Live video out from your DJI FPV Goggles via USB.

I created a new activity that is able to display a bunch of fragments to introduce the whole process to the user. The content like images and texts might/should be change before merge. Suggestions for these are welcome.

This PR corresponds to issue #25 Closes #25

As a Continuation of #21 - here's the assets and designs for splash screens & screens to show information while not streaming

Icons -> goggles_icons.zip

Layout suggestions

Looks like the device/player cant hold up with the 60fps stream which results in high latency. Multiple people have this issue.

Example: https://www.youtube.com/watch?v=QA46zUFwxSQ

Its running on an Nokia 5.1 Plus on Android 10.

Hi, DigiView is not working to me unfortunately. It's not reacting on plug / unplug goggles, just showing black screen. Following all recommendations like temp off, 50 Mbps, OTG adapter (both testing devices see flash drive). One is Samsung Galaxy tab S2 Android 7, another one is MI 9T Pro Android 10. Dji Goggles V2 FPV version, firmware 01.00.0600. Please suggest what else I can try to make it working? Are there any known issues with 01.00.0600 version ?

Create a Settings Panel to manage:

• DVR Settings ( File Location, Auto Record , ...)
• Telemetrie Settings (For late e. g. Crossfire telemetry)
• About
• Version
• License

I have found that sending the Magic Packet to the Goggles while they already stream it stops the Stream. So i put the Magic packet after the first try of a playback from an opened stream.

Add a watermark to the bottom right corner of the screen as discussed in dev-chat. Ideally this would act as a button for the menu of the app, and should be removable by the user if desired.

Assets attached -> digiview-feed-overlays.zip I've added images with and without the text as this may want to be localized in the future.

examples:

• resolves #23 by adding a splash screen and replacing toast messages with overlays
• updated launcher icons to design from layout suggestion https://github.com/fpvout/DigiView-Android/issues/23#issue-892323468
• changed theme colors to match icons

https://user-images.githubusercontent.com/956646/118441419-79153400-b6e9-11eb-8d65-36f74b8fe687.mov

Resolves #5. Video will start in fullscreen by default as before. Double tap anywhere to switch to its native aspect ratio (unless your device screen and video feed happen to be the same ratio, then there will be no visual effect) with black bars on the edge, double-tap again to return to fullscreen with cropping. I've also enabled auto-animations in the layout, but they look a bit wonky on my Pixel sometimes, I guess resizing SurfaceView while it's playing causes this - any ideas how to avoid it?

Edit: now you can pinch to zoom in/out as well thanks to @omouren ❤️

Switching camera ratio while plugged in will freeze the video and require to plug the USB cable out and back in, tracked under #33.

I'm thinking about enabling full sensor rotation (#20) but disabling fullscreen mode while in portrait since it would look ridiculous, how do you guys feel about that?

Amazing work btw, latency is so low and app functions really well!

I usually fly with 4:3 mode set in the goggles (to get the widest FOV) but on digiview it seems to stretch the incoming 4:3 stream into 16:9, filling my phone screen but distorting the image.

Thanks,

FailsafeFPV

When the device screen turns off the following error is thrown

2021-05-13 21:02:58.872 21619-13521/com.example.ijdfpvviewer E/ExoPlayerImplInternal: Playback error
      com.google.android.exoplayer2.ExoPlaybackException: Source error
        at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:580)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:233)
        at android.os.HandlerThread.run(HandlerThread.java:67)
     Caused by: com.google.android.exoplayer2.ParserException: Loading finished before preparation is complete.
        at com.google.android.exoplayer2.source.ProgressiveMediaPeriod.maybeThrowPrepareError(ProgressiveMediaPeriod.java:243)
        at com.google.android.exoplayer2.source.MaskingMediaPeriod.maybeThrowPrepareError(MaskingMediaPeriod.java:154)
        at com.google.android.exoplayer2.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:965)
        at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:478)
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:233) 
        at android.os.HandlerThread.run(HandlerThread.java:67) 

Full Logcat Dump

I have been trying, unsuccessfully, to get the digiview app to work with my V2 goggles.

I have tried multiple USB C <> USB C cables 3 (all "data" cables). I have to go into my USB settings on the phone and switch from "charge only" to a full usb connection, but the app still just says "Waiting for video"

Anyone else have this problem? Any cable recommendations that are confirmed to be working?

Google Pixel 4 XL w/ v2 Goggles seem to work but is necessary to go to the USB setting and change it to controlled by device.

Also am only getting 2-3 frames per minute.

DJI Goggles V2 - Caddx Vista Nebula Pro Samsung and other smartphones

Once the glasses are connected to DigiView, the video can be seen perfectly, but the automatic registration is interrupted in the glasses and does not resume until the glasses are restarted.

This creates a lot of problems because I use automatic recording to insert it into videos.

Why does this happen? Does it happen to you too?

Addresses https://github.com/fpvout/DigiView-Android/issues/9 This adds a "VR" mode to support vr goggle phone holders, like Google Cardboard etc. For testing, I used this one: https://www.amazon.com/dp/B08SBM1HMW?psc=1&ref=ppx_yo2_dt_b_product_details It makes use of code from Google's "Grafika" project (see https://github.com/google/grafika) in order to do OpenGL ES operations and render the video twice with good performance. This code is in the "gles" folder.
A preferences setting was added for "Enable VR Goggle Mode" I'm not sure how you are translating strings for this project, so my strings are currently in English only. Let me know if there is something I should do to translate them, I could use google translate or something.

https://user-images.githubusercontent.com/19310623/122628141-456f5600-d069-11eb-89e6-45ec569a55f0.mov

I could use the option that would display the OSD - We have a verity of platforms used for Search and Rescue and a display that shows the GPS coordinates would take pressure off the pilot and help speed thing up for ground crews.

Thanks