Struct v4l::io::mmap::arena::Arena

pub struct Arena<'a> {
    handle: Arc<Handle>,
    pub bufs: Vec<&'a mut [u8]>,
    pub buf_type: Type,
}

Manage mapped buffers

All buffers are unmapped in the Drop impl. In case of errors during unmapping, we panic because there is memory corruption going on.

Fields

handle: Arc<Handle>

bufs: Vec<&'a mut [u8]>

buf_type: Type

Implementations

impl<'a> Arena<'a>

pub fn new(handle: Arc<Handle>, buf_type: Type) -> Self

Returns a new buffer manager instance

You usually do not need to use this directly. A MappedBufferStream creates its own manager instance by default.

Arguments

• handle - Device handle to get its file descriptor
• buf_type - Type of the buffers

fn buffer_desc(&self) -> v4l2_buffer

fn requestbuffers_desc(&self) -> v4l2_requestbuffers

pub fn allocate(&mut self, count: u32) -> Result<u32>

pub fn release(&mut self) -> Result<()>

Trait Implementations

impl<'a> Drop for Arena<'a>

fn drop(&mut self)

Executes the destructor for this type.