aguaviva / micro-jpeg-visualizer Goto Github PK

Running the script gives the following output:

Traceback (most recent call last):
  File "micro-jpeg-visualizer.py", line 282, in <module>
    j.decode(open('images/porsche.jpg', 'r').read())
  File "micro-jpeg-visualizer.py", line 262, in decode
    self.DefineQuantizationTables(chunk)
  File "micro-jpeg-visualizer.py", line 214, in DefineQuantizationTables
    self.quant[hdr & 0xf] =  GetArray("B", data[1:1+64],64)
  File "micro-jpeg-visualizer.py", line 36, in GetArray
    return      list(unpack(s,l[:length]))
struct.error: unpack requires a string argument of length 64


Python version using: Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 
32 bit (Intel)] on win
32

Original issue reported on code.google.com by [email protected] on 5 Jan 2012 at 11:47

When I change the porsche.jpg to my own picture, the error: IndexError: list index out of range, my picture is 512*512 and 55KB

Hi. Would you mind adding a license to your code? (something liberal, such as CC-0 or MIT license would be great)

Problem:

Getting type mismatch error when trying to run it.

Traceback (most recent call last): File "micro-jpeg-visualizer.py", line 280, in <module> jpeg().decode(open('images/porsche.jpg', 'rb').read()) File "micro-jpeg-visualizer.py", line 267, in decode lenchunk = self.StartOfScan(data, lenchunk) File "micro-jpeg-visualizer.py", line 204, in StartOfScan matL, oldlumdccoeff = self.BuildMatrix(st,0, self.quant[self.quantMapping[0]], oldlumdccoeff) File "micro-jpeg-visualizer.py", line 173, in BuildMatrix code = self.tables[0+idx].GetCode(st) File "micro-jpeg-visualizer.py", line 156, in GetCode res = self.Find(st) File "micro-jpeg-visualizer.py", line 151, in Find r=r[st.GetBit()] File "micro-jpeg-visualizer.py", line 112, in GetBit return (b >> s) & 1 TypeError: unsupported operand type(s) for >>: 'str' and 'int'

Setup:

Windows 10
Python 3.6

Is this repo accepting pull requests? I have expanded the code to work for various chroma subsampling also. Initially it was working for 1x1 only but now I can make it work for 1x2, 2x1 and 2x2 also.