glcolorconvert

[Hamdi]

Hi,

Can someone gives me an example of a pipeline which converts between any colorspace to another with the opengl element glcolorconvert.

Thanks.

Best Regards.

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[Nicolas Dufresne-3]

Le jeudi 25 juin 2015 à 13:37 +0100, Hamdi Rakkez a écrit :
> Can someone gives me an example of a pipeline which converts between
> any colorspace to another with the opengl element glcolorconvert.

There was a API change in these unstable elements between 1.4 and 1.5
(dev). Which version are you using ? That answer would be totally
different.

Nicolas
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[Hamdi]

I am using gstreamer-1.5.1

On Thu, Jun 25, 2015 at 3:16 PM, Nicolas Dufresne <[hidden email]> wrote:

Le jeudi 25 juin 2015 à 13:37 +0100, Hamdi Rakkez a écrit :
> Can someone gives me an example of a pipeline which converts between
> any colorspace to another with the opengl element glcolorconvert.

There was a API change in these unstable elements between 1.4 and 1.5
(dev). Which version are you using ? That answer would be totally
different.

Nicolas
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[Nicolas Dufresne-3]

Le jeudi 25 juin 2015 à 15:22 +0100, Hamdi Rakkez a écrit :
> I am using gstreamer-1.5.1

So in this case, you need the glupload/gldownload elements in your
pipeline (this first pipeline is just so you understand, see next one):

gst-launch-1.0 videotestsrc ! video/x-raw,format=NV12 \
  ! glupload ! glcolorconvert ! gldownload \
    ! video/x-raw,format=BGRx ! ximagesink

Or, as a convenience, you can use glfilterbin:

gst-launch-1.0 videotestsrc ! video/x-raw,format=NV12 \
  ! glfilterbin filter=glcolorconvert \
  ! video/x-raw,format=BGRx ! ximagesink

In some cases, you want to manually use upload/download so you control
when the data moves from memory to GL space (this transition can be
expensive). But if you want to use a filter as if it was doing normal
memory IO, glfilterbin is best.

Nicolas
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[Jtis]

Hi,

Sorry but would that be possible to have the answer for the same question but for gstreamer version 1.4.4?

Thanks you by advance,

Jérôme.