generic ¶

def apply(self, clip: VideoNodeT) -> VideoNodeT:
    """Applies the property to the VideoNode."""

    return vs.core.std.SetFrameProp(clip, self.prop_key, self.value)

@classmethod
def ensure_presence(cls, clip: VideoNodeT, value: int | Self | None, func: FuncExceptT | None = None) -> VideoNodeT:
    """Ensure the presence of the property in the VideoNode."""

    enum_value = cls.from_param_or_video(value, clip, True, func)

    return vs.core.std.SetFrameProp(clip, enum_value.prop_key, enum_value.value)

@staticmethod
def ensure_presences(
    clip: VideoNodeT, prop_enums: Iterable[type[PropEnumT] | PropEnumT], func: FuncExceptT | None = None
) -> VideoNodeT:
    """Ensure the presence of multiple PropEnums at once."""

    return vs.core.std.SetFrameProps(
        clip,
        **{
            value.prop_key: value.value
            for value in [
                cls if isinstance(cls, PropEnum) else cls.from_video(clip, True, func) for cls in prop_enums
            ]
        },
    )

@classmethod
def from_param(cls, value: Any, func_except: Any = None) -> Self | None:
    """
    Determine the ChromaLocation through a parameter.

    :param value:           Value or ChromaLocation object.
    :param func_except:     Function returned for custom error handling.
                            This should only be set by VS package developers.

    :return:                ChromaLocation object or None.
    """

@classmethod
def from_param_or_video(
    cls,
    value: int | ChromaLocation | ChromaLocationT | None,
    src: vs.VideoNode | vs.VideoFrame | vs.FrameProps,
    strict: bool = False,
    func_except: FuncExceptT | None = None,
) -> ChromaLocation: ...

@classmethod
def from_res(cls, frame: vs.VideoNode | vs.VideoFrame) -> ChromaLocation:
    """
    Guess the chroma location based on the clip's resolution.

    :param frame:       Input clip or frame.

    :return:            ChromaLocation object.
    """

    return ChromaLocation.LEFT

@classmethod
def from_video(
    cls, src: vs.VideoNode | vs.VideoFrame | vs.FrameProps, strict: bool = False, func: FuncExceptT | None = None
) -> ChromaLocation:
    """
    Obtain the chroma location of a clip from the frame properties.

    :param src:                             Input clip, frame, or props.
    :param strict:                          Be strict about the properties.
                                            The result may NOT be an unknown value.

    :return:                                ChromaLocation object.

    :raises UndefinedChromaLocationError:   Chroma location is undefined.
    :raises UndefinedChromaLocationError:   Chroma location can not be determined from the frame properties.
    """

    return _base_from_video(cls, src, UndefinedChromaLocationError, strict, func)

def get_offsets(self, src: int | VideoFormatT | HoldsVideoFormatT) -> tuple[float, float]:
    """
    Get (left,top) shift for chroma relative to luma.

    This is only useful if you MUST use a pre-specified chroma location and shift the chroma yourself.
    """
    from ..utils import get_video_format

    fmt = get_video_format(src)

    off_left = off_top = 0.0

    if self in {ChromaLocation.LEFT, ChromaLocation.TOP_LEFT, ChromaLocation.BOTTOM_LEFT}:
        off_left = 0.5 - 2 ** (fmt.subsampling_w - 1)

    if self in {ChromaLocation.TOP, ChromaLocation.TOP_LEFT}:
        off_top = 0.5 - 2 ** (fmt.subsampling_h - 1)
    elif self in {ChromaLocation.BOTTOM, ChromaLocation.BOTTOM_LEFT}:
        off_top = 2 ** (fmt.subsampling_h - 1) - 0.5

    return off_left, off_top

@classmethod
def is_unknown(cls, value: int | Self) -> bool:
    """Whether the value represents an unknown value."""

    return False

@classmethod
def is_valid(cls, value: int) -> bool:
    """Check if the given value is a valid int value of this enum."""
    return int(value) in map(int, cls.__members__.values())

@classproperty
@classmethod
def prop_key(cls) -> str:
    """The key used in props to store the enum."""

    return f"_{cls.__name__}"

def apply(self, clip: VideoNodeT) -> VideoNodeT:
    """Applies the property to the VideoNode."""

    return vs.core.std.SetFrameProp(clip, self.prop_key, self.value)

@classmethod
def ensure_presence(
    cls, clip: VideoNodeT, tff: int | FieldBasedT | bool | None, func: FuncExceptT | None = None
) -> VideoNodeT:
    field_based = cls.from_param_or_video(tff, clip, True, func)

    return vs.core.std.SetFieldBased(clip, field_based.value)

@staticmethod
def ensure_presences(
    clip: VideoNodeT, prop_enums: Iterable[type[PropEnumT] | PropEnumT], func: FuncExceptT | None = None
) -> VideoNodeT:
    """Ensure the presence of multiple PropEnums at once."""

    return vs.core.std.SetFrameProps(
        clip,
        **{
            value.prop_key: value.value
            for value in [
                cls if isinstance(cls, PropEnum) else cls.from_video(clip, True, func) for cls in prop_enums
            ]
        },
    )

@classmethod
def from_param(cls: Any, value_or_tff: Any, func_except: Any = None) -> FieldBased | None:
    if isinstance(value_or_tff, bool):
        return FieldBased(1 + value_or_tff)

    return super().from_param(value_or_tff)

@classmethod
def from_param_or_video(
    cls,
    value: Any,
    src: vs.VideoNode | vs.VideoFrame | vs.FrameProps,
    strict: bool = False,
    func_except: FuncExceptT | None = None,
) -> Self:
    """
    Get the enum member from a value that can be casted to this prop value
    or grab it from frame properties.

    If `strict=False`, gather the heuristics using the clip's size or format.

    :param value:           Value to cast.
    :param src:             Clip to get prop from.
    :param strict:          Be strict about the frame properties. Default: False.
    :param func_except:     Function returned for custom error handling.
    """
    value = cls.from_param(value, func_except)

    if value is not None:
        return value

    return cls.from_video(src, strict, func_except)

@classmethod
def from_res(cls, frame: vs.VideoNode | vs.VideoFrame) -> FieldBased:
    """Guess the Field order from the frame resolution."""

    return cls.PROGRESSIVE

@classmethod
def from_video(
    cls, src: vs.VideoNode | vs.VideoFrame | vs.FrameProps, strict: bool = False, func: FuncExceptT | None = None
) -> FieldBased:
    """
    Obtain the Field order of a clip from the frame properties.

    :param src:                             Input clip, frame, or props.
    :param strict:                          Be strict about the properties.
                                            Will ALWAYS error if the FieldBased is missing.

    :return:                                FieldBased object.

    :raises UndefinedFieldBasedError:       Field order is undefined.
    :raises UndefinedFieldBasedError:       Field order can not be determined from the frame properties.
    """

    return _base_from_video(cls, src, UndefinedFieldBasedError, strict, func)

@classmethod
def is_unknown(cls, value: int | Self) -> bool:
    """Whether the value represents an unknown value."""

    return False

@classmethod
def is_valid(cls, value: int) -> bool:
    """Check if the given value is a valid int value of this enum."""
    return int(value) in map(int, cls.__members__.values())

@classproperty
@classmethod
def prop_key(cls) -> str:
    """The key used in props to store the enum."""

    return f"_{cls.__name__}"