EXIF format analysis and through XML processing
Raptor [Mental Studio] (Personal Column) (Blog)
Http://eental.mentsu.com
Below is a typical Exif JPEG file format analysis result (source file as a photo taken with Nikon Coolpixel 775 camera, the EXIF version used is 2.2 and the 2.2 version is not big):
JPEG SOI: FF D8 // Pictures Start JPEG App1: FF E1 App1 Size: 1C 45 // Note: Fronts The three Words are BIG Endian's exif flag: 'exif', 0, 0 Tiff header: byte Order: 'II' Flag: 2a 00 iFD0 Offset: 08 00 00 00 Entries Count: 0B 00 // 11 IFD Entry: Tag: 0e 01 // Image Description Image Description Type: 02 00 00 VALUE: 0B 00 00 00 VALUE: 92 00 00 // from Tiff Header IFD Entry: TAG: 0F 01 // Make Manufacturing Type: 02 00 Size: 06 00 00 Value: B2 00 00 iD Entry: Tag: 10 01 // MODEL Model Type: 02 00 size: 05 00 00 00 Value: CA 00 00 00 ... IFD Entry: Tag: 69 87 // EXIF IFD TYPE: 04 00 // Long Size: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 @@ e END OF IFD0 IFD1 Offset: 18 03 00 00 ... // Store IFD Value Data EXIF IFD: Entries Co Unt: 18 00 IFD Entry: TAG: 9A 82 // Exposition Time ... End of exif iFd next ifd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00- Value Data IFD1: // EXIF is used to store thumbnails entries entuections count: 06 00 IFD Entry: Tag: 03 01 ... End of IFD1 Next IFD: 00 00 00 00 // EXIF only used two TIFF IFDs .. . // end of Tiff header // other JPEG MARKER Segments JPEG EOI: FF D9 // Picture end
