static void DeviceProperty_Changed(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
// Get the sender
CapPlayer typedSender = sender as CapPlayer;
if ((typedSender != null) && (e.NewValue != null))
{
// Make sure that we are not in design mode
if (System.ComponentModel.DesignerProperties.GetIsInDesignMode(typedSender))
{
return;
}
// Unsubscribe from previous device
CapDevice oldDevice = e.OldValue as CapDevice;
if (oldDevice != null)
{
// Clean up
typedSender.CleanUpDevice(oldDevice);
}
// Subscribe to new one
CapDevice newDevice = e.NewValue as CapDevice;
if (newDevice != null)
{
// Subscribe
newDevice.NewBitmapReady += typedSender.device_OnNewBitmapReady;
}
}
}
/// <summary>
/// Cleans up a specific device
/// </summary>
/// <param name="device">Device to clean up</param>
void CleanUpDevice(CapDevice device)
{
// Check if there even is a device
if (device == null)
{
return;
}
// Stop
device.Stop();
// Unsubscribe
device.NewBitmapReady -= device_OnNewBitmapReady;
}
/// <summary>
/// Invoked when a new bitmap is ready
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">EventArgs</param>
void device_OnNewBitmapReady(object sender, EventArgs e)
{
// Create new binding for the framerate
Binding b = new Binding();
b.Source = Device;
b.Path = new PropertyPath(CapDevice.FramerateProperty);
SetBinding(CapPlayer.FramerateProperty, b);
// Get the sender
CapDevice typedSender = sender as CapDevice;
if (typedSender != null)
{
// Set the source of the image
Source = typedSender.BitmapSource;
}
}
/// <summary>
/// Invoked when the MonikerString dependency property has changed
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">EventArgs</param>
private static void MonikerString_Changed(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
// Get typed sender
CapDevice typedSender = sender as CapDevice;
if (typedSender != null)
{
// Always stop the device
typedSender.Stop();
// Get the new value
string newMonikerString = e.NewValue as string;
// Check if we have a valid moniker string
if (!string.IsNullOrEmpty(newMonikerString))
{
// Initialize device
typedSender.InitializeDeviceForMoniker(newMonikerString);
// Start
typedSender.Start();
}
}
}
