private void WriteAncillaryData(byte[] theData, int lengthInBits)
{
int bytesToSend = lengthInBits / 8;
int remainingBits = lengthInBits % 8;
int wrd;
userFrameDataPH.Position = 0;
for (int i = 0; i < bytesToSend; i++)
{
wrd = theData[i];
userFrameDataPH.Add(wrd, 8);
}
if (remainingBits != 0)
{
wrd = theData[bytesToSend] >> (8 - remainingBits);
userFrameDataPH.Add(wrd, remainingBits);
}
}
private void EncodeSideInfo(ref SideInfo l3_side, ref FrameParams fr_ps)
{
int bits_sent, mode_gr = 2;
headerPH.Position = 0;
headerPH.Add(4095, 12);
headerPH.Add(1, 1);
headerPH.Add(1, 2);
headerPH.Add(fr_ps.Header.ErrorProtection, 1);
headerPH.Add(fr_ps.Header.BitrateIndex, 4);
headerPH.Add(fr_ps.Header.SamplingFrequency, 2);
headerPH.Add(fr_ps.Header.Padding, 1);
headerPH.Add(fr_ps.Header.Extension, 1);
headerPH.Add(fr_ps.Header.Mode, 2);
headerPH.Add(fr_ps.Header.ModeExt, 2);
headerPH.Add(fr_ps.Header.Copyright, 1);
headerPH.Add(fr_ps.Header.Original, 1);
headerPH.Add(fr_ps.Header.Emphasis, 2);
bits_sent = 32;
frameSIPH.Position = 0;
for (int ch = 0; ch < fr_ps.Chn; ch++)
{
channelSIPH[ch].Position = 0;
}
for (int gr = 0; gr < 2; gr++)
{
for (int ch = 0; ch < fr_ps.Chn; ch++)
{
spectrumSIPH[ch, gr].Position = 0;
}
}
if (fr_ps.Header.ErrorProtection == 0)
{
headerPH.Add(0, 16);
bits_sent += 16;
}
frameSIPH.Add(l3_side.MainDataBegin, 9);
if (fr_ps.Chn == 2)
{
frameSIPH.Add(l3_side.PrivateBits, 3);
}
else
{
frameSIPH.Add(l3_side.PrivateBits, 5);
}
for (int ch = 0; ch < fr_ps.Chn; ch++)
{
for (int scfsi_band = 0; scfsi_band < 4; scfsi_band++)
{
channelSIPH[ch].Add(l3_side.Scfsi[ch, scfsi_band], 1);
}
}
for (int gr = 0; gr < mode_gr; gr++)
{
for (int ch = 0; ch < fr_ps.Chn; ch++)
{
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].Part23Length, 12);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].BigValues, 9);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].GlobalGain, 8);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].ScalefacCompress, 4);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].WindowSwitchingFlag, 1);
if (l3_side.TT[ch, gr].WindowSwitchingFlag != 0)
{
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].BlockType, 2);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].MixedBlockFlag, 1);
for (int region = 0; region < 2; region++)
{
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].TableSelect[region], 5);
}
for (int window = 0; window < 3; window++)
{
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].SubblockGain[window], 3);
}
}
else
{
for (int region = 0; region < 3; region++)
{
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].TableSelect[region], 5);
}
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].Region0Count, 4);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].Region1Count, 3);
}
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].Preflag, 1);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].ScalefacScale, 1);
spectrumSIPH[ch, gr].Add(l3_side.TT[ch, gr].Count1tableSelect, 1);
}
}
if (fr_ps.Chn == 2)
{
bits_sent += 256;
}
else
{
bits_sent += 136;
}
}