Get the memory block at @idx in @buffer. The memory block stays valid until the memory block in @buffer is removed, replaced or merged, typically with any call that modifies the memory in @buffer.
an index
Return: the #GstMemory at @idx.
See Implementation
Get the memory block at @idx in @buffer. The memory block stays valid until the memory block in @buffer is removed, replaced or merged, typically with any call that modifies the memory in @buffer.