packing_info.h

#pragma once
 
#include <stddef.h>
 
#include <cgv/data/lib_begin.h>
 
namespace cgv {
    namespace data {
 
class CGV_API packing_info 
{
protected:
    bool is_packed   : 1;
    unsigned bd0 : 6;
    unsigned bd1 : 6;
    unsigned bd2 : 6;
    unsigned bd3 : 6;
    unsigned ca  : 6;
    bool prepare_bit_operation(unsigned ci, void* ptr, unsigned &off, unsigned &bd, unsigned* &iptr) const;
    bool prepare_bit_operation(unsigned ci, const void* ptr, unsigned &off, unsigned &bd, const unsigned* &iptr) const;
    unsigned int get_bit_offset(unsigned ci) const;
public:
    packing_info(unsigned align = 1, unsigned d0 = 0, unsigned d1 = 0, unsigned d2 = 0, unsigned d3 = 0);
    void clear();
    unsigned get_bit_depth(unsigned ci) const;
    void set_bit_depth(unsigned ci, unsigned depth);
    bool is_packing() const;
    void set_packing(bool enable = true);
    unsigned int get_component_alignment() const;
    void set_component_alignment(unsigned a);
    static size_t align(size_t v, unsigned a);
    int get_signed(unsigned ci, const void* ptr) const;
    unsigned int get_unsigned(unsigned ci, const void* ptr) const;
    bool set_signed(unsigned ci, void* ptr, int v) const;
    bool set_unsigned(unsigned ci, void* ptr, unsigned v) const;
    bool operator == (const packing_info& pi) const;
    bool operator != (const packing_info& pi) const;
};
 
    }
}
 
#include <cgv/config/lib_end.h>