void StreamingControlWidget::StartCameraStreaming()
{
VideoDevices tList = mVideoWorker->GetPossibleDevices();
VideoDevices::iterator tIt;
QString tSelectedDevice = "";
for (tIt = tList.begin(); tIt != tList.end(); tIt++)
{
if (tIt->Type == Camera)
{
tSelectedDevice = QString(tIt->Name.c_str());
break;
}
}
// found something?
if (tSelectedDevice == "")
{
ShowWarning("Missing camera", "No camera available. Please, select another source!");
return;
}
LOG(LOG_VERBOSE, "Selecting %s", tSelectedDevice.toStdString().c_str());
mVideoWorker->SetCurrentDevice(tSelectedDevice);
if (mVideoWorker->SupportsMultipleInputStreams())
SetVideoInputSelectionVisible();
else
SetVideoInputSelectionVisible(false);
}
void MediaSourceDesktop::getVideoDevices(VideoDevices &pVList)
{
static bool tFirstCall = true;
VideoDeviceDescriptor tDevice;
#ifdef MSD_DEBUG_PACKETS
tFirstCall = true;
#endif
if (tFirstCall)
LOG(LOG_VERBOSE, "Enumerating hardware..");
//#############################
//### screen segment
//#############################
tDevice.Name = MSD_DESKTOP_SEGMENT;
tDevice.Card = "segment";
#ifdef APPLE
tDevice.Desc = "OSX Cocoa based screen segment capturing";
#else
tDevice.Desc = "Qt based screen segment capturing";
#endif
if (tFirstCall)
LOG(LOG_VERBOSE, "Found video device: %s (card: %s)", tDevice.Name.c_str(), tDevice.Card.c_str());
pVList.push_back(tDevice);
tFirstCall = false;
}
void MediaSourceFile::getVideoDevices(VideoDevices &pVList)
{
VideoDeviceDescriptor tDevice;
tDevice.Name = mDesiredDevice;
tDevice.Card = mDesiredDevice;
tDevice.Desc = "file source: \"" + mDesiredDevice + "\"";
pVList.push_back(tDevice);
}
void MediaSourceDesktop::getVideoDevices(VideoDevices &pVList)
{
static bool tFirstCall = true;
VideoDeviceDescriptor tDevice;
#ifdef MSD_DEBUG_PACKETS
tFirstCall = true;
#endif
if (tFirstCall)
LOG(LOG_VERBOSE, "Enumerating hardware..");
//#############################
//### screen segment
//#############################
tDevice.Name = MEDIA_SOURCE_DESKTOP;
tDevice.Card = "segment";
#ifdef APPLE
tDevice.Desc = "OSX Cocoa based screen segment capturing";
#else
tDevice.Desc = "Qt based screen segment capturing";
#endif
if (tFirstCall)
LOG(LOG_VERBOSE, "Found video device: %s (card: %s)", tDevice.Name.c_str(), tDevice.Card.c_str());
pVList.push_back(tDevice);
QDesktopWidget *tDesktop = QApplication::desktop();
if (tDesktop != NULL)
{
if (tFirstCall)
{
LOG(LOG_VERBOSE, "Desktop found..");
LOG(LOG_VERBOSE, " ..resolution: %d * %d", tDesktop->width(), tDesktop->height());
LOG(LOG_VERBOSE, " ..screens: %d", tDesktop->numScreens());
LOG(LOG_VERBOSE, " ..virtualized: %d", tDesktop->isVirtualDesktop());
}
for (int i = 0; i < tDesktop->numScreens(); i++)
{
QWidget *tScreen = tDesktop->screen(i);
if (tFirstCall)
{
LOG(LOG_VERBOSE, " ..screen %d: resolution=%d*%d, available resolution=%d*%d, position=(%d, %d)", i, tDesktop->screenGeometry(i).width(), tDesktop->screenGeometry(i).height(), tDesktop->availableGeometry(i).width(), tDesktop->availableGeometry(i).height(), tDesktop->screenGeometry(i).x(), tDesktop->screenGeometry(i).y());
}
}
}
tFirstCall = false;
}
QString MediaSourceGrabberThread::GetDeviceDescription(QString pName)
{
if (mMediaSource->GetMediaType() == MEDIA_VIDEO)
{
VideoDevices::iterator tIt;
VideoDevices tVList;
mMediaSource->getVideoDevices(tVList);
for (tIt = tVList.begin(); tIt != tVList.end(); tIt++)
if (pName.toStdString() == tIt->Name)
return QString(tIt->Desc.c_str());
}else if (mMediaSource->GetMediaType() == MEDIA_AUDIO)
{
AudioDevices::iterator tIt;
AudioDevices tVList;
mMediaSource->getAudioDevices(tVList);
for (tIt = tVList.begin(); tIt != tVList.end(); tIt++)
if (pName.toStdString() == tIt->Name)
return QString(tIt->Desc.c_str());
}
return "";
}
void MediaSourceVFW::getVideoDevices(VideoDevices &pVList)
{
static bool tFirstCall = true;
HWND tWinHandle = NULL;
int tRes;
VideoDeviceDescriptor tDevice;
#ifdef MSVFW_DEBUG_PACKETS
tFirstCall = true;
#endif
if (tFirstCall)
{
mFoundVFWDevices.clear();
LOG(LOG_VERBOSE, "Enumerating hardware..");
// windows supports up to 10 drivers which are indexed from 0 to 9
//HINT: http://msdn.microsoft.com/en-us/library/dd756909%28VS.85%29.aspx
char tDriverName[256];
char tDriverVersion[32];
for (int i = 0; i < 10; i++)
{
//####################################
//### verbose output and store device description
//####################################
if (capGetDriverDescription(i, tDriverName, 256, tDriverVersion, 32))
{
LOG(LOG_INFO, "Found active VFW device %d", i);
LOG(LOG_INFO, " ..name: %s", tDriverName);
LOG(LOG_INFO, " ..version: %s", tDriverVersion);
tDevice.Name = string(tDriverName);
tDevice.Card = (char)i + 48;
tDevice.Desc = "VFW based video device " + tDevice.Card + " \"" + string(tDriverName) + "\"";
tDevice.Type = Camera; // assume all as camera devices
LOG(LOG_VERBOSE, "Found video device: %s (card: %s)", tDevice.Name.c_str(), tDevice.Card.c_str());
}
//##############################################
//### probe device by creating a capture window
//##############################################
tWinHandle = capCreateCaptureWindow(NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, 0);
if(!tWinHandle)
{
LOG(LOG_INFO, "Could not create capture window");
continue;
}
tRes = SendMessage(tWinHandle, WM_CAP_DRIVER_CONNECT, i, 0);
if(!tRes)
{
LOG(LOG_INFO, "Could not connect to device");
mDeviceAvailable[i] = false;
DestroyWindow(tWinHandle);
continue;
}else
mDeviceAvailable[i] = true;
//HINT: maybe our capture frames are upside down, see http://www.microsoft.com/whdc/archive/biheight.mspx -> detect this
BITMAPINFO tInfo;
tRes = capGetVideoFormat(tWinHandle, &tInfo, sizeof(tInfo));
if (!tRes)
{
LOG(LOG_ERROR, "Not connected to the capture window");
DestroyWindow(tWinHandle);
continue;
}
DestroyWindow(tWinHandle);
//###############################################
//### finally add this device to the result list
//###############################################
mFoundVFWDevices.push_back(tDevice);
}
}else
{
LOG(LOG_VERBOSE, "Using internal device cache with %d entries", (int)mFoundVFWDevices.size());
}
tFirstCall = false;
VideoDevices::iterator tIt;
for (tIt = mFoundVFWDevices.begin(); tIt != mFoundVFWDevices.end(); tIt++)
{
pVList.push_back(*tIt);
}
}
