结构体 AVOptionRange 

#[repr(C)]
pub struct AVOptionRange {
    pub str_: *const c_char,
    pub value_min: f64,
    pub value_max: f64,
    pub component_min: f64,
    pub component_max: f64,
    pub is_range: c_int,
}

A single allowed range of values, or a single allowed value.

Fields

str_: *const c_char

value_min: f64

Value range. For string ranges this represents the min/max length. For dimensions this represents the min/max pixel count or width/height in multi-component case.

value_max: f64

Value range. For string ranges this represents the min/max length. For dimensions this represents the min/max pixel count or width/height in multi-component case.

component_min: f64

Value’s component range. For string this represents the unicode range for chars, 0-127 limits to ASCII.

component_max: f64

Value’s component range. For string this represents the unicode range for chars, 0-127 limits to ASCII.

is_range: c_int

Range flag. If set to 1 the struct encodes a range, if set to 0 a single value.

trait 实现

impl Clone for AVOptionRange

fn clone(&self) -> AVOptionRange

Returns a duplicate of the value. 阅读更多

fn clone_from(&mut self, source: &Self)

从 source 执行拷贝赋值。 阅读更多

impl Debug for AVOptionRange

fn fmt(&self, f: &mut Formatter<'_>) -> Result

使用给定的格式化器格式化该值。 阅读更多

impl PartialEq for AVOptionRange

fn eq(&self, other: &AVOptionRange) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

测试 !=。默认实现几乎总是足够的，没有充分理由不应被重写。

impl Copy for AVOptionRange

impl StructuralPartialEq for AVOptionRange