VA allocators

There are two types of VA allocators:

VaAllocator

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstAllocator
                ╰──VaAllocator

A pooled memory allocator backed by VASurfaceID.


VaAllocator

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Allocator
                ╰──VaAllocator

A pooled memory allocator backed by VASurfaceID.


VaAllocator

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Allocator
                ╰──VaAllocator

A pooled memory allocator backed by VASurfaceID.


Constructors

gst_va_allocator_new

GstAllocator *
gst_va_allocator_new (GstVaDisplay * display,
                      GArray * surface_formats)

Instanciate a new pooled GstAllocator backed by VASurfaceID.

Parameters:

display

a GstVaDisplay

surface_formats ( [element-typeguint][transfer: full])

a GArray of valid GstVideoFormat for surfaces in current VA context.

Returns

a GstVaDisplay

Since : 1.22


GstVa.VaAllocator.prototype.new

function GstVa.VaAllocator.prototype.new(display: GstVa.VaDisplay, surface_formats: [ Number ]): {
    // javascript wrapper for 'gst_va_allocator_new'
}

Instanciate a new pooled Gst.Allocator backed by VASurfaceID.

Parameters:

surface_formats ([ Number ])

a GLib.Array of valid GstVideo.VideoFormat for surfaces in current VA context.

Returns (Gst.Allocator)

a GstVa.VaDisplay

Since : 1.22


GstVa.VaAllocator.new

def GstVa.VaAllocator.new (display, surface_formats):
    #python wrapper for 'gst_va_allocator_new'

Instanciate a new pooled Gst.Allocator backed by VASurfaceID.

Parameters:

surface_formats ([ int ])

a GLib.Array of valid GstVideo.VideoFormat for surfaces in current VA context.

Returns (Gst.Allocator)

a GstVa.VaDisplay

Since : 1.22


Functions

gst_va_allocator_alloc

GstMemory *
gst_va_allocator_alloc (GstAllocator * allocator)

Allocate a new VASurfaceID backed GstMemory.

Parameters:

allocator

a GstAllocator

Returns

a GstMemory backed with a VASurfaceID; NULL, otherwise.

Since : 1.22


GstVa.VaAllocator.prototype.alloc

function GstVa.VaAllocator.prototype.alloc(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_alloc'
}

Allocate a new VASurfaceID backed Gst.Memory.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns (Gst.Memory)

a Gst.Memory backed with a VASurfaceID; null, otherwise.

Since : 1.22


GstVa.VaAllocator.alloc

def GstVa.VaAllocator.alloc (allocator):
    #python wrapper for 'gst_va_allocator_alloc'

Allocate a new VASurfaceID backed Gst.Memory.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns (Gst.Memory)

a Gst.Memory backed with a VASurfaceID; None, otherwise.

Since : 1.22


gst_va_allocator_flush

gst_va_allocator_flush (GstAllocator * allocator)

Removes all the memories in allocator's pool.

Parameters:

allocator

a GstAllocator

Since : 1.22


GstVa.VaAllocator.prototype.flush

function GstVa.VaAllocator.prototype.flush(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_flush'
}

Removes all the memories in allocator's pool.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Since : 1.22


GstVa.VaAllocator.flush

def GstVa.VaAllocator.flush (allocator):
    #python wrapper for 'gst_va_allocator_flush'

Removes all the memories in allocator's pool.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Since : 1.22


gst_va_allocator_get_format

gboolean
gst_va_allocator_get_format (GstAllocator * allocator,
                             GstVideoInfo * info,
                             guint * usage_hint,
                             GstVaFeature * use_derived)

Gets current internal configuration of allocator.

Parameters:

allocator

a GstAllocator

info ( [out][optional])

a GstVideoInfo

usage_hint ( [out][optional])

VA usage hint

use_derived ( [out][optional])

a GstVaFeature if derived images are used for buffer mapping.

Returns

TRUE if allocator is already configured; FALSE otherwise.

Since : 1.22


GstVa.VaAllocator.prototype.get_format

function GstVa.VaAllocator.prototype.get_format(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_get_format'
}

Gets current internal configuration of allocator.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns a tuple made of:

(Number )

true if allocator is already configured; false otherwise.

info (GstVideo.VideoInfo )

true if allocator is already configured; false otherwise.

usage_hint (Number )

true if allocator is already configured; false otherwise.

use_derived (GstVa.VaFeature )

true if allocator is already configured; false otherwise.

Since : 1.22


GstVa.VaAllocator.get_format

def GstVa.VaAllocator.get_format (allocator):
    #python wrapper for 'gst_va_allocator_get_format'

Gets current internal configuration of allocator.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns a tuple made of:

(bool )

True if allocator is already configured; False otherwise.

info (GstVideo.VideoInfo )

True if allocator is already configured; False otherwise.

usage_hint (int )

True if allocator is already configured; False otherwise.

use_derived (GstVa.VaFeature )

True if allocator is already configured; False otherwise.

Since : 1.22


gst_va_allocator_peek_display

GstVaDisplay *
gst_va_allocator_peek_display (GstAllocator * allocator)

Parameters:

allocator

a GstAllocator

Returns ( [type#GstVaDisplay][transfer: none])

the display which this allocator belongs to. The reference of the display is unchanged.

Since : 1.22


GstVa.VaAllocator.prototype.peek_display

function GstVa.VaAllocator.prototype.peek_display(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_peek_display'
}

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns (GstVa.VaDisplay)

the display which this allocator belongs to. The reference of the display is unchanged.

Since : 1.22


GstVa.VaAllocator.peek_display

def GstVa.VaAllocator.peek_display (allocator):
    #python wrapper for 'gst_va_allocator_peek_display'

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns (GstVa.VaDisplay)

the display which this allocator belongs to. The reference of the display is unchanged.

Since : 1.22


gst_va_allocator_prepare_buffer

gboolean
gst_va_allocator_prepare_buffer (GstAllocator * allocator,
                                 GstBuffer * buffer)

This method will populate buffer with pooled VASurfaceID memories. It doesn't allocate new VASurfacesID.

Parameters:

allocator

a GstAllocator

buffer

an empty GstBuffer

Returns

TRUE if buffer was populated correctly; FALSE otherwise.

Since : 1.22


GstVa.VaAllocator.prototype.prepare_buffer

function GstVa.VaAllocator.prototype.prepare_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_allocator_prepare_buffer'
}

This method will populate buffer with pooled VASurfaceID memories. It doesn't allocate new VASurfacesID.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

an empty Gst.Buffer

Returns (Number)

true if buffer was populated correctly; false otherwise.

Since : 1.22


GstVa.VaAllocator.prepare_buffer

def GstVa.VaAllocator.prepare_buffer (allocator, buffer):
    #python wrapper for 'gst_va_allocator_prepare_buffer'

This method will populate buffer with pooled VASurfaceID memories. It doesn't allocate new VASurfacesID.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

an empty Gst.Buffer

Returns (bool)

True if buffer was populated correctly; False otherwise.

Since : 1.22


gst_va_allocator_set_format

gboolean
gst_va_allocator_set_format (GstAllocator * allocator,
                             GstVideoInfo * info,
                             guint usage_hint,
                             GstVaFeature use_derived)

Sets the configuration defined by info, usage_hint and use_derived for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Parameters:

allocator

a GstAllocator

info ( [inout])

a GstVideoInfo

usage_hint

VA usage hint

use_derived

a GstVaFeature

Returns

TRUE if the configuration is valid or updated; FALSE if configuration is not valid or not updated.

Since : 1.22


GstVa.VaAllocator.prototype.set_format

function GstVa.VaAllocator.prototype.set_format(allocator: Gst.Allocator, info: GstVideo.VideoInfo, usage_hint: Number, use_derived: GstVa.VaFeature): {
    // javascript wrapper for 'gst_va_allocator_set_format'
}

Sets the configuration defined by info, usage_hint and use_derived for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

usage_hint (Number)

VA usage hint

use_derived (GstVa.VaFeature)

a GstVa.VaFeature

Returns a tuple made of:

(Number )

true if the configuration is valid or updated; false if configuration is not valid or not updated.

info (GstVideo.VideoInfo )

true if the configuration is valid or updated; false if configuration is not valid or not updated.

Since : 1.22


GstVa.VaAllocator.set_format

def GstVa.VaAllocator.set_format (allocator, info, usage_hint, use_derived):
    #python wrapper for 'gst_va_allocator_set_format'

Sets the configuration defined by info, usage_hint and use_derived for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

usage_hint (int)

VA usage hint

use_derived (GstVa.VaFeature)

a GstVa.VaFeature

Returns a tuple made of:

(bool )

True if the configuration is valid or updated; False if configuration is not valid or not updated.

info (GstVideo.VideoInfo )

True if the configuration is valid or updated; False if configuration is not valid or not updated.

Since : 1.22


gst_va_allocator_set_hacks

gst_va_allocator_set_hacks (GstAllocator * allocator,
                            guint32 hacks)

Internal method to set allocator specific logic changes.

Parameters:

allocator

a GstAllocator

hacks

hacks id to set

Since : 1.22


gst_va_allocator_setup_buffer

gboolean
gst_va_allocator_setup_buffer (GstAllocator * allocator,
                               GstBuffer * buffer)

Populates an empty buffer with a VASuface backed GstMemory.

Parameters:

allocator

a GstAllocator

buffer

a GstBuffer

Returns

TRUE if buffer is populated; FALSE otherwise.

Since : 1.22


GstVa.VaAllocator.prototype.setup_buffer

function GstVa.VaAllocator.prototype.setup_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_allocator_setup_buffer'
}

Populates an empty buffer with a VASuface backed Gst.Memory.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

a Gst.Buffer

Returns (Number)

true if buffer is populated; false otherwise.

Since : 1.22


GstVa.VaAllocator.setup_buffer

def GstVa.VaAllocator.setup_buffer (allocator, buffer):
    #python wrapper for 'gst_va_allocator_setup_buffer'

Populates an empty buffer with a VASuface backed Gst.Memory.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

a Gst.Buffer

Returns (bool)

True if buffer is populated; False otherwise.

Since : 1.22


VaDmabufAllocator

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstAllocator
                ╰──VaDmabufAllocator

A pooled memory allocator backed by the DMABufs exported from a VASurfaceID. Also it is possible to import DMAbufs into a VASurfaceID.


VaDmabufAllocator

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Allocator
                ╰──VaDmabufAllocator

A pooled memory allocator backed by the DMABufs exported from a VASurfaceID. Also it is possible to import DMAbufs into a VASurfaceID.


VaDmabufAllocator

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Allocator
                ╰──VaDmabufAllocator

A pooled memory allocator backed by the DMABufs exported from a VASurfaceID. Also it is possible to import DMAbufs into a VASurfaceID.


Constructors

gst_va_dmabuf_allocator_new

GstAllocator *
gst_va_dmabuf_allocator_new (GstVaDisplay * display)

Instanciate a new pooled allocator backed with both DMABuf and VASurfaceID.

Parameters:

display

a GstVaDisplay

Returns

a new allocated GstAllocator

Since : 1.22


GstVa.VaDmabufAllocator.prototype.new

function GstVa.VaDmabufAllocator.prototype.new(display: GstVa.VaDisplay): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_new'
}

Instanciate a new pooled allocator backed with both DMABuf and VASurfaceID.

Parameters:

Returns (Gst.Allocator)

a new allocated Gst.Allocator

Since : 1.22


GstVa.VaDmabufAllocator.new

def GstVa.VaDmabufAllocator.new (display):
    #python wrapper for 'gst_va_dmabuf_allocator_new'

Instanciate a new pooled allocator backed with both DMABuf and VASurfaceID.

Parameters:

Returns (Gst.Allocator)

a new allocated Gst.Allocator

Since : 1.22


Functions

gst_va_dmabuf_allocator_flush

gst_va_dmabuf_allocator_flush (GstAllocator * allocator)

Removes all the memories in allocator's pool.

Parameters:

allocator

a GstAllocator

Since : 1.22


GstVa.VaDmabufAllocator.prototype.flush

function GstVa.VaDmabufAllocator.prototype.flush(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_flush'
}

Removes all the memories in allocator's pool.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Since : 1.22


GstVa.VaDmabufAllocator.flush

def GstVa.VaDmabufAllocator.flush (allocator):
    #python wrapper for 'gst_va_dmabuf_allocator_flush'

Removes all the memories in allocator's pool.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Since : 1.22


gst_va_dmabuf_allocator_get_format

gboolean
gst_va_dmabuf_allocator_get_format (GstAllocator * allocator,
                                    GstVideoInfo * info,
                                    guint * usage_hint)

Gets current internal configuration of allocator.

Parameters:

allocator

a GstAllocator

info ( [out][optional])

a GstVideoInfo

usage_hint ( [out][optional])

VA usage hint

Returns

TRUE if allocator is already configured; FALSE otherwise.

Since : 1.22


GstVa.VaDmabufAllocator.prototype.get_format

function GstVa.VaDmabufAllocator.prototype.get_format(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_get_format'
}

Gets current internal configuration of allocator.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns a tuple made of:

(Number )

true if allocator is already configured; false otherwise.

info (GstVideo.VideoInfo )

true if allocator is already configured; false otherwise.

usage_hint (Number )

true if allocator is already configured; false otherwise.

Since : 1.22


GstVa.VaDmabufAllocator.get_format

def GstVa.VaDmabufAllocator.get_format (allocator):
    #python wrapper for 'gst_va_dmabuf_allocator_get_format'

Gets current internal configuration of allocator.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

Returns a tuple made of:

(bool )

True if allocator is already configured; False otherwise.

info (GstVideo.VideoInfo )

True if allocator is already configured; False otherwise.

usage_hint (int )

True if allocator is already configured; False otherwise.

Since : 1.22


gst_va_dmabuf_allocator_prepare_buffer

gboolean
gst_va_dmabuf_allocator_prepare_buffer (GstAllocator * allocator,
                                        GstBuffer * buffer)

This method will populate buffer with pooled VASurfaceID/DMABuf memories. It doesn't allocate new VASurfacesID.

Parameters:

allocator

a GstAllocator

buffer

an empty GstBuffer

Returns

TRUE if buffer was populated correctly; FALSE otherwise.

Since : 1.22


GstVa.VaDmabufAllocator.prototype.prepare_buffer

function GstVa.VaDmabufAllocator.prototype.prepare_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_prepare_buffer'
}

This method will populate buffer with pooled VASurfaceID/DMABuf memories. It doesn't allocate new VASurfacesID.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

an empty Gst.Buffer

Returns (Number)

true if buffer was populated correctly; false otherwise.

Since : 1.22


GstVa.VaDmabufAllocator.prepare_buffer

def GstVa.VaDmabufAllocator.prepare_buffer (allocator, buffer):
    #python wrapper for 'gst_va_dmabuf_allocator_prepare_buffer'

This method will populate buffer with pooled VASurfaceID/DMABuf memories. It doesn't allocate new VASurfacesID.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

an empty Gst.Buffer

Returns (bool)

True if buffer was populated correctly; False otherwise.

Since : 1.22


gst_va_dmabuf_allocator_set_format

gboolean
gst_va_dmabuf_allocator_set_format (GstAllocator * allocator,
                                    GstVideoInfo * info,
                                    guint usage_hint)

Sets the configuration defined by info and usage_hint for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Parameters:

allocator

a GstAllocator

info

a GstVideoInfo

usage_hint

VA usage hint

Returns

TRUE if the configuration is valid or updated; FALSE if configuration is not valid or not updated.

Since : 1.22


GstVa.VaDmabufAllocator.prototype.set_format

function GstVa.VaDmabufAllocator.prototype.set_format(allocator: Gst.Allocator, info: GstVideo.VideoInfo, usage_hint: Number): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_set_format'
}

Sets the configuration defined by info and usage_hint for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

usage_hint (Number)

VA usage hint

Returns (Number)

true if the configuration is valid or updated; false if configuration is not valid or not updated.

Since : 1.22


GstVa.VaDmabufAllocator.set_format

def GstVa.VaDmabufAllocator.set_format (allocator, info, usage_hint):
    #python wrapper for 'gst_va_dmabuf_allocator_set_format'

Sets the configuration defined by info and usage_hint for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

usage_hint (int)

VA usage hint

Returns (bool)

True if the configuration is valid or updated; False if configuration is not valid or not updated.

Since : 1.22


gst_va_dmabuf_allocator_setup_buffer

gboolean
gst_va_dmabuf_allocator_setup_buffer (GstAllocator * allocator,
                                      GstBuffer * buffer)

This funciton creates a new VASurfaceID and exposes its DMABufs, later it populates the buffer with those DMABufs.

Return: TRUE if buffer is populated correctly; FALSE otherwise.

Parameters:

allocator

a GstAllocator

buffer

an empty GstBuffer

Returns
No description available

Since : 1.22


GstVa.VaDmabufAllocator.prototype.setup_buffer

function GstVa.VaDmabufAllocator.prototype.setup_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_setup_buffer'
}

This funciton creates a new VASurfaceID and exposes its DMABufs, later it populates the buffer with those DMABufs.

Return: true if buffer is populated correctly; false otherwise.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

an empty Gst.Buffer

Returns (Number)
No description available

Since : 1.22


GstVa.VaDmabufAllocator.setup_buffer

def GstVa.VaDmabufAllocator.setup_buffer (allocator, buffer):
    #python wrapper for 'gst_va_dmabuf_allocator_setup_buffer'

This funciton creates a new VASurfaceID and exposes its DMABufs, later it populates the buffer with those DMABufs.

Return: True if buffer is populated correctly; False otherwise.

Parameters:

allocator (Gst.Allocator)

a Gst.Allocator

buffer (Gst.Buffer)

an empty Gst.Buffer

Returns (bool)
No description available

Since : 1.22


Functions

gst_va_buffer_create_aux_surface

gboolean
gst_va_buffer_create_aux_surface (GstBuffer * buffer)

Creates a new VASurfaceID with buffer's allocator and attached it to it.

This method is used only by plugin's internal VA decoder.

Parameters:

buffer

a GstBuffer

Returns

TRUE if the new VASurfaceID is attached to buffer correctly; FALSE, otherwise.

Since : 1.22


GstVa.prototype.va_buffer_create_aux_surface

function GstVa.prototype.va_buffer_create_aux_surface(buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_buffer_create_aux_surface'
}

Creates a new VASurfaceID with buffer's allocator and attached it to it.

This method is used only by plugin's internal VA decoder.

Parameters:

buffer (Gst.Buffer)

a Gst.Buffer

Returns (Number)

true if the new VASurfaceID is attached to buffer correctly; false, otherwise.

Since : 1.22


GstVa.va_buffer_create_aux_surface

def GstVa.va_buffer_create_aux_surface (buffer):
    #python wrapper for 'gst_va_buffer_create_aux_surface'

Creates a new VASurfaceID with buffer's allocator and attached it to it.

This method is used only by plugin's internal VA decoder.

Parameters:

buffer (Gst.Buffer)

a Gst.Buffer

Returns (bool)

True if the new VASurfaceID is attached to buffer correctly; False, otherwise.

Since : 1.22


gst_va_buffer_get_aux_surface

VASurfaceID
gst_va_buffer_get_aux_surface (GstBuffer * buffer)

Parameters:

buffer

a GstBuffer

Returns ( [typeguint][transfer: none])

the VASurfaceID attached to buffer.

Since : 1.22


gst_va_buffer_get_surface

VASurfaceID
gst_va_buffer_get_surface (GstBuffer * buffer)

Parameters:

buffer

a GstBuffer

Returns ( [typeguint][transfer: none])

the VASurfaceID in buffer.

Since : 1.22


gst_va_buffer_peek_display

GstVaDisplay *
gst_va_buffer_peek_display (GstBuffer * buffer)

Parameters:

buffer

a GstBuffer

Returns ( [type#GstVaDisplay][transfer: none])

the display which this buffer belongs to. The reference of the display is unchanged.

Since : 1.22


GstVa.prototype.va_buffer_peek_display

function GstVa.prototype.va_buffer_peek_display(buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_buffer_peek_display'
}

Parameters:

buffer (Gst.Buffer)

a Gst.Buffer

Returns (GstVa.VaDisplay)

the display which this buffer belongs to. The reference of the display is unchanged.

Since : 1.22


GstVa.va_buffer_peek_display

def GstVa.va_buffer_peek_display (buffer):
    #python wrapper for 'gst_va_buffer_peek_display'

Parameters:

buffer (Gst.Buffer)

a Gst.Buffer

Returns (GstVa.VaDisplay)

the display which this buffer belongs to. The reference of the display is unchanged.

Since : 1.22


gst_va_dmabuf_memories_setup

gboolean
gst_va_dmabuf_memories_setup (GstVaDisplay * display,
                              GstVideoInfo * info,
                              guint n_planes,
                              GstMemory ** mem,
                              uintptr_t* fds,
                              gsize * offset,
                              guint usage_hint)

It imports the array of mem, representing a single frame, into a VASurfaceID and it's attached into every mem.

Parameters:

display

a GstVaDisplay

info

a GstVideoInfo

n_planes

number of planes

mem ( [arrayfixed-size=4][element-typeGstMemory])

Memories. One per plane.

fds ( [arraylength=n_planes][element-typeuintptr_t])

array of DMABuf file descriptors.

offset ( [arrayfixed-size=4][element-typegsize])

array of memory offsets.

usage_hint

VA usage hint.

Returns

TRUE if frame is imported correctly into a VASurfaceID; FALSE otherwise.

Since : 1.22


gst_va_memory_get_surface

VASurfaceID
gst_va_memory_get_surface (GstMemory * mem)

Parameters:

mem

a GstMemory

Returns ( [typeguint][transfer: none])

the VASurfaceID in mem.

Since : 1.22


gst_va_memory_peek_display

GstVaDisplay *
gst_va_memory_peek_display (GstMemory * mem)

Parameters:

mem

a GstMemory

Returns ( [type#GstVaDisplay][transfer: none])

the display which this mem belongs to. The reference of the display is unchanged.

Since : 1.22


GstVa.prototype.va_memory_peek_display

function GstVa.prototype.va_memory_peek_display(mem: Gst.Memory): {
    // javascript wrapper for 'gst_va_memory_peek_display'
}

Parameters:

mem (Gst.Memory)

a Gst.Memory

Returns (GstVa.VaDisplay)

the display which this mem belongs to. The reference of the display is unchanged.

Since : 1.22


GstVa.va_memory_peek_display

def GstVa.va_memory_peek_display (mem):
    #python wrapper for 'gst_va_memory_peek_display'

Parameters:

mem (Gst.Memory)

a Gst.Memory

Returns (GstVa.VaDisplay)

the display which this mem belongs to. The reference of the display is unchanged.

Since : 1.22


Constants

GST_ALLOCATOR_VASURFACE

#define GST_ALLOCATOR_VASURFACE   "VAMemory"

GstVa.ALLOCATOR_VASURFACE


GstVa.ALLOCATOR_VASURFACE


GST_MAP_VA

#define GST_MAP_VA (GST_MAP_FLAG_LAST << 1)

Flag indicating that we should map the VASurfaceID instead of to system memory, so users can use libva primitives to operate with that surface.


GstVa.MAP_VA

Flag indicating that we should map the VASurfaceID instead of to system memory, so users can use libva primitives to operate with that surface.


GstVa.MAP_VA

Flag indicating that we should map the VASurfaceID instead of to system memory, so users can use libva primitives to operate with that surface.


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