pylon/gige/ActionTriggerConfiguration.h

An instant camera configuration for triggering via GigE Vision action commands. More…

Namespaces

Name
Pylon Contains definitions of pylon types.

Classes

	Name
class	Pylon::CActionTriggerConfiguration Changes the configuration of the camera so that it is triggered by the first available action command.
struct	Pylon::CActionTriggerConfiguration::ActionParameter

Detailed Description

An instant camera configuration for triggering via GigE Vision action commands.

This instant camera configuration is provided as header-only file. The code can be copied and modified for creating own configuration classes.

Source code

//-----------------------------------------------------------------------------
//  Basler pylon SDK
//  Copyright (c) 2010-2022 Basler AG
//  http://www.baslerweb.com
//  Author: Hartmut Nebelung
//-----------------------------------------------------------------------------
#ifndef INCLUDED_ACTIONTRIGGERCONFIGURATION_H_4655834
#define INCLUDED_ACTIONTRIGGERCONFIGURATION_H_4655834

#include <pylon/Platform.h>

#ifdef _MSC_VER
#   pragma pack(push, PYLON_PACKING)
#endif /* _MSC_VER */

#include <pylon/InstantCamera.h>
#include <pylon/ParameterIncludes.h>
#include <pylon/ConfigurationHelper.h>

namespace Pylon
{
    // Arbitrarily chosen constants for camera selection. For an explanation and
    // tips see the "Multi-Camera Applications and GigE Vision 2.0" White paper
    const uint32_t AllGroupMask( 0xffffffff );  // camera will respond to any mask other than 0

    class CActionTriggerConfiguration : public CConfigurationEventHandler
    {
    public:
        struct ActionParameter
        {
            uint32_t DeviceKey;
            uint32_t GroupKey;
            uint32_t GroupMask;

            ActionParameter()
                : DeviceKey( 0 ), GroupKey( 0 ), GroupMask( AllGroupMask )
            {
            }
            ActionParameter( uint32_t DeviceKey_, uint32_t GroupKey_, uint32_t GroupMask_ = AllGroupMask )
                : DeviceKey( DeviceKey_ ), GroupKey( GroupKey_ ), GroupMask( GroupMask_ )
            {
            }
        };

        // constructors and assignment
        CActionTriggerConfiguration( uint32_t DeviceKey, uint32_t GroupKey, uint32_t GroupMask = AllGroupMask ) :
            m_Parameter( DeviceKey, GroupKey, GroupMask )
        {
        }
        CActionTriggerConfiguration( const ActionParameter& p )
            : m_Parameter( p )
        {
        }
        CActionTriggerConfiguration( const CActionTriggerConfiguration& other ) : CConfigurationEventHandler( other )
        {
            m_Parameter = other.m_Parameter;
        }
        CActionTriggerConfiguration& operator=( const CActionTriggerConfiguration& rhs )
        {
            m_Parameter = rhs.m_Parameter;
            return *this;
        }
        // destructor
        virtual ~CActionTriggerConfiguration()
        {
        }

        static void ApplyConfiguration( GenApi::INodeMap& deviceNodeMap, const ActionParameter& p )
        {
            ApplyConfiguration( deviceNodeMap, p.DeviceKey, p.GroupKey, p.GroupMask );
        }

        static void ApplyConfiguration( GenApi::INodeMap& deviceNodeMap, uint32_t DeviceKey, uint32_t GroupKey, uint32_t GroupMask = AllGroupMask )
        {
            using namespace GenApi;

            //Disable compression mode.
            CConfigurationHelper::DisableCompression( deviceNodeMap );

            //Disable GenDC streaming.
            CConfigurationHelper::DisableGenDC( deviceNodeMap );

            //Select image component.
            CConfigurationHelper::SelectRangeComponent( deviceNodeMap );

            // get the nodes we need and do a check before we start changing the camera configuration

            CIntegerParameter actionDeviceKey( deviceNodeMap, "ActionDeviceKey" );
            CIntegerParameter actionGroupKey( deviceNodeMap, "ActionGroupKey" );
            CIntegerParameter actionGroupMask( deviceNodeMap, "ActionGroupMask" );
            CIntegerParameter actionSelector( deviceNodeMap, "ActionSelector" );

            if (!actionDeviceKey.IsWritable() ||
                 !actionGroupKey.IsWritable() ||
                 !actionGroupMask.IsWritable() ||
                 !actionSelector.IsWritable())
            {
                throw RUNTIME_EXCEPTION( "Device doesn't support action commands. The ActionCommand features are not writable." );
            }

            // Get required enumerations to configure triggering on action commands
            CEnumParameter triggerSelector( deviceNodeMap, "TriggerSelector" );
            CEnumParameter triggerSource( deviceNodeMap, "TriggerSource" );
            CEnumParameter triggerMode( deviceNodeMap, "TriggerMode" );

            // to use triggering we need to switch Continuous Grab
            CEnumParameter acquisitionMode( deviceNodeMap, "AcquisitionMode" );

            if (!triggerSelector.IsWritable() ||
                 !triggerSource.IsWritable() ||
                 !triggerMode.IsWritable())
            {
                throw RUNTIME_EXCEPTION( "Trigger nodes not writable" );
            }

            // Check the available camera trigger mode(s)
            const String_t triggerName( "FrameStart" );
            if (!triggerSelector.CanSetValue( triggerName ))
            {
                throw RUNTIME_EXCEPTION( "Device does not support \"FrameStart\"" );
            }


            if (!acquisitionMode.IsWritable())
            {
                throw RUNTIME_EXCEPTION( "Acquisition mode not writable" );
            }


            // start changing the camera configuration

            // Select the first action (usually "Action 1")
            actionSelector.SetToMinimum();
            String_t selectedAction = GenICam::gcstring( "Action" ) += actionSelector.ToString();


            actionDeviceKey.SetValue( DeviceKey );
            actionGroupKey.SetValue( GroupKey );
            actionGroupMask.SetValue( GroupMask );

            // The goal is to issue a trigger for each single frame. Configure the
            // corresponding trigger mode, disable all other trigger types.
            {

                // Get all settable enumeration entries of Trigger Selector.
                StringList_t triggerSelectorEntries;
                triggerSelector.GetSettableValues( triggerSelectorEntries );

                const String_t originalSelectorValue = triggerSelector.GetValue();

                // Iterate through all available trigger modes, configure the frame start
                // trigger, disable all other trigger types.
                for (StringList_t::const_iterator it = triggerSelectorEntries.begin(); it != triggerSelectorEntries.end(); ++it)
                {
                    // Set Trigger Mode to off if the trigger is available.
                    triggerSelector.SetValue( *it );
                    if (triggerName == *it)
                    {
                        // Activate trigger.
                        triggerMode.SetValue( "On" );

                        // Set the trigger source to the selected action.
                        triggerSource.SetValue( selectedAction );
                    }
                    else
                    {
                        triggerMode.TrySetValue( "Off" );
                    }
                }

                // reset to old value
                triggerSelector.SetValue( originalSelectorValue );
            }

            // Set acquisition mode.
            acquisitionMode.SetValue( "Continuous" );
        }

    private:
        // Apply settings when the camera is opened.
        /* virtual */ void OnOpened( CInstantCamera& camera )
        {
            try
            {
                ApplyConfiguration( camera.GetNodeMap(), m_Parameter );
                // Probe max packet size
                CConfigurationHelper::ProbePacketSize( camera.GetStreamGrabberNodeMap() );
            }
            catch (const GenericException& e)
            {
                throw RUNTIME_EXCEPTION( "Could not apply configuration. Pylon::GenericException caught in OnOpened method msg=%hs", e.what() );
            }
            catch (const std::exception& e)
            {
                throw RUNTIME_EXCEPTION( "Could not apply configuration. std::exception caught in OnOpened method msg=%hs", e.what() );
            }
            catch (...)
            {
                throw RUNTIME_EXCEPTION( "Could not apply configuration. Unknown exception caught in OnOpened method." );
            }
        }

    private:
        ActionParameter m_Parameter;
    };

}

#ifdef _MSC_VER
#   pragma pack(pop)
#endif /* _MSC_VER */

#endif /* INCLUDED_ACTIONTRIGGERCONFIGURATION_H_4655834 */

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Updated on 5 July 2022 at 15:30:01