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the OTP PDU, Much simpler than the ACN PDU.

This commit is contained in:
Kevin Matz 2021-08-19 12:55:25 -04:00
parent a5710d1bb5
commit 818a0891a3
3 changed files with 236 additions and 0 deletions
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2
CMakeLists.txt
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@ -58,6 +58,8 @@ set(SOURCE_FILES
dmx/universe.cpp
dmx/universe.h
otp/opt.h
otp/pdu.h
otp/pdu.cpp
rdm/controller.h
rdm/controller.cpp
rdm/device.h

107
otp/pdu.cpp Normal file
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@ -0,0 +1,107 @@
/*
otp/pdu.cpp
Copyright (c) 2021 Kevin Matz (kevin.matz@gmail.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include "pdu.h"
namespace OTP::PDU {
/**
* @brief pdu::pdu
*/
pdu::pdu()
{
}
/**
* @brief pdu::~pdu
*/
pdu::~pdu()
{
if (data) delete data;
}
/**
* @brief pdu::streamSize
* @return
*/
size_t pdu::streamSize() const
{
size_t s = 4; // vector + length
if (data)
s += data->streamSize();
return s;
}
/**
* @brief pdu::iStream
* @param stream
*/
void pdu::iStream(Stream stream)
{
uint16_t length;
*stream >> vector;
*stream >> length;
// length includes the vector and length.
// the remainder of the length is data
length -= 4;
// abort if the remaining PDU length isn't available
if (!stream->good() || stream->available() < length)
return stream->setstate(std::ios_base::failbit);
// create a stream buffer for the data
stream_ = Stream(new ACN::PDU::pdu_stream(stream->data(), length));
if (stream_->available() != length)
return stream->setstate(std::ios_base::failbit);
// fast-forward the input stream
stream->ignore(length);
if (!stream->available())
return stream->setstate(std::ios_base::eofbit);
}
/**
* @brief pdu::oStream
* @param stream
*/
void pdu::oStream(Stream stream) const
{
uint16_t length = streamSize();
*stream << vector;
*stream << length;
data->oStream(stream);
}
} // namespace OTP::PDU

127
otp/pdu.h Normal file
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@ -0,0 +1,127 @@
/*
otp/pdu.h
Copyright (c) 2021 Kevin Matz (kevin.matz@gmail.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#pragma once
#include "acn/pdu-stream.h"
#include <vector>
namespace OTP {
namespace PDU {
using ACN::PDU::Stream;
using ACN::PDU::pdu_stream_object;
/**
* @brief The pdu_data struct
*/
struct pdu_data : public pdu_stream_object {};
class pdu;
using Pdu = std::shared_ptr<pdu>;
template<class T>
struct Block
: public pdu_data
{
Block() {
static_assert(std::is_base_of<OTP::PDU::pdu, T>::value,
"type parameter of ACN::PDU::Block must derive from OTP::PDU::Pdu");
}
std::shared_ptr<std::vector<std::shared_ptr<T>>> members
= std::shared_ptr<std::vector<std::shared_ptr<T>>>
(new std::vector<std::shared_ptr<T>>);
void setParent(Pdu parent) {
for (auto &p : *members)
p->parent = parent;
}
size_t streamSize() const override {
size_t s = 0;
for (auto &p : *members)
s += p->streamSize();
return s;
}
void iStream(Stream s) override {
while(s->good()) {
std::shared_ptr<T> p(new T());
p->iStream(s);
if (s->fail()) // stream failed during pdu read
break;
if (p->stream()->fail()) // pdu buffer failed
continue;
members->push_back(p); // add to block
}
}
void oStream(Stream s) const override {
for ( const auto& p : *members )
p->oStream(s);
};
};
/**
* @brief The OTP::PDU::Pdu class
*/
class pdu
: public std::enable_shared_from_this<pdu>
, public pdu_data
{
public:
pdu();
~pdu();
pdu_data* data = nullptr;
uint16_t vector = 0;
Pdu parent;
Stream stream() { return stream_; }
virtual size_t streamSize() const override;
virtual void iStream(Stream) override;
virtual void oStream(Stream) const override;
template<class T>
void createData()
{
data = new T();
if (stream_ && stream_->good())
data->iStream(stream_);
}
template<class T>
void createDataBlock() {
auto block = new PDU::Block<T>();
if (stream_)
block->iStream(stream_);
block->setParent(shared_from_this());
data = block;
}
private:
Stream stream_;
};
} // namespace PDU
} // namespace OTP