public static async Task <bool> Add(IEffect effect, bool unique)
{
if (unique && _effects.Any(e => e.Key == effect.Key))
{
return(false);
}
_effects.Add(effect);
await effect.Init();
return(true);
}
public static async Task <bool> Add(IEffect effect)
{
if (Exists(effect.Key))
{
return(false);
}
_effects.Add(effect);
await effect.Init();
return(true);
}
public async Task AddEffect(IEffect effect, params IFilter[] filters)
{
await effect.Init(_outputSize);
var transformOptions = new ExecutionDataflowBlockOptions {
BoundedCapacity = 20, MaxDegreeOfParallelism = 8
};
var filterBlocks = filters.Select(x => new TransformBlock <OutputFrame, OutputFrame>(x.ApplyFilter, transformOptions)).ToList();
ITargetBlock <OutputFrame> firstBlock;
if (filterBlocks.Any())
{
var linkOptions = new DataflowLinkOptions {
PropagateCompletion = true
};
for (int i = 0; i < filterBlocks.Count; i++)
{
var thisBlock = (ISourceBlock <OutputFrame>)filterBlocks[i];
var nextBlock = (i + 1) >= filterBlocks.Count ? (ITargetBlock <OutputFrame>)_renderTransformBlock : filterBlocks[i + 1];
thisBlock.LinkTo(nextBlock, linkOptions);
}
firstBlock = filterBlocks[0];
}
else
{
firstBlock = _renderTransformBlock;
}
_ = Task.Run(async() =>
{
while (!_cts.IsCancellationRequested)
{
var frame = await effect.GetPixels();
await firstBlock.SendAsync(frame);
}
firstBlock.Complete();
});
}