/// <summary>
/// 更新相机
/// </summary>
public void UpdateCameras()
{
Cameras.Clear();
if ((CameraFactory.Cameras?.Values != null) && (Scene?.VisionFrame?.IsEnableCamera == true))
{
CameraFactory.AddAllCamera();
Cameras = new ObservableCollection <ICamera>(CameraFactory.Cameras.Values);
}
}
private void RefreshCamera()
{
CloseSession();
Cameras.Clear();
foreach (var camera in CameraHandler.GetCameraList())
{
Cameras.Add(camera);
}
SelectedCamera = Cameras.FirstOrDefault();
}
public async Task <bool> Authenticate()
{
try
{
_httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes(GetCredentials())));
var response = await _httpClient.GetAsync(string.Format("/Initialize?Latitude=0&Longitude=0&DeviceId={0}", Guid.NewGuid()));
response.EnsureSuccessStatusCode(); // Throw if not a success code.
var stream = await response.Content.ReadAsStreamAsync();
var serializer = new XmlSerializer(typeof(WebResponse));
var webResponse = serializer.Deserialize(stream) as WebResponse;
if (webResponse != null)
{
if (webResponse.Header.Error == ErrorType.None)
{
_httpClient.DefaultRequestHeaders.Authorization = null; // Need to clear so following commands won't be treated as Initialize requests
SessionId = webResponse.Header.SessionId;
Cameras.Clear();
foreach (var camera in webResponse.Body.Cameras)
{
Utils.Trace(camera.Name + " " + camera.Id);
Cameras.Add(camera);
}
// We must periodically refresh the camera list, otherwise our session will timeout after 5*SRI if AutoLogoff set in AC
_camerasRefreshTimer.Interval = TimeSpan.FromSeconds(webResponse.Body.ClientConfiguration.StatusRefreshInterval).TotalMilliseconds;
_camerasRefreshTimer.Start();
return(true); // Authenticated successfully
}
Utils.Trace("UnitedVmsProvider Authenticate Error: " + webResponse.Header.Error);
var errorReason = webResponse.Header.Error == ErrorType.AuthorizationFailed
? "Credenciales inválidas o licencia vencida."
: default(string);
throw new DvtelVmsException($"Dvtel Vms Authenticate Error: {webResponse.Header.Error}. {errorReason}", webResponse.Header.Error);
}
}
catch (Exception ex)
{
if (ex is DvtelVmsException)
{
throw;
}
Utils.Trace("UnitedVmsProvider Authenticate Error: " + ex.Message, ex);
throw new DvtelVmsException("Dvtel Vms Authenticate Error: " + ErrorType.Unknown, ex);
}
throw new DvtelVmsException("Dvtel Vms Authenticate Error: Unserializable response.");
}
/// <summary>
/// Gets all data sources (cameras) from the VideoXpert system and stores them in the <see cref="Cameras"/> list.
/// </summary>
/// <returns>The GetCameras Task.</returns>
public static async Task GetCameras()
{
if (system == null)
{
return;
}
Cameras.Clear();
var cameras = await Task.Run(() => system.DataSources);
foreach (var camera in cameras)
{
Cameras.Add(camera);
}
}
public async Task GetCameras()
{
try
{
if (SessionId != Guid.Empty)
{
var response = await _httpClient.GetAsync("/GetCameras?SessionId=" + SessionId);
response.EnsureSuccessStatusCode(); // Throw if not a success code.
var stream = await response.Content.ReadAsStreamAsync();
var serializer = new XmlSerializer(typeof(WebResponse));
var webResponse = serializer.Deserialize(stream) as WebResponse;
if (webResponse != null)
{
if (webResponse.Header.Error == ErrorType.None)
{
Cameras.Clear();
foreach (var camera in webResponse.Body.Cameras)
{
Utils.Trace(camera.Name + " " + camera.Id);
Cameras.Add(camera);
}
// Report to registered listeners the updated list of cameras
if (_cameraListUpdated != null)
{
_cameraListUpdated.Invoke(this, Cameras);
}
}
else
{
Utils.Trace("UnitedVmsProvider GetCameras Error: " + webResponse.Header.Error);
}
}
}
}
catch (Exception ex)
{
Utils.Trace("UnitedVmsProvider GetCameras Error", ex);
}
}
public async Task Logout()
{
try
{
_camerasRefreshTimer.Stop();
if (SessionId != Guid.Empty)
{
var response = await _httpClient.GetAsync("/Stop?SessionId=" + SessionId);
response.EnsureSuccessStatusCode(); // Throw if not a success code.
var stream = await response.Content.ReadAsStreamAsync();
var serializer = new XmlSerializer(typeof(WebResponse));
var webResponse = serializer.Deserialize(stream) as WebResponse;
if (webResponse != null)
{
if (webResponse.Header.Error == ErrorType.None)
{
Cameras.Clear();
SessionId = Guid.Empty;
}
else
{
Utils.Trace("UnitedVmsProvider Logout Error: " + webResponse.Header.Error);
throw new DvtelVmsException("Dvtel Vms Logout Error: " + webResponse.Header.Error, webResponse.Header.Error);
}
}
}
}
catch (Exception ex)
{
if (ex is DvtelVmsException)
{
throw;
}
Utils.Trace("UnitedVmsProvider Logout Error", ex);
throw new DvtelVmsException("Dvtel Vms Logout Error", ex);
}
}
public Task DeleteDatabaseIfExists()
{
Cameras.Clear();
Cars.Clear();
return(EmptyTask);
}
public override void Reset()
{
Cameras.Clear();
CurrentCamera = 0;
}