Source Code for Demo QML Property Filter Plugin

Location

./src/examples/src/adtf/filters/standard_filters/demo_qt_property_extension/

Build Environment

To see how to set up the build environment have a look at ADTF CMake Environment

this implementation shows:

• how to use properties

Header

 
#ifndef _DEMO_POPERTY_QML_EXTENSION_FILTER_H_
#define _DEMO_POPERTY_QML_EXTENSION_FILTER_H_
 
//*************************************************************************************************
#define CID_DEMO_POPERTY_QML_EXTENSION "demo_qml_property.filter.adtf.cid"
 
using namespace adtf_util;
using namespace ddl;
using namespace adtf::ucom;
using namespace adtf::base;
using namespace adtf::streaming;
using namespace adtf::mediadescription;
using namespace adtf::filter;
 
 
class cSimpleFilter : public cFilter
{
public:
    ADTF_CLASS_ID_NAME(cSimpleFilter,
        CID_DEMO_POPERTY_QML_EXTENSION,
        "Demo QML Property Filter");
 
    cSimpleFilter();
    virtual ~cSimpleFilter() = default;
 
    tResult Process(tNanoSeconds tmTimeOfTrigger, IRunner* pRunner) override;
 
private:
 
    property_variable<cFilename> m_propFilename;
    property_variable<cFilenameList> m_propFilenameList;
    property_variable<cFilepath> m_propFilepath;
};
 
 
//*************************************************************************************************
#endif // _DEMO_POPERTY_QML_EXTENSION_FILTER_H_

Implementation

 
#include <adtf3.h>
#include <random>
#include "demo_property_extension.h"
#include <easy/profiler.h>
#include <sstream>
 
ADTF_PLUGIN("Demo Property Qml Extension Plugin", cSimpleFilter);
 
 
//CTOR of the TriggerFuntion
//This is to initialize the Trigger
cSimpleFilter::cSimpleFilter()
{
    //Register Properties
    m_propFilename.SetDescription("Select a single file.");
    RegisterPropertyVariable("Filename", m_propFilename);
 
    m_propFilenameList.SetDescription("Select a list of files.");
    RegisterPropertyVariable("FilenameList", m_propFilenameList);
 
    m_propFilepath.SetDescription("Select a directory.");
    RegisterPropertyVariable("Filepath", m_propFilepath);
    
    // sets a short description for the component
    set_description(*this, "Use this filter to provide properties of type 'Filename', 'FilenameList' and 'Filepath'.");
 
    // set help link to jump to documentation from ADTF Configuration Editor
    set_help_link(*this, "$(ADTF_DIR)/doc/adtf_html/page_demo_qml_property_filter.html");
}
 
//this function will be executed each time a trigger occured on the configured timer
tResult cSimpleFilter::Process(tNanoSeconds tmTimeOfTrigger, IRunner* /*pRunner*/)
{
    std::ostringstream stream;
    stream << "Timestamp: ";
    stream << tmTimeOfTrigger.nCount;
    stream << " | ";
    stream << "Filename: ";
    stream << *m_propFilename;
    stream << " | ";
    stream << "FilenameList: ";
    for (const auto &item : *m_propFilenameList)
    {
        stream << item;
        stream << ", ";
    }
    stream << " | ";
    stream << "Filepath: ";
    stream << *m_propFilepath;
 
    LOG_INFO("%s", stream.str().c_str());
 
    RETURN_NOERROR;
}