internal static int _2inverse(Block vb, Object vl, float[][] fin, int ch)
{
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;
int[][] 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)
{
// goto eopbreak;
return(0);
}
partword[l] = look.decodemap[temp];
if (partword[l] == null)
{
// goto errout;
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;
if ((info.secondstages[partword[l][k]] & (1 << s)) != 0)
{
CodeBook stagebook = look.fullbooks[look.partbooks[partword[l][k]][s]];
if (stagebook != null)
{
if (stagebook.decodevv_add(fin, offset, ch, vb.opb, samples_per_partition) == -1)
{
// goto errout;
return(0);
}
}
}
}
}
}
// errout:
// eopbreak:
return(0);
}
public override Object look(DspState vd, InfoMode vm, Object vr)
{
InfoResidue0 info = (InfoResidue0)vr;
LookResidue0 look = new LookResidue0();
int acc = 0;
int maxstage = 0;
look.info = info;
look.map = vm.mapping;
look.parts = info.partitions;
look.fullbooks = vd.fullbooks;
look.phrasebook = vd.fullbooks[info.groupbook];
int dim = look.phrasebook.dim;
look.partbooks = new int[look.parts][];
for (int j = 0; j < look.parts; j++)
{
int stages = Util.ilog(info.secondstages[j]);
if (stages != 0)
{
if (stages > maxstage)
{
maxstage = stages;
}
look.partbooks[j] = new int[stages];
for (int k = 0; k < stages; k++)
{
if ((info.secondstages[j] & (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 int _01inverse(Block vb, Object vl, float[][] fin, int ch, int decodepart)
{
int i, j, 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 (partword.Length < ch)
{
partword = new int[ch][][];
for (j = 0; j < ch; j++)
{
partword[j] = new int[partwords][];
}
}
else
{
for (j = 0; j < ch; j++)
{
if (partword[j] == null || partword[j].Length < partwords)
{
partword[j] = new int[partwords][];
}
}
}
for (s = 0; s < look.stages; s++)
{
// each loop decodes on partition codeword containing
// partitions_pre_word partitions
for (i = 0, l = 0; i < partvals; l++)
{
if (s == 0)
{
// fetch the partition word for each channel
for (j = 0; j < ch; j++)
{
int temp = look.phrasebook.decode(vb.opb);
partword[j][l] = look.decodemap[temp];
}
}
// now we decode residual values for the partitions
for (k = 0; k < partitions_per_word && i < partvals; k++, i++)
{
for (j = 0; j < ch; j++)
{
int offset = info.begin + i * samples_per_partition;
if ((info.secondstages[partword[j][l][k]] & (1 << s)) != 0)
{
CodeBook stagebook = look.fullbooks[look.partbooks[partword[j][l][k]][s]];
if (stagebook != null)
{
if (decodepart == 0)
{
stagebook.decodevs_add(fin[j], offset, vb.opb, samples_per_partition);
}
else if (decodepart == 1)
{
stagebook.decodev_add(fin[j], offset, vb.opb, samples_per_partition);
}
}
}
}
}
}
}
return(0);
}
public 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 stages=ilog(info.secondstages[j]);
if(stages!=0)
{
if(stages>maxstage)maxstage=stages;
look.partbooks[j]=new int[stages];
for(int k=0; k<stages; k++)
{
if((info.secondstages[j]&(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);
}
