// wait for a camera to be plugged
void WaitForCamera()
{
printf("waiting for a camera");
while(!PvCameraCount())
{
printf(".");fflush(stdout);
Sleep(250);
}
printf("\n");
}
// wait for camera to be plugged in
void WaitForCamera()
{
printf("Waiting for a camera ");
while((PvCameraCount() == 0) && !GCamera.Abort)
{
printf(".");
Sleep(250);
}
printf("\n");
}
//
// idlPvCameraCount
//
// Return the number of cameras attached to the PvAPI system.
//
// command line arguments
// argv[0]: IN/FLAG debug
int idlPvCameraCount (int argc, char *argv[])
{
unsigned long count;
debug = *(IDL_INT *) argv[0];
count = PvCameraCount();
return (int) count;
}
// wait for a camera to be plugged
void waitForCamera() {
cout << "waiting for a camera (10s)";
int index = 0;
while (!PvCameraCount() && index < 40) {
cout << "." << flush;
msleep(250);
index++;
}
cout << endl;
if (index == 40)
throw "failed to find a camera\n";
}
bool OmniCamera::connect(void) {
if(isConnected())
return true;
tPvCameraInfoEx info[1];
unsigned long frameSize = 0;
//PvLinkCallbackRegister(CameraEventCB,ePvLinkAdd,NULL);
//PvLinkCallbackRegister(CameraEventCB,ePvLinkRemove,NULL);
if(!PvInitialize()) {
while(!PvCameraCount())
Sleep(250);
unsigned long numCameras = PvCameraListEx(info, 1, NULL, sizeof(tPvCameraInfoEx));;
if ((numCameras == 1) && (info[0].PermittedAccess & ePvAccessMaster)) {
_camera.UID = info[0].UniqueId;
if(!PvCameraOpen(_camera.UID, ePvAccessMaster, &(_camera.handle))) {
if(!PvAttrUint32Get(_camera.handle,"TotalBytesPerFrame",&frameSize)) {
_camera.frame.ImageBuffer = new char[frameSize];
unsigned long format=0;
PvAttrEnumSet(_camera.handle,"PixelFormat","Bayer8");
char text[100];
PvAttrEnumGet(_camera.handle,"PixelFormat",text,sizeof(text),&format);
printf("format %d %s\n",format,text);
if(_camera.frame.ImageBuffer) {
_camera.frame.ImageBufferSize = frameSize;
PvAttrUint32Get(_camera.handle,"Width",&_width);
PvAttrUint32Get(_camera.handle,"Height",&_height);
PvCaptureStart(_camera.handle);
PvAttrEnumSet(_camera.handle, "AcquisitionMode", "Continuous");
PvCommandRun(_camera.handle, "AcquisitionStart");
_connected = true;
return true;
}
}
}
}
}
_connected = false;
return false;
}
//--------------------------------------------------------------------
bool ofxVideoGrabberPvAPI::initGrabber(int w, int h, bool setUseTexture){
width = w;
height = h;
tPvErr ret; //PvAPI return codes
bUseTexture = setUseTexture;
memset( &cameraUID, 0, sizeof(cameraUID) );
memset( &cameraHandle, 0, sizeof(cameraHandle) );
memset( &cameraFrame, 0, sizeof(cameraFrame) );
//---------------------------------- 1 - open the sequence grabber
// lazy initialization of the Prosilica API
if( !bPvApiInitiated ){
ret = PvInitialize();
if( ret == ePvErrSuccess ) {
ofLog(OF_LOG_VERBOSE, "PvAPI initialized");
} else {
ofLog(OF_LOG_ERROR, "unable to initialize PvAPI");
return false;
}
bPvApiInitiated = true;
}
//---------------------------------- 3 - buffer allocation
// Create a buffer big enough to hold the video data,
// make sure the pointer is 32-byte aligned.
// also the rgb image that people will grab
pixels = new unsigned char[width*height];
// check for any cameras plugged in
int waitIterations = 0;
while( PvCameraCount() < 1 ) {
ofSleepMillis(250);
waitIterations++;
if( waitIterations > 8 ) {
ofLog(OF_LOG_ERROR, "error: no camera found");
return false;
}
}
//---------------------------------- 4 - device selection
tPvUint32 count, connected;
tPvCameraInfo list[maxConcurrentCams];
count = PvCameraList( list, maxConcurrentCams, &connected );
if(count >= 1) {
bool bSelectedDevicePresent = false;
if(bChooseDevice) {
//check if selected device is available
for( int i=0; i<count; ++i) {
if( deviceID == list[i].UniqueId ) {
bSelectedDevicePresent = true;
cameraUID = list[i].UniqueId;
}
}
}
if( !bSelectedDevicePresent ){
cameraUID = list[0].UniqueId;
ofLog(OF_LOG_NOTICE, "cannot find selected camera -> defaulting to first available");
ofLog(OF_LOG_VERBOSE, "there is currently an arbitrary hard limit of %i concurrent cams", maxConcurrentCams);
}
} else {
ofLog(OF_LOG_ERROR, "no cameras available");
return false;
}
//---------------------------------- 5 - final initialization steps
ret = PvCameraOpen( cameraUID, ePvAccessMaster, &cameraHandle );
if( ret == ePvErrSuccess ){
ofLog(OF_LOG_VERBOSE, "camera opened");
} else {
if( ret == ePvErrAccessDenied ) {
ofLog(OF_LOG_ERROR, "camera access denied, probably already in use");
}
ofLog(OF_LOG_ERROR, "failed to open camera");
return false;
}
unsigned long FrameSize = 0;
ret = PvAttrUint32Get( cameraHandle, "TotalBytesPerFrame", &FrameSize );
if( ret == ePvErrSuccess ){
// allocate the buffer for the single frame we need
cameraFrame.ImageBuffer = new char[FrameSize];
cameraFrame.ImageBufferSize = FrameSize;
ofLog(OF_LOG_VERBOSE, "camera asked for TotalBytesPerFrame");
} else {
ofLog(OF_LOG_ERROR, "failed to allocate capture buffer");
return false;
}
ret = PvCaptureStart(cameraHandle);
if( ret == ePvErrSuccess ){
ofLog(OF_LOG_VERBOSE, "camera set to capture mode");
} else {
if( ret == ePvErrUnplugged ){
ofLog(OF_LOG_ERROR, "cannot start capture, camera was unplugged");
}
ofLog(OF_LOG_ERROR, "cannot set to capture mode");
return false;
}
ret = PvAttrEnumSet(cameraHandle,"FrameStartTriggerMode","Freerun");
if( ret == ePvErrSuccess ){
ofLog(OF_LOG_VERBOSE, "camera set to continuous mode");
} else {
ofLog(OF_LOG_ERROR, "cannot set to continous mode");
return false;
}
ret = PvCommandRun(cameraHandle,"AcquisitionStart");
if( ret == ePvErrSuccess ){
ofLog(OF_LOG_VERBOSE, "camera continuous acquisition started");
} else {
// if that fail, we reset the camera to non capture mode
PvCaptureEnd(cameraHandle) ;
ofLog(OF_LOG_ERROR, "cannot start continuous acquisition");
return false;
}
bGrabberInited = true;
//loadSettings();
ofLog(OF_LOG_NOTICE,"camera is ready now");
//---------------------------------- 6 - setup texture if needed
if (bUseTexture){
// create the texture, set the pixels to black and
// upload them to the texture (so at least we see nothing black the callback)
tex.allocate(width,height,GL_LUMINANCE);
memset(pixels, 0, width*height);
tex.loadData(pixels, width, height, GL_LUMINANCE);
}
// we are done
return true;
}
