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Suppose I want to build a C++ application to drive GNU Radio, using
captured trace data -- so I don't need the USRP.
With the new top_block stuff we should be ready for this now, correct?
Here's a short program towards going down that path:
#include <gr_runtime_types.h>
#include <gr_top_block.h>
#include <gr_null_source.h>
#include <gr_null_sink.h>
int main()
{
gr_top_block_sptr tb = gr_make_top_block("topblock");
tb->connect(gr_make_null_source(sizeof(gr_complex)),
gr_make_null_sink(sizeof(gr_complex)));
tb->run();
}
A few questions/observations:
1) Since most blocks don't have public constructors, we have to indirect
through the _make_ friend functions. Is this what we want?
2) This example doesn't compile. There are two candidates for connect:
/usr/local/include/gnuradio/gr_hier_block2.h:61: note: candidates are:
void gr_hier_block2::connect(gr_basic_block_sptr)
/usr/local/include/gnuradio/gr_hier_block2.h:64: note:
void gr_hier_block2::connect(gr_basic_block_sptr, int,
gr_basic_block_sptr, int)
What does the first one do?? It only takes a single block...
The second one is presumably with ports? I will try that next. Can we
add a connect method that takes two blocks and assumes the ports are both 0?
Thoughts? Thanks,
Dan
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