Merge pull request #9 from lucidcode/auralize

Add option to listen to graph

Halovision/DataChunk.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace lucidcode.LucidScribe.Plugin.Halovision
+{
+    internal class DataChunk
+    {
+        private const string CHUNK_ID = "data";
+
+        public string ChunkId { get; private set; }
+        public UInt32 ChunkSize { get; set; }
+        public short[] WaveData { get; private set; }
+
+        public DataChunk()
+        {
+            ChunkId = CHUNK_ID;
+            ChunkSize = 0;
+        }
+
+        public UInt32 Length()
+        {
+            return (UInt32)GetBytes().Length;
+        }
+
+        public byte[] GetBytes()
+        {
+            List<Byte> chunkBytes = new List<Byte>();
+
+            chunkBytes.AddRange(Encoding.ASCII.GetBytes(ChunkId));
+            chunkBytes.AddRange(BitConverter.GetBytes(ChunkSize));
+            byte[] bufferBytes = new byte[WaveData.Length * 2];
+            Buffer.BlockCopy(WaveData, 0, bufferBytes, 0,
+               bufferBytes.Length);
+            chunkBytes.AddRange(bufferBytes.ToList());
+
+            return chunkBytes.ToArray();
+        }
+
+        public void AddSampleData(short[] leftBuffer,
+           short[] rightBuffer)
+        {
+            WaveData = new short[leftBuffer.Length +
+               rightBuffer.Length];
+            int bufferOffset = 0;
+            for (int index = 0; index < WaveData.Length; index += 2)
+            {
+                WaveData[index] = leftBuffer[bufferOffset];
+                WaveData[index + 1] = rightBuffer[bufferOffset];
+                bufferOffset++;
+            }
+            ChunkSize = (UInt32)WaveData.Length * 2;
+        }
+    }
+}

Halovision/FormatChunk.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace lucidcode.LucidScribe.Plugin.Halovision
+{
+    internal class FormatChunk
+    {
+        private ushort _bitsPerSample;
+        private ushort _channels;
+        private uint _frequency;
+        private const string CHUNK_ID = "fmt ";
+
+        public string ChunkId { get; private set; }
+        public UInt32 ChunkSize { get; private set; }
+        public UInt16 FormatTag { get; private set; }
+
+        public UInt16 Channels
+        {
+            get { return _channels; }
+            set { _channels = value; RecalcBlockSizes(); }
+        }
+
+        public UInt32 Frequency
+        {
+            get { return _frequency; }
+            set { _frequency = value; RecalcBlockSizes(); }
+        }
+
+        public UInt32 AverageBytesPerSec { get; private set; }
+        public UInt16 BlockAlign { get; private set; }
+
+        public UInt16 BitsPerSample
+        {
+            get { return _bitsPerSample; }
+            set { _bitsPerSample = value; RecalcBlockSizes(); }
+        }
+
+        public FormatChunk()
+        {
+            ChunkId = CHUNK_ID;
+            ChunkSize = 16;
+            FormatTag = 1;       // MS PCM (Uncompressed wave file)
+            Channels = 2;        // Default to stereo
+            Frequency = 44100;   // Default to 44100hz
+            BitsPerSample = 16;  // Default to 16bits
+            RecalcBlockSizes();
+        }
+
+        private void RecalcBlockSizes()
+        {
+            BlockAlign = (UInt16)(_channels * (_bitsPerSample / 8));
+            AverageBytesPerSec = _frequency * BlockAlign;
+        }
+
+        public byte[] GetBytes()
+        {
+            List<Byte> chunkBytes = new List<byte>();
+
+            chunkBytes.AddRange(Encoding.ASCII.GetBytes(ChunkId));
+            chunkBytes.AddRange(BitConverter.GetBytes(ChunkSize));
+            chunkBytes.AddRange(BitConverter.GetBytes(FormatTag));
+            chunkBytes.AddRange(BitConverter.GetBytes(Channels));
+            chunkBytes.AddRange(BitConverter.GetBytes(Frequency));
+            chunkBytes.AddRange(BitConverter.GetBytes(AverageBytesPerSec));
+            chunkBytes.AddRange(BitConverter.GetBytes(BlockAlign));
+            chunkBytes.AddRange(BitConverter.GetBytes(BitsPerSample));
+
+            return chunkBytes.ToArray();
+        }
+
+        public UInt32 Length()
+        {
+            return (UInt32)GetBytes().Length;
+        }
+    }
+}

Halovision/Halovision.csproj

@@ -177,12 +177,15 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="DataChunk.cs" />
+    <Compile Include="FormatChunk.cs" />
     <Compile Include="PluginHandler.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
+    <Compile Include="SineGenerator.cs" />
     <Compile Include="TCMP.cs" />
     <Compile Include="VisionForm.cs">
       <SubType>Form</SubType>
@@ -192,6 +195,7 @@
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="VLC.cs" />
+    <Compile Include="WaveHeader.cs" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Properties\Resources.resx">

Halovision/PluginHandler.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
+using System.Media;
 using System.Threading;
 using System.Windows.Forms;
 
@@ -126,6 +128,14 @@ public static bool TCMP
                 return visionForm.TCMP;
             }
         }
+
+        public static bool Auralize
+        {
+            get
+            {
+                return visionForm.Auralize;
+            }
+        }
     }
 
     namespace EyeMin
@@ -251,6 +261,8 @@ namespace Vision
     {
         public class PluginHandler : lucidcode.LucidScribe.Interface.LucidPluginBase
         {
+            SoundPlayer sound = new SoundPlayer();
+
             public override string Name
             {
                 get
@@ -268,13 +280,37 @@ public override double Value
             {
                 get
                 {
-                    double tempValue = Device.GetVision();
-                    if (tempValue > 999) { tempValue = 999; }
-                    if (tempValue < 0) { tempValue = 0; }
-                    return tempValue;
+                    double vision = Device.GetVision();
+                    if (vision > 999) { vision = 999; }
+                    if (vision < 0) { vision = 0; }
+
+                    if (Device.Auralize && vision > 0) {
+                        Auralize(vision);
+                    }
+
+                    return vision;
                 }
             }
 
+            private void Auralize(double frequency)
+            {
+                var header = new WaveHeader();
+                var format = new FormatChunk();
+                var austioChunk = new DataChunk();
+                var sineData = new SineGenerator(frequency);
+
+                austioChunk.AddSampleData(sineData.Data, sineData.Data);
+                header.FileLength += format.Length() + austioChunk.Length();
+
+                var soundBytes = new List<byte>();
+                soundBytes.AddRange(header.GetBytes());
+                soundBytes.AddRange(format.GetBytes());
+                soundBytes.AddRange(austioChunk.GetBytes());
+
+                sound.Stream = new MemoryStream(soundBytes.ToArray());
+                sound.Play();
+            }
+
             public override void Dispose()
             {
                 Device.Dispose();

Halovision/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.1.5.0")]
-[assembly: AssemblyFileVersion("1.1.5.0")]
+[assembly: AssemblyVersion("1.1.6.0")]
+[assembly: AssemblyFileVersion("1.1.6.0")]

Halovision/SineGenerator.cs

@@ -0,0 +1,37 @@
+using System;
+
+namespace lucidcode.LucidScribe.Plugin.Halovision
+{
+    internal class SineGenerator
+    {
+        private readonly double _frequency;
+        private short[] _dataBuffer;
+
+        public short[] Data { get { return _dataBuffer; } }
+
+        public SineGenerator(double frequency)
+        {
+            _frequency = frequency;
+            GenerateData();
+        }
+
+        private void GenerateData()
+        {
+            UInt32 sampleRate = 44100;
+
+            uint bufferSize = sampleRate / 10;
+            _dataBuffer = new short[bufferSize];
+
+            int amplitude = 32760;
+
+            double timePeriod = (Math.PI * 2 * _frequency) /
+               (sampleRate);
+
+            for (uint index = 0; index < bufferSize - 1; index++)
+            {
+                _dataBuffer[index] = Convert.ToInt16(amplitude *
+                   Math.Sin(timePeriod * index));
+            }
+        }
+    }
+}

Halovision/VisionForm.cs

@@ -51,6 +51,8 @@ public partial class VisionForm : Form
         public int DotThreshold = 200;
         public int DashThreshold = 600;
 
+        public bool Auralize = false;
+
         private VideoCaptureDevice videoSource;
         private Rectangle[] faceRegions;
         private CascadeClassifier cascadeClassifier;
@@ -223,6 +225,7 @@ private void LoadSettings()
                 defaultSettings += "<CopyFromScreen>0</CopyFromScreen>";
                 defaultSettings += "<RecordVideo>0</RecordVideo>";
                 defaultSettings += "<TCMP>0</TCMP>";
+                defaultSettings += "<Auralize>0</Auralize>";
                 defaultSettings += "<DotThreshold>200</DotThreshold>";
                 defaultSettings += "<DashThreshold>600</DashThreshold>";
                 defaultSettings += "<Classifier>None</Classifier>";
@@ -353,6 +356,11 @@ private void LoadSettings()
             {
                 dashThresholdInput.Value = DashThreshold;
             }
+
+            if (xmlSettings.DocumentElement.SelectSingleNode("//Auralize") != null && xmlSettings.DocumentElement.SelectSingleNode("//Auralize").InnerText == "1")
+            {
+                chkAuralize.Checked = true;
+            }
         }
 
         private void cmbDevices_SelectedIndexChanged(object sender, EventArgs e)
@@ -917,6 +925,15 @@ private void SaveSettings()
                 settings += "<TCMP>0</TCMP>";
             }
 
+            if (chkAuralize.Checked)
+            {
+                settings += "<Auralize>1</Auralize>";
+            }
+            else
+            {
+                settings += "<Auralize>0</Auralize>";
+            }
+
             settings += "<DotThreshold>" + dotThresholdInput.Value + "</DotThreshold>";
             settings += "<DashThreshold>" + dashThresholdInput.Value + "</DashThreshold>";
 
@@ -952,6 +969,12 @@ private void chkTCMP_CheckedChanged(object sender, EventArgs e)
             SaveSettings();
         }
 
+        private void chkAuralize_CheckedChanged(object sender, EventArgs e)
+        {
+            Auralize = chkAuralize.Checked;
+            SaveSettings();
+        }
+
         private void txtDeviceURL_TextChanged(object sender, EventArgs e)
         {
             SaveSettings();