GNU Radio 3.7.1 C++ API
randomizer.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2006 Free Software Foundation, Inc.
00004  *
00005  * This file is part of GNU Radio
00006  *
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  *
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_ATSC_RANDOMIZER_H
00024 #define INCLUDED_ATSC_RANDOMIZER_H
00025 
00026 #include <gnuradio/atsc/api.h>
00027 #include <gnuradio/sync_block.h>
00028 #include <gnuradio/atsc/randomizer_impl.h>
00029 
00030 class atsc_randomizer;
00031 typedef boost::shared_ptr<atsc_randomizer> atsc_randomizer_sptr;
00032 
00033 ATSC_API atsc_randomizer_sptr atsc_make_randomizer();
00034 
00035 /*!
00036  * \brief "Whiten" incoming mpeg transport stream packets
00037  * \ingroup atsc
00038  *
00039  * input: atsc_mpeg_packet; output: atsc_mpeg_packet_no_sync
00040  */
00041 class ATSC_API atsc_randomizer : public gr::sync_block
00042 {
00043   friend ATSC_API atsc_randomizer_sptr atsc_make_randomizer();
00044 
00045   atsci_randomizer      d_rand;
00046   bool                  d_field2;       // user to init plinfo in output
00047   int                   d_segno;        // likewise
00048 
00049   atsc_randomizer();
00050 
00051 public:
00052   int work (int noutput_items,
00053             gr_vector_const_void_star &input_items,
00054             gr_vector_void_star &output_items);
00055 
00056   void reset();
00057 };
00058 
00059 
00060 #endif /* INCLUDED_ATSC_RANDOMIZER_H */