[gst-devel] pygst and custom src problem

[Paolo]

I have a problem with a custom src element.
I need a src that produce a video streaming from jpeg images. I've built 
one deriving a class from pushsrc (or baseSrc) and it works if I use it 
in a pipeline like:
   mycustomsrc ! jpegdec ! queue ! xvimagesink
but if I insert a videorate plugin ( mysrc ! jpegdec ! videorate ! queue 
! xvimagesink ) all the program freeze after 25 frame... the same happen 
if I use it for generate a file like ogg or avi.

I try to follow some tricks from Edward Hervey  (thank you very much 
Edward), but again I'm not able to make this code work.
Someone can help me?

Thx,
    Paolo


this is the code of my class:

######################################################
class FileSource(gst.BaseSrc):
   __gsttemplates__ = (
       gst.PadTemplate("src",
                       gst.PAD_SRC,
                       gst.PAD_ALWAYS,
                       gst.Caps("image/jpeg, framerate = (fraction) 25/1")
                       ),)

   __data = []
   __current_index = 0

   def __init__(self, name):
       self.__gobject_init__()
       self.append_image('img01.jpeg')
       self.append_image('img02.jpeg')
       self.append_image('img03.jpeg')

       self.set_format(gst.FORMAT_TIME)
       self.set_name(name)


   def do_create(self, offset, size):
       print self.__current_index, offset, size
       index = self.__current_index % len(self.__data)

       buf = gst.Buffer( self.__data[index] )
       buf.timestamp = self.__current_index * 40 * gst.MSECOND
       buf.duration = 40 * gst.MSECOND

       buf.offset = self.__current_index
       self.__current_index += 1
       buf.offset_end = self.__current_index

       if self.__current_index < 500:
           return gst.FLOW_OK, buf
       else:
           return gst.FLOW_UNEXPECTED, None


   def append_image(self, filename):
       f=open(filename, 'r')
       data = f.read()
       self.__data.append(data)
       f.close()

######################################################