mem.h File Reference

memory handling functions More...

#include <limits.h>
#include <stdint.h>
#include "attributes.h"
#include "error.h"
#include "avutil.h"

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Macros
#define	DECLARE_ALIGNED(n, t, v)   t v
#define	DECLARE_ASM_CONST(n, t, v)   static const t v
#define	av_malloc_attrib
#define	av_alloc_size(...)

Functions
void *	av_malloc (size_t size) av_malloc_attrib av_alloc_size(1)
	Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU).
	av_alloc_size (1, 2) static inline void *av_malloc_array(size_t nmemb
	Allocate a block of size * nmemb bytes with av_malloc().
return	av_malloc (nmemb *size)
void *	av_realloc (void *ptr, size_t size) av_alloc_size(2)
	Allocate or reallocate a block of memory.
void *	av_realloc_f (void *ptr, size_t nelem, size_t elsize)
	Allocate or reallocate a block of memory.
int	av_reallocp (void *ptr, size_t size)
	Allocate or reallocate a block of memory.
	av_alloc_size (2, 3) void *av_realloc_array(void *ptr
	Allocate or reallocate an array.
void	av_free (void *ptr)
	Free a memory block which has been allocated with av_malloc(z)() or av_realloc().
void *	av_mallocz (size_t size) av_malloc_attrib av_alloc_size(1)
	Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.
void *	av_calloc (size_t nmemb, size_t size) av_malloc_attrib
	Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.
return	av_mallocz (nmemb *size)
char *	av_strdup (const char *s) av_malloc_attrib
	Duplicate the string s.
void *	av_memdup (const void *p, size_t size)
	Duplicate the buffer p.
void	av_freep (void *ptr)
	Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer pointing to it to NULL.
void	av_dynarray_add (void *tab_ptr, int *nb_ptr, void *elem)
	Add an element to a dynamic array.
void *	av_dynarray2_add (void **tab_ptr, int *nb_ptr, size_t elem_size, const uint8_t *elem_data)
	Add an element of size elem_size to a dynamic array.
static int	av_size_mult (size_t a, size_t b, size_t *r)
	Multiply two size_t values checking for overflow.
void	av_max_alloc (size_t max)
	Set the maximum size that may me allocated in one block.
void	av_memcpy_backptr (uint8_t *dst, int back, int cnt)
	deliberately overlapping memcpy implementation

Variables
size_t	size
size_t	nmemb

Detailed Description

memory handling functions

Definition in file mem.h.