Not doing so will cause buffers to be received by downstream without
a time base set.
We use the same method avimux uses to get access to the event when
collectpads got the sink event function.
https://bugzilla.gnome.org/show_bug.cgi?id=640323
Original commit message from CVS:
* ext/cairo/gsttextoverlay.c: (gst_textoverlay_render_text),
(gst_text_overlay_blit_1), (gst_text_overlay_blit_sub2x2),
(gst_textoverlay_video_chain), (gst_textoverlay_loop),
(gst_textoverlay_font_init), (gst_textoverlay_init),
(gst_textoverlay_set_property): Improvements to actually
render text as white on black outline on video, including
font selection and horizontal/vertical alignment. (Ronald's
christmas present)
* ext/cairo/gsttextoverlay.h:
Original commit message from CVS:
* configure.ac: add audioresample and cairo plugins. Remove
HAVE_MMX stuff, because it's not used.
* ext/Makefile.am: same
* ext/audioresample/Makefile.am: You are not ready for an
audio resampling element based on audioresample.
* ext/audioresample/gstaudioresample.c:
* ext/audioresample/gstaudioresample.h:
* ext/cairo/Makefile.am: You are not ready for overlay elements
based on cairo. Don't look too closely, these elements kinda
suck right now.
* ext/cairo/gstcairo.c: new
* ext/cairo/gsttextoverlay.c: new
* ext/cairo/gsttextoverlay.h: new
* ext/cairo/gsttimeoverlay.c: new
* ext/cairo/gsttimeoverlay.h: new
* gst-libs/gst/media-info/media-info-priv.h: fix compile
problem with compilers that don't support variadic macros.