A bypass encapsulator construct discussed in Run-Time Graph Reconfiguration Using Control Parameters is used to execute a kernel conditionally. The control
of the bypass is done through a run-time parameter: 0
for no bypass and 1 for bypass. In addition to the
control parameter, the external connections of a bypassed kernel or a graph are directed
to the external ports of the bypass construct itself. Internally, the bypass construct
is connected to the bypassed kernel or the graph automatically by the compiler. The
following example shows the required coding.
inout_port control;
bypass b;
kernel f, p, c;
f = kernel::create(filter);
...
b = bypass::create(f);
connect<parameter> (control, b.bp);
connect<window<128>> n1(p.out[0], b.in[0]);
connect<window<128>> n2(b.out[0], c.out[0]);
Note: For the bypass to work correctly, a one-to-one correspondence between the input and
output data ports is required, both in type and size.