4 files changed, 26 insertions, 9 deletions
diff --git a/libSBRdec/src/env_extr.cpp b/libSBRdec/src/env_extr.cpp
index e6ae6dc..c72a7b6 100644
--- a/libSBRdec/src/env_extr.cpp
+++ b/libSBRdec/src/env_extr.cpp
@@ -1145,10 +1145,10 @@ static int sbrGetEnvelope(
   \brief    Generates frame info for FIXFIXonly frame class used for low delay
  version
 
-  \return   nothing
+  \return   zero for error, one for correct.
  ****************************************************************************/
-static void generateFixFixOnly(FRAME_INFO *hSbrFrameInfo, int tranPosInternal,
-                               int numberTimeSlots, const UINT flags) {
+static int generateFixFixOnly(FRAME_INFO *hSbrFrameInfo, int tranPosInternal,
+                              int numberTimeSlots, const UINT flags) {
   int nEnv, i, tranIdx;
   const int *pTable;
 
@@ -1159,12 +1159,11 @@ static void generateFixFixOnly(FRAME_INFO *hSbrFrameInfo, int tranPosInternal,
     case 15:
       pTable = FDK_sbrDecoder_envelopeTable_15[tranPosInternal];
       break;
-    default:
-      FDK_ASSERT(0);
-      /* fall through */
     case 16:
       pTable = FDK_sbrDecoder_envelopeTable_16[tranPosInternal];
       break;
+    default:
+      return 0;
   }
 
   /* look number of envelopes in table */
@@ -1187,6 +1186,8 @@ static void generateFixFixOnly(FRAME_INFO *hSbrFrameInfo, int tranPosInternal,
   /* nEnv is always > 1, so nNoiseEnvelopes is always 2 (IEC 14496-3 4.6.19.3.2)
    */
   hSbrFrameInfo->nNoiseEnvelopes = 2;
+
+  return 1;
 }
 
 /*!
@@ -1230,7 +1231,9 @@ static int extractLowDelayGrid(
   }
 
   /* calculate borders according to the transient position */
-  generateFixFixOnly(pFrameInfo, temp, numberTimeSlots, flags);
+  if (!generateFixFixOnly(pFrameInfo, temp, numberTimeSlots, flags)) {
+    return 0;
+  }
 
   /* decode freq res: */
   for (k = 0; k < pFrameInfo->nEnvelopes; k++) {
diff --git a/libSBRdec/src/hbe.cpp b/libSBRdec/src/hbe.cpp
index 53b21c9..1141e9c 100644
--- a/libSBRdec/src/hbe.cpp
+++ b/libSBRdec/src/hbe.cpp
@@ -1056,6 +1056,10 @@ SBR_ERROR QmfTransposerReInit(HANDLE_HBE_TRANSPOSER hQmfTransposer,
     const FIXP_QTW* tmp_t_sin;
 
     hQmfTransposer->startBand = FreqBandTable[0][0];
+    FDK_ASSERT((!hQmfTransposer->bSbr41 && hQmfTransposer->startBand <= 32) ||
+               (hQmfTransposer->bSbr41 &&
+                hQmfTransposer->startBand <=
+                    16)); /* is checked by resetFreqBandTables() */
     hQmfTransposer->stopBand = FreqBandTable[0][NSfb[0]];
 
     hQmfTransposer->synthSize =
diff --git a/libSBRdec/src/sbr_dec.cpp b/libSBRdec/src/sbr_dec.cpp
index 2e18e6c..30611e7 100644
--- a/libSBRdec/src/sbr_dec.cpp
+++ b/libSBRdec/src/sbr_dec.cpp
@@ -1248,7 +1248,7 @@ resetSbrDec(HANDLE_SBR_DEC hSbrDec, HANDLE_SBR_HEADER_DATA hHeaderData,
 
   hSbrDec->savedStates = 0;
 
-  if (flags & SBRDEC_USAC_HARMONICSBR) {
+  if ((flags & SBRDEC_USAC_HARMONICSBR) && applySbrProc) {
     sbrError = QmfTransposerReInit(hSbrDec->hHBE,
                                    hHeaderData->freqBandData.freqBandTable,
                                    hHeaderData->freqBandData.nSfb);
diff --git a/libSBRdec/src/sbrdecoder.cpp b/libSBRdec/src/sbrdecoder.cpp
index e2455da..4bc6f69 100644
--- a/libSBRdec/src/sbrdecoder.cpp
+++ b/libSBRdec/src/sbrdecoder.cpp
@@ -1150,6 +1150,11 @@ SBR_ERROR sbrDecoder_Parse(HANDLE_SBRDECODER self, HANDLE_FDK_BITSTREAM hBs,
 
   int lastSlot, lastHdrSlot = 0, thisHdrSlot = 0;
 
+  if (*count <= 0) {
+    setFrameErrorFlag(self->pSbrElement[elementIndex], FRAME_ERROR);
+    return SBRDEC_OK;
+  }
+
   /* SBR sanity checks */
   if (self == NULL) {
     errorStatus = SBRDEC_NOT_INITIALIZED;
@@ -1677,6 +1682,9 @@ static SBR_ERROR sbrDecoder_DecodeElement(
   /* reset */
   if (hSbrHeader->status & SBRDEC_HDR_STAT_RESET) {
     int ch;
+    int applySbrProc = (hSbrHeader->syncState == SBR_ACTIVE ||
+                        (hSbrHeader->frameErrorFlag == 0 &&
+                         hSbrHeader->syncState == SBR_HEADER));
     for (ch = 0; ch < numElementChannels; ch++) {
       SBR_ERROR errorStatusTmp = SBRDEC_OK;
 
@@ -1688,7 +1696,9 @@ static SBR_ERROR sbrDecoder_DecodeElement(
         hSbrHeader->syncState = UPSAMPLING;
       }
     }
-    hSbrHeader->status &= ~SBRDEC_HDR_STAT_RESET;
+    if (applySbrProc) {
+      hSbrHeader->status &= ~SBRDEC_HDR_STAT_RESET;
+    }
   }
 
   /* decoding */