Function cvGetImage

deps/opencv/modules/core/src/array.cpp:2776–2810

convert array (CvMat or IplImage) to IplImage

// convert array (CvMat or IplImage) to IplImage
CV_IMPL IplImage*
cvGetImage( const CvArr* array, IplImage* img )
{
    IplImage* result = 0;
    const IplImage* src = (const IplImage*)array;
    int depth;

    if( !img )
        CV_Error( CV_StsNullPtr, "" );

    if( !CV_IS_IMAGE_HDR(src) )
    {
        const CvMat* mat = (const CvMat*)src;

        if( !CV_IS_MAT_HDR(mat))
            CV_Error( CV_StsBadFlag, "" );

        if( mat->data.ptr == 0 )
            CV_Error( CV_StsNullPtr, "" );

        depth = cvIplDepth(mat->type);

        cvInitImageHeader( img, cvSize(mat->cols, mat->rows),
                           depth, CV_MAT_CN(mat->type) );
        cvSetData( img, mat->data.ptr, mat->step );

        result = img;
    }
    else
    {
        result = (IplImage*)src;
    }

    return result;
}


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