4 * This file was part of the Independent JPEG Group's software:
5 * Copyright (C) 1991-1997, Thomas G. Lane.
6 * libjpeg-turbo Modifications:
7 * Copyright (C) 2019, 2022, D. R. Commander.
8 * For conditions of distribution and use, see the accompanying README.ijg
11 * This file contains common support routines used by the IJG application
12 * programs (cjpeg, djpeg, jpegtran).
15 #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
16 #include <ctype.h> /* to declare isupper(), tolower() */
18 #include <fcntl.h> /* to declare setmode()'s parameter macros */
19 /* If you have setmode() but not <io.h>, just delete this line: */
20 #include <io.h> /* to declare setmode() */
25 * Optional progress monitor: display a percent-done figure on stderr.
29 progress_monitor(j_common_ptr cinfo)
31 cd_progress_ptr prog = (cd_progress_ptr)cinfo->progress;
33 if (prog->max_scans != 0 && cinfo->is_decompressor) {
34 int scan_no = ((j_decompress_ptr)cinfo)->input_scan_number;
36 if (scan_no > (int)prog->max_scans) {
37 fprintf(stderr, "Scan number %d exceeds maximum scans (%u)\n", scan_no,
44 int total_passes = prog->pub.total_passes + prog->total_extra_passes;
46 (int)(prog->pub.pass_counter * 100L / prog->pub.pass_limit);
48 if (percent_done != prog->percent_done) {
49 prog->percent_done = percent_done;
50 if (total_passes > 1) {
51 fprintf(stderr, "\rPass %d/%d: %3d%% ",
52 prog->pub.completed_passes + prog->completed_extra_passes + 1,
53 total_passes, percent_done);
55 fprintf(stderr, "\r %3d%% ", percent_done);
64 start_progress_monitor(j_common_ptr cinfo, cd_progress_ptr progress)
66 /* Enable progress display, unless trace output is on */
67 if (cinfo->err->trace_level == 0) {
68 progress->pub.progress_monitor = progress_monitor;
69 progress->completed_extra_passes = 0;
70 progress->total_extra_passes = 0;
71 progress->max_scans = 0;
72 progress->report = FALSE;
73 progress->percent_done = -1;
74 cinfo->progress = &progress->pub;
80 end_progress_monitor(j_common_ptr cinfo)
82 /* Clear away progress display */
83 if (cinfo->err->trace_level == 0) {
84 fprintf(stderr, "\r \r");
91 * Case-insensitive matching of possibly-abbreviated keyword switches.
92 * keyword is the constant keyword (must be lower case already),
93 * minchars is length of minimum legal abbreviation.
97 keymatch(char *arg, const char *keyword, int minchars)
100 register int nmatched = 0;
102 while ((ca = *arg++) != '\0') {
103 if ((ck = *keyword++) == '\0')
104 return FALSE; /* arg longer than keyword, no good */
105 if (isupper(ca)) /* force arg to lcase (assume ck is already) */
108 return FALSE; /* no good */
109 nmatched++; /* count matched characters */
111 /* reached end of argument; fail if it's too short for unique abbrev */
112 if (nmatched < minchars)
114 return TRUE; /* A-OK */
119 * Routines to establish binary I/O mode for stdin and stdout.
120 * Non-Unix systems often require some hacking to get out of text mode.
126 FILE *input_file = stdin;
128 #ifdef USE_SETMODE /* need to hack file mode? */
129 setmode(fileno(stdin), O_BINARY);
131 #ifdef USE_FDOPEN /* need to re-open in binary mode? */
132 if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
133 fprintf(stderr, "Cannot reopen stdin\n");
144 FILE *output_file = stdout;
146 #ifdef USE_SETMODE /* need to hack file mode? */
147 setmode(fileno(stdout), O_BINARY);
149 #ifdef USE_FDOPEN /* need to re-open in binary mode? */
150 if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
151 fprintf(stderr, "Cannot reopen stdout\n");