v0.1: Robovoice — PTT re-voicing app

WinForms tray app that captures text (from file or direct input) and synthesizes speech via libpiper (Piper TTS), outputting to any audio device (VB-CABLE for virtual mic routing). Features: - Global PTT hotkey (configurable F1-F12) via WH_KEYBOARD_LL - Text file sequential reader (line-by-line on each PTT cycle) - Direct text input with Speak button - Voice manager: browse 147-voice Piper catalogue, download, remove - libpiper P/Invoke wrapper with UTF-8 marshaling, streaming chunks - BufferedWaveProvider streaming playback with trailing silence flush - Sentence terminator auto-append (fixes espeak-ng final-word drop) - Tray icon with minimize-to-tray Architecture: - Robovoice.Core: ITtsEngine, ISttSource interfaces, voice catalogue - Robovoice.Tts.LibPiper: P/Invoke wrapper for libpiper.dll - Robovoice.Stt.File: text file STT source (testing without mic server) - Robovoice.Stt.Udp: UDP client stub (for future Linux mic server) - Robovoice.App: WinForms UI, orchestrator, PTT hotkey, audio output
2026-08-10 11:27:28 +00:00
parent 03e6ccf388
commit 8585972a1e
25 changed files with 2005 additions and 0 deletions
@@ -0,0 +1,65 @@
+using System.Runtime.InteropServices;
+
+namespace Robovoice.Tts.LibPiper;
+
+[StructLayout(LayoutKind.Sequential)]
+internal struct PiperSynthesizeOptions
+{
+    public int SpeakerId;
+    public float LengthScale;
+    public float NoiseScale;
+    public float NoiseWScale;
+}
+
+[StructLayout(LayoutKind.Sequential)]
+internal struct PiperAudioChunk
+{
+    public IntPtr Samples;
+    public nuint NumSamples;
+    public int SampleRate;
+
+    [MarshalAs(UnmanagedType.U1)]
+    public bool IsLast;
+
+    public IntPtr Phonemes;
+    public nuint NumPhonemes;
+    public IntPtr PhonemeIds;
+    public nuint NumPhonemeIds;
+    public IntPtr Alignments;
+    public nuint NumAlignments;
+}
+
+internal static class PiperNative
+{
+    private const string LibName = "piper";
+
+    public const int PiperOk = 0;
+    public const int PiperDone = 1;
+    public const int PiperErrGeneric = -1;
+
+    [DllImport(LibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern IntPtr piper_create(
+        IntPtr modelPath,
+        IntPtr configPath,
+        IntPtr espeakDataPath);
+
+    [DllImport(LibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern void piper_free(IntPtr synth);
+
+    [DllImport(LibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern PiperSynthesizeOptions piper_default_synthesize_options(IntPtr synth);
+
+    [DllImport(LibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern int piper_synthesize_start(
+        IntPtr synth,
+        IntPtr text,
+        in PiperSynthesizeOptions options);
+
+    [DllImport(LibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern int piper_synthesize_next(
+        IntPtr synth,
+        out PiperAudioChunk chunk);
+
+    [DllImport(LibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern IntPtr piper_version();
+}