mmal_vc_shm.h File Reference

#include "mmal_types.h"

Go to the source code of this file.

Functions
MMAL_STATUS_T	mmal_vc_shm_init (void)
uint8_t *	mmal_vc_shm_alloc (uint32_t size)
MMAL_STATUS_T	mmal_vc_shm_free (uint8_t *mem)
uint8_t *	mmal_vc_shm_lock (uint8_t *mem, uint32_t workaround)
uint8_t *	mmal_vc_shm_unlock (uint8_t *mem, uint32_t *length, uint32_t workaround)

Detailed Description

Abstraction layer for MMAL VC shared memory. This API is only used by the MMAL VC component.

Definition in file mmal_vc_shm.h.

Function Documentation

mmal_vc_shm_alloc()

uint8_t* mmal_vc_shm_alloc

(

uint32_t

size

)

Allocate a shared memory buffer

mmal_vc_shm_free()

MMAL_STATUS_T mmal_vc_shm_free

(

uint8_t *

mem

)

Free a shared memory buffer

mmal_vc_shm_init()

MMAL_STATUS_T mmal_vc_shm_init

(

void

)

Initialise the shared memory system

mmal_vc_shm_lock()

uint8_t* mmal_vc_shm_lock	(	uint8_t *	mem,
		uint32_t	workaround
	)

Lock a shared memory buffer

mmal_vc_shm_unlock()

uint8_t* mmal_vc_shm_unlock	(	uint8_t *	mem,
		uint32_t *	length,
		uint32_t	workaround
	)

Unlock a shared memory buffer