ReactOS  0.4.15-dev-439-g292f67a
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 
32 static j_common_ptr sig_cinfo;
33 
34 void /* must be global for Manx C */
35 signal_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 
46 GLOBAL(void)
47 enable_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 
67 METHODDEF(void)
68 progress_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  }
83  fflush(stderr);
84  }
85 }
86 
87 
88 GLOBAL(void)
89 start_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;
96  progress->percent_done = -1;
97  cinfo->progress = &progress->pub;
98  }
99 }
100 
101 
102 GLOBAL(void)
103 end_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 
121 GLOBAL(boolean)
122 keymatch (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 
148 GLOBAL(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 
166 GLOBAL(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 READ_BINARY
Definition: jmemdos.c:77
#define TRUE
Definition: types.h:120
char * prog
Definition: isohybrid.c:47
FILE * stdin
#define SIGINT
Definition: signal.h:23
FILE * stdout
read_stdin(void)
Definition: cdjpeg.c:149
int signal
Definition: except.c:82
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
int total_extra_passes
Definition: cdjpeg.h:85
smooth NULL
Definition: ftsmooth.c:416
keymatch(char *arg, const char *keyword, int minchars)
Definition: cdjpeg.c:122
const char int minchars
Definition: cdjpeg.h:154
_Check_return_ _CRTIMP int __cdecl fileno(_In_ FILE *_File)
#define isupper(c)
Definition: acclib.h:71
#define EXIT_FAILURE
Definition: jerror.c:33
struct jpeg_progress_mgr pub
Definition: cdjpeg.h:83
static const WCHAR L[]
Definition: oid.c:1250
_Check_return_ _CRTIMP int __cdecl setmode(_In_ int _FileHandle, _In_ int _Mode)
#define WRITE_BINARY
Definition: wrjpgcom.c:47
#define SIGTERM
Definition: signal.h:39
#define GLOBAL(type)
Definition: jmorecfg.h:291
#define METHODDEF(type)
Definition: jmorecfg.h:287
int completed_extra_passes
Definition: cdjpeg.h:84
_Check_return_opt_ _CRTIMP int __cdecl fflush(_Inout_opt_ FILE *_File)
#define O_BINARY
Definition: acwin.h:109
_Check_return_ _CRTIMP FILE *__cdecl fdopen(_In_ int _FileHandle, _In_z_ const char *_Format)
cd_progress_ptr progress
Definition: cdjpeg.h:152
write_stdout(void)
Definition: cdjpeg.c:167
struct cdjpeg_progress_mgr * cd_progress_ptr
Definition: cdjpeg.h:90
FILE * stderr
#define const
Definition: zconf.h:230
jpeg_destroy(j_common_ptr cinfo)
Definition: jcomapi.c:70
void exit(int exitcode)
Definition: _exit.c:33
static const WCHAR ca[]
Definition: main.c:455
int tolower(int c)
Definition: utclib.c:902