Ejemplo n.º 1
0
void PleoraVideo::InitStream()
{
    // Setup Stream
    PvResult lResult;
    lStream = PvStream::CreateAndOpen( lDeviceInfo->GetConnectionID(), &lResult );
    if ( !lStream ) {
        DeinitDevice();
        throw pangolin::VideoException("Pleora: Unable to open stream", lResult.GetDescription().GetAscii() );
    }
    lStreamParams = lStream->GetParameters();
}
Ejemplo n.º 2
0
void PleoraVideo::InitDevice(
        const char* model_name, const char* serial_num, size_t index
) {
    lPvSystem = new PvSystem();
    if ( !lPvSystem ) {
        throw pangolin::VideoException("Pleora: Unable to create PvSystem");
    }

    lDeviceInfo = SelectDevice(*lPvSystem, model_name, serial_num, index);
    if ( !lDeviceInfo ) {
        delete lPvSystem;
        throw pangolin::VideoException("Pleora: Unable to select device");
    }

    PvResult lResult;
    lDevice = PvDevice::CreateAndConnect( lDeviceInfo, &lResult );
    if ( !lDevice ) {
        delete lPvSystem;
        throw pangolin::VideoException("Pleora: Unable to connect to device", lResult.GetDescription().GetAscii() );
    }

    lDeviceParams = lDevice->GetParameters();
}
Ejemplo n.º 3
0
int main( int aCount, const char ** aArgs )
{
    char lDeviceAddress[1024];
    char lMulticastAddress[1024];
    char lLocalAddress[1024];

    memset( lLocalAddress, 0, 1024 );
    sprintf( lMulticastAddress, "239.192.1.1" );
    memset( lDeviceAddress, 0, 1024 );

    bool lPassive = true;
    PvUInt32 lChannel = 0;
    PvUInt16 lHostPort = 1042;
    PvResult lResult;
    for ( int i=1; i<aCount; i++ )
	{
		std::string lString = aArgs[i];
        if ( lString.find( "--hostport" ) != std::string::npos )
        {
            sscanf( aArgs[i], "--hostport=%d", &lHostPort );
        }
        else if ( lString.find( "--localaddress" ) != std::string::npos )
        {
            sscanf( aArgs[i], "--localaddress=%s", lLocalAddress );
        }
        else if ( lString.find( "--multicastaddress" ) != std::string::npos )
        {
            sscanf( aArgs[i], "--multicastaddress=%s", lMulticastAddress );
        }
        else if ( lString.find( "--deviceaddress" ) != std::string::npos )
        {
            sscanf( aArgs[i], "--deviceaddress=%s", lDeviceAddress );
        }
        else if ( lString.find( "--unicast" ) != std::string::npos )
        {
            memset( lMulticastAddress, 0, 1024 );
        }
        else if ( lString.find( "--connectdevice" ) != std::string::npos )
        {
            lPassive = false;
        }
        else if ( lString.find( "--channel" ) != std::string::npos )
        {
            sscanf( aArgs[i], "--channel=%d", &lChannel );
        }
        else if ( lString.find( "--help" ) != std::string::npos )
        {
            PrintHelp();
            return 0;
        }
        else
        {
            printf( "Did not recognize argument %s\n", aArgs[i] );
            PrintHelp();
            return 1;
        }
    }

    if ( strlen( lDeviceAddress ) == 0 )
    {
        // No device address specified. Prompt with the device finder.
        PvDeviceFinderWnd lWnd;
        if ( !lWnd.ShowModal().IsOK() )
        {
            printf( "No GEV device selected.\n" );
            return 1;
        }
        PvDeviceInfo* lInfo = lWnd.GetSelected();
        sprintf( lDeviceAddress, "%s", lInfo->GetIPAddress().GetAscii() );
    }

    PvStream lStream;

    if ( strlen( lMulticastAddress ) == 0 )
    {
        lResult = lStream.Open( lDeviceAddress, lHostPort, lChannel, lLocalAddress );
        printf( "Receiving from device %s on interface %s:%d\n", 
            lDeviceAddress, lStream.GetLocalIPAddress().GetAscii(), lStream.GetLocalPort() );
    }
    else
    {
        lResult = lStream.Open( lDeviceAddress, lMulticastAddress, lHostPort, lChannel, lLocalAddress );
        printf( "Receiving from multicast address %s:%d (device %s) on interface %s:%d\n",
            lMulticastAddress, lHostPort, lDeviceAddress, lStream.GetLocalIPAddress().GetAscii(), lStream.GetLocalPort() );
    }

    if ( !lResult.IsOK() )
    {
        printf( "Failed opening the incoming stream: %s\n", lResult.GetDescription().GetAscii() );
        return 1;
    }

    PvPipeline lPipeline( &lStream );

    PvDevice lDevice;
    PvGenParameterArray *lDeviceParams = NULL;
    if ( !lPassive )
    {
        lResult = lDevice.Connect( lDeviceAddress );
        if ( !lResult.IsOK() )
        {
            printf( "Failed connecting to the device to set its destination and initiate an AcquisitionStart: %s\n", 
                lResult.GetDescription().GetAscii() );
            printf( "If the eBUS Transmitter to receive from doesn't have full device capabilities, add the --passive command line option and initiate streaming manually.\n" );
            return 1;
        }
        lDevice.SetStreamDestination( lStream.GetLocalIPAddress(), lStream.GetLocalPort(), lChannel );
            
        // Get device parameters need to control streaming
        lDeviceParams = lDevice.GetGenParameters();

        // Reading payload size from device. Otherwise, the pipeline may miss the first several images.
        PvInt64 lReceivePayloadSize = 0;
	    lDeviceParams->GetIntegerValue( "PayloadSize", lReceivePayloadSize );

        // Set the Buffer size and the Buffer count
        lPipeline.SetBufferSize( static_cast<PvUInt32>( lReceivePayloadSize ) );
    }

    lPipeline.SetBufferCount( 16 ); // Increase for high frame rate without missing block IDs
    lPipeline.Start();

    if ( !lPassive )
    {
        // TLParamsLocked is optional but when present, it MUST be set to 1
        // before sending the AcquisitionStart command
	    lDeviceParams->SetIntegerValue( "TLParamsLocked", 1 );

	    lDeviceParams->ExecuteCommand( "GevTimestampControlReset" );

        // The pipeline is already "armed", we just have to tell the device
        // to start sending us images
	    lDeviceParams->ExecuteCommand( "AcquisitionStart" );
    }
    
    // Get stream parameters/stats
    PvGenParameterArray *lStreamParams = lStream.GetParameters();

    printf( "Press any key to stop receiving.  \n" );

    char lDoodle[] = "|\\-|-/";
    int lDoodleIndex = 0;
    PvInt64 lImageCountVal = 0;
    double lFrameRateVal = 0.0;
    double lBandwidthVal = 0.0;

    while ( !PvKbHit() )
    {
        PvBuffer *lBuffer = NULL;
        PvResult  lOperationResult;
        PvResult lResult = lPipeline.RetrieveNextBuffer( &lBuffer, 1000, &lOperationResult );
        
        if ( lResult.IsOK() )
        {
            if ( lOperationResult.IsOK() )
            {
                //
                // We now have a valid buffer. This is where you would typically process the buffer.
                // -----------------------------------------------------------------------------------------
                // ...

                lStreamParams->GetIntegerValue( "ImagesCount", lImageCountVal );
                lStreamParams->GetFloatValue( "AcquisitionRateAverage", lFrameRateVal );
                lStreamParams->GetFloatValue( "BandwidthAverage", lBandwidthVal );

                printf( "%c BlockID: %016llX %.01f FPS %.01f Mb/s\r", 
                    lDoodle[ lDoodleIndex ],
                    lBuffer->GetBlockID(),
                    lFrameRateVal,
                    lBandwidthVal / 1000000.0 ); 
            }
            // We have an image - do some processing (...) and VERY IMPORTANT,
            // release the buffer back to the pipeline
            lPipeline.ReleaseBuffer( lBuffer );
        }
        else
        {
            printf( "%c Timeout\r", lDoodle[ lDoodleIndex ] );
        }

        ++lDoodleIndex %= 6;
    }
}
Ejemplo n.º 4
0
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;
}
Ejemplo n.º 5
0
void PleoraVideo::SetDeviceParams(Params& p) {

    lStart = dynamic_cast<PvGenCommand*>( lDeviceParams->Get( "AcquisitionStart" ) );
    lStop = dynamic_cast<PvGenCommand*>( lDeviceParams->Get( "AcquisitionStop" ) );

    for(Params::ParamMap::iterator it = p.params.begin(); it != p.params.end(); it++) {
        if(it->first == "get_temperature"){
            getTemp = p.Get<bool>("get_temperature",false);
        } else {
            if (it->second == "Execute") {
              // This is a command, deal with it accordingly.
              PvGenCommand* cmd = dynamic_cast<PvGenCommand*>(lDeviceParams->Get(it->first.c_str()));
              if(cmd) {
                  PvResult r = cmd->Execute();
                  if(!r.IsOK()){
                      pango_print_error("Error executing command %s Reason:%s\n", it->first.c_str(), r.GetDescription().GetAscii());
                  } else {
                      pango_print_info("Executed Command %s\n", it->first.c_str());
                  }
                  bool done;
                  int attempts = 20;
                  do {
                      cmd->IsDone(done);
                      std::this_thread::sleep_for(std::chrono::milliseconds(1000));
                      attempts--;
                  } while(!done && (attempts > 0));
                  if(attempts == 0) {
                      pango_print_error("Timeout while waiting for command %s done\n", it->first.c_str());
                  }
              } else {
                  pango_print_error("Command %s not recognized\n", it->first.c_str());
              }
            } else {
                try {
                    PvGenParameter* par = lDeviceParams->Get(PvString(it->first.c_str()));
                    if(par) {
                        PvResult r = par->FromString(PvString(it->second.c_str()));
                        if(!r.IsOK()){
                            pango_print_error("Error setting parameter %s to:%s Reason:%s\n", it->first.c_str(), it->second.c_str(), r.GetDescription().GetAscii());
                        } else {
                            pango_print_info("Setting parameter %s to:%s\n", it->first.c_str(), it->second.c_str());
                        }
                    } else {
                        pango_print_error("Parameter %s not recognized\n", it->first.c_str());
                    }
                } catch(std::runtime_error e) {
                    pango_print_error("Set parameter %s: %s\n", it->first.c_str(), e.what());
                }
            }
        }
    }

    // Get Handles to properties we'll be using.
    lAnalogGain = lDeviceParams->GetInteger("AnalogGain");
    lGamma = lDeviceParams->GetFloat("Gamma");
    lAnalogBlackLevel = lDeviceParams->GetInteger("AnalogBlackLevel");
    lExposure = lDeviceParams->GetFloat("ExposureTime");
    lAquisitionMode = lDeviceParams->GetEnum("AcquisitionMode");
    lTriggerSource = lDeviceParams->GetEnum("TriggerSource");
    lTriggerMode = lDeviceParams->GetEnum("TriggerMode");

    if(getTemp) {
        lTemperatureCelcius = lDeviceParams->GetFloat("DeviceTemperatureCelsius");
        pango_print_warn("Warning: get_temperature might add a blocking call taking several ms to each frame read.");
    }

}
Ejemplo n.º 6
0
void PleoraVideo::SetParameter(const std::string& name, const std::string& value) {
    PvGenParameter* par = lDeviceParams->Get(PvString(name.c_str()));
    if(par) {
        PvResult r = par->FromString(PvString(value.c_str()));
        if(!r.IsOK()){
            pango_print_error("Error setting parameter %s to:%s Reason:%s\n", name.c_str(), value.c_str(), r.GetDescription().GetAscii());
        } else {
            pango_print_info("Setting parameter %s to:%s\n", name.c_str(), value.c_str());
        }
    } else {
        pango_print_error("Parameter %s not recognized\n", name.c_str());
    }
}
Ejemplo n.º 7
0
PleoraVideo::PleoraVideo(const char* model_name, const char* serial_num, size_t index, size_t bpp,  size_t binX, size_t binY, size_t buffer_count,
                         size_t desired_size_x, size_t desired_size_y, size_t desired_pos_x, size_t desired_pos_y)
    : lPvSystem(0), lDevice(0), lStream(0)
{
    lPvSystem = new PvSystem();
    if ( !lPvSystem ) {
        throw pangolin::VideoException("Pleora: Unable to create PvSystem");
    }

    const PvDeviceInfo *lDeviceInfo = SelectDevice(*lPvSystem, model_name, serial_num, index);
    if ( !lDeviceInfo ) {
        throw pangolin::VideoException("Pleora: Unable to select device");
    }

    PvResult lResult;
    lDevice = PvDevice::CreateAndConnect( lDeviceInfo, &lResult );
    if ( !lDevice ) {
        throw pangolin::VideoException("Pleora: Unable to connect to device", lResult.GetDescription().GetAscii() );
    }

    lStream = PvStream::CreateAndOpen( lDeviceInfo->GetConnectionID(), &lResult );
    if ( !lStream ) {
        lDevice->Disconnect();
        PvDevice::Free(lDevice);
        throw pangolin::VideoException("Pleora: Unable to open stream", lResult.GetDescription().GetAscii() );
    }

    lDeviceParams = lDevice->GetParameters();
    lStart = dynamic_cast<PvGenCommand*>( lDeviceParams->Get( "AcquisitionStart" ) );
    lStop = dynamic_cast<PvGenCommand*>( lDeviceParams->Get( "AcquisitionStop" ) );

    if( bpp == 8) {
        lDeviceParams->SetEnumValue("PixelFormat", PvString("Mono8") );
    }else if(bpp == 10) {
        lDeviceParams->SetEnumValue("PixelFormat", PvString("Mono10p") );
    }else if(bpp == 12) {
        lDeviceParams->SetEnumValue("PixelFormat", PvString("Mono12p") );
    }

    // Height and width will fail if not multiples of 8.
    lDeviceParams->SetIntegerValue("Height", desired_size_y );
    if(lResult.IsFailure()){
        pango_print_error("Height %zu fail\n", desired_size_y);
        int64_t max, min;
        lDeviceParams->GetIntegerRange("Height", max, min );
        lDeviceParams->SetIntegerValue("Height", max );
    }
    lDeviceParams->SetIntegerValue("Width", desired_size_x );
    if(lResult.IsFailure()){
        pango_print_error("Width %zu fail\n", desired_size_x);
        int64_t max, min;
        lDeviceParams->GetIntegerRange("Width", max, min );
        lDeviceParams->SetIntegerValue("Width", max );
    }

    lDeviceParams = lDevice->GetParameters();
    const int w = DeviceParam<int64_t>("Width");
    const int h = DeviceParam<int64_t>("Height");

    // Offset will fail if not multiple of 8.
    lDeviceParams->SetIntegerValue("OffsetX", desired_pos_x );
    if(lResult.IsFailure()){
        pango_print_error("OffsetX %zu fail\n", desired_pos_x);
    }
    lDeviceParams->SetIntegerValue("OffsetX", desired_pos_y );
    if(lResult.IsFailure()){
        pango_print_error("OffsetY %zu fail\n", desired_pos_y);
    }

    lResult =lDeviceParams->SetIntegerValue("BinningHorizontal", binX );
    if(lResult.IsFailure()){
        pango_print_error("BinningHorizontal %zu fail\n", binX);
    }
    lResult =lDeviceParams->SetIntegerValue("BinningVertical", binY );
    if(lResult.IsFailure()){
        pango_print_error("BinningVertical %zu fail\n", binY);
    }

    lStreamParams = lStream->GetParameters();

    // Reading payload size from device
    const uint32_t lSize = lDevice->GetPayloadSize();

    // Use buffer_count or the maximum number of buffers, whichever is smaller
    const uint32_t lBufferCount = ( lStream->GetQueuedBufferMaximum() < buffer_count ) ?
        lStream->GetQueuedBufferMaximum() :
        buffer_count;

    // Allocate buffers and queue
    for ( uint32_t i = 0; i < lBufferCount; i++ )
    {
        PvBuffer *lBuffer = new PvBuffer;
        lBuffer->Alloc( static_cast<uint32_t>( lSize ) );
        lBufferList.push_back( lBuffer );
    }

    // Setup pangolin for stream
    PvGenEnum* lpixfmt = dynamic_cast<PvGenEnum*>( lDeviceParams->Get("PixelFormat") );
    const VideoPixelFormat fmt = PleoraFormat(lpixfmt);
    streams.push_back(StreamInfo(fmt, w, h, (w*fmt.bpp)/8));
    size_bytes = lSize;

    Start();
}