Struct gbm::BufferObject

pub struct BufferObject<'a, T: 'static> { /* fields omitted */ }

A gbm buffer object

Methods

impl<'a, T: 'static> BufferObject<'a, T>

fn width(&self) -> u32

Get the width of the buffer object

fn height(&self) -> u32

Get the height of the buffer object

fn stride(&self) -> u32

Get the stride of the buffer object

fn format(&self) -> Format

Get the format of the buffer object

fn handle(&self) -> BufferObjectHandle

Get the handle of the buffer object

This is stored in the platform generic union BufferObjectHandle type. However the format of this handle is platform specific.

fn map(
    &'a self,
    x: u32,
    y: u32,
    width: u32,
    height: u32
) -> IoResult<MappedBufferObject<'a, T>>

Map a region of a gbm buffer object for cpu access

This function maps a region of a gbm bo for cpu read access.

fn map_mut(
    &'a mut self,
    x: u32,
    y: u32,
    width: u32,
    height: u32
) -> IoResult<MappedBufferObjectRW<'a, T>>

Map a region of a gbm buffer object for cpu access

This function maps a region of a gbm bo for cpu read/write access.

fn write(&mut self, buffer: &[u8]) -> IoResult<()>

Write data into the buffer object

If the buffer object was created with the BufferObjectFlags::Write flag, this function can be used to write data into the buffer object. The data is copied directly into the object and it's the responsibility of the caller to make sure the data represents valid pixel data, according to the width, height, stride and format of the buffer object.

fn set_userdata(&mut self, userdata: T) -> Option<T>

Sets the userdata of the buffer object.

If previously userdata was set, it is returned.

fn clear_userdata(&mut self)

Clears the set userdata of the buffer object.

fn userdata(&self) -> Option<&T>

Returns a reference to set userdata, if any.

fn userdata_mut(&mut self) -> Option<&mut T>

Returns a mutable reference to set userdata, if any.

fn take_userdata(&mut self) -> Option<T>

Takes ownership of previously set userdata, if any.

This removes the userdata from the buffer object.

Trait Implementations

impl<'a, T: 'static> AsRawFd for BufferObject<'a, T>

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl<'a, T: 'static> AsRaw<gbm_bo> for BufferObject<'a, T>

fn as_raw(&self) -> *const gbm_bo

Receive a raw pointer representing this type.

impl<'a, T: 'static> FromRaw<gbm_bo> for BufferObject<'a, T>

unsafe fn from_raw(ffi: *mut gbm_bo) -> Self

Create a new instance of this type from a raw pointer.

impl<'a, T: 'static> Drop for BufferObject<'a, T>

fn drop(&mut self)

Executes the destructor for this type.

impl<'a, T: 'static> DrmBuffer for BufferObject<'a, T>

fn size(&self) -> (u32, u32)

The width and height of the buffer.

fn format(&self) -> DrmPixelFormat

The format of the buffer.

fn pitch(&self) -> u32

The pitch of the buffer.

fn handle(&self) -> DrmId

The GEM handle of the buffer.