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#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _DLL
#ifdef WIN32
#define EXIF_EXPORT __declspec(dllexport)
#else
#define EXIF_EXPORT
#endif
#else
#define EXIF_EXPORT
#endif
//--------------------------------------------------------------------------
// JPEG markers consist of one or more 0xFF bytes, followed by a marker
// code byte (which is not an FF). Here are the marker codes of interest
// in this application.
//--------------------------------------------------------------------------
#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_SOF6 0xC6
#define M_SOF7 0xC7
#define M_SOF9 0xC9
#define M_SOF10 0xCA
#define M_SOF11 0xCB
#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_JFIF 0xE0 // Jfif marker
#define M_EXIF 0xE1 // Exif marker
#define M_COM 0xFE // COMment
#define M_DQT 0xDB
#define M_DHT 0xC4
#define M_DRI 0xDD
#define M_IPTC 0xED // IPTC marker
#define MAX_IPTC_STRING 256
typedef struct {
char RecordVersion[MAX_IPTC_STRING];
char SupplementalCategories[MAX_IPTC_STRING];
char Keywords[MAX_IPTC_STRING];
char Caption[MAX_IPTC_STRING];
char Author[MAX_IPTC_STRING];
char Headline[MAX_IPTC_STRING];
char SpecialInstructions[MAX_IPTC_STRING];
char Category[MAX_IPTC_STRING];
char Byline[MAX_IPTC_STRING];
char BylineTitle[MAX_IPTC_STRING];
char Credit[MAX_IPTC_STRING];
char Source[MAX_IPTC_STRING];
char CopyrightNotice[MAX_IPTC_STRING];
char ObjectName[MAX_IPTC_STRING];
char City[MAX_IPTC_STRING];
char State[MAX_IPTC_STRING];
char Country[MAX_IPTC_STRING];
char TransmissionReference[MAX_IPTC_STRING];
char Date[MAX_IPTC_STRING];
char Urgency[MAX_IPTC_STRING];
char ReferenceService[MAX_IPTC_STRING];
char CountryCode[MAX_IPTC_STRING];
char TimeCreated[MAX_IPTC_STRING];
char SubLocation[MAX_IPTC_STRING];
char ImageType[MAX_IPTC_STRING];
} IPTCInfo_t;
#define EXIF_COMMENT_CHARSET_CONVERTED -1 // Comments contains converted data
#define EXIF_COMMENT_CHARSET_UNKNOWN 0 // Exif: Unknown
#define EXIF_COMMENT_CHARSET_ASCII 2 // Exif: Ascii
#define EXIF_COMMENT_CHARSET_UNICODE 3 // Exif: Unicode (UTF-16)
#define EXIF_COMMENT_CHARSET_JIS 4 // Exif: JIS X208-1990
#define MAX_COMMENT 2000
#define MAX_DATE_COPIES 10
typedef struct {
char CameraMake [33];
char CameraModel [41];
char DateTime [21];
int Height, Width;
int Orientation;
int IsColor;
int Process;
int FlashUsed;
float FocalLength;
float ExposureTime;
float ApertureFNumber;
float Distance;
float CCDWidth;
float ExposureBias;
float DigitalZoomRatio;
int FocalLength35mmEquiv; // Exif 2.2 tag - usually not present.
int Whitebalance;
int MeteringMode;
int ExposureProgram;
int ExposureMode;
int ISOequivalent;
int LightSource;
int CommentsCharset; // EXIF_COMMENT_CHARSET_*
int XPCommentsCharset;
char Comments[MAX_COMMENT + 1]; // +1 for null termination
char FileComment[MAX_COMMENT + 1];
char XPComment[MAX_COMMENT + 1];
char Description[MAX_COMMENT + 1];
unsigned ThumbnailOffset; // Exif offset to thumbnail
unsigned ThumbnailSize; // Size of thumbnail.
unsigned LargestExifOffset; // Last exif data referenced (to check if thumbnail is at end)
char ThumbnailAtEnd; // Exif header ends with the thumbnail
// (we can only modify the thumbnail if its at the end)
int ThumbnailSizeOffset;
int DateTimeOffsets[MAX_DATE_COPIES];
int numDateTimeTags;
int GpsInfoPresent;
char GpsLat[31];
char GpsLong[31];
char GpsAlt[20];
} ExifInfo_t;
EXIF_EXPORT bool process_jpeg(const char *filename, ExifInfo_t *exifInfo, IPTCInfo_t *iptcInfo);
#ifdef __cplusplus
}
#endif
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