80   my_prep_ptr prep = (my_prep_ptr) cinfo->prep;  in start_pass_prep()  local
86   prep->rows_to_go = cinfo->image_height;  in start_pass_prep()
88   prep->next_buf_row = 0;  in start_pass_prep()
93   prep->this_row_group = 0;  in start_pass_prep()
95   prep->next_buf_stop = 2 * cinfo->max_v_samp_factor;  in start_pass_prep()
134   my_prep_ptr prep = (my_prep_ptr) cinfo->prep;  in pre_process_data()  local
143     numrows = cinfo->max_v_samp_factor - prep->next_buf_row;  in pre_process_data()
146 				       prep->color_buf,  in pre_process_data()
147 				       (JDIMENSION) prep->next_buf_row,  in pre_process_data()
150     prep->next_buf_row += numrows;  in pre_process_data()
151     prep->rows_to_go -= numrows;  in pre_process_data()
153     if (prep->rows_to_go == 0 &&  in pre_process_data()
154 	prep->next_buf_row < cinfo->max_v_samp_factor) {  in pre_process_data()
156 	expand_bottom_edge(prep->color_buf[ci], cinfo->image_width,  in pre_process_data()
157 			   prep->next_buf_row, cinfo->max_v_samp_factor);  in pre_process_data()
159       prep->next_buf_row = cinfo->max_v_samp_factor;  in pre_process_data()
162     if (prep->next_buf_row == cinfo->max_v_samp_factor) {  in pre_process_data()
164 					prep->color_buf, (JDIMENSION) 0,  in pre_process_data()
166       prep->next_buf_row = 0;  in pre_process_data()
172     if (prep->rows_to_go == 0 &&  in pre_process_data()
201   my_prep_ptr prep = (my_prep_ptr) cinfo->prep;  in pre_process_context()  local
210       numrows = prep->next_buf_stop - prep->next_buf_row;  in pre_process_context()
213 					 prep->color_buf,  in pre_process_context()
214 					 (JDIMENSION) prep->next_buf_row,  in pre_process_context()
217       if (prep->rows_to_go == cinfo->image_height) {  in pre_process_context()
221 	    jcopy_sample_rows(prep->color_buf[ci], 0,  in pre_process_context()
222 			      prep->color_buf[ci], -row,  in pre_process_context()
228       prep->next_buf_row += numrows;  in pre_process_context()
229       prep->rows_to_go -= numrows;  in pre_process_context()
232       if (prep->rows_to_go != 0)  in pre_process_context()
235       if (prep->next_buf_row < prep->next_buf_stop) {  in pre_process_context()
237 	  expand_bottom_edge(prep->color_buf[ci], cinfo->image_width,  in pre_process_context()
238 			     prep->next_buf_row, prep->next_buf_stop);  in pre_process_context()
240 	prep->next_buf_row = prep->next_buf_stop;  in pre_process_context()
244     if (prep->next_buf_row == prep->next_buf_stop) {  in pre_process_context()
246 					prep->color_buf,  in pre_process_context()
247 					(JDIMENSION) prep->this_row_group,  in pre_process_context()
251       prep->this_row_group += cinfo->max_v_samp_factor;  in pre_process_context()
252       if (prep->this_row_group >= buf_height)  in pre_process_context()
253 	prep->this_row_group = 0;  in pre_process_context()
254       if (prep->next_buf_row >= buf_height)  in pre_process_context()
255 	prep->next_buf_row = 0;  in pre_process_context()
256       prep->next_buf_stop = prep->next_buf_row + cinfo->max_v_samp_factor;  in pre_process_context()
269   my_prep_ptr prep = (my_prep_ptr) cinfo->prep;  in create_context_buffer()  local
302     prep->color_buf[ci] = fake_buffer + rgroup_height;  in create_context_buffer()
317   my_prep_ptr prep;  in jinit_c_prep_controller()  local
324   prep = (my_prep_ptr)  in jinit_c_prep_controller()
327   cinfo->prep = (struct jpeg_c_prep_controller *) prep;  in jinit_c_prep_controller()
328   prep->pub.start_pass = start_pass_prep;  in jinit_c_prep_controller()
337     prep->pub.pre_process_data = pre_process_context;  in jinit_c_prep_controller()
344     prep->pub.pre_process_data = pre_process_data;  in jinit_c_prep_controller()
347       prep->color_buf[ci] = (*cinfo->mem->alloc_sarray)  in jinit_c_prep_controller()