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| author | Jean-Michel Trivi <jmtrivi@google.com> | 2016-04-09 00:36:07 +0000 |
|---|---|---|
| committer | android-build-merger <android-build-merger@google.com> | 2016-04-09 00:36:07 +0000 |
| commit | 125815b0ed558c72bb019a2d36c662e5e7f7c030 (patch) | |
| tree | 626b5c026f23b0c8ec4dab155faf86d55cd9d94e /libAACenc/src/quantize.cpp | |
| parent | d75233c2da4b49259d2e2de701f326d1a8d897b1 (diff) | |
| parent | 46ba3676b854acbc69a4c7845f578d4c2886377b (diff) | |
| download | fdk-aac-125815b0ed558c72bb019a2d36c662e5e7f7c030.tar.gz fdk-aac-125815b0ed558c72bb019a2d36c662e5e7f7c030.tar.bz2 fdk-aac-125815b0ed558c72bb019a2d36c662e5e7f7c030.zip | |
AAC/SBR encoder improvements
am: 46ba367
* commit '46ba3676b854acbc69a4c7845f578d4c2886377b':
AAC/SBR encoder improvements
Change-Id: Id839c5ba8b79eddb7e239b7ec1b26fb5079b7d81
Diffstat (limited to 'libAACenc/src/quantize.cpp')
| -rw-r--r-- | libAACenc/src/quantize.cpp | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/libAACenc/src/quantize.cpp b/libAACenc/src/quantize.cpp index 5380e35..a74da0e 100644 --- a/libAACenc/src/quantize.cpp +++ b/libAACenc/src/quantize.cpp @@ -2,7 +2,7 @@ /* ----------------------------------------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. +© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. All rights reserved. 1. INTRODUCTION @@ -104,13 +104,19 @@ amm-info@iis.fraunhofer.de static void FDKaacEnc_quantizeLines(INT gain, INT noOfLines, FIXP_DBL *mdctSpectrum, - SHORT *quaSpectrum) + SHORT *quaSpectrum, + INT dZoneQuantEnable) { int line; - FIXP_DBL k = FL2FXCONST_DBL(-0.0946f + 0.5f)>>16; + FIXP_DBL k = FL2FXCONST_DBL(0.0f); FIXP_QTD quantizer = FDKaacEnc_quantTableQ[(-gain)&3]; INT quantizershift = ((-gain)>>2)+1; + const INT kShift=16; + if (dZoneQuantEnable) + k = FL2FXCONST_DBL(0.23f)>>kShift; + else + k = FL2FXCONST_DBL(-0.0946f + 0.5f)>>kShift; for (line = 0; line < noOfLines; line++) { @@ -263,7 +269,8 @@ void FDKaacEnc_QuantizeSpectrum(INT sfbCnt, FIXP_DBL *mdctSpectrum, INT globalGain, INT *scalefactors, - SHORT *quantizedSpectrum) + SHORT *quantizedSpectrum, + INT dZoneQuantEnable) { INT sfbOffs,sfb; @@ -280,7 +287,8 @@ void FDKaacEnc_QuantizeSpectrum(INT sfbCnt, FDKaacEnc_quantizeLines(globalGain - scalefactor, /* QSS */ sfbOffset[sfbOffs+sfb+1] - sfbOffset[sfbOffs+sfb], mdctSpectrum + sfbOffset[sfbOffs+sfb], - quantizedSpectrum + sfbOffset[sfbOffs+sfb]); + quantizedSpectrum + sfbOffset[sfbOffs+sfb], + dZoneQuantEnable); } } @@ -296,7 +304,8 @@ void FDKaacEnc_QuantizeSpectrum(INT sfbCnt, FIXP_DBL FDKaacEnc_calcSfbDist(FIXP_DBL *mdctSpectrum, SHORT *quantSpectrum, INT noOfLines, - INT gain + INT gain, + INT dZoneQuantEnable ) { INT i,scale; @@ -311,7 +320,8 @@ FIXP_DBL FDKaacEnc_calcSfbDist(FIXP_DBL *mdctSpectrum, FDKaacEnc_quantizeLines(gain, 1, &mdctSpectrum[i], - &quantSpectrum[i]); + &quantSpectrum[i], + dZoneQuantEnable); if (fAbs(quantSpectrum[i])>MAX_QUANT) { return FL2FXCONST_DBL(0.0f); |