Source code for espnet2.fileio.npy_scp

from pathlib import Path
from typing import Union

import numpy as np
from typeguard import check_argument_types

from espnet2.fileio.read_text import read_2columns_text

[docs]class NpyScpWriter: """Writer class for a scp file of numpy file. Examples: key1 /some/path/a.npy key2 /some/path/b.npy key3 /some/path/c.npy key4 /some/path/d.npy ... >>> writer = NpyScpWriter('./data/', './data/feat.scp') >>> writer['aa'] = numpy_array >>> writer['bb'] = numpy_array """ def __init__(self, outdir: Union[Path, str], scpfile: Union[Path, str]): assert check_argument_types() self.dir = Path(outdir) self.dir.mkdir(parents=True, exist_ok=True) scpfile = Path(scpfile) scpfile.parent.mkdir(parents=True, exist_ok=True) self.fscp ="w", encoding="utf-8") = {}
[docs] def get_path(self, key): return[key]
def __setitem__(self, key, value): assert isinstance(value, np.ndarray), type(value) p = self.dir / f"{key}.npy" p.parent.mkdir(parents=True, exist_ok=True), value) self.fscp.write(f"{key} {p}\n") # Store the file path[key] = str(p) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.close()
[docs] def close(self): self.fscp.close()
[docs]class NpyScpReader( """Reader class for a scp file of numpy file. Examples: key1 /some/path/a.npy key2 /some/path/b.npy key3 /some/path/c.npy key4 /some/path/d.npy ... >>> reader = NpyScpReader('npy.scp') >>> array = reader['key1'] """ def __init__(self, fname: Union[Path, str]): assert check_argument_types() self.fname = Path(fname) = read_2columns_text(fname)
[docs] def get_path(self, key): return[key]
def __getitem__(self, key) -> np.ndarray: p =[key] return np.load(p) def __contains__(self, item): return item def __len__(self): return len( def __iter__(self): return iter(
[docs] def keys(self): return