async static Task LoadGroupPersons(FrameAnalyzer fa)
{
var packageFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;
var sampleFile = await packageFolder.GetFileAsync("group.json");
var json = await Windows.Storage.FileIO.ReadTextAsync(sampleFile);
JObject jsonObj = JObject.Parse(json);
fa.groupId = (string)jsonObj["group_id"];
JArray personsObj = (JArray)jsonObj["persons"];
foreach (var personObj in personsObj)
{
var person = new Person();
person.name = (string)personObj["name"];
person.personId = (string)personObj["person_id"];
JArray faceIdsObj = (JArray)personObj["face_ids"];
string[] faceIds = faceIdsObj.Select(c => (string)c).ToArray();
person.faceIds.AddRange(faceIds);
fa.groupPersons.Add(person);
}
}
public static async Task <FrameAnalyzer> CreateAsync()
{
var fa = new FrameAnalyzer();
await LoadKey(fa);
await LoadGroupPersons(fa);
fa.faceClient = new WesteuropeFaceServiceClient(fa.cognitiveServiceKey);
// validate fa
if (string.IsNullOrEmpty(fa.cognitiveServiceKey))
{
throw new Exception("cognitive service key unavailable or invalid");
}
if (string.IsNullOrEmpty(fa.groupId))
{
throw new Exception("face group id unavailable or invalid");
}
if (fa.groupPersons == null || fa.groupPersons.Count == 0)
{
throw new Exception("no persons loaded");
}
return(fa);
}
async static Task LoadKey(FrameAnalyzer fa)
{
var packageFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;
var sampleFile = await packageFolder.GetFileAsync("cognitive_service.key");
var key = await Windows.Storage.FileIO.ReadTextAsync(sampleFile);
fa.cognitiveServiceKey = key;
}
