Framework: Directives

Detailed Description

Defines the Directives Interface.

Directives are messages given the OpenVX implementation that it must support. (These are required, i.e., non-optional.)

Functions
vx_status VX_API_CALL	vxDirective (vx_reference reference, vx_enum directive)
	Provides a generic API to give platform-specific directives to the implementations. More...

Function Documentation

vxDirective()

vx_status VX_API_CALL vxDirective	(	vx_reference	reference,
		vx_enum	directive
	)

Provides a generic API to give platform-specific directives to the implementations.

Parameters

[in]	reference	The reference to the object to set the directive on [R00469]. This could be vx_context, vx_graph, vx_node, vx_image, vx_array, or any other reference.
[in]	directive	The directive to set [R00470]. See List of allowed directives.

Returns

A The vx_status Constants value.

Return values

VX_SUCCESS	No errors; any other value indicates failure [R00471].
VX_ERROR_INVALID_REFERENCE	reference is not a valid vx_reference reference.
VX_ERROR_NOT_SUPPORTED	If the directive is not supported.

Note

The performance counter directives are only available for the reference vx_context [R00472]. Error VX_ERROR_NOT_SUPPORTED is returned when used with any other reference [R00473].