Element decodeCPE(BitStream inStream)
{
if (elements[curElem] == null)
{
elements[curElem] = new CPE(config.getFrameLength());
}
((CPE)elements[curElem]).decode(inStream, config);
curElem++;
return(elements[curElem - 1]);
}
//private int processSingle(SCE_LFE scelfe, FilterBank filterBank, int channel, Profile profile, SampleFrequency sf) throws AACException {
//ICStream ics = scelfe.getICStream();
//ICSInfo info = ics.getInfo();
//LTPrediction ltp = info.getLTPrediction1();
//int elementID = scelfe.getElementInstanceTag();
////inverse quantization
//float[] iqData = ics.getInvQuantData();
////prediction
//if(profile.equals(Profile.AAC_MAIN)&&info.isICPredictionPresent()) info.getICPrediction().process(ics, iqData, sf);
//if(LTPrediction.isLTPProfile(profile)&&info.isLTPrediction1Present()) ltp.process(ics, iqData, filterBank, sf);
////dependent coupling
//processDependentCoupling(false, elementID, CCE.BEFORE_TNS, iqData, null);
////TNS
//if(ics.isTNSDataPresent()) ics.getTNS().process(ics, iqData, sf, false);
////dependent coupling
//processDependentCoupling(false, elementID, CCE.AFTER_TNS, iqData, null);
////filterbank
//filterBank.process(info.getWindowSequence(), info.getWindowShape(ICSInfo.CURRENT), info.getWindowShape(ICSInfo.PREVIOUS), iqData, data[channel], channel);
//if(LTPrediction.isLTPProfile(profile)) ltp.updateState(data[channel], filterBank.getOverlap(channel), profile);
////dependent coupling
//processIndependentCoupling(false, elementID, data[channel], null);
////gain control
//if(ics.isGainControlPresent()) ics.getGainControl().process(iqData, info.getWindowShape(ICSInfo.CURRENT), info.getWindowShape(ICSInfo.PREVIOUS), info.getWindowSequence());
////SBR
//int chs = 1;
//if(sbrPresent&&config.isSBREnabled()) {
//if(data[channel].Length==config.getFrameLength()) LOGGER.log(Level.WARNING, "SBR data present, but buffer has normal size!");
//SBR sbr = scelfe.getSBR();
//if(sbr.isPSUsed()) {
//chs = 2;
//scelfe.getSBR().process(data[channel], data[channel+1], false);
//}
//else scelfe.getSBR().process(data[channel], false);
//}
//return chs;
//}
void processPair(CPE cpe, FilterBank filterBank, int channel, Profile profile, SampleFrequency sf)
{
var ics1 = cpe.getLeftChannel();
var ics2 = cpe.getRightChannel();
var info1 = ics1.getInfo();
var info2 = ics2.getInfo();
var ltp1 = info1.getLTPrediction1();
var ltp2 = cpe.isCommonWindow() ? info1.getLTPrediction2() : info2.getLTPrediction1();
int elementID = cpe.getElementInstanceTag();
// inverse quantization
var iqData1 = ics1.getInvQuantData();
var iqData2 = ics2.getInvQuantData();
// MS
if (cpe.isCommonWindow() && cpe.isMSMaskPresent())
{
MS.process(cpe, iqData1, iqData2);
}
// main prediction
if (profile.type == Profile.ProfileType.AAC_MAIN)
{
if (info1.isICPredictionPresent())
{
throw new NotImplementedException();
// info1.getICPrediction().process(ics1, iqData1, sf);
}
if (info2.isICPredictionPresent())
{
throw new NotImplementedException();
// info2.getICPrediction().process(ics2, iqData2, sf);
}
}
// IS
IS.process(cpe, iqData1, iqData2);
// LTP
if (LTPrediction.isLTPProfile(profile))
{
if (info1.isLTPrediction1Present())
{
ltp1.process(ics1, iqData1, filterBank, sf);
}
if (cpe.isCommonWindow() && info1.isLTPrediction2Present())
{
ltp2.process(ics2, iqData2, filterBank, sf);
}
else if (info2.isLTPrediction1Present())
{
ltp2.process(ics2, iqData2, filterBank, sf);
}
}
// dependent coupling
processDependentCoupling(true, elementID, CCE.BEFORE_TNS, iqData1, iqData2);
// TNS
if (ics1.isTNSDataPresent())
{
ics1.getTNS().process(ics1, iqData1, sf, false);
}
if (ics2.isTNSDataPresent())
{
ics2.getTNS().process(ics2, iqData2, sf, false);
}
// dependent coupling
processDependentCoupling(true, elementID, CCE.AFTER_TNS, iqData1, iqData2);
// filterbank
filterBank.process(info1.getWindowSequence(), info1.getWindowShape(ICSInfo.CURRENT), info1.getWindowShape(ICSInfo.PREVIOUS), iqData1, data[channel], channel);
filterBank.process(info2.getWindowSequence(), info2.getWindowShape(ICSInfo.CURRENT), info2.getWindowShape(ICSInfo.PREVIOUS), iqData2, data[channel + 1], channel + 1);
if (LTPrediction.isLTPProfile(profile))
{
ltp1.updateState(data[channel], filterBank.getOverlap(channel), profile);
ltp2.updateState(data[channel + 1], filterBank.getOverlap(channel + 1), profile);
}
// independent coupling
processIndependentCoupling(true, elementID, data[channel], data[channel + 1]);
// gain control
if (ics1.isGainControlPresent())
{
ics1.getGainControl().process(iqData1, info1.getWindowShape(ICSInfo.CURRENT), info1.getWindowShape(ICSInfo.PREVIOUS), info1.getWindowSequence());
}
if (ics2.isGainControlPresent())
{
ics2.getGainControl().process(iqData2, info2.getWindowShape(ICSInfo.CURRENT), info2.getWindowShape(ICSInfo.PREVIOUS), info2.getWindowSequence());
}
//SBR
if (sbrPresent && config.isSBREnabled())
{
if (data[channel].Length == config.getFrameLength())
{
Logger.LogServe("SBR data present, but buffer has normal size!");
}
cpe.getSBR().process(data[channel], data[channel + 1], false);
}
}