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/*
Copyright (C) 2014 CSP Innovazione nelle ICT s.c.a r.l. (http://rd.csp.it/)
Copyright (C) 2014, 2015 Matthias P. Braendli (http://opendigitalradio.org)
Copyright (C) 2015-2019 Stefan Pöschel (http://opendigitalradio.org)
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*!
\file odr-padenc.h
\brief Generate PAD data for MOT Slideshow and DLS
\author Sergio Sagliocco <sergio.sagliocco@csp.it>
\author Matthias P. Braendli <matthias@mpb.li>
\author Stefan Pöschel <odr@basicmaster.de>
*/
#include "common.h"
#include <atomic>
#include <stdlib.h>
#include <signal.h>
#include <string>
#include <thread>
#include <vector>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <getopt.h>
#include <unistd.h>
#include "pad_common.h"
#include "dls.h"
#include "sls.h"
using std::chrono::steady_clock;
// --- PadEncoderOptions -----------------------------------------------------------------
struct PadEncoderOptions {
size_t padlen;
bool erase_after_tx;
int slide_interval;
int frame_dur; // uniform PAD encoder only
int label_interval; // uniform PAD encoder only
int label_insertion; // uniform PAD encoder only
int init_burst; // uniform PAD encoder only
int xpad_interval; // uniform PAD encoder only
size_t max_slide_size;
bool raw_slides;
DL_PARAMS dl_params;
const char* sls_dir;
const char* output;
std::vector<std::string> dls_files;
const char* item_state_file;
PadEncoderOptions() :
padlen(58),
erase_after_tx(false),
slide_interval(10),
frame_dur(0),
label_interval(12),
label_insertion(1200),
init_burst(12),
xpad_interval(1),
max_slide_size(SLSEncoder::MAXSLIDESIZE_SIMPLE),
raw_slides(false),
sls_dir(NULL),
output("/tmp/pad.fifo"),
item_state_file(NULL)
{}
bool DLSEnabled() {return !dls_files.empty();}
bool SLSEnabled() {return sls_dir;}
};
// --- PadEncoder -----------------------------------------------------------------
class PadEncoder {
protected:
PadEncoderOptions options;
PADPacketizer pad_packetizer;
DLSEncoder dls_encoder;
SLSEncoder sls_encoder;
SlideStore slides;
bool slides_success;
int curr_dls_file;
int output_fd;
steady_clock::time_point run_timeline;
std::atomic<bool> do_exit;
PadEncoder(PadEncoderOptions options) :
options(options),
pad_packetizer(PADPacketizer(options.padlen)),
dls_encoder(DLSEncoder(&pad_packetizer)),
sls_encoder(SLSEncoder(&pad_packetizer)),
slides_success(false),
curr_dls_file(0),
output_fd(-1),
run_timeline(steady_clock::now()),
do_exit(false)
{}
virtual int Encode() = 0;
int EncodeSlide(bool skip_if_already_queued);
int EncodeLabel(bool skip_if_already_queued);
static int CheckRereadFile(const std::string& type, const std::string& path);
public:
virtual ~PadEncoder() {}
int Main();
void DoExit() {do_exit = true;}
};
// --- BurstPadEncoder -----------------------------------------------------------------
class BurstPadEncoder : public PadEncoder {
private:
static const int DLS_REPETITION_WHILE_SLS;
int Encode();
public:
BurstPadEncoder(PadEncoderOptions options) : PadEncoder(options) {}
};
// --- UniformPadEncoder -----------------------------------------------------------------
class UniformPadEncoder : public PadEncoder {
private:
steady_clock::time_point pad_timeline;
steady_clock::time_point next_slide;
steady_clock::time_point next_label;
steady_clock::time_point next_label_insertion;
size_t xpad_interval_counter;
int Encode();
public:
UniformPadEncoder(PadEncoderOptions options);
};
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