// Gets the configurations of all cameras in the device
private async Task <List <CameraConfig> > GetCameraConfigurations()
{
// Try load the camera configurations from preferences
List <CameraConfig> cameraConfigList =
(PreferencesManager.Instance.Contains(KEY_CAMERA_CONFIG)) ?
PreferencesManager.Instance.Get <List <CameraConfig> >(KEY_CAMERA_CONFIG) :
new List <CameraConfig>();
if (cameraConfigList.Count != 2)
{
// Front camera config. Read configuration if not available.
CameraConfig frontCameraConfig =
cameraConfigList.Where(config => config.Type.Equals(CameraType.FrontFacing)).
FirstOrDefault();
if (frontCameraConfig == null)
{
frontCameraConfig = await GetCameraConfiguration(
CameraType.FrontFacing, CameraSensorLocation.Front);
if (frontCameraConfig != null)
{
cameraConfigList.Add(frontCameraConfig);
}
}
// Back camera config. Read configuration if not available.
CameraConfig backCameraConfig =
cameraConfigList.Where(config => config.Type.Equals(CameraType.Primary)).
FirstOrDefault();
if (backCameraConfig == null)
{
backCameraConfig = await GetCameraConfiguration(
CameraType.Primary, CameraSensorLocation.Back);
if (backCameraConfig != null)
{
cameraConfigList.Add(backCameraConfig);
}
}
// Update preferences
if (cameraConfigList.Count > 0)
{
PreferencesManager.Instance.Put <List <CameraConfig> >(
KEY_CAMERA_CONFIG, cameraConfigList);
}
}
return(cameraConfigList);
}