Allocate a memory block for an array with av_malloc().
The allocated memory will have size size * nmemb bytes.
@param nmemb Number of element
@param size Size of a single element
@return Pointer to the allocated block, or NULL if the block cannot
be allocated
@see av_malloc()
Allocate a memory block for an array with av_malloc().
The allocated memory will have size size * nmemb bytes.
@param nmemb Number of element @param size Size of a single element @return Pointer to the allocated block, or NULL if the block cannot be allocated @see av_malloc()