public FormatBitStream()
{
huf = new Huffman();
huf.ReadHuffCodeTab();
headerPH = new BitData(32);
frameSIPH = new BitData(8);
userFrameDataPH = new BitData(16);
channelSIPH = new BitData[2];
spectrumSIPH = new BitData[2, 2];
scaleFactorsPH = new BitData[2, 2];
codedDataPH = new BitData[2, 2];
userSpectrumPH = new BitData[2, 2];
for (int ch = 0; ch < 2; ch++)
{
channelSIPH[ch] = new BitData(16);
for (int gr = 0; gr < 2; gr++)
{
spectrumSIPH[ch, gr] = new BitData(64);
scaleFactorsPH[ch, gr] = new BitData(128);
codedDataPH[ch, gr] = new BitData(1152);
userSpectrumPH[ch, gr] = new BitData(8);
}
}
}
private void WriteBitData(BitData part, byte[] data, ref int pos)
{
for (int i = 0; i < part.Position; i++)
{
PutBits(part.Data[i].Value, part.Data[i].Size, data, ref pos);
}
}
public FrameData(int frameLength, int nGranules, int nChannels, BitData header, BitData frameSI, BitData[] channelSI, BitData[,] spectrumSI, BitData[,] scaleFactors, BitData[,] codedData, BitData[,] userSpectrum, BitData userFrameData)
{
FrameLength = frameLength;
NGranules = nGranules;
NChannels = nChannels;
Header = header;
FrameSI = frameSI;
ChannelSI = channelSI;
SpectrumSI = spectrumSI;
ScaleFactors = scaleFactors;
CodedData = codedData;
UserSpectrum = userSpectrum;
UserFrameData = userFrameData;
}
private int WriteMainDataBits(BitData psBH, byte[] data)
{
int bits = 0;
int val;
int nBits;
int a = 0;
if (BitsRemaining == 679)
{
a = 1;
}
for (int i = 0; i < psBH.Position; i++)
{
val = psBH.Data[i].Value;
nBits = psBH.Data[i].Size;
if (BitsRemaining == 0)
{
BitsRemaining = WriteHeader();
}
if (nBits > BitsRemaining)
{
nBits -= BitsRemaining;
PutBits(val >> nBits, BitsRemaining, data, ref position);
BitsRemaining = WriteHeader();
PutBits(val, nBits, data, ref position);
}
else
{
PutBits(val, nBits, data, ref position);
}
BitsRemaining -= nBits;
bits += psBH.Data[i].Size;
}
return(bits);
}
