00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2005 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 2, 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., 59 Temple Place - Suite 330, 00020 * Boston, MA 02111-1307, USA. 00021 */ 00022 00023 #ifndef INCLUDED_GR_ALIGN_ON_SAMPLE_NUMBERS_SS_H 00024 #define INCLUDED_GR_ALIGN_ON_SAMPLE_NUMBERS_SS_H 00025 00026 #include <gr_block.h> 00027 00028 class gr_align_on_samplenumbers_ss; 00029 typedef boost::shared_ptr<gr_align_on_samplenumbers_ss> gr_align_on_samplenumbers_ss_sptr; 00030 00031 gr_align_on_samplenumbers_ss_sptr gr_make_align_on_samplenumbers_ss (int nchan=2, int align_interval=128); 00032 00051 class gr_align_on_samplenumbers_ss : public gr_block 00052 { 00053 int d_align_interval; 00054 int d_sample_counter; 00055 int d_nchan; 00056 bool d_in_presync; 00057 unsigned int d_ninputs; 00058 class align_state { 00059 public: 00060 unsigned int ucounter_end; 00061 unsigned int ucounter_begin; 00062 int diff; 00063 int diff_comp; 00064 int diff_end; 00065 int diff_comp_end; 00066 bool sync_found; 00067 bool sync_end_found; 00068 int ninput_items; 00069 int ninput_items_used; 00070 }; 00071 std::vector<align_state> d_state; 00072 00073 friend gr_align_on_samplenumbers_ss_sptr gr_make_align_on_samplenumbers_ss (int nchan,int align_interval); 00074 gr_align_on_samplenumbers_ss (int nchan,int align_interval); 00075 00076 public: 00077 ~gr_align_on_samplenumbers_ss(); 00078 bool check_topology (int ninputs, int noutputs); 00079 void forecast (int noutput_items, 00080 gr_vector_int &ninput_items_required); 00081 00082 int general_work (int noutput_items, 00083 gr_vector_int &ninput_items, 00084 gr_vector_const_void_star &input_items, 00085 gr_vector_void_star &output_items); 00086 }; 00087 00088 00089 #endif /* INCLUDED_GR_ALIGN_ON_SAMPLE_NUMBERS_SS_H */
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