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()
51   if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 ||  in use_merged_upsample()
52       cinfo->out_color_space != JCS_RGB ||  in use_merged_upsample()
53       cinfo->out_color_components != RGB_PIXELSIZE)  in use_merged_upsample()
56   if (cinfo->comp_info[0].h_samp_factor != 2 ||  in use_merged_upsample()
57       cinfo->comp_info[1].h_samp_factor != 1 ||  in use_merged_upsample()
58       cinfo->comp_info[2].h_samp_factor != 1 ||  in use_merged_upsample()
59       cinfo->comp_info[0].v_samp_factor >  2 ||  in use_merged_upsample()
60       cinfo->comp_info[1].v_samp_factor != 1 ||  in use_merged_upsample()
61       cinfo->comp_info[2].v_samp_factor != 1)  in use_merged_upsample()
64   if (cinfo->comp_info[0].DCT_scaled_size != cinfo->min_DCT_scaled_size ||  in use_merged_upsample()
65       cinfo->comp_info[1].DCT_scaled_size != cinfo->min_DCT_scaled_size ||  in use_merged_upsample()
66       cinfo->comp_info[2].DCT_scaled_size != cinfo->min_DCT_scaled_size)  in use_merged_upsample()
84 jpeg_calc_output_dimensions (j_decompress_ptr cinfo)  in jpeg_calc_output_dimensions()  argument
93   if (cinfo->global_state != DSTATE_READY)  in jpeg_calc_output_dimensions()
94     ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  in jpeg_calc_output_dimensions()
99   if (cinfo->scale_num * 8 <= cinfo->scale_denom) {  in jpeg_calc_output_dimensions()
101     cinfo->output_width = (JDIMENSION)  in jpeg_calc_output_dimensions()
102       jdiv_round_up((long) cinfo->image_width, 8L);  in jpeg_calc_output_dimensions()
103     cinfo->output_height = (JDIMENSION)  in jpeg_calc_output_dimensions()
104       jdiv_round_up((long) cinfo->image_height, 8L);  in jpeg_calc_output_dimensions()
105     cinfo->min_DCT_scaled_size = 1;  in jpeg_calc_output_dimensions()
106   } else if (cinfo->scale_num * 4 <= cinfo->scale_denom) {  in jpeg_calc_output_dimensions()
108     cinfo->output_width = (JDIMENSION)  in jpeg_calc_output_dimensions()
109       jdiv_round_up((long) cinfo->image_width, 4L);  in jpeg_calc_output_dimensions()
110     cinfo->output_height = (JDIMENSION)  in jpeg_calc_output_dimensions()
111       jdiv_round_up((long) cinfo->image_height, 4L);  in jpeg_calc_output_dimensions()
112     cinfo->min_DCT_scaled_size = 2;  in jpeg_calc_output_dimensions()
113   } else if (cinfo->scale_num * 2 <= cinfo->scale_denom) {  in jpeg_calc_output_dimensions()
115     cinfo->output_width = (JDIMENSION)  in jpeg_calc_output_dimensions()
116       jdiv_round_up((long) cinfo->image_width, 2L);  in jpeg_calc_output_dimensions()
117     cinfo->output_height = (JDIMENSION)  in jpeg_calc_output_dimensions()
118       jdiv_round_up((long) cinfo->image_height, 2L);  in jpeg_calc_output_dimensions()
119     cinfo->min_DCT_scaled_size = 4;  in jpeg_calc_output_dimensions()
122     cinfo->output_width = cinfo->image_width;  in jpeg_calc_output_dimensions()
123     cinfo->output_height = cinfo->image_height;  in jpeg_calc_output_dimensions()
124     cinfo->min_DCT_scaled_size = DCTSIZE;  in jpeg_calc_output_dimensions()
131   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in jpeg_calc_output_dimensions()
133     int ssize = cinfo->min_DCT_scaled_size;  in jpeg_calc_output_dimensions()
136 	    cinfo->max_h_samp_factor * cinfo->min_DCT_scaled_size) &&  in jpeg_calc_output_dimensions()
138 	    cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size)) {  in jpeg_calc_output_dimensions()
147   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;  in jpeg_calc_output_dimensions()
151       jdiv_round_up((long) cinfo->image_width *  in jpeg_calc_output_dimensions()
153 		    (long) (cinfo->max_h_samp_factor * DCTSIZE));  in jpeg_calc_output_dimensions()
155       jdiv_round_up((long) cinfo->image_height *  in jpeg_calc_output_dimensions()
157 		    (long) (cinfo->max_v_samp_factor * DCTSIZE));  in jpeg_calc_output_dimensions()
163   cinfo->output_width = cinfo->image_width;  in jpeg_calc_output_dimensions()
164   cinfo->output_height = cinfo->image_height;  in jpeg_calc_output_dimensions()
173   switch (cinfo->out_color_space) {  in jpeg_calc_output_dimensions()
175     cinfo->out_color_components = 1;  in jpeg_calc_output_dimensions()
179     cinfo->out_color_components = RGB_PIXELSIZE;  in jpeg_calc_output_dimensions()
183     cinfo->out_color_components = 3;  in jpeg_calc_output_dimensions()
187     cinfo->out_color_components = 4;  in jpeg_calc_output_dimensions()
190     cinfo->out_color_components = cinfo->num_components;  in jpeg_calc_output_dimensions()
193   cinfo->output_components = (cinfo->quantize_colors ? 1 :  in jpeg_calc_output_dimensions()
194 			      cinfo->out_color_components);  in jpeg_calc_output_dimensions()
197   if (use_merged_upsample(cinfo))  in jpeg_calc_output_dimensions()
198     cinfo->rec_outbuf_height = cinfo->max_v_samp_factor;  in jpeg_calc_output_dimensions()
200     cinfo->rec_outbuf_height = 1;  in jpeg_calc_output_dimensions()
248 prepare_range_limit_table (j_decompress_ptr cinfo)  in prepare_range_limit_table()  argument
255     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,  in prepare_range_limit_table()
258   cinfo->sample_range_limit = table;  in prepare_range_limit_table()
272 	  cinfo->sample_range_limit, CENTERJSAMPLE * SIZEOF(JSAMPLE));  in prepare_range_limit_table()
288 master_selection (j_decompress_ptr cinfo)  in master_selection()  argument
290   my_master_ptr master = (my_master_ptr) cinfo->master;  in master_selection()
296   jpeg_calc_output_dimensions(cinfo);  in master_selection()
297   prepare_range_limit_table(cinfo);  in master_selection()
300   samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components;  in master_selection()
303     ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);  in master_selection()
307   master->using_merged_upsample = use_merged_upsample(cinfo);  in master_selection()
313   if (! cinfo->quantize_colors || ! cinfo->buffered_image) {  in master_selection()
314     cinfo->enable_1pass_quant = FALSE;  in master_selection()
315     cinfo->enable_external_quant = FALSE;  in master_selection()
316     cinfo->enable_2pass_quant = FALSE;  in master_selection()
318   if (cinfo->quantize_colors) {  in master_selection()
319     if (cinfo->raw_data_out)  in master_selection()
320       ERREXIT(cinfo, JERR_NOTIMPL);  in master_selection()
322     if (cinfo->out_color_components != 3) {  in master_selection()
323       cinfo->enable_1pass_quant = TRUE;  in master_selection()
324       cinfo->enable_external_quant = FALSE;  in master_selection()
325       cinfo->enable_2pass_quant = FALSE;  in master_selection()
326       cinfo->colormap = NULL;  in master_selection()
327     } else if (cinfo->colormap != NULL) {  in master_selection()
328       cinfo->enable_external_quant = TRUE;  in master_selection()
329     } else if (cinfo->two_pass_quantize) {  in master_selection()
330       cinfo->enable_2pass_quant = TRUE;  in master_selection()
332       cinfo->enable_1pass_quant = TRUE;  in master_selection()
335     if (cinfo->enable_1pass_quant) {  in master_selection()
337       jinit_1pass_quantizer(cinfo);  in master_selection()
338       master->quantizer_1pass = cinfo->cquantize;  in master_selection()
340       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
345     if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {  in master_selection()
347       jinit_2pass_quantizer(cinfo);  in master_selection()
348       master->quantizer_2pass = cinfo->cquantize;  in master_selection()
350       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
359   if (! cinfo->raw_data_out) {  in master_selection()
362       jinit_merged_upsampler(cinfo); /* does color conversion too */  in master_selection()
364       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
367       jinit_color_deconverter(cinfo);  in master_selection()
368       jinit_upsampler(cinfo);  in master_selection()
370     jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);  in master_selection()
373   jinit_inverse_dct(cinfo);  in master_selection()
375   if (cinfo->arith_code) {  in master_selection()
376     ERREXIT(cinfo, JERR_ARITH_NOTIMPL);  in master_selection()
378     if (cinfo->progressive_mode) {  in master_selection()
380       jinit_phuff_decoder(cinfo);  in master_selection()
382       ERREXIT(cinfo, JERR_NOT_COMPILED);  in master_selection()
385       jinit_huff_decoder(cinfo);  in master_selection()
389   use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;  in master_selection()
390   jinit_d_coef_controller(cinfo, use_c_buffer);  in master_selection()
392   if (! cinfo->raw_data_out)  in master_selection()
393     jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);  in master_selection()
396   (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);  in master_selection()
399   (*cinfo->inputctl->start_input_pass) (cinfo);  in master_selection()
406   if (cinfo->progress != NULL && ! cinfo->buffered_image &&  in master_selection()
407       cinfo->inputctl->has_multiple_scans) {  in master_selection()
410     if (cinfo->progressive_mode) {  in master_selection()
412       nscans = 2 + 3 * cinfo->num_components;  in master_selection()
415       nscans = cinfo->num_components;  in master_selection()
417     cinfo->progress->pass_counter = 0L;  in master_selection()
418     cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;  in master_selection()
419     cinfo->progress->completed_passes = 0;  in master_selection()
420     cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2);  in master_selection()
438 prepare_for_output_pass (j_decompress_ptr cinfo)  in prepare_for_output_pass()  argument
440   my_master_ptr master = (my_master_ptr) cinfo->master;  in prepare_for_output_pass()
446     (*cinfo->cquantize->start_pass) (cinfo, FALSE);  in prepare_for_output_pass()
447     (*cinfo->post->start_pass) (cinfo, JBUF_CRANK_DEST);  in prepare_for_output_pass()
448     (*cinfo->main->start_pass) (cinfo, JBUF_CRANK_DEST);  in prepare_for_output_pass()
450     ERREXIT(cinfo, JERR_NOT_COMPILED);  in prepare_for_output_pass()
453     if (cinfo->quantize_colors && cinfo->colormap == NULL) {  in prepare_for_output_pass()
455       if (cinfo->two_pass_quantize && cinfo->enable_2pass_quant) {  in prepare_for_output_pass()
456 	cinfo->cquantize = master->quantizer_2pass;  in prepare_for_output_pass()
458       } else if (cinfo->enable_1pass_quant) {  in prepare_for_output_pass()
459 	cinfo->cquantize = master->quantizer_1pass;  in prepare_for_output_pass()
461 	ERREXIT(cinfo, JERR_MODE_CHANGE);  in prepare_for_output_pass()
464     (*cinfo->idct->start_pass) (cinfo);  in prepare_for_output_pass()
465     (*cinfo->coef->start_output_pass) (cinfo);  in prepare_for_output_pass()
466     if (! cinfo->raw_data_out) {  in prepare_for_output_pass()
468 	(*cinfo->cconvert->start_pass) (cinfo);  in prepare_for_output_pass()
469       (*cinfo->upsample->start_pass) (cinfo);  in prepare_for_output_pass()
470       if (cinfo->quantize_colors)  in prepare_for_output_pass()
471 	(*cinfo->cquantize->start_pass) (cinfo, master->pub.is_dummy_pass);  in prepare_for_output_pass()
472       (*cinfo->post->start_pass) (cinfo,  in prepare_for_output_pass()
474       (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);  in prepare_for_output_pass()
479   if (cinfo->progress != NULL) {  in prepare_for_output_pass()
480     cinfo->progress->completed_passes = master->pass_number;  in prepare_for_output_pass()
481     cinfo->progress->total_passes = master->pass_number +  in prepare_for_output_pass()
486     if (cinfo->buffered_image && ! cinfo->inputctl->eoi_reached) {  in prepare_for_output_pass()
487       cinfo->progress->total_passes += (cinfo->enable_2pass_quant ? 2 : 1);  in prepare_for_output_pass()
498 finish_output_pass (j_decompress_ptr cinfo)  in finish_output_pass()  argument
500   my_master_ptr master = (my_master_ptr) cinfo->master;  in finish_output_pass()
502   if (cinfo->quantize_colors)  in finish_output_pass()
503     (*cinfo->cquantize->finish_pass) (cinfo);  in finish_output_pass()
515 jpeg_new_colormap (j_decompress_ptr cinfo)  in jpeg_new_colormap()  argument
517   my_master_ptr master = (my_master_ptr) cinfo->master;  in jpeg_new_colormap()
520   if (cinfo->global_state != DSTATE_BUFIMAGE)  in jpeg_new_colormap()
521     ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  in jpeg_new_colormap()
523   if (cinfo->quantize_colors && cinfo->enable_external_quant &&  in jpeg_new_colormap()
524       cinfo->colormap != NULL) {  in jpeg_new_colormap()
526     cinfo->cquantize = master->quantizer_2pass;  in jpeg_new_colormap()
528     (*cinfo->cquantize->new_color_map) (cinfo);  in jpeg_new_colormap()
531     ERREXIT(cinfo, JERR_MODE_CHANGE);  in jpeg_new_colormap()
543 jinit_master_decompress (j_decompress_ptr cinfo)  in jinit_master_decompress()  argument
548       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,  in jinit_master_decompress()
550   cinfo->master = (struct jpeg_decomp_master *) master;  in jinit_master_decompress()
556   master_selection(cinfo);  in jinit_master_decompress()