Revision c7dbfcc7 gnuradio-core/src/lib/general/gr_skiphead.h

b/gnuradio-core/src/lib/general/gr_skiphead.h
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#include <gr_sync_block.h>
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#include <stddef.h>      // size_t
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class gr_skiphead;








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typedef boost::shared_ptr<gr_skiphead> gr_skiphead_sptr;








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/*!







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 * \brief skips the first N items, from then on copies items to the output







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 * \ingroup block







......




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 * Useful for building test cases and sources which have metadata or junk at the start







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 */







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class gr_skiphead : public gr_sync_block








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class gr_skiphead : public gr_block







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{







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  friend gr_block_sptr gr_make_skiphead (size_t sizeof_stream_item, int nitems);







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  gr_skiphead (size_t sizeof_stream_item, int nitems);








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  friend gr_skiphead_sptr gr_make_skiphead (size_t itemsize, size_t nitems_to_skip);








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  gr_skiphead (size_t itemsize, size_t nitems_to_skip);







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  int  d_nitems;







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  int  d_nskipped_items;








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  long long  		d_nitems_to_skip;








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  long long		d_nitems;		// total items seen







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 public:







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  int work (int noutput_items,







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     gr_vector_const_void_star &input_items,







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     gr_vector_void_star &output_items);








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  int general_work(int noutput_items,








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		   gr_vector_int &ninput_items,








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		   gr_vector_const_void_star &input_items,








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		   gr_vector_void_star &output_items);







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};







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gr_block_sptr







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gr_make_skiphead (size_t sizeof_stream_item, int nitems);








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gr_skiphead_sptr








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gr_make_skiphead (size_t itemsize, size_t nitems_to_skip);







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#endif /* INCLUDED_GR_SKIPHEAD_H */











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