gistfile1.rb

#!ruby -Ks
require 'rubygems'
require 'ffi'

module VoiceText
  extend FFI::Library
  ffi_lib('vt_jpn')
  
  class INT < FFI::Struct
    layout :val, :int
  end
  attach_function(:VT_GetTTSInfo_JPN, [:int, :pointer, :pointer, :int], :int)
  attach_function(:VT_LOADTTS_JPN, [:ulong, :int, :pointer, :pointer], :short)
  attach_function(:VT_TextToFile_JPN, [:int, :pointer, :pointer, :int, :int, :int, :int, :int, :int, :int], :short)
  attach_function(:VT_UNLOADTTS_JPN, [:int], :void)
  
  VT_LOAD_SUCCESS_CODE = 4
  VT_FILE_API_FMT_S16PCM_WAVE = 4
  
  VOICES = {
    :haruka => [6, 'synthesis/Haruka/'],
    :show => [1, 'synthesis/Show/']
  }
  
  def self.save(text, file, s=:show)
    speaker = VOICES[s]
    if speaker
      infoval = INT.new
      if VT_GetTTSInfo_JPN(VT_LOAD_SUCCESS_CODE, nil, infoval, infoval.size) == 0
        if VT_LOADTTS_JPN(0, speaker[0], speaker[1], nil) == infoval[:val]
          begin
            VT_TextToFile_JPN(VT_FILE_API_FMT_S16PCM_WAVE, 
            text, file, speaker[0], -1, -1, -1, -1, -1, -1)
          ensure
            VT_UNLOADTTS_JPN(speaker[0])
          end
        else
          warn "error VT_LOADTTS_JPN"
        end
      end
    else
      warn "unknow speaker"
    end
  end # def
  
end # module

VoiceText.save("吾輩は猫である。名前はまだ無い。", "test.wav", :show)