> In The General Work Function I wanted to create 4 outputs this way:
>
> int
> Layer_Mapper_Transmit_Diversity_cc_impl::general_work (int
> noutput_items,
> gr_vector_int &ninput_items,
> gr_vector_const_void_star &input_items,
> gr_vector_void_star &output_items)
> {
> const float **in = (const float **) input_items[0];
> float **out0 = (float **) output_items[0];
> float **out1 = (float **) output_items[1];
> float **out2 = (float **) output_items[2];
> float **out3 = (float **) output_items[3];
>
> Because the inputs and outputs are arrays so I declared them as matrices ,
> does GnuRadio accept this ?
>
>
So input_items[0] or output_items[1] for example, is a pointer to a
linear chunk of memory. Casting it to a float ** might imply that its an
array of pointers which each point to a linear row/column of a matrix.
But that isnt the case, so things will likely segfault.
You could cast the pointer to a C matrix with the double brackets and
the fixed widths like a [64][4] for example, I think C will map those
double bracketed access nicely to a linear chunk of memory.
I hope that helps!
-josh
>
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