Standard screen recording and screen translation

[Perek101]

Hello, Pedro!

I have a problem: when I turn on screen translation and then the standard android screen recording an error occurs and the picture on the screen translation freezes. How can this be fixed?

[pedroSG94]

Hello,

Can you share an example code?
If possible a project to download and compile to reproduce the case

[Perek101]

I'm using your project and I notice this error:

Sending non-protected broadcast com.samsung.intent.action.MEDIA_PROJECTION_PERMISSION from system 2025:com.android.systemui/u0a44 pkg com.android.systemui
java.lang.Throwable
	at com.android.server.am.ActivityManagerService.checkBroadcastFromSystem(ActivityManagerService.java:17081)
	at com.android.server.am.ActivityManagerService.broadcastIntentLockedTraced(ActivityManagerService.java:18026)
	at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:17169)
	at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:17146)
	at com.android.server.am.ActivityManagerService.broadcastIntentWithFeature(ActivityManagerService.java:18253)
	at android.app.IActivityManager$Stub.onTransact$broadcastIntentWithFeature$(IActivityManager.java:11690)
	at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:2978)
	at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3199)
	at android.os.Binder.execTransactInternal(Binder.java:1375)
	at android.os.Binder.execTransact(Binder.java:1311)

I assume that the problem is that the same permission (MEDIA_PROJECTION_PERMISSION) is used for screen recording via standard Android tools as your screen broadcast. One interferes with the other. If you first turn on recording and then translation, in this case the recording will be interrupted after receiving the MEDIA_PROJECTION_PERMISSION permission in your project

[pedroSG94]

Can you tell me how to enable screen translation?

[Perek101]

It is enabled differently on different devices, usually the button is located in the notification shade

[pedroSG94]

Aaah, screen recorder. You wrote screen translation.

I think I can't do anything about it. I will try check if detect this is possible but I can't do more

[pedroSG94]

Hello,

I checked this case and you can know when the mediaprojection stop send video data after screen record of the Android system is started.

ScreenSource(applicationContext, mediaProjection, mediaProjectionCallback = object : MediaProjection.Callback() {
      override fun onStop() {
        super.onStop()
        //called when media project stop cause of screen record started
      }
    })

You can use this callback to know it. The problem is that you can't resume the stream because you can't know the moment mediaprojection is free again. So the recommended way is stop stream in that callback and let user start stream again manually.