31 METHODDEF(int) consume_markers JPP((j_decompress_ptr cinfo));
32 METHODDEF(int) consume_markers_with_huffman_index JPP((j_decompress_ptr cinfo,
41 initial_setup (j_decompress_ptr cinfo)  in initial_setup()  argument
48   if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||  in initial_setup()
49       (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)  in initial_setup()
50     ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);  in initial_setup()
53   if (cinfo->data_precision != BITS_IN_JSAMPLE)  in initial_setup()
54     ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);  in initial_setup()
57   if (cinfo->num_components > MAX_COMPONENTS)  in initial_setup()
58     ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,  in initial_setup()
62   cinfo->max_h_samp_factor = 1;  in initial_setup()
63   cinfo->max_v_samp_factor = 1;  in initial_setup()
64   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in initial_setup()
68       ERREXIT(cinfo, JERR_BAD_SAMPLING);  in initial_setup()
69     cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,  in initial_setup()
71     cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,  in initial_setup()
79   cinfo->min_DCT_scaled_size = DCTSIZE;  in initial_setup()
82   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in initial_setup()
87       jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,  in initial_setup()
88 		    (long) (cinfo->max_h_samp_factor * DCTSIZE));  in initial_setup()
90       jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,  in initial_setup()
91 		    (long) (cinfo->max_v_samp_factor * DCTSIZE));  in initial_setup()
98       jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,  in initial_setup()
99 		    (long) cinfo->max_h_samp_factor);  in initial_setup()
101       jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,  in initial_setup()
102 		    (long) cinfo->max_v_samp_factor);  in initial_setup()
110   cinfo->total_iMCU_rows = (JDIMENSION)  in initial_setup()
111     jdiv_round_up((long) cinfo->image_height,  in initial_setup()
112 		  (long) (cinfo->max_v_samp_factor*DCTSIZE));  in initial_setup()
115   if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode)  in initial_setup()
116     cinfo->inputctl->has_multiple_scans = TRUE;  in initial_setup()
118     cinfo->inputctl->has_multiple_scans = FALSE;  in initial_setup()
119   cinfo->original_image_width = cinfo->image_width;  in initial_setup()
123 per_scan_setup (j_decompress_ptr cinfo)  in per_scan_setup()  argument
130   if (cinfo->comps_in_scan == 1) {  in per_scan_setup()
133     compptr = cinfo->cur_comp_info[0];  in per_scan_setup()
136     cinfo->MCUs_per_row = compptr->width_in_blocks;  in per_scan_setup()
137     cinfo->MCU_rows_in_scan = compptr->height_in_blocks;  in per_scan_setup()
153     cinfo->blocks_in_MCU = 1;  in per_scan_setup()
154     cinfo->MCU_membership[0] = 0;  in per_scan_setup()
159     if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)  in per_scan_setup()
160       ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,  in per_scan_setup()
164     cinfo->MCUs_per_row = (JDIMENSION)  in per_scan_setup()
165       jdiv_round_up((long) cinfo->image_width,  in per_scan_setup()
166 		    (long) (cinfo->max_h_samp_factor*DCTSIZE));  in per_scan_setup()
167     cinfo->MCU_rows_in_scan = (JDIMENSION)  in per_scan_setup()
168       jdiv_round_up((long) cinfo->image_height,  in per_scan_setup()
169 		    (long) (cinfo->max_v_samp_factor*DCTSIZE));  in per_scan_setup()
171     cinfo->blocks_in_MCU = 0;  in per_scan_setup()
173     for (ci = 0; ci < cinfo->comps_in_scan; ci++) {  in per_scan_setup()
174       compptr = cinfo->cur_comp_info[ci];  in per_scan_setup()
185       if (cinfo->tile_decode) {  in per_scan_setup()
186         tmp = (int) (jdiv_round_up(cinfo->image_width, 8)  in per_scan_setup()
198       if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU)  in per_scan_setup()
199 	ERREXIT(cinfo, JERR_BAD_MCU_SIZE);  in per_scan_setup()
201 	cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;  in per_scan_setup()
209 jpeg_decompress_per_scan_setup(j_decompress_ptr cinfo)  in jpeg_decompress_per_scan_setup()  argument
211     per_scan_setup(cinfo);  in jpeg_decompress_per_scan_setup()
238 latch_quant_tables (j_decompress_ptr cinfo)  in latch_quant_tables()  argument
244   for (ci = 0; ci < cinfo->comps_in_scan; ci++) {  in latch_quant_tables()
245     compptr = cinfo->cur_comp_info[ci];  in latch_quant_tables()
252 	cinfo->quant_tbl_ptrs[qtblno] == NULL)  in latch_quant_tables()
253       ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);  in latch_quant_tables()
256       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,  in latch_quant_tables()
258     MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL));  in latch_quant_tables()
272 start_input_pass (j_decompress_ptr cinfo)  in start_input_pass()  argument
274   per_scan_setup(cinfo);  in start_input_pass()
275   latch_quant_tables(cinfo);  in start_input_pass()
276   (*cinfo->entropy->start_pass) (cinfo);  in start_input_pass()
277   (*cinfo->coef->start_input_pass) (cinfo);  in start_input_pass()
278   cinfo->inputctl->consume_input = cinfo->coef->consume_data;  in start_input_pass()
279   cinfo->inputctl->consume_input_build_huffman_index =  in start_input_pass()
280         cinfo->coef->consume_data_build_huffman_index;  in start_input_pass()
291 finish_input_pass (j_decompress_ptr cinfo)  in finish_input_pass()  argument
293   cinfo->inputctl->consume_input = consume_markers;  in finish_input_pass()
294   cinfo->inputctl->consume_input_build_huffman_index =  in finish_input_pass()
300 consume_markers_with_huffman_index (j_decompress_ptr cinfo,  in consume_markers_with_huffman_index()  argument
303     return consume_markers(cinfo);  in consume_markers_with_huffman_index()
316 consume_markers (j_decompress_ptr cinfo)  in consume_markers()  argument
318   my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;  in consume_markers()
324   val = (*cinfo->marker->read_markers) (cinfo);  in consume_markers()
329       initial_setup(cinfo);  in consume_markers()
337 	ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */  in consume_markers()
338       start_input_pass(cinfo);  in consume_markers()
344       if (cinfo->marker->saw_SOF)  in consume_markers()
345 	ERREXIT(cinfo, JERR_SOF_NO_SOS);  in consume_markers()
350       if (cinfo->output_scan_number > cinfo->input_scan_number)  in consume_markers()
351 	cinfo->output_scan_number = cinfo->input_scan_number;  in consume_markers()
367 reset_input_controller (j_decompress_ptr cinfo)  in reset_input_controller()  argument
369   my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;  in reset_input_controller()
378   (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);  in reset_input_controller()
379   (*cinfo->marker->reset_marker_reader) (cinfo);  in reset_input_controller()
381   cinfo->coef_bits = NULL;  in reset_input_controller()
391 jinit_input_controller (j_decompress_ptr cinfo)  in jinit_input_controller()  argument
397     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,  in jinit_input_controller()
399   cinfo->inputctl = (struct jpeg_input_controller *) inputctl;  in jinit_input_controller()