diff options
Diffstat (limited to 'src/fig')
| -rw-r--r-- | src/fig/FIG0.h | 1 | ||||
| -rw-r--r-- | src/fig/FIG0_14.cpp | 121 | ||||
| -rw-r--r-- | src/fig/FIG0_14.h | 55 |
3 files changed, 177 insertions, 0 deletions
diff --git a/src/fig/FIG0.h b/src/fig/FIG0.h index 0076cf4..a779fa0 100644 --- a/src/fig/FIG0.h +++ b/src/fig/FIG0.h @@ -37,6 +37,7 @@ #include "fig/FIG0_9.h" #include "fig/FIG0_10.h" #include "fig/FIG0_13.h" +#include "fig/FIG0_14.h" #include "fig/FIG0_17.h" #include "fig/FIG0_18.h" #include "fig/FIG0_19.h" diff --git a/src/fig/FIG0_14.cpp b/src/fig/FIG0_14.cpp new file mode 100644 index 0000000..0f796e5 --- /dev/null +++ b/src/fig/FIG0_14.cpp @@ -0,0 +1,121 @@ +/* + 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) 2020 + Matthias P. Braendli, matthias.braendli@mpb.li + + Copyright (C) 2022 + Nick Piggott, nick@piggott.eu + */ +/* + 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 "fig/FIG0structs.h" +#include "fig/FIG0_14.h" +#include "utils.h" + +namespace FIC { + +// See EN 300 401, Clause 6.2.2 for the FIG0_14 description + +struct FIG0_14_AppInfo { + uint8_t subchId:6; + uint8_t fecScheme:2; +} PACKED; + + +FIG0_14::FIG0_14(FIGRuntimeInformation *rti) : + m_rti(rti), + m_initialised(false) +{ +} + +FillStatus FIG0_14::fill(uint8_t *buf, size_t max_size) +{ + FillStatus fs; + auto ensemble = m_rti->ensemble; + ssize_t remaining = max_size; + + if (not m_initialised) { + componentFIG0_14 = m_rti->ensemble->components.end(); + m_initialised = true; + } + + FIGtype0* fig0 = NULL; + + for (; componentFIG0_14 != ensemble->components.end(); + ++componentFIG0_14) { + + auto subchannel = getSubchannel(ensemble->subchannels, + (*componentFIG0_14)->subchId); + + if (subchannel == ensemble->subchannels.end()) { + etiLog.log(error, + "Subchannel %i does not exist for component " + "of service %i", + (*componentFIG0_14)->subchId, + (*componentFIG0_14)->serviceId); + continue; + } + + if ( ((*subchannel)->type == subchannel_type_t::Packet and + true)) { // Need to do a test here to see if a packet channel is normal or enhanced + + static_assert(sizeof(FIG0_14_AppInfo) == 1); + + int required_size = 1; // FIG0_14 data field is 6 bits subchanID and 2 bits fec scheme + + if (fig0 == NULL) { + if (remaining < 2 + required_size) { + break; + } + fig0 = (FIGtype0*)buf; + fig0->FIGtypeNumber = 0; + fig0->Length = 1; + fig0->CN = 0; + fig0->OE = 0; + fig0->PD = 1; + fig0->Extension = 14; + buf += 2; + remaining -= 2; + } + else if (remaining < required_size) { + break; + } + FIG0_14_AppInfo* app = (FIG0_14_AppInfo*)buf; + app->subchId = (*componentFIG0_14)->subchId; + app->fecScheme = 1; // only 1 fec_scheme is defined + buf += 1 ; + remaining -= 1; + fig0->Length += 1; + } + } + + if (componentFIG0_14 == ensemble->components.end()) { + componentFIG0_14 = ensemble->components.begin(); + + fs.complete_fig_transmitted = true; + + } + + fs.num_bytes_written = max_size - remaining; + return fs; +} + +} diff --git a/src/fig/FIG0_14.h b/src/fig/FIG0_14.h new file mode 100644 index 0000000..0b46683 --- /dev/null +++ b/src/fig/FIG0_14.h @@ -0,0 +1,55 @@ +/* + 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) 2020 + Matthias P. Braendli, matthias.braendli@mpb.li + + Copyright (C) 2022 + Nick Piggott, nick@piggott.eu + */ +/* + 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/>. +*/ + +#pragma once + +#include <cstdint> +#include <vector> + +namespace FIC { + +// FIG type 0/14 +// FEC sub-channel organization +class FIG0_14 : public IFIG +{ + public: + FIG0_14(FIGRuntimeInformation* rti); + virtual FillStatus fill(uint8_t *buf, size_t max_size); + virtual FIG_rate repetition_rate() const { return FIG_rate::B; } + + virtual int figtype() const { return 0; } + virtual int figextension() const { return 14; } + + private: + FIGRuntimeInformation *m_rti; + bool m_initialised; + bool m_transmit_programme; + vec_sp_component::iterator componentFIG0_14; +}; + +} |