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#region License
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/* FNA - XNA4 Reimplementation for Desktop Platforms
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* Copyright 2009-2020 Ethan Lee and the MonoGame Team
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*
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* Released under the Microsoft Public License.
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* See LICENSE for details.
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*/
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#endregion
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#region Using Statements
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using System;
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using System.Runtime.InteropServices;
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#endregion
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namespace Microsoft.Xna.Framework.Audio
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{
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// http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.audio.audioemitter.aspx
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public class AudioEmitter
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{
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#region Public Properties
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public float DopplerScale
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{
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get
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{
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return emitterData.DopplerScaler;
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}
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set
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{
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if (value < 0.0f)
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{
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throw new ArgumentOutOfRangeException("AudioEmitter.DopplerScale must be greater than or equal to 0.0f");
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}
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emitterData.DopplerScaler = value;
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}
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}
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public Vector3 Forward
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{
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get
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{
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return new Vector3(
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emitterData.OrientFront.x,
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emitterData.OrientFront.y,
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-emitterData.OrientFront.z
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);
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}
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set
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{
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emitterData.OrientFront.x = value.X;
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emitterData.OrientFront.y = value.Y;
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emitterData.OrientFront.z = -value.Z;
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}
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}
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public Vector3 Position
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{
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get
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{
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return new Vector3(
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emitterData.Position.x,
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emitterData.Position.y,
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-emitterData.Position.z
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);
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}
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set
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{
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emitterData.Position.x = value.X;
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emitterData.Position.y = value.Y;
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emitterData.Position.z = -value.Z;
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}
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}
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public Vector3 Up
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{
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get
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{
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return new Vector3(
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emitterData.OrientTop.x,
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emitterData.OrientTop.y,
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-emitterData.OrientTop.z
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);
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}
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set
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{
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emitterData.OrientTop.x = value.X;
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emitterData.OrientTop.y = value.Y;
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emitterData.OrientTop.z = -value.Z;
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}
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}
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public Vector3 Velocity
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{
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get
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{
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return new Vector3(
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emitterData.Velocity.x,
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emitterData.Velocity.y,
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-emitterData.Velocity.z
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);
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}
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set
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{
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emitterData.Velocity.x = value.X;
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emitterData.Velocity.y = value.Y;
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emitterData.Velocity.z = -value.Z;
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}
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}
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#endregion
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#region Internal Variables
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internal FAudio.F3DAUDIO_EMITTER emitterData;
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#endregion
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#region Private Static Variables
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private static readonly float[] stereoAzimuth = new float[]
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{
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0.0f, 0.0f
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};
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private static readonly GCHandle stereoAzimuthHandle = GCHandle.Alloc(
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stereoAzimuth,
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GCHandleType.Pinned
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);
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#endregion
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#region Public Constructor
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public AudioEmitter()
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{
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emitterData = new FAudio.F3DAUDIO_EMITTER();
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DopplerScale = 1.0f;
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Forward = Vector3.Forward;
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Position = Vector3.Zero;
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Up = Vector3.Up;
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Velocity = Vector3.Zero;
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/* Unused variables, defaults based on XNA behavior */
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emitterData.pCone = IntPtr.Zero;
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emitterData.ChannelCount = 1;
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emitterData.ChannelRadius = 1.0f;
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emitterData.pChannelAzimuths = stereoAzimuthHandle.AddrOfPinnedObject();
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emitterData.pVolumeCurve = IntPtr.Zero;
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emitterData.pLFECurve = IntPtr.Zero;
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emitterData.pLPFDirectCurve = IntPtr.Zero;
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emitterData.pLPFReverbCurve = IntPtr.Zero;
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emitterData.pReverbCurve = IntPtr.Zero;
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emitterData.CurveDistanceScaler = 1.0f;
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}
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#endregion
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}
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}
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