GstVulkan.VulkanQueue

Subclasses:

None

Methods

Inherited:

Gst.Object (27), GObject.Object (37)

Structs:

GObject.ObjectClass (5)

class	flags_to_string (queue_bits)
class	handle_context_query (element, query, queue)
class	run_context_query (element, queue)
	create_command_pool ()
	create_decoder (codec)
	get_device ()
	submit_lock ()
	submit_unlock ()

Virtual Methods

Inherited:

Gst.Object (1), GObject.Object (7)

Properties

Inherited:

Gst.Object (2)

Signals

Inherited:

Gst.Object (1), GObject.Object (1)

Fields

Inherited:

Gst.Object (1), GObject.Object (1)

Name	Type	Access	Description
device	GstVulkan.VulkanDevice	r	the GstVulkan.VulkanDevice this queue was allocated from
family	int	r	the vulkan queue family
index	int	r	the vulkan queue index
parent	Gst.Object	r	the parent Gst.Object
queue	Vulkan.Queue	r	the vulkan queue handle

Class Details

class GstVulkan.VulkanQueue(**kwargs)

Bases:

Gst.Object

Abstract:

No

Structure:

GstVulkan.VulkanQueueClass

New in version 1.18.

classmethod flags_to_string(queue_bits)

Parameters:

queue_bits (Vulkan.QueueFlags) –

Return type:

str

New in version 1.18.

classmethod handle_context_query(element, query, queue)

Parameters:

• element (Gst.Element) – a Gst.Element

• query (Gst.Query) – a Gst.Query of type Gst.QueryType.CONTEXT

• queue (GstVulkan.VulkanQueue or None) – the GstVulkan.VulkanQueue

Returns:

whether query was responded to with queue

Return type:

bool

If a GstVulkan.VulkanQueue is requested in query, sets queue as the reply.

Intended for use with element query handlers to respond to Gst.QueryType.CONTEXT for a GstVulkan.VulkanQueue.

New in version 1.18.

classmethod run_context_query(element, queue)

Parameters:

• element (Gst.Element) – a Gst.Element

• queue (GstVulkan.VulkanQueue) – a GstVulkan.VulkanQueue

Returns:

whether queue contains a valid GstVulkan.VulkanQueue

queue:

a GstVulkan.VulkanQueue

Return type:

(bool, queue: GstVulkan.VulkanQueue)

Attempt to retrieve a GstVulkan.VulkanQueue using Gst.QueryType.CONTEXT from the surrounding elements of element.

New in version 1.18.

create_command_pool()

Raises:

GLib.Error

Returns:

a new GstVulkan.VulkanCommandPool or None

Return type:

GstVulkan.VulkanCommandPool

New in version 1.18.

create_decoder(codec)

Parameters:

codec (int) – the VkVideoCodecOperationFlagBitsKHR to decode

Returns:

the GstVulkan.VulkanDecoder object

Return type:

GstVulkan.VulkanDecoder or None

Creates a GstVulkan.VulkanDecoder object if codec decoding is supported by self

New in version 1.24.

get_device()

Returns:

the GstVulkan.VulkanDevice for self

Return type:

GstVulkan.VulkanDevice or None

New in version 1.18.

submit_lock()

Locks the queue for command submission using vkQueueSubmit() to meet the Vulkan requirements for externally synchronised resources.

New in version 1.18.

submit_unlock()

Unlocks the queue for command submission using vkQueueSubmit().

See GstVulkan.VulkanQueue.submit_lock() for details on when this call is needed.

New in version 1.18.