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Encoder intensity fix

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AAC encoder: Prevent illegal intensity values delta coding at short blocks.

Bug 9428126

Change-Id: Ic287b86f3229022740f2317ea74aabe612de5e6b
This commit is contained in:
Jean-Michel Trivi 2013-08-08 17:43:20 -07:00
parent ed247dfa54
commit 60a27b7fe5
3 changed files with 20 additions and 11 deletions
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2
libAACenc/src/aacenc_lib.cpp
View File

@ -98,7 +98,7 @@ amm-info@iis.fraunhofer.de
/* Encoder library info */
#define AACENCODER_LIB_VL0 3
#define AACENCODER_LIB_VL1 4
#define AACENCODER_LIB_VL2 2
#define AACENCODER_LIB_VL2 3
#define AACENCODER_LIB_TITLE "AAC Encoder"
#define AACENCODER_LIB_BUILD_DATE __DATE__
#define AACENCODER_LIB_BUILD_TIME __TIME__

27
libAACenc/src/intensity.cpp
View File

@ -450,23 +450,24 @@ FDKaacEnc_finalizeIntensityDecision(const FIXP_DBL *hrrErr,
const INT maxSfbPerGroup)
{
INT sfb,sfboffs, j;
INT startIsSfb = 0;
INT inIsBlock;
INT currentIsSfbCount;
FIXP_DBL overallHrrError;
FIXP_DBL isScaleLast = FL2FXCONST_DBL(0.0f);
FIXP_DBL isRegionLoudness;
INT isStartValueFound = 0;
for (sfboffs = 0; sfboffs < sfbCnt; sfboffs += sfbPerGroup) {
inIsBlock = 0;
currentIsSfbCount = 0;
overallHrrError = FL2FXCONST_DBL(0.0f);
isRegionLoudness = FL2FXCONST_DBL(0.0f);
INT startIsSfb = 0;
INT inIsBlock = 0;
INT currentIsSfbCount = 0;
FIXP_DBL overallHrrError = FL2FXCONST_DBL(0.0f);
FIXP_DBL isRegionLoudness = FL2FXCONST_DBL(0.0f);
for (sfb = 0; sfb < maxSfbPerGroup; sfb++) {
if (isMask[sfboffs + sfb] == 1) {
if (currentIsSfbCount == 0) {
startIsSfb = sfboffs + sfb;
}
if (isStartValueFound==0) {
isScaleLast = realIsScale[sfboffs + sfb];
isStartValueFound = 1;
}
inIsBlock = 1;
currentIsSfbCount++;
@ -510,6 +511,14 @@ FDKaacEnc_finalizeIntensityDecision(const FIXP_DBL *hrrErr,
for(j = startIsSfb; j <= sfboffs + sfb; j++) {
isMask[j] = 0;
}
isScaleLast = FL2FXCONST_DBL(0.0f);
isStartValueFound = 0;
for (j=0; j < startIsSfb; j++) {
if (isMask[j]!=0) {
isScaleLast = realIsScale[j];
isStartValueFound = 1;
}
}
}
currentIsSfbCount = 0;
overallHrrError = FL2FXCONST_DBL(0.0f);

2
libAACenc/src/line_pe.cpp
View File

@ -184,7 +184,7 @@ void FDKaacEnc_calcSfbPe(PE_CHANNEL_DATA *RESTRICT peChanData,
}
peChanData->sfbNActiveLines[sfbGrp+sfb] = nLines;
}
else if( isBook[sfb] ) {
else if( isBook[sfbGrp+sfb] ) {
/* provide for cost of scale factor for Intensity */
INT delta = isScale[sfbGrp+sfb] - lastValIs;
lastValIs = isScale[sfbGrp+sfb];