def insertFrame(self, data, delayTime):
#write f9
self.fileWrite.write('!')
self.fileWrite.write(chr(0xf9))
self.fileWrite.write(chr(4))
self.fileWrite.write(chr(5))
strWrite = ''
strWrite += chr(delayTime % 256)
strWrite += chr(delayTime / 256)
strWrite += chr(7)
strWrite += chr(0)
self.fileWrite.write(strWrite)
#write img
self.fileWrite.write(',')
strWrite = ''
strWrite += chr(self.XOffset % 256)
strWrite += chr(self.XOffset / 256)
strWrite += chr(self.YOffset % 256)
strWrite += chr(self.YOffset / 256)
strWrite += chr(self.width % 256)
strWrite += chr(self.width / 256)
strWrite += chr(self.height % 256)
strWrite += chr(self.height / 256)
strWrite += chr(0)
self.fileWrite.write(strWrite)
#write
self.fileWrite.write(chr(4))
enc = lzw(4, data)
strEncode = enc.encode()
wholeLen = len(strEncode)
wLen = 0
while wLen < wholeLen:
if wholeLen - wLen > 255:
self.fileWrite.write(chr(255))
self.fileWrite.write(strEncode[wLen: wLen + 255])
wLen += 255
else:
self.fileWrite.write(chr(wholeLen - wLen))
self.fileWrite.write(strEncode[wLen:])
wLen = wholeLen
self.fileWrite.write(chr(0))
def insertFrame(self, data, delayTime):
#write f9
self.fileWrite.write('!')
self.fileWrite.write(chr(0xf9))
self.fileWrite.write(chr(4))
self.fileWrite.write(chr(5))
strWrite = ''
strWrite += chr(delayTime % 256)
strWrite += chr(delayTime / 256)
strWrite += chr(7)
strWrite += chr(0)
self.fileWrite.write(strWrite)
#write img
self.fileWrite.write(',')
strWrite = ''
strWrite += chr(self.XOffset % 256)
strWrite += chr(self.XOffset / 256)
strWrite += chr(self.YOffset % 256)
strWrite += chr(self.YOffset / 256)
strWrite += chr(self.width % 256)
strWrite += chr(self.width / 256)
strWrite += chr(self.height % 256)
strWrite += chr(self.height / 256)
strWrite += chr(0)
self.fileWrite.write(strWrite)
#write
self.fileWrite.write(chr(4))
enc = lzw(4, data)
strEncode = enc.encode()
wholeLen = len(strEncode)
wLen = 0
while wLen < wholeLen:
if wholeLen - wLen > 255:
self.fileWrite.write(chr(255))
self.fileWrite.write(strEncode[wLen:wLen + 255])
wLen += 255
else:
self.fileWrite.write(chr(wholeLen - wLen))
self.fileWrite.write(strEncode[wLen:])
wLen = wholeLen
self.fileWrite.write(chr(0))
def test_encoding(self):
l = lzw()
l.set_to_simple()
self.assertTrue(l.encode("bccacbcccccccccccaccca") == [2,3,3,1,3,4,5,10,11,6,10,1])
def test_decode(self):
l = lzw()
l.set_to_simple()
self.assertTrue(l.decode([2,3,3,1,3,4,5,10,11,6,10,1]) == ['b', 'c', 'c', 'a', 'c', 'bc', 'cc', 'ccc', 'cccc', 'ca', 'ccc', 'a'])
def test_decode_task1(self):
l = lzw()
l.set_to_simple()
print l.decode([2,3,3,1,3,4,5,10,11,6,10,1])
