void WidgetSessions::showRelated(const qmf::Data& object, const QString &widget_type, ArrowDirection a)
{
if (!updateAll)
if (this->hasData() && (arrow() != arrowNone)) {
//qDebug("showRelated: %s needs an update", this->objectName().toStdString().c_str());
emit needUpdate();
return;
}
setArrow(a);
if (widget_type == "widgetConnections") {
qpid::types::Variant value = object.getProperty("address");
std::string name = value.asString();
related->setRelatedData("connectionRef", name);
related->clearFilter();
emit needData();
return;
}
// the object is a subscription
qpid::types::Variant value = object.getProperty("sessionRef");
QString name(value.asMap()["_object_name"].asString().c_str());
QString session = name.section(':', -1);
related->setRelatedData("name", session.toStdString());
related->clearFilter();
//qDebug("showRelated: %s needs new data", this->objectName().toStdString().c_str());
emit needData();
}
bool StreamReader::read(quint64 pos, int *length, char *buffer)
{
QMutexLocker lock(&m_mutex);
DEBUG_BLOCK;
bool ret = true;
if (m_unlocked) {
return ret;
}
if (currentPos() != pos) {
if (!streamSeekable()) {
return false;
}
setCurrentPos(pos);
}
if (m_buffer.capacity() < *length) {
m_buffer.reserve(*length);
}
while (currentBufferSize() < static_cast<unsigned int>(*length)) {
quint64 oldSize = currentBufferSize();
needData();
m_waitingForData.wait(&m_mutex);
if (oldSize == currentBufferSize()) {
if (m_eos && m_buffer.isEmpty()) {
return false;
}
// We didn't get any more data
*length = static_cast<int>(oldSize);
// If we have some data to return, why tell to reader that we failed?
// Remember that length argument is more like maxSize not requiredSize
ret = true;
}
}
if (m_mediaObject->state() != Phonon::BufferingState &&
m_mediaObject->state() != Phonon::LoadingState) {
enoughData();
}
memcpy(buffer, m_buffer.data(), *length);
m_pos += *length;
// trim the buffer by the amount read
m_buffer = m_buffer.mid(*length);
return ret;
}
HRESULT read(LONGLONG pos, LONG length, BYTE *buffer, LONG *actual)
{
QMutexLocker locker(&m_mutexRead);
if (m_mediaGraph->isStopping()) {
return VFW_E_WRONG_STATE;
}
if(streamSize() != 1 && pos + length > streamSize()) {
//it tries to read outside of the boundaries
return E_FAIL;
}
if (currentPos() - currentBufferSize() != pos) {
if (!streamSeekable()) {
return S_FALSE;
}
setCurrentPos(pos);
}
int oldSize = currentBufferSize();
while (currentBufferSize() < int(length)) {
needData();
if (m_mediaGraph->isStopping()) {
return VFW_E_WRONG_STATE;
}
if (oldSize == currentBufferSize()) {
break; //we didn't get any data
}
oldSize = currentBufferSize();
}
DWORD bytesRead = qMin(currentBufferSize(), int(length));
{
QWriteLocker locker(&m_lock);
qMemCopy(buffer, m_buffer.data(), bytesRead);
//truncate the buffer
m_buffer = m_buffer.mid(bytesRead);
}
if (actual) {
*actual = bytesRead; //initialization
}
return bytesRead == length ? S_OK : S_FALSE;
}