From 5016eb7f6582fbb2d72d79be782325a12df08864 Mon Sep 17 00:00:00 2001
From: Jean-Michel Trivi <jmtrivi@google.com>
Date: Tue, 27 Aug 2013 16:28:09 -0700
Subject: Decoder stability, sanity checks improvements

* AAC-Decoder

   - Improved PCE handling for saver (re-)configuration and metadata processing.
     Modified file(s):
        libAACdec/src/aacdecoder.cpp
        libAACdec/src/aacdecoder_lib.cpp

   - Transport layer changes (config found) -> to be evaluated.
     Modified file(s):
        libMpegTPDec/include/tpdec_lib.h
        libMpegTPDec/src/tpdec_latm.h
        libMpegTPDec/src/version
        libMpegTPDec/src/tpdec_asc.cpp
        libMpegTPDec/src/tpdec_lib.cpp
        libMpegTPDec/src/tpdec_adts.cpp
        libMpegTPDec/src/tpdec_latm.cpp
        libSYS/include/FDK_audio.h
        libSYS/src/genericStds.cpp

   - Enable concealment state machine to skip states if the corresponding
     parameter is set to zero.
     Modified file(s):
        libAACdec/src/conceal.cpp

   - Add some more sanity checks to avoid segmentation faults especially when
     setting dynamic API params.
     Modified file(s):
        libAACdec/src/aacdecoder_lib.cpp

   - Fix to do a fail-safe initialization of IMDCT for all channels even with
     corrupt streams.
     Modified file(s):
        libAACdec/src/aacdecoder.cpp

   - HCR decoder fix (remove warnings).
     Modified file(s):
        libAACdec/src/block.cpp

   - Fix border calculation in SBR decoder's LPP transposer patch determination.
     Modified file(s):
        libSBRdec/src/env_dec.cpp
        libSBRdec/src/sbrdecoder.cpp
        libSBRdec/src/lpp_tran.cpp

Bug 9428126

Change-Id: Ib415b702b88a7ec8e9a55789d79cafb39296d26b
---
 libSBRdec/src/env_dec.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'libSBRdec/src/env_dec.cpp')

diff --git a/libSBRdec/src/env_dec.cpp b/libSBRdec/src/env_dec.cpp
index 5aa5ba7..24b2d3b 100644
--- a/libSBRdec/src/env_dec.cpp
+++ b/libSBRdec/src/env_dec.cpp
@@ -624,8 +624,8 @@ timeCompensateFirstEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static con
 
   deltaExp = FDK_getNumOctavesDiv8(newLen, refLen);
 
-  /* Shift by -3 to rescale ld-table, 1-ampRes to enable coarser steps */
-  shift = (FRACT_BITS - 1 - ENV_EXP_FRACT + 1 - h_sbr_data->ampResolutionCurrentFrame - 3);
+  /* Shift by -3 to rescale ld-table, ampRes-1 to enable coarser steps */
+  shift = (FRACT_BITS - 1 - ENV_EXP_FRACT - 1 + h_sbr_data->ampResolutionCurrentFrame - 3);
   deltaExp = deltaExp >> shift;
   pFrameInfo->borders[0] = estimatedStartPos;
   pFrameInfo->bordersNoise[0] = estimatedStartPos;
-- 
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