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//***************************************************************************
// Group VDR/GraphTFT
// File comthread.cc
// Date 28.10.06 - Jörg Wendel
// This code is distributed under the terms and conditions of the
// GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
//--------------------------------------------------------------------------
// Class ComThread
//***************************************************************************
#include <arpa/inet.h>
#include "comthread.hpp"
//***************************************************************************
// Object
//***************************************************************************
ComThread::ComThread()
: QThread()
{
line = new TcpChannel();
bufferSize = maxBuffer;
buffer = new char[bufferSize+1];
header = new TcpChannel::Header;
timeout = 1;
port = -1;
*host = 0;
}
ComThread::~ComThread()
{
if (line->isConnected())
{
tell(eloAlways, "Logout from server, closing tcp connection");
line->write(cGraphTftComService::cmdLogout);
line->close();
}
delete line;
delete header;
delete[] buffer;
}
//***************************************************************************
// Run
//***************************************************************************
void ComThread::run()
{
const int checkTimeout = 2;
int status;
time_t lastCheck = time(0);
running = true;
while (running)
{
if (!line->isConnected())
{
tell(eloAlways, "Trying connecting to '%s' at port (%d)", host, port);
if (line->open(host, port) == success)
tell(eloAlways, "Connection to '%s' established", host);
else
tell(eloAlways, "Connecting to '%s' failed", host);
}
while (line->isConnected() && running)
{
if (lastCheck+checkTimeout < time(0))
{
line->write(cGraphTftComService::cmdCheck);
lastCheck = time(0);
}
if ((status = line->look(1)) != success)
{
if (status != TcpChannel::wrnNoEventPending)
{
line->close();
tell(eloAlways, "Error: Communication problems, "
"look failed, status was (%d)", status);
break;
}
continue;
}
if ((status = read()) != success)
{
line->close();
tell(eloAlways, "Error: Communication problems, "
"read failed, status was (%d)", status);
break;
}
}
if (!running) break;
tell(eloAlways, "Retrying in %ld seconds", timeout);
for (int i = 0; i < timeout && running; i++)
sleep(1);
}
}
//***************************************************************************
// Transmit events
//***************************************************************************
int ComThread::mouseEvent(int x, int y, int button, int flag, int data)
{
GraphTftTouchEvent m;
m.x = x;
m.y = y;
m.button = button;
m.flag = flag;
m.data = data;
line->write(cGraphTftComService::cmdMouseEvent, (char*)&m, sizeof(GraphTftTouchEvent));
return 0;
}
//***************************************************************************
// ...
//***************************************************************************
int ComThread::keyEvent(int key, int flag)
{
GraphTftTouchEvent m;
m.x = 0;
m.y = 0;
m.button = key;
m.flag = flag | efKeyboard;
line->write(cGraphTftComService::cmdMouseEvent, (char*)&m, sizeof(GraphTftTouchEvent));
return 0;
}
//***************************************************************************
// Read
//***************************************************************************
int ComThread::read()
{
int status;
TcpChannel::Header tmp;
// es stehen Daten an, erst einmal den Header abholen ..
if ((status = line->read((char*)&tmp, sizeof(TcpChannel::Header))) == 0)
{
header->command = ntohl(tmp.command);
header->size = ntohl(tmp.size);
switch (header->command)
{
case cGraphTftComService::cmdWelcome:
{
tell(eloAlways, "Got welcome");
break;
}
case cGraphTftComService::cmdLogout:
{
tell(eloAlways, "Got logout from client, closing line");
line->close();
break;
}
case cGraphTftComService::cmdData:
{
tell(eloDebug, "Debug: Received %d bytes", header->size);
bufferLock.lockForWrite();
status = line->read(buffer, header->size);
bufferLock.unlock();
if (status == success)
update((unsigned char*)buffer, header->size);
break;
}
case cGraphTftComService::cmdMouseEvent:
{
GraphTftTouchEvent ev;
status = line->read((char*)&ev, header->size);
tell(eloAlways, "Got mouse event, button (%d) at (%d/%d)", ev.button, ev.x, ev.y);
break;
}
default:
{
tell(eloAlways, "Got unexpected protocol (%d), aborting", header->command);
status = -1;
break;
}
}
}
return status;
}
//***************************************************************************
// Update Image
//***************************************************************************
void ComThread::update(unsigned char* buffer, int size)
{
emit updateImage(buffer, size);
}
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