def encode_message(file_path, message):
im = Image.open(file_path)
pix = im.load()
width, height = im.size
bit_array = ascii_to_bitarray(message)
if len(bit_array) > width*height:
return False
#for i in range(len(bit_array)):
for i in range(16):
pixel_vals = pix[i%width,i/width]
modified = pixel_vals[0]
modified &= ~(1<<0)
modified |= bit_array[i]
pix[i%width,i/width] = (modified, pixel_vals[1], pixel_vals[2])
if i < 16:
print "(%d, %d): %d" % (i%width, i/width, pix[i%width,i/height][0])
pix[15,0]=(1,2,3)
im.save('./modified_'+file_path.split('/')[-1], im.format)
return True
def encode_message(file_path, message):
f = open(file_path, 'r+b')
map = mmap.mmap(f.fileno(), 0)
message_bits = ascii_to_bitarray(message)
for i in range(len(message_bits)):
val = ord(map[-(i+1)])
val &= ~(1<<0)
val |= message_bits[i]
map[-(i+1)] = chr(val)
map.flush()
map.close()
return True