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| author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2021-06-01 14:42:00 +0200 |
|---|---|---|
| committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2021-06-01 14:42:00 +0200 |
| commit | e0835d4cbde8e3b61b0c965afcd41f8f4b7ac121 (patch) | |
| tree | f49619fc806249da71afaf2ac14f99e088d24153 /fdk-aac/libSBRdec/src/lpp_tran.cpp | |
| parent | 5ad4acef6721a67b8156cd6f7b45ad59849ca09b (diff) | |
| download | ODR-AudioEnc-e0835d4cbde8e3b61b0c965afcd41f8f4b7ac121.tar.gz ODR-AudioEnc-e0835d4cbde8e3b61b0c965afcd41f8f4b7ac121.tar.bz2 ODR-AudioEnc-e0835d4cbde8e3b61b0c965afcd41f8f4b7ac121.zip | |
Update fdk to v2.0.2
Diffstat (limited to 'fdk-aac/libSBRdec/src/lpp_tran.cpp')
| -rw-r--r-- | fdk-aac/libSBRdec/src/lpp_tran.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fdk-aac/libSBRdec/src/lpp_tran.cpp b/fdk-aac/libSBRdec/src/lpp_tran.cpp index 6acb626..93e1158 100644 --- a/fdk-aac/libSBRdec/src/lpp_tran.cpp +++ b/fdk-aac/libSBRdec/src/lpp_tran.cpp @@ -1014,8 +1014,8 @@ void lppTransposerHBE( pSettings->nCols) + lowBandShift); - dynamicScale = fixMax( - 0, dynamicScale - 1); /* one additional bit headroom to prevent -1.0 */ + dynamicScale = + dynamicScale - 1; /* one additional bit headroom to prevent -1.0 */ /* Scale temporal QMF buffer. @@ -1194,6 +1194,9 @@ void lppTransposerHBE( } else { /* bw <= 0 */ int descale = fixMin(DFRACT_BITS - 1, (LPC_SCALE_FACTOR + dynamicScale)); + dynamicScale += + 1; /* prevent negativ scale factor due to 'one additional bit + headroom' */ for (i = startSample; i < stopSample; i++) { FIXP_DBL accu1, accu2; @@ -1210,9 +1213,9 @@ void lppTransposerHBE( dynamicScale; qmfBufferReal[i][loBand] = - (lowBandReal[LPC_ORDER + i] >> descale) + (accu1 << 1); + (lowBandReal[LPC_ORDER + i] >> descale) + (accu1 << (1 + 1)); qmfBufferImag[i][loBand] = - (lowBandImag[LPC_ORDER + i] >> descale) + (accu2 << 1); + (lowBandImag[LPC_ORDER + i] >> descale) + (accu2 << (1 + 1)); } } /* bw <= 0 */ |