Re: cedarX on allwinnerA20, vdr-sxfe uses more CPU than mplayer

Andreas Baierl <list@xxxxxxxxxxxxx> · Wed, 13 Aug 2014 09:53:41 +0200



    Hi Cedric,

      
      I don't know, how xine-lib is working together with our
      libvdpau-sunxi. For me it seems, that xine uses software decoding
      for SD MPEG2 in your case. And I don't think anyone is working on
      an sunxi-integration atm to bring that forward.

      
      So I recommend you to try softhddevice as the output device. It's
      basically working together with libvdpau-sunxi. But don't expect
      it to fully work. Many VDPAU functions are not implemented yet.

      Basic intention of libvdpau-sunxi was to write some code upon a
      simple framework to test the reengineered CedarX-VPU of the
      Allwinner SoCs. Some people tried to improve the code to make a
      few programs - including vdr - work together with sunxi's vdpau
      integration.

      A handful of people are trying that at the moment. Feel free to
      join the group :p

      
      You can get the source from
      https://github.com/linux-sunxi/libvdpau-sunxi and infos in the
      wiki at http://www.linux-sunxi.org

      
      More developers are needed, that help to improve that code. Once
      this will happen and every DVB-S2 codec is supported, Allwinner
      devices can become a full featured native vdr client using
      hardware decoding. It's documented, that the SoCs are supporting
      are hardware deinterlacing, too. But there is missing the piece of
      software to use that atm. Some code snippets are available though.

      
      Hoping to have cleared up sunxi-vdpau a bit and found a new guy
      interested in sunxi-vdr :p  Linux-sunxi community is a actively
      developing one and not that small compared to other SoCs.

      
      Regards

      Andreas

      
      Am 12.08.2014 14:15, schrieb cedric.dewijs@xxxxxxxxxx:

    
    Hi All,

      
      I have an olimex AllwinnerA20 board. I have used the following
      guide to enable cedarx:

      https://www.olimex.com/forum/index.php?topic=3560.0

      This works fine, I can now watch big bugs bunny and the sintel
      trailer in 1080p. 

      
      Next, I have played the same mpeg2 SD recording by both mplayer
      and vdr-sxfe. vdr-sxfe uses a lot more CPU than mplayer. (about
      70% vs 14% @600MHz)

      When I look at the messages by vdr-sxfe, it see vdr-sxfe does use
      vdpau:

      
      $ vdr-sxfe -f

      vdr-sxfe 1.0.90-cvs  (build with xine-lib 1.2.1, using xine-lib
      1.2.2)

      
      Fullscreen mode

      
      VDR server not given, searching ...

      [18147] [discovery] Replacing broadcast source address
      192.168.31.106 with server-given address 127.0.0.1

      Found VDR server: host 127.0.0.1, port 37890

      [18147] [scrnsaver] Failed to open connection to bus: Unable to
      autolaunch a dbus-daemon without a $DISPLAY for X11

      [VDPAU SUNXI] VE version 0x1623 opened.

      vo_vdpau: vdpau API version : 1

      vo_vdpau: vdpau implementation description : sunxi VDPAU Driver

      vo_vdpau: VideoSurface doesn't support chroma type 4:2:2, sorry.

      xv_set_property: property=6, value=528408

      [18147] [vdr-fe]    Detected 2 CPUs

      [18147] [vdr-fe]    Enabling FFmpeg multithreaded video decoding

      input_bluray: (bluray_class_get_instance:1455)
      bluray_class_get_instance

      input_bluray: (bluray_class_get_instance:1455)
      bluray_class_get_instance

      [18147] [input_vdr] Connecting (control) to tcp://127.0.0.1:37890
      ...

      [18147] [input_vdr] Server greeting: VDR-1.7.28
      xineliboutput-1.0.90-cvs READY

      [18147] [input_vdr] Connected (control) to tcp://127.0.0.1:37890

      [18147] [input_vdr] Connecting (data) to
      pipe:///var/lib/vdr/plugins/xineliboutput/pipes.2875/pipe.0

      [18147] [input_vdr] Data stream connected (PIPE)

      [18147] [input_vdr] WARNING: xine-engine setting
      "engine.buffers.audio_num_buffers":230 is too low for HD-playback!
      Please use values between 500-1000!

      
      How can I lower the PCU usage of vdr-sxfe?

      I have seen a german guide to use cedarx and softhddevice, is this
      a better solution?

http://www.vdr-wiki.de/wiki/index.php/Cubieboard_2_-_Installationsanleitung_VDPAU/softhd-device

      
      Kind regards,

      Cedric

      
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