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use bitflags::bitflags;
use std::{fmt, mem};
use crate::fraction::Fraction;
use crate::v4l_sys::*;
bitflags! {
pub struct Capabilities: u32 {
#[allow(clippy::unreadable_literal)]
const TIME_PER_FRAME = 0x1000;
}
}
impl From<u32> for Capabilities {
fn from(caps: u32) -> Self {
Capabilities::from_bits_truncate(caps)
}
}
impl Into<u32> for Capabilities {
fn into(self) -> u32 {
self.bits()
}
}
impl fmt::Display for Capabilities {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(self, f)
}
}
bitflags! {
pub struct Modes: u32 {
const HIGH_QUALITY = 0x1000;
}
}
impl From<u32> for Modes {
fn from(caps: u32) -> Self {
Modes::from_bits_truncate(caps)
}
}
impl Into<u32> for Modes {
fn into(self) -> u32 {
self.bits()
}
}
impl fmt::Display for Modes {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(self, f)
}
}
#[derive(Debug, Copy, Clone)]
pub struct Parameters {
pub capabilities: Capabilities,
pub modes: Modes,
pub interval: Fraction,
}
impl Parameters {
pub fn new(frac: Fraction) -> Self {
Parameters {
capabilities: Capabilities::from(0),
modes: Modes::from(0),
interval: frac,
}
}
pub fn with_fps(fps: u32) -> Self {
Parameters {
capabilities: Capabilities::from(0),
modes: Modes::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, "modes : {}", self.modes)?;
writeln!(f, "interval : {} [s]", self.interval)?;
Ok(())
}
}
impl From<v4l2_captureparm> for Parameters {
fn from(params: v4l2_captureparm) -> Self {
Parameters {
capabilities: Capabilities::from(params.capability),
modes: Modes::from(params.capturemode),
interval: Fraction::from(params.timeperframe),
}
}
}
impl Into<v4l2_captureparm> for Parameters {
fn into(self: Parameters) -> v4l2_captureparm {
let mut params: v4l2_captureparm;
unsafe {
params = mem::zeroed();
}
params.capability = self.capabilities.into();
params.capturemode = self.modes.into();
params.timeperframe = self.interval.into();
params
}
}