Bug 171659 – gst-launch crashes on a pipeline for recording a vnc session to theora

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Bug 171659 - gst-launch crashes on a pipeline for recording a vnc session to theora


Summary:	gst-launch crashes on a pipeline for recording a vnc session to theora


Status:	RESOLVED FIXED

Product:	GStreamer
Classification:	Platform
Component:	gst-plugins
Version:	0.8.9
Hardware:	Other All

Importance:	High critical
Target Milestone:	0.8.9
Assigned To:	GStreamer Maintainers
QA Contact:	GStreamer Maintainers

URL:
Whiteboard:

Depends on:
Blocks:

Reported:	2005-03-25 23:06 UTC by Samuel Abels
Modified:	2005-06-30 16:00 UTC

See Also:
GNOME target:	---
GNOME version:	2.9/2.10

Attachments
CLI output (7.32 KB, text/plain) 2005-03-25 23:07 UTC, Samuel Abels		Details
Another CLI output (12.38 KB, text/plain) 2005-03-26 12:32 UTC, Samuel Abels		Details
add support for 8/16/32 bpp (4.16 KB, patch) 2005-05-16 19:40 UTC, Luca Ognibene	none	Details \| Review

Description Samuel Abels 2005-03-25 23:06:20 UTC

Steps to reproduce:
1. Run a vnc server on port 5900. (I run vino 2.10.0-0ubuntu1)

2. Run this pipeline:

gst-launch-0.8 rfbsrc port=5900 ! ffmpegcolorspace ! theoraenc ! oggmux !
filesink location=out.ogg

3. It segfaults.


Stack trace:
Program received signal SIGSEGV, Segmentation fault.

+ Trace 57340

Thread NaN (LWP 25152)

#0 gst_rfbsrc_get_type
from /usr/lib/gstreamer-0.8/libgstrfbsrc.so
#1 rfb_decoder_iterate
from /usr/lib/gstreamer-0.8/libgstrfbsrc.so
#2 rfb_decoder_iterate
from /usr/lib/gstreamer-0.8/libgstrfbsrc.so
#3 gst_rfbsrc_get_type
from /usr/lib/gstreamer-0.8/libgstrfbsrc.so
#4 gst_pad_call_get_function
from /usr/lib/libgstreamer-0.8.so.1
#5 ??
from /usr/lib/gstreamer-0.8/libgstoptscheduler.so
#6 ??
#7 ??
#8 ??
from /usr/lib/gstreamer-0.8/libgstoptscheduler.so
#9 ??
from /usr/lib/gstreamer-0.8/libgstoptscheduler.so
#10 ??
#11 ??
#12 ??
from /usr/lib/gstreamer-0.8/libgstoptscheduler.so
#13 ??
#14 ??
#15 ??
#16 ??
from /usr/lib/libgstreamer-0.8.so.1
#17 ??
#18 ??
#19 ??
#20 ??
#21 ??
from /usr/lib/gstreamer-0.8/libgstoptscheduler.so
#22 ??
#23 ??
#24 ??
#25 ??
from /usr/lib/gstreamer-0.8/libgstoptscheduler.so
#26 ??
#27 ??
#28 ??
#29 gst_debug_log
from /usr/lib/libgstreamer-0.8.so.1



Other information:

Comment 1 Samuel Abels 2005-03-25 23:07:15 UTC

Created attachment 39264 [details]
CLI output

The complete CLI output.

Comment 2 David Schleef 2005-03-26 00:28:15 UTC

Could you get a backtrace with debugging symbols?

Comment 3 Samuel Abels 2005-03-26 12:32:58 UTC

Created attachment 39278 [details]
Another CLI output

The attached file includes a backtrace with debugging symbols. This was
compiled from the gst-plugins 0.8.8 package.

Comment 4 Luis Villa 2005-05-02 00:00:35 UTC

I'd really love to see this one fixed so that I can do theora demos for the
liveCD; am reopening since the requested information was provided.

Comment 5 Luca Ognibene 2005-05-15 22:07:36 UTC

I've started looking at this bug this evening. The problem is that rfbsrc works only if bpp is 8. I've 
added some code to handle 8/16/24 bpp and it seems to work fine. I only need to add some check for 
LE/BE system. I'm planning to finish this patch tomorrow.. will file here for review!

Comment 6 Luca Ognibene 2005-05-16 19:40:11 UTC

Created attachment 46509 [details] [review]
add support for 8/16/32 bpp

This patch adds support for 8/16/24 bpp. I've only tested it on a little endian
system and it seems to work fine.. I'm not committing this because i would like
a review (i'm not totally sure if my changes are right..). 
Can you please test and see if this work? thanks!

Comment 7 Luca Ognibene 2005-05-16 19:42:50 UTC

The patch is against current cvs of gst-plugins/gst/librfb. sigh, i can't change
the status of the bug :( please set to needinfo..

Comment 8 David Schleef 2005-05-16 22:40:56 UTC

I don't think you mean NEEDINFO, as that will cause us to ignore it.  I'll
review the patch soon.

Comment 9 David Schleef 2005-05-17 07:12:36 UTC

I did a bunch of hacking on rfbsrc today.  This bug (and the 10 other related
bugs) are fixed.