/* -*- c++ -*- */ /* * Copyright 2002 Free Software Foundation, Inc. * * This file is part of GNU Radio * * GNU Radio is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * GNU Radio is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU Radio; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, * Boston, MA 02110-1301, USA. */ #include <cstdlib> #include <cstdio> #include <iostream> #include <stdexcept> #include <cmath> #include "quicksort_index.h" #include "interleaver.h" interleaver::interleaver() { d_K=0; d_INTER.resize(0); d_DEINTER.resize(0); } interleaver::interleaver(const interleaver &INTERLEAVER) { d_K=INTERLEAVER.K(); d_INTER=INTERLEAVER.INTER(); d_DEINTER=INTERLEAVER.DEINTER(); } interleaver::interleaver(int K, const std::vector<int> &INTER) { d_K=K; d_INTER=INTER; d_DEINTER.resize(d_K); // generate DEINTER table for(int i=0;i<d_K;i++) { d_DEINTER[d_INTER[i]]=i; } } //###################################################################### //# Read an INTERLEAVER specification from a file. //# Format (hopefully will become more flexible in the future...): //# K //# blank line //# list of space separated K integers from 0 to K-1 in appropriate order //# optional comments //###################################################################### interleaver::interleaver(const char *name) { FILE *interleaverfile; if((interleaverfile=fopen(name,"r"))==NULL) throw std::runtime_error ("file open error in interleaver()"); //printf("file open error in interleaver()\n"); fscanf(interleaverfile,"%d\n",&d_K); d_INTER.resize(d_K); d_DEINTER.resize(d_K); for(int i=0;i<d_K;i++) fscanf(interleaverfile,"%d",&(d_INTER[i])); // generate DEINTER table for(int i=0;i<d_K;i++) { d_DEINTER[d_INTER[i]]=i; } } //###################################################################### //# Generate a random interleaver //###################################################################### interleaver::interleaver(int K, unsigned int seed) { d_K=K; d_INTER.resize(d_K); d_DEINTER.resize(d_K); srand(seed); std::vector<int> tmp(d_K); for(int i=0;i<d_K;i++) { d_INTER[i]=i; tmp[i] = rand(); } //quicksort_index <int> (tmp,d_INTER,0,d_K-1); //got to resolve this... quicksort_index1 (tmp,d_INTER,0,d_K-1); // generate DEINTER table for(int i=0;i<d_K;i++) { d_DEINTER[d_INTER[i]]=i; } }