Struct gstreamer_allocators::DRMDumbAllocator

pub struct DRMDumbAllocator { /* private fields */ }

Private intance object for DRMDumbAllocator.

Properties

drm-device-path

Readable | Writeable | Construct Only

drm-fd

Readable | Writeable | Construct Only

Object

name

Readable | Writeable | Construct

parent

The parent of the object. Please note, that when changing the ‘parent’ property, we don’t emit GObject::notify and GstObject::deep-notify signals due to locking issues. In some cases one can use GstBin::element-added or GstBin::element-removed signals on the parent to achieve a similar effect.

Readable | Writeable

Implements

gst::prelude::AllocatorExt

GLib type: GObject with reference counted clone semantics.

Implementations

impl DRMDumbAllocator

pub fn with_device_path( drm_device_path: impl AsRef<Path>, ) -> Result<DRMDumbAllocator, BoolError>

Creates a new DRMDumbAllocator for the specific device path. This function can fail if the path does not exist, is not a DRM device or if the DRM device doesnot support DUMB allocation.

drm_device_path

path to the DRM device to open

Returns

a new DRM Dumb allocator. Use gst_object_unref() to release the allocator after usage.

pub fn has_prime_export(&self) -> bool

This function allow verifying if the driver support dma-buf exportation.

Returns

true if the allocator support exporting dma-buf.

pub fn drm_device_path(&self) -> Option<PathBuf>

pub fn drm_fd(&self) -> i32

impl DRMDumbAllocator

pub fn with_fd<A: IntoRawFd>(drm_fd: A) -> Result<DRMDumbAllocator, BoolError>

Creates a new DRMDumbAllocator for the specific file desciptor. This function can fail if the file descriptor is not a DRM device or if the DRM device does not support DUMB allocation.

drm_fd

file descriptor of the DRM device

Returns

a new DRM Dumb allocator. Use gst_object_unref() to release the allocator after usage.

pub unsafe fn alloc( &self, drm_fourcc: u32, width: u32, height: u32, ) -> Result<(Memory, u32), BoolError>

Allocated a DRM buffer object for the specific drm_fourcc, width and height. Note that the DRM Dumb allocation interface is agnostic to the pixel format. This drm_fourcc is converted into a bpp (bit-per-pixel) number and the height is scaled according to the sub-sampling.

drm_fourcc

the DRM format to allocate for

width

padded width for this allocation

height

padded height for this allocation

Returns

a new DRM Dumb gst::Memory. Use gst_memory_unref() to release the memory after usage.

out_pitch

the pitch as returned by the driver

Trait Implementations

impl Clone for DRMDumbAllocator

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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

Performs copy-assignment from source.

impl Debug for DRMDumbAllocator

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

Formats the value using the given formatter.

impl HasParamSpec for DRMDumbAllocator

type ParamSpec = ParamSpecObject

type SetValue = DRMDumbAllocator

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, DRMDumbAllocator>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for DRMDumbAllocator

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DRMDumbAllocator

fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl ParentClassIs for DRMDumbAllocator

type Parent = Allocator

impl<OT: ObjectType> PartialEq<OT> for DRMDumbAllocator

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

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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

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

impl<OT: ObjectType> PartialOrd<OT> for DRMDumbAllocator

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for DRMDumbAllocator

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for DRMDumbAllocator

impl IsA<Allocator> for DRMDumbAllocator

impl Send for DRMDumbAllocator

impl Sync for DRMDumbAllocator