224   jpeg_component_info *compptr;  in initial_setup()  local
280   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in initial_setup()
281        ci++, compptr++) {  in initial_setup()
282     if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||  in initial_setup()
283         compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)  in initial_setup()
286                                    compptr->h_samp_factor);  in initial_setup()
288                                    compptr->v_samp_factor);  in initial_setup()
292   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in initial_setup()
293        ci++, compptr++) {  in initial_setup()
295     compptr->component_index = ci;  in initial_setup()
305            (cinfo->max_h_samp_factor % (compptr->h_samp_factor * ssize * 2)) == 0) {  in initial_setup()
309     compptr->DCT_h_scaled_size = cinfo->min_DCT_h_scaled_size * ssize;  in initial_setup()
314            (cinfo->max_v_samp_factor % (compptr->v_samp_factor * ssize * 2)) == 0) {  in initial_setup()
318     compptr->DCT_v_scaled_size = cinfo->min_DCT_v_scaled_size * ssize;  in initial_setup()
321     if (compptr->DCT_h_scaled_size > compptr->DCT_v_scaled_size * 2)  in initial_setup()
322         compptr->DCT_h_scaled_size = compptr->DCT_v_scaled_size * 2;  in initial_setup()
323     else if (compptr->DCT_v_scaled_size > compptr->DCT_h_scaled_size * 2)  in initial_setup()
324         compptr->DCT_v_scaled_size = compptr->DCT_h_scaled_size * 2;  in initial_setup()
327     compptr->width_in_blocks = (JDIMENSION)  in initial_setup()
328       jdiv_round_up((long) cinfo->jpeg_width * (long) compptr->h_samp_factor,  in initial_setup()
330     compptr->height_in_blocks = (JDIMENSION)  in initial_setup()
331       jdiv_round_up((long) cinfo->jpeg_height * (long) compptr->v_samp_factor,  in initial_setup()
334     compptr->downsampled_width = (JDIMENSION)  in initial_setup()
336                     (long) (compptr->h_samp_factor * compptr->DCT_h_scaled_size),  in initial_setup()
338     compptr->downsampled_height = (JDIMENSION)  in initial_setup()
340                     (long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size),  in initial_setup()
343     compptr->component_needed = TRUE;  in initial_setup()
577   jpeg_component_info *compptr;  in per_scan_setup()  local
582     compptr = cinfo->cur_comp_info[0];  in per_scan_setup()
585     cinfo->MCUs_per_row = compptr->width_in_blocks;  in per_scan_setup()
586     cinfo->MCU_rows_in_scan = compptr->height_in_blocks;  in per_scan_setup()
589     compptr->MCU_width = 1;  in per_scan_setup()
590     compptr->MCU_height = 1;  in per_scan_setup()
591     compptr->MCU_blocks = 1;  in per_scan_setup()
592     compptr->MCU_sample_width = compptr->DCT_h_scaled_size;  in per_scan_setup()
593     compptr->last_col_width = 1;  in per_scan_setup()
597     tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);  in per_scan_setup()
598     if (tmp == 0) tmp = compptr->v_samp_factor;  in per_scan_setup()
599     compptr->last_row_height = tmp;  in per_scan_setup()
623       compptr = cinfo->cur_comp_info[ci];  in per_scan_setup()
625       compptr->MCU_width = compptr->h_samp_factor;  in per_scan_setup()
626       compptr->MCU_height = compptr->v_samp_factor;  in per_scan_setup()
627       compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;  in per_scan_setup()
628       compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_h_scaled_size;  in per_scan_setup()
630       tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);  in per_scan_setup()
631       if (tmp == 0) tmp = compptr->MCU_width;  in per_scan_setup()
632       compptr->last_col_width = tmp;  in per_scan_setup()
633       tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);  in per_scan_setup()
634       if (tmp == 0) tmp = compptr->MCU_height;  in per_scan_setup()
635       compptr->last_row_height = tmp;  in per_scan_setup()
637       mcublks = compptr->MCU_blocks;  in per_scan_setup()