1 //-------------------------------------------------------------------------- 2 // Include file for jhead program. 3 // 4 // This include file only defines stuff that goes across modules. 5 // I like to keep the definitions for macros and structures as close to 6 // where they get used as possible, so include files only get stuff that 7 // gets used in more than one file. 8 //-------------------------------------------------------------------------- 9 #define _CRT_SECURE_NO_DEPRECATE 1 10 11 #include <stdio.h> 12 #include <stdlib.h> 13 #include <string.h> 14 #include <time.h> 15 #include <errno.h> 16 #include <ctype.h> 17 #include <stdint.h> 18 19 //-------------------------------------------------------------------------- 20 21 #ifdef _WIN32 22 #include <sys/utime.h> 23 #else 24 #include <utime.h> 25 #include <sys/types.h> 26 #include <unistd.h> 27 #include <errno.h> 28 #include <limits.h> 29 #endif 30 31 32 typedef unsigned char uchar; 33 34 #ifndef TRUE 35 #define TRUE 1 36 #define FALSE 0 37 #endif 38 39 #define MAX_COMMENT_SIZE 2000 40 #define GPS_PROCESSING_METHOD_LEN 100 41 42 #ifdef _WIN32 43 #define PATH_MAX _MAX_PATH 44 #define SLASH '\\' 45 #else 46 #define SLASH '/' 47 #endif 48 49 50 //-------------------------------------------------------------------------- 51 // This structure is used to store jpeg file sections in memory. 52 typedef struct { 53 uchar * Data; 54 int Type; 55 unsigned Size; 56 }Section_t; 57 58 extern int ExifSectionIndex; 59 60 extern int DumpExifMap; 61 62 #define MAX_DATE_COPIES 10 63 64 // Buffer size must large enough to hold maximum location string 65 // containing six signed integers plus delimeters and terminator, 66 // i.e.: 11 * 6 + 3(‘/’) + 2(’,’) + 1(\0) = 72 67 #define MAX_BUF_SIZE 72 68 69 typedef struct { 70 uint32_t num; 71 uint32_t denom; 72 } rat_t; 73 74 //-------------------------------------------------------------------------- 75 // This structure stores Exif header image elements in a simple manner 76 // Used to store camera data as extracted from the various ways that it can be 77 // stored in an exif header 78 typedef struct { 79 char FileName [PATH_MAX+1]; 80 time_t FileDateTime; 81 unsigned FileSize; 82 char CameraMake [32]; 83 char CameraModel [40]; 84 char DateTime [20]; 85 int Height, Width; 86 int Orientation; 87 int IsColor; 88 int Process; 89 int FlashUsed; 90 rat_t FocalLength; 91 float ExposureTime; 92 float ApertureFNumber; 93 float Distance; 94 float CCDWidth; 95 float ExposureBias; 96 float DigitalZoomRatio; 97 int FocalLength35mmEquiv; // Exif 2.2 tag - usually not present. 98 int Whitebalance; 99 int MeteringMode; 100 int ExposureProgram; 101 int ExposureMode; 102 int ISOequivalent; 103 int LightSource; 104 int DistanceRange; 105 106 char Comments[MAX_COMMENT_SIZE]; 107 int CommentWidchars; // If nonzer, widechar comment, indicates number of chars. 108 109 unsigned ThumbnailOffset; // Exif offset to thumbnail 110 unsigned ThumbnailSize; // Size of thumbnail. 111 unsigned LargestExifOffset; // Last exif data referenced (to check if thumbnail is at end) 112 113 char ThumbnailAtEnd; // Exif header ends with the thumbnail 114 // (we can only modify the thumbnail if its at the end) 115 int ThumbnailSizeOffset; 116 117 int DateTimeOffsets[MAX_DATE_COPIES]; 118 int numDateTimeTags; 119 120 int GpsInfoPresent; 121 char GpsLat[31]; 122 char GpsLatRaw[MAX_BUF_SIZE]; 123 char GpsLatRef[2]; 124 char GpsLong[31]; 125 char GpsLongRaw[MAX_BUF_SIZE]; 126 char GpsLongRef[2]; 127 char GpsAlt[20]; 128 rat_t GpsAltRaw; 129 char GpsAltRef; 130 // gps-datestamp is 11 bytes ascii in EXIF 2.2 131 char GpsDateStamp[11]; 132 char GpsTimeStamp[11]; 133 char GpsProcessingMethod[GPS_PROCESSING_METHOD_LEN + 1]; 134 }ImageInfo_t; 135 136 137 138 #define EXIT_FAILURE 1 139 #define EXIT_SUCCESS 0 140 141 // jpgfile.c functions 142 typedef enum { 143 READ_METADATA = 1, 144 READ_IMAGE = 2, 145 READ_ALL = 3 146 }ReadMode_t; 147 148 149 typedef struct { 150 unsigned short Tag; // tag value, i.e. TAG_MODEL 151 int Format; // format of data 152 char* Value; // value of data in string format 153 int DataLength; // length of string when format says Value is a string 154 int GpsTag; // bool - the tag is related to GPS info 155 } ExifElement_t; 156 157 158 typedef struct { 159 unsigned short Tag; 160 char * Desc; 161 int Format; 162 int DataLength; // Number of elements in Format. -1 means any length. 163 } TagTable_t; 164 165 166 // prototypes for jhead.c functions 167 void ErrFatal(char * msg); 168 void ErrNonfatal(char * msg, int a1, int a2); 169 void FileTimeAsString(char * TimeStr); 170 171 // Prototypes for exif.c functions. 172 int Exif2tm(struct tm * timeptr, char * ExifTime); 173 void process_EXIF (unsigned char * CharBuf, unsigned int length); 174 int RemoveThumbnail(unsigned char * ExifSection); 175 void ShowImageInfo(int ShowFileInfo); 176 void ShowConciseImageInfo(void); 177 const char * ClearOrientation(void); 178 void PrintFormatNumber(void * ValuePtr, int Format, int ByteCount); 179 double ConvertAnyFormat(void * ValuePtr, int Format); 180 int Get16u(void * Short); 181 unsigned Get32u(void * Long); 182 int Get32s(void * Long); 183 void Put32u(void * Value, unsigned PutValue); 184 void create_EXIF(ExifElement_t* elements, int exifTagCount, int gpsTagCount, int hasDateTimeTag); 185 int TagNameToValue(const char* tagName); 186 int IsDateTimeTag(unsigned short tag); 187 188 //-------------------------------------------------------------------------- 189 // Exif format descriptor stuff 190 extern const int BytesPerFormat[]; 191 #define NUM_FORMATS 12 192 193 #define FMT_BYTE 1 194 #define FMT_STRING 2 195 #define FMT_USHORT 3 196 #define FMT_ULONG 4 197 #define FMT_URATIONAL 5 198 #define FMT_SBYTE 6 199 #define FMT_UNDEFINED 7 200 #define FMT_SSHORT 8 201 #define FMT_SLONG 9 202 #define FMT_SRATIONAL 10 203 #define FMT_SINGLE 11 204 #define FMT_DOUBLE 12 205 206 207 // makernote.c prototypes 208 extern void ProcessMakerNote(unsigned char * DirStart, int ByteCount, 209 unsigned char * OffsetBase, unsigned ExifLength); 210 211 // gpsinfo.c prototypes 212 void ProcessGpsInfo(unsigned char * ValuePtr, int ByteCount, 213 unsigned char * OffsetBase, unsigned ExifLength); 214 int IsGpsTag(const char* tag); 215 int GpsTagToFormatType(unsigned short tag); 216 int GpsTagNameToValue(const char* tagName); 217 TagTable_t* GpsTagToTagTableEntry(unsigned short tag); 218 static const char ExifAsciiPrefix[] = { 0x41, 0x53, 0x43, 0x49, 0x49, 0x0, 0x0, 0x0 }; 219 220 // iptc.c prototpyes 221 void show_IPTC (unsigned char * CharBuf, unsigned int length); 222 void ShowXmp(Section_t XmpSection); 223 224 // Prototypes for myglob.c module 225 #ifdef _WIN32 226 void MyGlob(const char * Pattern , void (*FileFuncParm)(const char * FileName)); 227 void SlashToNative(char * Path); 228 #endif 229 230 // Prototypes for paths.c module 231 int EnsurePathExists(const char * FileName); 232 void CatPath(char * BasePath, const char * FilePath); 233 234 // Prototypes from jpgfile.c 235 int ReadJpegSections (FILE * infile, ReadMode_t ReadMode); 236 void DiscardData(void); 237 void DiscardAllButExif(void); 238 int ReadJpegFile(const char * FileName, ReadMode_t ReadMode); 239 int ReplaceThumbnail(const char * ThumbFileName); 240 int ReplaceThumbnailFromBuffer(const char* Thumb, int ThumbLen); 241 int SaveThumbnail(char * ThumbFileName); 242 int RemoveSectionType(int SectionType); 243 int RemoveUnknownSections(void); 244 int WriteJpegFile(const char * FileName); 245 Section_t * FindSection(int SectionType); 246 Section_t * CreateSection(int SectionType, unsigned char * Data, int size); 247 void ResetJpgfile(void); 248 int ReadJpegSectionsFromBuffer (unsigned char* buffer, unsigned int buffer_size, ReadMode_t ReadMode); 249 int WriteJpegToBuffer(unsigned char* buffer, unsigned int buffer_size); 250 251 // Variables from jhead.c used by exif.c 252 extern ImageInfo_t ImageInfo; 253 extern int ShowTags; 254 extern char* formatStr(int format); 255 256 //-------------------------------------------------------------------------- 257 // JPEG markers consist of one or more 0xFF bytes, followed by a marker 258 // code byte (which is not an FF). Here are the marker codes of interest 259 // in this program. (See jdmarker.c for a more complete list.) 260 //-------------------------------------------------------------------------- 261 262 #define M_SOF0 0xC0 // Start Of Frame N 263 #define M_SOF1 0xC1 // N indicates which compression process 264 #define M_SOF2 0xC2 // Only SOF0-SOF2 are now in common use 265 #define M_SOF3 0xC3 266 #define M_SOF5 0xC5 // NB: codes C4 and CC are NOT SOF markers 267 #define M_SOF6 0xC6 268 #define M_SOF7 0xC7 269 #define M_SOF9 0xC9 270 #define M_SOF10 0xCA 271 #define M_SOF11 0xCB 272 #define M_SOF13 0xCD 273 #define M_SOF14 0xCE 274 #define M_SOF15 0xCF 275 #define M_SOI 0xD8 // Start Of Image (beginning of datastream) 276 #define M_EOI 0xD9 // End Of Image (end of datastream) 277 #define M_SOS 0xDA // Start Of Scan (begins compressed data) 278 #define M_JFIF 0xE0 // Jfif marker 279 #define M_EXIF 0xE1 // Exif marker. Also used for XMP data! 280 #define M_XMP 0x10E1 // Not a real tag (same value in file as Exif!) 281 #define M_COM 0xFE // COMment 282 #define M_DQT 0xDB 283 #define M_DHT 0xC4 284 #define M_DRI 0xDD 285 #define M_IPTC 0xED // IPTC marker 286