MMAL_COMPONENT_T Struct Reference

#include <mmal_component.h>

Public Attributes
struct MMAL_COMPONENT_PRIVATE_T *	priv
struct MMAL_COMPONENT_USERDATA_T *	userdata
const char *	name
uint32_t	is_enabled
MMAL_PORT_T *	control
uint32_t	input_num
MMAL_PORT_T **	input
uint32_t	output_num
MMAL_PORT_T **	output
uint32_t	clock_num
MMAL_PORT_T **	clock
uint32_t	port_num
MMAL_PORT_T **	port
uint32_t	id

Detailed Description

Definition of a component.

Member Data Documentation

MMAL_PORT_T** MMAL_COMPONENT_T::clock

Array of clock ports

uint32_t MMAL_COMPONENT_T::clock_num

Number of clock ports

MMAL_PORT_T* MMAL_COMPONENT_T::control

All components expose a control port. The control port is used by clients to set / get parameters that are global to the component. It is also used to receive events, which again are global to the component. To be able to receive events, the client needs to enable and register a callback on the control port.

uint32_t MMAL_COMPONENT_T::id

Uniquely identifies the component's instance within the MMAL context / process. For debugging.

MMAL_PORT_T** MMAL_COMPONENT_T::input

Array of input ports

uint32_t MMAL_COMPONENT_T::input_num

Number of input ports

uint32_t MMAL_COMPONENT_T::is_enabled

Specifies whether the component is enabled or not

const char* MMAL_COMPONENT_T::name

Component name

MMAL_PORT_T** MMAL_COMPONENT_T::output

Array of output ports

uint32_t MMAL_COMPONENT_T::output_num

Number of output ports

MMAL_PORT_T** MMAL_COMPONENT_T::port

Array of all the ports (control/input/output/clock)

uint32_t MMAL_COMPONENT_T::port_num

Total number of ports

struct MMAL_COMPONENT_PRIVATE_T* MMAL_COMPONENT_T::priv

Pointer to the private data of the module in use

struct MMAL_COMPONENT_USERDATA_T* MMAL_COMPONENT_T::userdata

Pointer to private data of the client

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The documentation for this struct was generated from the following file:

• /Volumes/WORK_IN_PROGRESS/RASPBERRY_PI/github/firmware-master/opt/vc/include/interface/mmal/mmal_component.h