[Bug 147931] GstArray subtraction not implemented

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=147931
  GStreamer | gstreamer (core) | git

Edward Hervey <bilboed> changed:

           What    |Removed                     |Added
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             Status|NEW                         |NEEDINFO
                 CC|                            |bilboed at gmail.com

--- Comment #15 from Edward Hervey <bilboed at gmail.com> 2013-07-18 05:02:44 UTC ---
(In reply to comment #14)
> Ok, I guess I found a case where it still doesn't work correctly...
> 
>   c2 = gst_caps_from_string
> ("audio/x-raw-int,channels=1;audio/x-raw-int,channels=2");
>   c1 = gst_caps_from_string ("audio/x-raw-int,channels=[1,2]");
>   gst_caps_merge (c2, c1);

  This results in "audio/x-raw-int,channels=[1,2]" ... which sounds correct to
me.

  Why is this considered wrong ?

>   GST_DEBUG ("merged: (%d) %" GST_PTR_FORMAT, gst_caps_get_size (c2), c2);
>   fail_unless (gst_caps_get_size (c2) == 2, NULL);
>   gst_caps_unref (c2);
> 
> 
> 
> This can be fixed by using simplified caps for checking if a structure is a
> subset of caps in gst_caps_merge_structure() but this will make negotiation
> even slower than it already is.

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