Several questions on osxvideosink
4ernov at gmail.com
Sat Jul 6 05:03:34 PDT 2013
some time ago I fixed some minor problems in osxvideosink, but there're some
more remaining ones which I'm working at now. There're also some questions on
code and structure of osxvideosink which I hope someone could answer.
1. There's a piece of code under RUN_NS_APP_THREAD definition. What's the exact
purpose of that? If I got it right, it tries to use NS application main loop
instead of Glib main loop to make the element work even if Glib main loop is
not running. But is there any point to have that? I believe, all the rest of
GStreamer elements and core wouldn't work without Glib main loop rotating.
Please, correct me if I'm wrong.
2. When ontaining a window to display video
(gst_osx_video_sink_osxwindow_create() function in osxvideosink.m) it first
posts 'have-ns-view' message in hope that someone would receive it and take
inner GLView (actually responsible for displaying video) to subviews. 'Embed'
property also serves this purpose. Is it really needed functionality given
that we have GstVideoOverlay interface with methods exactly for this case? The
problem is that it obfuscates the code of
gst_osx_video_sink_osxwindow_create() considerably as we have to wait for
answer both on 'have-ns-view' message and
3. Would anyone mind if we split osxvideosink.h(.m) to two files with one have
C code of helper functions and another one have Objective C code of
GstOSXVideoSinkObject and some other objects? I think, it could make the whole
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