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