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 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_GR_ALIGN_ON_SAMPLE_NUMBERS_SS_H 00024 #define INCLUDED_GR_ALIGN_ON_SAMPLE_NUMBERS_SS_H 00025 00026 #include <gr_block.h> 00027 00045 class gr_align_on_samplenumbers_ss; 00046 typedef boost::shared_ptr<gr_align_on_samplenumbers_ss> gr_align_on_samplenumbers_ss_sptr; 00047 00048 gr_align_on_samplenumbers_ss_sptr gr_make_align_on_samplenumbers_ss (int nchan=2, int align_interval=128); 00049 00050 00051 00052 00053 class gr_align_on_samplenumbers_ss : public gr_block 00054 { 00055 int d_align_interval; 00056 int d_sample_counter; 00057 int d_nchan; 00058 bool d_in_presync; 00059 unsigned int d_ninputs; 00060 class align_state { 00061 public: 00062 unsigned int ucounter_end; 00063 unsigned int ucounter_begin; 00064 int diff; 00065 int diff_comp; 00066 int diff_end; 00067 int diff_comp_end; 00068 bool sync_found; 00069 bool sync_end_found; 00070 int ninput_items; 00071 int ninput_items_used; 00072 }; 00073 std::vector<align_state> d_state; 00074 00075 friend gr_align_on_samplenumbers_ss_sptr gr_make_align_on_samplenumbers_ss (int nchan,int align_interval); 00076 gr_align_on_samplenumbers_ss (int nchan,int align_interval); 00077 00078 public: 00079 ~gr_align_on_samplenumbers_ss(); 00080 bool check_topology (int ninputs, int noutputs); 00081 void forecast (int noutput_items, 00082 gr_vector_int &ninput_items_required); 00083 00084 int general_work (int noutput_items, 00085 gr_vector_int &ninput_items, 00086 gr_vector_const_void_star &input_items, 00087 gr_vector_void_star &output_items); 00088 }; 00089 00090 00091 #endif /* INCLUDED_GR_ALIGN_ON_SAMPLE_NUMBERS_SS_H */