UnityEditor.IAudioEffectPlugin.GetSampleRate C# (CSharp) Method

        public abstract int GetSampleRate();
        public abstract bool IsPluginEditableAndEnabled();

		private static bool ParamEqualizerCurveEditor(IAudioEffectPlugin plugin, Rect r, ref float centerFreq, ref float bandwidth, ref float gain, float blend)
		{
			Event current = Event.current;
			int controlID = GUIUtility.GetControlID(FocusType.Passive);
			r = AudioCurveRendering.BeginCurveFrame(r);
			float min;
			float max;
			float num;
			plugin.GetFloatParameterInfo(ParamEqGUI.kCenterFreqName, out min, out max, out num);
			float min2;
			float max2;
			float num2;
			plugin.GetFloatParameterInfo(ParamEqGUI.kOctaveRangeName, out min2, out max2, out num2);
			float min3;
			float max3;
			float num3;
			plugin.GetFloatParameterInfo(ParamEqGUI.kFrequencyGainName, out min3, out max3, out num3);
			bool result = false;
			switch (current.GetTypeForControl(controlID))
			{
			case EventType.MouseDown:
				if (r.Contains(Event.current.mousePosition) && current.button == 0)
				{
					GUIUtility.hotControl = controlID;
					EditorGUIUtility.SetWantsMouseJumping(1);
					current.Use();
				}
				break;
			case EventType.MouseUp:
				if (GUIUtility.hotControl == controlID && current.button == 0)
				{
					GUIUtility.hotControl = 0;
					EditorGUIUtility.SetWantsMouseJumping(0);
					current.Use();
				}
				break;
			case EventType.MouseDrag:
				if (GUIUtility.hotControl == controlID)
				{
					float num4 = (!Event.current.alt) ? 1f : 0.25f;
					centerFreq = Mathf.Clamp((float)ParamEqGUI.MapNormalizedFrequency(ParamEqGUI.MapNormalizedFrequency((double)centerFreq, (double)plugin.GetSampleRate(), true, false) + (double)(current.delta.x / r.width), (double)plugin.GetSampleRate(), true, true), min, max);
					if (Event.current.shift)
					{
						bandwidth = Mathf.Clamp(bandwidth - current.delta.y * 0.02f * num4, min2, max2);
					}
					else
					{
						gain = Mathf.Clamp(gain - current.delta.y * 0.01f * num4, min3, max3);
					}
					result = true;
					current.Use();
				}
				break;
			}
			if (Event.current.type == EventType.Repaint)
			{
				float num5 = (float)ParamEqGUI.MapNormalizedFrequency((double)centerFreq, (double)plugin.GetSampleRate(), true, false);
				EditorGUI.DrawRect(new Rect(num5 * r.width + r.x, r.y, 1f, r.height), (GUIUtility.hotControl != controlID) ? new Color(0.4f, 0.4f, 0.4f) : new Color(0.6f, 0.6f, 0.6f));
				HandleUtility.ApplyWireMaterial();
				double num6 = 3.1415926;
				double wm = -2.0 * num6 / (double)plugin.GetSampleRate();
				double num7 = 2.0 * num6 * (double)centerFreq / (double)plugin.GetSampleRate();
				double num8 = 1.0 / (double)bandwidth;
				double num9 = (double)gain;
				double num10 = Math.Sin(num7) / (2.0 * num8);
				double b0 = 1.0 + num10 * num9;
				double b1 = -2.0 * Math.Cos(num7);
				double b2 = 1.0 - num10 * num9;
				double a0 = 1.0 + num10 / num9;
				double a1 = -2.0 * Math.Cos(num7);
				double a2 = 1.0 - num10 / num9;
				AudioCurveRendering.DrawCurve(r, delegate(float x)
				{
					double num11 = ParamEqGUI.MapNormalizedFrequency((double)x, (double)plugin.GetSampleRate(), true, true);
					ComplexD a = ComplexD.Exp(wm * num11);
					ComplexD a2 = a * (a * b2 + b1) + b0;
					ComplexD b = a * (a * a2 + a1) + a0;
					ComplexD complexD = a2 / b;
					double num12 = Math.Log10(complexD.Mag2());
					return (float)(0.5 * num12);
				}, ParamEqGUI.ScaleAlpha(AudioCurveRendering.kAudioOrange, blend));
			}
			ParamEqGUI.DrawFrequencyTickMarks(r, (float)plugin.GetSampleRate(), true, new Color(1f, 1f, 1f, 0.3f * blend));
			AudioCurveRendering.EndCurveFrame();
			return result;
		}