Enum cognitive_qualia::surface::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 of Shm

source: MemoryView
time_stamp: Instant

EglImage

EGL image stored in graphic card memory.

Fields of EglImage

source: EglAttributes
time_stamp: Instant

Dmabuf

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

Fields of Dmabuf

source: DmabufAttributes
time_stamp: Instant

None

Source unspecified.

Methods

impl DataSource

fn new_shm(buffer: MemoryView) -> Self

Constructs new shared memory DataSource.

fn new_egl_image(attrs: EglAttributes) -> Self

Constructs new EGL image DataSource.

fn new_dmabuf(attrs: DmabufAttributes) -> Self

Constructs new dmabuf DataSource.

fn is_none(&self) -> bool

Returns true if data source is unspecified, false otherwise.

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

Returns data as Image if available.

Trait Implementations

impl Clone for DataSource

fn clone(&self) -> DataSource

Returns a copy of the value.

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

Performs copy-assignment from source.