5  * Copyright (C) 1995-1997, Thomas G. Lane.
6  * libjpeg-turbo Modifications:
30  * The entire image is read into a set of virtual coefficient-block arrays,
32  * virtual-array descriptors.  These can be manipulated directly via the
38  * during a buffered-image-mode decompression operation.  This is allowed
51   if (cinfo->global_state == DSTATE_READY) {  in jpeg_read_coefficients()
54     cinfo->global_state = DSTATE_RDCOEFS;  in jpeg_read_coefficients()
56   if (cinfo->global_state == DSTATE_RDCOEFS) {  in jpeg_read_coefficients()
60       /* Call progress monitor hook if present */  in jpeg_read_coefficients()
61       if (cinfo->progress != NULL)  in jpeg_read_coefficients()
62         (*cinfo->progress->progress_monitor) ((j_common_ptr)cinfo);  in jpeg_read_coefficients()
64       retcode = (*cinfo->inputctl->consume_input) (cinfo);  in jpeg_read_coefficients()
69       /* Advance progress counter if appropriate */  in jpeg_read_coefficients()
70       if (cinfo->progress != NULL &&  in jpeg_read_coefficients()
72         if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {  in jpeg_read_coefficients()
74           cinfo->progress->pass_limit += (long)cinfo->total_iMCU_rows;  in jpeg_read_coefficients()
79     cinfo->global_state = DSTATE_STOPPING;  in jpeg_read_coefficients()
83    * to the coefficients during a full buffered-image-mode decompression.  in jpeg_read_coefficients()
85   if ((cinfo->global_state == DSTATE_STOPPING ||  in jpeg_read_coefficients()
86        cinfo->global_state == DSTATE_BUFIMAGE) && cinfo->buffered_image) {  in jpeg_read_coefficients()
87     return cinfo->coef->coef_arrays;  in jpeg_read_coefficients()
90   ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  in jpeg_read_coefficients()
103   /* This is effectively a buffered-image operation. */  in transdecode_master_selection()
104   cinfo->buffered_image = TRUE;  in transdecode_master_selection()
112   if (cinfo->arith_code) {  in transdecode_master_selection()
119     if (cinfo->progressive_mode) {  in transdecode_master_selection()
129   /* Always get a full-image coefficient buffer. */  in transdecode_master_selection()
133   (*cinfo->mem->realize_virt_arrays) ((j_common_ptr)cinfo);  in transdecode_master_selection()
136   (*cinfo->inputctl->start_input_pass) (cinfo);  in transdecode_master_selection()
138   /* Initialize progress monitoring. */  in transdecode_master_selection()
139   if (cinfo->progress != NULL) {  in transdecode_master_selection()
142     if (cinfo->progressive_mode) {  in transdecode_master_selection()
144       nscans = 2 + 3 * cinfo->num_components;  in transdecode_master_selection()
145     } else if (cinfo->inputctl->has_multiple_scans) {  in transdecode_master_selection()
147       nscans = cinfo->num_components;  in transdecode_master_selection()
151     cinfo->progress->pass_counter = 0L;  in transdecode_master_selection()
152     cinfo->progress->pass_limit = (long)cinfo->total_iMCU_rows * nscans;  in transdecode_master_selection()
153     cinfo->progress->completed_passes = 0;  in transdecode_master_selection()
154     cinfo->progress->total_passes = 1;  in transdecode_master_selection()