Original commit message from CVS:
2004-03-15 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/play.c: (gst_play_get_framerate),
(gst_play_get_sink_element): First draft of gst_play_get_framerate.
* gst-libs/gst/play/play.h:
Original commit message from CVS:
* configure.ac:
* gst-libs/gst/gconf/Makefile.am:
* pkgconfig/Makefile.am:
move gstreamer-gconf pkgconfig files to pkgconfig/ dir. Make sure
they get rebuilt properly
* configure.ac:
when checking for vorbis, try pkgconfig first.
* gst/modplug/gstmodplug.cc:
add fixate function
Original commit message from CVS:
* gst-libs/gst/xoverlay/xoverlay.c: (gst_x_overlay_set_xwindow_id),
(gst_x_overlay_got_xwindow_id):
* gst-libs/gst/xoverlay/xoverlay.h:
replace XID with unsigned long to get rid of the xlibs dependency in
XOverlay (fixes#137004)
Original commit message from CVS:
* ext/lcs/Makefile.am: Fix so that the lcs colorspace plugin
doesn't conflict with the internal colorspace plugin.
* gst-libs/gst/audio/make_filter: Use `` instead of $() to
satisfy the crappy-ass shell shipped by a certain vendor.
* gst/videofilter/make_filter: same (bug #135299)
Original commit message from CVS:
* ext/faad/gstfaad.c: (gst_faad_init), (gst_faad_srcgetcaps),
(gst_faad_chain): Fix negotiation.
* ext/librfb/gstrfbsrc.c: (gst_rfbsrc_handle_src_event): Add
key and button events.
* gst-libs/gst/floatcast/floatcast.h: Fix a minor bug in this
dung heap of code.
* gst-libs/gst/gconf/gstreamer-gconf-uninstalled.pc.in: gstgconf
depends on gconf
* gst-libs/gst/gconf/gstreamer-gconf.pc.in: same
* gst-libs/gst/play/play.c: (gst_play_pipeline_setup),
(gst_play_video_fixate), (gst_play_audio_fixate): Add a fixate
function to encourage better negotiation, particularly between
audioconvert and osssink.
* gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_chain):
* gst/qtdemux/qtdemux.c: (qtdemux_parse_trak): Make some debugging
more important.
* gst/typefind/gsttypefindfunctions.c: Fix mistake in flash
typefinding.
* gst/vbidec/vbiscreen.c: Add glib header
* pkgconfig/gstreamer-play.pc.in: Depends on gst-interfaces.
Original commit message from CVS:
2004-03-03 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/gconf/gconf.c: (gst_gconf_get_default_video_sink):
Using ximagesink as a default if no gconf key found. We should
probably consider using alsasink instead of osssink for the audio
part.
Original commit message from CVS:
2004-02-27 Benjamin Otte <otte@gnome.org>
* gst-libs/gst/audio/audio.h:
add macro to make sure header isn't included twice
* gst/asfdemux/gstasfdemux.c: (gst_asf_demux_process_chunk):
don't use gst_buffer_free
* gst/playondemand/filter.func:
don't usae gst_data_free. Free data only once.
Original commit message from CVS:
* gst-libs/gst/colorbalance/Makefile.am:
* gst-libs/gst/mixer/Makefile.am:
* gst-libs/gst/tuner/Makefile.am:
* gst/level/Makefile.am: -marshal.[ch] and -enum.[ch] files
should not be disted, -marshal.h files should not be installed,
and -enum.h files _should_ be installed. Fix to make this the
case.
Original commit message from CVS:
2004-02-15 Julien MOUTTE <julien@moutte.net>
* examples/gstplay/player.c: (got_eos), (main): Adding some
output for debugging.
* gst-libs/gst/play/play.c: (gst_play_state_change): Stop our
timeouts if we go to any state different from PLAYING.
* gst-libs/gst/riff/riff-read.c: (gst_riff_read_seek): Fix some
more EOS bugs in riff lib.
Original commit message from CVS:
2004-02-14 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/play.c: (gst_play_connect_visualization): Disable
visualization until i find a way to fix switch correctly.
* gst-libs/gst/riff/riff-read.c: (gst_riff_peek_head): Fix a bug when
EOS arrives.
* gst/switch/gstswitch.c: (gst_switch_release_pad),
(gst_switch_request_new_pad), (gst_switch_poll_sinkpads),
(gst_switch_loop), (gst_switch_dispose), (gst_switch_class_init):
Reworked switch to get a more correct behaviour with events and refing
of data stored in sinkpads.
* gst/switch/gstswitch.h: Adding an eos flag for every sinkpad so that
we don't pull from a pad in EOS.
Original commit message from CVS:
2004-02-08 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst-libs/gst/colorbalance/Makefile.am:
* gst-libs/gst/navigation/Makefile.am:
* gst-libs/gst/xoverlay/Makefile.am:
remove unused GST_OPT_CFLAGS from Makefiles
include X_CFLAGS and X_LIBS in xoverlay. (#131948)
Original commit message from CVS:
2004-02-05 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst-libs/gst/riff/riff-read.c: (gst_riff_read_info):
use correct GST_TAG_ENCODER tag
Original commit message from CVS:
2004-02-04 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/xoverlay/xoverlay.c: (gst_x_overlay_expose):
* gst-libs/gst/xoverlay/xoverlay.h: Adding the _expose method to tell
an overlay to redraw the image because it has been exposed.
* sys/ximage/ximagesink.c: (gst_ximagesink_ximage_destroy),
(gst_ximagesink_ximage_put), (gst_ximagesink_expose),
(gst_ximagesink_xoverlay_init), (gst_ximagesink_init):
* sys/ximage/ximagesink.h: Implement expose method from XOverlay
interface
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xvimage_destroy),
(gst_xvimagesink_xvimage_put), (gst_xvimagesink_expose),
(gst_xvimagesink_xoverlay_init), (gst_xvimagesink_init):
* sys/xvimage/xvimagesink.h: Implement expose method from XOverlay
interface
Original commit message from CVS:
* gst-libs/gst/audio/.cvsignore:
Ignore generated file.
* gst-libs/gst/audio/Makefile.am:
Do not install example filter.
Original commit message from CVS:
2004-02-02 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/play.c: (gst_play_pipeline_setup),
(gst_play_set_audio_sink): Moving volume in the audio thread for
instantaneous volume change. Maybe i will add another volume in front
of visualization later, not sure yet though.
Original commit message from CVS:
2004-01-30 Ronald Bultje <rbultje@ronald.bitfreak.net>
* gst-libs/gst/riff/riff-read.c: (gst_riff_peek_head),
(gst_riff_read_seek):
* gst/matroska/ebml-read.c: (gst_ebml_read_element_id),
(gst_ebml_read_seek):
Fix event handling.
Original commit message from CVS:
2004-01-29 Julien MOUTTE <julien@moutte.net>
* ext/gnomevfs/gstgnomevfssrc.c: (gst_gnomevfssrc_get): Fixing seeking
emiting FLUSH and even before DISCONT.
* gst-libs/gst/play/gstplay.c: (gst_play_seek_to_time): Fix seeking to
get the best instant seeking as possible yay!
Original commit message from CVS:
2004-01-28 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/gstplay.c: (gst_play_seek_to_time): seek on video
sink element first.
* gst/videoscale/gstvideoscale.c:
(gst_videoscale_handle_src_event): Fixing src event handler.
Original commit message from CVS:
2004-01-27 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/gstplay.c: (gst_play_tick_callback),
(gst_play_seek_to_time): Fixing the way to get current position.
Original commit message from CVS:
2004-01-26 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst-libs/gst/audio/audio.h:
remove buffer-frames from audio caps
* gst/audioconvert/gstaudioconvert.c:
fix plugin to really work.
Original commit message from CVS:
2004-01-25 Ronald Bultje <rbultje@ronald.bitfreak.net>
* gst-libs/gst/mixer/mixer.c:
* gst-libs/gst/propertyprobe/propertyprobe.c:
* gst-libs/gst/tuner/tuner.c: (gst_tuner_find_norm_by_name),
(gst_tuner_find_channel_by_name):
* gst-libs/gst/tuner/tuner.h:
Add gtk-doc style comments. Also fix a function name.
Original commit message from CVS:
2004-01-25 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/gstplay.c: (gst_play_pipeline_setup),
(gst_play_identity_handoff), (gst_play_set_location),
(gst_play_set_visualization), (gst_play_connect_visualization): Another
try in visualization implementation. Still have an issue with switch
blocking when pulling from video_queue and only audio comes out of
spider.
* gst/switch/gstswitch.c: (gst_switch_release_pad),
(gst_switch_poll_sinkpads), (gst_switch_class_init): Implementing pad
release method. And check if the pad is usable before pulling.
Original commit message from CVS:
2004-01-25 Ronald Bultje <rbultje@ronald.bitfreak.net>
* gst-libs/gst/riff/riff-read.c: (gst_riff_read_info):
Additional pad usability check.
* gst/mpeg1videoparse/gstmp1videoparse.c: (gst_mp1videoparse_init),
(mp1videoparse_find_next_gop), (gst_mp1videoparse_time_code),
(gst_mp1videoparse_real_chain):
Fix MPEG video stream parsing. The original plugin had several
issues, including not timestamping streams where the source was
not timestamped (this happens with PTS values in mpeg system
streams, but MPEG video is also a valid stream on its own so
that needs timestamps too). We use the display time code for that
for now. Also, if one incoming buffer contains multiple valid
frames, we push them all on correctly now, including proper EOS
handling. Lastly, several potential segfaults were fixed, and we
properly sync on new sequence/gop headers to include them in next,
not previous frames (since they're header for the next frame, not
the previous). Also see #119206.
* gst/mpegaudioparse/gstmpegaudioparse.c: (gst_mp3parse_chain),
(bpf_from_header):
Move caps setting so we only do it after finding several valid
MPEG-1 fraes sequentially, not right after the first one (which
might be coincidental).
* gst/typefind/gsttypefindfunctions.c: (mpeg1_sys_type_find),
(mpeg_video_type_find), (mpeg_video_stream_type_find),
(plugin_init):
Add unsynced MPEG video stream typefinding, and change some
probability values so we detect streams rightly. The idea is as
follows: I can have an unsynced system stream which contains
video. In the current code, I would randomly get a type for either
system or video stream type found, because the probabilities are
being calculated rather randomly. I now use fixed values, so we
always prefer system stream if that was found (and that is how it
should be). If no system stream was found, we can still identity
the stream as video-only.
Original commit message from CVS:
2004-01-23 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/gstplay.c: (gst_play_pipeline_setup),
(gst_play_set_location), (gst_play_seek_to_time),
(gst_play_set_audio_sink), (gst_play_set_visualization),
(gst_play_connect_visualization), (gst_play_get_sink_element): Reworked
the pipeline from scratch. Visualization is back and switch went out as
i realized it was not possible to use the way i wanted.
* sys/ximage/ximagesink.c: (gst_ximagesink_imagepool_clear),
(gst_ximagesink_change_state), (gst_ximagesink_dispose): Move xcontext
clearing in state change from READY to NULL. So that one can clean the
X ressources keeping the element.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xcontext_get),
(gst_xvimagesink_imagepool_clear), (gst_xvimagesink_change_state),
(gst_xvimagesink_colorbalance_set_value),
(gst_xvimagesink_colorbalance_get_value),
(gst_xvimagesink_set_property), (gst_xvimagesink_dispose),
(gst_xvimagesink_init): Same xcontext cleaning than ximagesink in state
change from READY to NULL and fixed some stupid bugs in colorbalance
get/set values. Also added the following feature : when nobody tries to
set some values to the colorbalance levels before the xcontext is
grabbed, then when creating channels list from Xv attributes we set the
internal values to the Xv defaults. This way we handle buggy Xv drivers
that set default hue values far from the middle of the range (Thanks
to Jon Trowbridge for pointing that issue).
* sys/xvimage/xvimagesink.h: Adding a cb_changed boolean to know if
colorbalance levels have been set before xcontext is grabbed.
Original commit message from CVS:
2004-01-16 Ronald Bultje <rbultje@ronald.bitfreak.net>
* gst-libs/gst/Makefile.am:
restructure so having local patches works easier.
Original commit message from CVS:
* gst-libs/gst/audio/Makefile.am:
Add gstaudiofiltertemplate.c and building of gstaudiofilterexample.c
from the template.
* gst-libs/gst/audio/gstaudiofilter.c:
* gst-libs/gst/audio/gstaudiofilter.h:
Add bytes_per_sample and size and n_samples calculation.
* gst-libs/gst/audio/gstaudiofilterexample.c:
Remove, now autogenerated.
* gst-libs/gst/audio/gstaudiofiltertemplate.c:
Moved from gstaudiofilterexample, object name changed, code added
so that it actually works.
* gst-libs/gst/audio/make_filter:
Script to build an audiofilter subclass from the template.
* gst/colorspace/Makefile.am:
* gst/colorspace/yuv2yuv.c:
Remove file, since it's GPL, and we don't use it.
Original commit message from CVS:
2004-01-15 Julien MOUTTE <julien@moutte.net>
* ext/alsa/gstalsamixer.c: (gst_alsa_mixer_interface_init): Setting
mixer interface type to HARDWARE.
* gst-libs/gst/mixer/mixer.c: (gst_mixer_class_init): Adding a default
type to SOFTWARE.
* gst-libs/gst/mixer/mixer.h: Adding mixer interface type and macro.
* gst-libs/gst/mixer/mixertrack.h: Adding mixertrack flag SOFTWARE.
* gst/volume/gstvolume.c: (gst_volume_interface_supported),
(gst_volume_interface_init), (gst_volume_list_tracks),
(gst_volume_set_volume), (gst_volume_get_volume),
(gst_volume_set_mute), (gst_volume_mixer_init),
(gst_volume_dispose), (gst_volume_get_type), (volume_class_init),
(volume_init): Implementing mixer interface.
* gst/volume/gstvolume.h: Adding tracklist for mixer interface.
* sys/oss/gstosselement.c: (gst_osselement_get_type),
(gst_osselement_change_state): Removing some trailing commas in
structures.
* sys/oss/gstossmixer.c: (gst_ossmixer_interface_init): Setting mixer
interface type to HARDWARE.
* sys/v4l/gstv4lcolorbalance.c:
(gst_v4l_color_balance_interface_init): Setting colorbalance interface
type to HARDWARE.
* sys/v4l2/gstv4l2colorbalance.c:
(gst_v4l2_color_balance_interface_init): Setting colorbalance
interface type to HARDWARE.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_chain): use exactly the
same code than ximagesink for event handling.
Original commit message from CVS:
2004-01-14 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/colorbalance/colorbalance.c:
(gst_color_balance_class_init): Adding a default type.
* gst-libs/gst/colorbalance/colorbalance.h: Adding a macro to access
the type.
* gst/videofilter/gstvideobalance.c: (gst_videobalance_get_type),
(gst_videobalance_dispose), (gst_videobalance_class_init),
(gst_videobalance_init), (gst_videobalance_interface_supported),
(gst_videobalance_interface_init),
(gst_videobalance_colorbalance_list_channels),
(gst_videobalance_colorbalance_set_value),
(gst_videobalance_colorbalance_get_value),
(gst_videobalance_colorbalance_init): Implementing colorbalance
interface.
* gst/videofilter/gstvideobalance.h: Adding colorbalance channels
list.
* sys/ximage/ximagesink.c: (gst_ximagesink_set_xwindow_id): Fixing a
bug which was triggering a BadAccess X error when setting an overlay
before pad was really negotiated.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_colorbalance_init):
Using the colorbalance type macro.
Original commit message from CVS:
2004-01-14 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst-libs/gst/play/gstplay.c: (gst_play_tick_callback):
Query the audio element to get the time, not the clock. We're
interested in the element's time here.
Original commit message from CVS:
2004-01-13 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/colorbalance/colorbalance.h: Adding a type to the
colorbalance interface stating if it is hardware based or software
based.
* gst/videofilter/gstvideobalance.c: (gst_videobalance_planar411):
Removing a trailing comma.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xcontext_get),
(gst_xvimagesink_colorbalance_init): Integrating a patch from Jon
Trowbridge <trow@ximian.com> querying Xv adaptor for min/max value as
the documentation seems to be wrong on the -1000 to 1000 interval.
Original commit message from CVS:
2004-01-12 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/colorbalance/colorbalancechannel.c:
(gst_color_balance_channel_dispose): Adding safety check in dispose
method.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xcontext_get),
(gst_xvimagesink_xcontext_clear),
(gst_xvimagesink_interface_supported),
(gst_xvimagesink_colorbalance_list_channels),
(gst_xvimagesink_colorbalance_set_value),
(gst_xvimagesink_colorbalance_get_value),
(gst_xvimagesink_colorbalance_init), (gst_xvimagesink_get_type):
Adding colorbalance interface support to set XV parameters such as
HUE, BRIGHTNESS, CONTRAST, SATURATION.
* sys/xvimage/xvimagesink.h: Adding the channels list for colorbalance
interface.
Original commit message from CVS:
2004-01-12 Julien MOUTTE <julien@moutte.net>
* gst-libs/gst/play/gstplay.c: (gst_play_get_sink_element): When
analyzing the pads of an element the bin is mostly in READY state so
no caps were negotiated. This helper function needs to work with
_get_caps directly then. I was not freeing them though, added that to
fix the mem leak.
Original commit message from CVS:
Remove all usage of gst_pad_get_caps(), and replace it with
gst_pad_get_allowed_caps() or gst_pad_get_negotiated_cap().
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcolorspace.c: (gst_ffmpegcsp_chain):
Implementing gst_pad_alloc_buffer to use optimized buffer allocation.
* gst-libs/gst/xoverlay/xoverlay.c:
(gst_x_overlay_got_desired_size): Updating doc for the xid being 0.
* gst/videoscale/gstvideoscale.c: (gst_videoscale_chain):
Implementing gst_pad_alloc_buffer to use optimized buffer allocation.
* gst/videotestsrc/gstvideotestsrc.c: (gst_videotestsrc_get):
Implementing gst_pad_alloc_buffer to use optimized buffer allocation.
* sys/ximage/ximagesink.c: (gst_ximagesink_chain),
(gst_ximagesink_buffer_free), (gst_ximagesink_buffer_alloc),
(gst_ximagesink_set_xwindow_id), (gst_ximagesink_init): Implementing
the bufferalloc_function to replace bufferpools, fixing the XOverlay
interface implementation to handle xid being 0 and fix some bugs
triggered by Benjamin's testcase.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_chain),
(gst_xvimagesink_buffer_free), (gst_xvimagesink_buffer_alloc),
(gst_xvimagesink_set_xwindow_id), (gst_xvimagesink_init): Implementing
the bufferalloc_function to replace bufferpools, fixing the XOverlay
interface implementation to handle xid being 0 and fix some bugs
triggered by Benjamin's testcase.
Original commit message from CVS:
2004-01-09 Ronald Bultje <rbultje@ronald.bitfreak.net>
* ext/divx/gstdivxenc.c: (gst_divxenc_init):
Use explicit caps - fix capsnego.
* ext/xvid/gstxviddec.c:
* ext/xvid/gstxvidenc.c:
Remove macro-inside-macro which caused compile errors.
* gst-libs/gst/riff/riff-read.c: (gst_riff_read_header):
Error out if it's not a RIFF file. Else we error out without
gst_element_error() which is not good...
Original commit message from CVS:
* examples/gstplay/Makefile.am: Adding the interface library.
* gst-libs/gst/play/Makefile.am: Adding the interface library.
* gst-libs/gst/play/gstplay.c: (gst_play_set_video_sink): Connecting tothe XOverlay size signal instead of GstVideoSink.
* gst-libs/gst/play/gstplay.h: Including the XOverlay interface to check GST_IS_X_OVERLAY before signal connect.
* gst-libs/gst/video/gstvideosink.c: (gst_videosink_class_init):
Removing the have_video_size signal.
* gst-libs/gst/video/gstvideosink.h: Removing the have_video_size signal and associated public method.
* sys/ximage/ximagesink.c: (gst_ximagesink_handle_xevents),
(gst_ximagesink_sinkconnect): Using XOverlay public method to fire size
signal.
* sys/xvideo/xvideosink.c: (gst_xvideosink_sinkconnect),
(gst_xvideosink_xwindow_new): Using XOverlay public method to fire size
signal.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_sinkconnect):
Using XOverlay public method to fire size signal.
Original commit message from CVS:
* ext/dv/gstdvdec.c: (gst_dvdec_loop):
Fix caps negotiation.
* ext/dvdnav/dvdnavsrc.c: (dvdnavsrc_class_init),
(dvdnavsrc_update_buttoninfo), (dvdnavsrc_get),
(dvdnavsrc_get_event_mask), (dvdnav_handle_navigation_event),
(dvdnavsrc_event):
* ext/mpeg2dec/gstmpeg2dec.c:
* gst-libs/gst/navigation/navigation.c:
(gst_navigation_send_key_event), (gst_navigation_send_mouse_event):
* gst-libs/gst/navigation/navigation.h:
* gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_handle_src_event):
* sys/ximage/ximagesink.c: (gst_ximagesink_handle_xevents):
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_handle_xevents):
Super-simple first version of mouse and keyboard events. Clicking
on a DVD menu now works, although it may not take you where you
expected.
* gst/sine/gstsinesrc.c: (gst_sinesrc_src_fixate):
* gst/videotestsrc/gstvideotestsrc.c:
(gst_videotestsrc_src_fixate):
These fixate functions were broken - they never actually
fixated :)
Original commit message from CVS:
2004-01-06 Ronald Bultje <rbultje@ronald.bitfreak.net>
* ext/shout/gstshout.c: (gst_icecastsend_base_init),
(gst_icecastsend_init):
fix for new caps system.
* gst-libs/gst/mixer/mixertrack.h:
* sys/oss/gstossmixer.c: (gst_ossmixer_build_list):
Add 'master track' flag (for tools like ACME that only want to
change the main volume).
Original commit message from CVS:
2004-01-04 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst-libs/gst/xoverlay/xoverlay.c: (gst_x_overlay_base_init),
(gst_x_overlay_got_xwindow_id), (gst_x_overlay_get_desired_size),
(gst_x_overlay_got_desired_size):
* gst-libs/gst/xoverlay/xoverlay.h:
Add optional "desired size" signal and querying.
Original commit message from CVS:
* examples/gstplay/player.c: (got_time_tick), (got_stream_length),
(got_video_size), (main): using g_print instead of g_message.
* gst-libs/gst/play/gstplay.c: (gst_play_pipeline_setup): Fixing EOS
signal which was not emitted because of "switch" element added to the
bin but not connected. (Removing from the bin temporarily)
Original commit message from CVS:
* configure.ac: X_DISPLAY_MISSING is set to 1 if AC_PATH_XTRA fails to
find X development files. I don't understand the previous tests and
they fail on my debian/ppc unstable. This one works.
* examples/gstplay/player.c: (main): Set the pipeline to READY before
exiting.
* gst-libs/gst/play/gstplay.c: (gst_play_get_length_callback),
(gst_play_set_video_sink), (gst_play_set_audio_sink),
(gst_play_set_visualization): Add some safety checks in set_ methods
and state_change. This was throwing some ugly CRITICAL messages when
pipeline was getting disposed and casts were failing.
