the #GstAllocator to use, or %NULL to use the default allocator
the size in bytes of the new buffer's data.
optional parameters
Return: a new #GstBuffer, or %NULL if the memory couldn't be allocated.
ConstructionException GTK+ fails to create the object.
Tries to create a newly allocated buffer with data of the given size and extra parameters from @allocator. If the requested amount of memory can't be allocated, %NULL will be returned. The allocated buffer memory is not cleared.
When @allocator is %NULL, the default memory allocator will be used.
Note that when @size == 0, the buffer will not have memory associated with it.
MT safe.