Class: Resedit::BitConverter

Inherits:
Object
  • Object
show all
Defined in:
lib/resedit/convert/bitconv.rb

Class Method Summary collapse

Class Method Details

.bits2Bytes(bits, width) ⇒ Object 



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# File 'lib/resedit/convert/bitconv.rb', line 5

def self.bits2Bytes(bits, width)
    i=0
    res=[]
    while i<bits.length
        buf=0
        cw=0
        bsz=0
        while cw<width
            if bsz==0
                buf = bits[i]
                i+=1
                bsz=8
            end
            bsz-=1
            cw+=1
            res << ((buf>>bsz) & 1)
        end
    end
    return res
end

.bytes2Bits(bytes, rwidth, bwidth) ⇒ Object 



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# File 'lib/resedit/convert/bitconv.rb', line 26

def self.bytes2Bits(bytes, rwidth, bwidth)
    res=[]
    for i in 0..(bytes.length/rwidth)-1
        row=bytes[i*rwidth..i*rwidth+rwidth-1]
        while row.length < bwidth*8
            row << 0
        end
        b=0
        for j in 0..row.length-1
            b <<= 1
            b |= row[j]
            if (j+1)%8==0
                res << (b & 0xFF)
                b=0
            end
        end
    end
    return res
end