https://bugs.webkit.org/show_bug.cgi?id=116042

Patch by Víctor Manuel Jáquez Leal <vjaquez@igalia.com> on 2013-06-18
Reviewed by Philippe Normand.

This patch prepares more quickly the texture when the video frame is
already in the GPU memory.

It is done using a new buffer's metadata available in GStreamer 1.2,
and its purpose is to upload buffers into a OpenGL texture.

If the decoder provides buffers with this metadata, the buffer will be
uploaded into the texture used for the video display and it will be
rendered, avoiding a expensive mem copies. This is particularly useful
for Full HD videos, where all the processing and display will be done
in the GPU.

No new tests, covered by existing tests.

* platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:
(WebCore::MediaPlayerPrivateGStreamerBase::MediaPlayerPrivateGStreamerBase):
(WebCore::MediaPlayerPrivateGStreamerBase::updateTexture):
* platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h:
* platform/graphics/gstreamer/VideoSinkGStreamer.cpp:
(webkitVideoSinkProposeAllocation):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@151673 268f45cc-cd09-0410-ab3c-d52691b4dbfc