Your error message states that the issue isn't your _impl function, but rather the fact that you haven't implemented 'work'
cannot allocate an object of abstract type 'asrp_fec_encoder' > because the following virtual functions are pure within 'asrp_fec_encoder': > /usr/local/include/gnuradio/block.h:236:17: note: virtual int > gnuradio::block::work(const InputItems&, const OutputItems&) > asrp_fec_encoder.cc: In constructor > 'asrp_fec_encoder::asrp_fec_encoder(const char*)': > You may find reading up on virtual inheritance helpful: http://www.cplusplus.com/doc/tutorial/polymorphism/ http://www.learncpp.com/cpp-tutorial/118-virtual-base-classes/ Cheers, Ben > > > Regards, > > Jose > > > > > On Wed, Oct 3, 2012 at 3:03 PM, Jose Torres Diaz < > torresdiaz.j...@gmail.com> wrote: > >> Hi, >> >> I'm modifying the block BLOB_TO_STREAM and I would like to pass a pointer >> to that function. The original file (blob_to_stream.cc) is like this: >> >> class blob_to_stream_impl : public blob_to_stream{ >> public: >> blob_to_stream_impl(const size_t item_size): >> block( >> "blob_to_stream", >> gr_make_io_signature(0, 0, 0), >> gr_make_io_signature(1, 1, item_size), >> msg_signature(true, 0) >> ), >> _item_size(item_size) >> { >> _offset = 0; >> } >> >> //Work function here >> >> private: >> const size_t _item_size; >> gr_tag_t _msg; >> size_t _offset; >> }; >> >> My new version, it will be something like this: >> >> class blob_to_stream_impl : public blob_to_stream{ >> public: >> blob_to_stream_impl(const size_t *file): >> block( >> "blob_to_stream", >> gr_make_io_signature(0, 0, 0), >> gr_make_io_signature(1, 1, item_size), >> msg_signature(true, 0) >> ), >> >> { >> _offset = 0; >> } >> >> But my question is, how can I initialize the pointer *file here?. I tried >> different methods, but I always get an error. >> >> Any comment will be highly appreciate it, >> >> Cheers, >> >> Jose >> > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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