GNU Radio 3.6.3 C++ API
digital_ofdm_mapper_bcv.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2006,2007,2011 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
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7  * GNU Radio is free software; you can redistribute it and/or modify
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22 
23 #ifndef INCLUDED_DIGITAL_OFDM_MAPPER_BCV_H
24 #define INCLUDED_DIGITAL_OFDM_MAPPER_BCV_H
25 
26 #include <digital_api.h>
27 #include <gr_sync_block.h>
28 #include <gr_message.h>
29 #include <gr_msg_queue.h>
30 
33 
35 digital_make_ofdm_mapper_bcv (const std::vector<gr_complex> &constellation, unsigned msgq_limit,
36  unsigned occupied_carriers, unsigned int fft_length);
37 
38 /*!
39  * \brief take a stream of bytes in and map to a vector of complex
40  * constellation points suitable for IFFT input to be used in an ofdm
41  * modulator. Abstract class must be subclassed with specific mapping.
42  * \ingroup modulation_blk
43  * \ingroup ofdm_blk
44  */
45 
47 {
49  digital_make_ofdm_mapper_bcv (const std::vector<gr_complex> &constellation, unsigned msgq_limit,
50  unsigned occupied_carriers, unsigned int fft_length);
51 protected:
52  digital_ofdm_mapper_bcv (const std::vector<gr_complex> &constellation, unsigned msgq_limit,
53  unsigned occupied_carriers, unsigned int fft_length);
54 
55  private:
56  std::vector<gr_complex> d_constellation;
57  gr_msg_queue_sptr d_msgq;
58  gr_message_sptr d_msg;
59  unsigned d_msg_offset;
60  bool d_eof;
61 
62  unsigned int d_occupied_carriers;
63  unsigned int d_fft_length;
64  unsigned int d_bit_offset;
65  int d_pending_flag;
66 
67  unsigned long d_nbits;
68  unsigned char d_msgbytes;
69 
70  unsigned char d_resid;
71  unsigned int d_nresid;
72 
73  std::vector<int> d_subcarrier_map;
74 
75  int randsym();
76 
77  public:
79 
80  gr_msg_queue_sptr msgq() const { return d_msgq; }
81 
82  int work(int noutput_items,
83  gr_vector_const_void_star &input_items,
84  gr_vector_void_star &output_items);
85 
86 };
87 
88 #endif