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use crate::device::DeviceHandle; use crate::error::{Error, Result}; use uvc_sys::*; #[derive(Copy, Clone, Debug)] pub enum ScanningMode { Interlaced, Progressive, } #[derive(Copy, Clone, Debug)] pub enum AutoExposureMode { Manual, Auto, ShutterPriority, AperturePriority, } #[derive(Copy, Clone, Debug)] pub enum AutoExposurePriority { Constant, Variable, } impl<'a> DeviceHandle<'a> { pub fn scanning_mode(&self) -> Result<ScanningMode> { unsafe { let mut mode = std::mem::MaybeUninit::uninit(); let err = uvc_get_scanning_mode( self.devh.as_ptr(), mode.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err != Error::Success { return Err(err); } match mode.assume_init() { 0 => Ok(ScanningMode::Interlaced), 1 => Ok(ScanningMode::Progressive), _ => Err(Error::Other), } } } pub fn ae_mode(&self) -> Result<AutoExposureMode> { unsafe { let mut mode = std::mem::MaybeUninit::uninit(); let err = uvc_get_ae_mode( self.devh.as_ptr(), mode.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err != Error::Success { return Err(err); } match mode.assume_init() { 1 => Ok(AutoExposureMode::Manual), 2 => Ok(AutoExposureMode::Auto), 4 => Ok(AutoExposureMode::ShutterPriority), 8 => Ok(AutoExposureMode::AperturePriority), _ => Err(Error::Other), } } } pub fn ae_priority(&self) -> Result<AutoExposurePriority> { unsafe { let mut priority = std::mem::MaybeUninit::uninit(); let err = uvc_get_ae_priority( self.devh.as_ptr(), priority.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err != Error::Success { return Err(err); } match priority.assume_init() { 0 => Ok(AutoExposurePriority::Constant), 1 => Ok(AutoExposurePriority::Variable), _ => Err(Error::Other), } } } pub fn exposure_abs(&self) -> Result<u32> { unsafe { let mut time = std::mem::MaybeUninit::uninit(); let err = uvc_get_exposure_abs( self.devh.as_ptr(), time.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err == Error::Success { Ok(time.assume_init()) } else { Err(err) } } } pub fn exposure_rel(&self) -> Result<i8> { unsafe { let mut step = std::mem::MaybeUninit::uninit(); let err = uvc_get_exposure_rel( self.devh.as_ptr(), step.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err == Error::Success { Ok(step.assume_init()) } else { Err(err) } } } pub fn focus_abs(&self) -> Result<u16> { unsafe { let mut focus = std::mem::MaybeUninit::uninit(); let err = uvc_get_focus_abs( self.devh.as_ptr(), focus.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err == Error::Success { Ok(focus.assume_init()) } else { Err(err) } } } pub fn focus_rel(&self) -> Result<(i8, u8)> { unsafe { let mut focus_rel = std::mem::MaybeUninit::uninit(); let mut speed = std::mem::MaybeUninit::uninit(); let err = uvc_get_focus_rel( self.devh.as_ptr(), focus_rel.as_mut_ptr(), speed.as_mut_ptr(), uvc_req_code_UVC_GET_CUR, ) .into(); if err == Error::Success { Ok((focus_rel.assume_init(), speed.assume_init())) } else { Err(err) } } } }