ImageData.get_data() throws an exception on valid list input

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The following code causes an exception:

import pyglet
data = [1,2,3,4] * 10 * 10
a = pyglet.image.ImageData(10, 10, 'RGBA', data)
a.get_data('RGBA', 4)

The exception trace is:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/pymodules/python2.7/pyglet/image/__init__.py", line 701, in get_data
    return self._convert(format, pitch)
  File "/usr/lib/pymodules/python2.7/pyglet/image/__init__.py", line 986, in _convert
    self._ensure_string_data()
  File "/usr/lib/pymodules/python2.7/pyglet/image/__init__.py", line 1053, in _ensure_string_data
    memmove(buf, self._current_data, len(self._current_data))
ctypes.ArgumentError: argument 2: <type 'exceptions.TypeError'>: wrong type

This behavior occurs using both the last stable version and tip, using Python 
2.7.7 on 64-bit Linux (other platforms not tested).  

Contrast this with:

import pyglet
data = 'abcd' * 10 * 10
a = pyglet.image.ImageData(10, 10, 'RGBA', data)
a.get_data('RGBA', 4)

Which does not result in an error.

Did not try to run it under Python 3 since the current tip of pyglet doesn't 
appear to install successfully in Python 3.

Output of `python -m pyglet.info` is attached.

Original issue reported on code.google.com by [email protected] on 23 Jun 2014 at 10:51

Attachments:

• pyglet.info.out