moq-v4l 0.1.0

Safe Video4Linux 2 bindings, forked from raymanfx/libv4l-rs with the kernel bindings checked in (no bindgen, no libclang)
Documentation 
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use std::{fmt, mem};

use crate::fraction::Fraction;
use crate::parameters::Capabilities;
use crate::sys::*;

#[derive(Debug, Copy, Clone)]
/// Output parameters (single-planar)
pub struct Parameters {
	pub capabilities: Capabilities,
	pub interval: Fraction,
}

impl Parameters {
	pub fn new(frac: Fraction) -> Self {
		Parameters {
			capabilities: Capabilities::from(0),
			interval: frac,
		}
	}

	pub fn with_fps(fps: u32) -> Self {
		Parameters {
			capabilities: Capabilities::from(0),
			interval: Fraction::new(1, fps),
		}
	}
}

impl fmt::Display for Parameters {
	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
		writeln!(f, "capabilities : {}", self.capabilities)?;
		writeln!(f, "interval     : {} [s]", self.interval)?;
		Ok(())
	}
}

impl From<v4l2_outputparm> for Parameters {
	fn from(params: v4l2_outputparm) -> Self {
		Self {
			capabilities: Capabilities::from(params.capability),
			interval: Fraction::from(params.timeperframe),
		}
	}
}

impl From<Parameters> for v4l2_outputparm {
	fn from(parameters: Parameters) -> Self {
		Self {
			capability: parameters.capabilities.into(),
			timeperframe: parameters.interval.into(),
			..unsafe { mem::zeroed() }
		}
	}
}