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/* -*- c++ -*- */
/*
* @file
* @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com>
* @section LICENSE
*
* Gr-gsm 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 3, or (at your option)
* any later version.
*
* Gr-gsm 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 gr-gsm; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GSM_TCH_F_DECODER_IMPL_H
#define INCLUDED_GSM_TCH_F_DECODER_IMPL_H
#include "openbts/AmrCoder.h"
#include "openbts/BitVector.h"
#include "openbts/GSM503Tables.h"
#include "openbts/GSM610Tables.h"
#include "openbts/GSM660Tables.h"
#include "openbts/ViterbiR204.h"
#include <grgsm/decoding/tch_f_decoder.h>
#define DATA_BLOCK_SIZE 184
#define PARITY_SIZE 40
#define FLUSH_BITS_SIZE 4
#define PARITY_OUTPUT_SIZE (DATA_BLOCK_SIZE + PARITY_SIZE + FLUSH_BITS_SIZE)
#define CONV_INPUT_SIZE PARITY_OUTPUT_SIZE
#define CONV_SIZE (2 * CONV_INPUT_SIZE)
#define BLOCKS 8
#define iBLOCK_SIZE (CONV_SIZE / BLOCKS)
namespace gr {
namespace gsm {
class tch_f_decoder_impl : public tch_f_decoder
{
private:
unsigned int d_collected_bursts_num;
unsigned short interleave_trans[CONV_SIZE];
pmt::pmt_t d_bursts[8];
enum tch_mode d_tch_mode;
bool d_boundary_check;
bool d_boundary_decode;
bool d_header_sent;
BitVector mU;
BitVector mP;
BitVector mD;
BitVector mDP;
BitVector mTCHU;
BitVector mTCHD;
BitVector mClass1A_d;
SoftVector mC;
SoftVector mClass1_c;
SoftVector mClass2_c;
SoftVector mTCHUC;
Parity mBlockCoder;
Parity mTCHParity;
ViterbiR2O4 mVR204Coder;
ViterbiBase *mViterbi;
unsigned char iBLOCK[2*BLOCKS*iBLOCK_SIZE];
unsigned char mAMRFrameHeader;
const unsigned *mAMRBitOrder;
const unsigned *mPuncture;
unsigned mClass1ALth;
unsigned mClass1BLth;
unsigned mPunctureLth;
uint8_t mAMRFrameLth;
uint8_t mKd;
void decode(pmt::pmt_t msg);
void setCodingMode(tch_mode mode);
public:
tch_f_decoder_impl(tch_mode mode, bool boundary_check=false);
~tch_f_decoder_impl();
};
} // namespace gsm
} // namespace gr
#endif /* INCLUDED_GSM_TCH_F_DECODER_IMPL_H */
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