xbmc
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 
IPTCInfo_t
Definition: libexif.h:49
ExifInfo_t
Definition: libexif.h:86
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