GstGLFilter
GstGLFilter helps to implement simple OpenGL filter elements taking a single input and producing a single output with a GstGLFramebuffer
GstGLFilter
GObject ╰──GInitiallyUnowned ╰──GstObject ╰──GstElement ╰──GstBaseTransform ╰──GstGLBaseFilter ╰──GstGLFilter
Members
parent
		(GstGLBaseFilter)
		–
	in_info
		(GstVideoInfo)
		–
	the video info for input buffers
out_info
		(GstVideoInfo)
		–
	the video info for output buffers
in_texture_target
		(GstGLTextureTarget)
		–
	The texture target of the input buffers (usually 2D)
out_texture_target
		(GstGLTextureTarget)
		–
	The texture target of the output buffers (usually 2D)
fbo
		(GstGLFramebuffer *)
		–
	GstGLFramebuffer object used for transformations (only for subclass usage)
Class structure
GstGL.GLFilter
GObject.Object ╰──GObject.InitiallyUnowned ╰──Gst.Object ╰──Gst.Element ╰──GstBase.BaseTransform ╰──GstGL.GLBaseFilter ╰──GstGL.GLFilter
Members
parent
		(GstGL.GLBaseFilter)
		–
	in_info
		(GstVideo.VideoInfo)
		–
	the video info for input buffers
out_info
		(GstVideo.VideoInfo)
		–
	the video info for output buffers
in_texture_target
		(GstGL.GLTextureTarget)
		–
	The texture target of the input buffers (usually 2D)
out_texture_target
		(GstGL.GLTextureTarget)
		–
	The texture target of the output buffers (usually 2D)
fbo
		(GstGL.GLFramebuffer)
		–
	GstGL.GLFramebuffer object used for transformations (only for subclass usage)
GstGL.GLFilter
GObject.Object ╰──GObject.InitiallyUnowned ╰──Gst.Object ╰──Gst.Element ╰──GstBase.BaseTransform ╰──GstGL.GLBaseFilter ╰──GstGL.GLFilter
Members
parent
		(GstGL.GLBaseFilter)
		–
	in_info
		(GstVideo.VideoInfo)
		–
	the video info for input buffers
out_info
		(GstVideo.VideoInfo)
		–
	the video info for output buffers
in_texture_target
		(GstGL.GLTextureTarget)
		–
	The texture target of the input buffers (usually 2D)
out_texture_target
		(GstGL.GLTextureTarget)
		–
	The texture target of the output buffers (usually 2D)
fbo
		(GstGL.GLFramebuffer)
		–
	GstGL.GLFramebuffer object used for transformations (only for subclass usage)
Methods
gst_gl_filter_draw_fullscreen_quad
gst_gl_filter_draw_fullscreen_quad (GstGLFilter * filter)
Render a fullscreen quad using the current GL state. The only GL state this modifies is the necessary vertex/index buffers and, if necessary, a Vertex Array Object for drawing a fullscreen quad. Framebuffer state, any shaders, viewport state, etc must be setup by the caller.
Parameters:
filter
				–
	Since : 1.10
GstGL.GLFilter.prototype.draw_fullscreen_quad
function GstGL.GLFilter.prototype.draw_fullscreen_quad(): {
    // javascript wrapper for 'gst_gl_filter_draw_fullscreen_quad'
}
Render a fullscreen quad using the current GL state. The only GL state this modifies is the necessary vertex/index buffers and, if necessary, a Vertex Array Object for drawing a fullscreen quad. Framebuffer state, any shaders, viewport state, etc must be setup by the caller.
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	Since : 1.10
GstGL.GLFilter.draw_fullscreen_quad
def GstGL.GLFilter.draw_fullscreen_quad (self):
    #python wrapper for 'gst_gl_filter_draw_fullscreen_quad'
Render a fullscreen quad using the current GL state. The only GL state this modifies is the necessary vertex/index buffers and, if necessary, a Vertex Array Object for drawing a fullscreen quad. Framebuffer state, any shaders, viewport state, etc must be setup by the caller.
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	Since : 1.10
gst_gl_filter_filter_texture
gboolean gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * input, GstBuffer * output)
Calls filter_texture vfunc with correctly mapped GstGLMemory
whether the transformation succeeded
Since : 1.4
GstGL.GLFilter.prototype.filter_texture
function GstGL.GLFilter.prototype.filter_texture(input: Gst.Buffer, output: Gst.Buffer): {
    // javascript wrapper for 'gst_gl_filter_filter_texture'
}
Calls filter_texture vfunc with correctly mapped GstGL.GLMemory
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						Gst.Buffer
						)
				–
	an input buffer
output
					(
						Gst.Buffer
						)
				–
	an output buffer
whether the transformation succeeded
Since : 1.4
GstGL.GLFilter.filter_texture
def GstGL.GLFilter.filter_texture (self, input, output):
    #python wrapper for 'gst_gl_filter_filter_texture'
Calls filter_texture vfunc with correctly mapped GstGL.GLMemory
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						Gst.Buffer
						)
				–
	an input buffer
output
					(
						Gst.Buffer
						)
				–
	an output buffer
whether the transformation succeeded
Since : 1.4
gst_gl_filter_render_to_target
gboolean gst_gl_filter_render_to_target (GstGLFilter * filter, GstGLMemory * input, GstGLMemory * output, GstGLFilterRenderFunc func, gpointer data)
Transforms input into output using func on through FBO.
Parameters:
filter
				–
	input
				–
	the input texture
output
				–
	the output texture
func
					(
						
[scope call]
						)
				–
	the function to transform input into output. called with data
data
					(
						
[allow-none]
						)
				–
	the data associated with func
the return value of func
Since : 1.10
GstGL.GLFilter.prototype.render_to_target
function GstGL.GLFilter.prototype.render_to_target(input: GstGL.GLMemory, output: GstGL.GLMemory, func: GstGL.GLFilterRenderFunc, data: Object): {
    // javascript wrapper for 'gst_gl_filter_render_to_target'
}
Transforms input into output using func on through FBO.
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						GstGL.GLMemory
						)
				–
	the input texture
output
					(
						GstGL.GLMemory
						)
				–
	the output texture
func
					(
						GstGL.GLFilterRenderFunc
						)
				–
	the function to transform input into output. called with data
data
					(
						Object
						)
				–
	the data associated with func
the return value of func
Since : 1.10
GstGL.GLFilter.render_to_target
def GstGL.GLFilter.render_to_target (self, input, output, func, *data):
    #python wrapper for 'gst_gl_filter_render_to_target'
Transforms input into output using func on through FBO.
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						GstGL.GLMemory
						)
				–
	the input texture
output
					(
						GstGL.GLMemory
						)
				–
	the output texture
func
					(
						GstGL.GLFilterRenderFunc
						)
				–
	the function to transform input into output. called with data
data
					(
						variadic
						)
				–
	the data associated with func
the return value of func
Since : 1.10
gst_gl_filter_render_to_target_with_shader
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter, GstGLMemory * input, GstGLMemory * output, GstGLShader * shader)
Transforms input into output using shader with a FBO.
See also: gst_gl_filter_render_to_target
Parameters:
filter
				–
	input
				–
	the input texture
output
				–
	the output texture
shader
				–
	the shader to use.
Since : 1.4
GstGL.GLFilter.prototype.render_to_target_with_shader
function GstGL.GLFilter.prototype.render_to_target_with_shader(input: GstGL.GLMemory, output: GstGL.GLMemory, shader: GstGL.GLShader): {
    // javascript wrapper for 'gst_gl_filter_render_to_target_with_shader'
}
Transforms input into output using shader with a FBO.
See also: GstGL.GLFilter.prototype.render_to_target
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						GstGL.GLMemory
						)
				–
	the input texture
output
					(
						GstGL.GLMemory
						)
				–
	the output texture
shader
					(
						GstGL.GLShader
						)
				–
	the shader to use.
Since : 1.4
GstGL.GLFilter.render_to_target_with_shader
def GstGL.GLFilter.render_to_target_with_shader (self, input, output, shader):
    #python wrapper for 'gst_gl_filter_render_to_target_with_shader'
Transforms input into output using shader with a FBO.
See also: GstGL.GLFilter.render_to_target
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						GstGL.GLMemory
						)
				–
	the input texture
output
					(
						GstGL.GLMemory
						)
				–
	the output texture
shader
					(
						GstGL.GLShader
						)
				–
	the shader to use.
Since : 1.4
Functions
gst_gl_filter_add_rgba_pad_templates
gst_gl_filter_add_rgba_pad_templates (GstGLFilterClass * klass)
Parameters:
klass
				–
	GstGL.GLFilter.prototype.add_rgba_pad_templates
function GstGL.GLFilter.prototype.add_rgba_pad_templates(klass: GstGL.GLFilterClass): {
    // javascript wrapper for 'gst_gl_filter_add_rgba_pad_templates'
}
	Parameters:
klass
					(
						GstGL.GLFilterClass
						)
				–
	GstGL.GLFilter.add_rgba_pad_templates
def GstGL.GLFilter.add_rgba_pad_templates (klass):
    #python wrapper for 'gst_gl_filter_add_rgba_pad_templates'
	Parameters:
klass
					(
						GstGL.GLFilterClass
						)
				–
	Virtual Methods
filter
gboolean filter (GstGLFilter * filter, GstBuffer * inbuf, GstBuffer * outbuf)
perform operations on the input and output buffers. In general, you should avoid using this method if at all possible. One valid use-case for using this is keeping previous buffers for future calculations. Note: If filter exists, then filter_texture is not run
Parameters:
filter
				–
	inbuf
				–
	outbuf
				–
	vfunc_filter
function vfunc_filter(filter: GstGL.GLFilter, inbuf: Gst.Buffer, outbuf: Gst.Buffer): {
    // javascript implementation of the 'filter' virtual method
}
perform operations on the input and output buffers. In general, you should avoid using this method if at all possible. One valid use-case for using this is keeping previous buffers for future calculations. Note: If filter exists, then filter_texture is not run
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	inbuf
					(
						Gst.Buffer
						)
				–
	outbuf
					(
						Gst.Buffer
						)
				–
	do_filter
def do_filter (filter, inbuf, outbuf):
    #python implementation of the 'filter' virtual method
perform operations on the input and output buffers. In general, you should avoid using this method if at all possible. One valid use-case for using this is keeping previous buffers for future calculations. Note: If filter exists, then filter_texture is not run
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	inbuf
					(
						Gst.Buffer
						)
				–
	outbuf
					(
						Gst.Buffer
						)
				–
	filter_texture
gboolean filter_texture (GstGLFilter * filter, GstGLMemory * input, GstGLMemory * output)
given in_tex, transform it into out_tex. Not used if filter exists
Parameters:
filter
				–
	input
				–
	output
				–
	vfunc_filter_texture
function vfunc_filter_texture(filter: GstGL.GLFilter, input: GstGL.GLMemory, output: GstGL.GLMemory): {
    // javascript implementation of the 'filter_texture' virtual method
}
given in_tex, transform it into out_tex. Not used if filter exists
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						GstGL.GLMemory
						)
				–
	output
					(
						GstGL.GLMemory
						)
				–
	do_filter_texture
def do_filter_texture (filter, input, output):
    #python implementation of the 'filter_texture' virtual method
given in_tex, transform it into out_tex. Not used if filter exists
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	input
					(
						GstGL.GLMemory
						)
				–
	output
					(
						GstGL.GLMemory
						)
				–
	init_fbo
gboolean init_fbo (GstGLFilter * filter)
perform initialization when the Framebuffer object is created
Parameters:
filter
				–
	vfunc_init_fbo
function vfunc_init_fbo(filter: GstGL.GLFilter): {
    // javascript implementation of the 'init_fbo' virtual method
}
perform initialization when the Framebuffer object is created
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	do_init_fbo
def do_init_fbo (filter):
    #python implementation of the 'init_fbo' virtual method
perform initialization when the Framebuffer object is created
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	set_caps
gboolean set_caps (GstGLFilter * filter, GstCaps * incaps, GstCaps * outcaps)
mirror from GstBaseTransform
Parameters:
filter
				–
	incaps
				–
	outcaps
				–
	vfunc_set_caps
function vfunc_set_caps(filter: GstGL.GLFilter, incaps: Gst.Caps, outcaps: Gst.Caps): {
    // javascript implementation of the 'set_caps' virtual method
}
mirror from GstBase.BaseTransform
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	incaps
					(
						Gst.Caps
						)
				–
	outcaps
					(
						Gst.Caps
						)
				–
	do_set_caps
def do_set_caps (filter, incaps, outcaps):
    #python implementation of the 'set_caps' virtual method
mirror from GstBase.BaseTransform
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	incaps
					(
						Gst.Caps
						)
				–
	outcaps
					(
						Gst.Caps
						)
				–
	transform_internal_caps
GstCaps * transform_internal_caps (GstGLFilter * filter, GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps)
Perform sub-class specific modifications of the caps to be processed between upload on input and before download for output.
Parameters:
filter
				–
	direction
				–
	caps
				–
	filter_caps
				–
	vfunc_transform_internal_caps
function vfunc_transform_internal_caps(filter: GstGL.GLFilter, direction: Gst.PadDirection, caps: Gst.Caps, filter_caps: Gst.Caps): {
    // javascript implementation of the 'transform_internal_caps' virtual method
}
Perform sub-class specific modifications of the caps to be processed between upload on input and before download for output.
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	direction
					(
						Gst.PadDirection
						)
				–
	caps
					(
						Gst.Caps
						)
				–
	filter_caps
					(
						Gst.Caps
						)
				–
	do_transform_internal_caps
def do_transform_internal_caps (filter, direction, caps, filter_caps):
    #python implementation of the 'transform_internal_caps' virtual method
Perform sub-class specific modifications of the caps to be processed between upload on input and before download for output.
Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	direction
					(
						Gst.PadDirection
						)
				–
	caps
					(
						Gst.Caps
						)
				–
	filter_caps
					(
						Gst.Caps
						)
				–
	Callbacks
GstGLFilterRenderFunc
gboolean (*GstGLFilterRenderFunc) (GstGLFilter * filter, GstGLMemory * in_tex, gpointer user_data)
whether the render succeeded
Since : 1.10
GstGL.GLFilterRenderFunc
function GstGL.GLFilterRenderFunc(filter: GstGL.GLFilter, in_tex: GstGL.GLMemory, user_data: Object): {
    // javascript wrapper for 'GstGLFilterRenderFunc'
}
	Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	the GstGL.GLFilter
in_tex
					(
						GstGL.GLMemory
						)
				–
	the input GstGL.GLMemory to render
user_data
					(
						Object
						)
				–
	user data
whether the render succeeded
Since : 1.10
GstGL.GLFilterRenderFunc
def GstGL.GLFilterRenderFunc (filter, in_tex, *user_data):
    #python wrapper for 'GstGLFilterRenderFunc'
	Parameters:
filter
					(
						GstGL.GLFilter
						)
				–
	the GstGL.GLFilter
in_tex
					(
						GstGL.GLMemory
						)
				–
	the input GstGL.GLMemory to render
user_data
					(
						variadic
						)
				–
	user data
whether the render succeeded
Since : 1.10
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