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Source code for torchaudio.utils.sox_utils

"""Module to change the configuration of libsox, which is used by I/O functions like
:py:mod:`~torchaudio.backend.sox_io_backend` and :py:mod:`~torchaudio.sox_effects`.
"""

from typing import Dict, List

import torchaudio

sox_ext = torchaudio._extension.lazy_import_sox_ext()


[docs]def set_seed(seed: int): """Set libsox's PRNG Args: seed (int): seed value. valid range is int32. See Also: http://sox.sourceforge.net/sox.html """ sox_ext.set_seed(seed)
[docs]def set_verbosity(verbosity: int): """Set libsox's verbosity Args: verbosity (int): Set verbosity level of libsox. * ``1`` failure messages * ``2`` warnings * ``3`` details of processing * ``4``-``6`` increasing levels of debug messages See Also: http://sox.sourceforge.net/sox.html """ sox_ext.set_verbosity(verbosity)
[docs]def set_buffer_size(buffer_size: int): """Set buffer size for sox effect chain Args: buffer_size (int): Set the size in bytes of the buffers used for processing audio. See Also: http://sox.sourceforge.net/sox.html """ sox_ext.set_buffer_size(buffer_size)
[docs]def set_use_threads(use_threads: bool): """Set multithread option for sox effect chain Args: use_threads (bool): When ``True``, enables ``libsox``'s parallel effects channels processing. To use mutlithread, the underlying ``libsox`` has to be compiled with OpenMP support. See Also: http://sox.sourceforge.net/sox.html """ sox_ext.set_use_threads(use_threads)
[docs]def list_effects() -> Dict[str, str]: """List the available sox effect names Returns: Dict[str, str]: Mapping from ``effect name`` to ``usage`` """ return dict(sox_ext.list_effects())
[docs]def list_read_formats() -> List[str]: """List the supported audio formats for read Returns: List[str]: List of supported audio formats """ return sox_ext.list_read_formats()
[docs]def list_write_formats() -> List[str]: """List the supported audio formats for write Returns: List[str]: List of supported audio formats """ return sox_ext.list_write_formats()
[docs]def get_buffer_size() -> int: """Get buffer size for sox effect chain Returns: int: size in bytes of buffers used for processing audio. """ return sox_ext.get_buffer_size()

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