GstVulkan.VulkanMemory

Fields

Name	Type	Access	Description
alloc_info	Vulkan.MemoryAllocateInfo	r
device	GstVulkan.VulkanDevice	r/w	the GstVulkan.VulkanDevice this memory is allocated from
lock	GLib.Mutex	r/w	lock for accessing/changing memory informat
map_count	int	r/w	number of times this memory is mapped
mapping	object	r/w	internal pointer to already mapped memory
mem	Gst.Memory	r/w	the parent Gst.Memory
mem_ptr	Vulkan.DeviceMemory	r/w	the vulkan memory handle
notify	GLib.DestroyNotify	r
properties	Vulkan.MemoryPropertyFlags	r
user_data	object	r
vk_offset	int	r
wrapped	bool	r

Methods

class	alloc (device, memory_type_index, params, size, mem_prop_flags)
class	find_memory_type_index_with_requirements (device, req, properties)
class	heap_flags_to_string (prop_bits)
class	init_once ()
class	property_flags_to_string (prop_bits)

Details

class GstVulkan.VulkanMemory

New in version 1.18.

classmethod alloc(device, memory_type_index, params, size, mem_prop_flags)

Parameters:

• device (GstVulkan.VulkanDevice) – a GstVulkan.VulkanDevice

• memory_type_index (int) – the Vulkan memory type index

• params (Gst.AllocationParams) – a Gst.AllocationParams

• size (int) – the size to allocate

• mem_prop_flags (Vulkan.MemoryPropertyFlags) –

Returns:

a Gst.Memory object backed by a vulkan device memory

Return type:

Gst.Memory

Allocated a new GstVulkan.VulkanMemory.

New in version 1.18.

classmethod find_memory_type_index_with_requirements(device, req, properties)

Parameters:

• device (GstVulkan.VulkanDevice) – a GstVulkan.VulkanDevice

• req (Vulkan.MemoryRequirements) – memory requirements to look for

• properties (Vulkan.MemoryPropertyFlags) – memory properties to search for

Returns:

whether a valid memory type could be found

type_index:

resulting index of the memory type

Return type:

(bool, type_index: int)

New in version 1.24.

classmethod heap_flags_to_string(prop_bits)

Parameters:

prop_bits (Vulkan.MemoryHeapFlags) –

Return type:

str

New in version 1.18.

classmethod init_once()

Initializes the Vulkan memory allocator. It is safe to call this function multiple times. This must be called before any other GstVulkan.VulkanMemory operation.

New in version 1.18.

classmethod property_flags_to_string(prop_bits)

Parameters:

prop_bits (Vulkan.MemoryPropertyFlags) –

Return type:

str

New in version 1.18.