Confusion about the implementation of common/multibuf.c lsmash-resize_maultiple_fuffers

[JakeWang-jw]

for( uint32_t i = multiple_buffer->number_of_buffers - 1; i ; i-- )
        memmove( temp + buffer_size, temp + i * multiple_buffer->buffer_size, multiple_buffer->buffer_size );

Why move all other buffers to the position of temp+buffer size？