private void TakeSnapshot()
{
DisplayThreadDispatcher.BeginInvoke(DispatcherPriority.Background, new Action(() =>
{
if (_snapshotContext != null)
{
_snapshotContext.Save(this, this.VideoSource);
_snapshotContext = null;
}
}));
}
private void TakeSnapshot()
{
DisplayThreadDispatcher.BeginInvoke(DispatcherPriority.Background, new Action(() =>
{
if (_snapshotContext == null)
{
return;
}
_snapshotContext.GetName(this);
switch (_snapshotContext.Format)
{
case SnapshotFormat.BMP:
var bmpE = new BmpBitmapEncoder();
bmpE.Frames.Add(BitmapFrame.Create(VideoSource));
using (
Stream stream =
File.Create(String.Format("{0}\\{1}.bmp", _snapshotContext.Path, _snapshotContext.Name))
)
{
bmpE.Save(stream);
}
break;
case SnapshotFormat.JPG:
var jpgE = new JpegBitmapEncoder();
jpgE.Frames.Add(BitmapFrame.Create(VideoSource));
using (
Stream stream =
File.Create(String.Format("{0}\\{1}.jpg", _snapshotContext.Path, _snapshotContext.Name))
)
{
jpgE.QualityLevel = _snapshotContext.Quality;
jpgE.Save(stream);
}
break;
case SnapshotFormat.PNG:
var pngE = new PngBitmapEncoder();
pngE.Frames.Add(BitmapFrame.Create(VideoSource));
using (
Stream stream =
File.Create(String.Format("{0}\\{1}.png", _snapshotContext.Path, _snapshotContext.Name))
)
{
pngE.Save(stream);
}
break;
}
_snapshotContext = null;
}));
}
private IntPtr VideoLockCallback(IntPtr opaque, ref IntPtr planes)
{
if (VlcMediaPlayer.Volume != Volume)
{
VlcMediaPlayer.Volume = Volume;
}
if (!_context.IsAspectRatioChecked)
{
var tracks = VlcMediaPlayer.Media.GetTracks();
var videoMediaTracks = tracks.OfType <VideoTrack>().ToList();
var videoTrack = videoMediaTracks.FirstOrDefault();
if (videoTrack != null)
{
_context.CheckDisplaySize(videoTrack);
var scale = GetScaleTransform();
if (Math.Abs(scale.Width - 1.0) + Math.Abs(scale.Height - 1.0) > 0.0000001)
{
_context.IsAspectRatioChecked = true;
Debug.WriteLine(String.Format("Scale:{0}x{1}", scale.Width, scale.Height));
Debug.WriteLine(String.Format("Resize Image to {0}x{1}", _context.DisplayWidth,
_context.DisplayHeight));
}
else
{
_checkCount++;
if (_checkCount > 5)
{
_context.IsAspectRatioChecked = true;
}
}
if (DisplayThreadDispatcher != null)
{
DisplayThreadDispatcher.BeginInvoke(
new Action(() => { ScaleTransform = new ScaleTransform(scale.Width, scale.Height); }));
}
}
}
return(planes = _context.MapView);
}
protected virtual void OnPropertyChanged <T>(Expression <Func <T> > expr)
{
if (_disposing)
{
return;
}
if (_isStopping)
{
return;
}
if (PropertyChanged != null)
{
var bodyExpr = expr.Body as MemberExpression;
var propInfo = bodyExpr.Member as PropertyInfo;
var propName = propInfo.Name;
if (DisplayThreadDispatcher != null)
{
DisplayThreadDispatcher.BeginInvoke(
new Action(() => { PropertyChanged(this, new PropertyChangedEventArgs(propName)); }));
}
}
}
private void CheckAspectRatio()
{
if (!_context.IsAspectRatioChecked)
{
var tracks = VlcMediaPlayer.Media.GetTrackInfo();
var videoMediaTracks = tracks.OfType <VideoTrack>().ToList();
var videoTrack = videoMediaTracks.FirstOrDefault();
if (videoTrack != null)
{
_context.CheckDisplaySize(videoTrack);
var scale = GetScaleTransform();
if (Math.Abs(scale.Width - 1.0) + Math.Abs(scale.Height - 1.0) > 0.0000001)
{
_context.IsAspectRatioChecked = true;
Debug.WriteLine($"Scale:{scale.Width}x{scale.Height}");
Debug.WriteLine($"Resize Image to {_context.DisplayWidth}x{_context.DisplayHeight}");
}
else
{
_checkCount++;
if (_checkCount > 5)
{
_context.IsAspectRatioChecked = true;
}
}
if (DisplayThreadDispatcher != null)
{
DisplayThreadDispatcher.BeginInvoke(
new Action(() => { ScaleTransform = new ScaleTransform(scale.Width, scale.Height); }));
}
}
}
}
