156   jpeg_component_info *compptr;  in decompress_onepass()  local
180 	compptr = cinfo->cur_comp_info[ci];  in decompress_onepass()
182 	if (! compptr->component_needed) {  in decompress_onepass()
183 	  blkn += compptr->MCU_blocks;  in decompress_onepass()
186 	inverse_DCT = cinfo->idct->inverse_DCT[compptr->component_index];  in decompress_onepass()
187 	useful_width = (MCU_col_num < last_MCU_col) ? compptr->MCU_width  in decompress_onepass()
188 						    : compptr->last_col_width;  in decompress_onepass()
189 	output_ptr = output_buf[compptr->component_index] +  in decompress_onepass()
190 	  yoffset * compptr->DCT_scaled_size;  in decompress_onepass()
191 	start_col = MCU_col_num * compptr->MCU_sample_width;  in decompress_onepass()
192 	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {  in decompress_onepass()
194 	      yoffset+yindex < compptr->last_row_height) {  in decompress_onepass()
197 	      (*inverse_DCT) (cinfo, compptr,  in decompress_onepass()
200 	      output_col += compptr->DCT_scaled_size;  in decompress_onepass()
203 	  blkn += compptr->MCU_width;  in decompress_onepass()
204 	  output_ptr += compptr->DCT_scaled_size;  in decompress_onepass()
252   jpeg_component_info *compptr;  in consume_data()  local
256     compptr = cinfo->cur_comp_info[ci];  in consume_data()
258       ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],  in consume_data()
259        cinfo->input_iMCU_row * compptr->v_samp_factor,  in consume_data()
260        (JDIMENSION) compptr->v_samp_factor, TRUE);  in consume_data()
275 	compptr = cinfo->cur_comp_info[ci];  in consume_data()
276 	start_col = MCU_col_num * compptr->MCU_width;  in consume_data()
277 	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {  in consume_data()
279 	  for (xindex = 0; xindex < compptr->MCU_width; xindex++) {  in consume_data()
325   jpeg_component_info *compptr;  in decompress_data()  local
337   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in decompress_data()
338        ci++, compptr++) {  in decompress_data()
340     if (! compptr->component_needed)  in decompress_data()
345        cinfo->output_iMCU_row * compptr->v_samp_factor,  in decompress_data()
346        (JDIMENSION) compptr->v_samp_factor, FALSE);  in decompress_data()
349       block_rows = compptr->v_samp_factor;  in decompress_data()
352       block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);  in decompress_data()
353       if (block_rows == 0) block_rows = compptr->v_samp_factor;  in decompress_data()
361       for (block_num = 0; block_num < compptr->width_in_blocks; block_num++) {  in decompress_data()
362 	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) buffer_ptr,  in decompress_data()
365 	output_col += compptr->DCT_scaled_size;  in decompress_data()
367       output_ptr += compptr->DCT_scaled_size;  in decompress_data()
410   jpeg_component_info *compptr;  in smoothing_ok()  local
426   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in smoothing_ok()
427        ci++, compptr++) {  in smoothing_ok()
429     if ((qtable = compptr->quant_table) == NULL)  in smoothing_ok()
471   jpeg_component_info *compptr;  in decompress_smooth_data()  local
499   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in decompress_smooth_data()
500        ci++, compptr++) {  in decompress_smooth_data()
502     if (! compptr->component_needed)  in decompress_smooth_data()
506       block_rows = compptr->v_samp_factor;  in decompress_smooth_data()
511       block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);  in decompress_smooth_data()
512       if (block_rows == 0) block_rows = compptr->v_samp_factor;  in decompress_smooth_data()
518       access_rows += compptr->v_samp_factor; /* prior iMCU row too */  in decompress_smooth_data()
521 	 (cinfo->output_iMCU_row - 1) * compptr->v_samp_factor,  in decompress_smooth_data()
523       buffer += compptr->v_samp_factor;	/* point to current iMCU row */  in decompress_smooth_data()
533     quanttbl = compptr->quant_table;  in decompress_smooth_data()
560       last_block_column = compptr->width_in_blocks - 1;  in decompress_smooth_data()
650 	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) workspace,  in decompress_smooth_data()
657 	output_col += compptr->DCT_scaled_size;  in decompress_smooth_data()
659       output_ptr += compptr->DCT_scaled_size;  in decompress_smooth_data()
697     jpeg_component_info *compptr;  in jinit_d_coef_controller()  local
699     for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in jinit_d_coef_controller()
700 	 ci++, compptr++) {  in jinit_d_coef_controller()
701       access_rows = compptr->v_samp_factor;  in jinit_d_coef_controller()
709 	 (JDIMENSION) jround_up((long) compptr->width_in_blocks,  in jinit_d_coef_controller()
710 				(long) compptr->h_samp_factor),  in jinit_d_coef_controller()
711 	 (JDIMENSION) jround_up((long) compptr->height_in_blocks,  in jinit_d_coef_controller()
712 				(long) compptr->v_samp_factor),  in jinit_d_coef_controller()