Struct RingFormat 

pub struct RingFormat {
    pub width: u32,
    pub height: u32,
    pub fourcc: u32,
    pub fps_num: u32,
    pub fps_den: u32,
    pub bytesperline: u32,
    pub sizeimage: u32,
}

Geometry of the advertised device: a fixed-function camera with one format.

Fields

width: u32

height: u32

fourcc: u32

fps_num: u32

fps_den: u32

bytesperline: u32

Bytes per line of the first plane; 0 for compressed formats.

sizeimage: u32

Maximum bytes of one frame, also the slot size.

Implementations

impl RingFormat

pub fn raw( fourcc_code: u32, width: u32, height: u32, fps_num: u32, fps_den: u32, ) -> Option<Self>

Build the format for a raw fourcc at width x height; None for an unknown fourcc.

pub fn compressed( fourcc_code: u32, width: u32, height: u32, fps_num: u32, fps_den: u32, ) -> Option<Self>

Build the format for the compressed fourcc (MJPEG): no stride, and a frame budget of two bytes per pixel, what UVC cameras advertise for MJPEG and far above what a browser’s JPEG of a camera picture takes.

pub fn for_fourcc( fourcc_code: u32, width: u32, height: u32, fps_num: u32, fps_den: u32, ) -> Option<Self>

Raw or compressed, by fourcc.

Trait Implementations

impl Clone for RingFormat

fn clone(&self) -> RingFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RingFormat

impl Debug for RingFormat

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

Formats the value using the given formatter.

impl Eq for RingFormat

impl PartialEq for RingFormat

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

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

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for RingFormat