Hi Zswx,
ninput_items[0] is really the number of items that you can consume in a
work call (on input stream 0). It's usually > 1.
Best regards,
Marcus
On 07/09/2015 03:29 PM, zs wrote:
> Hi,
>
> Thank you in advance.I have a question about the "ninput_items".I
> find the meaning of it is "vector of items available on all input
> buffers".
>
> When I read the source code of "crc32_bb_impl.cc",I see the code
> below,
>
> "
> int
> 65 crc32_bb_impl::work (int noutput_items,
> 66 gr_vector_int &ninput_items,
> 67 gr_vector_const_void_star &input_items,
> 68 gr_vector_void_star &output_items)
> 69 {
> 70 const unsigned char *in = (const unsigned char *)
> input_items[0];
> 71 unsigned char *out = (unsigned char *) output_items[0];
> 72 long packet_length = ninput_items[0];
> "
> I think the ninput_items[0]=1,because the item input is 1 every
> times.But when I write the code
> "std::cout<<ninput_items[0]<<std::endl;",It display the
> packet_length.I think the ninput_items[0]=1 no matter what pack_length
> is.Why I'm wrong?
>
>
> Thank you.
> Best regards,
> zswx
>
>
>
>
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