baz_burster.h
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/* -*- c++ -*- */
/*
* Copyright 2004 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 3, 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.
*/
/*
* gr-baz by Balint Seeber (http://spench.net/contact)
* Information, documentation & samples: http://wiki.spench.net/wiki/gr-baz
*/
#ifndef INCLUDED_BAZ_BURSTER_H
#define INCLUDED_BAZ_BURSTER_H
//#include <sys/time.h>
#include <boost/thread/thread.hpp>
#include <string>
#include <vector>
#include <map>
#include <gnuradio/sync_block.h>
#include <gnuradio/msg_queue.h>
#include <pmt/pmt.h>
#include "baz_burster_config.h"
class BAZ_API baz_burster;
/*
* 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<baz_burster> baz_burster_sptr;
/*!
* \brief Return a shared_ptr to a new instance of baz_burster.
*
* To avoid accidental use of raw pointers, baz_burster's
* constructor is private. baz_make_burster is the public
* interface for creating new instances.
*/
BAZ_API baz_burster_sptr baz_make_burster (const baz_burster_config& config);
/*!
* \brief burster a stream of floats.
* \ingroup block
*
* This uses the preferred technique: subclassing gr::sync_block.
*/
class BAZ_API baz_burster : public gr::block
{
private:
friend BAZ_API baz_burster_sptr baz_make_burster (const baz_burster_config& config);
baz_burster (const baz_burster_config& config); // private constructor
baz_burster_config d_config;
typedef struct burst_time_t
{
uint64_t seconds;
double fractional_seconds;
uint64_t sample_offset;
int sample_rate;
} burst_time;
inline static burst_time burst_time_absorb_whole_samples(const burst_time& t)
{
burst_time _t(t);
uint64_t s = t.sample_offset / t.sample_rate;
_t.seconds += s;
_t.sample_offset -= (s * t.sample_rate);
return _t;
}
inline static burst_time burst_time_absorb_samples(const burst_time& t)
{
burst_time _t(t);
double d = (double)t.sample_offset / (double)t.sample_rate;
_t.seconds += (int)d;
_t.fractional_seconds += (d - (int)d);
_t.sample_offset = 0;
return _t;
}
inline static burst_time burst_time_difference(const burst_time& t1, const burst_time& t2, bool relative_to_second = true)
{
burst_time t;
if ((t1.sample_rate == t2.sample_rate)/* && (t1.seconds == t2.seconds) && (t1.fractional_seconds == t2.fractional_seconds)*/)
{
t.sample_rate = t1.sample_rate;
t.seconds = 0;
t.fractional_seconds = 0;
t.sample_offset =
(t1.sample_rate * (t1.seconds - t2.seconds)) +
(uint64_t)((double)t1.sample_rate * (t1.fractional_seconds - t2.fractional_seconds)) +
(t1.sample_offset - t2.sample_offset);
return t;
}
if ((t1.sample_rate != t2.sample_rate) && ((t1.sample_offset > 0) || (t2.sample_offset > 0)))
{
return burst_time_difference(burst_time_absorb_samples(t1), burst_time_absorb_samples(t2));
}
t.seconds = 0;
t.fractional_seconds = 0;
if (relative_to_second)
{
t.sample_rate = t2.sample_rate;
}
else
{
t.sample_rate = t1.sample_rate;
}
t.sample_offset = (t.sample_rate * (t1.seconds - t2.seconds)) + (uint64_t)((double)t.sample_rate * (t1.fractional_seconds - t2.fractional_seconds));
return t;
}
bool send_pending_msg(void);
void set_burst_length(int length);
//////////////////// ZERO
union {
char d_dummy_zero_first;
//uint64_t d_last_time_seconds;
burst_time d_stream_time;
};
//double d_last_time_fractional_seconds;
burst_time d_last_burst_time;
int d_burst_message_sample_index;
//bool d_msg_ready;
bool d_in_burst;
int d_burst_count; // Incremented when new one is started (not when it is transmitted)
bool d_last_burst_system_time_valid;
int d_time_tags;
uint64_t d_current_burst_length;
char* d_message_buffer;
int d_message_buffer_length;
int d_system_time_ticks_per_second;
// Next must come last
char d_dummy_zero_last;
////////////////////
//uint64_t d_last_burst_sample_time;
//double d_last_burst_time;
boost::system_time d_system_time;
boost::system_time d_last_burst_system_time;
//uint64_t d_samples_since_last_time_tag;
//gr::message::sptr d_current_msg;
gr::message::sptr d_pending_msg;
std::vector<gr::tag_t> d_incoming_time_tags;
public:
~baz_burster (); // public destructor
//
void forecast(int noutput_items, gr_vector_int &ninput_items_required);
int general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items);
};
#endif /* INCLUDED_BAZ_BURSTER_H */
BAZ_API
#define BAZ_API
Definition api.h:19
baz_make_burster
BAZ_API baz_burster_sptr baz_make_burster(const baz_burster_config &config)
Return a shared_ptr to a new instance of baz_burster.
baz_burster_config.h
baz_burster
burster a stream of floats.
Definition baz_burster.h:75
baz_burster::general_work
int general_work(int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
baz_burster::d_dummy_zero_first
char d_dummy_zero_first
Definition baz_burster.h:152
baz_burster::d_stream_time
burst_time d_stream_time
Definition baz_burster.h:154
baz_burster::baz_make_burster
friend BAZ_API baz_burster_sptr baz_make_burster(const baz_burster_config &config)
Return a shared_ptr to a new instance of baz_burster.
baz_burster::~baz_burster
~baz_burster()
baz_burster::forecast
void forecast(int noutput_items, gr_vector_int &ninput_items_required)
baz_burster_config_t
Definition baz_burster_config.h:32