Skip to content

Decode embedded EXIF meta data from image files written in Pure Golang

License

Notifications You must be signed in to change notification settings

BrianBland/goexif2

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Repository files navigation

goexif2

License Godoc ReportCard Build

Provides decoding of basic exif and tiff encoded data. This project is a fork of rwcarlsen/goexif with many PR and patches integrated. Suggestions and pull requests are welcome.

Installation

To install the exif extraction cli tool, in a terminal type:

go install github.com/BrianBland/goexif2/cmd/goexif2
goexif2 <file>.jpg

Functionality is split into two packages - "exif" and "tiff" The exif package depends on the tiff package.

go get github.com/BrianBland/goexif2/exif
go get github.com/BrianBland/goexif2/tiff

Example

package main

import (
	"fmt"
	"log"
	"os"

	"github.com/BrianBland/goexif2/exif"
	"github.com/BrianBland/goexif2/mknote"
)

func ExampleDecode() {
	fname := "sample1.jpg"

	f, err := os.Open(fname)
	if err != nil {
		log.Fatal(err)
	}

	// Optionally register camera makenote data parsing - currently Nikon and
	// Canon are supported.
	exif.RegisterParsers(mknote.All...)

	x, err := exif.Decode(f)
	if err != nil {
		log.Fatal(err)
	}

	camModel, _ := x.Get(exif.Model) // normally, don't ignore errors!
	fmt.Println(camModel.StringVal())

	focal, _ := x.Get(exif.FocalLength)
	numer, denom, _ := focal.Rat2(0) // retrieve first (only) rat. value
	fmt.Printf("%v/%v", numer, denom)

	// Two convenience functions exist for date/time taken and GPS coords:
	tm, _ := x.DateTime()
	fmt.Println("Taken: ", tm)

	lat, long, _ := x.LatLong()
	fmt.Println("lat, long: ", lat, ", ", long)
}

License

2-Clause BSD

About

Decode embedded EXIF meta data from image files written in Pure Golang

Resources

License

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages

  • Go 100.0%