README
¶
nifuda
nifuda provides a native Go library to read tags from EXIF image files.
Getting Started
As a example, a very simplistic EXIF reader:
package main
import (
"fmt"
"log"
"os"
"reflect"
"github.com/vinymeuh/nifuda"
)
func main() {
if len(os.Args) != 2 {
log.Fatalf("Usage: %s EXIF_FILE", os.Args[0])
}
f, err := os.Open(os.Args[1])
if err != nil {
log.Fatal(err)
}
defer f.Close()
x, err := nifuda.Read(f)
if err != nil {
log.Fatal(err)
}
v := reflect.ValueOf(x.Image)
vt := v.Type()
for i := 0; i < vt.NumField(); i++ {
fmt.Printf("Image.%-30s %v\n", vt.Field(i).Name, v.Field(i).Interface())
}
v = reflect.ValueOf(x.Photo)
vt = v.Type()
for i := 0; i < vt.NumField(); i++ {
fmt.Printf("Photo.%-30s %v\n", vt.Field(i).Name, v.Field(i).Interface())
}
}
More examples are availables in nf-tools repository.
References
Exif
TIFF
Documentation
¶
Overview ¶
Package nifuda implements reading of EXIF tags as defined in EXIF 2.31 specification.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type GpsTags ¶
type GpsTags struct {
GPSVersionID string
GPSLatitudeRef string
GPSLatitude string
GPSLongitudeRef string
GPSLongitude string
GPSAltitudeRef string
GPSAltitude float32
GPSTimeStamp string
GPSSatellites string
GPSStatus string
GPSDOP float32
GPSMeasureMode string
GPSSpeedRef string
GPSSpeed float32
GPSTrackRef string
GPSTrack float32
GPSImgDirectionRef string
GPSImgDirection float32
GPSMapDatum string
GPSDestLatitudeRef string
GPSDestLatitude string
GPSDestLongitudeRef string
GPSDestLongitude string
GPSDestBearingRef string
GPSDestBearing float32
GPSDestDistanceRef string
GPSDestDistance float32
GPSDateStamp string
GPSDifferential uint16
GPSHPositioningError float32
}
GpsTags contains tags from GPS SubIFD. Fields are defined in order they appeared in chapter 4.6.6 of Exif 2.31
type ImageTags ¶
type ImageTags struct {
// A. Tags relating to image data structure
ExifIFD uint32
GpsIFD uint32
InteroperabilityIFD uint32
//ImageWidth SHORT or LONG :(
//ImageLength SHORT or LONG :(
BitsPerSample uint16
Compression string
PhotometricInterpretation string
SamplesPerPixel uint16
PlanarConfiguration string
YCbCrPositioning string
ResolutionUnit string
// B. Tags relating to recording offset
// C. Tags relating to image data characteristics
// D. Other tags
DateTime string
ImageDescription string
Make string
Model string
Software string
Artist string
Copyright string
}
ImageTags contains tags from first IFD (IFD0). Fields are defined in order they appeared in chapter 4.6.4 of Exif 2.31
type PhotoTags ¶
type PhotoTags struct {
// A. Tags Relating to Version
ExifVersion string
FlashpixVersion string
// B. Tag Relating to Image Data Characteristics
// C. Tags Relating to Image Configuration
// D. Tags Relating to User Information
// E. Tag Relating to Related File Information
// F. Tags Relating to Date and Time
DateTimeOriginal string
DateTimeDigitized string
OffsetTime string
OffsetTimeOriginal string
OffsetTimeDigitized string
SubSecTime string
SubSecTimeOriginal string
SubSecTimeDigitized string
// G. Tags Relating to Picture-Taking Conditions
ExposureProgram string
SpectralSensitivity string
MeteringMode string
}
PhotoTags contains tags from Exif SubIFD. Fields are defined in order they appeared in chapter 4.6.5 of Exif 2.31
Source Files
¶
Directories
¶
| Path | Synopsis |
|---|---|
|
internal
|
|
|
cmd/testjpeg
Create jpeg files mainly for error test cases Run with: go run testjpeg.go
|
Create jpeg files mainly for error test cases Run with: go run testjpeg.go |
|
cmd/testtiff
Create tiff files mainly for error test cases Run with: go run testtiff.go
|
Create tiff files mainly for error test cases Run with: go run testtiff.go |
Click to show internal directories.
Click to hide internal directories.