override internal Object look(DspState vd, InfoMode vm, Object vr)
{
InfoResidue0 info = (InfoResidue0)vr;
LookResidue0 look = new LookResidue0();
int acc = 0;
int dim;
int maxstage = 0;
look.info = info;
look.map = vm.mapping;
look.parts = info.partitions;
look.fullbooks = vd.fullbooks;
look.phrasebook = vd.fullbooks[info.groupbook];
dim = look.phrasebook.dim;
look.partbooks = new int[look.parts][];
for (int j = 0; j < look.parts; j++)
{
int i = info.secondstages[j];
int stages = Util.ilog(i);
if (stages != 0)
{
if (stages > maxstage)
{
maxstage = stages;
}
look.partbooks[j] = new int[stages];
for (int k = 0; k < stages; k++)
{
if ((i & (1 << k)) != 0)
{
look.partbooks[j][k] = info.booklist[acc++];
}
}
}
}
look.partvals = (int)Math.Round(Math.Pow(look.parts, dim));
look.stages = maxstage;
look.decodemap = new int[look.partvals][];
for (int j = 0; j < look.partvals; j++)
{
int val = j;
int mult = look.partvals / look.parts;
look.decodemap[j] = new int[dim];
for (int k = 0; k < dim; k++)
{
int deco = val / mult;
val -= deco * mult;
mult /= look.parts;
look.decodemap[j][k] = deco;
}
}
return(look);
}
internal override Object look(DspState vd, InfoMode vm, Object vr)
{
InfoResidue0 info = (InfoResidue0)vr;
LookResidue0 look = new LookResidue0();
int acc = 0;
int dim;
int maxstage = 0;
look.info = info;
look.map = vm.mapping;
look.parts = info.partitions;
look.fullbooks = vd.fullbooks;
look.phrasebook = vd.fullbooks[info.groupbook];
dim = look.phrasebook.dim;
look.partbooks = new int[look.parts][];
for (int j = 0; j < look.parts; j++)
{
int i = info.secondstages[j];
int stages = Util.ilog(i);
if (stages != 0)
{
if (stages > maxstage)
maxstage = stages;
look.partbooks[j] = new int[stages];
for (int k = 0; k < stages; k++)
{
if ((i & (1 << k)) != 0)
{
look.partbooks[j][k] = info.booklist[acc++];
}
}
}
}
look.partvals = (int)Math.Round(Math.Pow(look.parts, dim));
look.stages = maxstage;
look.decodemap = new int[look.partvals][];
for (int j = 0; j < look.partvals; j++)
{
int val = j;
int mult = look.partvals / look.parts;
look.decodemap[j] = new int[dim];
for (int k = 0; k < dim; k++)
{
int deco = val / mult;
val -= deco * mult;
mult /= look.parts;
look.decodemap[j][k] = deco;
}
}
return (look);
}
static internal int _2inverse(Block vb, Object vl, float[][] In, int ch)
{
lock (StatickLock)
{
int i, k, l, s;
LookResidue0 look = (LookResidue0)vl;
InfoResidue0 info = look.info;
// move all this setup out later
int samples_per_partition = info.grouping;
int partitions_per_word = look.phrasebook.dim;
int n = info.end - info.begin;
int partvals = n / samples_per_partition;
int partwords = (partvals + partitions_per_word - 1) / partitions_per_word;
if (_2inverse_partword == null || _2inverse_partword.Length < partwords)
{
_2inverse_partword = new int[partwords][];
}
for (s = 0; s < look.stages; s++)
{
for (i = 0, l = 0; i < partvals; l++)
{
if (s == 0)
{
// fetch the partition word for each channel
int temp = look.phrasebook.decode(vb.opb);
if (temp == -1)
{
return(0);
}
_2inverse_partword[l] = look.decodemap[temp];
if (_2inverse_partword[l] == null)
{
return(0);
}
}
// now we decode residual values for the partitions
for (k = 0; k < partitions_per_word && i < partvals; k++, i++)
{
int offset = info.begin + i * samples_per_partition;
int index = _2inverse_partword[l][k];
if ((info.secondstages[index] & (1 << s)) != 0)
{
CodeBook stagebook = look.fullbooks[look.partbooks[index][s]];
if (stagebook != null)
{
if (stagebook.decodevv_add(In, offset, ch, vb.opb,
samples_per_partition) == -1)
{
return(0);
}
}
}
}
}
}
return(0);
}
}
