ESpeakTTSClient.java

import java.io.*;

public class ESpeakTTSClient {
    private Process currentProcess;
    
    public ESpeakTTSClient() {
        // Check if espeak is installed
        try {
            Process process = Runtime.getRuntime().exec("espeak --version");
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String version = reader.readLine();
            System.out.println("eSpeak version: " + version);
            
            int exitCode = process.waitFor();
            if (exitCode != 0) {
                throw new RuntimeException("eSpeak is not installed. Please install it first.");
            }
        } catch (IOException | InterruptedException e) {
            throw new RuntimeException("Error checking eSpeak installation: " + e.getMessage());
        }
    }

    public void speakText(String text) throws IOException {
        try {
            // Stop any existing speech
            stopSpeaking();
            
            System.out.println("Attempting to speak text: " + text);
            
            // Use espeak to generate speech directly
            ProcessBuilder pb = new ProcessBuilder(
                "espeak",
                "-v", "en-gb",     // British English voice
                "-s", "120",       // Slower speed for clarity
                "-p", "50",        // Medium pitch
                "-a", "100",       // Full amplitude
                "-g", "5",         // Word gap
                "-k", "5",         // Emphasis
                text              // Text to speak
            );
            
            System.out.println("Starting eSpeak process...");
            currentProcess = pb.start();
            
            // Capture any error output
            BufferedReader errorReader = new BufferedReader(new InputStreamReader(currentProcess.getErrorStream()));
            String errorLine;
            while ((errorLine = errorReader.readLine()) != null) {
                System.err.println("eSpeak error: " + errorLine);
            }
            
            int exitCode = currentProcess.waitFor();
            System.out.println("eSpeak process completed with exit code: " + exitCode);
            
            if (exitCode != 0) {
                System.err.println("Error generating speech with exit code: " + exitCode);
                throw new IOException("Error generating speech: " + exitCode);
            }
            
        } catch (InterruptedException e) {
            System.err.println("Speech generation interrupted: " + e.getMessage());
            throw new IOException("Speech generation interrupted: " + e.getMessage());
        }
    }

    public void stopSpeaking() {
        if (currentProcess != null && currentProcess.isAlive()) {
            currentProcess.destroy();
            try {
                currentProcess.waitFor();
            } catch (InterruptedException e) {
                System.err.println("Error stopping speech: " + e.getMessage());
            }
            currentProcess = null;
        }
    }
}