Re: [Discuss-gnuradio] Correct usage of gr::io_signature::makev

Hi Marcus,

Actually I din't do that since the reference code which I was following,
i.e.,

fll_band_edge_cc_impl.cc, has no such declaration in the corresponding
header fll_band_edge_cc_impl.h

Sumit

On 28/04/2018 17:28, Marcus Müller wrote:
> Hi Sumit,
>
> I don't see where `ios` is being declared constantly and/or statically
> before line 31? Does that happen in the header?
>
> Best regards,
> Marcus
> On Sat, 2018-04-28 at 16:51 +0200, Sumit Kumar wrote:
>> Hi,
>> In order to look for correct usage of gr::io_signature::makev, I
>> checked this example https://github.com/gnuradio/gnuradio/blob/master
>> /gr-digital/lib/fll_band_edge_cc_impl.cc
>> and found
>> static int ios[] = {sizeof(gr_complex), sizeof(gr_complex),
>> sizeof(gr_complex), sizeof(float)};
>> static std::vector<int> iosig(ios, ios+sizeof(ios)/sizeof(int));
>> and then use as io_signature::makev(1, 4, iosig))
>> Basically I have to use it in sync_short.cc from gr-ieee 80211 in
>> order to create more inputs.
>> But if I use the above two lines inside the class i.e.
>> sync_short_impl, I get lots of error. I have attached the file for
>> reference. Could you please suggest me correct usage. I can give more
>> information if needed.
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> ~~~~~~~
>> /home/john/myprefix/src/gr-ieee-80211/lib/sync_short.cc:31:84: error:
>> in-class initialization of static data member 'int
>> sync_short_impl::ios []' of incomplete type
>> tic int ios[] = {sizeof(gr_complex), sizeof(float), sizeof(float),
>> sizeof(float)};
>>
>> ^
>> /home/john/myprefix/src/gr-ieee-80211/lib/sync_short.cc:32:31: error:
>> 'ios' is not a type
>> static std::vector<int> iosig(ios, ios+sizeof(ios)/sizeof(int));
>> ^
>> /home/john/myprefix/src/gr-ieee-80211/lib/sync_short.cc:32:36: error:
>> 'ios' is not a type
>> static std::vector<int> iosig(ios, ios+sizeof(ios)/sizeof(int));
>> ^
>> /home/john/myprefix/src/gr-ieee-80211/lib/sync_short.cc:32:39: error:
>> expected ',' or '...' before '+' token
>> static std::vector<int> iosig(ios, ios+sizeof(ios)/sizeof(int));
>> ^
>> /home/john/myprefix/src/gr-ieee-80211/lib/sync_short.cc: In
>> constructor 'sync_short_impl::sync_short_impl(double, unsigned int,
>> bool, bool)':
>> /home/john/myprefix/src/gr-ieee-80211/lib/sync_short.cc:35:39: error:
>> no matching function for call to 'gr::io_signature::makev(int, int,
>> std::vector<int> (&)(int, int))'
>> gr::io_signature::makev(4, 4, iosig),
>> ^
>> In file included from
>> /home/john/myprefix/include/gnuradio/basic_block.h:30:0,
>> from
>> /home/john/myprefix/include/gnuradio/block.h:27,
>> from /home/john/myprefix/src/gr-ieee-
>> 80211/include/ieee802-11/sync_short.h:21,
>> from /home/john/myprefix/src/gr-ieee-
>> 80211/lib/sync_short.cc:17:
>> /home/john/myprefix/include/gnuradio/io_signature.h:100:17: note:
>> candidate: static gr::io_signature::sptr gr::io_signature::makev(int,
>> int, const std::vector<int>&)
>> static sptr makev(int min_streams, int max_streams,
>> ^
>> /home/john/myprefix/include/gnuradio/io_signature.h:100:17: note:
>> no known conversion for argument 3 from 'std::vector<int>(int, int)'
>> to 'const std::vector<int>&'
>> lib/CMakeFiles/gnuradio-ieee802_11.dir/build.make:584: recipe for
>> target 'lib/CMakeFiles/gnuradio-ieee802_11.dir/sync_short.cc.o'
>> failed
>> make[2]: *** [lib/CMakeFiles/gnuradio-ieee802_11.dir/sync_short.cc.o]
>> Error 1
>> CMakeFiles/Makefile2:200: recipe for target 'lib/CMakeFiles/gnuradio-
>> ieee802_11.dir/all' failed
>> make[1]: *** [lib/CMakeFiles/gnuradio-ieee802_11.dir/all] Error 2
>> Makefile:138: recipe for target 'all' failed
>> make: *** [all] Error 2
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> Discuss-gnuradio@gnu.org
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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