101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/* -*- c++ -*- */
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/*
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* @file
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* @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com>
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* @section LICENSE
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*
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* Gr-gsm is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* Gr-gsm is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gr-gsm; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_GSM_TCH_F_DECODER_IMPL_H
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#define INCLUDED_GSM_TCH_F_DECODER_IMPL_H
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#include "openbts/AmrCoder.h"
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#include "openbts/BitVector.h"
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#include "openbts/GSM503Tables.h"
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#include "openbts/GSM610Tables.h"
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#include "openbts/GSM660Tables.h"
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#include "openbts/ViterbiR204.h"
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#include <grgsm/decoding/tch_f_decoder.h>
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#define DATA_BLOCK_SIZE 184
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#define PARITY_SIZE 40
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#define FLUSH_BITS_SIZE 4
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#define PARITY_OUTPUT_SIZE (DATA_BLOCK_SIZE + PARITY_SIZE + FLUSH_BITS_SIZE)
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#define CONV_INPUT_SIZE PARITY_OUTPUT_SIZE
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#define CONV_SIZE (2 * CONV_INPUT_SIZE)
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#define BLOCKS 8
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#define iBLOCK_SIZE (CONV_SIZE / BLOCKS)
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namespace gr {
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namespace gsm {
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class tch_f_decoder_impl : public tch_f_decoder
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{
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private:
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unsigned int d_collected_bursts_num;
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unsigned short interleave_trans[CONV_SIZE];
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pmt::pmt_t d_bursts[8];
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enum tch_mode d_tch_mode;
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bool d_boundary_check;
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bool d_boundary_decode;
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bool d_header_sent;
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BitVector mU;
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BitVector mP;
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BitVector mD;
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BitVector mDP;
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BitVector mTCHU;
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BitVector mTCHD;
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BitVector mClass1A_d;
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SoftVector mC;
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SoftVector mClass1_c;
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SoftVector mClass2_c;
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SoftVector mTCHUC;
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Parity mBlockCoder;
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Parity mTCHParity;
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ViterbiR2O4 mVR204Coder;
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ViterbiBase *mViterbi;
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unsigned char iBLOCK[2*BLOCKS*iBLOCK_SIZE];
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unsigned char mAMRFrameHeader;
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const unsigned *mAMRBitOrder;
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const unsigned *mPuncture;
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unsigned mClass1ALth;
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unsigned mClass1BLth;
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unsigned mPunctureLth;
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uint8_t mAMRFrameLth;
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uint8_t mKd;
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void decode(pmt::pmt_t msg);
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void setCodingMode(tch_mode mode);
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public:
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tch_f_decoder_impl(tch_mode mode, bool boundary_check=false);
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~tch_f_decoder_impl();
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};
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} // namespace gsm
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} // namespace gr
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#endif /* INCLUDED_GSM_TCH_F_DECODER_IMPL_H */
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