Function cvSeqPush

deps/opencv/modules/core/src/datastructs.cpp:1125–1152

Push element onto the sequence: */

/* Push element onto the sequence: */
CV_IMPL schar*
cvSeqPush( CvSeq *seq, const void *element )
{
    schar *ptr = 0;
    size_t elem_size;

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

    elem_size = seq->elem_size;
    ptr = seq->ptr;

    if( ptr >= seq->block_max )
    {
        icvGrowSeq( seq, 0 );

        ptr = seq->ptr;
        assert( ptr + elem_size <= seq->block_max /*&& ptr == seq->block_min */  );
    }

    if( element )
        memcpy( ptr, element, elem_size );
    seq->first->prev->count++;
    seq->total++;
    seq->ptr = ptr + elem_size;

    return ptr;
}


/* Pop last element off of the sequence: */