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https://github.com/sehugg/8bitworkshop.git
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38 lines
903 B
Python
Executable File
38 lines
903 B
Python
Executable File
#!/usr/bin/python
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import sys
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# reverse byte
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def rev(n):
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return int('{:08b}'.format(n)[::-1], 2)
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# output bits in given range
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def out(i, pix, lb, hb, reverse=0, shift=0):
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x = (pix >> lb) & ((1<<(hb-lb))-1)
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if reverse:
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x = rev(x)
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if shift:
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x = x << shift
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assert(x>=0 and x<=255)
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output[i].append(x)
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# read PBM (binary P4 format) file
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with open(sys.argv[1],'rb') as f:
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# read PBM header
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header = f.readline().strip()
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assert(header == 'P4')
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dims = f.readline().strip()
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while dims[0] == '#':
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dims = f.readline().strip()
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width,height = map(int, dims.split())
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wbytes = (width+7)/8
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data = f.read()
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print "{%d,%d," % (wbytes,height),
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for i in range(0,len(data)):
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if i>0:
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sys.stdout.write(",")
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ofs = i+wbytes-(i%wbytes)*2-1
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sys.stdout.write( "0x%02x" % ord(data[ofs]) )
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print "}"
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