diff options
Diffstat (limited to 'rdjpgcom.c')
| -rw-r--r-- | rdjpgcom.c | 164 |
1 files changed, 82 insertions, 82 deletions
@@ -12,45 +12,45 @@ * JPEG markers. */ -#define JPEG_CJPEG_DJPEG /* to get the command-line config symbols */ -#include "jinclude.h" /* get auto-config symbols, <stdio.h> */ +#define JPEG_CJPEG_DJPEG /* to get the command-line config symbols */ +#include "jinclude.h" /* get auto-config symbols, <stdio.h> */ #ifdef HAVE_LOCALE_H -#include <locale.h> /* Bill Allombert: use locale for isprint */ +#include <locale.h> /* Bill Allombert: use locale for isprint */ #endif -#include <ctype.h> /* to declare isupper(), tolower() */ +#include <ctype.h> /* to declare isupper(), tolower() */ #ifdef USE_SETMODE -#include <fcntl.h> /* to declare setmode()'s parameter macros */ +#include <fcntl.h> /* to declare setmode()'s parameter macros */ /* If you have setmode() but not <io.h>, just delete this line: */ -#include <io.h> /* to declare setmode() */ +#include <io.h> /* to declare setmode() */ #endif -#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ +#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ #ifdef __MWERKS__ #include <SIOUX.h> /* Metrowerks needs this */ -#include <console.h> /* ... and this */ +#include <console.h> /* ... and this */ #endif #ifdef THINK_C -#include <console.h> /* Think declares it here */ +#include <console.h> /* Think declares it here */ #endif #endif -#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ -#define READ_BINARY "r" +#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ +#define READ_BINARY "r" #else -#ifdef VMS /* VMS is very nonstandard */ -#define READ_BINARY "rb", "ctx=stm" -#else /* standard ANSI-compliant case */ -#define READ_BINARY "rb" +#ifdef VMS /* VMS is very nonstandard */ +#define READ_BINARY "rb", "ctx=stm" +#else /* standard ANSI-compliant case */ +#define READ_BINARY "rb" #endif #endif -#ifndef EXIT_FAILURE /* define exit() codes if not provided */ +#ifndef EXIT_FAILURE /* define exit() codes if not provided */ #define EXIT_FAILURE 1 #endif #ifndef EXIT_SUCCESS #ifdef VMS -#define EXIT_SUCCESS 1 /* VMS is very nonstandard */ +#define EXIT_SUCCESS 1 /* VMS is very nonstandard */ #else #define EXIT_SUCCESS 0 #endif @@ -62,7 +62,7 @@ * To reuse this code in another application, you might need to change these. */ -static FILE * infile; /* input JPEG file */ +static FILE * infile; /* input JPEG file */ /* Return next input byte, or EOF if no more */ #define NEXTBYTE() getc(infile) @@ -107,11 +107,11 @@ read_2_bytes (void) * in this program. (See jdmarker.c for a more complete list.) */ -#define M_SOF0 0xC0 /* Start Of Frame N */ -#define M_SOF1 0xC1 /* N indicates which compression process */ -#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */ +#define M_SOF0 0xC0 /* Start Of Frame N */ +#define M_SOF1 0xC1 /* N indicates which compression process */ +#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */ #define M_SOF3 0xC3 -#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ +#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ #define M_SOF6 0xC6 #define M_SOF7 0xC7 #define M_SOF9 0xC9 @@ -120,12 +120,12 @@ read_2_bytes (void) #define M_SOF13 0xCD #define M_SOF14 0xCE #define M_SOF15 0xCF -#define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */ -#define M_EOI 0xD9 /* End Of Image (end of datastream) */ -#define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ -#define M_APP0 0xE0 /* Application-specific marker, type N */ -#define M_APP12 0xEC /* (we don't bother to list all 16 APPn's) */ -#define M_COM 0xFE /* COMment */ +#define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */ +#define M_EOI 0xD9 /* End Of Image (end of datastream) */ +#define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ +#define M_APP0 0xE0 /* Application-specific marker, type N */ +#define M_APP12 0xEC /* (we don't bother to list all 16 APPn's) */ +#define M_COM 0xFE /* COMment */ /* @@ -253,7 +253,7 @@ process_COM (int raw) printf("\n"); } else if (ch == '\n') { if (lastch != '\r') - printf("\n"); + printf("\n"); } else if (ch == '\\') { printf("\\\\"); } else if (isprint(ch)) { @@ -287,7 +287,7 @@ process_SOFn (int marker) const char * process; int ci; - length = read_2_bytes(); /* usual parameter length count */ + length = read_2_bytes(); /* usual parameter length count */ data_precision = read_1_byte(); image_height = read_2_bytes(); @@ -295,33 +295,33 @@ process_SOFn (int marker) num_components = read_1_byte(); switch (marker) { - case M_SOF0: process = "Baseline"; break; - case M_SOF1: process = "Extended sequential"; break; - case M_SOF2: process = "Progressive"; break; - case M_SOF3: process = "Lossless"; break; - case M_SOF5: process = "Differential sequential"; break; - case M_SOF6: process = "Differential progressive"; break; - case M_SOF7: process = "Differential lossless"; break; - case M_SOF9: process = "Extended sequential, arithmetic coding"; break; - case M_SOF10: process = "Progressive, arithmetic coding"; break; - case M_SOF11: process = "Lossless, arithmetic coding"; break; - case M_SOF13: process = "Differential sequential, arithmetic coding"; break; - case M_SOF14: process = "Differential progressive, arithmetic coding"; break; - case M_SOF15: process = "Differential lossless, arithmetic coding"; break; - default: process = "Unknown"; break; + case M_SOF0: process = "Baseline"; break; + case M_SOF1: process = "Extended sequential"; break; + case M_SOF2: process = "Progressive"; break; + case M_SOF3: process = "Lossless"; break; + case M_SOF5: process = "Differential sequential"; break; + case M_SOF6: process = "Differential progressive"; break; + case M_SOF7: process = "Differential lossless"; break; + case M_SOF9: process = "Extended sequential, arithmetic coding"; break; + case M_SOF10: process = "Progressive, arithmetic coding"; break; + case M_SOF11: process = "Lossless, arithmetic coding"; break; + case M_SOF13: process = "Differential sequential, arithmetic coding"; break; + case M_SOF14: process = "Differential progressive, arithmetic coding"; break; + case M_SOF15: process = "Differential lossless, arithmetic coding"; break; + default: process = "Unknown"; break; } printf("JPEG image is %uw * %uh, %d color components, %d bits per sample\n", - image_width, image_height, num_components, data_precision); + image_width, image_height, num_components, data_precision); printf("JPEG process: %s\n", process); if (length != (unsigned int) (8 + num_components * 3)) ERREXIT("Bogus SOF marker length"); for (ci = 0; ci < num_components; ci++) { - (void) read_1_byte(); /* Component ID code */ - (void) read_1_byte(); /* H, V sampling factors */ - (void) read_1_byte(); /* Quantization table number */ + (void) read_1_byte(); /* Component ID code */ + (void) read_1_byte(); /* H, V sampling factors */ + (void) read_1_byte(); /* Quantization table number */ } } @@ -352,29 +352,29 @@ scan_JPEG_header (int verbose, int raw) /* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be, * treated as SOFn. C4 in particular is actually DHT. */ - case M_SOF0: /* Baseline */ - case M_SOF1: /* Extended sequential, Huffman */ - case M_SOF2: /* Progressive, Huffman */ - case M_SOF3: /* Lossless, Huffman */ - case M_SOF5: /* Differential sequential, Huffman */ - case M_SOF6: /* Differential progressive, Huffman */ - case M_SOF7: /* Differential lossless, Huffman */ - case M_SOF9: /* Extended sequential, arithmetic */ - case M_SOF10: /* Progressive, arithmetic */ - case M_SOF11: /* Lossless, arithmetic */ - case M_SOF13: /* Differential sequential, arithmetic */ - case M_SOF14: /* Differential progressive, arithmetic */ - case M_SOF15: /* Differential lossless, arithmetic */ + case M_SOF0: /* Baseline */ + case M_SOF1: /* Extended sequential, Huffman */ + case M_SOF2: /* Progressive, Huffman */ + case M_SOF3: /* Lossless, Huffman */ + case M_SOF5: /* Differential sequential, Huffman */ + case M_SOF6: /* Differential progressive, Huffman */ + case M_SOF7: /* Differential lossless, Huffman */ + case M_SOF9: /* Extended sequential, arithmetic */ + case M_SOF10: /* Progressive, arithmetic */ + case M_SOF11: /* Lossless, arithmetic */ + case M_SOF13: /* Differential sequential, arithmetic */ + case M_SOF14: /* Differential progressive, arithmetic */ + case M_SOF15: /* Differential lossless, arithmetic */ if (verbose) - process_SOFn(marker); + process_SOFn(marker); else - skip_variable(); + skip_variable(); break; - case M_SOS: /* stop before hitting compressed data */ + case M_SOS: /* stop before hitting compressed data */ return marker; - case M_EOI: /* in case it's a tables-only JPEG stream */ + case M_EOI: /* in case it's a tables-only JPEG stream */ return marker; case M_COM: @@ -386,14 +386,14 @@ scan_JPEG_header (int verbose, int raw) * APP12 markers, so we print those out too when in -verbose mode. */ if (verbose) { - printf("APP12 contains:\n"); - process_COM(raw); + printf("APP12 contains:\n"); + process_COM(raw); } else - skip_variable(); + skip_variable(); break; - default: /* Anything else just gets skipped */ - skip_variable(); /* we assume it has a parameter count... */ + default: /* Anything else just gets skipped */ + skip_variable(); /* we assume it has a parameter count... */ break; } } /* end loop */ @@ -402,7 +402,7 @@ scan_JPEG_header (int verbose, int raw) /* Command line parsing code */ -static const char * progname; /* program name for error messages */ +static const char * progname; /* program name for error messages */ static void @@ -432,17 +432,17 @@ keymatch (char * arg, const char * keyword, int minchars) while ((ca = *arg++) != '\0') { if ((ck = *keyword++) == '\0') - return 0; /* arg longer than keyword, no good */ - if (isupper(ca)) /* force arg to lcase (assume ck is already) */ + return 0; /* arg longer than keyword, no good */ + if (isupper(ca)) /* force arg to lcase (assume ck is already) */ ca = tolower(ca); if (ca != ck) - return 0; /* no good */ - nmatched++; /* count matched characters */ + return 0; /* no good */ + nmatched++; /* count matched characters */ } /* reached end of argument; fail if it's too short for unique abbrev */ if (nmatched < minchars) return 0; - return 1; /* A-OK */ + return 1; /* A-OK */ } @@ -464,14 +464,14 @@ main (int argc, char **argv) progname = argv[0]; if (progname == NULL || progname[0] == 0) - progname = "rdjpgcom"; /* in case C library doesn't provide it */ + progname = "rdjpgcom"; /* in case C library doesn't provide it */ /* Parse switches, if any */ for (argn = 1; argn < argc; argn++) { arg = argv[argn]; if (arg[0] != '-') - break; /* not switch, must be file name */ - arg++; /* advance over '-' */ + break; /* not switch, must be file name */ + arg++; /* advance over '-' */ if (keymatch(arg, "verbose", 1)) { verbose++; } else if (keymatch(arg, "raw", 1)) { @@ -493,10 +493,10 @@ main (int argc, char **argv) } } else { /* default input file is stdin */ -#ifdef USE_SETMODE /* need to hack file mode? */ +#ifdef USE_SETMODE /* need to hack file mode? */ setmode(fileno(stdin), O_BINARY); #endif -#ifdef USE_FDOPEN /* need to re-open in binary mode? */ +#ifdef USE_FDOPEN /* need to re-open in binary mode? */ if ((infile = fdopen(fileno(stdin), READ_BINARY)) == NULL) { fprintf(stderr, "%s: can't open stdin\n", progname); exit(EXIT_FAILURE); @@ -511,5 +511,5 @@ main (int argc, char **argv) /* All done. */ exit(EXIT_SUCCESS); - return 0; /* suppress no-return-value warnings */ + return 0; /* suppress no-return-value warnings */ } |