ReactOS  0.4.14-dev-552-g2fad488
rdjpgcom.c File Reference
#include "jinclude.h"
#include <ctype.h>
Include dependency graph for rdjpgcom.c:

Go to the source code of this file.

Macros

#define JPEG_CJPEG_DJPEG   /* to get the command-line config symbols */
 
#define READ_BINARY   "rb"
 
#define EXIT_FAILURE   1
 
#define EXIT_SUCCESS   0
 
#define NEXTBYTE()   getc(infile)
 
#define ERREXIT(msg)   (fprintf(stderr, "%s\n", msg), exit(EXIT_FAILURE))
 
#define M_SOF0   0xC0 /* Start Of Frame N */
 
#define M_SOF1   0xC1 /* N indicates which compression process */
 
#define M_SOF2   0xC2 /* Only SOF0-SOF2 are now in common use */
 
#define M_SOF3   0xC3
 
#define M_SOF5   0xC5 /* NB: codes C4 and CC are NOT SOF markers */
 
#define M_SOF6   0xC6
 
#define M_SOF7   0xC7
 
#define M_SOF9   0xC9
 
#define M_SOF10   0xCA
 
#define M_SOF11   0xCB
 
#define M_SOF13   0xCD
 
#define M_SOF14   0xCE
 
#define M_SOF15   0xCF
 
#define M_SOI   0xD8 /* Start Of Image (beginning of datastream) */
 
#define M_EOI   0xD9 /* End Of Image (end of datastream) */
 
#define M_SOS   0xDA /* Start Of Scan (begins compressed data) */
 
#define M_APP0   0xE0 /* Application-specific marker, type N */
 
#define M_APP12   0xEC /* (we don't bother to list all 16 APPn's) */
 
#define M_COM   0xFE /* COMment */
 

Functions

static int read_1_byte (void)
 
static unsigned int read_2_bytes (void)
 
static int next_marker (void)
 
static int first_marker (void)
 
static void skip_variable (void)
 
static void process_COM (int raw)
 
static void process_SOFn (int marker)
 
static int scan_JPEG_header (int verbose, int raw)
 
static void usage (void)
 
static int keymatch (char *arg, const char *keyword, int minchars)
 
int main (int argc, char **argv)
 

Variables

static FILEinfile
 
static const charprogname
 

Macro Definition Documentation

◆ ERREXIT

#define ERREXIT (   msg)    (fprintf(stderr, "%s\n", msg), exit(EXIT_FAILURE))

Definition at line 72 of file rdjpgcom.c.

◆ EXIT_FAILURE

#define EXIT_FAILURE   1

Definition at line 49 of file rdjpgcom.c.

◆ EXIT_SUCCESS

#define EXIT_SUCCESS   0

Definition at line 55 of file rdjpgcom.c.

◆ JPEG_CJPEG_DJPEG

#define JPEG_CJPEG_DJPEG   /* to get the command-line config symbols */

Definition at line 15 of file rdjpgcom.c.

◆ M_APP0

#define M_APP0   0xE0 /* Application-specific marker, type N */

Definition at line 126 of file rdjpgcom.c.

◆ M_APP12

#define M_APP12   0xEC /* (we don't bother to list all 16 APPn's) */

Definition at line 127 of file rdjpgcom.c.

◆ M_COM

#define M_COM   0xFE /* COMment */

Definition at line 128 of file rdjpgcom.c.

◆ M_EOI

#define M_EOI   0xD9 /* End Of Image (end of datastream) */

Definition at line 124 of file rdjpgcom.c.

◆ M_SOF0

#define M_SOF0   0xC0 /* Start Of Frame N */

Definition at line 110 of file rdjpgcom.c.

◆ M_SOF1

#define M_SOF1   0xC1 /* N indicates which compression process */

Definition at line 111 of file rdjpgcom.c.

◆ M_SOF10

#define M_SOF10   0xCA

Definition at line 118 of file rdjpgcom.c.

◆ M_SOF11

#define M_SOF11   0xCB

Definition at line 119 of file rdjpgcom.c.

◆ M_SOF13

#define M_SOF13   0xCD

Definition at line 120 of file rdjpgcom.c.

◆ M_SOF14

#define M_SOF14   0xCE

Definition at line 121 of file rdjpgcom.c.

◆ M_SOF15

#define M_SOF15   0xCF

Definition at line 122 of file rdjpgcom.c.

◆ M_SOF2

#define M_SOF2   0xC2 /* Only SOF0-SOF2 are now in common use */

Definition at line 112 of file rdjpgcom.c.

◆ M_SOF3

#define M_SOF3   0xC3

Definition at line 113 of file rdjpgcom.c.

◆ M_SOF5

#define M_SOF5   0xC5 /* NB: codes C4 and CC are NOT SOF markers */

Definition at line 114 of file rdjpgcom.c.

◆ M_SOF6

#define M_SOF6   0xC6

Definition at line 115 of file rdjpgcom.c.

◆ M_SOF7

#define M_SOF7   0xC7

Definition at line 116 of file rdjpgcom.c.

◆ M_SOF9

#define M_SOF9   0xC9

Definition at line 117 of file rdjpgcom.c.

◆ M_SOI

#define M_SOI   0xD8 /* Start Of Image (beginning of datastream) */

Definition at line 123 of file rdjpgcom.c.

◆ M_SOS

#define M_SOS   0xDA /* Start Of Scan (begins compressed data) */

Definition at line 125 of file rdjpgcom.c.

◆ NEXTBYTE

#define NEXTBYTE ( )    getc(infile)

Definition at line 68 of file rdjpgcom.c.

◆ READ_BINARY

#define READ_BINARY   "rb"

Definition at line 44 of file rdjpgcom.c.

Function Documentation

◆ first_marker()

static int first_marker ( void  )
static

Definition at line 177 of file rdjpgcom.c.

178 {
179  int c1, c2;
180 
181  c1 = NEXTBYTE();
182  c2 = NEXTBYTE();
183  if (c1 != 0xFF || c2 != M_SOI)
184  ERREXIT("Not a JPEG file");
185  return c2;
186 }
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
#define NEXTBYTE()
Definition: rdjpgcom.c:68
#define M_SOI
Definition: rdjpgcom.c:123

Referenced by scan_JPEG_header().

◆ keymatch()

static int keymatch ( char arg,
const char keyword,
int  minchars 
)
static

Definition at line 425 of file rdjpgcom.c.

429 {
430  register int ca, ck;
431  register int nmatched = 0;
432 
433  while ((ca = *arg++) != '\0') {
434  if ((ck = *keyword++) == '\0')
435  return 0; /* arg longer than keyword, no good */
436  if (isupper(ca)) /* force arg to lcase (assume ck is already) */
437  ca = tolower(ca);
438  if (ca != ck)
439  return 0; /* no good */
440  nmatched++; /* count matched characters */
441  }
442  /* reached end of argument; fail if it's too short for unique abbrev */
443  if (nmatched < minchars)
444  return 0;
445  return 1; /* A-OK */
446 }
const char int minchars
Definition: cdjpeg.h:152
#define isupper(c)
Definition: acclib.h:71
static const WCHAR ca[]
Definition: main.c:455
int tolower(int c)
Definition: utclib.c:902

Referenced by main().

◆ main()

int main ( int argc  ,
char **  argv 
)

Definition at line 454 of file rdjpgcom.c.

455 {
456  int argn;
457  char * arg;
458  int verbose = 0, raw = 0;
459 
460  /* On Mac, fetch a command line. */
461 #ifdef USE_CCOMMAND
462  argc = ccommand(&argv);
463 #endif
464 
465  progname = argv[0];
466  if (progname == NULL || progname[0] == 0)
467  progname = "rdjpgcom"; /* in case C library doesn't provide it */
468 
469  /* Parse switches, if any */
470  for (argn = 1; argn < argc; argn++) {
471  arg = argv[argn];
472  if (arg[0] != '-')
473  break; /* not switch, must be file name */
474  arg++; /* advance over '-' */
475  if (keymatch(arg, "verbose", 1)) {
476  verbose++;
477  } else if (keymatch(arg, "raw", 1)) {
478  raw = 1;
479  } else
480  usage();
481  }
482 
483  /* Open the input file. */
484  /* Unix style: expect zero or one file name */
485  if (argn < argc-1) {
486  fprintf(stderr, "%s: only one input file\n", progname);
487  usage();
488  }
489  if (argn < argc) {
490  if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) {
491  fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
493  }
494  } else {
495  /* default input file is stdin */
496 #ifdef USE_SETMODE /* need to hack file mode? */
498 #endif
499 #ifdef USE_FDOPEN /* need to re-open in binary mode? */
500  if ((infile = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
501  fprintf(stderr, "%s: can't open stdin\n", progname);
503  }
504 #else
505  infile = stdin;
506 #endif
507  }
508 
509  /* Scan the JPEG headers. */
510  (void) scan_JPEG_header(verbose, raw);
511 
512  /* All done. */
514  return 0; /* suppress no-return-value warnings */
515 }
static int argc
Definition: ServiceArgs.c:12
static int keymatch(char *arg, const char *keyword, int minchars)
Definition: rdjpgcom.c:425
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
static FILE * infile
Definition: rdjpgcom.c:65
FILE * stdin
void * arg
Definition: msvc.h:12
#define argv
Definition: mplay32.c:18
#define verbose
Definition: rosglue.h:36
#define EXIT_SUCCESS
Definition: rdjpgcom.c:55
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
smooth NULL
Definition: ftsmooth.c:416
static void usage(void)
Definition: rdjpgcom.c:409
#define READ_BINARY
Definition: rdjpgcom.c:44
_Check_return_ _CRTIMP int __cdecl fileno(_In_ FILE *_File)
#define EXIT_FAILURE
Definition: rdjpgcom.c:49
_Check_return_ _CRTIMP FILE *__cdecl fopen(_In_z_ const char *_Filename, _In_z_ const char *_Mode)
_Check_return_ _CRTIMP int __cdecl setmode(_In_ int _FileHandle, _In_ int _Mode)
#define O_BINARY
Definition: acwin.h:109
_Check_return_ _CRTIMP FILE *__cdecl fdopen(_In_ int _FileHandle, _In_z_ const char *_Format)
FILE * stderr
static const char * progname
Definition: rdjpgcom.c:405
void exit(int exitcode)
Definition: _exit.c:33
static int scan_JPEG_header(int verbose, int raw)
Definition: rdjpgcom.c:340

◆ next_marker()

static int next_marker ( void  )
static

Definition at line 142 of file rdjpgcom.c.

143 {
144  int c;
145  int discarded_bytes = 0;
146 
147  /* Find 0xFF byte; count and skip any non-FFs. */
148  c = read_1_byte();
149  while (c != 0xFF) {
150  discarded_bytes++;
151  c = read_1_byte();
152  }
153  /* Get marker code byte, swallowing any duplicate FF bytes. Extra FFs
154  * are legal as pad bytes, so don't count them in discarded_bytes.
155  */
156  do {
157  c = read_1_byte();
158  } while (c == 0xFF);
159 
160  if (discarded_bytes != 0) {
161  fprintf(stderr, "Warning: garbage data found in JPEG file\n");
162  }
163 
164  return c;
165 }
static int read_1_byte(void)
Definition: rdjpgcom.c:77
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
const GLubyte * c
Definition: glext.h:8905
#define c
Definition: ke_i.h:80
FILE * stderr

Referenced by scan_JPEG_header().

◆ process_COM()

static void process_COM ( int  raw)
static

Definition at line 225 of file rdjpgcom.c.

226 {
227  unsigned int length;
228  int ch;
229  int lastch = 0;
230 
231  /* Bill Allombert: set locale properly for isprint */
232 #ifdef HAVE_LOCALE_H
233  setlocale(LC_CTYPE, "");
234 #endif
235 
236  /* Get the marker parameter length count */
237  length = read_2_bytes();
238  /* Length includes itself, so must be at least 2 */
239  if (length < 2)
240  ERREXIT("Erroneous JPEG marker length");
241  length -= 2;
242 
243  while (length > 0) {
244  ch = read_1_byte();
245  if (raw) {
246  putc(ch, stdout);
247  /* Emit the character in a readable form.
248  * Nonprintables are converted to \nnn form,
249  * while \ is converted to \\.
250  * Newlines in CR, CR/LF, or LF form will be printed as one newline.
251  */
252  } else if (ch == '\r') {
253  printf("\n");
254  } else if (ch == '\n') {
255  if (lastch != '\r')
256  printf("\n");
257  } else if (ch == '\\') {
258  printf("\\\\");
259  } else if (isprint(ch)) {
260  putc(ch, stdout);
261  } else {
262  printf("\\%03o", ch);
263  }
264  lastch = ch;
265  length--;
266  }
267  printf("\n");
268 
269  /* Bill Allombert: revert to C locale */
270 #ifdef HAVE_LOCALE_H
271  setlocale(LC_CTYPE, "C");
272 #endif
273 }
#define LC_CTYPE
Definition: locale.h:27
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
static int read_1_byte(void)
Definition: rdjpgcom.c:77
static unsigned int read_2_bytes(void)
Definition: rdjpgcom.c:90
FILE * stdout
_Check_return_opt_ _CRTIMP int __cdecl putc(_In_ int _Ch, _Inout_ FILE *_File)
GLenum GLuint GLenum GLsizei length
Definition: glext.h:5579
#define isprint(c)
Definition: acclib.h:73
#define setlocale(n, s)
Definition: locale.h:46
#define printf
Definition: config.h:203

Referenced by scan_JPEG_header().

◆ process_SOFn()

static void process_SOFn ( int  marker)
static

Definition at line 282 of file rdjpgcom.c.

283 {
284  unsigned int length;
285  unsigned int image_height, image_width;
286  int data_precision, num_components;
287  const char * process;
288  int ci;
289 
290  length = read_2_bytes(); /* usual parameter length count */
291 
292  data_precision = read_1_byte();
295  num_components = read_1_byte();
296 
297  switch (marker) {
298  case M_SOF0: process = "Baseline"; break;
299  case M_SOF1: process = "Extended sequential"; break;
300  case M_SOF2: process = "Progressive"; break;
301  case M_SOF3: process = "Lossless"; break;
302  case M_SOF5: process = "Differential sequential"; break;
303  case M_SOF6: process = "Differential progressive"; break;
304  case M_SOF7: process = "Differential lossless"; break;
305  case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
306  case M_SOF10: process = "Progressive, arithmetic coding"; break;
307  case M_SOF11: process = "Lossless, arithmetic coding"; break;
308  case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
309  case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
310  case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
311  default: process = "Unknown"; break;
312  }
313 
314  printf("JPEG image is %uw * %uh, %d color components, %d bits per sample\n",
315  image_width, image_height, num_components, data_precision);
316  printf("JPEG process: %s\n", process);
317 
318  if (length != (unsigned int) (8 + num_components * 3))
319  ERREXIT("Bogus SOF marker length");
320 
321  for (ci = 0; ci < num_components; ci++) {
322  (void) read_1_byte(); /* Component ID code */
323  (void) read_1_byte(); /* H, V sampling factors */
324  (void) read_1_byte(); /* Quantization table number */
325  }
326 }
#define M_SOF6
Definition: rdjpgcom.c:115
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
#define M_SOF2
Definition: rdjpgcom.c:112
#define M_SOF1
Definition: rdjpgcom.c:111
static HANDLE process
Definition: process.c:76
#define M_SOF0
Definition: rdjpgcom.c:110
static int read_1_byte(void)
Definition: rdjpgcom.c:77
#define M_SOF7
Definition: rdjpgcom.c:116
static unsigned int read_2_bytes(void)
Definition: rdjpgcom.c:90
#define M_SOF3
Definition: rdjpgcom.c:113
int image_height
int image_width
#define M_SOF5
Definition: rdjpgcom.c:114
int marker
Definition: jpeglib.h:1027
#define M_SOF10
Definition: rdjpgcom.c:118
GLenum GLuint GLenum GLsizei length
Definition: glext.h:5579
#define M_SOF13
Definition: rdjpgcom.c:120
#define M_SOF11
Definition: rdjpgcom.c:119
#define M_SOF14
Definition: rdjpgcom.c:121
#define M_SOF15
Definition: rdjpgcom.c:122
#define M_SOF9
Definition: rdjpgcom.c:117
#define printf
Definition: config.h:203

Referenced by scan_JPEG_header().

◆ read_1_byte()

static int read_1_byte ( void  )
static

Definition at line 77 of file rdjpgcom.c.

78 {
79  int c;
80 
81  c = NEXTBYTE();
82  if (c == EOF)
83  ERREXIT("Premature EOF in JPEG file");
84  return c;
85 }
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
const GLubyte * c
Definition: glext.h:8905
#define NEXTBYTE()
Definition: rdjpgcom.c:68
#define EOF
Definition: stdio.h:24
#define c
Definition: ke_i.h:80

Referenced by next_marker(), process_COM(), process_SOFn(), and skip_variable().

◆ read_2_bytes()

static unsigned int read_2_bytes ( void  )
static

Definition at line 90 of file rdjpgcom.c.

91 {
92  int c1, c2;
93 
94  c1 = NEXTBYTE();
95  if (c1 == EOF)
96  ERREXIT("Premature EOF in JPEG file");
97  c2 = NEXTBYTE();
98  if (c2 == EOF)
99  ERREXIT("Premature EOF in JPEG file");
100  return (((unsigned int) c1) << 8) + ((unsigned int) c2);
101 }
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
#define NEXTBYTE()
Definition: rdjpgcom.c:68
#define EOF
Definition: stdio.h:24
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31

Referenced by process_COM(), process_SOFn(), and skip_variable().

◆ scan_JPEG_header()

static int scan_JPEG_header ( int  verbose,
int  raw 
)
static

Definition at line 340 of file rdjpgcom.c.

341 {
342  int marker;
343 
344  /* Expect SOI at start of file */
345  if (first_marker() != M_SOI)
346  ERREXIT("Expected SOI marker first");
347 
348  /* Scan miscellaneous markers until we reach SOS. */
349  for (;;) {
350  marker = next_marker();
351  switch (marker) {
352  /* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be,
353  * treated as SOFn. C4 in particular is actually DHT.
354  */
355  case M_SOF0: /* Baseline */
356  case M_SOF1: /* Extended sequential, Huffman */
357  case M_SOF2: /* Progressive, Huffman */
358  case M_SOF3: /* Lossless, Huffman */
359  case M_SOF5: /* Differential sequential, Huffman */
360  case M_SOF6: /* Differential progressive, Huffman */
361  case M_SOF7: /* Differential lossless, Huffman */
362  case M_SOF9: /* Extended sequential, arithmetic */
363  case M_SOF10: /* Progressive, arithmetic */
364  case M_SOF11: /* Lossless, arithmetic */
365  case M_SOF13: /* Differential sequential, arithmetic */
366  case M_SOF14: /* Differential progressive, arithmetic */
367  case M_SOF15: /* Differential lossless, arithmetic */
368  if (verbose)
370  else
371  skip_variable();
372  break;
373 
374  case M_SOS: /* stop before hitting compressed data */
375  return marker;
376 
377  case M_EOI: /* in case it's a tables-only JPEG stream */
378  return marker;
379 
380  case M_COM:
381  process_COM(raw);
382  break;
383 
384  case M_APP12:
385  /* Some digital camera makers put useful textual information into
386  * APP12 markers, so we print those out too when in -verbose mode.
387  */
388  if (verbose) {
389  printf("APP12 contains:\n");
390  process_COM(raw);
391  } else
392  skip_variable();
393  break;
394 
395  default: /* Anything else just gets skipped */
396  skip_variable(); /* we assume it has a parameter count... */
397  break;
398  }
399  } /* end loop */
400 }
static void skip_variable(void)
Definition: rdjpgcom.c:199
#define M_SOF6
Definition: rdjpgcom.c:115
static void process_COM(int raw)
Definition: rdjpgcom.c:225
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
static int first_marker(void)
Definition: rdjpgcom.c:177
#define M_SOF2
Definition: rdjpgcom.c:112
#define M_SOF1
Definition: rdjpgcom.c:111
#define M_SOF0
Definition: rdjpgcom.c:110
#define M_SOF7
Definition: rdjpgcom.c:116
#define M_SOF3
Definition: rdjpgcom.c:113
#define M_EOI
Definition: rdjpgcom.c:124
#define verbose
Definition: rosglue.h:36
static int next_marker(void)
Definition: rdjpgcom.c:142
#define M_SOF5
Definition: rdjpgcom.c:114
int marker
Definition: jpeglib.h:1027
#define M_SOF10
Definition: rdjpgcom.c:118
#define M_SOF13
Definition: rdjpgcom.c:120
#define M_APP12
Definition: rdjpgcom.c:127
#define M_SOF11
Definition: rdjpgcom.c:119
static void process_SOFn(int marker)
Definition: rdjpgcom.c:282
#define M_SOS
Definition: rdjpgcom.c:125
#define M_SOF14
Definition: rdjpgcom.c:121
#define M_SOF15
Definition: rdjpgcom.c:122
#define M_SOF9
Definition: rdjpgcom.c:117
#define M_COM
Definition: rdjpgcom.c:128
#define M_SOI
Definition: rdjpgcom.c:123
#define printf
Definition: config.h:203

Referenced by main().

◆ skip_variable()

static void skip_variable ( void  )
static

Definition at line 199 of file rdjpgcom.c.

201 {
202  unsigned int length;
203 
204  /* Get the marker parameter length count */
205  length = read_2_bytes();
206  /* Length includes itself, so must be at least 2 */
207  if (length < 2)
208  ERREXIT("Erroneous JPEG marker length");
209  length -= 2;
210  /* Skip over the remaining bytes */
211  while (length > 0) {
212  (void) read_1_byte();
213  length--;
214  }
215 }
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
static int read_1_byte(void)
Definition: rdjpgcom.c:77
static unsigned int read_2_bytes(void)
Definition: rdjpgcom.c:90
GLenum GLuint GLenum GLsizei length
Definition: glext.h:5579

Referenced by scan_JPEG_header().

◆ usage()

static void usage ( void  )
static

Definition at line 409 of file rdjpgcom.c.

411 {
412  fprintf(stderr, "rdjpgcom displays any textual comments in a JPEG file.\n");
413 
414  fprintf(stderr, "Usage: %s [switches] [inputfile]\n", progname);
415 
416  fprintf(stderr, "Switches (names may be abbreviated):\n");
417  fprintf(stderr, " -raw Display non-printable characters in comments (unsafe)\n");
418  fprintf(stderr, " -verbose Also display dimensions of JPEG image\n");
419 
421 }
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
#define EXIT_FAILURE
Definition: rdjpgcom.c:49
FILE * stderr
static const char * progname
Definition: rdjpgcom.c:405
void exit(int exitcode)
Definition: _exit.c:33

Referenced by main().

Variable Documentation

◆ infile

FILE* infile
static

Definition at line 65 of file rdjpgcom.c.

Referenced by jpeg_stdio_src(), main(), read_JPEG_file(), select_file_type(), and write_one_file().

◆ progname

const char* progname
static

Definition at line 405 of file rdjpgcom.c.

Referenced by main(), and usage().