Initial commit. That was a fun challenge!
This commit is contained in:
commit
37f310a1b1
8 changed files with 852 additions and 0 deletions
434
.gitignore
vendored
Normal file
434
.gitignore
vendored
Normal file
|
|
@ -0,0 +1,434 @@
|
||||||
|
|
||||||
|
# Created by https://www.gitignore.io/api/visualstudio,monodevelop,csharp
|
||||||
|
|
||||||
|
### Csharp ###
|
||||||
|
## Ignore Visual Studio temporary files, build results, and
|
||||||
|
## files generated by popular Visual Studio add-ons.
|
||||||
|
##
|
||||||
|
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
|
||||||
|
|
||||||
|
# User-specific files
|
||||||
|
*.suo
|
||||||
|
*.user
|
||||||
|
*.userosscache
|
||||||
|
*.sln.docstates
|
||||||
|
|
||||||
|
# User-specific files (MonoDevelop/Xamarin Studio)
|
||||||
|
*.userprefs
|
||||||
|
|
||||||
|
# Build results
|
||||||
|
[Dd]ebug/
|
||||||
|
[Dd]ebugPublic/
|
||||||
|
[Rr]elease/
|
||||||
|
[Rr]eleases/
|
||||||
|
x64/
|
||||||
|
x86/
|
||||||
|
bld/
|
||||||
|
[Bb]in/
|
||||||
|
[Oo]bj/
|
||||||
|
[Ll]og/
|
||||||
|
|
||||||
|
# Visual Studio 2015 cache/options directory
|
||||||
|
.vs/
|
||||||
|
# Uncomment if you have tasks that create the project's static files in wwwroot
|
||||||
|
#wwwroot/
|
||||||
|
|
||||||
|
# MSTest test Results
|
||||||
|
[Tt]est[Rr]esult*/
|
||||||
|
[Bb]uild[Ll]og.*
|
||||||
|
|
||||||
|
# NUNIT
|
||||||
|
*.VisualState.xml
|
||||||
|
TestResult.xml
|
||||||
|
|
||||||
|
# Build Results of an ATL Project
|
||||||
|
[Dd]ebugPS/
|
||||||
|
[Rr]eleasePS/
|
||||||
|
dlldata.c
|
||||||
|
|
||||||
|
# .NET Core
|
||||||
|
project.lock.json
|
||||||
|
project.fragment.lock.json
|
||||||
|
artifacts/
|
||||||
|
**/Properties/launchSettings.json
|
||||||
|
|
||||||
|
*_i.c
|
||||||
|
*_p.c
|
||||||
|
*_i.h
|
||||||
|
*.ilk
|
||||||
|
*.meta
|
||||||
|
*.obj
|
||||||
|
*.pch
|
||||||
|
*.pdb
|
||||||
|
*.pgc
|
||||||
|
*.pgd
|
||||||
|
*.rsp
|
||||||
|
*.sbr
|
||||||
|
*.tlb
|
||||||
|
*.tli
|
||||||
|
*.tlh
|
||||||
|
*.tmp
|
||||||
|
*.tmp_proj
|
||||||
|
*.log
|
||||||
|
*.vspscc
|
||||||
|
*.vssscc
|
||||||
|
.builds
|
||||||
|
*.pidb
|
||||||
|
*.svclog
|
||||||
|
*.scc
|
||||||
|
|
||||||
|
# Chutzpah Test files
|
||||||
|
_Chutzpah*
|
||||||
|
|
||||||
|
# Visual C++ cache files
|
||||||
|
ipch/
|
||||||
|
*.aps
|
||||||
|
*.ncb
|
||||||
|
*.opendb
|
||||||
|
*.opensdf
|
||||||
|
*.sdf
|
||||||
|
*.cachefile
|
||||||
|
*.VC.db
|
||||||
|
*.VC.VC.opendb
|
||||||
|
|
||||||
|
# Visual Studio profiler
|
||||||
|
*.psess
|
||||||
|
*.vsp
|
||||||
|
*.vspx
|
||||||
|
*.sap
|
||||||
|
|
||||||
|
# TFS 2012 Local Workspace
|
||||||
|
$tf/
|
||||||
|
|
||||||
|
# Guidance Automation Toolkit
|
||||||
|
*.gpState
|
||||||
|
|
||||||
|
# ReSharper is a .NET coding add-in
|
||||||
|
_ReSharper*/
|
||||||
|
*.[Rr]e[Ss]harper
|
||||||
|
*.DotSettings.user
|
||||||
|
|
||||||
|
# JustCode is a .NET coding add-in
|
||||||
|
.JustCode
|
||||||
|
|
||||||
|
# TeamCity is a build add-in
|
||||||
|
_TeamCity*
|
||||||
|
|
||||||
|
# DotCover is a Code Coverage Tool
|
||||||
|
*.dotCover
|
||||||
|
|
||||||
|
# Visual Studio code coverage results
|
||||||
|
*.coverage
|
||||||
|
*.coveragexml
|
||||||
|
|
||||||
|
# NCrunch
|
||||||
|
_NCrunch_*
|
||||||
|
.*crunch*.local.xml
|
||||||
|
nCrunchTemp_*
|
||||||
|
|
||||||
|
# MightyMoose
|
||||||
|
*.mm.*
|
||||||
|
AutoTest.Net/
|
||||||
|
|
||||||
|
# Web workbench (sass)
|
||||||
|
.sass-cache/
|
||||||
|
|
||||||
|
# Installshield output folder
|
||||||
|
[Ee]xpress/
|
||||||
|
|
||||||
|
# DocProject is a documentation generator add-in
|
||||||
|
DocProject/buildhelp/
|
||||||
|
DocProject/Help/*.HxT
|
||||||
|
DocProject/Help/*.HxC
|
||||||
|
DocProject/Help/*.hhc
|
||||||
|
DocProject/Help/*.hhk
|
||||||
|
DocProject/Help/*.hhp
|
||||||
|
DocProject/Help/Html2
|
||||||
|
DocProject/Help/html
|
||||||
|
|
||||||
|
# Click-Once directory
|
||||||
|
publish/
|
||||||
|
|
||||||
|
# Publish Web Output
|
||||||
|
*.[Pp]ublish.xml
|
||||||
|
*.azurePubxml
|
||||||
|
# TODO: Comment the next line if you want to checkin your web deploy settings
|
||||||
|
# but database connection strings (with potential passwords) will be unencrypted
|
||||||
|
*.pubxml
|
||||||
|
*.publishproj
|
||||||
|
|
||||||
|
# Microsoft Azure Web App publish settings. Comment the next line if you want to
|
||||||
|
# checkin your Azure Web App publish settings, but sensitive information contained
|
||||||
|
# in these scripts will be unencrypted
|
||||||
|
PublishScripts/
|
||||||
|
|
||||||
|
# NuGet Packages
|
||||||
|
*.nupkg
|
||||||
|
# The packages folder can be ignored because of Package Restore
|
||||||
|
**/packages/*
|
||||||
|
# except build/, which is used as an MSBuild target.
|
||||||
|
!**/packages/build/
|
||||||
|
# Uncomment if necessary however generally it will be regenerated when needed
|
||||||
|
#!**/packages/repositories.config
|
||||||
|
# NuGet v3's project.json files produces more ignorable files
|
||||||
|
*.nuget.props
|
||||||
|
*.nuget.targets
|
||||||
|
|
||||||
|
# Microsoft Azure Build Output
|
||||||
|
csx/
|
||||||
|
*.build.csdef
|
||||||
|
|
||||||
|
# Microsoft Azure Emulator
|
||||||
|
ecf/
|
||||||
|
rcf/
|
||||||
|
|
||||||
|
# Windows Store app package directories and files
|
||||||
|
AppPackages/
|
||||||
|
BundleArtifacts/
|
||||||
|
Package.StoreAssociation.xml
|
||||||
|
_pkginfo.txt
|
||||||
|
|
||||||
|
# Visual Studio cache files
|
||||||
|
# files ending in .cache can be ignored
|
||||||
|
*.[Cc]ache
|
||||||
|
# but keep track of directories ending in .cache
|
||||||
|
!*.[Cc]ache/
|
||||||
|
|
||||||
|
# Others
|
||||||
|
ClientBin/
|
||||||
|
~$*
|
||||||
|
*~
|
||||||
|
*.dbmdl
|
||||||
|
*.dbproj.schemaview
|
||||||
|
*.jfm
|
||||||
|
*.pfx
|
||||||
|
*.publishsettings
|
||||||
|
orleans.codegen.cs
|
||||||
|
|
||||||
|
# Since there are multiple workflows, uncomment next line to ignore bower_components
|
||||||
|
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
|
||||||
|
#bower_components/
|
||||||
|
|
||||||
|
# RIA/Silverlight projects
|
||||||
|
Generated_Code/
|
||||||
|
|
||||||
|
# Backup & report files from converting an old project file
|
||||||
|
# to a newer Visual Studio version. Backup files are not needed,
|
||||||
|
# because we have git ;-)
|
||||||
|
_UpgradeReport_Files/
|
||||||
|
Backup*/
|
||||||
|
UpgradeLog*.XML
|
||||||
|
UpgradeLog*.htm
|
||||||
|
|
||||||
|
# SQL Server files
|
||||||
|
*.mdf
|
||||||
|
*.ldf
|
||||||
|
*.ndf
|
||||||
|
|
||||||
|
# Business Intelligence projects
|
||||||
|
*.rdl.data
|
||||||
|
*.bim.layout
|
||||||
|
*.bim_*.settings
|
||||||
|
|
||||||
|
# Microsoft Fakes
|
||||||
|
FakesAssemblies/
|
||||||
|
|
||||||
|
# GhostDoc plugin setting file
|
||||||
|
*.GhostDoc.xml
|
||||||
|
|
||||||
|
# Node.js Tools for Visual Studio
|
||||||
|
.ntvs_analysis.dat
|
||||||
|
node_modules/
|
||||||
|
|
||||||
|
# Typescript v1 declaration files
|
||||||
|
typings/
|
||||||
|
|
||||||
|
# Visual Studio 6 build log
|
||||||
|
*.plg
|
||||||
|
|
||||||
|
# Visual Studio 6 workspace options file
|
||||||
|
*.opt
|
||||||
|
|
||||||
|
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
|
||||||
|
*.vbw
|
||||||
|
|
||||||
|
# Visual Studio LightSwitch build output
|
||||||
|
**/*.HTMLClient/GeneratedArtifacts
|
||||||
|
**/*.DesktopClient/GeneratedArtifacts
|
||||||
|
**/*.DesktopClient/ModelManifest.xml
|
||||||
|
**/*.Server/GeneratedArtifacts
|
||||||
|
**/*.Server/ModelManifest.xml
|
||||||
|
_Pvt_Extensions
|
||||||
|
|
||||||
|
# Paket dependency manager
|
||||||
|
.paket/paket.exe
|
||||||
|
paket-files/
|
||||||
|
|
||||||
|
# FAKE - F# Make
|
||||||
|
.fake/
|
||||||
|
|
||||||
|
# JetBrains Rider
|
||||||
|
.idea/
|
||||||
|
*.sln.iml
|
||||||
|
|
||||||
|
# CodeRush
|
||||||
|
.cr/
|
||||||
|
|
||||||
|
# Python Tools for Visual Studio (PTVS)
|
||||||
|
__pycache__/
|
||||||
|
*.pyc
|
||||||
|
|
||||||
|
# Cake - Uncomment if you are using it
|
||||||
|
# tools/**
|
||||||
|
# !tools/packages.config
|
||||||
|
|
||||||
|
# Telerik's JustMock configuration file
|
||||||
|
*.jmconfig
|
||||||
|
|
||||||
|
# BizTalk build output
|
||||||
|
*.btp.cs
|
||||||
|
*.btm.cs
|
||||||
|
*.odx.cs
|
||||||
|
*.xsd.cs
|
||||||
|
|
||||||
|
### MonoDevelop ###
|
||||||
|
#User Specific
|
||||||
|
*.usertasks
|
||||||
|
|
||||||
|
#Mono Project Files
|
||||||
|
*.resources
|
||||||
|
test-results/
|
||||||
|
|
||||||
|
### VisualStudio ###
|
||||||
|
## Ignore Visual Studio temporary files, build results, and
|
||||||
|
## files generated by popular Visual Studio add-ons.
|
||||||
|
##
|
||||||
|
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
|
||||||
|
|
||||||
|
# User-specific files
|
||||||
|
|
||||||
|
# User-specific files (MonoDevelop/Xamarin Studio)
|
||||||
|
|
||||||
|
# Build results
|
||||||
|
|
||||||
|
# Visual Studio 2015 cache/options directory
|
||||||
|
# Uncomment if you have tasks that create the project's static files in wwwroot
|
||||||
|
#wwwroot/
|
||||||
|
|
||||||
|
# MSTest test Results
|
||||||
|
|
||||||
|
# NUNIT
|
||||||
|
|
||||||
|
# Build Results of an ATL Project
|
||||||
|
|
||||||
|
# .NET Core
|
||||||
|
|
||||||
|
|
||||||
|
# Chutzpah Test files
|
||||||
|
|
||||||
|
# Visual C++ cache files
|
||||||
|
|
||||||
|
# Visual Studio profiler
|
||||||
|
|
||||||
|
# TFS 2012 Local Workspace
|
||||||
|
|
||||||
|
# Guidance Automation Toolkit
|
||||||
|
|
||||||
|
# ReSharper is a .NET coding add-in
|
||||||
|
|
||||||
|
# JustCode is a .NET coding add-in
|
||||||
|
|
||||||
|
# TeamCity is a build add-in
|
||||||
|
|
||||||
|
# DotCover is a Code Coverage Tool
|
||||||
|
|
||||||
|
# Visual Studio code coverage results
|
||||||
|
|
||||||
|
# NCrunch
|
||||||
|
|
||||||
|
# MightyMoose
|
||||||
|
|
||||||
|
# Web workbench (sass)
|
||||||
|
|
||||||
|
# Installshield output folder
|
||||||
|
|
||||||
|
# DocProject is a documentation generator add-in
|
||||||
|
|
||||||
|
# Click-Once directory
|
||||||
|
|
||||||
|
# Publish Web Output
|
||||||
|
# TODO: Comment the next line if you want to checkin your web deploy settings
|
||||||
|
# but database connection strings (with potential passwords) will be unencrypted
|
||||||
|
|
||||||
|
# Microsoft Azure Web App publish settings. Comment the next line if you want to
|
||||||
|
# checkin your Azure Web App publish settings, but sensitive information contained
|
||||||
|
# in these scripts will be unencrypted
|
||||||
|
|
||||||
|
# NuGet Packages
|
||||||
|
# The packages folder can be ignored because of Package Restore
|
||||||
|
# except build/, which is used as an MSBuild target.
|
||||||
|
# Uncomment if necessary however generally it will be regenerated when needed
|
||||||
|
#!**/packages/repositories.config
|
||||||
|
# NuGet v3's project.json files produces more ignorable files
|
||||||
|
|
||||||
|
# Microsoft Azure Build Output
|
||||||
|
|
||||||
|
# Microsoft Azure Emulator
|
||||||
|
|
||||||
|
# Windows Store app package directories and files
|
||||||
|
|
||||||
|
# Visual Studio cache files
|
||||||
|
# files ending in .cache can be ignored
|
||||||
|
# but keep track of directories ending in .cache
|
||||||
|
|
||||||
|
# Others
|
||||||
|
|
||||||
|
# Since there are multiple workflows, uncomment next line to ignore bower_components
|
||||||
|
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
|
||||||
|
#bower_components/
|
||||||
|
|
||||||
|
# RIA/Silverlight projects
|
||||||
|
|
||||||
|
# Backup & report files from converting an old project file
|
||||||
|
# to a newer Visual Studio version. Backup files are not needed,
|
||||||
|
# because we have git ;-)
|
||||||
|
|
||||||
|
# SQL Server files
|
||||||
|
|
||||||
|
# Business Intelligence projects
|
||||||
|
|
||||||
|
# Microsoft Fakes
|
||||||
|
|
||||||
|
# GhostDoc plugin setting file
|
||||||
|
|
||||||
|
# Node.js Tools for Visual Studio
|
||||||
|
|
||||||
|
# Typescript v1 declaration files
|
||||||
|
|
||||||
|
# Visual Studio 6 build log
|
||||||
|
|
||||||
|
# Visual Studio 6 workspace options file
|
||||||
|
|
||||||
|
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
|
||||||
|
|
||||||
|
# Visual Studio LightSwitch build output
|
||||||
|
|
||||||
|
# Paket dependency manager
|
||||||
|
|
||||||
|
# FAKE - F# Make
|
||||||
|
|
||||||
|
# JetBrains Rider
|
||||||
|
|
||||||
|
# CodeRush
|
||||||
|
|
||||||
|
# Python Tools for Visual Studio (PTVS)
|
||||||
|
|
||||||
|
# Cake - Uncomment if you are using it
|
||||||
|
# tools/**
|
||||||
|
# !tools/packages.config
|
||||||
|
|
||||||
|
# Telerik's JustMock configuration file
|
||||||
|
|
||||||
|
# BizTalk build output
|
||||||
|
|
||||||
|
# End of https://www.gitignore.io/api/visualstudio,monodevelop,csharp
|
||||||
17
MorseCodeParser.sln
Normal file
17
MorseCodeParser.sln
Normal file
|
|
@ -0,0 +1,17 @@
|
||||||
|
|
||||||
|
Microsoft Visual Studio Solution File, Format Version 12.00
|
||||||
|
# Visual Studio 2012
|
||||||
|
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MorseCodeParser", "MorseCodeParser\MorseCodeParser.csproj", "{431E17FD-CF16-4B9E-B282-D71CFD2B3AE6}"
|
||||||
|
EndProject
|
||||||
|
Global
|
||||||
|
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||||
|
Debug|x86 = Debug|x86
|
||||||
|
Release|x86 = Release|x86
|
||||||
|
EndGlobalSection
|
||||||
|
GlobalSection(ProjectConfigurationPlatforms) = postSolution
|
||||||
|
{431E17FD-CF16-4B9E-B282-D71CFD2B3AE6}.Debug|x86.ActiveCfg = Debug|x86
|
||||||
|
{431E17FD-CF16-4B9E-B282-D71CFD2B3AE6}.Debug|x86.Build.0 = Debug|x86
|
||||||
|
{431E17FD-CF16-4B9E-B282-D71CFD2B3AE6}.Release|x86.ActiveCfg = Release|x86
|
||||||
|
{431E17FD-CF16-4B9E-B282-D71CFD2B3AE6}.Release|x86.Build.0 = Release|x86
|
||||||
|
EndGlobalSection
|
||||||
|
EndGlobal
|
||||||
201
MorseCodeParser/AudioMorseDecoder.cs
Normal file
201
MorseCodeParser/AudioMorseDecoder.cs
Normal file
|
|
@ -0,0 +1,201 @@
|
||||||
|
using System;
|
||||||
|
using System.Linq;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
|
||||||
|
using NAudio.Wave;
|
||||||
|
using Cairo;
|
||||||
|
|
||||||
|
namespace MorseCodeParser
|
||||||
|
{
|
||||||
|
enum MorseTokenType
|
||||||
|
{
|
||||||
|
ToneStart,
|
||||||
|
ToneEnd
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
struct MorseToken
|
||||||
|
{
|
||||||
|
public MorseTokenType Type;
|
||||||
|
public int Index;
|
||||||
|
|
||||||
|
public MorseToken(MorseTokenType inType, int inIndex)
|
||||||
|
{
|
||||||
|
Type = inType;
|
||||||
|
Index = inIndex;
|
||||||
|
}
|
||||||
|
|
||||||
|
public override string ToString()
|
||||||
|
{
|
||||||
|
return string.Format("[MorseToken {0}\tat {1}]", Type, Index);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
class MorseTone
|
||||||
|
{
|
||||||
|
public int Index;
|
||||||
|
public int Length;
|
||||||
|
|
||||||
|
public MorseTone(int inIndex, int inLength)
|
||||||
|
{
|
||||||
|
Index = inIndex;
|
||||||
|
Length = inLength;
|
||||||
|
}
|
||||||
|
|
||||||
|
public override string ToString()
|
||||||
|
{
|
||||||
|
return string.Format("[MorseTone at {0} of length {1}]", Index, Length);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public class AudioMorseDecoder
|
||||||
|
{
|
||||||
|
private string filename;
|
||||||
|
|
||||||
|
private ISampleProvider samples;
|
||||||
|
private readonly int floatBufferSize = 220500 * 4;
|
||||||
|
private readonly int windowSize = 100;
|
||||||
|
private readonly int stepSize = 25;
|
||||||
|
|
||||||
|
private readonly float threshold = 0.8f;
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
public AudioMorseDecoder(string inFilename)
|
||||||
|
{
|
||||||
|
filename = inFilename;
|
||||||
|
|
||||||
|
AudioFileReader reader = new AudioFileReader(filename);
|
||||||
|
samples = reader.ToSampleProvider();
|
||||||
|
}
|
||||||
|
|
||||||
|
private List<MorseToken> analyzeSamples()
|
||||||
|
{
|
||||||
|
List<MorseToken> result = new List<MorseToken>();
|
||||||
|
|
||||||
|
int buffersRead = 0;
|
||||||
|
float[] rawBuffer = new float[floatBufferSize];
|
||||||
|
float[] windowedBuffer = new float[(floatBufferSize - windowSize) / stepSize];
|
||||||
|
|
||||||
|
int samplesRead;
|
||||||
|
while(true)
|
||||||
|
{
|
||||||
|
samplesRead = samples.Read(rawBuffer, 0, floatBufferSize);
|
||||||
|
|
||||||
|
for(int i = 0, s = 0; i < samplesRead - windowSize; i += stepSize, s++)
|
||||||
|
windowedBuffer[s] = rawBuffer.Skip(i).Take(windowSize).Max();
|
||||||
|
|
||||||
|
for(int i = 1; i < windowedBuffer.Length; i++)
|
||||||
|
{
|
||||||
|
if(windowedBuffer[i - 1] < threshold && windowedBuffer[i] >= threshold)
|
||||||
|
result.Add(new MorseToken(MorseTokenType.ToneStart, (buffersRead * windowedBuffer.Length) + i));
|
||||||
|
else if(windowedBuffer[i - 1] > threshold && windowedBuffer[i] <= threshold)
|
||||||
|
result.Add(new MorseToken(MorseTokenType.ToneEnd, (buffersRead * windowedBuffer.Length) + i));
|
||||||
|
}
|
||||||
|
|
||||||
|
if(samplesRead < floatBufferSize)
|
||||||
|
break;
|
||||||
|
|
||||||
|
buffersRead++;
|
||||||
|
}
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
public List<string> ExtractWords(bool renderImage = false)
|
||||||
|
{
|
||||||
|
List<MorseToken> tokens = analyzeSamples();
|
||||||
|
|
||||||
|
if(renderImage)
|
||||||
|
drawFingerprint(tokens);
|
||||||
|
|
||||||
|
List<MorseTone> tones = new List<MorseTone>();
|
||||||
|
for(int i = 0; i < tokens.Count; i += 2)
|
||||||
|
tones.Add(new MorseTone(tokens[i].Index, tokens[i + 1].Index - tokens[i].Index));
|
||||||
|
|
||||||
|
int longestToneLength = tones.Max((MorseTone tone) => tone.Length);
|
||||||
|
int shortestToneLength = tones.Min((MorseTone tone) => tone.Length);
|
||||||
|
int shortestTonePause = tones.Zip(tones.Skip(1), (a, b) => Tuple.Create(a, b))
|
||||||
|
.Min((Tuple<MorseTone, MorseTone> tonePair) =>
|
||||||
|
tonePair.Item2.Index - (tonePair.Item1.Index + tonePair.Item1.Length)
|
||||||
|
);
|
||||||
|
int longestTonePause = tones.Zip(tones.Skip(1), (a, b) => Tuple.Create(a, b))
|
||||||
|
.Max((Tuple<MorseTone, MorseTone> tonePair) =>
|
||||||
|
tonePair.Item2.Index - (tonePair.Item1.Index + tonePair.Item1.Length)
|
||||||
|
);
|
||||||
|
int mediumTonePause = shortestTonePause * 3;
|
||||||
|
|
||||||
|
List<string> resultWords = new List<string>();
|
||||||
|
string currentWord = "";
|
||||||
|
for(int i = 0; i < tones.Count; i++)
|
||||||
|
{
|
||||||
|
if(i > 0)
|
||||||
|
{
|
||||||
|
int toneSpacing = tones[i].Index - (tones[i - 1].Index + tones[i - 1].Length);
|
||||||
|
|
||||||
|
int distanceToShortestGap = Math.Abs(shortestTonePause - toneSpacing);
|
||||||
|
int distanceToMediumGap = Math.Abs(mediumTonePause - toneSpacing);
|
||||||
|
int distanceToLongestGap = Math.Abs(longestTonePause - toneSpacing);
|
||||||
|
|
||||||
|
if(distanceToMediumGap < distanceToLongestGap && distanceToMediumGap < distanceToShortestGap)
|
||||||
|
{
|
||||||
|
// It's a letter spacing!
|
||||||
|
currentWord += " ";
|
||||||
|
}
|
||||||
|
|
||||||
|
if(distanceToLongestGap < distanceToMediumGap && distanceToLongestGap < distanceToShortestGap)
|
||||||
|
{
|
||||||
|
// It's a word spacing!
|
||||||
|
resultWords.Add(currentWord);
|
||||||
|
currentWord = string.Empty;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if(Math.Abs(longestToneLength - tones[i].Length) < Math.Abs(shortestToneLength - tones[i].Length))
|
||||||
|
{
|
||||||
|
// It's a long tone
|
||||||
|
currentWord += "-";
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// It's a short tone
|
||||||
|
currentWord += ".";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Add the last word decoded to the list
|
||||||
|
resultWords.Add(currentWord);
|
||||||
|
|
||||||
|
return resultWords;
|
||||||
|
}
|
||||||
|
|
||||||
|
private void drawFingerprint(List<MorseToken> tokens)
|
||||||
|
{
|
||||||
|
int fingerprintWidth = 1200, fingerprintHeight = 100;
|
||||||
|
float scaleFactorX = (float)fingerprintWidth / tokens.Last().Index;
|
||||||
|
using(ImageSurface image = new ImageSurface(Format.Argb32, fingerprintWidth, fingerprintHeight))
|
||||||
|
using(Context context = new Context(image))
|
||||||
|
{
|
||||||
|
context.Antialias = Antialias.Subpixel;
|
||||||
|
context.SetSourceColor(new Color(1, 0.4901, 0.1019, 0.8));
|
||||||
|
|
||||||
|
for(int i = 0; i < tokens.Count; i += 2)
|
||||||
|
{
|
||||||
|
MorseToken startToken = tokens[i];
|
||||||
|
MorseToken endToken = tokens[i + 1];
|
||||||
|
context.NewPath();
|
||||||
|
Rectangle tokenArea = new Rectangle(
|
||||||
|
startToken.Index * scaleFactorX,
|
||||||
|
0,
|
||||||
|
(endToken.Index - startToken.Index) * scaleFactorX,
|
||||||
|
fingerprintHeight
|
||||||
|
);
|
||||||
|
context.Rectangle(tokenArea);
|
||||||
|
context.Fill();
|
||||||
|
}
|
||||||
|
|
||||||
|
image.WriteToPng("fingerprint.png");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
49
MorseCodeParser/MorseCodeParser.csproj
Normal file
49
MorseCodeParser/MorseCodeParser.csproj
Normal file
|
|
@ -0,0 +1,49 @@
|
||||||
|
<?xml version="1.0" encoding="utf-8"?>
|
||||||
|
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||||
|
<PropertyGroup>
|
||||||
|
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
|
||||||
|
<Platform Condition=" '$(Platform)' == '' ">x86</Platform>
|
||||||
|
<ProjectGuid>{431E17FD-CF16-4B9E-B282-D71CFD2B3AE6}</ProjectGuid>
|
||||||
|
<OutputType>Exe</OutputType>
|
||||||
|
<RootNamespace>MorseCodeParser</RootNamespace>
|
||||||
|
<AssemblyName>MorseCodeParser</AssemblyName>
|
||||||
|
<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
|
||||||
|
</PropertyGroup>
|
||||||
|
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
|
||||||
|
<DebugSymbols>true</DebugSymbols>
|
||||||
|
<DebugType>full</DebugType>
|
||||||
|
<Optimize>false</Optimize>
|
||||||
|
<OutputPath>bin\Debug</OutputPath>
|
||||||
|
<DefineConstants>DEBUG;</DefineConstants>
|
||||||
|
<ErrorReport>prompt</ErrorReport>
|
||||||
|
<WarningLevel>4</WarningLevel>
|
||||||
|
<ExternalConsole>true</ExternalConsole>
|
||||||
|
<PlatformTarget>x86</PlatformTarget>
|
||||||
|
</PropertyGroup>
|
||||||
|
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
|
||||||
|
<Optimize>true</Optimize>
|
||||||
|
<OutputPath>bin\Release</OutputPath>
|
||||||
|
<ErrorReport>prompt</ErrorReport>
|
||||||
|
<WarningLevel>4</WarningLevel>
|
||||||
|
<ExternalConsole>true</ExternalConsole>
|
||||||
|
<PlatformTarget>x86</PlatformTarget>
|
||||||
|
</PropertyGroup>
|
||||||
|
<PropertyGroup Condition=" '$(RunConfiguration)' == 'Default' ">
|
||||||
|
<StartAction>Project</StartAction>
|
||||||
|
<StartArguments>"/home/sbrl/Music/Morse Code 2.wav"</StartArguments>
|
||||||
|
</PropertyGroup>
|
||||||
|
<ItemGroup>
|
||||||
|
<Reference Include="System" />
|
||||||
|
<Reference Include="NAudio">
|
||||||
|
<HintPath>..\packages\NAudio.1.8.0\lib\net35\NAudio.dll</HintPath>
|
||||||
|
</Reference>
|
||||||
|
<Reference Include="Mono.Cairo" />
|
||||||
|
</ItemGroup>
|
||||||
|
<ItemGroup>
|
||||||
|
<Compile Include="Program.cs" />
|
||||||
|
<Compile Include="Properties\AssemblyInfo.cs" />
|
||||||
|
<Compile Include="MorseDecoder.cs" />
|
||||||
|
<Compile Include="AudioMorseDecoder.cs" />
|
||||||
|
</ItemGroup>
|
||||||
|
<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
|
||||||
|
</Project>
|
||||||
102
MorseCodeParser/MorseDecoder.cs
Normal file
102
MorseCodeParser/MorseDecoder.cs
Normal file
|
|
@ -0,0 +1,102 @@
|
||||||
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
|
||||||
|
namespace SBRL.Algorithms.MorseCodeTranslator
|
||||||
|
{
|
||||||
|
/// <summary>
|
||||||
|
/// A simple class to translate a morse code string into a normal string.
|
||||||
|
/// </summary>
|
||||||
|
/// <license>Mozilla Public License version 2.0</license>
|
||||||
|
/// <origin></origin>
|
||||||
|
/// <author>Starbeamrainbowlabs (https://starbeamrainbowlabs.com/)</author>
|
||||||
|
/// <changelog>
|
||||||
|
/// v0.1 - 26th May 2017:
|
||||||
|
/// - Creation! 😁
|
||||||
|
/// </changelog>
|
||||||
|
public static class MorseDecoder
|
||||||
|
{
|
||||||
|
/// <summary>
|
||||||
|
/// The morse code lookup table. Use the methods in this class is possible,
|
||||||
|
/// rather than accessing this lookup table directly!
|
||||||
|
/// </summary>
|
||||||
|
public static Dictionary<string, char> morseCodeLookup = new Dictionary<string, char>()
|
||||||
|
{
|
||||||
|
[".-"] = 'a',
|
||||||
|
["-..."] = 'b',
|
||||||
|
["-.-."] = 'c',
|
||||||
|
["-.."] = 'd',
|
||||||
|
["."] = 'e',
|
||||||
|
["..-."] = 'f',
|
||||||
|
["--."] = 'g',
|
||||||
|
["...."] = 'h',
|
||||||
|
[".."] = 'i',
|
||||||
|
[".---"] = 'j',
|
||||||
|
["-.-"] = 'k',
|
||||||
|
[".-.."] = 'l',
|
||||||
|
["--"] = 'm',
|
||||||
|
["-."] = 'n',
|
||||||
|
["---"] = 'o',
|
||||||
|
[".--."] = 'p',
|
||||||
|
["--.-"] = 'q',
|
||||||
|
[".-."] = 'r',
|
||||||
|
["..."] = 's',
|
||||||
|
["-"] = 't',
|
||||||
|
["..-"] = 'u',
|
||||||
|
["...-"] = 'v',
|
||||||
|
[".--"] = 'w',
|
||||||
|
["-..-"] = 'x',
|
||||||
|
["-.--"] = 'y',
|
||||||
|
["--.."] = 'z',
|
||||||
|
[".----"] = '1',
|
||||||
|
["..---"] = '2',
|
||||||
|
["...--"] = '3',
|
||||||
|
["....-"] = '4',
|
||||||
|
["....."] = '5',
|
||||||
|
["-...."] = '6',
|
||||||
|
["--..."] = '7',
|
||||||
|
["---.."] = '8',
|
||||||
|
["----."] = '9',
|
||||||
|
["-----"] = '0',
|
||||||
|
};
|
||||||
|
|
||||||
|
/// <summary>
|
||||||
|
/// Translates a single letter from morse code.
|
||||||
|
/// </summary>
|
||||||
|
/// <param name="morseSource">The morse code to translate.</param>
|
||||||
|
/// <returns>The translated letter.</returns>
|
||||||
|
public static char TranslateLetter(string morseSource)
|
||||||
|
{
|
||||||
|
return morseCodeLookup[morseSource.Trim()];
|
||||||
|
}
|
||||||
|
|
||||||
|
/// <summary>
|
||||||
|
/// Translates a string of space-separated morse code strings from morse code.
|
||||||
|
/// </summary>
|
||||||
|
/// <param name="morseSource">The morse code to translate.</param>
|
||||||
|
/// <returns>The translated word.</returns>
|
||||||
|
public static string TranslateWord(string morseSource)
|
||||||
|
{
|
||||||
|
string result = string.Empty;
|
||||||
|
|
||||||
|
string[] morseLetters = morseSource.Split(" ".ToCharArray());
|
||||||
|
|
||||||
|
foreach(string morseLetter in morseLetters)
|
||||||
|
result += TranslateLetter(morseLetter);
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// <summary>
|
||||||
|
/// Translates a list of morse-encoded words.
|
||||||
|
/// </summary>
|
||||||
|
/// <param name="morseSources">The morse-encoded words to decipher.</param>
|
||||||
|
/// <returns>The decoded text.</returns>
|
||||||
|
public static string TranslateText(IEnumerable<string> morseSources)
|
||||||
|
{
|
||||||
|
string result = string.Empty;
|
||||||
|
foreach(string morseSource in morseSources)
|
||||||
|
result += $"{TranslateWord(morseSource)} ";
|
||||||
|
return result.Trim();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
19
MorseCodeParser/Program.cs
Normal file
19
MorseCodeParser/Program.cs
Normal file
|
|
@ -0,0 +1,19 @@
|
||||||
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
|
||||||
|
using SBRL.Algorithms.MorseCodeTranslator;
|
||||||
|
|
||||||
|
namespace MorseCodeParser
|
||||||
|
{
|
||||||
|
class MainClass
|
||||||
|
{
|
||||||
|
public static void Main(string[] args)
|
||||||
|
{
|
||||||
|
AudioMorseDecoder decoder = new AudioMorseDecoder(args[0]);
|
||||||
|
List<string> morseWords = decoder.ExtractWords(true);
|
||||||
|
Console.WriteLine("Decoded morse code:");
|
||||||
|
Console.WriteLine(string.Join("\n", morseWords));
|
||||||
|
Console.WriteLine("Deciphered text: {0}", MorseDecoder.TranslateText(morseWords));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
26
MorseCodeParser/Properties/AssemblyInfo.cs
Normal file
26
MorseCodeParser/Properties/AssemblyInfo.cs
Normal file
|
|
@ -0,0 +1,26 @@
|
||||||
|
using System.Reflection;
|
||||||
|
using System.Runtime.CompilerServices;
|
||||||
|
|
||||||
|
// Information about this assembly is defined by the following attributes.
|
||||||
|
// Change them to the values specific to your project.
|
||||||
|
|
||||||
|
[assembly: AssemblyTitle("MorseCodeParser")]
|
||||||
|
[assembly: AssemblyDescription("")]
|
||||||
|
[assembly: AssemblyConfiguration("")]
|
||||||
|
[assembly: AssemblyCompany("")]
|
||||||
|
[assembly: AssemblyProduct("")]
|
||||||
|
[assembly: AssemblyCopyright("")]
|
||||||
|
[assembly: AssemblyTrademark("")]
|
||||||
|
[assembly: AssemblyCulture("")]
|
||||||
|
|
||||||
|
// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
|
||||||
|
// The form "{Major}.{Minor}.*" will automatically update the build and revision,
|
||||||
|
// and "{Major}.{Minor}.{Build}.*" will update just the revision.
|
||||||
|
|
||||||
|
[assembly: AssemblyVersion("1.0.*")]
|
||||||
|
|
||||||
|
// The following attributes are used to specify the signing key for the assembly,
|
||||||
|
// if desired. See the Mono documentation for more information about signing.
|
||||||
|
|
||||||
|
//[assembly: AssemblyDelaySign(false)]
|
||||||
|
//[assembly: AssemblyKeyFile("")]
|
||||||
4
MorseCodeParser/packages.config
Normal file
4
MorseCodeParser/packages.config
Normal file
|
|
@ -0,0 +1,4 @@
|
||||||
|
<?xml version="1.0" encoding="utf-8"?>
|
||||||
|
<packages>
|
||||||
|
<package id="NAudio" version="1.8.0" targetFramework="net45" />
|
||||||
|
</packages>
|
||||||
Loading…
Reference in a new issue