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| # modules/tts_handler.py | |
| import subprocess | |
| import platform | |
| import sys | |
| import os | |
| import config | |
| import tempfile | |
| import numpy as np | |
| import wave | |
| def text_to_speech_file(text_to_speak): | |
| """Generate TTS audio file - with fallback to silent audio if TTS fails""" | |
| print(f"AI generating audio for: {text_to_speak[:100]}...") | |
| try: | |
| # Try using system TTS (macOS say command) | |
| if platform.system() == "Darwin": # macOS | |
| with tempfile.NamedTemporaryFile(delete=False, suffix=".wav") as wav_file: | |
| wav_filename = wav_file.name | |
| # Use macOS 'say' command to generate speech | |
| command = ['say', '-o', wav_filename, '--data-format=LEF32@22050', text_to_speak] | |
| process = subprocess.run(command, capture_output=True, text=True, timeout=30) | |
| if process.returncode == 0 and os.path.exists(wav_filename): | |
| print("✅ TTS generated successfully with macOS 'say'") | |
| return wav_filename | |
| else: | |
| print("❌ macOS 'say' command failed, falling back to silent audio") | |
| return create_silent_audio() | |
| # Try Linux TTS options | |
| elif platform.system() == "Linux": | |
| # Check if espeak is available (common on Linux systems) | |
| if subprocess.run(['which', 'espeak'], capture_output=True).returncode == 0: | |
| with tempfile.NamedTemporaryFile(delete=False, suffix=".wav") as wav_file: | |
| wav_filename = wav_file.name | |
| command = ['espeak', '-w', wav_filename, text_to_speak] | |
| process = subprocess.run(command, capture_output=True, text=True, timeout=30) | |
| if process.returncode == 0 and os.path.exists(wav_filename): | |
| print("✅ TTS generated successfully with espeak") | |
| return wav_filename | |
| else: | |
| print("❌ espeak command failed, falling back to silent audio") | |
| return create_silent_audio() | |
| else: | |
| print("❌ No TTS engine available on Linux, using silent audio") | |
| return create_silent_audio() | |
| else: | |
| print("❌ TTS not available on this system, using silent audio") | |
| return create_silent_audio() | |
| except Exception as e: | |
| print(f"❌ TTS generation failed: {e}") | |
| return create_silent_audio() | |
| def create_silent_audio(): | |
| """Create a short silent audio file as fallback""" | |
| try: | |
| with tempfile.NamedTemporaryFile(delete=False, suffix=".wav") as wav_file: | |
| wav_filename = wav_file.name | |
| # Create 1 second of silence | |
| sample_rate = 22050 | |
| duration = 1.0 # seconds | |
| samples = int(sample_rate * duration) | |
| audio_data = np.zeros(samples, dtype=np.int16) | |
| # Write WAV file | |
| with wave.open(wav_filename, 'w') as wav_file: | |
| wav_file.setnchannels(1) # Mono | |
| wav_file.setsampwidth(2) # 2 bytes per sample | |
| wav_file.setframerate(sample_rate) | |
| wav_file.writeframes(audio_data.tobytes()) | |
| print("✅ Silent audio fallback created") | |
| return wav_filename | |
| except Exception as e: | |
| print(f"❌ Even silent audio creation failed: {e}") | |
| return None |