[gst-devel] building a gst plugin

[vineeth]

Hi all,
  I was going through the Plugin writers guide, and I sincerely feel that
the chapter 9<http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/chapter-building-testapp.html>should
also describe how to build the test plugin "my_filter"
  that was described all the way along and also being used in the test app.
BTW, I used the following command to do this,
   gcc  `pkg-config --libs --cflags gstreamer-0.10`  gstexamplefilter.c
--shared -o ~/.gstreamer-0.10/plugins/libexamplefilter.so

  But was unable to load it,

  I got the following error message, when I ran it through valgrind :

==3068== Memcheck, a memory error detector.
==3068== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al.
==3068== Using LibVEX rev 1884, a library for dynamic binary translation.
==3068== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP.
==3068== Using valgrind-3.4.1-Debian, a dynamic binary instrumentation
framework.
==3068== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al.
==3068== For more details, rerun with: -v
==3068==
==3069== Invalid read of size 1
==3069==    at 0x42DC3D7: g_str_hash (in /usr/lib/libglib-2.0.so.0.2000.1)
==3069==    by 0x42AA3FA: g_hash_table_lookup (in
/usr/lib/libglib-2.0.so.0.2000.1)
==3069==    by 0x42A3EB6: g_intern_string (in
/usr/lib/libglib-2.0.so.0.2000.1)
==3069==    by 0x4095A48: (within /usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x4096F51: gst_plugin_load_file (in
/usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x40A0B8E: (within /usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x40A0CA7: gst_registry_scan_path (in
/usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x40547B2: (within /usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x40551AC: (within /usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x40568FA: (within /usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==    by 0x42C7DCA: g_option_context_parse (in
/usr/lib/libglib-2.0.so.0.2000.1)
==3069==    by 0x4055FA5: gst_init_check (in
/usr/lib/libgstreamer-0.10.so.0.19.0)
==3069==  Address 0x1 is not stack'd, malloc'd or (recently) free'd

ERROR: Caught a segmentation fault while loading plugin file:
/home/pubuntu/.gstreamer-0.10/plugins/libexamplefilter.so

Please either:
- remove it and restart.
- run with --gst-disable-segtrap and debug.
                    ....


 Any idea about what is going wrong?
 Thanks

Br,
V
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