Allocate a new buffer that wraps the given memory. @data must point to
@maxsize of memory, the wrapped buffer will have the region from @offset and
@size visible.
When the buffer is destroyed, @notify will be called with @user_data.
The prefix/padding must be filled with 0 if @flags contains
#GST_MEMORY_FLAG_ZERO_PREFIXED and #GST_MEMORY_FLAG_ZERO_PADDED respectively.
Allocate a new buffer that wraps the given memory. @data must point to @maxsize of memory, the wrapped buffer will have the region from @offset and @size visible.
When the buffer is destroyed, @notify will be called with @user_data.
The prefix/padding must be filled with 0 if @flags contains #GST_MEMORY_FLAG_ZERO_PREFIXED and #GST_MEMORY_FLAG_ZERO_PADDED respectively.