8  * This file contains the main buffer controller for compression.
9  * The main buffer lies between the pre-processor and the JPEG
71   my_main_ptr main = (my_main_ptr) cinfo->main;  in start_pass_main()  local
77   main->cur_iMCU_row = 0;	/* initialize counters */  in start_pass_main()
78   main->rowgroup_ctr = 0;  in start_pass_main()
79   main->suspended = FALSE;  in start_pass_main()
80   main->pass_mode = pass_mode;	/* save mode for use by process_data */  in start_pass_main()
85     if (main->whole_image[0] != NULL)  in start_pass_main()
88     main->pub.process_data = process_data_simple_main;  in start_pass_main()
94     if (main->whole_image[0] == NULL)  in start_pass_main()
96     main->pub.process_data = process_data_buffer_main;  in start_pass_main()
117   my_main_ptr main = (my_main_ptr) cinfo->main;  in process_data_simple_main()  local
119   while (main->cur_iMCU_row < cinfo->total_iMCU_rows) {  in process_data_simple_main()
120     /* Read input data if we haven't filled the main buffer yet */  in process_data_simple_main()
121     if (main->rowgroup_ctr < DCTSIZE)  in process_data_simple_main()
124 					main->buffer, &main->rowgroup_ctr,  in process_data_simple_main()
131     if (main->rowgroup_ctr != DCTSIZE)  in process_data_simple_main()
135     if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) {  in process_data_simple_main()
142       if (! main->suspended) {  in process_data_simple_main()
144 	main->suspended = TRUE;  in process_data_simple_main()
149      * call suspended; then mark the main buffer empty.  in process_data_simple_main()
151     if (main->suspended) {  in process_data_simple_main()
153       main->suspended = FALSE;  in process_data_simple_main()
155     main->rowgroup_ctr = 0;  in process_data_simple_main()
156     main->cur_iMCU_row++;  in process_data_simple_main()
173   my_main_ptr main = (my_main_ptr) cinfo->main;  in process_data_buffer_main()  local
176   boolean writing = (main->pass_mode != JBUF_CRANK_DEST);  in process_data_buffer_main()
178   while (main->cur_iMCU_row < cinfo->total_iMCU_rows) {  in process_data_buffer_main()
180     if (main->rowgroup_ctr == 0) {  in process_data_buffer_main()
183 	main->buffer[ci] = (*cinfo->mem->access_virt_sarray)  in process_data_buffer_main()
184 	  ((j_common_ptr) cinfo, main->whole_image[ci],  in process_data_buffer_main()
185 	   main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE),  in process_data_buffer_main()
191 	main->rowgroup_ctr = DCTSIZE;  in process_data_buffer_main()
200 					main->buffer, &main->rowgroup_ctr,  in process_data_buffer_main()
203       if (main->rowgroup_ctr < DCTSIZE)  in process_data_buffer_main()
208     if (main->pass_mode != JBUF_SAVE_SOURCE) {  in process_data_buffer_main()
209       if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) {  in process_data_buffer_main()
216 	if (! main->suspended) {  in process_data_buffer_main()
218 	  main->suspended = TRUE;  in process_data_buffer_main()
223        * call suspended; then mark the main buffer empty.  in process_data_buffer_main()
225       if (main->suspended) {  in process_data_buffer_main()
227 	main->suspended = FALSE;  in process_data_buffer_main()
232     main->rowgroup_ctr = 0;  in process_data_buffer_main()
233     main->cur_iMCU_row++;  in process_data_buffer_main()
241  * Initialize main buffer controller.
247   my_main_ptr main;  in jinit_c_main_controller()  local
251   main = (my_main_ptr)  in jinit_c_main_controller()
254   cinfo->main = (struct jpeg_c_main_controller *) main;  in jinit_c_main_controller()
255   main->pub.start_pass = start_pass_main;  in jinit_c_main_controller()
270       main->whole_image[ci] = (*cinfo->mem->request_virt_sarray)  in jinit_c_main_controller()
282     main->whole_image[0] = NULL; /* flag for no virtual arrays */  in jinit_c_main_controller()
287       main->buffer[ci] = (*cinfo->mem->alloc_sarray)  in jinit_c_main_controller()