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| author | Jean-Baptiste Queru <jbq@google.com> | 2012-08-13 10:03:01 -0700 |
|---|---|---|
| committer | android code review <noreply-gerritcodereview@google.com> | 2012-08-13 10:03:01 -0700 |
| commit | a00bd4cf64ff9f95739ef89d0be806e8efdecb52 (patch) | |
| tree | 43d650bf77368c1769881c4bcb65fdf04e51efab | |
| parent | d2854e2ac7e7e3cbe4b3c67a2d7823a6153c2488 (diff) | |
| parent | 65745694963cc601a2403d071311261f200d6cb9 (diff) | |
| download | fdk-aac-a00bd4cf64ff9f95739ef89d0be806e8efdecb52.tar.gz fdk-aac-a00bd4cf64ff9f95739ef89d0be806e8efdecb52.tar.bz2 fdk-aac-a00bd4cf64ff9f95739ef89d0be806e8efdecb52.zip | |
Merge "Don't try to shift more bits than the variable length"
| -rw-r--r-- | libAACenc/src/quantize.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/libAACenc/src/quantize.cpp b/libAACenc/src/quantize.cpp index 9694901..dc85a6d 100644 --- a/libAACenc/src/quantize.cpp +++ b/libAACenc/src/quantize.cpp @@ -127,7 +127,10 @@ static void FDKaacEnc_quantizeLines(INT gain, accu = fMultDiv2(FDKaacEnc_mTab_3_4[tabIndex],FDKaacEnc_quantTableE[totalShift&3]); totalShift = (16-4)-(3*(totalShift>>2)); FDK_ASSERT(totalShift >=0); /* MAX_QUANT_VIOLATION */ - accu>>=totalShift; + if (totalShift < 32) + accu>>=totalShift; + else + accu = 0; quaSpectrum[line] = (SHORT)(-((LONG)(k + accu) >> (DFRACT_BITS-1-16))); } else if(accu > FL2FXCONST_DBL(0.0f)) @@ -140,7 +143,10 @@ static void FDKaacEnc_quantizeLines(INT gain, accu = fMultDiv2(FDKaacEnc_mTab_3_4[tabIndex],FDKaacEnc_quantTableE[totalShift&3]); totalShift = (16-4)-(3*(totalShift>>2)); FDK_ASSERT(totalShift >=0); /* MAX_QUANT_VIOLATION */ - accu>>=totalShift; + if (totalShift < 32) + accu>>=totalShift; + else + accu = 0; quaSpectrum[line] = (SHORT)((LONG)(k + accu) >> (DFRACT_BITS-1-16)); } else |