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#ifndef EXIF_H_INCLUDED
#define EXIF_H_INCLUDED
#include <stdio.h>
#include "netpbm/pm_c_util.h"
#define MAX_COMMENT 2000
#if MSVCRT
#define PATH_MAX _MAX_PATH
#endif
typedef struct {
/*--------------------------------------------------------------------------
A structure of this type contains the information from an EXIF header
Image File Directory (IFD).
It appears that some of these members are possible only for certain kinds of
IFD (e.g. ThumbnailSize does not appear in a legal IFD for a main image),
but we recognize all tags in all IFDs all the same.
--------------------------------------------------------------------------*/
char cameraMake [32];
char cameraModel [40];
char dateTime [20];
float xResolution;
float yResolution;
int orientation;
int isColor;
int flashUsed;
float focalLength;
float exposureTime;
float apertureFNumber;
float distance;
float exposureBias;
int whiteBalance;
int meteringMode;
int exposureProgram;
int isoEquivalent;
int compressionLevel;
char comments[MAX_COMMENT];
unsigned int thumbnailOffset;
unsigned int thumbnailLength;
unsigned int imageLength;
unsigned int imageWidth;
double focalPlaneXRes;
double focalPlaneUnits;
const unsigned char * thumbnail; /* Pointer at the thumbnail */
unsigned thumbnailSize; /* Size of thumbnail. */
} exif_ifd;
typedef struct {
/*--------------------------------------------------------------------------
A structure of this type contains the information from an EXIF header.
--------------------------------------------------------------------------*/
exif_ifd mainImage; /* aka IFD0 */
exif_ifd thumbnailImage; /* aka IFD1 */
bool haveCCDWidth;
float ccdWidth;
} exif_ImageInfo;
/* Prototypes for exif.c functions. */
void
exif_parse(const unsigned char * const exifSection,
unsigned int const length,
exif_ImageInfo * const imageInfoP,
bool const wantTagTrace,
const char ** const errorP);
void
exif_showImageInfo(const exif_ImageInfo * const imageInfoP);
#endif
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