# Copyright (c) 2025 Zhendong Peng (pzd17@tsinghua.org.cn)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from enum import Enum
from typing import Dict, Tuple, Union

import av
import numpy as np


class BaseEnum(Enum):
    def __new__(cls, value):
        obj = object.__new__(cls)
        obj._value_ = value
        return obj

    def __getattr__(self, attr):
        return getattr(self.value, attr)


class AudioFormatEnum(BaseEnum):
    pass


class AudioLayoutEnum(BaseEnum):
    pass


class CodecEnum(BaseEnum):
    pass


class ContainerFormatEnum(BaseEnum):
    pass


UINT32_MAX = np.iinfo(np.uint32).max
AudioFormat = Union[str, av.AudioFormat]
AudioFrame = Union[np.ndarray, av.AudioFrame, Tuple[np.ndarray, int]]
AudioLayout = Union[int, str, av.AudioLayout]
Codec = Union[str, av.Codec]
ContainerFormat = Union[str, av.ContainerFormat]
Dtype = Union[str, type, np.dtype]
Filter = Union[str, Tuple[str, str], Tuple[str, Dict[str, str]], Tuple[str, str, Dict[str, str]]]
Seconds = float