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);
}
void init(Info vi)
{
this.vi = vi;
modebits = VUtils.ilog2(vi.modes);
transform[0] = new Mdct();
transform[1] = new Mdct();
((Mdct)transform[0]).init(vi.blocksizes[0]);
((Mdct)transform[1]).init(vi.blocksizes[1]);
wnd[0][0][0] = window(vi.blocksizes[0], vi.blocksizes[0] / 2, vi.blocksizes[0] / 2);
wnd[1][0][0] = window(vi.blocksizes[1], vi.blocksizes[0] / 2, vi.blocksizes[0] / 2);
wnd[1][0][1] = window(vi.blocksizes[1], vi.blocksizes[0] / 2, vi.blocksizes[1] / 2);
wnd[1][1][0] = window(vi.blocksizes[1], vi.blocksizes[1] / 2, vi.blocksizes[0] / 2);
wnd[1][1][1] = window(vi.blocksizes[1], vi.blocksizes[1] / 2, vi.blocksizes[1] / 2);
fullbooks = new CodeBook[vi.books];
for (int i = 0; i < vi.books; i++)
{
fullbooks[i] = new CodeBook();
fullbooks[i].init_decode(vi.book_param[i]);
}
// initialize the storage vectors to a decent size greater than the minimum
pcm_storage = 8192; // we'll assume later that we have a minimum of twice
// the blocksize of accumulated samples in analysis
pcm = new float[vi.channels][];
for (int i = 0; i < vi.channels; i++)
{
pcm[i] = new float[pcm_storage];
}
// all 1 (large block) or 0 (small block)
// explicitly set for the sake of clarity
lW = 0; // previous window size
W = 0; // current window size
// all vector indexes; multiples of samples_per_envelope_step
centerW = vi.blocksizes[1] / 2;
pcm_current = centerW;
// initialize all the mapping/backend lookups
mode = new Object[vi.modes];
for (int i = 0; i < vi.modes; i++)
{
int mapnum = vi.mode_param[i].mapping;
FuncMapping mapping = vi.map_funcs[mapnum];
mode[i] = mapping.look(this, vi.mode_param[i], vi.map_param[mapnum]);
}
}
// Analysis side code, but directly related to blocking. Thus it's
// here and not in analysis.c (which is for analysis transforms only).
// The init is here because some of it is shared
int init(Info vi, bool encp)
{
//memset(v,0,sizeof(vorbis_dsp_state));
this.vi=vi;
modebits=ilog2(vi.modes);
transform[0]=new Object[VI_TRANSFORMB];
transform[1]=new Object[VI_TRANSFORMB];
// MDCT is tranform 0
transform[0][0]=new Mdct();
transform[1][0]=new Mdct();
((Mdct)transform[0][0]).init(vi.blocksizes[0]);
((Mdct)transform[1][0]).init(vi.blocksizes[1]);
wnd[0][0][0]=new float[VI_WINDOWB][];
wnd[0][0][1]=wnd[0][0][0];
wnd[0][1][0]=wnd[0][0][0];
wnd[0][1][1]=wnd[0][0][0];
wnd[1][0][0]=new float[VI_WINDOWB][];
wnd[1][0][1]=new float[VI_WINDOWB][];
wnd[1][1][0]=new float[VI_WINDOWB][];
wnd[1][1][1]=new float[VI_WINDOWB][];
for(int i=0;i<VI_WINDOWB;i++)
{
wnd[0][0][0][i]=
window(i,vi.blocksizes[0],vi.blocksizes[0]/2,vi.blocksizes[0]/2);
wnd[1][0][0][i]=
window(i,vi.blocksizes[1],vi.blocksizes[0]/2,vi.blocksizes[0]/2);
wnd[1][0][1][i]=
window(i,vi.blocksizes[1],vi.blocksizes[0]/2,vi.blocksizes[1]/2);
wnd[1][1][0][i]=
window(i,vi.blocksizes[1],vi.blocksizes[1]/2,vi.blocksizes[0]/2);
wnd[1][1][1][i]=
window(i,vi.blocksizes[1],vi.blocksizes[1]/2,vi.blocksizes[1]/2);
}
// if(encp){ // encode/decode differ here
// // finish the codebooks
// fullbooks=new CodeBook[vi.books];
// for(int i=0;i<vi.books;i++){
// fullbooks[i]=new CodeBook();
// fullbooks[i].init_encode(vi.book_param[i]);
// }
// analysisp=1;
// }
// else{
// finish the codebooks
fullbooks=new CodeBook[vi.books];
for(int i=0;i<vi.books;i++)
{
fullbooks[i]=new CodeBook();
fullbooks[i].init_decode(vi.book_param[i]);
}
// }
// initialize the storage vectors to a decent size greater than the
// minimum
pcm_storage=8192; // we'll assume later that we have
// a minimum of twice the blocksize of
// accumulated samples in analysis
pcm=new float[vi.channels][];
//pcmret=new float[vi.channels][];
{
for(int i=0;i<vi.channels;i++)
{
pcm[i]=new float[pcm_storage];
}
}
// all 1 (large block) or 0 (small block)
// explicitly set for the sake of clarity
lW=0; // previous window size
W=0; // current window size
// all vector indexes; multiples of samples_per_envelope_step
centerW=vi.blocksizes[1]/2;
pcm_current=centerW;
// initialize all the mapping/backend lookups
mode=new Object[vi.modes];
for(int i=0;i<vi.modes;i++)
{
int mapnum=vi.mode_param[i].mapping;
int maptype=vi.map_type[mapnum];
mode[i]=FuncMapping.mapping_P[maptype].look(this,vi.mode_param[i],
vi.map_param[mapnum]);
}
return(0);
}
// Analysis side code, but directly related to blocking. Thus it's
// here and not in analysis.c (which is for analysis transforms only).
// The init is here because some of it is shared
private int init(Info vi, bool encp)
{
this.vi = vi;
modebits = Util.ilog2(vi.modes);
transform[0] = new Object[VI_TRANSFORMB];
transform[1] = new Object[VI_TRANSFORMB];
// MDCT is tranform 0
transform[0][0] = new Mdct();
transform[1][0] = new Mdct();
((Mdct)transform[0][0]).init(vi.blocksizes[0]);
((Mdct)transform[1][0]).init(vi.blocksizes[1]);
wnd[0][0][0] = new float[VI_WINDOWB][];
wnd[0][0][1] = wnd[0][0][0];
wnd[0][1][0] = wnd[0][0][0];
wnd[0][1][1] = wnd[0][0][0];
wnd[1][0][0] = new float[VI_WINDOWB][];
wnd[1][0][1] = new float[VI_WINDOWB][];
wnd[1][1][0] = new float[VI_WINDOWB][];
wnd[1][1][1] = new float[VI_WINDOWB][];
for (int i = 0; i < VI_WINDOWB; i++)
{
wnd[0][0][0][i] = window(i, vi.blocksizes[0], vi.blocksizes[0] / 2, vi.blocksizes[0] / 2);
wnd[1][0][0][i] = window(i, vi.blocksizes[1], vi.blocksizes[0] / 2, vi.blocksizes[0] / 2);
wnd[1][0][1][i] = window(i, vi.blocksizes[1], vi.blocksizes[0] / 2, vi.blocksizes[1] / 2);
wnd[1][1][0][i] = window(i, vi.blocksizes[1], vi.blocksizes[1] / 2, vi.blocksizes[0] / 2);
wnd[1][1][1][i] = window(i, vi.blocksizes[1], vi.blocksizes[1] / 2, vi.blocksizes[1] / 2);
}
// finish the codebooks
fullbooks = new CodeBook[vi.books];
for (int i = 0; i < vi.books; i++)
{
fullbooks[i] = new CodeBook();
fullbooks[i].init_decode(vi.book_param[i]);
}
// initialize the storage vectors to a decent size greater than the minimum
pcm_storage = 8192; // we'll assume later that we have
// a minimum of twice the blocksize of
// accumulated samples in analysis
pcm = new float[vi.Channels][];
for (int i = 0; i < vi.Channels; i++)
{
pcm[i] = new float[pcm_storage];
}
// all 1 (large block) or 0 (small block)
// explicitly set for the sake of clarity
lW = 0; // previous window size
W = 0; // current window size
// all vector indexes; multiples of samples_per_envelope_step
centerW = vi.blocksizes[1] / 2;
pcm_current = centerW;
// initialize all the mapping/backend lookups
mode = new Object[vi.modes];
for (int i = 0; i < vi.modes; i++)
{
int mapnum = vi.mode_param[i].mapping;
int maptype = vi.map_type[mapnum];
mode[i] = FuncMapping.mapping_P[maptype].look(this, vi.mode_param[i],
vi.map_param[mapnum]);
}
return(0);
}