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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, 2016, 2017 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 dls.h
\brief Dynamic Label (DL) related code
\author Sergio Sagliocco <sergio.sagliocco@csp.it>
\author Matthias P. Braendli <matthias@mpb.li>
\author Stefan Pöschel <odr@basicmaster.de>
*/
#ifndef DLS_H_
#define DLS_H_
#include <fstream>
#include <iostream>
#include "common.h"
#include "pad_common.h"
#include "charset.h"
// DL/DL+ commands
enum {
DLS_CMD_REMOVE_LABEL = 0x1 /* 0b0001 */,
DLS_CMD_DL_PLUS = 0x2 /* 0b0010 */
};
enum {
DL_PLUS_CMD_TAGS = 0x0 /* 0b0000 */
};
// --- DL_PARAMS -----------------------------------------------------------------
struct DL_PARAMS {
DABCharset charset;
bool raw_dls;
bool remove_dls;
DL_PARAMS() : charset(DABCharset::UTF8), raw_dls(false), remove_dls(false) {}
};
// --- DL_PLUS_TAG -----------------------------------------------------------------
struct DL_PLUS_TAG {
int content_type;
int start_marker;
int length_marker;
DL_PLUS_TAG() :
content_type(0), // = DUMMY
start_marker(0),
length_marker(0)
{}
DL_PLUS_TAG(int content_type, int start_marker, int length_marker) :
content_type(content_type),
start_marker(start_marker),
length_marker(length_marker)
{}
bool operator==(const DL_PLUS_TAG& other) const {
return
content_type == other.content_type &&
start_marker == other.start_marker &&
length_marker == other.length_marker;
}
bool operator!=(const DL_PLUS_TAG& other) const {
return !(*this == other);
}
};
typedef std::vector<DL_PLUS_TAG> dl_plus_tags_t;
// --- DL_STATE -----------------------------------------------------------------
struct DL_STATE {
std::string dl_text;
bool dl_plus_enabled;
bool dl_plus_item_toggle;
bool dl_plus_item_running;
dl_plus_tags_t dl_plus_tags;
DL_STATE() :
dl_plus_enabled(false),
dl_plus_item_toggle(false),
dl_plus_item_running(false)
{}
bool operator==(const DL_STATE& other) const {
if (dl_text != other.dl_text)
return false;
if (dl_plus_enabled != other.dl_plus_enabled)
return false;
if (dl_plus_enabled) {
if (dl_plus_item_toggle != other.dl_plus_item_toggle)
return false;
if (dl_plus_item_running != other.dl_plus_item_running)
return false;
if (dl_plus_tags != other.dl_plus_tags)
return false;
}
return true;
}
bool operator!=(const DL_STATE& other) const {
return !(*this == other);
}
};
// --- DLSEncoder -----------------------------------------------------------------
class DLSEncoder {
private:
static const size_t MAXDLS;
static const size_t DLS_SEG_LEN_PREFIX;
static const size_t DLS_SEG_LEN_CHAR_MAX;
static const std::string DL_PARAMS_OPEN;
static const std::string DL_PARAMS_CLOSE;
DATA_GROUP* createDynamicLabelCommand(uint8_t command);
DATA_GROUP* createDynamicLabelPlus(const DL_STATE& dl_state);
bool parse_dl_param_bool(const std::string &key, const std::string &value, bool &target);
bool parse_dl_param_int_dl_plus_tag(const std::string &key, const std::string &value, int &target);
void parse_dl_params(std::ifstream &dls_fstream, DL_STATE &dl_state);
int dls_count(const std::string& text);
DATA_GROUP* dls_get(const std::string& text, DABCharset charset, int seg_index);
void prepend_dl_dgs(const DL_STATE& dl_state, DABCharset charset);
PADPacketizer* pad_packetizer;
CharsetConverter charset_converter;
bool dls_toggle;
DL_STATE dl_state_prev;
public:
static const int APPTYPE_START;
static const int APPTYPE_CONT;
static const std::string REQUEST_REREAD_SUFFIX;
DLSEncoder(PADPacketizer* pad_packetizer) : pad_packetizer(pad_packetizer), dls_toggle(false) {}
void encodeLabel(const std::string& dls_file, const DL_PARAMS& dl_params);
};
#endif /* DLS_H_ */
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