public void decode(BitStream inStream, ICSInfo info, Profile profile)
{
lag = 0;
if (profile.type == Profile.ProfileType.AAC_LD)
{
lagUpdate = inStream.readBool();
if (lagUpdate)
{
lag = inStream.readBits(10);
}
}
else
{
lag = inStream.readBits(11);
}
if (lag > (frameLength << 1))
{
throw new AACException("LTP lag too large: " + lag);
}
coef = inStream.readBits(3);
int windowCount = info.getWindowCount();
if (info.isEightShortFrame())
{
shortUsed = new bool[windowCount];
shortLagPresent = new bool[windowCount];
shortLag = new int[windowCount];
for (int w = 0; w < windowCount; w++)
{
if (shortUsed[w] = inStream.readBool())
{
shortLagPresent[w] = inStream.readBool();
if (shortLagPresent[w])
{
shortLag[w] = inStream.readBits(4);
}
}
}
}
else
{
lastBand = Math.Min(info.getMaxSFB(), MAX_LTP_SFB);
longUsed = new bool[lastBand];
for (int i = 0; i < lastBand; i++)
{
longUsed[i] = inStream.readBool();
}
}
}
// /* ========= decoding ========== */
public void decode(BitStream inStream, bool commonWindow, DecoderConfig conf)
{
if (conf.isScalefactorResilienceUsed() && rvlc == null)
{
rvlc = new RVLC();
}
bool er = conf.getProfile().isErrorResilientProfile();
globalGain = inStream.readBits(8);
if (!commonWindow)
{
info.decode(inStream, conf, commonWindow);
}
decodeSectionData(inStream, conf.isSectionDataResilienceUsed());
//if(conf.isScalefactorResilienceUsed()) rvlc.decode(in, this, scaleFactors);
/*else*/
decodeScaleFactors(inStream);
pulseDataPresent = inStream.readBool();
if (pulseDataPresent)
{
if (info.isEightShortFrame())
{
throw new AACException("pulse data not allowed for short frames");
}
Logger.LogInfo("PULSE");
throw new NotImplementedException();
//decodePulseData(inStream);
}
tnsDataPresent = inStream.readBool();
if (tnsDataPresent && !er)
{
if (tns == null)
{
tns = new TNS();
}
tns.decode(inStream, info);
}
gainControlPresent = inStream.readBool();
if (gainControlPresent)
{
if (gainControl == null)
{
gainControl = new GainControl(frameLength);
}
Logger.LogInfo("GAIN");
throw new NotImplementedException();
// gainControl.decode(inStream, info.getWindowSequence());
}
//RVLC spectral data
//if(conf.isScalefactorResilienceUsed()) rvlc.decodeScalefactors(this, in, scaleFactors);
if (conf.isSpectralDataResilienceUsed())
{
int max = (conf.getChannelConfiguration() == ChannelConfiguration.CHANNEL_CONFIG_STEREO) ? 6144 : 12288;
reorderedSpectralDataLen = Math.Max(inStream.readBits(14), max);
longestCodewordLen = Math.Max(inStream.readBits(6), 49);
//HCR.decodeReorderedSpectralData(this, in, data, conf.isSectionDataResilienceUsed());
}
else
{
decodeSpectralData(inStream);
}
}
