Re: [PHP4BETA] cvs: php4 /ext/exif/ .cvsignore Makefile.in config.m4 exif.c php_exif.h

>     the JPEG header code is is already in getimagesize and
>     iptcembed...

But there is a huge difference between IPTC and EXIF.  IPTC is basically
just file info annotations supported by Photoshop and probably some other
image manipulation programs.  EXIF is the digital camera annotation format
which consists of hundreds of special tags used by various camera
manufacturers to store information about the picture.

I realize there is some overlap, but it seems easier to separate iptc and
exif instead of trying to do everything at once.

Here is what I get back for a file that came out of my digital camera:

Exif header 20176 bytes long
Exif section in Intel order
Directory with 8 entries
    Make = "Eastman Kodak Company"
    Model = "KODAK DC265 ZOOM DIGITAL CAMERA (V01.00)"
    Orientation = 1
    XResolution = 150/1
    YResolution = 150/1
    ResolutionUnit = 2
    YCbCrPositioning = 1
    ExifOffset = 190
Directory with 19 entries
    ExposureTime = 1/250
    FNumber = 951/100
    ExifVersion = "0200"
    DateTimeOriginal = "1999:02:07 09:01:41"
    ComponentsConfiguration = ""
    CompressedBitsPerPixel = 24/10
    ShutterSpeedValue = 800/100
    ApertureValue = 650/100
    ExposureBiasValue = 0/100
    MaxApertureValue = 300/100
    SubjectDistance = 588/100
    MeteringMode = 2
    LightSource = 0
    FocalLength = 240000/10000
    MakerNote = "Eastman Kodak CompanyKODAK DC265 ZOOM DIGITAL CAMERA'q7JPEGAYNL,4&"
    FlashPixVersion = "0100"
    ColorSpace = 1
    ExifImageWidth = 1536
    ExifImageLength = 1024
Thunbnail size of Exif header: 18628
JPEG image is 1536w * 1024h, 3 color components, 8 bits per sample
JPEG process: Baseline
File name    : p0001620.jpg
File size    : 449634 bytes
File date    : 1999:02:07 08:01:40
Camera make  : Eastman Kodak Company
Camera model : KODAK DC265 ZOOM DIGITAL CAMERA (V01.00)
Date/Time    : 1999:02:07 09:01:41
Resolution   : 1536 x 1024
Flash used   : No
Focal length : 24.0mm
Exposure time: 0.004 s  (1/250)
Aperture     : f/ 9.5
Focus Dist.  : 5.88m