ReactOS 0.4.15-dev-7704-gc07eb9f
cdjpeg.c
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1/*
2 * cdjpeg.c
3 *
4 * Copyright (C) 1991-1997, Thomas G. Lane.
5 * This file is part of the Independent JPEG Group's software.
6 * For conditions of distribution and use, see the accompanying README file.
7 *
8 * This file contains common support routines used by the IJG application
9 * programs (cjpeg, djpeg, jpegtran).
10 */
11
12#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
13#include <ctype.h> /* to declare isupper(), tolower() */
14#ifdef NEED_SIGNAL_CATCHER
15#include <signal.h> /* to declare signal() */
16#endif
17#ifdef USE_SETMODE
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() */
21#endif
22
23
24/*
25 * Signal catcher to ensure that temporary files are removed before aborting.
26 * NB: for Amiga Manx C this is actually a global routine named _abort();
27 * we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
28 */
29
30#ifdef NEED_SIGNAL_CATCHER
31
32static j_common_ptr sig_cinfo;
33
34void /* must be global for Manx C */
35signal_catcher (int signum)
36{
37 if (sig_cinfo != NULL) {
38 if (sig_cinfo->err != NULL) /* turn off trace output */
39 sig_cinfo->err->trace_level = 0;
40 jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
41 }
43}
44
45
46GLOBAL(void)
47enable_signal_catcher (j_common_ptr cinfo)
48{
49 sig_cinfo = cinfo;
50#ifdef SIGINT /* not all systems have SIGINT */
51 signal(SIGINT, signal_catcher);
52#endif
53#ifdef SIGTERM /* not all systems have SIGTERM */
54 signal(SIGTERM, signal_catcher);
55#endif
56}
57
58#endif
59
60
61/*
62 * Optional progress monitor: display a percent-done figure on stderr.
63 */
64
65#ifdef PROGRESS_REPORT
66
67METHODDEF(void)
68progress_monitor (j_common_ptr cinfo)
69{
70 cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
71 int total_passes = prog->pub.total_passes + prog->total_extra_passes;
72 int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
73
74 if (percent_done != prog->percent_done) {
75 prog->percent_done = percent_done;
76 if (total_passes > 1) {
77 fprintf(stderr, "\rPass %d/%d: %3d%% ",
78 prog->pub.completed_passes + prog->completed_extra_passes + 1,
79 total_passes, percent_done);
80 } else {
81 fprintf(stderr, "\r %3d%% ", percent_done);
82 }
84 }
85}
86
87
88GLOBAL(void)
89start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress)
90{
91 /* Enable progress display, unless trace output is on */
92 if (cinfo->err->trace_level == 0) {
93 progress->pub.progress_monitor = progress_monitor;
97 cinfo->progress = &progress->pub;
98 }
99}
100
101
102GLOBAL(void)
103end_progress_monitor (j_common_ptr cinfo)
104{
105 /* Clear away progress display */
106 if (cinfo->err->trace_level == 0) {
107 fprintf(stderr, "\r \r");
108 fflush(stderr);
109 }
110}
111
112#endif
113
114
115/*
116 * Case-insensitive matching of possibly-abbreviated keyword switches.
117 * keyword is the constant keyword (must be lower case already),
118 * minchars is length of minimum legal abbreviation.
119 */
120
121GLOBAL(boolean)
122keymatch (char * arg, const char * keyword, int minchars)
123{
124 register int ca, ck;
125 register int nmatched = 0;
126
127 while ((ca = *arg++) != '\0') {
128 if ((ck = *keyword++) == '\0')
129 return FALSE; /* arg longer than keyword, no good */
130 if (isupper(ca)) /* force arg to lcase (assume ck is already) */
131 ca = tolower(ca);
132 if (ca != ck)
133 return FALSE; /* no good */
134 nmatched++; /* count matched characters */
135 }
136 /* reached end of argument; fail if it's too short for unique abbrev */
137 if (nmatched < minchars)
138 return FALSE;
139 return TRUE; /* A-OK */
140}
141
142
143/*
144 * Routines to establish binary I/O mode for stdin and stdout.
145 * Non-Unix systems often require some hacking to get out of text mode.
146 */
147
148GLOBAL(FILE *)
150{
151 FILE * input_file = stdin;
152
153#ifdef USE_SETMODE /* need to hack file mode? */
155#endif
156#ifdef USE_FDOPEN /* need to re-open in binary mode? */
157 if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
158 fprintf(stderr, "Cannot reopen stdin\n");
160 }
161#endif
162 return input_file;
163}
164
165
166GLOBAL(FILE *)
168{
169 FILE * output_file = stdout;
170
171#ifdef USE_SETMODE /* need to hack file mode? */
173#endif
174#ifdef USE_FDOPEN /* need to re-open in binary mode? */
175 if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
176 fprintf(stderr, "Cannot reopen stdout\n");
178 }
179#endif
180 return output_file;
181}
#define isupper(c)
Definition: acclib.h:71
int tolower(int c)
Definition: utclib.c:902
#define fileno
Definition: acwin.h:102
#define O_BINARY
Definition: acwin.h:109
read_stdin(void)
Definition: cdjpeg.c:149
write_stdout(void)
Definition: cdjpeg.c:167
keymatch(char *arg, const char *keyword, int minchars)
Definition: cdjpeg.c:122
cd_progress_ptr progress
Definition: cdjpeg.h:152
struct cdjpeg_progress_mgr * cd_progress_ptr
Definition: cdjpeg.h:90
const char int minchars
Definition: cdjpeg.h:154
#define SIGINT
Definition: signal.h:23
#define SIGTERM
Definition: signal.h:39
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
static const WCHAR ca[]
Definition: main.c:455
#define stdout
Definition: stdio.h:99
#define stderr
Definition: stdio.h:100
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
_Check_return_opt_ _CRTIMP int __cdecl fflush(_Inout_opt_ FILE *_File)
_Check_return_ _CRTIMP FILE *__cdecl fdopen(_In_ int _FileHandle, _In_z_ const char *_Format)
#define stdin
Definition: stdio.h:98
char * prog
Definition: isohybrid.c:47
jpeg_destroy(j_common_ptr cinfo)
Definition: jcomapi.c:70
#define EXIT_FAILURE
Definition: jerror.c:33
#define READ_BINARY
Definition: jmemdos.c:77
#define METHODDEF(type)
Definition: jmorecfg.h:287
#define GLOBAL(type)
Definition: jmorecfg.h:291
#define exit(n)
Definition: config.h:202
int signal
Definition: except.c:82
#define setmode(f, m)
Definition: io.h:42
int total_extra_passes
Definition: cdjpeg.h:85
struct jpeg_progress_mgr pub
Definition: cdjpeg.h:83
int completed_extra_passes
Definition: cdjpeg.h:84
#define WRITE_BINARY
Definition: wrjpgcom.c:47
#define const
Definition: zconf.h:233