hyperion.ng/libsrc/protoserver/ProtoClientConnection.cpp

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// system includes
#include <stdexcept>
#include <cassert>
// stl includes
#include <iostream>
#include <sstream>
#include <iterator>
// Qt includes
#include <QRgb>
#include <QResource>
#include <QDateTime>
// hyperion util includes
#include "hyperion/ImageProcessorFactory.h"
#include "hyperion/ImageProcessor.h"
#include "utils/ColorRgb.h"
// project includes
#include "ProtoClientConnection.h"
ProtoClientConnection::ProtoClientConnection(QTcpSocket *socket, Hyperion * hyperion) :
QObject(),
_socket(socket),
_imageProcessor(ImageProcessorFactory::getInstance().newImageProcessor()),
_hyperion(hyperion),
_receiveBuffer()
{
// connect internal signals and slots
connect(_socket, SIGNAL(disconnected()), this, SLOT(socketClosed()));
connect(_socket, SIGNAL(readyRead()), this, SLOT(readData()));
}
ProtoClientConnection::~ProtoClientConnection()
{
delete _socket;
}
void ProtoClientConnection::readData()
{
_receiveBuffer += _socket->readAll();
// check if we can read a message size
if (_receiveBuffer.size() <= 4)
{
return;
}
// read the message size
uint32_t messageSize =
((_receiveBuffer[0]<<24) & 0xFF000000) |
((_receiveBuffer[1]<<16) & 0x00FF0000) |
((_receiveBuffer[2]<< 8) & 0x0000FF00) |
((_receiveBuffer[3] ) & 0x000000FF);
// check if we can read a complete message
if ((uint32_t) _receiveBuffer.size() < messageSize + 4)
{
return;
}
// read a message
proto::HyperionRequest message;
if (!message.ParseFromArray(_receiveBuffer.data() + 4, messageSize))
{
sendErrorReply("Unable to parse message");
}
// handle the message
handleMessage(message);
// remove message data from buffer
_receiveBuffer = _receiveBuffer.mid(messageSize + 4);
}
void ProtoClientConnection::socketClosed()
{
emit connectionClosed(this);
}
void ProtoClientConnection::handleMessage(const proto::HyperionRequest & message)
{
switch (message.command())
{
case proto::HyperionRequest::COLOR:
if (!message.HasExtension(proto::ColorRequest::colorRequest))
{
sendErrorReply("Received COLOR command without ColorRequest");
break;
}
handleColorCommand(message.GetExtension(proto::ColorRequest::colorRequest));
break;
case proto::HyperionRequest::IMAGE:
if (!message.HasExtension(proto::ImageRequest::imageRequest))
{
sendErrorReply("Received IMAGE command without ImageRequest");
break;
}
handleImageCommand(message.GetExtension(proto::ImageRequest::imageRequest));
break;
case proto::HyperionRequest::CLEAR:
if (!message.HasExtension(proto::ClearRequest::clearRequest))
{
sendErrorReply("Received CLEAR command without ClearRequest");
break;
}
handleClearCommand(message.GetExtension(proto::ClearRequest::clearRequest));
break;
case proto::HyperionRequest::CLEARALL:
handleClearallCommand();
break;
default:
handleNotImplemented();
}
}
void ProtoClientConnection::handleColorCommand(const proto::ColorRequest &message)
{
// extract parameters
int priority = message.priority();
int duration = message.has_duration() ? message.duration() : -1;
ColorRgb color;
color.red = qRed(message.rgbcolor());
color.green = qGreen(message.rgbcolor());
color.blue = qBlue(message.rgbcolor());
// set output
_hyperion->setColor(priority, color, duration);
// send reply
sendSuccessReply();
}
void ProtoClientConnection::handleImageCommand(const proto::ImageRequest &message)
{
// extract parameters
int priority = message.priority();
int duration = message.has_duration() ? message.duration() : -1;
int width = message.imagewidth();
int height = message.imageheight();
const std::string & imageData = message.imagedata();
// check consistency of the size of the received data
if ((int) imageData.size() != width*height*3)
{
sendErrorReply("Size of image data does not match with the width and height");
return;
}
// set width and height of the image processor
_imageProcessor->setSize(width, height);
// create ImageRgb
Image<ColorRgb> image(width, height);
memcpy(image.memptr(), imageData.c_str(), imageData.size());
// process the image
std::vector<ColorRgb> ledColors = _imageProcessor->process(image);
_hyperion->setColors(priority, ledColors, duration);
// send reply
sendSuccessReply();
}
void ProtoClientConnection::handleClearCommand(const proto::ClearRequest &message)
{
// extract parameters
int priority = message.priority();
// clear priority
_hyperion->clear(priority);
// send reply
sendSuccessReply();
}
void ProtoClientConnection::handleClearallCommand()
{
// clear priority
_hyperion->clearall();
// send reply
sendSuccessReply();
}
void ProtoClientConnection::handleNotImplemented()
{
sendErrorReply("Command not implemented");
}
void ProtoClientConnection::sendMessage(const google::protobuf::Message &message)
{
std::string serializedReply = message.SerializeAsString();
uint32_t size = serializedReply.size();
uint8_t sizeData[] = {uint8_t(size >> 24), uint8_t(size >> 16), uint8_t(size >> 8), uint8_t(size)};
_socket->write((const char *) sizeData, sizeof(sizeData));
_socket->write(serializedReply.data(), serializedReply.length());
_socket->flush();
}
void ProtoClientConnection::sendSuccessReply()
{
// create reply
proto::HyperionReply reply;
reply.set_success(true);
// send reply
sendMessage(reply);
}
void ProtoClientConnection::sendErrorReply(const std::string &error)
{
// create reply
proto::HyperionReply reply;
reply.set_success(false);
reply.set_error(error);
// send reply
sendMessage(reply);
}