/*!
* Queues a new command \a id to the next available slot and returns a reference to that command,
* so the caller can give it additional parameters. If the queue is full, we simply reallocate some
* more space up to the max size.
*/
GlCommand &CanvasGlCommandQueue::queueCommand(CanvasGlCommandQueue::GlCommandId id)
{
// Increase queue size if we run out of space. Note that this should only happen on the first
// frame on most applications, as we never decrease the allocated size.
if (m_queuedCount == m_size) {
// If queue is full and at max size, we need to synchronously execute all commands
if (m_queuedCount == m_maxSize) {
emit queueFull();
// queueFull handling should reset the queue, but in case renderer thread is not available
// to handle the commands for some reason, let's reset the count. In that case the entire
// queue is lost, so results may not be pretty, but nothing much can be done about it.
// Let's at least make sure we don't leak any memory.
if (m_queuedCount) {
deleteUntransferedCommandData();
m_queuedCount = 0;
clearQuickItemAsTextureList();
}
} else {
m_size += m_size / 2;
if (m_size > m_maxSize)
m_size = m_maxSize;
m_queue.resize(m_size);
}
}
GlCommand &command = m_queue[m_queuedCount++];
command.id = id;
command.data = 0;
return command;
}
void ViewFinderWrapper::startCamera()
{
m_processor = new VideoEncoder(this);
connect(m_processor, SIGNAL(queueFull()), this, SLOT(onThreadCongested()));
connect(m_processor, SIGNAL(frameProcessed(QByteArray)),this,SIGNAL(newFrameToSend(QByteArray)));
m_processor->start();
m_camera = new QCamera(this);
QList<QByteArray> cameras = m_camera->availableDevices();
m_camera = new QCamera(cameras.first());
m_camera->setViewfinder(new QCameraViewfinder);
if (m_camera) {
m_camera->start();
if(m_camera->state()==QCamera::ActiveState){
m_cameraActive = true;
startViewFinder();
}
else qDebug()<<"camera didn't start";
}
}
void addq(element item){
/* add an item to the queue */
rear=(rear+1)%MAX_QUEUE_SIZE;//make it circular
if(rear==front){
queueFull();/* print error and exit */
}
queue[rear]=item;
}
void VideoWidget::initialize(QStatusBar *bar, SFMViewer *sfmViewer, SceneModel * sceneModel){
// Connect surface to our slot
connect(surface, SIGNAL(frameAvailable()), this, SLOT(frameReady()));
processor = new ProcessingThread(this);
connect(processor, SIGNAL(frameProcessed()), this, SLOT(onFrameProcessed()));
connect(processor, SIGNAL(queueFull()), this, SLOT(onThreadCongested()));
processor->initialize(bar, sceneModel);
processor->setUpdateListener(sfmViewer);
processor->start();
}
NetworkManager::NetworkManager(QString host, int port, QObject *parent) : JsonCommunication(host, port, parent)
{
m_logged = false;
m_heartbeatManager = new HeartbeatManager(3,this);
connect(m_heartbeatManager, SIGNAL(networkRequest(QString)), this, SLOT(serverRequest(QString)));
connect(m_heartbeatManager, SIGNAL(queueFull()), this, SLOT(forceDisconnect()));
connect(this,SIGNAL(connectedChanged(bool)),m_heartbeatManager,SLOT(setRunning(bool)));
connect(this,SIGNAL(hearthbeatReceived(QString)),m_heartbeatManager,SLOT(validate(QString)));
connect(this,SIGNAL(jsonReceived(QString)),this,SLOT(processJson(QString)));
connect(this,SIGNAL(serverConnected()),this,SLOT(tryLogin()));
connect(this,SIGNAL(serverDisconnected()),this,SLOT(setNotLogged()));
}
void HeartbeatManager::enqueue(QString uuid)
{
if (m_queueSize != 0){
if (m_hbQueue.length() == m_queueSize){
logm("Heartbeat queue is full");
emit queueFull();
m_hbQueue.clear();
}
else{
m_hbQueue.enqueue(uuid);
}
}
}
void queueUp (tQueue* q, char c) {
/*
** Vlo¾í znak c do fronty. Pokud je fronta plná, o¹etøete chybu voláním
** funkce queueError(QERR_UP). Vkládání do plné fronty se pova¾uje za
** nekorektní operaci. Situace by mohla být øe¹ena i tak, ¾e by operace
** neprovádìla nic, ale v pøípadì pou¾ití takto definované abstrakce by se
** obtí¾nì odhalovaly chyby v algoritmech, které by abstrakci vyu¾ívaly.
**
** Pøi implementaci vyu¾ijte døíve definovaných funkcí queueFull a nextIndex.
*/
if (queueFull(q))
{
queueError(QERR_UP);
return;
}
q->arr[q->b_index] = c; /* Vlo¾í znak c na prvú voµnú pozíciu vo fronte */
q->b_index = nextIndex(q->b_index); /* Nastaví b_index na ïal¹iu voµnú pozíciu vo fronte */
}
void queueUp (tQueue* q, char c) {
/*
** Vlo¾í znak c do fronty. Pokud je fronta plná, o¹etøete chybu voláním
** funkce queueError(QERR_UP). Vkládání do plné fronty se pova¾uje za
** nekorektní operaci. Situace by mohla být øe¹ena i tak, ¾e by operace
** neprovádìla nic, ale v pøípadì pou¾ití takto definované abstrakce by se
** obtí¾nì odhalovaly chyby v algoritmech, které by abstrakci vyu¾ívaly.
**
** Pøi implementaci vyu¾ijte døíve definovaných funkcí queueFull a nextIndex.
*/
if(queueFull(q)){ // Zkontroluj, zda-li neni fronte plna
queueError(QERR_UP); // Vyhod chybovou hlasku
return; // Ukonci
}
q->arr[q->b_index] = c; // Vloz znak
q->b_index = nextIndex(q->b_index); // A posun index posledni volne pozice
}
/*----------------------------------------------------------------------------*/
static size_t canWrite(void *object, const void *buffer, size_t length)
{
assert(length % sizeof(struct CanStandardMessage) == 0);
struct Can * const interface = object;
if (interface->mode == MODE_LISTENER)
return 0;
LPC_CAN_Type * const reg = interface->base.reg;
const struct CanStandardMessage *input = buffer;
const size_t initialLength = length;
const irqState state = irqSave();
if (queueEmpty(&interface->txQueue))
{
uint32_t status = reg->SR;
while (length && (status & SR_TBS_MASK))
{
/* One of transmit buffers is empty */
status = sendMessage(interface, (const struct CanMessage *)input, status);
length -= sizeof(*input);
++input;
}
}
while (length && !queueFull(&interface->txQueue))
{
struct CanMessage *output;
queuePop(&interface->pool, &output);
memcpy(output, input, sizeof(*input));
queuePush(&interface->txQueue, &output);
length -= sizeof(*input);
++input;
}
irqRestore(state);
return initialLength - length;
}
Bool queuePut(Queue *q, unsigned char c)
{
if (queueFull(q)) {
return false;
}
else {
q->buf[q->in] = c;
/* incrementa para a proxima posicao */
q->in++;
/* incrementar o numero de elementos da queue */
q->cnt++;
if(q->in == q->size)
q->in = 0;
}
return true;
}
void queueUp (tQueue* q, char c) {
/*
** Vlo¾í znak c do fronty. Pokud je fronta plná, o¹etøete chybu voláním
** funkce queueError(QERR_UP). Vkládání do plné fronty se pova¾uje za
** nekorektní operaci. Situace by mohla být øe¹ena i tak, ¾e by operace
** neprovádìla nic, ale v pøípadì pou¾ití takto definované abstrakce by se
** obtí¾nì odhalovaly chyby v algoritmech, které by abstrakci vyu¾ívaly.
**
** Pøi implementaci vyu¾ijte døíve definovaných funkcí queueFull a nextIndex.
*/
if(queueFull(q) == 0) //fronta nieje plna
{
q->arr[q->b_index] = c; //vlozime znak
q->b_index = nextIndex(q->b_index); //posunieme sa
}
else //fronta je plna vypiseme chybu
{
queueError(QERR_UP);
}
}
void queueUp (tQueue* q, char c) {
/*
** Vlo znak c do fronty. Pokud je fronta pln, oetete chybu volnm
** funkce queueError(QERR_UP). Vkldn do pln fronty se povauje za
** nekorektn operaci. Situace by mohla bt eena i tak, e by operace
** neprovdla nic, ale v ppad pouit takto definovan abstrakce by se
** obtn odhalovaly chyby v algoritmech, kter by abstrakci vyuvaly.
**
** Pi implementaci vyuijte dve definovanch funkc queueFull a nextIndex.
*/
if(queueFull(q) == 0)
{
q->arr[q->b_index] = c;
q->b_index = nextIndex(q->b_index);
}
else
{
queueError(QERR_UP);
}
}
