[Bug 732178] glcolorscale: add support for passthrough on same caps

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=732178
  GStreamer | gst-plugins-bad | git

--- Comment #7 from Julien Isorce <julien.isorce at gmail.com> 2014-06-25 06:48:07 UTC ---
commit 13023f297507cf503e758271ce0797e22e5f92ae
Author: Julien Isorce <julien.isorce at collabora.co.uk>
Date:   Tue Jun 24 19:37:17 2014 +0100

    glcolorscale: do passthrough on same caps

    See https://bugzilla.gnome.org/show_bug.cgi?id=732178

commit f63c91ab714ec145e43fb1ddb76368a7d2fff5db
Author: Julien Isorce <julien.isorce at collabora.co.uk>
Date:   Tue Jun 24 19:35:01 2014 +0100

    glfilter: handle NULL decide_query which means passthrough

    See https://bugzilla.gnome.org/show_bug.cgi?id=732178

commit 045aa4ee7ec58450db4b0cfd8153fafcc4d456d3
Author: Julien Isorce <julien.isorce at collabora.co.uk>
Date:   Tue Jun 24 19:23:01 2014 +0100

    glfilter: prepend intersection to src caps

    Prefer to stay in the same memory space if possible.
    Also it let a chance to do passthrough.

    See https://bugzilla.gnome.org/show_bug.cgi?id=732178

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