Struct VulkanQueueLock 

pub struct VulkanQueueLock { /* private fields */ }

Serializes one shared Vulkan queue family across FFmpeg and the renderer.

The bridge installs its own recursive queue locks on the device context, so this handle takes the same lock FFmpeg takes around its own submissions. It is only made over a context create_vulkan_device_context set up: any other has no such lock, and one of another device type keeps other data where the shim keeps its locks.

Implementations

impl VulkanQueueLock

pub fn new( device: AVHWDeviceContext, queue_family: u32, ) -> Result<Self, BridgeError>

Locks submissions to queue_family on device.

Errors

Returns an input error unless device is a context create_vulkan_device_context initialized and queue_family is one it keeps a lock for. Locking anything else would serialize nothing.

pub fn lock(&self) -> VulkanQueueGuard<'_>

Holds the shared queue lock until the returned guard drops, on this thread: the lock is a mutex its owning thread has to release.

pub unsafe fn raw_lock(&self)

Acquires the shared queue lock without a guard, for an adapter to a lock/unlock protocol of its own.

Safety

The calling thread must release it with exactly one Self::raw_unlock, in the reverse order of every other hold it takes on this lock.

pub unsafe fn raw_unlock(&self)

Releases a hold taken by Self::raw_lock.

Safety

The calling thread must hold the lock from a Self::raw_lock not yet released, and this must be the most recent hold it took. A mutex another thread holds cannot be released, and an unbalanced release lets two submissions reach the queue at once.

Trait Implementations

impl Debug for VulkanQueueLock

Available on Linux and crate feature hwdevice only.

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

Formats the value using the given formatter.

impl Sync for VulkanQueueLock

Available on Linux and crate feature hwdevice only.