68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
#pragma once
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#include "types.h"
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#define BITMAP_BYTE_COUNT(number_of_bits) (number_of_bits / Bitmap::bits_per_bitmap_atom_ + ((number_of_bits % Bitmap::bits_per_bitmap_atom_ > 0) ? 1 : 0))
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class Bitmap
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{
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public:
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static uint8 const bits_per_bitmap_atom_;
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Bitmap(size_t number_of_bits);
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Bitmap(const Bitmap &bm);
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~Bitmap();
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bool setBit(size_t bit_number);
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static bool setBit(uint8* b, size_t& num_bits_set, size_t bit_number);
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bool getBit(size_t bit_number);
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static bool getBit(uint8* b, size_t bit_number);
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bool unsetBit(size_t bit_number);
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static bool unsetBit(uint8* b, size_t& num_bits_set, size_t bit_number);
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size_t getSize();
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/**
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* returns the number of bits set
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* @return the number of bits set
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*/
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size_t getNumBitsSet();
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/**
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* returns the number of unset bits
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* @return the number of unset bits
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*/
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size_t getNumFreeBits();
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/**
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* prints the bitmap using kprintfd
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*/
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void bmprint();
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static void bmprint(uint8* b, size_t n, size_t num_bits_set);
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/**
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* sets a whole byte in the bitmap
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* only use if you know what you are doing
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* @param byte_number the number of the byte to set
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* @param byte the byte to set
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*/
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void setByte(size_t byte_number, uint8 byte);
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/**
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* returns a whole byte of a given number
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* only use if you know what you are doing
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* @param byte_number the number of the byte to return
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* @return the byte
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*/
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uint8 getByte(size_t byte_number);
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private:
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size_t size_;
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size_t num_bits_set_;
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uint8 *bitmap_;
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};
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