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Using OpenTK/OpenAL to Develop Cross Platform DIS VOIP Application

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15 Mar 2010BSD10 min read 44.8K   1.7K   24  
Application allows voice communications (VOIP) utilizing the Distributed Interactive Simulation protocol (IEEE 1278.1)
// Copyright (c) 1995-2009 held by the author(s).  All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
//  are met:
// 
//  * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the names of the Naval Postgraduate School (NPS)
//  Modeling Virtual Environments and Simulation (MOVES) Institute
// (http://www.nps.edu and http://www.MovesInstitute.org)
// nor the names of its contributors may be used to endorse or
//  promote products derived from this software without specific
// prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Xml.Serialization;
using DISnet.DataStreamUtilities;

namespace DIS1998net
{

    /**
     * Description of one electronic emission beam
     *
     * Copyright (c) 2008, MOVES Institute, Naval Postgraduate School. All rights reserved.
     * This work is licensed under the BSD open source license, available at https://www.movesinstitute.org/licenses/bsd.html
     *
     * @author DMcG
     * Modified for use with C#:
     * Peter Smith (Naval Air Warfare Center - Training Systems Division)
     */
    [Serializable]
    [XmlRoot]
    [XmlInclude(typeof(FundamentalParameterData))]
    [XmlInclude(typeof(TrackJamTarget))]
    public partial class ElectronicEmissionBeamData : Object
    {
        /** This field shall specify the length of this beams data in 32 bit words */
        protected byte  _beamDataLength;

        /** This field shall specify a unique emitter database number assigned to differentiate between otherwise similar or identical emitter beams within an emitter system. */
        protected byte  _beamIDNumber;

        /** This field shall specify a Beam Parameter Index number that shall be used by receiving entities in conjunction with the Emitter Name field to provide a pointer to the stored database parameters required to regenerate the beam.  */
        protected ushort  _beamParameterIndex;

        /** Fundamental parameter data such as frequency range, beam sweep, etc. */
        protected FundamentalParameterData  _fundamentalParameterData = new FundamentalParameterData(); 

        /** beam function of a particular beam */
        protected byte  _beamFunction;

        /** Number of track/jam targets */
        protected byte  _numberOfTrackJamTargets;

        /** wheher or not the receiving simulation apps can assume all the targets in the scan pattern are being tracked/jammed */
        protected byte  _highDensityTrackJam;

        /** padding */
        protected byte  _pad4 = 0;

        /** identify jamming techniques used */
        protected uint  _jammingModeSequence;

        /** variable length list of track/jam targets */
        protected List<TrackJamTarget> _trackJamTargets = new List<TrackJamTarget>(); 

        /** Constructor */
        ///<summary>
        ///Description of one electronic emission beam
        ///</summary>
        public ElectronicEmissionBeamData()
        {
        }

        public int getMarshalledSize()
        {
            int marshalSize = 0; 

            marshalSize = marshalSize + 1;  // _beamDataLength
            marshalSize = marshalSize + 1;  // _beamIDNumber
            marshalSize = marshalSize + 2;  // _beamParameterIndex
            marshalSize = marshalSize + _fundamentalParameterData.getMarshalledSize();  // _fundamentalParameterData
            marshalSize = marshalSize + 1;  // _beamFunction
            marshalSize = marshalSize + 1;  // _numberOfTrackJamTargets
            marshalSize = marshalSize + 1;  // _highDensityTrackJam
            marshalSize = marshalSize + 1;  // _pad4
            marshalSize = marshalSize + 4;  // _jammingModeSequence
            for(int idx=0; idx < _trackJamTargets.Count; idx++)
            {
                TrackJamTarget listElement = (TrackJamTarget)_trackJamTargets[idx];
                marshalSize = marshalSize + listElement.getMarshalledSize();
            }

            return marshalSize;
        }


        ///<summary>
        ///This field shall specify the length of this beams data in 32 bit words
        ///</summary>
        public void setBeamDataLength(byte pBeamDataLength)
        { 
            _beamDataLength = pBeamDataLength;
        }

        [XmlElement(Type= typeof(byte), ElementName="beamDataLength")]
        public byte BeamDataLength
        {
            get
            {
                return _beamDataLength;
            }
            set
            {
                _beamDataLength = value;
            }
        }

        ///<summary>
        ///This field shall specify a unique emitter database number assigned to differentiate between otherwise similar or identical emitter beams within an emitter system.
        ///</summary>
        public void setBeamIDNumber(byte pBeamIDNumber)
        { 
            _beamIDNumber = pBeamIDNumber;
        }

        [XmlElement(Type= typeof(byte), ElementName="beamIDNumber")]
        public byte BeamIDNumber
        {
            get
            {
                return _beamIDNumber;
            }
            set
            {
                _beamIDNumber = value;
            }
        }

        ///<summary>
        ///This field shall specify a Beam Parameter Index number that shall be used by receiving entities in conjunction with the Emitter Name field to provide a pointer to the stored database parameters required to regenerate the beam. 
        ///</summary>
        public void setBeamParameterIndex(ushort pBeamParameterIndex)
        { 
            _beamParameterIndex = pBeamParameterIndex;
        }

        [XmlElement(Type= typeof(ushort), ElementName="beamParameterIndex")]
        public ushort BeamParameterIndex
        {
            get
            {
                return _beamParameterIndex;
            }
            set
            {
                _beamParameterIndex = value;
            }
        }

        ///<summary>
        ///Fundamental parameter data such as frequency range, beam sweep, etc.
        ///</summary>
        public void setFundamentalParameterData(FundamentalParameterData pFundamentalParameterData)
        { 
            _fundamentalParameterData = pFundamentalParameterData;
        }

        ///<summary>
        ///Fundamental parameter data such as frequency range, beam sweep, etc.
        ///</summary>
        public FundamentalParameterData getFundamentalParameterData()
        {
            return _fundamentalParameterData;
        }

        ///<summary>
        ///Fundamental parameter data such as frequency range, beam sweep, etc.
        ///</summary>
        [XmlElement(Type= typeof(FundamentalParameterData), ElementName="fundamentalParameterData")]
        public FundamentalParameterData FundamentalParameterData
        {
            get
            {
                return _fundamentalParameterData;
            }
            set
            {
                _fundamentalParameterData = value;
            }
        }

        ///<summary>
        ///beam function of a particular beam
        ///</summary>
        public void setBeamFunction(byte pBeamFunction)
        { 
            _beamFunction = pBeamFunction;
        }

        [XmlElement(Type= typeof(byte), ElementName="beamFunction")]
        public byte BeamFunction
        {
            get
            {
                return _beamFunction;
            }
            set
            {
                _beamFunction = value;
            }
        }

        /// <summary>
        /// Note that setting this value will not change the marshalled value. The list whose length this describes is used for that purpose.
        /// The getnumberOfTrackJamTargets method will also be based on the actual list length rather than this value. 
        /// The method is simply here for completeness and should not be used for any computations.
        /// </summary>
        public void setNumberOfTrackJamTargets(byte pNumberOfTrackJamTargets)
        {
            _numberOfTrackJamTargets = pNumberOfTrackJamTargets;
        }

        /// <summary>
        /// Note that setting this value will not change the marshalled value. The list whose length this describes is used for that purpose.
        /// The getnumberOfTrackJamTargets method will also be based on the actual list length rather than this value. 
        /// The method is simply here for completeness and should not be used for any computations.
        /// </summary>
        [XmlElement(Type= typeof(byte), ElementName="numberOfTrackJamTargets")]
        public byte NumberOfTrackJamTargets
        {
            get
            {
                return _numberOfTrackJamTargets;
            }
            set
            {
                _numberOfTrackJamTargets = value;
            }
        }

        ///<summary>
        ///wheher or not the receiving simulation apps can assume all the targets in the scan pattern are being tracked/jammed
        ///</summary>
        public void setHighDensityTrackJam(byte pHighDensityTrackJam)
        { 
            _highDensityTrackJam = pHighDensityTrackJam;
        }

        [XmlElement(Type= typeof(byte), ElementName="highDensityTrackJam")]
        public byte HighDensityTrackJam
        {
            get
            {
                return _highDensityTrackJam;
            }
            set
            {
                _highDensityTrackJam = value;
            }
        }

        ///<summary>
        ///padding
        ///</summary>
        public void setPad4(byte pPad4)
        { 
            _pad4 = pPad4;
        }

        [XmlElement(Type= typeof(byte), ElementName="pad4")]
        public byte Pad4
        {
            get
            {
                return _pad4;
            }
            set
            {
                _pad4 = value;
            }
        }

        ///<summary>
        ///identify jamming techniques used
        ///</summary>
        public void setJammingModeSequence(uint pJammingModeSequence)
        { 
            _jammingModeSequence = pJammingModeSequence;
        }

        [XmlElement(Type= typeof(uint), ElementName="jammingModeSequence")]
        public uint JammingModeSequence
        {
            get
            {
                return _jammingModeSequence;
            }
            set
            {
                _jammingModeSequence = value;
            }
        }

        ///<summary>
        ///variable length list of track/jam targets
        ///</summary>
        public void setTrackJamTargets(List<TrackJamTarget> pTrackJamTargets)
        {
            _trackJamTargets = pTrackJamTargets;
        }

        ///<summary>
        ///variable length list of track/jam targets
        ///</summary>
        public List<TrackJamTarget> getTrackJamTargets()
        {
            return _trackJamTargets;
        }

        ///<summary>
        ///variable length list of track/jam targets
        ///</summary>
        [XmlElement(ElementName = "trackJamTargetsList",Type = typeof(List<TrackJamTarget>))]
        public List<TrackJamTarget> TrackJamTargets
        {
            get
            {
                return _trackJamTargets;
            }
            set
            {
                _trackJamTargets = value;
            }
        }


        ///<summary>
        ///Marshal the data to the DataOutputStream.  Note: Length needs to be set before calling this method
        ///</summary>
        public void marshal(DataOutputStream dos)
        {
            try
            {
                dos.writeByte((byte)_beamDataLength);
                dos.writeByte((byte)_beamIDNumber);
                dos.writeUshort((ushort)_beamParameterIndex);
                _fundamentalParameterData.marshal(dos);
                dos.writeByte((byte)_beamFunction);
                dos.writeByte((byte)_trackJamTargets.Count);
                dos.writeByte((byte)_highDensityTrackJam);
                dos.writeByte((byte)_pad4);
                dos.writeUint((uint)_jammingModeSequence);

                for(int idx = 0; idx < _trackJamTargets.Count; idx++)
                {
                    TrackJamTarget aTrackJamTarget = (TrackJamTarget)_trackJamTargets[idx];
                    aTrackJamTarget.marshal(dos);
                } // end of list marshalling

            } // end try
            catch(Exception e)
            {
                Trace.WriteLine(e);
                Trace.Flush();
            }
        } // end of marshal method

        public void unmarshal(DataInputStream dis)
        {
            try
            {
                _beamDataLength = dis.readByte();
                _beamIDNumber = dis.readByte();
                _beamParameterIndex = dis.readUshort();
                _fundamentalParameterData.unmarshal(dis);
                _beamFunction = dis.readByte();
                _numberOfTrackJamTargets = dis.readByte();
                _highDensityTrackJam = dis.readByte();
                _pad4 = dis.readByte();
                _jammingModeSequence = dis.readUint();
                for(int idx = 0; idx < _numberOfTrackJamTargets; idx++)
                {
                    TrackJamTarget anX = new TrackJamTarget();
                    anX.unmarshal(dis);
                    _trackJamTargets.Add(anX);
                };

            } // end try
            catch(Exception e)
            {
                Trace.WriteLine(e);
                Trace.Flush();
            }
        } // end of unmarshal method

        ///<summary>
        ///This allows for a quick display of PDU data.  The current format is unacceptable and only used for debugging.
        ///This will be modified in the future to provide a better display.  Usage: 
        ///pdu.GetType().InvokeMember("reflection", System.Reflection.BindingFlags.InvokeMethod, null, pdu, new object[] { sb });
        ///where pdu is an object representing a single pdu and sb is a StringBuilder.
        ///Note: The supplied Utilities folder contains a method called 'DecodePDU' in the PDUProcessor Class that provides this functionality
        ///</summary>
        public void reflection(StringBuilder sb)
        {
            sb.Append("<ElectronicEmissionBeamData>"  + System.Environment.NewLine);
            try
            {
                sb.Append("<beamDataLength type=\"byte\">" + _beamDataLength.ToString() + "</beamDataLength> " + System.Environment.NewLine);
                sb.Append("<beamIDNumber type=\"byte\">" + _beamIDNumber.ToString() + "</beamIDNumber> " + System.Environment.NewLine);
                sb.Append("<beamParameterIndex type=\"ushort\">" + _beamParameterIndex.ToString() + "</beamParameterIndex> " + System.Environment.NewLine);
                sb.Append("<fundamentalParameterData>"  + System.Environment.NewLine);
                _fundamentalParameterData.reflection(sb);
                sb.Append("</fundamentalParameterData>"  + System.Environment.NewLine);
                sb.Append("<beamFunction type=\"byte\">" + _beamFunction.ToString() + "</beamFunction> " + System.Environment.NewLine);
                sb.Append("<trackJamTargets type=\"byte\">" + _trackJamTargets.Count.ToString() + "</trackJamTargets> " + System.Environment.NewLine);
                sb.Append("<highDensityTrackJam type=\"byte\">" + _highDensityTrackJam.ToString() + "</highDensityTrackJam> " + System.Environment.NewLine);
                sb.Append("<pad4 type=\"byte\">" + _pad4.ToString() + "</pad4> " + System.Environment.NewLine);
                sb.Append("<jammingModeSequence type=\"uint\">" + _jammingModeSequence.ToString() + "</jammingModeSequence> " + System.Environment.NewLine);

            for(int idx = 0; idx < _trackJamTargets.Count; idx++)
            {
                sb.Append("<trackJamTargets"+ idx.ToString() + " type=\"TrackJamTarget\">" + System.Environment.NewLine);
                TrackJamTarget aTrackJamTarget = (TrackJamTarget)_trackJamTargets[idx];
                aTrackJamTarget.reflection(sb);
                sb.Append("</trackJamTargets"+ idx.ToString() + ">" + System.Environment.NewLine);
            } // end of list marshalling

                sb.Append("</ElectronicEmissionBeamData>"  + System.Environment.NewLine);
            } // end try
            catch(Exception e)
            {
                Trace.WriteLine(e);
                Trace.Flush();
            }
        } // end of reflection method

        public static bool operator !=(ElectronicEmissionBeamData a, ElectronicEmissionBeamData b)
        {
            return !(a == b);
        }

        public static bool operator ==(ElectronicEmissionBeamData a, ElectronicEmissionBeamData b)
        {
            if (System.Object.ReferenceEquals(a, b))
            {
                return true;
            }

            if (((object)a == null) || ((object)b == null))
            {
                return false;
            }

            return a.equals(b);
        }


        public override bool Equals(object obj)
        {
            return this == obj as ElectronicEmissionBeamData;
        }


        /**
         * Compares for reference equality and value equality.
         */
        public bool equals(ElectronicEmissionBeamData rhs)
        {
            bool ivarsEqual = true;

            if(rhs.GetType() != this.GetType())
                return false;


            if( ! (_beamDataLength == rhs._beamDataLength)) ivarsEqual = false;
            if( ! (_beamIDNumber == rhs._beamIDNumber)) ivarsEqual = false;
            if( ! (_beamParameterIndex == rhs._beamParameterIndex)) ivarsEqual = false;
            if( ! (_fundamentalParameterData.Equals( rhs._fundamentalParameterData) )) ivarsEqual = false;
            if( ! (_beamFunction == rhs._beamFunction)) ivarsEqual = false;
            if( ! (_numberOfTrackJamTargets == rhs._numberOfTrackJamTargets)) ivarsEqual = false;
            if( ! (_highDensityTrackJam == rhs._highDensityTrackJam)) ivarsEqual = false;
            if( ! (_pad4 == rhs._pad4)) ivarsEqual = false;
            if( ! (_jammingModeSequence == rhs._jammingModeSequence)) ivarsEqual = false;

            if( ! (_trackJamTargets.Count == rhs._trackJamTargets.Count)) ivarsEqual = false;
            if(ivarsEqual)
            {
                for(int idx = 0; idx < _trackJamTargets.Count; idx++)
                {
                    if( ! ( _trackJamTargets[idx].Equals(rhs._trackJamTargets[idx]))) ivarsEqual = false;
                }
            }


            return ivarsEqual;
        }

        /**
         * HashCode Helper
         */
        private int GenerateHash(int hash)
        {
            hash = hash << 5 + hash;
            return(hash);
        }


        /**
         * Return Hash
         */
        public override int GetHashCode()
        {
            int result = 0;

            result = GenerateHash(result) ^ _beamDataLength.GetHashCode();
            result = GenerateHash(result) ^ _beamIDNumber.GetHashCode();
            result = GenerateHash(result) ^ _beamParameterIndex.GetHashCode();
            result = GenerateHash(result) ^ _fundamentalParameterData.GetHashCode();
            result = GenerateHash(result) ^ _beamFunction.GetHashCode();
            result = GenerateHash(result) ^ _numberOfTrackJamTargets.GetHashCode();
            result = GenerateHash(result) ^ _highDensityTrackJam.GetHashCode();
            result = GenerateHash(result) ^ _pad4.GetHashCode();
            result = GenerateHash(result) ^ _jammingModeSequence.GetHashCode();

            if(_trackJamTargets.Count > 0)
            {
                for(int idx = 0; idx < _trackJamTargets.Count; idx++)
                {
                    result = GenerateHash(result) ^ _trackJamTargets[idx].GetHashCode();
                }
            }


            return result;
        }
    } // end of class
} // end of namespace

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This article, along with any associated source code and files, is licensed under The BSD License


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