Xpra: Ticket #65: error with jpeg encoding

Unhandled error while processing packet from peer
Traceback (most recent call last):
  File "python/xpra/protocol.py", line 238, in _process_packet
    self._process_packet_cb(self, decoded)
  File "python/xpra/client.py", line 1023, in process_packet
    self._packet_handlers[packet_type](self, packet)
  File "python/xpra/client.py", line 908, in _process_draw
    window.draw(x, y, width, height, coding, data)
  File "python/xpra/client.py", line 214, in draw
    self._backing.draw_rgb_image(gc, x, y, width, height, gtk.gdk.RGB_DITHER_NONE, data)
IndexError: rgb_buf is not large enough

when trying --encoding jpeg --jpeg-quality 60

Wed, 04 Jan 2012 09:53:08 GMT - Antoine Martin: status changed

Hmm, that's the mmap drawing codepath, which does not use jpeg at all: when mmap is detected the data is just transfered as-is.

Is this repeatable? What do I need to do? Did it recover afterwards? Or did you have to restart the client?

According to this post, this may be because the "rowstride" is different from "w*3" - no idea why though, as mmap doesn't go anywhere near w or rowstride. What resolution and bit depth are you running on the client? Could also be that the backing got resized to be smaller than the data that got sent, which would be easier to deal with. Does that sound plausible?

Wed, 04 Jan 2012 10:27:35 GMT - Antoine Martin: attachment set

if the feature is supported, send the rowstride with the pixel data

Wed, 04 Jan 2012 10:30:08 GMT - Antoine Martin:

The patch above should probably be merged no matter what: although I don't think the rowstride!=w*3 codepath is hit very often at the moment, it might in the future (at which point the rowstride re-alignment should get re-written in cython for speed). I am now getting the error, must be a recent svn change.

Wed, 04 Jan 2012 13:03:26 GMT - Antoine Martin: status changed; resolution set

Lots of fixes, including this bug in r389

Mon, 20 Feb 2012 19:28:18 GMT - Antoine Martin: component, milestone changed; version set

Sat, 23 Jan 2021 04:44:34 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/65