Modify buffer data in probe callback in python

[Sebastian de Castelberg]

Hi list,

I was wondering if it is possible to modify audio data in a buffer
probe callback in python. Basically, I'd like to do something like
'cb_have_data' in [1] but in python. There's a data attribute on the
buffer object that looks like a string representation of the binary
audio data, but I wasn't able to modify it's content. Did anyone
already try something similar?

  def data_probe(pad, buffer):
    # modify buffer.data
  element.get_pad('sink').add_buffer_probe(data_probe)

I appreciate your hints.

[1] http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-dataaccess.html

-- 
sebastian de castelberg