[gst-devel] GStreamer on Windows
Scott Peterson
lunchtimemama at gmail.com
Fri Jul 6 00:27:50 CEST 2007
I've replied inline.
On 7/3/07, Sébastien Moutte <sebastien at moutte.net> wrote:
>
> What version of Visual Studio are you using to build GStreamer ?
> Depending on the version used, GStreamer libraries will be linked on
> different version of MSVCRT.
> You must link on the same version of the libc for GLIB and GSTREAMER
> (you can't merge different version and you can't merge DEBUG version
> with RELEASE version).
I'm using VS2005 which links to MSVCR80.DLL. How can I specify the use of an
older version of the C runtime? I tried changing /MT to /MD, but that just
removed the MSVCR80 reference; it did not add a reference to MSVCRT.dll.
Dependency Walker is a good tool to check your dependencies
> (http://www.dependencywalker.com/)
> One more thing, have you made some tests with gst-launch with the
> version of GStreamer you built ? Because if there is a problem between
> GStreamer and Glib dependencies, you will get error with gst-launch and
> gst-inspect.
When I try to use gst-launch with the gstreamer binaries that I build
myself, I get the same initialization problem (probably related to the
MSVCRT problem). When I use gst-launch with the distribution binaries,
here's the error I get:
> gst-launch-0.10.exe filesrc location=dance.mp3 ! mad ! autoaudiosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /pipeline0/filesrc0: Internal data flow error.
Additional debug info:
E:\devel-cvs\src\gstreamer\libs\gst\base\gstbasesrc.c(1811): (function) ():
/pipeline0/filesrc0:
streaming task paused, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...
When I try to open that file with the test app gstplayer [1], it works fine.
Thanks,
Scott
[1] http://perso.orange.es/moutte983/gstreamer/
Scott Peterson a écrit :
> > Is there anything else I could provide or do that would be of use?
> >
> > On 6/29/07, *Scott Peterson* <lunchtimemama at gmail.com
> > <mailto: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
> > <http://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.c on 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
> > <
> 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
> > <
> 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
> > <mailto: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
> > <
> http://groups.google.com/group/mono-soc-2007/browse_thread/thread/d1d8510fb208bad
> >>
> > >
> > > --
> > > Scott.
> > >
> ------------------------------------------------------------------------
> > >
> > >
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> > >
> > > _______________________________________________
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> > > gstreamer-devel at lists.sourceforge.net
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> > > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
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> > >
> >
> >
> >
> >
> > --
> > Scott.
>
--
Scott.
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