VASurface to OpengGL Texture and other questions

[Jorge Fernandez Monteagudo]

Hi Victor,


>> There has been a lot of work on gstreamer-vaapi lately.
>>
>> If you use gstreamer 1.5 (current master) and gstreamer-vaapi 0.5.11 (current
>> master too), you'll have to specify EGL/GLES2 in order to use glimagesink:
>>
>> $ GST_GL_WINDOW=x11 GST_GL_API=gles2 GST_GL_PLATFORM=egl \
>>      gst-play-1.0 big_buck_bunny_1080p_h264.mov --videosink=glimagesink --interactive
>>
>> (my hardware doesn't support mpeg4)
>>
>> GLX/OpenGL doesn't support "zero-copy" (emphasis in the quotation marks) with
>> glimagesink, because the display and the GL context is not shared in that case
>> (https://bugzilla.gnome.org/show_bug.cgi?id=745233).
>>
>> But, you can use clutterautovideosink since it works in the same thread, so
>> there's no need to handle the GL context:
>>
>> $ gst-play-1.0 big_buck_bunny_1080p_h264.mov --videosink=clutterautovideosink
>>
>>
>> If you use gstreamer-vaapi 0.5.11 (current master) with gstreamer 1.4 and
>> clutter-gst3, mostly it will work with clutterautovideosink, such as above.
>>
>> With glimagesink there are some issues with the auto-negotiation (the decoder
>> pushes frames without link to the next element) when using playbin, but your
>> crafted pipeline should work, thought "zero-copy" is not guaranteed:
>>
>> $ gst-launch-1.0 filesrc location=big_buck_bunny_1080p_h264.mov ! qtdemux ! vaapidecode ! glimagesink
>
>UPDATE:
>
>You can use glimagesink in gstreamer 1.4 and gstreamer 0.5.11 but you have to
>disable the dinterlace and the soft-colorbalance:
>
>$ gst-launch-1.0 playbin uri=file:///patterns/big_buck_bunny_1080p_h264.mov video-sink=glimagesink flags=0x17

I've just installed gstreamer 0.5.11 with your patch to be able to be used with VA-API 0.35.0 but your pipeline is not working for me:

$ gst-launch-1.0 playbin uri=file:///home/jorge/develop/harware/videos/big_buck_bunny_1080p_surround.avi video-sink=glimagesink flags=0x17
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
libva info: VA-API version 0.35.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_0_32
Missing element: AC-3 (ATSC A/52) decoder
WARNING: from element /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: No decoder available for type 'audio/x-ac3, framed=(boolean)true, rate=(int)48000, channels=(int)6, alignment=(string)frame'.
Additional debug info:
gsturidecodebin.c(939): unknown_type_cb (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0
libva info: va_openDriver() returns 0
Got context from element 'vaapidecode': gst.vaapi.Display=context, display=(GstVaapiDisplay)NULL;
Got context from element 'glimagesink0': gst.gl.GLDisplay=context, gst.gl.GLDisplay=(GstGLDisplay)"\(GstGLDisplayX11\)\ gldisplayx11-0";
ERROR: from element /GstPlayBin:playbin0/GstPlaySink:playsink/GstBin:vbin/GstGLImageSink:glimagesink0: Failed to upload buffer
Additional debug info:
gstglimagesink.c(777): gst_glimage_sink_prepare (): /GstPlayBin:playbin0/GstPlaySink:playsink/GstBin:vbin/GstGLImageSink:glimagesink0
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...


Maybe the VA-API 0.36 is a must ?

Regards,
Jorge

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