override public Object unpack(Info vi , csBuffer opb)
{
InfoFloor0 info=new InfoFloor0();
info.order=opb.read(8);
info.rate=opb.read(16);
info.barkmap=opb.read(16);
info.ampbits=opb.read(6);
info.ampdB=opb.read(8);
info.numbooks=opb.read(4)+1;
if((info.order<1)||
(info.rate<1)||
(info.barkmap<1)||
(info.numbooks<1))
{
//free_info(info);
return(null);
}
for(int j=0;j<info.numbooks;j++)
{
info.books[j]=opb.read(8);
if(info.books[j]<0 || info.books[j]>=vi.books)
{
//free_info(info);
return(null);
}
}
return(info);
// err_out:
// free_info(info);
// return(NULL);
}
override public Object unpack(Info vi, csBuffer opb)
{
int acc=0;
InfoResidue0 info=new InfoResidue0();
info.begin=opb.read(24);
info.end=opb.read(24);
info.grouping=opb.read(24)+1;
info.partitions=opb.read(6)+1;
info.groupbook=opb.read(8);
for(int j=0;j<info.partitions;j++)
{
int cascade=opb.read(3);
if(opb.read(1)!=0)
{
cascade|=(opb.read(5)<<3);
}
info.secondstages[j]=cascade;
acc+=icount(cascade);
}
for(int j=0;j<acc;j++)
{
info.booklist[j]=opb.read(8);
// if(info.booklist[j]==255)info.booklist[j]=-1;
}
if(info.groupbook>=vi.books)
{
free_info(info);
return(null);
}
for(int j=0;j<acc;j++)
{
if(info.booklist[j]>=vi.books)
{
free_info(info);
return(null);
}
}
return(info);
// errout:
// free_info(info);
// return(NULL);
}
internal int unpack(csBuffer opb)
{
int vendorlen = opb.read(32);
if (vendorlen < 0)
{
//goto err_out;
clear();
return(-1);
}
vendor = new byte[vendorlen + 1];
opb.read(vendor, vendorlen);
comments = opb.read(32);
if (comments < 0)
{
//goto err_out;
clear();
return(-1);
}
user_comments = new byte[comments + 1][];
comment_lengths = new int[comments + 1];
for (int i = 0; i < comments; i++)
{
int len = opb.read(32);
if (len < 0)
{
//goto err_out;
clear();
return(-1);
}
comment_lengths[i] = len;
user_comments[i] = new byte[len + 1];
opb.read(user_comments[i], len);
}
if (opb.read(1) != 1)
{
//goto err_out; // EOP check
clear();
return(-1);
}
return(0);
// err_out:
// comment_clear(vc);
// return(-1);
}
// The Vorbis header is in three packets; the initial small packet in
// the first page that identifies basic parameters, a second packet
// with bitstream comments and a third packet that holds the
// codebook.
public int synthesis_headerin(Comment vc, Packet op)
{
csBuffer opb = new csBuffer();
if (op != null)
{
opb.readinit(op.packet_base, op.packet, op.bytes);
// Which of the three types of header is this?
// Also verify header-ness, vorbis
{
byte[] buffer = new byte[6];
int packtype = opb.read(8);
//memset(buffer,0,6);
opb.read(buffer, 6);
if (buffer[0] != 'v' || buffer[1] != 'o' || buffer[2] != 'r' ||
buffer[3] != 'b' || buffer[4] != 'i' || buffer[5] != 's')
{
// not a vorbis header
return(-1);
}
switch (packtype)
{
case 0x01: // least significant *bit* is read first
if (op.b_o_s == 0)
{
// Not the initial packet
return(-1);
}
if (rate != 0)
{
// previously initialized info header
return(-1);
}
return(unpack_info(opb));
case 0x03: // least significant *bit* is read first
if (rate == 0)
{
// um... we didn't get the initial header
return(-1);
}
return(vc.unpack(opb));
case 0x05: // least significant *bit* is read first
if (rate == 0 || vc.vendor == null)
{
// um... we didn;t get the initial header or comments yet
return(-1);
}
return(unpack_books(opb));
default:
// Not a valid vorbis header type
//return(-1);
break;
}
}
}
return(-1);
}
// all of the real encoding details are here. The modes, books,
// everything
int unpack_books(csBuffer opb)
{
//d* codebooks
books = opb.read(8) + 1;
if (book_param == null || book_param.Length != books)
{
book_param = new StaticCodeBook[books];
}
for (int i = 0; i < books; i++)
{
book_param[i] = new StaticCodeBook();
if (book_param[i].unpack(opb) != 0)
{
//goto err_out;
clear();
return(-1);
}
}
// time backend settings
times = opb.read(6) + 1;
if (time_type == null || time_type.Length != times)
{
time_type = new int[times];
}
if (time_param == null || time_param.Length != times)
{
time_param = new Object[times];
}
for (int i = 0; i < times; i++)
{
time_type[i] = opb.read(16);
if (time_type[i] < 0 || time_type[i] >= VI_TIMEB)
{
//goto err_out;
clear();
return(-1);
}
time_param[i] = FuncTime.time_P[time_type[i]].unpack(this, opb);
if (time_param[i] == null)
{
//goto err_out;
clear();
return(-1);
}
}
// floor backend settings
floors = opb.read(6) + 1;
if (floor_type == null || floor_type.Length != floors)
{
floor_type = new int[floors];
}
if (floor_param == null || floor_param.Length != floors)
{
floor_param = new Object[floors];
}
for (int i = 0; i < floors; i++)
{
floor_type[i] = opb.read(16);
if (floor_type[i] < 0 || floor_type[i] >= VI_FLOORB)
{
//goto err_out;
clear();
return(-1);
}
floor_param[i] = FuncFloor.floor_P[floor_type[i]].unpack(this, opb);
if (floor_param[i] == null)
{
//goto err_out;
clear();
return(-1);
}
}
// residue backend settings
residues = opb.read(6) + 1;
if (residue_type == null || residue_type.Length != residues)
{
residue_type = new int[residues];
}
if (residue_param == null || residue_param.Length != residues)
{
residue_param = new Object[residues];
}
for (int i = 0; i < residues; i++)
{
residue_type[i] = opb.read(16);
if (residue_type[i] < 0 || residue_type[i] >= VI_RESB)
{
// goto err_out;
clear();
return(-1);
}
residue_param[i] = FuncResidue.residue_P[residue_type[i]].unpack(this, opb);
if (residue_param[i] == null)
{
// goto err_out;
clear();
return(-1);
}
}
// map backend settings
maps = opb.read(6) + 1;
if (map_type == null || map_type.Length != maps)
{
map_type = new int[maps];
}
if (map_param == null || map_param.Length != maps)
{
map_param = new Object[maps];
}
for (int i = 0; i < maps; i++)
{
map_type[i] = opb.read(16);
if (map_type[i] < 0 || map_type[i] >= VI_MAPB)
{
// goto err_out;
clear();
return(-1);
}
map_param[i] = FuncMapping.mapping_P[map_type[i]].unpack(this, opb);
if (map_param[i] == null)
{
// goto err_out;
clear();
return(-1);
}
}
// mode settings
modes = opb.read(6) + 1;
if (mode_param == null || mode_param.Length != modes)
{
mode_param = new InfoMode[modes];
}
for (int i = 0; i < modes; i++)
{
mode_param[i] = new InfoMode();
mode_param[i].blockflag = opb.read(1);
mode_param[i].windowtype = opb.read(16);
mode_param[i].transformtype = opb.read(16);
mode_param[i].mapping = opb.read(8);
if ((mode_param[i].windowtype >= VI_WINDOWB) ||
(mode_param[i].transformtype >= VI_WINDOWB) ||
(mode_param[i].mapping >= maps))
{
// goto err_out;
clear();
return(-1);
}
}
if (opb.read(1) != 1)
{
//goto err_out; // top level EOP check
clear();
return(-1);
}
return(0);
// err_out:
// vorbis_info_clear(vi);
// return(-1);
}
// Header packing/unpacking
int unpack_info(csBuffer opb)
{
version=opb.read(32);
if(version!=0) { return(-1); }
channels=opb.read(8);
rate=opb.read(32);
bitrate_upper=opb.read(32);
bitrate_nominal=opb.read(32);
bitrate_lower=opb.read(32);
blocksizes[0]=1<<opb.read(4);
blocksizes[1]=1<<opb.read(4);
if((rate<1) ||
(channels<1)||
(blocksizes[0]<8)||
(blocksizes[1]<blocksizes[0]) ||
(opb.read(1)!=1)) {
//goto err_out; // EOP check
clear();
return(-1);
}
return(0);
// err_out:
// vorbis_info_clear(vi);
// return(-1);
}
// all of the real encoding details are here. The modes, books,
// everything
int unpack_books(csBuffer opb)
{
//d* codebooks
books=opb.read(8)+1;
if(book_param==null || book_param.Length!=books) {
book_param=new StaticCodeBook[books];
}
for(int i=0; i<books; i++) {
book_param[i]=new StaticCodeBook();
if(book_param[i].unpack(opb)!=0) {
//goto err_out;
clear();
return(-1);
}
}
// time backend settings
times=opb.read(6)+1;
if(time_type==null || time_type.Length!=times) { time_type=new int[times]; }
if(time_param==null || time_param.Length!=times) {
time_param=new Object[times];
}
for(int i=0; i<times; i++) {
time_type[i]=opb.read(16);
if(time_type[i]<0 || time_type[i]>=VI_TIMEB) {
//goto err_out;
clear();
return(-1);
}
time_param[i]=FuncTime.time_P[time_type[i]].unpack(this, opb);
if(time_param[i]==null) {
//goto err_out;
clear();
return(-1);
}
}
// floor backend settings
floors=opb.read(6)+1;
if(floor_type==null || floor_type.Length!=floors) {
floor_type=new int[floors];
}
if(floor_param==null || floor_param.Length!=floors) {
floor_param=new Object[floors];
}
for(int i=0; i<floors; i++) {
floor_type[i]=opb.read(16);
if(floor_type[i]<0 || floor_type[i]>=VI_FLOORB) {
//goto err_out;
clear();
return(-1);
}
floor_param[i]=FuncFloor.floor_P[floor_type[i]].unpack(this,opb);
if(floor_param[i]==null) {
//goto err_out;
clear();
return(-1);
}
}
// residue backend settings
residues=opb.read(6)+1;
if(residue_type==null || residue_type.Length!=residues) {
residue_type=new int[residues];
}
if(residue_param==null || residue_param.Length!=residues) {
residue_param=new Object[residues];
}
for(int i=0; i<residues; i++) {
residue_type[i]=opb.read(16);
if(residue_type[i]<0 || residue_type[i]>=VI_RESB) {
// goto err_out;
clear();
return(-1);
}
residue_param[i]=FuncResidue.residue_P[residue_type[i]].unpack(this,opb);
if(residue_param[i]==null) {
// goto err_out;
clear();
return(-1);
}
}
// map backend settings
maps=opb.read(6)+1;
if(map_type==null || map_type.Length!=maps) { map_type=new int[maps]; }
if(map_param==null || map_param.Length!=maps) { map_param=new Object[maps]; }
for(int i=0; i<maps; i++) {
map_type[i]=opb.read(16);
if(map_type[i]<0 || map_type[i]>=VI_MAPB) {
// goto err_out;
clear();
return(-1);
}
map_param[i]=FuncMapping.mapping_P[map_type[i]].unpack(this,opb);
if(map_param[i]==null) {
// goto err_out;
clear();
return(-1);
}
}
// mode settings
modes=opb.read(6)+1;
if(mode_param==null || mode_param.Length!=modes) {
mode_param=new InfoMode[modes];
}
for(int i=0; i<modes; i++) {
mode_param[i]=new InfoMode();
mode_param[i].blockflag=opb.read(1);
mode_param[i].windowtype=opb.read(16);
mode_param[i].transformtype=opb.read(16);
mode_param[i].mapping=opb.read(8);
if((mode_param[i].windowtype>=VI_WINDOWB)||
(mode_param[i].transformtype>=VI_WINDOWB)||
(mode_param[i].mapping>=maps)) {
// goto err_out;
clear();
return(-1);
}
}
if(opb.read(1)!=1) {
//goto err_out; // top level EOP check
clear();
return(-1);
}
return(0);
// err_out:
// vorbis_info_clear(vi);
// return(-1);
}
// The Vorbis header is in three packets; the initial small packet in
// the first page that identifies basic parameters, a second packet
// with bitstream comments and a third packet that holds the
// codebook.
public int synthesis_headerin(Comment vc, Packet op)
{
csBuffer opb=new csBuffer();
if(op!=null) {
opb.readinit(op.packet_base, op.packet, op.bytes);
// Which of the three types of header is this?
// Also verify header-ness, vorbis
{
byte[] buffer=new byte[6];
int packtype=opb.read(8);
//memset(buffer,0,6);
opb.read(buffer,6);
if(buffer[0]!='v' || buffer[1]!='o' || buffer[2]!='r' ||
buffer[3]!='b' || buffer[4]!='i' || buffer[5]!='s') {
// not a vorbis header
return(-1);
}
switch(packtype) {
case 0x01: // least significant *bit* is read first
if(op.b_o_s==0) {
// Not the initial packet
return(-1);
}
if(rate!=0) {
// previously initialized info header
return(-1);
}
return(unpack_info(opb));
case 0x03: // least significant *bit* is read first
if(rate==0) {
// um... we didn't get the initial header
return(-1);
}
return(vc.unpack(opb));
case 0x05: // least significant *bit* is read first
if(rate==0 || vc.vendor==null) {
// um... we didn;t get the initial header or comments yet
return(-1);
}
return(unpack_books(opb));
default:
// Not a valid vorbis header type
//return(-1);
break;
}
}
}
return(-1);
}
public int synthesis(Packet op)
{
Info vi = vd.vi;
// first things first. Make sure decode is ready
// ripcord();
opb.readinit(op.packet_base, op.packet, op.bytes);
// Check the packet type
if (opb.read(1) != 0)
{
// Oops. This is not an audio data packet
return(-1);
}
// read our mode and pre/post windowsize
int _mode = opb.read(vd.modebits);
if (_mode == -1)
{
return(-1);
}
mode = _mode;
W = vi.mode_param[mode].blockflag;
if (W != 0)
{
lW = opb.read(1);
nW = opb.read(1);
if (nW == -1)
{
return(-1);
}
}
else
{
lW = 0;
nW = 0;
}
// more setup
granulepos = op.granulepos;
sequence = op.packetno - 3; // first block is third packet
eofflag = op.e_o_s;
// alloc pcm passback storage
pcmend = vi.blocksizes[W];
//pcm=alloc(vi.channels);
if (pcm.Length < vi.channels)
{
pcm = new float[vi.channels][];
}
for (int i = 0; i < vi.channels; i++)
{
if (pcm[i] == null || pcm[i].Length < pcmend)
{
pcm[i] = new float[pcmend];
//pcm[i]=alloc(pcmend);
}
else
{
for (int j = 0; j < pcmend; j++)
{
pcm[i][j] = 0;
}
}
}
// unpack_header enforces range checking
int type = vi.map_type[vi.mode_param[mode].mapping];
return(FuncMapping.mapping_P[type].inverse(this, vd.mode[mode]));
}
override public Object unpack(Info vi, csBuffer opb)
{
// also responsible for range checking
InfoMapping0 info = new InfoMapping0();
// !!!!
if (opb.read(1) != 0)
{
info.submaps = opb.read(4) + 1;
}
else
{
info.submaps = 1;
}
if (opb.read(1) != 0)
{
info.coupling_steps = opb.read(8) + 1;
for (int i = 0; i < info.coupling_steps; i++)
{
int testM = info.coupling_mag[i] = opb.read(ilog2(vi.channels));
int testA = info.coupling_ang[i] = opb.read(ilog2(vi.channels));
if (testM < 0 ||
testA < 0 ||
testM == testA ||
testM >= vi.channels ||
testA >= vi.channels)
{
//goto err_out;
info.free();
return(null);
}
}
}
if (opb.read(2) > 0)
{ /* 2,3:reserved */
//goto err_out;
info.free();
return(null);
}
if (info.submaps > 1)
{
for (int i = 0; i < vi.channels; i++)
{
info.chmuxlist[i] = opb.read(4);
if (info.chmuxlist[i] >= info.submaps)
{
//goto err_out;
info.free();
return(null);
}
}
}
for (int i = 0; i < info.submaps; i++)
{
info.timesubmap[i] = opb.read(8);
if (info.timesubmap[i] >= vi.times)
{
//goto err_out;
info.free();
return(null);
}
info.floorsubmap[i] = opb.read(8);
if (info.floorsubmap[i] >= vi.floors)
{
//goto err_out;
info.free();
return(null);
}
info.residuesubmap[i] = opb.read(8);
if (info.residuesubmap[i] >= vi.residues)
{
//goto err_out;
info.free();
return(null);
}
}
return(info);
//err_out:
//free_info(info);
//return(NULL);
}
public override Object unpack(Info vi, csBuffer opb)
{
// also responsible for range checking
InfoMapping0 info=new InfoMapping0();
// !!!!
if(opb.read(1)!=0) {
info.submaps=opb.read(4)+1;
}
else {
info.submaps=1;
}
if(opb.read(1)!=0) {
info.coupling_steps=opb.read(8)+1;
for(int i=0; i<info.coupling_steps; i++) {
int testM=info.coupling_mag[i]=opb.read(ilog2(vi.channels));
int testA=info.coupling_ang[i]=opb.read(ilog2(vi.channels));
if(testM<0 ||
testA<0 ||
testM==testA ||
testM>=vi.channels ||
testA>=vi.channels) {
//goto err_out;
info.free();
return(null);
}
}
}
if(opb.read(2)>0) {
/* 2,3:reserved */
//goto err_out;
info.free();
return(null);
}
if(info.submaps>1) {
for(int i=0; i<vi.channels; i++) {
info.chmuxlist[i]=opb.read(4);
if(info.chmuxlist[i]>=info.submaps) {
//goto err_out;
info.free();
return(null);
}
}
}
for(int i=0; i<info.submaps; i++) {
info.timesubmap[i]=opb.read(8);
if(info.timesubmap[i]>=vi.times) {
//goto err_out;
info.free();
return(null);
}
info.floorsubmap[i]=opb.read(8);
if(info.floorsubmap[i]>=vi.floors) {
//goto err_out;
info.free();
return(null);
}
info.residuesubmap[i]=opb.read(8);
if(info.residuesubmap[i]>=vi.residues) {
//goto err_out;
info.free();
return(null);
}
}
return info;
//err_out:
//free_info(info);
//return(NULL);
}
internal int unpack(csBuffer opb)
{
int vendorlen=opb.read(32);
if(vendorlen<0)
{
//goto err_out;
clear();
return(-1);
}
vendor=new byte[vendorlen+1];
opb.read(vendor,vendorlen);
comments=opb.read(32);
if(comments<0)
{
//goto err_out;
clear();
return(-1);
}
user_comments=new byte[comments+1][];
comment_lengths=new int[comments+1];
for(int i=0;i<comments;i++)
{
int len=opb.read(32);
if(len<0)
{
//goto err_out;
clear();
return(-1);
}
comment_lengths[i]=len;
user_comments[i]=new byte[len+1];
opb.read(user_comments[i], len);
}
if(opb.read(1)!=1)
{
//goto err_out; // EOP check
clear();
return(-1);
}
return(0);
// err_out:
// comment_clear(vc);
// return(-1);
}
/*
*/
// unpacks a codebook from the packet buffer into the codebook struct,
// readies the codebook auxiliary structures for decode
internal int unpack(csBuffer opb)
{
int i;
//memset(s,0,sizeof(static_codebook));
// make sure alignment is correct
if(opb.read(24)!=0x564342)
{
// goto _eofout;
clear();
return(-1);
}
// first the basic parameters
dim=opb.read(16);
entries=opb.read(24);
if(entries==-1)
{
// goto _eofout;
clear();
return(-1);
}
// codeword ordering.... length ordered or unordered?
switch(opb.read(1))
{
case 0:
// unordered
lengthlist=new int[entries];
// allocated but unused entries?
if(opb.read(1)!=0)
{
// yes, unused entries
for(i=0;i<entries;i++)
{
if(opb.read(1)!=0)
{
int num=opb.read(5);
if(num==-1)
{
// goto _eofout;
clear();
return(-1);
}
lengthlist[i]=num+1;
}
else
{
lengthlist[i]=0;
}
}
}
else
{
// all entries used; no tagging
for(i=0;i<entries;i++)
{
int num=opb.read(5);
if(num==-1)
{
// goto _eofout;
clear();
return(-1);
}
lengthlist[i]=num+1;
}
}
break;
case 1:
// ordered
{
int length=opb.read(5)+1;
lengthlist=new int[entries];
for(i=0;i<entries;)
{
int num=opb.read(ilog(entries-i));
if(num==-1)
{
// goto _eofout;
clear();
return(-1);
}
for(int j=0;j<num;j++,i++)
{
lengthlist[i]=length;
}
length++;
}
}
break;
default:
// EOF
return(-1);
}
// Do we have a mapping to unpack?
switch((maptype=opb.read(4)))
{
case 0:
// no mapping
break;
case 1:
case 2:
// implicitly populated value mapping
// explicitly populated value mapping
q_min=opb.read(32);
q_delta=opb.read(32);
q_quant=opb.read(4)+1;
q_sequencep=opb.read(1);
{
int quantvals=0;
switch(maptype)
{
case 1:
quantvals=maptype1_quantvals();
break;
case 2:
quantvals=entries*dim;
break;
}
// quantized values
quantlist=new int[quantvals];
for(i=0;i<quantvals;i++)
{
quantlist[i]=opb.read(q_quant);
}
if(quantlist[quantvals-1]==-1)
{
// goto _eofout;
clear();
return(-1);
}
}
break;
default:
// goto _eofout;
clear();
return(-1);
}
// all set
return(0);
// _errout:
// _eofout:
// vorbis_staticbook_clear(s);
// return(-1);
}
/*
*/
// unpacks a codebook from the packet buffer into the codebook struct,
// readies the codebook auxiliary structures for decode
internal int unpack(csBuffer opb)
{
int i;
//memset(s,0,sizeof(static_codebook));
// make sure alignment is correct
if (opb.read(24) != 0x564342)
{
// goto _eofout;
clear();
return(-1);
}
// first the basic parameters
dim = opb.read(16);
entries = opb.read(24);
if (entries == -1)
{
// goto _eofout;
clear();
return(-1);
}
// codeword ordering.... length ordered or unordered?
switch (opb.read(1))
{
case 0:
// unordered
lengthlist = new int[entries];
// allocated but unused entries?
if (opb.read(1) != 0)
{
// yes, unused entries
for (i = 0; i < entries; i++)
{
if (opb.read(1) != 0)
{
int num = opb.read(5);
if (num == -1)
{
// goto _eofout;
clear();
return(-1);
}
lengthlist[i] = num + 1;
}
else
{
lengthlist[i] = 0;
}
}
}
else
{
// all entries used; no tagging
for (i = 0; i < entries; i++)
{
int num = opb.read(5);
if (num == -1)
{
// goto _eofout;
clear();
return(-1);
}
lengthlist[i] = num + 1;
}
}
break;
case 1:
// ordered
{
int length = opb.read(5) + 1;
lengthlist = new int[entries];
for (i = 0; i < entries;)
{
int num = opb.read(ilog(entries - i));
if (num == -1)
{
// goto _eofout;
clear();
return(-1);
}
for (int j = 0; j < num; j++, i++)
{
lengthlist[i] = length;
}
length++;
}
}
break;
default:
// EOF
return(-1);
}
// Do we have a mapping to unpack?
switch ((maptype = opb.read(4)))
{
case 0:
// no mapping
break;
case 1:
case 2:
// implicitly populated value mapping
// explicitly populated value mapping
q_min = opb.read(32);
q_delta = opb.read(32);
q_quant = opb.read(4) + 1;
q_sequencep = opb.read(1);
{
int quantvals = 0;
switch (maptype)
{
case 1:
quantvals = maptype1_quantvals();
break;
case 2:
quantvals = entries * dim;
break;
}
// quantized values
quantlist = new int[quantvals];
for (i = 0; i < quantvals; i++)
{
quantlist[i] = opb.read(q_quant);
}
if (quantlist[quantvals - 1] == -1)
{
// goto _eofout;
clear();
return(-1);
}
}
break;
default:
// goto _eofout;
clear();
return(-1);
}
// all set
return(0);
// _errout:
// _eofout:
// vorbis_staticbook_clear(s);
// return(-1);
}
// static void v_writestring(csBuffer o, byte[] s){
// int i=0;
// while(s[i]!=0){
// o.write(s[i++],8);
// }
// }
// static void v_readstring(csBuffer o, byte[] buf, int bytes){
// int i=0
// while(bytes--!=0){
// buf[i++]=o.read(8);
// }
// }
// private csBuffer opb_blocksize=new csBuffer();
public int blocksize(Packet op)
{
//codec_setup_info *ci=vi->codec_setup;
csBuffer opb=new csBuffer();
// synchronized(opb_blocksize){
int mode;
opb.readinit(op.packet_base, op.packet, op.bytes);
/* Check the packet type */
if(opb.read(1)!=0) {
/* Oops. This is not an audio data packet */
return(OV_ENOTAUDIO);
}
{
int modebits=0;
int v=modes;
while(v>1) {
modebits++;
v = (int)((uint)v >> 1);
}
/* read our mode and pre/post windowsize */
mode=opb.read(modebits);
}
if(mode==-1) { return(OV_EBADPACKET); }
return(blocksizes[mode_param[mode].blockflag]);
// }
}
override public Object unpack(Info vi, csBuffer opb)
{
int count = 0, maxclass = -1, rangebits;
InfoFloor1 info = new InfoFloor1();
/* read partitions */
info.partitions = opb.read(5); /* only 0 to 31 legal */
for (int j = 0; j < info.partitions; j++)
{
info.partitionclass[j] = opb.read(4); /* only 0 to 15 legal */
if (maxclass < info.partitionclass[j])
{
maxclass = info.partitionclass[j];
}
}
/* read partition classes */
for (int j = 0; j < maxclass + 1; j++)
{
info.class_dim[j] = opb.read(3) + 1; /* 1 to 8 */
info.class_subs[j] = opb.read(2); /* 0,1,2,3 bits */
if (info.class_subs[j] < 0)
{
//goto err_out;
info.free();
return(null);
}
if (info.class_subs[j] != 0)
{
info.class_book[j] = opb.read(8);
}
if (info.class_book[j] < 0 || info.class_book[j] >= vi.books)
{
//goto err_out;
info.free();
return(null);
}
for (int k = 0; k < (1 << info.class_subs[j]); k++)
{
info.class_subbook[j][k] = opb.read(8) - 1;
if (info.class_subbook[j][k] < -1 || info.class_subbook[j][k] >= vi.books)
{
//goto err_out;
info.free();
return(null);
}
}
}
/* read the post list */
info.mult = opb.read(2) + 1; /* only 1,2,3,4 legal now */
rangebits = opb.read(4);
for (int j = 0, k = 0; j < info.partitions; j++)
{
count += info.class_dim[info.partitionclass[j]];
for (; k < count; k++)
{
int t = info.postlist[k + 2] = opb.read(rangebits);
if (t < 0 || t >= (1 << rangebits))
{
//goto err_out;
info.free();
return(null);
}
}
}
info.postlist[0] = 0;
info.postlist[1] = 1 << rangebits;
return(info);
// err_out:
// info.free();
// return(null);
}
override public Object unpack(Info vi , csBuffer opb)
{
int count=0,maxclass=-1,rangebits;
InfoFloor1 info=new InfoFloor1();
/* read partitions */
info.partitions=opb.read(5); /* only 0 to 31 legal */
for(int j=0;j<info.partitions;j++)
{
info.partitionclass[j]=opb.read(4); /* only 0 to 15 legal */
if(maxclass<info.partitionclass[j])
maxclass=info.partitionclass[j];
}
/* read partition classes */
for(int j=0;j<maxclass+1;j++)
{
info.class_dim[j]=opb.read(3)+1; /* 1 to 8 */
info.class_subs[j]=opb.read(2); /* 0,1,2,3 bits */
if(info.class_subs[j]<0)
{
//goto err_out;
info.free();
return(null);
}
if(info.class_subs[j]!=0)
{
info.class_book[j]=opb.read(8);
}
if(info.class_book[j]<0 || info.class_book[j]>=vi.books)
{
//goto err_out;
info.free();
return(null);
}
for(int k=0;k<(1<<info.class_subs[j]);k++)
{
info.class_subbook[j][k]=opb.read(8)-1;
if(info.class_subbook[j][k]<-1 || info.class_subbook[j][k]>=vi.books)
{
//goto err_out;
info.free();
return(null);
}
}
}
/* read the post list */
info.mult=opb.read(2)+1; /* only 1,2,3,4 legal now */
rangebits=opb.read(4);
for(int j=0,k=0;j<info.partitions;j++)
{
count+=info.class_dim[info.partitionclass[j]];
for(;k<count;k++)
{
int t=info.postlist[k+2]=opb.read(rangebits);
if(t<0 || t>=(1<<rangebits))
{
//goto err_out;
info.free();
return(null);
}
}
}
info.postlist[0]=0;
info.postlist[1]=1<<rangebits;
return(info);
// err_out:
// info.free();
// return(null);
}