Intermediate changes

commit_hash:79edafb911368bba0a4d2f7f151a6c8a37c349f3

1 files changed, 840 insertions, 0 deletions

diff --git a/contrib/libs/libjpeg-turbo/src/cjpeg.c b/contrib/libs/libjpeg-turbo/src/cjpeg.c
new file mode 100644
index 00000000000..22da5382e07
--- /dev/null
+++ b/contrib/libs/libjpeg-turbo/src/cjpeg.c
@@ -0,0 +1,840 @@
+/*
+ * cjpeg.c
+ *
+ * This file was part of the Independent JPEG Group's software:
+ * Copyright (C) 1991-1998, Thomas G. Lane.
+ * Modified 2003-2011 by Guido Vollbeding.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2010, 2013-2014, 2017, 2019-2022, 2024-2025,
+ *           D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
+ *
+ * This file contains a command-line user interface for the JPEG compressor.
+ * It should work on any system with Unix- or MS-DOS-style command lines.
+ *
+ * Two different command line styles are permitted, depending on the
+ * compile-time switch TWO_FILE_COMMANDLINE:
+ *      cjpeg [options]  inputfile outputfile
+ *      cjpeg [options]  [inputfile]
+ * In the second style, output is always to standard output, which you'd
+ * normally redirect to a file or pipe to some other program.  Input is
+ * either from a named file or from standard input (typically redirected).
+ * The second style is convenient on Unix but is unhelpful on systems that
+ * don't support pipes.  Also, you MUST use the first style if your system
+ * doesn't do binary I/O to stdin/stdout.
+ * To simplify script writing, the "-outfile" switch is provided.  The syntax
+ *      cjpeg [options]  -outfile outputfile  inputfile
+ * works regardless of which command line style is used.
+ */
+
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_DEPRECATE
+#endif
+
+#ifdef CJPEG_FUZZER
+#define JPEG_INTERNALS
+#endif
+#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "jversion.h"           /* for version message */
+#include "jconfigint.h"
+
+
+/* Create the add-on message string table. */
+
+#define JMESSAGE(code, string)  string,
+
+static const char * const cdjpeg_message_table[] = {
+#include "cderror.h"
+  NULL
+};
+
+
+/*
+ * This routine determines what format the input file is,
+ * and selects the appropriate input-reading module.
+ *
+ * To determine which family of input formats the file belongs to,
+ * we may look only at the first byte of the file, since C does not
+ * guarantee that more than one character can be pushed back with ungetc.
+ * Looking at additional bytes would require one of these approaches:
+ *     1) assume we can fseek() the input file (fails for piped input);
+ *     2) assume we can push back more than one character (works in
+ *        some C implementations, but unportable);
+ *     3) provide our own buffering (breaks input readers that want to use
+ *        stdio directly);
+ * or  4) don't put back the data, and modify the input_init methods to assume
+ *        they start reading after the start of file.
+ * #1 is attractive for MS-DOS but is untenable on Unix.
+ *
+ * The most portable solution for file types that can't be identified by their
+ * first byte is to make the user tell us what they are.  This is also the
+ * only approach for "raw" file types that contain only arbitrary values.
+ * We presently apply this method for Targa files.  Most of the time Targa
+ * files start with 0x00, so we recognize that case.  Potentially, however,
+ * a Targa file could start with any byte value (byte 0 is the length of the
+ * seldom-used ID field), so we provide a switch to force Targa input mode.
+ */
+
+static boolean is_targa;        /* records user -targa switch */
+
+
+LOCAL(cjpeg_source_ptr)
+select_file_type(j_compress_ptr cinfo, FILE *infile)
+{
+  int c;
+
+  if (is_targa) {
+#ifdef TARGA_SUPPORTED
+    return jinit_read_targa(cinfo);
+#else
+    ERREXIT(cinfo, JERR_TGA_NOTCOMP);
+#endif
+  }
+
+  if ((c = getc(infile)) == EOF)
+    ERREXIT(cinfo, JERR_INPUT_EMPTY);
+  if (ungetc(c, infile) == EOF)
+    ERREXIT(cinfo, JERR_UNGETC_FAILED);
+
+  switch (c) {
+#ifdef BMP_SUPPORTED
+  case 'B':
+    return jinit_read_bmp(cinfo, TRUE);
+#endif
+#ifdef GIF_SUPPORTED
+  case 'G':
+    return jinit_read_gif(cinfo);
+#endif
+#ifdef PPM_SUPPORTED
+  case 'P':
+    if (cinfo->data_precision <= 8)
+      return jinit_read_ppm(cinfo);
+    else if (cinfo->data_precision <= 12)
+      return j12init_read_ppm(cinfo);
+    else {
+#ifdef C_LOSSLESS_SUPPORTED
+      return j16init_read_ppm(cinfo);
+#else
+      ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
+      break;
+#endif
+    }
+#endif
+#ifdef TARGA_SUPPORTED
+  case 0x00:
+    return jinit_read_targa(cinfo);
+#endif
+  default:
+    ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
+    break;
+  }
+
+  return NULL;                  /* suppress compiler warnings */
+}
+
+
+/*
+ * Argument-parsing code.
+ * The switch parser is designed to be useful with DOS-style command line
+ * syntax, ie, intermixed switches and file names, where only the switches
+ * to the left of a given file name affect processing of that file.
+ * The main program in this file doesn't actually use this capability...
+ */
+
+
+static const char *progname;    /* program name for error messages */
+static char *icc_filename;      /* for -icc switch */
+static char *outfilename;       /* for -outfile switch */
+static boolean memdst;          /* for -memdst switch */
+static boolean report;          /* for -report switch */
+static boolean strict;          /* for -strict switch */
+
+
+#ifdef CJPEG_FUZZER
+
+#include <setjmp.h>
+
+struct my_error_mgr {
+  struct jpeg_error_mgr pub;
+  jmp_buf setjmp_buffer;
+};
+
+void my_error_exit(j_common_ptr cinfo)
+{
+  struct my_error_mgr *myerr = (struct my_error_mgr *)cinfo->err;
+
+  longjmp(myerr->setjmp_buffer, 1);
+}
+
+static void my_emit_message_fuzzer(j_common_ptr cinfo, int msg_level)
+{
+  if (msg_level < 0)
+    cinfo->err->num_warnings++;
+}
+
+#define HANDLE_ERROR() { \
+  if (cinfo.global_state > CSTATE_START) { \
+    if (memdst && outbuffer) \
+      (*cinfo.dest->term_destination) (&cinfo); \
+    jpeg_abort_compress(&cinfo); \
+  } \
+  jpeg_destroy_compress(&cinfo); \
+  if (input_file != stdin && input_file != NULL) \
+    fclose(input_file); \
+  if (memdst) \
+    free(outbuffer); \
+  free(icc_profile); \
+  return EXIT_FAILURE; \
+}
+
+#endif
+
+
+LOCAL(void)
+usage(void)
+/* complain about bad command line */
+{
+  fprintf(stderr, "usage: %s [switches] ", progname);
+#ifdef TWO_FILE_COMMANDLINE
+  fprintf(stderr, "inputfile outputfile\n");
+#else
+  fprintf(stderr, "[inputfile]\n");
+#endif
+
+  fprintf(stderr, "Switches (names may be abbreviated):\n");
+  fprintf(stderr, "  -quality N[,...]   Compression quality (0..100; 5-95 is most useful range,\n");
+  fprintf(stderr, "                     default is 75)\n");
+  fprintf(stderr, "  -grayscale     Create monochrome JPEG file\n");
+  fprintf(stderr, "  -rgb           Create RGB JPEG file\n");
+#ifdef ENTROPY_OPT_SUPPORTED
+  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression)\n");
+#endif
+#ifdef C_PROGRESSIVE_SUPPORTED
+  fprintf(stderr, "  -progressive   Create progressive JPEG file\n");
+#endif
+#ifdef TARGA_SUPPORTED
+  fprintf(stderr, "  -targa         Input file is Targa format (usually not needed)\n");
+#endif
+  fprintf(stderr, "Switches for advanced users:\n");
+  fprintf(stderr, "  -precision N   Create JPEG file with N-bit data precision\n");
+#ifdef C_LOSSLESS_SUPPORTED
+  fprintf(stderr, "                 (N=2..16; default is 8; if N is not 8 or 12, then -lossless\n");
+  fprintf(stderr, "                 must also be specified)\n");
+#else
+  fprintf(stderr, "                 (N is 8 or 12; default is 8)\n");
+#endif
+#ifdef C_LOSSLESS_SUPPORTED
+  fprintf(stderr, "  -lossless psv[,Pt]  Create lossless JPEG file\n");
+#endif
+#ifdef C_ARITH_CODING_SUPPORTED
+  fprintf(stderr, "  -arithmetic    Use arithmetic coding\n");
+#endif
+#ifdef DCT_ISLOW_SUPPORTED
+  fprintf(stderr, "  -dct int       Use accurate integer DCT method%s\n",
+          (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
+#endif
+#ifdef DCT_IFAST_SUPPORTED
+  fprintf(stderr, "  -dct fast      Use less accurate integer DCT method [legacy feature]%s\n",
+          (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
+#endif
+#ifdef DCT_FLOAT_SUPPORTED
+  fprintf(stderr, "  -dct float     Use floating-point DCT method [legacy feature]%s\n",
+          (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
+#endif
+  fprintf(stderr, "  -icc FILE      Embed ICC profile contained in FILE\n");
+  fprintf(stderr, "  -restart N     Set restart interval in rows, or in blocks with B\n");
+#ifdef INPUT_SMOOTHING_SUPPORTED
+  fprintf(stderr, "  -smooth N      Smooth dithered input (N=1..100 is strength)\n");
+#endif
+  fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
+  fprintf(stderr, "  -outfile name  Specify name for output file\n");
+  fprintf(stderr, "  -memdst        Compress to memory instead of file (useful for benchmarking)\n");
+  fprintf(stderr, "  -report        Report compression progress\n");
+  fprintf(stderr, "  -strict        Treat all warnings as fatal\n");
+  fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
+  fprintf(stderr, "  -version       Print version information and exit\n");
+  fprintf(stderr, "Switches for wizards:\n");
+  fprintf(stderr, "  -baseline      Force baseline quantization tables\n");
+  fprintf(stderr, "  -qtables FILE  Use quantization tables given in FILE\n");
+  fprintf(stderr, "  -qslots N[,...]    Set component quantization tables\n");
+  fprintf(stderr, "  -sample HxV[,...]  Set component sampling factors\n");
+#ifdef C_MULTISCAN_FILES_SUPPORTED
+  fprintf(stderr, "  -scans FILE    Create multi-scan JPEG per script FILE\n");
+#endif
+  exit(EXIT_FAILURE);
+}
+
+
+LOCAL(int)
+parse_switches(j_compress_ptr cinfo, int argc, char **argv,
+               int last_file_arg_seen, boolean for_real)
+/* Parse optional switches.
+ * Returns argv[] index of first file-name argument (== argc if none).
+ * Any file names with indexes <= last_file_arg_seen are ignored;
+ * they have presumably been processed in a previous iteration.
+ * (Pass 0 for last_file_arg_seen on the first or only iteration.)
+ * for_real is FALSE on the first (dummy) pass; we may skip any expensive
+ * processing.
+ */
+{
+  int argn;
+  char *arg;
+#ifdef C_LOSSLESS_SUPPORTED
+  int psv = 0, pt = 0;
+#endif
+  boolean force_baseline;
+  boolean simple_progressive;
+  char *qualityarg = NULL;      /* saves -quality parm if any */
+  char *qtablefile = NULL;      /* saves -qtables filename if any */
+  char *qslotsarg = NULL;       /* saves -qslots parm if any */
+  char *samplearg = NULL;       /* saves -sample parm if any */
+  char *scansarg = NULL;        /* saves -scans parm if any */
+
+  /* Set up default JPEG parameters. */
+
+  force_baseline = FALSE;       /* by default, allow 16-bit quantizers */
+  simple_progressive = FALSE;
+  is_targa = FALSE;
+  icc_filename = NULL;
+  outfilename = NULL;
+  memdst = FALSE;
+  report = FALSE;
+  strict = FALSE;
+  cinfo->err->trace_level = 0;
+
+  /* Scan command line options, adjust parameters */
+
+  for (argn = 1; argn < argc; argn++) {
+    arg = argv[argn];
+    if (*arg != '-') {
+      /* Not a switch, must be a file name argument */
+      if (argn <= last_file_arg_seen) {
+        outfilename = NULL;     /* -outfile applies to just one input file */
+        continue;               /* ignore this name if previously processed */
+      }
+      break;                    /* else done parsing switches */
+    }
+    arg++;                      /* advance past switch marker character */
+
+    if (keymatch(arg, "arithmetic", 1)) {
+      /* Use arithmetic coding. */
+#ifdef C_ARITH_CODING_SUPPORTED
+      cinfo->arith_code = TRUE;
+#else
+      fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
+              progname);
+      exit(EXIT_FAILURE);
+#endif
+
+    } else if (keymatch(arg, "baseline", 1)) {
+      /* Force baseline-compatible output (8-bit quantizer values). */
+      force_baseline = TRUE;
+
+    } else if (keymatch(arg, "dct", 2)) {
+      /* Select DCT algorithm. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (keymatch(argv[argn], "int", 1)) {
+        cinfo->dct_method = JDCT_ISLOW;
+      } else if (keymatch(argv[argn], "fast", 2)) {
+        cinfo->dct_method = JDCT_IFAST;
+      } else if (keymatch(argv[argn], "float", 2)) {
+        cinfo->dct_method = JDCT_FLOAT;
+      } else
+        usage();
+
+    } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
+      /* Enable debug printouts. */
+      /* On first -d, print version identification */
+      static boolean printed_version = FALSE;
+
+      if (!printed_version) {
+        fprintf(stderr, "%s version %s (build %s)\n",
+                PACKAGE_NAME, VERSION, BUILD);
+        fprintf(stderr, JCOPYRIGHT1);
+        fprintf(stderr, JCOPYRIGHT2 "\n");
+        fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
+                JVERSION);
+        printed_version = TRUE;
+      }
+      cinfo->err->trace_level++;
+
+    } else if (keymatch(arg, "version", 4)) {
+      fprintf(stderr, "%s version %s (build %s)\n",
+              PACKAGE_NAME, VERSION, BUILD);
+      exit(EXIT_SUCCESS);
+
+    } else if (keymatch(arg, "grayscale", 2) ||
+               keymatch(arg, "greyscale", 2)) {
+      /* Force a monochrome JPEG file to be generated. */
+      jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
+
+    } else if (keymatch(arg, "rgb", 3)) {
+      /* Force an RGB JPEG file to be generated. */
+      jpeg_set_colorspace(cinfo, JCS_RGB);
+
+    } else if (keymatch(arg, "icc", 1)) {
+      /* Set ICC filename. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      icc_filename = argv[argn];
+
+    } else if (keymatch(arg, "lossless", 1)) {
+      /* Enable lossless mode. */
+#ifdef C_LOSSLESS_SUPPORTED
+      char ch = ',', *ptr;
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%d%c", &psv, &ch) < 1 || ch != ',')
+        usage();
+      ptr = argv[argn];
+      while (*ptr && *ptr++ != ','); /* advance to next segment of arg
+                                        string */
+      if (*ptr)
+        sscanf(ptr, "%d", &pt);
+
+      /* We must postpone execution until data_precision is known. */
+#else
+      fprintf(stderr, "%s: sorry, lossless output was not compiled\n",
+              progname);
+      exit(EXIT_FAILURE);
+#endif
+
+    } else if (keymatch(arg, "maxmemory", 3)) {
+      /* Maximum memory in Kb (or Mb with 'm'). */
+      long lval;
+      char ch = 'x';
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
+        usage();
+      if (ch == 'm' || ch == 'M')
+        lval *= 1000L;
+      cinfo->mem->max_memory_to_use = lval * 1000L;
+
+    } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
+      /* Enable entropy parm optimization. */
+#ifdef ENTROPY_OPT_SUPPORTED
+      cinfo->optimize_coding = TRUE;
+#else
+      fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n",
+              progname);
+      exit(EXIT_FAILURE);
+#endif
+
+    } else if (keymatch(arg, "outfile", 4)) {
+      /* Set output file name. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      outfilename = argv[argn]; /* save it away for later use */
+
+    } else if (keymatch(arg, "precision", 3)) {
+      /* Set data precision. */
+      int val;
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%d", &val) != 1)
+        usage();
+#ifdef C_LOSSLESS_SUPPORTED
+      if (val < 2 || val > 16)
+#else
+      if (val != 8 && val != 12)
+#endif
+        usage();
+      cinfo->data_precision = val;
+
+    } else if (keymatch(arg, "progressive", 1)) {
+      /* Select simple progressive mode. */
+#ifdef C_PROGRESSIVE_SUPPORTED
+      simple_progressive = TRUE;
+      /* We must postpone execution until num_components is known. */
+#else
+      fprintf(stderr, "%s: sorry, progressive output was not compiled in\n",
+              progname);
+      exit(EXIT_FAILURE);
+#endif
+
+    } else if (keymatch(arg, "memdst", 2)) {
+      /* Use in-memory destination manager */
+      memdst = TRUE;
+
+    } else if (keymatch(arg, "quality", 1)) {
+      /* Quality ratings (quantization table scaling factors). */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      qualityarg = argv[argn];
+
+    } else if (keymatch(arg, "qslots", 2)) {
+      /* Quantization table slot numbers. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      qslotsarg = argv[argn];
+      /* Must delay setting qslots until after we have processed any
+       * colorspace-determining switches, since jpeg_set_colorspace sets
+       * default quant table numbers.
+       */
+
+    } else if (keymatch(arg, "qtables", 2)) {
+      /* Quantization tables fetched from file. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      qtablefile = argv[argn];
+      /* We postpone actually reading the file in case -quality comes later. */
+
+    } else if (keymatch(arg, "report", 3)) {
+      report = TRUE;
+
+    } else if (keymatch(arg, "restart", 1)) {
+      /* Restart interval in MCU rows (or in MCUs with 'b'). */
+      long lval;
+      char ch = 'x';
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
+        usage();
+      if (lval < 0 || lval > 65535L)
+        usage();
+      if (ch == 'b' || ch == 'B') {
+        cinfo->restart_interval = (unsigned int)lval;
+        cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
+      } else {
+        cinfo->restart_in_rows = (int)lval;
+        /* restart_interval will be computed during startup */
+      }
+
+    } else if (keymatch(arg, "sample", 2)) {
+      /* Set sampling factors. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      samplearg = argv[argn];
+      /* Must delay setting sample factors until after we have processed any
+       * colorspace-determining switches, since jpeg_set_colorspace sets
+       * default sampling factors.
+       */
+
+    } else if (keymatch(arg, "scans", 2)) {
+      /* Set scan script. */
+#ifdef C_MULTISCAN_FILES_SUPPORTED
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      scansarg = argv[argn];
+      /* We must postpone reading the file in case -progressive appears. */
+#else
+      fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n",
+              progname);
+      exit(EXIT_FAILURE);
+#endif
+
+    } else if (keymatch(arg, "smooth", 2)) {
+      /* Set input smoothing factor. */
+      int val;
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%d", &val) != 1)
+        usage();
+      if (val < 0 || val > 100)
+        usage();
+      cinfo->smoothing_factor = val;
+
+    } else if (keymatch(arg, "strict", 2)) {
+      strict = TRUE;
+
+    } else if (keymatch(arg, "targa", 1)) {
+      /* Input file is Targa format. */
+      is_targa = TRUE;
+
+    } else {
+      usage();                  /* bogus switch */
+    }
+  }
+
+  /* Post-switch-scanning cleanup */
+
+  if (for_real) {
+
+    /* Set quantization tables for selected quality. */
+    /* Some or all may be overridden if -qtables is present. */
+    if (qualityarg != NULL)     /* process -quality if it was present */
+      if (!set_quality_ratings(cinfo, qualityarg, force_baseline))
+        usage();
+
+    if (qtablefile != NULL)     /* process -qtables if it was present */
+      if (!read_quant_tables(cinfo, qtablefile, force_baseline))
+        usage();
+
+    if (qslotsarg != NULL)      /* process -qslots if it was present */
+      if (!set_quant_slots(cinfo, qslotsarg))
+        usage();
+
+    if (samplearg != NULL)      /* process -sample if it was present */
+      if (!set_sample_factors(cinfo, samplearg))
+        usage();
+
+#ifdef C_PROGRESSIVE_SUPPORTED
+    if (simple_progressive)     /* process -progressive; -scans can override */
+      jpeg_simple_progression(cinfo);
+#endif
+
+#ifdef C_LOSSLESS_SUPPORTED
+    if (psv != 0)               /* process -lossless */
+      jpeg_enable_lossless(cinfo, psv, pt);
+#endif
+
+#ifdef C_MULTISCAN_FILES_SUPPORTED
+    if (scansarg != NULL)       /* process -scans if it was present */
+      if (!read_scan_script(cinfo, scansarg))
+        usage();
+#endif
+  }
+
+  return argn;                  /* return index of next arg (file name) */
+}
+
+
+METHODDEF(void)
+my_emit_message(j_common_ptr cinfo, int msg_level)
+{
+  if (msg_level < 0) {
+    /* Treat warning as fatal */
+    cinfo->err->error_exit(cinfo);
+  } else {
+    if (cinfo->err->trace_level >= msg_level)
+      cinfo->err->output_message(cinfo);
+  }
+}
+
+
+/*
+ * The main program.
+ */
+
+int
+main(int argc, char **argv)
+{
+  struct jpeg_compress_struct cinfo;
+#ifdef CJPEG_FUZZER
+  struct my_error_mgr myerr;
+  struct jpeg_error_mgr &jerr = myerr.pub;
+#else
+  struct jpeg_error_mgr jerr;
+#endif
+  struct cdjpeg_progress_mgr progress;
+  int file_index;
+  cjpeg_source_ptr src_mgr;
+  FILE *input_file = NULL;
+  FILE *icc_file;
+  JOCTET *icc_profile = NULL;
+  long icc_len = 0;
+  FILE *output_file = NULL;
+  unsigned char *outbuffer = NULL;
+  unsigned long outsize = 0;
+  JDIMENSION num_scanlines;
+
+  progname = argv[0];
+  if (progname == NULL || progname[0] == 0)
+    progname = "cjpeg";         /* in case C library doesn't provide it */
+
+  /* Initialize the JPEG compression object with default error handling. */
+  cinfo.err = jpeg_std_error(&jerr);
+  jpeg_create_compress(&cinfo);
+  /* Add some application-specific error messages (from cderror.h) */
+  jerr.addon_message_table = cdjpeg_message_table;
+  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
+  jerr.last_addon_message = JMSG_LASTADDONCODE;
+
+  /* Initialize JPEG parameters.
+   * Much of this may be overridden later.
+   * In particular, we don't yet know the input file's color space,
+   * but we need to provide some value for jpeg_set_defaults() to work.
+   */
+
+  cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
+  jpeg_set_defaults(&cinfo);
+
+  /* Scan command line to find file names.
+   * It is convenient to use just one switch-parsing routine, but the switch
+   * values read here are ignored; we will rescan the switches after opening
+   * the input file.
+   */
+
+  file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
+
+  if (strict)
+    jerr.emit_message = my_emit_message;
+
+#ifdef TWO_FILE_COMMANDLINE
+  if (!memdst) {
+    /* Must have either -outfile switch or explicit output file name */
+    if (outfilename == NULL) {
+      if (file_index != argc - 2) {
+        fprintf(stderr, "%s: must name one input and one output file\n",
+                progname);
+        usage();
+      }
+      outfilename = argv[file_index + 1];
+    } else {
+      if (file_index != argc - 1) {
+        fprintf(stderr, "%s: must name one input and one output file\n",
+                progname);
+        usage();
+      }
+    }
+  }
+#else
+  /* Unix style: expect zero or one file name */
+  if (file_index < argc - 1) {
+    fprintf(stderr, "%s: only one input file\n", progname);
+    usage();
+  }
+#endif /* TWO_FILE_COMMANDLINE */
+
+  /* Open the input file. */
+  if (file_index < argc) {
+    if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
+      fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
+      exit(EXIT_FAILURE);
+    }
+  } else {
+    /* default input file is stdin */
+    input_file = read_stdin();
+  }
+
+  /* Open the output file. */
+  if (outfilename != NULL) {
+    if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
+      fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
+      exit(EXIT_FAILURE);
+    }
+  } else if (!memdst) {
+    /* default output file is stdout */
+    output_file = write_stdout();
+  }
+
+  if (icc_filename != NULL) {
+    if ((icc_file = fopen(icc_filename, READ_BINARY)) == NULL) {
+      fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
+      exit(EXIT_FAILURE);
+    }
+    if (fseek(icc_file, 0, SEEK_END) < 0 ||
+        (icc_len = ftell(icc_file)) < 1 ||
+        fseek(icc_file, 0, SEEK_SET) < 0) {
+      fprintf(stderr, "%s: can't determine size of %s\n", progname,
+              icc_filename);
+      exit(EXIT_FAILURE);
+    }
+    if ((icc_profile = (JOCTET *)malloc(icc_len)) == NULL) {
+      fprintf(stderr, "%s: can't allocate memory for ICC profile\n", progname);
+      fclose(icc_file);
+      exit(EXIT_FAILURE);
+    }
+    if (fread(icc_profile, icc_len, 1, icc_file) < 1) {
+      fprintf(stderr, "%s: can't read ICC profile from %s\n", progname,
+              icc_filename);
+      free(icc_profile);
+      fclose(icc_file);
+      exit(EXIT_FAILURE);
+    }
+    fclose(icc_file);
+  }
+
+#ifdef CJPEG_FUZZER
+  jerr.error_exit = my_error_exit;
+  jerr.emit_message = my_emit_message_fuzzer;
+  if (setjmp(myerr.setjmp_buffer))
+    HANDLE_ERROR()
+#endif
+
+  if (report) {
+    start_progress_monitor((j_common_ptr)&cinfo, &progress);
+    progress.report = report;
+  }
+
+  /* Figure out the input file format, and set up to read it. */
+  src_mgr = select_file_type(&cinfo, input_file);
+  src_mgr->input_file = input_file;
+#ifdef CJPEG_FUZZER
+  src_mgr->max_pixels = 1048576;
+#endif
+
+  /* Read the input file header to obtain file size & colorspace. */
+  (*src_mgr->start_input) (&cinfo, src_mgr);
+
+  /* Now that we know input colorspace, fix colorspace-dependent defaults */
+  jpeg_default_colorspace(&cinfo);
+
+  /* Adjust default compression parameters by re-parsing the options */
+  file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
+
+  /* Specify data destination for compression */
+  if (memdst)
+    jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
+  else
+    jpeg_stdio_dest(&cinfo, output_file);
+
+#ifdef CJPEG_FUZZER
+  if (setjmp(myerr.setjmp_buffer))
+    HANDLE_ERROR()
+#endif
+
+  /* Start compressor */
+  jpeg_start_compress(&cinfo, TRUE);
+
+  if (icc_profile != NULL)
+    jpeg_write_icc_profile(&cinfo, icc_profile, (unsigned int)icc_len);
+
+  /* Process data */
+  if (cinfo.data_precision <= 8) {
+    while (cinfo.next_scanline < cinfo.image_height) {
+      num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
+      (void)jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
+    }
+  } else if (cinfo.data_precision <= 12) {
+    while (cinfo.next_scanline < cinfo.image_height) {
+      num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
+      (void)jpeg12_write_scanlines(&cinfo, src_mgr->buffer12, num_scanlines);
+    }
+  } else {
+#ifdef C_LOSSLESS_SUPPORTED
+    while (cinfo.next_scanline < cinfo.image_height) {
+      num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
+      (void)jpeg16_write_scanlines(&cinfo, src_mgr->buffer16, num_scanlines);
+    }
+#else
+    ERREXIT1(&cinfo, JERR_BAD_PRECISION, cinfo.data_precision);
+#endif
+  }
+
+  /* Finish compression and release memory */
+  (*src_mgr->finish_input) (&cinfo, src_mgr);
+  jpeg_finish_compress(&cinfo);
+  jpeg_destroy_compress(&cinfo);
+
+  /* Close files, if we opened them */
+  if (input_file != stdin)
+    fclose(input_file);
+  if (output_file != stdout && output_file != NULL)
+    fclose(output_file);
+
+  if (report)
+    end_progress_monitor((j_common_ptr)&cinfo);
+
+  if (memdst) {
+#ifndef CJPEG_FUZZER
+    fprintf(stderr, "Compressed size:  %lu bytes\n", outsize);
+#endif
+    free(outbuffer);
+  }
+
+  free(icc_profile);
+
+  /* All done. */
+  return (jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
+}