HuffmanLut.h

// HuffmanLut.h
//
 
namespace nkMemory
{
    struct HuffmanTreeDescriptor final
    {
        BufferCast<unsigned short> _table ;           
        unsigned char _perBitsCounts [16] = {0u} ;    
    } ;
 
    struct HuffmanSymbol final
    {
        unsigned short _size = 0 ;  
        unsigned short _value = 0 ; 
    } ;
}
 
namespace nkMemory
{
    class HuffmanLut
    {
        public :
 
            // Constructor, destructor
            HuffmanLut (const HuffmanTreeDescriptor& descriptor) noexcept ;
            HuffmanLut (nkMemory::BufferView<unsigned short> canonicalDescription) noexcept ;
 
            // Getters
            BufferView<HuffmanSymbol> getLut () const ;
            HuffmanSymbol get (unsigned int input) const ;
            unsigned int getLutSize () const ;
            unsigned int getMaxSymbolSize () const ;
    } ;
}