private static BitmapImage CreateImage(byte[] b, int dpw, int dph)
{
try
{
using (var ms = new MemoryStream(b, false))
using (var ws = new WrappingStream(ms))
{
var bi = new BitmapImage();
bi.BeginInit();
bi.CacheOption = BitmapCacheOption.OnLoad;
bi.StreamSource = ws;
if (dpw > 0 || dph > 0)
{
bi.DecodePixelWidth = dpw;
bi.DecodePixelHeight = dph;
}
bi.EndInit();
bi.Freeze();
return bi;
}
}
catch
{
return null;
}
}
private void SDK_LiveViewUpdated(Stream img)
{
try
{
if (CameraHandler.IsLiveViewOn)
{
using (WrappingStream s = new WrappingStream(img))
{
img.Position = 0;
BitmapImage EvfImage = new BitmapImage();
EvfImage.BeginInit();
EvfImage.StreamSource = s;
EvfImage.CacheOption = BitmapCacheOption.OnLoad;
EvfImage.EndInit();
EvfImage.Freeze();
Application.Current.Dispatcher.Invoke(SetImageAction, EvfImage);
}
}
}
catch (Exception ex) { ReportError(ex.Message, false); }
}
private static void UriSourcePropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
var img = sender as LazyImage;
if (img == null) return;
var dpw = img.DecodePixelWidth;
var dph = img.DecodePixelHeight;
var uri = e.NewValue as Uri;
if (e.NewValue == e.OldValue || uri == null) return;
try
{
if (uri.Scheme == "pack")
{
// PACK image
var bi = new BitmapImage(uri) { CacheOption = BitmapCacheOption.OnLoad };
bi.Freeze();
SetImage(img, bi, uri);
}
else
{
img.Source = null;
Subject<byte[]> publisher = null;
_imageStreamer.GetOrAdd(uri, _ => publisher = new Subject<byte[]>())
.Select(b =>
{
try
{
using (var ms = new MemoryStream(b, false))
using (var ws = new WrappingStream(ms))
{
var bi = new BitmapImage();
bi.BeginInit();
bi.CacheOption = BitmapCacheOption.OnLoad;
bi.StreamSource = ws;
if (dpw > 0 || dph > 0)
{
bi.DecodePixelWidth = dpw;
bi.DecodePixelHeight = dph;
}
bi.EndInit();
bi.Freeze();
return bi;
}
}
catch
{
return null;
}
})
.Subscribe(b => DispatcherHolder.Enqueue(
() => SetImage(img, b, uri), DispatcherPriority.Loaded)
, ex => { });
if (publisher != null)
{
_taskFactory.StartNew(() => LoadBytes(uri, publisher));
}
}
}
// ReSharper disable EmptyGeneralCatchClause
catch
// ReSharper restore EmptyGeneralCatchClause
{
}
}
private void SDK_LiveViewUpdated(Stream img)
{
if (CameraHandler.IsLiveViewOn)
{
using (WrappingStream s = new WrappingStream(img))
{
img.Position = 0;
EvfImage = new BitmapImage();
EvfImage.BeginInit();
EvfImage.StreamSource = s;
EvfImage.CacheOption = BitmapCacheOption.OnLoad;
EvfImage.EndInit();
EvfImage.Freeze();
Application.Current.Dispatcher.Invoke(SetImageAction);
}
}
}
