feat: Implement advanced audio editing, WSOLA time stretching & project I/O

.github/workflows/stale.yml

@@ -36,4 +36,5 @@ jobs:
           If you are still working on this pull request, please leave a comment indicating that you would like it to remain open.
           Thank you for your contributions. 
         stale-issue-label: 'no-issue-activity'
-        stale-pr-label: 'no-pr-activity'
+        stale-pr-label: 'no-pr-activity'
+        exempt-issue-labels: 'in-progress', 'backlog-feature'

Extensions/SoundFlow.Extensions.WebRtc.Apm/SoundFlow.Extensions.WebRtc.Apm.csproj

@@ -14,7 +14,7 @@
         <RepositoryType>Github</RepositoryType>
         <PackageIcon>logo.png</PackageIcon>
         <PackageReadmeFile>README.md</PackageReadmeFile>
-        <Version>1.0.0</Version>
+        <Version>1.0.1</Version>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
     </PropertyGroup>
 

Samples/SoundFlow.Samples.EditingMixer/Program.cs

@@ -0,0 +1,104 @@
+using SoundFlow.Providers;
+
+namespace SoundFlow.Samples.EditingMixer;
+
+public static class DemoAudio
+{
+    private const int BaseSampleRate = 44100;
+    private const int BaseChannels = 2;
+
+    private static RawDataProvider GenerateTone(TimeSpan duration, float frequency, float amplitude = 0.5f)
+    {
+        var totalSamples = (int)(duration.TotalSeconds * BaseSampleRate * BaseChannels);
+        var samples = new float[totalSamples];
+        float phase = 0;
+        var phaseIncrement = (2 * MathF.PI * frequency) / BaseSampleRate;
+
+        for (var i = 0; i < totalSamples; i += BaseChannels)
+        {
+            var value = MathF.Sin(phase) * amplitude;
+            for (var ch = 0; ch < BaseChannels; ch++)
+            {
+                samples[i + ch] = value;
+            }
+            phase += phaseIncrement;
+            if (phase >= 2 * MathF.PI) phase -= 2 * MathF.PI;
+        }
+        return new RawDataProvider(samples);
+    }
+
+    public static RawDataProvider GenerateShortBeep(TimeSpan duration = default)
+    {
+        if (duration == default) duration = TimeSpan.FromMilliseconds(500);
+        return GenerateTone(duration, 880); // A5 tone
+    }
+
+    public static RawDataProvider GenerateLongTone(TimeSpan duration = default)
+    {
+        if (duration == default) duration = TimeSpan.FromSeconds(6);
+        return GenerateTone(duration, 440); // A4 tone
+    }
+
+    public static RawDataProvider GenerateSpeechFragment(TimeSpan duration = default)
+    {
+        if (duration == default) duration = TimeSpan.FromSeconds(5);
+        return GenerateTone(duration, 220, 0.4f); // Simulating speech with A3
+    }
+
+    public static RawDataProvider GenerateMusicLoop(TimeSpan duration = default)
+    {
+        if (duration == default) duration = TimeSpan.FromSeconds(2);
+        return GenerateTone(duration, 660, 0.6f); // E5 tone
+    }
+
+    public static RawDataProvider GenerateFxSound(TimeSpan duration = default)
+    {
+        if (duration == default) duration = TimeSpan.FromSeconds(1);
+        return GenerateTone(duration, 1320, 0.7f); // E6 tone
+    }
+
+    public static TimeSpan Ts(string timestamp)
+    {
+        var parts = timestamp.Split([':', '-'], StringSplitOptions.RemoveEmptyEntries);
+        return new TimeSpan(0, 0, int.Parse(parts[0]), int.Parse(parts[1]), int.Parse(parts[2]));
+    }
+}
+
+
+public static class Program
+{
+    private static void Main()
+    {
+        Console.WriteLine("SoundFlow Editing Module Examples");
+        Console.WriteLine("=================================");
+
+        var running = true;
+        while (running)
+        {
+            Console.WriteLine("\nChoose an examples set to run:");
+            Console.WriteLine(" 1. Speech Dialogue Between Adam & Bella");
+            Console.WriteLine(" 2. Basic Tone Based Composition");
+            Console.WriteLine(" 3. Project Persistence (Save & Load)");
+            Console.WriteLine(" 0. Exit");
+            Console.Write("Enter your choice: ");
+
+            if (int.TryParse(Console.ReadLine(), out var choice))
+            {
+                switch (choice)
+                {
+                    case 1: SpeechBasedExamples.Run(); break;
+                    case 2: ToneBasedExamples.Run(); break;
+                    case 3: PersistenceExamples.Run(); break;
+                    case 0: running = false; break;
+                    default: Console.WriteLine("Invalid choice. Please try again."); break;
+                }
+            }
+            else
+            {
+                Console.WriteLine("Invalid input. Please enter a number.");
+            }
+        }
+
+        Console.WriteLine("Exited.");
+    }
+}

Samples/SoundFlow.Samples.EditingMixer/SoundFlow.Samples.EditingMixer.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\..\Src\SoundFlow.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <None Update="Adam.wav">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </None>
+      <None Update="Bella.wav">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </None>
+    </ItemGroup>
+
+</Project>