DeviceInfo allows to set device specific configuration, which can be accessed in an uniform way using libdeviceinfo.
Configuration files per device are located at /etc/deviceinfo/devices/[device].yaml. It will try to autodetect the correct configuration to load based on model of the device, using android props for halium/android devices and dtb for native linux devices.
Note
This file needs to be all lowercase, as any autodetected device name will be converted to lowercase.
For example, the file for the Nexus 7 tablet (flo) would be located at /etc/deviceinfo/devices/flo.yaml and needs to start with the device's name:
$ cat /etc/deviceinfo/devices/flo.yaml
flo:
DeviceType: tablet
GridUnit: 18
WebkitDpr: 2
PrimaryOrientation: Landscape
...In case you can not add a new file to the rootfs, you can bind-mount /etc/deviceinfo/devices/halium.yaml. For a reference, see the configuration bringup for bonito/sargo.
If no device specific configuration exists or a key is not specified for the device config, DeviceInfo will fallback to /etc/deviceinfo/default.yaml. Keep your configuration simple and try to not duplicate any entries, which are already defined in default.yaml.
Any key can be added without needing to modify deviceinfo to use it. This allows for a lot of flexibility, however keys should be properly documented in order to not duplicate keys.
| Key | Description | Value(s) |
|---|---|---|
| Name | Device name / codename | Any string |
| PrettyName | Pretty name of the device | Any string |
| DeviceType | Sets device type | desktop, tablet, phone |
| GridUnit | Sets scale units | Any integer |
| SupportedOrientations | Orientations supported by the device | Portrait, InvertedPortrait, Landscape, InvertedLandscape |
| PrimaryOrientation | Primary orientation of the device | Portrait, InvertedPortrait, Landscape, InvertedLandscape |
| PortraitOrientation | Orientation of the device when in portrait mode | Portrait, InvertedPortrait, Landscape, InvertedLandscape |
| InvertedPortraitOrientation | Orientation of the device when in inverted portrait mode | Portrait, InvertedPortrait, Landscape, InvertedLandscape |
| LandscapeOrientation | Orientation of the device when in landscape mode | Portrait, InvertedPortrait, Landscape, InvertedLandscape |
| InvertedLandscapeOrientation | Orientation of the device when in inverted landscape mode | Portrait, InvertedPortrait, Landscape, InvertedLandscape |
Other keys are documented in the component specific subpages.
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