Could I use fbdevsink as the linux framebuffer video sink?

[alison]

      I want to use gstreamer to play a avi format file on my ARM processor. The OS is Linux. I have written the framebuffer driver for the LCD controller and used a simple application to test it already. But when I use gstreamer to test as below, there are some errors. I am not sure if I can use "fbdevsink" as the linux framebuffer video sink. Any one could give me some advice? Thanks.


# gst-launch -v filesrc location="cc.avi" ! decodebin ! fbdevsink

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

(gst-launch-0.10:588): GStreamer-WARNING **: pad fbdevsink0:sink returned caps w
hich are not a real subset of its template caps

(gst-launch-0.10:588): GStreamer-WARNING **: pad fbdevsink0:sink returned caps w
hich are not a real subset of its template caps

(gst-launch-0.10:588): GStreamer-WARNING **: pad fbdevsink0:sink returned caps w
hich are not a real subset of its template caps
^CCaught interrupt --
(gst-launch-0.10:588): GLib-WARNING **: poll(2) failed due to: Unknown error 516
.
handling interrupt.
Interrupt: Stopping pipeline ...
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...

[Stefan Sauer]

On 04/27/2012 04:36 AM, alison wrote:

>       I want to use gstreamer to play a avi format file on my ARM processor.
> The OS is Linux. I have written the framebuffer driver for the LCD
> controller and used a simple application to test it already. But when I use
> gstreamer to test as below, there are some errors. I am not sure if I can
> use "fbdevsink" as the linux framebuffer video sink. Any one could give me
> some advice? Thanks.
>
>
> # gst-launch -v filesrc location="cc.avi" ! decodebin ! fbdevsink
>
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
>
> (gst-launch-0.10:588): GStreamer-WARNING **: pad fbdevsink0:sink returned
> caps w
> hich are not a real subset of its template caps

You will need to debug the interaction between fbdevsink  and your
driver. Run with GST_DEBUG="*fbdev*:5" and see where the messages come
from inside fbdevsink. Check what t gets from your driver and why it is
not happy about it.

Stefan

>
> (gst-launch-0.10:588): GStreamer-WARNING **: pad fbdevsink0:sink returned
> caps w
> hich are not a real subset of its template caps
>
> (gst-launch-0.10:588): GStreamer-WARNING **: pad fbdevsink0:sink returned
> caps w
> hich are not a real subset of its template caps
> ^CCaught interrupt --
> (gst-launch-0.10:588): GLib-WARNING **: poll(2) failed due to: Unknown error
> 516
> .
> handling interrupt.
> Interrupt: Stopping pipeline ...
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> FREEING pipeline ...
>
> --
> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Could-I-use-fbdevsink-as-the-linux-framebuffer-video-sink-tp4591607p4591607.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
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