GstGLBaseFilter

GstGLBaseFilter handles the nitty gritty details of retrieving an OpenGL context. It also provided some wrappers around GstBaseTransform's start(), stop() and set_caps() virtual methods that ensure an OpenGL context is available and current in the calling thread.

GstGLBaseFilter 

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBaseTransform
                    ╰──GstGLBaseFilter
                        ╰──GstGLFilter

The parent instance type of a base GStreamer GL Filter.

Members

parent (GstBaseTransform) –
No description available
display (GstGLDisplay *) –

the currently configured GstGLDisplay

context (GstGLContext *) –

the currently configured GstGLContext

in_caps (GstCaps *) –

the currently configured input GstCaps

out_caps (GstCaps *) –

the currently configured output GstCaps

Class structure

GstGLBaseFilterClass

The base class for GStreamer GL Filter.

Fields
parent_class (GstBaseTransformClass) –
No description available
supported_gl_api (GstGLAPI) –

the logical-OR of GstGLAPI's supported by this element

GstGL.GLBaseFilterClass

The base class for GStreamer GL Filter.

Attributes
parent_class (GstBase.BaseTransformClass) –
No description available
supported_gl_api (GstGL.GLAPI) –

the logical-OR of GstGL.GLAPI's supported by this element

GstGL.GLBaseFilterClass

The base class for GStreamer GL Filter.

Attributes
parent_class (GstBase.BaseTransformClass) –
No description available
supported_gl_api (GstGL.GLAPI) –

the logical-OR of GstGL.GLAPI's supported by this element

GstGL.GLBaseFilter 

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Element
                ╰──GstBase.BaseTransform
                    ╰──GstGL.GLBaseFilter
                        ╰──GstGL.GLFilter

The parent instance type of a base GStreamer GL Filter.

Members

parent (GstBase.BaseTransform) –
No description available
display (GstGL.GLDisplay) –

the currently configured GstGL.GLDisplay

context (GstGL.GLContext) –

the currently configured GstGL.GLContext

in_caps (Gst.Caps) –

the currently configured input Gst.Caps

out_caps (Gst.Caps) –

the currently configured output Gst.Caps

GstGL.GLBaseFilter 

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Element
                ╰──GstBase.BaseTransform
                    ╰──GstGL.GLBaseFilter
                        ╰──GstGL.GLFilter

The parent instance type of a base GStreamer GL Filter.

Members

parent (GstBase.BaseTransform) –
No description available
display (GstGL.GLDisplay) –

the currently configured GstGL.GLDisplay

context (GstGL.GLContext) –

the currently configured GstGL.GLContext

in_caps (Gst.Caps) –

the currently configured input Gst.Caps

out_caps (Gst.Caps) –

the currently configured output Gst.Caps

Methods

gst_gl_base_filter_find_gl_context 

gboolean
gst_gl_base_filter_find_gl_context (GstGLBaseFilter * filter)

Parameters:

filter –

a GstGLBaseFilter

Returns –

Whether an OpenGL context could be retrieved or created successfully

Since : 1.16

GstGL.GLBaseFilter.prototype.find_gl_context 

function GstGL.GLBaseFilter.prototype.find_gl_context(): {
    // javascript wrapper for 'gst_gl_base_filter_find_gl_context'
}

Parameters:

filter (GstGL.GLBaseFilter) –

a GstGL.GLBaseFilter

Returns (Number) –

Whether an OpenGL context could be retrieved or created successfully

Since : 1.16

GstGL.GLBaseFilter.find_gl_context 

def GstGL.GLBaseFilter.find_gl_context (self):
    #python wrapper for 'gst_gl_base_filter_find_gl_context'

Parameters:

filter (GstGL.GLBaseFilter) –

a GstGL.GLBaseFilter

Returns (bool) –

Whether an OpenGL context could be retrieved or created successfully

Since : 1.16

gst_gl_base_filter_get_gl_context 

GstGLContext *
gst_gl_base_filter_get_gl_context (GstGLBaseFilter * filter)

Parameters:

filter –

a GstGLBaseFilter

Returns ( [transfer: full][nullable]) –

the GstGLContext found by filter

Since : 1.18

GstGL.GLBaseFilter.prototype.get_gl_context 

function GstGL.GLBaseFilter.prototype.get_gl_context(): {
    // javascript wrapper for 'gst_gl_base_filter_get_gl_context'
}

Parameters:

filter (GstGL.GLBaseFilter) –

a GstGL.GLBaseFilter

Returns (GstGL.GLContext) –

the GstGL.GLContext found by filter

Since : 1.18

GstGL.GLBaseFilter.get_gl_context 

def GstGL.GLBaseFilter.get_gl_context (self):
    #python wrapper for 'gst_gl_base_filter_get_gl_context'

Parameters:

filter (GstGL.GLBaseFilter) –

a GstGL.GLBaseFilter

Returns (GstGL.GLContext) –

the GstGL.GLContext found by filter

Since : 1.18

Properties

context 

“context” GstGLContext *

Flags : Read

context 

“context” GstGL.GLContext

Flags : Read

context 

“self.props.context” GstGL.GLContext

Flags : Read

Virtual Methods

gl_set_caps 

gboolean
gl_set_caps (GstGLBaseFilter * filter,
             GstCaps * incaps,
             GstCaps * outcaps)

called in the GL thread when caps are set on filter. Note: this will also be called when changing OpenGL contexts where GstBaseTransform::set_caps may not.

Parameters:

filter –
No description available
incaps –
No description available
outcaps –
No description available
Returns –
No description available

vfunc_gl_set_caps 

function vfunc_gl_set_caps(filter: GstGL.GLBaseFilter, incaps: Gst.Caps, outcaps: Gst.Caps): {
    // javascript implementation of the 'gl_set_caps' virtual method
}

called in the GL thread when caps are set on filter. Note: this will also be called when changing OpenGL contexts where GstBaseTransform::set_caps may not.

Parameters:

filter (GstGL.GLBaseFilter) –
No description available
incaps (Gst.Caps) –
No description available
outcaps (Gst.Caps) –
No description available
Returns (Number) –
No description available

do_gl_set_caps 

def do_gl_set_caps (filter, incaps, outcaps):
    #python implementation of the 'gl_set_caps' virtual method

called in the GL thread when caps are set on filter. Note: this will also be called when changing OpenGL contexts where GstBaseTransform::set_caps may not.

Parameters:

filter (GstGL.GLBaseFilter) –
No description available
incaps (Gst.Caps) –
No description available
outcaps (Gst.Caps) –
No description available
Returns (bool) –
No description available

gl_start 

gboolean
gl_start (GstGLBaseFilter * filter)

called in the GL thread to setup the element GL state.

Parameters:

filter –
No description available
Returns –
No description available

vfunc_gl_start 

function vfunc_gl_start(filter: GstGL.GLBaseFilter): {
    // javascript implementation of the 'gl_start' virtual method
}

called in the GL thread to setup the element GL state.

Parameters:

filter (GstGL.GLBaseFilter) –
No description available
Returns (Number) –
No description available

do_gl_start 

def do_gl_start (filter):
    #python implementation of the 'gl_start' virtual method

called in the GL thread to setup the element GL state.

Parameters:

filter (GstGL.GLBaseFilter) –
No description available
Returns (bool) –
No description available

gl_stop 

gl_stop (GstGLBaseFilter * filter)

called in the GL thread to setup the element GL state.

Parameters:

filter –
No description available

vfunc_gl_stop 

function vfunc_gl_stop(filter: GstGL.GLBaseFilter): {
    // javascript implementation of the 'gl_stop' virtual method
}

called in the GL thread to setup the element GL state.

Parameters:

filter (GstGL.GLBaseFilter) –
No description available

do_gl_stop 

def do_gl_stop (filter):
    #python implementation of the 'gl_stop' virtual method

called in the GL thread to setup the element GL state.

Parameters:

filter (GstGL.GLBaseFilter) –
No description available

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