GNU Radio 3.5.1 C++ API
atsc_field_sync_demux.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 #ifndef INCLUDED_ATSC_FIELD_SYNC_DEMUX_H
00023 #define INCLUDED_ATSC_FIELD_SYNC_DEMUX_H
00024 
00025 #include <atsc_api.h>
00026 #include <gr_block.h>
00027 #include <atsc_types.h>
00028 
00029 class atsc_field_sync_demux;
00030 typedef boost::shared_ptr<atsc_field_sync_demux> atsc_field_sync_demux_sptr;
00031 
00032 ATSC_API atsc_field_sync_demux_sptr atsc_make_field_sync_demux();
00033 
00034 /*!
00035  * \brief ATSC Field Sync Demux
00036  *
00037  * This class accepts 1 stream of floats (data), and 1 stream of tags (syminfo). * It outputs one stream of atsc_soft_data_segment packets
00038  * \ingroup atsc
00039  *
00040  */
00041 class ATSC_API atsc_field_sync_demux : public gr_block
00042 {
00043   friend ATSC_API atsc_field_sync_demux_sptr atsc_make_field_sync_demux();
00044 
00045   atsc_field_sync_demux();
00046 
00047 public:
00048   void forecast (int noutput_items, gr_vector_int &ninput_items_required);
00049 
00050   int  general_work (int noutput_items,
00051                      gr_vector_int &ninput_items,
00052                      gr_vector_const_void_star &input_items,
00053                      gr_vector_void_star &output_items);
00054 
00055 
00056   int work (int noutput_items,
00057             gr_vector_const_void_star &input_items,
00058             gr_vector_void_star &output_items);
00059 
00060   void reset() { /* nop */ }
00061 
00062 protected:
00063   bool            d_locked;
00064   bool            d_in_field2;
00065   int             d_segment_number;
00066   gr_uint64       d_next_input;
00067   gr_uint64       d_lost_index;         // diagnostic fluff
00068 
00069   unsigned long long d_inputs0_index;   // for inputs[0].index
00070   unsigned long   d_inputs0_size;               // for inputs[0].size
00071   int             d_consume;
00072 
00073 };
00074 
00075 
00076 #endif /* INCLUDED_ATSC_FIELD_SYNC_DEMUX_H */