internal static bool ProcessFrame(IVideoEffectHandlerArgs args)
{
bool returnVal = false;
if (!string.IsNullOrWhiteSpace(args.ID) && handlers.TryGetValue(args.ID, out var list))
{
lock (listLock)
{
bool firstComplete = false;
foreach (var weakRef in list)
{
if (weakRef.TryGetTarget(out var handler))
{
if (firstComplete)
{
// Draw the output frame back onto the input frame after the first effect
// This way, the output from previous effects is used as input for upcoming effects
if (args.InputFrame is CanvasRenderTarget input)
{
using (var ds = input.CreateDrawingSession())
{
ds.DrawImage(args.OutputFrame, input.Bounds, args.OutputFrame.Bounds);
}
}
}
handler.ProcessFrame(args);
firstComplete = true;
returnVal = true;
}
}
}
}
return(returnVal);
}
void IVideoEffectHandler.ProcessFrame(IVideoEffectHandlerArgs args)
{
using (var ds = args.OutputFrame.CreateDrawingSession())
{
ds.DrawImage(args.InputFrame, args.OutputFrame.Bounds, args.InputFrame.Bounds, 1,
(args.OutputFrame.SizeInPixels.Width > args.InputFrame.SizeInPixels.Width || args.OutputFrame.SizeInPixels.Height > args.InputFrame.SizeInPixels.Height) ? UpscaleInterpolationMode : DownscaleInterpolationMode);
}
}
void IVideoEffectHandler.ProcessFrame(IVideoEffectHandlerArgs args)
{
SetEffectProperties(args, effect);
using (var session = args.OutputFrame.CreateDrawingSession())
{
session.DrawImage(effect, args.OutputFrame.Bounds, args.InputFrame.Bounds);
}
}
void IVideoEffectHandler.ProcessFrame(IVideoEffectHandlerArgs args)
{
using (var ds = args.OutputFrame.CreateDrawingSession())
{
sat.Saturation = Saturation;
sat.Source = args.InputFrame;
ds.DrawImage(sat, args.OutputFrame.Bounds, args.InputFrame.Bounds);
}
}
void IVideoEffectHandler.ProcessFrame(IVideoEffectHandlerArgs args)
{
using (var drawingSession = args.OutputFrame.CreateDrawingSession())
{
using (var blur = new GaussianBlurEffect()
{
Source = args.InputFrame, BlurAmount = BlurAmount, Optimization = Optimization
})
{
drawingSession.DrawImage(blur, args.OutputFrame.Bounds, args.InputFrame.Bounds);
}
}
}
protected override void SetEffectProperties(IVideoEffectHandlerArgs args, GaussianBlurEffect effect)
{
effect.Source = args.InputFrame;
effect.BlurAmount = BlurAmount;
effect.Optimization = Optimization;
}
protected override void SetEffectProperties(IVideoEffectHandlerArgs args, SaturationEffect effect)
{
effect.Source = args.InputFrame;
effect.Saturation = Saturation;
}
/// <summary> /// Set effect properties and source in this method /// </summary> /// <param name="args">The arguments for the current video frame</param> /// <param name="effect">The effect generated by SimpleEffectHandlerBase</param> protected abstract void SetEffectProperties(IVideoEffectHandlerArgs args, T effect);