i.MX Processors中的主题 Re: imxcompositor_g2d and imxv4l2src problem

imxcompositor_g2d and imxv4l2src problem

reuelhaavrahami — Wed, 01 Feb 2017 14:02:23 GMT

when trying to combine a picture and video (using imxv4l2src ) using the imxcompositor_g2d we get very poor framerate. 5% resources are shown with "top".

using the same pipeline while using a filesrc (video) instead, the framerate is as expected with the same resources used.

The only reason I could see is that the camera source outputs the frame in interlace-mode=interleaved, which seemingly is not supported by the imxcompositor_g2d.

When connecting the same camera source to the sink element, the video looks perfect.

The input to the camera interface is UYVY 1280X720 16bit interface.

GStreamer Core Library version 1.4.5

Linux imx6qsabresd 3.14.52-g29edc48-dirty

Re: imxcompositor_g2d and imxv4l2src problem

igorpadykov — Thu, 02 Feb 2017 03:20:57 GMT

Hi Reuel

please try procedures given in sect.7.3.16 Video composition

sect.7.3.15 Video conversion attached Linux Guide.

Best regards
igor
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Re: imxcompositor_g2d and imxv4l2src problem

reuelhaavrahami — Thu, 02 Feb 2017 14:23:50 GMT

I looked at the document. using fake sources and file sources works fine and I can see the expected frame rate, but using the imxv4l2src does not work. The output on running the pipeline shows the following

WARNING: from element /GstPipeline:pipeline0/GstImxV4l2Sink:imxv4l2sink0: A lot of buffers are being dropped.
Additional debug info:
/home/haggay/workspace/FrameBuffer/fsl-release-bsp/build/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/gstreamer1.0/1.4.5-r0/gstreamer-1.4.5/libs/gst/base/gstbasesink.c(2794): gst_base_sink_is_too_late (): /GstPipeline:pipeline0/GstImxV4l2Sink:imxv4l2sink0:
There may be a timestamping problem, or this computer is too slow.