GstVulkanOperation

A GstVulkanOperation abstract a queue operation for images adding automatically semaphores and barriers. It uses Synchronization2 extension if available. Also it enables a VkQueryPool if it's possible and it's requested.

GstVulkanEncodeQueryResult

Encoder query result. Expected to be used in gst_vulkan_operation_get_query

Members

offset (guint32) –

buffer offset

data_size (guint32) –

data size

status (guint32) –

status

Since : 1.26

GstVulkan.VulkanEncodeQueryResult

Encoder query result. Expected to be used in GstVulkan.VulkanOperation.prototype.get_query

Members

offset (Number) –

buffer offset

data_size (Number) –

data size

status (Number) –

status

Since : 1.26

GstVulkan.VulkanEncodeQueryResult

Encoder query result. Expected to be used in GstVulkan.VulkanOperation.get_query

Members

offset (int) –

buffer offset

data_size (int) –

data size

status (int) –

status

Since : 1.26

GstVulkanOperation 

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstVulkanOperation

When using the operation cmd_buf, you should lock it using gst_vulkan_command_buffer_lock, but you have to unlock it, with gst_vulkan_command_buffer_unlock, when calling any of GstVulkanOperation methods.

Members

parent (GstObject) –

the parent GstObject

cmd_buf (GstVulkanCommandBuffer *) –

the current GstVulkanCommandBuffer

Since : 1.24

Class structure

GstVulkanOperationClass

Fields
parent_class (GstObjectClass) –
No description available

GstVulkan.VulkanOperationClass

Attributes
parent_class (Gst.ObjectClass) –
No description available

GstVulkan.VulkanOperationClass

Attributes
parent_class (Gst.ObjectClass) –
No description available

GstVulkan.VulkanOperation 

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──GstVulkan.VulkanOperation

When using the operation cmd_buf, you should lock it using gst_vulkan_command_buffer_lock (not introspectable), but you have to unlock it, with gst_vulkan_command_buffer_unlock (not introspectable), when calling any of GstVulkan.VulkanOperation methods.

Members

parent (Gst.Object) –

the parent Gst.Object

the current GstVulkan.VulkanCommandBuffer

Since : 1.24

GstVulkan.VulkanOperation 

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──GstVulkan.VulkanOperation

When using the operation cmd_buf, you should lock it using gst_vulkan_command_buffer_lock (not introspectable), but you have to unlock it, with gst_vulkan_command_buffer_unlock (not introspectable), when calling any of GstVulkan.VulkanOperation methods.

Members

parent (Gst.Object) –

the parent Gst.Object

the current GstVulkan.VulkanCommandBuffer

Since : 1.24

Constructors

gst_vulkan_operation_new 

GstVulkanOperation *
gst_vulkan_operation_new (GstVulkanCommandPool * cmd_pool)

Parameters:

cmd_pool –

a GstVulkanCommandPool

Returns ( [transfer: full]) –

a newly allocated GstVulkanOperation

GstVulkan.VulkanOperation.prototype.new 

function GstVulkan.VulkanOperation.prototype.new(cmd_pool: GstVulkan.VulkanCommandPool): {
    // javascript wrapper for 'gst_vulkan_operation_new'
}

Parameters:

a GstVulkan.VulkanCommandPool

a newly allocated GstVulkan.VulkanOperation

GstVulkan.VulkanOperation.new 

def GstVulkan.VulkanOperation.new (cmd_pool):
    #python wrapper for 'gst_vulkan_operation_new'

Parameters:

a GstVulkan.VulkanCommandPool

a newly allocated GstVulkan.VulkanOperation

Methods

gst_vulkan_operation_add_dependency_frame 

gboolean
gst_vulkan_operation_add_dependency_frame (GstVulkanOperation * self,
                                           GstBuffer * frame,
                                           guint64 wait_stage,
                                           guint64 signal_stage)

Add frame as an operation dependency by adding the timeline semaphores in each memory of frame into either the wait semaphore array. The signal array hold the same semaphores but increasing their current value.

Parameters:

self –

a GstVulkanOperation

frame –

a Vulkan Image GstBuffer

wait_stage –

pipeline stage to wait (VkPipelineStageFlags or VkPipelineStageFlags2)

signal_stage –

pipeline stage to signal (VkPipelineStageFlags or VkPipelineStageFlags2)

Returns –

whether the frame was added as dependency.

GstVulkan.VulkanOperation.prototype.add_dependency_frame 

function GstVulkan.VulkanOperation.prototype.add_dependency_frame(frame: Gst.Buffer, wait_stage: Number, signal_stage: Number): {
    // javascript wrapper for 'gst_vulkan_operation_add_dependency_frame'
}

Add frame as an operation dependency by adding the timeline semaphores in each memory of frame into either the wait semaphore array. The signal array hold the same semaphores but increasing their current value.

Parameters:

a GstVulkan.VulkanOperation

frame (Gst.Buffer) –

a Vulkan Image Gst.Buffer

wait_stage (Number) –

pipeline stage to wait (VkPipelineStageFlags or VkPipelineStageFlags2)

signal_stage (Number) –

pipeline stage to signal (VkPipelineStageFlags or VkPipelineStageFlags2)

Returns (Number) –

whether the frame was added as dependency.

GstVulkan.VulkanOperation.add_dependency_frame 

def GstVulkan.VulkanOperation.add_dependency_frame (self, frame, wait_stage, signal_stage):
    #python wrapper for 'gst_vulkan_operation_add_dependency_frame'

Add frame as an operation dependency by adding the timeline semaphores in each memory of frame into either the wait semaphore array. The signal array hold the same semaphores but increasing their current value.

Parameters:

a GstVulkan.VulkanOperation

frame (Gst.Buffer) –

a Vulkan Image Gst.Buffer

wait_stage (int) –

pipeline stage to wait (VkPipelineStageFlags or VkPipelineStageFlags2)

signal_stage (int) –

pipeline stage to signal (VkPipelineStageFlags or VkPipelineStageFlags2)

Returns (bool) –

whether the frame was added as dependency.

gst_vulkan_operation_add_extra_image_barriers 

gst_vulkan_operation_add_extra_image_barriers (GstVulkanOperation * self,
                                               GArray * extra_barriers)

See also: gst_vulkan_operation_use_sync2, gst_vulkan_operation_new_extra_image_barriers and gst_vulkan_operation_update_frame

Any non-repeated image barrier in extra is appended to the internal barrier list.

Remember to call gst_vulkan_operation_update_frame on those frames with images in extra_barriers.

Parameters:

self –

a GstVulkanOperation

extra_barriers –

a GArray of extra image memory barriers to handle

gst_vulkan_operation_add_frame_barrier 

gboolean
gst_vulkan_operation_add_frame_barrier (GstVulkanOperation * self,
                                        GstBuffer * frame,
                                        guint64 dst_stage,
                                        guint64 new_access,
                                        VkImageLayout new_layout,
                                        GstVulkanQueue * new_queue)

See also: gst_vulkan_operation_update_frame

Adds an image memory barrier per memory in frame with its future state. And it updates the frame barrier state by calling internally gst_vulkan_operation_update_frame.

Parameters:

self –

a GstVulkanOperation

frame –

a Vulkan Image GstBuffer

dst_stage –

destination pipeline stage (VkPipelineStageFlags or VkPipelineStageFlags2)

new_access –

the new access flags (VkAccessFlags2 or VkAccessFlags)

new_layout –

the new VkImageLayout

new_queue ( [nullable]) –

destination GstVulkanQueue for a transfer of frame ownership

Returns –

whether the frame barriers were appended

GstVulkan.VulkanOperation.prototype.add_frame_barrier 

function GstVulkan.VulkanOperation.prototype.add_frame_barrier(frame: Gst.Buffer, dst_stage: Number, new_access: Number, new_layout: Vulkan.ImageLayout, new_queue: GstVulkan.VulkanQueue): {
    // javascript wrapper for 'gst_vulkan_operation_add_frame_barrier'
}

See also: GstVulkan.VulkanOperation.prototype.update_frame

Adds an image memory barrier per memory in frame with its future state. And it updates the frame barrier state by calling internally GstVulkan.VulkanOperation.prototype.update_frame.

Parameters:

a GstVulkan.VulkanOperation

frame (Gst.Buffer) –

a Vulkan Image Gst.Buffer

dst_stage (Number) –

destination pipeline stage (VkPipelineStageFlags or VkPipelineStageFlags2)

new_access (Number) –

the new access flags (VkAccessFlags2 or VkAccessFlags)

new_layout (Vulkan.ImageLayout) –

the new VkImageLayout

new_queue (GstVulkan.VulkanQueue) –

destination GstVulkan.VulkanQueue for a transfer of frame ownership

Returns (Number) –

whether the frame barriers were appended

GstVulkan.VulkanOperation.add_frame_barrier 

def GstVulkan.VulkanOperation.add_frame_barrier (self, frame, dst_stage, new_access, new_layout, new_queue):
    #python wrapper for 'gst_vulkan_operation_add_frame_barrier'

See also: GstVulkan.VulkanOperation.update_frame

Adds an image memory barrier per memory in frame with its future state. And it updates the frame barrier state by calling internally GstVulkan.VulkanOperation.update_frame.

Parameters:

a GstVulkan.VulkanOperation

frame (Gst.Buffer) –

a Vulkan Image Gst.Buffer

dst_stage (int) –

destination pipeline stage (VkPipelineStageFlags or VkPipelineStageFlags2)

new_access (int) –

the new access flags (VkAccessFlags2 or VkAccessFlags)

new_layout (Vulkan.ImageLayout) –

the new VkImageLayout

new_queue (GstVulkan.VulkanQueue) –

destination GstVulkan.VulkanQueue for a transfer of frame ownership

Returns (bool) –

whether the frame barriers were appended

gst_vulkan_operation_begin 

gboolean
gst_vulkan_operation_begin (GstVulkanOperation * self,
                            GError ** error)

See also: gst_vulkan_operation_end and gst_vulkan_operation_reset

Attempts to set the operation ready to work. It instantiates the common command buffer in self and calls vkBeginCommandBuffer.

After calling this function you can register commands in the command buffer, and finally call gst_vulkan_operation_end. gst_vulkan_operation_reset is called internally if something failed.

Parameters:

self –

a GstVulkanOperation

error –

a GError

Returns –

whether the operation started. It might fill error.

GstVulkan.VulkanOperation.prototype.begin 

function GstVulkan.VulkanOperation.prototype.begin(): {
    // javascript wrapper for 'gst_vulkan_operation_begin'
}

See also: GstVulkan.VulkanOperation.prototype.end and GstVulkan.VulkanOperation.prototype.reset

Attempts to set the operation ready to work. It instantiates the common command buffer in self and calls vkBeginCommandBuffer.

After calling this function you can register commands in the command buffer, and finally call GstVulkan.VulkanOperation.prototype.end. GstVulkan.VulkanOperation.prototype.reset is called internally if something failed.

Parameters:

a GstVulkan.VulkanOperation

Returns (Number) –

whether the operation started. It might fill error.

GstVulkan.VulkanOperation.begin 

@raises(GLib.GError)
def GstVulkan.VulkanOperation.begin (self):
    #python wrapper for 'gst_vulkan_operation_begin'

See also: GstVulkan.VulkanOperation.end and GstVulkan.VulkanOperation.reset

Attempts to set the operation ready to work. It instantiates the common command buffer in self and calls vkBeginCommandBuffer.

After calling this function you can register commands in the command buffer, and finally call GstVulkan.VulkanOperation.end. GstVulkan.VulkanOperation.reset is called internally if something failed.

Parameters:

a GstVulkan.VulkanOperation

Returns (bool) –

whether the operation started. It might fill error.

gst_vulkan_operation_begin_query 

gboolean
gst_vulkan_operation_begin_query (GstVulkanOperation * self,
                                  guint32 id)

Begins a query operation in the current command buffer.

Parameters:

self –

a GstVulkanOperation

id –
No description available
Returns –

whether the begin command was set

GstVulkan.VulkanOperation.prototype.begin_query 

function GstVulkan.VulkanOperation.prototype.begin_query(id: Number): {
    // javascript wrapper for 'gst_vulkan_operation_begin_query'
}

Begins a query operation in the current command buffer.

Parameters:

a GstVulkan.VulkanOperation

id (Number) –
No description available
Returns (Number) –

whether the begin command was set

GstVulkan.VulkanOperation.begin_query 

def GstVulkan.VulkanOperation.begin_query (self, id):
    #python wrapper for 'gst_vulkan_operation_begin_query'

Begins a query operation in the current command buffer.

Parameters:

a GstVulkan.VulkanOperation

id (int) –
No description available
Returns (bool) –

whether the begin command was set

gst_vulkan_operation_discard_dependencies 

gst_vulkan_operation_discard_dependencies (GstVulkanOperation * self)

Discards barriers, and all the semaphore arrays populated by gst_vulkan_operation_add_dependency_frame.

Parameters:

self –

a GstVulkanOperation

GstVulkan.VulkanOperation.prototype.discard_dependencies 

function GstVulkan.VulkanOperation.prototype.discard_dependencies(): {
    // javascript wrapper for 'gst_vulkan_operation_discard_dependencies'
}

Discards barriers, and all the semaphore arrays populated by GstVulkan.VulkanOperation.prototype.add_dependency_frame.

Parameters:

a GstVulkan.VulkanOperation

GstVulkan.VulkanOperation.discard_dependencies 

def GstVulkan.VulkanOperation.discard_dependencies (self):
    #python wrapper for 'gst_vulkan_operation_discard_dependencies'

Discards barriers, and all the semaphore arrays populated by GstVulkan.VulkanOperation.add_dependency_frame.

Parameters:

a GstVulkan.VulkanOperation

gst_vulkan_operation_enable_query 

gboolean
gst_vulkan_operation_enable_query (GstVulkanOperation * self,
                                   VkQueryType query_type,
                                   guint n_queries,
                                   gpointer pnext,
                                   GError ** error)

Tries to enable the query pool for the current operation.

Parameters:

self –

a GstVulkanOperation

query_type ( [typeguint32]) –

the VkQueryType to enable

n_queries –

number of queries to enable

pnext –

the structure pointer to use as pNext

error –

a GError

Returns –

whether the query pool was enabled. It might populate error in case of error.

Since : 1.24

GstVulkan.VulkanOperation.prototype.enable_query 

function GstVulkan.VulkanOperation.prototype.enable_query(query_type: Number, n_queries: Number, pnext: Object): {
    // javascript wrapper for 'gst_vulkan_operation_enable_query'
}

Tries to enable the query pool for the current operation.

Parameters:

a GstVulkan.VulkanOperation

query_type (Number) –

the VkQueryType to enable

n_queries (Number) –

number of queries to enable

pnext (Object) –

the structure pointer to use as pNext

Returns (Number) –

whether the query pool was enabled. It might populate error in case of error.

Since : 1.24

GstVulkan.VulkanOperation.enable_query 

@raises(GLib.GError)
def GstVulkan.VulkanOperation.enable_query (self, query_type, n_queries, pnext):
    #python wrapper for 'gst_vulkan_operation_enable_query'

Tries to enable the query pool for the current operation.

Parameters:

a GstVulkan.VulkanOperation

query_type (int) –

the VkQueryType to enable

n_queries (int) –

number of queries to enable

pnext (object) –

the structure pointer to use as pNext

Returns (bool) –

whether the query pool was enabled. It might populate error in case of error.

Since : 1.24

gst_vulkan_operation_end 

gboolean
gst_vulkan_operation_end (GstVulkanOperation * self,
                          GError ** error)

See also: gst_vulkan_operation_begin and gst_vulkan_operation_reset

It calls vkEndCommandBuffer, and later either vkQueueSubmit or vkQueueSubmit2KHR filling up the semaphores from images declared as dependencies.

You have called gst_vulkan_operation_begin before. gst_vulkan_operation_reset is called internally if something fails

Parameters:

self –

a GstVulkanOperation

error –

a GError

Returns –

whether the operation failed. It might fill error.

GstVulkan.VulkanOperation.prototype.end 

function GstVulkan.VulkanOperation.prototype.end(): {
    // javascript wrapper for 'gst_vulkan_operation_end'
}

See also: GstVulkan.VulkanOperation.prototype.begin and GstVulkan.VulkanOperation.prototype.reset

It calls vkEndCommandBuffer, and later either vkQueueSubmit or vkQueueSubmit2KHR filling up the semaphores from images declared as dependencies.

You have called GstVulkan.VulkanOperation.prototype.begin before. GstVulkan.VulkanOperation.prototype.reset is called internally if something fails

Parameters:

a GstVulkan.VulkanOperation

Returns (Number) –

whether the operation failed. It might fill error.

GstVulkan.VulkanOperation.end 

@raises(GLib.GError)
def GstVulkan.VulkanOperation.end (self):
    #python wrapper for 'gst_vulkan_operation_end'

See also: GstVulkan.VulkanOperation.begin and GstVulkan.VulkanOperation.reset

It calls vkEndCommandBuffer, and later either vkQueueSubmit or vkQueueSubmit2KHR filling up the semaphores from images declared as dependencies.

You have called GstVulkan.VulkanOperation.begin before. GstVulkan.VulkanOperation.reset is called internally if something fails

Parameters:

a GstVulkan.VulkanOperation

Returns (bool) –

whether the operation failed. It might fill error.

gst_vulkan_operation_end_query 

gboolean
gst_vulkan_operation_end_query (GstVulkanOperation * self,
                                guint32 id)

Ends a query operation in the current command buffer.

Parameters:

self –

a GstVulkanOperation

id –
No description available
Returns –

whether the end command was set

GstVulkan.VulkanOperation.prototype.end_query 

function GstVulkan.VulkanOperation.prototype.end_query(id: Number): {
    // javascript wrapper for 'gst_vulkan_operation_end_query'
}

Ends a query operation in the current command buffer.

Parameters:

a GstVulkan.VulkanOperation

id (Number) –
No description available
Returns (Number) –

whether the end command was set

GstVulkan.VulkanOperation.end_query 

def GstVulkan.VulkanOperation.end_query (self, id):
    #python wrapper for 'gst_vulkan_operation_end_query'

Ends a query operation in the current command buffer.

Parameters:

a GstVulkan.VulkanOperation

id (int) –
No description available
Returns (bool) –

whether the end command was set

gst_vulkan_operation_get_query 

gboolean
gst_vulkan_operation_get_query (GstVulkanOperation * self,
                                gpointer * data,
                                GError ** error)

Gets the latest operation results of all the queries in data. API users have to parse the binary array of data according of their needs (usually is a guint32 array of size of n_query).

Don't free data.

Parameters:

self –

a GstVulkanOperation

data ( [out][transfer: none]) –

result of all queries

error –

a GError

Returns –

whether a status was fetched. If not, it might populate error

GstVulkan.VulkanOperation.prototype.get_query 

function GstVulkan.VulkanOperation.prototype.get_query(): {
    // javascript wrapper for 'gst_vulkan_operation_get_query'
}

Gets the latest operation results of all the queries in data. API users have to parse the binary array of data according of their needs (usually is a guint32 array of size of n_query).

Don't free data.

Parameters:

a GstVulkan.VulkanOperation

Returns a tuple made of:

(Number ) –

whether a status was fetched. If not, it might populate error

data (Object ) –

whether a status was fetched. If not, it might populate error

GstVulkan.VulkanOperation.get_query 

@raises(GLib.GError)
def GstVulkan.VulkanOperation.get_query (self):
    #python wrapper for 'gst_vulkan_operation_get_query'

Gets the latest operation results of all the queries in data. API users have to parse the binary array of data according of their needs (usually is a guint32 array of size of n_query).

Don't free data.

Parameters:

a GstVulkan.VulkanOperation

Returns a tuple made of:

(bool ) –

whether a status was fetched. If not, it might populate error

data (object ) –

whether a status was fetched. If not, it might populate error

gst_vulkan_operation_new_extra_image_barriers 

GArray *
gst_vulkan_operation_new_extra_image_barriers (GstVulkanOperation * self)

See also: gst_vulkan_operation_use_sync2, gst_vulkan_operation_add_extra_image_barriers and gst_vulkan_operation_update_frame

If it's required to add custom image memory barriers this function will allocate a new array to append in it the extra image memory barriers to handle.

Remember to call gst_vulkan_operation_update_frame after adding the barrier related with that frame.

Parameters:

self –

a GstVulkanOperation

Returns ( [transfer: full]) –

A new allocated array of barriers, either VkImageMemoryBarrier or VkImageMemoryBarrier2KHR, depending whether synchronization2 extension is used.

gst_vulkan_operation_pipeline_barrier2 

gboolean
gst_vulkan_operation_pipeline_barrier2 (GstVulkanOperation * self,
                                        gpointer dependency_info)

It's a wrapper to vkCmdPipelineBarrier2{KHR} if it's available.

Parameters:

self –

a GstVulkanOperation

dependency_info –

a pointer to VkDependencyInfo

Returns –

TRUE if vkCmdPipelineBarrier2{KHR} it's available. FALSE, otherwise.

GstVulkan.VulkanOperation.prototype.pipeline_barrier2 

function GstVulkan.VulkanOperation.prototype.pipeline_barrier2(dependency_info: Object): {
    // javascript wrapper for 'gst_vulkan_operation_pipeline_barrier2'
}

It's a wrapper to vkCmdPipelineBarrier2{KHR} if it's available.

Parameters:

a GstVulkan.VulkanOperation

dependency_info (Object) –

a pointer to VkDependencyInfo

Returns (Number) –

true if vkCmdPipelineBarrier2{KHR} it's available. false, otherwise.

GstVulkan.VulkanOperation.pipeline_barrier2 

def GstVulkan.VulkanOperation.pipeline_barrier2 (self, dependency_info):
    #python wrapper for 'gst_vulkan_operation_pipeline_barrier2'

It's a wrapper to vkCmdPipelineBarrier2{KHR} if it's available.

Parameters:

a GstVulkan.VulkanOperation

dependency_info (object) –

a pointer to VkDependencyInfo

Returns (bool) –

True if vkCmdPipelineBarrier2{KHR} it's available. False, otherwise.

gst_vulkan_operation_reset 

gst_vulkan_operation_reset (GstVulkanOperation * self)

Resets the operation to a clean state.

Parameters:

self –

a GstVulkanOperation

GstVulkan.VulkanOperation.prototype.reset 

function GstVulkan.VulkanOperation.prototype.reset(): {
    // javascript wrapper for 'gst_vulkan_operation_reset'
}

Resets the operation to a clean state.

Parameters:

a GstVulkan.VulkanOperation

GstVulkan.VulkanOperation.reset 

def GstVulkan.VulkanOperation.reset (self):
    #python wrapper for 'gst_vulkan_operation_reset'

Resets the operation to a clean state.

Parameters:

a GstVulkan.VulkanOperation

gst_vulkan_operation_retrieve_image_barriers 

GArray *
gst_vulkan_operation_retrieve_image_barriers (GstVulkanOperation * self)

Retrieves a copy of the current defined barriers internally, which will be used by vkCmdPipelineBarrier or vkCmdPipelineBarrier2KHR by the API user.

The element type of the array might be, depending on if synchronization2 extension is used, either VkImageMemoryBarrier or VkImageMemoryBarrier2KHR.

Parameters:

self –

a GstVulkanOperation

Returns ( [transfer: full]) –

Current barriers array. Call g_array_unref after the operation is using.

gst_vulkan_operation_update_frame 

gst_vulkan_operation_update_frame (GstVulkanOperation * self,
                                   GstBuffer * frame,
                                   guint64 dst_stage,
                                   guint64 new_access,
                                   VkImageLayout new_layout,
                                   GstVulkanQueue * new_queue)

Add or update the internal list of the future state of frame. This state will be set after gst_vulkan_operation_end.

This method is useful when new barriers are added to the array without using gst_vulkan_operation_add_frame_barrier.

Parameters:

self –

a GstVulkanOperation

frame –

a GstBuffer to update after submit

dst_stage –

destination pipeline stage (VkPipelineStageFlags or VkPipelineStageFlags2)

new_access –

the new access flags (VkAccessFlags2 or VkAccessFlags)

new_layout –

the new VkImageLayout

new_queue ( [nullable]) –

destination GstVulkanQueue for a transfer of frame ownership

GstVulkan.VulkanOperation.prototype.update_frame 

function GstVulkan.VulkanOperation.prototype.update_frame(frame: Gst.Buffer, dst_stage: Number, new_access: Number, new_layout: Vulkan.ImageLayout, new_queue: GstVulkan.VulkanQueue): {
    // javascript wrapper for 'gst_vulkan_operation_update_frame'
}

Add or update the internal list of the future state of frame. This state will be set after GstVulkan.VulkanOperation.prototype.end.

This method is useful when new barriers are added to the array without using GstVulkan.VulkanOperation.prototype.add_frame_barrier.

Parameters:

a GstVulkan.VulkanOperation

frame (Gst.Buffer) –

a Gst.Buffer to update after submit

dst_stage (Number) –

destination pipeline stage (VkPipelineStageFlags or VkPipelineStageFlags2)

new_access (Number) –

the new access flags (VkAccessFlags2 or VkAccessFlags)

new_layout (Vulkan.ImageLayout) –

the new VkImageLayout

new_queue (GstVulkan.VulkanQueue) –

destination GstVulkan.VulkanQueue for a transfer of frame ownership

GstVulkan.VulkanOperation.update_frame 

def GstVulkan.VulkanOperation.update_frame (self, frame, dst_stage, new_access, new_layout, new_queue):
    #python wrapper for 'gst_vulkan_operation_update_frame'

Add or update the internal list of the future state of frame. This state will be set after GstVulkan.VulkanOperation.end.

This method is useful when new barriers are added to the array without using GstVulkan.VulkanOperation.add_frame_barrier.

Parameters:

a GstVulkan.VulkanOperation

frame (Gst.Buffer) –

a Gst.Buffer to update after submit

dst_stage (int) –

destination pipeline stage (VkPipelineStageFlags or VkPipelineStageFlags2)

new_access (int) –

the new access flags (VkAccessFlags2 or VkAccessFlags)

new_layout (Vulkan.ImageLayout) –

the new VkImageLayout

new_queue (GstVulkan.VulkanQueue) –

destination GstVulkan.VulkanQueue for a transfer of frame ownership

gst_vulkan_operation_use_sync2 

gboolean
gst_vulkan_operation_use_sync2 (GstVulkanOperation * self)

Parameters:

self –

a GstVulkanOperation

Returns –

whether the operations are using synchronization2 extension.

GstVulkan.VulkanOperation.prototype.use_sync2 

function GstVulkan.VulkanOperation.prototype.use_sync2(): {
    // javascript wrapper for 'gst_vulkan_operation_use_sync2'
}

Parameters:

a GstVulkan.VulkanOperation

Returns (Number) –

whether the operations are using synchronization2 extension.

GstVulkan.VulkanOperation.use_sync2 

def GstVulkan.VulkanOperation.use_sync2 (self):
    #python wrapper for 'gst_vulkan_operation_use_sync2'

Parameters:

a GstVulkan.VulkanOperation

Returns (bool) –

whether the operations are using synchronization2 extension.

gst_vulkan_operation_wait 

gboolean
gst_vulkan_operation_wait (GstVulkanOperation * self)

Waits for the operation's fence to signal.

Parameters:

self –

a GstVulkanOperation

Returns –

whether the operation succeed.

GstVulkan.VulkanOperation.prototype.wait 

function GstVulkan.VulkanOperation.prototype.wait(): {
    // javascript wrapper for 'gst_vulkan_operation_wait'
}

Waits for the operation's fence to signal.

Parameters:

a GstVulkan.VulkanOperation

Returns (Number) –

whether the operation succeed.

GstVulkan.VulkanOperation.wait 

def GstVulkan.VulkanOperation.wait (self):
    #python wrapper for 'gst_vulkan_operation_wait'

Waits for the operation's fence to signal.

Parameters:

a GstVulkan.VulkanOperation

Returns (bool) –

whether the operation succeed.

Properties

command-pool 

“command-pool” GstVulkanCommandPool *

Flags : Read / Write / Construct Only

command-pool 

“command-pool” GstVulkan.VulkanCommandPool

Flags : Read / Write / Construct Only

command_pool 

“self.props.command_pool” GstVulkan.VulkanCommandPool

Flags : Read / Write / Construct Only

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