1 files changed, 0 insertions, 496 deletions

diff --git a/libjpegtwrp/rdjpgcom.c b/libjpegtwrp/rdjpgcom.c
deleted file mode 100644
index ffe6fc621..000000000
--- a/libjpegtwrp/rdjpgcom.c
+++ /dev/null
@@ -1,496 +0,0 @@
-/*
- * rdjpgcom.c
- *
- * Copyright (C) 1994-1997, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This file contains a very simple stand-alone application that displays
- * the text in COM (comment) markers in a JFIF file.
- * This may be useful as an example of the minimum logic needed to parse
- * JPEG markers.
- */
-
-#define JPEG_CJPEG_DJPEG	/* to get the command-line config symbols */
-#include "jinclude.h"		/* get auto-config symbols, <stdio.h> */
-
-#include <ctype.h>		/* to declare isupper(), tolower() */
-#ifdef USE_SETMODE
-#include <fcntl.h>		/* to declare setmode()'s parameter macros */
-/* If you have setmode() but not <io.h>, just delete this line: */
-#include <io.h>			/* to declare setmode() */
-#endif
-
-#ifdef USE_CCOMMAND		/* command-line reader for Macintosh */
-#ifdef __MWERKS__
-#include <SIOUX.h>              /* Metrowerks needs this */
-#include <console.h>		/* ... and this */
-#endif
-#ifdef THINK_C
-#include <console.h>		/* Think declares it here */
-#endif
-#endif
-
-#ifdef DONT_USE_B_MODE		/* define mode parameters for fopen() */
-#define READ_BINARY	"r"
-#else
-#ifdef VMS			/* VMS is very nonstandard */
-#define READ_BINARY	"rb", "ctx=stm"
-#else				/* standard ANSI-compliant case */
-#define READ_BINARY	"rb"
-#endif
-#endif
-
-#ifndef EXIT_FAILURE		/* define exit() codes if not provided */
-#define EXIT_FAILURE  1
-#endif
-#ifndef EXIT_SUCCESS
-#ifdef VMS
-#define EXIT_SUCCESS  1		/* VMS is very nonstandard */
-#else
-#define EXIT_SUCCESS  0
-#endif
-#endif
-
-
-/*
- * These macros are used to read the input file.
- * To reuse this code in another application, you might need to change these.
- */
-
-static FILE * infile;		/* input JPEG file */
-
-/* Return next input byte, or EOF if no more */
-#define NEXTBYTE()  getc(infile)
-
-
-/* Error exit handler */
-#define ERREXIT(msg)  (fprintf(stderr, "%s\n", msg), exit(EXIT_FAILURE))
-
-
-/* Read one byte, testing for EOF */
-static int
-read_1_byte (void)
-{
-  int c;
-
-  c = NEXTBYTE();
-  if (c == EOF)
-    ERREXIT("Premature EOF in JPEG file");
-  return c;
-}
-
-/* Read 2 bytes, convert to unsigned int */
-/* All 2-byte quantities in JPEG markers are MSB first */
-static unsigned int
-read_2_bytes (void)
-{
-  int c1, c2;
-
-  c1 = NEXTBYTE();
-  if (c1 == EOF)
-    ERREXIT("Premature EOF in JPEG file");
-  c2 = NEXTBYTE();
-  if (c2 == EOF)
-    ERREXIT("Premature EOF in JPEG file");
-  return (((unsigned int) c1) << 8) + ((unsigned int) c2);
-}
-
-
-/*
- * JPEG markers consist of one or more 0xFF bytes, followed by a marker
- * code byte (which is not an FF).  Here are the marker codes of interest
- * in this program.  (See jdmarker.c for a more complete list.)
- */
-
-#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 */
-
-
-/*
- * Find the next JPEG marker and return its marker code.
- * We expect at least one FF byte, possibly more if the compressor used FFs
- * to pad the file.
- * There could also be non-FF garbage between markers.  The treatment of such
- * garbage is unspecified; we choose to skip over it but emit a warning msg.
- * NB: this routine must not be used after seeing SOS marker, since it will
- * not deal correctly with FF/00 sequences in the compressed image data...
- */
-
-static int
-next_marker (void)
-{
-  int c;
-  int discarded_bytes = 0;
-
-  /* Find 0xFF byte; count and skip any non-FFs. */
-  c = read_1_byte();
-  while (c != 0xFF) {
-    discarded_bytes++;
-    c = read_1_byte();
-  }
-  /* Get marker code byte, swallowing any duplicate FF bytes.  Extra FFs
-   * are legal as pad bytes, so don't count them in discarded_bytes.
-   */
-  do {
-    c = read_1_byte();
-  } while (c == 0xFF);
-
-  if (discarded_bytes != 0) {
-    fprintf(stderr, "Warning: garbage data found in JPEG file\n");
-  }
-
-  return c;
-}
-
-
-/*
- * Read the initial marker, which should be SOI.
- * For a JFIF file, the first two bytes of the file should be literally
- * 0xFF M_SOI.  To be more general, we could use next_marker, but if the
- * input file weren't actually JPEG at all, next_marker might read the whole
- * file and then return a misleading error message...
- */
-
-static int
-first_marker (void)
-{
-  int c1, c2;
-
-  c1 = NEXTBYTE();
-  c2 = NEXTBYTE();
-  if (c1 != 0xFF || c2 != M_SOI)
-    ERREXIT("Not a JPEG file");
-  return c2;
-}
-
-
-/*
- * Most types of marker are followed by a variable-length parameter segment.
- * This routine skips over the parameters for any marker we don't otherwise
- * want to process.
- * Note that we MUST skip the parameter segment explicitly in order not to
- * be fooled by 0xFF bytes that might appear within the parameter segment;
- * such bytes do NOT introduce new markers.
- */
-
-static void
-skip_variable (void)
-/* Skip over an unknown or uninteresting variable-length marker */
-{
-  unsigned int length;
-
-  /* Get the marker parameter length count */
-  length = read_2_bytes();
-  /* Length includes itself, so must be at least 2 */
-  if (length < 2)
-    ERREXIT("Erroneous JPEG marker length");
-  length -= 2;
-  /* Skip over the remaining bytes */
-  while (length > 0) {
-    (void) read_1_byte();
-    length--;
-  }
-}
-
-
-/*
- * Process a COM marker.
- * We want to print out the marker contents as legible text;
- * we must guard against non-text junk and varying newline representations.
- */
-
-static void
-process_COM (void)
-{
-  unsigned int length;
-  int ch;
-  int lastch = 0;
-
-  /* Get the marker parameter length count */
-  length = read_2_bytes();
-  /* Length includes itself, so must be at least 2 */
-  if (length < 2)
-    ERREXIT("Erroneous JPEG marker length");
-  length -= 2;
-
-  while (length > 0) {
-    ch = read_1_byte();
-    /* Emit the character in a readable form.
-     * Nonprintables are converted to \nnn form,
-     * while \ is converted to \\.
-     * Newlines in CR, CR/LF, or LF form will be printed as one newline.
-     */
-    if (ch == '\r') {
-      printf("\n");
-    } else if (ch == '\n') {
-      if (lastch != '\r')
-	printf("\n");
-    } else if (ch == '\\') {
-      printf("\\\\");
-    } else if (isprint(ch)) {
-      putc(ch, stdout);
-    } else {
-      printf("\\%03o", ch);
-    }
-    lastch = ch;
-    length--;
-  }
-  printf("\n");
-}
-
-
-/*
- * Process a SOFn marker.
- * This code is only needed if you want to know the image dimensions...
- */
-
-static void
-process_SOFn (int marker)
-{
-  unsigned int length;
-  unsigned int image_height, image_width;
-  int data_precision, num_components;
-  const char * process;
-  int ci;
-
-  length = read_2_bytes();	/* usual parameter length count */
-
-  data_precision = read_1_byte();
-  image_height = read_2_bytes();
-  image_width = read_2_bytes();
-  num_components = read_1_byte();
-
-  switch (marker) {
-  case M_SOF0:	process = "Baseline";  break;
-  case M_SOF1:	process = "Extended sequential";  break;
-  case M_SOF2:	process = "Progressive";  break;
-  case M_SOF3:	process = "Lossless";  break;
-  case M_SOF5:	process = "Differential sequential";  break;
-  case M_SOF6:	process = "Differential progressive";  break;
-  case M_SOF7:	process = "Differential lossless";  break;
-  case M_SOF9:	process = "Extended sequential, arithmetic coding";  break;
-  case M_SOF10:	process = "Progressive, arithmetic coding";  break;
-  case M_SOF11:	process = "Lossless, arithmetic coding";  break;
-  case M_SOF13:	process = "Differential sequential, arithmetic coding";  break;
-  case M_SOF14:	process = "Differential progressive, arithmetic coding"; break;
-  case M_SOF15:	process = "Differential lossless, arithmetic coding";  break;
-  default:	process = "Unknown";  break;
-  }
-
-  printf("JPEG image is %uw * %uh, %d color components, %d bits per sample\n",
-	 image_width, image_height, num_components, data_precision);
-  printf("JPEG process: %s\n", process);
-
-  if (length != (unsigned int) (8 + num_components * 3))
-    ERREXIT("Bogus SOF marker length");
-
-  for (ci = 0; ci < num_components; ci++) {
-    (void) read_1_byte();	/* Component ID code */
-    (void) read_1_byte();	/* H, V sampling factors */
-    (void) read_1_byte();	/* Quantization table number */
-  }
-}
-
-
-/*
- * Parse the marker stream until SOS or EOI is seen;
- * display any COM markers.
- * While the companion program wrjpgcom will always insert COM markers before
- * SOFn, other implementations might not, so we scan to SOS before stopping.
- * If we were only interested in the image dimensions, we would stop at SOFn.
- * (Conversely, if we only cared about COM markers, there would be no need
- * for special code to handle SOFn; we could treat it like other markers.)
- */
-
-static int
-scan_JPEG_header (int verbose)
-{
-  int marker;
-
-  /* Expect SOI at start of file */
-  if (first_marker() != M_SOI)
-    ERREXIT("Expected SOI marker first");
-
-  /* Scan miscellaneous markers until we reach SOS. */
-  for (;;) {
-    marker = next_marker();
-    switch (marker) {
-      /* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be,
-       * treated as SOFn.  C4 in particular is actually DHT.
-       */
-    case M_SOF0:		/* Baseline */
-    case M_SOF1:		/* Extended sequential, Huffman */
-    case M_SOF2:		/* Progressive, Huffman */
-    case M_SOF3:		/* Lossless, Huffman */
-    case M_SOF5:		/* Differential sequential, Huffman */
-    case M_SOF6:		/* Differential progressive, Huffman */
-    case M_SOF7:		/* Differential lossless, Huffman */
-    case M_SOF9:		/* Extended sequential, arithmetic */
-    case M_SOF10:		/* Progressive, arithmetic */
-    case M_SOF11:		/* Lossless, arithmetic */
-    case M_SOF13:		/* Differential sequential, arithmetic */
-    case M_SOF14:		/* Differential progressive, arithmetic */
-    case M_SOF15:		/* Differential lossless, arithmetic */
-      if (verbose)
-	process_SOFn(marker);
-      else
-	skip_variable();
-      break;
-
-    case M_SOS:			/* stop before hitting compressed data */
-      return marker;
-
-    case M_EOI:			/* in case it's a tables-only JPEG stream */
-      return marker;
-
-    case M_COM:
-      process_COM();
-      break;
-
-    case M_APP12:
-      /* Some digital camera makers put useful textual information into
-       * APP12 markers, so we print those out too when in -verbose mode.
-       */
-      if (verbose) {
-	printf("APP12 contains:\n");
-	process_COM();
-      } else
-	skip_variable();
-      break;
-
-    default:			/* Anything else just gets skipped */
-      skip_variable();		/* we assume it has a parameter count... */
-      break;
-    }
-  } /* end loop */
-}
-
-
-/* Command line parsing code */
-
-static const char * progname;	/* program name for error messages */
-
-
-static void
-usage (void)
-/* complain about bad command line */
-{
-  fprintf(stderr, "rdjpgcom displays any textual comments in a JPEG file.\n");
-
-  fprintf(stderr, "Usage: %s [switches] [inputfile]\n", progname);
-
-  fprintf(stderr, "Switches (names may be abbreviated):\n");
-  fprintf(stderr, "  -verbose    Also display dimensions of JPEG image\n");
-
-  exit(EXIT_FAILURE);
-}
-
-
-static int
-keymatch (char * arg, const char * keyword, int minchars)
-/* Case-insensitive matching of (possibly abbreviated) keyword switches. */
-/* keyword is the constant keyword (must be lower case already), */
-/* minchars is length of minimum legal abbreviation. */
-{
-  register int ca, ck;
-  register int nmatched = 0;
-
-  while ((ca = *arg++) != '\0') {
-    if ((ck = *keyword++) == '\0')
-      return 0;			/* arg longer than keyword, no good */
-    if (isupper(ca))		/* force arg to lcase (assume ck is already) */
-      ca = tolower(ca);
-    if (ca != ck)
-      return 0;			/* no good */
-    nmatched++;			/* count matched characters */
-  }
-  /* reached end of argument; fail if it's too short for unique abbrev */
-  if (nmatched < minchars)
-    return 0;
-  return 1;			/* A-OK */
-}
-
-
-/*
- * The main program.
- */
-
-int
-main (int argc, char **argv)
-{
-  int argn;
-  char * arg;
-  int verbose = 0;
-
-  /* On Mac, fetch a command line. */
-#ifdef USE_CCOMMAND
-  argc = ccommand(&argv);
-#endif
-
-  progname = argv[0];
-  if (progname == NULL || progname[0] == 0)
-    progname = "rdjpgcom";	/* in case C library doesn't provide it */
-
-  /* Parse switches, if any */
-  for (argn = 1; argn < argc; argn++) {
-    arg = argv[argn];
-    if (arg[0] != '-')
-      break;			/* not switch, must be file name */
-    arg++;			/* advance over '-' */
-    if (keymatch(arg, "verbose", 1)) {
-      verbose++;
-    } else
-      usage();
-  }
-
-  /* Open the input file. */
-  /* Unix style: expect zero or one file name */
-  if (argn < argc-1) {
-    fprintf(stderr, "%s: only one input file\n", progname);
-    usage();
-  }
-  if (argn < argc) {
-    if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) {
-      fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
-      exit(EXIT_FAILURE);
-    }
-  } else {
-    /* default input file is stdin */
-#ifdef USE_SETMODE		/* need to hack file mode? */
-    setmode(fileno(stdin), O_BINARY);
-#endif
-#ifdef USE_FDOPEN		/* need to re-open in binary mode? */
-    if ((infile = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
-      fprintf(stderr, "%s: can't open stdin\n", progname);
-      exit(EXIT_FAILURE);
-    }
-#else
-    infile = stdin;
-#endif
-  }
-
-  /* Scan the JPEG headers. */
-  (void) scan_JPEG_header(verbose);
-
-  /* All done. */
-  exit(EXIT_SUCCESS);
-  return 0;			/* suppress no-return-value warnings */
-}