def test_formats(self): self.assertEqual(sox.is_valid_file_format("some.wav"), True, "Wav check failed.") self.assertEqual(sox.is_valid_file_format("booger"), False, "Extension-less format failed.") self.assertEqual(sox.is_valid_file_format("curious.george"), False, "Invalid extension failed.")
def __init__(self, filepath, samplerate=None, channels=None, bytedepth=None, mode="r"): """Base class for interfacing with audio files. When writing audio files, samplerate, channels, and bytedepth must be specified. Otherwise, these parameters may be None when reading to use the default values of the audio file. Parameters ---------- filepath : str Absolute path to a sound file. Does not need to exist (yet). samplerate : float, default=None Samplerate for the audio file. channels : int, default=None Number of channels for the audio file. bytedepth : int, default=None bytedepth (in bytes) of the returned file. For example, CD-quality audio has a bytedepth of 2 (16-bit). mode : str, default='r' Open the file for [r]eading or [w]riting. """ logging.debug(util.classy_print(AudioFile, "Constructor.")) if not sox.is_valid_file_format(filepath): raise ValueError("Cannot handle this filetype: {}" "".format(filepath)) if mode == "w": # TODO: If/raise assert samplerate, "Writing audiofiles requires a samplerate." assert channels, "Writing audiofiles requires channels." assert bytedepth, "Writing audiofiles requires a bytedepth." self._filepath = filepath self._wave_handle = None self._temp_filepath = util.temp_file(formats.WAVE) self._mode = mode logging.debug(util.classy_print(AudioFile, "Opening wave file.")) self.__get_handle__(self.filepath, samplerate, channels, bytedepth) logging.debug(util.classy_print(AudioFile, "Success!")) if self.duration == 0: warnings.warn("Caution: You have opened an empty sound file!")