| /* |
| * 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. |
| * libjpeg-turbo Modifications: |
| * Copyright (C) 2010, 2013-2014, 2017, 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. |
| */ |
| |
| #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ |
| #include "jversion.h" /* for version message */ |
| #include "jconfigint.h" |
| |
| #ifndef HAVE_STDLIB_H /* <stdlib.h> should declare malloc(),free() */ |
| extern void *malloc(size_t size); |
| extern void free(void *ptr); |
| #endif |
| |
| #ifdef USE_CCOMMAND /* command-line reader for Macintosh */ |
| #ifdef __MWERKS__ |
| #include <SIOUX.h> /* Metrowerks needs this */ |
| #include <console.h> /* ... and this */ |
| #endif |
| #ifdef THINK_C |
| #include <console.h> /* Think declares it here */ |
| #endif |
| #endif |
| |
| |
| /* 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, such as the RLE library); |
| * or 4) don't put back the data, and modify the input_init methods to assume |
| * they start reading after the start of file (also breaks RLE library). |
| * #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': |
| return jinit_read_ppm(cinfo); |
| #endif |
| #ifdef RLE_SUPPORTED |
| case 'R': |
| return jinit_read_rle(cinfo); |
| #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 */ |
| boolean memdst; /* for -memdst switch */ |
| |
| |
| 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"); |
| #ifdef C_ARITH_CODING_SUPPORTED |
| fprintf(stderr, " -arithmetic Use arithmetic coding\n"); |
| #endif |
| #ifdef DCT_ISLOW_SUPPORTED |
| fprintf(stderr, " -dct int Use integer DCT method%s\n", |
| (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); |
| #endif |
| #ifdef DCT_IFAST_SUPPORTED |
| fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", |
| (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); |
| #endif |
| #ifdef DCT_FLOAT_SUPPORTED |
| fprintf(stderr, " -dct float Use floating-point DCT method%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"); |
| #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED) |
| fprintf(stderr, " -memdst Compress to memory instead of file (useful for benchmarking)\n"); |
| #endif |
| 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; |
| 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; |
| 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, "%s\n\n", JCOPYRIGHT); |
| 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, "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, "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 */ |
| #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED) |
| memdst = TRUE; |
| #else |
| fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n", |
| progname); |
| exit(EXIT_FAILURE); |
| #endif |
| |
| } 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, "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", 4)) { |
| /* 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, "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_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) */ |
| } |
| |
| |
| /* |
| * The main program. |
| */ |
| |
| int |
| main(int argc, char **argv) |
| { |
| struct jpeg_compress_struct cinfo; |
| struct jpeg_error_mgr jerr; |
| #ifdef PROGRESS_REPORT |
| struct cdjpeg_progress_mgr progress; |
| #endif |
| int file_index; |
| cjpeg_source_ptr src_mgr; |
| FILE *input_file; |
| 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; |
| |
| /* On Mac, fetch a command line. */ |
| #ifdef USE_CCOMMAND |
| argc = ccommand(&argv); |
| #endif |
| |
| 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); |
| |
| #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 PROGRESS_REPORT |
| start_progress_monitor((j_common_ptr)&cinfo, &progress); |
| #endif |
| |
| /* 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; |
| |
| /* 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 JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED) |
| if (memdst) |
| jpeg_mem_dest(&cinfo, &outbuffer, &outsize); |
| else |
| #endif |
| jpeg_stdio_dest(&cinfo, output_file); |
| |
| /* Start compressor */ |
| jpeg_start_compress(&cinfo, TRUE); |
| |
| if (icc_profile != NULL) |
| jpeg_write_icc_profile(&cinfo, icc_profile, (unsigned int)icc_len); |
| |
| /* Process data */ |
| 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); |
| } |
| |
| /* 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); |
| |
| #ifdef PROGRESS_REPORT |
| end_progress_monitor((j_common_ptr)&cinfo); |
| #endif |
| |
| if (memdst) { |
| fprintf(stderr, "Compressed size: %lu bytes\n", outsize); |
| if (outbuffer != NULL) |
| free(outbuffer); |
| } |
| |
| if (icc_profile != NULL) |
| free(icc_profile); |
| |
| /* All done. */ |
| exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); |
| return 0; /* suppress no-return-value warnings */ |
| } |
