exprop ¶

def __call__(
    self, *clips: VideoNodeIterable, planes: PlanesT = None,
    format: HoldsVideoFormatT | VideoFormatT | None = None, opt: bool | None = None,
    boundary: bool = True, force_akarin: Literal[False] | FuncExceptT = False,
    func: FuncExceptT | None = None, split_planes: bool = False, **kwargs: Any
) -> vs.VideoNode:
    from .funcs import norm_expr

    return norm_expr(
        clips, self, planes, format, opt, boundary, force_akarin, func, split_planes, **kwargs  # type: ignore
    )

def __call__(self, *pos_args: Any, **kwargs: Any) -> vs.VideoNode | ExprOpBase:
    args = list[Any](flatten(pos_args))

    if isinstance(args[0], vs.VideoNode):
        return self.combine(*args, **kwargs)

    while True:
        try:
            return ExprOpBase(self.format(*args, **kwargs), 3)
        except KeyError as key:
            try:
                kwargs.update({str(key)[1:-1]: args.pop(0)})
            except IndexError:
                raise key

@classmethod
def clamp(
    cls, min: float | ExprToken = ExprToken.RangeMin, max: float | ExprToken = ExprToken.RangeMax, c: str = ''
) -> ExprList:

    if complexpr_available:
        return ExprList([c, min, max, ExprOp.CLAMP])

    return ExprList([c, min, ExprOp.MAX, max, ExprOp.MIN])

def combine(
    self, *clips: vs.VideoNode | Iterable[vs.VideoNode | Iterable[vs.VideoNode]],
    suffix: StrArrOpt = None, prefix: StrArrOpt = None, expr_suffix: StrArrOpt = None,
    expr_prefix: StrArrOpt = None, planes: PlanesT = None, **expr_kwargs: Any
) -> vs.VideoNode:
    from .funcs import combine

    return combine(clips, self, suffix, prefix, expr_suffix, expr_prefix, planes, **expr_kwargs)

@classmethod
def convolution(
    cls, var: str | ExprVarsT, matrix: Iterable[SupportsFloat] | Iterable[Iterable[SupportsFloat]],
    bias: float | None = None, divisor: float | bool = True, saturate: bool = True,
    mode: ConvMode = ConvMode.HV, premultiply: float | int | None = None,
    multiply: float | int | None = None, clamp: bool = False
) -> TupleExprList:
    convolution = list[float](flatten(matrix))  # type: ignore

    if not (conv_len := len(convolution)) % 2:
        raise CustomValueError('Convolution length must be odd!', cls.convolution, matrix)
    elif conv_len < 3:
        raise CustomValueError('You must pass at least 3 convolution items!', cls.convolution, matrix)
    elif mode == ConvMode.SQUARE and conv_len != isqrt(conv_len) ** 2:
        raise CustomValueError(
            'With square mode, convolution must represent a '
            'horizontal*vertical square (radius*radius n items)!', cls.convolution
        )

    radius = conv_len // 2 if mode != ConvMode.SQUARE else isqrt(conv_len) // 2

    rel_pixels = cls.matrix(var, radius, mode)

    output = TupleExprList([
        ExprList([
            rel_pix if weight == 1 else [rel_pix, weight, ExprOp.MUL]
            for rel_pix, weight in zip(rel_px, convolution)
            if weight != 0
        ]) for rel_px in rel_pixels
    ])

    for out in output:
        out.extend(ExprOp.ADD * out.mlength)

        if premultiply is not None:
            out.append(premultiply, ExprOp.MUL)

        if divisor is not False:
            if divisor is True:
                divisor = sum(map(float, convolution))

            if divisor not in {0, 1}:
                out.append(divisor, ExprOp.DIV)

        if bias is not None:
            out.append(bias, ExprOp.ADD)

        if not saturate:
            out.append(ExprOp.ABS)

        if multiply is not None:
            out.append(multiply, ExprOp.MUL)

        if clamp:
            out.append(ExprOp.clamp(ExprToken.RangeMin, ExprToken.RangeMax))

    return output

@classmethod
def mae(cls, planesa: ExprVarRangeT, planesb: ExprVarRangeT | None = None) -> ExprList:
    planesa, planesb = cls._parse_planes(planesa, planesb, cls.rmse)
    expr = ExprList()

    for a, b in zip(planesa, planesb):
        expr.append([a, b, cls.SUB, cls.ABS])

    expr.append(cls.MAX * expr.mlength)

    return expr

@classmethod
def matrix(
    cls, var: str | ExprVarsT, radius: int, mode: ConvMode, exclude: Iterable[tuple[int, int]] | None = None
) -> TupleExprList:
    exclude = list(exclude) if exclude else list()

    match mode:
        case ConvMode.SQUARE:
            coordinates = [
                (x, y)
                for y in range(-radius, radius + 1)
                for x in range(-radius, radius + 1)
            ]
        case ConvMode.VERTICAL:
            coordinates = [(0, xy) for xy in range(-radius, radius + 1)]
        case ConvMode.HORIZONTAL:
            coordinates = [(xy, 0) for xy in range(-radius, radius + 1)]
        case ConvMode.HV:
            return TupleExprList([
                cls.matrix(var, radius, ConvMode.VERTICAL, exclude)[0],
                cls.matrix(var, radius, ConvMode.HORIZONTAL, exclude)[0],
           ])
        case ConvMode.TEMPORAL:
            if len(var) != radius * 2 + 1:
                raise CustomValueError(
                    "`var` must have a number of elements proportional to the radius",
                    cls.matrix, var
                )

            return TupleExprList([ExprList(v for v in var)])
        case _:
            raise NotImplementedError

    return TupleExprList([ExprList([
        var if x == y == 0 else
        ExprOp.REL_PIX(var, x, y)
        for (x, y) in coordinates
        if (x, y) not in exclude
    ])])

@classmethod
def rmse(cls, planesa: ExprVarRangeT, planesb: ExprVarRangeT | None = None) -> ExprList:
    planesa, planesb = cls._parse_planes(planesa, planesb, cls.rmse)

    expr = ExprList()

    for a, b in zip(planesa, planesb):
        expr.append([a, b, cls.SUB, cls.DUP, cls.MUL, cls.SQRT])

    expr.append(cls.MAX * expr.mlength)

    return expr

def combine(
    self, *clips: vs.VideoNode | Iterable[vs.VideoNode | Iterable[vs.VideoNode]],
    suffix: StrArrOpt = None, prefix: StrArrOpt = None, expr_suffix: StrArrOpt = None,
    expr_prefix: StrArrOpt = None, planes: PlanesT = None, **expr_kwargs: Any
) -> vs.VideoNode:
    from .funcs import combine

    return combine(clips, self, suffix, prefix, expr_suffix, expr_prefix, planes, **expr_kwargs)

def get_value(self, clip: vs.VideoNode, chroma: bool | None = None, range_in: ColorRange | None = None) -> float:
    if self is ExprToken.LumaMin:
        return get_lowest_value(clip, False, ColorRange.LIMITED)

    if self is ExprToken.ChromaMin:
        return get_lowest_value(clip, True, ColorRange.LIMITED)

    if self is ExprToken.LumaMax:
        return get_peak_value(clip, False, ColorRange.LIMITED)

    if self is ExprToken.ChromaMax:
        return get_peak_value(clip, True, ColorRange.LIMITED)

    if self is ExprToken.Neutral:
        return get_neutral_value(clip)

    if self is ExprToken.RangeHalf:
        return ((val := get_peak_value(clip, range_in=ColorRange.FULL)) + (1 - (val <= 1.0))) / 2

    if self is ExprToken.RangeSize:
        return (val := get_peak_value(clip, range_in=ColorRange.FULL)) + (1 - (val <= 1.0))

    if self is ExprToken.RangeMin:
        return get_lowest_value(clip, chroma if chroma is not None else False, ColorRange.FULL)

    if self is ExprToken.LumaRangeMin:
        return get_lowest_value(clip, False)

    if self is ExprToken.ChromaRangeMin:
        return get_lowest_value(clip, True)

    if self is ExprToken.RangeMax:
        return get_peak_value(clip, chroma if chroma is not None else False, ColorRange.FULL)

    if self is ExprToken.LumaRangeMax:
        return get_peak_value(clip, False)

    if self is ExprToken.ChromaRangeMax:
        return get_peak_value(clip, True)

    if self is ExprToken.RangeInMin:
        return get_lowest_value(clip, chroma if chroma is not None else False, range_in)

    if self is ExprToken.LumaRangeInMin:
        return get_lowest_value(clip, False, range_in)

    if self is ExprToken.ChromaRangeInMin:
        return get_lowest_value(clip, True, range_in)

    if self is ExprToken.RangeInMax:
        return get_peak_value(clip, chroma if chroma is not None else False, range_in)

    if self is ExprToken.LumaRangeInMax:
        return get_peak_value(clip, False, range_in)

    if self is ExprToken.ChromaRangeInMax:
        return get_peak_value(clip, True, range_in)

    raise CustomValueError("You are using an unsupported ExprToken!", self.get_value, self)

def __call__(
    self, *clips: VideoNodeIterable, planes: PlanesT = None,
    format: HoldsVideoFormatT | VideoFormatT | None = None, opt: bool | None = None,
    boundary: bool = True, force_akarin: Literal[False] | FuncExceptT = False,
    func: FuncExceptT | None = None, split_planes: bool = False, **kwargs: Any
) -> vs.VideoNode:
    clip: list[vs.VideoNode] | vs.VideoNode = flatten_vnodes(clips)

    for exprlist in self:
        clip = exprlist(
            clip, planes=planes, format=format, opt=opt, boundary=boundary,
            force_akarin=force_akarin, func=func, split_planes=split_planes, **kwargs
        )

    return clip[0] if isinstance(clip, list) else clip