diff options
Diffstat (limited to 'libSBRenc/src/env_est.cpp')
| -rw-r--r-- | libSBRenc/src/env_est.cpp | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/libSBRenc/src/env_est.cpp b/libSBRenc/src/env_est.cpp index a9a7881..929f229 100644 --- a/libSBRenc/src/env_est.cpp +++ b/libSBRenc/src/env_est.cpp @@ -2,7 +2,7 @@ /* ----------------------------------------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. +© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. All rights reserved. 1. INTRODUCTION @@ -129,9 +129,6 @@ FDKsbrEnc_getEnergyFromCplxQmfData(FIXP_DBL **RESTRICT energyValues,/*!< the res /* Get Scratch buffer */ C_ALLOC_SCRATCH_START(tmpNrg, FIXP_DBL, QMF_CHANNELS*QMF_MAX_TIME_SLOTS/2); - FDK_ASSERT(numberBands <= QMF_CHANNELS); - FDK_ASSERT(numberCols <= QMF_MAX_TIME_SLOTS); - /* Get max possible scaling of QMF data */ scale = DFRACT_BITS; for (k=0; k<numberCols; k++) { @@ -817,22 +814,22 @@ calculateSbrEnvelope (FIXP_DBL **RESTRICT YBufferLeft, /*! energy buffer left * } /* ld64 to integer conversion */ - nrgLeft = fixMin(fixMax(nrgLeft,FL2FXCONST_DBL(0.0f)),FL2FXCONST_DBL(0.5f)); + nrgLeft = fixMin(fixMax(nrgLeft,FL2FXCONST_DBL(0.0f)),(FL2FXCONST_DBL(0.5f)>>oneBitLess)); nrgLeft = (FIXP_DBL)(LONG)nrgLeft >> (DFRACT_BITS-1-LD_DATA_SHIFT-1-oneBitLess-1); sfb_nrgLeft[m] = ((INT)nrgLeft+1)>>1; /* rounding */ if (stereoMode == SBR_COUPLING) { FIXP_DBL scaleFract; + int sc0, sc1; - if (nrgRight != FL2FXCONST_DBL(0.0f)) { - int sc0 = CountLeadingBits(nrgLeft2); - int sc1 = CountLeadingBits(nrgRight); + nrgLeft2 = fixMax((FIXP_DBL)0x1, nrgLeft2); + nrgRight = fixMax((FIXP_DBL)0x1, nrgRight); - scaleFract = ((FIXP_DBL)(sc0-sc1)) << (DFRACT_BITS-1-LD_DATA_SHIFT); /* scale value in ld64 representation */ - nrgRight = CalcLdData(nrgLeft2<<sc0) - CalcLdData(nrgRight<<sc1) - scaleFract; - } - else - nrgRight = FL2FXCONST_DBL(0.5f); /* ld64(4294967296.0f) */ + sc0 = CountLeadingBits(nrgLeft2); + sc1 = CountLeadingBits(nrgRight); + + scaleFract = ((FIXP_DBL)(sc0-sc1)) << (DFRACT_BITS-1-LD_DATA_SHIFT); /* scale value in ld64 representation */ + nrgRight = CalcLdData(nrgLeft2<<sc0) - CalcLdData(nrgRight<<sc1) - scaleFract; /* ld64 to integer conversion */ nrgRight = (FIXP_DBL)(LONG)(nrgRight) >> (DFRACT_BITS-1-LD_DATA_SHIFT-1-oneBitLess); |