override internal int inverse2(Block vb, Object i, Object memo, float[] Out)
{
LookFloor0 look = (LookFloor0)i;
InfoFloor0 info = look.vi;
if (memo != null)
{
float[] lsp = (float[])memo;
float amp = lsp[look.m];
Lsp.lsp_to_curve(Out, look.linearmap, look.n, look.ln, lsp, look.m, amp, info.ampdB);
return(1);
}
for (int j = 0; j < look.n; j++)
{
Out[j] = 0.0f;
}
return(0);
}
internal int inverse(Block vb, Object i, float[] Out)
{
//System.err.println("Floor0.inverse "+i.getClass()+"]");
LookFloor0 look = (LookFloor0)i;
InfoFloor0 info = look.vi;
int ampraw = vb.opb.Read(info.ampbits);
if (ampraw > 0)
{ // also handles the -1 out of data case
int maxval = (1 << info.ampbits) - 1;
float amp = (float)ampraw / maxval * info.ampdB;
int booknum = vb.opb.Read(Util.ilog(info.numbooks));
if (booknum != -1 && booknum < info.numbooks)
{
lock (this)
{
if (lsp == null || lsp.Length < look.m)
{
lsp = new float[look.m];
}
else
{
for (int j = 0; j < look.m; j++)
{
lsp[j] = 0.0f;
}
}
CodeBook b = vb.vd.fullbooks[info.books[booknum]];
float last = 0.0f;
for (int j = 0; j < look.m; j++)
{
Out[j] = 0.0f;
}
for (int j = 0; j < look.m; j += b.dim)
{
if (b.decodevs(lsp, j, vb.opb, 1, -1) == -1)
{
for (int k = 0; k < look.n; k++)
{
Out[k] = 0.0f;
}
return(0);
}
}
for (int j = 0; j < look.m;)
{
for (int k = 0; k < b.dim; k++, j++)
{
lsp[j] += last;
}
last = lsp[j - 1];
}
// take the coefficients back to a spectral envelope curve
Lsp.lsp_to_curve(Out, look.linearmap, look.n, look.ln, lsp, look.m,
amp, info.ampdB);
return(1);
}
}
}
return(0);
}
