https://github.com/helloimkevo/androidpresentationdisplaydemo

Demo app for the Android Presentation Display component.
https://github.com/helloimkevo/androidpresentationdisplaydemo

android kotlin-android

Last synced: about 1 month ago
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Demo app for the Android Presentation Display component.

• Host: GitHub
• URL: https://github.com/helloimkevo/androidpresentationdisplaydemo
• Owner: HelloImKevo
• Created: 2023-09-15T19:40:16.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-10-13T22:11:37.000Z (over 1 year ago)
• Last Synced: 2024-11-08T00:15:10.521Z (3 months ago)
• Topics: android, kotlin-android
• Language: Kotlin
• Homepage:
• Size: 6.2 MB
• Stars: 2
• Watchers: 1
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# AndroidPresentationDisplayDemo

Demo app for the Android Presentation Display component.

## How to Grab a Screenshot from the Secondary Display

You can get the "Display ID" using:

```shell

adb shell dumpsys display

```

And then look for a display labeled like "HDMI Screen". The Display ID is the

numeric value of the `uniqueId` property in most cases:

```

DisplayDeviceInfo{"HDMI Screen": uniqueId="local:1", 1280 x 800, modeId 2, 

defaultModeId 2, supportedModes [{id=2, width=1280, height=800, fps=60.000004}], 

colorMode 0, supportedColorModes [0], HdrCapabilities android.view.Display$HdrCapabilities@40f16308, 

density 237, 237.0 x 237.0 dpi, appVsyncOff 1000000, presDeadline 16666666, 

touch EXTERNAL, rotation 0, type HDMI, address {port=1}, state ON, 

FLAG_SECURE, FLAG_SUPPORTS_PROTECTED_BUFFERS, FLAG_PRESENTATION}

```

Then you use the `-d` option in `adb shell screencap`:

```shell

adb shell screencap -d 1 /sdcard/screen-01.png && adb pull /sdcard/screen-01.png ~/Desktop/

```

The same concept should apply to `screenrecord`, but this is only available on

**Android 11+**. Android developer documentation:  

https://developer.android.com/tools/adb#screencap  

```shell

adb shell screenrecord --display-id 1 /sdcard/recording-01.mp4

adb pull /sdcard/recording-01.mp4 ~/Desktop/

```

Stack Overflow post:  

https://stackoverflow.com/questions/64180082/adb-screenrecord-secondary-display-from-listed-displays-in-dumpsys  

Link to `screenrecord` source code:  

https://android.googlesource.com/platform/frameworks/av/+/refs/heads/master/cmds/screenrecord/screenrecord.cpp  

## How to screencast with Genymobile screen copy

`scrcpy` also supports a `--display` flag:

```shell

scrcpy --display 1

```

You can also record the secondary HDMI screen using `scrcpy` like:

```shell

scrcpy --display 1 --record ~/Desktop/recording.mp4

```

More details:  

https://manpages.ubuntu.com/manpages/jammy/man1/scrcpy.1.html  

https://github.com/Genymobile/scrcpy