mirror of https://github.com/perkeep/perkeep.git
60 lines
1.1 KiB
Markdown
60 lines
1.1 KiB
Markdown
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goexif
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======
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Provides decoding of basic exif and tiff encoded data. Still in alpha - no guarantees.
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Suggestions and pull requests are welcome. Functionality is split into two packages - "exif" and "tiff"
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The exif package depends on the tiff package.
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Documentation can be found at http://go.pkgdoc.org/github.com/camlistore/goexif
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To install, in a terminal type:
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```
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go get github.com/camlistore/goexif/exif
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```
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Or if you just want the tiff package:
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```
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go get github.com/camlistore/goexif/tiff
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```
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Example usage:
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```go
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package main
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import (
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"os"
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"log"
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"fmt"
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"github.com/camlistore/goexif/exif"
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)
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func main() {
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fname := "sample1.jpg"
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f, err := os.Open(fname)
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if err != nil {
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log.Fatal(err)
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}
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x, err := exif.Decode(f)
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f.Close()
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if err != nil {
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log.Fatal(err)
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}
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camModel, _ := x.Get("Model")
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date, _ := x.Get("DateTimeOriginal")
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fmt.Println(camModel.StringVal())
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fmt.Println(date.StringVal())
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focal, _ := x.Get("FocalLength")
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numer, denom := focal.Rat2(0) // retrieve first (only) rat. value
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fmt.Printf("%v/%v", numer, denom)
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}
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```
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<!--golang-->
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