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/* -*- c++ -*- */
#ifndef INCLUDED_GR_EXAMPLE_B_SQUARE_BB_H
#define INCLUDED_GR_EXAMPLE_B_SQUARE_BB_H
#include <gr_sync_block.h>
class gsm_run_bb;
/*
* We use boost::shared_ptr's instead of raw pointers for all access
* to gr_blocks (and many other data structures). The shared_ptr gets
* us transparent reference counting, which greatly simplifies storage
* management issues. This is especially helpful in our hybrid
* C++ / Python system.
*
* See http://www.boost.org/libs/smart_ptr/smart_ptr.htm
*
* As a convention, the _sptr suffix indicates a boost::shared_ptr
*/
typedef boost::shared_ptr<gsm_run_bb> gsm_run_bb_sptr;
/*!
* \brief Return a shared_ptr to a new instance of howto_square2_ff.
*
* To avoid accidental use of raw pointers, howto_square2_ff's
* constructor is private. howto_make_square2_ff is the public
* interface for creating new instances.
*/
gsm_run_bb_sptr gsm_make_run_bb ();
enum TimeslotConfig { TS_CONFIG_UNKNOWN, TS_CONFIG_CCH, TS_CONFIG_SDCCH8 };
struct timeslot_st
{
unsigned char data[102][156];
unsigned char n_max_frames;
TimeslotConfig config;
};
/*!
* \brief square2 a stream of floats.
* \ingroup block
*
* This uses the preferred technique: subclassing gr_sync_block.
*/
class gsm_run_bb : public gr_sync_block
{
private:
enum TMode { EModeFindFCCH, EModeFindSCH, EModeProcessSCH, EModeProcessL2 };
// The friend declaration allows howto_make_square2_ff to
// access the private constructor.
friend gsm_run_bb_sptr gsm_make_run_bb ();
gsm_run_bb (); // private constructor
int find_sch();
int process_sch();
int find_fch();
int handle_l2();
//int find_fch(const unsigned char *start, const unsigned char *end);
//int FillWorkingBuffer(const unsigned char *start, const unsigned char *end);
void ChangeSearchMode(TMode new_mode);
public:
~gsm_run_bb (); // public destructor
void forecast(int noutput_items, gr_vector_int &ninput_items_required);
// Where all the action really happens
int work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
private:
int ts_n;
unsigned char syncbits_match[64];
int bits_processed;
int fcch_zero_count;
unsigned char *burst_ptr;
// unsigned char burst[156];
struct timeslot_st timeslots[8];
TMode mode;
//unsigned char mode;
const unsigned char *iStart, *iPtr, *iEnd;
unsigned char iFchLastBit;
unsigned char iPhase;
int iFN;
};
#endif /* INCLUDED_HOWTO_SQUARE2_FF_H */
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