/// <summary>
/// Se produit lors de la demande d'affichage de la page exemple.
/// </summary>
/// <param name="sender">L'objet à l'origine de l'évènement.</param>
/// <param name="e">Les paramètres de l'évènement.</param>
private void OnNavigateToExample(object sender, EventArgs e)
{
if (sender == null)
{
throw new ArgumentNullException(nameof(sender));
}
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
PageOneViewModel viewModel = PageViewModels.FirstOrDefault(vm => vm.GetType() == typeof(PageOneViewModel)) as PageOneViewModel;
if (viewModel == null)
{
viewModel = new PageOneViewModel();
}
if (e is EventArgs <RectViewModel> args)
{
Task.Run(() => viewModel.Load(args.Value));
}
ChangeViewModel((IPageViewModel)viewModel);
}
public PageOne()
{
this.InitializeComponent();
Debug.WriteLine(string.Format("Creating: {0}", GetType().Name));
ViewModel = new PageOneViewModel(NestedNavigationServiceProvider.GetNavigationService());
}
public ShellViewModel(PageOneViewModel pageOne,
PageTwoViewModel pageTwo,
FretBoardViewModel fretBoard,
BubblingViewModel bubbling,
FretBoardTwoViewModel fretBoardTwo)
{
Items.Add(pageOne);
Items.Add(pageTwo);
Items.Add(fretBoard);
Items.Add(bubbling);
Items.Add(fretBoardTwo);
DisplayName = "Mahapps Demo";
}
public static void StartScanFile(string filePath, string tableName, PageOneViewModel pageOneViewModel)
{
using var connection = new SqliteConnection(DatabaseService.ConnectionString);
connection.Open();
var deviceReader = new FileStream(filePath, FileMode.Open);
var isContinue = true;
var totalIterations = 1;
FindNextSignature(ref deviceReader);
var startOfFile = deviceReader.Position - 8;
long startOfNext;
while (isContinue)
{
if (deviceReader.Position < deviceReader.Length)
{
pageOneViewModel.ExtractProgress = deviceReader.Position * 100 / deviceReader.Length;
var timestamp = new []
{
(byte)deviceReader.ReadByte(),
(byte)deviceReader.ReadByte(),
(byte)deviceReader.ReadByte(),
(byte)deviceReader.ReadByte()
};
var signatureDateTime = GetTimeFromSignatureTimestamp(timestamp).ToString("yyyy-MM-dd hh:mm:ss");
FindNextSignature(ref deviceReader);
startOfNext = deviceReader.Position - 8;
new SqliteCommand(
$"insert into {tableName} (name, offset, size, start_datetime) values ('signature{totalIterations.ToString().PadLeft(8, '0')}.h264', {startOfFile}, {startOfNext-startOfFile}, '{signatureDateTime}')",
connection).ExecuteNonQuery();
startOfFile = startOfNext;
Console.WriteLine($"totalIterations: {totalIterations}");
totalIterations++;
}
else
{
isContinue = false;
}
}
connection.Close();
}
private void InitializationProcess(object param)
{
InitializeComponent();
PageOneViewModel = new PageOneViewModel(param);
this.DataContext = PageOneViewModel;
}
public void ShowPopup()
{
var model = new PageOneViewModel();
ActivateItem(model);
}
public static void ExtractVideos(string tableName, string fileNameOrDeviceId, string pathToVideos, PageOneViewModel pageOneViewModel)
{
using var connection = new SqliteConnection(DatabaseService.ConnectionString);
var sql = $"select * from {tableName}";
var sqlCount = $"select count(*) from {tableName}";
connection.Open();
var totalCount = (long)new SqliteCommand(sqlCount, connection).ExecuteScalar();
var reader = new SqliteCommand(sql, connection).ExecuteReader();
var i = 1;
while (reader.Read())
{
var item = new VideoItem()
{
Name = reader.GetString(1),
Offset = reader.GetInt32(2),
Size = reader.GetInt32(3),
StartDateTime = reader.GetString(4)
};
using var deviceReader = new FileStream(fileNameOrDeviceId, FileMode.Open, FileAccess.Read, FileShare.None, item.Size)
{
Position = item.Offset
};
using var fileReader = File.Create(Path.Combine(pathToVideos, item.Name));
var buffer = new byte[item.Size];
deviceReader.ReadAsync(buffer, 0, item.Size);
fileReader.Write(buffer);
pageOneViewModel.ExtractProgress = i * 100 / totalCount;
i++;
}
connection.Close();
}
