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