mute
8585972a1e
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
95 lines
2.7 KiB
C#
95 lines
2.7 KiB
C#
using System.Runtime.InteropServices;
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using System.Windows.Forms;
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namespace Robovoice.App;
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internal sealed class PttHotkey : IDisposable
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{
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private const int WH_KEYBOARD_LL = 13;
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private const int WM_KEYDOWN = 0x0100;
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private const int WM_KEYUP = 0x0101;
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private const int WM_SYSKEYDOWN = 0x0104;
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private const int WM_SYSKEYUP = 0x0105;
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private readonly LowLevelKeyboardProc _proc;
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private IntPtr _hook = IntPtr.Zero;
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private bool _isDown;
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private bool _disposed;
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public Keys Key { get; set; } = Keys.F8;
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public event EventHandler? Pressed;
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public event EventHandler? Released;
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public PttHotkey()
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{
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_proc = HookCallback;
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}
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public void Install()
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{
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ObjectDisposedException.ThrowIf(_disposed, this);
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if (_hook != IntPtr.Zero) return;
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IntPtr hModule = GetModuleHandle(null);
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_hook = SetWindowsHookEx(WH_KEYBOARD_LL, _proc, hModule, 0);
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}
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public void Uninstall()
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{
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if (_hook != IntPtr.Zero)
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{
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UnhookWindowsHookEx(_hook);
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_hook = IntPtr.Zero;
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_isDown = false;
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}
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}
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private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
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{
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if (nCode >= 0)
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{
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int vkCode = Marshal.ReadInt32(lParam);
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Keys key = (Keys)vkCode;
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bool isDown = wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN;
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bool isUp = wParam == WM_KEYUP || wParam == WM_SYSKEYUP;
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if (key == Key && isDown && !_isDown)
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{
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_isDown = true;
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Pressed?.Invoke(this, EventArgs.Empty);
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}
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else if (key == Key && isUp && _isDown)
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{
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_isDown = false;
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Released?.Invoke(this, EventArgs.Empty);
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}
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}
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return CallNextHookEx(_hook, nCode, wParam, lParam);
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}
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public void Dispose()
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{
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if (_disposed) return;
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Uninstall();
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_disposed = true;
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}
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private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
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[DllImport("user32.dll", SetLastError = true)]
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private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
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[DllImport("user32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool UnhookWindowsHookEx(IntPtr hhk);
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[DllImport("user32.dll", SetLastError = true)]
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private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
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[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
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private static extern IntPtr GetModuleHandle(string? lpModuleName);
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}
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