44 use_merged_upsample (j_decompress_ptr cinfo)  in use_merged_upsample()  argument
48   if (cinfo->do_fancy_upsampling || cinfo->CCIR601_sampling)  in use_merged_upsample()
53   if (cinfo->jpeg_color_space != JCS_YCbCr ||   in use_merged_upsample()
54       cinfo->num_components != 3 ||  in use_merged_upsample()
55       cinfo->out_color_components != 3 ||  in use_merged_upsample()
56       (cinfo->out_color_space != JCS_RGB_565 &&   in use_merged_upsample()
57          cinfo->out_color_space != JCS_RGB)) {  in use_merged_upsample()
62   if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 ||  in use_merged_upsample()
63       cinfo->out_color_space != JCS_RGB ||  in use_merged_upsample()
64       cinfo->out_color_components != RGB_PIXELSIZE)  in use_merged_upsample()
69   if (cinfo->comp_info[0].h_samp_factor != 2 ||  in use_merged_upsample()
70       cinfo->comp_info[1].h_samp_factor != 1 ||  in use_merged_upsample()
71       cinfo->comp_info[2].h_samp_factor != 1 ||  in use_merged_upsample()
72       cinfo->comp_info[0].v_samp_factor >  2 ||  in use_merged_upsample()
73       cinfo->comp_info[1].v_samp_factor != 1 ||  in use_merged_upsample()
74       cinfo->comp_info[2].v_samp_factor != 1)  in use_merged_upsample()
77   if (cinfo->comp_info[0].DCT_scaled_size != cinfo->min_DCT_scaled_size ||  in use_merged_upsample()
78       cinfo->comp_info[1].DCT_scaled_size != cinfo->min_DCT_scaled_size ||  in use_merged_upsample()
79       cinfo->comp_info[2].DCT_scaled_size != cinfo->min_DCT_scaled_size)  in use_merged_upsample()
97 jpeg_calc_output_dimensions (j_decompress_ptr cinfo)  in jpeg_calc_output_dimensions()  argument
108   if (!cinfo->tile_decode)  in jpeg_calc_output_dimensions()
110     if (cinfo->global_state != DSTATE_READY)  in jpeg_calc_output_dimensions()
111       ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  in jpeg_calc_output_dimensions()
116   if (cinfo->scale_num * 8 <= cinfo->scale_denom) {  in jpeg_calc_output_dimensions()
118     cinfo->output_width = (JDIMENSION)  in jpeg_calc_output_dimensions()
119       jdiv_round_up((long) cinfo->image_width, 8L);  in jpeg_calc_output_dimensions()
120     cinfo->output_height = (JDIMENSION)  in jpeg_calc_output_dimensions()
121       jdiv_round_up((long) cinfo->image_height, 8L);  in jpeg_calc_output_dimensions()
122     cinfo->min_DCT_scaled_size = 1;  in jpeg_calc_output_dimensions()
123   } else if (cinfo->scale_num * 4 <= cinfo->scale_denom) {  in jpeg_calc_output_dimensions()
125     cinfo->output_width = (JDIMENSION)  in jpeg_calc_output_dimensions()
126       jdiv_round_up((long) cinfo->image_width, 4L);  in jpeg_calc_output_dimensions()
127     cinfo->output_height = (JDIMENSION)  in jpeg_calc_output_dimensions()
128       jdiv_round_up((long) cinfo->image_height, 4L);  in jpeg_calc_output_dimensions()
129     cinfo->min_DCT_scaled_size = 2;  in jpeg_calc_output_dimensions()
130   } else if (cinfo->scale_num * 2 <= cinfo->scale_denom) {  in jpeg_calc_output_dimensions()
132     cinfo->output_width = (JDIMENSION)  in jpeg_calc_output_dimensions()
133       jdiv_round_up((long) cinfo->image_width, 2L);  in jpeg_calc_output_dimensions()
134     cinfo->output_height = (JDIMENSION)  in jpeg_calc_output_dimensions()
135       jdiv_round_up((long) cinfo->image_height, 2L);  in jpeg_calc_output_dimensions()
136     cinfo->min_DCT_scaled_size = 4;  in jpeg_calc_output_dimensions()
139     cinfo->output_width = cinfo->image_width;  in jpeg_calc_output_dimensions()
140     cinfo->output_height = cinfo->image_height;  in jpeg_calc_output_dimensions()
141     cinfo->min_DCT_scaled_size = DCTSIZE;  in jpeg_calc_output_dimensions()
148   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in jpeg_calc_output_dimensions()
150     int ssize = cinfo->min_DCT_scaled_size;  in jpeg_calc_output_dimensions()
153 	    cinfo->max_h_samp_factor * cinfo->min_DCT_scaled_size) &&  in jpeg_calc_output_dimensions()
155 	    cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size)) {  in jpeg_calc_output_dimensions()
164   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in jpeg_calc_output_dimensions()
168       jdiv_round_up((long) cinfo->image_width *  in jpeg_calc_output_dimensions()
170 		    (long) (cinfo->max_h_samp_factor * DCTSIZE));  in jpeg_calc_output_dimensions()
172       jdiv_round_up((long) cinfo->image_height *  in jpeg_calc_output_dimensions()
174 		    (long) (cinfo->max_v_samp_factor * DCTSIZE));  in jpeg_calc_output_dimensions()
180   cinfo->output_width = cinfo->image_width;  in jpeg_calc_output_dimensions()
181   cinfo->output_height = cinfo->image_height;  in jpeg_calc_output_dimensions()
190   switch (cinfo->out_color_space) {  in jpeg_calc_output_dimensions()
192     cinfo->out_color_components = 1;  in jpeg_calc_output_dimensions()
196     cinfo->out_color_components = RGB_PIXELSIZE;  in jpeg_calc_output_dimensions()
203     cinfo->out_color_components = 3;  in jpeg_calc_output_dimensions()
210     cinfo->out_color_components = 4;  in jpeg_calc_output_dimensions()
213     cinfo->out_color_components = cinfo->num_components;  in jpeg_calc_output_dimensions()
216   cinfo->output_components = (cinfo->quantize_colors ? 1 :  in jpeg_calc_output_dimensions()
217 			      cinfo->out_color_components);  in jpeg_calc_output_dimensions()
220   if (use_merged_upsample(cinfo))  in jpeg_calc_output_dimensions()
221     cinfo->rec_outbuf_height = cinfo->max_v_samp_factor;  in jpeg_calc_output_dimensions()
223     cinfo->rec_outbuf_height = 1;  in jpeg_calc_output_dimensions()
271 prepare_range_limit_table (j_decompress_ptr cinfo)  in prepare_range_limit_table()  argument
278     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,  in prepare_range_limit_table()
281   cinfo->sample_range_limit = table;  in prepare_range_limit_table()
295 	  cinfo->sample_range_limit, CENTERJSAMPLE * SIZEOF(JSAMPLE));  in prepare_range_limit_table()
311 master_selection (j_decompress_ptr cinfo)  in master_selection()  argument
313   my_master_ptr master = (my_master_ptr) cinfo->master;  in master_selection()
319   jpeg_calc_output_dimensions(cinfo);  in master_selection()
320   prepare_range_limit_table(cinfo);  in master_selection()
323   samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components;  in master_selection()
326     ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);  in master_selection()
330   master->using_merged_upsample = use_merged_upsample(cinfo);  in master_selection()
336   if (! cinfo->quantize_colors || ! cinfo->buffered_image) {  in master_selection()
337     cinfo->enable_1pass_quant = FALSE;  in master_selection()
338     cinfo->enable_external_quant = FALSE;  in master_selection()
339     cinfo->enable_2pass_quant = FALSE;  in master_selection()
341   if (cinfo->quantize_colors) {  in master_selection()
342     if (cinfo->raw_data_out)  in master_selection()
343       ERREXIT(cinfo, JERR_NOTIMPL);  in master_selection()
345     if (cinfo->out_color_components != 3) {  in master_selection()
346       cinfo->enable_1pass_quant = TRUE;  in master_selection()
347       cinfo->enable_external_quant = FALSE;  in master_selection()
348       cinfo->enable_2pass_quant = FALSE;  in master_selection()
349       cinfo->colormap = NULL;  in master_selection()
350     } else if (cinfo->colormap != NULL) {  in master_selection()
351       cinfo->enable_external_quant = TRUE;  in master_selection()
352     } else if (cinfo->two_pass_quantize) {  in master_selection()
353       cinfo->enable_2pass_quant = TRUE;  in master_selection()
355       cinfo->enable_1pass_quant = TRUE;  in master_selection()
358     if (cinfo->enable_1pass_quant) {  in master_selection()
360       jinit_1pass_quantizer(cinfo);  in master_selection()
361       master->quantizer_1pass = cinfo->cquantize;  in master_selection()
363       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
368     if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {  in master_selection()
370       jinit_2pass_quantizer(cinfo);  in master_selection()
371       master->quantizer_2pass = cinfo->cquantize;  in master_selection()
373       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
382   if (! cinfo->raw_data_out) {  in master_selection()
385       jinit_merged_upsampler(cinfo); /* does color conversion too */  in master_selection()
387       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
390       jinit_color_deconverter(cinfo);  in master_selection()
391       jinit_upsampler(cinfo);  in master_selection()
393     jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);  in master_selection()
396   jinit_inverse_dct(cinfo);  in master_selection()
398   if (cinfo->arith_code) {  in master_selection()
399     ERREXIT(cinfo, JERR_ARITH_NOTIMPL);  in master_selection()
401     if (cinfo->progressive_mode) {  in master_selection()
403       jinit_phuff_decoder(cinfo);  in master_selection()
405       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
408       jinit_huff_decoder(cinfo);  in master_selection()
412   use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;  in master_selection()
413   jinit_d_coef_controller(cinfo, use_c_buffer);  in master_selection()
415   if (! cinfo->raw_data_out)  in master_selection()
416     jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);  in master_selection()
419   (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);  in master_selection()
422   (*cinfo->inputctl->start_input_pass) (cinfo);  in master_selection()
429   if (cinfo->progress != NULL && ! cinfo->buffered_image &&  in master_selection()
430       cinfo->inputctl->has_multiple_scans) {  in master_selection()
433     if (cinfo->progressive_mode) {  in master_selection()
435       nscans = 2 + 3 * cinfo->num_components;  in master_selection()
438       nscans = cinfo->num_components;  in master_selection()
440     cinfo->progress->pass_counter = 0L;  in master_selection()
441     cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;  in master_selection()
442     cinfo->progress->completed_passes = 0;  in master_selection()
443     cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2);  in master_selection()
461 prepare_for_output_pass (j_decompress_ptr cinfo)  in prepare_for_output_pass()  argument
463   my_master_ptr master = (my_master_ptr) cinfo->master;  in prepare_for_output_pass()
469     (*cinfo->cquantize->start_pass) (cinfo, FALSE);  in prepare_for_output_pass()
470     (*cinfo->post->start_pass) (cinfo, JBUF_CRANK_DEST);  in prepare_for_output_pass()
471     (*cinfo->main->start_pass) (cinfo, JBUF_CRANK_DEST);  in prepare_for_output_pass()
473     ERREXIT(cinfo, JERR_NOT_COMPILED);  in prepare_for_output_pass()
476     if (cinfo->quantize_colors && cinfo->colormap == NULL) {  in prepare_for_output_pass()
478       if (cinfo->two_pass_quantize && cinfo->enable_2pass_quant) {  in prepare_for_output_pass()
479 	cinfo->cquantize = master->quantizer_2pass;  in prepare_for_output_pass()
481       } else if (cinfo->enable_1pass_quant) {  in prepare_for_output_pass()
482 	cinfo->cquantize = master->quantizer_1pass;  in prepare_for_output_pass()
484 	ERREXIT(cinfo, JERR_MODE_CHANGE);  in prepare_for_output_pass()
487     (*cinfo->idct->start_pass) (cinfo);  in prepare_for_output_pass()
488     (*cinfo->coef->start_output_pass) (cinfo);  in prepare_for_output_pass()
489     if (! cinfo->raw_data_out) {  in prepare_for_output_pass()
491 	(*cinfo->cconvert->start_pass) (cinfo);  in prepare_for_output_pass()
492       (*cinfo->upsample->start_pass) (cinfo);  in prepare_for_output_pass()
493       if (cinfo->quantize_colors)  in prepare_for_output_pass()
494 	(*cinfo->cquantize->start_pass) (cinfo, master->pub.is_dummy_pass);  in prepare_for_output_pass()
495       (*cinfo->post->start_pass) (cinfo,  in prepare_for_output_pass()
497       (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);  in prepare_for_output_pass()
502   if (cinfo->progress != NULL) {  in prepare_for_output_pass()
503     cinfo->progress->completed_passes = master->pass_number;  in prepare_for_output_pass()
504     cinfo->progress->total_passes = master->pass_number +  in prepare_for_output_pass()
509     if (cinfo->buffered_image && ! cinfo->inputctl->eoi_reached) {  in prepare_for_output_pass()
510       cinfo->progress->total_passes += (cinfo->enable_2pass_quant ? 2 : 1);  in prepare_for_output_pass()
521 finish_output_pass (j_decompress_ptr cinfo)  in finish_output_pass()  argument
523   my_master_ptr master = (my_master_ptr) cinfo->master;  in finish_output_pass()
525   if (cinfo->quantize_colors)  in finish_output_pass()
526     (*cinfo->cquantize->finish_pass) (cinfo);  in finish_output_pass()
538 jpeg_new_colormap (j_decompress_ptr cinfo)  in jpeg_new_colormap()  argument
540   my_master_ptr master = (my_master_ptr) cinfo->master;  in jpeg_new_colormap()
543   if (cinfo->global_state != DSTATE_BUFIMAGE)  in jpeg_new_colormap()
544     ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  in jpeg_new_colormap()
546   if (cinfo->quantize_colors && cinfo->enable_external_quant &&  in jpeg_new_colormap()
547       cinfo->colormap != NULL) {  in jpeg_new_colormap()
549     cinfo->cquantize = master->quantizer_2pass;  in jpeg_new_colormap()
551     (*cinfo->cquantize->new_color_map) (cinfo);  in jpeg_new_colormap()
554     ERREXIT(cinfo, JERR_MODE_CHANGE);  in jpeg_new_colormap()
566 jinit_master_decompress (j_decompress_ptr cinfo)  in jinit_master_decompress()  argument
571       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,  in jinit_master_decompress()
573   cinfo->master = (struct jpeg_decomp_master *) master;  in jinit_master_decompress()
579   master_selection(cinfo);  in jinit_master_decompress()