public sealed override void Quant(float[] lsp, float[] qlsp, int order, Bits bits)
{
float[] array = new float[20];
for (int i = 0; i < order; i++)
{
qlsp[i] = lsp[i];
}
array[0] = 1f / (qlsp[1] - qlsp[0]);
array[order - 1] = 1f / (qlsp[order - 1] - qlsp[order - 2]);
for (int i = 1; i < order - 1; i++)
{
float num = 1f / ((0.15f + qlsp[i] - qlsp[i - 1]) * (0.15f + qlsp[i] - qlsp[i - 1]));
float num2 = 1f / ((0.15f + qlsp[i + 1] - qlsp[i]) * (0.15f + qlsp[i + 1] - qlsp[i]));
array[i] = ((num > num2) ? num : num2);
}
for (int i = 0; i < order; i++)
{
qlsp[i] -= new float?((float)(0.25 * (double)i + 0.25)).Value;
}
for (int i = 0; i < order; i++)
{
qlsp[i] *= 256f;
}
int data = LspQuant.Lsp_quant(qlsp, 0, Codebook_Constants.cdbk_nb, 64, order);
bits.Pack(data, 6);
for (int i = 0; i < order; i++)
{
qlsp[i] *= 2f;
}
data = LspQuant.Lsp_weight_quant(qlsp, 0, array, 0, Codebook_Constants.cdbk_nb_low1, 64, 5);
bits.Pack(data, 6);
for (int i = 0; i < 5; i++)
{
qlsp[i] *= 2f;
}
data = LspQuant.Lsp_weight_quant(qlsp, 0, array, 0, Codebook_Constants.cdbk_nb_low2, 64, 5);
bits.Pack(data, 6);
data = LspQuant.Lsp_weight_quant(qlsp, 5, array, 5, Codebook_Constants.cdbk_nb_high1, 64, 5);
bits.Pack(data, 6);
for (int i = 5; i < 10; i++)
{
qlsp[i] *= 2f;
}
data = LspQuant.Lsp_weight_quant(qlsp, 5, array, 5, Codebook_Constants.cdbk_nb_high2, 64, 5);
bits.Pack(data, 6);
for (int i = 0; i < order; i++)
{
qlsp[i] *= new float?(0.00097656f).Value;
}
for (int i = 0; i < order; i++)
{
qlsp[i] = lsp[i] - qlsp[i];
}
}
public SubMode(int lbrPitch, int forcedPitchGain, int haveSubframeGain, int doubleCodebook, LspQuant lspQuant, Ltp ltp, CodebookSearch innovation, float lpcEnhK1, float lpcEnhK2, float combGain, int bitsPerFrame)
{
this.lbrPitch = lbrPitch;
this.forcedPitchGain = forcedPitchGain;
this.haveSubframeGain = haveSubframeGain;
this.doubleCodebook = doubleCodebook;
this.lsqQuant = lspQuant;
this.ltp = ltp;
this.innovation = innovation;
this.lpcEnhK1 = lpcEnhK1;
this.lpcEnhK2 = lpcEnhK2;
this.combGain = combGain;
this.bitsPerFrame = bitsPerFrame;
}
public sealed override void Quant(float[] lsp, float[] qlsp, int order, Bits bits)
{
float[] array = new float[20];
for (int i = 0; i < order; i++)
{
qlsp[i] = lsp[i];
}
array[0] = 1f / (qlsp[1] - qlsp[0]);
array[order - 1] = 1f / (qlsp[order - 1] - qlsp[order - 2]);
for (int i = 1; i < order - 1; i++)
{
array[i] = Math.Max(1f / (qlsp[i] - qlsp[i - 1]), 1f / (qlsp[i + 1] - qlsp[i]));
}
for (int i = 0; i < order; i++)
{
qlsp[i] -= 0.3125f * (float)i + 0.75f;
}
for (int i = 0; i < order; i++)
{
qlsp[i] *= 256f;
}
int data = LspQuant.Lsp_quant(qlsp, 0, Codebook_Constants.high_lsp_cdbk, 64, order);
bits.Pack(data, 6);
for (int i = 0; i < order; i++)
{
qlsp[i] *= 2f;
}
data = LspQuant.Lsp_weight_quant(qlsp, 0, array, 0, Codebook_Constants.high_lsp_cdbk2, 64, order);
bits.Pack(data, 6);
for (int i = 0; i < order; i++)
{
qlsp[i] *= 0.0019531f;
}
for (int i = 0; i < order; i++)
{
qlsp[i] = lsp[i] - qlsp[i];
}
}
