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      1 /*
      2  * djpeg.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 a command-line user interface for the JPEG decompressor.
      9  * It should work on any system with Unix- or MS-DOS-style command lines.
     10  *
     11  * Two different command line styles are permitted, depending on the
     12  * compile-time switch TWO_FILE_COMMANDLINE:
     13  *	djpeg [options]  inputfile outputfile
     14  *	djpeg [options]  [inputfile]
     15  * In the second style, output is always to standard output, which you'd
     16  * normally redirect to a file or pipe to some other program.  Input is
     17  * either from a named file or from standard input (typically redirected).
     18  * The second style is convenient on Unix but is unhelpful on systems that
     19  * don't support pipes.  Also, you MUST use the first style if your system
     20  * doesn't do binary I/O to stdin/stdout.
     21  * To simplify script writing, the "-outfile" switch is provided.  The syntax
     22  *	djpeg [options]  -outfile outputfile  inputfile
     23  * works regardless of which command line style is used.
     24  */
     25 
     26 #include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
     27 #include "jversion.h"		/* for version message */
     28 
     29 #include <ctype.h>		/* to declare isprint() */
     30 
     31 #ifdef USE_CCOMMAND		/* command-line reader for Macintosh */
     32 #ifdef __MWERKS__
     33 #include <SIOUX.h>              /* Metrowerks needs this */
     34 #include <console.h>		/* ... and this */
     35 #endif
     36 #ifdef THINK_C
     37 #include <console.h>		/* Think declares it here */
     38 #endif
     39 #endif
     40 
     41 
     42 /* Create the add-on message string table. */
     43 
     44 #define JMESSAGE(code,string)	string ,
     45 
     46 static const char * const cdjpeg_message_table[] = {
     47 #include "cderror.h"
     48   NULL
     49 };
     50 
     51 
     52 /*
     53  * This list defines the known output image formats
     54  * (not all of which need be supported by a given version).
     55  * You can change the default output format by defining DEFAULT_FMT;
     56  * indeed, you had better do so if you undefine PPM_SUPPORTED.
     57  */
     58 
     59 typedef enum {
     60 	FMT_BMP,		/* BMP format (Windows flavor) */
     61 	FMT_GIF,		/* GIF format */
     62 	FMT_OS2,		/* BMP format (OS/2 flavor) */
     63 	FMT_PPM,		/* PPM/PGM (PBMPLUS formats) */
     64 	FMT_RLE,		/* RLE format */
     65 	FMT_TARGA,		/* Targa format */
     66 	FMT_TIFF		/* TIFF format */
     67 } IMAGE_FORMATS;
     68 
     69 #ifndef DEFAULT_FMT		/* so can override from CFLAGS in Makefile */
     70 #define DEFAULT_FMT	FMT_PPM
     71 #endif
     72 
     73 static IMAGE_FORMATS requested_fmt;
     74 
     75 
     76 /*
     77  * Argument-parsing code.
     78  * The switch parser is designed to be useful with DOS-style command line
     79  * syntax, ie, intermixed switches and file names, where only the switches
     80  * to the left of a given file name affect processing of that file.
     81  * The main program in this file doesn't actually use this capability...
     82  */
     83 
     84 
     85 static const char * progname;	/* program name for error messages */
     86 static char * outfilename;	/* for -outfile switch */
     87 
     88 
     89 LOCAL(void)
     90 usage (void)
     91 /* complain about bad command line */
     92 {
     93   fprintf(stderr, "usage: %s [switches] ", progname);
     94 #ifdef TWO_FILE_COMMANDLINE
     95   fprintf(stderr, "inputfile outputfile\n");
     96 #else
     97   fprintf(stderr, "[inputfile]\n");
     98 #endif
     99 
    100   fprintf(stderr, "Switches (names may be abbreviated):\n");
    101   fprintf(stderr, "  -colors N      Reduce image to no more than N colors\n");
    102   fprintf(stderr, "  -fast          Fast, low-quality processing\n");
    103   fprintf(stderr, "  -grayscale     Force grayscale output\n");
    104 #ifdef IDCT_SCALING_SUPPORTED
    105   fprintf(stderr, "  -scale M/N     Scale output image by fraction M/N, eg, 1/8\n");
    106 #endif
    107 #ifdef BMP_SUPPORTED
    108   fprintf(stderr, "  -bmp           Select BMP output format (Windows style)%s\n",
    109 	  (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
    110 #endif
    111 #ifdef GIF_SUPPORTED
    112   fprintf(stderr, "  -gif           Select GIF output format%s\n",
    113 	  (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
    114 #endif
    115 #ifdef BMP_SUPPORTED
    116   fprintf(stderr, "  -os2           Select BMP output format (OS/2 style)%s\n",
    117 	  (DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
    118 #endif
    119 #ifdef PPM_SUPPORTED
    120   fprintf(stderr, "  -pnm           Select PBMPLUS (PPM/PGM) output format%s\n",
    121 	  (DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
    122 #endif
    123 #ifdef RLE_SUPPORTED
    124   fprintf(stderr, "  -rle           Select Utah RLE output format%s\n",
    125 	  (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
    126 #endif
    127 #ifdef TARGA_SUPPORTED
    128   fprintf(stderr, "  -targa         Select Targa output format%s\n",
    129 	  (DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
    130 #endif
    131   fprintf(stderr, "Switches for advanced users:\n");
    132 #ifdef DCT_ISLOW_SUPPORTED
    133   fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
    134 	  (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
    135 #endif
    136 #ifdef DCT_IFAST_SUPPORTED
    137   fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
    138 	  (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
    139 #endif
    140 #ifdef DCT_FLOAT_SUPPORTED
    141   fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
    142 	  (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
    143 #endif
    144   fprintf(stderr, "  -dither fs     Use F-S dithering (default)\n");
    145   fprintf(stderr, "  -dither none   Don't use dithering in quantization\n");
    146   fprintf(stderr, "  -dither ordered  Use ordered dither (medium speed, quality)\n");
    147 #ifdef QUANT_2PASS_SUPPORTED
    148   fprintf(stderr, "  -map FILE      Map to colors used in named image file\n");
    149 #endif
    150   fprintf(stderr, "  -nosmooth      Don't use high-quality upsampling\n");
    151 #ifdef QUANT_1PASS_SUPPORTED
    152   fprintf(stderr, "  -onepass       Use 1-pass quantization (fast, low quality)\n");
    153 #endif
    154   fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
    155   fprintf(stderr, "  -outfile name  Specify name for output file\n");
    156   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
    157   exit(EXIT_FAILURE);
    158 }
    159 
    160 
    161 LOCAL(int)
    162 parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
    163 		int last_file_arg_seen, boolean for_real)
    164 /* Parse optional switches.
    165  * Returns argv[] index of first file-name argument (== argc if none).
    166  * Any file names with indexes <= last_file_arg_seen are ignored;
    167  * they have presumably been processed in a previous iteration.
    168  * (Pass 0 for last_file_arg_seen on the first or only iteration.)
    169  * for_real is FALSE on the first (dummy) pass; we may skip any expensive
    170  * processing.
    171  */
    172 {
    173   int argn;
    174   char * arg;
    175 
    176   /* Set up default JPEG parameters. */
    177   requested_fmt = DEFAULT_FMT;	/* set default output file format */
    178   outfilename = NULL;
    179   cinfo->err->trace_level = 0;
    180 
    181   /* Scan command line options, adjust parameters */
    182 
    183   for (argn = 1; argn < argc; argn++) {
    184     arg = argv[argn];
    185     if (*arg != '-') {
    186       /* Not a switch, must be a file name argument */
    187       if (argn <= last_file_arg_seen) {
    188 	outfilename = NULL;	/* -outfile applies to just one input file */
    189 	continue;		/* ignore this name if previously processed */
    190       }
    191       break;			/* else done parsing switches */
    192     }
    193     arg++;			/* advance past switch marker character */
    194 
    195     if (keymatch(arg, "bmp", 1)) {
    196       /* BMP output format. */
    197       requested_fmt = FMT_BMP;
    198 
    199     } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
    200 	       keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
    201       /* Do color quantization. */
    202       int val;
    203 
    204       if (++argn >= argc)	/* advance to next argument */
    205 	usage();
    206       if (sscanf(argv[argn], "%d", &val) != 1)
    207 	usage();
    208       cinfo->desired_number_of_colors = val;
    209       cinfo->quantize_colors = TRUE;
    210 
    211     } else if (keymatch(arg, "dct", 2)) {
    212       /* Select IDCT algorithm. */
    213       if (++argn >= argc)	/* advance to next argument */
    214 	usage();
    215       if (keymatch(argv[argn], "int", 1)) {
    216 	cinfo->dct_method = JDCT_ISLOW;
    217       } else if (keymatch(argv[argn], "fast", 2)) {
    218 	cinfo->dct_method = JDCT_IFAST;
    219       } else if (keymatch(argv[argn], "float", 2)) {
    220 	cinfo->dct_method = JDCT_FLOAT;
    221       } else
    222 	usage();
    223 
    224     } else if (keymatch(arg, "dither", 2)) {
    225       /* Select dithering algorithm. */
    226       if (++argn >= argc)	/* advance to next argument */
    227 	usage();
    228       if (keymatch(argv[argn], "fs", 2)) {
    229 	cinfo->dither_mode = JDITHER_FS;
    230       } else if (keymatch(argv[argn], "none", 2)) {
    231 	cinfo->dither_mode = JDITHER_NONE;
    232       } else if (keymatch(argv[argn], "ordered", 2)) {
    233 	cinfo->dither_mode = JDITHER_ORDERED;
    234       } else
    235 	usage();
    236 
    237     } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
    238       /* Enable debug printouts. */
    239       /* On first -d, print version identification */
    240       static boolean printed_version = FALSE;
    241 
    242       if (! printed_version) {
    243 	fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
    244 		JVERSION, JCOPYRIGHT);
    245 	printed_version = TRUE;
    246       }
    247       cinfo->err->trace_level++;
    248 
    249     } else if (keymatch(arg, "fast", 1)) {
    250       /* Select recommended processing options for quick-and-dirty output. */
    251       cinfo->two_pass_quantize = FALSE;
    252       cinfo->dither_mode = JDITHER_ORDERED;
    253       if (! cinfo->quantize_colors) /* don't override an earlier -colors */
    254 	cinfo->desired_number_of_colors = 216;
    255       cinfo->dct_method = JDCT_FASTEST;
    256       cinfo->do_fancy_upsampling = FALSE;
    257 
    258     } else if (keymatch(arg, "gif", 1)) {
    259       /* GIF output format. */
    260       requested_fmt = FMT_GIF;
    261 
    262     } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
    263       /* Force monochrome output. */
    264       cinfo->out_color_space = JCS_GRAYSCALE;
    265 
    266     } else if (keymatch(arg, "map", 3)) {
    267       /* Quantize to a color map taken from an input file. */
    268       if (++argn >= argc)	/* advance to next argument */
    269 	usage();
    270       if (for_real) {		/* too expensive to do twice! */
    271 #ifdef QUANT_2PASS_SUPPORTED	/* otherwise can't quantize to supplied map */
    272 	FILE * mapfile;
    273 
    274 	if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
    275 	  fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
    276 	  exit(EXIT_FAILURE);
    277 	}
    278 	read_color_map(cinfo, mapfile);
    279 	fclose(mapfile);
    280 	cinfo->quantize_colors = TRUE;
    281 #else
    282 	ERREXIT(cinfo, JERR_NOT_COMPILED);
    283 #endif
    284       }
    285 
    286     } else if (keymatch(arg, "maxmemory", 3)) {
    287       /* Maximum memory in Kb (or Mb with 'm'). */
    288       long lval;
    289       char ch = 'x';
    290 
    291       if (++argn >= argc)	/* advance to next argument */
    292 	usage();
    293       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
    294 	usage();
    295       if (ch == 'm' || ch == 'M')
    296 	lval *= 1000L;
    297       cinfo->mem->max_memory_to_use = lval * 1000L;
    298 
    299     } else if (keymatch(arg, "nosmooth", 3)) {
    300       /* Suppress fancy upsampling */
    301       cinfo->do_fancy_upsampling = FALSE;
    302 
    303     } else if (keymatch(arg, "onepass", 3)) {
    304       /* Use fast one-pass quantization. */
    305       cinfo->two_pass_quantize = FALSE;
    306 
    307     } else if (keymatch(arg, "os2", 3)) {
    308       /* BMP output format (OS/2 flavor). */
    309       requested_fmt = FMT_OS2;
    310 
    311     } else if (keymatch(arg, "outfile", 4)) {
    312       /* Set output file name. */
    313       if (++argn >= argc)	/* advance to next argument */
    314 	usage();
    315       outfilename = argv[argn];	/* save it away for later use */
    316 
    317     } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
    318       /* PPM/PGM output format. */
    319       requested_fmt = FMT_PPM;
    320 
    321     } else if (keymatch(arg, "rle", 1)) {
    322       /* RLE output format. */
    323       requested_fmt = FMT_RLE;
    324 
    325     } else if (keymatch(arg, "scale", 1)) {
    326       /* Scale the output image by a fraction M/N. */
    327       if (++argn >= argc)	/* advance to next argument */
    328 	usage();
    329       if (sscanf(argv[argn], "%d/%d",
    330 		 &cinfo->scale_num, &cinfo->scale_denom) != 2)
    331 	usage();
    332 
    333     } else if (keymatch(arg, "targa", 1)) {
    334       /* Targa output format. */
    335       requested_fmt = FMT_TARGA;
    336 
    337     } else {
    338       usage();			/* bogus switch */
    339     }
    340   }
    341 
    342   return argn;			/* return index of next arg (file name) */
    343 }
    344 
    345 
    346 /*
    347  * Marker processor for COM and interesting APPn markers.
    348  * This replaces the library's built-in processor, which just skips the marker.
    349  * We want to print out the marker as text, to the extent possible.
    350  * Note this code relies on a non-suspending data source.
    351  */
    352 
    353 LOCAL(unsigned int)
    354 jpeg_getc (j_decompress_ptr cinfo)
    355 /* Read next byte */
    356 {
    357   struct jpeg_source_mgr * datasrc = cinfo->src;
    358 
    359   if (datasrc->bytes_in_buffer == 0) {
    360     if (! (*datasrc->fill_input_buffer) (cinfo))
    361       ERREXIT(cinfo, JERR_CANT_SUSPEND);
    362   }
    363   datasrc->bytes_in_buffer--;
    364   return GETJOCTET(*datasrc->next_input_byte++);
    365 }
    366 
    367 
    368 METHODDEF(boolean)
    369 print_text_marker (j_decompress_ptr cinfo)
    370 {
    371   boolean traceit = (cinfo->err->trace_level >= 1);
    372   INT32 length;
    373   unsigned int ch;
    374   unsigned int lastch = 0;
    375 
    376   length = jpeg_getc(cinfo) << 8;
    377   length += jpeg_getc(cinfo);
    378   length -= 2;			/* discount the length word itself */
    379 
    380   if (traceit) {
    381     if (cinfo->unread_marker == JPEG_COM)
    382       fprintf(stderr, "Comment, length %ld:\n", (long) length);
    383     else			/* assume it is an APPn otherwise */
    384       fprintf(stderr, "APP%d, length %ld:\n",
    385 	      cinfo->unread_marker - JPEG_APP0, (long) length);
    386   }
    387 
    388   while (--length >= 0) {
    389     ch = jpeg_getc(cinfo);
    390     if (traceit) {
    391       /* Emit the character in a readable form.
    392        * Nonprintables are converted to \nnn form,
    393        * while \ is converted to \\.
    394        * Newlines in CR, CR/LF, or LF form will be printed as one newline.
    395        */
    396       if (ch == '\r') {
    397 	fprintf(stderr, "\n");
    398       } else if (ch == '\n') {
    399 	if (lastch != '\r')
    400 	  fprintf(stderr, "\n");
    401       } else if (ch == '\\') {
    402 	fprintf(stderr, "\\\\");
    403       } else if (isprint(ch)) {
    404 	putc(ch, stderr);
    405       } else {
    406 	fprintf(stderr, "\\%03o", ch);
    407       }
    408       lastch = ch;
    409     }
    410   }
    411 
    412   if (traceit)
    413     fprintf(stderr, "\n");
    414 
    415   return TRUE;
    416 }
    417 
    418 
    419 /*
    420  * The main program.
    421  */
    422 
    423 int
    424 main (int argc, char **argv)
    425 {
    426   struct jpeg_decompress_struct cinfo;
    427   struct jpeg_error_mgr jerr;
    428 #ifdef PROGRESS_REPORT
    429   struct cdjpeg_progress_mgr progress;
    430 #endif
    431   int file_index;
    432   djpeg_dest_ptr dest_mgr = NULL;
    433   FILE * input_file;
    434   FILE * output_file;
    435   JDIMENSION num_scanlines;
    436 
    437   /* On Mac, fetch a command line. */
    438 #ifdef USE_CCOMMAND
    439   argc = ccommand(&argv);
    440 #endif
    441 
    442   progname = argv[0];
    443   if (progname == NULL || progname[0] == 0)
    444     progname = "djpeg";		/* in case C library doesn't provide it */
    445 
    446   /* Initialize the JPEG decompression object with default error handling. */
    447   cinfo.err = jpeg_std_error(&jerr);
    448   jpeg_create_decompress(&cinfo);
    449   /* Add some application-specific error messages (from cderror.h) */
    450   jerr.addon_message_table = cdjpeg_message_table;
    451   jerr.first_addon_message = JMSG_FIRSTADDONCODE;
    452   jerr.last_addon_message = JMSG_LASTADDONCODE;
    453 
    454   /* Insert custom marker processor for COM and APP12.
    455    * APP12 is used by some digital camera makers for textual info,
    456    * so we provide the ability to display it as text.
    457    * If you like, additional APPn marker types can be selected for display,
    458    * but don't try to override APP0 or APP14 this way (see libjpeg.doc).
    459    */
    460   jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
    461   jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
    462 
    463   /* Now safe to enable signal catcher. */
    464 #ifdef NEED_SIGNAL_CATCHER
    465   enable_signal_catcher((j_common_ptr) &cinfo);
    466 #endif
    467 
    468   /* Scan command line to find file names. */
    469   /* It is convenient to use just one switch-parsing routine, but the switch
    470    * values read here are ignored; we will rescan the switches after opening
    471    * the input file.
    472    * (Exception: tracing level set here controls verbosity for COM markers
    473    * found during jpeg_read_header...)
    474    */
    475 
    476   file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
    477 
    478 #ifdef TWO_FILE_COMMANDLINE
    479   /* Must have either -outfile switch or explicit output file name */
    480   if (outfilename == NULL) {
    481     if (file_index != argc-2) {
    482       fprintf(stderr, "%s: must name one input and one output file\n",
    483 	      progname);
    484       usage();
    485     }
    486     outfilename = argv[file_index+1];
    487   } else {
    488     if (file_index != argc-1) {
    489       fprintf(stderr, "%s: must name one input and one output file\n",
    490 	      progname);
    491       usage();
    492     }
    493   }
    494 #else
    495   /* Unix style: expect zero or one file name */
    496   if (file_index < argc-1) {
    497     fprintf(stderr, "%s: only one input file\n", progname);
    498     usage();
    499   }
    500 #endif /* TWO_FILE_COMMANDLINE */
    501 
    502   /* Open the input file. */
    503   if (file_index < argc) {
    504     if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
    505       fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
    506       exit(EXIT_FAILURE);
    507     }
    508   } else {
    509     /* default input file is stdin */
    510     input_file = read_stdin();
    511   }
    512 
    513   /* Open the output file. */
    514   if (outfilename != NULL) {
    515     if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
    516       fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
    517       exit(EXIT_FAILURE);
    518     }
    519   } else {
    520     /* default output file is stdout */
    521     output_file = write_stdout();
    522   }
    523 
    524 #ifdef PROGRESS_REPORT
    525   start_progress_monitor((j_common_ptr) &cinfo, &progress);
    526 #endif
    527 
    528   /* Specify data source for decompression */
    529   jpeg_stdio_src(&cinfo, input_file);
    530 
    531   /* Read file header, set default decompression parameters */
    532   (void) jpeg_read_header(&cinfo, TRUE);
    533 
    534   /* Adjust default decompression parameters by re-parsing the options */
    535   file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
    536 
    537   /* Initialize the output module now to let it override any crucial
    538    * option settings (for instance, GIF wants to force color quantization).
    539    */
    540   switch (requested_fmt) {
    541 #ifdef BMP_SUPPORTED
    542   case FMT_BMP:
    543     dest_mgr = jinit_write_bmp(&cinfo, FALSE);
    544     break;
    545   case FMT_OS2:
    546     dest_mgr = jinit_write_bmp(&cinfo, TRUE);
    547     break;
    548 #endif
    549 #ifdef GIF_SUPPORTED
    550   case FMT_GIF:
    551     dest_mgr = jinit_write_gif(&cinfo);
    552     break;
    553 #endif
    554 #ifdef PPM_SUPPORTED
    555   case FMT_PPM:
    556     dest_mgr = jinit_write_ppm(&cinfo);
    557     break;
    558 #endif
    559 #ifdef RLE_SUPPORTED
    560   case FMT_RLE:
    561     dest_mgr = jinit_write_rle(&cinfo);
    562     break;
    563 #endif
    564 #ifdef TARGA_SUPPORTED
    565   case FMT_TARGA:
    566     dest_mgr = jinit_write_targa(&cinfo);
    567     break;
    568 #endif
    569   default:
    570     ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
    571     break;
    572   }
    573   dest_mgr->output_file = output_file;
    574 
    575   /* Start decompressor */
    576   (void) jpeg_start_decompress(&cinfo);
    577 
    578   /* Write output file header */
    579   (*dest_mgr->start_output) (&cinfo, dest_mgr);
    580 
    581   /* Process data */
    582   while (cinfo.output_scanline < cinfo.output_height) {
    583     num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
    584 					dest_mgr->buffer_height);
    585     (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
    586   }
    587 
    588 #ifdef PROGRESS_REPORT
    589   /* Hack: count final pass as done in case finish_output does an extra pass.
    590    * The library won't have updated completed_passes.
    591    */
    592   progress.pub.completed_passes = progress.pub.total_passes;
    593 #endif
    594 
    595   /* Finish decompression and release memory.
    596    * I must do it in this order because output module has allocated memory
    597    * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
    598    */
    599   (*dest_mgr->finish_output) (&cinfo, dest_mgr);
    600   (void) jpeg_finish_decompress(&cinfo);
    601   jpeg_destroy_decompress(&cinfo);
    602 
    603   /* Close files, if we opened them */
    604   if (input_file != stdin)
    605     fclose(input_file);
    606   if (output_file != stdout)
    607     fclose(output_file);
    608 
    609 #ifdef PROGRESS_REPORT
    610   end_progress_monitor((j_common_ptr) &cinfo);
    611 #endif
    612 
    613   /* All done. */
    614   exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
    615   return 0;			/* suppress no-return-value warnings */
    616 }
    617