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from __future__ import annotations
from typing import TYPE_CHECKING
import numpy as np
if TYPE_CHECKING:
from collections.abc import Callable
from fractions import Fraction
from numpy.typing import NDArray
BoolList = NDArray[np.bool_]
BoolOperand = Callable[[BoolList, BoolList], BoolList]
def boolop(a: BoolList, b: BoolList, call: BoolOperand) -> BoolList:
if len(a) > len(b):
k = np.copy(b)
k.resize(len(a))
b = k
if len(b) > len(a):
k = np.copy(a)
k.resize(len(b))
a = k
return call(a, b)
def to_timecode(secs: float | Fraction, fmt: str) -> str:
sign = ""
if secs < 0:
sign = "-"
secs = -secs
_m, _s = divmod(secs, 60)
_h, _m = divmod(_m, 60)
s, m, h = float(_s), int(_m), int(_h)
if fmt == "webvtt":
if h == 0:
return f"{sign}{m:02d}:{s:06.3f}"
return f"{sign}{h:02d}:{m:02d}:{s:06.3f}"
if fmt in {"srt", "mov_text"}:
return f"{sign}{h:02d}:{m:02d}:" + f"{s:06.3f}".replace(".", ",", 1)
if fmt == "standard":
return f"{sign}{h:02d}:{m:02d}:{s:06.3f}"
if fmt == "ass":
return f"{sign}{h:d}:{m:02d}:{s:05.2f}"
if fmt == "rass":
return f"{sign}{h:d}:{m:02d}:{s:02.0f}"
raise ValueError("to_timecode: Unreachable")
def mut_margin(arr: BoolList, start_m: int, end_m: int) -> None:
# Find start and end indexes
start_index = []
end_index = []
arrlen = len(arr)
for j in range(1, arrlen):
if arr[j] != arr[j - 1]:
if arr[j]:
start_index.append(j)
else:
end_index.append(j)
# Apply margin
if start_m > 0:
for i in start_index:
arr[max(i - start_m, 0) : i] = True
if start_m < 0:
for i in start_index:
arr[i : min(i - start_m, arrlen)] = False
if end_m > 0:
for i in end_index:
arr[i : min(i + end_m, arrlen)] = True
if end_m < 0:
for i in end_index:
arr[max(i + end_m, 0) : i] = False
def get_stdout(cmd: list[str]) -> str:
from subprocess import DEVNULL, PIPE, Popen
stdout = Popen(cmd, stdin=DEVNULL, stdout=PIPE, stderr=PIPE).communicate()[0]
return stdout.decode("utf-8", "replace")
def get_stdout_bytes(cmd: list[str]) -> bytes:
from subprocess import DEVNULL, PIPE, Popen
return Popen(cmd, stdin=DEVNULL, stdout=PIPE, stderr=PIPE).communicate()[0]
def aspect_ratio(width: int, height: int) -> tuple[int, int]:
if height == 0:
return (0, 0)
def gcd(a: int, b: int) -> int:
while b:
a, b = b, a % b
return a
c = gcd(width, height)
return width // c, height // c
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