Callbacks

	GLAllocationParamsCopyFunc (src, dest)
	GLAllocationParamsFreeFunc (params)
	GLAsyncDebugLogGetMessage (*user_data)
	GLBaseMemoryAllocatorAllocFunction (allocator, params)
	GLBaseMemoryAllocatorCopyFunction (mem, offset, size)
	GLBaseMemoryAllocatorCreateFunction (mem)
	GLBaseMemoryAllocatorDestroyFunction (mem)
	GLBaseMemoryAllocatorMapFunction (mem, info, maxsize)
	GLBaseMemoryAllocatorUnmapFunction (mem, info)
	GLContextThreadFunc (context, data)
	GLFilterRenderFunc (filter, in_tex, *user_data)
	GLFramebufferFunc (stuff)
	GLWindowCB (data)
	GLWindowResizeCB (data, width, height)

Details

GstGL.GLAllocationParamsCopyFunc(src, dest)

Parameters:

• src (GstGL.GLAllocationParams) – the source GstGL.GLAllocationParams to copy from

• dest (GstGL.GLAllocationParams) – the source GstGL.GLAllocationParams to copy

Copies the parameters from src into dest. The subclass must compose copy functions from the superclass.

GstGL.GLAllocationParamsFreeFunc(params)

Parameters:

params (object or None) – a GstGL.GLAllocationParams

Free any dynamically allocated data. The subclass must call the superclass’ free.

GstGL.GLAsyncDebugLogGetMessage(*user_data)

Parameters:

user_data (object or None) –

Return type:

str

GstGL.GLBaseMemoryAllocatorAllocFunction(allocator, params)

Parameters:

• allocator (GstGL.GLBaseMemoryAllocator) – a GstGL.GLBaseMemoryAllocator

• params (GstGL.GLAllocationParams) – the GstGL.GLAllocationParams to allocate the memory with

Returns:

a newly allocated GstGL.GLBaseMemory from allocator and params

Return type:

GstGL.GLBaseMemory or None

Note: not called with a GL context current

New in version 1.8.

GstGL.GLBaseMemoryAllocatorCopyFunction(mem, offset, size)

Parameters:

• mem (GstGL.GLBaseMemory) – a GstGL.GLBaseMemory

• offset (int) – the offset to copy from

• size (int) – the number of bytes to copy

Returns:

the newly copied GstGL.GLMemory or None

Return type:

GstGL.GLBaseMemory or None

Also see Gst.Memory.copy();

New in version 1.8.

GstGL.GLBaseMemoryAllocatorCreateFunction(mem)

Parameters:

mem (GstGL.GLBaseMemory) – a GstGL.GLBaseMemory

Returns:

whether the creation succeeded

Return type:

bool

As this virtual method is called with an OpenGL context current, use this function to allocate and OpenGL resources needed for your application

New in version 1.8.

GstGL.GLBaseMemoryAllocatorDestroyFunction(mem)

Parameters:

mem (GstGL.GLBaseMemory) – a GstGL.GLBaseMemory

Destroy any resources allocated throughout the lifetime of mem

New in version 1.8.

GstGL.GLBaseMemoryAllocatorMapFunction(mem, info, maxsize)

Parameters:

• mem (GstGL.GLBaseMemory) – a GstGL.GLBaseMemory

• info (Gst.MapInfo) – a Gst.MapInfo to map with

• maxsize (int) – the size to map

Returns:

the mapped pointer

Return type:

object or None

Also see Gst.Memory.map();

New in version 1.8.

GstGL.GLBaseMemoryAllocatorUnmapFunction(mem, info)

Parameters:

• mem (GstGL.GLBaseMemory) – a GstGL.GLBaseMemory

• info (Gst.MapInfo) – a Gst.MapInfo to map with

Also see Gst.Memory.unmap();

New in version 1.8.

GstGL.GLContextThreadFunc(context, data)

Parameters:

• context (GstGL.GLContext) – a GstGL.GLContext

• data (object or None) – user data

Represents a function to run in the GL thread with context and data

GstGL.GLFilterRenderFunc(filter, in_tex, *user_data)

Parameters:

• filter (GstGL.GLFilter) – the GstGL.GLFilter

• in_tex (GstGL.GLMemory) – the input GstGL.GLMemory to render

• user_data (object or None) – user data

Returns:

whether the render succeeded

Return type:

bool

New in version 1.10.

GstGL.GLFramebufferFunc(stuff)

Parameters:

stuff (object or None) – user data

Return type:

bool

callback definition for operating through a GstGL.GLFramebuffer object

GstGL.GLWindowCB(data)

Parameters:

data (object or None) –

GstGL.GLWindowResizeCB(data, width, height)

Parameters:

• data (object or None) –

• width (int) –

• height (int) –