Enum DataSource 

pub enum DataSource {
    Shm {
        source: MemoryView,
        time_stamp: Instant,
    },
    EglImage {
        source: EglAttributes,
        time_stamp: Instant,
    },
    Dmabuf {
        source: DmabufAttributes,
        time_stamp: Instant,
    },
    None,
}

This enum gathers information about source of data to be used when drawing surface.

Must be easy to copy and ensure data is not destroyed during use.

Variants

Shm

View on shared memory pool or buffer.

Fields

source: MemoryView

time_stamp: Instant

EglImage

EGL image stored in graphic card memory.

Fields

source: EglAttributes

time_stamp: Instant

Dmabuf

Image stored in some graphic device (webcam, GPU, etc…).

Fields

source: DmabufAttributes

time_stamp: Instant

None

Source unspecified.

Implementations

impl DataSource

pub fn new_shm(buffer: MemoryView) -> Self

Constructs new shared memory DataSource.

pub fn new_egl_image(attrs: EglAttributes) -> Self

Constructs new EGL image DataSource.

pub fn new_dmabuf(attrs: DmabufAttributes) -> Self

Constructs new dmabuf DataSource.

pub fn is_none(&self) -> bool

Returns true if data source is unspecified, false otherwise.

pub fn as_image(&self) -> Option<&dyn Image>

Returns data as Image if available.

Trait Implementations

impl Clone for DataSource

fn clone(&self) -> DataSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.