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Diffstat (limited to 'src/dls.h')
| -rw-r--r-- | src/dls.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/dls.h b/src/dls.h new file mode 100644 index 0000000..f9e5c57 --- /dev/null +++ b/src/dls.h @@ -0,0 +1,155 @@ +/* + 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 "pad_common.h" +#include "charset.h" + + +// Charsets from TS 101 756 +enum { + CHARSET_COMPLETE_EBU_LATIN = 0, //!< Complete EBU Latin based repertoire + CHARSET_EBU_LATIN_CY_GR = 1, //!< EBU Latin based common core, Cyrillic, Greek + CHARSET_EBU_LATIN_AR_HE_CY_GR = 2, //!< EBU Latin based core, Arabic, Hebrew, Cyrillic and Greek + CHARSET_ISO_LATIN_ALPHABET_2 = 3, //!< ISO Latin Alphabet No 2 + CHARSET_UCS2_BE = 6, //!< ISO/IEC 10646 using UCS-2 transformation format, big endian byte order + CHARSET_UTF8 = 15 //!< ISO Latin Alphabet No 2 +}; + +// DL/DL+ commands +enum { + DLS_CMD_REMOVE_LABEL = 0b0001, + DLS_CMD_DL_PLUS = 0b0010 +}; +enum { + DL_PLUS_CMD_TAGS = 0b0000 +}; + + +// --- 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); + } +}; + + +// --- DLSManager ----------------------------------------------------------------- +class DLSManager { +private: + 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, uint8_t charset, int seg_index); + void prepend_dl_dgs(PADPacketizer& pad_packetizer, const DL_STATE& dl_state, uint8_t charset); + + CharsetConverter charset_converter; + bool dls_toggle; + DL_STATE dl_state_prev; +public: + static const size_t MAXDLS; + static const size_t DLS_SEG_LEN_PREFIX; + static const size_t DLS_SEG_LEN_CHAR_MAX; + static const int DLS_REPETITION_WHILE_SLS; + static const std::string DL_PARAMS_OPEN; + static const std::string DL_PARAMS_CLOSE; + + DLSManager() : dls_toggle(false) {} + void writeDLS(PADPacketizer& pad_packetizer, const std::string& dls_file, uint8_t charset, bool raw_dls, bool remove_dls); +}; + +#endif /* DLS_H_ */ |