Class: SystemTTSEngine

Inherits:
TTSEngine show all
Defined in:
lib/parse_animation_to_tts.rb

Overview

System TTS Engine Implementation REQUIREMENTS: Implement system TTS backend (espeak, say, festival) SEMANTIC TOKENS: SYSTEM_TTS_BACKEND, SYSTEM_INTEGRATION ARCHITECTURE: System TTS backend with command-line integration IMPLEMENTATION: Use system TTS tools for audio generation TEST: Test system TTS backend functionality

Instance Method Summary collapse

Methods inherited from TTSEngine

#name

Constructor Details

#initialize(config = {}) ⇒ SystemTTSEngine

REQUIREMENTS: Initialize system TTS engine with backend selection SEMANTIC TOKENS: SYSTEM_TTS_INIT, BACKEND_SELECTION ARCHITECTURE: System TTS initialization architecture IMPLEMENTATION: Initialize with specific TTS backend TEST: Test system TTS engine initialization



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# File 'lib/parse_animation_to_tts.rb', line 1317

def initialize(config = {})
  super(config)
  @backend = config[:backend] || detect_available_backend
  @temp_dir = config[:temp_dir] || Dir.mktmpdir
end

Instance Method Details

#available? ⇒ Boolean

REQUIREMENTS: Check if system TTS backend is available SEMANTIC TOKENS: SYSTEM_TTS_AVAIL, BACKEND_CHECK ARCHITECTURE: System TTS availability checking IMPLEMENTATION: Check if TTS backend is installed and working TEST: Test system TTS backend availability

Returns:

  • (Boolean) 


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# File 'lib/parse_animation_to_tts.rb', line 1376

def available?
  case @backend
  when 'espeak'
    system('which espeak > /dev/null 2>&1')
  when 'say'
    system('which say > /dev/null 2>&1')
  when 'festival'
    system('which festival > /dev/null 2>&1')
  else
    false
  end
end

#generate_audio(text, voice_settings = {}) ⇒ Object

REQUIREMENTS: Generate audio using system TTS tools SEMANTIC TOKENS: SYSTEM_AUDIO_GEN, COMMAND_EXECUTION ARCHITECTURE: System command execution for audio generation IMPLEMENTATION: Execute system TTS commands with voice settings TEST: Test system audio generation with voice settings



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# File 'lib/parse_animation_to_tts.rb', line 1328

def generate_audio(text, voice_settings = {})
  # REQUIREMENTS: Apply voice settings to system TTS commands
  # SEMANTIC TOKENS: VOICE_SETTINGS_APP, COMMAND_PARAMETERS
  # ARCHITECTURE: Voice settings to command parameter mapping
  # IMPLEMENTATION: Convert voice settings to TTS command parameters
  # TEST: Test voice settings application to system commands
  settings = @voice_settings.merge(voice_settings)
  
  # REQUIREMENTS: Generate temporary audio file
  # SEMANTIC TOKENS: TEMP_FILE_GEN, AUDIO_OUTPUT
  # ARCHITECTURE: Temporary file management for audio generation
  # IMPLEMENTATION: Create temporary audio file with unique name
  # TEST: Test temporary audio file generation
  temp_file = File.join(@temp_dir, "tts_#{Time.now.to_i}_#{rand(1000)}.aiff")
  
  # REQUIREMENTS: Execute system TTS command with voice settings
  # SEMANTIC TOKENS: SYSTEM_COMMAND_EXECUTION, TTS_PROCESSING
  # ARCHITECTURE: System command execution architecture
  # IMPLEMENTATION: Execute TTS command with proper parameters
  # TEST: Test system command execution with voice settings
  case @backend
  when 'espeak'
    generate_with_espeak(text, temp_file, settings)
  when 'say'
    generate_with_say(text, temp_file, settings)
  when 'festival'
    generate_with_festival(text, temp_file, settings)
  else
    raise "Unsupported TTS backend: #{@backend}"
  end
  
  # REQUIREMENTS: Validate generated audio file
  # SEMANTIC TOKENS: AUDIO_FILE_VALID, QUALITY_CHECK
  # ARCHITECTURE: Audio file validation architecture
  # IMPLEMENTATION: Verify audio file was created successfully
  # TEST: Test audio file validation and quality checks
  unless File.exist?(temp_file) && File.size(temp_file) > 0
    raise "Failed to generate audio file"
  end
  
  temp_file
end

#supported_formats ⇒ Object

REQUIREMENTS: Get supported audio formats for system TTS SEMANTIC TOKENS: SYSTEM_AUDIO_FORMATS, FORMAT_SUPPORT ARCHITECTURE: System audio format support IMPLEMENTATION: Return formats supported by system TTS TEST: Test system audio format support



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# File 'lib/parse_animation_to_tts.rb', line 1394

def supported_formats
  case @backend
  when 'espeak'
    ['wav', 'mp3']
  when 'say'
    ['wav', 'aiff']
  when 'festival'
    ['wav']
  else
    ['wav']
  end
end