GstVaDisplay

It is a generic wrapper for VADisplay. To create new instances subclasses are required, depending on the display type to use (v.gr. DRM, X11, Wayland, etc.).

The purpose of this class is to be shared among pipelines via GstContext so all the VA processing elements will use the same display entry. Application developers can create their own subclass, based on their display, and shared it via the synced bus message for the application.

GstVaDisplay

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstVaDisplay
                ╰──GstVaDisplayDrm
                ╰──GstVaDisplayWrapped

The common VA display object structure.

Members

parent (GstObject) –

parent GstObject

Since : 1.20

Class structure

GstVaDisplayClass

The common VA display object class structure.

Fields

parent_class (GstObjectClass) –

parent GstObjectClass

Since : 1.20

GstVa.VaDisplayClass

The common VA display object class structure.

Attributes

parent_class (Gst.ObjectClass) –

parent Gst.ObjectClass

Since : 1.20

GstVa.VaDisplayClass

The common VA display object class structure.

Attributes

parent_class (Gst.ObjectClass) –

parent Gst.ObjectClass

Since : 1.20

GstVa.VaDisplay

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──GstVa.VaDisplay
                ╰──GstVa.VaDisplayDrm
                ╰──GstVa.VaDisplayWrapped

The common VA display object structure.

Members

parent (Gst.Object) –

parent Gst.Object

Since : 1.20

GstVa.VaDisplay

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──GstVa.VaDisplay
                ╰──GstVa.VaDisplayDrm
                ╰──GstVa.VaDisplayWrapped

The common VA display object structure.

Members

parent (Gst.Object) –

parent Gst.Object

Since : 1.20

Methods

gst_va_display_check_version

gboolean
gst_va_display_check_version (GstVaDisplay * self,
                              guint major,
                              guint minor)

Parameters:

self –

a GstVaDisplay

major –

major version to check

minor –

minor version to check

Returns –

whether driver version is equal or greater than major.@minor

Since : 1.24

GstVa.VaDisplay.prototype.check_version

function GstVa.VaDisplay.prototype.check_version(major: Number, minor: Number): {
    // javascript wrapper for 'gst_va_display_check_version'
}

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay

major (Number) –

major version to check

minor (Number) –

minor version to check

Returns (Number) –

whether driver version is equal or greater than major.@minor

Since : 1.24

GstVa.VaDisplay.check_version

def GstVa.VaDisplay.check_version (self, major, minor):
    #python wrapper for 'gst_va_display_check_version'

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay

major (int) –

major version to check

minor (int) –

minor version to check

Returns (bool) –

whether driver version is equal or greater than major.@minor

Since : 1.24

gst_va_display_get_implementation

GstVaImplementation
gst_va_display_get_implementation (GstVaDisplay * self)

Get the the GstVaImplementation type of self.

Parameters:

self –

a GstVaDisplay type display.

Returns –

GstVaImplementation.

Since : 1.20

GstVa.VaDisplay.prototype.get_implementation

function GstVa.VaDisplay.prototype.get_implementation(): {
    // javascript wrapper for 'gst_va_display_get_implementation'
}

Get the the GstVa.VaImplementation type of self.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay type display.

Returns (GstVa.VaImplementation) –

GstVa.VaImplementation.

Since : 1.20

GstVa.VaDisplay.get_implementation

def GstVa.VaDisplay.get_implementation (self):
    #python wrapper for 'gst_va_display_get_implementation'

Get the the GstVa.VaImplementation type of self.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay type display.

Returns (GstVa.VaImplementation) –

GstVa.VaImplementation.

Since : 1.20

gst_va_display_get_va_dpy

gpointer
gst_va_display_get_va_dpy (GstVaDisplay * self)

Get the VA display handle of the self.

Parameters:

self –

a GstVaDisplay type display.

Returns –

the VA display handle.

Since : 1.20

GstVa.VaDisplay.prototype.get_va_dpy

function GstVa.VaDisplay.prototype.get_va_dpy(): {
    // javascript wrapper for 'gst_va_display_get_va_dpy'
}

Get the VA display handle of the self.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay type display.

Returns (Object) –

the VA display handle.

Since : 1.20

GstVa.VaDisplay.get_va_dpy

def GstVa.VaDisplay.get_va_dpy (self):
    #python wrapper for 'gst_va_display_get_va_dpy'

Get the VA display handle of the self.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay type display.

Returns (object) –

the VA display handle.

Since : 1.20

gst_va_display_initialize

gboolean
gst_va_display_initialize (GstVaDisplay * self)

If the display is set by the user (foreign) it is assumed that the driver is already initialized, thus this function is noop.

If the display is opened internally, this function will initialize the driver and it will set driver's message callbacks.

NOTE: this function is supposed to be private, only used by GstVaDisplay descendants.

Parameters:

self –

a GstVaDisplay

Returns –

TRUE if the VA driver can be initialized; FALSE otherwise

Since : 1.20

GstVa.VaDisplay.prototype.initialize

function GstVa.VaDisplay.prototype.initialize(): {
    // javascript wrapper for 'gst_va_display_initialize'
}

If the display is set by the user (foreign) it is assumed that the driver is already initialized, thus this function is noop.

If the display is opened internally, this function will initialize the driver and it will set driver's message callbacks.

NOTE: this function is supposed to be private, only used by GstVaDisplay descendants.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay

Returns (Number) –

true if the VA driver can be initialized; false otherwise

Since : 1.20

GstVa.VaDisplay.initialize

def GstVa.VaDisplay.initialize (self):
    #python wrapper for 'gst_va_display_initialize'

If the display is set by the user (foreign) it is assumed that the driver is already initialized, thus this function is noop.

If the display is opened internally, this function will initialize the driver and it will set driver's message callbacks.

NOTE: this function is supposed to be private, only used by GstVaDisplay descendants.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay

Returns (bool) –

True if the VA driver can be initialized; False otherwise

Since : 1.20

Properties

description

“description” gchar *

Flags : Read

description

“description” String

Flags : Read

description

“self.props.description” str

Flags : Read

va-display

“va-display” gpointer

Flags : Read / Write / Construct Only

va-display

“va-display” Object

Flags : Read / Write / Construct Only

va_display

“self.props.va_display” object

Flags : Read / Write / Construct Only

Virtual Methods

create_va_display

gpointer
create_va_display (GstVaDisplay * self)

This is called when the subclass has to create the internal VADisplay.

Parameters:

self –

a GstVaDisplay instance

Returns –

The created VADisplay

vfunc_create_va_display

function vfunc_create_va_display(self: GstVa.VaDisplay): {
    // javascript implementation of the 'create_va_display' virtual method
}

This is called when the subclass has to create the internal VADisplay.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay instance

Returns (Object) –

The created VADisplay

do_create_va_display

def do_create_va_display (self):
    #python implementation of the 'create_va_display' virtual method

This is called when the subclass has to create the internal VADisplay.

Parameters:

self (GstVa.VaDisplay) –

a GstVa.VaDisplay instance

Returns (object) –

The created VADisplay

Function Macros

GST_VA_DISPLAY_IS_IMPLEMENTATION

#define GST_VA_DISPLAY_IS_IMPLEMENTATION(display, impl) \
  (gst_va_display_is_implementation (display, G_PASTE (GST_VA_IMPLEMENTATION_, impl)))

Check whether the display is the implementation of the specified GstVaImplementation type.

Since : 1.20

Enumerations

GstVaFeature

Members

GST_VA_FEATURE_DISABLED (0) –

The feature is disabled.

GST_VA_FEATURE_ENABLED (1) –

The feature is enabled.

GST_VA_FEATURE_AUTO (2) –

The feature is enabled automatically.

Since : 1.22

GstVa.VaFeature

Members

GstVa.VaFeature.DISABLED (0) –

The feature is disabled.

GstVa.VaFeature.ENABLED (1) –

The feature is enabled.

GstVa.VaFeature.AUTO (2) –

The feature is enabled automatically.

Since : 1.22

GstVa.VaFeature

Members

GstVa.VaFeature.DISABLED (0) –

The feature is disabled.

GstVa.VaFeature.ENABLED (1) –

The feature is enabled.

GstVa.VaFeature.AUTO (2) –

The feature is enabled automatically.

Since : 1.22

GstVaImplementation

Types of different VA API implemented drivers. These are the typical and the most widely used VA drivers.

Members

GST_VA_IMPLEMENTATION_MESA_GALLIUM (0) –

The mesa gallium implementation.

GST_VA_IMPLEMENTATION_INTEL_I965 (1) –

The legacy i965 intel implementation.

GST_VA_IMPLEMENTATION_INTEL_IHD (2) –

The iHD intel implementation.

GST_VA_IMPLEMENTATION_OTHER (3) –

Other implementation.

GST_VA_IMPLEMENTATION_INVALID (4) –

Invalid implementation.

Since : 1.20

GstVa.VaImplementation

Types of different VA API implemented drivers. These are the typical and the most widely used VA drivers.

Members

GstVa.VaImplementation.MESA_GALLIUM (0) –

The mesa gallium implementation.

GstVa.VaImplementation.INTEL_I965 (1) –

The legacy i965 intel implementation.

GstVa.VaImplementation.INTEL_IHD (2) –

The iHD intel implementation.

GstVa.VaImplementation.OTHER (3) –

Other implementation.

GstVa.VaImplementation.INVALID (4) –

Invalid implementation.

Since : 1.20

GstVa.VaImplementation

Types of different VA API implemented drivers. These are the typical and the most widely used VA drivers.

Members

GstVa.VaImplementation.MESA_GALLIUM (0) –

The mesa gallium implementation.

GstVa.VaImplementation.INTEL_I965 (1) –

The legacy i965 intel implementation.

GstVa.VaImplementation.INTEL_IHD (2) –

The iHD intel implementation.

GstVa.VaImplementation.OTHER (3) –

Other implementation.

GstVa.VaImplementation.INVALID (4) –

Invalid implementation.

Since : 1.20

Constants

GST_CAPS_FEATURE_MEMORY_VA

#define GST_CAPS_FEATURE_MEMORY_VA "memory:VAMemory"

Since : 1.20

GstVa.CAPS_FEATURE_MEMORY_VA

Since : 1.20

GstVa.CAPS_FEATURE_MEMORY_VA

Since : 1.20

GST_VA_DISPLAY_HANDLE_CONTEXT_TYPE_STR

#define GST_VA_DISPLAY_HANDLE_CONTEXT_TYPE_STR "gst.va.display.handle"

Since : 1.20

GstVa.VA_DISPLAY_HANDLE_CONTEXT_TYPE_STR

Since : 1.20

GstVa.VA_DISPLAY_HANDLE_CONTEXT_TYPE_STR

Since : 1.20

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