hyperion.ng/libsrc/flatbufserver/FlatBufferConnection.cpp

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// stl includes
#include <stdexcept>
// Qt includes
#include <QRgb>
// flatbuffer includes
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#include <flatbufserver/FlatBufferConnection.h>
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FlatBufferConnection::FlatBufferConnection(const QString& origin, const QString & address, const int& priority, const bool& skipReply)
: _socket()
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, _origin(origin)
, _priority(priority)
, _prevSocketState(QAbstractSocket::UnconnectedState)
, _log(Logger::getInstance("FLATBUFCONNECTION"))
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, _registered(false)
{
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QStringList parts = address.split(":");
if (parts.size() != 2)
{
throw std::runtime_error(QString("FLATBUFCONNECTION ERROR: Unable to parse address (%1)").arg(address).toStdString());
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}
_host = parts[0];
bool ok;
_port = parts[1].toUShort(&ok);
if (!ok)
{
throw std::runtime_error(QString("FLATBUFCONNECTION ERROR: Unable to parse the port (%1)").arg(parts[1]).toStdString());
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}
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if(!skipReply)
connect(&_socket, &QTcpSocket::readyRead, this, &FlatBufferConnection::readData, Qt::UniqueConnection);
// init connect
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Info(_log, "Connecting to Hyperion: %s:%d", _host.toStdString().c_str(), _port);
connectToHost();
// start the connection timer
_timer.setInterval(5000);
connect(&_timer, &QTimer::timeout, this, &FlatBufferConnection::connectToHost);
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_timer.start();
}
FlatBufferConnection::~FlatBufferConnection()
{
_timer.stop();
_socket.close();
}
void FlatBufferConnection::readData()
{
_receiveBuffer += _socket.readAll();
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// check if we can read a header
while(_receiveBuffer.size() >= 4)
{
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uint32_t messageSize =
((_receiveBuffer[0]<<24) & 0xFF000000) |
((_receiveBuffer[1]<<16) & 0x00FF0000) |
((_receiveBuffer[2]<< 8) & 0x0000FF00) |
((_receiveBuffer[3] ) & 0x000000FF);
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// check if we can read a complete message
if((uint32_t) _receiveBuffer.size() < messageSize + 4) return;
// extract message only and remove header + msg from buffer :: QByteArray::remove() does not return the removed data
const QByteArray msg = _receiveBuffer.right(messageSize);
_receiveBuffer.remove(0, messageSize + 4);
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const uint8_t* msgData = reinterpret_cast<const uint8_t*>(msg.constData());
flatbuffers::Verifier verifier(msgData, messageSize);
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if (hyperionnet::VerifyReplyBuffer(verifier))
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{
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parseReply(hyperionnet::GetReply(msgData));
continue;
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}
Error(_log, "Unable to parse reply");
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}
}
void FlatBufferConnection::setSkipReply(const bool& skip)
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{
if(skip)
disconnect(&_socket, &QTcpSocket::readyRead, 0, 0);
else
connect(&_socket, &QTcpSocket::readyRead, this, &FlatBufferConnection::readData, Qt::UniqueConnection);
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}
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void FlatBufferConnection::setRegister(const QString& origin, int priority)
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{
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auto registerReq = hyperionnet::CreateRegister(_builder, _builder.CreateString(QSTRING_CSTR(origin)), priority);
auto req = hyperionnet::CreateRequest(_builder, hyperionnet::Command_Register, registerReq.Union());
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_builder.Finish(req);
uint32_t size = _builder.GetSize();
const uint8_t header[] = {
uint8_t((size >> 24) & 0xFF),
uint8_t((size >> 16) & 0xFF),
uint8_t((size >> 8) & 0xFF),
uint8_t((size ) & 0xFF)};
// write message
int count = 0;
count += _socket.write(reinterpret_cast<const char *>(header), 4);
count += _socket.write(reinterpret_cast<const char *>(_builder.GetBufferPointer()), size);
_socket.flush();
_builder.Clear();
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}
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void FlatBufferConnection::setColor(const ColorRgb & color, int priority, int duration)
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{
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auto colorReq = hyperionnet::CreateColor(_builder, (color.red << 16) | (color.green << 8) | color.blue, duration);
auto req = hyperionnet::CreateRequest(_builder, hyperionnet::Command_Color, colorReq.Union());
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_builder.Finish(req);
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sendMessage(_builder.GetBufferPointer(), _builder.GetSize());
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}
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void FlatBufferConnection::setImage(const Image<ColorRgb> &image)
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{
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auto imgData = _builder.CreateVector(reinterpret_cast<const uint8_t*>(image.memptr()), image.size());
auto rawImg = hyperionnet::CreateRawImage(_builder, imgData, image.width(), image.height());
auto imageReq = hyperionnet::CreateImage(_builder, hyperionnet::ImageType_RawImage, rawImg.Union(), -1);
auto req = hyperionnet::CreateRequest(_builder,hyperionnet::Command_Image,imageReq.Union());
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_builder.Finish(req);
sendMessage(_builder.GetBufferPointer(), _builder.GetSize());
}
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void FlatBufferConnection::clear(int priority)
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{
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auto clearReq = hyperionnet::CreateClear(_builder, priority);
auto req = hyperionnet::CreateRequest(_builder,hyperionnet::Command_Clear, clearReq.Union());
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_builder.Finish(req);
sendMessage(_builder.GetBufferPointer(), _builder.GetSize());
}
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void FlatBufferConnection::clearAll()
{
clear(-1);
}
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void FlatBufferConnection::connectToHost()
{
// try connection only when
if (_socket.state() == QAbstractSocket::UnconnectedState)
_socket.connectToHost(_host, _port);
}
void FlatBufferConnection::sendMessage(const uint8_t* buffer, uint32_t size)
{
// print out connection message only when state is changed
if (_socket.state() != _prevSocketState )
{
_registered = false;
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switch (_socket.state() )
{
case QAbstractSocket::UnconnectedState:
Info(_log, "No connection to Hyperion: %s:%d", _host.toStdString().c_str(), _port);
break;
case QAbstractSocket::ConnectedState:
Info(_log, "Connected to Hyperion: %s:%d", _host.toStdString().c_str(), _port);
break;
default:
Debug(_log, "Connecting to Hyperion: %s:%d", _host.toStdString().c_str(), _port);
break;
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}
_prevSocketState = _socket.state();
}
if (_socket.state() != QAbstractSocket::ConnectedState)
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return;
if(!_registered)
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{
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setRegister(_origin, _priority);
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return;
}
const uint8_t header[] = {
uint8_t((size >> 24) & 0xFF),
uint8_t((size >> 16) & 0xFF),
uint8_t((size >> 8) & 0xFF),
uint8_t((size ) & 0xFF)};
// write message
int count = 0;
count += _socket.write(reinterpret_cast<const char *>(header), 4);
count += _socket.write(reinterpret_cast<const char *>(buffer), size);
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_socket.flush();
_builder.Clear();
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}
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bool FlatBufferConnection::parseReply(const hyperionnet::Reply *reply)
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{
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if (!reply->error())
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{
// no error set must be a success or registered or video
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const auto videoMode = reply->video();
const auto registered = reply->registered();
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if (videoMode != -1) {
// We got a video reply.
emit setVideoMode(static_cast<VideoMode>(videoMode));
return true;
}
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// We got a registered reply.
if (registered != -1 && registered != _priority)
_registered = false;
else
_registered = true;
return true;
}
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return false;
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}