// Decode a code using huffman table h.
static int Decode(Huffman h, BitReader br)
{
int code = 0; // len bits being decoded
int first = 0; // first code of length len
int index = 0; // index of first code of length len in symbol table
short next = 1;
while (true)
{
code |= br.ReadBits(1) ^ 1; // invert code
int count = h.Count[next++];
if (code < first + count)
{
return(h.Symbol[index + (code - first)]);
}
index += count;
first += count;
first <<= 1;
code <<= 1;
}
}
// Decode a code using huffman table h.
static int Decode(Huffman h, BitReader br)
{
var code = 0; // len bits being decoded
var first = 0; // first code of length len
var index = 0; // index of first code of length len in symbol table
short next = 1;
while (true)
{
code |= br.ReadBits(1) ^ 1; // invert code
int count = h.Count[next++];
if (code < first + count)
return h.Symbol[index + (code - first)];
index += count;
first += count;
first <<= 1;
code <<= 1;
}
}