1 /* 2 * cjpeg.c 3 * 4 * This file was part of the Independent JPEG Group's software: 5 * Copyright (C) 1991-1998, Thomas G. Lane. 6 * Modified 2003-2011 by Guido Vollbeding. 7 * libjpeg-turbo Modifications: 8 * Copyright (C) 2010, 2013-2014, 2017, D. R. Commander. 9 * For conditions of distribution and use, see the accompanying README.ijg 10 * file. 11 * 12 * This file contains a command-line user interface for the JPEG compressor. 13 * It should work on any system with Unix- or MS-DOS-style command lines. 14 * 15 * Two different command line styles are permitted, depending on the 16 * compile-time switch TWO_FILE_COMMANDLINE: 17 * cjpeg [options] inputfile outputfile 18 * cjpeg [options] [inputfile] 19 * In the second style, output is always to standard output, which you'd 20 * normally redirect to a file or pipe to some other program. Input is 21 * either from a named file or from standard input (typically redirected). 22 * The second style is convenient on Unix but is unhelpful on systems that 23 * don't support pipes. Also, you MUST use the first style if your system 24 * doesn't do binary I/O to stdin/stdout. 25 * To simplify script writing, the "-outfile" switch is provided. The syntax 26 * cjpeg [options] -outfile outputfile inputfile 27 * works regardless of which command line style is used. 28 */ 29 30 #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ 31 #include "jversion.h" /* for version message */ 32 #include "jconfigint.h" 33 34 #ifdef USE_CCOMMAND /* command-line reader for Macintosh */ 35 #ifdef __MWERKS__ 36 #include <SIOUX.h> /* Metrowerks needs this */ 37 #include <console.h> /* ... and this */ 38 #endif 39 #ifdef THINK_C 40 #include <console.h> /* Think declares it here */ 41 #endif 42 #endif 43 44 45 /* Create the add-on message string table. */ 46 47 #define JMESSAGE(code,string) string , 48 49 static const char * const cdjpeg_message_table[] = { 50 #include "cderror.h" 51 NULL 52 }; 53 54 55 /* 56 * This routine determines what format the input file is, 57 * and selects the appropriate input-reading module. 58 * 59 * To determine which family of input formats the file belongs to, 60 * we may look only at the first byte of the file, since C does not 61 * guarantee that more than one character can be pushed back with ungetc. 62 * Looking at additional bytes would require one of these approaches: 63 * 1) assume we can fseek() the input file (fails for piped input); 64 * 2) assume we can push back more than one character (works in 65 * some C implementations, but unportable); 66 * 3) provide our own buffering (breaks input readers that want to use 67 * stdio directly, such as the RLE library); 68 * or 4) don't put back the data, and modify the input_init methods to assume 69 * they start reading after the start of file (also breaks RLE library). 70 * #1 is attractive for MS-DOS but is untenable on Unix. 71 * 72 * The most portable solution for file types that can't be identified by their 73 * first byte is to make the user tell us what they are. This is also the 74 * only approach for "raw" file types that contain only arbitrary values. 75 * We presently apply this method for Targa files. Most of the time Targa 76 * files start with 0x00, so we recognize that case. Potentially, however, 77 * a Targa file could start with any byte value (byte 0 is the length of the 78 * seldom-used ID field), so we provide a switch to force Targa input mode. 79 */ 80 81 static boolean is_targa; /* records user -targa switch */ 82 83 84 LOCAL(cjpeg_source_ptr) 85 select_file_type (j_compress_ptr cinfo, FILE *infile) 86 { 87 int c; 88 89 if (is_targa) { 90 #ifdef TARGA_SUPPORTED 91 return jinit_read_targa(cinfo); 92 #else 93 ERREXIT(cinfo, JERR_TGA_NOTCOMP); 94 #endif 95 } 96 97 if ((c = getc(infile)) == EOF) 98 ERREXIT(cinfo, JERR_INPUT_EMPTY); 99 if (ungetc(c, infile) == EOF) 100 ERREXIT(cinfo, JERR_UNGETC_FAILED); 101 102 switch (c) { 103 #ifdef BMP_SUPPORTED 104 case 'B': 105 return jinit_read_bmp(cinfo); 106 #endif 107 #ifdef GIF_SUPPORTED 108 case 'G': 109 return jinit_read_gif(cinfo); 110 #endif 111 #ifdef PPM_SUPPORTED 112 case 'P': 113 return jinit_read_ppm(cinfo); 114 #endif 115 #ifdef RLE_SUPPORTED 116 case 'R': 117 return jinit_read_rle(cinfo); 118 #endif 119 #ifdef TARGA_SUPPORTED 120 case 0x00: 121 return jinit_read_targa(cinfo); 122 #endif 123 default: 124 ERREXIT(cinfo, JERR_UNKNOWN_FORMAT); 125 break; 126 } 127 128 return NULL; /* suppress compiler warnings */ 129 } 130 131 132 /* 133 * Argument-parsing code. 134 * The switch parser is designed to be useful with DOS-style command line 135 * syntax, ie, intermixed switches and file names, where only the switches 136 * to the left of a given file name affect processing of that file. 137 * The main program in this file doesn't actually use this capability... 138 */ 139 140 141 static const char *progname; /* program name for error messages */ 142 static char *outfilename; /* for -outfile switch */ 143 boolean memdst; /* for -memdst switch */ 144 145 146 LOCAL(void) 147 usage (void) 148 /* complain about bad command line */ 149 { 150 fprintf(stderr, "usage: %s [switches] ", progname); 151 #ifdef TWO_FILE_COMMANDLINE 152 fprintf(stderr, "inputfile outputfile\n"); 153 #else 154 fprintf(stderr, "[inputfile]\n"); 155 #endif 156 157 fprintf(stderr, "Switches (names may be abbreviated):\n"); 158 fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is most useful range,\n"); 159 fprintf(stderr, " default is 75)\n"); 160 fprintf(stderr, " -grayscale Create monochrome JPEG file\n"); 161 fprintf(stderr, " -rgb Create RGB JPEG file\n"); 162 #ifdef ENTROPY_OPT_SUPPORTED 163 fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n"); 164 #endif 165 #ifdef C_PROGRESSIVE_SUPPORTED 166 fprintf(stderr, " -progressive Create progressive JPEG file\n"); 167 #endif 168 #ifdef TARGA_SUPPORTED 169 fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n"); 170 #endif 171 fprintf(stderr, "Switches for advanced users:\n"); 172 #ifdef C_ARITH_CODING_SUPPORTED 173 fprintf(stderr, " -arithmetic Use arithmetic coding\n"); 174 #endif 175 #ifdef DCT_ISLOW_SUPPORTED 176 fprintf(stderr, " -dct int Use integer DCT method%s\n", 177 (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); 178 #endif 179 #ifdef DCT_IFAST_SUPPORTED 180 fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", 181 (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); 182 #endif 183 #ifdef DCT_FLOAT_SUPPORTED 184 fprintf(stderr, " -dct float Use floating-point DCT method%s\n", 185 (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); 186 #endif 187 fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n"); 188 #ifdef INPUT_SMOOTHING_SUPPORTED 189 fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n"); 190 #endif 191 fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); 192 fprintf(stderr, " -outfile name Specify name for output file\n"); 193 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED) 194 fprintf(stderr, " -memdst Compress to memory instead of file (useful for benchmarking)\n"); 195 #endif 196 fprintf(stderr, " -verbose or -debug Emit debug output\n"); 197 fprintf(stderr, " -version Print version information and exit\n"); 198 fprintf(stderr, "Switches for wizards:\n"); 199 fprintf(stderr, " -baseline Force baseline quantization tables\n"); 200 fprintf(stderr, " -qtables FILE Use quantization tables given in FILE\n"); 201 fprintf(stderr, " -qslots N[,...] Set component quantization tables\n"); 202 fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n"); 203 #ifdef C_MULTISCAN_FILES_SUPPORTED 204 fprintf(stderr, " -scans FILE Create multi-scan JPEG per script FILE\n"); 205 #endif 206 exit(EXIT_FAILURE); 207 } 208 209 210 LOCAL(int) 211 parse_switches (j_compress_ptr cinfo, int argc, char **argv, 212 int last_file_arg_seen, boolean for_real) 213 /* Parse optional switches. 214 * Returns argv[] index of first file-name argument (== argc if none). 215 * Any file names with indexes <= last_file_arg_seen are ignored; 216 * they have presumably been processed in a previous iteration. 217 * (Pass 0 for last_file_arg_seen on the first or only iteration.) 218 * for_real is FALSE on the first (dummy) pass; we may skip any expensive 219 * processing. 220 */ 221 { 222 int argn; 223 char *arg; 224 boolean force_baseline; 225 boolean simple_progressive; 226 char *qualityarg = NULL; /* saves -quality parm if any */ 227 char *qtablefile = NULL; /* saves -qtables filename if any */ 228 char *qslotsarg = NULL; /* saves -qslots parm if any */ 229 char *samplearg = NULL; /* saves -sample parm if any */ 230 char *scansarg = NULL; /* saves -scans parm if any */ 231 232 /* Set up default JPEG parameters. */ 233 234 force_baseline = FALSE; /* by default, allow 16-bit quantizers */ 235 simple_progressive = FALSE; 236 is_targa = FALSE; 237 outfilename = NULL; 238 memdst = FALSE; 239 cinfo->err->trace_level = 0; 240 241 /* Scan command line options, adjust parameters */ 242 243 for (argn = 1; argn < argc; argn++) { 244 arg = argv[argn]; 245 if (*arg != '-') { 246 /* Not a switch, must be a file name argument */ 247 if (argn <= last_file_arg_seen) { 248 outfilename = NULL; /* -outfile applies to just one input file */ 249 continue; /* ignore this name if previously processed */ 250 } 251 break; /* else done parsing switches */ 252 } 253 arg++; /* advance past switch marker character */ 254 255 if (keymatch(arg, "arithmetic", 1)) { 256 /* Use arithmetic coding. */ 257 #ifdef C_ARITH_CODING_SUPPORTED 258 cinfo->arith_code = TRUE; 259 #else 260 fprintf(stderr, "%s: sorry, arithmetic coding not supported\n", 261 progname); 262 exit(EXIT_FAILURE); 263 #endif 264 265 } else if (keymatch(arg, "baseline", 1)) { 266 /* Force baseline-compatible output (8-bit quantizer values). */ 267 force_baseline = TRUE; 268 269 } else if (keymatch(arg, "dct", 2)) { 270 /* Select DCT algorithm. */ 271 if (++argn >= argc) /* advance to next argument */ 272 usage(); 273 if (keymatch(argv[argn], "int", 1)) { 274 cinfo->dct_method = JDCT_ISLOW; 275 } else if (keymatch(argv[argn], "fast", 2)) { 276 cinfo->dct_method = JDCT_IFAST; 277 } else if (keymatch(argv[argn], "float", 2)) { 278 cinfo->dct_method = JDCT_FLOAT; 279 } else 280 usage(); 281 282 } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { 283 /* Enable debug printouts. */ 284 /* On first -d, print version identification */ 285 static boolean printed_version = FALSE; 286 287 if (! printed_version) { 288 fprintf(stderr, "%s version %s (build %s)\n", 289 PACKAGE_NAME, VERSION, BUILD); 290 fprintf(stderr, "%s\n\n", JCOPYRIGHT); 291 fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n", 292 JVERSION); 293 printed_version = TRUE; 294 } 295 cinfo->err->trace_level++; 296 297 } else if (keymatch(arg, "version", 4)) { 298 fprintf(stderr, "%s version %s (build %s)\n", 299 PACKAGE_NAME, VERSION, BUILD); 300 exit(EXIT_SUCCESS); 301 302 } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { 303 /* Force a monochrome JPEG file to be generated. */ 304 jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); 305 306 } else if (keymatch(arg, "rgb", 3)) { 307 /* Force an RGB JPEG file to be generated. */ 308 jpeg_set_colorspace(cinfo, JCS_RGB); 309 310 } else if (keymatch(arg, "maxmemory", 3)) { 311 /* Maximum memory in Kb (or Mb with 'm'). */ 312 long lval; 313 char ch = 'x'; 314 315 if (++argn >= argc) /* advance to next argument */ 316 usage(); 317 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) 318 usage(); 319 if (ch == 'm' || ch == 'M') 320 lval *= 1000L; 321 cinfo->mem->max_memory_to_use = lval * 1000L; 322 323 } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) { 324 /* Enable entropy parm optimization. */ 325 #ifdef ENTROPY_OPT_SUPPORTED 326 cinfo->optimize_coding = TRUE; 327 #else 328 fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n", 329 progname); 330 exit(EXIT_FAILURE); 331 #endif 332 333 } else if (keymatch(arg, "outfile", 4)) { 334 /* Set output file name. */ 335 if (++argn >= argc) /* advance to next argument */ 336 usage(); 337 outfilename = argv[argn]; /* save it away for later use */ 338 339 } else if (keymatch(arg, "progressive", 1)) { 340 /* Select simple progressive mode. */ 341 #ifdef C_PROGRESSIVE_SUPPORTED 342 simple_progressive = TRUE; 343 /* We must postpone execution until num_components is known. */ 344 #else 345 fprintf(stderr, "%s: sorry, progressive output was not compiled in\n", 346 progname); 347 exit(EXIT_FAILURE); 348 #endif 349 350 } else if (keymatch(arg, "memdst", 2)) { 351 /* Use in-memory destination manager */ 352 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED) 353 memdst = TRUE; 354 #else 355 fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n", 356 progname); 357 exit(EXIT_FAILURE); 358 #endif 359 360 } else if (keymatch(arg, "quality", 1)) { 361 /* Quality ratings (quantization table scaling factors). */ 362 if (++argn >= argc) /* advance to next argument */ 363 usage(); 364 qualityarg = argv[argn]; 365 366 } else if (keymatch(arg, "qslots", 2)) { 367 /* Quantization table slot numbers. */ 368 if (++argn >= argc) /* advance to next argument */ 369 usage(); 370 qslotsarg = argv[argn]; 371 /* Must delay setting qslots until after we have processed any 372 * colorspace-determining switches, since jpeg_set_colorspace sets 373 * default quant table numbers. 374 */ 375 376 } else if (keymatch(arg, "qtables", 2)) { 377 /* Quantization tables fetched from file. */ 378 if (++argn >= argc) /* advance to next argument */ 379 usage(); 380 qtablefile = argv[argn]; 381 /* We postpone actually reading the file in case -quality comes later. */ 382 383 } else if (keymatch(arg, "restart", 1)) { 384 /* Restart interval in MCU rows (or in MCUs with 'b'). */ 385 long lval; 386 char ch = 'x'; 387 388 if (++argn >= argc) /* advance to next argument */ 389 usage(); 390 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) 391 usage(); 392 if (lval < 0 || lval > 65535L) 393 usage(); 394 if (ch == 'b' || ch == 'B') { 395 cinfo->restart_interval = (unsigned int) lval; 396 cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */ 397 } else { 398 cinfo->restart_in_rows = (int) lval; 399 /* restart_interval will be computed during startup */ 400 } 401 402 } else if (keymatch(arg, "sample", 2)) { 403 /* Set sampling factors. */ 404 if (++argn >= argc) /* advance to next argument */ 405 usage(); 406 samplearg = argv[argn]; 407 /* Must delay setting sample factors until after we have processed any 408 * colorspace-determining switches, since jpeg_set_colorspace sets 409 * default sampling factors. 410 */ 411 412 } else if (keymatch(arg, "scans", 4)) { 413 /* Set scan script. */ 414 #ifdef C_MULTISCAN_FILES_SUPPORTED 415 if (++argn >= argc) /* advance to next argument */ 416 usage(); 417 scansarg = argv[argn]; 418 /* We must postpone reading the file in case -progressive appears. */ 419 #else 420 fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n", 421 progname); 422 exit(EXIT_FAILURE); 423 #endif 424 425 } else if (keymatch(arg, "smooth", 2)) { 426 /* Set input smoothing factor. */ 427 int val; 428 429 if (++argn >= argc) /* advance to next argument */ 430 usage(); 431 if (sscanf(argv[argn], "%d", &val) != 1) 432 usage(); 433 if (val < 0 || val > 100) 434 usage(); 435 cinfo->smoothing_factor = val; 436 437 } else if (keymatch(arg, "targa", 1)) { 438 /* Input file is Targa format. */ 439 is_targa = TRUE; 440 441 } else { 442 usage(); /* bogus switch */ 443 } 444 } 445 446 /* Post-switch-scanning cleanup */ 447 448 if (for_real) { 449 450 /* Set quantization tables for selected quality. */ 451 /* Some or all may be overridden if -qtables is present. */ 452 if (qualityarg != NULL) /* process -quality if it was present */ 453 if (! set_quality_ratings(cinfo, qualityarg, force_baseline)) 454 usage(); 455 456 if (qtablefile != NULL) /* process -qtables if it was present */ 457 if (! read_quant_tables(cinfo, qtablefile, force_baseline)) 458 usage(); 459 460 if (qslotsarg != NULL) /* process -qslots if it was present */ 461 if (! set_quant_slots(cinfo, qslotsarg)) 462 usage(); 463 464 if (samplearg != NULL) /* process -sample if it was present */ 465 if (! set_sample_factors(cinfo, samplearg)) 466 usage(); 467 468 #ifdef C_PROGRESSIVE_SUPPORTED 469 if (simple_progressive) /* process -progressive; -scans can override */ 470 jpeg_simple_progression(cinfo); 471 #endif 472 473 #ifdef C_MULTISCAN_FILES_SUPPORTED 474 if (scansarg != NULL) /* process -scans if it was present */ 475 if (! read_scan_script(cinfo, scansarg)) 476 usage(); 477 #endif 478 } 479 480 return argn; /* return index of next arg (file name) */ 481 } 482 483 484 /* 485 * The main program. 486 */ 487 488 int 489 main (int argc, char **argv) 490 { 491 struct jpeg_compress_struct cinfo; 492 struct jpeg_error_mgr jerr; 493 #ifdef PROGRESS_REPORT 494 struct cdjpeg_progress_mgr progress; 495 #endif 496 int file_index; 497 cjpeg_source_ptr src_mgr; 498 FILE *input_file; 499 FILE *output_file = NULL; 500 unsigned char *outbuffer = NULL; 501 unsigned long outsize = 0; 502 JDIMENSION num_scanlines; 503 504 /* On Mac, fetch a command line. */ 505 #ifdef USE_CCOMMAND 506 argc = ccommand(&argv); 507 #endif 508 509 progname = argv[0]; 510 if (progname == NULL || progname[0] == 0) 511 progname = "cjpeg"; /* in case C library doesn't provide it */ 512 513 /* Initialize the JPEG compression object with default error handling. */ 514 cinfo.err = jpeg_std_error(&jerr); 515 jpeg_create_compress(&cinfo); 516 /* Add some application-specific error messages (from cderror.h) */ 517 jerr.addon_message_table = cdjpeg_message_table; 518 jerr.first_addon_message = JMSG_FIRSTADDONCODE; 519 jerr.last_addon_message = JMSG_LASTADDONCODE; 520 521 /* Initialize JPEG parameters. 522 * Much of this may be overridden later. 523 * In particular, we don't yet know the input file's color space, 524 * but we need to provide some value for jpeg_set_defaults() to work. 525 */ 526 527 cinfo.in_color_space = JCS_RGB; /* arbitrary guess */ 528 jpeg_set_defaults(&cinfo); 529 530 /* Scan command line to find file names. 531 * It is convenient to use just one switch-parsing routine, but the switch 532 * values read here are ignored; we will rescan the switches after opening 533 * the input file. 534 */ 535 536 file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); 537 538 #ifdef TWO_FILE_COMMANDLINE 539 if (!memdst) { 540 /* Must have either -outfile switch or explicit output file name */ 541 if (outfilename == NULL) { 542 if (file_index != argc-2) { 543 fprintf(stderr, "%s: must name one input and one output file\n", 544 progname); 545 usage(); 546 } 547 outfilename = argv[file_index+1]; 548 } else { 549 if (file_index != argc-1) { 550 fprintf(stderr, "%s: must name one input and one output file\n", 551 progname); 552 usage(); 553 } 554 } 555 } 556 #else 557 /* Unix style: expect zero or one file name */ 558 if (file_index < argc-1) { 559 fprintf(stderr, "%s: only one input file\n", progname); 560 usage(); 561 } 562 #endif /* TWO_FILE_COMMANDLINE */ 563 564 /* Open the input file. */ 565 if (file_index < argc) { 566 if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { 567 fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); 568 exit(EXIT_FAILURE); 569 } 570 } else { 571 /* default input file is stdin */ 572 input_file = read_stdin(); 573 } 574 575 /* Open the output file. */ 576 if (outfilename != NULL) { 577 if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { 578 fprintf(stderr, "%s: can't open %s\n", progname, outfilename); 579 exit(EXIT_FAILURE); 580 } 581 } else if (!memdst) { 582 /* default output file is stdout */ 583 output_file = write_stdout(); 584 } 585 586 #ifdef PROGRESS_REPORT 587 start_progress_monitor((j_common_ptr) &cinfo, &progress); 588 #endif 589 590 /* Figure out the input file format, and set up to read it. */ 591 src_mgr = select_file_type(&cinfo, input_file); 592 src_mgr->input_file = input_file; 593 594 /* Read the input file header to obtain file size & colorspace. */ 595 (*src_mgr->start_input) (&cinfo, src_mgr); 596 597 /* Now that we know input colorspace, fix colorspace-dependent defaults */ 598 jpeg_default_colorspace(&cinfo); 599 600 /* Adjust default compression parameters by re-parsing the options */ 601 file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); 602 603 /* Specify data destination for compression */ 604 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED) 605 if (memdst) 606 jpeg_mem_dest(&cinfo, &outbuffer, &outsize); 607 else 608 #endif 609 jpeg_stdio_dest(&cinfo, output_file); 610 611 /* Start compressor */ 612 jpeg_start_compress(&cinfo, TRUE); 613 614 /* Process data */ 615 while (cinfo.next_scanline < cinfo.image_height) { 616 num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr); 617 (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines); 618 } 619 620 /* Finish compression and release memory */ 621 (*src_mgr->finish_input) (&cinfo, src_mgr); 622 jpeg_finish_compress(&cinfo); 623 jpeg_destroy_compress(&cinfo); 624 625 /* Close files, if we opened them */ 626 if (input_file != stdin) 627 fclose(input_file); 628 if (output_file != stdout && output_file != NULL) 629 fclose(output_file); 630 631 #ifdef PROGRESS_REPORT 632 end_progress_monitor((j_common_ptr) &cinfo); 633 #endif 634 635 if (memdst) { 636 fprintf(stderr, "Compressed size: %lu bytes\n", outsize); 637 if (outbuffer != NULL) 638 free(outbuffer); 639 } 640 641 /* All done. */ 642 exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); 643 return 0; /* suppress no-return-value warnings */ 644 } 645
