xbmc/pictures/libexif.h

   1 #pragma once
   2
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7 #ifdef _DLL
   8 #ifdef WIN32
   9 #define EXIF_EXPORT __declspec(dllexport)
  10 #else
  11 #define EXIF_EXPORT
  12 #endif
  13 #else
  14 #define EXIF_EXPORT
  15 #endif
  16
  17 //--------------------------------------------------------------------------
  18 // JPEG markers consist of one or more 0xFF bytes, followed by a marker
  19 // code byte (which is not an FF).  Here are the marker codes of interest
  20 // in this application.
  21 //--------------------------------------------------------------------------
  22
  23 #define M_SOF0  0xC0            // Start Of Frame N
  24 #define M_SOF1  0xC1            // N indicates which compression process
  25 #define M_SOF2  0xC2            // Only SOF0-SOF2 are now in common use
  26 #define M_SOF3  0xC3
  27 #define M_SOF5  0xC5            // NB: codes C4 and CC are NOT SOF markers
  28 #define M_SOF6  0xC6
  29 #define M_SOF7  0xC7
  30 #define M_SOF9  0xC9
  31 #define M_SOF10 0xCA
  32 #define M_SOF11 0xCB
  33 #define M_SOF13 0xCD
  34 #define M_SOF14 0xCE
  35 #define M_SOF15 0xCF
  36 #define M_SOI   0xD8            // Start Of Image (beginning of datastream)
  37 #define M_EOI   0xD9            // End Of Image (end of datastream)
  38 #define M_SOS   0xDA            // Start Of Scan (begins compressed data)
  39 #define M_JFIF  0xE0            // Jfif marker
  40 #define M_EXIF  0xE1            // Exif marker
  41 #define M_COM   0xFE            // COMment
  42 #define M_DQT   0xDB
  43 #define M_DHT   0xC4
  44 #define M_DRI   0xDD
  45 #define M_IPTC  0xED            // IPTC marker
  46
  47 #define MAX_IPTC_STRING 256
  48
  49 typedef struct {
  50   char RecordVersion[MAX_IPTC_STRING];
  51   char SupplementalCategories[MAX_IPTC_STRING];
  52   char Keywords[MAX_IPTC_STRING];
  53   char Caption[MAX_IPTC_STRING];
  54   char Author[MAX_IPTC_STRING];
  55   char Headline[MAX_IPTC_STRING];
  56   char SpecialInstructions[MAX_IPTC_STRING];
  57   char Category[MAX_IPTC_STRING];
  58   char Byline[MAX_IPTC_STRING];
  59   char BylineTitle[MAX_IPTC_STRING];
  60   char Credit[MAX_IPTC_STRING];
  61   char Source[MAX_IPTC_STRING];
  62   char CopyrightNotice[MAX_IPTC_STRING];
  63   char ObjectName[MAX_IPTC_STRING];
  64   char City[MAX_IPTC_STRING];
  65   char State[MAX_IPTC_STRING];
  66   char Country[MAX_IPTC_STRING];
  67   char TransmissionReference[MAX_IPTC_STRING];
  68   char Date[MAX_IPTC_STRING];
  69   char Urgency[MAX_IPTC_STRING];
  70   char ReferenceService[MAX_IPTC_STRING];
  71   char CountryCode[MAX_IPTC_STRING];
  72   char TimeCreated[MAX_IPTC_STRING];
  73   char SubLocation[MAX_IPTC_STRING];
  74   char ImageType[MAX_IPTC_STRING];
  75 } IPTCInfo_t;
  76
  77 #define EXIF_COMMENT_CHARSET_CONVERTED -1 // Comments contains converted data
  78 #define EXIF_COMMENT_CHARSET_UNKNOWN    0 // Exif: Unknown
  79 #define EXIF_COMMENT_CHARSET_ASCII      2 // Exif: Ascii
  80 #define EXIF_COMMENT_CHARSET_UNICODE    3 // Exif: Unicode (UTF-16)
  81 #define EXIF_COMMENT_CHARSET_JIS        4 // Exif: JIS X208-1990
  82
  83 #define MAX_COMMENT 2000
  84 #define MAX_DATE_COPIES 10
  85
  86 typedef struct {
  87     char  CameraMake   [33];
  88     char  CameraModel  [41];
  89     char  DateTime     [21];
  90     int   Height, Width;
  91     int   Orientation;
  92     int   IsColor;
  93     int   Process;
  94     int   FlashUsed;
  95     float FocalLength;
  96     float ExposureTime;
  97     float ApertureFNumber;
  98     float Distance;
  99     float CCDWidth;
 100     float ExposureBias;
 101     float DigitalZoomRatio;
 102     int   FocalLength35mmEquiv; // Exif 2.2 tag - usually not present.
 103     int   Whitebalance;
 104     int   MeteringMode;
 105     int   ExposureProgram;
 106     int   ExposureMode;
 107     int   ISOequivalent;
 108     int   LightSource;
 109     int   CommentsCharset;             // EXIF_COMMENT_CHARSET_*
 110     int   XPCommentsCharset;
 111     char  Comments[MAX_COMMENT + 1];   // +1 for null termination
 112     char  FileComment[MAX_COMMENT + 1];
 113     char  XPComment[MAX_COMMENT + 1];
 114     char  Description[MAX_COMMENT + 1];
 115
 116     unsigned ThumbnailOffset;          // Exif offset to thumbnail
 117     unsigned ThumbnailSize;            // Size of thumbnail.
 118     unsigned LargestExifOffset;        // Last exif data referenced (to check if thumbnail is at end)
 119
 120     char  ThumbnailAtEnd;              // Exif header ends with the thumbnail
 121                                        // (we can only modify the thumbnail if its at the end)
 122     int   ThumbnailSizeOffset;
 123
 124     int  DateTimeOffsets[MAX_DATE_COPIES];
 125     int  numDateTimeTags;
 126
 127     int GpsInfoPresent;
 128     char GpsLat[31];
 129     char GpsLong[31];
 130     char GpsAlt[20];
 131 } ExifInfo_t;
 132
 133 EXIF_EXPORT bool process_jpeg(const char *filename, ExifInfo_t *exifInfo, IPTCInfo_t *iptcInfo);
 134
 135 #ifdef __cplusplus
 136 }
 137 #endif
 138