Zidoo X9S - 4K android output

Discussion in 'General Development' started by dbe_dev, Dec 7, 2016.

  1. dbe_dev

    dbe_dev New Member

    We are investigating a signage alike solution were the X9S is one of our candidates.

    We know it is possible to playback 4K videos using the various players on the device. For signage use cases one however also wants to have android output in 4K not just the videos

    We always understood that it should be possible to create a SurfaceView at native 4k resolution with android 6.0 and output this as native 4k.

    So far we managed to get the box (firmware 1.2.7) to output 4k on the hdmi by selecting the resolution in the settings menu and we also managed to get the app to render its content in 4k by resetting the android window manager size (adb shell wm size 3840x2160 )

    The remaining issue we are facing is that somewhere the box decides to put a virtual 1080p60 screen in between which means the 4k pixels rendered by the our application first seem to get down scaled and then get upscaled before being transmitted on the HDMI output.

    Is there anyway to disable this intermediate 1080p virtual screen or to reconfigure it to be 4k?
     

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