[−][src]Trait v4l::video::traits::Capture

pub trait Capture {
    pub fn enum_frameintervals(
        &self, 
        fourcc: FourCC, 
        width: u32, 
        height: u32
    ) -> Result<Vec<FrameInterval>>;
    pub fn enum_framesizes(&self, fourcc: FourCC) -> Result<Vec<FrameSize>>;
    pub fn enum_formats(&self) -> Result<Vec<FormatDescription>>;
    pub fn format(&self) -> Result<Format>;
    pub fn set_format(&self, fmt: &Format) -> Result<Format>;
    pub fn params(&self) -> Result<CaptureParameters>;
    pub fn set_params(
        &self, 
        params: &CaptureParameters
    ) -> Result<CaptureParameters>;
}

Capture device protocol

Required methods

`pub fn enum_frameintervals( &self, fourcc: FourCC, width: u32, height: u32 ) -> Result<Vec<FrameInterval>>`[src]

Returns a vector of all frame intervals that the device supports for the given pixel format and frame size

`pub fn enum_framesizes(&self, fourcc: FourCC) -> Result<Vec<FrameSize>>`[src]

Returns a vector of valid framesizes that the device supports for the given pixel format

`pub fn enum_formats(&self) -> Result<Vec<FormatDescription>>`[src]

Returns a vector of valid formats for this device

The "emulated" field describes formats filled in by libv4lconvert. There may be a conversion related performance penalty when using them.

`pub fn format(&self) -> Result<Format>`[src]

Returns the format currently in use

`pub fn set_format(&self, fmt: &Format) -> Result<Format>`[src]

Modifies the capture format and returns the actual format

The driver tries to match the format parameters on a best effort basis. Thus, if the combination of format properties cannot be achieved, the closest possible settings are used and reported back.