Hardware/GPU decoding of HEVC file using GStreamer

vishalchangrani vishal_changrani at yahoo.com
Mon Nov 13 20:55:27 UTC 2017


I have been struggling to get an HEVC file to playout on an Nexus 9 tablet
using the hardware decoder.
I have followed the GStreamer examples for Android and was able to run the
examples as-is. Later I modified the tutorial 3 to use the following

gst_parse_launch("filesrc location=/storage/emulated/0/myhevcfile.ts !
tsdemux ! queue ! h265parse ! avdec_h265 ! autovideosink sync=false",

This too works fine but the playout is really slow since I suppose its using
the software decoder. Hence I would like to change it to use the Hardware
decoder. The MX player seems to be using the hardware decoder using the OMX
plugin. I have been trying to do the same. 

I see that 'androidmedia' is listed as part of the GSTREAMER_PLUGIN_CODECS
which I have specified in the Android.mk file however it doesn't seem to be
loaded when the application starts. I believe the OMX hardware decoder will
be accessible through it, correct?
Please can you give me some pointers on how to get the HEVC video to playout
using the hardware decoder?

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