void CBlock_ScaleSpectralData(CAacDecoderChannelInfo *pAacDecoderChannelInfo, SamplingRateInfo *pSamplingRateInfo)
{
int band;
int window;
const SHORT * RESTRICT pSfbScale = pAacDecoderChannelInfo->pDynData->aSfbScale;
SHORT * RESTRICT pSpecScale = pAacDecoderChannelInfo->specScale;
int groupwin,group;
const SHORT * RESTRICT BandOffsets = GetScaleFactorBandOffsets(&pAacDecoderChannelInfo->icsInfo, pSamplingRateInfo);
SPECTRAL_PTR RESTRICT pSpectralCoefficient = pAacDecoderChannelInfo->pSpectralCoefficient;
FDKmemclear(pSpecScale, 8*sizeof(SHORT));
int max_band = GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo->icsInfo);
for (window=0, group=0; group < GetWindowGroups(&pAacDecoderChannelInfo->icsInfo); group++)
{
for (groupwin=0; groupwin < GetWindowGroupLength(&pAacDecoderChannelInfo->icsInfo,group); groupwin++, window++)
{
int SpecScale_window = pSpecScale[window];
FIXP_DBL *pSpectrum = SPEC(pSpectralCoefficient, window, pAacDecoderChannelInfo->granuleLength);
/* find scaling for current window */
for (band=0; band < max_band; band++)
{
SpecScale_window = fMax(SpecScale_window, (int)pSfbScale[window*16+band]);
}
if (pAacDecoderChannelInfo->pDynData->TnsData.Active) {
SpecScale_window += TNS_SCALE;
}
/* store scaling of current window */
pSpecScale[window] = SpecScale_window;
#ifdef FUNCTION_CBlock_ScaleSpectralData_func1
CBlock_ScaleSpectralData_func1(pSpectrum, max_band, BandOffsets, SpecScale_window, pSfbScale, window);
#else /* FUNCTION_CBlock_ScaleSpectralData_func1 */
for (band=0; band < max_band; band++)
{
int scale = SpecScale_window - pSfbScale[window*16+band];
if (scale)
{
/* following relation can be used for optimizations: (BandOffsets[i]%4) == 0 for all i */
int max_index = BandOffsets[band+1];
for (int index = BandOffsets[band]; index < max_index; index++)
{
pSpectrum[index] >>= scale;
}
}
}
#endif /* FUNCTION_CBlock_ScaleSpectralData_func1 */
}
}
}
int CShortBlock_ReadSpectralData(HANDLE_BIT_BUF bs,
CAacDecoderChannelInfo *pAacDecoderChannelInfo)
{
int i,index,step;
int window,group,groupwin,groupoffset,band;
int scfExp,scfMod;
int *QuantizedCoef;
char *pCodeBook = pAacDecoderChannelInfo->pCodeBook;
short *pScaleFactor = pAacDecoderChannelInfo->pScaleFactor;
float *pSpectralCoefficient = pAacDecoderChannelInfo->pSpectralCoefficient;
const short *BandOffsets = GetScaleFactorBandOffsets(&pAacDecoderChannelInfo->IcsInfo);
const CodeBookDescription *hcb;
COUNT_sub_start("CShortBlock_ReadSpectralData");
QuantizedCoef = (int*)pSpectralCoefficient;
PTR_INIT(5); INDIRECT(4); FUNC(1); /* counting previous operations */
LOOP(1);
for (window=0; window < MaximumWindows; window++)
{
PTR_INIT(1); /* pointer for QuantizedCoef[] */
LOOP(1);
for (index=0; index < MaximumBinsShort; index++) {
MOVE(1);
QuantizedCoef[window*MaximumBinsShort+index] = 0;
}
}
MOVE(1);
groupoffset = 0;
INDIRECT(1); FUNC(1); LOOP(1);
for (group=0; group < GetWindowGroups(&pAacDecoderChannelInfo->IcsInfo); group++)
{
PTR_INIT(1); /* pointer for pCodeBook[] */
INDIRECT(1); FUNC(1); LOOP(1);
for (band=0; band < GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo->IcsInfo); band++)
{
PTR_INIT(1);
hcb = &HuffmanCodeBooks[pCodeBook[group*MaximumScaleFactorBandsShort+band]];
INDIRECT(1); FUNC(1); LOOP(1);
for (groupwin=0; groupwin < GetWindowGroupLength(&pAacDecoderChannelInfo->IcsInfo,group); groupwin++)
{
ADD(1);
window = groupoffset + groupwin;
ADD(4); LOGIC(3); BRANCH(1);
if ( (pCodeBook[group*MaximumScaleFactorBandsShort+band] == ZERO_HCB)
||(pCodeBook[group*MaximumScaleFactorBandsShort+band] == INTENSITY_HCB)
||(pCodeBook[group*MaximumScaleFactorBandsShort+band] == INTENSITY_HCB2)
||(pCodeBook[group*MaximumScaleFactorBandsShort+band] == NOISE_HCB))
continue;
MOVE(1);
step = 0 ;
PTR_INIT(2); /* pointer for BandOffsets[],
QuantizedCoef[] */
LOOP(1);
for (index=BandOffsets[band]; index < BandOffsets[band+1]; index+=step)
{
INDIRECT(1); FUNC(2); PTR_INIT(1); FUNC(3);
step = CBlock_UnpackIndex(CBlock_DecodeHuffmanWord(bs,hcb->CodeBook),&QuantizedCoef[window*MaximumBinsShort+index],hcb);
INDIRECT(1); BRANCH(1);
if (hcb->Offset == 0)
{
PTR_INIT(1); /* pointer for QuantizedCoef[] */
LOOP(1);
for (i=0; i < step; i++)
{
BRANCH(1);
if (QuantizedCoef[window*MaximumBinsShort+index+i])
{
FUNC(2);
if (GetBits(bs,1)) /* sign bit */
{
MULT(1); STORE(1);
QuantizedCoef [window*MaximumBinsShort+index+i] = -QuantizedCoef [window*MaximumBinsShort+index+i];
}
}
}
}
ADD(1); BRANCH(1);
if (pCodeBook[group*MaximumScaleFactorBandsShort+band] == ESCBOOK)
{
FUNC(2); STORE(1);
QuantizedCoef[window*MaximumBinsShort+index] = CBlock_GetEscape(bs,QuantizedCoef[window*MaximumBinsShort+index]);
FUNC(2); STORE(1);
QuantizedCoef[window*MaximumBinsShort+index+1] = CBlock_GetEscape(bs,QuantizedCoef[window*MaximumBinsShort+index+1]);
FUNC(1); FUNC(1); ADD(2); LOGIC(1); BRANCH(1);
if (abs(QuantizedCoef[window*MaximumBinsShort+index]) > MAX_QUANTIZED_VALUE || abs(QuantizedCoef[window*MaximumBinsShort+index+1]) > MAX_QUANTIZED_VALUE) {
COUNT_sub_end();
return (AAC_DEC_DECODE_FRAME_ERROR);
}
}
}
}
}
INDIRECT(1); ADD(1);
groupoffset += GetWindowGroupLength(&pAacDecoderChannelInfo->IcsInfo,group);
}
INDIRECT(1); FUNC(1); LOOP(1);
for (window=0, group=0; group < GetWindowGroups(&pAacDecoderChannelInfo->IcsInfo); group++)
{
INDIRECT(1); FUNC(1); LOOP(1);
for (groupwin=0; groupwin < GetWindowGroupLength(&pAacDecoderChannelInfo->IcsInfo,group); groupwin++, window++)
{
MOVE(1);
index = 0;
PTR_INIT(2); /* pointer for BandOffsets[],
pScaleFactor */
INDIRECT(1); FUNC(1); LOOP(1) ;
/* quantize & apply scalefactors */
for (band=0; band < GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo->IcsInfo); band++)
{
/* scalefactor exponents and scalefactor mantissa for current band */
SHIFT(1);
scfExp = pScaleFactor[group*MaximumScaleFactorBandsShort+band] >> 2;
LOGIC(1);
scfMod = pScaleFactor[group*MaximumScaleFactorBandsShort+band] & 3;
PTR_INIT(2); /* pointer for QuantizedCoef[],
pSpectralCoefficient */
LOOP(1);
for (index=BandOffsets[band]; index < BandOffsets[band+1] ;index++)
{
ADD(1); FUNC(3); STORE(1);
pSpectralCoefficient[window*MaximumBinsShort+index] = CBlock_Quantize(QuantizedCoef[window*MaximumBinsShort+index],scfMod,scfExp-6);
}
}
PTR_INIT(1); /* pointer for pSpectralCoefficient */
LOOP(1);
for (; index < MaximumBinsShort; index++) {
MOVE(1);
pSpectralCoefficient[window*MaximumBinsShort+index] = 0.0;
}
}
}
COUNT_sub_end();
return (AAC_DEC_OK);
}
