gistfile1.txt

    gscbuf = v4l2_getfree_v4l2buf(gsc->output);
    if (!gscbuf)
        return AVERROR(ENOMEM);
    // copy mfc capture buffer to gsc capture buffer
    for(i = 0; i < avbuf->num_planes; i++) {
        gscbuf->plane_info[i].mm_addr = avbuf->plane_info[i].mm_addr;
        gscbuf->planes[i].bytesused = avbuf->planes[i].bytesused;
        gscbuf->planes[i].length = avbuf->planes[i].length;
    }