Allocate a memory block with alignment suitable for all memory accesses
(including vectors if available on the CPU).
@param size Size in bytes for the memory block to be allocated
@return Pointer to the allocated block, or NULL if the block cannot
be allocated
@see av_mallocz()
Allocate a memory block with alignment suitable for all memory accesses (including vectors if available on the CPU).
@param size Size in bytes for the memory block to be allocated @return Pointer to the allocated block, or NULL if the block cannot be allocated @see av_mallocz()