106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/*
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universe.cpp
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Copyright (c) 2020 Kevin Matz (kevin.matz@gmail.com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "universe.h"
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namespace SACN {
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/**
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Construct a Universe Source from an sACN frame PDU
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*/
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UniverseSource::UniverseSource(std::shared_ptr<DATA::Pdu> pdu) {
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auto root_header = (RLP::rlp_header*)pdu->parent()->header();
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cid_ = root_header->cid;
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auto frame_header = (DATA::frame_header*)pdu->header();
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description_ = std::string((char*)frame_header->source_name);
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universe_ = frame_header->universe;
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priority_ = frame_header->priority;
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sync_address_ = frame_header->sync_address;
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options_ = frame_header->options;
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};
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/**
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Construct a new Universe.
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*/
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Universe::Universe()
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: DMX::Universe()
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{
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synchronized_ = false;
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}
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/**
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Set universe data from a DMP PDU from a UniverseSource.
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*/
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void Universe::set(std::shared_ptr<DMP::Pdu> dmp,
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std::shared_ptr<UniverseSource> source) {
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// 7.3 Address Type and Data Type
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// Sources shall set the DMP Layer's Address Type and Data Type to 0xa1.
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// Receivers shall discard the packet if the received value is not 0xa1.
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if (!dmp->header())
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return;
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auto type = (ACN::DMP::address_type*)dmp->header();
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if (!type->z_reserved) return; // needs to be true, but why?
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if (type->relative) return;
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if (type->type != ACN::DMP::ARRAY) return;
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if (type->x_reserved != 0) return;
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if (type->width != ACN::DMP::TWO) return;
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// only act on the first property pair in the data
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if (!dmp->data())
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return;
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auto data = (ACN::DMP::dmp_set_data*)dmp->data();
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auto prop = data->properties.front();
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auto pr = prop.first; // property range
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auto pd = prop.second; // property data
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// 7.4 First Property Address
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// Sources shall set the DMP Layer's First Property Address to 0x0000.
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// Receivers shall discard the packet if the received value is not 0x0000.
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if (pr.address != 0)
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return;
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// 7.5 Address Increment
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// Sources shall set the DMP Layer's Address Increment to 0x0001.
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// Receivers shall discard the packet if the received value is not 0x0001.
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if (pr.incriment != 1)
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return;
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// 7.6 Property Value Count
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// The DMP Layer's Property Value Count is used to encode the number of
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// DMX512-A [DMX] Slots (including the START Code slot).
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if (pr.count < 1 || pr.count > 513)
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return;
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// 7.7 Property Values (DMX512-A Data)
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/// The DMP Layer's Property values field is used to encode the
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// DMX512-A [DMX] START Code and data.
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DMX::Universe::set(pd);
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source_ = source;
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}
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}; // SACN
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