using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BuzzGUI.Common.DSP
{
	public static class DSP
	{
		public static float AbsMax(float[] samples)
		{
			float ms = 0.0f;

			for (int i = 0; i < samples.Length; i++)
			{
				float x = Math.Abs(samples[i]);
				if (x > ms) ms = x;
			}

			return ms;
		}

		public static int FirstNonZeroOffset(float[] samples)
		{
			for (int i = 0; i < samples.Length; i++)
				if (samples[i] != 0.0f) return i;

			return -1;
		}

		public static void Scale(float[] samples, float s)
		{
			for (int i = 0; i < samples.Length; i++) samples[i] *= s;
		}

		public static float[] ScaledCopy(float[] samples, float s)
		{
			float[] r = new float[samples.Length];
			for (int i = 0; i < samples.Length; i++) r[i] = samples[i] * s;
			return r;
		}

	}
}