55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
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import os
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from typing import BinaryIO, Optional, Tuple, Union
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import torch
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from torchaudio.io import CodecConfig
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from . import soundfile_backend
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from .backend import Backend
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from .common import AudioMetaData
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class SoundfileBackend(Backend):
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@staticmethod
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def info(uri: Union[BinaryIO, str, os.PathLike], format: Optional[str], buffer_size: int = 4096) -> AudioMetaData:
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return soundfile_backend.info(uri, format)
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@staticmethod
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def load(
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uri: Union[BinaryIO, str, os.PathLike],
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frame_offset: int = 0,
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num_frames: int = -1,
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normalize: bool = True,
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channels_first: bool = True,
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format: Optional[str] = None,
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buffer_size: int = 4096,
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) -> Tuple[torch.Tensor, int]:
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return soundfile_backend.load(uri, frame_offset, num_frames, normalize, channels_first, format)
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@staticmethod
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def save(
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uri: Union[BinaryIO, str, os.PathLike],
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src: torch.Tensor,
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sample_rate: int,
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channels_first: bool = True,
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format: Optional[str] = None,
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encoding: Optional[str] = None,
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bits_per_sample: Optional[int] = None,
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buffer_size: int = 4096,
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compression: Optional[Union[CodecConfig, float, int]] = None,
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) -> None:
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if compression:
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raise ValueError("soundfile backend does not support argument `compression`.")
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soundfile_backend.save(
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uri, src, sample_rate, channels_first, format=format, encoding=encoding, bits_per_sample=bits_per_sample
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)
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@staticmethod
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def can_decode(uri, format) -> bool:
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return True
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@staticmethod
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def can_encode(uri, format) -> bool:
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return True
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