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