gstreamer: v4l2videodec plugin

Stanimir Varbanov
2016-04-11T12:03:23Z

Hi,

I'm working on QCOM v4l2 video decoder/encoder driver and in order to
test its functionalities I'm using gstreamer v4l2videodec plugin. I am
able to use the v4l2videodec plugin with MMAP, now I want to try the
dmabuf export from v4l2 and import dmabuf buffers to glimagesink. I
upgraded gst to 1.7.91 so that I have the dmabuf support in glimagesink.
Mesa version is 11.1.2.

I'm using the following pipeline:

GST_GL_PLATFORM=egl GST_GL_API=gles2 gst-launch-1.0 $GSTDEBUG
$GSTFILESRC ! qtdemux name=m m.video_0 ! h264parse ! v4l2video32dec
capture-io-mode=dmabuf ! glimagesink

I stalled on this error:

eglimagememory
gsteglimagememory.c:473:gst_egl_image_memory_from_dmabuf:<eglimageallocator0>
eglCreateImage failed: EGL_BAD_MATCH

which in Mesa is:

libEGL debug: EGL user error 0x3009 (EGL_BAD_MATCH) in
dri2_create_image_khr_texture

Do someone know how the dmabuf import is tested when the support has
been added to glimagesink? Or some pointers how to continue with debugging?

Thanks for the answers.

--
regards,
Stan