private uint VideoFormatCallback(ref IntPtr opaque, ref uint chroma, ref uint width, ref uint height,
ref uint pitches, ref uint lines)
{
Debug.WriteLine(String.Format("Initialize Video Content : {0}x{1}", width, height));
if (_context == null)
{
uint tmpWidth = width;
uint tmpHeight = height;
if (DisplayThreadDispatcher == null)
{
throw new InvalidOperationException("VlcPlayer not be ready, if you want to use VlcPlay no in XAML, please read this Wiki: \"https://github.com/higankanshi/Meta.Vlc/wiki/Use-VlcPlayer-with-other-controls\".");
}
DisplayThreadDispatcher.Invoke(DispatcherPriority.Normal,
new Action(() => { _context = new VideoDisplayContext(tmpWidth, tmpHeight, ChromaType.RV32); }));
}
chroma = (uint)_context.ChromaType;
width = (uint)_context.Width;
height = (uint)_context.Height;
pitches = (uint)_context.Stride;
lines = (uint)_context.Height;
VideoSource = _context.Image;
return((uint)_context.Size);
}
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);
}
private uint VideoFormatCallback(ref IntPtr opaque, ref uint chroma, ref uint width, ref uint height,
ref uint pitches, ref uint lines)
{
Debug.WriteLine(String.Format("Initialize Video Content : {0}x{1}", width, height));
var videoFormatChangingArgs = new VideoFormatChangingEventArgs(width, height, ChromaType.RV32);
if (VideoFormatChanging != null)
{
VideoFormatChanging(this, videoFormatChangingArgs);
}
if (_context == null || videoFormatChangingArgs.Width != _context.Width || videoFormatChangingArgs.Height != _context.Height)
{
if (DisplayThreadDispatcher == null)
{
throw new NullReferenceException(String.Format("Image = {0}, Image.SeparateThreadDispatcher = {1}, ThreadSeparatedImage.CommonDispatcher = {2}", Image, Image.SeparateThreadDispatcher, ThreadSeparatedImage.CommonDispatcher));
}
DisplayThreadDispatcher.Invoke(DispatcherPriority.Normal,
new Action(() =>
{
if (_context != null)
{
_context.Dispose();
}
_context = new VideoDisplayContext(videoFormatChangingArgs.Width, videoFormatChangingArgs.Height, videoFormatChangingArgs.ChromaType);
VideoSource = null;
}));
}
_context.IsAspectRatioChecked = false;
chroma = (uint)_context.ChromaType;
width = (uint)_context.Width;
height = (uint)_context.Height;
pitches = (uint)_context.Stride;
lines = (uint)_context.Height;
return((uint)_context.Size);
}
private uint VideoFormatCallback(void **opaque, byte *chroma, uint *width, uint *height, uint *pitches,
uint *lines)
{
Debug.WriteLine($"Initialize Video Content : {*width}x{*height}");
var videoFormatChangingArgs = new VideoFormatChangingEventArgs(*width, *height, ChromaType.RV32);
VideoFormatChanging?.Invoke(this, videoFormatChangingArgs);
if (_context == null || videoFormatChangingArgs.Width != _context.Width ||
videoFormatChangingArgs.Height != _context.Height)
{
if (DisplayThreadDispatcher == null)
{
throw new NullReferenceException(
$"Image = {Image}, Image.SeparateThreadDispatcher = {Image.SeparateThreadDispatcher}, ThreadSeparatedImage.CommonDispatcher = {ThreadSeparatedImage.CommonDispatcher}");
}
DisplayThreadDispatcher.Invoke(DispatcherPriority.Normal,
new Action(() =>
{
if (_context != null)
{
_context.Dispose();
}
_context = new VideoDisplayContext(videoFormatChangingArgs.Width,
videoFormatChangingArgs.Height, videoFormatChangingArgs.ChromaType);
VideoSource = null;
}));
}
_context.IsAspectRatioChecked = false;
*(uint *)chroma = (uint)_context.ChromaType;
*width = (uint)_context.Width;
*height = (uint)_context.Height;
*pitches = (uint)_context.Stride;
*lines = (uint)_context.Height;
return((uint)_context.Size);
}
private uint VideoFormatCallback(ref IntPtr opaque, ref uint chroma, ref uint width, ref uint height,
ref uint pitches, ref uint lines)
{
Debug.WriteLine(String.Format("Initialize Video Content : {0}x{1}", width, height));
if (_context == null)
{
uint tmpWidth = width;
uint tmpHeight = height;
if (DisplayThreadDispatcher != null)
{
DisplayThreadDispatcher.Invoke(DispatcherPriority.Normal,
new Action(() => { _context = new VideoDisplayContext(tmpWidth, tmpHeight, ChromaType.RV32); }));
}
}
chroma = (uint)_context.ChromaType;
width = (uint)_context.Width;
height = (uint)_context.Height;
pitches = (uint)_context.Stride;
lines = (uint)_context.Height;
VideoSource = _context.Image;
return((uint)_context.Size);
}
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); }));
}
}
}
}
