opencv/modules/legacy/src/blobtrackanalysis.cpp

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#include "precomp.hpp"

/*======================= FILTER LIST SHELL =====================*/
typedef struct DefTrackAnalyser
{
    CvBlob                  blob;
    CvBlobTrackAnalysisOne* pFilter;
    int                     m_LastFrame;
    int                     state;
} DefTrackAnalyser;

class CvBlobTrackAnalysisList : public CvBlobTrackAnalysis
{
protected:
    CvBlobTrackAnalysisOne* (*m_CreateAnalysis)();
    CvBlobSeq               m_TrackAnalyserList;
    int                     m_Frame;
public:
    CvBlobTrackAnalysisList(CvBlobTrackAnalysisOne* (*create)()):m_TrackAnalyserList(sizeof(DefTrackAnalyser))
    {
        m_Frame = 0;
        m_CreateAnalysis = create;
        SetModuleName("List");
    }
    ~CvBlobTrackAnalysisList()
    {
        int i;
        for(i=m_TrackAnalyserList.GetBlobNum(); i>0; --i)
        {
            DefTrackAnalyser* pF = (DefTrackAnalyser*)m_TrackAnalyserList.GetBlob(i-1);
            pF->pFilter->Release();
        }
    };
    virtual void    AddBlob(CvBlob* pBlob)
    {
        DefTrackAnalyser* pF = (DefTrackAnalyser*)m_TrackAnalyserList.GetBlobByID(CV_BLOB_ID(pBlob));
        if(pF == NULL)
        {   /* Create new filter: */
            DefTrackAnalyser F;
            F.state = 0;
            F.blob = pBlob[0];
            F.m_LastFrame = m_Frame;
            F.pFilter = m_CreateAnalysis();
            m_TrackAnalyserList.AddBlob((CvBlob*)&F);
            pF = (DefTrackAnalyser*)m_TrackAnalyserList.GetBlobByID(CV_BLOB_ID(pBlob));
        }

        assert(pF);
        pF->blob = pBlob[0];
        pF->m_LastFrame = m_Frame;
    };
    virtual void    Process(IplImage* pImg, IplImage* pFG)
    {
        int i;
        for(i=m_TrackAnalyserList.GetBlobNum(); i>0; --i)
        {
            DefTrackAnalyser* pF = (DefTrackAnalyser*)m_TrackAnalyserList.GetBlob(i-1);
            if(pF->m_LastFrame == m_Frame)
            {   /* Process: */
                int ID = CV_BLOB_ID(pF);
                pF->state = pF->pFilter->Process(&(pF->blob), pImg, pFG);
                CV_BLOB_ID(pF) = ID;
            }
            else
            {   /* Delete blob filter: */
                pF->pFilter->Release();
                m_TrackAnalyserList.DelBlob(i-1);
            }
        } /* Next blob. */
        m_Frame++;
    };
    float GetState(int BlobID)
    {
        DefTrackAnalyser* pF = (DefTrackAnalyser*)m_TrackAnalyserList.GetBlobByID(BlobID);
        return pF?pF->state:0.f;
    };
    void    Release(){delete this;};

}; /* CvBlobTrackAnalysisList */

CvBlobTrackAnalysis* cvCreateBlobTrackAnalysisList(CvBlobTrackAnalysisOne* (*create)())
{
    return (CvBlobTrackAnalysis*) new CvBlobTrackAnalysisList(create);
}

/* ======================== Analyser modules ============================= */