bool AcquireImages(CamInfo* cams, int numCams)
{
int i;
PvResult result;
// Initialize Camera System
PvSystem system;
system.SetDetectionTimeout(2000);
result = system.Find();
if(!result.IsOK()){
printf("PvSystem::Find Error: %s", result.GetCodeString().GetAscii());
return false;
}
PvDevice lDevice[numCams];
PvGenParameterArray *lDeviceParams[numCams];
PvStream lStream[numCams];
PvPipeline *lPipeline[numCams];
for(i=0; i < numCams; i++){
PvDeviceInfo* lDeviceInfo = NULL;
PvDeviceInfo* tempInfo;
// Get the number of GEV Interfaces that were found using GetInterfaceCount.
PvUInt32 lInterfaceCount = system.GetInterfaceCount();
// For each interface, check MAC Address against passed address
for( PvUInt32 x = 0; x < lInterfaceCount; x++ )
{
// get pointer to each of interface
PvInterface * lInterface = system.GetInterface( x );
// Get the number of GEV devices that were found using GetDeviceCount.
PvUInt32 lDeviceCount = lInterface->GetDeviceCount();
for( PvUInt32 y = 0; y < lDeviceCount ; y++ )
{
tempInfo = lInterface->GetDeviceInfo( y );
if(strlen(cams[i].MACAddress) == strlen(tempInfo->GetMACAddress().GetAscii()) && strncmp(cams[i].MACAddress,tempInfo->GetMACAddress().GetAscii(),strlen(cams[i].MACAddress)) == 0){
lDeviceInfo = tempInfo;
break;
}
}
}
// If no device is selected, abort
if( lDeviceInfo == NULL )
{
printf( "No device selected.\n" );
return false;
}
// Connect to the GEV Device
printf( "Connecting to %s\n", lDeviceInfo->GetMACAddress().GetAscii() );
if ( !lDevice[i].Connect( lDeviceInfo ).IsOK() )
{
printf( "Unable to connect to %s\n", lDeviceInfo->GetMACAddress().GetAscii() );
return false;
}
printf( "Successfully connected to %s\n", lDeviceInfo->GetMACAddress().GetAscii() );
printf( "\n" );
// Get device parameters need to control streaming
lDeviceParams[i] = lDevice[i].GetGenParameters();
// Negotiate streaming packet size
lDevice[i].NegotiatePacketSize();
// Open stream - have the PvDevice do it for us
printf( "Opening stream to device\n" );
lStream[i].Open( lDeviceInfo->GetIPAddress() );
// Create the PvPipeline object
lPipeline[i] = new PvPipeline( &lStream[i] );
// Reading payload size from device
PvInt64 lSize = 0;
lDeviceParams[i]->GetIntegerValue( "PayloadSize", lSize );
// Set the Buffer size and the Buffer count
lPipeline[i]->SetBufferSize( static_cast<PvUInt32>( lSize ) );
lPipeline[i]->SetBufferCount( 16 ); // Increase for high frame rate without missing block IDs
// Have to set the Device IP destination to the Stream
lDevice[i].SetStreamDestination( lStream[i].GetLocalIPAddress(), lStream[i].GetLocalPort() );
}
PvGenParameterArray *lStreamParams[numCams];
for(i=0; i < numCams; i++){
// IMPORTANT: the pipeline needs to be "armed", or started before
// we instruct the device to send us images
printf( "Starting pipeline %d\n",i);
lPipeline[i]->Start();
// Get stream parameters/stats
lStreamParams[i] = lStream[i].GetParameters();
// TLParamsLocked is optional but when present, it MUST be set to 1
// before sending the AcquisitionStart command
lDeviceParams[i]->SetIntegerValue( "TLParamsLocked", 1 );
printf( "Resetting timestamp counter...\n" );
lDeviceParams[i]->ExecuteCommand( "GevTimestampControlReset" );
// The pipeline is already "armed", we just have to tell the device
// to start sending us images
printf( "Sending StartAcquisition command to device\n" );
lDeviceParams[i]->ExecuteCommand( "AcquisitionStart" );
}
char lDoodle[] = "|\\-|-/";
int lDoodleIndex = 0;
PvInt64 lImageCountVal = 0;
double lFrameRateVal = 0.0;
double lBandwidthVal = 0.0;
PvInt64 lPipelineBlocksDropped = 0;
// Acquire images until the user instructs us to stop
printf( "\n<press the enter key to stop streaming>\n" );
//PvBufferWriter writer;
char filePath[MAXFILEPATH];
PvUInt32 lWidth = 4096, lHeight = 9250;
while ( running )
{
for(i=0; i < numCams; i++){
// Retrieve next buffer
PvBuffer *lBuffer = NULL;
PvResult lOperationResult;
PvResult lResult = lPipeline[i]->RetrieveNextBuffer( &lBuffer, 1000, &lOperationResult );
if ( lResult.IsOK() )
{
if ( lOperationResult.IsOK() )
{
lStreamParams[i]->GetIntegerValue( "ImagesCount", lImageCountVal );
lStreamParams[i]->GetFloatValue( "AcquisitionRateAverage", lFrameRateVal );
lStreamParams[i]->GetFloatValue( "BandwidthAverage", lBandwidthVal );
lStreamParams[i]->GetIntegerValue("PipelineBlocksDropped", lPipelineBlocksDropped);
filePath[0] = '\0';
sprintf(filePath,"%s/%s%04X.tif",cams[i].filename,cams[i].prefix,lBuffer->GetBlockID());
TIFF *out = TIFFOpen(filePath,"w");
TIFFSetField(out, TIFFTAG_IMAGEWIDTH, lWidth);
TIFFSetField(out, TIFFTAG_IMAGELENGTH, lHeight);
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
TIFFSetField(out, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
TIFFWriteEncodedStrip(out,0,lBuffer->GetDataPointer(),lWidth*lHeight);
TIFFClose(out);
printf( "%d:%s%c Timestamp: %016llX BlockID: %04X %.01f FPS %d DROP %.01f Mb/s\r\n",i,
cams[i].prefix,
lDoodle[ lDoodleIndex ],
lBuffer->GetTimestamp(),
lBuffer->GetBlockID(),
lFrameRateVal,
lPipelineBlocksDropped,
lBandwidthVal / 1000000.0 );
} else {
printf("%d: ERROR Code: %s, Description: %s\r\n",i,lOperationResult.GetCodeString().GetAscii(),lOperationResult.GetDescription().GetAscii());
}
// We have an image - do some processing (...)
// VERY IMPORTANT:
// release the buffer back to the pipeline
lPipeline[i]->ReleaseBuffer( lBuffer );
usleep(200);
}
else
{
// Timeout
printf( "%d:%s%c Timeout\r\n",i, cams[i].prefix,lDoodle[ lDoodleIndex ]);
}
}
++lDoodleIndex %= 6;
}
//_getch(); // Flush key buffer for next stop
printf( "\n\n" );
for(i=0; i < numCams; i++){
// Tell the device to stop sending images
printf( "Sending AcquisitionStop command to the device\n" );
lDeviceParams[i]->ExecuteCommand( "AcquisitionStop" );
// If present reset TLParamsLocked to 0. Must be done AFTER the
// streaming has been stopped
lDeviceParams[i]->SetIntegerValue( "TLParamsLocked", 0 );
// We stop the pipeline - letting the object lapse out of
// scope would have had the destructor do the same, but we do it anyway
printf( "Stop pipeline\n" );
lPipeline[i]->Stop();
delete lPipeline[i];
// Now close the stream. Also optionnal but nice to have
printf( "Closing stream\n" );
lStream[i].Close();
// Finally disconnect the device. Optional, still nice to have
printf( "Disconnecting device\n" );
lDevice[i].Disconnect();
}
return true;
}
int main( int aCount, const char ** aArgs )
{
// Creates default configuration, parse command line parameters
Config lConfig;
lConfig.ParseCommandLine( aCount, aArgs );
// Create video source (pattern generator)
VideoSource lSource;
// Get video source properties
PvUInt32 lWidth = lConfig.GetWidth();
PvUInt32 lHeight = lConfig.GetHeight();
PvPixelType lPixelFormat = PvPixelMono8;
PvUInt32 lSize = lWidth * lHeight;
// Allocate transmit buffers
PvBufferList lBuffers;
PvBufferList lFreeBuffers;
for ( PvUInt32 i = 0; i < lConfig.GetBufferCount(); i++ )
{
// Alloc new buffer
PvBuffer *lBuffer = new PvBuffer();
lBuffer->GetImage()->Alloc( lWidth, lHeight, lPixelFormat );
// Set to 0
memset( lBuffer->GetDataPointer(), 0x00, lSize );
// Add to both buffer list and free buffer list
lBuffers.push_back( lBuffer );
lFreeBuffers.push_back( lBuffer );
}
// Create transmitter, set packet size
PvTransmitterRaw lTransmitter;
lTransmitter.SetPacketSize( lConfig.GetPacketSize() );
// Create virtual device (used for discovery)
PvVirtualDevice lDevice;
lDevice.StartListening( lConfig.GetSourceAddress() );
cout << "Listening for device discovery requests on " << lConfig.GetSourceAddress() << endl;
// Open transmitter - sets destination and source
PvResult lResult = lTransmitter.Open(
lConfig.GetDestinationAddress(), lConfig.GetDestinationPort(),
lConfig.GetSourceAddress(), lConfig.GetSourcePort() );
if ( !lResult.IsOK() )
{
cout << "Failed to open a connection to the transmitter." << endl;
return 1;
}
cout << "Transmission stream opened:" << endl;
cout << "Source: " << lTransmitter.GetSourceIPAddress().GetAscii() << " port " << lTransmitter.GetSourcePort() << endl;
cout << "Destination: " << lConfig.GetDestinationAddress() << " port " << lConfig.GetDestinationPort() << endl;
if ( !lConfig.GetSilent() )
{
cout << "Press any key to begin transmitting.\r";
PvWaitForKeyPress();
}
cout << "Press any key to stop transmitting." << endl;
// Set maximum throughput (just to even out traffic, as we control throughput at the source)
if ( lConfig.GetFPS() != 0 )
{
// Multiply image size (in bits) by FPS
float lMax = static_cast<float>( lSize ) * 8;
lMax *= lConfig.GetFPS();
// Since we control throughput at the source, make sure maximum throughput is slightly
// higher than what we need. We want to even out packet traffic, not slow down source frame rate
lMax *= 1.1f;
// Set max throughput
lTransmitter.SetMaxPayloadThroughput( lMax );
}
char lDoodle[] = "|\\-|-/";
int lDoodleIndex = 0;
// Reset transmitter stats
lTransmitter.ResetStats();
// Used to transmit at a steady frame rate
PvFPSStabilizer lStabilizer;
// Acquisition/transmission loop
while( !PvKbHit() )
{
// Step 1: If timing is right to meet desired FPS, generate pattern, transmit
if ( ( lConfig.GetFPS() == 0 ) || lStabilizer.IsTimeToDisplay( (PvUInt32)lConfig.GetFPS() ) )
{
// Are there buffers available for transmission?
if ( lFreeBuffers.size() > 0 )
{
// Retrieve buffer from list
PvBuffer *lBuffer = lFreeBuffers.front();
lFreeBuffers.pop_front();
// Generate the test pattern (if needed)
if ( !lConfig.GetNoPattern() )
{
lSource.CopyPattern( lBuffer );
}
// Queue the buffer for transmission
lTransmitter.QueueBuffer( lBuffer );
}
}
// Step 2: Retrieve free buffer(s), display stats and requeue
PvBuffer *lBuffer = NULL;
while ( lTransmitter.RetrieveFreeBuffer( &lBuffer, 0 ).IsOK() )
{
// Queue buffers back in available buffer list
lFreeBuffers.push_back( lBuffer );
// Buffer transmission complete, dislay stats
cout << fixed << setprecision( 1 );
cout << lDoodle[ lDoodleIndex ] << " ";
cout << "Transmitted " << lTransmitter.GetBlocksTransmitted() << " blocks ";
cout << "at " << lTransmitter.GetAverageTransmissionRate() << " ";
cout << "(" << lTransmitter.GetInstantaneousTransmissionRate() << ") FPS ";
cout << lTransmitter.GetAveragePayloadThroughput() / 1000000.0f << " ";
cout << "(" << lTransmitter.GetInstantaneousPayloadThroughput() / 1000000.0f << ") Mb/s \r";
++lDoodleIndex %= 6;
}
}
// Close transmitter (will also abort buffers)
lTransmitter.Close();
// Free buffers
PvBufferList::iterator lIt = lBuffers.begin();
while ( lIt != lBuffers.end() )
{
delete ( *lIt );
lIt++;
}
// Stop virtual device
lDevice.StopListening();
}