Hardware decoder availability on exynos CPU

[Personnel]

Le jeudi 20 juillet 2017 à 14:07 -0700, jeremi.wojcicki a écrit :
> Hi all,
> 
> I am working on an application where I capture an RTP h264 encoded
> video
> stream with udpsrc and then grab frames with appsink for further
> processing.
> The device I am developing for is Samsung Galaxy S8 with Exynos 8895.
> I use
> prebuild gstreamer libraries form 1.12.0 built. My pipeline looks
> like this:
> 
> udpsrc port=7481 ! application/x-rtp, media=video, payload=127,
> clock-rate=90000, encoding-name=H264 ! rtpjitterbuffer latency=50 !
> rtph264depay ! h264parse ! decodebin ! videoconvert n-threads=8 !
> video/x-raw,format=RGB ! appsink sync=true max-buffers=5 drop=true
> 
> The problem is that, as far as I know, decodebin should choose an
> apropriate
> decoder with highest priority, typically a hardware one. It seems
> however
> that openh264 (software, with poor performance) is autoplugged
> instead.
> Looking into gstreamer register, there is nothing like amc*
> available.
> 
> I use $(GSTREAMER_PLUGINS_CODECS) in the Android.mk which includes
> androidmedia (I guess from where the hw codec should come from) but
> no
> effect. Instead during startup I receive following error then
> 
> (non-blocking):

Make sure to include amc plugin (Android Media Codec).

> 
> 07-20 23:13:26.421 8341-
> 8341/org.freedesktop.gstreamer.tutorials.tutorial_1
> E/GStreamer+default: 0:00:00.011406731 0x771cdc6520
> gstjniutils.c:671:initialize_classes Could not find application class
> loader
> provider
> 07-20 23:13:26.422 8341-
> 8341/org.freedesktop.gstreamer.tutorials.tutorial_1
> W/GStreamer+GST_PLUGIN_LOADING: 0:00:00.011534538 0x771cdc6520
> gstplugin.c:527:gst_plugin_register_func plugin "(NULL)" failed to
> initialise
> 07-20 23:13:26.422 8341-
> 8341/org.freedesktop.gstreamer.tutorials.tutorial_1
> I/GStreamer: GStreamer initialization complete
> 
> I used a simplest "Android Tutorial-1" here, to be sure its the
> simplest
> possible case, but no amc* blocks can be found. Am I missing
> something here?
> I believed that amc* are somewhat given for granted on android. Do I
> need to
> compile manually some plugins or is it a matter of my device?
> 
> Thanks,
> Jeremi
> 
> 
> 
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