[gst-devel] GStreamer on Windows

[Scott Peterson]

Is there anything else I could provide or do that would be of use?

On 6/29/07, Scott Peterson <lunchtimemama at gmail.com> wrote:
>
> Hey Sébastien, thanks for lending a hand. Here's the situation:
>
> I'm using glib binaries from the OpenVista project [1].
>
> I initially used Gstreamer 0.10.13 binaries from freedesktop.org [2], but
> now I'm building Gstreamer 0.10.13 myself with Visual Studio so that I can
> debug the problem.
>
> I tried to initialize the Gstreamer that I built, but it failed with this
> error:
>
> > Debug Assertion Failed!
> > File: write.c
> > Line: 68
> > Expression: (_osfile(fh) & FOPEN)
>
> The error happens in line 72 of gstregistryxml.c, in the method
> gst_registry_save. The line is:
>
> > written = write (registry->cache_file, str, len);
>
> I think the error arises because registry->cache_file has the value 3.
> registry->cache_file is assigned on line 849 of gstregistryxml.c in the
> method gst_registry_xml_write_cache. The line is:
>
> > registry->cache_file = g_mkstemp (tmp_location);
>
> Prior to execution of this line, registry->cache_file is 0. After
> execution, it is 3. Someone on IRC advised me that this is a problem having
> to do with the fact that I'm building Gstreamer myself, but not glib.
> Unfortunately I'm not able to build glib for a number of reasons, so I just
> got around this problem by inserting
>
> > goto fail;
>
> before the registry->cache_file assignment. Gstreamer now initializes.
>
> Now to the playback problem. Banshee playback is handled in a C library
> called libbanshee. The relevant file is gst-playback-0.10.c [3]. When a
> song is played in the interface, the method gst_playback_open is called, and
> then gst_playback_play (see gst-playback-0.10.c). The error occurs while
> executing gst_playback_play.
>
> I've traced the problem to the method gst_base_src_start in gstbasesrc.con line 1986:
>
> >     result = bclass->start (basesrc);
>
> I'm not able to enter that function while debugging (what code is this
> pointing to?) but when it returns, result is 0. I can provide loads of stack
> trace info or variable values, but I don't know what would be helpful for
> you to know. I don't understand what much of the code is doing, but I do
> know that this is happening during a pad activation (whatever that is).
>
> Thanks again for helping out and let me know what other info I can
> provide.
>
> Best,
> Scott
>
> [1]
> https://sourceforge.net/project/showfiles.php?group_id=74626&package_id=223067
> [2] http://gstreamer.freedesktop.org/pkg/windows/releases/
> [3]
> http://svn.gnome.org/viewcvs/banshee/trunk/banshee/libbanshee/gst-playback-0.10.c?view=markup
>
>
> On 6/28/07, Sébastien Moutte <sebastien at moutte.net> wrote:
> >
> > Hey Scott,
> >
> > I'll be happy to help you making Banshee work with Gstreamer in Windows
> > if I can.
> > What's the status of the problems you were having ?
> > This error "GStreamer resource error: OpenRead" makes me think about a
> > LIBC problem as there are some incompatiblities (with files descriptors
> > for ie) between msvcrt.dll and newer versions.
> > What binaries of GStreamer are you using ?
> >
> > Regards,
> > Sebastien
> >
> > Scott Peterson a écrit :
> > > Hey GStreamer folks! I'm porting the music app Banshee [1] to Windows
> > > as a project for the Google Summer of Code. Banshee uses gstreamer for
> > > its playback backend so I'm now in the process of making that work on
> > > Windows. Unfortunately, I'm having a bit of trouble. I'll be fully
> > > investigating the issue come next week, but I thought I'd start my
> > > quest be making contact with the mailing list. I've summarized the
> > > trouble I'm having on our Summer of Code list [2] so if anyone has a
> > > spare moment and wouldn't mind lending a hand to a gstreamer newcomer,
> > > I'd appreciate any input you might have. Thanks!
> > >
> > > [1] http://banshee-project.org/Main_Page
> > > [2]
> > >
> > http://groups.google.com/group/mono-soc-2007/browse_thread/thread/d1d8510fb208bad
> > > <http://groups.google.com/group/mono-soc-2007/browse_thread/thread/d1d8510fb208bad
> > >
> > >
> > > --
> > > Scott.
> > >
> > ------------------------------------------------------------------------
> > >
> > >
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> >
>


-- 
Scott.
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