override internal Object unpack(Info vi, NVorbis.Ogg.BBuffer 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)
{
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)
{
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)
{
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))
{
info.free();
return(null);
}
}
}
info.postlist[0] = 0;
info.postlist[1] = 1 << rangebits;
return(info);
}
internal override Object unpack(Info vi, NVorbis.Ogg.BBuffer 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)
{
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)
{
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)
{
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))
{
info.free();
return (null);
}
}
}
info.postlist[0] = 0;
info.postlist[1] = 1 << rangebits;
return (info);
}
