TTSModule.py 4.6 KB

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  1. # coding: utf8
  2. import hashlib
  3. import logging
  4. import os
  5. from core.FileManager import FileManager
  6. from core.ConfigurationManager import SettingLoader
  7. from core.Players import Mplayer
  8. logging.basicConfig()
  9. logger = logging.getLogger("kalliope")
  10. class TtsGenerateAudioFunctionNotFound(Exception):
  11. pass
  12. class FailToLoadSoundFile(Exception):
  13. pass
  14. class TTSModule(object):
  15. def __init__(self, **kwargs):
  16. """
  17. Mother class of TTS module. Handle:
  18. - Cache: call cache object to create file, delete file, check if file exist
  19. - Player: call the default player to play the generated file
  20. """
  21. # set parameter from what we receive from the settings
  22. self.cache = kwargs.get('cache', False)
  23. self.language = kwargs.get('language', None)
  24. self.voice = kwargs.get('voice', "default")
  25. # the name of the TSS is the name of the Tss module that have instantiated TTSModule
  26. self.tts_caller_name = self.__class__.__name__
  27. # we don't know yet the words that will be converted to an audio and so we don't have the audio path yet too
  28. self.words = None
  29. self.file_path = None
  30. self.base_cache_path = None
  31. # load settings
  32. self.settings = SettingLoader.get_settings()
  33. print "Class TTSModule called from module %s, cache: %s, language: %s, voice: %s" % (self.tts_caller_name,
  34. self.cache,
  35. self.language,
  36. self.voice)
  37. def play_audio(self):
  38. """
  39. Play the audio file
  40. :return:
  41. """
  42. Mplayer.play(self.file_path)
  43. def generate_and_play(self, words, generate_audio_function_from_child=None):
  44. """
  45. Generate an audio file from <words> if not already in cache and call the Player to play it
  46. :param words: Sentence text from which we want to generate an audio file
  47. :param generate_audio_function_from_child: The child function to generate a file if necessary
  48. :return:
  49. """
  50. if generate_audio_function_from_child is None:
  51. raise TtsGenerateAudioFunctionNotFound
  52. self.words = words
  53. # we can generate the file path from info we have
  54. self.file_path = self._get_path_to_store_audio()
  55. if not self.cache:
  56. # no cache, we need to generate the file
  57. generate_audio_function_from_child()
  58. else:
  59. # we check if the file already exist. If not we generate it with the TTS engine
  60. if not self.is_file_already_in_cache():
  61. generate_audio_function_from_child()
  62. # then play the generated audio file
  63. self.play_audio()
  64. # if the user don't want to keep the cache we remove the file
  65. if not self.cache:
  66. FileManager.remove_file(self.file_path)
  67. def _get_path_to_store_audio(self):
  68. """
  69. Get a sentence (a text) an return the full path of the file
  70. Path syntax:
  71. </path/in/settings>/<tts.name>/tts.parameter["language"]/tts.parameter["voice"]/<md5_of_sentence.tts
  72. E.g:
  73. /tmp/kalliope/voxygene/fr/abcd12345.tts
  74. :return: path String
  75. """
  76. md5 = self.generate_md5_from_words(self.words)+".tts"
  77. self.base_cache_path = os.path.join(self.settings.cache_path, self.tts_caller_name, self.language, self.voice)
  78. returned_path = os.path.join(self.base_cache_path, md5)
  79. logger.debug("get_path_to_store_audio return: %s" % returned_path)
  80. return returned_path
  81. @staticmethod
  82. def generate_md5_from_words(words):
  83. """
  84. Generate a md5 hash from received text
  85. :param words: Text to convert into md5 hash
  86. :return: String md5 hash from the received words
  87. """
  88. if isinstance(words, unicode):
  89. words = words.encode('utf-8')
  90. return hashlib.md5(words).hexdigest()
  91. def is_file_already_in_cache(self):
  92. """
  93. Return true if the file to generate has already been generated before
  94. :return:
  95. """
  96. # generate sub folder
  97. FileManager.create_directory(self.base_cache_path)
  98. # check if the audio file exist
  99. exist_in_cache = os.path.exists(self.file_path)
  100. if exist_in_cache:
  101. logger.debug("TTSModule, File already in cache: %s" % self.file_path)
  102. else:
  103. logger.debug("TTSModule, File not yet in cache: %s" % self.file_path)
  104. return exist_in_cache