[Bug 728872] GstGLBufferPool should avoid to allocate upload resources that are not going to be used for sure

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=728872
  GStreamer | gst-plugins-bad | git

Adrien SCH. <adrien.schwartzentruber> changed:

           What    |Removed                     |Added
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                 CC|                            |adrien.schwartzentruber at gma
                   |                            |il.com

--- Comment #6 from Adrien SCH. <adrien.schwartzentruber at gmail.com> 2015-01-06 16:48:54 UTC ---
Commit : dfc674514388a5646f2108ea5f1d4c464101c950 generate a side effect in the
following case : 

rtspsrc ! rtph264parse ! vaapidecode ! glcolorscale ! video/x-raw, format=BGRx,
width=640, height 480 ! videoconvert ! xvimagesink

Observation :  
The video stream contains a bigger image than the output stream of the
vaapidecode. This can be see by the arterfact at the image bottom. 

Hypothesis : 
The caps has been updated but the bufferpool not, images are correctly
processed but in a bigger buffer.

Correction : 
I tried to revert the commit on the 1.4.5 branch but it appears that something
else generate this behavior (something between
dfc674514388a5646f2108ea5f1d4c464101c950 and 1.4.5). 

Attached a screenshot of the image artefacts

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