   = channelMapping.elInfo[0].ChannelIndex[0]; /* c */
+        drcComp->channelIdx[LFE] = channelMapping.elInfo[4].ChannelIndex[0]; /* lfe */
+        drcComp->channelIdx[LS]  = channelMapping.elInfo[3].ChannelIndex[0]; /* lrear */
+        drcComp->channelIdx[RS]  = channelMapping.elInfo[3].ChannelIndex[1]; /* rrear */
+        drcComp->channelIdx[LS2] = channelMapping.elInfo[2].ChannelIndex[0]; /* ls */
+        drcComp->channelIdx[RS2] = channelMapping.elInfo[2].ChannelIndex[1]; /* rs */
         break;
     case MODE_1_1:
     case MODE_1_1_1_1:
diff --git a/libAACenc/src/psy_main.cpp b/libAACenc/src/psy_main.cpp
index 0949b6d..59193c7 100644
--- a/libAACenc/src/psy_main.cpp
+++ b/libAACenc/src/psy_main.cpp
@@ -1340,7 +1340,7 @@ void FDKaacEnc_PsyClose(PSY_INTERNAL   **phPsyInternal,
 
       if (hPsyInternal)
       {
-        for (i=0; i<(6); i++) {
+        for (i=0; i<(8); i++) {
           if (hPsyInternal->pStaticChannels[i]) {
             if (hPsyInternal->pStaticChannels[i]->psyInputBuffer)
               FreeRam_aacEnc_PsyInputBuffer(&hPsyInternal->pStaticChannels[i]->psyInputBuffer);  /* AUDIO INPUT BUFFER */
@@ -1349,7 +1349,7 @@ void FDKaacEnc_PsyClose(PSY_INTERNAL   **phPsyInternal,
           }
         }
 
-        for (i=0; i<(6); i++) {
+        for (i=0; i<(8); i++) {
           if (hPsyInternal->psyElement[i])
             FreeRam_aacEnc_PsyElement(&hPsyInternal->psyElement[i]);                             /* PSY_ELEMENT */
         }
@@ -1363,12 +1363,12 @@ void FDKaacEnc_PsyClose(PSY_INTERNAL   **phPsyInternal,
       for (n=0; n<(1); n++) {
         if (phPsyOut[n])
         {
-          for (i=0; i<(6); i++) {
+          for (i=0; i<(8); i++) {
             if (phPsyOut[n]->pPsyOutChannels[i])
               FreeRam_aacEnc_PsyOutChannel(&phPsyOut[n]->pPsyOutChannels[i]);                  /* PSY_OUT_CHANNEL */
           }
 
-          for (i=0; i<(6); i++) {
+          for (i=0; i<(8); i++) {
             if (phPsyOut[n]->psyOutElement[i])
               FreeRam_aacEnc_PsyOutElements(&phPsyOut[n]->psyOutElement[i]);                   /* PSY_OUT_ELEMENTS */
           }
diff --git a/libAACenc/src/psy_main.h b/libAACenc/src/psy_main.h
index 29edca5..7bdcc38 100644
--- a/libAACenc/src/psy_main.h
+++ b/libAACenc/src/psy_main.h
@@ -117,8 +117,8 @@ typedef struct  {
 typedef struct  {
 
   PSY_CONFIGURATION  psyConf[2]; /* LONG / SHORT */
-  PSY_ELEMENT*       psyElement[(6)];
-  PSY_STATIC*        pStaticChannels[(6)];
+  PSY_ELEMENT*       psyElement[(8)];
+  PSY_STATIC*        pStaticChannels[(8)];
   PSY_DYNAMIC*       psyDynamic;
   INT                granuleLength;
 
diff --git a/libAACenc/src/qc_data.h b/libAACenc/src/qc_data.h
index 51e66c6..a9309c8 100644
--- a/libAACenc/src/qc_data.h
+++ b/libAACenc/src/qc_data.h
@@ -127,7 +127,7 @@ typedef struct {
   INT nChannels;
   INT nChannelsEff;
   INT nElements;
-  ELEMENT_INFO elInfo[(6)];
+  ELEMENT_INFO elInfo[(8)];
 } CHANNEL_MAPPING;
 
 typedef struct {
@@ -217,8 +217,8 @@ typedef struct
 
 typedef struct
 {
-  QC_OUT_ELEMENT    *qcElement[(6)];
-  QC_OUT_CHANNEL    *pQcOutChannels[(6)];
+  QC_OUT_ELEMENT    *qcElement[(8)];
+  QC_OUT_CHANNEL    *pQcOutChannels[(8)];
   QC_OUT_EXTENSION   extension[(2+2)];  /* global extension payload */
   INT          nExtensions;       /* number of extension payloads for this AU */
   INT          maxDynBits;        /* maximal allowed dynamic bits in frame */
@@ -265,7 +265,7 @@ typedef struct
 
   PADDING padding;
 
-  ELEMENT_BITS  *elementBits[(6)];
+  ELEMENT_BITS  *elementBits[(8)];
   BITCNTR_STATE *hBitCounter;
   ADJ_THR_STATE *hAdjThr;
 
diff --git a/libAACenc/src/qc_main.cpp b/libAACenc/src/qc_main.cpp
index 15646e9..b74510a 100644
--- a/libAACenc/src/qc_main.cpp
+++ b/libAACenc/src/qc_main.cpp
@@ -511,7 +511,7 @@ AAC_ENCODER_ERROR FDKaacEnc_AdjustBitrate(QC_STATE        *RESTRICT hQC,
 }
 
 static AAC_ENCODER_ERROR FDKaacEnc_distributeElementDynBits(QC_STATE*         hQC,
-                                                  QC_OUT_ELEMENT*   qcElement[(6)],
+                                                  QC_OUT_ELEMENT*   qcElement[(8)],
                                                   CHANNEL_MAPPING*  cm,
                                                   INT               codeBits)
 {
@@ -610,7 +610,7 @@ static AAC_ENCODER_ERROR FDKaacEnc_prepareBitDistribution(QC_STATE*            h
                                                 PSY_OUT**            psyOut,
                                                 QC_OUT**             qcOut,
                                                 CHANNEL_MAPPING*     cm,
-                                                QC_OUT_ELEMENT*      qcElement[(1)][(6)],
+                                                QC_OUT_ELEMENT*      qcElement[(1)][(8)],
                                                 INT                  avgTotalBits,
                                                 INT                 *totalAvailableBits,
                                                 INT                 *avgTotalDynBits)
@@ -677,7 +677,7 @@ static AAC_ENCODER_ERROR FDKaacEnc_prepareBitDistribution(QC_STATE*            h
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 static AAC_ENCODER_ERROR FDKaacEnc_updateUsedDynBits(INT*               sumDynBitsConsumed,
-                                            QC_OUT_ELEMENT*    qcElement[(6)],
+                                            QC_OUT_ELEMENT*    qcElement[(8)],
                                             CHANNEL_MAPPING*   cm)
 {
   INT i;
@@ -720,7 +720,7 @@ static INT FDKaacEnc_getTotalConsumedDynBits(QC_OUT** qcOut,
 }
 
 static INT FDKaacEnc_getTotalConsumedBits(QC_OUT**          qcOut,
-                                QC_OUT_ELEMENT*   qcElement[(1)][(6)],
+                                QC_OUT_ELEMENT*   qcElement[(1)][(8)],
                                 CHANNEL_MAPPING*  cm,
                                 INT               globHdrBits,
                                 INT               nSubFrames)
@@ -820,7 +820,7 @@ AAC_ENCODER_ERROR FDKaacEnc_QCMain(QC_STATE* RESTRICT         hQC,
 
       /*-------------------------------------------- */
       /* helper pointer */
-      QC_OUT_ELEMENT*  qcElement[(1)][(6)];
+      QC_OUT_ELEMENT*  qcElement[(1)][(8)];
 
       /* work on a copy of qcChannel and qcElement */
       for (i=0; i<cm->nElements; i++)
@@ -897,10 +897,10 @@ AAC_ENCODER_ERROR FDKaacEnc_QCMain(QC_STATE* RESTRICT         hQC,
       } /* -end- sub frame counter */
 
       /*-------------------------------------------- */
-      INT iterations[(1)][(6)];
-      INT chConstraintsFulfilled[(1)][(6)][(2)];
-      INT calculateQuant[(1)][(6)][(2)];
-      INT constraintsFulfilled[(1)][(6)];
+      INT iterations[(1)][(8)];
+      INT chConstraintsFulfilled[(1)][(8)][(2)];
+      INT calculateQuant[(1)][(8)][(2)];
+      INT constraintsFulfilled[(1)][(8)];
       /*-------------------------------------------- */
 
 
@@ -1247,7 +1247,7 @@ static AAC_ENCODER_ERROR FDKaacEnc_reduceBitConsumption(int*             iterati
 
 AAC_ENCODER_ERROR FDKaacEnc_updateFillBits(CHANNEL_MAPPING*          cm,
                                            QC_STATE*                 qcKernel,
-                                           ELEMENT_BITS* RESTRICT    elBits[(6)],
+                                           ELEMENT_BITS* RESTRICT    elBits[(8)],
                                            QC_OUT**                  qcOut)
 {
   switch (qcKernel->bitrateMode) {
@@ -1603,10 +1603,10 @@ void  FDKaacEnc_QCClose (QC_STATE  **phQCstate, QC_OUT **phQC)
     for (n=0;n<(1);n++) {
       if (phQC[n] != NULL) {
         QC_OUT    *hQC      = phQC[n];
-        for (i=0; i<(6); i++) {
+        for (i=0; i<(8); i++) {
         }
 
-        for (i=0; i<(6); i++) {
+        for (i=0; i<(8); i++) {
           if (hQC->qcElement[i])
             FreeRam_aacEnc_QCelement(&hQC->qcElement[i]);
         }
@@ -1626,7 +1626,7 @@ void  FDKaacEnc_QCClose (QC_STATE  **phQCstate, QC_OUT **phQC)
       if (hQCstate->hBitCounter != NULL)
         FDKaacEnc_BCClose(&hQCstate->hBitCounter);
 
-      for (i=0; i<(6); i++) {
+      for (i=0; i<(8); i++) {
         if (hQCstate->elementBits[i]!=NULL) {
           FreeRam_aacEnc_ElementBits(&hQCstate->elementBits[i]);
         }
diff --git a/libAACenc/src/qc_main.h b/libAACenc/src/qc_main.h
index e1f5787..4e8c042 100644
--- a/libAACenc/src/qc_main.h
+++ b/libAACenc/src/qc_main.h
@@ -140,7 +140,7 @@ AAC_ENCODER_ERROR FDKaacEnc_QCMain(QC_STATE* RESTRICT         hQC,
 
 AAC_ENCODER_ERROR FDKaacEnc_updateFillBits(CHANNEL_MAPPING*          cm,
                                            QC_STATE*                 qcKernel,
-                                           ELEMENT_BITS* RESTRICT    elBits[(6)],
+                                           ELEMENT_BITS* RESTRICT    elBits[(8)],
                                            QC_OUT**                  qcOut);