native/libjavajpeg/jcparam.c

494 fill_scans (jpeg_scan_info * scanptr, int ncomps,
500   for (ci = 0; ci < ncomps; ci++) {
513 fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al)
518   if (ncomps <= MAX_COMPS_IN_SCAN) {
520     scanptr->comps_in_scan = ncomps;
521     for (ci = 0; ci < ncomps; ci++)
529     scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al);
543   int ncomps = cinfo->num_components;
552   if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
557     if (ncomps > MAX_COMPS_IN_SCAN)
558       nscans = 6 * ncomps;      /* 2 DC + 4 AC scans per component */
560       nscans = 2 + 4 * ncomps;  /* 2 DC scans; 4 AC scans per component */
580   if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
583     scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
594     scanptr = fill_dc_scans(scanptr, ncomps, 1, 0);
603     scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
604     scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2);
605     scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2);
607     scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1);
609     scanptr = fill_dc_scans(scanptr, ncomps, 1, 0);
610     scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0);