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/*
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
2011, 2012 Her Majesty the Queen in Right of Canada (Communications
Research Center Canada)
Copyright (C) 2015
Matthias P. Braendli, matthias.braendli@mpb.li
Implementation of the FIG carousel to schedule the FIGs into the
FIBs.
*/
/*
This file is part of ODR-DabMux.
ODR-DabMux 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 of the
License, or (at your option) any later version.
ODR-DabMux 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 ODR-DabMux. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Log.h"
#include "fig/FIGCarousel.h"
#include <boost/format.hpp>
#include <iostream>
#include <deque>
namespace FIC {
/**************** FIGCarouselElement ****************/
void FIGCarouselElement::reduce_deadline()
{
deadline -= 24; //ms
if (deadline < 0) {
etiLog.level(warn) << "FIG " << fig->name() <<
" has negative scheduling deadline";
}
}
void FIGCarouselElement::increase_deadline()
{
deadline = rate_increment_ms(fig->repetition_rate());
}
/**************** FIGCarousel *****************/
FIGCarousel::FIGCarousel(boost::shared_ptr<dabEnsemble> ensemble) :
m_rti(ensemble),
m_fig0_0(&m_rti),
m_fig0_1(&m_rti),
m_fig0_2(&m_rti),
m_fig0_3(&m_rti),
m_fig0_17(&m_rti),
m_fig0_8(&m_rti),
m_fig1_0(&m_rti),
m_fig0_13(&m_rti),
m_fig0_10(&m_rti),
m_fig0_9(&m_rti),
m_fig1_1(&m_rti),
m_fig1_4(&m_rti),
m_fig1_5(&m_rti)
{
load_and_allocate(m_fig0_0, 0);
load_and_allocate(m_fig0_1, 0);
load_and_allocate(m_fig0_2, 0);
load_and_allocate(m_fig0_3, 0);
load_and_allocate(m_fig0_17, 0);
load_and_allocate(m_fig0_8, 1);
load_and_allocate(m_fig1_0, 1);
load_and_allocate(m_fig0_13, 1);
load_and_allocate(m_fig0_10, 1);
load_and_allocate(m_fig0_9, 1);
load_and_allocate(m_fig1_1, 2);
load_and_allocate(m_fig1_5, 2);
load_and_allocate(m_fig1_4, 2);
}
void FIGCarousel::load_and_allocate(IFIG& fig, int fib)
{
int type = fig.figtype();
int extension = fig.figextension();
m_figs_available[std::make_pair(type, extension)] = &fig;
allocate_fig_to_fib(type, extension, fib);
}
void FIGCarousel::update(unsigned long currentFrame, time_t dabTime)
{
m_rti.currentFrame = currentFrame;
m_rti.date = dabTime;
}
void FIGCarousel::allocate_fig_to_fib(int figtype, int extension, int fib)
{
if (fib < 0 or fib >= 3) {
throw std::out_of_range("Invalid FIB");
}
auto fig = m_figs_available.find(std::make_pair(figtype, extension));
if (fig != m_figs_available.end()) {
FIGCarouselElement el;
el.fig = fig->second;
el.deadline = 0;
el.increase_deadline();
m_fibs[fib].push_back(el);
}
else {
std::stringstream ss;
ss << "No FIG " << figtype << "/" << extension << " available";
throw std::runtime_error(ss.str());
}
}
void dumpfib(const uint8_t *buf, size_t bufsize) {
std::cerr << "FIB ";
for (size_t i = 0; i < bufsize; i++) {
std::cerr << boost::format("%02x ") % (unsigned int)buf[i];
}
std::cerr << std::endl;
}
size_t FIGCarousel::carousel(
size_t fib,
uint8_t *buf,
const size_t bufsize,
int framephase)
{
uint8_t *pbuf = buf;
std::list<FIGCarouselElement>& figs = m_fibs[fib];
std::deque<FIGCarouselElement*> sorted_figs;
/* Decrement all deadlines */
for (auto& fig_el : figs) {
fig_el.reduce_deadline();
sorted_figs.push_back(&fig_el);
}
/* Sort the FIGs in the FIB according to their deadline */
std::sort(sorted_figs.begin(), sorted_figs.end(),
[]( const FIGCarouselElement* left,
const FIGCarouselElement* right) {
return left->deadline < right->deadline;
});
/* Carousel debugging help
std::cerr << " Sorted figs in FIB" << fib << ":" << std::endl;
for (auto& fig_el : sorted_figs) {
std::cerr << " " << fig_el->fig->name() <<
" d:" << fig_el->deadline << std::endl;
}
// */
/* Data structure to carry FIB */
size_t available_size = bufsize;
/* Take special care for FIG0/0 */
auto fig0_0 = find_if(sorted_figs.begin(), sorted_figs.end(),
[](const FIGCarouselElement* f) {
return f->fig->repetition_rate() == FIG_rate::FIG0_0;
});
if (fig0_0 != sorted_figs.end()) {
sorted_figs.erase(fig0_0);
if (framephase == 0) { // TODO check for all TM
FillStatus status = (*fig0_0)->fig->fill(pbuf, available_size);
size_t written = status.num_bytes_written;
if (written > 0) {
available_size -= written;
pbuf += written;
}
else {
throw std::runtime_error("Failed to write FIG0/0");
}
if (status.complete_fig_transmitted) {
(*fig0_0)->increase_deadline();
}
}
}
/* Fill the FIB with the FIGs, taking the earliest deadline first */
while (available_size > 0 and not sorted_figs.empty()) {
auto fig_el = sorted_figs[0];
FillStatus status = fig_el->fig->fill(pbuf, available_size);
size_t written = status.num_bytes_written;
if (written > 0) {
available_size -= written;
pbuf += written;
}
if (status.complete_fig_transmitted) {
fig_el->increase_deadline();
}
sorted_figs.pop_front();
}
//dumpfib(buf, bufsize);
return bufsize - available_size;
}
} // namespace FIC
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