DynamicBuffer (VAudio)

DynamicBufferNode.cs

#region usings
using System;
using System.ComponentModel.Composition;

using VVVV.PluginInterfaces.V1;
using VVVV.PluginInterfaces.V2;
using VVVV.Utils.VColor;
using VVVV.Utils.VMath;

using VVVV.Core.Logging;

using VVVV.Audio;
using NAudio;
#endregion usings

namespace VVVV.Nodes
{
	#region PluginInfo
	[PluginInfo(Name = "DynamicBuffer", Category = "VAudio", Version = "Value", Help = "Basic template with one value in/out", Tags = "c#")]
	#endregion PluginInfo
	public class ValueVAudioDynamicBufferNode : GenericAudioSourceNode<DynamicBufferSignal>
	{
		#region fields & pins
		[Input("Input", DefaultValue = 0.0)]
		public IDiffSpread<ISpread<double>> FInput;

		[Import()]
		public ILogger FLogger;
		#endregion fields & pins

		
		protected override void SetParameters(int SliceIndex, DynamicBufferSignal instance)
		{
			float[] buffer = new float[FInput[SliceIndex].SliceCount];
			for(int i=0; i<FInput[SliceIndex].SliceCount; i++) {
				buffer[i] = (float) FInput[SliceIndex][i];
				instance.SetBuffer(buffer);
			}
		}
		
		protected override DynamicBufferSignal GetInstance(int i) {
			return new DynamicBufferSignal();
		}
		
		protected override int GetSpreadMax(int previousSpreadMax) {
			return FInput.SliceCount;
		}
	}
}

DynamicBufferSignal.cs

#region usings
using System;
using System.ComponentModel.Composition;

using VVVV.PluginInterfaces.V1;
using VVVV.PluginInterfaces.V2;
using VVVV.Utils.VColor;
using VVVV.Utils.VMath;

using VVVV.Core.Logging;

using VVVV.Audio;
#endregion usings

namespace VVVV.Nodes {
	public class DynamicBufferSignal : AudioSignal {
		int FOffset = 0;
		
		float[] FBuffer;
		Object FBufferLock = new Object();
		
		protected override void FillBuffer(float[] buffer, int offset, int count) {
			//if we're not ready then just provide zeros
			if (this.FBuffer == null) {
				for(int i=0; i<count; i++) {
					buffer[offset + i] = 0.0f;
				}	
			}
			
			lock(FBufferLock) {
				for(int i=0; i<count; i++) {
					buffer[offset + i] = FBuffer[FOffset];
					
					FOffset++;
					FOffset %= FBuffer.Length;
				}
			}
		}
		
		public void SetBuffer(float[] buffer) {
			lock(FBufferLock) {
				FBuffer = buffer;
			}
		}
	}
}