[gst-devel] v4l2src & glupload at only 12 FPS?

[Julien Isorce]

2010/3/5 Tristan Matthews <tristan at sat.qc.ca>

> 2010/3/5 Tristan Matthews <tristan at sat.qc.ca>
>
>>
>> I've reproduced the bug with dc1394src. It seems to be with glfilterglass,
>> this line has no problems:
>> gst-launch -v dc1394src ! ffmpegcolorspace !  glupload ! glfiltercube !
>> glimagesink
>> whereas this suffers from the same behaviour that alexandre describes
>> gst-launch -v dc1394src ! ffmpegcolorspace !  glupload ! glfiltercube !
>> glimagesink
>>
>>
> Typo in the last email, the second line should say glfilterglass. Here's my
> glxinfo:
> http://pastebin.com/8CJCz22t
>

glfilterglass uses shaders and glfiltercube not.

but according to your glxinfo you card+driver supports it.

try this:

GST_DEBUG=gldisplay:3 GST_GL_SHADER_DEBUG=1 GST_GL_WINDOW_DEBUG=1 gst-launch
-v
dc1394src ! "video/x-raw-rgb" ! glupload ! "video/x-raw-gl, width=320,
height=240" ! glfilterglass ! glimagesink

and this:

GST_DEBUG=gldisplay:3 GST_GL_SHADER_DEBUG=1 GST_GL_WINDOW_DEBUG=1 gst-launch
-v
videotestsrc ! "video/x-raw-yuv, format=(fourcc)I420" ! glupload !
glfilterglass ! glimagesink

Julien


>
>
>
>>
>>
>>>  Here is the command I have issued. The first time, it was without the
>>>> glfilterglass element.
>>>>
>>>> $ gst-launch -v v4l2src ! video/x-raw-yuv, format=\(fourcc\)I420,
>>>> framerate=\(fraction\)25/1, width=640, height=480 ! ffmpegcolorspace !
>>>> glupload  ! glfilterglass ! glimagesink
>>>>
>>>> I am not sure about how to read the actual frame rate, though. Any hint?
>>>>
>>>> Thanks,
>>>> Alex
>>>>
>>>>
>>>> > Julien
>>>> >
>>>> > 2010/3/3 Alexandre Quessy <alexandre at quessy.net>
>>>> >
>>>> >> Hello everyone,
>>>> >> I have worked on a prototype of a pipeline that uploads a live video
>>>> >> feed to an OpenGL texture and shares it with a context in SDL,
>>>> >> starting from the tests/examples/sdlshare.c file in gst-plugins-gl.
>>>> >> The source code can be found at
>>>> >> http://bitbucket.org/aalex/toonloop1/src/tip/src/sdlshare.cpp and
>>>> can
>>>> >> be compiled with the autotools.
>>>> >> (./autogen.sh && ./configure && make)
>>>> >>
>>>> >> It seems like the mesured framerate is consistently pretty slow. I
>>>> get
>>>> >> an average of 12 FPS on a Dual 2.2 GHz with the latest Ubuntu and a
>>>> >> decent Nvidia graphic card. I obtained 30 FPS on a faster machine
>>>> with
>>>> >> a better V4L2-supported video capture card.
>>>> >>
>>>> >> Does someone have suggestions on how I could overcome this ? I would
>>>> >> also prefer to have a framerate that's faster than the capture
>>>> card's.
>>>> >> 29.97 FPS is what NTSC gives me, whereas most projectors and monitors
>>>> >> can do up to 60 FPS. I have tried to set the "sync" property of the
>>>> >> fakesink element to FALSE, or TRUE, without success. Any other hint ?
>>>> >>
>>>> >> --
>>>> >> Alexandre Quessy
>>>> >> http://alexandre.quessy.net/
>>>> >>
>>>> >>
>>>> >>
>>>> ------------------------------------------------------------------------------
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>>>> >>
>>>> >
>>>> >
>>>> >
>>>> ------------------------------------------------------------------------
>>>> >
>>>> >
>>>> ------------------------------------------------------------------------------
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>>>> >
>>>> >
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>>>>
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>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Download Intel&#174; Parallel Studio Eval
>>> Try the new software tools for yourself. Speed compiling, find bugs
>>> proactively, and fine-tune applications for parallel performance.
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>>>
>>
>>
>> --
>> Tristan Matthews
>> email: tristan at sat.qc.ca
>> web: http://tristanswork.blogspot.com
>>
>
>
>
> --
> Tristan Matthews
> email: tristan at sat.qc.ca
> web: http://tristanswork.blogspot.com
>
>
> ------------------------------------------------------------------------------
> Download Intel&#174; Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> gstreamer-devel mailing list
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> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
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