from typing import Any, Optional, Tuple

AdpcmState = Tuple[int, int]
RatecvState = Tuple[int, Tuple[Tuple[int, int], ...]]

class error(Exception): ...

def add(fragment1: bytes, fragment2: bytes, width: int) -> bytes: ...
def adpcm2lin(adpcmfragment: bytes, width: int, state: Optional[AdpcmState]) -> Tuple[bytes, AdpcmState]: ...
def alaw2lin(fragment: bytes, width: int) -> bytes: ...
def avg(fragment: bytes, width: int) -> int: ...
def avgpp(fragment: bytes, width: int) -> int: ...
def bias(fragment: bytes, width: int, bias: int) -> bytes: ...
def byteswap(fragment: bytes, width: int) -> bytes: ...
def cross(fragment: bytes, width: int) -> int: ...
def findfactor(fragment: bytes, reference: bytes) -> float: ...
def findfit(fragment: bytes, reference: bytes) -> Tuple[int, float]: ...
def findmax(fragment: bytes, length: int) -> int: ...
def getsample(fragment: bytes, width: int, index: int) -> int: ...
def lin2adpcm(fragment: bytes, width: int, state: Optional[AdpcmState]) -> Tuple[bytes, AdpcmState]: ...
def lin2alaw(fragment: bytes, width: int) -> bytes: ...
def lin2lin(fragment: bytes, width: int, newwidth: int) -> bytes: ...
def lin2ulaw(fragment: bytes, width: int) -> bytes: ...
def max(fragment: bytes, width: int) -> int: ...
def maxpp(fragment: bytes, width: int) -> int: ...
def minmax(fragment: bytes, width: int) -> Tuple[int, int]: ...
def mul(fragment: bytes, width: int, factor: float) -> bytes: ...
def ratecv(
    fragment: bytes,
    width: int,
    nchannels: int,
    inrate: int,
    outrate: int,
    state: Optional[RatecvState],
    weightA: int = ...,
    weightB: int = ...,
) -> Tuple[bytes, RatecvState]: ...
def reverse(fragment: bytes, width: int) -> bytes: ...
def rms(fragment: bytes, width: int) -> int: ...
def tomono(fragment: bytes, width: int, lfactor: float, rfactor: float) -> bytes: ...
def tostereo(fragment: bytes, width: int, lfactor: float, rfactor: float) -> bytes: ...
def ulaw2lin(fragment: bytes, width: int) -> bytes: ...