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-rw-r--r--libSBRdec/src/sbr_dec.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/libSBRdec/src/sbr_dec.cpp b/libSBRdec/src/sbr_dec.cpp
index bd3cd10..1282338 100644
--- a/libSBRdec/src/sbr_dec.cpp
+++ b/libSBRdec/src/sbr_dec.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
@@ -760,6 +760,8 @@ createSbrDec (SBR_CHANNEL * hSbrChannel,
*/
{
int qmfErr;
+ /* Adapted QMF analysis post-twiddles for down-sampled HQ SBR */
+ const UINT downSampledFlag = (downsampleFac==2) ? QMF_FLAG_DOWNSAMPLED : 0;
qmfErr = qmfInitAnalysisFilterBank (
&hs->AnalysiscQMF,
@@ -768,7 +770,7 @@ createSbrDec (SBR_CHANNEL * hSbrChannel,
hHeaderData->freqBandData.lowSubband,
hHeaderData->freqBandData.highSubband,
hHeaderData->numberOfAnalysisBands,
- qmfFlags & (~QMF_FLAG_KEEP_STATES)
+ (qmfFlags & (~QMF_FLAG_KEEP_STATES)) | downSampledFlag
);
if (qmfErr != 0) {
return SBRDEC_UNSUPPORTED_CONFIG;